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Comparing Coro/Coro/State.xs (file contents):
Revision 1.282 by root, Sun Nov 16 10:33:08 2008 UTC vs.
Revision 1.478 by root, Mon Mar 16 11:12:52 2020 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
7
8#if CORO_UCONTEXT
9 #define CORO_BACKEND "ucontext"
10#elif CORO_SJLJ
11 #define CORO_BACKEND "sjlj"
12#elif CORO_LINUX
13 #define CORO_BACKEND "linux"
14#elif CORO_LOSER
15 #define CORO_BACKEND "loser"
16#elif CORO_FIBER
17 #define CORO_BACKEND "fiber"
18#elif CORO_IRIX
19 #define CORO_BACKEND "irix"
20#elif CORO_ASM
21 #define CORO_BACKEND "asm"
22#elif CORO_PTHREAD
23 #define CORO_BACKEND "pthread"
24#else
25 #define CORO_BACKEND "unknown"
26#endif
2 27
3#define PERL_NO_GET_CONTEXT 28#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 29#define PERL_EXT
5 30
6#include "EXTERN.h" 31#include "EXTERN.h"
7#include "perl.h" 32#include "perl.h"
8#include "XSUB.h" 33#include "XSUB.h"
9#include "perliol.h" 34#include "perliol.h"
10 35
11#include "patchlevel.h" 36#include "schmorp.h"
12 37
38#define ECB_NO_THREADS 1
39#define ECB_NO_LIBM 1
40#include "ecb.h"
41
42#include <stddef.h>
13#include <stdio.h> 43#include <stdio.h>
14#include <errno.h> 44#include <errno.h>
15#include <assert.h> 45#include <assert.h>
16 46
17#ifdef WIN32 47#ifndef SvREFCNT_dec_NN
48 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
49#endif
50
51#ifndef SvREFCNT_inc_NN
52 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
53#endif
54
55#ifndef SVs_PADSTALE
56# define SVs_PADSTALE 0
57#endif
58
59#ifdef PadARRAY
60# define NEWPADAPI 1
61# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
62#else
63typedef AV PADNAMELIST;
64# if !PERL_VERSION_ATLEAST(5,8,0)
65typedef AV PADLIST;
66typedef AV PAD;
67# endif
68# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
69# define PadlistMAX(pl) AvFILLp (pl)
70# define PadlistNAMES(pl) (*PadlistARRAY (pl))
71# define PadARRAY AvARRAY
72# define PadMAX AvFILLp
73# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
74#endif
75#ifndef PadnamelistREFCNT
76# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
77#endif
78#ifndef PadnamelistREFCNT_dec
79# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
80#endif
81
82/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
83/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
84#if PERL_VERSION_ATLEAST(5,19,0)
85# define SVt_BIND SVt_IV
86#endif
87
88#if defined(_WIN32)
89# undef HAS_GETTIMEOFDAY
18# undef setjmp 90# undef setjmp
19# undef longjmp 91# undef longjmp
20# undef _exit 92# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 93# define setjmp _setjmp /* deep magic */
22#else 94#else
23# include <inttypes.h> /* most portable stdint.h */ 95# include <inttypes.h> /* most portable stdint.h */
24#endif 96#endif
25 97
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 98/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 99static int cctx_max_idle = 4;
55 100
56#define PERL_VERSION_ATLEAST(a,b,c) \ 101#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 102# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 103#endif
113 104
114/* prefer perl internal functions over our own? */ 105/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 106#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 107# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 108#endif
118 109
119/* The next macros try to return the current stack pointer, in an as 110/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 111 * portable way as possible. */
121#if __GNUC__ >= 4 112#if __GNUC__ >= 4
113# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 114# define STACKLEVEL __builtin_frame_address (0)
123#else 115#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 116# define dSTACKLEVEL volatile void *stacklevel
117# define STACKLEVEL ((void *)&stacklevel)
125#endif 118#endif
126 119
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 120#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 121
144#include "CoroAPI.h" 122#include "CoroAPI.h"
123#define GCoroAPI (&coroapi) /* very sneaky */
145 124
146#ifdef USE_ITHREADS 125#ifdef USE_ITHREADS
147# if CORO_PTHREAD 126# if CORO_PTHREAD
148static void *coro_thx; 127static void *coro_thx;
149# endif 128# endif
150#endif 129#endif
151 130
152/* helper storage struct for Coro::AIO */ 131#ifdef __linux
153struct io_state 132# include <time.h> /* for timespec */
154{ 133# include <syscall.h> /* for SYS_* */
155 AV *res; 134# ifdef SYS_clock_gettime
156 int errorno; 135# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 136# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 137# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 138# endif
160}; 139#endif
140
141/* one off bugfix for perl 5.22 */
142#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
143# undef PadlistNAMES
144# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
145#endif
146
147#if PERL_VERSION_ATLEAST(5,24,0)
148# define SUB_ARGARRAY PL_curpad[0]
149#else
150# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
151#endif
152
153/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
154#if 0
155# undef NDEBUG
156# include <assert.h>
157#endif
161 158
162static double (*nvtime)(); /* so why doesn't it take void? */ 159static double (*nvtime)(); /* so why doesn't it take void? */
160static void (*u2time)(pTHX_ UV ret[2]);
161
162/* we hijack an hopefully unused CV flag for our purposes */
163#define CVf_SLF 0x4000
164static OP *pp_slf (pTHX);
165static void slf_destroy (pTHX_ struct coro *coro);
163 166
164static U32 cctx_gen; 167static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 171static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171static volatile struct coro *transfer_next; 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177static SV *sv_idle; /* $Coro::idle */
172 178
173static GV *irsgv; /* $/ */ 179static GV *irsgv; /* $/ */
174static GV *stdoutgv; /* *STDOUT */ 180static GV *stdoutgv; /* *STDOUT */
175static SV *rv_diehook; 181static SV *rv_diehook;
176static SV *rv_warnhook; 182static SV *rv_warnhook;
177static HV *hv_sig; /* %SIG */
178 183
179/* async_pool helper stuff */ 184/* async_pool helper stuff */
180static SV *sv_pool_rss; 185static SV *sv_pool_rss;
181static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
183 191
184/* Coro::AnyEvent */ 192/* Coro::AnyEvent */
185static SV *sv_activity; 193static SV *sv_activity;
186 194
195/* enable processtime/realtime profiling */
196static char enable_times;
197typedef U32 coro_ts[2];
198static coro_ts time_real, time_cpu;
199static char times_valid;
200
187static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
188static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
189 203
190enum { 204enum
205{
191 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
192 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
193 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
194 CC_TRACE_SUB = 0x08, /* trace sub calls */ 209 CC_TRACE_SUB = 0x08, /* trace sub calls */
195 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
200typedef struct coro_cctx 215typedef struct coro_cctx
201{ 216{
202 struct coro_cctx *next; 217 struct coro_cctx *next;
203 218
204 /* the stack */ 219 /* the stack */
205 void *sptr; 220 struct coro_stack stack;
206 size_t ssize;
207 221
208 /* cpu state */ 222 /* cpu state */
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 223 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
224#ifndef NDEBUG
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env */
226#endif
211 JMPENV *top_env; 227 JMPENV *top_env;
212 coro_context cctx; 228 coro_context cctx;
213 229
214 U32 gen; 230 U32 gen;
215#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
216 int valgrind_id; 232 int valgrind_id;
217#endif 233#endif
218 unsigned char flags; 234 unsigned char flags;
219} coro_cctx; 235} coro_cctx;
220 236
237static coro_cctx *cctx_current; /* the currently running cctx */
238
239/*****************************************************************************/
240
241static MGVTBL coro_state_vtbl;
242
221enum { 243enum
244{
222 CF_RUNNING = 0x0001, /* coroutine is running */ 245 CF_RUNNING = 0x0001, /* coroutine is running */
223 CF_READY = 0x0002, /* coroutine is ready */ 246 CF_READY = 0x0002, /* coroutine is ready */
224 CF_NEW = 0x0004, /* has never been switched to */ 247 CF_NEW = 0x0004, /* has never been switched to */
225 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 248 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
249 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
250 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
226}; 251};
227 252
228/* the structure where most of the perl state is stored, overlaid on the cxstack */ 253/* the structure where most of the perl state is stored, overlaid on the cxstack */
229typedef struct 254typedef struct
230{ 255{
231 SV *defsv;
232 AV *defav;
233 SV *errsv;
234 SV *irsgv;
235#define VAR(name,type) type name; 256 #define VARx(name,expr,type) type name;
236# include "state.h" 257 #include "state.h"
237#undef VAR
238} perl_slots; 258} perl_slots;
239 259
260/* how many context stack entries do we need for perl_slots */
240#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 261#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
241 262
242/* this is a structure representing a perl-level coroutine */ 263/* this is a structure representing a perl-level coroutine */
243struct coro { 264struct coro
265{
244 /* the C coroutine allocated to this perl coroutine, if any */ 266 /* the C coroutine allocated to this perl coroutine, if any */
245 coro_cctx *cctx; 267 coro_cctx *cctx;
246 268
247 /* process data */ 269 /* ready queue */
270 struct coro *next_ready;
271
272 /* state data */
248 struct CoroSLF slf_frame; /* saved slf frame */ 273 struct CoroSLF slf_frame; /* saved slf frame */
249 AV *mainstack; 274 AV *mainstack;
250 perl_slots *slot; /* basically the saved sp */ 275 perl_slots *slot; /* basically the saved sp */
251 276
277 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 278 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 279 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 280 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 281
258 /* statistics */ 282 /* statistics */
259 int usecount; /* number of transfers to this coro */ 283 int usecount; /* number of transfers to this coro */
260 284
261 /* coro process data */ 285 /* coro process data */
262 int prio; 286 int prio;
263 SV *throw; /* exception to be thrown */ 287 SV *except; /* exception to be thrown */
288 SV *rouse_cb; /* most recently created rouse callback */
289 AV *on_destroy; /* callbacks or coros to notify on destroy */
290 AV *status; /* the exit status list */
264 291
265 /* async_pool */ 292 /* async_pool */
266 SV *saved_deffh; 293 SV *saved_deffh;
294 SV *invoke_cb;
295 AV *invoke_av;
296
297 /* on_enter/on_leave */
298 AV *on_enter; AV *on_enter_xs;
299 AV *on_leave; AV *on_leave_xs;
300
301 /* swap_sv */
302 AV *swap_sv;
303
304 /* times */
305 coro_ts t_cpu, t_real;
267 306
268 /* linked list */ 307 /* linked list */
269 struct coro *next, *prev; 308 struct coro *next, *prev;
270}; 309};
271 310
272typedef struct coro *Coro__State; 311typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 312typedef struct coro *Coro__State_or_hashref;
274 313
314/* the following variables are effectively part of the perl context */
315/* and get copied between struct coro and these variables */
316/* the main reason we don't support windows process emulation */
275static struct CoroSLF slf_frame; /* the current slf frame */ 317static struct CoroSLF slf_frame; /* the current slf frame */
276 318
277/** Coro ********************************************************************/ 319/** Coro ********************************************************************/
278 320
279#define PRIO_MAX 3 321#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 322#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 323#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 324#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 325#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 326#define CORO_PRIO_MIN -4
285 327
286/* for Coro.pm */ 328/* for Coro.pm */
287static SV *coro_current; 329static SV *coro_current;
288static SV *coro_readyhook; 330static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 331static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
332static CV *cv_coro_run;
290static struct coro *coro_first; 333static struct coro *coro_first;
291#define coro_nready coroapi.nready 334#define coro_nready coroapi.nready
292 335
336/** JIT *********************************************************************/
337
338#if CORO_JIT
339 /* APPLE doesn't have mmap though */
340 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
341 #ifndef CORO_JIT_TYPE
342 #if ECB_AMD64 && CORO_JIT_UNIXY
343 #define CORO_JIT_TYPE "amd64-unix"
344 #elif __i386 && CORO_JIT_UNIXY
345 #define CORO_JIT_TYPE "x86-unix"
346 #endif
347 #endif
348#endif
349
350#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
351 #undef CORO_JIT
352#endif
353
354#if CORO_JIT
355 typedef void (*load_save_perl_slots_type)(perl_slots *);
356 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
357#endif
358
359/** Coro::Select ************************************************************/
360
361static OP *(*coro_old_pp_sselect) (pTHX);
362static SV *coro_select_select;
363
364/* horrible hack, but if it works... */
365static OP *
366coro_pp_sselect (pTHX)
367{
368 dSP;
369 PUSHMARK (SP - 4); /* fake argument list */
370 XPUSHs (coro_select_select);
371 PUTBACK;
372
373 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
374 PL_op->op_flags |= OPf_STACKED;
375 PL_op->op_private = 0;
376 return PL_ppaddr [OP_ENTERSUB](aTHX);
377}
378
379/** time stuff **************************************************************/
380
381#ifdef HAS_GETTIMEOFDAY
382
383ecb_inline void
384coro_u2time (pTHX_ UV ret[2])
385{
386 struct timeval tv;
387 gettimeofday (&tv, 0);
388
389 ret [0] = tv.tv_sec;
390 ret [1] = tv.tv_usec;
391}
392
393ecb_inline double
394coro_nvtime (void)
395{
396 struct timeval tv;
397 gettimeofday (&tv, 0);
398
399 return tv.tv_sec + tv.tv_usec * 1e-6;
400}
401
402ecb_inline void
403time_init (pTHX)
404{
405 nvtime = coro_nvtime;
406 u2time = coro_u2time;
407}
408
409#else
410
411ecb_inline void
412time_init (pTHX)
413{
414 SV **svp;
415
416 require_pv ("Time/HiRes.pm");
417
418 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
419
420 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
421 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
422
423 nvtime = INT2PTR (double (*)(), SvIV (*svp));
424
425 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
426 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
427}
428
429#endif
430
293/** lowlevel stuff **********************************************************/ 431/** lowlevel stuff **********************************************************/
294 432
295static SV * 433static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 434coro_get_sv (pTHX_ const char *name, int create)
297{ 435{
298#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 437 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 438 get_sv (name, create);
301#endif 439#endif
302 return get_sv (name, create); 440 return get_sv (name, create);
303} 441}
304 442
305static AV * 443static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 444coro_get_av (pTHX_ const char *name, int create)
307{ 445{
308#if PERL_VERSION_ATLEAST (5,10,0) 446#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 447 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 448 get_av (name, create);
311#endif 449#endif
312 return get_av (name, create); 450 return get_av (name, create);
313} 451}
314 452
315static HV * 453static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 454coro_get_hv (pTHX_ const char *name, int create)
317{ 455{
318#if PERL_VERSION_ATLEAST (5,10,0) 456#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 457 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 458 get_hv (name, create);
321#endif 459#endif
322 return get_hv (name, create); 460 return get_hv (name, create);
323} 461}
324 462
325static AV * 463ecb_inline void
464coro_times_update (void)
465{
466#ifdef coro_clock_gettime
467 struct timespec ts;
468
469 ts.tv_sec = ts.tv_nsec = 0;
470 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
471 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
472
473 ts.tv_sec = ts.tv_nsec = 0;
474 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
475 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
476#else
477 dTHX;
478 UV tv[2];
479
480 u2time (aTHX_ tv);
481 time_real [0] = tv [0];
482 time_real [1] = tv [1] * 1000;
483#endif
484}
485
486ecb_inline void
487coro_times_add (struct coro *c)
488{
489 c->t_real [1] += time_real [1];
490 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
491 c->t_real [0] += time_real [0];
492
493 c->t_cpu [1] += time_cpu [1];
494 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
495 c->t_cpu [0] += time_cpu [0];
496}
497
498ecb_inline void
499coro_times_sub (struct coro *c)
500{
501 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
502 c->t_real [1] -= time_real [1];
503 c->t_real [0] -= time_real [0];
504
505 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
506 c->t_cpu [1] -= time_cpu [1];
507 c->t_cpu [0] -= time_cpu [0];
508}
509
510/*****************************************************************************/
511/* magic glue */
512
513#define CORO_MAGIC_type_cv 26
514#define CORO_MAGIC_type_state PERL_MAGIC_ext
515
516#define CORO_MAGIC_NN(sv, type) \
517 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
518 ? SvMAGIC (sv) \
519 : mg_find (sv, type))
520
521#define CORO_MAGIC(sv, type) \
522 (ecb_expect_true (SvMAGIC (sv)) \
523 ? CORO_MAGIC_NN (sv, type) \
524 : 0)
525
526#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
527#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
528
529ecb_inline MAGIC *
530SvSTATEhv_p (pTHX_ SV *coro)
531{
532 MAGIC *mg;
533
534 if (ecb_expect_true (
535 SvTYPE (coro) == SVt_PVHV
536 && (mg = CORO_MAGIC_state (coro))
537 && mg->mg_virtual == &coro_state_vtbl
538 ))
539 return mg;
540
541 return 0;
542}
543
544ecb_inline struct coro *
545SvSTATE_ (pTHX_ SV *coro_sv)
546{
547 MAGIC *mg;
548
549 if (SvROK (coro_sv))
550 coro_sv = SvRV (coro_sv);
551
552 mg = SvSTATEhv_p (aTHX_ coro_sv);
553 if (!mg)
554 croak ("Coro::State object required");
555
556 return (struct coro *)mg->mg_ptr;
557}
558
559#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
560
561/* faster than SvSTATE, but expects a coroutine hv */
562#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
563#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
564
565/*****************************************************************************/
566/* padlist management and caching */
567
568ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 569coro_derive_padlist (pTHX_ CV *cv)
327{ 570{
328 AV *padlist = CvPADLIST (cv); 571 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 572 PADLIST *newpadlist;
573 PADNAMELIST *padnames;
574 PAD *newpad;
575 PADOFFSET off = PadlistMAX (padlist) + 1;
330 576
331 newpadlist = newAV (); 577#if NEWPADAPI
578
579 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
580 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
581 while (!PadlistARRAY (padlist)[off - 1])
582 --off;
583
584 Perl_pad_push (aTHX_ padlist, off);
585
586 newpad = PadlistARRAY (padlist)[off];
587 PadlistARRAY (padlist)[off] = 0;
588
589#else
590
591#if PERL_VERSION_ATLEAST (5,10,0)
592 Perl_pad_push (aTHX_ padlist, off);
593#else
594 Perl_pad_push (aTHX_ padlist, off, 1);
595#endif
596
597 newpad = PadlistARRAY (padlist)[off];
598 PadlistMAX (padlist) = off - 1;
599
600#endif
601
602 newPADLIST (newpadlist);
603#if !PERL_VERSION_ATLEAST(5,15,3)
604 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 605 AvREAL_off (newpadlist);
333#if PERL_VERSION_ATLEAST (5,10,0)
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
335#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
337#endif 606#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
339 --AvFILLp (padlist);
340 607
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 608 /* Already extended to 2 elements by newPADLIST. */
342 av_store (newpadlist, 1, (SV *)newpad); 609 PadlistMAX (newpadlist) = 1;
610
611 padnames = PadlistNAMES (padlist);
612 ++PadnamelistREFCNT (padnames);
613 PadlistNAMES (newpadlist) = padnames;
614
615 PadlistARRAY (newpadlist)[1] = newpad;
343 616
344 return newpadlist; 617 return newpadlist;
345} 618}
346 619
347static void 620ecb_inline void
348free_padlist (pTHX_ AV *padlist) 621free_padlist (pTHX_ PADLIST *padlist)
349{ 622{
350 /* may be during global destruction */ 623 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 624 if (!IN_DESTRUCT)
352 { 625 {
353 I32 i = AvFILLp (padlist); 626 I32 i = PadlistMAX (padlist);
354 while (i >= 0) 627
628 while (i > 0) /* special-case index 0 */
355 { 629 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 630 /* we try to be extra-careful here */
631 PAD *pad = PadlistARRAY (padlist)[i--];
632
357 if (svp) 633 if (pad)
358 { 634 {
359 SV *sv; 635 I32 j = PadMAX (pad);
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 636
637 while (j >= 0)
361 SvREFCNT_dec (sv); 638 SvREFCNT_dec (PadARRAY (pad)[j--]);
362 639
640 PadMAX (pad) = -1;
363 SvREFCNT_dec (*svp); 641 SvREFCNT_dec (pad);
364 } 642 }
365 } 643 }
366 644
645 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
646
647#if NEWPADAPI
648 Safefree (PadlistARRAY (padlist));
649 Safefree (padlist);
650#else
651 AvFILLp (padlist) = -1;
652 AvREAL_off (padlist);
367 SvREFCNT_dec ((SV*)padlist); 653 SvREFCNT_dec ((SV*)padlist);
654#endif
368 } 655 }
369} 656}
370 657
371static int 658static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 659coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 660{
374 AV *padlist; 661 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 662 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
663 size_t len = *(size_t *)mg->mg_ptr;
376 664
377 /* casting is fun. */ 665 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 666 if (IN_DESTRUCT)
667 return 0;
668
669 while (len--)
379 free_padlist (aTHX_ padlist); 670 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 671
383 return 0; 672 return 0;
384} 673}
385
386#define CORO_MAGIC_type_cv PERL_MAGIC_ext
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 674
389static MGVTBL coro_cv_vtbl = { 675static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 676 0, 0, 0, 0,
391 coro_cv_free 677 coro_cv_free
392}; 678};
393 679
394#define CORO_MAGIC(sv, type) \
395 expect_true (SvMAGIC (sv)) \
396 ? expect_true (SvMAGIC (sv)->mg_type == type) \
397 ? SvMAGIC (sv) \
398 : mg_find (sv, type) \
399 : 0
400
401#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
402#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
403
404INLINE struct coro *
405SvSTATE_ (pTHX_ SV *coro)
406{
407 HV *stash;
408 MAGIC *mg;
409
410 if (SvROK (coro))
411 coro = SvRV (coro);
412
413 if (expect_false (SvTYPE (coro) != SVt_PVHV))
414 croak ("Coro::State object required");
415
416 stash = SvSTASH (coro);
417 if (expect_false (stash != coro_stash && stash != coro_state_stash))
418 {
419 /* very slow, but rare, check */
420 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
421 croak ("Coro::State object required");
422 }
423
424 mg = CORO_MAGIC_state (coro);
425 return (struct coro *)mg->mg_ptr;
426}
427
428#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
429
430/* fastert than SvSTATE, but expects a coroutine hv */
431INLINE struct coro *
432SvSTATE_hv (SV *sv)
433{
434 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
435 ? SvMAGIC (sv)
436 : mg_find (sv, CORO_MAGIC_type_state);
437
438 return (struct coro *)mg->mg_ptr;
439}
440
441#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
442
443/* the next two functions merely cache the padlists */ 680/* the next two functions merely cache the padlists */
444static void 681ecb_inline void
445get_padlist (pTHX_ CV *cv) 682get_padlist (pTHX_ CV *cv)
446{ 683{
447 MAGIC *mg = CORO_MAGIC_cv (cv); 684 MAGIC *mg = CORO_MAGIC_cv (cv);
448 AV *av; 685 size_t *lenp;
449 686
450 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 687 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
451 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 688 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
452 else 689 else
453 { 690 {
454#if CORO_PREFER_PERL_FUNCTIONS 691#if CORO_PREFER_PERL_FUNCTIONS
455 /* this is probably cleaner? but also slower! */ 692 /* this is probably cleaner? but also slower! */
456 /* in practise, it seems to be less stable */ 693 /* in practise, it seems to be less stable */
457 CV *cp = Perl_cv_clone (cv); 694 CV *cp = Perl_cv_clone (aTHX_ cv);
458 CvPADLIST (cv) = CvPADLIST (cp); 695 CvPADLIST (cv) = CvPADLIST (cp);
459 CvPADLIST (cp) = 0; 696 CvPADLIST (cp) = 0;
460 SvREFCNT_dec (cp); 697 SvREFCNT_dec (cp);
461#else 698#else
462 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 699 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
463#endif 700#endif
464 } 701 }
465} 702}
466 703
467static void 704ecb_inline void
468put_padlist (pTHX_ CV *cv) 705put_padlist (pTHX_ CV *cv)
469{ 706{
470 MAGIC *mg = CORO_MAGIC_cv (cv); 707 MAGIC *mg = CORO_MAGIC_cv (cv);
471 AV *av;
472 708
473 if (expect_false (!mg)) 709 if (ecb_expect_false (!mg))
710 {
474 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 711 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
712 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
713 mg->mg_len = 1; /* so mg_free frees mg_ptr */
714 }
715 else
716 Renew (mg->mg_ptr,
717 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
718 char);
475 719
476 av = (AV *)mg->mg_obj; 720 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
477
478 if (expect_false (AvFILLp (av) >= AvMAX (av)))
479 av_extend (av, AvMAX (av) + 1);
480
481 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
482} 721}
483 722
484/** load & save, init *******************************************************/ 723/** load & save, init *******************************************************/
724
725ecb_inline void
726swap_sv (SV *a, SV *b)
727{
728 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
729 SV tmp;
730
731 /* swap sv_any */
732 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
733
734 /* swap sv_flags */
735 SvFLAGS (&tmp) = SvFLAGS (a);
736 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
737 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
738
739#if PERL_VERSION_ATLEAST (5,10,0)
740 /* perl 5.10 and later complicates this _quite_ a bit, but it also
741 * is much faster, so no quarrels here. alternatively, we could
742 * sv_upgrade to avoid this.
743 */
744 {
745 /* swap sv_u */
746 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
747
748 /* if SvANY points to the head, we need to adjust the pointers,
749 * as the pointer for a still points to b, and maybe vice versa.
750 */
751 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
752 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
753 svany_in_head_set |= 1 << SVt_NV;
754 #endif
755
756 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
757
758 if (svany_in_head (SvTYPE (a)))
759 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
760
761 if (svany_in_head (SvTYPE (b)))
762 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
763 }
764#endif
765}
766
767/* swap sv heads, at least logically */
768static void
769swap_svs_enter (pTHX_ Coro__State c)
770{
771 int i;
772
773 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
774 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
775}
776
777static void
778swap_svs_leave (pTHX_ Coro__State c)
779{
780 int i;
781
782 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
783 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
784}
785
786#define SWAP_SVS_ENTER(coro) \
787 if (ecb_expect_false ((coro)->swap_sv)) \
788 swap_svs_enter (aTHX_ (coro))
789
790#define SWAP_SVS_LEAVE(coro) \
791 if (ecb_expect_false ((coro)->swap_sv)) \
792 swap_svs_leave (aTHX_ (coro))
793
794static void
795on_enterleave_call (pTHX_ SV *cb);
485 796
486static void 797static void
487load_perl (pTHX_ Coro__State c) 798load_perl (pTHX_ Coro__State c)
488{ 799{
489 perl_slots *slot = c->slot; 800 perl_slots *slot = c->slot;
490 c->slot = 0; 801 c->slot = 0;
491 802
492 PL_mainstack = c->mainstack; 803 PL_mainstack = c->mainstack;
493 804
494 GvSV (PL_defgv) = slot->defsv; 805#if CORO_JIT
495 GvAV (PL_defgv) = slot->defav; 806 load_perl_slots (slot);
496 GvSV (PL_errgv) = slot->errsv; 807#else
497 GvSV (irsgv) = slot->irsgv;
498
499 #define VAR(name,type) PL_ ## name = slot->name; 808 #define VARx(name,expr,type) expr = slot->name;
500 # include "state.h" 809 #include "state.h"
501 #undef VAR 810#endif
502 811
503 { 812 {
504 dSP; 813 dSP;
505 814
506 CV *cv; 815 CV *cv;
507 816
508 /* now do the ugly restore mess */ 817 /* now do the ugly restore mess */
509 while (expect_true (cv = (CV *)POPs)) 818 while (ecb_expect_true (cv = (CV *)POPs))
510 { 819 {
511 put_padlist (aTHX_ cv); /* mark this padlist as available */ 820 put_padlist (aTHX_ cv); /* mark this padlist as available */
512 CvDEPTH (cv) = PTR2IV (POPs); 821 CvDEPTH (cv) = PTR2IV (POPs);
513 CvPADLIST (cv) = (AV *)POPs; 822 CvPADLIST (cv) = (PADLIST *)POPs;
514 } 823 }
515 824
516 PUTBACK; 825 PUTBACK;
517 } 826 }
518 827
519 slf_frame = c->slf_frame; 828 slf_frame = c->slf_frame;
829 CORO_THROW = c->except;
830
831 if (ecb_expect_false (enable_times))
832 {
833 if (ecb_expect_false (!times_valid))
834 coro_times_update ();
835
836 coro_times_sub (c);
837 }
838
839 if (ecb_expect_false (c->on_enter))
840 {
841 int i;
842
843 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
845 }
846
847 if (ecb_expect_false (c->on_enter_xs))
848 {
849 int i;
850
851 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
852 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
853 }
854
855 SWAP_SVS_ENTER (c);
520} 856}
521 857
522static void 858static void
523save_perl (pTHX_ Coro__State c) 859save_perl (pTHX_ Coro__State c)
524{ 860{
861 SWAP_SVS_LEAVE (c);
862
863 if (ecb_expect_false (c->on_leave_xs))
864 {
865 int i;
866
867 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
868 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
869 }
870
871 if (ecb_expect_false (c->on_leave))
872 {
873 int i;
874
875 for (i = AvFILLp (c->on_leave); i >= 0; --i)
876 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
877 }
878
879 times_valid = 0;
880
881 if (ecb_expect_false (enable_times))
882 {
883 coro_times_update (); times_valid = 1;
884 coro_times_add (c);
885 }
886
887 c->except = CORO_THROW;
525 c->slf_frame = slf_frame; 888 c->slf_frame = slf_frame;
526 889
527 { 890 {
528 dSP; 891 dSP;
529 I32 cxix = cxstack_ix; 892 I32 cxix = cxstack_ix;
… …
537 900
538 XPUSHs (Nullsv); 901 XPUSHs (Nullsv);
539 /* this loop was inspired by pp_caller */ 902 /* this loop was inspired by pp_caller */
540 for (;;) 903 for (;;)
541 { 904 {
542 while (expect_true (cxix >= 0)) 905 while (ecb_expect_true (cxix >= 0))
543 { 906 {
544 PERL_CONTEXT *cx = &ccstk[cxix--]; 907 PERL_CONTEXT *cx = &ccstk[cxix--];
545 908
546 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 909 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
547 { 910 {
548 CV *cv = cx->blk_sub.cv; 911 CV *cv = cx->blk_sub.cv;
549 912
550 if (expect_true (CvDEPTH (cv))) 913 if (ecb_expect_true (CvDEPTH (cv)))
551 { 914 {
552 EXTEND (SP, 3); 915 EXTEND (SP, 3);
553 PUSHs ((SV *)CvPADLIST (cv)); 916 PUSHs ((SV *)CvPADLIST (cv));
554 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 917 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
555 PUSHs ((SV *)cv); 918 PUSHs ((SV *)cv);
… …
558 get_padlist (aTHX_ cv); 921 get_padlist (aTHX_ cv);
559 } 922 }
560 } 923 }
561 } 924 }
562 925
563 if (expect_true (top_si->si_type == PERLSI_MAIN)) 926 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
564 break; 927 break;
565 928
566 top_si = top_si->si_prev; 929 top_si = top_si->si_prev;
567 ccstk = top_si->si_cxstack; 930 ccstk = top_si->si_cxstack;
568 cxix = top_si->si_cxix; 931 cxix = top_si->si_cxix;
… …
570 933
571 PUTBACK; 934 PUTBACK;
572 } 935 }
573 936
574 /* allocate some space on the context stack for our purposes */ 937 /* allocate some space on the context stack for our purposes */
575 /* we manually unroll here, as usually 2 slots is enough */ 938 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
576 if (SLOT_COUNT >= 1) CXINC;
577 if (SLOT_COUNT >= 2) CXINC;
578 if (SLOT_COUNT >= 3) CXINC;
579 { 939 {
580 int i; 940 unsigned int i;
941
581 for (i = 3; i < SLOT_COUNT; ++i) 942 for (i = 0; i < SLOT_COUNT; ++i)
582 CXINC; 943 CXINC;
583 } 944
584 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 945 cxstack_ix -= SLOT_COUNT; /* undo allocation */
946 }
585 947
586 c->mainstack = PL_mainstack; 948 c->mainstack = PL_mainstack;
587 949
588 { 950 {
589 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 951 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
590 952
591 slot->defav = GvAV (PL_defgv); 953#if CORO_JIT
592 slot->defsv = DEFSV; 954 save_perl_slots (slot);
593 slot->errsv = ERRSV; 955#else
594 slot->irsgv = GvSV (irsgv);
595
596 #define VAR(name,type) slot->name = PL_ ## name; 956 #define VARx(name,expr,type) slot->name = expr;
597 # include "state.h" 957 #include "state.h"
598 #undef VAR 958#endif
599 } 959 }
600} 960}
601 961
602/* 962/*
603 * allocate various perl stacks. This is almost an exact copy 963 * allocate various perl stacks. This is almost an exact copy
604 * of perl.c:init_stacks, except that it uses less memory 964 * of perl.c:init_stacks, except that it uses less memory
605 * on the (sometimes correct) assumption that coroutines do 965 * on the (sometimes correct) assumption that coroutines do
606 * not usually need a lot of stackspace. 966 * not usually need a lot of stackspace.
607 */ 967 */
608#if CORO_PREFER_PERL_FUNCTIONS 968#if CORO_PREFER_PERL_FUNCTIONS
609# define coro_init_stacks init_stacks 969# define coro_init_stacks(thx) init_stacks ()
610#else 970#else
611static void 971static void
612coro_init_stacks (pTHX) 972coro_init_stacks (pTHX)
613{ 973{
614 PL_curstackinfo = new_stackinfo(32, 8); 974 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
615 PL_curstackinfo->si_type = PERLSI_MAIN; 975 PL_curstackinfo->si_type = PERLSI_MAIN;
616 PL_curstack = PL_curstackinfo->si_stack; 976 PL_curstack = PL_curstackinfo->si_stack;
617 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 977 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
618 978
619 PL_stack_base = AvARRAY(PL_curstack); 979 PL_stack_base = AvARRAY(PL_curstack);
… …
634#endif 994#endif
635 995
636 New(54,PL_scopestack,8,I32); 996 New(54,PL_scopestack,8,I32);
637 PL_scopestack_ix = 0; 997 PL_scopestack_ix = 0;
638 PL_scopestack_max = 8; 998 PL_scopestack_max = 8;
999#if HAS_SCOPESTACK_NAME
1000 New(54,PL_scopestack_name,8,const char*);
1001#endif
639 1002
640 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
641 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
642 PL_savestack_max = 24; 1005 PL_savestack_max = 24;
1006#if PERL_VERSION_ATLEAST (5,24,0)
1007 /* perl 5.24 moves SS_MAXPUSH optimisation from */
1008 /* the header macros to PL_savestack_max */
1009 PL_savestack_max -= SS_MAXPUSH;
1010#endif
643 1011
644#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
645 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
646 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
647 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
671 } 1039 }
672 1040
673 Safefree (PL_tmps_stack); 1041 Safefree (PL_tmps_stack);
674 Safefree (PL_markstack); 1042 Safefree (PL_markstack);
675 Safefree (PL_scopestack); 1043 Safefree (PL_scopestack);
1044#if HAS_SCOPESTACK_NAME
1045 Safefree (PL_scopestack_name);
1046#endif
676 Safefree (PL_savestack); 1047 Safefree (PL_savestack);
677#if !PERL_VERSION_ATLEAST (5,10,0) 1048#if !PERL_VERSION_ATLEAST (5,10,0)
678 Safefree (PL_retstack); 1049 Safefree (PL_retstack);
679#endif 1050#endif
680} 1051}
681 1052
1053#define CORO_RSS \
1054 rss += sizeof (SYM (curstackinfo)); \
1055 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1056 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1057 rss += SYM (tmps_max) * sizeof (SV *); \
1058 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1059 rss += SYM (scopestack_max) * sizeof (I32); \
1060 rss += SYM (savestack_max) * sizeof (ANY);
1061
682static size_t 1062static size_t
683coro_rss (pTHX_ struct coro *coro) 1063coro_rss (pTHX_ struct coro *coro)
684{ 1064{
685 size_t rss = sizeof (*coro); 1065 size_t rss = sizeof (*coro);
686 1066
687 if (coro->mainstack) 1067 if (coro->mainstack)
688 { 1068 {
689 perl_slots tmp_slot;
690 perl_slots *slot;
691
692 if (coro->flags & CF_RUNNING) 1069 if (coro->flags & CF_RUNNING)
693 { 1070 {
694 slot = &tmp_slot; 1071 #define SYM(sym) PL_ ## sym
695 1072 CORO_RSS;
696 #define VAR(name,type) slot->name = PL_ ## name;
697 # include "state.h"
698 #undef VAR 1073 #undef SYM
699 } 1074 }
700 else 1075 else
701 slot = coro->slot;
702
703 if (slot)
704 { 1076 {
705 rss += sizeof (slot->curstackinfo); 1077 #define SYM(sym) coro->slot->sym
706 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1078 CORO_RSS;
707 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1079 #undef SYM
708 rss += slot->tmps_max * sizeof (SV *);
709 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
710 rss += slot->scopestack_max * sizeof (I32);
711 rss += slot->savestack_max * sizeof (ANY);
712
713#if !PERL_VERSION_ATLEAST (5,10,0)
714 rss += slot->retstack_max * sizeof (OP *);
715#endif
716 } 1080 }
717 } 1081 }
718 1082
719 return rss; 1083 return rss;
720} 1084}
721 1085
722/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
723
724static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
727 1087
728/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
729#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
730#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
731 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
732 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
733#endif 1093#endif
734 1094
1095/* this will be a patched copy of PL_vtbl_sigelem */
1096static MGVTBL coro_sigelem_vtbl;
1097
1098static int ecb_cold
1099coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1100{
1101 char *key = SvPV_nolen ((SV *)name);
1102
1103 /* do what mg_copy normally does */
1104 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1105 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1106
1107 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1108 if (*key == '_'
1109 && (strEQ (key, "__DIE__")
1110 || strEQ (key, "__WARN__")))
1111 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1112
1113 return 1;
1114}
1115
1116/* perl does not have a %SIG vtbl, we provide one so we can override */
1117/* the magic vtbl for the __DIE__ and __WARN__ members */
1118static const MGVTBL coro_sig_vtbl = {
1119 0, 0, 0, 0, 0,
1120 coro_sig_copy
1121};
1122
735/* 1123/*
736 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
737 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1125 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
738 * and instead of tryign to save and restore the hash elements, we just provide 1126 * and instead of trying to save and restore the hash elements (extremely slow),
739 * readback here. 1127 * we just provide our own readback here.
740 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
741 * not expecting this to actually change the hook. This is a potential problem
742 * when a schedule happens then, but we ignore this.
743 */ 1128 */
744static int 1129static int ecb_cold
745coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
746{ 1131{
747 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
748 1135
749 if (*s == '_') 1136 SV *ssv;
750 {
751 SV **svp = 0;
752 1137
753 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
754 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
755
756 if (svp) 1138 if (!*svp)
757 { 1139 ssv = &PL_sv_undef;
758 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
759 return 0; 1141 ssv = sv_2mortal (newRV_inc (*svp));
760 } 1142 else
761 } 1143 ssv = *svp;
762 1144
763 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1145 sv_setsv (sv, ssv);
1146 return 0;
764} 1147}
765 1148
766static int 1149static int ecb_cold
767coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
768{ 1151{
769 const char *s = MgPV_nolen_const (mg); 1152 const char *s = MgPV_nolen_const (mg);
1153 /* the key must be either __DIE__ or __WARN__ here */
1154 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
770 1155
771 if (*s == '_')
772 {
773 SV **svp = 0;
774
775 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
776 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
777
778 if (svp)
779 {
780 SV *old = *svp; 1156 SV *old = *svp;
781 *svp = 0; 1157 *svp = 0;
782 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
783 return 0; 1159 return 0;
784 }
785 }
786
787 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
788} 1160}
789 1161
790static int 1162static int ecb_cold
791coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
792{ 1164{
793 const char *s = MgPV_nolen_const (mg); 1165 const char *s = MgPV_nolen_const (mg);
1166 /* the key must be either __DIE__ or __WARN__ here */
1167 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
794 1168
795 if (*s == '_')
796 {
797 SV **svp = 0;
798
799 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
800 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
801
802 if (svp)
803 {
804 SV *old = *svp; 1169 SV *old = *svp;
805 *svp = newSVsv (sv); 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
806 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
807 return 0; 1172 return 0;
808 }
809 }
810
811 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
812} 1173}
813 1174
814static void 1175static void
815prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
816{ 1177{
… …
822slf_check_nop (pTHX_ struct CoroSLF *frame) 1183slf_check_nop (pTHX_ struct CoroSLF *frame)
823{ 1184{
824 return 0; 1185 return 0;
825} 1186}
826 1187
827static void 1188static int
1189slf_check_repeat (pTHX_ struct CoroSLF *frame)
1190{
1191 return 1;
1192}
1193
1194/** coroutine stack handling ************************************************/
1195
1196static UNOP init_perl_op;
1197
1198ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
829{ 1200{
830 /* 1201 /*
831 * emulate part of the perl startup here. 1202 * emulate part of the perl startup here.
832 */ 1203 */
833 coro_init_stacks (aTHX); 1204 coro_init_stacks (aTHX);
834 1205
835 PL_runops = RUNOPS_DEFAULT; 1206 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1207 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1208 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1209 PL_comppad = 0;
1210 PL_comppad_name = 0;
1211 PL_comppad_name_fill = 0;
1212 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1213 PL_curpm = 0;
840 PL_curpad = 0; 1214 PL_curpad = 0;
841 PL_localizing = 0; 1215 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1216 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1217#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1218 PL_parser = 0;
846#endif 1219#endif
1220 PL_hints = 0;
847 1221
848 /* recreate the die/warn hooks */ 1222 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1223 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1224 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1225
852 GvSV (PL_defgv) = newSV (0); 1226 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1227 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1228 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1229 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1230 GvHV (PL_hintgv) = newHV ();
1231#if PERL_VERSION_ATLEAST (5,10,0)
1232 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1233#endif
856 PL_rs = newSVsv (GvSV (irsgv)); 1234 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1235 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1236
859 { 1237 {
860 dSP; 1238 dSP;
861 UNOP myop; 1239 UNOP myop;
862 1240
863 Zero (&myop, 1, UNOP); 1241 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
1243 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
866 1245
867 PUSHMARK (SP); 1246 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1247 XPUSHs ((SV *)coro->startcv);
869 PUTBACK; 1248 PUTBACK;
870 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1251 }
874 1252
875 /* this newly created coroutine might be run on an existing cctx which most 1253 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1254 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1255 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1256 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1257 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
880} 1258 slf_frame.destroy = 0;
881 1259
1260 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1261 init_perl_op.op_next = PL_op;
1262 init_perl_op.op_type = OP_ENTERSUB;
1263 init_perl_op.op_ppaddr = pp_slf;
1264 /* no flags etc. required, as an init function won't be called */
1265
1266 PL_op = (OP *)&init_perl_op;
1267
1268 /* copy throw, in case it was set before init_perl */
1269 CORO_THROW = coro->except;
1270
1271 SWAP_SVS_ENTER (coro);
1272
1273 if (ecb_expect_false (enable_times))
1274 {
1275 coro_times_update ();
1276 coro_times_sub (coro);
1277 }
1278}
1279
882static void 1280static void
883coro_destruct (pTHX_ struct coro *coro) 1281coro_unwind_stacks (pTHX)
884{ 1282{
885 if (!IN_DESTRUCT) 1283 if (!IN_DESTRUCT)
886 { 1284 {
887 /* restore all saved variables and stuff */ 1285 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 1286 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1294 POPSTACK_TO (PL_mainstack);
897 1295
898 /* unwind main stack */ 1296 /* unwind main stack */
899 dounwind (-1); 1297 dounwind (-1);
900 } 1298 }
1299}
901 1300
902 SvREFCNT_dec (GvSV (PL_defgv)); 1301static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1302destroy_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1303{
905 SvREFCNT_dec (PL_defoutgv); 1304 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1305
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 1306 {
1307 SV *old_current = SvRV (coro_current);
1308 struct coro *current = SvSTATE (old_current);
1309
1310 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1311
1312 save_perl (aTHX_ current);
1313
1314 /* this will cause transfer_check to croak on block*/
1315 SvRV_set (coro_current, (SV *)coro->hv);
1316
1317 load_perl (aTHX_ coro);
1318
1319 /* restore swapped sv's */
1320 SWAP_SVS_LEAVE (coro);
1321
1322 coro_unwind_stacks (aTHX);
1323
1324 coro_destruct_stacks (aTHX);
1325
1326 /* now save some sv's to be free'd later */
1327 svf [0] = GvSV (PL_defgv);
1328 svf [1] = (SV *)GvAV (PL_defgv);
1329 svf [2] = GvSV (PL_errgv);
1330 svf [3] = (SV *)PL_defoutgv;
1331 svf [4] = PL_rs;
1332 svf [5] = GvSV (irsgv);
1333 svf [6] = (SV *)GvHV (PL_hintgv);
1334 svf [7] = PL_diehook;
1335 svf [8] = PL_warnhook;
1336 assert (9 == sizeof (svf) / sizeof (*svf));
1337
1338 SvRV_set (coro_current, old_current);
1339
1340 load_perl (aTHX_ current);
1341 }
1342
1343 {
1344 unsigned int i;
1345
1346 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1347 SvREFCNT_dec (svf [i]);
1348
912 SvREFCNT_dec (coro->saved_deffh); 1349 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1350 SvREFCNT_dec (coro->rouse_cb);
914 1351 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1352 SvREFCNT_dec (coro->invoke_av);
1353 SvREFCNT_dec (coro->on_enter_xs);
1354 SvREFCNT_dec (coro->on_leave_xs);
1355 }
916} 1356}
917 1357
918INLINE void 1358ecb_inline void
919free_coro_mortal (pTHX) 1359free_coro_mortal (pTHX)
920{ 1360{
921 if (expect_true (coro_mortal)) 1361 if (ecb_expect_true (coro_mortal))
922 { 1362 {
923 SvREFCNT_dec (coro_mortal); 1363 SvREFCNT_dec ((SV *)coro_mortal);
924 coro_mortal = 0; 1364 coro_mortal = 0;
925 } 1365 }
926} 1366}
927 1367
928static int 1368static int
929runops_trace (pTHX) 1369runops_trace (pTHX)
930{ 1370{
931 COP *oldcop = 0; 1371 COP *oldcop = 0;
932 int oldcxix = -2; 1372 int oldcxix = -2;
933 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1373
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1374 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1375 {
938 PERL_ASYNC_CHECK (); 1376 PERL_ASYNC_CHECK ();
939 1377
940 if (cctx->flags & CC_TRACE_ALL) 1378 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1379 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1380 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1381 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1382 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1383 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1384 AV *av = newAV (); /* return values */
947 SV **cb; 1385 SV **cb;
… …
962 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
963 1401
964 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
965 ENTER; 1403 ENTER;
966 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
967 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
968 PUSHMARK (SP);
969 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
970 PUSHs (fullname); 1408 PUSHs (fullname);
971 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
972 PUTBACK; 1410 PUTBACK;
973 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1411 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
… …
984 1422
985 if (PL_curcop != &PL_compiling) 1423 if (PL_curcop != &PL_compiling)
986 { 1424 {
987 SV **cb; 1425 SV **cb;
988 1426
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1427 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
990 { 1428 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1429 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1430
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1431 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1432 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1433 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1434 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1435 SV *fullname = sv_2mortal (newSV (0));
999 1436
1000 if (isGV (gv)) 1437 if (isGV (gv))
1001 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
1002 1439
1003 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
1004 ENTER; 1441 ENTER;
1005 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
1006 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
1007 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1446 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1447 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1011 PUTBACK; 1448 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1449 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1450 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1451 SPAGAIN;
1015 FREETMPS; 1452 FREETMPS;
… …
1018 } 1455 }
1019 1456
1020 oldcxix = cxstack_ix; 1457 oldcxix = cxstack_ix;
1021 } 1458 }
1022 1459
1023 if (cctx->flags & CC_TRACE_LINE) 1460 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1461 {
1025 dSP; 1462 dSP;
1026 1463
1027 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1465 ENTER;
1029 SAVETMPS; 1466 SAVETMPS;
1030 EXTEND (SP, 3);
1031 PL_runops = RUNOPS_DEFAULT;
1032 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1033 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1034 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1035 PUTBACK; 1471 PUTBACK;
1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); 1472 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1473 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
… …
1047 1483
1048 TAINT_NOT; 1484 TAINT_NOT;
1049 return 0; 1485 return 0;
1050} 1486}
1051 1487
1488static struct CoroSLF cctx_ssl_frame;
1489
1052static void 1490static void
1053prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1491slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1492{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1493 ta->prev = 0;
1057} 1494}
1058 1495
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1496static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1497slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
1063static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx)
1065{ 1498{
1066 dSP; 1499 *frame = cctx_ssl_frame;
1067 UNOP myop;
1068 1500
1501 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1502}
1503
1504/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1505static void ecb_noinline
1506cctx_prepare (pTHX)
1507{
1069 PL_top_env = &PL_start_env; 1508 PL_top_env = &PL_start_env;
1070 1509
1071 if (cctx->flags & CC_TRACE) 1510 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1511 PL_runops = runops_trace;
1073 1512
1074 Zero (&myop, 1, UNOP); 1513 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1514 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1515 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1516 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1517
1078 PUSHMARK (SP); 1518 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1519 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1520
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1521 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1522 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1523}
1087 1524
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1525/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1526ecb_inline void
1090transfer_tail (pTHX) 1527transfer_tail (pTHX)
1091{ 1528{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1529 free_coro_mortal (aTHX);
1530}
1097 1531
1098 if (expect_false (next->throw)) 1532/* try to exit the same way perl's main function would do */
1099 { 1533/* we do not bother resetting the environment or other things *7
1100 SV *exception = sv_2mortal (next->throw); 1534/* that are not, uhm, essential */
1101 1535/* this obviously also doesn't work when perl is embedded */
1102 next->throw = 0; 1536static void ecb_noinline ecb_cold
1103 sv_setsv (ERRSV, exception); 1537perlish_exit (pTHX)
1104 croak (0); 1538{
1105 } 1539 int exitstatus = perl_destruct (PL_curinterp);
1540 perl_free (PL_curinterp);
1541 exit (exitstatus);
1106} 1542}
1107 1543
1108/* 1544/*
1109 * this is a _very_ stripped down perl interpreter ;) 1545 * this is a _very_ stripped down perl interpreter ;)
1110 */ 1546 */
… …
1122 /* normally we would need to skip the entersub here */ 1558 /* normally we would need to skip the entersub here */
1123 /* not doing so will re-execute it, which is exactly what we want */ 1559 /* not doing so will re-execute it, which is exactly what we want */
1124 /* PL_nop = PL_nop->op_next */ 1560 /* PL_nop = PL_nop->op_next */
1125 1561
1126 /* inject a fake subroutine call to cctx_init */ 1562 /* inject a fake subroutine call to cctx_init */
1127 cctx_prepare (aTHX_ (coro_cctx *)arg); 1563 cctx_prepare (aTHX);
1128 1564
1129 /* cctx_run is the alternative tail of transfer() */ 1565 /* cctx_run is the alternative tail of transfer() */
1130 /* TODO: throwing an exception here might be deadly, VERIFY */
1131 transfer_tail (aTHX); 1566 transfer_tail (aTHX);
1132 1567
1133 /* somebody or something will hit me for both perl_run and PL_restartop */ 1568 /* somebody or something will hit me for both perl_run and PL_restartop */
1134 PL_restartop = PL_op; 1569 PL_restartop = PL_op;
1135 perl_run (PL_curinterp); 1570 perl_run (PL_curinterp);
1571 /*
1572 * Unfortunately, there is no way to get at the return values of the
1573 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1574 * runtime errors here, as this is just a random interpreter, not a thread.
1575 */
1576
1577 /*
1578 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1579 * requires PL_scopestack_ix, so do it here if required.
1580 */
1581 if (!PL_scopestack_ix)
1582 ENTER;
1136 1583
1137 /* 1584 /*
1138 * If perl-run returns we assume exit() was being called or the coro 1585 * If perl-run returns we assume exit() was being called or the coro
1139 * fell off the end, which seems to be the only valid (non-bug) 1586 * fell off the end, which seems to be the only valid (non-bug)
1140 * reason for perl_run to return. We try to exit by jumping to the 1587 * reason for perl_run to return. We try to mimic whatever perl is normally
1141 * bootstrap-time "top" top_env, as we cannot restore the "main" 1588 * doing in that case. YMMV.
1142 * coroutine as Coro has no such concept
1143 */ 1589 */
1144 PL_top_env = main_top_env; 1590 perlish_exit (aTHX);
1145 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1146 } 1591 }
1147} 1592}
1148 1593
1149static coro_cctx * 1594static coro_cctx *
1150cctx_new () 1595cctx_new (void)
1151{ 1596{
1152 coro_cctx *cctx; 1597 coro_cctx *cctx;
1153 1598
1154 ++cctx_count; 1599 ++cctx_count;
1155 New (0, cctx, 1, coro_cctx); 1600 New (0, cctx, 1, coro_cctx);
… …
1161 return cctx; 1606 return cctx;
1162} 1607}
1163 1608
1164/* create a new cctx only suitable as source */ 1609/* create a new cctx only suitable as source */
1165static coro_cctx * 1610static coro_cctx *
1166cctx_new_empty () 1611cctx_new_empty (void)
1167{ 1612{
1168 coro_cctx *cctx = cctx_new (); 1613 coro_cctx *cctx = cctx_new ();
1169 1614
1170 cctx->sptr = 0; 1615 cctx->stack.sptr = 0;
1171 coro_create (&cctx->cctx, 0, 0, 0, 0); 1616 coro_create (&cctx->cctx, 0, 0, 0, 0);
1172 1617
1173 return cctx; 1618 return cctx;
1174} 1619}
1175 1620
1176/* create a new cctx suitable as destination/running a perl interpreter */ 1621/* create a new cctx suitable as destination/running a perl interpreter */
1177static coro_cctx * 1622static coro_cctx *
1178cctx_new_run () 1623cctx_new_run (void)
1179{ 1624{
1180 coro_cctx *cctx = cctx_new (); 1625 coro_cctx *cctx = cctx_new ();
1181 void *stack_start;
1182 size_t stack_size;
1183 1626
1184#if HAVE_MMAP 1627 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1185 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1186 /* mmap supposedly does allocate-on-write for us */
1187 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1188
1189 if (cctx->sptr != (void *)-1)
1190 {
1191 #if CORO_STACKGUARD
1192 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1193 #endif
1194 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1195 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1196 cctx->flags |= CC_MAPPED;
1197 } 1628 {
1198 else
1199#endif
1200 {
1201 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1202 New (0, cctx->sptr, cctx_stacksize, long);
1203
1204 if (!cctx->sptr)
1205 {
1206 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1629 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1207 _exit (EXIT_FAILURE); 1630 _exit (EXIT_FAILURE);
1208 }
1209
1210 stack_start = cctx->sptr;
1211 stack_size = cctx->ssize;
1212 } 1631 }
1213 1632
1214 #if CORO_USE_VALGRIND
1215 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1216 #endif
1217
1218 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1633 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1219 1634
1220 return cctx; 1635 return cctx;
1221} 1636}
1222 1637
1223static void 1638static void
1224cctx_destroy (coro_cctx *cctx) 1639cctx_destroy (coro_cctx *cctx)
1225{ 1640{
1226 if (!cctx) 1641 if (!cctx)
1227 return; 1642 return;
1228 1643
1644 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1645
1229 --cctx_count; 1646 --cctx_count;
1230 coro_destroy (&cctx->cctx); 1647 coro_destroy (&cctx->cctx);
1231 1648
1232 /* coro_transfer creates new, empty cctx's */ 1649 coro_stack_free (&cctx->stack);
1233 if (cctx->sptr)
1234 {
1235 #if CORO_USE_VALGRIND
1236 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1237 #endif
1238
1239#if HAVE_MMAP
1240 if (cctx->flags & CC_MAPPED)
1241 munmap (cctx->sptr, cctx->ssize);
1242 else
1243#endif
1244 Safefree (cctx->sptr);
1245 }
1246 1650
1247 Safefree (cctx); 1651 Safefree (cctx);
1248} 1652}
1249 1653
1250/* wether this cctx should be destructed */ 1654/* wether this cctx should be destructed */
1251#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1655#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1252 1656
1253static coro_cctx * 1657static coro_cctx *
1254cctx_get (pTHX) 1658cctx_get (pTHX)
1255{ 1659{
1256 while (expect_true (cctx_first)) 1660 while (ecb_expect_true (cctx_first))
1257 { 1661 {
1258 coro_cctx *cctx = cctx_first; 1662 coro_cctx *cctx = cctx_first;
1259 cctx_first = cctx->next; 1663 cctx_first = cctx->next;
1260 --cctx_idle; 1664 --cctx_idle;
1261 1665
1262 if (expect_true (!CCTX_EXPIRED (cctx))) 1666 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1263 return cctx; 1667 return cctx;
1264 1668
1265 cctx_destroy (cctx); 1669 cctx_destroy (cctx);
1266 } 1670 }
1267 1671
… …
1269} 1673}
1270 1674
1271static void 1675static void
1272cctx_put (coro_cctx *cctx) 1676cctx_put (coro_cctx *cctx)
1273{ 1677{
1274 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1678 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1275 1679
1276 /* free another cctx if overlimit */ 1680 /* free another cctx if overlimit */
1277 if (expect_false (cctx_idle >= cctx_max_idle)) 1681 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1278 { 1682 {
1279 coro_cctx *first = cctx_first; 1683 coro_cctx *first = cctx_first;
1280 cctx_first = first->next; 1684 cctx_first = first->next;
1281 --cctx_idle; 1685 --cctx_idle;
1282 1686
… …
1291/** coroutine switching *****************************************************/ 1695/** coroutine switching *****************************************************/
1292 1696
1293static void 1697static void
1294transfer_check (pTHX_ struct coro *prev, struct coro *next) 1698transfer_check (pTHX_ struct coro *prev, struct coro *next)
1295{ 1699{
1700 /* TODO: throwing up here is considered harmful */
1701
1296 if (expect_true (prev != next)) 1702 if (ecb_expect_true (prev != next))
1297 { 1703 {
1298 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1704 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1299 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1705 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1300 1706
1301 if (expect_false (next->flags & CF_RUNNING)) 1707 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1302 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1303
1304 if (expect_false (next->flags & CF_DESTROYED))
1305 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1708 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1306 1709
1307#if !PERL_VERSION_ATLEAST (5,10,0) 1710#if !PERL_VERSION_ATLEAST (5,10,0)
1308 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1711 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1309 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1712 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1310#endif 1713#endif
1311 } 1714 }
1312} 1715}
1313 1716
1314/* always use the TRANSFER macro */ 1717/* always use the TRANSFER macro */
1315static void NOINLINE 1718static void ecb_noinline /* noinline so we have a fixed stackframe */
1316transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1719transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1317{ 1720{
1318 dSTACKLEVEL; 1721 dSTACKLEVEL;
1319 1722
1320 /* sometimes transfer is only called to set idle_sp */ 1723 /* sometimes transfer is only called to set idle_sp */
1321 if (expect_false (!next)) 1724 if (ecb_expect_false (!prev))
1322 { 1725 {
1323 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1726 cctx_current->idle_sp = STACKLEVEL;
1324 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1727 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1325 } 1728 }
1326 else if (expect_true (prev != next)) 1729 else if (ecb_expect_true (prev != next))
1327 { 1730 {
1328 coro_cctx *prev__cctx; 1731 coro_cctx *cctx_prev;
1329 1732
1330 if (expect_false (prev->flags & CF_NEW)) 1733 if (ecb_expect_false (prev->flags & CF_NEW))
1331 { 1734 {
1332 /* create a new empty/source context */ 1735 /* create a new empty/source context */
1333 prev->cctx = cctx_new_empty ();
1334 prev->flags &= ~CF_NEW; 1736 prev->flags &= ~CF_NEW;
1335 prev->flags |= CF_RUNNING; 1737 prev->flags |= CF_RUNNING;
1336 } 1738 }
1337 1739
1338 prev->flags &= ~CF_RUNNING; 1740 prev->flags &= ~CF_RUNNING;
1339 next->flags |= CF_RUNNING; 1741 next->flags |= CF_RUNNING;
1340 1742
1341 /* first get rid of the old state */ 1743 /* first get rid of the old state */
1342 save_perl (aTHX_ prev); 1744 save_perl (aTHX_ prev);
1343 1745
1344 if (expect_false (next->flags & CF_NEW)) 1746 if (ecb_expect_false (next->flags & CF_NEW))
1345 { 1747 {
1346 /* need to start coroutine */ 1748 /* need to start coroutine */
1347 next->flags &= ~CF_NEW; 1749 next->flags &= ~CF_NEW;
1348 /* setup coroutine call */ 1750 /* setup coroutine call */
1349 coro_setup (aTHX_ next); 1751 init_perl (aTHX_ next);
1350 } 1752 }
1351 else 1753 else
1352 load_perl (aTHX_ next); 1754 load_perl (aTHX_ next);
1353 1755
1354 prev__cctx = prev->cctx;
1355
1356 /* possibly untie and reuse the cctx */ 1756 /* possibly untie and reuse the cctx */
1357 if (expect_true ( 1757 if (ecb_expect_true (
1358 prev__cctx->idle_sp == (void *)stacklevel 1758 cctx_current->idle_sp == STACKLEVEL
1359 && !(prev__cctx->flags & CC_TRACE) 1759 && !(cctx_current->flags & CC_TRACE)
1360 && !force_cctx 1760 && !force_cctx
1361 )) 1761 ))
1362 { 1762 {
1363 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1763 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1364 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1764 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1365 1765
1366 prev->cctx = 0;
1367
1368 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1766 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1369 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1767 /* without this the next cctx_get might destroy the running cctx while still in use */
1370 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1768 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1371 if (!next->cctx) 1769 if (ecb_expect_true (!next->cctx))
1372 next->cctx = cctx_get (aTHX); 1770 next->cctx = cctx_get (aTHX);
1373 1771
1374 cctx_put (prev__cctx); 1772 cctx_put (cctx_current);
1375 } 1773 }
1774 else
1775 prev->cctx = cctx_current;
1376 1776
1377 ++next->usecount; 1777 ++next->usecount;
1378 1778
1379 if (expect_true (!next->cctx)) 1779 cctx_prev = cctx_current;
1380 next->cctx = cctx_get (aTHX); 1780 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1381 1781
1382 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1782 next->cctx = 0;
1383 transfer_next = next;
1384 1783
1385 if (expect_false (prev__cctx != next->cctx)) 1784 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1785 {
1387 prev__cctx->top_env = PL_top_env; 1786 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1787 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1788 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1789 }
1391 1790
1392 transfer_tail (aTHX); 1791 transfer_tail (aTHX);
1393 } 1792 }
1394} 1793}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1795#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1796#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1797
1399/** high level stuff ********************************************************/ 1798/** high level stuff ********************************************************/
1400 1799
1800/* this function is actually Coro, not Coro::State, but we call it from here */
1801/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1802static void
1803coro_call_on_destroy (pTHX_ struct coro *coro);
1804
1805static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1806coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1807{
1404 if (coro->flags & CF_DESTROYED) 1808 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1809 return;
1406 1810
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1811 slf_destroy (aTHX_ coro);
1409 1812
1410 coro->flags |= CF_DESTROYED; 1813 coro->flags |= CF_ZOMBIE;
1411 1814
1412 if (coro->flags & CF_READY) 1815 if (coro->flags & CF_READY)
1413 { 1816 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1817 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1818 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1819 --coro_nready;
1417 } 1820 }
1418 else 1821 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1822 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1823
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1824 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1825 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1826 if (coro == coro_first) coro_first = coro->next;
1443 1827
1444 return 1; 1828 if (coro->mainstack
1829 && coro->mainstack != main_mainstack
1830 && coro->slot
1831 && !PL_dirty)
1832 destroy_perl (aTHX_ coro);
1833
1834 cctx_destroy (coro->cctx);
1835 SvREFCNT_dec (coro->startcv);
1836 SvREFCNT_dec (coro->args);
1837 SvREFCNT_dec (coro->swap_sv);
1838 SvREFCNT_dec (CORO_THROW);
1839
1840 coro_call_on_destroy (aTHX_ coro);
1841
1842 /* more destruction mayhem in coro_state_free */
1445} 1843}
1446 1844
1447static int 1845static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1846coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1847{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1848 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1849 mg->mg_ptr = 0;
1452 1850
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1851 coro_state_destroy (aTHX_ coro);
1852 SvREFCNT_dec (coro->on_destroy);
1853 SvREFCNT_dec (coro->status);
1854
1458 Safefree (coro); 1855 Safefree (coro);
1459 }
1460 1856
1461 return 0; 1857 return 0;
1462} 1858}
1463 1859
1464static int 1860static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1861coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1862{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1863 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1864 /* we simply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1865 mg->mg_ptr = 0;
1866 mg->mg_virtual = 0;
1470 1867
1471 return 0; 1868 return 0;
1472} 1869}
1473 1870
1474static MGVTBL coro_state_vtbl = { 1871static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1896 TRANSFER (ta, 1);
1500} 1897}
1501 1898
1502/** Coro ********************************************************************/ 1899/** Coro ********************************************************************/
1503 1900
1504INLINE void 1901ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1902coro_enq (pTHX_ struct coro *coro)
1506{ 1903{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1904 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1905
1510INLINE SV * 1906 SvREFCNT_inc_NN (coro->hv);
1907
1908 coro->next_ready = 0;
1909 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1910 ready [1] = coro;
1911}
1912
1913ecb_inline struct coro *
1511coro_deq (pTHX) 1914coro_deq (pTHX)
1512{ 1915{
1513 int prio; 1916 int prio;
1514 1917
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1918 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1919 {
1517 return av_shift (coro_ready [prio]); 1920 struct coro **ready = coro_ready [prio];
1921
1922 if (ready [0])
1923 {
1924 struct coro *coro = ready [0];
1925 ready [0] = coro->next_ready;
1926 return coro;
1927 }
1928 }
1518 1929
1519 return 0; 1930 return 0;
1931}
1932
1933static void
1934invoke_sv_ready_hook_helper (void)
1935{
1936 dTHX;
1937 dSP;
1938
1939 ENTER;
1940 SAVETMPS;
1941
1942 PUSHMARK (SP);
1943 PUTBACK;
1944 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1945
1946 FREETMPS;
1947 LEAVE;
1520} 1948}
1521 1949
1522static int 1950static int
1523api_ready (pTHX_ SV *coro_sv) 1951api_ready (pTHX_ SV *coro_sv)
1524{ 1952{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1953 struct coro *coro = SvSTATE (coro_sv);
1533 1954
1534 if (coro->flags & CF_READY) 1955 if (coro->flags & CF_READY)
1535 return 0; 1956 return 0;
1536 1957
1537 coro->flags |= CF_READY; 1958 coro->flags |= CF_READY;
1538 1959
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1960 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1961
1545 if (sv_hook) 1962 if (!coro_nready++)
1546 { 1963 if (coroapi.readyhook)
1547 dSP; 1964 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_DISCARD);
1555 SPAGAIN;
1556
1557 FREETMPS;
1558 LEAVE;
1559 }
1560
1561 if (xs_hook)
1562 xs_hook ();
1563 1965
1564 return 1; 1966 return 1;
1565} 1967}
1566 1968
1567static int 1969static int
1568api_is_ready (pTHX_ SV *coro_sv) 1970api_is_ready (pTHX_ SV *coro_sv)
1569{ 1971{
1570 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1972 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1571} 1973}
1572 1974
1573INLINE void 1975/* expects to own a reference to next->hv */
1976ecb_inline void
1574prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1977prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1575{ 1978{
1576 SV *prev_sv, *next_sv;
1577
1578 for (;;)
1579 {
1580 next_sv = coro_deq (aTHX);
1581
1582 /* nothing to schedule: call the idle handler */
1583 if (expect_false (!next_sv))
1584 {
1585 dSP;
1586
1587 ENTER;
1588 SAVETMPS;
1589
1590 PUSHMARK (SP);
1591 PUTBACK;
1592 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1593 SPAGAIN;
1594
1595 FREETMPS;
1596 LEAVE;
1597 continue;
1598 }
1599
1600 ta->next = SvSTATE_hv (next_sv);
1601
1602 /* cannot transfer to destroyed coros, skip and look for next */
1603 if (expect_false (ta->next->flags & CF_DESTROYED))
1604 {
1605 SvREFCNT_dec (next_sv);
1606 /* coro_nready has already been taken care of by destroy */
1607 continue;
1608 }
1609
1610 --coro_nready;
1611 break;
1612 }
1613
1614 /* free this only after the transfer */
1615 prev_sv = SvRV (coro_current); 1979 SV *prev_sv = SvRV (coro_current);
1980
1616 ta->prev = SvSTATE_hv (prev_sv); 1981 ta->prev = SvSTATE_hv (prev_sv);
1982 ta->next = next;
1983
1617 TRANSFER_CHECK (*ta); 1984 TRANSFER_CHECK (*ta);
1618 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1985
1619 ta->next->flags &= ~CF_READY;
1620 SvRV_set (coro_current, next_sv); 1986 SvRV_set (coro_current, (SV *)next->hv);
1621 1987
1622 free_coro_mortal (aTHX); 1988 free_coro_mortal (aTHX);
1623 coro_mortal = prev_sv; 1989 coro_mortal = prev_sv;
1624} 1990}
1625 1991
1626INLINE void 1992static void
1993prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1994{
1995 for (;;)
1996 {
1997 struct coro *next = coro_deq (aTHX);
1998
1999 if (ecb_expect_true (next))
2000 {
2001 /* cannot transfer to destroyed coros, skip and look for next */
2002 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
2003 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
2004 else
2005 {
2006 next->flags &= ~CF_READY;
2007 --coro_nready;
2008
2009 prepare_schedule_to (aTHX_ ta, next);
2010 break;
2011 }
2012 }
2013 else
2014 {
2015 /* nothing to schedule: call the idle handler */
2016 if (SvROK (sv_idle)
2017 && SvOBJECT (SvRV (sv_idle)))
2018 {
2019 if (SvRV (sv_idle) == SvRV (coro_current))
2020 {
2021 require_pv ("Carp");
2022
2023 {
2024 dSP;
2025
2026 ENTER;
2027 SAVETMPS;
2028
2029 PUSHMARK (SP);
2030 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2031 PUTBACK;
2032 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2033
2034 FREETMPS;
2035 LEAVE;
2036 }
2037 }
2038
2039 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2040 api_ready (aTHX_ SvRV (sv_idle));
2041 --coro_nready;
2042 }
2043 else
2044 {
2045 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2046 dSP;
2047
2048 ENTER;
2049 SAVETMPS;
2050
2051 PUSHMARK (SP);
2052 PUTBACK;
2053 call_sv (sv_idle, G_VOID | G_DISCARD);
2054
2055 FREETMPS;
2056 LEAVE;
2057 }
2058 }
2059 }
2060}
2061
2062ecb_inline void
1627prepare_cede (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede (pTHX_ struct coro_transfer_args *ta)
1628{ 2064{
1629 api_ready (aTHX_ coro_current); 2065 api_ready (aTHX_ coro_current);
1630 prepare_schedule (aTHX_ ta); 2066 prepare_schedule (aTHX_ ta);
1631} 2067}
1632 2068
1633INLINE void 2069ecb_inline void
1634prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2070prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1635{ 2071{
1636 SV *prev = SvRV (coro_current); 2072 SV *prev = SvRV (coro_current);
1637 2073
1638 if (coro_nready) 2074 if (coro_nready)
… …
1651 2087
1652 prepare_schedule (aTHX_ &ta); 2088 prepare_schedule (aTHX_ &ta);
1653 TRANSFER (ta, 1); 2089 TRANSFER (ta, 1);
1654} 2090}
1655 2091
2092static void
2093api_schedule_to (pTHX_ SV *coro_sv)
2094{
2095 struct coro_transfer_args ta;
2096 struct coro *next = SvSTATE (coro_sv);
2097
2098 SvREFCNT_inc_NN (coro_sv);
2099 prepare_schedule_to (aTHX_ &ta, next);
2100}
2101
1656static int 2102static int
1657api_cede (pTHX) 2103api_cede (pTHX)
1658{ 2104{
1659 struct coro_transfer_args ta; 2105 struct coro_transfer_args ta;
1660 2106
1661 prepare_cede (aTHX_ &ta); 2107 prepare_cede (aTHX_ &ta);
1662 2108
1663 if (expect_true (ta.prev != ta.next)) 2109 if (ecb_expect_true (ta.prev != ta.next))
1664 { 2110 {
1665 TRANSFER (ta, 1); 2111 TRANSFER (ta, 1);
1666 return 1; 2112 return 1;
1667 } 2113 }
1668 else 2114 else
… …
1687static void 2133static void
1688api_trace (pTHX_ SV *coro_sv, int flags) 2134api_trace (pTHX_ SV *coro_sv, int flags)
1689{ 2135{
1690 struct coro *coro = SvSTATE (coro_sv); 2136 struct coro *coro = SvSTATE (coro_sv);
1691 2137
2138 if (coro->flags & CF_RUNNING)
2139 croak ("cannot enable tracing on a running coroutine, caught");
2140
1692 if (flags & CC_TRACE) 2141 if (flags & CC_TRACE)
1693 { 2142 {
1694 if (!coro->cctx) 2143 if (!coro->cctx)
1695 coro->cctx = cctx_new_run (); 2144 coro->cctx = cctx_new_run ();
1696 else if (!(coro->cctx->flags & CC_TRACE)) 2145 else if (!(coro->cctx->flags & CC_TRACE))
1697 croak ("cannot enable tracing on coroutine with custom stack,"); 2146 croak ("cannot enable tracing on coroutine with custom stack, caught");
1698 2147
1699 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2148 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1700 } 2149 }
1701 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2150 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1702 { 2151 {
… …
1707 else 2156 else
1708 coro->slot->runops = RUNOPS_DEFAULT; 2157 coro->slot->runops = RUNOPS_DEFAULT;
1709 } 2158 }
1710} 2159}
1711 2160
2161static void
2162coro_push_av (pTHX_ AV *av, I32 gimme_v)
2163{
2164 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2165 {
2166 dSP;
2167
2168 if (gimme_v == G_SCALAR)
2169 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2170 else
2171 {
2172 int i;
2173 EXTEND (SP, AvFILLp (av) + 1);
2174
2175 for (i = 0; i <= AvFILLp (av); ++i)
2176 PUSHs (AvARRAY (av)[i]);
2177 }
2178
2179 PUTBACK;
2180 }
2181}
2182
2183static void
2184coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2185{
2186 if (!coro->on_destroy)
2187 coro->on_destroy = newAV ();
2188
2189 av_push (coro->on_destroy, cb);
2190}
2191
2192static void
2193slf_destroy_join (pTHX_ struct CoroSLF *frame)
2194{
2195 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2196}
2197
2198static int
2199slf_check_join (pTHX_ struct CoroSLF *frame)
2200{
2201 struct coro *coro = (struct coro *)frame->data;
2202
2203 if (!coro->status)
2204 return 1;
2205
2206 frame->destroy = 0;
2207
2208 coro_push_av (aTHX_ coro->status, GIMME_V);
2209
2210 SvREFCNT_dec ((SV *)coro->hv);
2211
2212 return 0;
2213}
2214
2215static void
2216slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2217{
2218 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2219
2220 if (items > 1)
2221 croak ("join called with too many arguments");
2222
2223 if (coro->status)
2224 frame->prepare = prepare_nop;
2225 else
2226 {
2227 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2228 frame->prepare = prepare_schedule;
2229 }
2230
2231 frame->check = slf_check_join;
2232 frame->destroy = slf_destroy_join;
2233 frame->data = (void *)coro;
2234 SvREFCNT_inc (coro->hv);
2235}
2236
2237static void
2238coro_call_on_destroy (pTHX_ struct coro *coro)
2239{
2240 AV *od = coro->on_destroy;
2241
2242 if (!od)
2243 return;
2244
2245 coro->on_destroy = 0;
2246 sv_2mortal ((SV *)od);
2247
2248 while (AvFILLp (od) >= 0)
2249 {
2250 SV *cb = sv_2mortal (av_pop (od));
2251
2252 /* coro hv's (and only hv's at the moment) are supported as well */
2253 if (SvSTATEhv_p (aTHX_ cb))
2254 api_ready (aTHX_ cb);
2255 else
2256 {
2257 dSP; /* don't disturb outer sp */
2258 PUSHMARK (SP);
2259
2260 if (coro->status)
2261 {
2262 PUTBACK;
2263 coro_push_av (aTHX_ coro->status, G_ARRAY);
2264 SPAGAIN;
2265 }
2266
2267 PUTBACK;
2268 call_sv (cb, G_VOID | G_DISCARD);
2269 }
2270 }
2271}
2272
2273static void
2274coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2275{
2276 AV *av;
2277
2278 if (coro->status)
2279 {
2280 av = coro->status;
2281 av_clear (av);
2282 }
2283 else
2284 av = coro->status = newAV ();
2285
2286 /* items are actually not so common, so optimise for this case */
2287 if (items)
2288 {
2289 int i;
2290
2291 av_extend (av, items - 1);
2292
2293 for (i = 0; i < items; ++i)
2294 av_push (av, SvREFCNT_inc_NN (arg [i]));
2295 }
2296}
2297
2298static void
2299slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2300{
2301 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2302 api_ready (aTHX_ sv_manager);
2303
2304 frame->prepare = prepare_schedule;
2305 frame->check = slf_check_repeat;
2306
2307 /* as a minor optimisation, we could unwind all stacks here */
2308 /* but that puts extra pressure on pp_slf, and is not worth much */
2309 /*coro_unwind_stacks (aTHX);*/
2310}
2311
2312static void
2313slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2314{
2315 HV *coro_hv = (HV *)SvRV (coro_current);
2316
2317 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2318 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2319}
2320
2321static void
2322slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *coro_hv;
2325 struct coro *coro;
2326
2327 if (items <= 0)
2328 croak ("Coro::cancel called without coro object,");
2329
2330 coro = SvSTATE (arg [0]);
2331 coro_hv = coro->hv;
2332
2333 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2334
2335 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2336 {
2337 /* coro currently busy cancelling something, so just notify it */
2338 coro->slf_frame.data = (void *)coro;
2339
2340 frame->prepare = prepare_nop;
2341 frame->check = slf_check_nop;
2342 }
2343 else if (coro_hv == (HV *)SvRV (coro_current))
2344 {
2345 /* cancelling the current coro is allowed, and equals terminate */
2346 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2347 }
2348 else
2349 {
2350 struct coro *self = SvSTATE_current;
2351
2352 if (!self)
2353 croak ("Coro::cancel called outside of thread content,");
2354
2355 /* otherwise we cancel directly, purely for speed reasons
2356 * unfortunately, this requires some magic trickery, as
2357 * somebody else could cancel us, so we have to fight the cancellation.
2358 * this is ugly, and hopefully fully worth the extra speed.
2359 * besides, I can't get the slow-but-safe version working...
2360 */
2361 slf_frame.data = 0;
2362 self->flags |= CF_NOCANCEL;
2363 coro_state_destroy (aTHX_ coro);
2364 self->flags &= ~CF_NOCANCEL;
2365
2366 if (slf_frame.data)
2367 {
2368 /* while we were busy we have been cancelled, so terminate */
2369 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2370 }
2371 else
2372 {
2373 frame->prepare = prepare_nop;
2374 frame->check = slf_check_nop;
2375 }
2376 }
2377}
2378
2379static int
2380slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2381{
2382 frame->prepare = 0;
2383 coro_unwind_stacks (aTHX);
2384
2385 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2386
2387 return 1;
2388}
2389
2390static int
2391safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2392{
2393 if (coro->cctx)
2394 croak ("coro inside C callback, unable to cancel at this time, caught");
2395
2396 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2397 {
2398 coro_set_status (aTHX_ coro, arg, items);
2399 coro_state_destroy (aTHX_ coro);
2400 }
2401 else
2402 {
2403 if (!coro->slf_frame.prepare)
2404 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2405
2406 slf_destroy (aTHX_ coro);
2407
2408 coro_set_status (aTHX_ coro, arg, items);
2409 coro->slf_frame.prepare = prepare_nop;
2410 coro->slf_frame.check = slf_check_safe_cancel;
2411
2412 api_ready (aTHX_ (SV *)coro->hv);
2413 }
2414
2415 return 1;
2416}
2417
2418/*****************************************************************************/
2419/* async pool handler */
2420
2421static int
2422slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2423{
2424 HV *hv = (HV *)SvRV (coro_current);
2425 struct coro *coro = (struct coro *)frame->data;
2426
2427 if (!coro->invoke_cb)
2428 return 1; /* loop till we have invoke */
2429 else
2430 {
2431 hv_store (hv, "desc", sizeof ("desc") - 1,
2432 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2433
2434 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2435
2436 {
2437 dSP;
2438 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2439 PUTBACK;
2440 }
2441
2442 SvREFCNT_dec (GvAV (PL_defgv));
2443 GvAV (PL_defgv) = coro->invoke_av;
2444 coro->invoke_av = 0;
2445
2446 return 0;
2447 }
2448}
2449
2450static void
2451slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2452{
2453 HV *hv = (HV *)SvRV (coro_current);
2454 struct coro *coro = SvSTATE_hv ((SV *)hv);
2455
2456 if (ecb_expect_true (coro->saved_deffh))
2457 {
2458 /* subsequent iteration */
2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2460 coro->saved_deffh = 0;
2461
2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2464 {
2465 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2466 return;
2467 }
2468 else
2469 {
2470 av_clear (GvAV (PL_defgv));
2471 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2472
2473 if (ecb_expect_false (coro->swap_sv))
2474 {
2475 SWAP_SVS_LEAVE (coro);
2476 SvREFCNT_dec_NN (coro->swap_sv);
2477 coro->swap_sv = 0;
2478 }
2479
2480 coro->prio = 0;
2481
2482 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2483 api_trace (aTHX_ coro_current, 0);
2484
2485 frame->prepare = prepare_schedule;
2486 av_push (av_async_pool, SvREFCNT_inc_NN (hv));
2487 }
2488 }
2489 else
2490 {
2491 /* first iteration, simply fall through */
2492 frame->prepare = prepare_nop;
2493 }
2494
2495 frame->check = slf_check_pool_handler;
2496 frame->data = (void *)coro;
2497}
2498
2499/*****************************************************************************/
2500/* rouse callback */
2501
2502#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2503
2504static void
2505coro_rouse_callback (pTHX_ CV *cv)
2506{
2507 dXSARGS;
2508 SV *data = (SV *)S_GENSUB_ARG;
2509 SV *coro = SvRV (data);
2510
2511 /* data starts being either undef or a coro, and is replaced by the results when done */
2512 if (SvTYPE (coro) != SVt_PVAV)
2513 {
2514 /* first call, set args */
2515
2516 assert (&ST (0) < &ST (1)); /* ensure the stack is in the order we expect it to be */
2517 SvRV_set (data, (SV *)av_make (items, &ST (0))); /* av_make copies the SVs */
2518
2519 if (coro != &PL_sv_undef)
2520 {
2521 api_ready (aTHX_ coro);
2522 SvREFCNT_dec_NN (coro);
2523 }
2524 }
2525
2526 XSRETURN_EMPTY;
2527}
2528
2529static int
2530slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2531{
2532 SV *data = (SV *)frame->data;
2533
2534 if (CORO_THROW)
2535 return 0;
2536
2537 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2538 return 1;
2539
2540 /* now push all results on the stack */
2541 {
2542 dSP;
2543 AV *av = (AV *)SvRV (data);
2544 int i;
2545
2546 EXTEND (SP, AvFILLp (av) + 1);
2547 for (i = 0; i <= AvFILLp (av); ++i)
2548 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2549
2550 /* we have stolen the elements, make it unreal and free */
2551 AvREAL_off (av);
2552 av_undef (av);
2553
2554 PUTBACK;
2555 }
2556
2557 return 0;
2558}
2559
2560static void
2561slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 SV *cb;
2564
2565 if (items)
2566 cb = arg [0];
2567 else
2568 {
2569 struct coro *coro = SvSTATE_current;
2570
2571 if (!coro->rouse_cb)
2572 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2573
2574 cb = sv_2mortal (coro->rouse_cb);
2575 coro->rouse_cb = 0;
2576 }
2577
2578 if (!SvROK (cb)
2579 || SvTYPE (SvRV (cb)) != SVt_PVCV
2580 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2581 croak ("Coro::rouse_wait called with illegal callback argument,");
2582
2583 {
2584 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2585 SV *data = (SV *)S_GENSUB_ARG;
2586 int data_ready = SvTYPE (SvRV (data)) == SVt_PVAV;
2587
2588 /* if there is no data, we need to store the current coro in the reference so we can be woken up */
2589 if (!data_ready)
2590 if (SvRV (data) != &PL_sv_undef)
2591 croak ("Coro::rouse_wait was called on a calback that is already being waited for - only one thread can wait for a rouse callback, caught");
2592 else
2593 SvRV_set (data, SvREFCNT_inc_NN (SvRV (coro_current)));
2594
2595 frame->data = (void *)data;
2596 frame->prepare = data_ready ? prepare_nop : prepare_schedule;
2597 frame->check = slf_check_rouse_wait;
2598 }
2599}
2600
2601static SV *
2602coro_new_rouse_cb (pTHX)
2603{
2604 HV *hv = (HV *)SvRV (coro_current);
2605 struct coro *coro = SvSTATE_hv (hv);
2606 SV *data = newRV_noinc (&PL_sv_undef);
2607 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2608
2609 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2610 SvREFCNT_dec_NN (data); /* magicext increases the refcount */
2611
2612 SvREFCNT_dec (coro->rouse_cb);
2613 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2614
2615 return cb;
2616}
2617
2618/*****************************************************************************/
2619/* schedule-like-function opcode (SLF) */
2620
2621static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2622static const CV *slf_cv;
2623static SV **slf_argv;
2624static int slf_argc, slf_arga; /* count, allocated */
2625static I32 slf_ax; /* top of stack, for restore */
2626
2627/* this restores the stack in the case we patched the entersub, to */
2628/* recreate the stack frame as perl will on following calls */
2629/* since entersub cleared the stack */
2630static OP *
2631pp_restore (pTHX)
2632{
2633 int i;
2634 SV **SP = PL_stack_base + slf_ax;
2635
2636 PUSHMARK (SP);
2637
2638 EXTEND (SP, slf_argc + 1);
2639
2640 for (i = 0; i < slf_argc; ++i)
2641 PUSHs (sv_2mortal (slf_argv [i]));
2642
2643 PUSHs ((SV *)CvGV (slf_cv));
2644
2645 RETURNOP (slf_restore.op_first);
2646}
2647
2648static void
2649slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2650{
2651 SV **arg = (SV **)slf_frame.data;
2652
2653 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2654}
2655
2656static void
2657slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2658{
2659 if (items != 2)
2660 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2661
2662 frame->prepare = slf_prepare_transfer;
2663 frame->check = slf_check_nop;
2664 frame->data = (void *)arg; /* let's hope it will stay valid */
2665}
2666
2667static void
2668slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2669{
2670 frame->prepare = prepare_schedule;
2671 frame->check = slf_check_nop;
2672}
2673
2674static void
2675slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2676{
2677 struct coro *next = (struct coro *)slf_frame.data;
2678
2679 SvREFCNT_inc_NN (next->hv);
2680 prepare_schedule_to (aTHX_ ta, next);
2681}
2682
2683static void
2684slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2685{
2686 if (!items)
2687 croak ("Coro::schedule_to expects a coroutine argument, caught");
2688
2689 frame->data = (void *)SvSTATE (arg [0]);
2690 frame->prepare = slf_prepare_schedule_to;
2691 frame->check = slf_check_nop;
2692}
2693
2694static void
2695slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2696{
2697 api_ready (aTHX_ SvRV (coro_current));
2698
2699 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2700}
2701
2702static void
2703slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2704{
2705 frame->prepare = prepare_cede;
2706 frame->check = slf_check_nop;
2707}
2708
2709static void
2710slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2711{
2712 frame->prepare = prepare_cede_notself;
2713 frame->check = slf_check_nop;
2714}
2715
2716/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2717static void
2718slf_destroy (pTHX_ struct coro *coro)
2719{
2720 struct CoroSLF frame = coro->slf_frame;
2721
2722 /*
2723 * The on_destroy below most likely is from an SLF call.
2724 * Since by definition the SLF call will not finish when we destroy
2725 * the coro, we will have to force-finish it here, otherwise
2726 * cleanup functions cannot call SLF functions.
2727 */
2728 coro->slf_frame.prepare = 0;
2729
2730 /* this callback is reserved for slf functions needing to do cleanup */
2731 if (frame.destroy && frame.prepare && !PL_dirty)
2732 frame.destroy (aTHX_ &frame);
2733}
2734
2735/*
2736 * these not obviously related functions are all rolled into one
2737 * function to increase chances that they all will call transfer with the same
2738 * stack offset
2739 * SLF stands for "schedule-like-function".
2740 */
2741static OP *
2742pp_slf (pTHX)
2743{
2744 I32 checkmark; /* mark SP to see how many elements check has pushed */
2745
2746 /* set up the slf frame, unless it has already been set-up */
2747 /* the latter happens when a new coro has been started */
2748 /* or when a new cctx was attached to an existing coroutine */
2749 if (ecb_expect_true (!slf_frame.prepare))
2750 {
2751 /* first iteration */
2752 dSP;
2753 SV **arg = PL_stack_base + TOPMARK + 1;
2754 int items = SP - arg; /* args without function object */
2755 SV *gv = *sp;
2756
2757 /* do a quick consistency check on the "function" object, and if it isn't */
2758 /* for us, divert to the real entersub */
2759 if (SvTYPE (gv) != SVt_PVGV
2760 || !GvCV (gv)
2761 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2762 return PL_ppaddr[OP_ENTERSUB](aTHX);
2763
2764 if (!(PL_op->op_flags & OPf_STACKED))
2765 {
2766 /* ampersand-form of call, use @_ instead of stack */
2767 AV *av = GvAV (PL_defgv);
2768 arg = AvARRAY (av);
2769 items = AvFILLp (av) + 1;
2770 }
2771
2772 /* now call the init function, which needs to set up slf_frame */
2773 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2774 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2775
2776 /* pop args */
2777 SP = PL_stack_base + POPMARK;
2778
2779 PUTBACK;
2780 }
2781
2782 /* now that we have a slf_frame, interpret it! */
2783 /* we use a callback system not to make the code needlessly */
2784 /* complicated, but so we can run multiple perl coros from one cctx */
2785
2786 do
2787 {
2788 struct coro_transfer_args ta;
2789
2790 slf_frame.prepare (aTHX_ &ta);
2791 TRANSFER (ta, 0);
2792
2793 checkmark = PL_stack_sp - PL_stack_base;
2794 }
2795 while (slf_frame.check (aTHX_ &slf_frame));
2796
2797 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2798
2799 /* exception handling */
2800 if (ecb_expect_false (CORO_THROW))
2801 {
2802 SV *exception = sv_2mortal (CORO_THROW);
2803
2804 CORO_THROW = 0;
2805 sv_setsv (ERRSV, exception);
2806 croak (0);
2807 }
2808
2809 /* return value handling - mostly like entersub */
2810 /* make sure we put something on the stack in scalar context */
2811 if (GIMME_V == G_SCALAR
2812 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2813 {
2814 dSP;
2815 SV **bot = PL_stack_base + checkmark;
2816
2817 if (sp == bot) /* too few, push undef */
2818 bot [1] = &PL_sv_undef;
2819 else /* too many, take last one */
2820 bot [1] = *sp;
2821
2822 SP = bot + 1;
2823
2824 PUTBACK;
2825 }
2826
2827 return NORMAL;
2828}
2829
2830static void
2831api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2832{
2833 int i;
2834 SV **arg = PL_stack_base + ax;
2835 int items = PL_stack_sp - arg + 1;
2836
2837 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2838
2839 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2840 && PL_op->op_ppaddr != pp_slf)
2841 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2842
2843 CvFLAGS (cv) |= CVf_SLF;
2844 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2845 slf_cv = cv;
2846
2847 /* we patch the op, and then re-run the whole call */
2848 /* we have to put the same argument on the stack for this to work */
2849 /* and this will be done by pp_restore */
2850 slf_restore.op_next = (OP *)&slf_restore;
2851 slf_restore.op_type = OP_CUSTOM;
2852 slf_restore.op_ppaddr = pp_restore;
2853 slf_restore.op_first = PL_op;
2854
2855 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2856
2857 if (PL_op->op_flags & OPf_STACKED)
2858 {
2859 if (items > slf_arga)
2860 {
2861 slf_arga = items;
2862 Safefree (slf_argv);
2863 New (0, slf_argv, slf_arga, SV *);
2864 }
2865
2866 slf_argc = items;
2867
2868 for (i = 0; i < items; ++i)
2869 slf_argv [i] = SvREFCNT_inc (arg [i]);
2870 }
2871 else
2872 slf_argc = 0;
2873
2874 PL_op->op_ppaddr = pp_slf;
2875 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2876
2877 PL_op = (OP *)&slf_restore;
2878}
2879
2880/*****************************************************************************/
2881/* dynamic wind */
2882
2883static void
2884on_enterleave_call (pTHX_ SV *cb)
2885{
2886 dSP;
2887
2888 PUSHSTACK;
2889
2890 PUSHMARK (SP);
2891 PUTBACK;
2892 call_sv (cb, G_VOID | G_DISCARD);
2893 SPAGAIN;
2894
2895 POPSTACK;
2896}
2897
2898static SV *
2899coro_avp_pop_and_free (pTHX_ AV **avp)
2900{
2901 AV *av = *avp;
2902 SV *res = av_pop (av);
2903
2904 if (AvFILLp (av) < 0)
2905 {
2906 *avp = 0;
2907 SvREFCNT_dec (av);
2908 }
2909
2910 return res;
2911}
2912
2913static void
2914coro_pop_on_enter (pTHX_ void *coro)
2915{
2916 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2917 SvREFCNT_dec (cb);
2918}
2919
2920static void
2921coro_pop_on_leave (pTHX_ void *coro)
2922{
2923 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2924 on_enterleave_call (aTHX_ sv_2mortal (cb));
2925}
2926
2927static void
2928enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2929{
2930 if (!hook)
2931 return;
2932
2933 if (!*avp)
2934 {
2935 *avp = newAV ();
2936 AvREAL_off (*avp);
2937 }
2938
2939 av_push (*avp, (SV *)hook);
2940 av_push (*avp, (SV *)arg);
2941}
2942
2943static void
2944enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2945{
2946 AV *av = *avp;
2947 int i;
2948
2949 if (!av)
2950 return;
2951
2952 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2953 if (AvARRAY (av)[i] == (SV *)hook)
2954 {
2955 if (execute)
2956 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2957
2958 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2959 av_pop (av);
2960 av_pop (av);
2961 break;
2962 }
2963
2964 if (AvFILLp (av) >= 0)
2965 {
2966 *avp = 0;
2967 SvREFCNT_dec_NN (av);
2968 }
2969}
2970
2971static void
2972api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2973{
2974 struct coro *coro = SvSTATE (coro_sv);
2975
2976 if (SvSTATE_current == coro)
2977 if (enter)
2978 enter (aTHX_ enter_arg);
2979
2980 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2981 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2982}
2983
2984static void
2985api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2986{
2987 struct coro *coro = SvSTATE (coro_sv);
2988
2989 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2990 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2991}
2992
2993static void
2994savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2995{
2996 struct coro *coro = SvSTATE_current;
2997
2998 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2999}
3000
3001static void
3002savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
3003{
3004 struct coro *coro = SvSTATE_current;
3005
3006 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
3007}
3008
3009static void
3010api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
3011{
3012 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
3013
3014 /* this ought to be much cheaper than malloc + a single destructor call */
3015 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
3016 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
3017}
3018
1712/*****************************************************************************/ 3019/*****************************************************************************/
1713/* PerlIO::cede */ 3020/* PerlIO::cede */
1714 3021
1715typedef struct 3022typedef struct
1716{ 3023{
1717 PerlIOBuf base; 3024 PerlIOBuf base;
1718 NV next, every; 3025 NV next, every;
1719} PerlIOCede; 3026} PerlIOCede;
1720 3027
1721static IV 3028static IV ecb_cold
1722PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3029PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1723{ 3030{
1724 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3031 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1725 3032
1726 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3033 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1727 self->next = nvtime () + self->every; 3034 self->next = nvtime () + self->every;
1728 3035
1729 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3036 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1730} 3037}
1731 3038
1732static SV * 3039static SV * ecb_cold
1733PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3040PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1734{ 3041{
1735 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3042 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1736 3043
1737 return newSVnv (self->every); 3044 return newSVnv (self->every);
… …
1783 PerlIOBuf_get_cnt, 3090 PerlIOBuf_get_cnt,
1784 PerlIOBuf_set_ptrcnt, 3091 PerlIOBuf_set_ptrcnt,
1785}; 3092};
1786 3093
1787/*****************************************************************************/ 3094/*****************************************************************************/
3095/* Coro::Semaphore & Coro::Signal */
1788 3096
1789static const CV *slf_cv; /* for quick consistency check */
1790
1791static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1792static SV *slf_arg0;
1793static SV *slf_arg1;
1794static SV *slf_arg2;
1795
1796/* this restores the stack in the case we patched the entersub, to */
1797/* recreate the stack frame as perl will on following calls */
1798/* since entersub cleared the stack */
1799static OP * 3097static SV *
1800pp_restore (pTHX) 3098coro_waitarray_new (pTHX_ int count)
1801{ 3099{
1802 dSP; 3100 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3101 AV *av = newAV ();
3102 SV **ary;
1803 3103
1804 PUSHMARK (SP); 3104 /* unfortunately, building manually saves memory */
3105 Newx (ary, 2, SV *);
3106 AvALLOC (av) = ary;
3107#if PERL_VERSION_ATLEAST (5,10,0)
3108 AvARRAY (av) = ary;
3109#else
3110 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3111 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3112 SvPVX ((SV *)av) = (char *)ary;
3113#endif
3114 AvMAX (av) = 1;
3115 AvFILLp (av) = 0;
3116 ary [0] = newSViv (count);
1805 3117
1806 EXTEND (SP, 3); 3118 return newRV_noinc ((SV *)av);
1807 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1808 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1809 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1810 PUSHs ((SV *)CvGV (slf_cv));
1811
1812 RETURNOP (slf_restore.op_first);
1813} 3119}
1814 3120
1815static void 3121/* semaphore */
1816slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1817{
1818 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1819}
1820
1821static void
1822slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1823{
1824 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1825
1826 frame->prepare = slf_prepare_set_stacklevel;
1827 frame->check = slf_check_nop;
1828 frame->data = (void *)SvIV (arg [0]);
1829}
1830
1831static void
1832slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1833{
1834 SV **arg = (SV **)slf_frame.data;
1835
1836 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1837}
1838
1839static void
1840slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1841{
1842 if (items != 2)
1843 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1844
1845 frame->prepare = slf_prepare_transfer;
1846 frame->check = slf_check_nop;
1847 frame->data = (void *)arg; /* let's hope it will stay valid */
1848}
1849
1850static void
1851slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede;
1861 frame->check = slf_check_nop;
1862}
1863
1864static void
1865slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1866{
1867 frame->prepare = prepare_cede_notself;
1868 frame->check = slf_check_nop;
1869}
1870
1871/* we hijack an hopefully unused CV flag for our purposes */
1872#define CVf_SLF 0x4000
1873
1874/*
1875 * these not obviously related functions are all rolled into one
1876 * function to increase chances that they all will call transfer with the same
1877 * stack offset
1878 * SLF stands for "schedule-like-function".
1879 */
1880static OP *
1881pp_slf (pTHX)
1882{
1883 I32 checkmark; /* mark SP to see how many elements check has pushed */
1884
1885 /* set up the slf frame, unless it has already been set-up */
1886 /* the latter happens when a new coro has been started */
1887 /* or when a new cctx was attached to an existing coroutine */
1888 if (expect_true (!slf_frame.prepare))
1889 {
1890 /* first iteration */
1891 dSP;
1892 SV **arg = PL_stack_base + TOPMARK + 1;
1893 int items = SP - arg; /* args without function object */
1894 SV *gv = *sp;
1895
1896 /* do a quick consistency check on the "function" object, and if it isn't */
1897 /* for us, divert to the real entersub */
1898 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1899 return PL_ppaddr[OP_ENTERSUB](aTHX);
1900
1901 /* pop args */
1902 SP = PL_stack_base + POPMARK;
1903
1904 if (!(PL_op->op_flags & OPf_STACKED))
1905 {
1906 /* ampersand-form of call, use @_ instead of stack */
1907 AV *av = GvAV (PL_defgv);
1908 arg = AvARRAY (av);
1909 items = AvFILLp (av) + 1;
1910 }
1911
1912 PUTBACK;
1913
1914 /* now call the init function, which needs to set up slf_frame */
1915 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1916 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1917 }
1918
1919 /* now that we have a slf_frame, interpret it! */
1920 /* we use a callback system not to make the code needlessly */
1921 /* complicated, but so we can run multiple perl coros from one cctx */
1922
1923 do
1924 {
1925 struct coro_transfer_args ta;
1926
1927 slf_frame.prepare (aTHX_ &ta);
1928 TRANSFER (ta, 0);
1929
1930 checkmark = PL_stack_sp - PL_stack_base;
1931 }
1932 while (slf_frame.check (aTHX_ &slf_frame));
1933
1934 {
1935 dSP;
1936 SV **bot = PL_stack_base + checkmark;
1937 int gimme = GIMME_V;
1938
1939 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1940
1941 /* make sure we put something on the stack in scalar context */
1942 if (gimme == G_SCALAR)
1943 {
1944 if (sp == bot)
1945 XPUSHs (&PL_sv_undef);
1946
1947 SP = bot + 1;
1948 }
1949
1950 PUTBACK;
1951 }
1952
1953 return NORMAL;
1954}
1955
1956static void
1957api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1958{
1959 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1960
1961 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1962 && PL_op->op_ppaddr != pp_slf)
1963 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1964
1965 if (items > 3)
1966 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1967
1968 CvFLAGS (cv) |= CVf_SLF;
1969 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1970 slf_cv = cv;
1971
1972 /* we patch the op, and then re-run the whole call */
1973 /* we have to put the same argument on the stack for this to work */
1974 /* and this will be done by pp_restore */
1975 slf_restore.op_next = (OP *)&slf_restore;
1976 slf_restore.op_type = OP_CUSTOM;
1977 slf_restore.op_ppaddr = pp_restore;
1978 slf_restore.op_first = PL_op;
1979
1980 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1981 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1982 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1983
1984 PL_op->op_ppaddr = pp_slf;
1985
1986 PL_op = (OP *)&slf_restore;
1987}
1988
1989/*****************************************************************************/
1990 3122
1991static void 3123static void
1992coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3124coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1993{ 3125{
1994 SV *count_sv = AvARRAY (av)[0]; 3126 SV *count_sv = AvARRAY (av)[0];
… …
2006 AvARRAY (av)[0] = AvARRAY (av)[1]; 3138 AvARRAY (av)[0] = AvARRAY (av)[1];
2007 AvARRAY (av)[1] = count_sv; 3139 AvARRAY (av)[1] = count_sv;
2008 cb = av_shift (av); 3140 cb = av_shift (av);
2009 3141
2010 if (SvOBJECT (cb)) 3142 if (SvOBJECT (cb))
3143 {
2011 api_ready (aTHX_ cb); 3144 api_ready (aTHX_ cb);
2012 else 3145 --count;
2013 croak ("callbacks not yet supported"); 3146 }
3147 else if (SvTYPE (cb) == SVt_PVCV)
3148 {
3149 dSP;
3150 PUSHMARK (SP);
3151 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3152 PUTBACK;
3153 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3154 }
2014 3155
2015 SvREFCNT_dec (cb); 3156 SvREFCNT_dec_NN (cb);
2016
2017 --count;
2018 } 3157 }
2019} 3158}
2020 3159
2021static void 3160static void
2022coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3161coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2023{ 3162{
2024 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3163 /* call $sem->adjust (0) to possibly wake up some other waiters */
2025 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3164 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2026} 3165}
2027 3166
2028static int 3167static int
2029slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3168slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2030{ 3169{
2031 AV *av = (AV *)frame->data; 3170 AV *av = (AV *)frame->data;
2032 SV *count_sv = AvARRAY (av)[0]; 3171 SV *count_sv = AvARRAY (av)[0];
3172 SV *coro_hv = SvRV (coro_current);
2033 3173
3174 frame->destroy = 0;
3175
3176 /* if we are about to throw, don't actually acquire the lock, just throw */
3177 if (ecb_expect_false (CORO_THROW))
3178 {
3179 /* we still might be responsible for the semaphore, so wake up others */
3180 coro_semaphore_adjust (aTHX_ av, 0);
3181
3182 return 0;
3183 }
2034 if (SvIVX (count_sv) > 0) 3184 else if (SvIVX (count_sv) > 0)
2035 { 3185 {
2036 SvSTATE_current->on_destroy = 0; 3186 if (acquire)
2037 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3187 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3188 else
3189 coro_semaphore_adjust (aTHX_ av, 0);
3190
2038 return 0; 3191 return 0;
2039 } 3192 }
2040 else 3193 else
2041 { 3194 {
2042 int i; 3195 int i;
2043 /* if we were woken up but can't down, we look through the whole */ 3196 /* if we were woken up but can't down, we look through the whole */
2044 /* waiters list and only add us if we aren't in there already */ 3197 /* waiters list and only add us if we aren't in there already */
2045 /* this avoids some degenerate memory usage cases */ 3198 /* this avoids some degenerate memory usage cases */
2046 3199 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2047 for (i = 1; i <= AvFILLp (av); ++i)
2048 if (AvARRAY (av)[i] == SvRV (coro_current)) 3200 if (AvARRAY (av)[i] == coro_hv)
2049 return 1; 3201 return 1;
2050 3202
2051 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3203 av_push (av, SvREFCNT_inc (coro_hv));
2052 return 1; 3204 return 1;
2053 } 3205 }
2054} 3206}
2055 3207
2056static void 3208static int
3209slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3210{
3211 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3212}
3213
3214static int
3215slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3216{
3217 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3218}
3219
3220static void
2057slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3221slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2058{ 3222{
2059 AV *av = (AV *)SvRV (arg [0]); 3223 AV *av = (AV *)SvRV (arg [0]);
2060 3224
2061 if (SvIVX (AvARRAY (av)[0]) > 0) 3225 if (SvIVX (AvARRAY (av)[0]) > 0)
2062 { 3226 {
2063 frame->data = (void *)av; 3227 frame->data = (void *)av;
2064 frame->prepare = prepare_nop; 3228 frame->prepare = prepare_nop;
2065 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2066 } 3229 }
2067 else 3230 else
2068 { 3231 {
2069 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3232 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2070 3233
2071 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3234 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2072 frame->prepare = prepare_schedule; 3235 frame->prepare = prepare_schedule;
2073
2074 /* to avoid race conditions when a woken-up coro gets terminated */ 3236 /* to avoid race conditions when a woken-up coro gets terminated */
2075 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3237 /* we arrange for a temporary on_destroy that calls adjust (0) */
2076 assert (!SvSTATE_current->on_destroy);//D
2077 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3238 frame->destroy = coro_semaphore_destroy;
2078 } 3239 }
3240}
2079 3241
3242static void
3243slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3244{
3245 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2080 frame->check = slf_check_semaphore_down; 3246 frame->check = slf_check_semaphore_down;
3247}
2081 3248
3249static void
3250slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3251{
3252 if (items >= 2)
3253 {
3254 /* callback form */
3255 AV *av = (AV *)SvRV (arg [0]);
3256 SV *cb_cv = s_get_cv_croak (arg [1]);
3257
3258 av_push (av, SvREFCNT_inc_NN (cb_cv));
3259
3260 if (SvIVX (AvARRAY (av)[0]) > 0)
3261 coro_semaphore_adjust (aTHX_ av, 0);
3262
3263 frame->prepare = prepare_nop;
3264 frame->check = slf_check_nop;
3265 }
3266 else
3267 {
3268 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3269 frame->check = slf_check_semaphore_wait;
3270 }
3271}
3272
3273/* signal */
3274
3275static void
3276coro_signal_wake (pTHX_ AV *av, int count)
3277{
3278 SvIVX (AvARRAY (av)[0]) = 0;
3279
3280 /* now signal count waiters */
3281 while (count > 0 && AvFILLp (av) > 0)
3282 {
3283 SV *cb;
3284
3285 /* swap first two elements so we can shift a waiter */
3286 cb = AvARRAY (av)[0];
3287 AvARRAY (av)[0] = AvARRAY (av)[1];
3288 AvARRAY (av)[1] = cb;
3289
3290 cb = av_shift (av);
3291
3292 if (SvTYPE (cb) == SVt_PVCV)
3293 {
3294 dSP;
3295 PUSHMARK (SP);
3296 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3297 PUTBACK;
3298 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3299 }
3300 else
3301 {
3302 api_ready (aTHX_ cb);
3303 sv_setiv (cb, 0); /* signal waiter */
3304 }
3305
3306 SvREFCNT_dec_NN (cb);
3307
3308 --count;
3309 }
3310}
3311
3312static int
3313slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3314{
3315 /* if we are about to throw, also stop waiting */
3316 return SvROK ((SV *)frame->data) && !CORO_THROW;
3317}
3318
3319static void
3320slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3321{
3322 AV *av = (AV *)SvRV (arg [0]);
3323
3324 if (items >= 2)
3325 {
3326 SV *cb_cv = s_get_cv_croak (arg [1]);
3327 av_push (av, SvREFCNT_inc_NN (cb_cv));
3328
3329 if (SvIVX (AvARRAY (av)[0]))
3330 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3331
3332 frame->prepare = prepare_nop;
3333 frame->check = slf_check_nop;
3334 }
3335 else if (SvIVX (AvARRAY (av)[0]))
3336 {
3337 SvIVX (AvARRAY (av)[0]) = 0;
3338 frame->prepare = prepare_nop;
3339 frame->check = slf_check_nop;
3340 }
3341 else
3342 {
3343 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3344
3345 av_push (av, waiter);
3346
3347 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3348 frame->prepare = prepare_schedule;
3349 frame->check = slf_check_signal_wait;
3350 }
2082} 3351}
2083 3352
2084/*****************************************************************************/ 3353/*****************************************************************************/
3354/* Coro::AIO */
2085 3355
2086#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3356#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2087 3357
2088/* create a closure from XS, returns a code reference */ 3358/* helper storage struct */
2089/* the arg can be accessed via GENSUB_ARG from the callback */ 3359struct io_state
2090/* the callback must use dXSARGS/XSRETURN */ 3360{
3361 int errorno;
3362 I32 laststype; /* U16 in 5.10.0 */
3363 int laststatval;
3364 Stat_t statcache;
3365};
3366
3367static void
3368coro_aio_callback (pTHX_ CV *cv)
3369{
3370 dXSARGS;
3371 AV *state = (AV *)S_GENSUB_ARG;
3372 SV *coro = av_pop (state);
3373 SV *data_sv = newSV (sizeof (struct io_state));
3374
3375 av_extend (state, items - 1);
3376
3377 sv_upgrade (data_sv, SVt_PV);
3378 SvCUR_set (data_sv, sizeof (struct io_state));
3379 SvPOK_only (data_sv);
3380
3381 {
3382 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3383
3384 data->errorno = errno;
3385 data->laststype = PL_laststype;
3386 data->laststatval = PL_laststatval;
3387 data->statcache = PL_statcache;
3388 }
3389
3390 /* now build the result vector out of all the parameters and the data_sv */
3391 {
3392 int i;
3393
3394 for (i = 0; i < items; ++i)
3395 av_push (state, SvREFCNT_inc_NN (ST (i)));
3396 }
3397
3398 av_push (state, data_sv);
3399
3400 api_ready (aTHX_ coro);
3401 SvREFCNT_dec_NN (coro);
3402 SvREFCNT_dec_NN ((AV *)state);
3403}
3404
3405static int
3406slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3407{
3408 AV *state = (AV *)frame->data;
3409
3410 /* if we are about to throw, return early */
3411 /* this does not cancel the aio request, but at least */
3412 /* it quickly returns */
3413 if (CORO_THROW)
3414 return 0;
3415
3416 /* one element that is an RV? repeat! */
3417 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3418 return 1;
3419
3420 /* restore status */
3421 {
3422 SV *data_sv = av_pop (state);
3423 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3424
3425 errno = data->errorno;
3426 PL_laststype = data->laststype;
3427 PL_laststatval = data->laststatval;
3428 PL_statcache = data->statcache;
3429
3430 SvREFCNT_dec_NN (data_sv);
3431 }
3432
3433 /* push result values */
3434 {
3435 dSP;
3436 int i;
3437
3438 EXTEND (SP, AvFILLp (state) + 1);
3439 for (i = 0; i <= AvFILLp (state); ++i)
3440 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3441
3442 PUTBACK;
3443 }
3444
3445 return 0;
3446}
3447
3448static void
3449slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3450{
3451 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3452 SV *coro_hv = SvRV (coro_current);
3453 struct coro *coro = SvSTATE_hv (coro_hv);
3454
3455 /* put our coroutine id on the state arg */
3456 av_push (state, SvREFCNT_inc_NN (coro_hv));
3457
3458 /* first see whether we have a non-zero priority and set it as AIO prio */
3459 if (coro->prio)
3460 {
3461 dSP;
3462
3463 static SV *prio_cv;
3464 static SV *prio_sv;
3465
3466 if (ecb_expect_false (!prio_cv))
3467 {
3468 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3469 prio_sv = newSViv (0);
3470 }
3471
3472 PUSHMARK (SP);
3473 sv_setiv (prio_sv, coro->prio);
3474 XPUSHs (prio_sv);
3475
3476 PUTBACK;
3477 call_sv (prio_cv, G_VOID | G_DISCARD);
3478 }
3479
3480 /* now call the original request */
3481 {
3482 dSP;
3483 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3484 int i;
3485
3486 PUSHMARK (SP);
3487
3488 /* first push all args to the stack */
3489 EXTEND (SP, items + 1);
3490
3491 for (i = 0; i < items; ++i)
3492 PUSHs (arg [i]);
3493
3494 /* now push the callback closure */
3495 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3496
3497 /* now call the AIO function - we assume our request is uncancelable */
3498 PUTBACK;
3499 call_sv ((SV *)req, G_VOID | G_DISCARD);
3500 }
3501
3502 /* now that the request is going, we loop till we have a result */
3503 frame->data = (void *)state;
3504 frame->prepare = prepare_schedule;
3505 frame->check = slf_check_aio_req;
3506}
3507
3508static void
3509coro_aio_req_xs (pTHX_ CV *cv)
3510{
3511 dXSARGS;
3512
3513 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3514
3515 XSRETURN_EMPTY;
3516}
3517
3518/*****************************************************************************/
3519
3520#if CORO_CLONE
3521# include "clone.c"
3522#endif
3523
3524/*****************************************************************************/
3525
2091static SV * 3526static SV *
2092gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3527coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2093{ 3528{
2094 CV *cv = (CV *)NEWSV (0, 0); 3529 SV *coro_sv;
3530 struct coro *coro;
3531 MAGIC *mg;
3532 HV *hv;
3533 SV *cb;
3534 int i;
2095 3535
2096 sv_upgrade ((SV *)cv, SVt_PVCV); 3536 if (argc > 0)
3537 {
3538 cb = s_get_cv_croak (argv [0]);
2097 3539
2098 CvANON_on (cv); 3540 if (!is_coro)
2099 CvISXSUB_on (cv); 3541 {
2100 CvXSUB (cv) = xsub; 3542 if (CvISXSUB (cb))
2101 GENSUB_ARG = arg; 3543 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2102 3544
2103 return newRV_noinc ((SV *)cv); 3545 if (!CvROOT (cb))
2104} 3546 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3547 }
3548 }
2105 3549
2106/*****************************************************************************/ 3550 Newz (0, coro, 1, struct coro);
3551 coro->args = newAV ();
3552 coro->flags = CF_NEW;
3553
3554 if (coro_first) coro_first->prev = coro;
3555 coro->next = coro_first;
3556 coro_first = coro;
3557
3558 coro->hv = hv = newHV ();
3559 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3560 mg->mg_flags |= MGf_DUP;
3561 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3562
3563 if (argc > 0)
3564 {
3565 av_extend (coro->args, argc + is_coro - 1);
3566
3567 if (is_coro)
3568 {
3569 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3570 cb = (SV *)cv_coro_run;
3571 }
3572
3573 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3574
3575 for (i = 1; i < argc; i++)
3576 av_push (coro->args, newSVsv (argv [i]));
3577 }
3578
3579 return coro_sv;
3580}
3581
3582#ifndef __cplusplus
3583ecb_cold XS(boot_Coro__State);
3584#endif
3585
3586#if CORO_JIT
3587
3588static void ecb_noinline ecb_cold
3589pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3590{
3591 dSP;
3592 AV *av = newAV ();
3593
3594 av_store (av, 3, newSVuv (d));
3595 av_store (av, 2, newSVuv (c));
3596 av_store (av, 1, newSVuv (b));
3597 av_store (av, 0, newSVuv (a));
3598
3599 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3600
3601 PUTBACK;
3602}
3603
3604static void ecb_noinline ecb_cold
3605jit_init (pTHX)
3606{
3607 dSP;
3608 SV *load, *save;
3609 char *map_base;
3610 char *load_ptr, *save_ptr;
3611 STRLEN load_len, save_len, map_len;
3612 int count;
3613
3614 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3615
3616 PUSHMARK (SP);
3617 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3618 #include "state.h"
3619 count = call_pv ("Coro::State::_jit", G_ARRAY);
3620 SPAGAIN;
3621
3622 save = POPs; save_ptr = SvPVbyte (save, save_len);
3623 load = POPs; load_ptr = SvPVbyte (load, load_len);
3624
3625 map_len = load_len + save_len + 16;
3626
3627 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3628
3629 if (map_base == (char *)MAP_FAILED)
3630 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3631
3632 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3633
3634 load_perl_slots = (load_save_perl_slots_type)map_base;
3635 memcpy (map_base, load_ptr, load_len);
3636
3637 map_base += (load_len + 15) & ~15;
3638
3639 save_perl_slots = (load_save_perl_slots_type)map_base;
3640 memcpy (map_base, save_ptr, save_len);
3641
3642 /* we are good citizens and try to make the page read-only, so the evil evil */
3643 /* hackers might have it a bit more difficult */
3644 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3645
3646 PUTBACK;
3647 eval_pv ("undef &Coro::State::_jit", 1);
3648}
3649
3650#endif
2107 3651
2108MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3652MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2109 3653
2110PROTOTYPES: DISABLE 3654PROTOTYPES: DISABLE
2111 3655
2112BOOT: 3656BOOT:
2113{ 3657{
3658#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3659#include "state.h"
2114#ifdef USE_ITHREADS 3660#ifdef USE_ITHREADS
2115# if CORO_PTHREAD 3661# if CORO_PTHREAD
2116 coro_thx = PERL_GET_CONTEXT; 3662 coro_thx = PERL_GET_CONTEXT;
2117# endif 3663# endif
2118#endif 3664#endif
2119 BOOT_PAGESIZE; 3665 /* perl defines these to check for existance first, but why it doesn't */
3666 /* just create them one at init time is not clear to me, except for */
3667 /* programs trying to delete them, but... */
3668 /* anyway, we declare this as invalid and make sure they are initialised here */
3669 DEFSV;
3670 ERRSV;
3671
3672 cctx_current = cctx_new_empty ();
2120 3673
2121 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3674 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2122 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3675 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2123 3676
2124 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3677 {
2125 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3678 /*
2126 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3679 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3680 * by coro_sig_vtbl in hash values.
3681 */
3682 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3683
3684 /* this only works if perl doesn't have a vtbl for %SIG */
3685 assert (!mg->mg_virtual);
3686
3687 /*
3688 * The irony is that the perl API itself asserts that mg_virtual
3689 * must be non-const, yet perl5porters insisted on marking their
3690 * vtbls as read-only, just to thwart perl modules from patching
3691 * them.
3692 */
3693 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3694 mg->mg_flags |= MGf_COPY;
3695
3696 coro_sigelem_vtbl = PL_vtbl_sigelem;
3697 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3698 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3699 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3700 }
2127 3701
2128 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2129 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3702 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2130 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3703 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2131 3704
2132 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3705 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3706
3707 newCONSTSUB (coro_state_stash, "BACKEND", newSVpv (CORO_BACKEND, 0)); /* undocumented */
2133 3708
2134 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3709 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2135 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3710 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
2136 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3711 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
2137 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3712 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
2144 3719
2145 { 3720 {
2146 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3721 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2147 3722
2148 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3723 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2149 hv_store_ent (PL_custom_op_names, slf, 3724 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2150 newSVpv ("coro_slf", 0), 0);
2151 3725
2152 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3726 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2153 hv_store_ent (PL_custom_op_descs, slf, 3727 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2154 newSVpv ("coro schedule like function", 0), 0);
2155 } 3728 }
2156 3729
2157 coroapi.ver = CORO_API_VERSION; 3730 coroapi.ver = CORO_API_VERSION;
2158 coroapi.rev = CORO_API_REVISION; 3731 coroapi.rev = CORO_API_REVISION;
2159 3732
… …
2164 coroapi.prepare_nop = prepare_nop; 3737 coroapi.prepare_nop = prepare_nop;
2165 coroapi.prepare_schedule = prepare_schedule; 3738 coroapi.prepare_schedule = prepare_schedule;
2166 coroapi.prepare_cede = prepare_cede; 3739 coroapi.prepare_cede = prepare_cede;
2167 coroapi.prepare_cede_notself = prepare_cede_notself; 3740 coroapi.prepare_cede_notself = prepare_cede_notself;
2168 3741
2169 { 3742 time_init (aTHX);
2170 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2171 3743
2172 if (!svp) croak ("Time::HiRes is required");
2173 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2174
2175 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2176 }
2177
2178 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3744 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3745#if CORO_JIT
3746 PUTBACK;
3747 jit_init (aTHX);
3748 SPAGAIN;
3749#endif
2179} 3750}
2180 3751
2181SV * 3752SV *
2182new (char *klass, ...) 3753new (SV *klass, ...)
3754 ALIAS:
3755 Coro::new = 1
2183 CODE: 3756 CODE:
2184{ 3757 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2185 struct coro *coro; 3758 OUTPUT:
2186 MAGIC *mg;
2187 HV *hv;
2188 int i;
2189
2190 Newz (0, coro, 1, struct coro);
2191 coro->args = newAV ();
2192 coro->flags = CF_NEW;
2193
2194 if (coro_first) coro_first->prev = coro;
2195 coro->next = coro_first;
2196 coro_first = coro;
2197
2198 coro->hv = hv = newHV ();
2199 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2200 mg->mg_flags |= MGf_DUP;
2201 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2202
2203 av_extend (coro->args, items - 1);
2204 for (i = 1; i < items; i++)
2205 av_push (coro->args, newSVsv (ST (i)));
2206}
2207 OUTPUT:
2208 RETVAL 3759 RETVAL
2209
2210void
2211_set_stacklevel (...)
2212 CODE:
2213 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2214 3760
2215void 3761void
2216transfer (...) 3762transfer (...)
2217 PROTOTYPE: $$ 3763 PROTOTYPE: $$
2218 CODE: 3764 CODE:
2219 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3765 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2220 3766
2221bool 3767SV *
2222_destroy (SV *coro_sv) 3768clone (Coro::State coro)
2223 CODE: 3769 CODE:
2224 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3770{
3771#if CORO_CLONE
3772 struct coro *ncoro = coro_clone (aTHX_ coro);
3773 MAGIC *mg;
3774 /* TODO: too much duplication */
3775 ncoro->hv = newHV ();
3776 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3777 mg->mg_flags |= MGf_DUP;
3778 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3779#else
3780 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3781#endif
3782}
2225 OUTPUT: 3783 OUTPUT:
2226 RETVAL 3784 RETVAL
2227
2228void
2229_exit (int code)
2230 PROTOTYPE: $
2231 CODE:
2232 _exit (code);
2233 3785
2234int 3786int
2235cctx_stacksize (int new_stacksize = 0) 3787cctx_stacksize (int new_stacksize = 0)
2236 PROTOTYPE: ;$ 3788 PROTOTYPE: ;$
2237 CODE: 3789 CODE:
… …
2273void 3825void
2274list () 3826list ()
2275 PROTOTYPE: 3827 PROTOTYPE:
2276 PPCODE: 3828 PPCODE:
2277{ 3829{
2278 struct coro *coro; 3830 struct coro *coro;
2279 for (coro = coro_first; coro; coro = coro->next) 3831 for (coro = coro_first; coro; coro = coro->next)
2280 if (coro->hv) 3832 if (coro->hv)
2281 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3833 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2282} 3834}
2283 3835
… …
2285call (Coro::State coro, SV *coderef) 3837call (Coro::State coro, SV *coderef)
2286 ALIAS: 3838 ALIAS:
2287 eval = 1 3839 eval = 1
2288 CODE: 3840 CODE:
2289{ 3841{
3842 struct coro *current = SvSTATE_current;
3843
2290 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3844 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
2291 { 3845 {
2292 struct coro temp; 3846 struct CoroSLF slf_save;
2293 3847
2294 if (!(coro->flags & CF_RUNNING)) 3848 if (current != coro)
2295 { 3849 {
2296 PUTBACK; 3850 PUTBACK;
2297 save_perl (aTHX_ &temp); 3851 save_perl (aTHX_ current);
2298 load_perl (aTHX_ coro); 3852 load_perl (aTHX_ coro);
3853 /* the coro is most likely in an active SLF call.
3854 * while not strictly required (the code we execute is
3855 * not allowed to call any SLF functions), it's cleaner
3856 * to reinitialise the slf_frame and restore it later.
3857 * This might one day allow us to actually do SLF calls
3858 * from code executed here.
3859 */
3860 slf_save = slf_frame;
3861 slf_frame.prepare = 0;
3862 SPAGAIN;
2299 } 3863 }
2300 3864
2301 {
2302 dSP;
2303 ENTER;
2304 SAVETMPS;
2305 PUTBACK;
2306 PUSHSTACK; 3865 PUSHSTACK;
3866
2307 PUSHMARK (SP); 3867 PUSHMARK (SP);
3868 PUTBACK;
2308 3869
2309 if (ix) 3870 if (ix)
2310 eval_sv (coderef, 0); 3871 eval_sv (coderef, 0);
2311 else 3872 else
2312 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3873 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2313 3874
2314 POPSTACK; 3875 POPSTACK;
2315 SPAGAIN; 3876 SPAGAIN;
2316 FREETMPS;
2317 LEAVE;
2318 PUTBACK;
2319 }
2320 3877
2321 if (!(coro->flags & CF_RUNNING)) 3878 if (current != coro)
2322 { 3879 {
3880 PUTBACK;
3881 slf_frame = slf_save;
2323 save_perl (aTHX_ coro); 3882 save_perl (aTHX_ coro);
2324 load_perl (aTHX_ &temp); 3883 load_perl (aTHX_ current);
2325 SPAGAIN; 3884 SPAGAIN;
2326 } 3885 }
2327 } 3886 }
2328} 3887}
2329 3888
… …
2332 PROTOTYPE: $ 3891 PROTOTYPE: $
2333 ALIAS: 3892 ALIAS:
2334 is_ready = CF_READY 3893 is_ready = CF_READY
2335 is_running = CF_RUNNING 3894 is_running = CF_RUNNING
2336 is_new = CF_NEW 3895 is_new = CF_NEW
2337 is_destroyed = CF_DESTROYED 3896 is_destroyed = CF_ZOMBIE
3897 is_zombie = CF_ZOMBIE
3898 is_suspended = CF_SUSPENDED
2338 CODE: 3899 CODE:
2339 RETVAL = boolSV (coro->flags & ix); 3900 RETVAL = boolSV (coro->flags & ix);
2340 OUTPUT: 3901 OUTPUT:
2341 RETVAL 3902 RETVAL
2342 3903
2343void 3904void
2344throw (Coro::State self, SV *throw = &PL_sv_undef) 3905throw (SV *self, SV *exception = &PL_sv_undef)
2345 PROTOTYPE: $;$ 3906 PROTOTYPE: $;$
2346 CODE: 3907 CODE:
3908{
3909 struct coro *coro = SvSTATE (self);
3910 struct coro *current = SvSTATE_current;
3911 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2347 SvREFCNT_dec (self->throw); 3912 SvREFCNT_dec (*exceptionp);
2348 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3913 SvGETMAGIC (exception);
3914 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3915
3916 api_ready (aTHX_ self);
3917}
2349 3918
2350void 3919void
2351api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3920api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2352 PROTOTYPE: $;$ 3921 PROTOTYPE: $;$
2353 C_ARGS: aTHX_ coro, flags 3922 C_ARGS: aTHX_ coro, flags
2354 3923
2355SV * 3924SV *
2356has_cctx (Coro::State coro) 3925has_cctx (Coro::State coro)
2357 PROTOTYPE: $ 3926 PROTOTYPE: $
2358 CODE: 3927 CODE:
2359 RETVAL = boolSV (!!coro->cctx); 3928 /* maybe manage the running flag differently */
3929 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2360 OUTPUT: 3930 OUTPUT:
2361 RETVAL 3931 RETVAL
2362 3932
2363int 3933int
2364is_traced (Coro::State coro) 3934is_traced (Coro::State coro)
… …
2384 3954
2385void 3955void
2386force_cctx () 3956force_cctx ()
2387 PROTOTYPE: 3957 PROTOTYPE:
2388 CODE: 3958 CODE:
2389 SvSTATE_current->cctx->idle_sp = 0; 3959 cctx_current->idle_sp = 0;
2390 3960
2391void 3961void
2392swap_defsv (Coro::State self) 3962swap_defsv (Coro::State self)
2393 PROTOTYPE: $ 3963 PROTOTYPE: $
2394 ALIAS: 3964 ALIAS:
… …
2402 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3972 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2403 3973
2404 SV *tmp = *src; *src = *dst; *dst = tmp; 3974 SV *tmp = *src; *src = *dst; *dst = tmp;
2405 } 3975 }
2406 3976
3977void
3978cancel (Coro::State self)
3979 CODE:
3980 coro_state_destroy (aTHX_ self);
3981
3982SV *
3983enable_times (int enabled = enable_times)
3984 CODE:
3985{
3986 RETVAL = boolSV (enable_times);
3987
3988 if (enabled != enable_times)
3989 {
3990 enable_times = enabled;
3991
3992 coro_times_update ();
3993 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3994 }
3995}
3996 OUTPUT:
3997 RETVAL
3998
3999void
4000times (Coro::State self)
4001 PPCODE:
4002{
4003 struct coro *current = SvSTATE (coro_current);
4004
4005 if (ecb_expect_false (current == self))
4006 {
4007 coro_times_update ();
4008 coro_times_add (SvSTATE (coro_current));
4009 }
4010
4011 EXTEND (SP, 2);
4012 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
4013 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
4014
4015 if (ecb_expect_false (current == self))
4016 coro_times_sub (SvSTATE (coro_current));
4017}
4018
4019void
4020swap_sv (Coro::State coro, SV *sva, SV *svb)
4021 CODE:
4022{
4023 struct coro *current = SvSTATE_current;
4024 AV *swap_sv;
4025 int i;
4026
4027 sva = SvRV (sva);
4028 svb = SvRV (svb);
4029
4030 if (current == coro)
4031 SWAP_SVS_LEAVE (current);
4032
4033 if (!coro->swap_sv)
4034 coro->swap_sv = newAV ();
4035
4036 swap_sv = coro->swap_sv;
4037
4038 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4039 {
4040 SV *a = AvARRAY (swap_sv)[i ];
4041 SV *b = AvARRAY (swap_sv)[i + 1];
4042
4043 if (a == sva && b == svb)
4044 {
4045 SvREFCNT_dec_NN (a);
4046 SvREFCNT_dec_NN (b);
4047
4048 for (; i <= AvFILLp (swap_sv) - 2; i++)
4049 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4050
4051 AvFILLp (swap_sv) -= 2;
4052
4053 goto removed;
4054 }
4055 }
4056
4057 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4058 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4059
4060 removed:
4061
4062 if (current == coro)
4063 SWAP_SVS_ENTER (current);
4064}
4065
4066
2407MODULE = Coro::State PACKAGE = Coro 4067MODULE = Coro::State PACKAGE = Coro
2408 4068
2409BOOT: 4069BOOT:
2410{ 4070{
2411 int i; 4071 if (SVt_LAST > 32)
4072 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2412 4073
2413 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2414 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4074 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2415 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4075 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2416 4076 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2417 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4077 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2418 SvREADONLY_on (coro_current); 4078 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4079 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4080 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4081 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4082
4083 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4084 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4085 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4086 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2419 4087
2420 coro_stash = gv_stashpv ("Coro", TRUE); 4088 coro_stash = gv_stashpv ("Coro", TRUE);
2421 4089
2422 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4090 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2423 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4091 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2424 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4092 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2425 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4093 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2426 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4094 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2427 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4095 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2428
2429 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2430 coro_ready[i] = newAV ();
2431 4096
2432 { 4097 {
2433 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4098 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2434 4099
2435 coroapi.schedule = api_schedule; 4100 coroapi.schedule = api_schedule;
4101 coroapi.schedule_to = api_schedule_to;
2436 coroapi.cede = api_cede; 4102 coroapi.cede = api_cede;
2437 coroapi.cede_notself = api_cede_notself; 4103 coroapi.cede_notself = api_cede_notself;
2438 coroapi.ready = api_ready; 4104 coroapi.ready = api_ready;
2439 coroapi.is_ready = api_is_ready; 4105 coroapi.is_ready = api_is_ready;
2440 coroapi.nready = coro_nready; 4106 coroapi.nready = coro_nready;
2441 coroapi.current = coro_current; 4107 coroapi.current = coro_current;
2442 4108
4109 coroapi.enterleave_hook = api_enterleave_hook;
4110 coroapi.enterleave_unhook = api_enterleave_unhook;
4111 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4112
2443 GCoroAPI = &coroapi; 4113 /*GCoroAPI = &coroapi;*/
2444 sv_setiv (sv, (IV)&coroapi); 4114 sv_setiv (sv, PTR2IV (&coroapi));
2445 SvREADONLY_on (sv); 4115 SvREADONLY_on (sv);
2446 } 4116 }
2447} 4117}
4118
4119SV *
4120async (...)
4121 PROTOTYPE: &@
4122 CODE:
4123 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4124 api_ready (aTHX_ RETVAL);
4125 OUTPUT:
4126 RETVAL
4127
4128void
4129_destroy (Coro::State coro)
4130 CODE:
4131 /* used by the manager thread */
4132 coro_state_destroy (aTHX_ coro);
4133
4134void
4135on_destroy (Coro::State coro, SV *cb)
4136 CODE:
4137 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4138
4139void
4140join (...)
4141 CODE:
4142 CORO_EXECUTE_SLF_XS (slf_init_join);
4143
4144void
4145terminate (...)
4146 CODE:
4147 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4148
4149void
4150cancel (...)
4151 CODE:
4152 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4153
4154int
4155safe_cancel (Coro::State self, ...)
4156 C_ARGS: aTHX_ self, &ST (1), items - 1
2448 4157
2449void 4158void
2450schedule (...) 4159schedule (...)
2451 CODE: 4160 CODE:
2452 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 4161 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4162
4163void
4164schedule_to (...)
4165 CODE:
4166 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4167
4168void
4169cede_to (...)
4170 CODE:
4171 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2453 4172
2454void 4173void
2455cede (...) 4174cede (...)
2456 CODE: 4175 CODE:
2457 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 4176 CORO_EXECUTE_SLF_XS (slf_init_cede);
2458 4177
2459void 4178void
2460cede_notself (...) 4179cede_notself (...)
2461 CODE: 4180 CODE:
2462 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 4181 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2463 4182
2464void 4183void
2465_set_current (SV *current) 4184_set_current (SV *current)
2466 PROTOTYPE: $ 4185 PROTOTYPE: $
2467 CODE: 4186 CODE:
2468 SvREFCNT_dec (SvRV (coro_current)); 4187 SvREFCNT_dec_NN (SvRV (coro_current));
2469 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4188 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2470 4189
2471void 4190void
2472_set_readyhook (SV *hook) 4191_set_readyhook (SV *hook)
2473 PROTOTYPE: $ 4192 PROTOTYPE: $
2474 CODE: 4193 CODE:
2475 SvREFCNT_dec (coro_readyhook); 4194 SvREFCNT_dec (coro_readyhook);
4195 SvGETMAGIC (hook);
4196 if (SvOK (hook))
4197 {
2476 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4198 coro_readyhook = newSVsv (hook);
4199 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4200 }
4201 else
4202 {
4203 coro_readyhook = 0;
4204 CORO_READYHOOK = 0;
4205 }
2477 4206
2478int 4207int
2479prio (Coro::State coro, int newprio = 0) 4208prio (Coro::State coro, int newprio = 0)
2480 PROTOTYPE: $;$ 4209 PROTOTYPE: $;$
2481 ALIAS: 4210 ALIAS:
… …
2487 if (items > 1) 4216 if (items > 1)
2488 { 4217 {
2489 if (ix) 4218 if (ix)
2490 newprio = coro->prio - newprio; 4219 newprio = coro->prio - newprio;
2491 4220
2492 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4221 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2493 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4222 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2494 4223
2495 coro->prio = newprio; 4224 coro->prio = newprio;
2496 } 4225 }
2497} 4226}
2498 OUTPUT: 4227 OUTPUT:
… …
2512 CODE: 4241 CODE:
2513 RETVAL = coro_nready; 4242 RETVAL = coro_nready;
2514 OUTPUT: 4243 OUTPUT:
2515 RETVAL 4244 RETVAL
2516 4245
2517# for async_pool speedup
2518void 4246void
2519_pool_1 (SV *cb) 4247suspend (Coro::State self)
4248 PROTOTYPE: $
2520 CODE: 4249 CODE:
2521{ 4250 self->flags |= CF_SUSPENDED;
2522 HV *hv = (HV *)SvRV (coro_current);
2523 struct coro *coro = SvSTATE_hv ((SV *)hv);
2524 AV *defav = GvAV (PL_defgv);
2525 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2526 AV *invoke_av;
2527 int i, len;
2528 4251
2529 if (!invoke) 4252void
4253resume (Coro::State self)
4254 PROTOTYPE: $
4255 CODE:
4256 self->flags &= ~CF_SUSPENDED;
4257
4258void
4259_pool_handler (...)
4260 CODE:
4261 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4262
4263void
4264async_pool (SV *cv, ...)
4265 PROTOTYPE: &@
4266 PPCODE:
4267{
4268 HV *hv = (HV *)av_pop (av_async_pool);
4269 AV *av = newAV ();
4270 SV *cb = ST (0);
4271 int i;
4272
4273 av_extend (av, items - 2);
4274 for (i = 1; i < items; ++i)
4275 av_push (av, SvREFCNT_inc_NN (ST (i)));
4276
4277 if ((SV *)hv == &PL_sv_undef)
2530 { 4278 {
2531 SV *old = PL_diehook; 4279 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2532 PL_diehook = 0; 4280 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2533 SvREFCNT_dec (old); 4281 SvREFCNT_dec_NN (sv);
2534 croak ("\3async_pool terminate\2\n");
2535 } 4282 }
2536 4283
2537 SvREFCNT_dec (coro->saved_deffh);
2538 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2539
2540 hv_store (hv, "desc", sizeof ("desc") - 1,
2541 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2542
2543 invoke_av = (AV *)SvRV (invoke);
2544 len = av_len (invoke_av);
2545
2546 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2547
2548 if (len > 0)
2549 { 4284 {
2550 av_fill (defav, len - 1); 4285 struct coro *coro = SvSTATE_hv (hv);
2551 for (i = 0; i < len; ++i) 4286
2552 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4287 assert (!coro->invoke_cb);
4288 assert (!coro->invoke_av);
4289 coro->invoke_cb = SvREFCNT_inc (cb);
4290 coro->invoke_av = av;
2553 } 4291 }
4292
4293 api_ready (aTHX_ (SV *)hv);
4294
4295 if (GIMME_V != G_VOID)
4296 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4297 else
4298 SvREFCNT_dec_NN (hv);
2554} 4299}
4300
4301SV *
4302rouse_cb ()
4303 PROTOTYPE:
4304 CODE:
4305 RETVAL = coro_new_rouse_cb (aTHX);
4306 OUTPUT:
4307 RETVAL
2555 4308
2556void 4309void
2557_pool_2 (SV *cb) 4310rouse_wait (...)
4311 PROTOTYPE: ;$
4312 PPCODE:
4313 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4314
4315void
4316on_enter (SV *block)
4317 ALIAS:
4318 on_leave = 1
4319 PROTOTYPE: &
2558 CODE: 4320 CODE:
2559{ 4321{
2560 struct coro *coro = SvSTATE_current; 4322 struct coro *coro = SvSTATE_current;
4323 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2561 4324
2562 sv_setsv (cb, &PL_sv_undef); 4325 block = s_get_cv_croak (block);
2563 4326
2564 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4327 if (!*avp)
2565 coro->saved_deffh = 0;
2566
2567 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2568 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2569 {
2570 SV *old = PL_diehook;
2571 PL_diehook = 0;
2572 SvREFCNT_dec (old);
2573 croak ("\3async_pool terminate\2\n");
2574 }
2575
2576 av_clear (GvAV (PL_defgv));
2577 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2578 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2579
2580 coro->prio = 0;
2581
2582 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2583 api_trace (aTHX_ coro_current, 0);
2584
2585 av_push (av_async_pool, newSVsv (coro_current));
2586}
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void
2592_get_state (SV *self)
2593 PROTOTYPE: $
2594 PPCODE:
2595{
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV (); 4328 *avp = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603 4329
2604 data->errorno = errno; 4330 av_push (*avp, SvREFCNT_inc (block));
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608 4331
2609 av_extend (av, AvFILLp (defav) + 1 + 1); 4332 if (!ix)
4333 on_enterleave_call (aTHX_ block);
2610 4334
2611 for (i = 0; i <= AvFILLp (defav); ++i) 4335 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4336 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2613 4337 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620
2621void
2622_set_state (SV *state)
2623 PROTOTYPE: $
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646void
2647_schedule (...)
2648 CODE:
2649{
2650 static int incede;
2651
2652 api_cede_notself (aTHX);
2653
2654 ++incede;
2655 while (coro_nready >= incede && api_cede (aTHX))
2656 ;
2657
2658 sv_setsv (sv_activity, &PL_sv_undef);
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666
2667 --incede;
2668} 4338}
2669 4339
2670 4340
2671MODULE = Coro::State PACKAGE = PerlIO::cede 4341MODULE = Coro::State PACKAGE = PerlIO::cede
2672 4342
2673BOOT: 4343BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4344 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 4345
4346
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 4347MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 4348
2678SV * 4349SV *
2679new (SV *klass, SV *count_ = 0) 4350new (SV *klass, SV *count = 0)
2680 CODE: 4351 CODE:
2681{ 4352{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4353 int semcnt = 1;
2683 AV *av = newAV (); 4354
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4355 if (count)
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4356 {
4357 SvGETMAGIC (count);
4358
4359 if (SvOK (count))
4360 semcnt = SvIV (count);
4361 }
4362
4363 RETVAL = sv_bless (
4364 coro_waitarray_new (aTHX_ semcnt),
4365 GvSTASH (CvGV (cv))
4366 );
2686} 4367}
4368 OUTPUT:
4369 RETVAL
4370
4371# helper for Coro::Channel and others
4372SV *
4373_alloc (int count)
4374 CODE:
4375 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 4376 OUTPUT:
2688 RETVAL 4377 RETVAL
2689 4378
2690SV * 4379SV *
2691count (SV *self) 4380count (SV *self)
… …
2693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4382 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2694 OUTPUT: 4383 OUTPUT:
2695 RETVAL 4384 RETVAL
2696 4385
2697void 4386void
2698up (SV *self, int adjust = 1) 4387up (SV *self)
2699 ALIAS:
2700 adjust = 1
2701 CODE: 4388 CODE:
2702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4389 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2703 4390
2704void 4391void
2705down (SV *self) 4392adjust (SV *self, int adjust)
2706 CODE: 4393 CODE:
2707 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4394 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4395
4396void
4397down (...)
4398 CODE:
4399 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4400
4401void
4402wait (...)
4403 CODE:
4404 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2708 4405
2709void 4406void
2710try (SV *self) 4407try (SV *self)
2711 PPCODE: 4408 PPCODE:
2712{ 4409{
… …
2724 XSRETURN_NO; 4421 XSRETURN_NO;
2725} 4422}
2726 4423
2727void 4424void
2728waiters (SV *self) 4425waiters (SV *self)
2729 CODE: 4426 PPCODE:
2730{ 4427{
2731 AV *av = (AV *)SvRV (self); 4428 AV *av = (AV *)SvRV (self);
4429 int wcount = AvFILLp (av) + 1 - 1;
2732 4430
2733 if (GIMME_V == G_SCALAR) 4431 if (GIMME_V == G_SCALAR)
2734 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4432 XPUSHs (sv_2mortal (newSViv (wcount)));
2735 else 4433 else
2736 { 4434 {
2737 int i; 4435 int i;
2738 EXTEND (SP, AvFILLp (av) + 1 - 1); 4436 EXTEND (SP, wcount);
2739 for (i = 1; i <= AvFILLp (av); ++i) 4437 for (i = 1; i <= wcount; ++i)
2740 PUSHs (newSVsv (AvARRAY (av)[i])); 4438 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2741 } 4439 }
2742} 4440}
2743 4441
4442MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4443
4444void
4445_may_delete (SV *sem, int count, unsigned int extra_refs)
4446 PPCODE:
4447{
4448 AV *av = (AV *)SvRV (sem);
4449
4450 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4451 && AvFILLp (av) == 0 /* no waiters, just count */
4452 && SvIV (AvARRAY (av)[0]) == count)
4453 XSRETURN_YES;
4454
4455 XSRETURN_NO;
4456}
4457
4458MODULE = Coro::State PACKAGE = Coro::Signal
4459
4460SV *
4461new (SV *klass)
4462 CODE:
4463 RETVAL = sv_bless (
4464 coro_waitarray_new (aTHX_ 0),
4465 GvSTASH (CvGV (cv))
4466 );
4467 OUTPUT:
4468 RETVAL
4469
4470void
4471wait (...)
4472 CODE:
4473 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4474
4475void
4476broadcast (SV *self)
4477 CODE:
4478{
4479 AV *av = (AV *)SvRV (self);
4480 coro_signal_wake (aTHX_ av, AvFILLp (av));
4481}
4482
4483void
4484send (SV *self)
4485 CODE:
4486{
4487 AV *av = (AV *)SvRV (self);
4488
4489 if (AvFILLp (av))
4490 coro_signal_wake (aTHX_ av, 1);
4491 else
4492 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4493}
4494
4495IV
4496awaited (SV *self)
4497 CODE:
4498 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4499 OUTPUT:
4500 RETVAL
4501
4502
4503MODULE = Coro::State PACKAGE = Coro::AnyEvent
4504
4505BOOT:
4506 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4507
4508void
4509_schedule (...)
4510 CODE:
4511{
4512 static int incede;
4513
4514 api_cede_notself (aTHX);
4515
4516 ++incede;
4517 while (coro_nready >= incede && api_cede (aTHX))
4518 ;
4519
4520 sv_setsv (sv_activity, &PL_sv_undef);
4521 if (coro_nready >= incede)
4522 {
4523 PUSHMARK (SP);
4524 PUTBACK;
4525 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4526 }
4527
4528 --incede;
4529}
4530
4531
4532MODULE = Coro::State PACKAGE = Coro::AIO
4533
4534void
4535_register (char *target, char *proto, SV *req)
4536 CODE:
4537{
4538 SV *req_cv = s_get_cv_croak (req);
4539 /* newXSproto doesn't return the CV on 5.8 */
4540 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4541 sv_setpv ((SV *)slf_cv, proto);
4542 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4543}
4544
4545MODULE = Coro::State PACKAGE = Coro::Select
4546
4547void
4548patch_pp_sselect ()
4549 CODE:
4550 if (!coro_old_pp_sselect)
4551 {
4552 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4553 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4554 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4555 }
4556
4557void
4558unpatch_pp_sselect ()
4559 CODE:
4560 if (coro_old_pp_sselect)
4561 {
4562 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4563 coro_old_pp_sselect = 0;
4564 }
4565
4566MODULE = Coro::State PACKAGE = Coro::Util
4567
4568void
4569_exit (int code)
4570 CODE:
4571 _exit (code);
4572
4573NV
4574time ()
4575 CODE:
4576 RETVAL = nvtime (aTHX);
4577 OUTPUT:
4578 RETVAL
4579
4580NV
4581gettimeofday ()
4582 PPCODE:
4583{
4584 UV tv [2];
4585 u2time (aTHX_ tv);
4586 EXTEND (SP, 2);
4587 PUSHs (sv_2mortal (newSVuv (tv [0])));
4588 PUSHs (sv_2mortal (newSVuv (tv [1])));
4589}
4590

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