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Comparing Coro/Coro/State.xs (file contents):
Revision 1.278 by root, Sun Nov 16 07:09:28 2008 UTC vs.
Revision 1.480 by root, Fri Jun 25 01:13:21 2021 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
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 126# if CORO_PTHREAD
152static void *coro_thx; 127static void *coro_thx;
153# endif 128# endif
129#endif
154 130
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]
155#else 149#else
156 150# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
157# define LOCK (void)0
158# define UNLOCK (void)0
159
160#endif 151#endif
161 152
162# undef LOCK 153/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
163# define LOCK (void)0 154#if 0
164# undef UNLOCK 155# undef NDEBUG
165# define UNLOCK (void)0 156# include <assert.h>
166 157#endif
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 158
177static 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);
178 166
179static U32 cctx_gen; 167static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 171static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177static SV *sv_idle; /* $Coro::idle */
187 178
188static GV *irsgv; /* $/ */ 179static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 180static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 181static SV *rv_diehook;
191static SV *rv_warnhook; 182static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */
193 183
194/* async_pool helper stuff */ 184/* async_pool helper stuff */
195static SV *sv_pool_rss; 185static SV *sv_pool_rss;
196static SV *sv_pool_size; 186static SV *sv_pool_size;
187static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
189static SV *sv_Coro; /* class string */
190static CV *cv_pool_handler;
198 191
199/* Coro::AnyEvent */ 192/* Coro::AnyEvent */
200static SV *sv_activity; 193static SV *sv_activity;
201 194
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
202static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
204 203
205enum { 204enum
205{
206 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 209 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215typedef struct coro_cctx 215typedef struct coro_cctx
216{ 216{
217 struct coro_cctx *next; 217 struct coro_cctx *next;
218 218
219 /* the stack */ 219 /* the stack */
220 void *sptr; 220 struct coro_stack stack;
221 size_t ssize;
222 221
223 /* cpu state */ 222 /* cpu state */
224 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
225 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
226 JMPENV *top_env; 227 JMPENV *top_env;
227 coro_context cctx; 228 coro_context cctx;
228 229
229 U32 gen; 230 U32 gen;
230#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
231 int valgrind_id; 232 int valgrind_id;
232#endif 233#endif
233 unsigned char flags; 234 unsigned char flags;
234} coro_cctx; 235} coro_cctx;
235 236
237static coro_cctx *cctx_current; /* the currently running cctx */
238
239/*****************************************************************************/
240
241static MGVTBL coro_state_vtbl;
242
236enum { 243enum
244{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 245 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 246 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 247 CF_NEW = 0x0004, /* has never been switched to */
240 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) */
241}; 251};
242 252
243/* 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 */
244typedef struct 254typedef struct
245{ 255{
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 256 #define VARx(name,expr,type) type name;
251# include "state.h" 257 #include "state.h"
252#undef VAR
253} perl_slots; 258} perl_slots;
254 259
260/* how many context stack entries do we need for perl_slots */
255#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))
256 262
257/* this is a structure representing a perl-level coroutine */ 263/* this is a structure representing a perl-level coroutine */
258struct coro { 264struct coro
265{
259 /* the C coroutine allocated to this perl coroutine, if any */ 266 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 267 coro_cctx *cctx;
261 268
262 /* process data */ 269 /* ready queue */
270 struct coro *next_ready;
271
272 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 273 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 274 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 275 perl_slots *slot; /* basically the saved sp */
266 276
277 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 278 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 279 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 280 HV *hv; /* the perl hash associated with this coro, if any */
271 281
272 /* statistics */ 282 /* statistics */
273 int usecount; /* number of transfers to this coro */ 283 int usecount; /* number of transfers to this coro */
274 284
275 /* coro process data */ 285 /* coro process data */
276 int prio; 286 int prio;
277 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 */
278 291
279 /* async_pool */ 292 /* async_pool */
280 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;
281 306
282 /* linked list */ 307 /* linked list */
283 struct coro *next, *prev; 308 struct coro *next, *prev;
284}; 309};
285 310
286typedef struct coro *Coro__State; 311typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 312typedef struct coro *Coro__State_or_hashref;
288 313
314/* the following variables are effectively part of the perl context */
315/* and get copied between struct coro and these variables */
316/* the main reason we don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 317static struct CoroSLF slf_frame; /* the current slf frame */
290 318
291/** Coro ********************************************************************/ 319/** Coro ********************************************************************/
292 320
293#define PRIO_MAX 3 321#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 322#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 323#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 324#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 325#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 326#define CORO_PRIO_MIN -4
299 327
300/* for Coro.pm */ 328/* for Coro.pm */
301static SV *coro_current; 329static SV *coro_current;
302static SV *coro_readyhook; 330static SV *coro_readyhook;
303static 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;
304static struct coro *coro_first; 333static struct coro *coro_first;
305#define coro_nready coroapi.nready 334#define coro_nready coroapi.nready
306 335
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
307/** lowlevel stuff **********************************************************/ 431/** lowlevel stuff **********************************************************/
308 432
309static SV * 433static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 434coro_get_sv (pTHX_ const char *name, int create)
311{ 435{
312#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
313 /* 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 */
314 get_sv (name, create); 438 get_sv (name, create);
315#endif 439#endif
316 return get_sv (name, create); 440 return get_sv (name, create);
317} 441}
318 442
319static AV * 443static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 444coro_get_av (pTHX_ const char *name, int create)
321{ 445{
322#if PERL_VERSION_ATLEAST (5,10,0) 446#if PERL_VERSION_ATLEAST (5,10,0)
323 /* 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 */
324 get_av (name, create); 448 get_av (name, create);
325#endif 449#endif
326 return get_av (name, create); 450 return get_av (name, create);
327} 451}
328 452
329static HV * 453static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 454coro_get_hv (pTHX_ const char *name, int create)
331{ 455{
332#if PERL_VERSION_ATLEAST (5,10,0) 456#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 458 get_hv (name, create);
335#endif 459#endif
336 return get_hv (name, create); 460 return get_hv (name, create);
337} 461}
338 462
339static 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 *
340coro_clone_padlist (pTHX_ CV *cv) 569coro_derive_padlist (pTHX_ CV *cv)
341{ 570{
342 AV *padlist = CvPADLIST (cv); 571 PADLIST *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 572 PADLIST *newpadlist;
573 PADNAMELIST *padnames;
574 PAD *newpad;
575 PADOFFSET off = PadlistMAX (padlist) + 1;
344 576
345 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. */
346 AvREAL_off (newpadlist); 605 AvREAL_off (newpadlist);
347#if PERL_VERSION_ATLEAST (5,10,0)
348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
349#else
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 606#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist);
354 607
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 608 /* Already extended to 2 elements by newPADLIST. */
356 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;
357 616
358 return newpadlist; 617 return newpadlist;
359} 618}
360 619
361static void 620ecb_inline void
362free_padlist (pTHX_ AV *padlist) 621free_padlist (pTHX_ PADLIST *padlist)
363{ 622{
364 /* may be during global destruction */ 623 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 624 if (!IN_DESTRUCT)
366 { 625 {
367 I32 i = AvFILLp (padlist); 626 I32 i = PadlistMAX (padlist);
368 while (i >= 0) 627
628 while (i > 0) /* special-case index 0 */
369 { 629 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 630 /* we try to be extra-careful here */
631 PAD *pad = PadlistARRAY (padlist)[i--];
632
371 if (svp) 633 if (pad)
372 { 634 {
373 SV *sv; 635 I32 j = PadMAX (pad);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 636
637 while (j >= 0)
375 SvREFCNT_dec (sv); 638 SvREFCNT_dec (PadARRAY (pad)[j--]);
376 639
640 PadMAX (pad) = -1;
377 SvREFCNT_dec (*svp); 641 SvREFCNT_dec (pad);
378 } 642 }
379 } 643 }
380 644
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);
381 SvREFCNT_dec ((SV*)padlist); 653 SvREFCNT_dec ((SV*)padlist);
654#endif
382 } 655 }
383} 656}
384 657
385static int 658static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 659coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 660{
388 AV *padlist; 661 PADLIST *padlist;
389 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;
390 664
391 /* casting is fun. */ 665 /* perl manages to free our internal AV and _then_ call us */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 666 if (IN_DESTRUCT)
667 return 0;
668
669 while (len--)
393 free_padlist (aTHX_ padlist); 670 free_padlist (aTHX_ padlists[len]);
394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 671
397 return 0; 672 return 0;
398} 673}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 674
403static MGVTBL coro_cv_vtbl = { 675static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 676 0, 0, 0, 0,
405 coro_cv_free 677 coro_cv_free
406}; 678};
407 679
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 680/* the next two functions merely cache the padlists */
445static void 681ecb_inline void
446get_padlist (pTHX_ CV *cv) 682get_padlist (pTHX_ CV *cv)
447{ 683{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 684 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 685 size_t *lenp;
450 686
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 687 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 688 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
453 else 689 else
454 { 690 {
455#if CORO_PREFER_PERL_FUNCTIONS 691#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 692 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 693 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 694 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 695 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 696 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 697 SvREFCNT_dec (cp);
462#else 698#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 699 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 700#endif
465 } 701 }
466} 702}
467 703
468static void 704ecb_inline void
469put_padlist (pTHX_ CV *cv) 705put_padlist (pTHX_ CV *cv)
470{ 706{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 707 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av;
473 708
474 if (expect_false (!mg)) 709 if (ecb_expect_false (!mg))
710 {
475 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);
476 719
477 av = (AV *)mg->mg_obj; 720 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
478
479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1);
481
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 721}
484 722
485/** 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);
486 796
487static void 797static void
488load_perl (pTHX_ Coro__State c) 798load_perl (pTHX_ Coro__State c)
489{ 799{
490 perl_slots *slot = c->slot; 800 perl_slots *slot = c->slot;
491 c->slot = 0; 801 c->slot = 0;
492 802
493 PL_mainstack = c->mainstack; 803 PL_mainstack = c->mainstack;
494 804
495 GvSV (PL_defgv) = slot->defsv; 805#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 806 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 807#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 808 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 809 #include "state.h"
502 #undef VAR 810#endif
503 811
504 { 812 {
505 dSP; 813 dSP;
506 814
507 CV *cv; 815 CV *cv;
508 816
509 /* now do the ugly restore mess */ 817 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 818 while (ecb_expect_true (cv = (CV *)POPs))
511 { 819 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 820 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 821 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 822 CvPADLIST (cv) = (PADLIST *)POPs;
515 } 823 }
516 824
517 PUTBACK; 825 PUTBACK;
518 } 826 }
519 827
520 slf_frame = c->slf_frame; 828 slf_frame = c->slf_frame;
829 CORO_THROW = c->except;
830
831 if (ecb_expect_false (enable_times))
832 {
833 if (ecb_expect_false (!times_valid))
834 coro_times_update ();
835
836 coro_times_sub (c);
837 }
838
839 if (ecb_expect_false (c->on_enter))
840 {
841 int i;
842
843 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
845 }
846
847 if (ecb_expect_false (c->on_enter_xs))
848 {
849 int i;
850
851 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
852 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
853 }
854
855 SWAP_SVS_ENTER (c);
521} 856}
522 857
523static void 858static void
524save_perl (pTHX_ Coro__State c) 859save_perl (pTHX_ Coro__State c)
525{ 860{
861 SWAP_SVS_LEAVE (c);
862
863 if (ecb_expect_false (c->on_leave_xs))
864 {
865 int i;
866
867 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
868 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
869 }
870
871 if (ecb_expect_false (c->on_leave))
872 {
873 int i;
874
875 for (i = AvFILLp (c->on_leave); i >= 0; --i)
876 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
877 }
878
879 times_valid = 0;
880
881 if (ecb_expect_false (enable_times))
882 {
883 coro_times_update (); times_valid = 1;
884 coro_times_add (c);
885 }
886
887 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 888 c->slf_frame = slf_frame;
527 889
528 { 890 {
529 dSP; 891 dSP;
530 I32 cxix = cxstack_ix; 892 I32 cxix = cxstack_ix;
… …
538 900
539 XPUSHs (Nullsv); 901 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 902 /* this loop was inspired by pp_caller */
541 for (;;) 903 for (;;)
542 { 904 {
543 while (expect_true (cxix >= 0)) 905 while (ecb_expect_true (cxix >= 0))
544 { 906 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 907 PERL_CONTEXT *cx = &ccstk[cxix--];
546 908
547 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))
548 { 910 {
549 CV *cv = cx->blk_sub.cv; 911 CV *cv = cx->blk_sub.cv;
550 912
551 if (expect_true (CvDEPTH (cv))) 913 if (ecb_expect_true (CvDEPTH (cv)))
552 { 914 {
553 EXTEND (SP, 3); 915 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 916 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 917 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 918 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 921 get_padlist (aTHX_ cv);
560 } 922 }
561 } 923 }
562 } 924 }
563 925
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 926 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 927 break;
566 928
567 top_si = top_si->si_prev; 929 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 930 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 931 cxix = top_si->si_cxix;
… …
571 933
572 PUTBACK; 934 PUTBACK;
573 } 935 }
574 936
575 /* allocate some space on the context stack for our purposes */ 937 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 938 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
580 { 939 {
581 int i; 940 unsigned int i;
941
582 for (i = 3; i < SLOT_COUNT; ++i) 942 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 943 CXINC;
584 } 944
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 945 cxstack_ix -= SLOT_COUNT; /* undo allocation */
946 }
586 947
587 c->mainstack = PL_mainstack; 948 c->mainstack = PL_mainstack;
588 949
589 { 950 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 951 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 952
592 slot->defav = GvAV (PL_defgv); 953#if CORO_JIT
593 slot->defsv = DEFSV; 954 save_perl_slots (slot);
594 slot->errsv = ERRSV; 955#else
595 slot->irsgv = GvSV (irsgv);
596
597 #define VAR(name,type) slot->name = PL_ ## name; 956 #define VARx(name,expr,type) slot->name = expr;
598 # include "state.h" 957 #include "state.h"
599 #undef VAR 958#endif
600 } 959 }
601} 960}
602 961
603/* 962/*
604 * allocate various perl stacks. This is almost an exact copy 963 * allocate various perl stacks. This is almost an exact copy
605 * of perl.c:init_stacks, except that it uses less memory 964 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 965 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 966 * not usually need a lot of stackspace.
608 */ 967 */
609#if CORO_PREFER_PERL_FUNCTIONS 968#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 969# define coro_init_stacks(thx) init_stacks ()
611#else 970#else
612static void 971static void
613coro_init_stacks (pTHX) 972coro_init_stacks (pTHX)
614{ 973{
615 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() */
616 PL_curstackinfo->si_type = PERLSI_MAIN; 975 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 976 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 977 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 978
620 PL_stack_base = AvARRAY(PL_curstack); 979 PL_stack_base = AvARRAY(PL_curstack);
… …
635#endif 994#endif
636 995
637 New(54,PL_scopestack,8,I32); 996 New(54,PL_scopestack,8,I32);
638 PL_scopestack_ix = 0; 997 PL_scopestack_ix = 0;
639 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
640 1002
641 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
642 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
643 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
644 1011
645#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
646 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
647 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
648 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
672 } 1039 }
673 1040
674 Safefree (PL_tmps_stack); 1041 Safefree (PL_tmps_stack);
675 Safefree (PL_markstack); 1042 Safefree (PL_markstack);
676 Safefree (PL_scopestack); 1043 Safefree (PL_scopestack);
1044#if HAS_SCOPESTACK_NAME
1045 Safefree (PL_scopestack_name);
1046#endif
677 Safefree (PL_savestack); 1047 Safefree (PL_savestack);
678#if !PERL_VERSION_ATLEAST (5,10,0) 1048#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 1049 Safefree (PL_retstack);
680#endif 1050#endif
681} 1051}
682 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
683static size_t 1062static size_t
684coro_rss (pTHX_ struct coro *coro) 1063coro_rss (pTHX_ struct coro *coro)
685{ 1064{
686 size_t rss = sizeof (*coro); 1065 size_t rss = sizeof (*coro);
687 1066
688 if (coro->mainstack) 1067 if (coro->mainstack)
689 { 1068 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 1069 if (coro->flags & CF_RUNNING)
694 { 1070 {
695 slot = &tmp_slot; 1071 #define SYM(sym) PL_ ## sym
696 1072 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 1073 #undef SYM
700 } 1074 }
701 else 1075 else
702 slot = coro->slot;
703
704 if (slot)
705 { 1076 {
706 rss += sizeof (slot->curstackinfo); 1077 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1078 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1079 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 1080 }
718 } 1081 }
719 1082
720 return rss; 1083 return rss;
721} 1084}
722 1085
723/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
724
725static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
726static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
727static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
728 1087
729/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
730#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
731#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
732 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
733 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
734#endif 1093#endif
735 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
736/* 1123/*
737 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
738 * 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
739 * 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),
740 * readback here. 1127 * we just provide our own readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 1128 */
745static int 1129static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 1131{
748 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;
749 1135
750 if (*s == '_') 1136 SV *ssv;
751 {
752 SV **svp = 0;
753 1137
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756
757 if (svp) 1138 if (!*svp)
758 { 1139 ssv = &PL_sv_undef;
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
760 return 0; 1141 ssv = sv_2mortal (newRV_inc (*svp));
761 } 1142 else
762 } 1143 ssv = *svp;
763 1144
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1145 sv_setsv (sv, ssv);
1146 return 0;
765} 1147}
766 1148
767static int 1149static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 1151{
770 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;
771 1155
772 if (*s == '_')
773 {
774 SV **svp = 0;
775
776 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778
779 if (svp)
780 {
781 SV *old = *svp; 1156 SV *old = *svp;
782 *svp = 0; 1157 *svp = 0;
783 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
784 return 0; 1159 return 0;
785 }
786 }
787
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1160}
790 1161
791static int 1162static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1164{
794 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;
795 1168
796 if (*s == '_')
797 {
798 SV **svp = 0;
799
800 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802
803 if (svp)
804 {
805 SV *old = *svp; 1169 SV *old = *svp;
806 *svp = newSVsv (sv); 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
808 return 0; 1172 return 0;
809 }
810 }
811
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 1173}
814 1174
815static void 1175static void
816prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 1177{
… …
823slf_check_nop (pTHX_ struct CoroSLF *frame) 1183slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1184{
825 return 0; 1185 return 0;
826} 1186}
827 1187
828static void 1188static int
1189slf_check_repeat (pTHX_ struct CoroSLF *frame)
1190{
1191 return 1;
1192}
1193
1194/** coroutine stack handling ************************************************/
1195
1196static UNOP init_perl_op;
1197
1198ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
830{ 1200{
831 /* 1201 /*
832 * emulate part of the perl startup here. 1202 * emulate part of the perl startup here.
833 */ 1203 */
834 coro_init_stacks (aTHX); 1204 coro_init_stacks (aTHX);
835 1205
836 PL_runops = RUNOPS_DEFAULT; 1206 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1207 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1208 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1209 PL_comppad = 0;
1210 PL_comppad_name = 0;
1211 PL_comppad_name_fill = 0;
1212 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1213 PL_curpm = 0;
841 PL_curpad = 0; 1214 PL_curpad = 0;
842 PL_localizing = 0; 1215 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1216 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1217#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1218 PL_parser = 0;
847#endif 1219#endif
1220 PL_hints = 0;
848 1221
849 /* recreate the die/warn hooks */ 1222 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1223 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1224 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1225
853 GvSV (PL_defgv) = newSV (0); 1226 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1227 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1228 GvSV (PL_errgv) = newSV (0);
856 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
857 PL_rs = newSVsv (GvSV (irsgv)); 1234 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1235 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1236
860 { 1237 {
861 dSP; 1238 dSP;
862 UNOP myop; 1239 UNOP myop;
863 1240
864 Zero (&myop, 1, UNOP); 1241 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
1243 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
867 1245
868 PUSHMARK (SP); 1246 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1247 XPUSHs ((SV *)coro->startcv);
870 PUTBACK; 1248 PUTBACK;
871 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1251 }
875 1252
876 /* 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
877 * 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.
878 */ 1255 */
879 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 */
880 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 */
881} 1258 slf_frame.destroy = 0;
882 1259
1260 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1261 init_perl_op.op_next = PL_op;
1262 init_perl_op.op_type = OP_ENTERSUB;
1263 init_perl_op.op_ppaddr = pp_slf;
1264 /* no flags etc. required, as an init function won't be called */
1265
1266 PL_op = (OP *)&init_perl_op;
1267
1268 /* copy throw, in case it was set before init_perl */
1269 CORO_THROW = coro->except;
1270
1271 SWAP_SVS_ENTER (coro);
1272
1273 if (ecb_expect_false (enable_times))
1274 {
1275 coro_times_update ();
1276 coro_times_sub (coro);
1277 }
1278}
1279
883static void 1280static void
884coro_destruct (pTHX_ struct coro *coro) 1281coro_unwind_stacks (pTHX)
885{ 1282{
886 if (!IN_DESTRUCT) 1283 if (!IN_DESTRUCT)
887 { 1284 {
888 /* restore all saved variables and stuff */ 1285 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1286 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1294 POPSTACK_TO (PL_mainstack);
898 1295
899 /* unwind main stack */ 1296 /* unwind main stack */
900 dounwind (-1); 1297 dounwind (-1);
901 } 1298 }
1299}
902 1300
903 SvREFCNT_dec (GvSV (PL_defgv)); 1301static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1302destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1303{
906 SvREFCNT_dec (PL_defoutgv); 1304 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1305
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 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
913 SvREFCNT_dec (coro->saved_deffh); 1349 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1350 SvREFCNT_dec (coro->rouse_cb);
915 1351 SvREFCNT_dec (coro->invoke_cb);
916 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 }
917} 1356}
918 1357
919INLINE void 1358ecb_inline void
920free_coro_mortal (pTHX) 1359free_coro_mortal (pTHX)
921{ 1360{
922 if (expect_true (coro_mortal)) 1361 if (ecb_expect_true (coro_mortal))
923 { 1362 {
924 SvREFCNT_dec (coro_mortal); 1363 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1364 coro_mortal = 0;
926 } 1365 }
927} 1366}
928 1367
929static int 1368static int
930runops_trace (pTHX) 1369runops_trace (pTHX)
931{ 1370{
932 COP *oldcop = 0; 1371 COP *oldcop = 0;
933 int oldcxix = -2; 1372 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1373
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1374 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1375 {
939 PERL_ASYNC_CHECK (); 1376 PERL_ASYNC_CHECK ();
940 1377
941 if (cctx->flags & CC_TRACE_ALL) 1378 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1379 {
943 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)
944 { 1381 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1382 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1383 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1384 AV *av = newAV (); /* return values */
948 SV **cb; 1385 SV **cb;
… …
963 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
964 1401
965 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
966 ENTER; 1403 ENTER;
967 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
968 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
969 PUSHMARK (SP);
970 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
971 PUSHs (fullname); 1408 PUSHs (fullname);
972 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
973 PUTBACK; 1410 PUTBACK;
974 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);
… …
985 1422
986 if (PL_curcop != &PL_compiling) 1423 if (PL_curcop != &PL_compiling)
987 { 1424 {
988 SV **cb; 1425 SV **cb;
989 1426
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1427 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
991 { 1428 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1429 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1430
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1431 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1432 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1433 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1434 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1435 SV *fullname = sv_2mortal (newSV (0));
1000 1436
1001 if (isGV (gv)) 1437 if (isGV (gv))
1002 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
1003 1439
1004 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
1005 ENTER; 1441 ENTER;
1006 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
1007 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
1008 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1446 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1448 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1451 SPAGAIN;
1016 FREETMPS; 1452 FREETMPS;
… …
1019 } 1455 }
1020 1456
1021 oldcxix = cxstack_ix; 1457 oldcxix = cxstack_ix;
1022 } 1458 }
1023 1459
1024 if (cctx->flags & CC_TRACE_LINE) 1460 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1461 {
1026 dSP; 1462 dSP;
1027 1463
1028 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1465 ENTER;
1030 SAVETMPS; 1466 SAVETMPS;
1031 EXTEND (SP, 3);
1032 PL_runops = RUNOPS_DEFAULT;
1033 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1034 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1035 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1036 PUTBACK; 1471 PUTBACK;
1037 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);
1038 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);
… …
1048 1483
1049 TAINT_NOT; 1484 TAINT_NOT;
1050 return 0; 1485 return 0;
1051} 1486}
1052 1487
1488static struct CoroSLF cctx_ssl_frame;
1489
1053static void 1490static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1491slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1492{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1493 ta->prev = 0;
1058} 1494}
1059 1495
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1496static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1497slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
1064static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1498{
1067 dSP; 1499 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 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{
1070 PL_top_env = &PL_start_env; 1508 PL_top_env = &PL_start_env;
1071 1509
1072 if (cctx->flags & CC_TRACE) 1510 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1511 PL_runops = runops_trace;
1074 1512
1075 Zero (&myop, 1, UNOP); 1513 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1514 * that can lead to creation of a new cctx */
1077 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));
1078 1517
1079 PUSHMARK (SP); 1518 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1519 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1520
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1521 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1522 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1523}
1088 1524
1089/* 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 */
1090INLINE void 1526ecb_inline void
1091transfer_tail (pTHX) 1527transfer_tail (pTHX)
1092{ 1528{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1529 free_coro_mortal (aTHX);
1098 UNLOCK; 1530}
1099 1531
1100 if (expect_false (next->throw)) 1532/* try to exit the same way perl's main function would do */
1101 { 1533/* we do not bother resetting the environment or other things *7
1102 SV *exception = sv_2mortal (next->throw); 1534/* that are not, uhm, essential */
1103 1535/* this obviously also doesn't work when perl is embedded */
1104 next->throw = 0; 1536static void ecb_noinline ecb_cold
1105 sv_setsv (ERRSV, exception); 1537perlish_exit (pTHX)
1106 croak (0); 1538{
1107 } 1539 int exitstatus = perl_destruct (PL_curinterp);
1540 perl_free (PL_curinterp);
1541 exit (exitstatus);
1108} 1542}
1109 1543
1110/* 1544/*
1111 * this is a _very_ stripped down perl interpreter ;) 1545 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1546 */
… …
1124 /* normally we would need to skip the entersub here */ 1558 /* normally we would need to skip the entersub here */
1125 /* 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 */
1126 /* PL_nop = PL_nop->op_next */ 1560 /* PL_nop = PL_nop->op_next */
1127 1561
1128 /* inject a fake subroutine call to cctx_init */ 1562 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1563 cctx_prepare (aTHX);
1130 1564
1131 /* cctx_run is the alternative tail of transfer() */ 1565 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1566 transfer_tail (aTHX);
1134 1567
1135 /* 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 */
1136 PL_restartop = PL_op; 1569 PL_restartop = PL_op;
1137 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;
1138 1583
1139 /* 1584 /*
1140 * 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
1141 * 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)
1142 * 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
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1588 * doing in that case. YMMV.
1144 * coroutine as Coro has no such concept
1145 */ 1589 */
1146 PL_top_env = main_top_env; 1590 perlish_exit (aTHX);
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1591 }
1149} 1592}
1150 1593
1151static coro_cctx * 1594static coro_cctx *
1152cctx_new () 1595cctx_new (void)
1153{ 1596{
1154 coro_cctx *cctx; 1597 coro_cctx *cctx;
1155 1598
1156 ++cctx_count; 1599 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx); 1600 New (0, cctx, 1, coro_cctx);
… …
1163 return cctx; 1606 return cctx;
1164} 1607}
1165 1608
1166/* create a new cctx only suitable as source */ 1609/* create a new cctx only suitable as source */
1167static coro_cctx * 1610static coro_cctx *
1168cctx_new_empty () 1611cctx_new_empty (void)
1169{ 1612{
1170 coro_cctx *cctx = cctx_new (); 1613 coro_cctx *cctx = cctx_new ();
1171 1614
1172 cctx->sptr = 0; 1615 cctx->stack.sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0); 1616 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174 1617
1175 return cctx; 1618 return cctx;
1176} 1619}
1177 1620
1178/* create a new cctx suitable as destination/running a perl interpreter */ 1621/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx * 1622static coro_cctx *
1180cctx_new_run () 1623cctx_new_run (void)
1181{ 1624{
1182 coro_cctx *cctx = cctx_new (); 1625 coro_cctx *cctx = cctx_new ();
1183 void *stack_start;
1184 size_t stack_size;
1185 1626
1186#if HAVE_MMAP 1627 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1188 /* mmap supposedly does allocate-on-write for us */
1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1190
1191 if (cctx->sptr != (void *)-1)
1192 {
1193 #if CORO_STACKGUARD
1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1195 #endif
1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1198 cctx->flags |= CC_MAPPED;
1199 } 1628 {
1200 else
1201#endif
1202 {
1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1204 New (0, cctx->sptr, cctx_stacksize, long);
1205
1206 if (!cctx->sptr)
1207 {
1208 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1629 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1209 _exit (EXIT_FAILURE); 1630 _exit (EXIT_FAILURE);
1210 }
1211
1212 stack_start = cctx->sptr;
1213 stack_size = cctx->ssize;
1214 } 1631 }
1215 1632
1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1220 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);
1221 1634
1222 return cctx; 1635 return cctx;
1223} 1636}
1224 1637
1225static void 1638static void
1226cctx_destroy (coro_cctx *cctx) 1639cctx_destroy (coro_cctx *cctx)
1227{ 1640{
1228 if (!cctx) 1641 if (!cctx)
1229 return; 1642 return;
1230 1643
1644 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1645
1231 --cctx_count; 1646 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1647 coro_destroy (&cctx->cctx);
1233 1648
1234 /* coro_transfer creates new, empty cctx's */ 1649 coro_stack_free (&cctx->stack);
1235 if (cctx->sptr)
1236 {
1237 #if CORO_USE_VALGRIND
1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1239 #endif
1240
1241#if HAVE_MMAP
1242 if (cctx->flags & CC_MAPPED)
1243 munmap (cctx->sptr, cctx->ssize);
1244 else
1245#endif
1246 Safefree (cctx->sptr);
1247 }
1248 1650
1249 Safefree (cctx); 1651 Safefree (cctx);
1250} 1652}
1251 1653
1252/* wether this cctx should be destructed */ 1654/* wether this cctx should be destructed */
1253#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))
1254 1656
1255static coro_cctx * 1657static coro_cctx *
1256cctx_get (pTHX) 1658cctx_get (pTHX)
1257{ 1659{
1258 while (expect_true (cctx_first)) 1660 while (ecb_expect_true (cctx_first))
1259 { 1661 {
1260 coro_cctx *cctx = cctx_first; 1662 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1663 cctx_first = cctx->next;
1262 --cctx_idle; 1664 --cctx_idle;
1263 1665
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1666 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1667 return cctx;
1266 1668
1267 cctx_destroy (cctx); 1669 cctx_destroy (cctx);
1268 } 1670 }
1269 1671
… …
1271} 1673}
1272 1674
1273static void 1675static void
1274cctx_put (coro_cctx *cctx) 1676cctx_put (coro_cctx *cctx)
1275{ 1677{
1276 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));
1277 1679
1278 /* free another cctx if overlimit */ 1680 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1681 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1682 {
1281 coro_cctx *first = cctx_first; 1683 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1684 cctx_first = first->next;
1283 --cctx_idle; 1685 --cctx_idle;
1284 1686
… …
1293/** coroutine switching *****************************************************/ 1695/** coroutine switching *****************************************************/
1294 1696
1295static void 1697static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1698transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1699{
1700 /* TODO: throwing up here is considered harmful */
1701
1298 if (expect_true (prev != next)) 1702 if (ecb_expect_true (prev != next))
1299 { 1703 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1704 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1706
1303 if (expect_false (next->flags & CF_RUNNING)) 1707 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 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,");
1308 1709
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1710#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1711 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1311 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,");
1312#endif 1713#endif
1313 } 1714 }
1314} 1715}
1315 1716
1316/* always use the TRANSFER macro */ 1717/* always use the TRANSFER macro */
1317static void NOINLINE 1718static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1719transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1720{
1320 dSTACKLEVEL; 1721 dSTACKLEVEL;
1321 1722
1322 /* sometimes transfer is only called to set idle_sp */ 1723 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1724 if (ecb_expect_false (!prev))
1324 { 1725 {
1325 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1726 cctx_current->idle_sp = STACKLEVEL;
1326 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 */
1327 } 1728 }
1328 else if (expect_true (prev != next)) 1729 else if (ecb_expect_true (prev != next))
1329 { 1730 {
1330 coro_cctx *prev__cctx; 1731 coro_cctx *cctx_prev;
1331 1732
1332 if (expect_false (prev->flags & CF_NEW)) 1733 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1734 {
1334 /* create a new empty/source context */ 1735 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1736 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1737 prev->flags |= CF_RUNNING;
1338 } 1738 }
1339 1739
1340 prev->flags &= ~CF_RUNNING; 1740 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1741 next->flags |= CF_RUNNING;
1342 1742
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1743 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1744 save_perl (aTHX_ prev);
1347 1745
1348 if (expect_false (next->flags & CF_NEW)) 1746 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1747 {
1350 /* need to start coroutine */ 1748 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1749 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1750 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1751 init_perl (aTHX_ next);
1354 } 1752 }
1355 else 1753 else
1356 load_perl (aTHX_ next); 1754 load_perl (aTHX_ next);
1357 1755
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1756 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1757 if (ecb_expect_true (
1362 prev__cctx->idle_sp == (void *)stacklevel 1758 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1759 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1760 && !force_cctx
1365 )) 1761 ))
1366 { 1762 {
1367 /* 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 */
1368 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));
1369 1765
1370 prev->cctx = 0;
1371
1372 /* 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. */
1373 /* 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 */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1768 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1769 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1770 next->cctx = cctx_get (aTHX);
1377 1771
1378 cctx_put (prev__cctx); 1772 cctx_put (cctx_current);
1379 } 1773 }
1774 else
1775 prev->cctx = cctx_current;
1380 1776
1381 ++next->usecount; 1777 ++next->usecount;
1382 1778
1383 if (expect_true (!next->cctx)) 1779 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1780 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1781
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1782 next->cctx = 0;
1387 transfer_next = next;
1388 1783
1389 if (expect_false (prev__cctx != next->cctx)) 1784 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1785 {
1391 prev__cctx->top_env = PL_top_env; 1786 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1787 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1788 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1789 }
1395 1790
1396 transfer_tail (aTHX); 1791 transfer_tail (aTHX);
1397 } 1792 }
1398} 1793}
… …
1400#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))
1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1796#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1797
1403/** high level stuff ********************************************************/ 1798/** high level stuff ********************************************************/
1404 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 */
1405static int 1802static void
1803coro_call_on_destroy (pTHX_ struct coro *coro);
1804
1805static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1806coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1807{
1408 if (coro->flags & CF_DESTROYED) 1808 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1809 return;
1410 1810
1811 slf_destroy (aTHX_ coro);
1812
1411 coro->flags |= CF_DESTROYED; 1813 coro->flags |= CF_ZOMBIE;
1412 1814
1413 if (coro->flags & CF_READY) 1815 if (coro->flags & CF_READY)
1414 { 1816 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1817 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1818 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1819 --coro_nready;
1419 UNLOCK;
1420 } 1820 }
1421 else 1821 else
1422 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 */
1423
1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1425 {
1426 struct coro temp;
1427
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1823
1443 if (coro->next) coro->next->prev = coro->prev; 1824 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1825 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1826 if (coro == coro_first) coro_first = coro->next;
1446 1827
1447 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 */
1448} 1843}
1449 1844
1450static int 1845static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1846coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1847{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1848 struct coro *coro = (struct coro *)mg->mg_ptr;
1849
1850 coro_state_destroy (aTHX_ coro);
1454 mg->mg_ptr = 0; 1851 mg->mg_ptr = 0;
1455 1852
1456 coro->hv = 0; 1853 SvREFCNT_dec (coro->on_destroy);
1854 SvREFCNT_dec (coro->status);
1457 1855
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro);
1461 Safefree (coro); 1856 Safefree (coro);
1462 }
1463 1857
1464 return 0; 1858 return 0;
1465} 1859}
1466 1860
1467static int 1861static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1862coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1863{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1864 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1865 /* we simply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1866 mg->mg_ptr = 0;
1867 mg->mg_virtual = 0;
1473 1868
1474 return 0; 1869 return 0;
1475} 1870}
1476 1871
1477static MGVTBL coro_state_vtbl = { 1872static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1897 TRANSFER (ta, 1);
1503} 1898}
1504 1899
1505/** Coro ********************************************************************/ 1900/** Coro ********************************************************************/
1506 1901
1507static void 1902ecb_inline void
1508coro_enq (pTHX_ SV *coro_sv) 1903coro_enq (pTHX_ struct coro *coro)
1509{ 1904{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1905 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1906
1513static SV * 1907 SvREFCNT_inc_NN (coro->hv);
1908
1909 coro->next_ready = 0;
1910 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1911 ready [1] = coro;
1912}
1913
1914ecb_inline struct coro *
1514coro_deq (pTHX) 1915coro_deq (pTHX)
1515{ 1916{
1516 int prio; 1917 int prio;
1517 1918
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1919 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1920 {
1520 return av_shift (coro_ready [prio]); 1921 struct coro **ready = coro_ready [prio];
1922
1923 if (ready [0])
1924 {
1925 struct coro *coro = ready [0];
1926 ready [0] = coro->next_ready;
1927 return coro;
1928 }
1929 }
1521 1930
1522 return 0; 1931 return 0;
1932}
1933
1934static void
1935invoke_sv_ready_hook_helper (void)
1936{
1937 dTHX;
1938 dSP;
1939
1940 ENTER;
1941 SAVETMPS;
1942
1943 PUSHMARK (SP);
1944 PUTBACK;
1945 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1946
1947 FREETMPS;
1948 LEAVE;
1523} 1949}
1524 1950
1525static int 1951static int
1526api_ready (pTHX_ SV *coro_sv) 1952api_ready (pTHX_ SV *coro_sv)
1527{ 1953{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1954 struct coro *coro = SvSTATE (coro_sv);
1536 1955
1537 if (coro->flags & CF_READY) 1956 if (coro->flags & CF_READY)
1538 return 0; 1957 return 0;
1539 1958
1540 coro->flags |= CF_READY; 1959 coro->flags |= CF_READY;
1541 1960
1542 LOCK; 1961 coro_enq (aTHX_ coro);
1543 1962
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1963 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1964 if (coroapi.readyhook)
1546 1965 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1966
1571 return 1; 1967 return 1;
1572} 1968}
1573 1969
1574static int 1970static int
1575api_is_ready (pTHX_ SV *coro_sv) 1971api_is_ready (pTHX_ SV *coro_sv)
1576{ 1972{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1973 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1974}
1579 1975
1580INLINE void 1976/* expects to own a reference to next->hv */
1977ecb_inline void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1978prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1979{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1980 SV *prev_sv = SvRV (coro_current);
1981
1627 ta->prev = SvSTATE (prev_sv); 1982 ta->prev = SvSTATE_hv (prev_sv);
1983 ta->next = next;
1984
1628 TRANSFER_CHECK (*ta); 1985 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1986
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1987 SvRV_set (coro_current, (SV *)next->hv);
1632 1988
1633 LOCK;
1634 free_coro_mortal (aTHX); 1989 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1990 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1991}
1638 1992
1639INLINE void 1993static void
1994prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1995{
1996 for (;;)
1997 {
1998 struct coro *next = coro_deq (aTHX);
1999
2000 if (ecb_expect_true (next))
2001 {
2002 /* cannot transfer to destroyed coros, skip and look for next */
2003 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
2004 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
2005 else
2006 {
2007 next->flags &= ~CF_READY;
2008 --coro_nready;
2009
2010 prepare_schedule_to (aTHX_ ta, next);
2011 break;
2012 }
2013 }
2014 else
2015 {
2016 /* nothing to schedule: call the idle handler */
2017 if (SvROK (sv_idle)
2018 && SvOBJECT (SvRV (sv_idle)))
2019 {
2020 if (SvRV (sv_idle) == SvRV (coro_current))
2021 {
2022 require_pv ("Carp");
2023
2024 {
2025 dSP;
2026
2027 ENTER;
2028 SAVETMPS;
2029
2030 PUSHMARK (SP);
2031 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2032 PUTBACK;
2033 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2034
2035 FREETMPS;
2036 LEAVE;
2037 }
2038 }
2039
2040 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2041 api_ready (aTHX_ SvRV (sv_idle));
2042 --coro_nready;
2043 }
2044 else
2045 {
2046 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2047 dSP;
2048
2049 ENTER;
2050 SAVETMPS;
2051
2052 PUSHMARK (SP);
2053 PUTBACK;
2054 call_sv (sv_idle, G_VOID | G_DISCARD);
2055
2056 FREETMPS;
2057 LEAVE;
2058 }
2059 }
2060 }
2061}
2062
2063ecb_inline void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 2064prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 2065{
1642 api_ready (aTHX_ coro_current); 2066 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 2067 prepare_schedule (aTHX_ ta);
1644} 2068}
1645 2069
1646INLINE void 2070ecb_inline void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2071prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 2072{
1649 SV *prev = SvRV (coro_current); 2073 SV *prev = SvRV (coro_current);
1650 2074
1651 if (coro_nready) 2075 if (coro_nready)
… …
1664 2088
1665 prepare_schedule (aTHX_ &ta); 2089 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 2090 TRANSFER (ta, 1);
1667} 2091}
1668 2092
2093static void
2094api_schedule_to (pTHX_ SV *coro_sv)
2095{
2096 struct coro_transfer_args ta;
2097 struct coro *next = SvSTATE (coro_sv);
2098
2099 SvREFCNT_inc_NN (coro_sv);
2100 prepare_schedule_to (aTHX_ &ta, next);
2101}
2102
1669static int 2103static int
1670api_cede (pTHX) 2104api_cede (pTHX)
1671{ 2105{
1672 struct coro_transfer_args ta; 2106 struct coro_transfer_args ta;
1673 2107
1674 prepare_cede (aTHX_ &ta); 2108 prepare_cede (aTHX_ &ta);
1675 2109
1676 if (expect_true (ta.prev != ta.next)) 2110 if (ecb_expect_true (ta.prev != ta.next))
1677 { 2111 {
1678 TRANSFER (ta, 1); 2112 TRANSFER (ta, 1);
1679 return 1; 2113 return 1;
1680 } 2114 }
1681 else 2115 else
… …
1700static void 2134static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 2135api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 2136{
1703 struct coro *coro = SvSTATE (coro_sv); 2137 struct coro *coro = SvSTATE (coro_sv);
1704 2138
2139 if (coro->flags & CF_RUNNING)
2140 croak ("cannot enable tracing on a running coroutine, caught");
2141
1705 if (flags & CC_TRACE) 2142 if (flags & CC_TRACE)
1706 { 2143 {
1707 if (!coro->cctx) 2144 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2145 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2146 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2147 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2148
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2149 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2150 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2151 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2152 {
… …
1720 else 2157 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2158 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2159 }
1723} 2160}
1724 2161
2162static void
2163coro_push_av (pTHX_ AV *av, I32 gimme_v)
2164{
2165 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2166 {
2167 dSP;
2168
2169 if (gimme_v == G_SCALAR)
2170 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2171 else
2172 {
2173 int i;
2174 EXTEND (SP, AvFILLp (av) + 1);
2175
2176 for (i = 0; i <= AvFILLp (av); ++i)
2177 PUSHs (AvARRAY (av)[i]);
2178 }
2179
2180 PUTBACK;
2181 }
2182}
2183
2184static void
2185coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2186{
2187 if (!coro->on_destroy)
2188 coro->on_destroy = newAV ();
2189
2190 av_push (coro->on_destroy, cb);
2191}
2192
2193static void
2194slf_destroy_join (pTHX_ struct CoroSLF *frame)
2195{
2196 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2197}
2198
2199static int
2200slf_check_join (pTHX_ struct CoroSLF *frame)
2201{
2202 struct coro *coro = (struct coro *)frame->data;
2203
2204 if (!coro->status)
2205 return 1;
2206
2207 frame->destroy = 0;
2208
2209 coro_push_av (aTHX_ coro->status, GIMME_V);
2210
2211 SvREFCNT_dec ((SV *)coro->hv);
2212
2213 return 0;
2214}
2215
2216static void
2217slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2218{
2219 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2220
2221 if (items > 1)
2222 croak ("join called with too many arguments");
2223
2224 if (coro->status)
2225 frame->prepare = prepare_nop;
2226 else
2227 {
2228 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2229 frame->prepare = prepare_schedule;
2230 }
2231
2232 frame->check = slf_check_join;
2233 frame->destroy = slf_destroy_join;
2234 frame->data = (void *)coro;
2235 SvREFCNT_inc (coro->hv);
2236}
2237
2238static void
2239coro_call_on_destroy (pTHX_ struct coro *coro)
2240{
2241 AV *od = coro->on_destroy;
2242
2243 if (!od)
2244 return;
2245
2246 coro->on_destroy = 0;
2247 sv_2mortal ((SV *)od);
2248
2249 while (AvFILLp (od) >= 0)
2250 {
2251 SV *cb = sv_2mortal (av_pop (od));
2252
2253 /* coro hv's (and only hv's at the moment) are supported as well */
2254 if (SvSTATEhv_p (aTHX_ cb))
2255 api_ready (aTHX_ cb);
2256 else
2257 {
2258 dSP; /* don't disturb outer sp */
2259 PUSHMARK (SP);
2260
2261 if (coro->status)
2262 {
2263 PUTBACK;
2264 coro_push_av (aTHX_ coro->status, G_ARRAY);
2265 SPAGAIN;
2266 }
2267
2268 PUTBACK;
2269 call_sv (cb, G_VOID | G_DISCARD);
2270 }
2271 }
2272}
2273
2274static void
2275coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2276{
2277 AV *av;
2278
2279 if (coro->status)
2280 {
2281 av = coro->status;
2282 av_clear (av);
2283 }
2284 else
2285 av = coro->status = newAV ();
2286
2287 /* items are actually not so common, so optimise for this case */
2288 if (items)
2289 {
2290 int i;
2291
2292 av_extend (av, items - 1);
2293
2294 for (i = 0; i < items; ++i)
2295 av_push (av, SvREFCNT_inc_NN (arg [i]));
2296 }
2297}
2298
2299static void
2300slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2301{
2302 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2303 api_ready (aTHX_ sv_manager);
2304
2305 frame->prepare = prepare_schedule;
2306 frame->check = slf_check_repeat;
2307
2308 /* as a minor optimisation, we could unwind all stacks here */
2309 /* but that puts extra pressure on pp_slf, and is not worth much */
2310 /*coro_unwind_stacks (aTHX);*/
2311}
2312
2313static void
2314slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2315{
2316 HV *coro_hv = (HV *)SvRV (coro_current);
2317
2318 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2319 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2320}
2321
2322static void
2323slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 HV *coro_hv;
2326 struct coro *coro;
2327
2328 if (items <= 0)
2329 croak ("Coro::cancel called without coro object,");
2330
2331 coro = SvSTATE (arg [0]);
2332 coro_hv = coro->hv;
2333
2334 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2335
2336 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2337 {
2338 /* coro currently busy cancelling something, so just notify it */
2339 coro->slf_frame.data = (void *)coro;
2340
2341 frame->prepare = prepare_nop;
2342 frame->check = slf_check_nop;
2343 }
2344 else if (coro_hv == (HV *)SvRV (coro_current))
2345 {
2346 /* cancelling the current coro is allowed, and equals terminate */
2347 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2348 }
2349 else
2350 {
2351 struct coro *self = SvSTATE_current;
2352
2353 if (!self)
2354 croak ("Coro::cancel called outside of thread content,");
2355
2356 /* otherwise we cancel directly, purely for speed reasons
2357 * unfortunately, this requires some magic trickery, as
2358 * somebody else could cancel us, so we have to fight the cancellation.
2359 * this is ugly, and hopefully fully worth the extra speed.
2360 * besides, I can't get the slow-but-safe version working...
2361 */
2362 slf_frame.data = 0;
2363 self->flags |= CF_NOCANCEL;
2364 coro_state_destroy (aTHX_ coro);
2365 self->flags &= ~CF_NOCANCEL;
2366
2367 if (slf_frame.data)
2368 {
2369 /* while we were busy we have been cancelled, so terminate */
2370 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2371 }
2372 else
2373 {
2374 frame->prepare = prepare_nop;
2375 frame->check = slf_check_nop;
2376 }
2377 }
2378}
2379
2380static int
2381slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2382{
2383 frame->prepare = 0;
2384 coro_unwind_stacks (aTHX);
2385
2386 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2387
2388 return 1;
2389}
2390
2391static int
2392safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2393{
2394 if (coro->cctx)
2395 croak ("coro inside C callback, unable to cancel at this time, caught");
2396
2397 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2398 {
2399 coro_set_status (aTHX_ coro, arg, items);
2400 coro_state_destroy (aTHX_ coro);
2401 }
2402 else
2403 {
2404 if (!coro->slf_frame.prepare)
2405 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2406
2407 slf_destroy (aTHX_ coro);
2408
2409 coro_set_status (aTHX_ coro, arg, items);
2410 coro->slf_frame.prepare = prepare_nop;
2411 coro->slf_frame.check = slf_check_safe_cancel;
2412
2413 api_ready (aTHX_ (SV *)coro->hv);
2414 }
2415
2416 return 1;
2417}
2418
2419/*****************************************************************************/
2420/* async pool handler */
2421
2422static int
2423slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2424{
2425 HV *hv = (HV *)SvRV (coro_current);
2426 struct coro *coro = (struct coro *)frame->data;
2427
2428 if (!coro->invoke_cb)
2429 return 1; /* loop till we have invoke */
2430 else
2431 {
2432 hv_store (hv, "desc", sizeof ("desc") - 1,
2433 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2434
2435 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2436
2437 {
2438 dSP;
2439 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2440 PUTBACK;
2441 }
2442
2443 SvREFCNT_dec (GvAV (PL_defgv));
2444 GvAV (PL_defgv) = coro->invoke_av;
2445 coro->invoke_av = 0;
2446
2447 return 0;
2448 }
2449}
2450
2451static void
2452slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2453{
2454 HV *hv = (HV *)SvRV (coro_current);
2455 struct coro *coro = SvSTATE_hv ((SV *)hv);
2456
2457 if (ecb_expect_true (coro->saved_deffh))
2458 {
2459 /* subsequent iteration */
2460 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2461 coro->saved_deffh = 0;
2462
2463 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2464 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2465 {
2466 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2467 return;
2468 }
2469 else
2470 {
2471 av_clear (GvAV (PL_defgv));
2472 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2473
2474 if (ecb_expect_false (coro->swap_sv))
2475 {
2476 SWAP_SVS_LEAVE (coro);
2477 SvREFCNT_dec_NN (coro->swap_sv);
2478 coro->swap_sv = 0;
2479 }
2480
2481 coro->prio = 0;
2482
2483 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2484 api_trace (aTHX_ coro_current, 0);
2485
2486 frame->prepare = prepare_schedule;
2487 av_push (av_async_pool, SvREFCNT_inc_NN (hv));
2488 }
2489 }
2490 else
2491 {
2492 /* first iteration, simply fall through */
2493 frame->prepare = prepare_nop;
2494 }
2495
2496 frame->check = slf_check_pool_handler;
2497 frame->data = (void *)coro;
2498}
2499
2500/*****************************************************************************/
2501/* rouse callback */
2502
2503#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2504
2505static void
2506coro_rouse_callback (pTHX_ CV *cv)
2507{
2508 dXSARGS;
2509 SV *data = (SV *)S_GENSUB_ARG;
2510 SV *coro = SvRV (data);
2511
2512 /* data starts being either undef or a coro, and is replaced by the results when done */
2513 if (SvTYPE (coro) != SVt_PVAV)
2514 {
2515 /* first call, set args */
2516
2517 assert (&ST (0) < &ST (1)); /* ensure the stack is in the order we expect it to be */
2518 SvRV_set (data, (SV *)av_make (items, &ST (0))); /* av_make copies the SVs */
2519
2520 if (coro != &PL_sv_undef)
2521 {
2522 api_ready (aTHX_ coro);
2523 SvREFCNT_dec_NN (coro);
2524 }
2525 }
2526
2527 XSRETURN_EMPTY;
2528}
2529
2530static int
2531slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2532{
2533 SV *data = (SV *)frame->data;
2534
2535 if (CORO_THROW)
2536 return 0;
2537
2538 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2539 return 1;
2540
2541 /* now push all results on the stack */
2542 {
2543 dSP;
2544 AV *av = (AV *)SvRV (data);
2545 int i;
2546
2547 EXTEND (SP, AvFILLp (av) + 1);
2548 for (i = 0; i <= AvFILLp (av); ++i)
2549 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2550
2551 /* we have stolen the elements, make it unreal and free */
2552 AvREAL_off (av);
2553 av_undef (av);
2554
2555 PUTBACK;
2556 }
2557
2558 return 0;
2559}
2560
2561static void
2562slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2563{
2564 SV *cb;
2565
2566 if (items)
2567 cb = arg [0];
2568 else
2569 {
2570 struct coro *coro = SvSTATE_current;
2571
2572 if (!coro->rouse_cb)
2573 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2574
2575 cb = sv_2mortal (coro->rouse_cb);
2576 coro->rouse_cb = 0;
2577 }
2578
2579 if (!SvROK (cb)
2580 || SvTYPE (SvRV (cb)) != SVt_PVCV
2581 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2582 croak ("Coro::rouse_wait called with illegal callback argument,");
2583
2584 {
2585 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2586 SV *data = (SV *)S_GENSUB_ARG;
2587 int data_ready = SvTYPE (SvRV (data)) == SVt_PVAV;
2588
2589 /* if there is no data, we need to store the current coro in the reference so we can be woken up */
2590 if (!data_ready)
2591 if (SvRV (data) != &PL_sv_undef)
2592 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");
2593 else
2594 SvRV_set (data, SvREFCNT_inc_NN (SvRV (coro_current)));
2595
2596 frame->data = (void *)data;
2597 frame->prepare = data_ready ? prepare_nop : prepare_schedule;
2598 frame->check = slf_check_rouse_wait;
2599 }
2600}
2601
2602static SV *
2603coro_new_rouse_cb (pTHX)
2604{
2605 HV *hv = (HV *)SvRV (coro_current);
2606 struct coro *coro = SvSTATE_hv (hv);
2607 SV *data = newRV_noinc (&PL_sv_undef);
2608 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2609
2610 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2611 SvREFCNT_dec_NN (data); /* magicext increases the refcount */
2612
2613 SvREFCNT_dec (coro->rouse_cb);
2614 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2615
2616 return cb;
2617}
2618
2619/*****************************************************************************/
2620/* schedule-like-function opcode (SLF) */
2621
2622static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2623static const CV *slf_cv;
2624static SV **slf_argv;
2625static int slf_argc, slf_arga; /* count, allocated */
2626static I32 slf_ax; /* top of stack, for restore */
2627
2628/* this restores the stack in the case we patched the entersub, to */
2629/* recreate the stack frame as perl will on following calls */
2630/* since entersub cleared the stack */
2631static OP *
2632pp_restore (pTHX)
2633{
2634 int i;
2635 SV **SP = PL_stack_base + slf_ax;
2636
2637 PUSHMARK (SP);
2638
2639 EXTEND (SP, slf_argc + 1);
2640
2641 for (i = 0; i < slf_argc; ++i)
2642 PUSHs (sv_2mortal (slf_argv [i]));
2643
2644 PUSHs ((SV *)CvGV (slf_cv));
2645
2646 RETURNOP (slf_restore.op_first);
2647}
2648
2649static void
2650slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2651{
2652 SV **arg = (SV **)slf_frame.data;
2653
2654 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2655}
2656
2657static void
2658slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2659{
2660 if (items != 2)
2661 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2662
2663 frame->prepare = slf_prepare_transfer;
2664 frame->check = slf_check_nop;
2665 frame->data = (void *)arg; /* let's hope it will stay valid */
2666}
2667
2668static void
2669slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2670{
2671 frame->prepare = prepare_schedule;
2672 frame->check = slf_check_nop;
2673}
2674
2675static void
2676slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2677{
2678 struct coro *next = (struct coro *)slf_frame.data;
2679
2680 SvREFCNT_inc_NN (next->hv);
2681 prepare_schedule_to (aTHX_ ta, next);
2682}
2683
2684static void
2685slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 if (!items)
2688 croak ("Coro::schedule_to expects a coroutine argument, caught");
2689
2690 frame->data = (void *)SvSTATE (arg [0]);
2691 frame->prepare = slf_prepare_schedule_to;
2692 frame->check = slf_check_nop;
2693}
2694
2695static void
2696slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2697{
2698 api_ready (aTHX_ SvRV (coro_current));
2699
2700 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2701}
2702
2703static void
2704slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2705{
2706 frame->prepare = prepare_cede;
2707 frame->check = slf_check_nop;
2708}
2709
2710static void
2711slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2712{
2713 frame->prepare = prepare_cede_notself;
2714 frame->check = slf_check_nop;
2715}
2716
2717/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2718static void
2719slf_destroy (pTHX_ struct coro *coro)
2720{
2721 struct CoroSLF frame = coro->slf_frame;
2722
2723 /*
2724 * The on_destroy below most likely is from an SLF call.
2725 * Since by definition the SLF call will not finish when we destroy
2726 * the coro, we will have to force-finish it here, otherwise
2727 * cleanup functions cannot call SLF functions.
2728 */
2729 coro->slf_frame.prepare = 0;
2730
2731 /* this callback is reserved for slf functions needing to do cleanup */
2732 if (frame.destroy && frame.prepare && !PL_dirty)
2733 frame.destroy (aTHX_ &frame);
2734}
2735
2736/*
2737 * these not obviously related functions are all rolled into one
2738 * function to increase chances that they all will call transfer with the same
2739 * stack offset
2740 * SLF stands for "schedule-like-function".
2741 */
2742static OP *
2743pp_slf (pTHX)
2744{
2745 I32 checkmark; /* mark SP to see how many elements check has pushed */
2746
2747 /* set up the slf frame, unless it has already been set-up */
2748 /* the latter happens when a new coro has been started */
2749 /* or when a new cctx was attached to an existing coroutine */
2750 if (ecb_expect_true (!slf_frame.prepare))
2751 {
2752 /* first iteration */
2753 dSP;
2754 SV **arg = PL_stack_base + TOPMARK + 1;
2755 int items = SP - arg; /* args without function object */
2756 SV *gv = *sp;
2757
2758 /* do a quick consistency check on the "function" object, and if it isn't */
2759 /* for us, divert to the real entersub */
2760 if (SvTYPE (gv) != SVt_PVGV
2761 || !GvCV (gv)
2762 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2763 return PL_ppaddr[OP_ENTERSUB](aTHX);
2764
2765 if (!(PL_op->op_flags & OPf_STACKED))
2766 {
2767 /* ampersand-form of call, use @_ instead of stack */
2768 AV *av = GvAV (PL_defgv);
2769 arg = AvARRAY (av);
2770 items = AvFILLp (av) + 1;
2771 }
2772
2773 /* now call the init function, which needs to set up slf_frame */
2774 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2775 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2776
2777 /* pop args */
2778 SP = PL_stack_base + POPMARK;
2779
2780 PUTBACK;
2781 }
2782
2783 /* now that we have a slf_frame, interpret it! */
2784 /* we use a callback system not to make the code needlessly */
2785 /* complicated, but so we can run multiple perl coros from one cctx */
2786
2787 do
2788 {
2789 struct coro_transfer_args ta;
2790
2791 slf_frame.prepare (aTHX_ &ta);
2792 TRANSFER (ta, 0);
2793
2794 checkmark = PL_stack_sp - PL_stack_base;
2795 }
2796 while (slf_frame.check (aTHX_ &slf_frame));
2797
2798 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2799
2800 /* exception handling */
2801 if (ecb_expect_false (CORO_THROW))
2802 {
2803 SV *exception = sv_2mortal (CORO_THROW);
2804
2805 CORO_THROW = 0;
2806 sv_setsv (ERRSV, exception);
2807 croak (0);
2808 }
2809
2810 /* return value handling - mostly like entersub */
2811 /* make sure we put something on the stack in scalar context */
2812 if (GIMME_V == G_SCALAR
2813 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2814 {
2815 dSP;
2816 SV **bot = PL_stack_base + checkmark;
2817
2818 if (sp == bot) /* too few, push undef */
2819 bot [1] = &PL_sv_undef;
2820 else /* too many, take last one */
2821 bot [1] = *sp;
2822
2823 SP = bot + 1;
2824
2825 PUTBACK;
2826 }
2827
2828 return NORMAL;
2829}
2830
2831static void
2832api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2833{
2834 int i;
2835 SV **arg = PL_stack_base + ax;
2836 int items = PL_stack_sp - arg + 1;
2837
2838 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2839
2840 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2841 && PL_op->op_ppaddr != pp_slf)
2842 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2843
2844 CvFLAGS (cv) |= CVf_SLF;
2845 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2846 slf_cv = cv;
2847
2848 /* we patch the op, and then re-run the whole call */
2849 /* we have to put the same argument on the stack for this to work */
2850 /* and this will be done by pp_restore */
2851 slf_restore.op_next = (OP *)&slf_restore;
2852 slf_restore.op_type = OP_CUSTOM;
2853 slf_restore.op_ppaddr = pp_restore;
2854 slf_restore.op_first = PL_op;
2855
2856 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2857
2858 if (PL_op->op_flags & OPf_STACKED)
2859 {
2860 if (items > slf_arga)
2861 {
2862 slf_arga = items;
2863 Safefree (slf_argv);
2864 New (0, slf_argv, slf_arga, SV *);
2865 }
2866
2867 slf_argc = items;
2868
2869 for (i = 0; i < items; ++i)
2870 slf_argv [i] = SvREFCNT_inc (arg [i]);
2871 }
2872 else
2873 slf_argc = 0;
2874
2875 PL_op->op_ppaddr = pp_slf;
2876 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2877
2878 PL_op = (OP *)&slf_restore;
2879}
2880
2881/*****************************************************************************/
2882/* dynamic wind */
2883
2884static void
2885on_enterleave_call (pTHX_ SV *cb)
2886{
2887 dSP;
2888
2889 PUSHSTACK;
2890
2891 PUSHMARK (SP);
2892 PUTBACK;
2893 call_sv (cb, G_VOID | G_DISCARD);
2894 SPAGAIN;
2895
2896 POPSTACK;
2897}
2898
2899static SV *
2900coro_avp_pop_and_free (pTHX_ AV **avp)
2901{
2902 AV *av = *avp;
2903 SV *res = av_pop (av);
2904
2905 if (AvFILLp (av) < 0)
2906 {
2907 *avp = 0;
2908 SvREFCNT_dec (av);
2909 }
2910
2911 return res;
2912}
2913
2914static void
2915coro_pop_on_enter (pTHX_ void *coro)
2916{
2917 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2918 SvREFCNT_dec (cb);
2919}
2920
2921static void
2922coro_pop_on_leave (pTHX_ void *coro)
2923{
2924 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2925 on_enterleave_call (aTHX_ sv_2mortal (cb));
2926}
2927
2928static void
2929enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2930{
2931 if (!hook)
2932 return;
2933
2934 if (!*avp)
2935 {
2936 *avp = newAV ();
2937 AvREAL_off (*avp);
2938 }
2939
2940 av_push (*avp, (SV *)hook);
2941 av_push (*avp, (SV *)arg);
2942}
2943
2944static void
2945enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2946{
2947 AV *av = *avp;
2948 int i;
2949
2950 if (!av)
2951 return;
2952
2953 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2954 if (AvARRAY (av)[i] == (SV *)hook)
2955 {
2956 if (execute)
2957 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2958
2959 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2960 av_pop (av);
2961 av_pop (av);
2962 break;
2963 }
2964
2965 if (AvFILLp (av) >= 0)
2966 {
2967 *avp = 0;
2968 SvREFCNT_dec_NN (av);
2969 }
2970}
2971
2972static void
2973api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2974{
2975 struct coro *coro = SvSTATE (coro_sv);
2976
2977 if (SvSTATE_current == coro)
2978 if (enter)
2979 enter (aTHX_ enter_arg);
2980
2981 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2982 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2983}
2984
2985static void
2986api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2987{
2988 struct coro *coro = SvSTATE (coro_sv);
2989
2990 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2991 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2992}
2993
2994static void
2995savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2996{
2997 struct coro *coro = SvSTATE_current;
2998
2999 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
3000}
3001
3002static void
3003savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
3004{
3005 struct coro *coro = SvSTATE_current;
3006
3007 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
3008}
3009
3010static void
3011api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
3012{
3013 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
3014
3015 /* this ought to be much cheaper than malloc + a single destructor call */
3016 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
3017 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
3018}
3019
1725/*****************************************************************************/ 3020/*****************************************************************************/
1726/* PerlIO::cede */ 3021/* PerlIO::cede */
1727 3022
1728typedef struct 3023typedef struct
1729{ 3024{
1730 PerlIOBuf base; 3025 PerlIOBuf base;
1731 NV next, every; 3026 NV next, every;
1732} PerlIOCede; 3027} PerlIOCede;
1733 3028
1734static IV 3029static IV ecb_cold
1735PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3030PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1736{ 3031{
1737 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3032 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1738 3033
1739 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3034 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1740 self->next = nvtime () + self->every; 3035 self->next = nvtime () + self->every;
1741 3036
1742 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3037 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1743} 3038}
1744 3039
1745static SV * 3040static SV * ecb_cold
1746PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3041PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1747{ 3042{
1748 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3043 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1749 3044
1750 return newSVnv (self->every); 3045 return newSVnv (self->every);
… …
1796 PerlIOBuf_get_cnt, 3091 PerlIOBuf_get_cnt,
1797 PerlIOBuf_set_ptrcnt, 3092 PerlIOBuf_set_ptrcnt,
1798}; 3093};
1799 3094
1800/*****************************************************************************/ 3095/*****************************************************************************/
3096/* Coro::Semaphore & Coro::Signal */
1801 3097
1802static const CV *slf_cv; /* for quick consistency check */
1803
1804static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1805static SV *slf_arg0;
1806static SV *slf_arg1;
1807static SV *slf_arg2;
1808
1809/* this restores the stack in the case we patched the entersub, to */
1810/* recreate the stack frame as perl will on following calls */
1811/* since entersub cleared the stack */
1812static OP * 3098static SV *
1813pp_restore (pTHX) 3099coro_waitarray_new (pTHX_ int count)
1814{ 3100{
1815 dSP; 3101 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
3102 AV *av = newAV ();
3103 SV **ary;
1816 3104
1817 PUSHMARK (SP); 3105 /* unfortunately, building manually saves memory */
3106 Newx (ary, 2, SV *);
3107 AvALLOC (av) = ary;
3108#if PERL_VERSION_ATLEAST (5,10,0)
3109 AvARRAY (av) = ary;
3110#else
3111 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3112 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3113 SvPVX ((SV *)av) = (char *)ary;
3114#endif
3115 AvMAX (av) = 1;
3116 AvFILLp (av) = 0;
3117 ary [0] = newSViv (count);
1818 3118
1819 EXTEND (SP, 3); 3119 return newRV_noinc ((SV *)av);
1820 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1821 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1822 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1823 PUSHs ((SV *)CvGV (slf_cv));
1824
1825 RETURNOP (slf_restore.op_first);
1826} 3120}
1827 3121
1828static void 3122/* semaphore */
1829slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1830{
1831 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1832}
1833 3123
1834static void 3124static void
1835slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 3125coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1836{ 3126{
1837 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 3127 SV *count_sv = AvARRAY (av)[0];
3128 IV count = SvIVX (count_sv);
1838 3129
1839 frame->prepare = slf_prepare_set_stacklevel; 3130 count += adjust;
1840 frame->check = slf_check_nop; 3131 SvIVX (count_sv) = count;
1841 frame->data = (void *)SvIV (arg [0]);
1842}
1843 3132
1844static void 3133 /* now wake up as many waiters as are expected to lock */
1845slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 3134 while (count > 0 && AvFILLp (av) > 0)
1846{
1847 SV **arg = (SV **)slf_frame.data;
1848
1849 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1850}
1851
1852static void
1853slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1854{
1855 if (items != 2)
1856 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1857
1858 frame->prepare = slf_prepare_transfer;
1859 frame->check = slf_check_nop;
1860 frame->data = (void *)arg; /* let's hope it will stay valid */
1861}
1862
1863static void
1864slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1865{
1866 frame->prepare = prepare_schedule;
1867 frame->check = slf_check_nop;
1868}
1869
1870static void
1871slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 frame->prepare = prepare_cede;
1874 frame->check = slf_check_nop;
1875}
1876
1877static void
1878slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1879{
1880 frame->prepare = prepare_cede_notself;
1881 frame->check = slf_check_nop;
1882}
1883
1884/* we hijack an hopefully unused CV flag for our purposes */
1885#define CVf_SLF 0x4000
1886
1887/*
1888 * these not obviously related functions are all rolled into one
1889 * function to increase chances that they all will call transfer with the same
1890 * stack offset
1891 * SLF stands for "schedule-like-function".
1892 */
1893static OP *
1894pp_slf (pTHX)
1895{
1896 I32 checkmark; /* mark SP to see how many elements check has pushed */
1897
1898 /* set up the slf frame, unless it has already been set-up */
1899 /* the latter happens when a new coro has been started */
1900 /* or when a new cctx was attached to an existing coroutine */
1901 if (expect_true (!slf_frame.prepare))
1902 { 3135 {
1903 /* first iteration */ 3136 SV *cb;
1904 dSP;
1905 SV **arg = PL_stack_base + TOPMARK + 1;
1906 int items = SP - arg; /* args without function object */
1907 SV *gv = *sp;
1908 3137
1909 /* do a quick consistency check on the "function" object, and if it isn't */ 3138 /* swap first two elements so we can shift a waiter */
1910 /* for us, divert to the real entersub */ 3139 AvARRAY (av)[0] = AvARRAY (av)[1];
1911 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 3140 AvARRAY (av)[1] = count_sv;
1912 return PL_ppaddr[OP_ENTERSUB](aTHX); 3141 cb = av_shift (av);
1913 3142
1914 /* pop args */ 3143 if (SvOBJECT (cb))
1915 SP = PL_stack_base + POPMARK;
1916
1917 if (!(PL_op->op_flags & OPf_STACKED))
1918 { 3144 {
1919 /* ampersand-form of call, use @_ instead of stack */ 3145 api_ready (aTHX_ cb);
1920 AV *av = GvAV (PL_defgv); 3146 --count;
1921 arg = AvARRAY (av);
1922 items = AvFILLp (av) + 1;
1923 } 3147 }
1924 3148 else if (SvTYPE (cb) == SVt_PVCV)
1925 PUTBACK;
1926
1927 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1928 }
1929
1930 /* now interpret the slf_frame */
1931 /* we use a callback system not to make the code needlessly */
1932 /* complicated, but so we can run multiple perl coros from one cctx */
1933
1934 do
1935 {
1936 struct coro_transfer_args ta;
1937
1938 slf_frame.prepare (aTHX_ &ta);
1939 TRANSFER (ta, 0);
1940
1941 checkmark = PL_stack_sp - PL_stack_base;
1942 }
1943 while (slf_frame.check (aTHX_ &slf_frame));
1944
1945 {
1946 dSP;
1947 SV **bot = PL_stack_base + checkmark;
1948 int gimme = GIMME_V;
1949
1950 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1951
1952 /* make sure we put something on the stack in scalar context */
1953 if (gimme == G_SCALAR)
1954 { 3149 {
1955 if (sp == bot) 3150 dSP;
1956 XPUSHs (&PL_sv_undef); 3151 PUSHMARK (SP);
1957 3152 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1958 SP = bot + 1; 3153 PUTBACK;
3154 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1959 } 3155 }
1960 3156
1961 PUTBACK; 3157 SvREFCNT_dec_NN (cb);
1962 } 3158 }
1963
1964 return NORMAL;
1965} 3159}
1966 3160
1967static void 3161static void
1968api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 3162coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
1969{ 3163{
1970 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 3164 /* call $sem->adjust (0) to possibly wake up some other waiters */
1971 3165 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
1972 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1973 && PL_op->op_ppaddr != pp_slf)
1974 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1975
1976 if (items > 3)
1977 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1978
1979 CvFLAGS (cv) |= CVf_SLF;
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_NULL;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1992 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1993 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1994
1995 PL_op->op_ppaddr = pp_slf;
1996
1997 PL_op = (OP *)&slf_restore;
1998} 3166}
1999
2000/*****************************************************************************/
2001 3167
2002static int 3168static int
2003slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 3169slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2004{ 3170{
2005 AV *av = (AV *)frame->data; 3171 AV *av = (AV *)frame->data;
2006 SV *count_sv = AvARRAY (av)[0]; 3172 SV *count_sv = AvARRAY (av)[0];
3173 SV *coro_hv = SvRV (coro_current);
2007 3174
3175 frame->destroy = 0;
3176
3177 /* if we are about to throw, don't actually acquire the lock, just throw */
3178 if (ecb_expect_false (CORO_THROW))
3179 {
3180 /* we still might be responsible for the semaphore, so wake up others */
3181 coro_semaphore_adjust (aTHX_ av, 0);
3182
3183 return 0;
3184 }
2008 if (SvIVX (count_sv) > 0) 3185 else if (SvIVX (count_sv) > 0)
2009 { 3186 {
3187 if (acquire)
2010 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3188 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3189 else
3190 coro_semaphore_adjust (aTHX_ av, 0);
3191
2011 return 0; 3192 return 0;
2012 } 3193 }
2013 else 3194 else
2014 { 3195 {
2015 int i; 3196 int i;
2016 /* if we were woken up but can't down, we look through the whole */ 3197 /* if we were woken up but can't down, we look through the whole */
2017 /* waiters list and only add us if we aren't in there already */ 3198 /* waiters list and only add us if we aren't in there already */
2018 /* this avoids some degenerate memory usage cases */ 3199 /* this avoids some degenerate memory usage cases */
2019 3200 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2020 for (i = 1; i <= AvFILLp (av); ++i)
2021 if (AvARRAY (av)[i] == SvRV (coro_current)) 3201 if (AvARRAY (av)[i] == coro_hv)
2022 return 1; 3202 return 1;
2023 3203
2024 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3204 av_push (av, SvREFCNT_inc (coro_hv));
2025 return 1; 3205 return 1;
2026 } 3206 }
2027} 3207}
2028 3208
2029static void 3209static int
3210slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3211{
3212 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3213}
3214
3215static int
3216slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3217{
3218 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3219}
3220
3221static void
2030slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 3222slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2031{ 3223{
2032 AV *av = (AV *)SvRV (arg [0]); 3224 AV *av = (AV *)SvRV (arg [0]);
2033 3225
2034 if (SvIVX (AvARRAY (av)[0]) > 0) 3226 if (SvIVX (AvARRAY (av)[0]) > 0)
2035 { 3227 {
… …
2040 { 3232 {
2041 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3233 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2042 3234
2043 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3235 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2044 frame->prepare = prepare_schedule; 3236 frame->prepare = prepare_schedule;
3237 /* to avoid race conditions when a woken-up coro gets terminated */
3238 /* we arrange for a temporary on_destroy that calls adjust (0) */
3239 frame->destroy = coro_semaphore_destroy;
2045 } 3240 }
3241}
2046 3242
3243static void
3244slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3245{
3246 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2047 frame->check = slf_check_semaphore_down; 3247 frame->check = slf_check_semaphore_down;
3248}
2048 3249
3250static void
3251slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3252{
3253 if (items >= 2)
3254 {
3255 /* callback form */
3256 AV *av = (AV *)SvRV (arg [0]);
3257 SV *cb_cv = s_get_cv_croak (arg [1]);
3258
3259 av_push (av, SvREFCNT_inc_NN (cb_cv));
3260
3261 if (SvIVX (AvARRAY (av)[0]) > 0)
3262 coro_semaphore_adjust (aTHX_ av, 0);
3263
3264 frame->prepare = prepare_nop;
3265 frame->check = slf_check_nop;
3266 }
3267 else
3268 {
3269 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3270 frame->check = slf_check_semaphore_wait;
3271 }
3272}
3273
3274/* signal */
3275
3276static void
3277coro_signal_wake (pTHX_ AV *av, int count)
3278{
3279 SvIVX (AvARRAY (av)[0]) = 0;
3280
3281 /* now signal count waiters */
3282 while (count > 0 && AvFILLp (av) > 0)
3283 {
3284 SV *cb;
3285
3286 /* swap first two elements so we can shift a waiter */
3287 cb = AvARRAY (av)[0];
3288 AvARRAY (av)[0] = AvARRAY (av)[1];
3289 AvARRAY (av)[1] = cb;
3290
3291 cb = av_shift (av);
3292
3293 if (SvTYPE (cb) == SVt_PVCV)
3294 {
3295 dSP;
3296 PUSHMARK (SP);
3297 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3298 PUTBACK;
3299 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3300 }
3301 else
3302 {
3303 api_ready (aTHX_ cb);
3304 sv_setiv (cb, 0); /* signal waiter */
3305 }
3306
3307 SvREFCNT_dec_NN (cb);
3308
3309 --count;
3310 }
3311}
3312
3313static int
3314slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3315{
3316 /* if we are about to throw, also stop waiting */
3317 return SvROK ((SV *)frame->data) && !CORO_THROW;
3318}
3319
3320static void
3321slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3322{
3323 AV *av = (AV *)SvRV (arg [0]);
3324
3325 if (items >= 2)
3326 {
3327 SV *cb_cv = s_get_cv_croak (arg [1]);
3328 av_push (av, SvREFCNT_inc_NN (cb_cv));
3329
3330 if (SvIVX (AvARRAY (av)[0]))
3331 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3332
3333 frame->prepare = prepare_nop;
3334 frame->check = slf_check_nop;
3335 }
3336 else if (SvIVX (AvARRAY (av)[0]))
3337 {
3338 SvIVX (AvARRAY (av)[0]) = 0;
3339 frame->prepare = prepare_nop;
3340 frame->check = slf_check_nop;
3341 }
3342 else
3343 {
3344 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3345
3346 av_push (av, waiter);
3347
3348 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3349 frame->prepare = prepare_schedule;
3350 frame->check = slf_check_signal_wait;
3351 }
2049} 3352}
2050 3353
2051/*****************************************************************************/ 3354/*****************************************************************************/
3355/* Coro::AIO */
2052 3356
2053#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3357#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2054 3358
2055/* create a closure from XS, returns a code reference */ 3359/* helper storage struct */
2056/* the arg can be accessed via GENSUB_ARG from the callback */ 3360struct io_state
2057/* the callback must use dXSARGS/XSRETURN */ 3361{
3362 int errorno;
3363 I32 laststype; /* U16 in 5.10.0 */
3364 int laststatval;
3365 Stat_t statcache;
3366};
3367
3368static void
3369coro_aio_callback (pTHX_ CV *cv)
3370{
3371 dXSARGS;
3372 AV *state = (AV *)S_GENSUB_ARG;
3373 SV *coro = av_pop (state);
3374 SV *data_sv = newSV (sizeof (struct io_state));
3375
3376 av_extend (state, items - 1);
3377
3378 sv_upgrade (data_sv, SVt_PV);
3379 SvCUR_set (data_sv, sizeof (struct io_state));
3380 SvPOK_only (data_sv);
3381
3382 {
3383 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3384
3385 data->errorno = errno;
3386 data->laststype = PL_laststype;
3387 data->laststatval = PL_laststatval;
3388 data->statcache = PL_statcache;
3389 }
3390
3391 /* now build the result vector out of all the parameters and the data_sv */
3392 {
3393 int i;
3394
3395 for (i = 0; i < items; ++i)
3396 av_push (state, SvREFCNT_inc_NN (ST (i)));
3397 }
3398
3399 av_push (state, data_sv);
3400
3401 api_ready (aTHX_ coro);
3402 SvREFCNT_dec_NN (coro);
3403 SvREFCNT_dec_NN ((AV *)state);
3404}
3405
3406static int
3407slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3408{
3409 AV *state = (AV *)frame->data;
3410
3411 /* if we are about to throw, return early */
3412 /* this does not cancel the aio request, but at least */
3413 /* it quickly returns */
3414 if (CORO_THROW)
3415 return 0;
3416
3417 /* one element that is an RV? repeat! */
3418 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3419 return 1;
3420
3421 /* restore status */
3422 {
3423 SV *data_sv = av_pop (state);
3424 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3425
3426 errno = data->errorno;
3427 PL_laststype = data->laststype;
3428 PL_laststatval = data->laststatval;
3429 PL_statcache = data->statcache;
3430
3431 SvREFCNT_dec_NN (data_sv);
3432 }
3433
3434 /* push result values */
3435 {
3436 dSP;
3437 int i;
3438
3439 EXTEND (SP, AvFILLp (state) + 1);
3440 for (i = 0; i <= AvFILLp (state); ++i)
3441 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3442
3443 PUTBACK;
3444 }
3445
3446 return 0;
3447}
3448
3449static void
3450slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3451{
3452 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3453 SV *coro_hv = SvRV (coro_current);
3454 struct coro *coro = SvSTATE_hv (coro_hv);
3455
3456 /* put our coroutine id on the state arg */
3457 av_push (state, SvREFCNT_inc_NN (coro_hv));
3458
3459 /* first see whether we have a non-zero priority and set it as AIO prio */
3460 if (coro->prio)
3461 {
3462 dSP;
3463
3464 static SV *prio_cv;
3465 static SV *prio_sv;
3466
3467 if (ecb_expect_false (!prio_cv))
3468 {
3469 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3470 prio_sv = newSViv (0);
3471 }
3472
3473 PUSHMARK (SP);
3474 sv_setiv (prio_sv, coro->prio);
3475 XPUSHs (prio_sv);
3476
3477 PUTBACK;
3478 call_sv (prio_cv, G_VOID | G_DISCARD);
3479 }
3480
3481 /* now call the original request */
3482 {
3483 dSP;
3484 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3485 int i;
3486
3487 PUSHMARK (SP);
3488
3489 /* first push all args to the stack */
3490 EXTEND (SP, items + 1);
3491
3492 for (i = 0; i < items; ++i)
3493 PUSHs (arg [i]);
3494
3495 /* now push the callback closure */
3496 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3497
3498 /* now call the AIO function - we assume our request is uncancelable */
3499 PUTBACK;
3500 call_sv ((SV *)req, G_VOID | G_DISCARD);
3501 }
3502
3503 /* now that the request is going, we loop till we have a result */
3504 frame->data = (void *)state;
3505 frame->prepare = prepare_schedule;
3506 frame->check = slf_check_aio_req;
3507}
3508
3509static void
3510coro_aio_req_xs (pTHX_ CV *cv)
3511{
3512 dXSARGS;
3513
3514 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3515
3516 XSRETURN_EMPTY;
3517}
3518
3519/*****************************************************************************/
3520
3521#if CORO_CLONE
3522# include "clone.c"
3523#endif
3524
3525/*****************************************************************************/
3526
2058static SV * 3527static SV *
2059gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3528coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2060{ 3529{
2061 CV *cv = (CV *)NEWSV (0, 0); 3530 SV *coro_sv;
3531 struct coro *coro;
3532 MAGIC *mg;
3533 HV *hv;
3534 SV *cb;
3535 int i;
2062 3536
2063 sv_upgrade ((SV *)cv, SVt_PVCV); 3537 if (argc > 0)
3538 {
3539 cb = s_get_cv_croak (argv [0]);
2064 3540
2065 CvANON_on (cv); 3541 if (!is_coro)
2066 CvISXSUB_on (cv); 3542 {
2067 CvXSUB (cv) = xsub; 3543 if (CvISXSUB (cb))
2068 GENSUB_ARG = arg; 3544 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2069 3545
2070 return newRV_noinc ((SV *)cv); 3546 if (!CvROOT (cb))
2071} 3547 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3548 }
3549 }
2072 3550
2073/*****************************************************************************/ 3551 Newz (0, coro, 1, struct coro);
3552 coro->args = newAV ();
3553 coro->flags = CF_NEW;
3554
3555 if (coro_first) coro_first->prev = coro;
3556 coro->next = coro_first;
3557 coro_first = coro;
3558
3559 coro->hv = hv = newHV ();
3560 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3561 mg->mg_flags |= MGf_DUP;
3562 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3563
3564 if (argc > 0)
3565 {
3566 av_extend (coro->args, argc + is_coro - 1);
3567
3568 if (is_coro)
3569 {
3570 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3571 cb = (SV *)cv_coro_run;
3572 }
3573
3574 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3575
3576 for (i = 1; i < argc; i++)
3577 av_push (coro->args, newSVsv (argv [i]));
3578 }
3579
3580 return coro_sv;
3581}
3582
3583#ifndef __cplusplus
3584ecb_cold XS(boot_Coro__State);
3585#endif
3586
3587#if CORO_JIT
3588
3589static void ecb_noinline ecb_cold
3590pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3591{
3592 dSP;
3593 AV *av = newAV ();
3594
3595 av_store (av, 3, newSVuv (d));
3596 av_store (av, 2, newSVuv (c));
3597 av_store (av, 1, newSVuv (b));
3598 av_store (av, 0, newSVuv (a));
3599
3600 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3601
3602 PUTBACK;
3603}
3604
3605static void ecb_noinline ecb_cold
3606jit_init (pTHX)
3607{
3608 dSP;
3609 SV *load, *save;
3610 char *map_base;
3611 char *load_ptr, *save_ptr;
3612 STRLEN load_len, save_len, map_len;
3613 int count;
3614
3615 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3616
3617 PUSHMARK (SP);
3618 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3619 #include "state.h"
3620 count = call_pv ("Coro::State::_jit", G_ARRAY);
3621 SPAGAIN;
3622
3623 save = POPs; save_ptr = SvPVbyte (save, save_len);
3624 load = POPs; load_ptr = SvPVbyte (load, load_len);
3625
3626 map_len = load_len + save_len + 16;
3627
3628 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3629
3630 if (map_base == (char *)MAP_FAILED)
3631 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3632
3633 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3634
3635 load_perl_slots = (load_save_perl_slots_type)map_base;
3636 memcpy (map_base, load_ptr, load_len);
3637
3638 map_base += (load_len + 15) & ~15;
3639
3640 save_perl_slots = (load_save_perl_slots_type)map_base;
3641 memcpy (map_base, save_ptr, save_len);
3642
3643 /* we are good citizens and try to make the page read-only, so the evil evil */
3644 /* hackers might have it a bit more difficult */
3645 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3646
3647 PUTBACK;
3648 eval_pv ("undef &Coro::State::_jit", 1);
3649}
3650
3651#endif
2074 3652
2075MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3653MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2076 3654
2077PROTOTYPES: DISABLE 3655PROTOTYPES: DISABLE
2078 3656
2079BOOT: 3657BOOT:
2080{ 3658{
3659#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3660#include "state.h"
2081#ifdef USE_ITHREADS 3661#ifdef USE_ITHREADS
2082 MUTEX_INIT (&coro_lock);
2083# if CORO_PTHREAD 3662# if CORO_PTHREAD
2084 coro_thx = PERL_GET_CONTEXT; 3663 coro_thx = PERL_GET_CONTEXT;
2085# endif 3664# endif
2086#endif 3665#endif
2087 BOOT_PAGESIZE; 3666 /* perl defines these to check for existance first, but why it doesn't */
3667 /* just create them one at init time is not clear to me, except for */
3668 /* programs trying to delete them, but... */
3669 /* anyway, we declare this as invalid and make sure they are initialised here */
3670 DEFSV;
3671 ERRSV;
3672
3673 cctx_current = cctx_new_empty ();
2088 3674
2089 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3675 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2090 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3676 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2091 3677
2092 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3678 {
2093 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3679 /*
2094 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3680 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3681 * by coro_sig_vtbl in hash values.
3682 */
3683 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3684
3685 /* this only works if perl doesn't have a vtbl for %SIG */
3686 assert (!mg->mg_virtual);
3687
3688 /*
3689 * The irony is that the perl API itself asserts that mg_virtual
3690 * must be non-const, yet perl5porters insisted on marking their
3691 * vtbls as read-only, just to thwart perl modules from patching
3692 * them.
3693 */
3694 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3695 mg->mg_flags |= MGf_COPY;
3696
3697 coro_sigelem_vtbl = PL_vtbl_sigelem;
3698 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3699 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3700 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3701 }
2095 3702
2096 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2097 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3703 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2098 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3704 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2099 3705
2100 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3706 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3707
3708 newCONSTSUB (coro_state_stash, "BACKEND", newSVpv (CORO_BACKEND, 0)); /* undocumented */
2101 3709
2102 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3710 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2103 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3711 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
2104 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3712 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
2105 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3713 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
2107 main_mainstack = PL_mainstack; 3715 main_mainstack = PL_mainstack;
2108 main_top_env = PL_top_env; 3716 main_top_env = PL_top_env;
2109 3717
2110 while (main_top_env->je_prev) 3718 while (main_top_env->je_prev)
2111 main_top_env = main_top_env->je_prev; 3719 main_top_env = main_top_env->je_prev;
3720
3721 {
3722 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3723
3724 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3725 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3726
3727 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3728 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3729 }
2112 3730
2113 coroapi.ver = CORO_API_VERSION; 3731 coroapi.ver = CORO_API_VERSION;
2114 coroapi.rev = CORO_API_REVISION; 3732 coroapi.rev = CORO_API_REVISION;
2115 3733
2116 coroapi.transfer = api_transfer; 3734 coroapi.transfer = api_transfer;
… …
2120 coroapi.prepare_nop = prepare_nop; 3738 coroapi.prepare_nop = prepare_nop;
2121 coroapi.prepare_schedule = prepare_schedule; 3739 coroapi.prepare_schedule = prepare_schedule;
2122 coroapi.prepare_cede = prepare_cede; 3740 coroapi.prepare_cede = prepare_cede;
2123 coroapi.prepare_cede_notself = prepare_cede_notself; 3741 coroapi.prepare_cede_notself = prepare_cede_notself;
2124 3742
2125 { 3743 time_init (aTHX);
2126 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2127 3744
2128 if (!svp) croak ("Time::HiRes is required");
2129 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2130
2131 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2132 }
2133
2134 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3745 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3746#if CORO_JIT
3747 PUTBACK;
3748 jit_init (aTHX);
3749 SPAGAIN;
3750#endif
2135} 3751}
2136 3752
2137SV * 3753SV *
2138new (char *klass, ...) 3754new (SV *klass, ...)
3755 ALIAS:
3756 Coro::new = 1
2139 CODE: 3757 CODE:
2140{ 3758 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2141 struct coro *coro; 3759 OUTPUT:
2142 MAGIC *mg;
2143 HV *hv;
2144 int i;
2145
2146 Newz (0, coro, 1, struct coro);
2147 coro->args = newAV ();
2148 coro->flags = CF_NEW;
2149
2150 if (coro_first) coro_first->prev = coro;
2151 coro->next = coro_first;
2152 coro_first = coro;
2153
2154 coro->hv = hv = newHV ();
2155 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2156 mg->mg_flags |= MGf_DUP;
2157 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2158
2159 av_extend (coro->args, items - 1);
2160 for (i = 1; i < items; i++)
2161 av_push (coro->args, newSVsv (ST (i)));
2162}
2163 OUTPUT:
2164 RETVAL 3760 RETVAL
2165
2166void
2167_set_stacklevel (...)
2168 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2170 3761
2171void 3762void
2172transfer (...) 3763transfer (...)
2173 PROTOTYPE: $$ 3764 PROTOTYPE: $$
2174 CODE: 3765 CODE:
2175 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3766 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2176 3767
2177bool 3768SV *
2178_destroy (SV *coro_sv) 3769clone (Coro::State coro)
2179 CODE: 3770 CODE:
2180 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3771{
3772#if CORO_CLONE
3773 struct coro *ncoro = coro_clone (aTHX_ coro);
3774 MAGIC *mg;
3775 /* TODO: too much duplication */
3776 ncoro->hv = newHV ();
3777 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3778 mg->mg_flags |= MGf_DUP;
3779 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3780#else
3781 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3782#endif
3783}
2181 OUTPUT: 3784 OUTPUT:
2182 RETVAL 3785 RETVAL
2183
2184void
2185_exit (int code)
2186 PROTOTYPE: $
2187 CODE:
2188 _exit (code);
2189 3786
2190int 3787int
2191cctx_stacksize (int new_stacksize = 0) 3788cctx_stacksize (int new_stacksize = 0)
2192 PROTOTYPE: ;$ 3789 PROTOTYPE: ;$
2193 CODE: 3790 CODE:
… …
2229void 3826void
2230list () 3827list ()
2231 PROTOTYPE: 3828 PROTOTYPE:
2232 PPCODE: 3829 PPCODE:
2233{ 3830{
2234 struct coro *coro; 3831 struct coro *coro;
2235 for (coro = coro_first; coro; coro = coro->next) 3832 for (coro = coro_first; coro; coro = coro->next)
2236 if (coro->hv) 3833 if (coro->hv)
2237 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3834 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2238} 3835}
2239 3836
… …
2241call (Coro::State coro, SV *coderef) 3838call (Coro::State coro, SV *coderef)
2242 ALIAS: 3839 ALIAS:
2243 eval = 1 3840 eval = 1
2244 CODE: 3841 CODE:
2245{ 3842{
3843 struct coro *current = SvSTATE_current;
3844
2246 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3845 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
2247 { 3846 {
2248 struct coro temp; 3847 struct CoroSLF slf_save;
2249 3848
2250 if (!(coro->flags & CF_RUNNING)) 3849 if (current != coro)
2251 { 3850 {
2252 PUTBACK; 3851 PUTBACK;
2253 save_perl (aTHX_ &temp); 3852 save_perl (aTHX_ current);
2254 load_perl (aTHX_ coro); 3853 load_perl (aTHX_ coro);
3854 /* the coro is most likely in an active SLF call.
3855 * while not strictly required (the code we execute is
3856 * not allowed to call any SLF functions), it's cleaner
3857 * to reinitialise the slf_frame and restore it later.
3858 * This might one day allow us to actually do SLF calls
3859 * from code executed here.
3860 */
3861 slf_save = slf_frame;
3862 slf_frame.prepare = 0;
3863 SPAGAIN;
2255 } 3864 }
2256 3865
2257 {
2258 dSP;
2259 ENTER;
2260 SAVETMPS;
2261 PUTBACK;
2262 PUSHSTACK; 3866 PUSHSTACK;
3867
2263 PUSHMARK (SP); 3868 PUSHMARK (SP);
3869 PUTBACK;
2264 3870
2265 if (ix) 3871 if (ix)
2266 eval_sv (coderef, 0); 3872 eval_sv (coderef, 0);
2267 else 3873 else
2268 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3874 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2269 3875
2270 POPSTACK; 3876 POPSTACK;
2271 SPAGAIN; 3877 SPAGAIN;
2272 FREETMPS;
2273 LEAVE;
2274 PUTBACK;
2275 }
2276 3878
2277 if (!(coro->flags & CF_RUNNING)) 3879 if (current != coro)
2278 { 3880 {
3881 PUTBACK;
3882 slf_frame = slf_save;
2279 save_perl (aTHX_ coro); 3883 save_perl (aTHX_ coro);
2280 load_perl (aTHX_ &temp); 3884 load_perl (aTHX_ current);
2281 SPAGAIN; 3885 SPAGAIN;
2282 } 3886 }
2283 } 3887 }
2284} 3888}
2285 3889
… …
2288 PROTOTYPE: $ 3892 PROTOTYPE: $
2289 ALIAS: 3893 ALIAS:
2290 is_ready = CF_READY 3894 is_ready = CF_READY
2291 is_running = CF_RUNNING 3895 is_running = CF_RUNNING
2292 is_new = CF_NEW 3896 is_new = CF_NEW
2293 is_destroyed = CF_DESTROYED 3897 is_destroyed = CF_ZOMBIE
3898 is_zombie = CF_ZOMBIE
3899 is_suspended = CF_SUSPENDED
2294 CODE: 3900 CODE:
2295 RETVAL = boolSV (coro->flags & ix); 3901 RETVAL = boolSV (coro->flags & ix);
2296 OUTPUT: 3902 OUTPUT:
2297 RETVAL 3903 RETVAL
2298 3904
2299void 3905void
2300throw (Coro::State self, SV *throw = &PL_sv_undef) 3906throw (SV *self, SV *exception = &PL_sv_undef)
2301 PROTOTYPE: $;$ 3907 PROTOTYPE: $;$
2302 CODE: 3908 CODE:
3909{
3910 struct coro *coro = SvSTATE (self);
3911 struct coro *current = SvSTATE_current;
3912 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2303 SvREFCNT_dec (self->throw); 3913 SvREFCNT_dec (*exceptionp);
2304 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3914 SvGETMAGIC (exception);
3915 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3916
3917 api_ready (aTHX_ self);
3918}
2305 3919
2306void 3920void
2307api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3921api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2308 PROTOTYPE: $;$ 3922 PROTOTYPE: $;$
2309 C_ARGS: aTHX_ coro, flags 3923 C_ARGS: aTHX_ coro, flags
2310 3924
2311SV * 3925SV *
2312has_cctx (Coro::State coro) 3926has_cctx (Coro::State coro)
2313 PROTOTYPE: $ 3927 PROTOTYPE: $
2314 CODE: 3928 CODE:
2315 RETVAL = boolSV (!!coro->cctx); 3929 /* maybe manage the running flag differently */
3930 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2316 OUTPUT: 3931 OUTPUT:
2317 RETVAL 3932 RETVAL
2318 3933
2319int 3934int
2320is_traced (Coro::State coro) 3935is_traced (Coro::State coro)
… …
2340 3955
2341void 3956void
2342force_cctx () 3957force_cctx ()
2343 PROTOTYPE: 3958 PROTOTYPE:
2344 CODE: 3959 CODE:
2345 struct coro *coro = SvSTATE (coro_current);
2346 coro->cctx->idle_sp = 0; 3960 cctx_current->idle_sp = 0;
2347 3961
2348void 3962void
2349swap_defsv (Coro::State self) 3963swap_defsv (Coro::State self)
2350 PROTOTYPE: $ 3964 PROTOTYPE: $
2351 ALIAS: 3965 ALIAS:
… …
2359 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3973 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2360 3974
2361 SV *tmp = *src; *src = *dst; *dst = tmp; 3975 SV *tmp = *src; *src = *dst; *dst = tmp;
2362 } 3976 }
2363 3977
3978void
3979cancel (Coro::State self)
3980 CODE:
3981 coro_state_destroy (aTHX_ self);
3982
3983SV *
3984enable_times (int enabled = enable_times)
3985 CODE:
3986{
3987 RETVAL = boolSV (enable_times);
3988
3989 if (enabled != enable_times)
3990 {
3991 enable_times = enabled;
3992
3993 coro_times_update ();
3994 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3995 }
3996}
3997 OUTPUT:
3998 RETVAL
3999
4000void
4001times (Coro::State self)
4002 PPCODE:
4003{
4004 struct coro *current = SvSTATE (coro_current);
4005
4006 if (ecb_expect_false (current == self))
4007 {
4008 coro_times_update ();
4009 coro_times_add (SvSTATE (coro_current));
4010 }
4011
4012 EXTEND (SP, 2);
4013 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
4014 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
4015
4016 if (ecb_expect_false (current == self))
4017 coro_times_sub (SvSTATE (coro_current));
4018}
4019
4020void
4021swap_sv (Coro::State coro, SV *sva, SV *svb)
4022 CODE:
4023{
4024 struct coro *current = SvSTATE_current;
4025 AV *swap_sv;
4026 int i;
4027
4028 sva = SvRV (sva);
4029 svb = SvRV (svb);
4030
4031 if (current == coro)
4032 SWAP_SVS_LEAVE (current);
4033
4034 if (!coro->swap_sv)
4035 coro->swap_sv = newAV ();
4036
4037 swap_sv = coro->swap_sv;
4038
4039 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4040 {
4041 SV *a = AvARRAY (swap_sv)[i ];
4042 SV *b = AvARRAY (swap_sv)[i + 1];
4043
4044 if (a == sva && b == svb)
4045 {
4046 SvREFCNT_dec_NN (a);
4047 SvREFCNT_dec_NN (b);
4048
4049 for (; i <= AvFILLp (swap_sv) - 2; i++)
4050 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4051
4052 AvFILLp (swap_sv) -= 2;
4053
4054 goto removed;
4055 }
4056 }
4057
4058 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4059 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4060
4061 removed:
4062
4063 if (current == coro)
4064 SWAP_SVS_ENTER (current);
4065}
4066
4067
2364MODULE = Coro::State PACKAGE = Coro 4068MODULE = Coro::State PACKAGE = Coro
2365 4069
2366BOOT: 4070BOOT:
2367{ 4071{
2368 int i; 4072 if (SVt_LAST > 32)
4073 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2369 4074
2370 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2371 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4075 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2372 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4076 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2373 4077 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2374 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4078 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2375 SvREADONLY_on (coro_current); 4079 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4080 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4081 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4082 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4083
4084 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4085 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4086 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4087 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2376 4088
2377 coro_stash = gv_stashpv ("Coro", TRUE); 4089 coro_stash = gv_stashpv ("Coro", TRUE);
2378 4090
2379 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4091 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2380 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4092 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2381 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4093 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2382 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4094 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2383 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4095 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2384 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4096 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2385
2386 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2387 coro_ready[i] = newAV ();
2388 4097
2389 { 4098 {
2390 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4099 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2391 4100
2392 coroapi.schedule = api_schedule; 4101 coroapi.schedule = api_schedule;
4102 coroapi.schedule_to = api_schedule_to;
2393 coroapi.cede = api_cede; 4103 coroapi.cede = api_cede;
2394 coroapi.cede_notself = api_cede_notself; 4104 coroapi.cede_notself = api_cede_notself;
2395 coroapi.ready = api_ready; 4105 coroapi.ready = api_ready;
2396 coroapi.is_ready = api_is_ready; 4106 coroapi.is_ready = api_is_ready;
2397 coroapi.nready = coro_nready; 4107 coroapi.nready = coro_nready;
2398 coroapi.current = coro_current; 4108 coroapi.current = coro_current;
2399 4109
4110 coroapi.enterleave_hook = api_enterleave_hook;
4111 coroapi.enterleave_unhook = api_enterleave_unhook;
4112 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4113
2400 GCoroAPI = &coroapi; 4114 /*GCoroAPI = &coroapi;*/
2401 sv_setiv (sv, (IV)&coroapi); 4115 sv_setiv (sv, PTR2IV (&coroapi));
2402 SvREADONLY_on (sv); 4116 SvREADONLY_on (sv);
2403 } 4117 }
2404} 4118}
4119
4120SV *
4121async (...)
4122 PROTOTYPE: &@
4123 CODE:
4124 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4125 api_ready (aTHX_ RETVAL);
4126 OUTPUT:
4127 RETVAL
4128
4129void
4130_destroy (Coro::State coro)
4131 CODE:
4132 /* used by the manager thread */
4133 coro_state_destroy (aTHX_ coro);
4134
4135void
4136on_destroy (Coro::State coro, SV *cb)
4137 CODE:
4138 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4139
4140void
4141join (...)
4142 CODE:
4143 CORO_EXECUTE_SLF_XS (slf_init_join);
4144
4145void
4146terminate (...)
4147 CODE:
4148 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4149
4150void
4151cancel (...)
4152 CODE:
4153 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4154
4155int
4156safe_cancel (Coro::State self, ...)
4157 C_ARGS: aTHX_ self, &ST (1), items - 1
2405 4158
2406void 4159void
2407schedule (...) 4160schedule (...)
2408 CODE: 4161 CODE:
2409 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 4162 CORO_EXECUTE_SLF_XS (slf_init_schedule);
4163
4164void
4165schedule_to (...)
4166 CODE:
4167 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4168
4169void
4170cede_to (...)
4171 CODE:
4172 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2410 4173
2411void 4174void
2412cede (...) 4175cede (...)
2413 CODE: 4176 CODE:
2414 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 4177 CORO_EXECUTE_SLF_XS (slf_init_cede);
2415 4178
2416void 4179void
2417cede_notself (...) 4180cede_notself (...)
2418 CODE: 4181 CODE:
2419 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 4182 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2420 4183
2421void 4184void
2422_set_current (SV *current) 4185_set_current (SV *current)
2423 PROTOTYPE: $ 4186 PROTOTYPE: $
2424 CODE: 4187 CODE:
2425 SvREFCNT_dec (SvRV (coro_current)); 4188 SvREFCNT_dec_NN (SvRV (coro_current));
2426 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4189 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2427 4190
2428void 4191void
2429_set_readyhook (SV *hook) 4192_set_readyhook (SV *hook)
2430 PROTOTYPE: $ 4193 PROTOTYPE: $
2431 CODE: 4194 CODE:
2432 LOCK;
2433 SvREFCNT_dec (coro_readyhook); 4195 SvREFCNT_dec (coro_readyhook);
4196 SvGETMAGIC (hook);
4197 if (SvOK (hook))
4198 {
2434 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4199 coro_readyhook = newSVsv (hook);
2435 UNLOCK; 4200 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4201 }
4202 else
4203 {
4204 coro_readyhook = 0;
4205 CORO_READYHOOK = 0;
4206 }
2436 4207
2437int 4208int
2438prio (Coro::State coro, int newprio = 0) 4209prio (Coro::State coro, int newprio = 0)
2439 PROTOTYPE: $;$ 4210 PROTOTYPE: $;$
2440 ALIAS: 4211 ALIAS:
… …
2446 if (items > 1) 4217 if (items > 1)
2447 { 4218 {
2448 if (ix) 4219 if (ix)
2449 newprio = coro->prio - newprio; 4220 newprio = coro->prio - newprio;
2450 4221
2451 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4222 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2452 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4223 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2453 4224
2454 coro->prio = newprio; 4225 coro->prio = newprio;
2455 } 4226 }
2456} 4227}
2457 OUTPUT: 4228 OUTPUT:
… …
2471 CODE: 4242 CODE:
2472 RETVAL = coro_nready; 4243 RETVAL = coro_nready;
2473 OUTPUT: 4244 OUTPUT:
2474 RETVAL 4245 RETVAL
2475 4246
2476# for async_pool speedup
2477void 4247void
2478_pool_1 (SV *cb) 4248suspend (Coro::State self)
4249 PROTOTYPE: $
2479 CODE: 4250 CODE:
2480{ 4251 self->flags |= CF_SUSPENDED;
2481 struct coro *coro = SvSTATE (coro_current);
2482 HV *hv = (HV *)SvRV (coro_current);
2483 AV *defav = GvAV (PL_defgv);
2484 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2485 AV *invoke_av;
2486 int i, len;
2487 4252
2488 if (!invoke) 4253void
4254resume (Coro::State self)
4255 PROTOTYPE: $
4256 CODE:
4257 self->flags &= ~CF_SUSPENDED;
4258
4259void
4260_pool_handler (...)
4261 CODE:
4262 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4263
4264void
4265async_pool (SV *cv, ...)
4266 PROTOTYPE: &@
4267 PPCODE:
4268{
4269 HV *hv = (HV *)av_pop (av_async_pool);
4270 AV *av = newAV ();
4271 SV *cb = ST (0);
4272 int i;
4273
4274 av_extend (av, items - 2);
4275 for (i = 1; i < items; ++i)
4276 av_push (av, SvREFCNT_inc_NN (ST (i)));
4277
4278 if ((SV *)hv == &PL_sv_undef)
2489 { 4279 {
2490 SV *old = PL_diehook; 4280 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2491 PL_diehook = 0; 4281 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2492 SvREFCNT_dec (old); 4282 SvREFCNT_dec_NN (sv);
2493 croak ("\3async_pool terminate\2\n");
2494 } 4283 }
2495 4284
2496 SvREFCNT_dec (coro->saved_deffh);
2497 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2498
2499 hv_store (hv, "desc", sizeof ("desc") - 1,
2500 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2501
2502 invoke_av = (AV *)SvRV (invoke);
2503 len = av_len (invoke_av);
2504
2505 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2506
2507 if (len > 0)
2508 { 4285 {
2509 av_fill (defav, len - 1); 4286 struct coro *coro = SvSTATE_hv (hv);
2510 for (i = 0; i < len; ++i) 4287
2511 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4288 assert (!coro->invoke_cb);
4289 assert (!coro->invoke_av);
4290 coro->invoke_cb = SvREFCNT_inc (cb);
4291 coro->invoke_av = av;
2512 } 4292 }
4293
4294 api_ready (aTHX_ (SV *)hv);
4295
4296 if (GIMME_V != G_VOID)
4297 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4298 else
4299 SvREFCNT_dec_NN (hv);
2513} 4300}
4301
4302SV *
4303rouse_cb ()
4304 PROTOTYPE:
4305 CODE:
4306 RETVAL = coro_new_rouse_cb (aTHX);
4307 OUTPUT:
4308 RETVAL
2514 4309
2515void 4310void
2516_pool_2 (SV *cb) 4311rouse_wait (...)
4312 PROTOTYPE: ;$
4313 PPCODE:
4314 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4315
4316void
4317on_enter (SV *block)
4318 ALIAS:
4319 on_leave = 1
4320 PROTOTYPE: &
2517 CODE: 4321 CODE:
2518{ 4322{
2519 struct coro *coro = SvSTATE (coro_current); 4323 struct coro *coro = SvSTATE_current;
4324 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2520 4325
2521 sv_setsv (cb, &PL_sv_undef); 4326 block = s_get_cv_croak (block);
2522 4327
2523 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4328 if (!*avp)
2524 coro->saved_deffh = 0;
2525
2526 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2527 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2528 {
2529 SV *old = PL_diehook;
2530 PL_diehook = 0;
2531 SvREFCNT_dec (old);
2532 croak ("\3async_pool terminate\2\n");
2533 }
2534
2535 av_clear (GvAV (PL_defgv));
2536 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2537 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2538
2539 coro->prio = 0;
2540
2541 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2542 api_trace (aTHX_ coro_current, 0);
2543
2544 av_push (av_async_pool, newSVsv (coro_current));
2545}
2546
2547
2548MODULE = Coro::State PACKAGE = Coro::AIO
2549
2550void
2551_get_state (SV *self)
2552 PROTOTYPE: $
2553 PPCODE:
2554{
2555 AV *defav = GvAV (PL_defgv);
2556 AV *av = newAV (); 4329 *avp = newAV ();
2557 int i;
2558 SV *data_sv = newSV (sizeof (struct io_state));
2559 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2560 SvCUR_set (data_sv, sizeof (struct io_state));
2561 SvPOK_only (data_sv);
2562 4330
2563 data->errorno = errno; 4331 av_push (*avp, SvREFCNT_inc (block));
2564 data->laststype = PL_laststype;
2565 data->laststatval = PL_laststatval;
2566 data->statcache = PL_statcache;
2567 4332
2568 av_extend (av, AvFILLp (defav) + 1 + 1); 4333 if (!ix)
4334 on_enterleave_call (aTHX_ block);
2569 4335
2570 for (i = 0; i <= AvFILLp (defav); ++i) 4336 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2571 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4337 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2572 4338 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2573 av_push (av, data_sv);
2574
2575 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2576
2577 api_ready (aTHX_ self);
2578}
2579
2580void
2581_set_state (SV *state)
2582 PROTOTYPE: $
2583 PPCODE:
2584{
2585 AV *av = (AV *)SvRV (state);
2586 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2587 int i;
2588
2589 errno = data->errorno;
2590 PL_laststype = data->laststype;
2591 PL_laststatval = data->laststatval;
2592 PL_statcache = data->statcache;
2593
2594 EXTEND (SP, AvFILLp (av));
2595 for (i = 0; i < AvFILLp (av); ++i)
2596 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2597}
2598
2599
2600MODULE = Coro::State PACKAGE = Coro::AnyEvent
2601
2602BOOT:
2603 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2604
2605void
2606_schedule (...)
2607 CODE:
2608{
2609 static int incede;
2610
2611 api_cede_notself (aTHX);
2612
2613 ++incede;
2614 while (coro_nready >= incede && api_cede (aTHX))
2615 ;
2616
2617 sv_setsv (sv_activity, &PL_sv_undef);
2618 if (coro_nready >= incede)
2619 {
2620 PUSHMARK (SP);
2621 PUTBACK;
2622 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2623 SPAGAIN;
2624 }
2625
2626 --incede;
2627} 4339}
2628 4340
2629 4341
2630MODULE = Coro::State PACKAGE = PerlIO::cede 4342MODULE = Coro::State PACKAGE = PerlIO::cede
2631 4343
2632BOOT: 4344BOOT:
2633 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4345 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2634 4346
4347
2635MODULE = Coro::State PACKAGE = Coro::Semaphore 4348MODULE = Coro::State PACKAGE = Coro::Semaphore
2636 4349
2637SV * 4350SV *
2638new (SV *klass, SV *count_ = 0) 4351new (SV *klass, SV *count = 0)
2639 CODE: 4352 CODE:
2640{ 4353{
2641 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4354 int semcnt = 1;
2642 AV *av = newAV (); 4355
2643 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4356 if (count)
2644 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4357 {
4358 SvGETMAGIC (count);
4359
4360 if (SvOK (count))
4361 semcnt = SvIV (count);
4362 }
4363
4364 RETVAL = sv_bless (
4365 coro_waitarray_new (aTHX_ semcnt),
4366 GvSTASH (CvGV (cv))
4367 );
2645} 4368}
4369 OUTPUT:
4370 RETVAL
4371
4372# helper for Coro::Channel and others
4373SV *
4374_alloc (int count)
4375 CODE:
4376 RETVAL = coro_waitarray_new (aTHX_ count);
2646 OUTPUT: 4377 OUTPUT:
2647 RETVAL 4378 RETVAL
2648 4379
2649SV * 4380SV *
2650count (SV *self) 4381count (SV *self)
… …
2652 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4383 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
2653 OUTPUT: 4384 OUTPUT:
2654 RETVAL 4385 RETVAL
2655 4386
2656void 4387void
2657up (SV *self, int adjust = 1) 4388up (SV *self)
2658 ALIAS:
2659 adjust = 1
2660 CODE: 4389 CODE:
2661{ 4390 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
2662 AV *av = (AV *)SvRV (self);
2663 SV *count_sv = AvARRAY (av)[0];
2664 IV count = SvIVX (count_sv);
2665
2666 count += ix ? adjust : 1;
2667 SvIVX (count_sv) = count;
2668
2669 /* now wake up as many waiters as possible */
2670 while (count > 0 && AvFILLp (av) >= count)
2671 {
2672 SV *cb;
2673
2674 /* swap first two elements so we can shift a waiter */
2675 AvARRAY (av)[0] = AvARRAY (av)[1];
2676 AvARRAY (av)[1] = count_sv;
2677 cb = av_shift (av);
2678
2679 if (SvOBJECT (cb))
2680 api_ready (aTHX_ cb);
2681 else
2682 croak ("callbacks not yet supported");
2683
2684 SvREFCNT_dec (cb);
2685 }
2686}
2687 4391
2688void 4392void
2689down (SV *self) 4393adjust (SV *self, int adjust)
2690 CODE: 4394 CODE:
2691 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4395 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4396
4397void
4398down (...)
4399 CODE:
4400 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4401
4402void
4403wait (...)
4404 CODE:
4405 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2692 4406
2693void 4407void
2694try (SV *self) 4408try (SV *self)
2695 PPCODE: 4409 PPCODE:
2696{ 4410{
… …
2708 XSRETURN_NO; 4422 XSRETURN_NO;
2709} 4423}
2710 4424
2711void 4425void
2712waiters (SV *self) 4426waiters (SV *self)
2713 CODE: 4427 PPCODE:
2714{ 4428{
2715 AV *av = (AV *)SvRV (self); 4429 AV *av = (AV *)SvRV (self);
4430 int wcount = AvFILLp (av) + 1 - 1;
2716 4431
2717 if (GIMME_V == G_SCALAR) 4432 if (GIMME_V == G_SCALAR)
2718 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4433 XPUSHs (sv_2mortal (newSViv (wcount)));
2719 else 4434 else
2720 { 4435 {
2721 int i; 4436 int i;
2722 EXTEND (SP, AvFILLp (av) + 1 - 1); 4437 EXTEND (SP, wcount);
2723 for (i = 1; i <= AvFILLp (av); ++i) 4438 for (i = 1; i <= wcount; ++i)
2724 PUSHs (newSVsv (AvARRAY (av)[i])); 4439 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2725 } 4440 }
2726} 4441}
2727 4442
4443MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4444
4445void
4446_may_delete (SV *sem, int count, unsigned int extra_refs)
4447 PPCODE:
4448{
4449 AV *av = (AV *)SvRV (sem);
4450
4451 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4452 && AvFILLp (av) == 0 /* no waiters, just count */
4453 && SvIV (AvARRAY (av)[0]) == count)
4454 XSRETURN_YES;
4455
4456 XSRETURN_NO;
4457}
4458
4459MODULE = Coro::State PACKAGE = Coro::Signal
4460
4461SV *
4462new (SV *klass)
4463 CODE:
4464 RETVAL = sv_bless (
4465 coro_waitarray_new (aTHX_ 0),
4466 GvSTASH (CvGV (cv))
4467 );
4468 OUTPUT:
4469 RETVAL
4470
4471void
4472wait (...)
4473 CODE:
4474 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4475
4476void
4477broadcast (SV *self)
4478 CODE:
4479{
4480 AV *av = (AV *)SvRV (self);
4481 coro_signal_wake (aTHX_ av, AvFILLp (av));
4482}
4483
4484void
4485send (SV *self)
4486 CODE:
4487{
4488 AV *av = (AV *)SvRV (self);
4489
4490 if (AvFILLp (av))
4491 coro_signal_wake (aTHX_ av, 1);
4492 else
4493 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4494}
4495
4496IV
4497awaited (SV *self)
4498 CODE:
4499 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4500 OUTPUT:
4501 RETVAL
4502
4503
4504MODULE = Coro::State PACKAGE = Coro::AnyEvent
4505
4506BOOT:
4507 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4508
4509void
4510_schedule (...)
4511 CODE:
4512{
4513 static int incede;
4514
4515 api_cede_notself (aTHX);
4516
4517 ++incede;
4518 while (coro_nready >= incede && api_cede (aTHX))
4519 ;
4520
4521 sv_setsv (sv_activity, &PL_sv_undef);
4522 if (coro_nready >= incede)
4523 {
4524 PUSHMARK (SP);
4525 PUTBACK;
4526 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4527 }
4528
4529 --incede;
4530}
4531
4532
4533MODULE = Coro::State PACKAGE = Coro::AIO
4534
4535void
4536_register (char *target, char *proto, SV *req)
4537 CODE:
4538{
4539 SV *req_cv = s_get_cv_croak (req);
4540 /* newXSproto doesn't return the CV on 5.8 */
4541 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4542 sv_setpv ((SV *)slf_cv, proto);
4543 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4544}
4545
4546MODULE = Coro::State PACKAGE = Coro::Select
4547
4548void
4549patch_pp_sselect ()
4550 CODE:
4551 if (!coro_old_pp_sselect)
4552 {
4553 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4554 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4555 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4556 }
4557
4558void
4559unpatch_pp_sselect ()
4560 CODE:
4561 if (coro_old_pp_sselect)
4562 {
4563 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4564 coro_old_pp_sselect = 0;
4565 }
4566
4567MODULE = Coro::State PACKAGE = Coro::Util
4568
4569void
4570_exit (int code)
4571 CODE:
4572 _exit (code);
4573
4574NV
4575time ()
4576 CODE:
4577 RETVAL = nvtime (aTHX);
4578 OUTPUT:
4579 RETVAL
4580
4581NV
4582gettimeofday ()
4583 PPCODE:
4584{
4585 UV tv [2];
4586 u2time (aTHX_ tv);
4587 EXTEND (SP, 2);
4588 PUSHs (sv_2mortal (newSVuv (tv [0])));
4589 PUSHs (sv_2mortal (newSVuv (tv [1])));
4590}
4591

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