ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.275 by root, Sat Nov 15 06:26:52 2008 UTC vs.
Revision 1.424 by root, Fri Nov 30 19:27:28 2012 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
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#if defined(_WIN32)
31# undef HAS_GETTIMEOFDAY
18# undef setjmp 32# undef setjmp
19# undef longjmp 33# undef longjmp
20# undef _exit 34# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 35# define setjmp _setjmp /* deep magic */
22#else 36#else
23# include <inttypes.h> /* most portable stdint.h */ 37# include <inttypes.h> /* most portable stdint.h */
24#endif 38#endif
25 39
26#ifdef HAVE_MMAP 40#if HAVE_MMAP
27# include <unistd.h> 41# include <unistd.h>
28# include <sys/mman.h> 42# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 43# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 44# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 45# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 65#endif
52 66
53/* the maximum number of idle cctx that will be pooled */ 67/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 68static int cctx_max_idle = 4;
55 69
56#define PERL_VERSION_ATLEAST(a,b,c) \ 70#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 71# 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 72#endif
105 73
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 74#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 75# undef CORO_STACKGUARD
108#endif 76#endif
… …
117#endif 85#endif
118 86
119/* The next macros try to return the current stack pointer, in an as 87/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 88 * portable way as possible. */
121#if __GNUC__ >= 4 89#if __GNUC__ >= 4
90# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 91# define STACKLEVEL __builtin_frame_address (0)
123#else 92#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 93# define dSTACKLEVEL volatile void *stacklevel
94# define STACKLEVEL ((void *)&stacklevel)
125#endif 95#endif
126 96
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 97#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 98
144#include "CoroAPI.h" 99#include "CoroAPI.h"
100#define GCoroAPI (&coroapi) /* very sneaky */
145 101
146#ifdef USE_ITHREADS 102#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 103# if CORO_PTHREAD
152static void *coro_thx; 104static void *coro_thx;
153# endif 105# endif
106#endif
154 107
155#else 108#ifdef __linux
156 109# include <time.h> /* for timespec */
157# define LOCK (void)0 110# include <syscall.h> /* for SYS_* */
158# define UNLOCK (void)0 111# ifdef SYS_clock_gettime
159 112# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
113# define CORO_CLOCK_MONOTONIC 1
114# define CORO_CLOCK_THREAD_CPUTIME_ID 3
160#endif 115# endif
161 116#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
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};
176 117
177static double (*nvtime)(); /* so why doesn't it take void? */ 118static double (*nvtime)(); /* so why doesn't it take void? */
119static void (*u2time)(pTHX_ UV ret[2]);
120
121/* we hijack an hopefully unused CV flag for our purposes */
122#define CVf_SLF 0x4000
123static OP *pp_slf (pTHX);
124static void slf_destroy (pTHX_ struct coro *coro);
178 125
179static U32 cctx_gen; 126static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 127static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 128static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 129static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 130static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 131static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 132static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 133
134static AV *av_destroy; /* destruction queue */
135static SV *sv_manager; /* the manager coro */
136static SV *sv_idle; /* $Coro::idle */
187 137
188static GV *irsgv; /* $/ */ 138static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 139static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 140static SV *rv_diehook;
191static SV *rv_warnhook; 141static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 142static HV *hv_sig; /* %SIG */
193 143
194/* async_pool helper stuff */ 144/* async_pool helper stuff */
195static SV *sv_pool_rss; 145static SV *sv_pool_rss;
196static SV *sv_pool_size; 146static SV *sv_pool_size;
147static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 148static AV *av_async_pool; /* idle pool */
149static SV *sv_Coro; /* class string */
150static CV *cv_pool_handler;
198 151
199/* Coro::AnyEvent */ 152/* Coro::AnyEvent */
200static SV *sv_activity; 153static SV *sv_activity;
201 154
155/* enable processtime/realtime profiling */
156static char enable_times;
157typedef U32 coro_ts[2];
158static coro_ts time_real, time_cpu;
159static char times_valid;
160
202static struct coro_cctx *cctx_first; 161static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 162static int cctx_count, cctx_idle;
204 163
205enum { 164enum
165{
206 CC_MAPPED = 0x01, 166 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 167 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 168 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 169 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 170 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
220 void *sptr; 180 void *sptr;
221 size_t ssize; 181 size_t ssize;
222 182
223 /* cpu state */ 183 /* cpu state */
224 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 184 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185#ifndef NDEBUG
225 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 186 JMPENV *idle_te; /* same as idle_sp, but for top_env */
187#endif
226 JMPENV *top_env; 188 JMPENV *top_env;
227 coro_context cctx; 189 coro_context cctx;
228 190
229 U32 gen; 191 U32 gen;
230#if CORO_USE_VALGRIND 192#if CORO_USE_VALGRIND
231 int valgrind_id; 193 int valgrind_id;
232#endif 194#endif
233 unsigned char flags; 195 unsigned char flags;
234} coro_cctx; 196} coro_cctx;
235 197
198static coro_cctx *cctx_current; /* the currently running cctx */
199
200/*****************************************************************************/
201
202static MGVTBL coro_state_vtbl;
203
236enum { 204enum
205{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 206 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 207 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 208 CF_NEW = 0x0004, /* has never been switched to */
240 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 209 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
241}; 212};
242 213
243/* the structure where most of the perl state is stored, overlaid on the cxstack */ 214/* the structure where most of the perl state is stored, overlaid on the cxstack */
244typedef struct 215typedef struct
245{ 216{
246 SV *defsv;
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 217 #define VARx(name,expr,type) type name;
251# include "state.h" 218 #include "state.h"
252#undef VAR
253} perl_slots; 219} perl_slots;
254 220
221/* 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)) 222#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 223
257/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
258struct coro { 225struct coro
226{
259 /* the C coroutine allocated to this perl coroutine, if any */ 227 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 228 coro_cctx *cctx;
261 229
262 /* process data */ 230 /* ready queue */
231 struct coro *next_ready;
232
233 /* state data */
263 struct CoroSLF slf_frame; /* saved slf frame */ 234 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 235 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 236 perl_slots *slot; /* basically the saved sp */
266 237
238 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 239 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
271 242
272 /* statistics */ 243 /* statistics */
273 int usecount; /* number of transfers to this coro */ 244 int usecount; /* number of transfers to this coro */
274 245
275 /* coro process data */ 246 /* coro process data */
276 int prio; 247 int prio;
277 SV *throw; /* exception to be thrown */ 248 SV *except; /* exception to be thrown */
249 SV *rouse_cb; /* last rouse callback */
250 AV *on_destroy; /* callbacks or coros to notify on destroy */
251 AV *status; /* the exit status list */
278 252
279 /* async_pool */ 253 /* async_pool */
280 SV *saved_deffh; 254 SV *saved_deffh;
255 SV *invoke_cb;
256 AV *invoke_av;
257
258 /* on_enter/on_leave */
259 AV *on_enter;
260 AV *on_leave;
261
262 /* swap_sv */
263 AV *swap_sv;
264
265 /* times */
266 coro_ts t_cpu, t_real;
281 267
282 /* linked list */ 268 /* linked list */
283 struct coro *next, *prev; 269 struct coro *next, *prev;
284}; 270};
285 271
286typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
288 274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the main reason we don't support windows process emulation */
289static struct CoroSLF slf_frame; /* the current slf frame */ 278static struct CoroSLF slf_frame; /* the current slf frame */
290 279
291/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
292 281
293#define PRIO_MAX 3 282#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 283#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 284#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 285#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 286#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 287#define CORO_PRIO_MIN -4
299 288
300/* for Coro.pm */ 289/* for Coro.pm */
301static SV *coro_current; 290static SV *coro_current;
302static SV *coro_readyhook; 291static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 292static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
293static CV *cv_coro_run;
304static struct coro *coro_first; 294static struct coro *coro_first;
305#define coro_nready coroapi.nready 295#define coro_nready coroapi.nready
306 296
297/** JIT *********************************************************************/
298
299#if CORO_JIT
300 /* APPLE doesn't have HAVE_MMAP though */
301 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
302 #ifndef CORO_JIT_TYPE
303 #if __x86_64 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "amd64-unix"
305 #elif __i386 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "x86-unix"
307 #endif
308 #endif
309#endif
310
311#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
312 #undef CORO_JIT
313#endif
314
315#if CORO_JIT
316 typedef void (*load_save_perl_slots_type)(perl_slots *);
317 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
318#endif
319
320/** Coro::Select ************************************************************/
321
322static OP *(*coro_old_pp_sselect) (pTHX);
323static SV *coro_select_select;
324
325/* horrible hack, but if it works... */
326static OP *
327coro_pp_sselect (pTHX)
328{
329 dSP;
330 PUSHMARK (SP - 4); /* fake argument list */
331 XPUSHs (coro_select_select);
332 PUTBACK;
333
334 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
335 PL_op->op_flags |= OPf_STACKED;
336 PL_op->op_private = 0;
337 return PL_ppaddr [OP_ENTERSUB](aTHX);
338}
339
340/** time stuff **************************************************************/
341
342#ifdef HAS_GETTIMEOFDAY
343
344ecb_inline void
345coro_u2time (pTHX_ UV ret[2])
346{
347 struct timeval tv;
348 gettimeofday (&tv, 0);
349
350 ret [0] = tv.tv_sec;
351 ret [1] = tv.tv_usec;
352}
353
354ecb_inline double
355coro_nvtime (void)
356{
357 struct timeval tv;
358 gettimeofday (&tv, 0);
359
360 return tv.tv_sec + tv.tv_usec * 1e-6;
361}
362
363ecb_inline void
364time_init (pTHX)
365{
366 nvtime = coro_nvtime;
367 u2time = coro_u2time;
368}
369
370#else
371
372ecb_inline void
373time_init (pTHX)
374{
375 SV **svp;
376
377 require_pv ("Time/HiRes.pm");
378
379 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
380
381 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
382 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
383
384 nvtime = INT2PTR (double (*)(), SvIV (*svp));
385
386 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
387 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
388}
389
390#endif
391
307/** lowlevel stuff **********************************************************/ 392/** lowlevel stuff **********************************************************/
308 393
309static SV * 394static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 395coro_get_sv (pTHX_ const char *name, int create)
311{ 396{
312#if PERL_VERSION_ATLEAST (5,10,0) 397#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 398 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create); 399 get_sv (name, create);
315#endif 400#endif
316 return get_sv (name, create); 401 return get_sv (name, create);
317} 402}
318 403
319static AV * 404static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 405coro_get_av (pTHX_ const char *name, int create)
321{ 406{
322#if PERL_VERSION_ATLEAST (5,10,0) 407#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 408 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create); 409 get_av (name, create);
325#endif 410#endif
326 return get_av (name, create); 411 return get_av (name, create);
327} 412}
328 413
329static HV * 414static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 415coro_get_hv (pTHX_ const char *name, int create)
331{ 416{
332#if PERL_VERSION_ATLEAST (5,10,0) 417#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 418 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 419 get_hv (name, create);
335#endif 420#endif
336 return get_hv (name, create); 421 return get_hv (name, create);
337} 422}
338 423
339static AV * 424ecb_inline void
425coro_times_update (void)
426{
427#ifdef coro_clock_gettime
428 struct timespec ts;
429
430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
432 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
433
434 ts.tv_sec = ts.tv_nsec = 0;
435 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
436 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
437#else
438 dTHX;
439 UV tv[2];
440
441 u2time (aTHX_ tv);
442 time_real [0] = tv [0];
443 time_real [1] = tv [1] * 1000;
444#endif
445}
446
447ecb_inline void
448coro_times_add (struct coro *c)
449{
450 c->t_real [1] += time_real [1];
451 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
452 c->t_real [0] += time_real [0];
453
454 c->t_cpu [1] += time_cpu [1];
455 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
456 c->t_cpu [0] += time_cpu [0];
457}
458
459ecb_inline void
460coro_times_sub (struct coro *c)
461{
462 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
463 c->t_real [1] -= time_real [1];
464 c->t_real [0] -= time_real [0];
465
466 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
467 c->t_cpu [1] -= time_cpu [1];
468 c->t_cpu [0] -= time_cpu [0];
469}
470
471/*****************************************************************************/
472/* magic glue */
473
474#define CORO_MAGIC_type_cv 26
475#define CORO_MAGIC_type_state PERL_MAGIC_ext
476
477#define CORO_MAGIC_NN(sv, type) \
478 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
479 ? SvMAGIC (sv) \
480 : mg_find (sv, type))
481
482#define CORO_MAGIC(sv, type) \
483 (ecb_expect_true (SvMAGIC (sv)) \
484 ? CORO_MAGIC_NN (sv, type) \
485 : 0)
486
487#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
488#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
489
490ecb_inline MAGIC *
491SvSTATEhv_p (pTHX_ SV *coro)
492{
493 MAGIC *mg;
494
495 if (ecb_expect_true (
496 SvTYPE (coro) == SVt_PVHV
497 && (mg = CORO_MAGIC_state (coro))
498 && mg->mg_virtual == &coro_state_vtbl
499 ))
500 return mg;
501
502 return 0;
503}
504
505ecb_inline struct coro *
506SvSTATE_ (pTHX_ SV *coro)
507{
508 MAGIC *mg;
509
510 if (SvROK (coro))
511 coro = SvRV (coro);
512
513 mg = SvSTATEhv_p (aTHX_ coro);
514 if (!mg)
515 croak ("Coro::State object required");
516
517 return (struct coro *)mg->mg_ptr;
518}
519
520#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
521
522/* faster than SvSTATE, but expects a coroutine hv */
523#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
524#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
525
526/*****************************************************************************/
527/* padlist management and caching */
528
529ecb_inline AV *
340coro_clone_padlist (pTHX_ CV *cv) 530coro_derive_padlist (pTHX_ CV *cv)
341{ 531{
342 AV *padlist = CvPADLIST (cv); 532 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 533 AV *newpadlist, *newpad;
344 534
345 newpadlist = newAV (); 535 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 540 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 541#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 542 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 543 --AvFILLp (padlist);
354 544
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 545 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 546 av_store (newpadlist, 1, (SV *)newpad);
357 547
358 return newpadlist; 548 return newpadlist;
359} 549}
360 550
361static void 551ecb_inline void
362free_padlist (pTHX_ AV *padlist) 552free_padlist (pTHX_ AV *padlist)
363{ 553{
364 /* may be during global destruction */ 554 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 555 if (!IN_DESTRUCT)
366 { 556 {
367 I32 i = AvFILLp (padlist); 557 I32 i = AvFILLp (padlist);
368 while (i >= 0) 558
559 while (i > 0) /* special-case index 0 */
369 { 560 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 561 /* we try to be extra-careful here */
371 if (svp) 562 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 563 I32 j = AvFILLp (av);
373 SV *sv; 564
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 565 while (j >= 0)
566 SvREFCNT_dec (AvARRAY (av)[j--]);
567
568 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 569 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 570 }
380 571
572 SvREFCNT_dec (AvARRAY (padlist)[0]);
573
574 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 575 SvREFCNT_dec ((SV*)padlist);
382 } 576 }
383} 577}
384 578
385static int 579static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 580coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 581{
388 AV *padlist; 582 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 583 AV *av = (AV *)mg->mg_obj;
584
585 /* perl manages to free our internal AV and _then_ call us */
586 if (IN_DESTRUCT)
587 return 0;
390 588
391 /* casting is fun. */ 589 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 590 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 591 free_padlist (aTHX_ padlist);
394 592
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 593 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 594
397 return 0; 595 return 0;
398} 596}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 597
403static MGVTBL coro_cv_vtbl = { 598static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 599 0, 0, 0, 0,
405 coro_cv_free 600 coro_cv_free
406}; 601};
407 602
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 */ 603/* the next two functions merely cache the padlists */
445static void 604ecb_inline void
446get_padlist (pTHX_ CV *cv) 605get_padlist (pTHX_ CV *cv)
447{ 606{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 607 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 608 AV *av;
450 609
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 610 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 611 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
453 else 612 else
454 { 613 {
455#if CORO_PREFER_PERL_FUNCTIONS 614#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 615 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 616 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 617 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 618 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 619 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 620 SvREFCNT_dec (cp);
462#else 621#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 622 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 623#endif
465 } 624 }
466} 625}
467 626
468static void 627ecb_inline void
469put_padlist (pTHX_ CV *cv) 628put_padlist (pTHX_ CV *cv)
470{ 629{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 630 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av; 631 AV *av;
473 632
474 if (expect_false (!mg)) 633 if (ecb_expect_false (!mg))
475 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 634 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
476 635
477 av = (AV *)mg->mg_obj; 636 av = (AV *)mg->mg_obj;
478 637
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 638 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 639 av_extend (av, AvFILLp (av) + 1);
481 640
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 641 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 642}
484 643
485/** load & save, init *******************************************************/ 644/** load & save, init *******************************************************/
645
646ecb_inline void
647swap_sv (SV *a, SV *b)
648{
649 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
650 SV tmp;
651
652 /* swap sv_any */
653 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
654
655 /* swap sv_flags */
656 SvFLAGS (&tmp) = SvFLAGS (a);
657 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
658 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
659
660#if PERL_VERSION_ATLEAST (5,10,0)
661 /* perl 5.10 and later complicates this _quite_ a bit, but it also
662 * is much faster, so no quarrels here. alternatively, we could
663 * sv_upgrade to avoid this.
664 */
665 {
666 /* swap sv_u */
667 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
668
669 /* if SvANY points to the head, we need to adjust the pointers,
670 * as the pointer for a still points to b, and maybe vice versa.
671 */
672 #define svany_in_head(type) \
673 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
674
675 if (svany_in_head (SvTYPE (a)))
676 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
677
678 if (svany_in_head (SvTYPE (b)))
679 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
680 }
681#endif
682}
683
684/* swap sv heads, at least logically */
685static void
686swap_svs (pTHX_ Coro__State c)
687{
688 int i;
689
690 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
691 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
692}
693
694#define SWAP_SVS(coro) \
695 if (ecb_expect_false ((coro)->swap_sv)) \
696 swap_svs (aTHX_ (coro))
697
698static void
699on_enterleave_call (pTHX_ SV *cb);
486 700
487static void 701static void
488load_perl (pTHX_ Coro__State c) 702load_perl (pTHX_ Coro__State c)
489{ 703{
490 perl_slots *slot = c->slot; 704 perl_slots *slot = c->slot;
491 c->slot = 0; 705 c->slot = 0;
492 706
493 PL_mainstack = c->mainstack; 707 PL_mainstack = c->mainstack;
494 708
495 GvSV (PL_defgv) = slot->defsv; 709#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 710 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 711#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 712 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 713 #include "state.h"
502 #undef VAR 714#endif
503 715
504 { 716 {
505 dSP; 717 dSP;
506 718
507 CV *cv; 719 CV *cv;
508 720
509 /* now do the ugly restore mess */ 721 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 722 while (ecb_expect_true (cv = (CV *)POPs))
511 { 723 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 724 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 725 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 726 CvPADLIST (cv) = (AV *)POPs;
515 } 727 }
516 728
517 PUTBACK; 729 PUTBACK;
518 } 730 }
519 731
520 slf_frame = c->slf_frame; 732 slf_frame = c->slf_frame;
733 CORO_THROW = c->except;
734
735 if (ecb_expect_false (enable_times))
736 {
737 if (ecb_expect_false (!times_valid))
738 coro_times_update ();
739
740 coro_times_sub (c);
741 }
742
743 if (ecb_expect_false (c->on_enter))
744 {
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
748 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
749 }
750
751 SWAP_SVS (c);
521} 752}
522 753
523static void 754static void
524save_perl (pTHX_ Coro__State c) 755save_perl (pTHX_ Coro__State c)
525{ 756{
757 SWAP_SVS (c);
758
759 if (ecb_expect_false (c->on_leave))
760 {
761 int i;
762
763 for (i = AvFILLp (c->on_leave); i >= 0; --i)
764 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
765 }
766
767 times_valid = 0;
768
769 if (ecb_expect_false (enable_times))
770 {
771 coro_times_update (); times_valid = 1;
772 coro_times_add (c);
773 }
774
775 c->except = CORO_THROW;
526 c->slf_frame = slf_frame; 776 c->slf_frame = slf_frame;
527 777
528 { 778 {
529 dSP; 779 dSP;
530 I32 cxix = cxstack_ix; 780 I32 cxix = cxstack_ix;
… …
538 788
539 XPUSHs (Nullsv); 789 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 790 /* this loop was inspired by pp_caller */
541 for (;;) 791 for (;;)
542 { 792 {
543 while (expect_true (cxix >= 0)) 793 while (ecb_expect_true (cxix >= 0))
544 { 794 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 795 PERL_CONTEXT *cx = &ccstk[cxix--];
546 796
547 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 797 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
548 { 798 {
549 CV *cv = cx->blk_sub.cv; 799 CV *cv = cx->blk_sub.cv;
550 800
551 if (expect_true (CvDEPTH (cv))) 801 if (ecb_expect_true (CvDEPTH (cv)))
552 { 802 {
553 EXTEND (SP, 3); 803 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 804 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 805 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 806 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 809 get_padlist (aTHX_ cv);
560 } 810 }
561 } 811 }
562 } 812 }
563 813
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 814 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 815 break;
566 816
567 top_si = top_si->si_prev; 817 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 818 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 819 cxix = top_si->si_cxix;
… …
571 821
572 PUTBACK; 822 PUTBACK;
573 } 823 }
574 824
575 /* allocate some space on the context stack for our purposes */ 825 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 826 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 { 827 {
581 int i; 828 unsigned int i;
829
582 for (i = 3; i < SLOT_COUNT; ++i) 830 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 831 CXINC;
584 } 832
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 833 cxstack_ix -= SLOT_COUNT; /* undo allocation */
834 }
586 835
587 c->mainstack = PL_mainstack; 836 c->mainstack = PL_mainstack;
588 837
589 { 838 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 839 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 840
592 slot->defav = GvAV (PL_defgv); 841#if CORO_JIT
593 slot->defsv = DEFSV; 842 save_perl_slots (slot);
594 slot->errsv = ERRSV; 843#else
595 slot->irsgv = GvSV (irsgv);
596
597 #define VAR(name,type) slot->name = PL_ ## name; 844 #define VARx(name,expr,type) slot->name = expr;
598 # include "state.h" 845 #include "state.h"
599 #undef VAR 846#endif
600 } 847 }
601} 848}
602 849
603/* 850/*
604 * allocate various perl stacks. This is almost an exact copy 851 * allocate various perl stacks. This is almost an exact copy
605 * of perl.c:init_stacks, except that it uses less memory 852 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 853 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 854 * not usually need a lot of stackspace.
608 */ 855 */
609#if CORO_PREFER_PERL_FUNCTIONS 856#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 857# define coro_init_stacks(thx) init_stacks ()
611#else 858#else
612static void 859static void
613coro_init_stacks (pTHX) 860coro_init_stacks (pTHX)
614{ 861{
615 PL_curstackinfo = new_stackinfo(32, 8); 862 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; 863 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 864 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 865 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 866
620 PL_stack_base = AvARRAY(PL_curstack); 867 PL_stack_base = AvARRAY(PL_curstack);
… …
635#endif 882#endif
636 883
637 New(54,PL_scopestack,8,I32); 884 New(54,PL_scopestack,8,I32);
638 PL_scopestack_ix = 0; 885 PL_scopestack_ix = 0;
639 PL_scopestack_max = 8; 886 PL_scopestack_max = 8;
887#if HAS_SCOPESTACK_NAME
888 New(54,PL_scopestack_name,8,const char*);
889#endif
640 890
641 New(54,PL_savestack,24,ANY); 891 New(54,PL_savestack,24,ANY);
642 PL_savestack_ix = 0; 892 PL_savestack_ix = 0;
643 PL_savestack_max = 24; 893 PL_savestack_max = 24;
644 894
… …
672 } 922 }
673 923
674 Safefree (PL_tmps_stack); 924 Safefree (PL_tmps_stack);
675 Safefree (PL_markstack); 925 Safefree (PL_markstack);
676 Safefree (PL_scopestack); 926 Safefree (PL_scopestack);
927#if HAS_SCOPESTACK_NAME
928 Safefree (PL_scopestack_name);
929#endif
677 Safefree (PL_savestack); 930 Safefree (PL_savestack);
678#if !PERL_VERSION_ATLEAST (5,10,0) 931#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 932 Safefree (PL_retstack);
680#endif 933#endif
681} 934}
682 935
936#define CORO_RSS \
937 rss += sizeof (SYM (curstackinfo)); \
938 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
939 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
940 rss += SYM (tmps_max) * sizeof (SV *); \
941 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
942 rss += SYM (scopestack_max) * sizeof (I32); \
943 rss += SYM (savestack_max) * sizeof (ANY);
944
683static size_t 945static size_t
684coro_rss (pTHX_ struct coro *coro) 946coro_rss (pTHX_ struct coro *coro)
685{ 947{
686 size_t rss = sizeof (*coro); 948 size_t rss = sizeof (*coro);
687 949
688 if (coro->mainstack) 950 if (coro->mainstack)
689 { 951 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 952 if (coro->flags & CF_RUNNING)
694 { 953 {
695 slot = &tmp_slot; 954 #define SYM(sym) PL_ ## sym
696 955 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 956 #undef SYM
700 } 957 }
701 else 958 else
702 slot = coro->slot;
703
704 if (slot)
705 { 959 {
706 rss += sizeof (slot->curstackinfo); 960 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 961 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 962 #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 } 963 }
718 } 964 }
719 965
720 return rss; 966 return rss;
721} 967}
… …
734#endif 980#endif
735 981
736/* 982/*
737 * This overrides the default magic get method of %SIG elements. 983 * 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 984 * 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 985 * and instead of trying to save and restore the hash elements (extremely slow),
740 * readback here. 986 * 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 */ 987 */
745static int 988static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 989coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 990{
748 const char *s = MgPV_nolen_const (mg); 991 const char *s = MgPV_nolen_const (mg);
749 992
750 if (*s == '_') 993 if (*s == '_')
751 { 994 {
752 SV **svp = 0; 995 SV **svp = 0;
753 996
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 997 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 998 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756 999
757 if (svp) 1000 if (svp)
758 { 1001 {
759 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1002 SV *ssv;
1003
1004 if (!*svp)
1005 ssv = &PL_sv_undef;
1006 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1007 ssv = sv_2mortal (newRV_inc (*svp));
1008 else
1009 ssv = *svp;
1010
1011 sv_setsv (sv, ssv);
760 return 0; 1012 return 0;
761 } 1013 }
762 } 1014 }
763 1015
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1016 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765} 1017}
766 1018
767static int 1019static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1020coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 1021{
770 const char *s = MgPV_nolen_const (mg); 1022 const char *s = MgPV_nolen_const (mg);
771 1023
772 if (*s == '_') 1024 if (*s == '_')
… …
786 } 1038 }
787 1039
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1040 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1041}
790 1042
791static int 1043static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1044coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1045{
794 const char *s = MgPV_nolen_const (mg); 1046 const char *s = MgPV_nolen_const (mg);
795 1047
796 if (*s == '_') 1048 if (*s == '_')
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1053 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 1054
803 if (svp) 1055 if (svp)
804 { 1056 {
805 SV *old = *svp; 1057 SV *old = *svp;
806 *svp = newSVsv (sv); 1058 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1059 SvREFCNT_dec (old);
808 return 0; 1060 return 0;
809 } 1061 }
810 } 1062 }
811 1063
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1064 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 1065}
814 1066
815static void 1067static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 1068prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 1069{
818 /* kind of mega-hacky, but works */ 1070 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 1071 ta->next = ta->prev = (struct coro *)ta;
820} 1072}
821 1073
822static int 1074static int
823slf_check_nop (aTHX) 1075slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1076{
825 return 0; 1077 return 0;
826} 1078}
827 1079
828static void 1080static int
1081slf_check_repeat (pTHX_ struct CoroSLF *frame)
1082{
1083 return 1;
1084}
1085
1086static UNOP init_perl_op;
1087
1088ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1089init_perl (pTHX_ struct coro *coro)
830{ 1090{
831 /* 1091 /*
832 * emulate part of the perl startup here. 1092 * emulate part of the perl startup here.
833 */ 1093 */
834 coro_init_stacks (aTHX); 1094 coro_init_stacks (aTHX);
835 1095
836 PL_runops = RUNOPS_DEFAULT; 1096 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1097 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1098 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1099 PL_comppad = 0;
1100 PL_comppad_name = 0;
1101 PL_comppad_name_fill = 0;
1102 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1103 PL_curpm = 0;
841 PL_curpad = 0; 1104 PL_curpad = 0;
842 PL_localizing = 0; 1105 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1106 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1107#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1108 PL_parser = 0;
847#endif 1109#endif
1110 PL_hints = 0;
848 1111
849 /* recreate the die/warn hooks */ 1112 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1113 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1114 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1115
853 GvSV (PL_defgv) = newSV (0); 1116 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1117 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1118 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1119 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1120 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1121 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1122 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1123
860 { 1124 {
861 dSP; 1125 dSP;
862 UNOP myop; 1126 UNOP myop;
863 1127
864 Zero (&myop, 1, UNOP); 1128 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1129 myop.op_next = Nullop;
1130 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1131 myop.op_flags = OPf_WANT_VOID;
867 1132
868 PUSHMARK (SP); 1133 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1134 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1135 PUTBACK;
871 PL_op = (OP *)&myop; 1136 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1137 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1138 }
875 1139
876 /* this newly created coroutine might be run on an existing cctx which most 1140 /* 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. 1141 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1142 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1143 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 */ 1144 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881} 1145 slf_frame.destroy = 0;
882 1146
1147 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1148 init_perl_op.op_next = PL_op;
1149 init_perl_op.op_type = OP_ENTERSUB;
1150 init_perl_op.op_ppaddr = pp_slf;
1151 /* no flags etc. required, as an init function won't be called */
1152
1153 PL_op = (OP *)&init_perl_op;
1154
1155 /* copy throw, in case it was set before init_perl */
1156 CORO_THROW = coro->except;
1157
1158 SWAP_SVS (coro);
1159
1160 if (ecb_expect_false (enable_times))
1161 {
1162 coro_times_update ();
1163 coro_times_sub (coro);
1164 }
1165}
1166
883static void 1167static void
884coro_destruct (pTHX_ struct coro *coro) 1168coro_unwind_stacks (pTHX)
885{ 1169{
886 if (!IN_DESTRUCT) 1170 if (!IN_DESTRUCT)
887 { 1171 {
888 /* restore all saved variables and stuff */ 1172 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1173 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1181 POPSTACK_TO (PL_mainstack);
898 1182
899 /* unwind main stack */ 1183 /* unwind main stack */
900 dounwind (-1); 1184 dounwind (-1);
901 } 1185 }
1186}
902 1187
903 SvREFCNT_dec (GvSV (PL_defgv)); 1188static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1189destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1190{
906 SvREFCNT_dec (PL_defoutgv); 1191 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1192
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 1193 {
1194 SV *old_current = SvRV (coro_current);
1195 struct coro *current = SvSTATE (old_current);
1196
1197 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1198
1199 save_perl (aTHX_ current);
1200
1201 /* this will cause transfer_check to croak on block*/
1202 SvRV_set (coro_current, (SV *)coro->hv);
1203
1204 load_perl (aTHX_ coro);
1205
1206 coro_unwind_stacks (aTHX);
1207
1208 /* restore swapped sv's */
1209 SWAP_SVS (coro);
1210
1211 coro_destruct_stacks (aTHX);
1212
1213 /* now save some sv's to be free'd later */
1214 svf [0] = GvSV (PL_defgv);
1215 svf [1] = (SV *)GvAV (PL_defgv);
1216 svf [2] = GvSV (PL_errgv);
1217 svf [3] = (SV *)PL_defoutgv;
1218 svf [4] = PL_rs;
1219 svf [5] = GvSV (irsgv);
1220 svf [6] = (SV *)GvHV (PL_hintgv);
1221 svf [7] = PL_diehook;
1222 svf [8] = PL_warnhook;
1223 assert (9 == sizeof (svf) / sizeof (*svf));
1224
1225 SvRV_set (coro_current, old_current);
1226
1227 load_perl (aTHX_ current);
1228 }
1229
1230 {
1231 unsigned int i;
1232
1233 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1234 SvREFCNT_dec (svf [i]);
1235
913 SvREFCNT_dec (coro->saved_deffh); 1236 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1237 SvREFCNT_dec (coro->rouse_cb);
915 1238 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1239 SvREFCNT_dec (coro->invoke_av);
1240 }
917} 1241}
918 1242
919INLINE void 1243ecb_inline void
920free_coro_mortal (pTHX) 1244free_coro_mortal (pTHX)
921{ 1245{
922 if (expect_true (coro_mortal)) 1246 if (ecb_expect_true (coro_mortal))
923 { 1247 {
924 SvREFCNT_dec (coro_mortal); 1248 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1249 coro_mortal = 0;
926 } 1250 }
927} 1251}
928 1252
929static int 1253static int
930runops_trace (pTHX) 1254runops_trace (pTHX)
931{ 1255{
932 COP *oldcop = 0; 1256 COP *oldcop = 0;
933 int oldcxix = -2; 1257 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1258
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1259 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1260 {
939 PERL_ASYNC_CHECK (); 1261 PERL_ASYNC_CHECK ();
940 1262
941 if (cctx->flags & CC_TRACE_ALL) 1263 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1264 {
943 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1265 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
944 { 1266 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1267 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1268 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1269 AV *av = newAV (); /* return values */
948 SV **cb; 1270 SV **cb;
… …
985 1307
986 if (PL_curcop != &PL_compiling) 1308 if (PL_curcop != &PL_compiling)
987 { 1309 {
988 SV **cb; 1310 SV **cb;
989 1311
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1312 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1313 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1314 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1315
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1316 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1317 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1318 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1319 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1320 SV *fullname = sv_2mortal (newSV (0));
1000 1321
1001 if (isGV (gv)) 1322 if (isGV (gv))
… …
1006 SAVETMPS; 1327 SAVETMPS;
1007 EXTEND (SP, 3); 1328 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1329 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1330 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1331 PUSHs (fullname);
1011 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1332 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1012 PUTBACK; 1333 PUTBACK;
1013 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1334 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); 1335 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1015 SPAGAIN; 1336 SPAGAIN;
1016 FREETMPS; 1337 FREETMPS;
… …
1019 } 1340 }
1020 1341
1021 oldcxix = cxstack_ix; 1342 oldcxix = cxstack_ix;
1022 } 1343 }
1023 1344
1024 if (cctx->flags & CC_TRACE_LINE) 1345 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1346 {
1026 dSP; 1347 dSP;
1027 1348
1028 PL_runops = RUNOPS_DEFAULT; 1349 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1350 ENTER;
… …
1048 1369
1049 TAINT_NOT; 1370 TAINT_NOT;
1050 return 0; 1371 return 0;
1051} 1372}
1052 1373
1374static struct CoroSLF cctx_ssl_frame;
1375
1053static void 1376static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1377slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1378{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1379 ta->prev = 0;
1058} 1380}
1059 1381
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1382static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1383slf_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{ 1384{
1067 dSP; 1385 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 1386
1387 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1388}
1389
1390/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1391static void ecb_noinline
1392cctx_prepare (pTHX)
1393{
1070 PL_top_env = &PL_start_env; 1394 PL_top_env = &PL_start_env;
1071 1395
1072 if (cctx->flags & CC_TRACE) 1396 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1397 PL_runops = runops_trace;
1074 1398
1075 Zero (&myop, 1, UNOP); 1399 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1400 * that can lead to creation of a new cctx */
1077 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1401 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1402 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1078 1403
1079 PUSHMARK (SP); 1404 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1405 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1406
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1407 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1408 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1409}
1088 1410
1089/* the tail of transfer: execute stuff we can only do after a transfer */ 1411/* the tail of transfer: execute stuff we can only do after a transfer */
1090INLINE void 1412ecb_inline void
1091transfer_tail (pTHX) 1413transfer_tail (pTHX)
1092{ 1414{
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); 1415 free_coro_mortal (aTHX);
1098 UNLOCK; 1416}
1099 1417
1100 if (expect_false (next->throw)) 1418/* try to exit the same way perl's main function would do */
1101 { 1419/* we do not bother resetting the environment or other things *7
1102 SV *exception = sv_2mortal (next->throw); 1420/* that are not, uhm, essential */
1103 1421/* this obviously also doesn't work when perl is embedded */
1104 next->throw = 0; 1422static void ecb_noinline ecb_cold
1105 sv_setsv (ERRSV, exception); 1423perlish_exit (pTHX)
1106 croak (0); 1424{
1107 } 1425 int exitstatus = perl_destruct (PL_curinterp);
1426 perl_free (PL_curinterp);
1427 exit (exitstatus);
1108} 1428}
1109 1429
1110/* 1430/*
1111 * this is a _very_ stripped down perl interpreter ;) 1431 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1432 */
… …
1124 /* normally we would need to skip the entersub here */ 1444 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1445 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1446 /* PL_nop = PL_nop->op_next */
1127 1447
1128 /* inject a fake subroutine call to cctx_init */ 1448 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1449 cctx_prepare (aTHX);
1130 1450
1131 /* cctx_run is the alternative tail of transfer() */ 1451 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1452 transfer_tail (aTHX);
1134 1453
1135 /* somebody or something will hit me for both perl_run and PL_restartop */ 1454 /* somebody or something will hit me for both perl_run and PL_restartop */
1136 PL_restartop = PL_op; 1455 PL_restartop = PL_op;
1137 perl_run (PL_curinterp); 1456 perl_run (PL_curinterp);
1457 /*
1458 * Unfortunately, there is no way to get at the return values of the
1459 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1460 * runtime errors here, as this is just a random interpreter, not a thread.
1461 */
1138 1462
1139 /* 1463 /*
1140 * If perl-run returns we assume exit() was being called or the coro 1464 * 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) 1465 * 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 1466 * 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" 1467 * doing in that case. YMMV.
1144 * coroutine as Coro has no such concept
1145 */ 1468 */
1146 PL_top_env = main_top_env; 1469 perlish_exit (aTHX);
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1470 }
1149} 1471}
1150 1472
1151static coro_cctx * 1473static coro_cctx *
1152cctx_new () 1474cctx_new (void)
1153{ 1475{
1154 coro_cctx *cctx; 1476 coro_cctx *cctx;
1155 1477
1156 ++cctx_count; 1478 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx); 1479 New (0, cctx, 1, coro_cctx);
… …
1163 return cctx; 1485 return cctx;
1164} 1486}
1165 1487
1166/* create a new cctx only suitable as source */ 1488/* create a new cctx only suitable as source */
1167static coro_cctx * 1489static coro_cctx *
1168cctx_new_empty () 1490cctx_new_empty (void)
1169{ 1491{
1170 coro_cctx *cctx = cctx_new (); 1492 coro_cctx *cctx = cctx_new ();
1171 1493
1172 cctx->sptr = 0; 1494 cctx->sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0); 1495 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1175 return cctx; 1497 return cctx;
1176} 1498}
1177 1499
1178/* create a new cctx suitable as destination/running a perl interpreter */ 1500/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx * 1501static coro_cctx *
1180cctx_new_run () 1502cctx_new_run (void)
1181{ 1503{
1182 coro_cctx *cctx = cctx_new (); 1504 coro_cctx *cctx = cctx_new ();
1183 void *stack_start; 1505 void *stack_start;
1184 size_t stack_size; 1506 size_t stack_size;
1185 1507
1186#if HAVE_MMAP 1508#if HAVE_MMAP
1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1509 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1188 /* mmap supposedly does allocate-on-write for us */ 1510 /* 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); 1511 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
1190 1512
1191 if (cctx->sptr != (void *)-1) 1513 if (cctx->sptr != (void *)-1)
1192 { 1514 {
1193 #if CORO_STACKGUARD 1515 #if CORO_STACKGUARD
1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1516 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1226cctx_destroy (coro_cctx *cctx) 1548cctx_destroy (coro_cctx *cctx)
1227{ 1549{
1228 if (!cctx) 1550 if (!cctx)
1229 return; 1551 return;
1230 1552
1553 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1554
1231 --cctx_count; 1555 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1556 coro_destroy (&cctx->cctx);
1233 1557
1234 /* coro_transfer creates new, empty cctx's */ 1558 /* coro_transfer creates new, empty cctx's */
1235 if (cctx->sptr) 1559 if (cctx->sptr)
… …
1253#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1577#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1254 1578
1255static coro_cctx * 1579static coro_cctx *
1256cctx_get (pTHX) 1580cctx_get (pTHX)
1257{ 1581{
1258 while (expect_true (cctx_first)) 1582 while (ecb_expect_true (cctx_first))
1259 { 1583 {
1260 coro_cctx *cctx = cctx_first; 1584 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1585 cctx_first = cctx->next;
1262 --cctx_idle; 1586 --cctx_idle;
1263 1587
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1588 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1589 return cctx;
1266 1590
1267 cctx_destroy (cctx); 1591 cctx_destroy (cctx);
1268 } 1592 }
1269 1593
… …
1274cctx_put (coro_cctx *cctx) 1598cctx_put (coro_cctx *cctx)
1275{ 1599{
1276 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1600 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1277 1601
1278 /* free another cctx if overlimit */ 1602 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1603 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1604 {
1281 coro_cctx *first = cctx_first; 1605 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1606 cctx_first = first->next;
1283 --cctx_idle; 1607 --cctx_idle;
1284 1608
… …
1293/** coroutine switching *****************************************************/ 1617/** coroutine switching *****************************************************/
1294 1618
1295static void 1619static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1620transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1621{
1622 /* TODO: throwing up here is considered harmful */
1623
1298 if (expect_true (prev != next)) 1624 if (ecb_expect_true (prev != next))
1299 { 1625 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1626 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,"); 1627 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1302 1628
1303 if (expect_false (next->flags & CF_RUNNING)) 1629 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,"); 1630 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1308 1631
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1632#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1633 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,"); 1634 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1312#endif 1635#endif
1313 } 1636 }
1314} 1637}
1315 1638
1316/* always use the TRANSFER macro */ 1639/* always use the TRANSFER macro */
1317static void NOINLINE 1640static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1641transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1642{
1320 dSTACKLEVEL; 1643 dSTACKLEVEL;
1321 1644
1322 /* sometimes transfer is only called to set idle_sp */ 1645 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1646 if (ecb_expect_false (!prev))
1324 { 1647 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1648 cctx_current->idle_sp = STACKLEVEL;
1326 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1649 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1327 } 1650 }
1328 else if (expect_true (prev != next)) 1651 else if (ecb_expect_true (prev != next))
1329 { 1652 {
1330 coro_cctx *prev__cctx; 1653 coro_cctx *cctx_prev;
1331 1654
1332 if (expect_false (prev->flags & CF_NEW)) 1655 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1656 {
1334 /* create a new empty/source context */ 1657 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1658 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1659 prev->flags |= CF_RUNNING;
1338 } 1660 }
1339 1661
1340 prev->flags &= ~CF_RUNNING; 1662 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1663 next->flags |= CF_RUNNING;
1342 1664
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1665 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1666 save_perl (aTHX_ prev);
1347 1667
1348 if (expect_false (next->flags & CF_NEW)) 1668 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1669 {
1350 /* need to start coroutine */ 1670 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1671 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1672 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1673 init_perl (aTHX_ next);
1354 } 1674 }
1355 else 1675 else
1356 load_perl (aTHX_ next); 1676 load_perl (aTHX_ next);
1357 1677
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1678 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1679 if (ecb_expect_true (
1362 prev__cctx->idle_sp == stacklevel 1680 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1681 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1682 && !force_cctx
1365 )) 1683 ))
1366 { 1684 {
1367 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1685 /* 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)); 1686 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1369 1687
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 */ 1688 /* 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 */ 1689 /* without this the next cctx_get might destroy the running cctx while still in use */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1690 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1691 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1692 next->cctx = cctx_get (aTHX);
1377 1693
1378 cctx_put (prev__cctx); 1694 cctx_put (cctx_current);
1379 } 1695 }
1696 else
1697 prev->cctx = cctx_current;
1380 1698
1381 ++next->usecount; 1699 ++next->usecount;
1382 1700
1383 if (expect_true (!next->cctx)) 1701 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1702 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1703
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1704 next->cctx = 0;
1387 transfer_next = next;
1388 1705
1389 if (expect_false (prev__cctx != next->cctx)) 1706 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1707 {
1391 prev__cctx->top_env = PL_top_env; 1708 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1709 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1710 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1711 }
1395 1712
1396 transfer_tail (aTHX); 1713 transfer_tail (aTHX);
1397 } 1714 }
1398} 1715}
… …
1400#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1717#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) 1718#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1719
1403/** high level stuff ********************************************************/ 1720/** high level stuff ********************************************************/
1404 1721
1722/* this function is actually Coro, not Coro::State, but we call it from here */
1723/* because it is convenient - but it hasn't been declared yet for that reason */
1405static int 1724static void
1725coro_call_on_destroy (pTHX_ struct coro *coro);
1726
1727static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1728coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1729{
1408 if (coro->flags & CF_DESTROYED) 1730 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1731 return;
1410 1732
1733 slf_destroy (aTHX_ coro);
1734
1411 coro->flags |= CF_DESTROYED; 1735 coro->flags |= CF_ZOMBIE;
1412 1736
1413 if (coro->flags & CF_READY) 1737 if (coro->flags & CF_READY)
1414 { 1738 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1739 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1740 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1741 --coro_nready;
1419 UNLOCK;
1420 } 1742 }
1421 else 1743 else
1422 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1744 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 1745
1443 if (coro->next) coro->next->prev = coro->prev; 1746 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1747 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1748 if (coro == coro_first) coro_first = coro->next;
1446 1749
1447 return 1; 1750 if (coro->mainstack
1751 && coro->mainstack != main_mainstack
1752 && coro->slot
1753 && !PL_dirty)
1754 destroy_perl (aTHX_ coro);
1755
1756 cctx_destroy (coro->cctx);
1757 SvREFCNT_dec (coro->startcv);
1758 SvREFCNT_dec (coro->args);
1759 SvREFCNT_dec (coro->swap_sv);
1760 SvREFCNT_dec (CORO_THROW);
1761
1762 coro_call_on_destroy (aTHX_ coro);
1763
1764 /* more destruction mayhem in coro_state_free */
1448} 1765}
1449 1766
1450static int 1767static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1768coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1769{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1770 struct coro *coro = (struct coro *)mg->mg_ptr;
1454 mg->mg_ptr = 0; 1771 mg->mg_ptr = 0;
1455 1772
1456 coro->hv = 0;
1457
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro); 1773 coro_state_destroy (aTHX_ coro);
1774 SvREFCNT_dec (coro->on_destroy);
1775 SvREFCNT_dec (coro->status);
1776
1461 Safefree (coro); 1777 Safefree (coro);
1462 }
1463 1778
1464 return 0; 1779 return 0;
1465} 1780}
1466 1781
1467static int 1782static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1783coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1784{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1785 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1786 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1787 mg->mg_ptr = 0;
1788 mg->mg_virtual = 0;
1473 1789
1474 return 0; 1790 return 0;
1475} 1791}
1476 1792
1477static MGVTBL coro_state_vtbl = { 1793static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1818 TRANSFER (ta, 1);
1503} 1819}
1504 1820
1505/** Coro ********************************************************************/ 1821/** Coro ********************************************************************/
1506 1822
1507static void 1823ecb_inline void
1508coro_enq (pTHX_ SV *coro_sv) 1824coro_enq (pTHX_ struct coro *coro)
1509{ 1825{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1826 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1827
1513static SV * 1828 SvREFCNT_inc_NN (coro->hv);
1829
1830 coro->next_ready = 0;
1831 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1832 ready [1] = coro;
1833}
1834
1835ecb_inline struct coro *
1514coro_deq (pTHX) 1836coro_deq (pTHX)
1515{ 1837{
1516 int prio; 1838 int prio;
1517 1839
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1840 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1841 {
1520 return av_shift (coro_ready [prio]); 1842 struct coro **ready = coro_ready [prio];
1843
1844 if (ready [0])
1845 {
1846 struct coro *coro = ready [0];
1847 ready [0] = coro->next_ready;
1848 return coro;
1849 }
1850 }
1521 1851
1522 return 0; 1852 return 0;
1853}
1854
1855static void
1856invoke_sv_ready_hook_helper (void)
1857{
1858 dTHX;
1859 dSP;
1860
1861 ENTER;
1862 SAVETMPS;
1863
1864 PUSHMARK (SP);
1865 PUTBACK;
1866 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1867
1868 FREETMPS;
1869 LEAVE;
1523} 1870}
1524 1871
1525static int 1872static int
1526api_ready (pTHX_ SV *coro_sv) 1873api_ready (pTHX_ SV *coro_sv)
1527{ 1874{
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); 1875 struct coro *coro = SvSTATE (coro_sv);
1536 1876
1537 if (coro->flags & CF_READY) 1877 if (coro->flags & CF_READY)
1538 return 0; 1878 return 0;
1539 1879
1540 coro->flags |= CF_READY; 1880 coro->flags |= CF_READY;
1541 1881
1542 LOCK; 1882 coro_enq (aTHX_ coro);
1543 1883
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1884 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1885 if (coroapi.readyhook)
1546 1886 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 1887
1571 return 1; 1888 return 1;
1572} 1889}
1573 1890
1574static int 1891static int
1575api_is_ready (pTHX_ SV *coro_sv) 1892api_is_ready (pTHX_ SV *coro_sv)
1576{ 1893{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1894 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1895}
1579 1896
1580INLINE void 1897/* expects to own a reference to next->hv */
1898ecb_inline void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1899prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1900{
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); 1901 SV *prev_sv = SvRV (coro_current);
1902
1627 ta->prev = SvSTATE (prev_sv); 1903 ta->prev = SvSTATE_hv (prev_sv);
1904 ta->next = next;
1905
1628 TRANSFER_CHECK (*ta); 1906 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1907
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1908 SvRV_set (coro_current, (SV *)next->hv);
1632 1909
1633 LOCK;
1634 free_coro_mortal (aTHX); 1910 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1911 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1912}
1638 1913
1639INLINE void 1914static void
1915prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1916{
1917 for (;;)
1918 {
1919 struct coro *next = coro_deq (aTHX);
1920
1921 if (ecb_expect_true (next))
1922 {
1923 /* cannot transfer to destroyed coros, skip and look for next */
1924 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1925 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1926 else
1927 {
1928 next->flags &= ~CF_READY;
1929 --coro_nready;
1930
1931 prepare_schedule_to (aTHX_ ta, next);
1932 break;
1933 }
1934 }
1935 else
1936 {
1937 /* nothing to schedule: call the idle handler */
1938 if (SvROK (sv_idle)
1939 && SvOBJECT (SvRV (sv_idle)))
1940 {
1941 if (SvRV (sv_idle) == SvRV (coro_current))
1942 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1943
1944 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1945 api_ready (aTHX_ SvRV (sv_idle));
1946 --coro_nready;
1947 }
1948 else
1949 {
1950 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1951 dSP;
1952
1953 ENTER;
1954 SAVETMPS;
1955
1956 PUSHMARK (SP);
1957 PUTBACK;
1958 call_sv (sv_idle, G_VOID | G_DISCARD);
1959
1960 FREETMPS;
1961 LEAVE;
1962 }
1963 }
1964 }
1965}
1966
1967ecb_inline void
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1968prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1969{
1642 api_ready (aTHX_ coro_current); 1970 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 1971 prepare_schedule (aTHX_ ta);
1644} 1972}
1645 1973
1646INLINE void 1974ecb_inline void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1975prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 1976{
1649 SV *prev = SvRV (coro_current); 1977 SV *prev = SvRV (coro_current);
1650 1978
1651 if (coro_nready) 1979 if (coro_nready)
… …
1664 1992
1665 prepare_schedule (aTHX_ &ta); 1993 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1994 TRANSFER (ta, 1);
1667} 1995}
1668 1996
1997static void
1998api_schedule_to (pTHX_ SV *coro_sv)
1999{
2000 struct coro_transfer_args ta;
2001 struct coro *next = SvSTATE (coro_sv);
2002
2003 SvREFCNT_inc_NN (coro_sv);
2004 prepare_schedule_to (aTHX_ &ta, next);
2005}
2006
1669static int 2007static int
1670api_cede (pTHX) 2008api_cede (pTHX)
1671{ 2009{
1672 struct coro_transfer_args ta; 2010 struct coro_transfer_args ta;
1673 2011
1674 prepare_cede (aTHX_ &ta); 2012 prepare_cede (aTHX_ &ta);
1675 2013
1676 if (expect_true (ta.prev != ta.next)) 2014 if (ecb_expect_true (ta.prev != ta.next))
1677 { 2015 {
1678 TRANSFER (ta, 1); 2016 TRANSFER (ta, 1);
1679 return 1; 2017 return 1;
1680 } 2018 }
1681 else 2019 else
… …
1700static void 2038static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 2039api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 2040{
1703 struct coro *coro = SvSTATE (coro_sv); 2041 struct coro *coro = SvSTATE (coro_sv);
1704 2042
2043 if (coro->flags & CF_RUNNING)
2044 croak ("cannot enable tracing on a running coroutine, caught");
2045
1705 if (flags & CC_TRACE) 2046 if (flags & CC_TRACE)
1706 { 2047 {
1707 if (!coro->cctx) 2048 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2049 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2050 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2051 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2052
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2053 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2054 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2055 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2056 {
… …
1720 else 2061 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2062 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2063 }
1723} 2064}
1724 2065
1725#if 0 2066static void
2067coro_push_av (pTHX_ AV *av, I32 gimme_v)
2068{
2069 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2070 {
2071 dSP;
2072
2073 if (gimme_v == G_SCALAR)
2074 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2075 else
2076 {
2077 int i;
2078 EXTEND (SP, AvFILLp (av) + 1);
2079
2080 for (i = 0; i <= AvFILLp (av); ++i)
2081 PUSHs (AvARRAY (av)[i]);
2082 }
2083
2084 PUTBACK;
2085 }
2086}
2087
2088static void
2089coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2090{
2091 if (!coro->on_destroy)
2092 coro->on_destroy = newAV ();
2093
2094 av_push (coro->on_destroy, cb);
2095}
2096
2097static void
2098slf_destroy_join (pTHX_ struct CoroSLF *frame)
2099{
2100 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2101}
2102
1726static int 2103static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2104slf_check_join (pTHX_ struct CoroSLF *frame)
1728{ 2105{
1729 AV *padlist; 2106 struct coro *coro = (struct coro *)frame->data;
1730 AV *av = (AV *)mg->mg_obj;
1731 2107
1732 abort (); 2108 if (!coro->status)
2109 return 1;
2110
2111 frame->destroy = 0;
2112
2113 coro_push_av (aTHX_ coro->status, GIMME_V);
2114
2115 SvREFCNT_dec ((SV *)coro->hv);
1733 2116
1734 return 0; 2117 return 0;
1735} 2118}
1736 2119
1737static MGVTBL coro_gensub_vtbl = { 2120static void
1738 0, 0, 0, 0, 2121slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2122{
1740}; 2123 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1741#endif 2124
2125 if (items > 1)
2126 croak ("join called with too many arguments");
2127
2128 if (coro->status)
2129 frame->prepare = prepare_nop;
2130 else
2131 {
2132 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2133 frame->prepare = prepare_schedule;
2134 }
2135
2136 frame->check = slf_check_join;
2137 frame->destroy = slf_destroy_join;
2138 frame->data = (void *)coro;
2139 SvREFCNT_inc (coro->hv);
2140}
2141
2142static void
2143coro_call_on_destroy (pTHX_ struct coro *coro)
2144{
2145 AV *od = coro->on_destroy;
2146
2147 if (!od)
2148 return;
2149
2150 while (AvFILLp (od) >= 0)
2151 {
2152 SV *cb = sv_2mortal (av_pop (od));
2153
2154 /* coro hv's (and only hv's at the moment) are supported as well */
2155 if (SvSTATEhv_p (aTHX_ cb))
2156 api_ready (aTHX_ cb);
2157 else
2158 {
2159 dSP; /* don't disturb outer sp */
2160 PUSHMARK (SP);
2161
2162 if (coro->status)
2163 {
2164 PUTBACK;
2165 coro_push_av (aTHX_ coro->status, G_ARRAY);
2166 SPAGAIN;
2167 }
2168
2169 PUTBACK;
2170 call_sv (cb, G_VOID | G_DISCARD);
2171 }
2172 }
2173}
2174
2175static void
2176coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2177{
2178 AV *av;
2179
2180 if (coro->status)
2181 {
2182 av = coro->status;
2183 av_clear (av);
2184 }
2185 else
2186 av = coro->status = newAV ();
2187
2188 /* items are actually not so common, so optimise for this case */
2189 if (items)
2190 {
2191 int i;
2192
2193 av_extend (av, items - 1);
2194
2195 for (i = 0; i < items; ++i)
2196 av_push (av, SvREFCNT_inc_NN (arg [i]));
2197 }
2198}
2199
2200static void
2201slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2202{
2203 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2204 api_ready (aTHX_ sv_manager);
2205
2206 frame->prepare = prepare_schedule;
2207 frame->check = slf_check_repeat;
2208
2209 /* as a minor optimisation, we could unwind all stacks here */
2210 /* but that puts extra pressure on pp_slf, and is not worth much */
2211 /*coro_unwind_stacks (aTHX);*/
2212}
2213
2214static void
2215slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 HV *coro_hv = (HV *)SvRV (coro_current);
2218
2219 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221}
2222
2223static void
2224slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2225{
2226 HV *coro_hv;
2227 struct coro *coro;
2228
2229 if (items <= 0)
2230 croak ("Coro::cancel called without coro object,");
2231
2232 coro = SvSTATE (arg [0]);
2233 coro_hv = coro->hv;
2234
2235 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2236
2237 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2238 {
2239 /* coro currently busy cancelling something, so just notify it */
2240 coro->slf_frame.data = (void *)coro;
2241
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 else if (coro_hv == (HV *)SvRV (coro_current))
2246 {
2247 /* cancelling the current coro is allowed, and equals terminate */
2248 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2249 }
2250 else
2251 {
2252 struct coro *self = SvSTATE_current;
2253
2254 /* otherwise we cancel directly, purely for speed reasons
2255 * unfortunately, this requires some magic trickery, as
2256 * somebody else could cancel us, so we have to fight the cancellation.
2257 * this is ugly, and hopefully fully worth the extra speed.
2258 * besides, I can't get the slow-but-safe version working...
2259 */
2260 slf_frame.data = 0;
2261 self->flags |= CF_NOCANCEL;
2262 coro_state_destroy (aTHX_ coro);
2263 self->flags &= ~CF_NOCANCEL;
2264
2265 if (slf_frame.data)
2266 {
2267 /* while we were busy we have been cancelled, so terminate */
2268 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2269 }
2270 else
2271 {
2272 frame->prepare = prepare_nop;
2273 frame->check = slf_check_nop;
2274 }
2275 }
2276}
2277
2278static int
2279slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2280{
2281 frame->prepare = 0;
2282 coro_unwind_stacks (aTHX);
2283
2284 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2285
2286 return 1;
2287}
2288
2289static int
2290safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2291{
2292 if (coro->cctx)
2293 croak ("coro inside C callback, unable to cancel at this time, caught");
2294
2295 if (coro->flags & CF_NEW)
2296 {
2297 coro_set_status (aTHX_ coro, arg, items);
2298 coro_state_destroy (aTHX_ coro);
2299 }
2300 else
2301 {
2302 if (!coro->slf_frame.prepare)
2303 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2304
2305 slf_destroy (aTHX_ coro);
2306
2307 coro_set_status (aTHX_ coro, arg, items);
2308 coro->slf_frame.prepare = prepare_nop;
2309 coro->slf_frame.check = slf_check_safe_cancel;
2310
2311 api_ready (aTHX_ (SV *)coro->hv);
2312 }
2313
2314 return 1;
2315}
2316
2317/*****************************************************************************/
2318/* async pool handler */
2319
2320static int
2321slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = (struct coro *)frame->data;
2325
2326 if (!coro->invoke_cb)
2327 return 1; /* loop till we have invoke */
2328 else
2329 {
2330 hv_store (hv, "desc", sizeof ("desc") - 1,
2331 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2332
2333 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2334
2335 {
2336 dSP;
2337 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2338 PUTBACK;
2339 }
2340
2341 SvREFCNT_dec (GvAV (PL_defgv));
2342 GvAV (PL_defgv) = coro->invoke_av;
2343 coro->invoke_av = 0;
2344
2345 return 0;
2346 }
2347}
2348
2349static void
2350slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2351{
2352 HV *hv = (HV *)SvRV (coro_current);
2353 struct coro *coro = SvSTATE_hv ((SV *)hv);
2354
2355 if (ecb_expect_true (coro->saved_deffh))
2356 {
2357 /* subsequent iteration */
2358 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2359 coro->saved_deffh = 0;
2360
2361 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2362 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2363 {
2364 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2365 return;
2366 }
2367 else
2368 {
2369 av_clear (GvAV (PL_defgv));
2370 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2371
2372 coro->prio = 0;
2373
2374 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2375 api_trace (aTHX_ coro_current, 0);
2376
2377 frame->prepare = prepare_schedule;
2378 av_push (av_async_pool, SvREFCNT_inc (hv));
2379 }
2380 }
2381 else
2382 {
2383 /* first iteration, simply fall through */
2384 frame->prepare = prepare_nop;
2385 }
2386
2387 frame->check = slf_check_pool_handler;
2388 frame->data = (void *)coro;
2389}
2390
2391/*****************************************************************************/
2392/* rouse callback */
2393
2394#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2395
2396static void
2397coro_rouse_callback (pTHX_ CV *cv)
2398{
2399 dXSARGS;
2400 SV *data = (SV *)S_GENSUB_ARG;
2401
2402 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2403 {
2404 /* first call, set args */
2405 SV *coro = SvRV (data);
2406 AV *av = newAV ();
2407
2408 SvRV_set (data, (SV *)av);
2409
2410 /* better take a full copy of the arguments */
2411 while (items--)
2412 av_store (av, items, newSVsv (ST (items)));
2413
2414 api_ready (aTHX_ coro);
2415 SvREFCNT_dec (coro);
2416 }
2417
2418 XSRETURN_EMPTY;
2419}
2420
2421static int
2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2423{
2424 SV *data = (SV *)frame->data;
2425
2426 if (CORO_THROW)
2427 return 0;
2428
2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2430 return 1;
2431
2432 /* now push all results on the stack */
2433 {
2434 dSP;
2435 AV *av = (AV *)SvRV (data);
2436 int i;
2437
2438 EXTEND (SP, AvFILLp (av) + 1);
2439 for (i = 0; i <= AvFILLp (av); ++i)
2440 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2441
2442 /* we have stolen the elements, so set length to zero and free */
2443 AvFILLp (av) = -1;
2444 av_undef (av);
2445
2446 PUTBACK;
2447 }
2448
2449 return 0;
2450}
2451
2452static void
2453slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2454{
2455 SV *cb;
2456
2457 if (items)
2458 cb = arg [0];
2459 else
2460 {
2461 struct coro *coro = SvSTATE_current;
2462
2463 if (!coro->rouse_cb)
2464 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2465
2466 cb = sv_2mortal (coro->rouse_cb);
2467 coro->rouse_cb = 0;
2468 }
2469
2470 if (!SvROK (cb)
2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2473 croak ("Coro::rouse_wait called with illegal callback argument,");
2474
2475 {
2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2477 SV *data = (SV *)S_GENSUB_ARG;
2478
2479 frame->data = (void *)data;
2480 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2481 frame->check = slf_check_rouse_wait;
2482 }
2483}
2484
2485static SV *
2486coro_new_rouse_cb (pTHX)
2487{
2488 HV *hv = (HV *)SvRV (coro_current);
2489 struct coro *coro = SvSTATE_hv (hv);
2490 SV *data = newRV_inc ((SV *)hv);
2491 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2492
2493 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2494 SvREFCNT_dec (data); /* magicext increases the refcount */
2495
2496 SvREFCNT_dec (coro->rouse_cb);
2497 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2498
2499 return cb;
2500}
2501
2502/*****************************************************************************/
2503/* schedule-like-function opcode (SLF) */
2504
2505static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2506static const CV *slf_cv;
2507static SV **slf_argv;
2508static int slf_argc, slf_arga; /* count, allocated */
2509static I32 slf_ax; /* top of stack, for restore */
2510
2511/* this restores the stack in the case we patched the entersub, to */
2512/* recreate the stack frame as perl will on following calls */
2513/* since entersub cleared the stack */
2514static OP *
2515pp_restore (pTHX)
2516{
2517 int i;
2518 SV **SP = PL_stack_base + slf_ax;
2519
2520 PUSHMARK (SP);
2521
2522 EXTEND (SP, slf_argc + 1);
2523
2524 for (i = 0; i < slf_argc; ++i)
2525 PUSHs (sv_2mortal (slf_argv [i]));
2526
2527 PUSHs ((SV *)CvGV (slf_cv));
2528
2529 RETURNOP (slf_restore.op_first);
2530}
2531
2532static void
2533slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2534{
2535 SV **arg = (SV **)slf_frame.data;
2536
2537 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2538}
2539
2540static void
2541slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2542{
2543 if (items != 2)
2544 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2545
2546 frame->prepare = slf_prepare_transfer;
2547 frame->check = slf_check_nop;
2548 frame->data = (void *)arg; /* let's hope it will stay valid */
2549}
2550
2551static void
2552slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2553{
2554 frame->prepare = prepare_schedule;
2555 frame->check = slf_check_nop;
2556}
2557
2558static void
2559slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2560{
2561 struct coro *next = (struct coro *)slf_frame.data;
2562
2563 SvREFCNT_inc_NN (next->hv);
2564 prepare_schedule_to (aTHX_ ta, next);
2565}
2566
2567static void
2568slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 if (!items)
2571 croak ("Coro::schedule_to expects a coroutine argument, caught");
2572
2573 frame->data = (void *)SvSTATE (arg [0]);
2574 frame->prepare = slf_prepare_schedule_to;
2575 frame->check = slf_check_nop;
2576}
2577
2578static void
2579slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2580{
2581 api_ready (aTHX_ SvRV (coro_current));
2582
2583 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2584}
2585
2586static void
2587slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2588{
2589 frame->prepare = prepare_cede;
2590 frame->check = slf_check_nop;
2591}
2592
2593static void
2594slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2595{
2596 frame->prepare = prepare_cede_notself;
2597 frame->check = slf_check_nop;
2598}
2599
2600/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2601static void
2602slf_destroy (pTHX_ struct coro *coro)
2603{
2604 /* this callback is reserved for slf functions needing to do cleanup */
2605 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2606 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2607
2608 /*
2609 * The on_destroy above most likely is from an SLF call.
2610 * Since by definition the SLF call will not finish when we destroy
2611 * the coro, we will have to force-finish it here, otherwise
2612 * cleanup functions cannot call SLF functions.
2613 */
2614 coro->slf_frame.prepare = 0;
2615}
2616
2617/*
2618 * these not obviously related functions are all rolled into one
2619 * function to increase chances that they all will call transfer with the same
2620 * stack offset
2621 * SLF stands for "schedule-like-function".
2622 */
2623static OP *
2624pp_slf (pTHX)
2625{
2626 I32 checkmark; /* mark SP to see how many elements check has pushed */
2627
2628 /* set up the slf frame, unless it has already been set-up */
2629 /* the latter happens when a new coro has been started */
2630 /* or when a new cctx was attached to an existing coroutine */
2631 if (ecb_expect_true (!slf_frame.prepare))
2632 {
2633 /* first iteration */
2634 dSP;
2635 SV **arg = PL_stack_base + TOPMARK + 1;
2636 int items = SP - arg; /* args without function object */
2637 SV *gv = *sp;
2638
2639 /* do a quick consistency check on the "function" object, and if it isn't */
2640 /* for us, divert to the real entersub */
2641 if (SvTYPE (gv) != SVt_PVGV
2642 || !GvCV (gv)
2643 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2644 return PL_ppaddr[OP_ENTERSUB](aTHX);
2645
2646 if (!(PL_op->op_flags & OPf_STACKED))
2647 {
2648 /* ampersand-form of call, use @_ instead of stack */
2649 AV *av = GvAV (PL_defgv);
2650 arg = AvARRAY (av);
2651 items = AvFILLp (av) + 1;
2652 }
2653
2654 /* now call the init function, which needs to set up slf_frame */
2655 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2656 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2657
2658 /* pop args */
2659 SP = PL_stack_base + POPMARK;
2660
2661 PUTBACK;
2662 }
2663
2664 /* now that we have a slf_frame, interpret it! */
2665 /* we use a callback system not to make the code needlessly */
2666 /* complicated, but so we can run multiple perl coros from one cctx */
2667
2668 do
2669 {
2670 struct coro_transfer_args ta;
2671
2672 slf_frame.prepare (aTHX_ &ta);
2673 TRANSFER (ta, 0);
2674
2675 checkmark = PL_stack_sp - PL_stack_base;
2676 }
2677 while (slf_frame.check (aTHX_ &slf_frame));
2678
2679 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2680
2681 /* exception handling */
2682 if (ecb_expect_false (CORO_THROW))
2683 {
2684 SV *exception = sv_2mortal (CORO_THROW);
2685
2686 CORO_THROW = 0;
2687 sv_setsv (ERRSV, exception);
2688 croak (0);
2689 }
2690
2691 /* return value handling - mostly like entersub */
2692 /* make sure we put something on the stack in scalar context */
2693 if (GIMME_V == G_SCALAR
2694 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2695 {
2696 dSP;
2697 SV **bot = PL_stack_base + checkmark;
2698
2699 if (sp == bot) /* too few, push undef */
2700 bot [1] = &PL_sv_undef;
2701 else /* too many, take last one */
2702 bot [1] = *sp;
2703
2704 SP = bot + 1;
2705
2706 PUTBACK;
2707 }
2708
2709 return NORMAL;
2710}
2711
2712static void
2713api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2714{
2715 int i;
2716 SV **arg = PL_stack_base + ax;
2717 int items = PL_stack_sp - arg + 1;
2718
2719 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2720
2721 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2722 && PL_op->op_ppaddr != pp_slf)
2723 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2724
2725 CvFLAGS (cv) |= CVf_SLF;
2726 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2727 slf_cv = cv;
2728
2729 /* we patch the op, and then re-run the whole call */
2730 /* we have to put the same argument on the stack for this to work */
2731 /* and this will be done by pp_restore */
2732 slf_restore.op_next = (OP *)&slf_restore;
2733 slf_restore.op_type = OP_CUSTOM;
2734 slf_restore.op_ppaddr = pp_restore;
2735 slf_restore.op_first = PL_op;
2736
2737 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2738
2739 if (PL_op->op_flags & OPf_STACKED)
2740 {
2741 if (items > slf_arga)
2742 {
2743 slf_arga = items;
2744 Safefree (slf_argv);
2745 New (0, slf_argv, slf_arga, SV *);
2746 }
2747
2748 slf_argc = items;
2749
2750 for (i = 0; i < items; ++i)
2751 slf_argv [i] = SvREFCNT_inc (arg [i]);
2752 }
2753 else
2754 slf_argc = 0;
2755
2756 PL_op->op_ppaddr = pp_slf;
2757 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2758
2759 PL_op = (OP *)&slf_restore;
2760}
2761
2762/*****************************************************************************/
2763/* dynamic wind */
2764
2765static void
2766on_enterleave_call (pTHX_ SV *cb)
2767{
2768 dSP;
2769
2770 PUSHSTACK;
2771
2772 PUSHMARK (SP);
2773 PUTBACK;
2774 call_sv (cb, G_VOID | G_DISCARD);
2775 SPAGAIN;
2776
2777 POPSTACK;
2778}
2779
2780static SV *
2781coro_avp_pop_and_free (pTHX_ AV **avp)
2782{
2783 AV *av = *avp;
2784 SV *res = av_pop (av);
2785
2786 if (AvFILLp (av) < 0)
2787 {
2788 *avp = 0;
2789 SvREFCNT_dec (av);
2790 }
2791
2792 return res;
2793}
2794
2795static void
2796coro_pop_on_enter (pTHX_ void *coro)
2797{
2798 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2799 SvREFCNT_dec (cb);
2800}
2801
2802static void
2803coro_pop_on_leave (pTHX_ void *coro)
2804{
2805 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2806 on_enterleave_call (aTHX_ sv_2mortal (cb));
2807}
1742 2808
1743/*****************************************************************************/ 2809/*****************************************************************************/
1744/* PerlIO::cede */ 2810/* PerlIO::cede */
1745 2811
1746typedef struct 2812typedef struct
1747{ 2813{
1748 PerlIOBuf base; 2814 PerlIOBuf base;
1749 NV next, every; 2815 NV next, every;
1750} PerlIOCede; 2816} PerlIOCede;
1751 2817
1752static IV 2818static IV ecb_cold
1753PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2819PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1754{ 2820{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2821 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756 2822
1757 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2823 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1758 self->next = nvtime () + self->every; 2824 self->next = nvtime () + self->every;
1759 2825
1760 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2826 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1761} 2827}
1762 2828
1763static SV * 2829static SV * ecb_cold
1764PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2830PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1765{ 2831{
1766 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2832 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1767 2833
1768 return newSVnv (self->every); 2834 return newSVnv (self->every);
… …
1814 PerlIOBuf_get_cnt, 2880 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2881 PerlIOBuf_set_ptrcnt,
1816}; 2882};
1817 2883
1818/*****************************************************************************/ 2884/*****************************************************************************/
2885/* Coro::Semaphore & Coro::Signal */
1819 2886
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2887static SV *
1831pp_restore (pTHX) 2888coro_waitarray_new (pTHX_ int count)
1832{ 2889{
1833 dSP; 2890 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2891 AV *av = newAV ();
2892 SV **ary;
1834 2893
1835 PUSHMARK (SP); 2894 /* unfortunately, building manually saves memory */
2895 Newx (ary, 2, SV *);
2896 AvALLOC (av) = ary;
2897#if PERL_VERSION_ATLEAST (5,10,0)
2898 AvARRAY (av) = ary;
2899#else
2900 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2901 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2902 SvPVX ((SV *)av) = (char *)ary;
2903#endif
2904 AvMAX (av) = 1;
2905 AvFILLp (av) = 0;
2906 ary [0] = newSViv (count);
1836 2907
1837 EXTEND (SP, 3); 2908 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2909}
1845 2910
1846static void 2911/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2912
1852static void 2913static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2914coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2915{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2916 SV *count_sv = AvARRAY (av)[0];
2917 IV count = SvIVX (count_sv);
1856 2918
1857 frame->prepare = slf_prepare_set_stacklevel; 2919 count += adjust;
1858 frame->check = slf_check_nop; 2920 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2921
1862static void 2922 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2923 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2924 {
1921 /* first iteration */ 2925 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2926
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2927 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2928 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2929 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2930 cb = av_shift (av);
1931 2931
1932 /* pop args */ 2932 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2933 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2934 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2935 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2936 }
1942 2937 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2938 {
1973 if (sp == bot) 2939 dSP;
1974 XPUSHs (&PL_sv_undef); 2940 PUSHMARK (SP);
1975 2941 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2942 PUTBACK;
2943 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2944 }
1978 2945
1979 PUTBACK; 2946 SvREFCNT_dec (cb);
1980 } 2947 }
1981
1982 return NORMAL;
1983} 2948}
1984 2949
1985static void 2950static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2951coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
1987{ 2952{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2953 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2954 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2955}
2017
2018/*****************************************************************************/
2019 2956
2020static int 2957static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2958slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2959{
2023 AV *av = (AV *)frame->data; 2960 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2961 SV *count_sv = AvARRAY (av)[0];
2962 SV *coro_hv = SvRV (coro_current);
2025 2963
2964 /* if we are about to throw, don't actually acquire the lock, just throw */
2965 if (CORO_THROW)
2966 return 0;
2026 if (SvIVX (count_sv) > 0) 2967 else if (SvIVX (count_sv) > 0)
2027 { 2968 {
2969 frame->destroy = 0;
2970
2971 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2972 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2973 else
2974 coro_semaphore_adjust (aTHX_ av, 0);
2975
2029 return 0; 2976 return 0;
2030 } 2977 }
2031 else 2978 else
2032 { 2979 {
2033 int i; 2980 int i;
2034 /* if we were woken up but can't down, we look through the whole */ 2981 /* if we were woken up but can't down, we look through the whole */
2035 /* waiters list and only add us if we aren't in there already */ 2982 /* waiters list and only add us if we aren't in there already */
2036 /* this avoids some degenerate memory usage cases */ 2983 /* this avoids some degenerate memory usage cases */
2037 2984 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2038 for (i = 1; i <= AvFILLp (av); ++i)
2039 if (AvARRAY (av)[i] == SvRV (coro_current)) 2985 if (AvARRAY (av)[i] == coro_hv)
2040 return 1; 2986 return 1;
2041 2987
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2988 av_push (av, SvREFCNT_inc (coro_hv));
2043 return 1; 2989 return 1;
2044 } 2990 }
2045} 2991}
2046 2992
2047static void 2993static int
2994slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2995{
2996 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2997}
2998
2999static int
3000slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3001{
3002 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3003}
3004
3005static void
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 3006slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 3007{
2050 AV *av = (AV *)SvRV (arg [0]); 3008 AV *av = (AV *)SvRV (arg [0]);
2051 3009
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 3010 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 3011 {
… …
2058 { 3016 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3017 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 3018
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3019 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 3020 frame->prepare = prepare_schedule;
3021 /* to avoid race conditions when a woken-up coro gets terminated */
3022 /* we arrange for a temporary on_destroy that calls adjust (0) */
3023 frame->destroy = coro_semaphore_destroy;
2063 } 3024 }
3025}
2064 3026
3027static void
3028slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3029{
3030 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2065 frame->check = slf_check_semaphore_down; 3031 frame->check = slf_check_semaphore_down;
2066
2067} 3032}
3033
3034static void
3035slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3036{
3037 if (items >= 2)
3038 {
3039 /* callback form */
3040 AV *av = (AV *)SvRV (arg [0]);
3041 SV *cb_cv = s_get_cv_croak (arg [1]);
3042
3043 av_push (av, SvREFCNT_inc_NN (cb_cv));
3044
3045 if (SvIVX (AvARRAY (av)[0]) > 0)
3046 coro_semaphore_adjust (aTHX_ av, 0);
3047
3048 frame->prepare = prepare_nop;
3049 frame->check = slf_check_nop;
3050 }
3051 else
3052 {
3053 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3054 frame->check = slf_check_semaphore_wait;
3055 }
3056}
3057
3058/* signal */
3059
3060static void
3061coro_signal_wake (pTHX_ AV *av, int count)
3062{
3063 SvIVX (AvARRAY (av)[0]) = 0;
3064
3065 /* now signal count waiters */
3066 while (count > 0 && AvFILLp (av) > 0)
3067 {
3068 SV *cb;
3069
3070 /* swap first two elements so we can shift a waiter */
3071 cb = AvARRAY (av)[0];
3072 AvARRAY (av)[0] = AvARRAY (av)[1];
3073 AvARRAY (av)[1] = cb;
3074
3075 cb = av_shift (av);
3076
3077 if (SvTYPE (cb) == SVt_PVCV)
3078 {
3079 dSP;
3080 PUSHMARK (SP);
3081 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3082 PUTBACK;
3083 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3084 }
3085 else
3086 {
3087 api_ready (aTHX_ cb);
3088 sv_setiv (cb, 0); /* signal waiter */
3089 }
3090
3091 SvREFCNT_dec (cb);
3092
3093 --count;
3094 }
3095}
3096
3097static int
3098slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3099{
3100 /* if we are about to throw, also stop waiting */
3101 return SvROK ((SV *)frame->data) && !CORO_THROW;
3102}
3103
3104static void
3105slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3106{
3107 AV *av = (AV *)SvRV (arg [0]);
3108
3109 if (items >= 2)
3110 {
3111 SV *cb_cv = s_get_cv_croak (arg [1]);
3112 av_push (av, SvREFCNT_inc_NN (cb_cv));
3113
3114 if (SvIVX (AvARRAY (av)[0]))
3115 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3116
3117 frame->prepare = prepare_nop;
3118 frame->check = slf_check_nop;
3119 }
3120 else if (SvIVX (AvARRAY (av)[0]))
3121 {
3122 SvIVX (AvARRAY (av)[0]) = 0;
3123 frame->prepare = prepare_nop;
3124 frame->check = slf_check_nop;
3125 }
3126 else
3127 {
3128 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3129
3130 av_push (av, waiter);
3131
3132 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3133 frame->prepare = prepare_schedule;
3134 frame->check = slf_check_signal_wait;
3135 }
3136}
3137
3138/*****************************************************************************/
3139/* Coro::AIO */
3140
3141#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3142
3143/* helper storage struct */
3144struct io_state
3145{
3146 int errorno;
3147 I32 laststype; /* U16 in 5.10.0 */
3148 int laststatval;
3149 Stat_t statcache;
3150};
3151
3152static void
3153coro_aio_callback (pTHX_ CV *cv)
3154{
3155 dXSARGS;
3156 AV *state = (AV *)S_GENSUB_ARG;
3157 SV *coro = av_pop (state);
3158 SV *data_sv = newSV (sizeof (struct io_state));
3159
3160 av_extend (state, items - 1);
3161
3162 sv_upgrade (data_sv, SVt_PV);
3163 SvCUR_set (data_sv, sizeof (struct io_state));
3164 SvPOK_only (data_sv);
3165
3166 {
3167 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3168
3169 data->errorno = errno;
3170 data->laststype = PL_laststype;
3171 data->laststatval = PL_laststatval;
3172 data->statcache = PL_statcache;
3173 }
3174
3175 /* now build the result vector out of all the parameters and the data_sv */
3176 {
3177 int i;
3178
3179 for (i = 0; i < items; ++i)
3180 av_push (state, SvREFCNT_inc_NN (ST (i)));
3181 }
3182
3183 av_push (state, data_sv);
3184
3185 api_ready (aTHX_ coro);
3186 SvREFCNT_dec (coro);
3187 SvREFCNT_dec ((AV *)state);
3188}
3189
3190static int
3191slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3192{
3193 AV *state = (AV *)frame->data;
3194
3195 /* if we are about to throw, return early */
3196 /* this does not cancel the aio request, but at least */
3197 /* it quickly returns */
3198 if (CORO_THROW)
3199 return 0;
3200
3201 /* one element that is an RV? repeat! */
3202 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3203 return 1;
3204
3205 /* restore status */
3206 {
3207 SV *data_sv = av_pop (state);
3208 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3209
3210 errno = data->errorno;
3211 PL_laststype = data->laststype;
3212 PL_laststatval = data->laststatval;
3213 PL_statcache = data->statcache;
3214
3215 SvREFCNT_dec (data_sv);
3216 }
3217
3218 /* push result values */
3219 {
3220 dSP;
3221 int i;
3222
3223 EXTEND (SP, AvFILLp (state) + 1);
3224 for (i = 0; i <= AvFILLp (state); ++i)
3225 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3226
3227 PUTBACK;
3228 }
3229
3230 return 0;
3231}
3232
3233static void
3234slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3235{
3236 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3237 SV *coro_hv = SvRV (coro_current);
3238 struct coro *coro = SvSTATE_hv (coro_hv);
3239
3240 /* put our coroutine id on the state arg */
3241 av_push (state, SvREFCNT_inc_NN (coro_hv));
3242
3243 /* first see whether we have a non-zero priority and set it as AIO prio */
3244 if (coro->prio)
3245 {
3246 dSP;
3247
3248 static SV *prio_cv;
3249 static SV *prio_sv;
3250
3251 if (ecb_expect_false (!prio_cv))
3252 {
3253 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3254 prio_sv = newSViv (0);
3255 }
3256
3257 PUSHMARK (SP);
3258 sv_setiv (prio_sv, coro->prio);
3259 XPUSHs (prio_sv);
3260
3261 PUTBACK;
3262 call_sv (prio_cv, G_VOID | G_DISCARD);
3263 }
3264
3265 /* now call the original request */
3266 {
3267 dSP;
3268 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3269 int i;
3270
3271 PUSHMARK (SP);
3272
3273 /* first push all args to the stack */
3274 EXTEND (SP, items + 1);
3275
3276 for (i = 0; i < items; ++i)
3277 PUSHs (arg [i]);
3278
3279 /* now push the callback closure */
3280 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3281
3282 /* now call the AIO function - we assume our request is uncancelable */
3283 PUTBACK;
3284 call_sv ((SV *)req, G_VOID | G_DISCARD);
3285 }
3286
3287 /* now that the request is going, we loop till we have a result */
3288 frame->data = (void *)state;
3289 frame->prepare = prepare_schedule;
3290 frame->check = slf_check_aio_req;
3291}
3292
3293static void
3294coro_aio_req_xs (pTHX_ CV *cv)
3295{
3296 dXSARGS;
3297
3298 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3299
3300 XSRETURN_EMPTY;
3301}
3302
3303/*****************************************************************************/
3304
3305#if CORO_CLONE
3306# include "clone.c"
3307#endif
3308
3309/*****************************************************************************/
3310
3311static SV *
3312coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3313{
3314 SV *coro_sv;
3315 struct coro *coro;
3316 MAGIC *mg;
3317 HV *hv;
3318 SV *cb;
3319 int i;
3320
3321 if (argc > 0)
3322 {
3323 cb = s_get_cv_croak (argv [0]);
3324
3325 if (!is_coro)
3326 {
3327 if (CvISXSUB (cb))
3328 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3329
3330 if (!CvROOT (cb))
3331 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3332 }
3333 }
3334
3335 Newz (0, coro, 1, struct coro);
3336 coro->args = newAV ();
3337 coro->flags = CF_NEW;
3338
3339 if (coro_first) coro_first->prev = coro;
3340 coro->next = coro_first;
3341 coro_first = coro;
3342
3343 coro->hv = hv = newHV ();
3344 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3345 mg->mg_flags |= MGf_DUP;
3346 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3347
3348 if (argc > 0)
3349 {
3350 av_extend (coro->args, argc + is_coro - 1);
3351
3352 if (is_coro)
3353 {
3354 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3355 cb = (SV *)cv_coro_run;
3356 }
3357
3358 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3359
3360 for (i = 1; i < argc; i++)
3361 av_push (coro->args, newSVsv (argv [i]));
3362 }
3363
3364 return coro_sv;
3365}
3366
3367#ifndef __cplusplus
3368ecb_cold XS(boot_Coro__State);
3369#endif
3370
3371#if CORO_JIT
3372
3373static void ecb_noinline ecb_cold
3374pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3375{
3376 dSP;
3377 AV *av = newAV ();
3378
3379 av_store (av, 3, newSVuv (d));
3380 av_store (av, 2, newSVuv (c));
3381 av_store (av, 1, newSVuv (b));
3382 av_store (av, 0, newSVuv (a));
3383
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3385
3386 PUTBACK;
3387}
3388
3389static void ecb_noinline ecb_cold
3390jit_init (pTHX)
3391{
3392 dSP;
3393 SV *load, *save;
3394 char *map_base;
3395 char *load_ptr, *save_ptr;
3396 STRLEN load_len, save_len, map_len;
3397 int count;
3398
3399 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3400
3401 PUSHMARK (SP);
3402 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3403 #include "state.h"
3404 count = call_pv ("Coro::State::_jit", G_ARRAY);
3405 SPAGAIN;
3406
3407 save = POPs; save_ptr = SvPVbyte (save, save_len);
3408 load = POPs; load_ptr = SvPVbyte (load, load_len);
3409
3410 map_len = load_len + save_len + 16;
3411
3412 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3413
3414 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3415
3416 load_perl_slots = (load_save_perl_slots_type)map_base;
3417 memcpy (map_base, load_ptr, load_len);
3418
3419 map_base += (load_len + 15) & ~15;
3420
3421 save_perl_slots = (load_save_perl_slots_type)map_base;
3422 memcpy (map_base, save_ptr, save_len);
3423
3424 /* we are good citizens and try to make the page read-only, so the evil evil */
3425 /* hackers might have it a bit more difficult */
3426 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3427
3428 PUTBACK;
3429 eval_pv ("undef &Coro::State::_jit", 1);
3430}
3431
3432#endif
2068 3433
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3434MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 3435
2071PROTOTYPES: DISABLE 3436PROTOTYPES: DISABLE
2072 3437
2073BOOT: 3438BOOT:
2074{ 3439{
2075#ifdef USE_ITHREADS 3440#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 3441# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 3442 coro_thx = PERL_GET_CONTEXT;
2079# endif 3443# endif
2080#endif 3444#endif
2081 BOOT_PAGESIZE; 3445 BOOT_PAGESIZE;
3446
3447 /* perl defines these to check for existance first, but why it doesn't */
3448 /* just create them one at init time is not clear to me, except for */
3449 /* programs trying to delete them, but... */
3450 /* anyway, we declare this as invalid and make sure they are initialised here */
3451 DEFSV;
3452 ERRSV;
3453
3454 cctx_current = cctx_new_empty ();
2082 3455
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3456 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3457 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 3458
2086 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3459 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2101 main_mainstack = PL_mainstack; 3474 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 3475 main_top_env = PL_top_env;
2103 3476
2104 while (main_top_env->je_prev) 3477 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 3478 main_top_env = main_top_env->je_prev;
3479
3480 {
3481 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3482
3483 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3484 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3485
3486 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3487 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3488 }
2106 3489
2107 coroapi.ver = CORO_API_VERSION; 3490 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 3491 coroapi.rev = CORO_API_REVISION;
2109 3492
2110 coroapi.transfer = api_transfer; 3493 coroapi.transfer = api_transfer;
… …
2114 coroapi.prepare_nop = prepare_nop; 3497 coroapi.prepare_nop = prepare_nop;
2115 coroapi.prepare_schedule = prepare_schedule; 3498 coroapi.prepare_schedule = prepare_schedule;
2116 coroapi.prepare_cede = prepare_cede; 3499 coroapi.prepare_cede = prepare_cede;
2117 coroapi.prepare_cede_notself = prepare_cede_notself; 3500 coroapi.prepare_cede_notself = prepare_cede_notself;
2118 3501
2119 { 3502 time_init (aTHX);
2120 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2121 3503
2122 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124
2125 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2126 }
2127
2128 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3504 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3505#if CORO_JIT
3506 PUTBACK;
3507 jit_init (aTHX);
3508 SPAGAIN;
3509#endif
2129} 3510}
2130 3511
2131SV * 3512SV *
2132new (char *klass, ...) 3513new (SV *klass, ...)
3514 ALIAS:
3515 Coro::new = 1
2133 CODE: 3516 CODE:
2134{ 3517 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2135 struct coro *coro; 3518 OUTPUT:
2136 MAGIC *mg;
2137 HV *hv;
2138 int i;
2139
2140 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV ();
2142 coro->flags = CF_NEW;
2143
2144 if (coro_first) coro_first->prev = coro;
2145 coro->next = coro_first;
2146 coro_first = coro;
2147
2148 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152
2153 av_extend (coro->args, items - 1);
2154 for (i = 1; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i)));
2156}
2157 OUTPUT:
2158 RETVAL 3519 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 3520
2165void 3521void
2166transfer (...) 3522transfer (...)
3523 PROTOTYPE: $$
2167 CODE: 3524 CODE:
2168 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3525 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2169
2170bool
2171_destroy (SV *coro_sv)
2172 CODE:
2173 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2174 OUTPUT:
2175 RETVAL
2176 3526
2177void 3527void
2178_exit (int code) 3528_exit (int code)
2179 PROTOTYPE: $ 3529 PROTOTYPE: $
2180 CODE: 3530 CODE:
2181 _exit (code); 3531 _exit (code);
3532
3533SV *
3534clone (Coro::State coro)
3535 CODE:
3536{
3537#if CORO_CLONE
3538 struct coro *ncoro = coro_clone (aTHX_ coro);
3539 MAGIC *mg;
3540 /* TODO: too much duplication */
3541 ncoro->hv = newHV ();
3542 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3543 mg->mg_flags |= MGf_DUP;
3544 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3545#else
3546 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3547#endif
3548}
3549 OUTPUT:
3550 RETVAL
2182 3551
2183int 3552int
2184cctx_stacksize (int new_stacksize = 0) 3553cctx_stacksize (int new_stacksize = 0)
2185 PROTOTYPE: ;$ 3554 PROTOTYPE: ;$
2186 CODE: 3555 CODE:
… …
2236 eval = 1 3605 eval = 1
2237 CODE: 3606 CODE:
2238{ 3607{
2239 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3608 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2240 { 3609 {
2241 struct coro temp; 3610 struct coro *current = SvSTATE_current;
3611 struct CoroSLF slf_save;
2242 3612
2243 if (!(coro->flags & CF_RUNNING)) 3613 if (current != coro)
2244 { 3614 {
2245 PUTBACK; 3615 PUTBACK;
2246 save_perl (aTHX_ &temp); 3616 save_perl (aTHX_ current);
2247 load_perl (aTHX_ coro); 3617 load_perl (aTHX_ coro);
3618 /* the coro is most likely in an active SLF call.
3619 * while not strictly required (the code we execute is
3620 * not allowed to call any SLF functions), it's cleaner
3621 * to reinitialise the slf_frame and restore it later.
3622 * This might one day allow us to actually do SLF calls
3623 * from code executed here.
3624 */
3625 slf_save = slf_frame;
3626 slf_frame.prepare = 0;
3627 SPAGAIN;
2248 } 3628 }
2249 3629
2250 {
2251 dSP;
2252 ENTER;
2253 SAVETMPS;
2254 PUTBACK;
2255 PUSHSTACK; 3630 PUSHSTACK;
3631
2256 PUSHMARK (SP); 3632 PUSHMARK (SP);
3633 PUTBACK;
2257 3634
2258 if (ix) 3635 if (ix)
2259 eval_sv (coderef, 0); 3636 eval_sv (coderef, 0);
2260 else 3637 else
2261 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3638 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2262 3639
2263 POPSTACK; 3640 POPSTACK;
2264 SPAGAIN; 3641 SPAGAIN;
2265 FREETMPS;
2266 LEAVE;
2267 PUTBACK;
2268 }
2269 3642
2270 if (!(coro->flags & CF_RUNNING)) 3643 if (current != coro)
2271 { 3644 {
3645 PUTBACK;
3646 slf_frame = slf_save;
2272 save_perl (aTHX_ coro); 3647 save_perl (aTHX_ coro);
2273 load_perl (aTHX_ &temp); 3648 load_perl (aTHX_ current);
2274 SPAGAIN; 3649 SPAGAIN;
2275 } 3650 }
2276 } 3651 }
2277} 3652}
2278 3653
… …
2281 PROTOTYPE: $ 3656 PROTOTYPE: $
2282 ALIAS: 3657 ALIAS:
2283 is_ready = CF_READY 3658 is_ready = CF_READY
2284 is_running = CF_RUNNING 3659 is_running = CF_RUNNING
2285 is_new = CF_NEW 3660 is_new = CF_NEW
2286 is_destroyed = CF_DESTROYED 3661 is_destroyed = CF_ZOMBIE
3662 is_zombie = CF_ZOMBIE
3663 is_suspended = CF_SUSPENDED
2287 CODE: 3664 CODE:
2288 RETVAL = boolSV (coro->flags & ix); 3665 RETVAL = boolSV (coro->flags & ix);
2289 OUTPUT: 3666 OUTPUT:
2290 RETVAL 3667 RETVAL
2291 3668
2292void 3669void
2293throw (Coro::State self, SV *throw = &PL_sv_undef) 3670throw (SV *self, SV *exception = &PL_sv_undef)
2294 PROTOTYPE: $;$ 3671 PROTOTYPE: $;$
2295 CODE: 3672 CODE:
3673{
3674 struct coro *coro = SvSTATE (self);
3675 struct coro *current = SvSTATE_current;
3676 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2296 SvREFCNT_dec (self->throw); 3677 SvREFCNT_dec (*exceptionp);
2297 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3678 SvGETMAGIC (exception);
3679 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3680
3681 api_ready (aTHX_ self);
3682}
2298 3683
2299void 3684void
2300api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3685api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2301 PROTOTYPE: $;$ 3686 PROTOTYPE: $;$
2302 C_ARGS: aTHX_ coro, flags 3687 C_ARGS: aTHX_ coro, flags
2303 3688
2304SV * 3689SV *
2305has_cctx (Coro::State coro) 3690has_cctx (Coro::State coro)
2306 PROTOTYPE: $ 3691 PROTOTYPE: $
2307 CODE: 3692 CODE:
2308 RETVAL = boolSV (!!coro->cctx); 3693 /* maybe manage the running flag differently */
3694 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2309 OUTPUT: 3695 OUTPUT:
2310 RETVAL 3696 RETVAL
2311 3697
2312int 3698int
2313is_traced (Coro::State coro) 3699is_traced (Coro::State coro)
… …
2333 3719
2334void 3720void
2335force_cctx () 3721force_cctx ()
2336 PROTOTYPE: 3722 PROTOTYPE:
2337 CODE: 3723 CODE:
2338 struct coro *coro = SvSTATE (coro_current);
2339 coro->cctx->idle_sp = 0; 3724 cctx_current->idle_sp = 0;
2340 3725
2341void 3726void
2342swap_defsv (Coro::State self) 3727swap_defsv (Coro::State self)
2343 PROTOTYPE: $ 3728 PROTOTYPE: $
2344 ALIAS: 3729 ALIAS:
… …
2352 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3737 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2353 3738
2354 SV *tmp = *src; *src = *dst; *dst = tmp; 3739 SV *tmp = *src; *src = *dst; *dst = tmp;
2355 } 3740 }
2356 3741
3742void
3743cancel (Coro::State self)
3744 CODE:
3745 coro_state_destroy (aTHX_ self);
3746
3747SV *
3748enable_times (int enabled = enable_times)
3749 CODE:
3750{
3751 RETVAL = boolSV (enable_times);
3752
3753 if (enabled != enable_times)
3754 {
3755 enable_times = enabled;
3756
3757 coro_times_update ();
3758 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3759 }
3760}
3761 OUTPUT:
3762 RETVAL
3763
3764void
3765times (Coro::State self)
3766 PPCODE:
3767{
3768 struct coro *current = SvSTATE (coro_current);
3769
3770 if (ecb_expect_false (current == self))
3771 {
3772 coro_times_update ();
3773 coro_times_add (SvSTATE (coro_current));
3774 }
3775
3776 EXTEND (SP, 2);
3777 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3778 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3779
3780 if (ecb_expect_false (current == self))
3781 coro_times_sub (SvSTATE (coro_current));
3782}
3783
3784void
3785swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3786 CODE:
3787{
3788 struct coro *current = SvSTATE_current;
3789
3790 if (current == coro)
3791 SWAP_SVS (current);
3792
3793 if (!coro->swap_sv)
3794 coro->swap_sv = newAV ();
3795
3796 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3797 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3798
3799 if (current == coro)
3800 SWAP_SVS (current);
3801}
3802
3803
2357MODULE = Coro::State PACKAGE = Coro 3804MODULE = Coro::State PACKAGE = Coro
2358 3805
2359BOOT: 3806BOOT:
2360{ 3807{
2361 int i;
2362
2363 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2364 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3808 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2365 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3809 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2366 3810 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2367 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3811 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2368 SvREADONLY_on (coro_current); 3812 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3813 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3814 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3815 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3816
3817 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3818 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3819 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3820 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2369 3821
2370 coro_stash = gv_stashpv ("Coro", TRUE); 3822 coro_stash = gv_stashpv ("Coro", TRUE);
2371 3823
2372 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3824 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2373 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3825 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2374 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3826 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2375 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3827 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2376 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3828 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2377 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3829 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2378
2379 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2380 coro_ready[i] = newAV ();
2381 3830
2382 { 3831 {
2383 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3832 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2384 3833
2385 coroapi.schedule = api_schedule; 3834 coroapi.schedule = api_schedule;
3835 coroapi.schedule_to = api_schedule_to;
2386 coroapi.cede = api_cede; 3836 coroapi.cede = api_cede;
2387 coroapi.cede_notself = api_cede_notself; 3837 coroapi.cede_notself = api_cede_notself;
2388 coroapi.ready = api_ready; 3838 coroapi.ready = api_ready;
2389 coroapi.is_ready = api_is_ready; 3839 coroapi.is_ready = api_is_ready;
2390 coroapi.nready = coro_nready; 3840 coroapi.nready = coro_nready;
2391 coroapi.current = coro_current; 3841 coroapi.current = coro_current;
2392 3842
2393 GCoroAPI = &coroapi; 3843 /*GCoroAPI = &coroapi;*/
2394 sv_setiv (sv, (IV)&coroapi); 3844 sv_setiv (sv, (IV)&coroapi);
2395 SvREADONLY_on (sv); 3845 SvREADONLY_on (sv);
2396 } 3846 }
2397} 3847}
2398 3848
3849SV *
3850async (...)
3851 PROTOTYPE: &@
3852 CODE:
3853 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3854 api_ready (aTHX_ RETVAL);
3855 OUTPUT:
3856 RETVAL
3857
3858void
3859_destroy (Coro::State coro)
3860 CODE:
3861 /* used by the manager thread */
3862 coro_state_destroy (aTHX_ coro);
3863
3864void
3865on_destroy (Coro::State coro, SV *cb)
3866 CODE:
3867 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3868
3869void
3870join (...)
3871 CODE:
3872 CORO_EXECUTE_SLF_XS (slf_init_join);
3873
3874void
3875terminate (...)
3876 CODE:
3877 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3878
3879void
3880cancel (...)
3881 CODE:
3882 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3883
3884int
3885safe_cancel (Coro::State self, ...)
3886 C_ARGS: aTHX_ self, &ST (1), items - 1
3887
2399void 3888void
2400schedule (...) 3889schedule (...)
2401 CODE: 3890 CODE:
2402 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), items); 3891 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3892
3893void
3894schedule_to (...)
3895 CODE:
3896 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3897
3898void
3899cede_to (...)
3900 CODE:
3901 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2403 3902
2404void 3903void
2405cede (...) 3904cede (...)
2406 CODE: 3905 CODE:
2407 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), items); 3906 CORO_EXECUTE_SLF_XS (slf_init_cede);
2408 3907
2409void 3908void
2410cede_notself (...) 3909cede_notself (...)
2411 CODE: 3910 CODE:
2412 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), items); 3911 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2413 3912
2414void 3913void
2415_set_current (SV *current) 3914_set_current (SV *current)
2416 PROTOTYPE: $ 3915 PROTOTYPE: $
2417 CODE: 3916 CODE:
… …
2420 3919
2421void 3920void
2422_set_readyhook (SV *hook) 3921_set_readyhook (SV *hook)
2423 PROTOTYPE: $ 3922 PROTOTYPE: $
2424 CODE: 3923 CODE:
2425 LOCK;
2426 SvREFCNT_dec (coro_readyhook); 3924 SvREFCNT_dec (coro_readyhook);
3925 SvGETMAGIC (hook);
3926 if (SvOK (hook))
3927 {
2427 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3928 coro_readyhook = newSVsv (hook);
2428 UNLOCK; 3929 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3930 }
3931 else
3932 {
3933 coro_readyhook = 0;
3934 CORO_READYHOOK = 0;
3935 }
2429 3936
2430int 3937int
2431prio (Coro::State coro, int newprio = 0) 3938prio (Coro::State coro, int newprio = 0)
2432 PROTOTYPE: $;$ 3939 PROTOTYPE: $;$
2433 ALIAS: 3940 ALIAS:
… …
2439 if (items > 1) 3946 if (items > 1)
2440 { 3947 {
2441 if (ix) 3948 if (ix)
2442 newprio = coro->prio - newprio; 3949 newprio = coro->prio - newprio;
2443 3950
2444 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3951 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2445 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3952 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2446 3953
2447 coro->prio = newprio; 3954 coro->prio = newprio;
2448 } 3955 }
2449} 3956}
2450 OUTPUT: 3957 OUTPUT:
… …
2464 CODE: 3971 CODE:
2465 RETVAL = coro_nready; 3972 RETVAL = coro_nready;
2466 OUTPUT: 3973 OUTPUT:
2467 RETVAL 3974 RETVAL
2468 3975
2469# for async_pool speedup
2470void 3976void
2471_pool_1 (SV *cb) 3977suspend (Coro::State self)
3978 PROTOTYPE: $
2472 CODE: 3979 CODE:
2473{ 3980 self->flags |= CF_SUSPENDED;
2474 struct coro *coro = SvSTATE (coro_current);
2475 HV *hv = (HV *)SvRV (coro_current);
2476 AV *defav = GvAV (PL_defgv);
2477 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2478 AV *invoke_av;
2479 int i, len;
2480 3981
2481 if (!invoke) 3982void
3983resume (Coro::State self)
3984 PROTOTYPE: $
3985 CODE:
3986 self->flags &= ~CF_SUSPENDED;
3987
3988void
3989_pool_handler (...)
3990 CODE:
3991 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3992
3993void
3994async_pool (SV *cv, ...)
3995 PROTOTYPE: &@
3996 PPCODE:
3997{
3998 HV *hv = (HV *)av_pop (av_async_pool);
3999 AV *av = newAV ();
4000 SV *cb = ST (0);
4001 int i;
4002
4003 av_extend (av, items - 2);
4004 for (i = 1; i < items; ++i)
4005 av_push (av, SvREFCNT_inc_NN (ST (i)));
4006
4007 if ((SV *)hv == &PL_sv_undef)
2482 { 4008 {
2483 SV *old = PL_diehook; 4009 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2484 PL_diehook = 0; 4010 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2485 SvREFCNT_dec (old); 4011 SvREFCNT_dec (sv);
2486 croak ("\3async_pool terminate\2\n");
2487 } 4012 }
2488 4013
2489 SvREFCNT_dec (coro->saved_deffh);
2490 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2491
2492 hv_store (hv, "desc", sizeof ("desc") - 1,
2493 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2494
2495 invoke_av = (AV *)SvRV (invoke);
2496 len = av_len (invoke_av);
2497
2498 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2499
2500 if (len > 0)
2501 { 4014 {
2502 av_fill (defav, len - 1); 4015 struct coro *coro = SvSTATE_hv (hv);
2503 for (i = 0; i < len; ++i) 4016
2504 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4017 assert (!coro->invoke_cb);
4018 assert (!coro->invoke_av);
4019 coro->invoke_cb = SvREFCNT_inc (cb);
4020 coro->invoke_av = av;
2505 } 4021 }
2506}
2507 4022
2508void 4023 api_ready (aTHX_ (SV *)hv);
2509_pool_2 (SV *cb) 4024
4025 if (GIMME_V != G_VOID)
4026 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4027 else
4028 SvREFCNT_dec (hv);
4029}
4030
4031SV *
4032rouse_cb ()
4033 PROTOTYPE:
2510 CODE: 4034 CODE:
2511{ 4035 RETVAL = coro_new_rouse_cb (aTHX);
2512 struct coro *coro = SvSTATE (coro_current);
2513
2514 sv_setsv (cb, &PL_sv_undef);
2515
2516 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2517 coro->saved_deffh = 0;
2518
2519 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2520 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2521 {
2522 SV *old = PL_diehook;
2523 PL_diehook = 0;
2524 SvREFCNT_dec (old);
2525 croak ("\3async_pool terminate\2\n");
2526 }
2527
2528 av_clear (GvAV (PL_defgv));
2529 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2530 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2531
2532 coro->prio = 0;
2533
2534 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2535 api_trace (aTHX_ coro_current, 0);
2536
2537 av_push (av_async_pool, newSVsv (coro_current));
2538}
2539
2540#if 0
2541
2542void
2543_generator_call (...)
2544 PROTOTYPE: @
2545 PPCODE:
2546 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2547 xxxx
2548 abort ();
2549
2550SV *
2551gensub (SV *sub, ...)
2552 PROTOTYPE: &;@
2553 CODE:
2554{
2555 struct coro *coro;
2556 MAGIC *mg;
2557 CV *xcv;
2558 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2559 int i;
2560
2561 CvGV (ncv) = CvGV (cv);
2562 CvFILE (ncv) = CvFILE (cv);
2563
2564 Newz (0, coro, 1, struct coro);
2565 coro->args = newAV ();
2566 coro->flags = CF_NEW;
2567
2568 av_extend (coro->args, items - 1);
2569 for (i = 1; i < items; i++)
2570 av_push (coro->args, newSVsv (ST (i)));
2571
2572 CvISXSUB_on (ncv);
2573 CvXSUBANY (ncv).any_ptr = (void *)coro;
2574
2575 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2576
2577 CvXSUB (ncv) = CvXSUB (xcv);
2578 CvANON_on (ncv);
2579
2580 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2581 RETVAL = newRV_noinc ((SV *)ncv);
2582}
2583 OUTPUT: 4036 OUTPUT:
2584 RETVAL 4037 RETVAL
2585 4038
2586#endif
2587
2588
2589MODULE = Coro::State PACKAGE = Coro::AIO
2590
2591void 4039void
2592_get_state (SV *self) 4040rouse_wait (...)
2593 PROTOTYPE: $ 4041 PROTOTYPE: ;$
2594 PPCODE: 4042 PPCODE:
2595{ 4043 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2596 AV *defav = GvAV (PL_defgv);
2597 AV *av = newAV ();
2598 int i;
2599 SV *data_sv = newSV (sizeof (struct io_state));
2600 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2601 SvCUR_set (data_sv, sizeof (struct io_state));
2602 SvPOK_only (data_sv);
2603
2604 data->errorno = errno;
2605 data->laststype = PL_laststype;
2606 data->laststatval = PL_laststatval;
2607 data->statcache = PL_statcache;
2608
2609 av_extend (av, AvFILLp (defav) + 1 + 1);
2610
2611 for (i = 0; i <= AvFILLp (defav); ++i)
2612 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2613
2614 av_push (av, data_sv);
2615
2616 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2617
2618 api_ready (aTHX_ self);
2619}
2620 4044
2621void 4045void
2622_set_state (SV *state) 4046on_enter (SV *block)
4047 ALIAS:
4048 on_leave = 1
2623 PROTOTYPE: $ 4049 PROTOTYPE: &
2624 PPCODE:
2625{
2626 AV *av = (AV *)SvRV (state);
2627 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2628 int i;
2629
2630 errno = data->errorno;
2631 PL_laststype = data->laststype;
2632 PL_laststatval = data->laststatval;
2633 PL_statcache = data->statcache;
2634
2635 EXTEND (SP, AvFILLp (av));
2636 for (i = 0; i < AvFILLp (av); ++i)
2637 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2638}
2639
2640
2641MODULE = Coro::State PACKAGE = Coro::AnyEvent
2642
2643BOOT:
2644 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2645
2646SV *
2647_schedule (...)
2648 CODE: 4050 CODE:
2649{ 4051{
2650 static int incede; 4052 struct coro *coro = SvSTATE_current;
4053 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2651 4054
2652 api_cede_notself (aTHX); 4055 block = s_get_cv_croak (block);
2653 4056
2654 ++incede; 4057 if (!*avp)
2655 while (coro_nready >= incede && api_cede (aTHX)) 4058 *avp = newAV ();
2656 ;
2657 4059
2658 sv_setsv (sv_activity, &PL_sv_undef); 4060 av_push (*avp, SvREFCNT_inc (block));
2659 if (coro_nready >= incede)
2660 {
2661 PUSHMARK (SP);
2662 PUTBACK;
2663 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2664 SPAGAIN;
2665 }
2666 4061
2667 --incede; 4062 if (!ix)
4063 on_enterleave_call (aTHX_ block);
4064
4065 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4066 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4067 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2668} 4068}
2669 4069
2670 4070
2671MODULE = Coro::State PACKAGE = PerlIO::cede 4071MODULE = Coro::State PACKAGE = PerlIO::cede
2672 4072
2673BOOT: 4073BOOT:
2674 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4074 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2675 4075
4076
2676MODULE = Coro::State PACKAGE = Coro::Semaphore 4077MODULE = Coro::State PACKAGE = Coro::Semaphore
2677 4078
2678SV * 4079SV *
2679new (SV *klass, SV *count_ = 0) 4080new (SV *klass, SV *count = 0)
2680 CODE: 4081 CODE:
2681{ 4082{
2682 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4083 int semcnt = 1;
2683 AV *av = newAV (); 4084
2684 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4085 if (count)
2685 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4086 {
4087 SvGETMAGIC (count);
4088
4089 if (SvOK (count))
4090 semcnt = SvIV (count);
4091 }
4092
4093 RETVAL = sv_bless (
4094 coro_waitarray_new (aTHX_ semcnt),
4095 GvSTASH (CvGV (cv))
4096 );
2686} 4097}
4098 OUTPUT:
4099 RETVAL
4100
4101# helper for Coro::Channel and others
4102SV *
4103_alloc (int count)
4104 CODE:
4105 RETVAL = coro_waitarray_new (aTHX_ count);
2687 OUTPUT: 4106 OUTPUT:
2688 RETVAL 4107 RETVAL
2689 4108
2690SV * 4109SV *
2691count (SV *self) 4110count (SV *self)
… …
2697void 4116void
2698up (SV *self, int adjust = 1) 4117up (SV *self, int adjust = 1)
2699 ALIAS: 4118 ALIAS:
2700 adjust = 1 4119 adjust = 1
2701 CODE: 4120 CODE:
2702{ 4121 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2703 AV *av = (AV *)SvRV (self);
2704 SV *count_sv = AvARRAY (av)[0];
2705 IV count = SvIVX (count_sv);
2706
2707 count += ix ? adjust : 1;
2708 SvIVX (count_sv) = count;
2709
2710 /* now wake up as many waiters as possible */
2711 while (count > 0 && AvFILLp (av) >= count)
2712 {
2713 SV *cb;
2714
2715 /* swap first two elements so we can shift a waiter */
2716 AvARRAY (av)[0] = AvARRAY (av)[1];
2717 AvARRAY (av)[1] = count_sv;
2718 cb = av_shift (av);
2719
2720 if (SvOBJECT (cb))
2721 api_ready (cb);
2722 else
2723 croak ("callbacks not yet supported");
2724
2725 SvREFCNT_dec (cb);
2726 }
2727}
2728 4122
2729void 4123void
2730down (SV *self) 4124down (...)
2731 CODE: 4125 CODE:
2732 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), items); 4126 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4127
4128void
4129wait (...)
4130 CODE:
4131 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2733 4132
2734void 4133void
2735try (SV *self) 4134try (SV *self)
2736 PPCODE: 4135 PPCODE:
2737{ 4136{
… …
2749 XSRETURN_NO; 4148 XSRETURN_NO;
2750} 4149}
2751 4150
2752void 4151void
2753waiters (SV *self) 4152waiters (SV *self)
2754 CODE: 4153 PPCODE:
2755{ 4154{
2756 AV *av = (AV *)SvRV (self); 4155 AV *av = (AV *)SvRV (self);
4156 int wcount = AvFILLp (av) + 1 - 1;
2757 4157
2758 if (GIMME_V == G_SCALAR) 4158 if (GIMME_V == G_SCALAR)
2759 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4159 XPUSHs (sv_2mortal (newSViv (wcount)));
2760 else 4160 else
2761 { 4161 {
2762 int i; 4162 int i;
2763 EXTEND (SP, AvFILLp (av) + 1 - 1); 4163 EXTEND (SP, wcount);
2764 for (i = 1; i <= AvFILLp (av); ++i) 4164 for (i = 1; i <= wcount; ++i)
2765 PUSHs (newSVsv (AvARRAY (av)[i])); 4165 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2766 } 4166 }
2767} 4167}
2768 4168
4169MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4170
4171void
4172_may_delete (SV *sem, int count, unsigned int extra_refs)
4173 PPCODE:
4174{
4175 AV *av = (AV *)SvRV (sem);
4176
4177 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4178 && AvFILLp (av) == 0 /* no waiters, just count */
4179 && SvIV (AvARRAY (av)[0]) == count)
4180 XSRETURN_YES;
4181
4182 XSRETURN_NO;
4183}
4184
4185MODULE = Coro::State PACKAGE = Coro::Signal
4186
4187SV *
4188new (SV *klass)
4189 CODE:
4190 RETVAL = sv_bless (
4191 coro_waitarray_new (aTHX_ 0),
4192 GvSTASH (CvGV (cv))
4193 );
4194 OUTPUT:
4195 RETVAL
4196
4197void
4198wait (...)
4199 CODE:
4200 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4201
4202void
4203broadcast (SV *self)
4204 CODE:
4205{
4206 AV *av = (AV *)SvRV (self);
4207 coro_signal_wake (aTHX_ av, AvFILLp (av));
4208}
4209
4210void
4211send (SV *self)
4212 CODE:
4213{
4214 AV *av = (AV *)SvRV (self);
4215
4216 if (AvFILLp (av))
4217 coro_signal_wake (aTHX_ av, 1);
4218 else
4219 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4220}
4221
4222IV
4223awaited (SV *self)
4224 CODE:
4225 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4226 OUTPUT:
4227 RETVAL
4228
4229
4230MODULE = Coro::State PACKAGE = Coro::AnyEvent
4231
4232BOOT:
4233 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4234
4235void
4236_schedule (...)
4237 CODE:
4238{
4239 static int incede;
4240
4241 api_cede_notself (aTHX);
4242
4243 ++incede;
4244 while (coro_nready >= incede && api_cede (aTHX))
4245 ;
4246
4247 sv_setsv (sv_activity, &PL_sv_undef);
4248 if (coro_nready >= incede)
4249 {
4250 PUSHMARK (SP);
4251 PUTBACK;
4252 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4253 }
4254
4255 --incede;
4256}
4257
4258
4259MODULE = Coro::State PACKAGE = Coro::AIO
4260
4261void
4262_register (char *target, char *proto, SV *req)
4263 CODE:
4264{
4265 SV *req_cv = s_get_cv_croak (req);
4266 /* newXSproto doesn't return the CV on 5.8 */
4267 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4268 sv_setpv ((SV *)slf_cv, proto);
4269 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4270}
4271
4272MODULE = Coro::State PACKAGE = Coro::Select
4273
4274void
4275patch_pp_sselect ()
4276 CODE:
4277 if (!coro_old_pp_sselect)
4278 {
4279 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4280 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4281 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4282 }
4283
4284void
4285unpatch_pp_sselect ()
4286 CODE:
4287 if (coro_old_pp_sselect)
4288 {
4289 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4290 coro_old_pp_sselect = 0;
4291 }
4292

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines