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Comparing Coro/Coro/State.xs (file contents):
Revision 1.287 by root, Mon Nov 17 07:03:12 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
131#ifdef __linux
132# include <time.h> /* for timespec */
133# include <syscall.h> /* for SYS_* */
134# ifdef SYS_clock_gettime
135# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
136# define CORO_CLOCK_MONOTONIC 1
137# define CORO_CLOCK_THREAD_CPUTIME_ID 3
138# endif
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
158
152static 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);
153 166
154static U32 cctx_gen; 167static U32 cctx_gen;
155static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
156static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
157static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
158static JMPENV *main_top_env; 171static JMPENV *main_top_env;
159static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
160static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
161 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177static SV *sv_idle; /* $Coro::idle */
178
162static GV *irsgv; /* $/ */ 179static GV *irsgv; /* $/ */
163static GV *stdoutgv; /* *STDOUT */ 180static GV *stdoutgv; /* *STDOUT */
164static SV *rv_diehook; 181static SV *rv_diehook;
165static SV *rv_warnhook; 182static SV *rv_warnhook;
166static HV *hv_sig; /* %SIG */
167 183
168/* async_pool helper stuff */ 184/* async_pool helper stuff */
169static SV *sv_pool_rss; 185static SV *sv_pool_rss;
170static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
171static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
172 191
173/* Coro::AnyEvent */ 192/* Coro::AnyEvent */
174static SV *sv_activity; 193static SV *sv_activity;
175 194
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
176static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
177static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
178 203
179enum { 204enum
205{
180 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
181 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
182 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
183 CC_TRACE_SUB = 0x08, /* trace sub calls */ 209 CC_TRACE_SUB = 0x08, /* trace sub calls */
184 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
189typedef struct coro_cctx 215typedef struct coro_cctx
190{ 216{
191 struct coro_cctx *next; 217 struct coro_cctx *next;
192 218
193 /* the stack */ 219 /* the stack */
194 void *sptr; 220 struct coro_stack stack;
195 size_t ssize;
196 221
197 /* cpu state */ 222 /* cpu state */
198 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
199 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
200 JMPENV *top_env; 227 JMPENV *top_env;
201 coro_context cctx; 228 coro_context cctx;
202 229
203 U32 gen; 230 U32 gen;
204#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
205 int valgrind_id; 232 int valgrind_id;
206#endif 233#endif
207 unsigned char flags; 234 unsigned char flags;
208} coro_cctx; 235} coro_cctx;
209 236
237static coro_cctx *cctx_current; /* the currently running cctx */
238
239/*****************************************************************************/
240
241static MGVTBL coro_state_vtbl;
242
210enum { 243enum
244{
211 CF_RUNNING = 0x0001, /* coroutine is running */ 245 CF_RUNNING = 0x0001, /* coroutine is running */
212 CF_READY = 0x0002, /* coroutine is ready */ 246 CF_READY = 0x0002, /* coroutine is ready */
213 CF_NEW = 0x0004, /* has never been switched to */ 247 CF_NEW = 0x0004, /* has never been switched to */
214 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) */
215}; 251};
216 252
217/* 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 */
218typedef struct 254typedef struct
219{ 255{
220 SV *defsv;
221 AV *defav;
222 SV *errsv;
223 SV *irsgv;
224#define VAR(name,type) type name; 256 #define VARx(name,expr,type) type name;
225# include "state.h" 257 #include "state.h"
226#undef VAR
227} perl_slots; 258} perl_slots;
228 259
260/* how many context stack entries do we need for perl_slots */
229#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))
230 262
231/* this is a structure representing a perl-level coroutine */ 263/* this is a structure representing a perl-level coroutine */
232struct coro { 264struct coro
265{
233 /* the C coroutine allocated to this perl coroutine, if any */ 266 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 267 coro_cctx *cctx;
268
269 /* ready queue */
270 struct coro *next_ready;
235 271
236 /* state data */ 272 /* state data */
237 struct CoroSLF slf_frame; /* saved slf frame */ 273 struct CoroSLF slf_frame; /* saved slf frame */
238 AV *mainstack; 274 AV *mainstack;
239 perl_slots *slot; /* basically the saved sp */ 275 perl_slots *slot; /* basically the saved sp */
240 276
277 CV *startcv; /* the CV to execute */
241 AV *args; /* data associated with this coroutine (initial args) */ 278 AV *args; /* data associated with this coroutine (initial args) */
242 int refcnt; /* coroutines are refcounted, yes */
243 int flags; /* CF_ flags */ 279 int flags; /* CF_ flags */
244 HV *hv; /* the perl hash associated with this coro, if any */ 280 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro);
246 281
247 /* statistics */ 282 /* statistics */
248 int usecount; /* number of transfers to this coro */ 283 int usecount; /* number of transfers to this coro */
249 284
250 /* coro process data */ 285 /* coro process data */
251 int prio; 286 int prio;
252 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 */
253 291
254 /* async_pool */ 292 /* async_pool */
255 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;
256 306
257 /* linked list */ 307 /* linked list */
258 struct coro *next, *prev; 308 struct coro *next, *prev;
259}; 309};
260 310
261typedef struct coro *Coro__State; 311typedef struct coro *Coro__State;
262typedef struct coro *Coro__State_or_hashref; 312typedef struct coro *Coro__State_or_hashref;
263 313
264/* the following variables are effectively part of the perl context */ 314/* the following variables are effectively part of the perl context */
265/* and get copied between struct coro and these variables */ 315/* and get copied between struct coro and these variables */
266/* the mainr easonw e don't support windows process emulation */ 316/* the main reason we don't support windows process emulation */
267static struct CoroSLF slf_frame; /* the current slf frame */ 317static struct CoroSLF slf_frame; /* the current slf frame */
268static SV *coro_throw;
269 318
270/** Coro ********************************************************************/ 319/** Coro ********************************************************************/
271 320
272#define PRIO_MAX 3 321#define CORO_PRIO_MAX 3
273#define PRIO_HIGH 1 322#define CORO_PRIO_HIGH 1
274#define PRIO_NORMAL 0 323#define CORO_PRIO_NORMAL 0
275#define PRIO_LOW -1 324#define CORO_PRIO_LOW -1
276#define PRIO_IDLE -3 325#define CORO_PRIO_IDLE -3
277#define PRIO_MIN -4 326#define CORO_PRIO_MIN -4
278 327
279/* for Coro.pm */ 328/* for Coro.pm */
280static SV *coro_current; 329static SV *coro_current;
281static SV *coro_readyhook; 330static SV *coro_readyhook;
282static 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;
283static struct coro *coro_first; 333static struct coro *coro_first;
284#define coro_nready coroapi.nready 334#define coro_nready coroapi.nready
285 335
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
286/** lowlevel stuff **********************************************************/ 431/** lowlevel stuff **********************************************************/
287 432
288static SV * 433static SV * ecb_noinline
289coro_get_sv (pTHX_ const char *name, int create) 434coro_get_sv (pTHX_ const char *name, int create)
290{ 435{
291#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
292 /* 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 */
293 get_sv (name, create); 438 get_sv (name, create);
294#endif 439#endif
295 return get_sv (name, create); 440 return get_sv (name, create);
296} 441}
297 442
298static AV * 443static AV * ecb_noinline
299coro_get_av (pTHX_ const char *name, int create) 444coro_get_av (pTHX_ const char *name, int create)
300{ 445{
301#if PERL_VERSION_ATLEAST (5,10,0) 446#if PERL_VERSION_ATLEAST (5,10,0)
302 /* 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 */
303 get_av (name, create); 448 get_av (name, create);
304#endif 449#endif
305 return get_av (name, create); 450 return get_av (name, create);
306} 451}
307 452
308static HV * 453static HV * ecb_noinline
309coro_get_hv (pTHX_ const char *name, int create) 454coro_get_hv (pTHX_ const char *name, int create)
310{ 455{
311#if PERL_VERSION_ATLEAST (5,10,0) 456#if PERL_VERSION_ATLEAST (5,10,0)
312 /* 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 */
313 get_hv (name, create); 458 get_hv (name, create);
314#endif 459#endif
315 return get_hv (name, create); 460 return get_hv (name, create);
316} 461}
317 462
318static 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 *
319coro_clone_padlist (pTHX_ CV *cv) 569coro_derive_padlist (pTHX_ CV *cv)
320{ 570{
321 AV *padlist = CvPADLIST (cv); 571 PADLIST *padlist = CvPADLIST (cv);
322 AV *newpadlist, *newpad; 572 PADLIST *newpadlist;
573 PADNAMELIST *padnames;
574 PAD *newpad;
575 PADOFFSET off = PadlistMAX (padlist) + 1;
323 576
324 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. */
325 AvREAL_off (newpadlist); 605 AvREAL_off (newpadlist);
326#if PERL_VERSION_ATLEAST (5,10,0)
327 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
328#else
329 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
330#endif 606#endif
331 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
332 --AvFILLp (padlist);
333 607
334 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 608 /* Already extended to 2 elements by newPADLIST. */
335 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;
336 616
337 return newpadlist; 617 return newpadlist;
338} 618}
339 619
340static void 620ecb_inline void
341free_padlist (pTHX_ AV *padlist) 621free_padlist (pTHX_ PADLIST *padlist)
342{ 622{
343 /* may be during global destruction */ 623 /* may be during global destruction */
344 if (SvREFCNT (padlist)) 624 if (!IN_DESTRUCT)
345 { 625 {
346 I32 i = AvFILLp (padlist); 626 I32 i = PadlistMAX (padlist);
347 while (i >= 0) 627
628 while (i > 0) /* special-case index 0 */
348 { 629 {
349 SV **svp = av_fetch (padlist, i--, FALSE); 630 /* we try to be extra-careful here */
631 PAD *pad = PadlistARRAY (padlist)[i--];
632
350 if (svp) 633 if (pad)
351 { 634 {
352 SV *sv; 635 I32 j = PadMAX (pad);
353 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 636
637 while (j >= 0)
354 SvREFCNT_dec (sv); 638 SvREFCNT_dec (PadARRAY (pad)[j--]);
355 639
640 PadMAX (pad) = -1;
356 SvREFCNT_dec (*svp); 641 SvREFCNT_dec (pad);
357 } 642 }
358 } 643 }
359 644
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);
360 SvREFCNT_dec ((SV*)padlist); 653 SvREFCNT_dec ((SV*)padlist);
654#endif
361 } 655 }
362} 656}
363 657
364static int 658static int
365coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 659coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
366{ 660{
367 AV *padlist; 661 PADLIST *padlist;
368 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;
369 664
370 /* casting is fun. */ 665 /* perl manages to free our internal AV and _then_ call us */
371 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 666 if (IN_DESTRUCT)
667 return 0;
668
669 while (len--)
372 free_padlist (aTHX_ padlist); 670 free_padlist (aTHX_ padlists[len]);
373
374 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
375 671
376 return 0; 672 return 0;
377} 673}
378
379#define CORO_MAGIC_type_cv 26
380#define CORO_MAGIC_type_state PERL_MAGIC_ext
381 674
382static MGVTBL coro_cv_vtbl = { 675static MGVTBL coro_cv_vtbl = {
383 0, 0, 0, 0, 676 0, 0, 0, 0,
384 coro_cv_free 677 coro_cv_free
385}; 678};
386 679
387#define CORO_MAGIC_NN(sv, type) \
388 (expect_true (SvMAGIC (sv)->mg_type == type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type))
391
392#define CORO_MAGIC(sv, type) \
393 (expect_true (SvMAGIC (sv)) \
394 ? CORO_MAGIC_NN (sv, type) \
395 : 0)
396
397#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
398#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
399
400INLINE struct coro *
401SvSTATE_ (pTHX_ SV *coro)
402{
403 HV *stash;
404 MAGIC *mg;
405
406 if (SvROK (coro))
407 coro = SvRV (coro);
408
409 if (expect_false (SvTYPE (coro) != SVt_PVHV))
410 croak ("Coro::State object required");
411
412 stash = SvSTASH (coro);
413 if (expect_false (stash != coro_stash && stash != coro_state_stash))
414 {
415 /* very slow, but rare, check */
416 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
417 croak ("Coro::State object required");
418 }
419
420 mg = CORO_MAGIC_state (coro);
421 return (struct coro *)mg->mg_ptr;
422}
423
424#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
425
426/* faster than SvSTATE, but expects a coroutine hv */
427#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
428#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
429
430/* the next two functions merely cache the padlists */ 680/* the next two functions merely cache the padlists */
431static void 681ecb_inline void
432get_padlist (pTHX_ CV *cv) 682get_padlist (pTHX_ CV *cv)
433{ 683{
434 MAGIC *mg = CORO_MAGIC_cv (cv); 684 MAGIC *mg = CORO_MAGIC_cv (cv);
435 AV *av; 685 size_t *lenp;
436 686
437 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 687 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
438 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 688 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
439 else 689 else
440 { 690 {
441#if CORO_PREFER_PERL_FUNCTIONS 691#if CORO_PREFER_PERL_FUNCTIONS
442 /* this is probably cleaner? but also slower! */ 692 /* this is probably cleaner? but also slower! */
443 /* in practise, it seems to be less stable */ 693 /* in practise, it seems to be less stable */
444 CV *cp = Perl_cv_clone (cv); 694 CV *cp = Perl_cv_clone (aTHX_ cv);
445 CvPADLIST (cv) = CvPADLIST (cp); 695 CvPADLIST (cv) = CvPADLIST (cp);
446 CvPADLIST (cp) = 0; 696 CvPADLIST (cp) = 0;
447 SvREFCNT_dec (cp); 697 SvREFCNT_dec (cp);
448#else 698#else
449 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 699 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
450#endif 700#endif
451 } 701 }
452} 702}
453 703
454static void 704ecb_inline void
455put_padlist (pTHX_ CV *cv) 705put_padlist (pTHX_ CV *cv)
456{ 706{
457 MAGIC *mg = CORO_MAGIC_cv (cv); 707 MAGIC *mg = CORO_MAGIC_cv (cv);
458 AV *av;
459 708
460 if (expect_false (!mg)) 709 if (ecb_expect_false (!mg))
710 {
461 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);
462 719
463 av = (AV *)mg->mg_obj; 720 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
464
465 if (expect_false (AvFILLp (av) >= AvMAX (av)))
466 av_extend (av, AvMAX (av) + 1);
467
468 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
469} 721}
470 722
471/** 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);
472 796
473static void 797static void
474load_perl (pTHX_ Coro__State c) 798load_perl (pTHX_ Coro__State c)
475{ 799{
476 perl_slots *slot = c->slot; 800 perl_slots *slot = c->slot;
477 c->slot = 0; 801 c->slot = 0;
478 802
479 PL_mainstack = c->mainstack; 803 PL_mainstack = c->mainstack;
480 804
481 GvSV (PL_defgv) = slot->defsv; 805#if CORO_JIT
482 GvAV (PL_defgv) = slot->defav; 806 load_perl_slots (slot);
483 GvSV (PL_errgv) = slot->errsv; 807#else
484 GvSV (irsgv) = slot->irsgv;
485
486 #define VAR(name,type) PL_ ## name = slot->name; 808 #define VARx(name,expr,type) expr = slot->name;
487 # include "state.h" 809 #include "state.h"
488 #undef VAR 810#endif
489 811
490 { 812 {
491 dSP; 813 dSP;
492 814
493 CV *cv; 815 CV *cv;
494 816
495 /* now do the ugly restore mess */ 817 /* now do the ugly restore mess */
496 while (expect_true (cv = (CV *)POPs)) 818 while (ecb_expect_true (cv = (CV *)POPs))
497 { 819 {
498 put_padlist (aTHX_ cv); /* mark this padlist as available */ 820 put_padlist (aTHX_ cv); /* mark this padlist as available */
499 CvDEPTH (cv) = PTR2IV (POPs); 821 CvDEPTH (cv) = PTR2IV (POPs);
500 CvPADLIST (cv) = (AV *)POPs; 822 CvPADLIST (cv) = (PADLIST *)POPs;
501 } 823 }
502 824
503 PUTBACK; 825 PUTBACK;
504 } 826 }
505 827
506 slf_frame = c->slf_frame; 828 slf_frame = c->slf_frame;
507 coro_throw = c->throw; 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);
508} 856}
509 857
510static void 858static void
511save_perl (pTHX_ Coro__State c) 859save_perl (pTHX_ Coro__State c)
512{ 860{
513 c->throw = coro_throw; 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;
514 c->slf_frame = slf_frame; 888 c->slf_frame = slf_frame;
515 889
516 { 890 {
517 dSP; 891 dSP;
518 I32 cxix = cxstack_ix; 892 I32 cxix = cxstack_ix;
… …
526 900
527 XPUSHs (Nullsv); 901 XPUSHs (Nullsv);
528 /* this loop was inspired by pp_caller */ 902 /* this loop was inspired by pp_caller */
529 for (;;) 903 for (;;)
530 { 904 {
531 while (expect_true (cxix >= 0)) 905 while (ecb_expect_true (cxix >= 0))
532 { 906 {
533 PERL_CONTEXT *cx = &ccstk[cxix--]; 907 PERL_CONTEXT *cx = &ccstk[cxix--];
534 908
535 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))
536 { 910 {
537 CV *cv = cx->blk_sub.cv; 911 CV *cv = cx->blk_sub.cv;
538 912
539 if (expect_true (CvDEPTH (cv))) 913 if (ecb_expect_true (CvDEPTH (cv)))
540 { 914 {
541 EXTEND (SP, 3); 915 EXTEND (SP, 3);
542 PUSHs ((SV *)CvPADLIST (cv)); 916 PUSHs ((SV *)CvPADLIST (cv));
543 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 917 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
544 PUSHs ((SV *)cv); 918 PUSHs ((SV *)cv);
… …
547 get_padlist (aTHX_ cv); 921 get_padlist (aTHX_ cv);
548 } 922 }
549 } 923 }
550 } 924 }
551 925
552 if (expect_true (top_si->si_type == PERLSI_MAIN)) 926 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
553 break; 927 break;
554 928
555 top_si = top_si->si_prev; 929 top_si = top_si->si_prev;
556 ccstk = top_si->si_cxstack; 930 ccstk = top_si->si_cxstack;
557 cxix = top_si->si_cxix; 931 cxix = top_si->si_cxix;
… …
559 933
560 PUTBACK; 934 PUTBACK;
561 } 935 }
562 936
563 /* allocate some space on the context stack for our purposes */ 937 /* allocate some space on the context stack for our purposes */
564 /* we manually unroll here, as usually 2 slots is enough */ 938 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
565 if (SLOT_COUNT >= 1) CXINC;
566 if (SLOT_COUNT >= 2) CXINC;
567 if (SLOT_COUNT >= 3) CXINC;
568 { 939 {
569 int i; 940 unsigned int i;
941
570 for (i = 3; i < SLOT_COUNT; ++i) 942 for (i = 0; i < SLOT_COUNT; ++i)
571 CXINC; 943 CXINC;
572 } 944
573 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 945 cxstack_ix -= SLOT_COUNT; /* undo allocation */
946 }
574 947
575 c->mainstack = PL_mainstack; 948 c->mainstack = PL_mainstack;
576 949
577 { 950 {
578 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 951 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
579 952
580 slot->defav = GvAV (PL_defgv); 953#if CORO_JIT
581 slot->defsv = DEFSV; 954 save_perl_slots (slot);
582 slot->errsv = ERRSV; 955#else
583 slot->irsgv = GvSV (irsgv);
584
585 #define VAR(name,type) slot->name = PL_ ## name; 956 #define VARx(name,expr,type) slot->name = expr;
586 # include "state.h" 957 #include "state.h"
587 #undef VAR 958#endif
588 } 959 }
589} 960}
590 961
591/* 962/*
592 * allocate various perl stacks. This is almost an exact copy 963 * allocate various perl stacks. This is almost an exact copy
593 * of perl.c:init_stacks, except that it uses less memory 964 * of perl.c:init_stacks, except that it uses less memory
594 * on the (sometimes correct) assumption that coroutines do 965 * on the (sometimes correct) assumption that coroutines do
595 * not usually need a lot of stackspace. 966 * not usually need a lot of stackspace.
596 */ 967 */
597#if CORO_PREFER_PERL_FUNCTIONS 968#if CORO_PREFER_PERL_FUNCTIONS
598# define coro_init_stacks init_stacks 969# define coro_init_stacks(thx) init_stacks ()
599#else 970#else
600static void 971static void
601coro_init_stacks (pTHX) 972coro_init_stacks (pTHX)
602{ 973{
603 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() */
604 PL_curstackinfo->si_type = PERLSI_MAIN; 975 PL_curstackinfo->si_type = PERLSI_MAIN;
605 PL_curstack = PL_curstackinfo->si_stack; 976 PL_curstack = PL_curstackinfo->si_stack;
606 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 977 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
607 978
608 PL_stack_base = AvARRAY(PL_curstack); 979 PL_stack_base = AvARRAY(PL_curstack);
… …
623#endif 994#endif
624 995
625 New(54,PL_scopestack,8,I32); 996 New(54,PL_scopestack,8,I32);
626 PL_scopestack_ix = 0; 997 PL_scopestack_ix = 0;
627 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
628 1002
629 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
630 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
631 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
632 1011
633#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
634 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
635 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
636 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
660 } 1039 }
661 1040
662 Safefree (PL_tmps_stack); 1041 Safefree (PL_tmps_stack);
663 Safefree (PL_markstack); 1042 Safefree (PL_markstack);
664 Safefree (PL_scopestack); 1043 Safefree (PL_scopestack);
1044#if HAS_SCOPESTACK_NAME
1045 Safefree (PL_scopestack_name);
1046#endif
665 Safefree (PL_savestack); 1047 Safefree (PL_savestack);
666#if !PERL_VERSION_ATLEAST (5,10,0) 1048#if !PERL_VERSION_ATLEAST (5,10,0)
667 Safefree (PL_retstack); 1049 Safefree (PL_retstack);
668#endif 1050#endif
669} 1051}
670 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
671static size_t 1062static size_t
672coro_rss (pTHX_ struct coro *coro) 1063coro_rss (pTHX_ struct coro *coro)
673{ 1064{
674 size_t rss = sizeof (*coro); 1065 size_t rss = sizeof (*coro);
675 1066
676 if (coro->mainstack) 1067 if (coro->mainstack)
677 { 1068 {
678 perl_slots tmp_slot;
679 perl_slots *slot;
680
681 if (coro->flags & CF_RUNNING) 1069 if (coro->flags & CF_RUNNING)
682 { 1070 {
683 slot = &tmp_slot; 1071 #define SYM(sym) PL_ ## sym
684 1072 CORO_RSS;
685 #define VAR(name,type) slot->name = PL_ ## name;
686 # include "state.h"
687 #undef VAR 1073 #undef SYM
688 } 1074 }
689 else 1075 else
690 slot = coro->slot;
691
692 if (slot)
693 { 1076 {
694 rss += sizeof (slot->curstackinfo); 1077 #define SYM(sym) coro->slot->sym
695 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1078 CORO_RSS;
696 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1079 #undef SYM
697 rss += slot->tmps_max * sizeof (SV *);
698 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
699 rss += slot->scopestack_max * sizeof (I32);
700 rss += slot->savestack_max * sizeof (ANY);
701
702#if !PERL_VERSION_ATLEAST (5,10,0)
703 rss += slot->retstack_max * sizeof (OP *);
704#endif
705 } 1080 }
706 } 1081 }
707 1082
708 return rss; 1083 return rss;
709} 1084}
710 1085
711/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
712
713static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
714static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
715static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
716 1087
717/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
718#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
719#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
720 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
721 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
722#endif 1093#endif
723 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
724/* 1123/*
725 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
726 * 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
727 * 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),
728 * readback here. 1127 * we just provide our own readback here.
729 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
730 * not expecting this to actually change the hook. This is a potential problem
731 * when a schedule happens then, but we ignore this.
732 */ 1128 */
733static int 1129static int ecb_cold
734coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
735{ 1131{
736 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;
737 1135
738 if (*s == '_') 1136 SV *ssv;
739 {
740 SV **svp = 0;
741 1137
742 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
743 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
744
745 if (svp) 1138 if (!*svp)
746 { 1139 ssv = &PL_sv_undef;
747 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
748 return 0; 1141 ssv = sv_2mortal (newRV_inc (*svp));
749 } 1142 else
750 } 1143 ssv = *svp;
751 1144
752 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1145 sv_setsv (sv, ssv);
1146 return 0;
753} 1147}
754 1148
755static int 1149static int ecb_cold
756coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
757{ 1151{
758 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;
759 1155
760 if (*s == '_')
761 {
762 SV **svp = 0;
763
764 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
765 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
766
767 if (svp)
768 {
769 SV *old = *svp; 1156 SV *old = *svp;
770 *svp = 0; 1157 *svp = 0;
771 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
772 return 0; 1159 return 0;
773 }
774 }
775
776 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
777} 1160}
778 1161
779static int 1162static int ecb_cold
780coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
781{ 1164{
782 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;
783 1168
784 if (*s == '_')
785 {
786 SV **svp = 0;
787
788 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
789 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
790
791 if (svp)
792 {
793 SV *old = *svp; 1169 SV *old = *svp;
794 *svp = newSVsv (sv); 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
795 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
796 return 0; 1172 return 0;
797 }
798 }
799
800 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
801} 1173}
802 1174
803static void 1175static void
804prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
805{ 1177{
… …
811slf_check_nop (pTHX_ struct CoroSLF *frame) 1183slf_check_nop (pTHX_ struct CoroSLF *frame)
812{ 1184{
813 return 0; 1185 return 0;
814} 1186}
815 1187
816static void NOINLINE /* noinline to keep it out of the transfer fast path */ 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 */
817coro_setup (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
818{ 1200{
819 /* 1201 /*
820 * emulate part of the perl startup here. 1202 * emulate part of the perl startup here.
821 */ 1203 */
822 coro_init_stacks (aTHX); 1204 coro_init_stacks (aTHX);
823 1205
824 PL_runops = RUNOPS_DEFAULT; 1206 PL_runops = RUNOPS_DEFAULT;
825 PL_curcop = &PL_compiling; 1207 PL_curcop = &PL_compiling;
826 PL_in_eval = EVAL_NULL; 1208 PL_in_eval = EVAL_NULL;
827 PL_comppad = 0; 1209 PL_comppad = 0;
1210 PL_comppad_name = 0;
1211 PL_comppad_name_fill = 0;
1212 PL_comppad_name_floor = 0;
828 PL_curpm = 0; 1213 PL_curpm = 0;
829 PL_curpad = 0; 1214 PL_curpad = 0;
830 PL_localizing = 0; 1215 PL_localizing = 0;
831 PL_dirty = 0;
832 PL_restartop = 0; 1216 PL_restartop = 0;
833#if PERL_VERSION_ATLEAST (5,10,0) 1217#if PERL_VERSION_ATLEAST (5,10,0)
834 PL_parser = 0; 1218 PL_parser = 0;
835#endif 1219#endif
1220 PL_hints = 0;
836 1221
837 /* recreate the die/warn hooks */ 1222 /* recreate the die/warn hooks */
838 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1223 PL_diehook = SvREFCNT_inc (rv_diehook);
839 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1224 PL_warnhook = SvREFCNT_inc (rv_warnhook);
840 1225
841 GvSV (PL_defgv) = newSV (0); 1226 GvSV (PL_defgv) = newSV (0);
842 GvAV (PL_defgv) = coro->args; coro->args = 0; 1227 GvAV (PL_defgv) = coro->args; coro->args = 0;
843 GvSV (PL_errgv) = newSV (0); 1228 GvSV (PL_errgv) = newSV (0);
844 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
845 PL_rs = newSVsv (GvSV (irsgv)); 1234 PL_rs = newSVsv (GvSV (irsgv));
846 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1235 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
847 1236
848 { 1237 {
849 dSP; 1238 dSP;
850 UNOP myop; 1239 UNOP myop;
851 1240
852 Zero (&myop, 1, UNOP); 1241 Zero (&myop, 1, UNOP);
853 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
1243 myop.op_type = OP_ENTERSUB;
854 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
855 1245
856 PUSHMARK (SP); 1246 PUSHMARK (SP);
857 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1247 XPUSHs ((SV *)coro->startcv);
858 PUTBACK; 1248 PUTBACK;
859 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
860 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
861 SPAGAIN;
862 } 1251 }
863 1252
864 /* 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
865 * 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.
866 */ 1255 */
867 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 */
868 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 */
1258 slf_frame.destroy = 0;
869 1259
870 coro_throw = coro->throw; 1260 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
871} 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 */
872 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
873static void 1280static void
874coro_destruct (pTHX_ struct coro *coro) 1281coro_unwind_stacks (pTHX)
875{ 1282{
876 if (!IN_DESTRUCT) 1283 if (!IN_DESTRUCT)
877 { 1284 {
878 /* restore all saved variables and stuff */ 1285 /* restore all saved variables and stuff */
879 LEAVE_SCOPE (0); 1286 LEAVE_SCOPE (0);
… …
887 POPSTACK_TO (PL_mainstack); 1294 POPSTACK_TO (PL_mainstack);
888 1295
889 /* unwind main stack */ 1296 /* unwind main stack */
890 dounwind (-1); 1297 dounwind (-1);
891 } 1298 }
1299}
892 1300
893 SvREFCNT_dec (GvSV (PL_defgv)); 1301static void
894 SvREFCNT_dec (GvAV (PL_defgv)); 1302destroy_perl (pTHX_ struct coro *coro)
895 SvREFCNT_dec (GvSV (PL_errgv)); 1303{
896 SvREFCNT_dec (PL_defoutgv); 1304 SV *svf [9];
897 SvREFCNT_dec (PL_rs);
898 SvREFCNT_dec (GvSV (irsgv));
899 1305
900 SvREFCNT_dec (PL_diehook);
901 SvREFCNT_dec (PL_warnhook);
902 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
903 SvREFCNT_dec (coro->saved_deffh); 1349 SvREFCNT_dec (coro->saved_deffh);
904 SvREFCNT_dec (coro_throw); 1350 SvREFCNT_dec (coro->rouse_cb);
905 1351 SvREFCNT_dec (coro->invoke_cb);
906 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 }
907} 1356}
908 1357
909INLINE void 1358ecb_inline void
910free_coro_mortal (pTHX) 1359free_coro_mortal (pTHX)
911{ 1360{
912 if (expect_true (coro_mortal)) 1361 if (ecb_expect_true (coro_mortal))
913 { 1362 {
914 SvREFCNT_dec (coro_mortal); 1363 SvREFCNT_dec ((SV *)coro_mortal);
915 coro_mortal = 0; 1364 coro_mortal = 0;
916 } 1365 }
917} 1366}
918 1367
919static int 1368static int
920runops_trace (pTHX) 1369runops_trace (pTHX)
921{ 1370{
922 COP *oldcop = 0; 1371 COP *oldcop = 0;
923 int oldcxix = -2; 1372 int oldcxix = -2;
924 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
925 coro_cctx *cctx = coro->cctx;
926 1373
927 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1374 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
928 { 1375 {
929 PERL_ASYNC_CHECK (); 1376 PERL_ASYNC_CHECK ();
930 1377
931 if (cctx->flags & CC_TRACE_ALL) 1378 if (cctx_current->flags & CC_TRACE_ALL)
932 { 1379 {
933 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)
934 { 1381 {
935 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1382 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
936 SV **bot, **top; 1383 SV **bot, **top;
937 AV *av = newAV (); /* return values */ 1384 AV *av = newAV (); /* return values */
938 SV **cb; 1385 SV **cb;
… …
953 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
954 1401
955 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
956 ENTER; 1403 ENTER;
957 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
958 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
959 PUSHMARK (SP);
960 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
961 PUSHs (fullname); 1408 PUSHs (fullname);
962 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
963 PUTBACK; 1410 PUTBACK;
964 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);
… …
975 1422
976 if (PL_curcop != &PL_compiling) 1423 if (PL_curcop != &PL_compiling)
977 { 1424 {
978 SV **cb; 1425 SV **cb;
979 1426
980 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1427 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
981 { 1428 {
982 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1429 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
983 1430
984 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1431 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
985 { 1432 {
986 runops_proc_t old_runops = PL_runops;
987 dSP; 1433 dSP;
988 GV *gv = CvGV (cx->blk_sub.cv); 1434 GV *gv = CvGV (cx->blk_sub.cv);
989 SV *fullname = sv_2mortal (newSV (0)); 1435 SV *fullname = sv_2mortal (newSV (0));
990 1436
991 if (isGV (gv)) 1437 if (isGV (gv))
992 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
993 1439
994 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
995 ENTER; 1441 ENTER;
996 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
997 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
998 PUSHMARK (SP);
999 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1000 PUSHs (fullname); 1446 PUSHs (fullname);
1001 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);
1002 PUTBACK; 1448 PUTBACK;
1003 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);
1004 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);
1005 SPAGAIN; 1451 SPAGAIN;
1006 FREETMPS; 1452 FREETMPS;
… …
1009 } 1455 }
1010 1456
1011 oldcxix = cxstack_ix; 1457 oldcxix = cxstack_ix;
1012 } 1458 }
1013 1459
1014 if (cctx->flags & CC_TRACE_LINE) 1460 if (cctx_current->flags & CC_TRACE_LINE)
1015 { 1461 {
1016 dSP; 1462 dSP;
1017 1463
1018 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1019 ENTER; 1465 ENTER;
1020 SAVETMPS; 1466 SAVETMPS;
1021 EXTEND (SP, 3);
1022 PL_runops = RUNOPS_DEFAULT;
1023 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1024 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1025 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1026 PUTBACK; 1471 PUTBACK;
1027 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);
1028 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);
… …
1038 1483
1039 TAINT_NOT; 1484 TAINT_NOT;
1040 return 0; 1485 return 0;
1041} 1486}
1042 1487
1488static struct CoroSLF cctx_ssl_frame;
1489
1043static void 1490static void
1044prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1491slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1045{ 1492{
1046 ta->prev = (struct coro *)cctx;
1047 ta->next = 0; 1493 ta->prev = 0;
1048} 1494}
1049 1495
1050/* inject a fake call to Coro::State::_cctx_init into the execution */ 1496static int
1051/* _cctx_init should be careful, as it could be called at almost any time */ 1497slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1052/* during execution of a perl program */
1053/* also initialises PL_top_env */
1054static void NOINLINE
1055cctx_prepare (pTHX_ coro_cctx *cctx)
1056{ 1498{
1057 dSP; 1499 *frame = cctx_ssl_frame;
1058 UNOP myop;
1059 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{
1060 PL_top_env = &PL_start_env; 1508 PL_top_env = &PL_start_env;
1061 1509
1062 if (cctx->flags & CC_TRACE) 1510 if (cctx_current->flags & CC_TRACE)
1063 PL_runops = runops_trace; 1511 PL_runops = runops_trace;
1064 1512
1065 Zero (&myop, 1, UNOP); 1513 /* we already must be executing an SLF op, there is no other valid way
1066 myop.op_next = PL_op; 1514 * that can lead to creation of a new cctx */
1067 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));
1068 1517
1069 PUSHMARK (SP); 1518 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1070 EXTEND (SP, 2); 1519 cctx_ssl_frame = slf_frame;
1071 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1520
1072 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1521 slf_frame.prepare = slf_prepare_set_stacklevel;
1073 PUTBACK; 1522 slf_frame.check = slf_check_set_stacklevel;
1074 PL_op = (OP *)&myop;
1075 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1076 SPAGAIN;
1077} 1523}
1078 1524
1079/* 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 */
1080INLINE void 1526ecb_inline void
1081transfer_tail (pTHX) 1527transfer_tail (pTHX)
1082{ 1528{
1083 free_coro_mortal (aTHX); 1529 free_coro_mortal (aTHX);
1530}
1531
1532/* try to exit the same way perl's main function would do */
1533/* we do not bother resetting the environment or other things *7
1534/* that are not, uhm, essential */
1535/* this obviously also doesn't work when perl is embedded */
1536static void ecb_noinline ecb_cold
1537perlish_exit (pTHX)
1538{
1539 int exitstatus = perl_destruct (PL_curinterp);
1540 perl_free (PL_curinterp);
1541 exit (exitstatus);
1084} 1542}
1085 1543
1086/* 1544/*
1087 * this is a _very_ stripped down perl interpreter ;) 1545 * this is a _very_ stripped down perl interpreter ;)
1088 */ 1546 */
… …
1100 /* normally we would need to skip the entersub here */ 1558 /* normally we would need to skip the entersub here */
1101 /* 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 */
1102 /* PL_nop = PL_nop->op_next */ 1560 /* PL_nop = PL_nop->op_next */
1103 1561
1104 /* inject a fake subroutine call to cctx_init */ 1562 /* inject a fake subroutine call to cctx_init */
1105 cctx_prepare (aTHX_ (coro_cctx *)arg); 1563 cctx_prepare (aTHX);
1106 1564
1107 /* cctx_run is the alternative tail of transfer() */ 1565 /* cctx_run is the alternative tail of transfer() */
1108 transfer_tail (aTHX); 1566 transfer_tail (aTHX);
1109 1567
1110 /* 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 */
1111 PL_restartop = PL_op; 1569 PL_restartop = PL_op;
1112 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;
1113 1583
1114 /* 1584 /*
1115 * 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
1116 * 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)
1117 * 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
1118 * bootstrap-time "top" top_env, as we cannot restore the "main" 1588 * doing in that case. YMMV.
1119 * coroutine as Coro has no such concept
1120 */ 1589 */
1121 PL_top_env = main_top_env; 1590 perlish_exit (aTHX);
1122 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1123 } 1591 }
1124} 1592}
1125 1593
1126static coro_cctx * 1594static coro_cctx *
1127cctx_new () 1595cctx_new (void)
1128{ 1596{
1129 coro_cctx *cctx; 1597 coro_cctx *cctx;
1130 1598
1131 ++cctx_count; 1599 ++cctx_count;
1132 New (0, cctx, 1, coro_cctx); 1600 New (0, cctx, 1, coro_cctx);
… …
1138 return cctx; 1606 return cctx;
1139} 1607}
1140 1608
1141/* create a new cctx only suitable as source */ 1609/* create a new cctx only suitable as source */
1142static coro_cctx * 1610static coro_cctx *
1143cctx_new_empty () 1611cctx_new_empty (void)
1144{ 1612{
1145 coro_cctx *cctx = cctx_new (); 1613 coro_cctx *cctx = cctx_new ();
1146 1614
1147 cctx->sptr = 0; 1615 cctx->stack.sptr = 0;
1148 coro_create (&cctx->cctx, 0, 0, 0, 0); 1616 coro_create (&cctx->cctx, 0, 0, 0, 0);
1149 1617
1150 return cctx; 1618 return cctx;
1151} 1619}
1152 1620
1153/* create a new cctx suitable as destination/running a perl interpreter */ 1621/* create a new cctx suitable as destination/running a perl interpreter */
1154static coro_cctx * 1622static coro_cctx *
1155cctx_new_run () 1623cctx_new_run (void)
1156{ 1624{
1157 coro_cctx *cctx = cctx_new (); 1625 coro_cctx *cctx = cctx_new ();
1158 void *stack_start;
1159 size_t stack_size;
1160 1626
1161#if HAVE_MMAP 1627 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1162 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1163 /* mmap supposedly does allocate-on-write for us */
1164 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1165
1166 if (cctx->sptr != (void *)-1)
1167 {
1168 #if CORO_STACKGUARD
1169 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1170 #endif
1171 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1172 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1173 cctx->flags |= CC_MAPPED;
1174 } 1628 {
1175 else
1176#endif
1177 {
1178 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1179 New (0, cctx->sptr, cctx_stacksize, long);
1180
1181 if (!cctx->sptr)
1182 {
1183 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1629 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1184 _exit (EXIT_FAILURE); 1630 _exit (EXIT_FAILURE);
1185 }
1186
1187 stack_start = cctx->sptr;
1188 stack_size = cctx->ssize;
1189 } 1631 }
1190 1632
1191 #if CORO_USE_VALGRIND
1192 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1193 #endif
1194
1195 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);
1196 1634
1197 return cctx; 1635 return cctx;
1198} 1636}
1199 1637
1200static void 1638static void
1201cctx_destroy (coro_cctx *cctx) 1639cctx_destroy (coro_cctx *cctx)
1202{ 1640{
1203 if (!cctx) 1641 if (!cctx)
1204 return; 1642 return;
1205 1643
1644 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1645
1206 --cctx_count; 1646 --cctx_count;
1207 coro_destroy (&cctx->cctx); 1647 coro_destroy (&cctx->cctx);
1208 1648
1209 /* coro_transfer creates new, empty cctx's */ 1649 coro_stack_free (&cctx->stack);
1210 if (cctx->sptr)
1211 {
1212 #if CORO_USE_VALGRIND
1213 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1214 #endif
1215
1216#if HAVE_MMAP
1217 if (cctx->flags & CC_MAPPED)
1218 munmap (cctx->sptr, cctx->ssize);
1219 else
1220#endif
1221 Safefree (cctx->sptr);
1222 }
1223 1650
1224 Safefree (cctx); 1651 Safefree (cctx);
1225} 1652}
1226 1653
1227/* wether this cctx should be destructed */ 1654/* wether this cctx should be destructed */
1228#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))
1229 1656
1230static coro_cctx * 1657static coro_cctx *
1231cctx_get (pTHX) 1658cctx_get (pTHX)
1232{ 1659{
1233 while (expect_true (cctx_first)) 1660 while (ecb_expect_true (cctx_first))
1234 { 1661 {
1235 coro_cctx *cctx = cctx_first; 1662 coro_cctx *cctx = cctx_first;
1236 cctx_first = cctx->next; 1663 cctx_first = cctx->next;
1237 --cctx_idle; 1664 --cctx_idle;
1238 1665
1239 if (expect_true (!CCTX_EXPIRED (cctx))) 1666 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1240 return cctx; 1667 return cctx;
1241 1668
1242 cctx_destroy (cctx); 1669 cctx_destroy (cctx);
1243 } 1670 }
1244 1671
… …
1246} 1673}
1247 1674
1248static void 1675static void
1249cctx_put (coro_cctx *cctx) 1676cctx_put (coro_cctx *cctx)
1250{ 1677{
1251 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));
1252 1679
1253 /* free another cctx if overlimit */ 1680 /* free another cctx if overlimit */
1254 if (expect_false (cctx_idle >= cctx_max_idle)) 1681 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1255 { 1682 {
1256 coro_cctx *first = cctx_first; 1683 coro_cctx *first = cctx_first;
1257 cctx_first = first->next; 1684 cctx_first = first->next;
1258 --cctx_idle; 1685 --cctx_idle;
1259 1686
… …
1270static void 1697static void
1271transfer_check (pTHX_ struct coro *prev, struct coro *next) 1698transfer_check (pTHX_ struct coro *prev, struct coro *next)
1272{ 1699{
1273 /* TODO: throwing up here is considered harmful */ 1700 /* TODO: throwing up here is considered harmful */
1274 1701
1275 if (expect_true (prev != next)) 1702 if (ecb_expect_true (prev != next))
1276 { 1703 {
1277 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1704 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1278 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,");
1279 1706
1280 if (expect_false (next->flags & CF_RUNNING)) 1707 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1281 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1282
1283 if (expect_false (next->flags & CF_DESTROYED))
1284 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,");
1285 1709
1286#if !PERL_VERSION_ATLEAST (5,10,0) 1710#if !PERL_VERSION_ATLEAST (5,10,0)
1287 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1711 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1288 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,");
1289#endif 1713#endif
1290 } 1714 }
1291} 1715}
1292 1716
1293/* always use the TRANSFER macro */ 1717/* always use the TRANSFER macro */
1294static void NOINLINE /* noinline so we have a fixed stackframe */ 1718static void ecb_noinline /* noinline so we have a fixed stackframe */
1295transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1719transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1296{ 1720{
1297 dSTACKLEVEL; 1721 dSTACKLEVEL;
1298 1722
1299 /* sometimes transfer is only called to set idle_sp */ 1723 /* sometimes transfer is only called to set idle_sp */
1300 if (expect_false (!next)) 1724 if (ecb_expect_false (!prev))
1301 { 1725 {
1302 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1726 cctx_current->idle_sp = STACKLEVEL;
1303 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 */
1304 } 1728 }
1305 else if (expect_true (prev != next)) 1729 else if (ecb_expect_true (prev != next))
1306 { 1730 {
1307 coro_cctx *prev__cctx; 1731 coro_cctx *cctx_prev;
1308 1732
1309 if (expect_false (prev->flags & CF_NEW)) 1733 if (ecb_expect_false (prev->flags & CF_NEW))
1310 { 1734 {
1311 /* create a new empty/source context */ 1735 /* create a new empty/source context */
1312 prev->cctx = cctx_new_empty ();
1313 prev->flags &= ~CF_NEW; 1736 prev->flags &= ~CF_NEW;
1314 prev->flags |= CF_RUNNING; 1737 prev->flags |= CF_RUNNING;
1315 } 1738 }
1316 1739
1317 prev->flags &= ~CF_RUNNING; 1740 prev->flags &= ~CF_RUNNING;
1318 next->flags |= CF_RUNNING; 1741 next->flags |= CF_RUNNING;
1319 1742
1320 /* first get rid of the old state */ 1743 /* first get rid of the old state */
1321 save_perl (aTHX_ prev); 1744 save_perl (aTHX_ prev);
1322 1745
1323 if (expect_false (next->flags & CF_NEW)) 1746 if (ecb_expect_false (next->flags & CF_NEW))
1324 { 1747 {
1325 /* need to start coroutine */ 1748 /* need to start coroutine */
1326 next->flags &= ~CF_NEW; 1749 next->flags &= ~CF_NEW;
1327 /* setup coroutine call */ 1750 /* setup coroutine call */
1328 coro_setup (aTHX_ next); 1751 init_perl (aTHX_ next);
1329 } 1752 }
1330 else 1753 else
1331 load_perl (aTHX_ next); 1754 load_perl (aTHX_ next);
1332 1755
1333 prev__cctx = prev->cctx;
1334
1335 /* possibly untie and reuse the cctx */ 1756 /* possibly untie and reuse the cctx */
1336 if (expect_true ( 1757 if (ecb_expect_true (
1337 prev__cctx->idle_sp == (void *)stacklevel 1758 cctx_current->idle_sp == STACKLEVEL
1338 && !(prev__cctx->flags & CC_TRACE) 1759 && !(cctx_current->flags & CC_TRACE)
1339 && !force_cctx 1760 && !force_cctx
1340 )) 1761 ))
1341 { 1762 {
1342 /* 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 */
1343 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));
1344 1765
1345 prev->cctx = 0;
1346
1347 /* 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. */
1348 /* 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 */
1349 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1768 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1350 if (!next->cctx) 1769 if (ecb_expect_true (!next->cctx))
1351 next->cctx = cctx_get (aTHX); 1770 next->cctx = cctx_get (aTHX);
1352 1771
1353 cctx_put (prev__cctx); 1772 cctx_put (cctx_current);
1354 } 1773 }
1774 else
1775 prev->cctx = cctx_current;
1355 1776
1356 ++next->usecount; 1777 ++next->usecount;
1357 1778
1358 if (expect_true (!next->cctx)) 1779 cctx_prev = cctx_current;
1359 next->cctx = cctx_get (aTHX); 1780 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1360 1781
1361 if (expect_false (prev__cctx != next->cctx)) 1782 next->cctx = 0;
1783
1784 if (ecb_expect_false (cctx_prev != cctx_current))
1362 { 1785 {
1363 prev__cctx->top_env = PL_top_env; 1786 cctx_prev->top_env = PL_top_env;
1364 PL_top_env = next->cctx->top_env; 1787 PL_top_env = cctx_current->top_env;
1365 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1788 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1366 } 1789 }
1367 1790
1368 transfer_tail (aTHX); 1791 transfer_tail (aTHX);
1369 } 1792 }
1370} 1793}
… …
1372#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))
1373#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1796#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1374 1797
1375/** high level stuff ********************************************************/ 1798/** high level stuff ********************************************************/
1376 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 */
1377static int 1802static void
1803coro_call_on_destroy (pTHX_ struct coro *coro);
1804
1805static void
1378coro_state_destroy (pTHX_ struct coro *coro) 1806coro_state_destroy (pTHX_ struct coro *coro)
1379{ 1807{
1380 if (coro->flags & CF_DESTROYED) 1808 if (coro->flags & CF_ZOMBIE)
1381 return 0; 1809 return;
1382 1810
1383 if (coro->on_destroy)
1384 coro->on_destroy (aTHX_ coro); 1811 slf_destroy (aTHX_ coro);
1385 1812
1386 coro->flags |= CF_DESTROYED; 1813 coro->flags |= CF_ZOMBIE;
1387 1814
1388 if (coro->flags & CF_READY) 1815 if (coro->flags & CF_READY)
1389 { 1816 {
1390 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1817 /* reduce nready, as destroying a ready coro effectively unreadies it */
1391 /* alternative: look through all ready queues and remove the coro */ 1818 /* alternative: look through all ready queues and remove the coro */
1392 --coro_nready; 1819 --coro_nready;
1393 } 1820 }
1394 else 1821 else
1395 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 */
1396 1823
1397 if (coro->mainstack && coro->mainstack != main_mainstack)
1398 {
1399 struct coro temp;
1400
1401 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1402
1403 save_perl (aTHX_ &temp);
1404 load_perl (aTHX_ coro);
1405
1406 coro_destruct (aTHX_ coro);
1407
1408 load_perl (aTHX_ &temp);
1409
1410 coro->slot = 0;
1411 }
1412
1413 cctx_destroy (coro->cctx);
1414 SvREFCNT_dec (coro->args);
1415
1416 if (coro->next) coro->next->prev = coro->prev; 1824 if (coro->next) coro->next->prev = coro->prev;
1417 if (coro->prev) coro->prev->next = coro->next; 1825 if (coro->prev) coro->prev->next = coro->next;
1418 if (coro == coro_first) coro_first = coro->next; 1826 if (coro == coro_first) coro_first = coro->next;
1419 1827
1420 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 */
1421} 1843}
1422 1844
1423static int 1845static int
1424coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1846coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1425{ 1847{
1426 struct coro *coro = (struct coro *)mg->mg_ptr; 1848 struct coro *coro = (struct coro *)mg->mg_ptr;
1427 mg->mg_ptr = 0; 1849 mg->mg_ptr = 0;
1428 1850
1429 coro->hv = 0;
1430
1431 if (--coro->refcnt < 0)
1432 {
1433 coro_state_destroy (aTHX_ coro); 1851 coro_state_destroy (aTHX_ coro);
1852 SvREFCNT_dec (coro->on_destroy);
1853 SvREFCNT_dec (coro->status);
1854
1434 Safefree (coro); 1855 Safefree (coro);
1435 }
1436 1856
1437 return 0; 1857 return 0;
1438} 1858}
1439 1859
1440static int 1860static int ecb_cold
1441coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1861coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1442{ 1862{
1443 struct coro *coro = (struct coro *)mg->mg_ptr; 1863 /* called when perl clones the current process the slow way (windows process emulation) */
1444 1864 /* we simply nuke the pointers in the copy, causing perl to croak */
1445 ++coro->refcnt; 1865 mg->mg_ptr = 0;
1866 mg->mg_virtual = 0;
1446 1867
1447 return 0; 1868 return 0;
1448} 1869}
1449 1870
1450static MGVTBL coro_state_vtbl = { 1871static MGVTBL coro_state_vtbl = {
… …
1475 TRANSFER (ta, 1); 1896 TRANSFER (ta, 1);
1476} 1897}
1477 1898
1478/** Coro ********************************************************************/ 1899/** Coro ********************************************************************/
1479 1900
1480INLINE void 1901ecb_inline void
1481coro_enq (pTHX_ struct coro *coro) 1902coro_enq (pTHX_ struct coro *coro)
1482{ 1903{
1483 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1904 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1484}
1485 1905
1486INLINE 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 *
1487coro_deq (pTHX) 1914coro_deq (pTHX)
1488{ 1915{
1489 int prio; 1916 int prio;
1490 1917
1491 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1918 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1492 if (AvFILLp (coro_ready [prio]) >= 0) 1919 {
1493 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 }
1494 1929
1495 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;
1496} 1948}
1497 1949
1498static int 1950static int
1499api_ready (pTHX_ SV *coro_sv) 1951api_ready (pTHX_ SV *coro_sv)
1500{ 1952{
1501 struct coro *coro;
1502 SV *sv_hook;
1503 void (*xs_hook)(void);
1504
1505 if (SvROK (coro_sv))
1506 coro_sv = SvRV (coro_sv);
1507
1508 coro = SvSTATE (coro_sv); 1953 struct coro *coro = SvSTATE (coro_sv);
1509 1954
1510 if (coro->flags & CF_READY) 1955 if (coro->flags & CF_READY)
1511 return 0; 1956 return 0;
1512 1957
1513 coro->flags |= CF_READY; 1958 coro->flags |= CF_READY;
1514 1959
1515 sv_hook = coro_nready ? 0 : coro_readyhook;
1516 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1517
1518 coro_enq (aTHX_ coro); 1960 coro_enq (aTHX_ coro);
1519 ++coro_nready;
1520 1961
1521 if (sv_hook) 1962 if (!coro_nready++)
1522 { 1963 if (coroapi.readyhook)
1523 dSP; 1964 coroapi.readyhook ();
1524
1525 ENTER;
1526 SAVETMPS;
1527
1528 PUSHMARK (SP);
1529 PUTBACK;
1530 call_sv (sv_hook, G_DISCARD);
1531 SPAGAIN;
1532
1533 FREETMPS;
1534 LEAVE;
1535 }
1536
1537 if (xs_hook)
1538 xs_hook ();
1539 1965
1540 return 1; 1966 return 1;
1541} 1967}
1542 1968
1543static int 1969static int
1544api_is_ready (pTHX_ SV *coro_sv) 1970api_is_ready (pTHX_ SV *coro_sv)
1545{ 1971{
1546 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1972 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1547} 1973}
1548 1974
1549INLINE void 1975/* expects to own a reference to next->hv */
1976ecb_inline void
1550prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1977prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1551{ 1978{
1552 SV *prev_sv, *next_sv;
1553
1554 for (;;)
1555 {
1556 next_sv = coro_deq (aTHX);
1557
1558 /* nothing to schedule: call the idle handler */
1559 if (expect_false (!next_sv))
1560 {
1561 dSP;
1562
1563 ENTER;
1564 SAVETMPS;
1565
1566 PUSHMARK (SP);
1567 PUTBACK;
1568 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1569 SPAGAIN;
1570
1571 FREETMPS;
1572 LEAVE;
1573 continue;
1574 }
1575
1576 ta->next = SvSTATE_hv (next_sv);
1577
1578 /* cannot transfer to destroyed coros, skip and look for next */
1579 if (expect_false (ta->next->flags & CF_DESTROYED))
1580 {
1581 SvREFCNT_dec (next_sv);
1582 /* coro_nready has already been taken care of by destroy */
1583 continue;
1584 }
1585
1586 --coro_nready;
1587 break;
1588 }
1589
1590 /* free this only after the transfer */
1591 prev_sv = SvRV (coro_current); 1979 SV *prev_sv = SvRV (coro_current);
1980
1592 ta->prev = SvSTATE_hv (prev_sv); 1981 ta->prev = SvSTATE_hv (prev_sv);
1982 ta->next = next;
1983
1593 TRANSFER_CHECK (*ta); 1984 TRANSFER_CHECK (*ta);
1594 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1985
1595 ta->next->flags &= ~CF_READY;
1596 SvRV_set (coro_current, next_sv); 1986 SvRV_set (coro_current, (SV *)next->hv);
1597 1987
1598 free_coro_mortal (aTHX); 1988 free_coro_mortal (aTHX);
1599 coro_mortal = prev_sv; 1989 coro_mortal = prev_sv;
1600} 1990}
1601 1991
1602INLINE 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
1603prepare_cede (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede (pTHX_ struct coro_transfer_args *ta)
1604{ 2064{
1605 api_ready (aTHX_ coro_current); 2065 api_ready (aTHX_ coro_current);
1606 prepare_schedule (aTHX_ ta); 2066 prepare_schedule (aTHX_ ta);
1607} 2067}
1608 2068
1609INLINE void 2069ecb_inline void
1610prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2070prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1611{ 2071{
1612 SV *prev = SvRV (coro_current); 2072 SV *prev = SvRV (coro_current);
1613 2073
1614 if (coro_nready) 2074 if (coro_nready)
… …
1627 2087
1628 prepare_schedule (aTHX_ &ta); 2088 prepare_schedule (aTHX_ &ta);
1629 TRANSFER (ta, 1); 2089 TRANSFER (ta, 1);
1630} 2090}
1631 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
1632static int 2102static int
1633api_cede (pTHX) 2103api_cede (pTHX)
1634{ 2104{
1635 struct coro_transfer_args ta; 2105 struct coro_transfer_args ta;
1636 2106
1637 prepare_cede (aTHX_ &ta); 2107 prepare_cede (aTHX_ &ta);
1638 2108
1639 if (expect_true (ta.prev != ta.next)) 2109 if (ecb_expect_true (ta.prev != ta.next))
1640 { 2110 {
1641 TRANSFER (ta, 1); 2111 TRANSFER (ta, 1);
1642 return 1; 2112 return 1;
1643 } 2113 }
1644 else 2114 else
… …
1663static void 2133static void
1664api_trace (pTHX_ SV *coro_sv, int flags) 2134api_trace (pTHX_ SV *coro_sv, int flags)
1665{ 2135{
1666 struct coro *coro = SvSTATE (coro_sv); 2136 struct coro *coro = SvSTATE (coro_sv);
1667 2137
2138 if (coro->flags & CF_RUNNING)
2139 croak ("cannot enable tracing on a running coroutine, caught");
2140
1668 if (flags & CC_TRACE) 2141 if (flags & CC_TRACE)
1669 { 2142 {
1670 if (!coro->cctx) 2143 if (!coro->cctx)
1671 coro->cctx = cctx_new_run (); 2144 coro->cctx = cctx_new_run ();
1672 else if (!(coro->cctx->flags & CC_TRACE)) 2145 else if (!(coro->cctx->flags & CC_TRACE))
1673 croak ("cannot enable tracing on coroutine with custom stack,"); 2146 croak ("cannot enable tracing on coroutine with custom stack, caught");
1674 2147
1675 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2148 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1676 } 2149 }
1677 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2150 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1678 { 2151 {
… …
1681 if (coro->flags & CF_RUNNING) 2154 if (coro->flags & CF_RUNNING)
1682 PL_runops = RUNOPS_DEFAULT; 2155 PL_runops = RUNOPS_DEFAULT;
1683 else 2156 else
1684 coro->slot->runops = RUNOPS_DEFAULT; 2157 coro->slot->runops = RUNOPS_DEFAULT;
1685 } 2158 }
2159}
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;
1686} 2616}
1687 2617
1688/*****************************************************************************/ 2618/*****************************************************************************/
1689/* schedule-like-function opcode (SLF) */ 2619/* schedule-like-function opcode (SLF) */
1690 2620
… …
1714 2644
1715 RETURNOP (slf_restore.op_first); 2645 RETURNOP (slf_restore.op_first);
1716} 2646}
1717 2647
1718static void 2648static void
1719slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1720{
1721 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1722}
1723
1724static void
1725slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1726{
1727 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1728
1729 frame->prepare = slf_prepare_set_stacklevel;
1730 frame->check = slf_check_nop;
1731 frame->data = (void *)SvIV (arg [0]);
1732}
1733
1734static void
1735slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2649slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1736{ 2650{
1737 SV **arg = (SV **)slf_frame.data; 2651 SV **arg = (SV **)slf_frame.data;
1738 2652
1739 prepare_transfer (aTHX_ ta, arg [0], arg [1]); 2653 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
… …
1756 frame->prepare = prepare_schedule; 2670 frame->prepare = prepare_schedule;
1757 frame->check = slf_check_nop; 2671 frame->check = slf_check_nop;
1758} 2672}
1759 2673
1760static void 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
1761slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2703slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1762{ 2704{
1763 frame->prepare = prepare_cede; 2705 frame->prepare = prepare_cede;
1764 frame->check = slf_check_nop; 2706 frame->check = slf_check_nop;
1765} 2707}
… …
1769{ 2711{
1770 frame->prepare = prepare_cede_notself; 2712 frame->prepare = prepare_cede_notself;
1771 frame->check = slf_check_nop; 2713 frame->check = slf_check_nop;
1772} 2714}
1773 2715
1774/* we hijack an hopefully unused CV flag for our purposes */ 2716/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
1775#define CVf_SLF 0x4000 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}
1776 2734
1777/* 2735/*
1778 * these not obviously related functions are all rolled into one 2736 * these not obviously related functions are all rolled into one
1779 * function to increase chances that they all will call transfer with the same 2737 * function to increase chances that they all will call transfer with the same
1780 * stack offset 2738 * stack offset
… …
1786 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2744 I32 checkmark; /* mark SP to see how many elements check has pushed */
1787 2745
1788 /* set up the slf frame, unless it has already been set-up */ 2746 /* set up the slf frame, unless it has already been set-up */
1789 /* the latter happens when a new coro has been started */ 2747 /* the latter happens when a new coro has been started */
1790 /* or when a new cctx was attached to an existing coroutine */ 2748 /* or when a new cctx was attached to an existing coroutine */
1791 if (expect_true (!slf_frame.prepare)) 2749 if (ecb_expect_true (!slf_frame.prepare))
1792 { 2750 {
1793 /* first iteration */ 2751 /* first iteration */
1794 dSP; 2752 dSP;
1795 SV **arg = PL_stack_base + TOPMARK + 1; 2753 SV **arg = PL_stack_base + TOPMARK + 1;
1796 int items = SP - arg; /* args without function object */ 2754 int items = SP - arg; /* args without function object */
… …
1836 } 2794 }
1837 while (slf_frame.check (aTHX_ &slf_frame)); 2795 while (slf_frame.check (aTHX_ &slf_frame));
1838 2796
1839 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2797 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1840 2798
1841 /* return value handling - mostly like entersub */
1842 {
1843 dSP;
1844 SV **bot = PL_stack_base + checkmark;
1845 int gimme = GIMME_V;
1846
1847 /* make sure we put something on the stack in scalar context */
1848 if (gimme == G_SCALAR)
1849 {
1850 if (sp == bot)
1851 XPUSHs (&PL_sv_undef);
1852
1853 SP = bot + 1;
1854 }
1855
1856 PUTBACK;
1857 }
1858
1859 /* exception handling */ 2799 /* exception handling */
1860 if (expect_false (coro_throw)) 2800 if (ecb_expect_false (CORO_THROW))
1861 { 2801 {
1862 SV *exception = sv_2mortal (coro_throw); 2802 SV *exception = sv_2mortal (CORO_THROW);
1863 2803
1864 coro_throw = 0; 2804 CORO_THROW = 0;
1865 sv_setsv (ERRSV, exception); 2805 sv_setsv (ERRSV, exception);
1866 croak (0); 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;
1867 } 2825 }
1868 2826
1869 return NORMAL; 2827 return NORMAL;
1870} 2828}
1871 2829
… …
1899 if (PL_op->op_flags & OPf_STACKED) 2857 if (PL_op->op_flags & OPf_STACKED)
1900 { 2858 {
1901 if (items > slf_arga) 2859 if (items > slf_arga)
1902 { 2860 {
1903 slf_arga = items; 2861 slf_arga = items;
1904 free (slf_argv); 2862 Safefree (slf_argv);
1905 slf_argv = malloc (slf_arga * sizeof (SV *)); 2863 New (0, slf_argv, slf_arga, SV *);
1906 } 2864 }
1907 2865
1908 slf_argc = items; 2866 slf_argc = items;
1909 2867
1910 for (i = 0; i < items; ++i) 2868 for (i = 0; i < items; ++i)
… …
1912 } 2870 }
1913 else 2871 else
1914 slf_argc = 0; 2872 slf_argc = 0;
1915 2873
1916 PL_op->op_ppaddr = pp_slf; 2874 PL_op->op_ppaddr = pp_slf;
1917 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2875 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1918 2876
1919 PL_op = (OP *)&slf_restore; 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);
1920} 3017}
1921 3018
1922/*****************************************************************************/ 3019/*****************************************************************************/
1923/* PerlIO::cede */ 3020/* PerlIO::cede */
1924 3021
… …
1926{ 3023{
1927 PerlIOBuf base; 3024 PerlIOBuf base;
1928 NV next, every; 3025 NV next, every;
1929} PerlIOCede; 3026} PerlIOCede;
1930 3027
1931static IV 3028static IV ecb_cold
1932PerlIOCede_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)
1933{ 3030{
1934 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3031 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1935 3032
1936 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3033 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1937 self->next = nvtime () + self->every; 3034 self->next = nvtime () + self->every;
1938 3035
1939 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3036 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1940} 3037}
1941 3038
1942static SV * 3039static SV * ecb_cold
1943PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3040PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1944{ 3041{
1945 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3042 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1946 3043
1947 return newSVnv (self->every); 3044 return newSVnv (self->every);
… …
1993 PerlIOBuf_get_cnt, 3090 PerlIOBuf_get_cnt,
1994 PerlIOBuf_set_ptrcnt, 3091 PerlIOBuf_set_ptrcnt,
1995}; 3092};
1996 3093
1997/*****************************************************************************/ 3094/*****************************************************************************/
3095/* Coro::Semaphore & Coro::Signal */
3096
3097static SV *
3098coro_waitarray_new (pTHX_ int count)
3099{
3100 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3101 AV *av = newAV ();
3102 SV **ary;
3103
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);
3117
3118 return newRV_noinc ((SV *)av);
3119}
3120
1998/* Coro::Semaphore */ 3121/* semaphore */
1999 3122
2000static void 3123static void
2001coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 3124coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2002{ 3125{
2003 SV *count_sv = AvARRAY (av)[0]; 3126 SV *count_sv = AvARRAY (av)[0];
… …
2015 AvARRAY (av)[0] = AvARRAY (av)[1]; 3138 AvARRAY (av)[0] = AvARRAY (av)[1];
2016 AvARRAY (av)[1] = count_sv; 3139 AvARRAY (av)[1] = count_sv;
2017 cb = av_shift (av); 3140 cb = av_shift (av);
2018 3141
2019 if (SvOBJECT (cb)) 3142 if (SvOBJECT (cb))
3143 {
2020 api_ready (aTHX_ cb); 3144 api_ready (aTHX_ cb);
2021 else 3145 --count;
2022 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 }
2023 3155
2024 SvREFCNT_dec (cb); 3156 SvREFCNT_dec_NN (cb);
2025
2026 --count;
2027 } 3157 }
2028} 3158}
2029 3159
2030static void 3160static void
2031coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3161coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2032{ 3162{
2033 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3163 /* call $sem->adjust (0) to possibly wake up some other waiters */
2034 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3164 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2035} 3165}
2036 3166
2037static int 3167static int
2038slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3168slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2039{ 3169{
2040 AV *av = (AV *)frame->data; 3170 AV *av = (AV *)frame->data;
2041 SV *count_sv = AvARRAY (av)[0]; 3171 SV *count_sv = AvARRAY (av)[0];
3172 SV *coro_hv = SvRV (coro_current);
2042 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 }
2043 if (SvIVX (count_sv) > 0) 3184 else if (SvIVX (count_sv) > 0)
2044 { 3185 {
2045 SvSTATE_current->on_destroy = 0; 3186 if (acquire)
2046 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
2047 return 0; 3191 return 0;
2048 } 3192 }
2049 else 3193 else
2050 { 3194 {
2051 int i; 3195 int i;
2052 /* 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 */
2053 /* 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 */
2054 /* this avoids some degenerate memory usage cases */ 3198 /* this avoids some degenerate memory usage cases */
2055 3199 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2056 for (i = 1; i <= AvFILLp (av); ++i)
2057 if (AvARRAY (av)[i] == SvRV (coro_current)) 3200 if (AvARRAY (av)[i] == coro_hv)
2058 return 1; 3201 return 1;
2059 3202
2060 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3203 av_push (av, SvREFCNT_inc (coro_hv));
2061 return 1; 3204 return 1;
2062 } 3205 }
2063} 3206}
2064 3207
2065static 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
2066slf_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)
2067{ 3222{
2068 AV *av = (AV *)SvRV (arg [0]); 3223 AV *av = (AV *)SvRV (arg [0]);
2069 3224
2070 if (SvIVX (AvARRAY (av)[0]) > 0) 3225 if (SvIVX (AvARRAY (av)[0]) > 0)
2071 { 3226 {
2072 frame->data = (void *)av; 3227 frame->data = (void *)av;
2073 frame->prepare = prepare_nop; 3228 frame->prepare = prepare_nop;
2074 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2075 } 3229 }
2076 else 3230 else
2077 { 3231 {
2078 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3232 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2079 3233
2080 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3234 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2081 frame->prepare = prepare_schedule; 3235 frame->prepare = prepare_schedule;
2082
2083 /* to avoid race conditions when a woken-up coro gets terminated */ 3236 /* to avoid race conditions when a woken-up coro gets terminated */
2084 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3237 /* we arrange for a temporary on_destroy that calls adjust (0) */
2085 assert (!SvSTATE_current->on_destroy);//D
2086 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3238 frame->destroy = coro_semaphore_destroy;
2087 } 3239 }
3240}
2088 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);
2089 frame->check = slf_check_semaphore_down; 3246 frame->check = slf_check_semaphore_down;
2090
2091} 3247}
2092 3248
2093/*****************************************************************************/ 3249static void
2094/* gensub: simple closure generation utility */ 3250slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095
2096#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2097
2098/* create a closure from XS, returns a code reference */
2099/* the arg can be accessed via GENSUB_ARG from the callback */
2100/* the callback must use dXSARGS/XSRETURN */
2101static SV *
2102gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2103{ 3251{
2104 CV *cv = (CV *)newSV (0); 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]);
2105 3257
2106 sv_upgrade ((SV *)cv, SVt_PVCV); 3258 av_push (av, SvREFCNT_inc_NN (cb_cv));
2107 3259
2108 CvANON_on (cv); 3260 if (SvIVX (AvARRAY (av)[0]) > 0)
2109 CvISXSUB_on (cv); 3261 coro_semaphore_adjust (aTHX_ av, 0);
2110 CvXSUB (cv) = xsub;
2111 GENSUB_ARG = arg;
2112 3262
2113 return newRV_noinc ((SV *)cv); 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 }
2114} 3351}
2115 3352
2116/*****************************************************************************/ 3353/*****************************************************************************/
2117/* Coro::AIO */ 3354/* Coro::AIO */
2118 3355
… …
2129 3366
2130static void 3367static void
2131coro_aio_callback (pTHX_ CV *cv) 3368coro_aio_callback (pTHX_ CV *cv)
2132{ 3369{
2133 dXSARGS; 3370 dXSARGS;
2134 AV *state = (AV *)GENSUB_ARG; 3371 AV *state = (AV *)S_GENSUB_ARG;
2135 SV *coro = av_pop (state); 3372 SV *coro = av_pop (state);
2136 SV *data_sv = newSV (sizeof (struct io_state)); 3373 SV *data_sv = newSV (sizeof (struct io_state));
2137 3374
2138 av_extend (state, items); 3375 av_extend (state, items - 1);
2139 3376
2140 sv_upgrade (data_sv, SVt_PV); 3377 sv_upgrade (data_sv, SVt_PV);
2141 SvCUR_set (data_sv, sizeof (struct io_state)); 3378 SvCUR_set (data_sv, sizeof (struct io_state));
2142 SvPOK_only (data_sv); 3379 SvPOK_only (data_sv);
2143 3380
… …
2159 } 3396 }
2160 3397
2161 av_push (state, data_sv); 3398 av_push (state, data_sv);
2162 3399
2163 api_ready (aTHX_ coro); 3400 api_ready (aTHX_ coro);
2164 SvREFCNT_dec (coro); 3401 SvREFCNT_dec_NN (coro);
2165 SvREFCNT_dec ((AV *)state); 3402 SvREFCNT_dec_NN ((AV *)state);
2166} 3403}
2167 3404
2168static int 3405static int
2169slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3406slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2170{ 3407{
2171 AV *state = (AV *)frame->data; 3408 AV *state = (AV *)frame->data;
2172 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
2173 /* one element that is an RV? repeat! */ 3416 /* one element that is an RV? repeat! */
2174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3417 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2175 return 1; 3418 return 1;
2176 3419
2177 /* restore status */ 3420 /* restore status */
2178 { 3421 {
2179 SV *data_sv = av_pop (state); 3422 SV *data_sv = av_pop (state);
… …
2182 errno = data->errorno; 3425 errno = data->errorno;
2183 PL_laststype = data->laststype; 3426 PL_laststype = data->laststype;
2184 PL_laststatval = data->laststatval; 3427 PL_laststatval = data->laststatval;
2185 PL_statcache = data->statcache; 3428 PL_statcache = data->statcache;
2186 3429
2187 SvREFCNT_dec (data_sv); 3430 SvREFCNT_dec_NN (data_sv);
2188 } 3431 }
2189 3432
2190 /* push result values */ 3433 /* push result values */
2191 { 3434 {
2192 dSP; 3435 dSP;
… …
2218 dSP; 3461 dSP;
2219 3462
2220 static SV *prio_cv; 3463 static SV *prio_cv;
2221 static SV *prio_sv; 3464 static SV *prio_sv;
2222 3465
2223 if (expect_false (!prio_cv)) 3466 if (ecb_expect_false (!prio_cv))
2224 { 3467 {
2225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3468 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2226 prio_sv = newSViv (0); 3469 prio_sv = newSViv (0);
2227 } 3470 }
2228 3471
… …
2247 3490
2248 for (i = 0; i < items; ++i) 3491 for (i = 0; i < items; ++i)
2249 PUSHs (arg [i]); 3492 PUSHs (arg [i]);
2250 3493
2251 /* now push the callback closure */ 3494 /* now push the callback closure */
2252 PUSHs (sv_2mortal (gensub (coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3495 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2253 3496
2254 /* now call the AIO function - we assume our request is uncancelable */ 3497 /* now call the AIO function - we assume our request is uncancelable */
2255 PUTBACK; 3498 PUTBACK;
2256 call_sv ((SV *)req, G_VOID | G_DISCARD); 3499 call_sv ((SV *)req, G_VOID | G_DISCARD);
2257 } 3500 }
2258 3501
2259 /* now that the requets is going, we loop toll we have a result */ 3502 /* now that the request is going, we loop till we have a result */
2260 frame->data = (void *)state; 3503 frame->data = (void *)state;
2261 frame->prepare = prepare_schedule; 3504 frame->prepare = prepare_schedule;
2262 frame->check = slf_check_aio_req; 3505 frame->check = slf_check_aio_req;
2263} 3506}
2264 3507
2265static void 3508static void
2266coro_aio_req_xs (pTHX_ CV *cv) 3509coro_aio_req_xs (pTHX_ CV *cv)
2267{ 3510{
2268 dVAR;
2269 dXSARGS; 3511 dXSARGS;
2270 3512
2271 CORO_EXECUTE_SLF_XS (slf_init_aio_req); 3513 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2272 3514
2273 XSRETURN_EMPTY; 3515 XSRETURN_EMPTY;
2274} 3516}
2275 3517
2276/*****************************************************************************/ 3518/*****************************************************************************/
2277 3519
3520#if CORO_CLONE
3521# include "clone.c"
3522#endif
3523
3524/*****************************************************************************/
3525
3526static SV *
3527coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3528{
3529 SV *coro_sv;
3530 struct coro *coro;
3531 MAGIC *mg;
3532 HV *hv;
3533 SV *cb;
3534 int i;
3535
3536 if (argc > 0)
3537 {
3538 cb = s_get_cv_croak (argv [0]);
3539
3540 if (!is_coro)
3541 {
3542 if (CvISXSUB (cb))
3543 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3544
3545 if (!CvROOT (cb))
3546 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3547 }
3548 }
3549
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
3651
2278MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3652MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2279 3653
2280PROTOTYPES: DISABLE 3654PROTOTYPES: DISABLE
2281 3655
2282BOOT: 3656BOOT:
2283{ 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"
2284#ifdef USE_ITHREADS 3660#ifdef USE_ITHREADS
2285# if CORO_PTHREAD 3661# if CORO_PTHREAD
2286 coro_thx = PERL_GET_CONTEXT; 3662 coro_thx = PERL_GET_CONTEXT;
2287# endif 3663# endif
2288#endif 3664#endif
2289 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 ();
2290 3673
2291 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3674 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2292 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3675 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2293 3676
2294 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3677 {
2295 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3678 /*
2296 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 }
2297 3701
2298 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2299 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));
2300 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));
2301 3704
2302 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 */
2303 3708
2304 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3709 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2305 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3710 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
2306 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3711 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
2307 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3712 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
2314 3719
2315 { 3720 {
2316 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3721 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2317 3722
2318 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3723 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2319 hv_store_ent (PL_custom_op_names, slf, 3724 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2320 newSVpv ("coro_slf", 0), 0);
2321 3725
2322 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3726 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2323 hv_store_ent (PL_custom_op_descs, slf, 3727 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2324 newSVpv ("coro schedule like function", 0), 0);
2325 } 3728 }
2326 3729
2327 coroapi.ver = CORO_API_VERSION; 3730 coroapi.ver = CORO_API_VERSION;
2328 coroapi.rev = CORO_API_REVISION; 3731 coroapi.rev = CORO_API_REVISION;
2329 3732
… …
2334 coroapi.prepare_nop = prepare_nop; 3737 coroapi.prepare_nop = prepare_nop;
2335 coroapi.prepare_schedule = prepare_schedule; 3738 coroapi.prepare_schedule = prepare_schedule;
2336 coroapi.prepare_cede = prepare_cede; 3739 coroapi.prepare_cede = prepare_cede;
2337 coroapi.prepare_cede_notself = prepare_cede_notself; 3740 coroapi.prepare_cede_notself = prepare_cede_notself;
2338 3741
2339 { 3742 time_init (aTHX);
2340 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2341 3743
2342 if (!svp) croak ("Time::HiRes is required");
2343 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2344
2345 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2346 }
2347
2348 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
2349} 3750}
2350 3751
2351SV * 3752SV *
2352new (char *klass, ...) 3753new (SV *klass, ...)
3754 ALIAS:
3755 Coro::new = 1
2353 CODE: 3756 CODE:
2354{ 3757 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2355 struct coro *coro; 3758 OUTPUT:
2356 MAGIC *mg;
2357 HV *hv;
2358 int i;
2359
2360 Newz (0, coro, 1, struct coro);
2361 coro->args = newAV ();
2362 coro->flags = CF_NEW;
2363
2364 if (coro_first) coro_first->prev = coro;
2365 coro->next = coro_first;
2366 coro_first = coro;
2367
2368 coro->hv = hv = newHV ();
2369 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2370 mg->mg_flags |= MGf_DUP;
2371 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2372
2373 av_extend (coro->args, items - 1);
2374 for (i = 1; i < items; i++)
2375 av_push (coro->args, newSVsv (ST (i)));
2376}
2377 OUTPUT:
2378 RETVAL 3759 RETVAL
2379
2380void
2381_set_stacklevel (...)
2382 CODE:
2383 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2384 3760
2385void 3761void
2386transfer (...) 3762transfer (...)
2387 PROTOTYPE: $$ 3763 PROTOTYPE: $$
2388 CODE: 3764 CODE:
2389 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3765 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2390 3766
2391bool 3767SV *
2392_destroy (SV *coro_sv) 3768clone (Coro::State coro)
2393 CODE: 3769 CODE:
2394 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}
2395 OUTPUT: 3783 OUTPUT:
2396 RETVAL 3784 RETVAL
2397
2398void
2399_exit (int code)
2400 PROTOTYPE: $
2401 CODE:
2402 _exit (code);
2403 3785
2404int 3786int
2405cctx_stacksize (int new_stacksize = 0) 3787cctx_stacksize (int new_stacksize = 0)
2406 PROTOTYPE: ;$ 3788 PROTOTYPE: ;$
2407 CODE: 3789 CODE:
… …
2443void 3825void
2444list () 3826list ()
2445 PROTOTYPE: 3827 PROTOTYPE:
2446 PPCODE: 3828 PPCODE:
2447{ 3829{
2448 struct coro *coro; 3830 struct coro *coro;
2449 for (coro = coro_first; coro; coro = coro->next) 3831 for (coro = coro_first; coro; coro = coro->next)
2450 if (coro->hv) 3832 if (coro->hv)
2451 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3833 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2452} 3834}
2453 3835
… …
2455call (Coro::State coro, SV *coderef) 3837call (Coro::State coro, SV *coderef)
2456 ALIAS: 3838 ALIAS:
2457 eval = 1 3839 eval = 1
2458 CODE: 3840 CODE:
2459{ 3841{
3842 struct coro *current = SvSTATE_current;
3843
2460 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3844 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
2461 { 3845 {
2462 struct coro temp; 3846 struct CoroSLF slf_save;
2463 3847
2464 if (!(coro->flags & CF_RUNNING)) 3848 if (current != coro)
2465 { 3849 {
2466 PUTBACK; 3850 PUTBACK;
2467 save_perl (aTHX_ &temp); 3851 save_perl (aTHX_ current);
2468 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;
2469 } 3863 }
2470 3864
2471 {
2472 dSP;
2473 ENTER;
2474 SAVETMPS;
2475 PUTBACK;
2476 PUSHSTACK; 3865 PUSHSTACK;
3866
2477 PUSHMARK (SP); 3867 PUSHMARK (SP);
3868 PUTBACK;
2478 3869
2479 if (ix) 3870 if (ix)
2480 eval_sv (coderef, 0); 3871 eval_sv (coderef, 0);
2481 else 3872 else
2482 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3873 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2483 3874
2484 POPSTACK; 3875 POPSTACK;
2485 SPAGAIN; 3876 SPAGAIN;
2486 FREETMPS;
2487 LEAVE;
2488 PUTBACK;
2489 }
2490 3877
2491 if (!(coro->flags & CF_RUNNING)) 3878 if (current != coro)
2492 { 3879 {
3880 PUTBACK;
3881 slf_frame = slf_save;
2493 save_perl (aTHX_ coro); 3882 save_perl (aTHX_ coro);
2494 load_perl (aTHX_ &temp); 3883 load_perl (aTHX_ current);
2495 SPAGAIN; 3884 SPAGAIN;
2496 } 3885 }
2497 } 3886 }
2498} 3887}
2499 3888
… …
2502 PROTOTYPE: $ 3891 PROTOTYPE: $
2503 ALIAS: 3892 ALIAS:
2504 is_ready = CF_READY 3893 is_ready = CF_READY
2505 is_running = CF_RUNNING 3894 is_running = CF_RUNNING
2506 is_new = CF_NEW 3895 is_new = CF_NEW
2507 is_destroyed = CF_DESTROYED 3896 is_destroyed = CF_ZOMBIE
3897 is_zombie = CF_ZOMBIE
3898 is_suspended = CF_SUSPENDED
2508 CODE: 3899 CODE:
2509 RETVAL = boolSV (coro->flags & ix); 3900 RETVAL = boolSV (coro->flags & ix);
2510 OUTPUT: 3901 OUTPUT:
2511 RETVAL 3902 RETVAL
2512 3903
2513void 3904void
2514throw (Coro::State self, SV *throw = &PL_sv_undef) 3905throw (SV *self, SV *exception = &PL_sv_undef)
2515 PROTOTYPE: $;$ 3906 PROTOTYPE: $;$
2516 CODE: 3907 CODE:
2517{ 3908{
3909 struct coro *coro = SvSTATE (self);
2518 struct coro *current = SvSTATE_current; 3910 struct coro *current = SvSTATE_current;
2519 SV **throwp = self == current ? &coro_throw : &self->throw; 3911 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2520 SvREFCNT_dec (*throwp); 3912 SvREFCNT_dec (*exceptionp);
2521 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3913 SvGETMAGIC (exception);
3914 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3915
3916 api_ready (aTHX_ self);
2522} 3917}
2523 3918
2524void 3919void
2525api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3920api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2526 PROTOTYPE: $;$ 3921 PROTOTYPE: $;$
… …
2528 3923
2529SV * 3924SV *
2530has_cctx (Coro::State coro) 3925has_cctx (Coro::State coro)
2531 PROTOTYPE: $ 3926 PROTOTYPE: $
2532 CODE: 3927 CODE:
2533 RETVAL = boolSV (!!coro->cctx); 3928 /* maybe manage the running flag differently */
3929 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2534 OUTPUT: 3930 OUTPUT:
2535 RETVAL 3931 RETVAL
2536 3932
2537int 3933int
2538is_traced (Coro::State coro) 3934is_traced (Coro::State coro)
… …
2558 3954
2559void 3955void
2560force_cctx () 3956force_cctx ()
2561 PROTOTYPE: 3957 PROTOTYPE:
2562 CODE: 3958 CODE:
2563 SvSTATE_current->cctx->idle_sp = 0; 3959 cctx_current->idle_sp = 0;
2564 3960
2565void 3961void
2566swap_defsv (Coro::State self) 3962swap_defsv (Coro::State self)
2567 PROTOTYPE: $ 3963 PROTOTYPE: $
2568 ALIAS: 3964 ALIAS:
… …
2576 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3972 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2577 3973
2578 SV *tmp = *src; *src = *dst; *dst = tmp; 3974 SV *tmp = *src; *src = *dst; *dst = tmp;
2579 } 3975 }
2580 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
2581 4066
2582MODULE = Coro::State PACKAGE = Coro 4067MODULE = Coro::State PACKAGE = Coro
2583 4068
2584BOOT: 4069BOOT:
2585{ 4070{
2586 int i; 4071 if (SVt_LAST > 32)
4072 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2587 4073
2588 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2589 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4074 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2590 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4075 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2591 4076 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2592 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4077 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2593 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 */
2594 4087
2595 coro_stash = gv_stashpv ("Coro", TRUE); 4088 coro_stash = gv_stashpv ("Coro", TRUE);
2596 4089
2597 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4090 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2598 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4091 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2599 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4092 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2600 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4093 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2601 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4094 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2602 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4095 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2603
2604 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2605 coro_ready[i] = newAV ();
2606 4096
2607 { 4097 {
2608 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4098 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2609 4099
2610 coroapi.schedule = api_schedule; 4100 coroapi.schedule = api_schedule;
4101 coroapi.schedule_to = api_schedule_to;
2611 coroapi.cede = api_cede; 4102 coroapi.cede = api_cede;
2612 coroapi.cede_notself = api_cede_notself; 4103 coroapi.cede_notself = api_cede_notself;
2613 coroapi.ready = api_ready; 4104 coroapi.ready = api_ready;
2614 coroapi.is_ready = api_is_ready; 4105 coroapi.is_ready = api_is_ready;
2615 coroapi.nready = coro_nready; 4106 coroapi.nready = coro_nready;
2616 coroapi.current = coro_current; 4107 coroapi.current = coro_current;
2617 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
2618 GCoroAPI = &coroapi; 4113 /*GCoroAPI = &coroapi;*/
2619 sv_setiv (sv, (IV)&coroapi); 4114 sv_setiv (sv, PTR2IV (&coroapi));
2620 SvREADONLY_on (sv); 4115 SvREADONLY_on (sv);
2621 } 4116 }
2622} 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
2623 4157
2624void 4158void
2625schedule (...) 4159schedule (...)
2626 CODE: 4160 CODE:
2627 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4161 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2628 4162
2629void 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);
4172
4173void
2630cede (...) 4174cede (...)
2631 CODE: 4175 CODE:
2632 CORO_EXECUTE_SLF_XS (slf_init_cede); 4176 CORO_EXECUTE_SLF_XS (slf_init_cede);
2633 4177
2634void 4178void
… …
2638 4182
2639void 4183void
2640_set_current (SV *current) 4184_set_current (SV *current)
2641 PROTOTYPE: $ 4185 PROTOTYPE: $
2642 CODE: 4186 CODE:
2643 SvREFCNT_dec (SvRV (coro_current)); 4187 SvREFCNT_dec_NN (SvRV (coro_current));
2644 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4188 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2645 4189
2646void 4190void
2647_set_readyhook (SV *hook) 4191_set_readyhook (SV *hook)
2648 PROTOTYPE: $ 4192 PROTOTYPE: $
2649 CODE: 4193 CODE:
2650 SvREFCNT_dec (coro_readyhook); 4194 SvREFCNT_dec (coro_readyhook);
4195 SvGETMAGIC (hook);
4196 if (SvOK (hook))
4197 {
2651 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 }
2652 4206
2653int 4207int
2654prio (Coro::State coro, int newprio = 0) 4208prio (Coro::State coro, int newprio = 0)
2655 PROTOTYPE: $;$ 4209 PROTOTYPE: $;$
2656 ALIAS: 4210 ALIAS:
… …
2662 if (items > 1) 4216 if (items > 1)
2663 { 4217 {
2664 if (ix) 4218 if (ix)
2665 newprio = coro->prio - newprio; 4219 newprio = coro->prio - newprio;
2666 4220
2667 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4221 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2668 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4222 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2669 4223
2670 coro->prio = newprio; 4224 coro->prio = newprio;
2671 } 4225 }
2672} 4226}
2673 OUTPUT: 4227 OUTPUT:
… …
2687 CODE: 4241 CODE:
2688 RETVAL = coro_nready; 4242 RETVAL = coro_nready;
2689 OUTPUT: 4243 OUTPUT:
2690 RETVAL 4244 RETVAL
2691 4245
2692# for async_pool speedup
2693void 4246void
2694_pool_1 (SV *cb) 4247suspend (Coro::State self)
4248 PROTOTYPE: $
2695 CODE: 4249 CODE:
2696{ 4250 self->flags |= CF_SUSPENDED;
2697 HV *hv = (HV *)SvRV (coro_current);
2698 struct coro *coro = SvSTATE_hv ((SV *)hv);
2699 AV *defav = GvAV (PL_defgv);
2700 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2701 AV *invoke_av;
2702 int i, len;
2703 4251
2704 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)
2705 { 4278 {
2706 SV *old = PL_diehook; 4279 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2707 PL_diehook = 0; 4280 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2708 SvREFCNT_dec (old); 4281 SvREFCNT_dec_NN (sv);
2709 croak ("\3async_pool terminate\2\n");
2710 } 4282 }
2711 4283
2712 SvREFCNT_dec (coro->saved_deffh);
2713 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2714
2715 hv_store (hv, "desc", sizeof ("desc") - 1,
2716 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2717
2718 invoke_av = (AV *)SvRV (invoke);
2719 len = av_len (invoke_av);
2720
2721 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2722
2723 if (len > 0)
2724 { 4284 {
2725 av_fill (defav, len - 1); 4285 struct coro *coro = SvSTATE_hv (hv);
2726 for (i = 0; i < len; ++i) 4286
2727 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;
2728 } 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);
2729} 4299}
4300
4301SV *
4302rouse_cb ()
4303 PROTOTYPE:
4304 CODE:
4305 RETVAL = coro_new_rouse_cb (aTHX);
4306 OUTPUT:
4307 RETVAL
2730 4308
2731void 4309void
2732_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: &
2733 CODE: 4320 CODE:
2734{ 4321{
2735 HV *hv = (HV *)SvRV (coro_current);
2736 struct coro *coro = SvSTATE_hv ((SV *)hv); 4322 struct coro *coro = SvSTATE_current;
4323 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2737 4324
2738 sv_setsv (cb, &PL_sv_undef); 4325 block = s_get_cv_croak (block);
2739 4326
2740 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4327 if (!*avp)
2741 coro->saved_deffh = 0; 4328 *avp = newAV ();
2742 4329
2743 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4330 av_push (*avp, SvREFCNT_inc (block));
2744 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2745 {
2746 SV *old = PL_diehook;
2747 PL_diehook = 0;
2748 SvREFCNT_dec (old);
2749 croak ("\3async_pool terminate\2\n");
2750 }
2751 4331
2752 av_clear (GvAV (PL_defgv)); 4332 if (!ix)
2753 hv_store (hv, "desc", sizeof ("desc") - 1, 4333 on_enterleave_call (aTHX_ block);
2754 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2755 4334
2756 coro->prio = 0; 4335 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2757 4336 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2758 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4337 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2759 api_trace (aTHX_ coro_current, 0);
2760
2761 av_push (av_async_pool, newSVsv (coro_current));
2762} 4338}
2763 4339
2764 4340
2765MODULE = Coro::State PACKAGE = PerlIO::cede 4341MODULE = Coro::State PACKAGE = PerlIO::cede
2766 4342
… …
2769 4345
2770 4346
2771MODULE = Coro::State PACKAGE = Coro::Semaphore 4347MODULE = Coro::State PACKAGE = Coro::Semaphore
2772 4348
2773SV * 4349SV *
2774new (SV *klass, SV *count_ = 0) 4350new (SV *klass, SV *count = 0)
2775 CODE: 4351 CODE:
2776{ 4352{
2777 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4353 int semcnt = 1;
2778 AV *av = newAV (); 4354
2779 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4355 if (count)
2780 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 );
2781} 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);
2782 OUTPUT: 4376 OUTPUT:
2783 RETVAL 4377 RETVAL
2784 4378
2785SV * 4379SV *
2786count (SV *self) 4380count (SV *self)
… …
2788 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4382 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2789 OUTPUT: 4383 OUTPUT:
2790 RETVAL 4384 RETVAL
2791 4385
2792void 4386void
2793up (SV *self, int adjust = 1) 4387up (SV *self)
2794 ALIAS:
2795 adjust = 1
2796 CODE: 4388 CODE:
2797 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4389 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2798 4390
2799void 4391void
2800down (SV *self) 4392adjust (SV *self, int adjust)
4393 CODE:
4394 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4395
4396void
4397down (...)
2801 CODE: 4398 CODE:
2802 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4399 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4400
4401void
4402wait (...)
4403 CODE:
4404 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2803 4405
2804void 4406void
2805try (SV *self) 4407try (SV *self)
2806 PPCODE: 4408 PPCODE:
2807{ 4409{
… …
2819 XSRETURN_NO; 4421 XSRETURN_NO;
2820} 4422}
2821 4423
2822void 4424void
2823waiters (SV *self) 4425waiters (SV *self)
2824 CODE: 4426 PPCODE:
2825{ 4427{
2826 AV *av = (AV *)SvRV (self); 4428 AV *av = (AV *)SvRV (self);
4429 int wcount = AvFILLp (av) + 1 - 1;
2827 4430
2828 if (GIMME_V == G_SCALAR) 4431 if (GIMME_V == G_SCALAR)
2829 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4432 XPUSHs (sv_2mortal (newSViv (wcount)));
2830 else 4433 else
2831 { 4434 {
2832 int i; 4435 int i;
2833 EXTEND (SP, AvFILLp (av) + 1 - 1); 4436 EXTEND (SP, wcount);
2834 for (i = 1; i <= AvFILLp (av); ++i) 4437 for (i = 1; i <= wcount; ++i)
2835 PUSHs (newSVsv (AvARRAY (av)[i])); 4438 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2836 } 4439 }
2837} 4440}
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
2838 4501
2839 4502
2840MODULE = Coro::State PACKAGE = Coro::AnyEvent 4503MODULE = Coro::State PACKAGE = Coro::AnyEvent
2841 4504
2842BOOT: 4505BOOT:
… …
2844 4507
2845void 4508void
2846_schedule (...) 4509_schedule (...)
2847 CODE: 4510 CODE:
2848{ 4511{
2849 static int incede; 4512 static int incede;
2850 4513
2851 api_cede_notself (aTHX); 4514 api_cede_notself (aTHX);
2852 4515
2853 ++incede; 4516 ++incede;
2854 while (coro_nready >= incede && api_cede (aTHX)) 4517 while (coro_nready >= incede && api_cede (aTHX))
… …
2857 sv_setsv (sv_activity, &PL_sv_undef); 4520 sv_setsv (sv_activity, &PL_sv_undef);
2858 if (coro_nready >= incede) 4521 if (coro_nready >= incede)
2859 { 4522 {
2860 PUSHMARK (SP); 4523 PUSHMARK (SP);
2861 PUTBACK; 4524 PUTBACK;
2862 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4525 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2863 SPAGAIN;
2864 } 4526 }
2865 4527
2866 --incede; 4528 --incede;
2867} 4529}
2868 4530
… …
2871 4533
2872void 4534void
2873_register (char *target, char *proto, SV *req) 4535_register (char *target, char *proto, SV *req)
2874 CODE: 4536 CODE:
2875{ 4537{
2876 HV *st; 4538 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp; 4539 /* newXSproto doesn't return the CV on 5.8 */
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 CV *slf_cv = newXSproto (target, coro_aio_req_xs, __FILE__, proto); 4540 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4541 sv_setpv ((SV *)slf_cv, proto);
2880 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4542 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2881} 4543}
2882 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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