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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.375 by root, Fri Oct 2 19:58:02 2009 UTC

1#define NDEBUG 1
2
1#include "libcoro/coro.c" 3#include "libcoro/coro.c"
2 4
3#define PERL_NO_GET_CONTEXT 5#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 6#define PERL_EXT
5 7
6#include "EXTERN.h" 8#include "EXTERN.h"
7#include "perl.h" 9#include "perl.h"
8#include "XSUB.h" 10#include "XSUB.h"
9#include "perliol.h" 11#include "perliol.h"
10 12
11#include "patchlevel.h" 13#include "schmorp.h"
12 14
13#include <stdio.h> 15#include <stdio.h>
14#include <errno.h> 16#include <errno.h>
15#include <assert.h> 17#include <assert.h>
18
19#ifndef SVs_PADSTALE
20# define SVs_PADSTALE 0
21#endif
16 22
17#ifdef WIN32 23#ifdef WIN32
18# undef setjmp 24# undef setjmp
19# undef longjmp 25# undef longjmp
20# undef _exit 26# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 27# define setjmp _setjmp /* deep magic */
22#else 28#else
23# include <inttypes.h> /* most portable stdint.h */ 29# include <inttypes.h> /* most portable stdint.h */
24#endif 30#endif
25 31
26#ifdef HAVE_MMAP 32#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 52# define BOOT_PAGESIZE (void)0
47#endif 53#endif
48 54
49#if CORO_USE_VALGRIND 55#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 56# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 57#endif
55 58
56/* the maximum number of idle cctx that will be pooled */ 59/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 60static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108 61
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 62#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 63# undef CORO_STACKGUARD
111#endif 64#endif
112 65
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 72# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 73#endif
121 74
122/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 76 * portable way as possible. */
77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
79# define STACKLEVEL __builtin_frame_address (0)
80#else
124#define dSTACKLEVEL volatile char stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 82# define STACKLEVEL ((void *)&stacklevel)
83#endif
126 84
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
128 86
129#if __GNUC__ >= 3 87#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 88# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 89# define expect(expr,value) __builtin_expect ((expr), (value))
90# define INLINE static inline
133#else 91#else
134# define attribute(x) 92# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 93# define expect(expr,value) (expr)
94# define INLINE static
137#endif 95#endif
138 96
139#define expect_false(expr) expect ((expr) != 0, 0) 97#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 98#define expect_true(expr) expect ((expr) != 0, 1)
141 99
142#define NOINLINE attribute ((noinline)) 100#define NOINLINE attribute ((noinline))
143 101
144#include "CoroAPI.h" 102#include "CoroAPI.h"
103#define GCoroAPI (&coroapi) /* very sneaky */
145 104
146#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
147static perl_mutex coro_mutex; 106# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 107static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 108# endif
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 109#endif
154 110
155/* helper storage struct for Coro::AIO */ 111#ifdef __linux
156struct io_state 112# include <time.h> /* for timespec */
157{ 113# include <syscall.h> /* for SYS_* */
158 AV *res; 114# ifdef SYS_clock_gettime
159 int errorno; 115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160 I32 laststype; 116# define CORO_CLOCK_MONOTONIC 1
161 int laststatval; 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
162 Stat_t statcache; 118# endif
163}; 119#endif
164 120
165static double (*nvtime)(); /* so why doesn't it take void? */ 121static double (*nvtime)(); /* so why doesn't it take void? */
122static void (*u2time)(pTHX_ UV ret[2]);
166 123
124/* we hijack an hopefully unused CV flag for our purposes */
125#define CVf_SLF 0x4000
126static OP *pp_slf (pTHX);
127
128static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 129static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 130static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 131static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 132static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 133static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 134static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 135
136static AV *av_destroy; /* destruction queue */
137static SV *sv_manager; /* the manager coro */
138static SV *sv_idle; /* $Coro::idle */
139
174static GV *irsgv; /* $/ */ 140static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 141static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 142static SV *rv_diehook;
177static SV *rv_warnhook; 143static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 144static HV *hv_sig; /* %SIG */
179 145
180/* async_pool helper stuff */ 146/* async_pool helper stuff */
181static SV *sv_pool_rss; 147static SV *sv_pool_rss;
182static SV *sv_pool_size; 148static SV *sv_pool_size;
149static SV *sv_async_pool_idle; /* description string */
183static AV *av_async_pool; 150static AV *av_async_pool; /* idle pool */
151static SV *sv_Coro; /* class string */
152static CV *cv_pool_handler;
184 153
185/* Coro::AnyEvent */ 154/* Coro::AnyEvent */
186static SV *sv_activity; 155static SV *sv_activity;
156
157/* enable processtime/realtime profiling */
158static char enable_times;
159typedef U32 coro_ts[2];
160static coro_ts time_real, time_cpu;
161static char times_valid;
187 162
188static struct coro_cctx *cctx_first; 163static struct coro_cctx *cctx_first;
189static int cctx_count, cctx_idle; 164static int cctx_count, cctx_idle;
190 165
191enum { 166enum {
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 173};
199 174
200/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 176typedef struct coro_cctx
177{
202 struct coro_cctx *next; 178 struct coro_cctx *next;
203 179
204 /* the stack */ 180 /* the stack */
205 void *sptr; 181 void *sptr;
206 size_t ssize; 182 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 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, TODO: remove once stable */
211 JMPENV *top_env; 187 JMPENV *top_env;
212 coro_context cctx; 188 coro_context cctx;
213 189
190 U32 gen;
214#if CORO_USE_VALGRIND 191#if CORO_USE_VALGRIND
215 int valgrind_id; 192 int valgrind_id;
216#endif 193#endif
217 unsigned char flags; 194 unsigned char flags;
218} coro_cctx; 195} coro_cctx;
219 196
197coro_cctx *cctx_current; /* the currently running cctx */
198
199/*****************************************************************************/
200
220enum { 201enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 202 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 203 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 204 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 205 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
206 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 210typedef struct
211{
229 SV *defsv; 212 SV *defsv;
230 AV *defav; 213 AV *defav;
231 SV *errsv; 214 SV *errsv;
232 SV *irsgv; 215 SV *irsgv;
216 HV *hinthv;
233#define VAR(name,type) type name; 217#define VAR(name,type) type name;
234# include "state.h" 218# include "state.h"
235#undef VAR 219#undef VAR
236} perl_slots; 220} perl_slots;
237 221
238#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))
239 223
240/* this is a structure representing a perl-level coroutine */ 224/* this is a structure representing a perl-level coroutine */
241struct coro { 225struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 226 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 227 coro_cctx *cctx;
244 228
245 /* process data */ 229 /* ready queue */
230 struct coro *next_ready;
231
232 /* state data */
233 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 234 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 235 perl_slots *slot; /* basically the saved sp */
248 236
237 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 238 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 239 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 240 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 241 HV *hv; /* the perl hash associated with this coro, if any */
242 void (*on_destroy)(pTHX_ struct coro *coro);
253 243
254 /* statistics */ 244 /* statistics */
255 int usecount; /* number of transfers to this coro */ 245 int usecount; /* number of transfers to this coro */
256 246
257 /* coro process data */ 247 /* coro process data */
258 int prio; 248 int prio;
259 SV *throw; /* exception to be thrown */ 249 SV *except; /* exception to be thrown */
250 SV *rouse_cb;
260 251
261 /* async_pool */ 252 /* async_pool */
262 SV *saved_deffh; 253 SV *saved_deffh;
254 SV *invoke_cb;
255 AV *invoke_av;
256
257 /* on_enter/on_leave */
258 AV *on_enter;
259 AV *on_leave;
260
261 /* swap_sv */
262 AV *swap_sv;
263
264 /* times */
265 coro_ts t_cpu, t_real;
263 266
264 /* linked list */ 267 /* linked list */
265 struct coro *next, *prev; 268 struct coro *next, *prev;
266}; 269};
267 270
268typedef struct coro *Coro__State; 271typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 272typedef struct coro *Coro__State_or_hashref;
270 273
274/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */
278
271/** Coro ********************************************************************/ 279/** Coro ********************************************************************/
272 280
273#define PRIO_MAX 3 281#define CORO_PRIO_MAX 3
274#define PRIO_HIGH 1 282#define CORO_PRIO_HIGH 1
275#define PRIO_NORMAL 0 283#define CORO_PRIO_NORMAL 0
276#define PRIO_LOW -1 284#define CORO_PRIO_LOW -1
277#define PRIO_IDLE -3 285#define CORO_PRIO_IDLE -3
278#define PRIO_MIN -4 286#define CORO_PRIO_MIN -4
279 287
280/* for Coro.pm */ 288/* for Coro.pm */
281static SV *coro_current; 289static SV *coro_current;
282static SV *coro_readyhook; 290static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 291static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static int coro_nready; 292static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
295
296/** Coro::Select ************************************************************/
297
298static OP *(*coro_old_pp_sselect) (pTHX);
299static SV *coro_select_select;
300
301/* horrible hack, but if it works... */
302static OP *
303coro_pp_sselect (pTHX)
304{
305 dSP;
306 PUSHMARK (SP - 4); /* fake argument list */
307 XPUSHs (coro_select_select);
308 PUTBACK;
309
310 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
311 PL_op->op_flags |= OPf_STACKED;
312 PL_op->op_private = 0;
313 return PL_ppaddr [OP_ENTERSUB](aTHX);
314}
286 315
287/** lowlevel stuff **********************************************************/ 316/** lowlevel stuff **********************************************************/
288 317
289static SV * 318static SV *
290coro_get_sv (pTHX_ const char *name, int create) 319coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 343 get_hv (name, create);
315#endif 344#endif
316 return get_hv (name, create); 345 return get_hv (name, create);
317} 346}
318 347
348INLINE void
349coro_times_update ()
350{
351#ifdef coro_clock_gettime
352 struct timespec ts;
353
354 ts.tv_sec = ts.tv_nsec = 0;
355 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
356 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
357
358 ts.tv_sec = ts.tv_nsec = 0;
359 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
360 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
361#else
362 dTHX;
363 UV tv[2];
364
365 u2time (aTHX_ tv);
366 time_real [0] = tv [0];
367 time_real [1] = tv [1] * 1000;
368#endif
369}
370
371INLINE void
372coro_times_add (struct coro *c)
373{
374 c->t_real [1] += time_real [1];
375 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
376 c->t_real [0] += time_real [0];
377
378 c->t_cpu [1] += time_cpu [1];
379 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
380 c->t_cpu [0] += time_cpu [0];
381}
382
383INLINE void
384coro_times_sub (struct coro *c)
385{
386 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
387 c->t_real [1] -= time_real [1];
388 c->t_real [0] -= time_real [0];
389
390 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
391 c->t_cpu [1] -= time_cpu [1];
392 c->t_cpu [0] -= time_cpu [0];
393}
394
395/*****************************************************************************/
396/* magic glue */
397
398#define CORO_MAGIC_type_cv 26
399#define CORO_MAGIC_type_state PERL_MAGIC_ext
400
401#define CORO_MAGIC_NN(sv, type) \
402 (expect_true (SvMAGIC (sv)->mg_type == type) \
403 ? SvMAGIC (sv) \
404 : mg_find (sv, type))
405
406#define CORO_MAGIC(sv, type) \
407 (expect_true (SvMAGIC (sv)) \
408 ? CORO_MAGIC_NN (sv, type) \
409 : 0)
410
411#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
412#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
413
414INLINE struct coro *
415SvSTATE_ (pTHX_ SV *coro)
416{
417 HV *stash;
418 MAGIC *mg;
419
420 if (SvROK (coro))
421 coro = SvRV (coro);
422
423 if (expect_false (SvTYPE (coro) != SVt_PVHV))
424 croak ("Coro::State object required");
425
426 stash = SvSTASH (coro);
427 if (expect_false (stash != coro_stash && stash != coro_state_stash))
428 {
429 /* very slow, but rare, check */
430 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
431 croak ("Coro::State object required");
432 }
433
434 mg = CORO_MAGIC_state (coro);
435 return (struct coro *)mg->mg_ptr;
436}
437
438#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
439
440/* faster than SvSTATE, but expects a coroutine hv */
441#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
442#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
443
444/*****************************************************************************/
445/* padlist management and caching */
446
319static AV * 447static AV *
320coro_clone_padlist (pTHX_ CV *cv) 448coro_derive_padlist (pTHX_ CV *cv)
321{ 449{
322 AV *padlist = CvPADLIST (cv); 450 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 451 AV *newpadlist, *newpad;
324 452
325 newpadlist = newAV (); 453 newpadlist = newAV ();
… …
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 458 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
331#endif 459#endif
332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 460 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
333 --AvFILLp (padlist); 461 --AvFILLp (padlist);
334 462
335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 463 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
336 av_store (newpadlist, 1, (SV *)newpad); 464 av_store (newpadlist, 1, (SV *)newpad);
337 465
338 return newpadlist; 466 return newpadlist;
339} 467}
340 468
341static void 469static void
342free_padlist (pTHX_ AV *padlist) 470free_padlist (pTHX_ AV *padlist)
343{ 471{
344 /* may be during global destruction */ 472 /* may be during global destruction */
345 if (SvREFCNT (padlist)) 473 if (!IN_DESTRUCT)
346 { 474 {
347 I32 i = AvFILLp (padlist); 475 I32 i = AvFILLp (padlist);
348 while (i >= 0) 476
477 while (i > 0) /* special-case index 0 */
349 { 478 {
350 SV **svp = av_fetch (padlist, i--, FALSE); 479 /* we try to be extra-careful here */
351 if (svp) 480 AV *av = (AV *)AvARRAY (padlist)[i--];
352 { 481 I32 j = AvFILLp (av);
353 SV *sv; 482
354 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 483 while (j >= 0)
484 SvREFCNT_dec (AvARRAY (av)[j--]);
485
486 AvFILLp (av) = -1;
355 SvREFCNT_dec (sv); 487 SvREFCNT_dec (av);
356
357 SvREFCNT_dec (*svp);
358 }
359 } 488 }
360 489
490 SvREFCNT_dec (AvARRAY (padlist)[0]);
491
492 AvFILLp (padlist) = -1;
361 SvREFCNT_dec ((SV*)padlist); 493 SvREFCNT_dec ((SV*)padlist);
362 } 494 }
363} 495}
364 496
365static int 497static int
366coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 498coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
367{ 499{
368 AV *padlist; 500 AV *padlist;
369 AV *av = (AV *)mg->mg_obj; 501 AV *av = (AV *)mg->mg_obj;
502
503 /* perl manages to free our internal AV and _then_ call us */
504 if (IN_DESTRUCT)
505 return 0;
370 506
371 /* casting is fun. */ 507 /* casting is fun. */
372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 508 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
373 free_padlist (aTHX_ padlist); 509 free_padlist (aTHX_ padlist);
374 510
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 511 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 512
377 return 0; 513 return 0;
378} 514}
379
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 515
383static MGVTBL coro_cv_vtbl = { 516static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 517 0, 0, 0, 0,
385 coro_cv_free 518 coro_cv_free
386}; 519};
387
388#define CORO_MAGIC(sv,type) \
389 SvMAGIC (sv) \
390 ? SvMAGIC (sv)->mg_type == type \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
423 520
424/* the next two functions merely cache the padlists */ 521/* the next two functions merely cache the padlists */
425static void 522static void
426get_padlist (pTHX_ CV *cv) 523get_padlist (pTHX_ CV *cv)
427{ 524{
… …
433 else 530 else
434 { 531 {
435#if CORO_PREFER_PERL_FUNCTIONS 532#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 533 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 534 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 535 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 536 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 537 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 538 SvREFCNT_dec (cp);
442#else 539#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 540 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 541#endif
445 } 542 }
446} 543}
447 544
448static void 545static void
… …
455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 552 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
456 553
457 av = (AV *)mg->mg_obj; 554 av = (AV *)mg->mg_obj;
458 555
459 if (expect_false (AvFILLp (av) >= AvMAX (av))) 556 if (expect_false (AvFILLp (av) >= AvMAX (av)))
460 av_extend (av, AvMAX (av) + 1); 557 av_extend (av, AvFILLp (av) + 1);
461 558
462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 559 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
463} 560}
464 561
465/** load & save, init *******************************************************/ 562/** load & save, init *******************************************************/
563
564/* swap sv heads, at least logically */
565static void
566swap_svs (pTHX_ Coro__State c)
567{
568 int i;
569
570 for (i = 0; i <= AvFILLp (c->swap_sv); )
571 {
572 SV *a = AvARRAY (c->swap_sv)[i++];
573 SV *b = AvARRAY (c->swap_sv)[i++];
574
575 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
576 SV tmp;
577
578 /* swap sv_any */
579 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
580
581 /* swap sv_flags */
582 SvFLAGS (&tmp) = SvFLAGS (a);
583 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
584 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
585
586#if PERL_VERSION_ATLEAST (5,10,0)
587 /* perl 5.10 complicates this _quite_ a bit, but it also is
588 * is much faster, so no quarrels here. alternatively, we could
589 * sv_upgrade to avoid this.
590 */
591 {
592 /* swap sv_u */
593 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
594
595 /* if SvANY points to the head, we need to adjust the pointers,
596 * as the pointer for a still points to b, and maybe vice versa.
597 */
598 #define svany_in_head(type) \
599 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
600
601 if (svany_in_head (SvTYPE (a)))
602 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
603
604 if (svany_in_head (SvTYPE (b)))
605 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
606 }
607#endif
608 }
609}
610
611#define SWAP_SVS(coro) \
612 if (expect_false ((coro)->swap_sv)) \
613 swap_svs (aTHX_ (coro))
614
615static void
616on_enterleave_call (pTHX_ SV *cb);
466 617
467static void 618static void
468load_perl (pTHX_ Coro__State c) 619load_perl (pTHX_ Coro__State c)
469{ 620{
470 perl_slots *slot = c->slot; 621 perl_slots *slot = c->slot;
471 c->slot = 0; 622 c->slot = 0;
472 623
473 PL_mainstack = c->mainstack; 624 PL_mainstack = c->mainstack;
474 625
475 GvSV (PL_defgv) = slot->defsv; 626 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav; 627 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv; 628 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv; 629 GvSV (irsgv) = slot->irsgv;
630 GvHV (PL_hintgv) = slot->hinthv;
479 631
480 #define VAR(name,type) PL_ ## name = slot->name; 632 #define VAR(name,type) PL_ ## name = slot->name;
481 # include "state.h" 633 # include "state.h"
482 #undef VAR 634 #undef VAR
483 635
… …
494 CvPADLIST (cv) = (AV *)POPs; 646 CvPADLIST (cv) = (AV *)POPs;
495 } 647 }
496 648
497 PUTBACK; 649 PUTBACK;
498 } 650 }
651
652 slf_frame = c->slf_frame;
653 CORO_THROW = c->except;
654
655 if (expect_false (enable_times))
656 {
657 if (expect_false (!times_valid))
658 coro_times_update ();
659
660 coro_times_sub (c);
661 }
662
663 if (expect_false (c->on_enter))
664 {
665 int i;
666
667 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
668 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
669 }
670
671 SWAP_SVS (c);
499} 672}
500 673
501static void 674static void
502save_perl (pTHX_ Coro__State c) 675save_perl (pTHX_ Coro__State c)
503{ 676{
677 SWAP_SVS (c);
678
679 if (expect_false (c->on_leave))
680 {
681 int i;
682
683 for (i = AvFILLp (c->on_leave); i >= 0; --i)
684 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
685 }
686
687 times_valid = 0;
688
689 if (expect_false (enable_times))
690 {
691 coro_times_update (); times_valid = 1;
692 coro_times_add (c);
693 }
694
695 c->except = CORO_THROW;
696 c->slf_frame = slf_frame;
697
504 { 698 {
505 dSP; 699 dSP;
506 I32 cxix = cxstack_ix; 700 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 701 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 702 PERL_SI *top_si = PL_curstackinfo;
… …
518 { 712 {
519 while (expect_true (cxix >= 0)) 713 while (expect_true (cxix >= 0))
520 { 714 {
521 PERL_CONTEXT *cx = &ccstk[cxix--]; 715 PERL_CONTEXT *cx = &ccstk[cxix--];
522 716
523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 717 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
524 { 718 {
525 CV *cv = cx->blk_sub.cv; 719 CV *cv = cx->blk_sub.cv;
526 720
527 if (expect_true (CvDEPTH (cv))) 721 if (expect_true (CvDEPTH (cv)))
528 { 722 {
529 EXTEND (SP, 3);
530 PUSHs ((SV *)CvPADLIST (cv)); 723 PUSHs ((SV *)CvPADLIST (cv));
531 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 724 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
532 PUSHs ((SV *)cv); 725 PUSHs ((SV *)cv);
533 726
534 CvDEPTH (cv) = 0; 727 CvDEPTH (cv) = 0;
… …
552 /* we manually unroll here, as usually 2 slots is enough */ 745 /* we manually unroll here, as usually 2 slots is enough */
553 if (SLOT_COUNT >= 1) CXINC; 746 if (SLOT_COUNT >= 1) CXINC;
554 if (SLOT_COUNT >= 2) CXINC; 747 if (SLOT_COUNT >= 2) CXINC;
555 if (SLOT_COUNT >= 3) CXINC; 748 if (SLOT_COUNT >= 3) CXINC;
556 { 749 {
557 int i; 750 unsigned int i;
558 for (i = 3; i < SLOT_COUNT; ++i) 751 for (i = 3; i < SLOT_COUNT; ++i)
559 CXINC; 752 CXINC;
560 } 753 }
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 754 cxstack_ix -= SLOT_COUNT; /* undo allocation */
562 755
563 c->mainstack = PL_mainstack; 756 c->mainstack = PL_mainstack;
564 757
565 { 758 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 759 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 760
568 slot->defav = GvAV (PL_defgv); 761 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV; 762 slot->defsv = DEFSV;
570 slot->errsv = ERRSV; 763 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv); 764 slot->irsgv = GvSV (irsgv);
765 slot->hinthv = GvHV (PL_hintgv);
572 766
573 #define VAR(name,type) slot->name = PL_ ## name; 767 #define VAR(name,type) slot->name = PL_ ## name;
574 # include "state.h" 768 # include "state.h"
575 #undef VAR 769 #undef VAR
576 } 770 }
577} 771}
578 772
579/* 773/*
580 * allocate various perl stacks. This is an exact copy 774 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 775 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 776 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 777 * not usually need a lot of stackspace.
584 */ 778 */
585#if CORO_PREFER_PERL_FUNCTIONS 779#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 780# define coro_init_stacks(thx) init_stacks ()
587#else 781#else
588static void 782static void
589coro_init_stacks (pTHX) 783coro_init_stacks (pTHX)
590{ 784{
591 PL_curstackinfo = new_stackinfo(32, 8); 785 PL_curstackinfo = new_stackinfo(32, 8);
… …
628 822
629/* 823/*
630 * destroy the stacks, the callchain etc... 824 * destroy the stacks, the callchain etc...
631 */ 825 */
632static void 826static void
633coro_destroy_stacks (pTHX) 827coro_destruct_stacks (pTHX)
634{ 828{
635 while (PL_curstackinfo->si_next) 829 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 830 PL_curstackinfo = PL_curstackinfo->si_next;
637 831
638 while (PL_curstackinfo) 832 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 848#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 849 Safefree (PL_retstack);
656#endif 850#endif
657} 851}
658 852
853#define CORO_RSS \
854 rss += sizeof (SYM (curstackinfo)); \
855 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
856 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
857 rss += SYM (tmps_max) * sizeof (SV *); \
858 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
859 rss += SYM (scopestack_max) * sizeof (I32); \
860 rss += SYM (savestack_max) * sizeof (ANY);
861
659static size_t 862static size_t
660coro_rss (pTHX_ struct coro *coro) 863coro_rss (pTHX_ struct coro *coro)
661{ 864{
662 size_t rss = sizeof (*coro); 865 size_t rss = sizeof (*coro);
663 866
664 if (coro->mainstack) 867 if (coro->mainstack)
665 { 868 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 869 if (coro->flags & CF_RUNNING)
670 { 870 {
671 slot = &tmp_slot; 871 #define SYM(sym) PL_ ## sym
672 872 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 873 #undef SYM
676 } 874 }
677 else 875 else
678 slot = coro->slot;
679
680 if (slot)
681 { 876 {
682 rss += sizeof (slot->curstackinfo); 877 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 878 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 879 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 880 }
694 } 881 }
695 882
696 return rss; 883 return rss;
697} 884}
… …
710#endif 897#endif
711 898
712/* 899/*
713 * This overrides the default magic get method of %SIG elements. 900 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 901 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide 902 * and instead of trying to save and restore the hash elements, we just provide
716 * readback here. 903 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */ 904 */
721static int 905static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 906coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{ 907{
724 const char *s = MgPV_nolen_const (mg); 908 const char *s = MgPV_nolen_const (mg);
… …
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 961 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778 962
779 if (svp) 963 if (svp)
780 { 964 {
781 SV *old = *svp; 965 SV *old = *svp;
782 *svp = newSVsv (sv); 966 *svp = SvOK (sv) ? newSVsv (sv) : 0;
783 SvREFCNT_dec (old); 967 SvREFCNT_dec (old);
784 return 0; 968 return 0;
785 } 969 }
786 } 970 }
787 971
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 972 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 973}
790 974
791static void 975static void
976prepare_nop (pTHX_ struct coro_transfer_args *ta)
977{
978 /* kind of mega-hacky, but works */
979 ta->next = ta->prev = (struct coro *)ta;
980}
981
982static int
983slf_check_nop (pTHX_ struct CoroSLF *frame)
984{
985 return 0;
986}
987
988static int
989slf_check_repeat (pTHX_ struct CoroSLF *frame)
990{
991 return 1;
992}
993
994static UNOP init_perl_op;
995
996static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 997init_perl (pTHX_ struct coro *coro)
793{ 998{
794 /* 999 /*
795 * emulate part of the perl startup here. 1000 * emulate part of the perl startup here.
796 */ 1001 */
797 coro_init_stacks (aTHX); 1002 coro_init_stacks (aTHX);
798 1003
799 PL_runops = RUNOPS_DEFAULT; 1004 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 1005 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 1006 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 1007 PL_comppad = 0;
1008 PL_comppad_name = 0;
1009 PL_comppad_name_fill = 0;
1010 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 1011 PL_curpm = 0;
804 PL_curpad = 0; 1012 PL_curpad = 0;
805 PL_localizing = 0; 1013 PL_localizing = 0;
806 PL_dirty = 0; 1014 PL_dirty = 0;
807 PL_restartop = 0; 1015 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 1016#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 1017 PL_parser = 0;
810#endif 1018#endif
1019 PL_hints = 0;
811 1020
812 /* recreate the die/warn hooks */ 1021 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1022 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1023 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815 1024
816 GvSV (PL_defgv) = newSV (0); 1025 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 1026 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 1027 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1028 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1029 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 1030 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1031 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 1032
823 { 1033 {
824 dSP; 1034 dSP;
825 LOGOP myop; 1035 UNOP myop;
826 1036
827 Zero (&myop, 1, LOGOP); 1037 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 1038 myop.op_next = Nullop;
1039 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 1040 myop.op_flags = OPf_WANT_VOID;
830 1041
831 PUSHMARK (SP); 1042 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1043 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 1044 PUTBACK;
834 PL_op = (OP *)&myop; 1045 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1046 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 1047 }
838 1048
839 /* this newly created coroutine might be run on an existing cctx which most 1049 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 1050 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 1051 */
844 ENTER; 1052 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 1053 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 1054
1055 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1056 init_perl_op.op_next = PL_op;
1057 init_perl_op.op_type = OP_ENTERSUB;
1058 init_perl_op.op_ppaddr = pp_slf;
1059 /* no flags etc. required, as an init function won't be called */
1060
1061 PL_op = (OP *)&init_perl_op;
1062
1063 /* copy throw, in case it was set before init_perl */
1064 CORO_THROW = coro->except;
1065
1066 SWAP_SVS (coro);
1067
1068 if (expect_false (enable_times))
1069 {
1070 coro_times_update ();
1071 coro_times_sub (coro);
1072 }
1073}
1074
847static void 1075static void
848coro_destroy (pTHX_ struct coro *coro) 1076coro_unwind_stacks (pTHX)
849{ 1077{
850 if (!IN_DESTRUCT) 1078 if (!IN_DESTRUCT)
851 { 1079 {
852 /* restore all saved variables and stuff */ 1080 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 1081 LEAVE_SCOPE (0);
… …
861 POPSTACK_TO (PL_mainstack); 1089 POPSTACK_TO (PL_mainstack);
862 1090
863 /* unwind main stack */ 1091 /* unwind main stack */
864 dounwind (-1); 1092 dounwind (-1);
865 } 1093 }
1094}
866 1095
867 SvREFCNT_dec (GvSV (PL_defgv)); 1096static void
868 SvREFCNT_dec (GvAV (PL_defgv)); 1097destroy_perl (pTHX_ struct coro *coro)
869 SvREFCNT_dec (GvSV (PL_errgv)); 1098{
870 SvREFCNT_dec (PL_defoutgv); 1099 SV *svf [9];
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873 1100
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876 1101 {
1102 struct coro *current = SvSTATE_current;
1103
1104 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1105
1106 save_perl (aTHX_ current);
1107 load_perl (aTHX_ coro);
1108
1109 coro_unwind_stacks (aTHX);
1110 coro_destruct_stacks (aTHX);
1111
1112 /* restore swapped sv's */
1113 SWAP_SVS (coro);
1114
1115 // now save some sv's to be free'd later
1116 svf [0] = GvSV (PL_defgv);
1117 svf [1] = (SV *)GvAV (PL_defgv);
1118 svf [2] = GvSV (PL_errgv);
1119 svf [3] = (SV *)PL_defoutgv;
1120 svf [4] = PL_rs;
1121 svf [5] = GvSV (irsgv);
1122 svf [6] = (SV *)GvHV (PL_hintgv);
1123 svf [7] = PL_diehook;
1124 svf [8] = PL_warnhook;
1125 assert (9 == sizeof (svf) / sizeof (*svf));
1126
1127 load_perl (aTHX_ current);
1128 }
1129
1130 {
1131 unsigned int i;
1132
1133 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1134 SvREFCNT_dec (svf [i]);
1135
877 SvREFCNT_dec (coro->saved_deffh); 1136 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 1137 SvREFCNT_dec (coro->rouse_cb);
879 1138 SvREFCNT_dec (coro->invoke_cb);
880 coro_destroy_stacks (aTHX); 1139 SvREFCNT_dec (coro->invoke_av);
1140 SvREFCNT_dec (coro->swap_sv);
1141 }
881} 1142}
882 1143
883static void 1144INLINE void
884free_coro_mortal (pTHX) 1145free_coro_mortal (pTHX)
885{ 1146{
886 if (expect_true (coro_mortal)) 1147 if (expect_true (coro_mortal))
887 { 1148 {
888 SvREFCNT_dec (coro_mortal); 1149 SvREFCNT_dec (coro_mortal);
… …
893static int 1154static int
894runops_trace (pTHX) 1155runops_trace (pTHX)
895{ 1156{
896 COP *oldcop = 0; 1157 COP *oldcop = 0;
897 int oldcxix = -2; 1158 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 1159
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1160 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 1161 {
903 PERL_ASYNC_CHECK (); 1162 PERL_ASYNC_CHECK ();
904 1163
905 if (cctx->flags & CC_TRACE_ALL) 1164 if (cctx_current->flags & CC_TRACE_ALL)
906 { 1165 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1166 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 1167 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1168 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 1169 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 1170 AV *av = newAV (); /* return values */
912 SV **cb; 1171 SV **cb;
… …
949 1208
950 if (PL_curcop != &PL_compiling) 1209 if (PL_curcop != &PL_compiling)
951 { 1210 {
952 SV **cb; 1211 SV **cb;
953 1212
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1213 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1214 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1215 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1216
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1217 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1218 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1219 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1220 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1221 SV *fullname = sv_2mortal (newSV (0));
964 1222
965 if (isGV (gv)) 1223 if (isGV (gv))
… …
970 SAVETMPS; 1228 SAVETMPS;
971 EXTEND (SP, 3); 1229 EXTEND (SP, 3);
972 PUSHMARK (SP); 1230 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1231 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1232 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1233 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1234 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1235 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1236 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1237 SPAGAIN;
980 FREETMPS; 1238 FREETMPS;
… …
983 } 1241 }
984 1242
985 oldcxix = cxstack_ix; 1243 oldcxix = cxstack_ix;
986 } 1244 }
987 1245
988 if (cctx->flags & CC_TRACE_LINE) 1246 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1247 {
990 dSP; 1248 dSP;
991 1249
992 PL_runops = RUNOPS_DEFAULT; 1250 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1251 ENTER;
… …
1012 1270
1013 TAINT_NOT; 1271 TAINT_NOT;
1014 return 0; 1272 return 0;
1015} 1273}
1016 1274
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1275static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1276
1019/* during execution of a perl program */ 1277static void
1278slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1279{
1280 ta->prev = 0;
1281}
1282
1283static int
1284slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1285{
1286 *frame = cctx_ssl_frame;
1287
1288 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1289}
1290
1291/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1292static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1293cctx_prepare (pTHX)
1022{ 1294{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1295 PL_top_env = &PL_start_env;
1027 1296
1028 if (cctx->flags & CC_TRACE) 1297 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1298 PL_runops = runops_trace;
1030 1299
1031 Zero (&myop, 1, LOGOP); 1300 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1301 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1302 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1303 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1304
1035 PUSHMARK (SP); 1305 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1306 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1307
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1308 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1309 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1310}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1311
1042 SPAGAIN; 1312/* the tail of transfer: execute stuff we can only do after a transfer */
1313INLINE void
1314transfer_tail (pTHX)
1315{
1316 free_coro_mortal (aTHX);
1043} 1317}
1044 1318
1045/* 1319/*
1046 * this is a _very_ stripped down perl interpreter ;) 1320 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1321 */
1048static void 1322static void
1049cctx_run (void *arg) 1323cctx_run (void *arg)
1050{ 1324{
1325#ifdef USE_ITHREADS
1326# if CORO_PTHREAD
1327 PERL_SET_CONTEXT (coro_thx);
1328# endif
1329#endif
1330 {
1051 dTHX; 1331 dTHX;
1052 1332
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1333 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1334 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1335 /* PL_nop = PL_nop->op_next */
1058 1336
1059 /* inject a fake subroutine call to cctx_init */ 1337 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1338 cctx_prepare (aTHX);
1061 1339
1340 /* cctx_run is the alternative tail of transfer() */
1341 transfer_tail (aTHX);
1342
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1343 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1344 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1345 perl_run (PL_curinterp);
1065
1066 /* 1346 /*
1347 * Unfortunately, there is no way to get at the return values of the
1348 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1349 * runtime errors here, as this is just a random interpreter, not a thread.
1350 */
1351
1352 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1353 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1354 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1355 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1356 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1357 * coroutine as Coro has no such concept.
1358 * This actually isn't valid with the pthread backend, but OSes requiring
1359 * that backend are too broken to do it in a standards-compliant way.
1072 */ 1360 */
1073 PL_top_env = main_top_env; 1361 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1362 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1363 }
1075} 1364}
1076 1365
1077static coro_cctx * 1366static coro_cctx *
1078cctx_new () 1367cctx_new ()
1079{ 1368{
1080 coro_cctx *cctx; 1369 coro_cctx *cctx;
1370
1371 ++cctx_count;
1372 New (0, cctx, 1, coro_cctx);
1373
1374 cctx->gen = cctx_gen;
1375 cctx->flags = 0;
1376 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1377
1378 return cctx;
1379}
1380
1381/* create a new cctx only suitable as source */
1382static coro_cctx *
1383cctx_new_empty ()
1384{
1385 coro_cctx *cctx = cctx_new ();
1386
1387 cctx->sptr = 0;
1388 coro_create (&cctx->cctx, 0, 0, 0, 0);
1389
1390 return cctx;
1391}
1392
1393/* create a new cctx suitable as destination/running a perl interpreter */
1394static coro_cctx *
1395cctx_new_run ()
1396{
1397 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1398 void *stack_start;
1082 size_t stack_size; 1399 size_t stack_size;
1083 1400
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1401#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1402 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1403 /* mmap supposedly does allocate-on-write for us */
1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1404 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1405
1093 if (cctx->sptr != (void *)-1) 1406 if (cctx->sptr != (void *)-1)
1094 { 1407 {
1095# if CORO_STACKGUARD 1408 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1409 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1410 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1411 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1412 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1413 cctx->flags |= CC_MAPPED;
1101 } 1414 }
1102 else 1415 else
1103#endif 1416#endif
1104 { 1417 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1418 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1419 New (0, cctx->sptr, cctx_stacksize, long);
1107 1420
1108 if (!cctx->sptr) 1421 if (!cctx->sptr)
1109 { 1422 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1423 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1424 _exit (EXIT_FAILURE);
1112 } 1425 }
1113 1426
1114 stack_start = cctx->sptr; 1427 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1428 stack_size = cctx->ssize;
1116 } 1429 }
1117 1430
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1431 #if CORO_USE_VALGRIND
1432 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1433 #endif
1434
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1435 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1436
1121 return cctx; 1437 return cctx;
1122} 1438}
1123 1439
… …
1125cctx_destroy (coro_cctx *cctx) 1441cctx_destroy (coro_cctx *cctx)
1126{ 1442{
1127 if (!cctx) 1443 if (!cctx)
1128 return; 1444 return;
1129 1445
1446 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1447
1130 --cctx_count; 1448 --cctx_count;
1449 coro_destroy (&cctx->cctx);
1131 1450
1451 /* coro_transfer creates new, empty cctx's */
1452 if (cctx->sptr)
1453 {
1132#if CORO_USE_VALGRIND 1454 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1455 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1456 #endif
1457
1458#if HAVE_MMAP
1459 if (cctx->flags & CC_MAPPED)
1460 munmap (cctx->sptr, cctx->ssize);
1461 else
1134#endif 1462#endif
1135
1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize);
1139 else
1140#endif
1141 Safefree (cctx->sptr); 1463 Safefree (cctx->sptr);
1464 }
1142 1465
1143 Safefree (cctx); 1466 Safefree (cctx);
1144} 1467}
1145 1468
1146/* wether this cctx should be destructed */ 1469/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1470#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1471
1149static coro_cctx * 1472static coro_cctx *
1150cctx_get (pTHX) 1473cctx_get (pTHX)
1151{ 1474{
1152 while (expect_true (cctx_first)) 1475 while (expect_true (cctx_first))
… …
1159 return cctx; 1482 return cctx;
1160 1483
1161 cctx_destroy (cctx); 1484 cctx_destroy (cctx);
1162 } 1485 }
1163 1486
1164 return cctx_new (); 1487 return cctx_new_run ();
1165} 1488}
1166 1489
1167static void 1490static void
1168cctx_put (coro_cctx *cctx) 1491cctx_put (coro_cctx *cctx)
1169{ 1492{
1493 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1494
1170 /* free another cctx if overlimit */ 1495 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1496 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1497 {
1173 coro_cctx *first = cctx_first; 1498 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1499 cctx_first = first->next;
1175 --cctx_idle; 1500 --cctx_idle;
1176 1501
… …
1185/** coroutine switching *****************************************************/ 1510/** coroutine switching *****************************************************/
1186 1511
1187static void 1512static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1513transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1514{
1515 /* TODO: throwing up here is considered harmful */
1516
1190 if (expect_true (prev != next)) 1517 if (expect_true (prev != next))
1191 { 1518 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1519 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1520 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1194 1521
1195 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED)) 1522 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1523 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1200 1524
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1525#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1526 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1527 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1528#endif
1205 } 1529 }
1206} 1530}
1207 1531
1208/* always use the TRANSFER macro */ 1532/* always use the TRANSFER macro */
1209static void NOINLINE 1533static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1534transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1535{
1212 dSTACKLEVEL; 1536 dSTACKLEVEL;
1213 1537
1214 /* sometimes transfer is only called to set idle_sp */ 1538 /* sometimes transfer is only called to set idle_sp */
1215 if (expect_false (!next)) 1539 if (expect_false (!prev))
1216 { 1540 {
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1541 cctx_current->idle_sp = STACKLEVEL;
1218 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1542 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1219 } 1543 }
1220 else if (expect_true (prev != next)) 1544 else if (expect_true (prev != next))
1221 { 1545 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1546 coro_cctx *cctx_prev;
1224 1547
1225 if (expect_false (prev->flags & CF_NEW)) 1548 if (expect_false (prev->flags & CF_NEW))
1226 { 1549 {
1227 /* create a new empty context */ 1550 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1551 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1552 prev->flags |= CF_RUNNING;
1231 } 1553 }
1232 1554
1233 prev->flags &= ~CF_RUNNING; 1555 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1556 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1557
1238 /* first get rid of the old state */ 1558 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1559 save_perl (aTHX_ prev);
1240 1560
1241 if (expect_false (next->flags & CF_NEW)) 1561 if (expect_false (next->flags & CF_NEW))
1242 { 1562 {
1243 /* need to start coroutine */ 1563 /* need to start coroutine */
1244 next->flags &= ~CF_NEW; 1564 next->flags &= ~CF_NEW;
1245 /* setup coroutine call */ 1565 /* setup coroutine call */
1246 coro_setup (aTHX_ next); 1566 init_perl (aTHX_ next);
1247 } 1567 }
1248 else 1568 else
1249 load_perl (aTHX_ next); 1569 load_perl (aTHX_ next);
1250 1570
1251 prev__cctx = prev->cctx;
1252
1253 /* possibly "free" the cctx */ 1571 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1572 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1573 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1574 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1575 && !force_cctx
1258 )) 1576 ))
1259 { 1577 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1578 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1579 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1580
1263 prev->cctx = 0;
1264
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1581 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1582 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1583 if (expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1584 if (expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1585 next->cctx = cctx_get (aTHX);
1270 1586
1271 cctx_put (prev__cctx); 1587 cctx_put (cctx_current);
1272 } 1588 }
1589 else
1590 prev->cctx = cctx_current;
1273 1591
1274 ++next->usecount; 1592 ++next->usecount;
1275 1593
1276 if (expect_true (!next->cctx)) 1594 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1595 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1596
1279 has_throw = !!next->throw; 1597 next->cctx = 0;
1280 1598
1281 if (expect_false (prev__cctx != next->cctx)) 1599 if (expect_false (cctx_prev != cctx_current))
1282 { 1600 {
1283 prev__cctx->top_env = PL_top_env; 1601 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1602 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1603 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1604 }
1287 1605
1288 free_coro_mortal (aTHX); 1606 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1607 }
1304} 1608}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1609
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1610#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1611#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1612
1314/** high level stuff ********************************************************/ 1613/** high level stuff ********************************************************/
… …
1316static int 1615static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1616coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1617{
1319 if (coro->flags & CF_DESTROYED) 1618 if (coro->flags & CF_DESTROYED)
1320 return 0; 1619 return 0;
1620
1621 if (coro->on_destroy && !PL_dirty)
1622 coro->on_destroy (aTHX_ coro);
1321 1623
1322 coro->flags |= CF_DESTROYED; 1624 coro->flags |= CF_DESTROYED;
1323 1625
1324 if (coro->flags & CF_READY) 1626 if (coro->flags & CF_READY)
1325 { 1627 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1628 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1629 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1630 --coro_nready;
1330 UNLOCK;
1331 } 1631 }
1332 else 1632 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1633 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1634
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1635 if (coro->mainstack
1336 { 1636 && coro->mainstack != main_mainstack
1337 struct coro temp; 1637 && coro->slot
1338 1638 && !PL_dirty)
1339 if (coro->flags & CF_RUNNING)
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341
1342 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1639 destroy_perl (aTHX_ coro);
1344
1345 coro_destroy (aTHX_ coro);
1346
1347 load_perl (aTHX_ &temp);
1348
1349 coro->slot = 0;
1350 }
1351 1640
1352 cctx_destroy (coro->cctx); 1641 cctx_destroy (coro->cctx);
1642 SvREFCNT_dec (coro->startcv);
1353 SvREFCNT_dec (coro->args); 1643 SvREFCNT_dec (coro->args);
1644 SvREFCNT_dec (CORO_THROW);
1354 1645
1355 if (coro->next) coro->next->prev = coro->prev; 1646 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1647 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1648 if (coro == coro_first) coro_first = coro->next;
1358 1649
… …
1396# define MGf_DUP 0 1687# define MGf_DUP 0
1397#endif 1688#endif
1398}; 1689};
1399 1690
1400static void 1691static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1692prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1693{
1403 ta->prev = SvSTATE (prev_sv); 1694 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1695 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1696 TRANSFER_CHECK (*ta);
1406} 1697}
1407 1698
1408static void 1699static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1700api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1701{
1411 dTHX;
1412 struct transfer_args ta; 1702 struct coro_transfer_args ta;
1413 1703
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1704 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1705 TRANSFER (ta, 1);
1416} 1706}
1417 1707
1418/** Coro ********************************************************************/ 1708/** Coro ********************************************************************/
1419 1709
1420static void 1710INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1711coro_enq (pTHX_ struct coro *coro)
1422{ 1712{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1713 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1424}
1425 1714
1426static SV * 1715 SvREFCNT_inc_NN (coro->hv);
1716
1717 coro->next_ready = 0;
1718 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1719 ready [1] = coro;
1720}
1721
1722INLINE struct coro *
1427coro_deq (pTHX) 1723coro_deq (pTHX)
1428{ 1724{
1429 int prio; 1725 int prio;
1430 1726
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1727 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1432 if (AvFILLp (coro_ready [prio]) >= 0) 1728 {
1433 return av_shift (coro_ready [prio]); 1729 struct coro **ready = coro_ready [prio];
1730
1731 if (ready [0])
1732 {
1733 struct coro *coro = ready [0];
1734 ready [0] = coro->next_ready;
1735 return coro;
1736 }
1737 }
1434 1738
1435 return 0; 1739 return 0;
1436} 1740}
1437 1741
1742static void
1743invoke_sv_ready_hook_helper (void)
1744{
1745 dTHX;
1746 dSP;
1747
1748 ENTER;
1749 SAVETMPS;
1750
1751 PUSHMARK (SP);
1752 PUTBACK;
1753 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1754
1755 FREETMPS;
1756 LEAVE;
1757}
1758
1438static int 1759static int
1439api_ready (SV *coro_sv) 1760api_ready (pTHX_ SV *coro_sv)
1440{ 1761{
1441 dTHX;
1442 struct coro *coro;
1443 SV *sv_hook;
1444 void (*xs_hook)(void);
1445
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1762 struct coro *coro = SvSTATE (coro_sv);
1450 1763
1451 if (coro->flags & CF_READY) 1764 if (coro->flags & CF_READY)
1452 return 0; 1765 return 0;
1453 1766
1454 coro->flags |= CF_READY; 1767 coro->flags |= CF_READY;
1455 1768
1456 LOCK; 1769 coro_enq (aTHX_ coro);
1457 1770
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1771 if (!coro_nready++)
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1772 if (coroapi.readyhook)
1460 1773 coroapi.readyhook ();
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1462 ++coro_nready;
1463
1464 UNLOCK;
1465
1466 if (sv_hook)
1467 {
1468 dSP;
1469
1470 ENTER;
1471 SAVETMPS;
1472
1473 PUSHMARK (SP);
1474 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD);
1476 SPAGAIN;
1477
1478 FREETMPS;
1479 LEAVE;
1480 }
1481
1482 if (xs_hook)
1483 xs_hook ();
1484 1774
1485 return 1; 1775 return 1;
1486} 1776}
1487 1777
1488static int 1778static int
1489api_is_ready (SV *coro_sv) 1779api_is_ready (pTHX_ SV *coro_sv)
1490{ 1780{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1781 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1782}
1494 1783
1495static void 1784/* expects to own a reference to next->hv */
1785INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1786prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1787{
1498 SV *prev_sv, *next_sv;
1499
1500 for (;;)
1501 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX);
1504
1505 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv))
1507 {
1508 dSP;
1509 UNLOCK;
1510
1511 ENTER;
1512 SAVETMPS;
1513
1514 PUSHMARK (SP);
1515 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1518
1519 FREETMPS;
1520 LEAVE;
1521 continue;
1522 }
1523
1524 ta->next = SvSTATE (next_sv);
1525
1526 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1532 continue;
1533 }
1534
1535 --coro_nready;
1536 UNLOCK;
1537 break;
1538 }
1539
1540 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1788 SV *prev_sv = SvRV (coro_current);
1789
1542 ta->prev = SvSTATE (prev_sv); 1790 ta->prev = SvSTATE_hv (prev_sv);
1791 ta->next = next;
1792
1543 TRANSFER_CHECK (*ta); 1793 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1794
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1795 SvRV_set (coro_current, (SV *)next->hv);
1547 1796
1548 LOCK;
1549 free_coro_mortal (aTHX); 1797 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1798 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1799}
1553 1800
1554static void 1801static void
1802prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1803{
1804 for (;;)
1805 {
1806 struct coro *next = coro_deq (aTHX);
1807
1808 if (expect_true (next))
1809 {
1810 /* cannot transfer to destroyed coros, skip and look for next */
1811 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1812 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1813 else
1814 {
1815 next->flags &= ~CF_READY;
1816 --coro_nready;
1817
1818 prepare_schedule_to (aTHX_ ta, next);
1819 break;
1820 }
1821 }
1822 else
1823 {
1824 /* nothing to schedule: call the idle handler */
1825 if (SvROK (sv_idle)
1826 && SvOBJECT (SvRV (sv_idle)))
1827 {
1828 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1829 api_ready (aTHX_ SvRV (sv_idle));
1830 --coro_nready;
1831 }
1832 else
1833 {
1834 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1835 dSP;
1836
1837 ENTER;
1838 SAVETMPS;
1839
1840 PUSHMARK (SP);
1841 PUTBACK;
1842 call_sv (sv_idle, G_VOID | G_DISCARD);
1843
1844 FREETMPS;
1845 LEAVE;
1846 }
1847 }
1848 }
1849}
1850
1851INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1852prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1853{
1557 api_ready (coro_current); 1854 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1855 prepare_schedule (aTHX_ ta);
1559} 1856}
1560 1857
1858INLINE void
1859prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1860{
1861 SV *prev = SvRV (coro_current);
1862
1863 if (coro_nready)
1864 {
1865 prepare_schedule (aTHX_ ta);
1866 api_ready (aTHX_ prev);
1867 }
1868 else
1869 prepare_nop (aTHX_ ta);
1870}
1871
1872static void
1873api_schedule (pTHX)
1874{
1875 struct coro_transfer_args ta;
1876
1877 prepare_schedule (aTHX_ &ta);
1878 TRANSFER (ta, 1);
1879}
1880
1881static void
1882api_schedule_to (pTHX_ SV *coro_sv)
1883{
1884 struct coro_transfer_args ta;
1885 struct coro *next = SvSTATE (coro_sv);
1886
1887 SvREFCNT_inc_NN (coro_sv);
1888 prepare_schedule_to (aTHX_ &ta, next);
1889}
1890
1561static int 1891static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1892api_cede (pTHX)
1563{ 1893{
1564 if (coro_nready) 1894 struct coro_transfer_args ta;
1565 { 1895
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1896 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1897
1898 if (expect_true (ta.prev != ta.next))
1899 {
1900 TRANSFER (ta, 1);
1569 return 1; 1901 return 1;
1570 } 1902 }
1571 else 1903 else
1572 return 0; 1904 return 0;
1573} 1905}
1574 1906
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1907static int
1586api_cede (void) 1908api_cede_notself (pTHX)
1587{ 1909{
1588 dTHX; 1910 if (coro_nready)
1911 {
1589 struct transfer_args ta; 1912 struct coro_transfer_args ta;
1590 1913
1591 prepare_cede (aTHX_ &ta); 1914 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1915 TRANSFER (ta, 1);
1596 return 1; 1916 return 1;
1597 } 1917 }
1598 else 1918 else
1599 return 0; 1919 return 0;
1600} 1920}
1601 1921
1602static int 1922static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 1923api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1924{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1925 struct coro *coro = SvSTATE (coro_sv);
1622 1926
1927 if (coro->flags & CF_RUNNING)
1928 croak ("cannot enable tracing on a running coroutine, caught");
1929
1623 if (flags & CC_TRACE) 1930 if (flags & CC_TRACE)
1624 { 1931 {
1625 if (!coro->cctx) 1932 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1933 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1934 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1935 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 1936
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1937 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1938 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1939 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1940 {
… …
1638 else 1945 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 1946 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 1947 }
1641} 1948}
1642 1949
1950static void
1951coro_call_on_destroy (pTHX_ struct coro *coro)
1952{
1953 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1954 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1955
1956 if (on_destroyp)
1957 {
1958 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1959
1960 while (AvFILLp (on_destroy) >= 0)
1961 {
1962 dSP; /* don't disturb outer sp */
1963 SV *cb = av_pop (on_destroy);
1964
1965 PUSHMARK (SP);
1966
1967 if (statusp)
1968 {
1969 int i;
1970 AV *status = (AV *)SvRV (*statusp);
1971 EXTEND (SP, AvFILLp (status) + 1);
1972
1973 for (i = 0; i <= AvFILLp (status); ++i)
1974 PUSHs (AvARRAY (status)[i]);
1975 }
1976
1977 PUTBACK;
1978 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1979 }
1980 }
1981}
1982
1983static void
1984slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1985{
1986 int i;
1987 HV *hv = (HV *)SvRV (coro_current);
1988 AV *av = newAV ();
1989
1990 /* items are actually not so common, so optimise for this case */
1991 if (items)
1992 {
1993 av_extend (av, items - 1);
1994
1995 for (i = 0; i < items; ++i)
1996 av_push (av, SvREFCNT_inc_NN (arg [i]));
1997 }
1998
1999 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2000
2001 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2002 api_ready (aTHX_ sv_manager);
2003
2004 frame->prepare = prepare_schedule;
2005 frame->check = slf_check_repeat;
2006
2007 /* as a minor optimisation, we could unwind all stacks here */
2008 /* but that puts extra pressure on pp_slf, and is not worth much */
2009 /*coro_unwind_stacks (aTHX);*/
2010}
2011
2012/*****************************************************************************/
2013/* async pool handler */
2014
1643static int 2015static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2016slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 2017{
1646 AV *padlist; 2018 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 2019 struct coro *coro = (struct coro *)frame->data;
1648 2020
1649 abort (); 2021 if (!coro->invoke_cb)
2022 return 1; /* loop till we have invoke */
2023 else
2024 {
2025 hv_store (hv, "desc", sizeof ("desc") - 1,
2026 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2027
2028 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2029
2030 {
2031 dSP;
2032 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2033 PUTBACK;
2034 }
2035
2036 SvREFCNT_dec (GvAV (PL_defgv));
2037 GvAV (PL_defgv) = coro->invoke_av;
2038 coro->invoke_av = 0;
2039
2040 return 0;
2041 }
2042}
2043
2044static void
2045slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2046{
2047 HV *hv = (HV *)SvRV (coro_current);
2048 struct coro *coro = SvSTATE_hv ((SV *)hv);
2049
2050 if (expect_true (coro->saved_deffh))
2051 {
2052 /* subsequent iteration */
2053 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2054 coro->saved_deffh = 0;
2055
2056 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2057 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2058 {
2059 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2060 coro->invoke_av = newAV ();
2061
2062 frame->prepare = prepare_nop;
2063 }
2064 else
2065 {
2066 av_clear (GvAV (PL_defgv));
2067 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2068
2069 coro->prio = 0;
2070
2071 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2072 api_trace (aTHX_ coro_current, 0);
2073
2074 frame->prepare = prepare_schedule;
2075 av_push (av_async_pool, SvREFCNT_inc (hv));
2076 }
2077 }
2078 else
2079 {
2080 /* first iteration, simply fall through */
2081 frame->prepare = prepare_nop;
2082 }
2083
2084 frame->check = slf_check_pool_handler;
2085 frame->data = (void *)coro;
2086}
2087
2088/*****************************************************************************/
2089/* rouse callback */
2090
2091#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2092
2093static void
2094coro_rouse_callback (pTHX_ CV *cv)
2095{
2096 dXSARGS;
2097 SV *data = (SV *)S_GENSUB_ARG;
2098
2099 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2100 {
2101 /* first call, set args */
2102 SV *coro = SvRV (data);
2103 AV *av = newAV ();
2104
2105 SvRV_set (data, (SV *)av);
2106
2107 /* better take a full copy of the arguments */
2108 while (items--)
2109 av_store (av, items, newSVsv (ST (items)));
2110
2111 api_ready (aTHX_ coro);
2112 SvREFCNT_dec (coro);
2113 }
2114
2115 XSRETURN_EMPTY;
2116}
2117
2118static int
2119slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2120{
2121 SV *data = (SV *)frame->data;
2122
2123 if (CORO_THROW)
2124 return 0;
2125
2126 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2127 return 1;
2128
2129 /* now push all results on the stack */
2130 {
2131 dSP;
2132 AV *av = (AV *)SvRV (data);
2133 int i;
2134
2135 EXTEND (SP, AvFILLp (av) + 1);
2136 for (i = 0; i <= AvFILLp (av); ++i)
2137 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2138
2139 /* we have stolen the elements, so set length to zero and free */
2140 AvFILLp (av) = -1;
2141 av_undef (av);
2142
2143 PUTBACK;
2144 }
1650 2145
1651 return 0; 2146 return 0;
1652} 2147}
1653 2148
1654static MGVTBL coro_gensub_vtbl = { 2149static void
1655 0, 0, 0, 0, 2150slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 2151{
1657}; 2152 SV *cb;
2153
2154 if (items)
2155 cb = arg [0];
2156 else
2157 {
2158 struct coro *coro = SvSTATE_current;
2159
2160 if (!coro->rouse_cb)
2161 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2162
2163 cb = sv_2mortal (coro->rouse_cb);
2164 coro->rouse_cb = 0;
2165 }
2166
2167 if (!SvROK (cb)
2168 || SvTYPE (SvRV (cb)) != SVt_PVCV
2169 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2170 croak ("Coro::rouse_wait called with illegal callback argument,");
2171
2172 {
2173 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2174 SV *data = (SV *)S_GENSUB_ARG;
2175
2176 frame->data = (void *)data;
2177 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2178 frame->check = slf_check_rouse_wait;
2179 }
2180}
2181
2182static SV *
2183coro_new_rouse_cb (pTHX)
2184{
2185 HV *hv = (HV *)SvRV (coro_current);
2186 struct coro *coro = SvSTATE_hv (hv);
2187 SV *data = newRV_inc ((SV *)hv);
2188 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2189
2190 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2191 SvREFCNT_dec (data); /* magicext increases the refcount */
2192
2193 SvREFCNT_dec (coro->rouse_cb);
2194 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2195
2196 return cb;
2197}
2198
2199/*****************************************************************************/
2200/* schedule-like-function opcode (SLF) */
2201
2202static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2203static const CV *slf_cv;
2204static SV **slf_argv;
2205static int slf_argc, slf_arga; /* count, allocated */
2206static I32 slf_ax; /* top of stack, for restore */
2207
2208/* this restores the stack in the case we patched the entersub, to */
2209/* recreate the stack frame as perl will on following calls */
2210/* since entersub cleared the stack */
2211static OP *
2212pp_restore (pTHX)
2213{
2214 int i;
2215 SV **SP = PL_stack_base + slf_ax;
2216
2217 PUSHMARK (SP);
2218
2219 EXTEND (SP, slf_argc + 1);
2220
2221 for (i = 0; i < slf_argc; ++i)
2222 PUSHs (sv_2mortal (slf_argv [i]));
2223
2224 PUSHs ((SV *)CvGV (slf_cv));
2225
2226 RETURNOP (slf_restore.op_first);
2227}
2228
2229static void
2230slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2231{
2232 SV **arg = (SV **)slf_frame.data;
2233
2234 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2235}
2236
2237static void
2238slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2239{
2240 if (items != 2)
2241 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2242
2243 frame->prepare = slf_prepare_transfer;
2244 frame->check = slf_check_nop;
2245 frame->data = (void *)arg; /* let's hope it will stay valid */
2246}
2247
2248static void
2249slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2250{
2251 frame->prepare = prepare_schedule;
2252 frame->check = slf_check_nop;
2253}
2254
2255static void
2256slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2257{
2258 struct coro *next = (struct coro *)slf_frame.data;
2259
2260 SvREFCNT_inc_NN (next->hv);
2261 prepare_schedule_to (aTHX_ ta, next);
2262}
2263
2264static void
2265slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2266{
2267 if (!items)
2268 croak ("Coro::schedule_to expects a coroutine argument, caught");
2269
2270 frame->data = (void *)SvSTATE (arg [0]);
2271 frame->prepare = slf_prepare_schedule_to;
2272 frame->check = slf_check_nop;
2273}
2274
2275static void
2276slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2277{
2278 api_ready (aTHX_ SvRV (coro_current));
2279
2280 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2281}
2282
2283static void
2284slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2285{
2286 frame->prepare = prepare_cede;
2287 frame->check = slf_check_nop;
2288}
2289
2290static void
2291slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 frame->prepare = prepare_cede_notself;
2294 frame->check = slf_check_nop;
2295}
2296
2297/*
2298 * these not obviously related functions are all rolled into one
2299 * function to increase chances that they all will call transfer with the same
2300 * stack offset
2301 * SLF stands for "schedule-like-function".
2302 */
2303static OP *
2304pp_slf (pTHX)
2305{
2306 I32 checkmark; /* mark SP to see how many elements check has pushed */
2307
2308 /* set up the slf frame, unless it has already been set-up */
2309 /* the latter happens when a new coro has been started */
2310 /* or when a new cctx was attached to an existing coroutine */
2311 if (expect_true (!slf_frame.prepare))
2312 {
2313 /* first iteration */
2314 dSP;
2315 SV **arg = PL_stack_base + TOPMARK + 1;
2316 int items = SP - arg; /* args without function object */
2317 SV *gv = *sp;
2318
2319 /* do a quick consistency check on the "function" object, and if it isn't */
2320 /* for us, divert to the real entersub */
2321 if (SvTYPE (gv) != SVt_PVGV
2322 || !GvCV (gv)
2323 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2324 return PL_ppaddr[OP_ENTERSUB](aTHX);
2325
2326 if (!(PL_op->op_flags & OPf_STACKED))
2327 {
2328 /* ampersand-form of call, use @_ instead of stack */
2329 AV *av = GvAV (PL_defgv);
2330 arg = AvARRAY (av);
2331 items = AvFILLp (av) + 1;
2332 }
2333
2334 /* now call the init function, which needs to set up slf_frame */
2335 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2336 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2337
2338 /* pop args */
2339 SP = PL_stack_base + POPMARK;
2340
2341 PUTBACK;
2342 }
2343
2344 /* now that we have a slf_frame, interpret it! */
2345 /* we use a callback system not to make the code needlessly */
2346 /* complicated, but so we can run multiple perl coros from one cctx */
2347
2348 do
2349 {
2350 struct coro_transfer_args ta;
2351
2352 slf_frame.prepare (aTHX_ &ta);
2353 TRANSFER (ta, 0);
2354
2355 checkmark = PL_stack_sp - PL_stack_base;
2356 }
2357 while (slf_frame.check (aTHX_ &slf_frame));
2358
2359 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2360
2361 /* exception handling */
2362 if (expect_false (CORO_THROW))
2363 {
2364 SV *exception = sv_2mortal (CORO_THROW);
2365
2366 CORO_THROW = 0;
2367 sv_setsv (ERRSV, exception);
2368 croak (0);
2369 }
2370
2371 /* return value handling - mostly like entersub */
2372 /* make sure we put something on the stack in scalar context */
2373 if (GIMME_V == G_SCALAR)
2374 {
2375 dSP;
2376 SV **bot = PL_stack_base + checkmark;
2377
2378 if (sp == bot) /* too few, push undef */
2379 bot [1] = &PL_sv_undef;
2380 else if (sp != bot + 1) /* too many, take last one */
2381 bot [1] = *sp;
2382
2383 SP = bot + 1;
2384
2385 PUTBACK;
2386 }
2387
2388 return NORMAL;
2389}
2390
2391static void
2392api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2393{
2394 int i;
2395 SV **arg = PL_stack_base + ax;
2396 int items = PL_stack_sp - arg + 1;
2397
2398 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2399
2400 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2401 && PL_op->op_ppaddr != pp_slf)
2402 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2403
2404 CvFLAGS (cv) |= CVf_SLF;
2405 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2406 slf_cv = cv;
2407
2408 /* we patch the op, and then re-run the whole call */
2409 /* we have to put the same argument on the stack for this to work */
2410 /* and this will be done by pp_restore */
2411 slf_restore.op_next = (OP *)&slf_restore;
2412 slf_restore.op_type = OP_CUSTOM;
2413 slf_restore.op_ppaddr = pp_restore;
2414 slf_restore.op_first = PL_op;
2415
2416 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2417
2418 if (PL_op->op_flags & OPf_STACKED)
2419 {
2420 if (items > slf_arga)
2421 {
2422 slf_arga = items;
2423 free (slf_argv);
2424 slf_argv = malloc (slf_arga * sizeof (SV *));
2425 }
2426
2427 slf_argc = items;
2428
2429 for (i = 0; i < items; ++i)
2430 slf_argv [i] = SvREFCNT_inc (arg [i]);
2431 }
2432 else
2433 slf_argc = 0;
2434
2435 PL_op->op_ppaddr = pp_slf;
2436 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2437
2438 PL_op = (OP *)&slf_restore;
2439}
2440
2441/*****************************************************************************/
2442/* dynamic wind */
2443
2444static void
2445on_enterleave_call (pTHX_ SV *cb)
2446{
2447 dSP;
2448
2449 PUSHSTACK;
2450
2451 PUSHMARK (SP);
2452 PUTBACK;
2453 call_sv (cb, G_VOID | G_DISCARD);
2454 SPAGAIN;
2455
2456 POPSTACK;
2457}
2458
2459static SV *
2460coro_avp_pop_and_free (pTHX_ AV **avp)
2461{
2462 AV *av = *avp;
2463 SV *res = av_pop (av);
2464
2465 if (AvFILLp (av) < 0)
2466 {
2467 *avp = 0;
2468 SvREFCNT_dec (av);
2469 }
2470
2471 return res;
2472}
2473
2474static void
2475coro_pop_on_enter (pTHX_ void *coro)
2476{
2477 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2478 SvREFCNT_dec (cb);
2479}
2480
2481static void
2482coro_pop_on_leave (pTHX_ void *coro)
2483{
2484 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2485 on_enterleave_call (aTHX_ sv_2mortal (cb));
2486}
1658 2487
1659/*****************************************************************************/ 2488/*****************************************************************************/
1660/* PerlIO::cede */ 2489/* PerlIO::cede */
1661 2490
1662typedef struct 2491typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2519 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2520 double now = nvtime ();
1692 2521
1693 if (now >= self->next) 2522 if (now >= self->next)
1694 { 2523 {
1695 api_cede (); 2524 api_cede (aTHX);
1696 self->next = now + self->every; 2525 self->next = now + self->every;
1697 } 2526 }
1698 2527
1699 return PerlIOBuf_flush (aTHX_ f); 2528 return PerlIOBuf_flush (aTHX_ f);
1700} 2529}
… …
1729 PerlIOBuf_get_ptr, 2558 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2559 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2560 PerlIOBuf_set_ptrcnt,
1732}; 2561};
1733 2562
2563/*****************************************************************************/
2564/* Coro::Semaphore & Coro::Signal */
2565
2566static SV *
2567coro_waitarray_new (pTHX_ int count)
2568{
2569 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2570 AV *av = newAV ();
2571 SV **ary;
2572
2573 /* unfortunately, building manually saves memory */
2574 Newx (ary, 2, SV *);
2575 AvALLOC (av) = ary;
2576#if PERL_VERSION_ATLEAST (5,10,0)
2577 AvARRAY (av) = ary;
2578#else
2579 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2580 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2581 SvPVX ((SV *)av) = (char *)ary;
2582#endif
2583 AvMAX (av) = 1;
2584 AvFILLp (av) = 0;
2585 ary [0] = newSViv (count);
2586
2587 return newRV_noinc ((SV *)av);
2588}
2589
2590/* semaphore */
2591
2592static void
2593coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2594{
2595 SV *count_sv = AvARRAY (av)[0];
2596 IV count = SvIVX (count_sv);
2597
2598 count += adjust;
2599 SvIVX (count_sv) = count;
2600
2601 /* now wake up as many waiters as are expected to lock */
2602 while (count > 0 && AvFILLp (av) > 0)
2603 {
2604 SV *cb;
2605
2606 /* swap first two elements so we can shift a waiter */
2607 AvARRAY (av)[0] = AvARRAY (av)[1];
2608 AvARRAY (av)[1] = count_sv;
2609 cb = av_shift (av);
2610
2611 if (SvOBJECT (cb))
2612 {
2613 api_ready (aTHX_ cb);
2614 --count;
2615 }
2616 else if (SvTYPE (cb) == SVt_PVCV)
2617 {
2618 dSP;
2619 PUSHMARK (SP);
2620 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2621 PUTBACK;
2622 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2623 }
2624
2625 SvREFCNT_dec (cb);
2626 }
2627}
2628
2629static void
2630coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2631{
2632 /* call $sem->adjust (0) to possibly wake up some other waiters */
2633 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2634}
2635
2636static int
2637slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2638{
2639 AV *av = (AV *)frame->data;
2640 SV *count_sv = AvARRAY (av)[0];
2641
2642 /* if we are about to throw, don't actually acquire the lock, just throw */
2643 if (CORO_THROW)
2644 return 0;
2645 else if (SvIVX (count_sv) > 0)
2646 {
2647 SvSTATE_current->on_destroy = 0;
2648
2649 if (acquire)
2650 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2651 else
2652 coro_semaphore_adjust (aTHX_ av, 0);
2653
2654 return 0;
2655 }
2656 else
2657 {
2658 int i;
2659 /* if we were woken up but can't down, we look through the whole */
2660 /* waiters list and only add us if we aren't in there already */
2661 /* this avoids some degenerate memory usage cases */
2662
2663 for (i = 1; i <= AvFILLp (av); ++i)
2664 if (AvARRAY (av)[i] == SvRV (coro_current))
2665 return 1;
2666
2667 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2668 return 1;
2669 }
2670}
2671
2672static int
2673slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2674{
2675 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2676}
2677
2678static int
2679slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2680{
2681 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2682}
2683
2684static void
2685slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2686{
2687 AV *av = (AV *)SvRV (arg [0]);
2688
2689 if (SvIVX (AvARRAY (av)[0]) > 0)
2690 {
2691 frame->data = (void *)av;
2692 frame->prepare = prepare_nop;
2693 }
2694 else
2695 {
2696 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2697
2698 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2699 frame->prepare = prepare_schedule;
2700
2701 /* to avoid race conditions when a woken-up coro gets terminated */
2702 /* we arrange for a temporary on_destroy that calls adjust (0) */
2703 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2704 }
2705}
2706
2707static void
2708slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2709{
2710 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2711 frame->check = slf_check_semaphore_down;
2712}
2713
2714static void
2715slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2716{
2717 if (items >= 2)
2718 {
2719 /* callback form */
2720 AV *av = (AV *)SvRV (arg [0]);
2721 SV *cb_cv = s_get_cv_croak (arg [1]);
2722
2723 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724
2725 if (SvIVX (AvARRAY (av)[0]) > 0)
2726 coro_semaphore_adjust (aTHX_ av, 0);
2727
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2734 frame->check = slf_check_semaphore_wait;
2735 }
2736}
2737
2738/* signal */
2739
2740static void
2741coro_signal_wake (pTHX_ AV *av, int count)
2742{
2743 SvIVX (AvARRAY (av)[0]) = 0;
2744
2745 /* now signal count waiters */
2746 while (count > 0 && AvFILLp (av) > 0)
2747 {
2748 SV *cb;
2749
2750 /* swap first two elements so we can shift a waiter */
2751 cb = AvARRAY (av)[0];
2752 AvARRAY (av)[0] = AvARRAY (av)[1];
2753 AvARRAY (av)[1] = cb;
2754
2755 cb = av_shift (av);
2756
2757 if (SvTYPE (cb) == SVt_PVCV)
2758 {
2759 dSP;
2760 PUSHMARK (SP);
2761 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2762 PUTBACK;
2763 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2764 }
2765 else
2766 {
2767 api_ready (aTHX_ cb);
2768 sv_setiv (cb, 0); /* signal waiter */
2769 }
2770
2771 SvREFCNT_dec (cb);
2772
2773 --count;
2774 }
2775}
2776
2777static int
2778slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2779{
2780 /* if we are about to throw, also stop waiting */
2781 return SvROK ((SV *)frame->data) && !CORO_THROW;
2782}
2783
2784static void
2785slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2786{
2787 AV *av = (AV *)SvRV (arg [0]);
2788
2789 if (items >= 2)
2790 {
2791 SV *cb_cv = s_get_cv_croak (arg [1]);
2792 av_push (av, SvREFCNT_inc_NN (cb_cv));
2793
2794 if (SvIVX (AvARRAY (av)[0]))
2795 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2796
2797 frame->prepare = prepare_nop;
2798 frame->check = slf_check_nop;
2799 }
2800 else if (SvIVX (AvARRAY (av)[0]))
2801 {
2802 SvIVX (AvARRAY (av)[0]) = 0;
2803 frame->prepare = prepare_nop;
2804 frame->check = slf_check_nop;
2805 }
2806 else
2807 {
2808 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2809
2810 av_push (av, waiter);
2811
2812 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2813 frame->prepare = prepare_schedule;
2814 frame->check = slf_check_signal_wait;
2815 }
2816}
2817
2818/*****************************************************************************/
2819/* Coro::AIO */
2820
2821#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2822
2823/* helper storage struct */
2824struct io_state
2825{
2826 int errorno;
2827 I32 laststype; /* U16 in 5.10.0 */
2828 int laststatval;
2829 Stat_t statcache;
2830};
2831
2832static void
2833coro_aio_callback (pTHX_ CV *cv)
2834{
2835 dXSARGS;
2836 AV *state = (AV *)S_GENSUB_ARG;
2837 SV *coro = av_pop (state);
2838 SV *data_sv = newSV (sizeof (struct io_state));
2839
2840 av_extend (state, items - 1);
2841
2842 sv_upgrade (data_sv, SVt_PV);
2843 SvCUR_set (data_sv, sizeof (struct io_state));
2844 SvPOK_only (data_sv);
2845
2846 {
2847 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2848
2849 data->errorno = errno;
2850 data->laststype = PL_laststype;
2851 data->laststatval = PL_laststatval;
2852 data->statcache = PL_statcache;
2853 }
2854
2855 /* now build the result vector out of all the parameters and the data_sv */
2856 {
2857 int i;
2858
2859 for (i = 0; i < items; ++i)
2860 av_push (state, SvREFCNT_inc_NN (ST (i)));
2861 }
2862
2863 av_push (state, data_sv);
2864
2865 api_ready (aTHX_ coro);
2866 SvREFCNT_dec (coro);
2867 SvREFCNT_dec ((AV *)state);
2868}
2869
2870static int
2871slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2872{
2873 AV *state = (AV *)frame->data;
2874
2875 /* if we are about to throw, return early */
2876 /* this does not cancel the aio request, but at least */
2877 /* it quickly returns */
2878 if (CORO_THROW)
2879 return 0;
2880
2881 /* one element that is an RV? repeat! */
2882 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2883 return 1;
2884
2885 /* restore status */
2886 {
2887 SV *data_sv = av_pop (state);
2888 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2889
2890 errno = data->errorno;
2891 PL_laststype = data->laststype;
2892 PL_laststatval = data->laststatval;
2893 PL_statcache = data->statcache;
2894
2895 SvREFCNT_dec (data_sv);
2896 }
2897
2898 /* push result values */
2899 {
2900 dSP;
2901 int i;
2902
2903 EXTEND (SP, AvFILLp (state) + 1);
2904 for (i = 0; i <= AvFILLp (state); ++i)
2905 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2906
2907 PUTBACK;
2908 }
2909
2910 return 0;
2911}
2912
2913static void
2914slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2915{
2916 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2917 SV *coro_hv = SvRV (coro_current);
2918 struct coro *coro = SvSTATE_hv (coro_hv);
2919
2920 /* put our coroutine id on the state arg */
2921 av_push (state, SvREFCNT_inc_NN (coro_hv));
2922
2923 /* first see whether we have a non-zero priority and set it as AIO prio */
2924 if (coro->prio)
2925 {
2926 dSP;
2927
2928 static SV *prio_cv;
2929 static SV *prio_sv;
2930
2931 if (expect_false (!prio_cv))
2932 {
2933 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2934 prio_sv = newSViv (0);
2935 }
2936
2937 PUSHMARK (SP);
2938 sv_setiv (prio_sv, coro->prio);
2939 XPUSHs (prio_sv);
2940
2941 PUTBACK;
2942 call_sv (prio_cv, G_VOID | G_DISCARD);
2943 }
2944
2945 /* now call the original request */
2946 {
2947 dSP;
2948 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2949 int i;
2950
2951 PUSHMARK (SP);
2952
2953 /* first push all args to the stack */
2954 EXTEND (SP, items + 1);
2955
2956 for (i = 0; i < items; ++i)
2957 PUSHs (arg [i]);
2958
2959 /* now push the callback closure */
2960 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2961
2962 /* now call the AIO function - we assume our request is uncancelable */
2963 PUTBACK;
2964 call_sv ((SV *)req, G_VOID | G_DISCARD);
2965 }
2966
2967 /* now that the requets is going, we loop toll we have a result */
2968 frame->data = (void *)state;
2969 frame->prepare = prepare_schedule;
2970 frame->check = slf_check_aio_req;
2971}
2972
2973static void
2974coro_aio_req_xs (pTHX_ CV *cv)
2975{
2976 dXSARGS;
2977
2978 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2979
2980 XSRETURN_EMPTY;
2981}
2982
2983/*****************************************************************************/
2984
2985#if CORO_CLONE
2986# include "clone.c"
2987#endif
2988
2989/*****************************************************************************/
2990
2991static SV *
2992coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2993{
2994 SV *coro_sv;
2995 struct coro *coro;
2996 MAGIC *mg;
2997 HV *hv;
2998 SV *cb;
2999 int i;
3000
3001 if (argc > 0)
3002 {
3003 cb = s_get_cv_croak (argv [0]);
3004
3005 if (!is_coro)
3006 {
3007 if (CvISXSUB (cb))
3008 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010 if (!CvROOT (cb))
3011 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012 }
3013 }
3014
3015 Newz (0, coro, 1, struct coro);
3016 coro->args = newAV ();
3017 coro->flags = CF_NEW;
3018
3019 if (coro_first) coro_first->prev = coro;
3020 coro->next = coro_first;
3021 coro_first = coro;
3022
3023 coro->hv = hv = newHV ();
3024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025 mg->mg_flags |= MGf_DUP;
3026 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3027
3028 if (argc > 0)
3029 {
3030 av_extend (coro->args, argc + is_coro - 1);
3031
3032 if (is_coro)
3033 {
3034 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035 cb = (SV *)cv_coro_run;
3036 }
3037
3038 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040 for (i = 1; i < argc; i++)
3041 av_push (coro->args, newSVsv (argv [i]));
3042 }
3043
3044 return coro_sv;
3045}
1734 3046
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3047MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 3048
1737PROTOTYPES: DISABLE 3049PROTOTYPES: DISABLE
1738 3050
1739BOOT: 3051BOOT:
1740{ 3052{
1741#ifdef USE_ITHREADS 3053#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 3054# if CORO_PTHREAD
3055 coro_thx = PERL_GET_CONTEXT;
3056# endif
1743#endif 3057#endif
1744 BOOT_PAGESIZE; 3058 BOOT_PAGESIZE;
3059
3060 cctx_current = cctx_new_empty ();
1745 3061
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3062 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3063 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 3064
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3065 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 3081 main_top_env = PL_top_env;
1766 3082
1767 while (main_top_env->je_prev) 3083 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 3084 main_top_env = main_top_env->je_prev;
1769 3085
3086 {
3087 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3088
3089 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3090 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3091
3092 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3093 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3094 }
3095
1770 coroapi.ver = CORO_API_VERSION; 3096 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION; 3097 coroapi.rev = CORO_API_REVISION;
3098
1772 coroapi.transfer = api_transfer; 3099 coroapi.transfer = api_transfer;
3100
3101 coroapi.sv_state = SvSTATE_;
3102 coroapi.execute_slf = api_execute_slf;
3103 coroapi.prepare_nop = prepare_nop;
3104 coroapi.prepare_schedule = prepare_schedule;
3105 coroapi.prepare_cede = prepare_cede;
3106 coroapi.prepare_cede_notself = prepare_cede_notself;
1773 3107
1774 { 3108 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3109 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1776 3110
1777 if (!svp) croak ("Time::HiRes is required"); 3111 if (!svp) croak ("Time::HiRes is required");
1778 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3112 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1779 3113
1780 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3114 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3115
3116 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3117 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
1781 } 3118 }
1782 3119
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3120 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1784} 3121}
1785 3122
1786SV * 3123SV *
1787new (char *klass, ...) 3124new (SV *klass, ...)
3125 ALIAS:
3126 Coro::new = 1
1788 CODE: 3127 CODE:
1789{ 3128 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1790 struct coro *coro; 3129 OUTPUT:
1791 MAGIC *mg;
1792 HV *hv;
1793 int i;
1794
1795 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV ();
1797 coro->flags = CF_NEW;
1798
1799 if (coro_first) coro_first->prev = coro;
1800 coro->next = coro_first;
1801 coro_first = coro;
1802
1803 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807
1808 av_extend (coro->args, items - 1);
1809 for (i = 1; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i)));
1811}
1812 OUTPUT:
1813 RETVAL 3130 RETVAL
1814 3131
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void 3132void
1819_set_stacklevel (...) 3133transfer (...)
1820 ALIAS: 3134 PROTOTYPE: $$
1821 Coro::State::transfer = 1 3135 CODE:
1822 Coro::schedule = 2 3136 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866 3137
1867bool 3138bool
1868_destroy (SV *coro_sv) 3139_destroy (SV *coro_sv)
1869 CODE: 3140 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3141 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875_exit (int code) 3146_exit (int code)
1876 PROTOTYPE: $ 3147 PROTOTYPE: $
1877 CODE: 3148 CODE:
1878 _exit (code); 3149 _exit (code);
1879 3150
3151SV *
3152clone (Coro::State coro)
3153 CODE:
3154{
3155#if CORO_CLONE
3156 struct coro *ncoro = coro_clone (aTHX_ coro);
3157 MAGIC *mg;
3158 /* TODO: too much duplication */
3159 ncoro->hv = newHV ();
3160 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3161 mg->mg_flags |= MGf_DUP;
3162 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3163#else
3164 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3165#endif
3166}
3167 OUTPUT:
3168 RETVAL
3169
1880int 3170int
1881cctx_stacksize (int new_stacksize = 0) 3171cctx_stacksize (int new_stacksize = 0)
3172 PROTOTYPE: ;$
1882 CODE: 3173 CODE:
1883 RETVAL = coro_stacksize; 3174 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 3175 if (new_stacksize)
3176 {
1885 coro_stacksize = new_stacksize; 3177 cctx_stacksize = new_stacksize;
3178 ++cctx_gen;
3179 }
1886 OUTPUT: 3180 OUTPUT:
1887 RETVAL 3181 RETVAL
1888 3182
1889int 3183int
3184cctx_max_idle (int max_idle = 0)
3185 PROTOTYPE: ;$
3186 CODE:
3187 RETVAL = cctx_max_idle;
3188 if (max_idle > 1)
3189 cctx_max_idle = max_idle;
3190 OUTPUT:
3191 RETVAL
3192
3193int
1890cctx_count () 3194cctx_count ()
3195 PROTOTYPE:
1891 CODE: 3196 CODE:
1892 RETVAL = cctx_count; 3197 RETVAL = cctx_count;
1893 OUTPUT: 3198 OUTPUT:
1894 RETVAL 3199 RETVAL
1895 3200
1896int 3201int
1897cctx_idle () 3202cctx_idle ()
3203 PROTOTYPE:
1898 CODE: 3204 CODE:
1899 RETVAL = cctx_idle; 3205 RETVAL = cctx_idle;
1900 OUTPUT: 3206 OUTPUT:
1901 RETVAL 3207 RETVAL
1902 3208
1903void 3209void
1904list () 3210list ()
3211 PROTOTYPE:
1905 PPCODE: 3212 PPCODE:
1906{ 3213{
1907 struct coro *coro; 3214 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 3215 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 3216 if (coro->hv)
… …
1916 eval = 1 3223 eval = 1
1917 CODE: 3224 CODE:
1918{ 3225{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3226 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 { 3227 {
1921 struct coro temp; 3228 struct coro *current = SvSTATE_current;
1922 3229
1923 if (!(coro->flags & CF_RUNNING)) 3230 if (current != coro)
1924 { 3231 {
1925 PUTBACK; 3232 PUTBACK;
1926 save_perl (aTHX_ &temp); 3233 save_perl (aTHX_ current);
1927 load_perl (aTHX_ coro); 3234 load_perl (aTHX_ coro);
3235 SPAGAIN;
1928 } 3236 }
1929 3237
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK; 3238 PUSHSTACK;
3239
1936 PUSHMARK (SP); 3240 PUSHMARK (SP);
3241 PUTBACK;
1937 3242
1938 if (ix) 3243 if (ix)
1939 eval_sv (coderef, 0); 3244 eval_sv (coderef, 0);
1940 else 3245 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3246 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942 3247
1943 POPSTACK; 3248 POPSTACK;
1944 SPAGAIN; 3249 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949 3250
1950 if (!(coro->flags & CF_RUNNING)) 3251 if (current != coro)
1951 { 3252 {
3253 PUTBACK;
1952 save_perl (aTHX_ coro); 3254 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp); 3255 load_perl (aTHX_ current);
1954 SPAGAIN; 3256 SPAGAIN;
1955 } 3257 }
1956 } 3258 }
1957} 3259}
1958 3260
… …
1962 ALIAS: 3264 ALIAS:
1963 is_ready = CF_READY 3265 is_ready = CF_READY
1964 is_running = CF_RUNNING 3266 is_running = CF_RUNNING
1965 is_new = CF_NEW 3267 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED 3268 is_destroyed = CF_DESTROYED
3269 is_suspended = CF_SUSPENDED
1967 CODE: 3270 CODE:
1968 RETVAL = boolSV (coro->flags & ix); 3271 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3272 OUTPUT:
1970 RETVAL 3273 RETVAL
1971 3274
1972void 3275void
3276throw (Coro::State self, SV *throw = &PL_sv_undef)
3277 PROTOTYPE: $;$
3278 CODE:
3279{
3280 struct coro *current = SvSTATE_current;
3281 SV **throwp = self == current ? &CORO_THROW : &self->except;
3282 SvREFCNT_dec (*throwp);
3283 SvGETMAGIC (throw);
3284 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3285}
3286
3287void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3288api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3289 PROTOTYPE: $;$
3290 C_ARGS: aTHX_ coro, flags
1974 3291
1975SV * 3292SV *
1976has_cctx (Coro::State coro) 3293has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3294 PROTOTYPE: $
1978 CODE: 3295 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3296 /* maybe manage the running flag differently */
3297 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3298 OUTPUT:
1981 RETVAL 3299 RETVAL
1982 3300
1983int 3301int
1984is_traced (Coro::State coro) 3302is_traced (Coro::State coro)
… …
1986 CODE: 3304 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3305 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3306 OUTPUT:
1989 RETVAL 3307 RETVAL
1990 3308
1991IV 3309UV
1992rss (Coro::State coro) 3310rss (Coro::State coro)
1993 PROTOTYPE: $ 3311 PROTOTYPE: $
1994 ALIAS: 3312 ALIAS:
1995 usecount = 1 3313 usecount = 1
1996 CODE: 3314 CODE:
… …
2002 OUTPUT: 3320 OUTPUT:
2003 RETVAL 3321 RETVAL
2004 3322
2005void 3323void
2006force_cctx () 3324force_cctx ()
3325 PROTOTYPE:
2007 CODE: 3326 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3327 cctx_current->idle_sp = 0;
2010 3328
2011void 3329void
2012swap_defsv (Coro::State self) 3330swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 3331 PROTOTYPE: $
2014 ALIAS: 3332 ALIAS:
2015 swap_defav = 1 3333 swap_defav = 1
2016 CODE: 3334 CODE:
2017 if (!self->slot) 3335 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 3336 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 3337 else
2020 { 3338 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3339 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3340 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 3341
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 3342 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 3343 }
2026 3344
3345void
3346cancel (Coro::State self)
3347 CODE:
3348 coro_state_destroy (aTHX_ self);
3349 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3350
3351
3352SV *
3353enable_times (int enabled = enable_times)
3354 CODE:
3355{
3356 RETVAL = boolSV (enable_times);
3357
3358 if (enabled != enable_times)
3359 {
3360 enable_times = enabled;
3361
3362 coro_times_update ();
3363 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3364 }
3365}
3366 OUTPUT:
3367 RETVAL
3368
3369void
3370times (Coro::State self)
3371 PPCODE:
3372{
3373 struct coro *current = SvSTATE (coro_current);
3374
3375 if (expect_false (current == self))
3376 {
3377 coro_times_update ();
3378 coro_times_add (SvSTATE (coro_current));
3379 }
3380
3381 EXTEND (SP, 2);
3382 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3383 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3384
3385 if (expect_false (current == self))
3386 coro_times_sub (SvSTATE (coro_current));
3387}
3388
3389void
3390swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3391 CODE:
3392{
3393 struct coro *current = SvSTATE_current;
3394
3395 if (current == coro)
3396 SWAP_SVS (current);
3397
3398 if (!coro->swap_sv)
3399 coro->swap_sv = newAV ();
3400
3401 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3402 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3403
3404 if (current == coro)
3405 SWAP_SVS (current);
3406}
3407
3408
2027MODULE = Coro::State PACKAGE = Coro 3409MODULE = Coro::State PACKAGE = Coro
2028 3410
2029BOOT: 3411BOOT:
2030{ 3412{
2031 int i;
2032
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3413 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3414 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 3415 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3416 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3417 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2038 SvREADONLY_on (coro_current); 3418 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3419 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3420 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3421 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2039 3422
3423 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3424 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3425 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3426 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3427
2040 coro_stash = gv_stashpv ("Coro", TRUE); 3428 coro_stash = gv_stashpv ("Coro", TRUE);
2041 3429
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2044 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2045 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2046 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2047 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2048
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV ();
2051 3436
2052 { 3437 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 3438 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 3439
2056 coroapi.schedule = api_schedule; 3440 coroapi.schedule = api_schedule;
3441 coroapi.schedule_to = api_schedule_to;
2057 coroapi.cede = api_cede; 3442 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 3443 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 3444 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 3445 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 3446 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 3447 coroapi.current = coro_current;
2063 3448
2064 GCoroAPI = &coroapi; 3449 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 3450 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 3451 SvREADONLY_on (sv);
2067 } 3452 }
2068} 3453}
3454
3455SV *
3456async (...)
3457 PROTOTYPE: &@
3458 CODE:
3459 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3460 api_ready (aTHX_ RETVAL);
3461 OUTPUT:
3462 RETVAL
3463
3464void
3465terminate (...)
3466 CODE:
3467 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3468
3469void
3470schedule (...)
3471 CODE:
3472 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3473
3474void
3475schedule_to (...)
3476 CODE:
3477 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3478
3479void
3480cede_to (...)
3481 CODE:
3482 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3483
3484void
3485cede (...)
3486 CODE:
3487 CORO_EXECUTE_SLF_XS (slf_init_cede);
3488
3489void
3490cede_notself (...)
3491 CODE:
3492 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2069 3493
2070void 3494void
2071_set_current (SV *current) 3495_set_current (SV *current)
2072 PROTOTYPE: $ 3496 PROTOTYPE: $
2073 CODE: 3497 CODE:
… …
2076 3500
2077void 3501void
2078_set_readyhook (SV *hook) 3502_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3503 PROTOTYPE: $
2080 CODE: 3504 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3505 SvREFCNT_dec (coro_readyhook);
3506 SvGETMAGIC (hook);
3507 if (SvOK (hook))
3508 {
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3509 coro_readyhook = newSVsv (hook);
2084 UNLOCK; 3510 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3511 }
3512 else
3513 {
3514 coro_readyhook = 0;
3515 CORO_READYHOOK = 0;
3516 }
2085 3517
2086int 3518int
2087prio (Coro::State coro, int newprio = 0) 3519prio (Coro::State coro, int newprio = 0)
3520 PROTOTYPE: $;$
2088 ALIAS: 3521 ALIAS:
2089 nice = 1 3522 nice = 1
2090 CODE: 3523 CODE:
2091{ 3524{
2092 RETVAL = coro->prio; 3525 RETVAL = coro->prio;
… …
2094 if (items > 1) 3527 if (items > 1)
2095 { 3528 {
2096 if (ix) 3529 if (ix)
2097 newprio = coro->prio - newprio; 3530 newprio = coro->prio - newprio;
2098 3531
2099 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3532 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2100 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3533 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2101 3534
2102 coro->prio = newprio; 3535 coro->prio = newprio;
2103 } 3536 }
2104} 3537}
2105 OUTPUT: 3538 OUTPUT:
… …
2107 3540
2108SV * 3541SV *
2109ready (SV *self) 3542ready (SV *self)
2110 PROTOTYPE: $ 3543 PROTOTYPE: $
2111 CODE: 3544 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3545 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3546 OUTPUT:
2114 RETVAL 3547 RETVAL
2115 3548
2116int 3549int
2117nready (...) 3550nready (...)
… …
2120 RETVAL = coro_nready; 3553 RETVAL = coro_nready;
2121 OUTPUT: 3554 OUTPUT:
2122 RETVAL 3555 RETVAL
2123 3556
2124void 3557void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3558suspend (Coro::State self)
2126 PROTOTYPE: $;$ 3559 PROTOTYPE: $
2127 CODE: 3560 CODE:
2128 SvREFCNT_dec (self->throw); 3561 self->flags |= CF_SUSPENDED;
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3562
2131# for async_pool speedup
2132void 3563void
2133_pool_1 (SV *cb) 3564resume (Coro::State self)
3565 PROTOTYPE: $
2134 CODE: 3566 CODE:
2135{ 3567 self->flags &= ~CF_SUSPENDED;
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142 3568
2143 if (!invoke) 3569void
3570_pool_handler (...)
3571 CODE:
3572 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3573
3574void
3575async_pool (SV *cv, ...)
3576 PROTOTYPE: &@
3577 PPCODE:
3578{
3579 HV *hv = (HV *)av_pop (av_async_pool);
3580 AV *av = newAV ();
3581 SV *cb = ST (0);
3582 int i;
3583
3584 av_extend (av, items - 2);
3585 for (i = 1; i < items; ++i)
3586 av_push (av, SvREFCNT_inc_NN (ST (i)));
3587
3588 if ((SV *)hv == &PL_sv_undef)
2144 { 3589 {
2145 SV *old = PL_diehook; 3590 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2146 PL_diehook = 0; 3591 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2147 SvREFCNT_dec (old); 3592 SvREFCNT_dec (sv);
2148 croak ("\3async_pool terminate\2\n");
2149 } 3593 }
2150 3594
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 { 3595 {
2164 av_fill (defav, len - 1); 3596 struct coro *coro = SvSTATE_hv (hv);
2165 for (i = 0; i < len; ++i) 3597
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3598 assert (!coro->invoke_cb);
3599 assert (!coro->invoke_av);
3600 coro->invoke_cb = SvREFCNT_inc (cb);
3601 coro->invoke_av = av;
2167 } 3602 }
2168 3603
3604 api_ready (aTHX_ (SV *)hv);
3605
3606 if (GIMME_V != G_VOID)
3607 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3608 else
2169 SvREFCNT_dec (invoke); 3609 SvREFCNT_dec (hv);
2170} 3610}
2171 3611
2172void 3612SV *
2173_pool_2 (SV *cb) 3613rouse_cb ()
3614 PROTOTYPE:
2174 CODE: 3615 CODE:
2175{ 3616 RETVAL = coro_new_rouse_cb (aTHX);
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3617 OUTPUT:
2248 RETVAL 3618 RETVAL
2249 3619
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3620void
2256_get_state (SV *self) 3621rouse_wait (...)
3622 PROTOTYPE: ;$
2257 PPCODE: 3623 PPCODE:
2258{ 3624 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283 3625
2284void 3626void
2285_set_state (SV *state) 3627on_enter (SV *block)
3628 ALIAS:
3629 on_leave = 1
2286 PROTOTYPE: $ 3630 PROTOTYPE: &
3631 CODE:
3632{
3633 struct coro *coro = SvSTATE_current;
3634 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3635
3636 block = s_get_cv_croak (block);
3637
3638 if (!*avp)
3639 *avp = newAV ();
3640
3641 av_push (*avp, SvREFCNT_inc (block));
3642
3643 if (!ix)
3644 on_enterleave_call (aTHX_ block);
3645
3646 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3647 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3648 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3649}
3650
3651
3652MODULE = Coro::State PACKAGE = PerlIO::cede
3653
3654BOOT:
3655 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3656
3657
3658MODULE = Coro::State PACKAGE = Coro::Semaphore
3659
3660SV *
3661new (SV *klass, SV *count = 0)
3662 CODE:
3663{
3664 int semcnt = 1;
3665
3666 if (count)
3667 {
3668 SvGETMAGIC (count);
3669
3670 if (SvOK (count))
3671 semcnt = SvIV (count);
3672 }
3673
3674 RETVAL = sv_bless (
3675 coro_waitarray_new (aTHX_ semcnt),
3676 GvSTASH (CvGV (cv))
3677 );
3678}
3679 OUTPUT:
3680 RETVAL
3681
3682# helper for Coro::Channel and others
3683SV *
3684_alloc (int count)
3685 CODE:
3686 RETVAL = coro_waitarray_new (aTHX_ count);
3687 OUTPUT:
3688 RETVAL
3689
3690SV *
3691count (SV *self)
3692 CODE:
3693 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3694 OUTPUT:
3695 RETVAL
3696
3697void
3698up (SV *self, int adjust = 1)
3699 ALIAS:
3700 adjust = 1
3701 CODE:
3702 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3703
3704void
3705down (...)
3706 CODE:
3707 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3708
3709void
3710wait (...)
3711 CODE:
3712 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3713
3714void
3715try (SV *self)
3716 PPCODE:
3717{
3718 AV *av = (AV *)SvRV (self);
3719 SV *count_sv = AvARRAY (av)[0];
3720 IV count = SvIVX (count_sv);
3721
3722 if (count > 0)
3723 {
3724 --count;
3725 SvIVX (count_sv) = count;
3726 XSRETURN_YES;
3727 }
3728 else
3729 XSRETURN_NO;
3730}
3731
3732void
3733waiters (SV *self)
3734 PPCODE:
3735{
3736 AV *av = (AV *)SvRV (self);
3737 int wcount = AvFILLp (av) + 1 - 1;
3738
3739 if (GIMME_V == G_SCALAR)
3740 XPUSHs (sv_2mortal (newSViv (wcount)));
3741 else
3742 {
3743 int i;
3744 EXTEND (SP, wcount);
3745 for (i = 1; i <= wcount; ++i)
3746 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3747 }
3748}
3749
3750MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3751
3752void
3753_may_delete (SV *sem, int count, int extra_refs)
2287 PPCODE: 3754 PPCODE:
2288{ 3755{
2289 AV *av = (AV *)SvRV (state); 3756 AV *av = (AV *)SvRV (sem);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
2292 3757
2293 errno = data->errorno; 3758 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2294 PL_laststype = data->laststype; 3759 && AvFILLp (av) == 0 /* no waiters, just count */
2295 PL_laststatval = data->laststatval; 3760 && SvIV (AvARRAY (av)[0]) == count)
2296 PL_statcache = data->statcache; 3761 XSRETURN_YES;
2297 3762
3763 XSRETURN_NO;
3764}
3765
3766MODULE = Coro::State PACKAGE = Coro::Signal
3767
3768SV *
3769new (SV *klass)
3770 CODE:
3771 RETVAL = sv_bless (
3772 coro_waitarray_new (aTHX_ 0),
3773 GvSTASH (CvGV (cv))
3774 );
3775 OUTPUT:
3776 RETVAL
3777
3778void
3779wait (...)
3780 CODE:
3781 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3782
3783void
3784broadcast (SV *self)
3785 CODE:
3786{
3787 AV *av = (AV *)SvRV (self);
3788 coro_signal_wake (aTHX_ av, AvFILLp (av));
3789}
3790
3791void
3792send (SV *self)
3793 CODE:
3794{
3795 AV *av = (AV *)SvRV (self);
3796
2298 EXTEND (SP, AvFILLp (av)); 3797 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3798 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3799 else
3800 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3801}
3802
3803IV
3804awaited (SV *self)
3805 CODE:
3806 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3807 OUTPUT:
3808 RETVAL
2302 3809
2303 3810
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3811MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3812
2306BOOT: 3813BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3814 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3815
2309SV * 3816void
2310_schedule (...) 3817_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3818 CODE:
2313{ 3819{
2314 static int incede; 3820 static int incede;
2315 3821
2316 api_cede_notself (); 3822 api_cede_notself (aTHX);
2317 3823
2318 ++incede; 3824 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3825 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3826 ;
2321 3827
2322 sv_setsv (sv_activity, &PL_sv_undef); 3828 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3829 if (coro_nready >= incede)
2324 { 3830 {
2325 PUSHMARK (SP); 3831 PUSHMARK (SP);
2326 PUTBACK; 3832 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3833 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3834 }
2330 3835
2331 --incede; 3836 --incede;
2332} 3837}
2333 3838
2334 3839
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3840MODULE = Coro::State PACKAGE = Coro::AIO
2336 3841
2337BOOT: 3842void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3843_register (char *target, char *proto, SV *req)
3844 CODE:
3845{
3846 SV *req_cv = s_get_cv_croak (req);
3847 /* newXSproto doesn't return the CV on 5.8 */
3848 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3849 sv_setpv ((SV *)slf_cv, proto);
3850 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3851}
3852
3853MODULE = Coro::State PACKAGE = Coro::Select
3854
3855void
3856patch_pp_sselect ()
3857 CODE:
3858 if (!coro_old_pp_sselect)
3859 {
3860 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3861 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3862 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3863 }
3864
3865void
3866unpatch_pp_sselect ()
3867 CODE:
3868 if (coro_old_pp_sselect)
3869 {
3870 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3871 coro_old_pp_sselect = 0;
3872 }
3873
3874

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