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Comparing Coro/Coro/State.xs (file contents):
Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC vs.
Revision 1.422 by root, Sat Oct 6 21:25:24 2012 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
14#include "perliol.h"
9 15
10#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
11 18
19#include <stddef.h>
12#include <stdio.h> 20#include <stdio.h>
13#include <errno.h> 21#include <errno.h>
14#include <assert.h> 22#include <assert.h>
15 23
24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
30# undef setjmp
31# undef longjmp
32# undef _exit
33# define setjmp _setjmp /* deep magic */
34#else
35# include <inttypes.h> /* most portable stdint.h */
36#endif
37
16#ifdef HAVE_MMAP 38#if HAVE_MMAP
17# include <unistd.h> 39# include <unistd.h>
18# include <sys/mman.h> 40# include <sys/mman.h>
19# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
20# ifdef MAP_ANON 42# ifdef MAP_ANON
21# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
36# define BOOT_PAGESIZE (void)0 58# define BOOT_PAGESIZE (void)0
37#endif 59#endif
38 60
39#if CORO_USE_VALGRIND 61#if CORO_USE_VALGRIND
40# include <valgrind/valgrind.h> 62# include <valgrind/valgrind.h>
41# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42#else
43# define REGISTER_STACK(cctx,start,end)
44#endif 63#endif
45 64
46/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
47#define MAX_IDLE_CCTX 8 66static int cctx_max_idle = 4;
48 67
49#define PERL_VERSION_ATLEAST(a,b,c) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
50 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
51 || (PERL_REVISION == (a) \
52 && (PERL_VERSION > (b) \
53 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
54
55#if !PERL_VERSION_ATLEAST (5,6,0)
56# ifndef PL_ppaddr
57# define PL_ppaddr ppaddr
58# endif
59# ifndef call_sv
60# define call_sv perl_call_sv
61# endif
62# ifndef get_sv
63# define get_sv perl_get_sv
64# endif
65# ifndef get_cv
66# define get_cv perl_get_cv
67# endif
68# ifndef IS_PADGV
69# define IS_PADGV(v) 0
70# endif
71# ifndef IS_PADCONST
72# define IS_PADCONST(v) 0
73# endif
74#endif
75
76/* 5.8.7 */
77#ifndef SvRV_set
78# define SvRV_set(s,v) SvRV(s) = (v)
79#endif
80
81/* 5.8.8 */
82#ifndef GV_NOTQUAL
83# define GV_NOTQUAL 0
84#endif
85#ifndef newSV
86# define newSV(l) NEWSV(0,l)
87#endif 70#endif
88 71
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
91#endif 74#endif
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 82# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 83#endif
101 84
102/* The next macros try to return the current stack pointer, in an as 85/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 86 * portable way as possible. */
104#define dSTACKLEVEL volatile char stacklevel
105#define STACKLEVEL ((void *)&stacklevel)
106
107#define IN_DESTRUCT (PL_main_cv == Nullcv)
108
109#if __GNUC__ >= 3 87#if __GNUC__ >= 4
110# define attribute(x) __attribute__(x) 88# define dSTACKLEVEL int stacklevel_dummy
111# define BARRIER __asm__ __volatile__ ("" : : : "memory") 89# define STACKLEVEL __builtin_frame_address (0)
112# define expect(expr,value) __builtin_expect ((expr),(value))
113#else 90#else
114# define attribute(x) 91# define dSTACKLEVEL volatile void *stacklevel
115# define BARRIER 92# define STACKLEVEL ((void *)&stacklevel)
116# define expect(expr,value) (expr)
117#endif 93#endif
118 94
119#define expect_false(expr) expect ((expr) != 0, 0) 95#define IN_DESTRUCT PL_dirty
120#define expect_true(expr) expect ((expr) != 0, 1)
121
122#define NOINLINE attribute ((noinline))
123 96
124#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
125 99
126#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 101# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 102static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 103# endif
104#endif
134 105
135#define strpair(const) const, sizeof (const) - 1 106#ifdef __linux
107# include <time.h> /* for timespec */
108# include <syscall.h> /* for SYS_* */
109# ifdef SYS_clock_gettime
110# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
111# define CORO_CLOCK_MONOTONIC 1
112# define CORO_CLOCK_THREAD_CPUTIME_ID 3
113# endif
114#endif
136 115
137/* helper storage struct for Coro::AIO */ 116static double (*nvtime)(); /* so why doesn't it take void? */
138struct io_state 117static void (*u2time)(pTHX_ UV ret[2]);
139{
140 int errorno;
141 I32 laststype;
142 int laststatval;
143 Stat_t statcache;
144};
145 118
119/* we hijack an hopefully unused CV flag for our purposes */
120#define CVf_SLF 0x4000
121static OP *pp_slf (pTHX);
122static void slf_destroy (pTHX_ struct coro *coro);
123
124static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 125static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 126static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 127static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 128static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 129static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 130static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
131
132static AV *av_destroy; /* destruction queue */
133static SV *sv_manager; /* the manager coro */
134static SV *sv_idle; /* $Coro::idle */
152 135
153static GV *irsgv; /* $/ */ 136static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 137static GV *stdoutgv; /* *STDOUT */
155 138static SV *rv_diehook;
139static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 140static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 141
160/* async_pool helper stuff */ 142/* async_pool helper stuff */
161static SV *sv_pool_rss; 143static SV *sv_pool_rss;
162static SV *sv_pool_size; 144static SV *sv_pool_size;
145static SV *sv_async_pool_idle; /* description string */
163static AV *av_async_pool; 146static AV *av_async_pool; /* idle pool */
147static SV *sv_Coro; /* class string */
148static CV *cv_pool_handler;
149
150/* Coro::AnyEvent */
151static SV *sv_activity;
152
153/* enable processtime/realtime profiling */
154static char enable_times;
155typedef U32 coro_ts[2];
156static coro_ts time_real, time_cpu;
157static char times_valid;
164 158
165static struct coro_cctx *cctx_first; 159static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 160static int cctx_count, cctx_idle;
167 161
168enum { 162enum
163{
169 CC_MAPPED = 0x01, 164 CC_MAPPED = 0x01,
170 CC_NOREUSE = 0x02, /* throw this away after tracing */ 165 CC_NOREUSE = 0x02, /* throw this away after tracing */
171 CC_TRACE = 0x04, 166 CC_TRACE = 0x04,
172 CC_TRACE_SUB = 0x08, /* trace sub calls */ 167 CC_TRACE_SUB = 0x08, /* trace sub calls */
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 168 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 169 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 170};
176 171
177/* this is a structure representing a c-level coroutine */ 172/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 173typedef struct coro_cctx
174{
179 struct coro_cctx *next; 175 struct coro_cctx *next;
180 176
181 /* the stack */ 177 /* the stack */
182 void *sptr; 178 void *sptr;
183 size_t ssize; 179 size_t ssize;
184 180
185 /* cpu state */ 181 /* cpu state */
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 182 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
183#ifndef NDEBUG
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 184 JMPENV *idle_te; /* same as idle_sp, but for top_env */
185#endif
188 JMPENV *top_env; 186 JMPENV *top_env;
189 coro_context cctx; 187 coro_context cctx;
190 188
189 U32 gen;
191#if CORO_USE_VALGRIND 190#if CORO_USE_VALGRIND
192 int valgrind_id; 191 int valgrind_id;
193#endif 192#endif
194 unsigned char flags; 193 unsigned char flags;
195} coro_cctx; 194} coro_cctx;
196 195
196static coro_cctx *cctx_current; /* the currently running cctx */
197
198/*****************************************************************************/
199
200static MGVTBL coro_state_vtbl;
201
197enum { 202enum
203{
198 CF_RUNNING = 0x0001, /* coroutine is running */ 204 CF_RUNNING = 0x0001, /* coroutine is running */
199 CF_READY = 0x0002, /* coroutine is ready */ 205 CF_READY = 0x0002, /* coroutine is ready */
200 CF_NEW = 0x0004, /* has never been switched to */ 206 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 207 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
208 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
209 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
202}; 210};
203 211
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 212/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 213typedef struct
206 SV *defsv; 214{
207 AV *defav;
208 SV *errsv;
209 SV *irsgv;
210#define VAR(name,type) type name; 215 #define VARx(name,expr,type) type name;
211# include "state.h" 216 #include "state.h"
212#undef VAR
213} perl_slots; 217} perl_slots;
214 218
219/* how many context stack entries do we need for perl_slots */
215#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 220#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 221
217/* this is a structure representing a perl-level coroutine */ 222/* this is a structure representing a perl-level coroutine */
218struct coro { 223struct coro
224{
219 /* the c coroutine allocated to this perl coroutine, if any */ 225 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 226 coro_cctx *cctx;
221 227
222 /* process data */ 228 /* ready queue */
229 struct coro *next_ready;
230
231 /* state data */
232 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 233 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 234 perl_slots *slot; /* basically the saved sp */
225 235
236 CV *startcv; /* the CV to execute */
226 /* data associated with this coroutine (initial args) */ 237 AV *args; /* data associated with this coroutine (initial args) */
227 AV *args;
228 int refcnt;
229 int flags; /* CF_ flags */ 238 int flags; /* CF_ flags */
239 HV *hv; /* the perl hash associated with this coro, if any */
230 240
231 /* statistics */ 241 /* statistics */
232 int usecount; /* number of transfers to this coro */ 242 int usecount; /* number of transfers to this coro */
233 243
234 /* coro process data */ 244 /* coro process data */
235 int prio; 245 int prio;
236 SV *throw; 246 SV *except; /* exception to be thrown */
247 SV *rouse_cb; /* last rouse callback */
248 AV *on_destroy; /* callbacks or coros to notify on destroy */
249 AV *status; /* the exit status list */
237 250
238 /* async_pool */ 251 /* async_pool */
239 SV *saved_deffh; 252 SV *saved_deffh;
253 SV *invoke_cb;
254 AV *invoke_av;
255
256 /* on_enter/on_leave */
257 AV *on_enter;
258 AV *on_leave;
259
260 /* swap_sv */
261 AV *swap_sv;
262
263 /* times */
264 coro_ts t_cpu, t_real;
240 265
241 /* linked list */ 266 /* linked list */
242 struct coro *next, *prev; 267 struct coro *next, *prev;
243 HV *hv; /* the perl hash associated with this coro, if any */
244}; 268};
245 269
246typedef struct coro *Coro__State; 270typedef struct coro *Coro__State;
247typedef struct coro *Coro__State_or_hashref; 271typedef struct coro *Coro__State_or_hashref;
248 272
273/* the following variables are effectively part of the perl context */
274/* and get copied between struct coro and these variables */
275/* the main reason we don't support windows process emulation */
276static struct CoroSLF slf_frame; /* the current slf frame */
277
249/** Coro ********************************************************************/ 278/** Coro ********************************************************************/
250 279
251#define PRIO_MAX 3 280#define CORO_PRIO_MAX 3
252#define PRIO_HIGH 1 281#define CORO_PRIO_HIGH 1
253#define PRIO_NORMAL 0 282#define CORO_PRIO_NORMAL 0
254#define PRIO_LOW -1 283#define CORO_PRIO_LOW -1
255#define PRIO_IDLE -3 284#define CORO_PRIO_IDLE -3
256#define PRIO_MIN -4 285#define CORO_PRIO_MIN -4
257 286
258/* for Coro.pm */ 287/* for Coro.pm */
259static SV *coro_current; 288static SV *coro_current;
260static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 289static SV *coro_readyhook;
261static int coro_nready; 290static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
291static CV *cv_coro_run;
262static struct coro *coro_first; 292static struct coro *coro_first;
293#define coro_nready coroapi.nready
294
295/** JIT *********************************************************************/
296
297#if CORO_JIT
298 /* APPLE doesn't have HAVE_MMAP though */
299 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
300 #ifndef CORO_JIT_TYPE
301 #if __x86_64 && CORO_JIT_UNIXY
302 #define CORO_JIT_TYPE "amd64-unix"
303 #elif __i386 && CORO_JIT_UNIXY
304 #define CORO_JIT_TYPE "x86-unix"
305 #endif
306 #endif
307#endif
308
309#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
310 #undef CORO_JIT
311#endif
312
313#if CORO_JIT
314 typedef void (*load_save_perl_slots_type)(perl_slots *);
315 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
316#endif
317
318/** Coro::Select ************************************************************/
319
320static OP *(*coro_old_pp_sselect) (pTHX);
321static SV *coro_select_select;
322
323/* horrible hack, but if it works... */
324static OP *
325coro_pp_sselect (pTHX)
326{
327 dSP;
328 PUSHMARK (SP - 4); /* fake argument list */
329 XPUSHs (coro_select_select);
330 PUTBACK;
331
332 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
333 PL_op->op_flags |= OPf_STACKED;
334 PL_op->op_private = 0;
335 return PL_ppaddr [OP_ENTERSUB](aTHX);
336}
337
338/** time stuff **************************************************************/
339
340#ifdef HAS_GETTIMEOFDAY
341
342ecb_inline void
343coro_u2time (pTHX_ UV ret[2])
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 ret [0] = tv.tv_sec;
349 ret [1] = tv.tv_usec;
350}
351
352ecb_inline double
353coro_nvtime (void)
354{
355 struct timeval tv;
356 gettimeofday (&tv, 0);
357
358 return tv.tv_sec + tv.tv_usec * 1e-6;
359}
360
361ecb_inline void
362time_init (pTHX)
363{
364 nvtime = coro_nvtime;
365 u2time = coro_u2time;
366}
367
368#else
369
370ecb_inline void
371time_init (pTHX)
372{
373 SV **svp;
374
375 require_pv ("Time/HiRes.pm");
376
377 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
378
379 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
380 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
381
382 nvtime = INT2PTR (double (*)(), SvIV (*svp));
383
384 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
385 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
386}
387
388#endif
263 389
264/** lowlevel stuff **********************************************************/ 390/** lowlevel stuff **********************************************************/
265 391
266static SV * 392static SV * ecb_noinline
267coro_get_sv (const char *name, int create) 393coro_get_sv (pTHX_ const char *name, int create)
268{ 394{
269#if PERL_VERSION_ATLEAST (5,9,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
270 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 396 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
271 get_sv (name, create); 397 get_sv (name, create);
272#endif 398#endif
273 return get_sv (name, create); 399 return get_sv (name, create);
274} 400}
275 401
276static AV * 402static AV * ecb_noinline
277coro_get_av (const char *name, int create) 403coro_get_av (pTHX_ const char *name, int create)
278{ 404{
279#if PERL_VERSION_ATLEAST (5,9,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
280 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 406 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
281 get_av (name, create); 407 get_av (name, create);
282#endif 408#endif
283 return get_av (name, create); 409 return get_av (name, create);
284} 410}
285 411
286static HV * 412static HV * ecb_noinline
287coro_get_hv (const char *name, int create) 413coro_get_hv (pTHX_ const char *name, int create)
288{ 414{
289#if PERL_VERSION_ATLEAST (5,9,0) 415#if PERL_VERSION_ATLEAST (5,10,0)
290 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 416 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
291 get_hv (name, create); 417 get_hv (name, create);
292#endif 418#endif
293 return get_hv (name, create); 419 return get_hv (name, create);
294} 420}
295 421
296static AV * 422ecb_inline void
423coro_times_update (void)
424{
425#ifdef coro_clock_gettime
426 struct timespec ts;
427
428 ts.tv_sec = ts.tv_nsec = 0;
429 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
430 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
431
432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
434 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
435#else
436 dTHX;
437 UV tv[2];
438
439 u2time (aTHX_ tv);
440 time_real [0] = tv [0];
441 time_real [1] = tv [1] * 1000;
442#endif
443}
444
445ecb_inline void
446coro_times_add (struct coro *c)
447{
448 c->t_real [1] += time_real [1];
449 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
450 c->t_real [0] += time_real [0];
451
452 c->t_cpu [1] += time_cpu [1];
453 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
454 c->t_cpu [0] += time_cpu [0];
455}
456
457ecb_inline void
458coro_times_sub (struct coro *c)
459{
460 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
461 c->t_real [1] -= time_real [1];
462 c->t_real [0] -= time_real [0];
463
464 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
465 c->t_cpu [1] -= time_cpu [1];
466 c->t_cpu [0] -= time_cpu [0];
467}
468
469/*****************************************************************************/
470/* magic glue */
471
472#define CORO_MAGIC_type_cv 26
473#define CORO_MAGIC_type_state PERL_MAGIC_ext
474
475#define CORO_MAGIC_NN(sv, type) \
476 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
477 ? SvMAGIC (sv) \
478 : mg_find (sv, type))
479
480#define CORO_MAGIC(sv, type) \
481 (ecb_expect_true (SvMAGIC (sv)) \
482 ? CORO_MAGIC_NN (sv, type) \
483 : 0)
484
485#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
486#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
487
488ecb_inline MAGIC *
489SvSTATEhv_p (pTHX_ SV *coro)
490{
491 MAGIC *mg;
492
493 if (ecb_expect_true (
494 SvTYPE (coro) == SVt_PVHV
495 && (mg = CORO_MAGIC_state (coro))
496 && mg->mg_virtual == &coro_state_vtbl
497 ))
498 return mg;
499
500 return 0;
501}
502
503ecb_inline struct coro *
504SvSTATE_ (pTHX_ SV *coro)
505{
506 MAGIC *mg;
507
508 if (SvROK (coro))
509 coro = SvRV (coro);
510
511 mg = SvSTATEhv_p (aTHX_ coro);
512 if (!mg)
513 croak ("Coro::State object required");
514
515 return (struct coro *)mg->mg_ptr;
516}
517
518#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
519
520/* faster than SvSTATE, but expects a coroutine hv */
521#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
522#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
523
524/*****************************************************************************/
525/* padlist management and caching */
526
527ecb_inline AV *
297coro_clone_padlist (pTHX_ CV *cv) 528coro_derive_padlist (pTHX_ CV *cv)
298{ 529{
299 AV *padlist = CvPADLIST (cv); 530 AV *padlist = CvPADLIST (cv);
300 AV *newpadlist, *newpad; 531 AV *newpadlist, *newpad;
301 532
302 newpadlist = newAV (); 533 newpadlist = newAV ();
303 AvREAL_off (newpadlist); 534 AvREAL_off (newpadlist);
304#if PERL_VERSION_ATLEAST (5,9,0) 535#if PERL_VERSION_ATLEAST (5,10,0)
305 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 536 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
306#else 537#else
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 538 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
308#endif 539#endif
309 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 540 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
310 --AvFILLp (padlist); 541 --AvFILLp (padlist);
311 542
312 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 543 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
313 av_store (newpadlist, 1, (SV *)newpad); 544 av_store (newpadlist, 1, (SV *)newpad);
314 545
315 return newpadlist; 546 return newpadlist;
316} 547}
317 548
318static void 549ecb_inline void
319free_padlist (pTHX_ AV *padlist) 550free_padlist (pTHX_ AV *padlist)
320{ 551{
321 /* may be during global destruction */ 552 /* may be during global destruction */
322 if (SvREFCNT (padlist)) 553 if (!IN_DESTRUCT)
323 { 554 {
324 I32 i = AvFILLp (padlist); 555 I32 i = AvFILLp (padlist);
325 while (i >= 0) 556
557 while (i > 0) /* special-case index 0 */
326 { 558 {
327 SV **svp = av_fetch (padlist, i--, FALSE); 559 /* we try to be extra-careful here */
328 if (svp) 560 AV *av = (AV *)AvARRAY (padlist)[i--];
329 { 561 I32 j = AvFILLp (av);
330 SV *sv; 562
331 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 563 while (j >= 0)
564 SvREFCNT_dec (AvARRAY (av)[j--]);
565
566 AvFILLp (av) = -1;
332 SvREFCNT_dec (sv); 567 SvREFCNT_dec (av);
333
334 SvREFCNT_dec (*svp);
335 }
336 } 568 }
337 569
570 SvREFCNT_dec (AvARRAY (padlist)[0]);
571
572 AvFILLp (padlist) = -1;
338 SvREFCNT_dec ((SV*)padlist); 573 SvREFCNT_dec ((SV*)padlist);
339 } 574 }
340} 575}
341 576
342static int 577static int
343coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 578coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
344{ 579{
345 AV *padlist; 580 AV *padlist;
346 AV *av = (AV *)mg->mg_obj; 581 AV *av = (AV *)mg->mg_obj;
582
583 /* perl manages to free our internal AV and _then_ call us */
584 if (IN_DESTRUCT)
585 return 0;
347 586
348 /* casting is fun. */ 587 /* casting is fun. */
349 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 588 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
350 free_padlist (aTHX_ padlist); 589 free_padlist (aTHX_ padlist);
351 590
352 SvREFCNT_dec (av); 591 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
353 592
354 return 0; 593 return 0;
355} 594}
356 595
357#define PERL_MAGIC_coro PERL_MAGIC_ext 596static MGVTBL coro_cv_vtbl = {
358 597 0, 0, 0, 0,
359static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 598 coro_cv_free
360 599};
361#define CORO_MAGIC(cv) \
362 SvMAGIC (cv) \
363 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
364 ? SvMAGIC (cv) \
365 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
366 : 0
367
368static struct coro *
369SvSTATE_ (pTHX_ SV *coro)
370{
371 HV *stash;
372 MAGIC *mg;
373
374 if (SvROK (coro))
375 coro = SvRV (coro);
376
377 if (expect_false (SvTYPE (coro) != SVt_PVHV))
378 croak ("Coro::State object required");
379
380 stash = SvSTASH (coro);
381 if (expect_false (stash != coro_stash && stash != coro_state_stash))
382 {
383 /* very slow, but rare, check */
384 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385 croak ("Coro::State object required");
386 }
387
388 mg = CORO_MAGIC (coro);
389 return (struct coro *)mg->mg_ptr;
390}
391
392#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393 600
394/* the next two functions merely cache the padlists */ 601/* the next two functions merely cache the padlists */
395static void 602ecb_inline void
396get_padlist (pTHX_ CV *cv) 603get_padlist (pTHX_ CV *cv)
397{ 604{
398 MAGIC *mg = CORO_MAGIC (cv); 605 MAGIC *mg = CORO_MAGIC_cv (cv);
399 AV *av; 606 AV *av;
400 607
401 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 608 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
402 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 609 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
403 else 610 else
404 { 611 {
405#if CORO_PREFER_PERL_FUNCTIONS 612#if CORO_PREFER_PERL_FUNCTIONS
406 /* this is probably cleaner, but also slower? */ 613 /* this is probably cleaner? but also slower! */
614 /* in practise, it seems to be less stable */
407 CV *cp = Perl_cv_clone (cv); 615 CV *cp = Perl_cv_clone (aTHX_ cv);
408 CvPADLIST (cv) = CvPADLIST (cp); 616 CvPADLIST (cv) = CvPADLIST (cp);
409 CvPADLIST (cp) = 0; 617 CvPADLIST (cp) = 0;
410 SvREFCNT_dec (cp); 618 SvREFCNT_dec (cp);
411#else 619#else
412 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 620 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
413#endif 621#endif
414 } 622 }
415} 623}
416 624
417static void 625ecb_inline void
418put_padlist (pTHX_ CV *cv) 626put_padlist (pTHX_ CV *cv)
419{ 627{
420 MAGIC *mg = CORO_MAGIC (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
421 AV *av; 629 AV *av;
422 630
423 if (expect_false (!mg)) 631 if (ecb_expect_false (!mg))
424 { 632 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
425 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
426 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
427 mg->mg_virtual = &vtbl_coro;
428 mg->mg_obj = (SV *)newAV ();
429 }
430 633
431 av = (AV *)mg->mg_obj; 634 av = (AV *)mg->mg_obj;
432 635
433 if (expect_false (AvFILLp (av) >= AvMAX (av))) 636 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
434 av_extend (av, AvMAX (av) + 1); 637 av_extend (av, AvFILLp (av) + 1);
435 638
436 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 639 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
437} 640}
438 641
439/** load & save, init *******************************************************/ 642/** load & save, init *******************************************************/
643
644ecb_inline void
645swap_sv (SV *a, SV *b)
646{
647 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
648 SV tmp;
649
650 /* swap sv_any */
651 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
652
653 /* swap sv_flags */
654 SvFLAGS (&tmp) = SvFLAGS (a);
655 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
656 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
657
658#if PERL_VERSION_ATLEAST (5,10,0)
659 /* perl 5.10 and later complicates this _quite_ a bit, but it also
660 * is much faster, so no quarrels here. alternatively, we could
661 * sv_upgrade to avoid this.
662 */
663 {
664 /* swap sv_u */
665 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
666
667 /* if SvANY points to the head, we need to adjust the pointers,
668 * as the pointer for a still points to b, and maybe vice versa.
669 */
670 #define svany_in_head(type) \
671 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
672
673 if (svany_in_head (SvTYPE (a)))
674 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
675
676 if (svany_in_head (SvTYPE (b)))
677 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
678 }
679#endif
680}
681
682/* swap sv heads, at least logically */
683static void
684swap_svs (pTHX_ Coro__State c)
685{
686 int i;
687
688 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
689 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
690}
691
692#define SWAP_SVS(coro) \
693 if (ecb_expect_false ((coro)->swap_sv)) \
694 swap_svs (aTHX_ (coro))
695
696static void
697on_enterleave_call (pTHX_ SV *cb);
440 698
441static void 699static void
442load_perl (pTHX_ Coro__State c) 700load_perl (pTHX_ Coro__State c)
443{ 701{
444 perl_slots *slot = c->slot; 702 perl_slots *slot = c->slot;
445 c->slot = 0; 703 c->slot = 0;
446 704
447 PL_mainstack = c->mainstack; 705 PL_mainstack = c->mainstack;
448 706
449 GvSV (PL_defgv) = slot->defsv; 707#if CORO_JIT
450 GvAV (PL_defgv) = slot->defav; 708 load_perl_slots (slot);
451 GvSV (PL_errgv) = slot->errsv; 709#else
452 GvSV (irsgv) = slot->irsgv;
453
454 #define VAR(name,type) PL_ ## name = slot->name; 710 #define VARx(name,expr,type) expr = slot->name;
455 # include "state.h" 711 #include "state.h"
456 #undef VAR 712#endif
457 713
458 { 714 {
459 dSP; 715 dSP;
460 716
461 CV *cv; 717 CV *cv;
462 718
463 /* now do the ugly restore mess */ 719 /* now do the ugly restore mess */
464 while (expect_true (cv = (CV *)POPs)) 720 while (ecb_expect_true (cv = (CV *)POPs))
465 { 721 {
466 put_padlist (aTHX_ cv); /* mark this padlist as available */ 722 put_padlist (aTHX_ cv); /* mark this padlist as available */
467 CvDEPTH (cv) = PTR2IV (POPs); 723 CvDEPTH (cv) = PTR2IV (POPs);
468 CvPADLIST (cv) = (AV *)POPs; 724 CvPADLIST (cv) = (AV *)POPs;
469 } 725 }
470 726
471 PUTBACK; 727 PUTBACK;
472 } 728 }
729
730 slf_frame = c->slf_frame;
731 CORO_THROW = c->except;
732
733 if (ecb_expect_false (enable_times))
734 {
735 if (ecb_expect_false (!times_valid))
736 coro_times_update ();
737
738 coro_times_sub (c);
739 }
740
741 if (ecb_expect_false (c->on_enter))
742 {
743 int i;
744
745 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
746 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
747 }
748
749 SWAP_SVS (c);
473} 750}
474 751
475static void 752static void
476save_perl (pTHX_ Coro__State c) 753save_perl (pTHX_ Coro__State c)
477{ 754{
755 SWAP_SVS (c);
756
757 if (ecb_expect_false (c->on_leave))
758 {
759 int i;
760
761 for (i = AvFILLp (c->on_leave); i >= 0; --i)
762 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
763 }
764
765 times_valid = 0;
766
767 if (ecb_expect_false (enable_times))
768 {
769 coro_times_update (); times_valid = 1;
770 coro_times_add (c);
771 }
772
773 c->except = CORO_THROW;
774 c->slf_frame = slf_frame;
775
478 { 776 {
479 dSP; 777 dSP;
480 I32 cxix = cxstack_ix; 778 I32 cxix = cxstack_ix;
481 PERL_CONTEXT *ccstk = cxstack; 779 PERL_CONTEXT *ccstk = cxstack;
482 PERL_SI *top_si = PL_curstackinfo; 780 PERL_SI *top_si = PL_curstackinfo;
… …
488 786
489 XPUSHs (Nullsv); 787 XPUSHs (Nullsv);
490 /* this loop was inspired by pp_caller */ 788 /* this loop was inspired by pp_caller */
491 for (;;) 789 for (;;)
492 { 790 {
493 while (expect_true (cxix >= 0)) 791 while (ecb_expect_true (cxix >= 0))
494 { 792 {
495 PERL_CONTEXT *cx = &ccstk[cxix--]; 793 PERL_CONTEXT *cx = &ccstk[cxix--];
496 794
497 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 795 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
498 { 796 {
499 CV *cv = cx->blk_sub.cv; 797 CV *cv = cx->blk_sub.cv;
500 798
501 if (expect_true (CvDEPTH (cv))) 799 if (ecb_expect_true (CvDEPTH (cv)))
502 { 800 {
503 EXTEND (SP, 3); 801 EXTEND (SP, 3);
504 PUSHs ((SV *)CvPADLIST (cv)); 802 PUSHs ((SV *)CvPADLIST (cv));
505 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 803 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
506 PUSHs ((SV *)cv); 804 PUSHs ((SV *)cv);
507 805
508 CvDEPTH (cv) = 0; 806 CvDEPTH (cv) = 0;
509 get_padlist (aTHX_ cv); 807 get_padlist (aTHX_ cv);
510 } 808 }
511 } 809 }
512 } 810 }
513 811
514 if (expect_true (top_si->si_type == PERLSI_MAIN)) 812 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
515 break; 813 break;
516 814
517 top_si = top_si->si_prev; 815 top_si = top_si->si_prev;
518 ccstk = top_si->si_cxstack; 816 ccstk = top_si->si_cxstack;
519 cxix = top_si->si_cxix; 817 cxix = top_si->si_cxix;
… …
521 819
522 PUTBACK; 820 PUTBACK;
523 } 821 }
524 822
525 /* allocate some space on the context stack for our purposes */ 823 /* allocate some space on the context stack for our purposes */
824 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
526 { 825 {
527 /* we manually unroll here, as usually 2 slots is enough */ 826 unsigned int i;
528 int i; 827
529 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 for (i = 3; i < SLOT_COUNT; ++i) 828 for (i = 0; i < SLOT_COUNT; ++i)
533 CXINC; 829 CXINC;
534 830
535 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 831 cxstack_ix -= SLOT_COUNT; /* undo allocation */
536 } 832 }
537 833
538 c->mainstack = PL_mainstack; 834 c->mainstack = PL_mainstack;
539 835
540 { 836 {
541 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 837 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
542 838
543 slot->defav = GvAV (PL_defgv); 839#if CORO_JIT
544 slot->defsv = DEFSV; 840 save_perl_slots (slot);
545 slot->errsv = ERRSV; 841#else
546 slot->irsgv = GvSV (irsgv);
547
548 #define VAR(name,type) slot->name = PL_ ## name; 842 #define VARx(name,expr,type) slot->name = expr;
549 # include "state.h" 843 #include "state.h"
550 #undef VAR 844#endif
551 } 845 }
552} 846}
553 847
554/* 848/*
555 * allocate various perl stacks. This is an exact copy 849 * allocate various perl stacks. This is almost an exact copy
556 * of perl.c:init_stacks, except that it uses less memory 850 * of perl.c:init_stacks, except that it uses less memory
557 * on the (sometimes correct) assumption that coroutines do 851 * on the (sometimes correct) assumption that coroutines do
558 * not usually need a lot of stackspace. 852 * not usually need a lot of stackspace.
559 */ 853 */
560#if CORO_PREFER_PERL_FUNCTIONS 854#if CORO_PREFER_PERL_FUNCTIONS
561# define coro_init_stacks init_stacks 855# define coro_init_stacks(thx) init_stacks ()
562#else 856#else
563static void 857static void
564coro_init_stacks (pTHX) 858coro_init_stacks (pTHX)
565{ 859{
566 PL_curstackinfo = new_stackinfo(32, 8); 860 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
567 PL_curstackinfo->si_type = PERLSI_MAIN; 861 PL_curstackinfo->si_type = PERLSI_MAIN;
568 PL_curstack = PL_curstackinfo->si_stack; 862 PL_curstack = PL_curstackinfo->si_stack;
569 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 863 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
570 864
571 PL_stack_base = AvARRAY(PL_curstack); 865 PL_stack_base = AvARRAY(PL_curstack);
… …
586#endif 880#endif
587 881
588 New(54,PL_scopestack,8,I32); 882 New(54,PL_scopestack,8,I32);
589 PL_scopestack_ix = 0; 883 PL_scopestack_ix = 0;
590 PL_scopestack_max = 8; 884 PL_scopestack_max = 8;
885#if HAS_SCOPESTACK_NAME
886 New(54,PL_scopestack_name,8,const char*);
887#endif
591 888
592 New(54,PL_savestack,24,ANY); 889 New(54,PL_savestack,24,ANY);
593 PL_savestack_ix = 0; 890 PL_savestack_ix = 0;
594 PL_savestack_max = 24; 891 PL_savestack_max = 24;
595 892
596#if !PERL_VERSION_ATLEAST (5,9,0) 893#if !PERL_VERSION_ATLEAST (5,10,0)
597 New(54,PL_retstack,4,OP*); 894 New(54,PL_retstack,4,OP*);
598 PL_retstack_ix = 0; 895 PL_retstack_ix = 0;
599 PL_retstack_max = 4; 896 PL_retstack_max = 4;
600#endif 897#endif
601} 898}
… …
603 900
604/* 901/*
605 * destroy the stacks, the callchain etc... 902 * destroy the stacks, the callchain etc...
606 */ 903 */
607static void 904static void
608coro_destroy_stacks (pTHX) 905coro_destruct_stacks (pTHX)
609{ 906{
610 while (PL_curstackinfo->si_next) 907 while (PL_curstackinfo->si_next)
611 PL_curstackinfo = PL_curstackinfo->si_next; 908 PL_curstackinfo = PL_curstackinfo->si_next;
612 909
613 while (PL_curstackinfo) 910 while (PL_curstackinfo)
… …
623 } 920 }
624 921
625 Safefree (PL_tmps_stack); 922 Safefree (PL_tmps_stack);
626 Safefree (PL_markstack); 923 Safefree (PL_markstack);
627 Safefree (PL_scopestack); 924 Safefree (PL_scopestack);
925#if HAS_SCOPESTACK_NAME
926 Safefree (PL_scopestack_name);
927#endif
628 Safefree (PL_savestack); 928 Safefree (PL_savestack);
629#if !PERL_VERSION_ATLEAST (5,9,0) 929#if !PERL_VERSION_ATLEAST (5,10,0)
630 Safefree (PL_retstack); 930 Safefree (PL_retstack);
631#endif 931#endif
632} 932}
933
934#define CORO_RSS \
935 rss += sizeof (SYM (curstackinfo)); \
936 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
937 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
938 rss += SYM (tmps_max) * sizeof (SV *); \
939 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
940 rss += SYM (scopestack_max) * sizeof (I32); \
941 rss += SYM (savestack_max) * sizeof (ANY);
633 942
634static size_t 943static size_t
635coro_rss (pTHX_ struct coro *coro) 944coro_rss (pTHX_ struct coro *coro)
636{ 945{
637 size_t rss = sizeof (*coro); 946 size_t rss = sizeof (*coro);
638 947
639 if (coro->mainstack) 948 if (coro->mainstack)
640 { 949 {
641 perl_slots tmp_slot;
642 perl_slots *slot;
643
644 if (coro->flags & CF_RUNNING) 950 if (coro->flags & CF_RUNNING)
645 { 951 {
646 slot = &tmp_slot; 952 #define SYM(sym) PL_ ## sym
647 953 CORO_RSS;
648 #define VAR(name,type) slot->name = PL_ ## name;
649 # include "state.h"
650 #undef VAR 954 #undef SYM
651 } 955 }
652 else 956 else
653 slot = coro->slot; 957 {
654 958 #define SYM(sym) coro->slot->sym
655 rss += sizeof (slot->curstackinfo); 959 CORO_RSS;
656 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 960 #undef SYM
657 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 961 }
658 rss += slot->tmps_max * sizeof (SV *);
659 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660 rss += slot->scopestack_max * sizeof (I32);
661 rss += slot->savestack_max * sizeof (ANY);
662
663#if !PERL_VERSION_ATLEAST (5,9,0)
664 rss += slot->retstack_max * sizeof (OP *);
665#endif
666 } 962 }
667 963
668 return rss; 964 return rss;
669} 965}
670 966
671/** coroutine stack handling ************************************************/ 967/** coroutine stack handling ************************************************/
672 968
969static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
970static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
971static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
972
973/* apparently < 5.8.8 */
974#ifndef MgPV_nolen_const
975#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
976 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
977 (const char*)(mg)->mg_ptr)
978#endif
979
980/*
981 * This overrides the default magic get method of %SIG elements.
982 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
983 * and instead of trying to save and restore the hash elements (extremely slow),
984 * we just provide our own readback here.
985 */
986static int ecb_cold
987coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
988{
989 const char *s = MgPV_nolen_const (mg);
990
991 if (*s == '_')
992 {
993 SV **svp = 0;
994
995 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
996 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
997
998 if (svp)
999 {
1000 SV *ssv;
1001
1002 if (!*svp)
1003 ssv = &PL_sv_undef;
1004 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1005 ssv = sv_2mortal (newRV_inc (*svp));
1006 else
1007 ssv = *svp;
1008
1009 sv_setsv (sv, ssv);
1010 return 0;
1011 }
1012 }
1013
1014 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
1015}
1016
1017static int ecb_cold
1018coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
1019{
1020 const char *s = MgPV_nolen_const (mg);
1021
1022 if (*s == '_')
1023 {
1024 SV **svp = 0;
1025
1026 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1027 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1028
1029 if (svp)
1030 {
1031 SV *old = *svp;
1032 *svp = 0;
1033 SvREFCNT_dec (old);
1034 return 0;
1035 }
1036 }
1037
1038 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1039}
1040
1041static int ecb_cold
1042coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1043{
1044 const char *s = MgPV_nolen_const (mg);
1045
1046 if (*s == '_')
1047 {
1048 SV **svp = 0;
1049
1050 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1051 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1052
1053 if (svp)
1054 {
1055 SV *old = *svp;
1056 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1057 SvREFCNT_dec (old);
1058 return 0;
1059 }
1060 }
1061
1062 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1063}
1064
1065static void
1066prepare_nop (pTHX_ struct coro_transfer_args *ta)
1067{
1068 /* kind of mega-hacky, but works */
1069 ta->next = ta->prev = (struct coro *)ta;
1070}
1071
673static void 1072static int
1073slf_check_nop (pTHX_ struct CoroSLF *frame)
1074{
1075 return 0;
1076}
1077
1078static int
1079slf_check_repeat (pTHX_ struct CoroSLF *frame)
1080{
1081 return 1;
1082}
1083
1084static UNOP init_perl_op;
1085
1086ecb_noinline static void /* noinline to keep it out of the transfer fast path */
674coro_setup (pTHX_ struct coro *coro) 1087init_perl (pTHX_ struct coro *coro)
675{ 1088{
676 /* 1089 /*
677 * emulate part of the perl startup here. 1090 * emulate part of the perl startup here.
678 */ 1091 */
679 coro_init_stacks (aTHX); 1092 coro_init_stacks (aTHX);
680 1093
681 PL_runops = RUNOPS_DEFAULT; 1094 PL_runops = RUNOPS_DEFAULT;
682 PL_curcop = &PL_compiling; 1095 PL_curcop = &PL_compiling;
683 PL_in_eval = EVAL_NULL; 1096 PL_in_eval = EVAL_NULL;
684 PL_comppad = 0; 1097 PL_comppad = 0;
1098 PL_comppad_name = 0;
1099 PL_comppad_name_fill = 0;
1100 PL_comppad_name_floor = 0;
685 PL_curpm = 0; 1101 PL_curpm = 0;
686 PL_curpad = 0; 1102 PL_curpad = 0;
687 PL_localizing = 0; 1103 PL_localizing = 0;
688 PL_dirty = 0;
689 PL_restartop = 0; 1104 PL_restartop = 0;
690 SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 1105#if PERL_VERSION_ATLEAST (5,10,0)
691 SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 1106 PL_parser = 0;
1107#endif
1108 PL_hints = 0;
1109
1110 /* recreate the die/warn hooks */
1111 PL_diehook = SvREFCNT_inc (rv_diehook);
1112 PL_warnhook = SvREFCNT_inc (rv_warnhook);
692 1113
693 GvSV (PL_defgv) = newSV (0); 1114 GvSV (PL_defgv) = newSV (0);
694 GvAV (PL_defgv) = coro->args; coro->args = 0; 1115 GvAV (PL_defgv) = coro->args; coro->args = 0;
695 GvSV (PL_errgv) = newSV (0); 1116 GvSV (PL_errgv) = newSV (0);
696 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1117 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1118 GvHV (PL_hintgv) = 0;
697 PL_rs = newSVsv (GvSV (irsgv)); 1119 PL_rs = newSVsv (GvSV (irsgv));
698 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 1120 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
699 1121
700 { 1122 {
701 dSP; 1123 dSP;
702 LOGOP myop; 1124 UNOP myop;
703 1125
704 Zero (&myop, 1, LOGOP); 1126 Zero (&myop, 1, UNOP);
705 myop.op_next = Nullop; 1127 myop.op_next = Nullop;
1128 myop.op_type = OP_ENTERSUB;
706 myop.op_flags = OPf_WANT_VOID; 1129 myop.op_flags = OPf_WANT_VOID;
707 1130
708 PUSHMARK (SP); 1131 PUSHMARK (SP);
709 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1132 PUSHs ((SV *)coro->startcv);
710 PUTBACK; 1133 PUTBACK;
711 PL_op = (OP *)&myop; 1134 PL_op = (OP *)&myop;
712 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1135 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
713 SPAGAIN;
714 } 1136 }
715 1137
716 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 1138 /* this newly created coroutine might be run on an existing cctx which most
717} 1139 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1140 */
1141 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1142 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1143 slf_frame.destroy = 0;
718 1144
1145 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1146 init_perl_op.op_next = PL_op;
1147 init_perl_op.op_type = OP_ENTERSUB;
1148 init_perl_op.op_ppaddr = pp_slf;
1149 /* no flags etc. required, as an init function won't be called */
1150
1151 PL_op = (OP *)&init_perl_op;
1152
1153 /* copy throw, in case it was set before init_perl */
1154 CORO_THROW = coro->except;
1155
1156 SWAP_SVS (coro);
1157
1158 if (ecb_expect_false (enable_times))
1159 {
1160 coro_times_update ();
1161 coro_times_sub (coro);
1162 }
1163}
1164
719static void 1165static void
720coro_destroy (pTHX_ struct coro *coro) 1166coro_unwind_stacks (pTHX)
721{ 1167{
722 if (!IN_DESTRUCT) 1168 if (!IN_DESTRUCT)
723 { 1169 {
724 /* restore all saved variables and stuff */ 1170 /* restore all saved variables and stuff */
725 LEAVE_SCOPE (0); 1171 LEAVE_SCOPE (0);
… …
733 POPSTACK_TO (PL_mainstack); 1179 POPSTACK_TO (PL_mainstack);
734 1180
735 /* unwind main stack */ 1181 /* unwind main stack */
736 dounwind (-1); 1182 dounwind (-1);
737 } 1183 }
1184}
738 1185
739 SvREFCNT_dec (GvSV (PL_defgv)); 1186static void
740 SvREFCNT_dec (GvAV (PL_defgv)); 1187destroy_perl (pTHX_ struct coro *coro)
741 SvREFCNT_dec (GvSV (PL_errgv)); 1188{
742 SvREFCNT_dec (PL_defoutgv); 1189 SV *svf [9];
743 SvREFCNT_dec (PL_rs);
744 SvREFCNT_dec (GvSV (irsgv));
745 1190
746 SvREFCNT_dec (PL_diehook);
747 SvREFCNT_dec (PL_warnhook);
748 1191 {
1192 SV *old_current = SvRV (coro_current);
1193 struct coro *current = SvSTATE (old_current);
1194
1195 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1196
1197 save_perl (aTHX_ current);
1198
1199 /* this will cause transfer_check to croak on block*/
1200 SvRV_set (coro_current, (SV *)coro->hv);
1201
1202 load_perl (aTHX_ coro);
1203
1204 coro_unwind_stacks (aTHX);
1205
1206 /* restore swapped sv's */
1207 SWAP_SVS (coro);
1208
1209 coro_destruct_stacks (aTHX);
1210
1211 /* now save some sv's to be free'd later */
1212 svf [0] = GvSV (PL_defgv);
1213 svf [1] = (SV *)GvAV (PL_defgv);
1214 svf [2] = GvSV (PL_errgv);
1215 svf [3] = (SV *)PL_defoutgv;
1216 svf [4] = PL_rs;
1217 svf [5] = GvSV (irsgv);
1218 svf [6] = (SV *)GvHV (PL_hintgv);
1219 svf [7] = PL_diehook;
1220 svf [8] = PL_warnhook;
1221 assert (9 == sizeof (svf) / sizeof (*svf));
1222
1223 SvRV_set (coro_current, old_current);
1224
1225 load_perl (aTHX_ current);
1226 }
1227
1228 {
1229 unsigned int i;
1230
1231 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1232 SvREFCNT_dec (svf [i]);
1233
749 SvREFCNT_dec (coro->saved_deffh); 1234 SvREFCNT_dec (coro->saved_deffh);
750 SvREFCNT_dec (coro->throw); 1235 SvREFCNT_dec (coro->rouse_cb);
751 1236 SvREFCNT_dec (coro->invoke_cb);
752 coro_destroy_stacks (aTHX); 1237 SvREFCNT_dec (coro->invoke_av);
1238 }
753} 1239}
754 1240
755static void 1241ecb_inline void
756free_coro_mortal (pTHX) 1242free_coro_mortal (pTHX)
757{ 1243{
758 if (expect_true (coro_mortal)) 1244 if (ecb_expect_true (coro_mortal))
759 { 1245 {
760 SvREFCNT_dec (coro_mortal); 1246 SvREFCNT_dec ((SV *)coro_mortal);
761 coro_mortal = 0; 1247 coro_mortal = 0;
762 } 1248 }
763} 1249}
764 1250
765static int 1251static int
766runops_trace (pTHX) 1252runops_trace (pTHX)
767{ 1253{
768 COP *oldcop = 0; 1254 COP *oldcop = 0;
769 int oldcxix = -2; 1255 int oldcxix = -2;
770 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
771 coro_cctx *cctx = coro->cctx;
772 1256
773 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1257 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
774 { 1258 {
775 PERL_ASYNC_CHECK (); 1259 PERL_ASYNC_CHECK ();
776 1260
777 if (cctx->flags & CC_TRACE_ALL) 1261 if (cctx_current->flags & CC_TRACE_ALL)
778 { 1262 {
779 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1263 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
780 { 1264 {
781 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1265 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
782 SV **bot, **top; 1266 SV **bot, **top;
783 AV *av = newAV (); /* return values */ 1267 AV *av = newAV (); /* return values */
784 SV **cb; 1268 SV **cb;
… …
794 : cx->blk_gimme == G_SCALAR ? bot + 1 1278 : cx->blk_gimme == G_SCALAR ? bot + 1
795 : bot; 1279 : bot;
796 1280
797 av_extend (av, top - bot); 1281 av_extend (av, top - bot);
798 while (bot < top) 1282 while (bot < top)
799 av_push (av, SvREFCNT_inc (*bot++)); 1283 av_push (av, SvREFCNT_inc_NN (*bot++));
800 1284
801 PL_runops = RUNOPS_DEFAULT; 1285 PL_runops = RUNOPS_DEFAULT;
802 ENTER; 1286 ENTER;
803 SAVETMPS; 1287 SAVETMPS;
804 EXTEND (SP, 3); 1288 EXTEND (SP, 3);
805 PUSHMARK (SP); 1289 PUSHMARK (SP);
806 PUSHs (&PL_sv_no); 1290 PUSHs (&PL_sv_no);
807 PUSHs (fullname); 1291 PUSHs (fullname);
808 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1292 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809 PUTBACK; 1293 PUTBACK;
810 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1294 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
811 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1295 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
812 SPAGAIN; 1296 SPAGAIN;
813 FREETMPS; 1297 FREETMPS;
814 LEAVE; 1298 LEAVE;
815 PL_runops = runops_trace; 1299 PL_runops = runops_trace;
… …
821 1305
822 if (PL_curcop != &PL_compiling) 1306 if (PL_curcop != &PL_compiling)
823 { 1307 {
824 SV **cb; 1308 SV **cb;
825 1309
826 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1310 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
827 { 1311 {
828 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1312 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
829 1313
830 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1314 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
831 { 1315 {
832 runops_proc_t old_runops = PL_runops;
833 dSP; 1316 dSP;
834 GV *gv = CvGV (cx->blk_sub.cv); 1317 GV *gv = CvGV (cx->blk_sub.cv);
835 SV *fullname = sv_2mortal (newSV (0)); 1318 SV *fullname = sv_2mortal (newSV (0));
836 1319
837 if (isGV (gv)) 1320 if (isGV (gv))
… …
842 SAVETMPS; 1325 SAVETMPS;
843 EXTEND (SP, 3); 1326 EXTEND (SP, 3);
844 PUSHMARK (SP); 1327 PUSHMARK (SP);
845 PUSHs (&PL_sv_yes); 1328 PUSHs (&PL_sv_yes);
846 PUSHs (fullname); 1329 PUSHs (fullname);
847 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1330 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
848 PUTBACK; 1331 PUTBACK;
849 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1332 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
850 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1333 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
851 SPAGAIN; 1334 SPAGAIN;
852 FREETMPS; 1335 FREETMPS;
853 LEAVE; 1336 LEAVE;
854 PL_runops = runops_trace; 1337 PL_runops = runops_trace;
855 } 1338 }
856 1339
857 oldcxix = cxstack_ix; 1340 oldcxix = cxstack_ix;
858 } 1341 }
859 1342
860 if (cctx->flags & CC_TRACE_LINE) 1343 if (cctx_current->flags & CC_TRACE_LINE)
861 { 1344 {
862 dSP; 1345 dSP;
863 1346
864 PL_runops = RUNOPS_DEFAULT; 1347 PL_runops = RUNOPS_DEFAULT;
865 ENTER; 1348 ENTER;
… …
868 PL_runops = RUNOPS_DEFAULT; 1351 PL_runops = RUNOPS_DEFAULT;
869 PUSHMARK (SP); 1352 PUSHMARK (SP);
870 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1353 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
871 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1354 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
872 PUTBACK; 1355 PUTBACK;
873 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1356 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
874 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1357 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
875 SPAGAIN; 1358 SPAGAIN;
876 FREETMPS; 1359 FREETMPS;
877 LEAVE; 1360 LEAVE;
878 PL_runops = runops_trace; 1361 PL_runops = runops_trace;
… …
884 1367
885 TAINT_NOT; 1368 TAINT_NOT;
886 return 0; 1369 return 0;
887} 1370}
888 1371
889/* inject a fake call to Coro::State::_cctx_init into the execution */ 1372static struct CoroSLF cctx_ssl_frame;
890/* _cctx_init should be careful, as it could be called at almost any time */
891/* during execution of a perl program */
892static void NOINLINE
893prepare_cctx (pTHX_ coro_cctx *cctx)
894{
895 dSP;
896 LOGOP myop;
897 1373
1374static void
1375slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1376{
1377 ta->prev = 0;
1378}
1379
1380static int
1381slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1382{
1383 *frame = cctx_ssl_frame;
1384
1385 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1386}
1387
1388/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1389static void ecb_noinline
1390cctx_prepare (pTHX)
1391{
898 PL_top_env = &PL_start_env; 1392 PL_top_env = &PL_start_env;
899 1393
900 if (cctx->flags & CC_TRACE) 1394 if (cctx_current->flags & CC_TRACE)
901 PL_runops = runops_trace; 1395 PL_runops = runops_trace;
902 1396
903 Zero (&myop, 1, LOGOP); 1397 /* we already must be executing an SLF op, there is no other valid way
904 myop.op_next = PL_op; 1398 * that can lead to creation of a new cctx */
905 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1399 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1400 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
906 1401
907 PUSHMARK (SP); 1402 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
908 EXTEND (SP, 2); 1403 cctx_ssl_frame = slf_frame;
909 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1404
910 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1405 slf_frame.prepare = slf_prepare_set_stacklevel;
911 PUTBACK; 1406 slf_frame.check = slf_check_set_stacklevel;
912 PL_op = (OP *)&myop; 1407}
913 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1408
914 SPAGAIN; 1409/* the tail of transfer: execute stuff we can only do after a transfer */
1410ecb_inline void
1411transfer_tail (pTHX)
1412{
1413 free_coro_mortal (aTHX);
1414}
1415
1416/* try to exit the same way perl's main function would do */
1417/* we do not bother resetting the environment or other things *7
1418/* that are not, uhm, essential */
1419/* this obviously also doesn't work when perl is embedded */
1420static void ecb_noinline ecb_cold
1421perlish_exit (pTHX)
1422{
1423 int exitstatus = perl_destruct (PL_curinterp);
1424 perl_free (PL_curinterp);
1425 exit (exitstatus);
915} 1426}
916 1427
917/* 1428/*
918 * this is a _very_ stripped down perl interpreter ;) 1429 * this is a _very_ stripped down perl interpreter ;)
919 */ 1430 */
920static void 1431static void
921coro_run (void *arg) 1432cctx_run (void *arg)
922{ 1433{
1434#ifdef USE_ITHREADS
1435# if CORO_PTHREAD
1436 PERL_SET_CONTEXT (coro_thx);
1437# endif
1438#endif
1439 {
923 dTHX; 1440 dTHX;
924 1441
925 /* coro_run is the alternative tail of transfer(), so unlock here. */ 1442 /* normally we would need to skip the entersub here */
926 UNLOCK; 1443 /* not doing so will re-execute it, which is exactly what we want */
927
928 /* we now skip the entersub that lead to transfer() */
929 PL_op = PL_op->op_next; 1444 /* PL_nop = PL_nop->op_next */
930 1445
931 /* inject a fake subroutine call to cctx_init */ 1446 /* inject a fake subroutine call to cctx_init */
932 prepare_cctx (aTHX_ (coro_cctx *)arg); 1447 cctx_prepare (aTHX);
933 1448
1449 /* cctx_run is the alternative tail of transfer() */
1450 transfer_tail (aTHX);
1451
934 /* somebody or something will hit me for both perl_run and PL_restartop */ 1452 /* somebody or something will hit me for both perl_run and PL_restartop */
935 PL_restartop = PL_op; 1453 PL_restartop = PL_op;
936 perl_run (PL_curinterp); 1454 perl_run (PL_curinterp);
937
938 /* 1455 /*
1456 * Unfortunately, there is no way to get at the return values of the
1457 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1458 * runtime errors here, as this is just a random interpreter, not a thread.
1459 */
1460
1461 /*
939 * If perl-run returns we assume exit() was being called or the coro 1462 * If perl-run returns we assume exit() was being called or the coro
940 * fell off the end, which seems to be the only valid (non-bug) 1463 * fell off the end, which seems to be the only valid (non-bug)
941 * reason for perl_run to return. We try to exit by jumping to the 1464 * reason for perl_run to return. We try to mimic whatever perl is normally
942 * bootstrap-time "top" top_env, as we cannot restore the "main" 1465 * doing in that case. YMMV.
943 * coroutine as Coro has no such concept
944 */ 1466 */
945 PL_top_env = main_top_env; 1467 perlish_exit (aTHX);
946 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1468 }
947} 1469}
948 1470
949static coro_cctx * 1471static coro_cctx *
950cctx_new () 1472cctx_new (void)
951{ 1473{
952 coro_cctx *cctx; 1474 coro_cctx *cctx;
1475
1476 ++cctx_count;
1477 New (0, cctx, 1, coro_cctx);
1478
1479 cctx->gen = cctx_gen;
1480 cctx->flags = 0;
1481 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1482
1483 return cctx;
1484}
1485
1486/* create a new cctx only suitable as source */
1487static coro_cctx *
1488cctx_new_empty (void)
1489{
1490 coro_cctx *cctx = cctx_new ();
1491
1492 cctx->sptr = 0;
1493 coro_create (&cctx->cctx, 0, 0, 0, 0);
1494
1495 return cctx;
1496}
1497
1498/* create a new cctx suitable as destination/running a perl interpreter */
1499static coro_cctx *
1500cctx_new_run (void)
1501{
1502 coro_cctx *cctx = cctx_new ();
953 void *stack_start; 1503 void *stack_start;
954 size_t stack_size; 1504 size_t stack_size;
955 1505
956 ++cctx_count;
957
958 Newz (0, cctx, 1, coro_cctx);
959
960#if HAVE_MMAP 1506#if HAVE_MMAP
961
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1507 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1508 /* mmap supposedly does allocate-on-write for us */
964 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1509 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
965 1510
966 if (cctx->sptr != (void *)-1) 1511 if (cctx->sptr != (void *)-1)
967 { 1512 {
968# if CORO_STACKGUARD 1513 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1514 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1515 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1516 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1517 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1518 cctx->flags |= CC_MAPPED;
974 } 1519 }
975 else 1520 else
976#endif 1521#endif
977 { 1522 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1523 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1524 New (0, cctx->sptr, cctx_stacksize, long);
980 1525
981 if (!cctx->sptr) 1526 if (!cctx->sptr)
982 { 1527 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1528 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1529 _exit (EXIT_FAILURE);
985 } 1530 }
986 1531
987 stack_start = cctx->sptr; 1532 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1533 stack_size = cctx->ssize;
989 } 1534 }
990 1535
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1536 #if CORO_USE_VALGRIND
1537 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1538 #endif
1539
992 coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size); 1540 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1541
994 return cctx; 1542 return cctx;
995} 1543}
996 1544
997static void 1545static void
998cctx_destroy (coro_cctx *cctx) 1546cctx_destroy (coro_cctx *cctx)
999{ 1547{
1000 if (!cctx) 1548 if (!cctx)
1001 return; 1549 return;
1002 1550
1551 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1552
1003 --cctx_count; 1553 --cctx_count;
1554 coro_destroy (&cctx->cctx);
1004 1555
1556 /* coro_transfer creates new, empty cctx's */
1557 if (cctx->sptr)
1558 {
1005#if CORO_USE_VALGRIND 1559 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1560 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007#endif 1561 #endif
1008 1562
1009#if HAVE_MMAP 1563#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED) 1564 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize); 1565 munmap (cctx->sptr, cctx->ssize);
1012 else 1566 else
1013#endif 1567#endif
1014 Safefree (cctx->sptr); 1568 Safefree (cctx->sptr);
1569 }
1015 1570
1016 Safefree (cctx); 1571 Safefree (cctx);
1017} 1572}
1018 1573
1019/* wether this cctx should be destructed */ 1574/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1575#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1576
1022static coro_cctx * 1577static coro_cctx *
1023cctx_get (pTHX) 1578cctx_get (pTHX)
1024{ 1579{
1025 while (expect_true (cctx_first)) 1580 while (ecb_expect_true (cctx_first))
1026 { 1581 {
1027 coro_cctx *cctx = cctx_first; 1582 coro_cctx *cctx = cctx_first;
1028 cctx_first = cctx->next; 1583 cctx_first = cctx->next;
1029 --cctx_idle; 1584 --cctx_idle;
1030 1585
1031 if (expect_true (!CCTX_EXPIRED (cctx))) 1586 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1032 return cctx; 1587 return cctx;
1033 1588
1034 cctx_destroy (cctx); 1589 cctx_destroy (cctx);
1035 } 1590 }
1036 1591
1037 return cctx_new (); 1592 return cctx_new_run ();
1038} 1593}
1039 1594
1040static void 1595static void
1041cctx_put (coro_cctx *cctx) 1596cctx_put (coro_cctx *cctx)
1042{ 1597{
1598 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1599
1043 /* free another cctx if overlimit */ 1600 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1601 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1045 { 1602 {
1046 coro_cctx *first = cctx_first; 1603 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1604 cctx_first = first->next;
1048 --cctx_idle; 1605 --cctx_idle;
1049 1606
… …
1058/** coroutine switching *****************************************************/ 1615/** coroutine switching *****************************************************/
1059 1616
1060static void 1617static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1618transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1619{
1620 /* TODO: throwing up here is considered harmful */
1621
1063 if (expect_true (prev != next)) 1622 if (ecb_expect_true (prev != next))
1064 { 1623 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1624 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1066 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1625 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1067 1626
1068 if (expect_false (next->flags & CF_RUNNING)) 1627 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1069 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070
1071 if (expect_false (next->flags & CF_DESTROYED))
1072 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1628 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1073 1629
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1630#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1631 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1079#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported"); 1632 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1633#endif
1082 } 1634 }
1083} 1635}
1084 1636
1085/* always use the TRANSFER macro */ 1637/* always use the TRANSFER macro */
1086static void NOINLINE 1638static void ecb_noinline /* noinline so we have a fixed stackframe */
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1639transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1640{
1089 dSTACKLEVEL; 1641 dSTACKLEVEL;
1090 1642
1091 /* sometimes transfer is only called to set idle_sp */ 1643 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1644 if (ecb_expect_false (!prev))
1093 { 1645 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1646 cctx_current->idle_sp = STACKLEVEL;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1647 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1648 }
1097 else if (expect_true (prev != next)) 1649 else if (ecb_expect_true (prev != next))
1098 { 1650 {
1099 coro_cctx *prev__cctx; 1651 coro_cctx *cctx_prev;
1100 1652
1101 if (expect_false (prev->flags & CF_NEW)) 1653 if (ecb_expect_false (prev->flags & CF_NEW))
1102 { 1654 {
1103 /* create a new empty context */ 1655 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx);
1105 prev->flags &= ~CF_NEW; 1656 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1657 prev->flags |= CF_RUNNING;
1107 } 1658 }
1108 1659
1109 prev->flags &= ~CF_RUNNING; 1660 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1661 next->flags |= CF_RUNNING;
1111 1662
1112 LOCK; 1663 /* first get rid of the old state */
1664 save_perl (aTHX_ prev);
1113 1665
1114 if (expect_false (next->flags & CF_NEW)) 1666 if (ecb_expect_false (next->flags & CF_NEW))
1115 { 1667 {
1116 /* need to start coroutine */ 1668 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1669 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1670 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1671 init_perl (aTHX_ next);
1122 } 1672 }
1123 else 1673 else
1674 load_perl (aTHX_ next);
1675
1676 /* possibly untie and reuse the cctx */
1677 if (ecb_expect_true (
1678 cctx_current->idle_sp == STACKLEVEL
1679 && !(cctx_current->flags & CC_TRACE)
1680 && !force_cctx
1681 ))
1124 { 1682 {
1125 /* coroutine already started */ 1683 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1126 save_perl (aTHX_ prev); 1684 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1127 load_perl (aTHX_ next); 1685
1686 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1687 /* without this the next cctx_get might destroy the running cctx while still in use */
1688 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1689 if (ecb_expect_true (!next->cctx))
1690 next->cctx = cctx_get (aTHX);
1691
1692 cctx_put (cctx_current);
1128 } 1693 }
1694 else
1695 prev->cctx = cctx_current;
1129 1696
1130 prev__cctx = prev->cctx; 1697 ++next->usecount;
1131 1698
1132 /* possibly "free" the cctx */ 1699 cctx_prev = cctx_current;
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1700 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1701
1702 next->cctx = 0;
1703
1704 if (ecb_expect_false (cctx_prev != cctx_current))
1134 { 1705 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1706 cctx_prev->top_env = PL_top_env;
1136 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1707 PL_top_env = cctx_current->top_env;
1137 1708 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1138 prev->cctx = 0;
1139
1140 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1141 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1142 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1143 next->cctx = cctx_get (aTHX);
1144
1145 cctx_put (prev__cctx);
1146 } 1709 }
1147 1710
1148 ++next->usecount; 1711 transfer_tail (aTHX);
1149
1150 if (expect_true (!next->cctx))
1151 next->cctx = cctx_get (aTHX);
1152
1153 if (expect_false (prev__cctx != next->cctx))
1154 {
1155 prev__cctx->top_env = PL_top_env;
1156 PL_top_env = next->cctx->top_env;
1157 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1158 }
1159
1160 free_coro_mortal (aTHX);
1161 UNLOCK;
1162
1163 if (expect_false (prev->throw || next->throw))
1164 {
1165 struct coro *coro = SvSTATE (coro_current);
1166
1167 if (coro->throw)
1168 {
1169 SV *exception = coro->throw;
1170 coro->throw = 0;
1171 sv_setsv (ERRSV, exception);
1172 croak (0);
1173 }
1174 }
1175 } 1712 }
1176} 1713}
1177 1714
1178struct transfer_args
1179{
1180 struct coro *prev, *next;
1181};
1182
1183#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1715#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1184#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1716#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1185 1717
1186/** high level stuff ********************************************************/ 1718/** high level stuff ********************************************************/
1187 1719
1720/* this function is actually Coro, not Coro::State, but we call it from here */
1721/* because it is convenient - but it hasn't been declared yet for that reason */
1188static int 1722static void
1723coro_call_on_destroy (pTHX_ struct coro *coro);
1724
1725static void
1189coro_state_destroy (pTHX_ struct coro *coro) 1726coro_state_destroy (pTHX_ struct coro *coro)
1190{ 1727{
1191 if (coro->flags & CF_DESTROYED) 1728 if (coro->flags & CF_ZOMBIE)
1192 return 0; 1729 return;
1193 1730
1731 slf_destroy (aTHX_ coro);
1732
1194 coro->flags |= CF_DESTROYED; 1733 coro->flags |= CF_ZOMBIE;
1195 1734
1196 if (coro->flags & CF_READY) 1735 if (coro->flags & CF_READY)
1197 { 1736 {
1198 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1737 /* reduce nready, as destroying a ready coro effectively unreadies it */
1199 /* alternative: look through all ready queues and remove the coro */ 1738 /* alternative: look through all ready queues and remove the coro */
1200 LOCK;
1201 --coro_nready; 1739 --coro_nready;
1202 UNLOCK;
1203 } 1740 }
1204 else 1741 else
1205 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1742 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1206
1207 if (coro->mainstack && coro->mainstack != main_mainstack)
1208 {
1209 struct coro temp;
1210
1211 if (coro->flags & CF_RUNNING)
1212 croak ("FATAL: tried to destroy currently running coroutine");
1213
1214 save_perl (aTHX_ &temp);
1215 load_perl (aTHX_ coro);
1216
1217 coro_destroy (aTHX_ coro);
1218
1219 load_perl (aTHX_ &temp);
1220
1221 coro->slot = 0;
1222 }
1223
1224 cctx_destroy (coro->cctx);
1225 SvREFCNT_dec (coro->args);
1226 1743
1227 if (coro->next) coro->next->prev = coro->prev; 1744 if (coro->next) coro->next->prev = coro->prev;
1228 if (coro->prev) coro->prev->next = coro->next; 1745 if (coro->prev) coro->prev->next = coro->next;
1229 if (coro == coro_first) coro_first = coro->next; 1746 if (coro == coro_first) coro_first = coro->next;
1230 1747
1231 return 1; 1748 if (coro->mainstack
1749 && coro->mainstack != main_mainstack
1750 && coro->slot
1751 && !PL_dirty)
1752 destroy_perl (aTHX_ coro);
1753
1754 cctx_destroy (coro->cctx);
1755 SvREFCNT_dec (coro->startcv);
1756 SvREFCNT_dec (coro->args);
1757 SvREFCNT_dec (coro->swap_sv);
1758 SvREFCNT_dec (CORO_THROW);
1759
1760 coro_call_on_destroy (aTHX_ coro);
1761
1762 /* more destruction mayhem in coro_state_free */
1232} 1763}
1233 1764
1234static int 1765static int
1235coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1766coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1236{ 1767{
1237 struct coro *coro = (struct coro *)mg->mg_ptr; 1768 struct coro *coro = (struct coro *)mg->mg_ptr;
1238 mg->mg_ptr = 0; 1769 mg->mg_ptr = 0;
1239 1770
1240 coro->hv = 0;
1241
1242 if (--coro->refcnt < 0)
1243 {
1244 coro_state_destroy (aTHX_ coro); 1771 coro_state_destroy (aTHX_ coro);
1772 SvREFCNT_dec (coro->on_destroy);
1773 SvREFCNT_dec (coro->status);
1774
1245 Safefree (coro); 1775 Safefree (coro);
1246 }
1247 1776
1248 return 0; 1777 return 0;
1249} 1778}
1250 1779
1251static int 1780static int ecb_cold
1252coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1781coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1253{ 1782{
1254 struct coro *coro = (struct coro *)mg->mg_ptr; 1783 /* called when perl clones the current process the slow way (windows process emulation) */
1255 1784 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1256 ++coro->refcnt; 1785 mg->mg_ptr = 0;
1786 mg->mg_virtual = 0;
1257 1787
1258 return 0; 1788 return 0;
1259} 1789}
1260 1790
1261static MGVTBL coro_state_vtbl = { 1791static MGVTBL coro_state_vtbl = {
… …
1268# define MGf_DUP 0 1798# define MGf_DUP 0
1269#endif 1799#endif
1270}; 1800};
1271 1801
1272static void 1802static void
1273prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1803prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1274{ 1804{
1275 ta->prev = SvSTATE (prev_sv); 1805 ta->prev = SvSTATE (prev_sv);
1276 ta->next = SvSTATE (next_sv); 1806 ta->next = SvSTATE (next_sv);
1277 TRANSFER_CHECK (*ta); 1807 TRANSFER_CHECK (*ta);
1278} 1808}
1279 1809
1280static void 1810static void
1281api_transfer (SV *prev_sv, SV *next_sv) 1811api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1812{
1813 struct coro_transfer_args ta;
1814
1815 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1816 TRANSFER (ta, 1);
1817}
1818
1819/** Coro ********************************************************************/
1820
1821ecb_inline void
1822coro_enq (pTHX_ struct coro *coro)
1823{
1824 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1825
1826 SvREFCNT_inc_NN (coro->hv);
1827
1828 coro->next_ready = 0;
1829 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1830 ready [1] = coro;
1831}
1832
1833ecb_inline struct coro *
1834coro_deq (pTHX)
1835{
1836 int prio;
1837
1838 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1839 {
1840 struct coro **ready = coro_ready [prio];
1841
1842 if (ready [0])
1843 {
1844 struct coro *coro = ready [0];
1845 ready [0] = coro->next_ready;
1846 return coro;
1847 }
1848 }
1849
1850 return 0;
1851}
1852
1853static void
1854invoke_sv_ready_hook_helper (void)
1282{ 1855{
1283 dTHX; 1856 dTHX;
1284 struct transfer_args ta; 1857 dSP;
1285 1858
1286 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1859 ENTER;
1287 TRANSFER (ta); 1860 SAVETMPS;
1288}
1289 1861
1290/** Coro ********************************************************************/ 1862 PUSHMARK (SP);
1863 PUTBACK;
1864 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1291 1865
1292static void 1866 FREETMPS;
1293coro_enq (pTHX_ SV *coro_sv) 1867 LEAVE;
1294{
1295 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1296}
1297
1298static SV *
1299coro_deq (pTHX_ int min_prio)
1300{
1301 int prio = PRIO_MAX - PRIO_MIN;
1302
1303 min_prio -= PRIO_MIN;
1304 if (min_prio < 0)
1305 min_prio = 0;
1306
1307 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
1308 if (AvFILLp (coro_ready [prio]) >= 0)
1309 return av_shift (coro_ready [prio]);
1310
1311 return 0;
1312} 1868}
1313 1869
1314static int 1870static int
1315api_ready (SV *coro_sv) 1871api_ready (pTHX_ SV *coro_sv)
1316{ 1872{
1317 dTHX;
1318 struct coro *coro;
1319
1320 if (SvROK (coro_sv))
1321 coro_sv = SvRV (coro_sv);
1322
1323 coro = SvSTATE (coro_sv); 1873 struct coro *coro = SvSTATE (coro_sv);
1324 1874
1325 if (coro->flags & CF_READY) 1875 if (coro->flags & CF_READY)
1326 return 0; 1876 return 0;
1327 1877
1328 coro->flags |= CF_READY; 1878 coro->flags |= CF_READY;
1329 1879
1330 LOCK; 1880 coro_enq (aTHX_ coro);
1331 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1881
1332 ++coro_nready; 1882 if (!coro_nready++)
1333 UNLOCK; 1883 if (coroapi.readyhook)
1884 coroapi.readyhook ();
1334 1885
1335 return 1; 1886 return 1;
1336} 1887}
1337 1888
1338static int 1889static int
1339api_is_ready (SV *coro_sv) 1890api_is_ready (pTHX_ SV *coro_sv)
1340{ 1891{
1341 dTHX;
1342 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1892 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1343} 1893}
1344 1894
1345static void 1895/* expects to own a reference to next->hv */
1896ecb_inline void
1346prepare_schedule (pTHX_ struct transfer_args *ta) 1897prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1347{ 1898{
1348 SV *prev_sv, *next_sv;
1349
1350 for (;;)
1351 {
1352 LOCK;
1353 next_sv = coro_deq (aTHX_ PRIO_MIN);
1354
1355 /* nothing to schedule: call the idle handler */
1356 if (expect_false (!next_sv))
1357 {
1358 dSP;
1359 UNLOCK;
1360
1361 ENTER;
1362 SAVETMPS;
1363
1364 PUSHMARK (SP);
1365 PUTBACK;
1366 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1367
1368 FREETMPS;
1369 LEAVE;
1370 continue;
1371 }
1372
1373 ta->next = SvSTATE (next_sv);
1374
1375 /* cannot transfer to destroyed coros, skip and look for next */
1376 if (expect_false (ta->next->flags & CF_DESTROYED))
1377 {
1378 UNLOCK;
1379 SvREFCNT_dec (next_sv);
1380 /* coro_nready is already taken care of by destroy */
1381 continue;
1382 }
1383
1384 --coro_nready;
1385 UNLOCK;
1386 break;
1387 }
1388
1389 /* free this only after the transfer */
1390 prev_sv = SvRV (coro_current); 1899 SV *prev_sv = SvRV (coro_current);
1900
1391 ta->prev = SvSTATE (prev_sv); 1901 ta->prev = SvSTATE_hv (prev_sv);
1902 ta->next = next;
1903
1392 TRANSFER_CHECK (*ta); 1904 TRANSFER_CHECK (*ta);
1393 assert (ta->next->flags & CF_READY); 1905
1394 ta->next->flags &= ~CF_READY;
1395 SvRV_set (coro_current, next_sv); 1906 SvRV_set (coro_current, (SV *)next->hv);
1396 1907
1397 LOCK;
1398 free_coro_mortal (aTHX); 1908 free_coro_mortal (aTHX);
1399 coro_mortal = prev_sv; 1909 coro_mortal = prev_sv;
1400 UNLOCK;
1401} 1910}
1402 1911
1403static void 1912static void
1913prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1914{
1915 for (;;)
1916 {
1917 struct coro *next = coro_deq (aTHX);
1918
1919 if (ecb_expect_true (next))
1920 {
1921 /* cannot transfer to destroyed coros, skip and look for next */
1922 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1923 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1924 else
1925 {
1926 next->flags &= ~CF_READY;
1927 --coro_nready;
1928
1929 prepare_schedule_to (aTHX_ ta, next);
1930 break;
1931 }
1932 }
1933 else
1934 {
1935 /* nothing to schedule: call the idle handler */
1936 if (SvROK (sv_idle)
1937 && SvOBJECT (SvRV (sv_idle)))
1938 {
1939 if (SvRV (sv_idle) == SvRV (coro_current))
1940 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1941
1942 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1943 api_ready (aTHX_ SvRV (sv_idle));
1944 --coro_nready;
1945 }
1946 else
1947 {
1948 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1949 dSP;
1950
1951 ENTER;
1952 SAVETMPS;
1953
1954 PUSHMARK (SP);
1955 PUTBACK;
1956 call_sv (sv_idle, G_VOID | G_DISCARD);
1957
1958 FREETMPS;
1959 LEAVE;
1960 }
1961 }
1962 }
1963}
1964
1965ecb_inline void
1404prepare_cede (pTHX_ struct transfer_args *ta) 1966prepare_cede (pTHX_ struct coro_transfer_args *ta)
1405{ 1967{
1406 api_ready (coro_current); 1968 api_ready (aTHX_ coro_current);
1407 prepare_schedule (aTHX_ ta); 1969 prepare_schedule (aTHX_ ta);
1408} 1970}
1409 1971
1972ecb_inline void
1973prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1974{
1975 SV *prev = SvRV (coro_current);
1976
1977 if (coro_nready)
1978 {
1979 prepare_schedule (aTHX_ ta);
1980 api_ready (aTHX_ prev);
1981 }
1982 else
1983 prepare_nop (aTHX_ ta);
1984}
1985
1986static void
1987api_schedule (pTHX)
1988{
1989 struct coro_transfer_args ta;
1990
1991 prepare_schedule (aTHX_ &ta);
1992 TRANSFER (ta, 1);
1993}
1994
1995static void
1996api_schedule_to (pTHX_ SV *coro_sv)
1997{
1998 struct coro_transfer_args ta;
1999 struct coro *next = SvSTATE (coro_sv);
2000
2001 SvREFCNT_inc_NN (coro_sv);
2002 prepare_schedule_to (aTHX_ &ta, next);
2003}
2004
1410static int 2005static int
1411prepare_cede_notself (pTHX_ struct transfer_args *ta) 2006api_cede (pTHX)
1412{ 2007{
1413 if (coro_nready) 2008 struct coro_transfer_args ta;
1414 { 2009
1415 SV *prev = SvRV (coro_current);
1416 prepare_schedule (aTHX_ ta); 2010 prepare_cede (aTHX_ &ta);
1417 api_ready (prev); 2011
2012 if (ecb_expect_true (ta.prev != ta.next))
2013 {
2014 TRANSFER (ta, 1);
1418 return 1; 2015 return 1;
1419 } 2016 }
1420 else 2017 else
1421 return 0; 2018 return 0;
1422} 2019}
1423 2020
1424static void
1425api_schedule (void)
1426{
1427 dTHX;
1428 struct transfer_args ta;
1429
1430 prepare_schedule (aTHX_ &ta);
1431 TRANSFER (ta);
1432}
1433
1434static int 2021static int
1435api_cede (void) 2022api_cede_notself (pTHX)
1436{ 2023{
1437 dTHX; 2024 if (coro_nready)
2025 {
1438 struct transfer_args ta; 2026 struct coro_transfer_args ta;
1439 2027
1440 prepare_cede (aTHX_ &ta); 2028 prepare_cede_notself (aTHX_ &ta);
1441
1442 if (expect_true (ta.prev != ta.next))
1443 {
1444 TRANSFER (ta); 2029 TRANSFER (ta, 1);
1445 return 1; 2030 return 1;
1446 } 2031 }
1447 else 2032 else
1448 return 0; 2033 return 0;
1449} 2034}
1450 2035
1451static int 2036static void
1452api_cede_notself (void)
1453{
1454 dTHX;
1455 struct transfer_args ta;
1456
1457 if (prepare_cede_notself (aTHX_ &ta))
1458 {
1459 TRANSFER (ta);
1460 return 1;
1461 }
1462 else
1463 return 0;
1464}
1465
1466static void
1467api_trace (SV *coro_sv, int flags) 2037api_trace (pTHX_ SV *coro_sv, int flags)
1468{ 2038{
1469 dTHX;
1470 struct coro *coro = SvSTATE (coro_sv); 2039 struct coro *coro = SvSTATE (coro_sv);
1471 2040
2041 if (coro->flags & CF_RUNNING)
2042 croak ("cannot enable tracing on a running coroutine, caught");
2043
1472 if (flags & CC_TRACE) 2044 if (flags & CC_TRACE)
1473 { 2045 {
1474 if (!coro->cctx) 2046 if (!coro->cctx)
1475 coro->cctx = cctx_new (); 2047 coro->cctx = cctx_new_run ();
1476 else if (!(coro->cctx->flags & CC_TRACE)) 2048 else if (!(coro->cctx->flags & CC_TRACE))
1477 croak ("cannot enable tracing on coroutine with custom stack"); 2049 croak ("cannot enable tracing on coroutine with custom stack, caught");
1478 2050
1479 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2051 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1480 } 2052 }
1481 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2053 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1482 { 2054 {
… …
1487 else 2059 else
1488 coro->slot->runops = RUNOPS_DEFAULT; 2060 coro->slot->runops = RUNOPS_DEFAULT;
1489 } 2061 }
1490} 2062}
1491 2063
2064static void
2065coro_push_av (pTHX_ AV *av, I32 gimme_v)
2066{
2067 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2068 {
2069 dSP;
2070
2071 if (gimme_v == G_SCALAR)
2072 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2073 else
2074 {
2075 int i;
2076 EXTEND (SP, AvFILLp (av) + 1);
2077
2078 for (i = 0; i <= AvFILLp (av); ++i)
2079 PUSHs (AvARRAY (av)[i]);
2080 }
2081
2082 PUTBACK;
2083 }
2084}
2085
2086static void
2087coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2088{
2089 if (!coro->on_destroy)
2090 coro->on_destroy = newAV ();
2091
2092 av_push (coro->on_destroy, cb);
2093}
2094
2095static void
2096slf_destroy_join (pTHX_ struct CoroSLF *frame)
2097{
2098 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2099}
2100
2101static int
2102slf_check_join (pTHX_ struct CoroSLF *frame)
2103{
2104 struct coro *coro = (struct coro *)frame->data;
2105
2106 if (!coro->status)
2107 return 1;
2108
2109 frame->destroy = 0;
2110
2111 coro_push_av (aTHX_ coro->status, GIMME_V);
2112
2113 SvREFCNT_dec ((SV *)coro->hv);
2114
2115 return 0;
2116}
2117
2118static void
2119slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2120{
2121 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2122
2123 if (items > 1)
2124 croak ("join called with too many arguments");
2125
2126 if (coro->status)
2127 frame->prepare = prepare_nop;
2128 else
2129 {
2130 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2131 frame->prepare = prepare_schedule;
2132 }
2133
2134 frame->check = slf_check_join;
2135 frame->destroy = slf_destroy_join;
2136 frame->data = (void *)coro;
2137 SvREFCNT_inc (coro->hv);
2138}
2139
2140static void
2141coro_call_on_destroy (pTHX_ struct coro *coro)
2142{
2143 AV *od = coro->on_destroy;
2144
2145 if (!od)
2146 return;
2147
2148 while (AvFILLp (od) >= 0)
2149 {
2150 SV *cb = sv_2mortal (av_pop (od));
2151
2152 /* coro hv's (and only hv's at the moment) are supported as well */
2153 if (SvSTATEhv_p (aTHX_ cb))
2154 api_ready (aTHX_ cb);
2155 else
2156 {
2157 dSP; /* don't disturb outer sp */
2158 PUSHMARK (SP);
2159
2160 if (coro->status)
2161 {
2162 PUTBACK;
2163 coro_push_av (aTHX_ coro->status, G_ARRAY);
2164 SPAGAIN;
2165 }
2166
2167 PUTBACK;
2168 call_sv (cb, G_VOID | G_DISCARD);
2169 }
2170 }
2171}
2172
2173static void
2174coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2175{
2176 AV *av;
2177
2178 if (coro->status)
2179 {
2180 av = coro->status;
2181 av_clear (av);
2182 }
2183 else
2184 av = coro->status = newAV ();
2185
2186 /* items are actually not so common, so optimise for this case */
2187 if (items)
2188 {
2189 int i;
2190
2191 av_extend (av, items - 1);
2192
2193 for (i = 0; i < items; ++i)
2194 av_push (av, SvREFCNT_inc_NN (arg [i]));
2195 }
2196}
2197
2198static void
2199slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2200{
2201 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2202 api_ready (aTHX_ sv_manager);
2203
2204 frame->prepare = prepare_schedule;
2205 frame->check = slf_check_repeat;
2206
2207 /* as a minor optimisation, we could unwind all stacks here */
2208 /* but that puts extra pressure on pp_slf, and is not worth much */
2209 /*coro_unwind_stacks (aTHX);*/
2210}
2211
2212static void
2213slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2214{
2215 HV *coro_hv = (HV *)SvRV (coro_current);
2216
2217 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2218 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2219}
2220
2221static void
2222slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{
2224 HV *coro_hv;
2225 struct coro *coro;
2226
2227 if (items <= 0)
2228 croak ("Coro::cancel called without coro object,");
2229
2230 coro = SvSTATE (arg [0]);
2231 coro_hv = coro->hv;
2232
2233 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2234
2235 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2236 {
2237 /* coro currently busy cancelling something, so just notify it */
2238 coro->slf_frame.data = (void *)coro;
2239
2240 frame->prepare = prepare_nop;
2241 frame->check = slf_check_nop;
2242 }
2243 else if (coro_hv == (HV *)SvRV (coro_current))
2244 {
2245 /* cancelling the current coro is allowed, and equals terminate */
2246 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2247 }
2248 else
2249 {
2250 struct coro *self = SvSTATE_current;
2251
2252 /* otherwise we cancel directly, purely for speed reasons
2253 * unfortunately, this requires some magic trickery, as
2254 * somebody else could cancel us, so we have to fight the cancellation.
2255 * this is ugly, and hopefully fully worth the extra speed.
2256 * besides, I can't get the slow-but-safe version working...
2257 */
2258 slf_frame.data = 0;
2259 self->flags |= CF_NOCANCEL;
2260 coro_state_destroy (aTHX_ coro);
2261 self->flags &= ~CF_NOCANCEL;
2262
2263 if (slf_frame.data)
2264 {
2265 /* while we were busy we have been cancelled, so terminate */
2266 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2267 }
2268 else
2269 {
2270 frame->prepare = prepare_nop;
2271 frame->check = slf_check_nop;
2272 }
2273 }
2274}
2275
2276static int
2277slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2278{
2279 frame->prepare = 0;
2280 coro_unwind_stacks (aTHX);
2281
2282 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2283
2284 return 1;
2285}
2286
2287static int
2288safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2289{
2290 if (coro->cctx)
2291 croak ("coro inside C callback, unable to cancel at this time, caught");
2292
2293 if (coro->flags & CF_NEW)
2294 {
2295 coro_set_status (aTHX_ coro, arg, items);
2296 coro_state_destroy (aTHX_ coro);
2297 }
2298 else
2299 {
2300 if (!coro->slf_frame.prepare)
2301 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2302
2303 slf_destroy (aTHX_ coro);
2304
2305 coro_set_status (aTHX_ coro, arg, items);
2306 coro->slf_frame.prepare = prepare_nop;
2307 coro->slf_frame.check = slf_check_safe_cancel;
2308
2309 api_ready (aTHX_ (SV *)coro->hv);
2310 }
2311
2312 return 1;
2313}
2314
2315/*****************************************************************************/
2316/* async pool handler */
2317
2318static int
2319slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2320{
2321 HV *hv = (HV *)SvRV (coro_current);
2322 struct coro *coro = (struct coro *)frame->data;
2323
2324 if (!coro->invoke_cb)
2325 return 1; /* loop till we have invoke */
2326 else
2327 {
2328 hv_store (hv, "desc", sizeof ("desc") - 1,
2329 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2330
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 {
2334 dSP;
2335 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2336 PUTBACK;
2337 }
2338
2339 SvREFCNT_dec (GvAV (PL_defgv));
2340 GvAV (PL_defgv) = coro->invoke_av;
2341 coro->invoke_av = 0;
2342
2343 return 0;
2344 }
2345}
2346
2347static void
2348slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2349{
2350 HV *hv = (HV *)SvRV (coro_current);
2351 struct coro *coro = SvSTATE_hv ((SV *)hv);
2352
2353 if (ecb_expect_true (coro->saved_deffh))
2354 {
2355 /* subsequent iteration */
2356 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2357 coro->saved_deffh = 0;
2358
2359 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2360 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2361 {
2362 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2363 return;
2364 }
2365 else
2366 {
2367 av_clear (GvAV (PL_defgv));
2368 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2369
2370 coro->prio = 0;
2371
2372 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2373 api_trace (aTHX_ coro_current, 0);
2374
2375 frame->prepare = prepare_schedule;
2376 av_push (av_async_pool, SvREFCNT_inc (hv));
2377 }
2378 }
2379 else
2380 {
2381 /* first iteration, simply fall through */
2382 frame->prepare = prepare_nop;
2383 }
2384
2385 frame->check = slf_check_pool_handler;
2386 frame->data = (void *)coro;
2387}
2388
2389/*****************************************************************************/
2390/* rouse callback */
2391
2392#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2393
2394static void
2395coro_rouse_callback (pTHX_ CV *cv)
2396{
2397 dXSARGS;
2398 SV *data = (SV *)S_GENSUB_ARG;
2399
2400 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2401 {
2402 /* first call, set args */
2403 SV *coro = SvRV (data);
2404 AV *av = newAV ();
2405
2406 SvRV_set (data, (SV *)av);
2407
2408 /* better take a full copy of the arguments */
2409 while (items--)
2410 av_store (av, items, newSVsv (ST (items)));
2411
2412 api_ready (aTHX_ coro);
2413 SvREFCNT_dec (coro);
2414 }
2415
2416 XSRETURN_EMPTY;
2417}
2418
2419static int
2420slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2421{
2422 SV *data = (SV *)frame->data;
2423
2424 if (CORO_THROW)
2425 return 0;
2426
2427 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2428 return 1;
2429
2430 /* now push all results on the stack */
2431 {
2432 dSP;
2433 AV *av = (AV *)SvRV (data);
2434 int i;
2435
2436 EXTEND (SP, AvFILLp (av) + 1);
2437 for (i = 0; i <= AvFILLp (av); ++i)
2438 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2439
2440 /* we have stolen the elements, so set length to zero and free */
2441 AvFILLp (av) = -1;
2442 av_undef (av);
2443
2444 PUTBACK;
2445 }
2446
2447 return 0;
2448}
2449
2450static void
2451slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2452{
2453 SV *cb;
2454
2455 if (items)
2456 cb = arg [0];
2457 else
2458 {
2459 struct coro *coro = SvSTATE_current;
2460
2461 if (!coro->rouse_cb)
2462 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2463
2464 cb = sv_2mortal (coro->rouse_cb);
2465 coro->rouse_cb = 0;
2466 }
2467
2468 if (!SvROK (cb)
2469 || SvTYPE (SvRV (cb)) != SVt_PVCV
2470 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2471 croak ("Coro::rouse_wait called with illegal callback argument,");
2472
2473 {
2474 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2475 SV *data = (SV *)S_GENSUB_ARG;
2476
2477 frame->data = (void *)data;
2478 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2479 frame->check = slf_check_rouse_wait;
2480 }
2481}
2482
2483static SV *
2484coro_new_rouse_cb (pTHX)
2485{
2486 HV *hv = (HV *)SvRV (coro_current);
2487 struct coro *coro = SvSTATE_hv (hv);
2488 SV *data = newRV_inc ((SV *)hv);
2489 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2490
2491 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2492 SvREFCNT_dec (data); /* magicext increases the refcount */
2493
2494 SvREFCNT_dec (coro->rouse_cb);
2495 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2496
2497 return cb;
2498}
2499
2500/*****************************************************************************/
2501/* schedule-like-function opcode (SLF) */
2502
2503static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2504static const CV *slf_cv;
2505static SV **slf_argv;
2506static int slf_argc, slf_arga; /* count, allocated */
2507static I32 slf_ax; /* top of stack, for restore */
2508
2509/* this restores the stack in the case we patched the entersub, to */
2510/* recreate the stack frame as perl will on following calls */
2511/* since entersub cleared the stack */
2512static OP *
2513pp_restore (pTHX)
2514{
2515 int i;
2516 SV **SP = PL_stack_base + slf_ax;
2517
2518 PUSHMARK (SP);
2519
2520 EXTEND (SP, slf_argc + 1);
2521
2522 for (i = 0; i < slf_argc; ++i)
2523 PUSHs (sv_2mortal (slf_argv [i]));
2524
2525 PUSHs ((SV *)CvGV (slf_cv));
2526
2527 RETURNOP (slf_restore.op_first);
2528}
2529
2530static void
2531slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2532{
2533 SV **arg = (SV **)slf_frame.data;
2534
2535 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2536}
2537
2538static void
2539slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2540{
2541 if (items != 2)
2542 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2543
2544 frame->prepare = slf_prepare_transfer;
2545 frame->check = slf_check_nop;
2546 frame->data = (void *)arg; /* let's hope it will stay valid */
2547}
2548
2549static void
2550slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 frame->prepare = prepare_schedule;
2553 frame->check = slf_check_nop;
2554}
2555
2556static void
2557slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2558{
2559 struct coro *next = (struct coro *)slf_frame.data;
2560
2561 SvREFCNT_inc_NN (next->hv);
2562 prepare_schedule_to (aTHX_ ta, next);
2563}
2564
2565static void
2566slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2567{
2568 if (!items)
2569 croak ("Coro::schedule_to expects a coroutine argument, caught");
2570
2571 frame->data = (void *)SvSTATE (arg [0]);
2572 frame->prepare = slf_prepare_schedule_to;
2573 frame->check = slf_check_nop;
2574}
2575
2576static void
2577slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2578{
2579 api_ready (aTHX_ SvRV (coro_current));
2580
2581 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2582}
2583
2584static void
2585slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2586{
2587 frame->prepare = prepare_cede;
2588 frame->check = slf_check_nop;
2589}
2590
2591static void
2592slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2593{
2594 frame->prepare = prepare_cede_notself;
2595 frame->check = slf_check_nop;
2596}
2597
2598/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2599static void
2600slf_destroy (pTHX_ struct coro *coro)
2601{
2602 /* this callback is reserved for slf functions needing to do cleanup */
2603 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2604 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2605
2606 /*
2607 * The on_destroy above most likely is from an SLF call.
2608 * Since by definition the SLF call will not finish when we destroy
2609 * the coro, we will have to force-finish it here, otherwise
2610 * cleanup functions cannot call SLF functions.
2611 */
2612 coro->slf_frame.prepare = 0;
2613}
2614
2615/*
2616 * these not obviously related functions are all rolled into one
2617 * function to increase chances that they all will call transfer with the same
2618 * stack offset
2619 * SLF stands for "schedule-like-function".
2620 */
2621static OP *
2622pp_slf (pTHX)
2623{
2624 I32 checkmark; /* mark SP to see how many elements check has pushed */
2625
2626 /* set up the slf frame, unless it has already been set-up */
2627 /* the latter happens when a new coro has been started */
2628 /* or when a new cctx was attached to an existing coroutine */
2629 if (ecb_expect_true (!slf_frame.prepare))
2630 {
2631 /* first iteration */
2632 dSP;
2633 SV **arg = PL_stack_base + TOPMARK + 1;
2634 int items = SP - arg; /* args without function object */
2635 SV *gv = *sp;
2636
2637 /* do a quick consistency check on the "function" object, and if it isn't */
2638 /* for us, divert to the real entersub */
2639 if (SvTYPE (gv) != SVt_PVGV
2640 || !GvCV (gv)
2641 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2642 return PL_ppaddr[OP_ENTERSUB](aTHX);
2643
2644 if (!(PL_op->op_flags & OPf_STACKED))
2645 {
2646 /* ampersand-form of call, use @_ instead of stack */
2647 AV *av = GvAV (PL_defgv);
2648 arg = AvARRAY (av);
2649 items = AvFILLp (av) + 1;
2650 }
2651
2652 /* now call the init function, which needs to set up slf_frame */
2653 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2654 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2655
2656 /* pop args */
2657 SP = PL_stack_base + POPMARK;
2658
2659 PUTBACK;
2660 }
2661
2662 /* now that we have a slf_frame, interpret it! */
2663 /* we use a callback system not to make the code needlessly */
2664 /* complicated, but so we can run multiple perl coros from one cctx */
2665
2666 do
2667 {
2668 struct coro_transfer_args ta;
2669
2670 slf_frame.prepare (aTHX_ &ta);
2671 TRANSFER (ta, 0);
2672
2673 checkmark = PL_stack_sp - PL_stack_base;
2674 }
2675 while (slf_frame.check (aTHX_ &slf_frame));
2676
2677 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2678
2679 /* exception handling */
2680 if (ecb_expect_false (CORO_THROW))
2681 {
2682 SV *exception = sv_2mortal (CORO_THROW);
2683
2684 CORO_THROW = 0;
2685 sv_setsv (ERRSV, exception);
2686 croak (0);
2687 }
2688
2689 /* return value handling - mostly like entersub */
2690 /* make sure we put something on the stack in scalar context */
2691 if (GIMME_V == G_SCALAR
2692 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2693 {
2694 dSP;
2695 SV **bot = PL_stack_base + checkmark;
2696
2697 if (sp == bot) /* too few, push undef */
2698 bot [1] = &PL_sv_undef;
2699 else /* too many, take last one */
2700 bot [1] = *sp;
2701
2702 SP = bot + 1;
2703
2704 PUTBACK;
2705 }
2706
2707 return NORMAL;
2708}
2709
2710static void
2711api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2712{
2713 int i;
2714 SV **arg = PL_stack_base + ax;
2715 int items = PL_stack_sp - arg + 1;
2716
2717 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2718
2719 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2720 && PL_op->op_ppaddr != pp_slf)
2721 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2722
2723 CvFLAGS (cv) |= CVf_SLF;
2724 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2725 slf_cv = cv;
2726
2727 /* we patch the op, and then re-run the whole call */
2728 /* we have to put the same argument on the stack for this to work */
2729 /* and this will be done by pp_restore */
2730 slf_restore.op_next = (OP *)&slf_restore;
2731 slf_restore.op_type = OP_CUSTOM;
2732 slf_restore.op_ppaddr = pp_restore;
2733 slf_restore.op_first = PL_op;
2734
2735 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2736
2737 if (PL_op->op_flags & OPf_STACKED)
2738 {
2739 if (items > slf_arga)
2740 {
2741 slf_arga = items;
2742 Safefree (slf_argv);
2743 New (0, slf_argv, slf_arga, SV *);
2744 }
2745
2746 slf_argc = items;
2747
2748 for (i = 0; i < items; ++i)
2749 slf_argv [i] = SvREFCNT_inc (arg [i]);
2750 }
2751 else
2752 slf_argc = 0;
2753
2754 PL_op->op_ppaddr = pp_slf;
2755 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2756
2757 PL_op = (OP *)&slf_restore;
2758}
2759
2760/*****************************************************************************/
2761/* dynamic wind */
2762
2763static void
2764on_enterleave_call (pTHX_ SV *cb)
2765{
2766 dSP;
2767
2768 PUSHSTACK;
2769
2770 PUSHMARK (SP);
2771 PUTBACK;
2772 call_sv (cb, G_VOID | G_DISCARD);
2773 SPAGAIN;
2774
2775 POPSTACK;
2776}
2777
2778static SV *
2779coro_avp_pop_and_free (pTHX_ AV **avp)
2780{
2781 AV *av = *avp;
2782 SV *res = av_pop (av);
2783
2784 if (AvFILLp (av) < 0)
2785 {
2786 *avp = 0;
2787 SvREFCNT_dec (av);
2788 }
2789
2790 return res;
2791}
2792
2793static void
2794coro_pop_on_enter (pTHX_ void *coro)
2795{
2796 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2797 SvREFCNT_dec (cb);
2798}
2799
2800static void
2801coro_pop_on_leave (pTHX_ void *coro)
2802{
2803 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2804 on_enterleave_call (aTHX_ sv_2mortal (cb));
2805}
2806
2807/*****************************************************************************/
2808/* PerlIO::cede */
2809
2810typedef struct
2811{
2812 PerlIOBuf base;
2813 NV next, every;
2814} PerlIOCede;
2815
2816static IV ecb_cold
2817PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2818{
2819 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2820
2821 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2822 self->next = nvtime () + self->every;
2823
2824 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2825}
2826
2827static SV * ecb_cold
2828PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2829{
2830 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2831
2832 return newSVnv (self->every);
2833}
2834
2835static IV
2836PerlIOCede_flush (pTHX_ PerlIO *f)
2837{
2838 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2839 double now = nvtime ();
2840
2841 if (now >= self->next)
2842 {
2843 api_cede (aTHX);
2844 self->next = now + self->every;
2845 }
2846
2847 return PerlIOBuf_flush (aTHX_ f);
2848}
2849
2850static PerlIO_funcs PerlIO_cede =
2851{
2852 sizeof(PerlIO_funcs),
2853 "cede",
2854 sizeof(PerlIOCede),
2855 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2856 PerlIOCede_pushed,
2857 PerlIOBuf_popped,
2858 PerlIOBuf_open,
2859 PerlIOBase_binmode,
2860 PerlIOCede_getarg,
2861 PerlIOBase_fileno,
2862 PerlIOBuf_dup,
2863 PerlIOBuf_read,
2864 PerlIOBuf_unread,
2865 PerlIOBuf_write,
2866 PerlIOBuf_seek,
2867 PerlIOBuf_tell,
2868 PerlIOBuf_close,
2869 PerlIOCede_flush,
2870 PerlIOBuf_fill,
2871 PerlIOBase_eof,
2872 PerlIOBase_error,
2873 PerlIOBase_clearerr,
2874 PerlIOBase_setlinebuf,
2875 PerlIOBuf_get_base,
2876 PerlIOBuf_bufsiz,
2877 PerlIOBuf_get_ptr,
2878 PerlIOBuf_get_cnt,
2879 PerlIOBuf_set_ptrcnt,
2880};
2881
2882/*****************************************************************************/
2883/* Coro::Semaphore & Coro::Signal */
2884
2885static SV *
2886coro_waitarray_new (pTHX_ int count)
2887{
2888 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2889 AV *av = newAV ();
2890 SV **ary;
2891
2892 /* unfortunately, building manually saves memory */
2893 Newx (ary, 2, SV *);
2894 AvALLOC (av) = ary;
2895#if PERL_VERSION_ATLEAST (5,10,0)
2896 AvARRAY (av) = ary;
2897#else
2898 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2899 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2900 SvPVX ((SV *)av) = (char *)ary;
2901#endif
2902 AvMAX (av) = 1;
2903 AvFILLp (av) = 0;
2904 ary [0] = newSViv (count);
2905
2906 return newRV_noinc ((SV *)av);
2907}
2908
2909/* semaphore */
2910
2911static void
2912coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2913{
2914 SV *count_sv = AvARRAY (av)[0];
2915 IV count = SvIVX (count_sv);
2916
2917 count += adjust;
2918 SvIVX (count_sv) = count;
2919
2920 /* now wake up as many waiters as are expected to lock */
2921 while (count > 0 && AvFILLp (av) > 0)
2922 {
2923 SV *cb;
2924
2925 /* swap first two elements so we can shift a waiter */
2926 AvARRAY (av)[0] = AvARRAY (av)[1];
2927 AvARRAY (av)[1] = count_sv;
2928 cb = av_shift (av);
2929
2930 if (SvOBJECT (cb))
2931 {
2932 api_ready (aTHX_ cb);
2933 --count;
2934 }
2935 else if (SvTYPE (cb) == SVt_PVCV)
2936 {
2937 dSP;
2938 PUSHMARK (SP);
2939 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2940 PUTBACK;
2941 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2942 }
2943
2944 SvREFCNT_dec (cb);
2945 }
2946}
2947
2948static void
2949coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2950{
2951 /* call $sem->adjust (0) to possibly wake up some other waiters */
2952 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2953}
2954
2955static int
2956slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2957{
2958 AV *av = (AV *)frame->data;
2959 SV *count_sv = AvARRAY (av)[0];
2960 SV *coro_hv = SvRV (coro_current);
2961
2962 /* if we are about to throw, don't actually acquire the lock, just throw */
2963 if (CORO_THROW)
2964 return 0;
2965 else if (SvIVX (count_sv) > 0)
2966 {
2967 frame->destroy = 0;
2968
2969 if (acquire)
2970 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2971 else
2972 coro_semaphore_adjust (aTHX_ av, 0);
2973
2974 return 0;
2975 }
2976 else
2977 {
2978 int i;
2979 /* if we were woken up but can't down, we look through the whole */
2980 /* waiters list and only add us if we aren't in there already */
2981 /* this avoids some degenerate memory usage cases */
2982 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2983 if (AvARRAY (av)[i] == coro_hv)
2984 return 1;
2985
2986 av_push (av, SvREFCNT_inc (coro_hv));
2987 return 1;
2988 }
2989}
2990
2991static int
2992slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2993{
2994 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2995}
2996
2997static int
2998slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2999{
3000 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3001}
3002
3003static void
3004slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3005{
3006 AV *av = (AV *)SvRV (arg [0]);
3007
3008 if (SvIVX (AvARRAY (av)[0]) > 0)
3009 {
3010 frame->data = (void *)av;
3011 frame->prepare = prepare_nop;
3012 }
3013 else
3014 {
3015 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
3016
3017 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
3018 frame->prepare = prepare_schedule;
3019 /* to avoid race conditions when a woken-up coro gets terminated */
3020 /* we arrange for a temporary on_destroy that calls adjust (0) */
3021 frame->destroy = coro_semaphore_destroy;
3022 }
3023}
3024
3025static void
3026slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3027{
3028 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3029 frame->check = slf_check_semaphore_down;
3030}
3031
3032static void
3033slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3034{
3035 if (items >= 2)
3036 {
3037 /* callback form */
3038 AV *av = (AV *)SvRV (arg [0]);
3039 SV *cb_cv = s_get_cv_croak (arg [1]);
3040
3041 av_push (av, SvREFCNT_inc_NN (cb_cv));
3042
3043 if (SvIVX (AvARRAY (av)[0]) > 0)
3044 coro_semaphore_adjust (aTHX_ av, 0);
3045
3046 frame->prepare = prepare_nop;
3047 frame->check = slf_check_nop;
3048 }
3049 else
3050 {
3051 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3052 frame->check = slf_check_semaphore_wait;
3053 }
3054}
3055
3056/* signal */
3057
3058static void
3059coro_signal_wake (pTHX_ AV *av, int count)
3060{
3061 SvIVX (AvARRAY (av)[0]) = 0;
3062
3063 /* now signal count waiters */
3064 while (count > 0 && AvFILLp (av) > 0)
3065 {
3066 SV *cb;
3067
3068 /* swap first two elements so we can shift a waiter */
3069 cb = AvARRAY (av)[0];
3070 AvARRAY (av)[0] = AvARRAY (av)[1];
3071 AvARRAY (av)[1] = cb;
3072
3073 cb = av_shift (av);
3074
3075 if (SvTYPE (cb) == SVt_PVCV)
3076 {
3077 dSP;
3078 PUSHMARK (SP);
3079 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3080 PUTBACK;
3081 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3082 }
3083 else
3084 {
3085 api_ready (aTHX_ cb);
3086 sv_setiv (cb, 0); /* signal waiter */
3087 }
3088
3089 SvREFCNT_dec (cb);
3090
3091 --count;
3092 }
3093}
3094
3095static int
3096slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3097{
3098 /* if we are about to throw, also stop waiting */
3099 return SvROK ((SV *)frame->data) && !CORO_THROW;
3100}
3101
3102static void
3103slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3104{
3105 AV *av = (AV *)SvRV (arg [0]);
3106
3107 if (items >= 2)
3108 {
3109 SV *cb_cv = s_get_cv_croak (arg [1]);
3110 av_push (av, SvREFCNT_inc_NN (cb_cv));
3111
3112 if (SvIVX (AvARRAY (av)[0]))
3113 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3114
3115 frame->prepare = prepare_nop;
3116 frame->check = slf_check_nop;
3117 }
3118 else if (SvIVX (AvARRAY (av)[0]))
3119 {
3120 SvIVX (AvARRAY (av)[0]) = 0;
3121 frame->prepare = prepare_nop;
3122 frame->check = slf_check_nop;
3123 }
3124 else
3125 {
3126 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3127
3128 av_push (av, waiter);
3129
3130 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3131 frame->prepare = prepare_schedule;
3132 frame->check = slf_check_signal_wait;
3133 }
3134}
3135
3136/*****************************************************************************/
3137/* Coro::AIO */
3138
3139#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3140
3141/* helper storage struct */
3142struct io_state
3143{
3144 int errorno;
3145 I32 laststype; /* U16 in 5.10.0 */
3146 int laststatval;
3147 Stat_t statcache;
3148};
3149
3150static void
3151coro_aio_callback (pTHX_ CV *cv)
3152{
3153 dXSARGS;
3154 AV *state = (AV *)S_GENSUB_ARG;
3155 SV *coro = av_pop (state);
3156 SV *data_sv = newSV (sizeof (struct io_state));
3157
3158 av_extend (state, items - 1);
3159
3160 sv_upgrade (data_sv, SVt_PV);
3161 SvCUR_set (data_sv, sizeof (struct io_state));
3162 SvPOK_only (data_sv);
3163
3164 {
3165 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3166
3167 data->errorno = errno;
3168 data->laststype = PL_laststype;
3169 data->laststatval = PL_laststatval;
3170 data->statcache = PL_statcache;
3171 }
3172
3173 /* now build the result vector out of all the parameters and the data_sv */
3174 {
3175 int i;
3176
3177 for (i = 0; i < items; ++i)
3178 av_push (state, SvREFCNT_inc_NN (ST (i)));
3179 }
3180
3181 av_push (state, data_sv);
3182
3183 api_ready (aTHX_ coro);
3184 SvREFCNT_dec (coro);
3185 SvREFCNT_dec ((AV *)state);
3186}
3187
3188static int
3189slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3190{
3191 AV *state = (AV *)frame->data;
3192
3193 /* if we are about to throw, return early */
3194 /* this does not cancel the aio request, but at least */
3195 /* it quickly returns */
3196 if (CORO_THROW)
3197 return 0;
3198
3199 /* one element that is an RV? repeat! */
3200 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3201 return 1;
3202
3203 /* restore status */
3204 {
3205 SV *data_sv = av_pop (state);
3206 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3207
3208 errno = data->errorno;
3209 PL_laststype = data->laststype;
3210 PL_laststatval = data->laststatval;
3211 PL_statcache = data->statcache;
3212
3213 SvREFCNT_dec (data_sv);
3214 }
3215
3216 /* push result values */
3217 {
3218 dSP;
3219 int i;
3220
3221 EXTEND (SP, AvFILLp (state) + 1);
3222 for (i = 0; i <= AvFILLp (state); ++i)
3223 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3224
3225 PUTBACK;
3226 }
3227
3228 return 0;
3229}
3230
3231static void
3232slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3233{
3234 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3235 SV *coro_hv = SvRV (coro_current);
3236 struct coro *coro = SvSTATE_hv (coro_hv);
3237
3238 /* put our coroutine id on the state arg */
3239 av_push (state, SvREFCNT_inc_NN (coro_hv));
3240
3241 /* first see whether we have a non-zero priority and set it as AIO prio */
3242 if (coro->prio)
3243 {
3244 dSP;
3245
3246 static SV *prio_cv;
3247 static SV *prio_sv;
3248
3249 if (ecb_expect_false (!prio_cv))
3250 {
3251 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3252 prio_sv = newSViv (0);
3253 }
3254
3255 PUSHMARK (SP);
3256 sv_setiv (prio_sv, coro->prio);
3257 XPUSHs (prio_sv);
3258
3259 PUTBACK;
3260 call_sv (prio_cv, G_VOID | G_DISCARD);
3261 }
3262
3263 /* now call the original request */
3264 {
3265 dSP;
3266 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3267 int i;
3268
3269 PUSHMARK (SP);
3270
3271 /* first push all args to the stack */
3272 EXTEND (SP, items + 1);
3273
3274 for (i = 0; i < items; ++i)
3275 PUSHs (arg [i]);
3276
3277 /* now push the callback closure */
3278 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3279
3280 /* now call the AIO function - we assume our request is uncancelable */
3281 PUTBACK;
3282 call_sv ((SV *)req, G_VOID | G_DISCARD);
3283 }
3284
3285 /* now that the request is going, we loop till we have a result */
3286 frame->data = (void *)state;
3287 frame->prepare = prepare_schedule;
3288 frame->check = slf_check_aio_req;
3289}
3290
3291static void
3292coro_aio_req_xs (pTHX_ CV *cv)
3293{
3294 dXSARGS;
3295
3296 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3297
3298 XSRETURN_EMPTY;
3299}
3300
3301/*****************************************************************************/
3302
3303#if CORO_CLONE
3304# include "clone.c"
3305#endif
3306
3307/*****************************************************************************/
3308
3309static SV *
3310coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3311{
3312 SV *coro_sv;
3313 struct coro *coro;
3314 MAGIC *mg;
3315 HV *hv;
3316 SV *cb;
3317 int i;
3318
3319 if (argc > 0)
3320 {
3321 cb = s_get_cv_croak (argv [0]);
3322
3323 if (!is_coro)
3324 {
3325 if (CvISXSUB (cb))
3326 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3327
3328 if (!CvROOT (cb))
3329 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3330 }
3331 }
3332
3333 Newz (0, coro, 1, struct coro);
3334 coro->args = newAV ();
3335 coro->flags = CF_NEW;
3336
3337 if (coro_first) coro_first->prev = coro;
3338 coro->next = coro_first;
3339 coro_first = coro;
3340
3341 coro->hv = hv = newHV ();
3342 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3343 mg->mg_flags |= MGf_DUP;
3344 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3345
3346 if (argc > 0)
3347 {
3348 av_extend (coro->args, argc + is_coro - 1);
3349
3350 if (is_coro)
3351 {
3352 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3353 cb = (SV *)cv_coro_run;
3354 }
3355
3356 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3357
3358 for (i = 1; i < argc; i++)
3359 av_push (coro->args, newSVsv (argv [i]));
3360 }
3361
3362 return coro_sv;
3363}
3364
3365#ifndef __cplusplus
3366ecb_cold XS(boot_Coro__State);
3367#endif
3368
3369#if CORO_JIT
3370
3371static void ecb_noinline ecb_cold
3372pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3373{
3374 dSP;
3375 AV *av = newAV ();
3376
3377 av_store (av, 3, newSVuv (d));
3378 av_store (av, 2, newSVuv (c));
3379 av_store (av, 1, newSVuv (b));
3380 av_store (av, 0, newSVuv (a));
3381
3382 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3383
3384 PUTBACK;
3385}
3386
3387static void ecb_noinline ecb_cold
3388jit_init (pTHX)
3389{
3390 dSP;
3391 SV *load, *save;
3392 char *map_base;
3393 char *load_ptr, *save_ptr;
3394 STRLEN load_len, save_len, map_len;
3395 int count;
3396
3397 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3398
3399 PUSHMARK (SP);
3400 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3401 #include "state.h"
3402 count = call_pv ("Coro::State::_jit", G_ARRAY);
3403 SPAGAIN;
3404
3405 save = POPs; save_ptr = SvPVbyte (save, save_len);
3406 load = POPs; load_ptr = SvPVbyte (load, load_len);
3407
3408 map_len = load_len + save_len + 16;
3409
3410 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3411
3412 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3413
3414 load_perl_slots = (load_save_perl_slots_type)map_base;
3415 memcpy (map_base, load_ptr, load_len);
3416
3417 map_base += (load_len + 15) & ~15;
3418
3419 save_perl_slots = (load_save_perl_slots_type)map_base;
3420 memcpy (map_base, save_ptr, save_len);
3421
3422 /* we are good citizens and try to make the page read-only, so the evil evil */
3423 /* hackers might have it a bit more difficult */
3424 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3425
3426 PUTBACK;
3427 eval_pv ("undef &Coro::State::_jit", 1);
3428}
3429
3430#endif
3431
1492MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3432MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1493 3433
1494PROTOTYPES: DISABLE 3434PROTOTYPES: DISABLE
1495 3435
1496BOOT: 3436BOOT:
1497{ 3437{
1498#ifdef USE_ITHREADS 3438#ifdef USE_ITHREADS
1499 MUTEX_INIT (&coro_mutex); 3439# if CORO_PTHREAD
3440 coro_thx = PERL_GET_CONTEXT;
3441# endif
1500#endif 3442#endif
1501 BOOT_PAGESIZE; 3443 BOOT_PAGESIZE;
3444
3445 /* perl defines these to check for existance first, but why it doesn't */
3446 /* just create them one at init time is not clear to me, except for */
3447 /* programs trying to delete them, but... */
3448 /* anyway, we declare this as invalid and make sure they are initialised here */
3449 DEFSV;
3450 ERRSV;
3451
3452 cctx_current = cctx_new_empty ();
1502 3453
1503 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3454 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1504 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3455 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1505 3456
3457 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
3458 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
3459 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
3460
1506 hv_sig = coro_get_hv ("SIG", TRUE); 3461 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1507 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 3462 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1508 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 3463 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1509
1510 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1511 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1512 3464
1513 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3465 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1514 3466
1515 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3467 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1516 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3468 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1521 main_top_env = PL_top_env; 3473 main_top_env = PL_top_env;
1522 3474
1523 while (main_top_env->je_prev) 3475 while (main_top_env->je_prev)
1524 main_top_env = main_top_env->je_prev; 3476 main_top_env = main_top_env->je_prev;
1525 3477
3478 {
3479 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3480
3481 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3482 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3483
3484 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3485 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3486 }
3487
1526 coroapi.ver = CORO_API_VERSION; 3488 coroapi.ver = CORO_API_VERSION;
3489 coroapi.rev = CORO_API_REVISION;
3490
1527 coroapi.transfer = api_transfer; 3491 coroapi.transfer = api_transfer;
1528 3492
3493 coroapi.sv_state = SvSTATE_;
3494 coroapi.execute_slf = api_execute_slf;
3495 coroapi.prepare_nop = prepare_nop;
3496 coroapi.prepare_schedule = prepare_schedule;
3497 coroapi.prepare_cede = prepare_cede;
3498 coroapi.prepare_cede_notself = prepare_cede_notself;
3499
3500 time_init (aTHX);
3501
1529 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3502 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3503#if CORO_JIT
3504 PUTBACK;
3505 jit_init (aTHX);
3506 SPAGAIN;
3507#endif
1530} 3508}
1531 3509
1532SV * 3510SV *
1533new (char *klass, ...) 3511new (SV *klass, ...)
3512 ALIAS:
3513 Coro::new = 1
1534 CODE: 3514 CODE:
1535{ 3515 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1536 struct coro *coro;
1537 HV *hv;
1538 int i;
1539
1540 Newz (0, coro, 1, struct coro);
1541 coro->args = newAV ();
1542 coro->flags = CF_NEW;
1543
1544 if (coro_first) coro_first->prev = coro;
1545 coro->next = coro_first;
1546 coro_first = coro;
1547
1548 coro->hv = hv = newHV ();
1549 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1550 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1551
1552 av_extend (coro->args, items - 1);
1553 for (i = 1; i < items; i++)
1554 av_push (coro->args, newSVsv (ST (i)));
1555}
1556 OUTPUT:
1557 RETVAL
1558
1559# these not obviously related functions are all rolled into the same xs
1560# function to increase chances that they all will call transfer with the same
1561# stack offset
1562void
1563_set_stacklevel (...)
1564 ALIAS:
1565 Coro::State::transfer = 1
1566 Coro::schedule = 2
1567 Coro::cede = 3
1568 Coro::cede_notself = 4
1569 CODE:
1570{
1571 struct transfer_args ta;
1572
1573 switch (ix)
1574 {
1575 case 0:
1576 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1577 ta.next = 0;
1578 break;
1579
1580 case 1:
1581 if (items != 2)
1582 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1583
1584 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1585 break;
1586
1587 case 2:
1588 prepare_schedule (aTHX_ &ta);
1589 break;
1590
1591 case 3:
1592 prepare_cede (aTHX_ &ta);
1593 break;
1594
1595 case 4:
1596 if (!prepare_cede_notself (aTHX_ &ta))
1597 XSRETURN_EMPTY;
1598
1599 break;
1600 }
1601
1602 BARRIER;
1603 TRANSFER (ta);
1604
1605 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1606 XSRETURN_YES;
1607}
1608
1609bool
1610_destroy (SV *coro_sv)
1611 CODE:
1612 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1613 OUTPUT: 3516 OUTPUT:
1614 RETVAL 3517 RETVAL
1615 3518
1616void 3519void
3520transfer (...)
3521 PROTOTYPE: $$
3522 CODE:
3523 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3524
3525void
1617_exit (code) 3526_exit (int code)
1618 int code
1619 PROTOTYPE: $ 3527 PROTOTYPE: $
1620 CODE: 3528 CODE:
1621 _exit (code); 3529 _exit (code);
1622 3530
3531SV *
3532clone (Coro::State coro)
3533 CODE:
3534{
3535#if CORO_CLONE
3536 struct coro *ncoro = coro_clone (aTHX_ coro);
3537 MAGIC *mg;
3538 /* TODO: too much duplication */
3539 ncoro->hv = newHV ();
3540 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3541 mg->mg_flags |= MGf_DUP;
3542 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3543#else
3544 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3545#endif
3546}
3547 OUTPUT:
3548 RETVAL
3549
1623int 3550int
1624cctx_stacksize (int new_stacksize = 0) 3551cctx_stacksize (int new_stacksize = 0)
3552 PROTOTYPE: ;$
1625 CODE: 3553 CODE:
1626 RETVAL = coro_stacksize; 3554 RETVAL = cctx_stacksize;
1627 if (new_stacksize) 3555 if (new_stacksize)
3556 {
1628 coro_stacksize = new_stacksize; 3557 cctx_stacksize = new_stacksize;
3558 ++cctx_gen;
3559 }
1629 OUTPUT: 3560 OUTPUT:
1630 RETVAL 3561 RETVAL
1631 3562
1632int 3563int
3564cctx_max_idle (int max_idle = 0)
3565 PROTOTYPE: ;$
3566 CODE:
3567 RETVAL = cctx_max_idle;
3568 if (max_idle > 1)
3569 cctx_max_idle = max_idle;
3570 OUTPUT:
3571 RETVAL
3572
3573int
1633cctx_count () 3574cctx_count ()
3575 PROTOTYPE:
1634 CODE: 3576 CODE:
1635 RETVAL = cctx_count; 3577 RETVAL = cctx_count;
1636 OUTPUT: 3578 OUTPUT:
1637 RETVAL 3579 RETVAL
1638 3580
1639int 3581int
1640cctx_idle () 3582cctx_idle ()
3583 PROTOTYPE:
1641 CODE: 3584 CODE:
1642 RETVAL = cctx_idle; 3585 RETVAL = cctx_idle;
1643 OUTPUT: 3586 OUTPUT:
1644 RETVAL 3587 RETVAL
1645 3588
1646void 3589void
1647list () 3590list ()
3591 PROTOTYPE:
1648 PPCODE: 3592 PPCODE:
1649{ 3593{
1650 struct coro *coro; 3594 struct coro *coro;
1651 for (coro = coro_first; coro; coro = coro->next) 3595 for (coro = coro_first; coro; coro = coro->next)
1652 if (coro->hv) 3596 if (coro->hv)
… …
1657call (Coro::State coro, SV *coderef) 3601call (Coro::State coro, SV *coderef)
1658 ALIAS: 3602 ALIAS:
1659 eval = 1 3603 eval = 1
1660 CODE: 3604 CODE:
1661{ 3605{
1662 if (coro->mainstack) 3606 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1663 { 3607 {
1664 struct coro temp; 3608 struct coro *current = SvSTATE_current;
3609 struct CoroSLF slf_save;
1665 3610
1666 if (!(coro->flags & CF_RUNNING)) 3611 if (current != coro)
1667 { 3612 {
3613 PUTBACK;
1668 save_perl (aTHX_ &temp); 3614 save_perl (aTHX_ current);
1669 load_perl (aTHX_ coro); 3615 load_perl (aTHX_ coro);
3616 /* the coro is most likely in an active SLF call.
3617 * while not strictly required (the code we execute is
3618 * not allowed to call any SLF functions), it's cleaner
3619 * to reinitialise the slf_frame and restore it later.
3620 * This might one day allow us to actually do SLF calls
3621 * from code executed here.
3622 */
3623 slf_save = slf_frame;
3624 slf_frame.prepare = 0;
3625 SPAGAIN;
1670 } 3626 }
1671 3627
1672 { 3628 PUSHSTACK;
1673 dSP; 3629
1674 ENTER;
1675 SAVETMPS;
1676 PUSHMARK (SP); 3630 PUSHMARK (SP);
1677 PUTBACK; 3631 PUTBACK;
1678 3632
1679 if (ix) 3633 if (ix)
1680 eval_sv (coderef, 0); 3634 eval_sv (coderef, 0);
1681 else 3635 else
1682 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3636 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1683 3637
3638 POPSTACK;
1684 SPAGAIN; 3639 SPAGAIN;
1685 FREETMPS;
1686 LEAVE;
1687 PUTBACK;
1688 }
1689 3640
1690 if (!(coro->flags & CF_RUNNING)) 3641 if (current != coro)
1691 { 3642 {
3643 PUTBACK;
3644 slf_frame = slf_save;
1692 save_perl (aTHX_ coro); 3645 save_perl (aTHX_ coro);
1693 load_perl (aTHX_ &temp); 3646 load_perl (aTHX_ current);
3647 SPAGAIN;
1694 } 3648 }
1695 } 3649 }
1696} 3650}
1697 3651
1698SV * 3652SV *
… …
1700 PROTOTYPE: $ 3654 PROTOTYPE: $
1701 ALIAS: 3655 ALIAS:
1702 is_ready = CF_READY 3656 is_ready = CF_READY
1703 is_running = CF_RUNNING 3657 is_running = CF_RUNNING
1704 is_new = CF_NEW 3658 is_new = CF_NEW
1705 is_destroyed = CF_DESTROYED 3659 is_destroyed = CF_ZOMBIE
3660 is_zombie = CF_ZOMBIE
3661 is_suspended = CF_SUSPENDED
1706 CODE: 3662 CODE:
1707 RETVAL = boolSV (coro->flags & ix); 3663 RETVAL = boolSV (coro->flags & ix);
1708 OUTPUT: 3664 OUTPUT:
1709 RETVAL 3665 RETVAL
1710 3666
1711void 3667void
3668throw (SV *self, SV *exception = &PL_sv_undef)
3669 PROTOTYPE: $;$
3670 CODE:
3671{
3672 struct coro *coro = SvSTATE (self);
3673 struct coro *current = SvSTATE_current;
3674 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3675 SvREFCNT_dec (*exceptionp);
3676 SvGETMAGIC (exception);
3677 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3678
3679 api_ready (aTHX_ self);
3680}
3681
3682void
1712api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3683api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3684 PROTOTYPE: $;$
3685 C_ARGS: aTHX_ coro, flags
1713 3686
1714SV * 3687SV *
1715has_stack (Coro::State coro) 3688has_cctx (Coro::State coro)
1716 PROTOTYPE: $ 3689 PROTOTYPE: $
1717 CODE: 3690 CODE:
1718 RETVAL = boolSV (!!coro->cctx); 3691 /* maybe manage the running flag differently */
3692 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1719 OUTPUT: 3693 OUTPUT:
1720 RETVAL 3694 RETVAL
1721 3695
1722int 3696int
1723is_traced (Coro::State coro) 3697is_traced (Coro::State coro)
… …
1725 CODE: 3699 CODE:
1726 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3700 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1727 OUTPUT: 3701 OUTPUT:
1728 RETVAL 3702 RETVAL
1729 3703
1730IV 3704UV
1731rss (Coro::State coro) 3705rss (Coro::State coro)
1732 PROTOTYPE: $ 3706 PROTOTYPE: $
1733 ALIAS: 3707 ALIAS:
1734 usecount = 1 3708 usecount = 1
1735 CODE: 3709 CODE:
… …
1739 case 1: RETVAL = coro->usecount; break; 3713 case 1: RETVAL = coro->usecount; break;
1740 } 3714 }
1741 OUTPUT: 3715 OUTPUT:
1742 RETVAL 3716 RETVAL
1743 3717
3718void
3719force_cctx ()
3720 PROTOTYPE:
3721 CODE:
3722 cctx_current->idle_sp = 0;
3723
3724void
3725swap_defsv (Coro::State self)
3726 PROTOTYPE: $
3727 ALIAS:
3728 swap_defav = 1
3729 CODE:
3730 if (!self->slot)
3731 croak ("cannot swap state with coroutine that has no saved state,");
3732 else
3733 {
3734 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3735 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3736
3737 SV *tmp = *src; *src = *dst; *dst = tmp;
3738 }
3739
3740void
3741cancel (Coro::State self)
3742 CODE:
3743 coro_state_destroy (aTHX_ self);
3744
3745SV *
3746enable_times (int enabled = enable_times)
3747 CODE:
3748{
3749 RETVAL = boolSV (enable_times);
3750
3751 if (enabled != enable_times)
3752 {
3753 enable_times = enabled;
3754
3755 coro_times_update ();
3756 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3757 }
3758}
3759 OUTPUT:
3760 RETVAL
3761
3762void
3763times (Coro::State self)
3764 PPCODE:
3765{
3766 struct coro *current = SvSTATE (coro_current);
3767
3768 if (ecb_expect_false (current == self))
3769 {
3770 coro_times_update ();
3771 coro_times_add (SvSTATE (coro_current));
3772 }
3773
3774 EXTEND (SP, 2);
3775 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3776 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3777
3778 if (ecb_expect_false (current == self))
3779 coro_times_sub (SvSTATE (coro_current));
3780}
3781
3782void
3783swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3784 CODE:
3785{
3786 struct coro *current = SvSTATE_current;
3787
3788 if (current == coro)
3789 SWAP_SVS (current);
3790
3791 if (!coro->swap_sv)
3792 coro->swap_sv = newAV ();
3793
3794 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3795 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3796
3797 if (current == coro)
3798 SWAP_SVS (current);
3799}
3800
1744 3801
1745MODULE = Coro::State PACKAGE = Coro 3802MODULE = Coro::State PACKAGE = Coro
1746 3803
1747BOOT: 3804BOOT:
1748{ 3805{
1749 int i;
1750
1751 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3806 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1752 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3807 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3808 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3809 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1753 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3810 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3811 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3812 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3813 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1754 3814
1755 coro_current = coro_get_sv ("Coro::current", FALSE); 3815 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1756 SvREADONLY_on (coro_current); 3816 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
1757 3817 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3818 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3819
1758 coro_stash = gv_stashpv ("Coro", TRUE); 3820 coro_stash = gv_stashpv ("Coro", TRUE);
1759 3821
1760 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3822 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1761 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3823 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1762 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3824 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1763 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3825 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1764 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3826 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1765 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3827 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1766
1767 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1768 coro_ready[i] = newAV ();
1769 3828
1770 { 3829 {
1771 SV *sv = perl_get_sv ("Coro::API", TRUE); 3830 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1772 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1773 3831
1774 coroapi.schedule = api_schedule; 3832 coroapi.schedule = api_schedule;
3833 coroapi.schedule_to = api_schedule_to;
1775 coroapi.cede = api_cede; 3834 coroapi.cede = api_cede;
1776 coroapi.cede_notself = api_cede_notself; 3835 coroapi.cede_notself = api_cede_notself;
1777 coroapi.ready = api_ready; 3836 coroapi.ready = api_ready;
1778 coroapi.is_ready = api_is_ready; 3837 coroapi.is_ready = api_is_ready;
1779 coroapi.nready = &coro_nready; 3838 coroapi.nready = coro_nready;
1780 coroapi.current = coro_current; 3839 coroapi.current = coro_current;
1781 3840
1782 GCoroAPI = &coroapi; 3841 /*GCoroAPI = &coroapi;*/
1783 sv_setiv (sv, (IV)&coroapi); 3842 sv_setiv (sv, (IV)&coroapi);
1784 SvREADONLY_on (sv); 3843 SvREADONLY_on (sv);
1785 } 3844 }
1786} 3845}
3846
3847SV *
3848async (...)
3849 PROTOTYPE: &@
3850 CODE:
3851 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3852 api_ready (aTHX_ RETVAL);
3853 OUTPUT:
3854 RETVAL
3855
3856void
3857_destroy (Coro::State coro)
3858 CODE:
3859 /* used by the manager thread */
3860 coro_state_destroy (aTHX_ coro);
3861
3862void
3863on_destroy (Coro::State coro, SV *cb)
3864 CODE:
3865 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3866
3867void
3868join (...)
3869 CODE:
3870 CORO_EXECUTE_SLF_XS (slf_init_join);
3871
3872void
3873terminate (...)
3874 CODE:
3875 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3876
3877void
3878cancel (...)
3879 CODE:
3880 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3881
3882int
3883safe_cancel (Coro::State self, ...)
3884 C_ARGS: aTHX_ self, &ST (1), items - 1
3885
3886void
3887schedule (...)
3888 CODE:
3889 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3890
3891void
3892schedule_to (...)
3893 CODE:
3894 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3895
3896void
3897cede_to (...)
3898 CODE:
3899 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3900
3901void
3902cede (...)
3903 CODE:
3904 CORO_EXECUTE_SLF_XS (slf_init_cede);
3905
3906void
3907cede_notself (...)
3908 CODE:
3909 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1787 3910
1788void 3911void
1789_set_current (SV *current) 3912_set_current (SV *current)
1790 PROTOTYPE: $ 3913 PROTOTYPE: $
1791 CODE: 3914 CODE:
1792 SvREFCNT_dec (SvRV (coro_current)); 3915 SvREFCNT_dec (SvRV (coro_current));
1793 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3916 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3917
3918void
3919_set_readyhook (SV *hook)
3920 PROTOTYPE: $
3921 CODE:
3922 SvREFCNT_dec (coro_readyhook);
3923 SvGETMAGIC (hook);
3924 if (SvOK (hook))
3925 {
3926 coro_readyhook = newSVsv (hook);
3927 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3928 }
3929 else
3930 {
3931 coro_readyhook = 0;
3932 CORO_READYHOOK = 0;
3933 }
1794 3934
1795int 3935int
1796prio (Coro::State coro, int newprio = 0) 3936prio (Coro::State coro, int newprio = 0)
3937 PROTOTYPE: $;$
1797 ALIAS: 3938 ALIAS:
1798 nice = 1 3939 nice = 1
1799 CODE: 3940 CODE:
1800{ 3941{
1801 RETVAL = coro->prio; 3942 RETVAL = coro->prio;
… …
1803 if (items > 1) 3944 if (items > 1)
1804 { 3945 {
1805 if (ix) 3946 if (ix)
1806 newprio = coro->prio - newprio; 3947 newprio = coro->prio - newprio;
1807 3948
1808 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3949 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1809 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3950 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1810 3951
1811 coro->prio = newprio; 3952 coro->prio = newprio;
1812 } 3953 }
1813} 3954}
1814 OUTPUT: 3955 OUTPUT:
… …
1816 3957
1817SV * 3958SV *
1818ready (SV *self) 3959ready (SV *self)
1819 PROTOTYPE: $ 3960 PROTOTYPE: $
1820 CODE: 3961 CODE:
1821 RETVAL = boolSV (api_ready (self)); 3962 RETVAL = boolSV (api_ready (aTHX_ self));
1822 OUTPUT: 3963 OUTPUT:
1823 RETVAL 3964 RETVAL
1824 3965
1825int 3966int
1826nready (...) 3967nready (...)
… …
1829 RETVAL = coro_nready; 3970 RETVAL = coro_nready;
1830 OUTPUT: 3971 OUTPUT:
1831 RETVAL 3972 RETVAL
1832 3973
1833void 3974void
1834throw (Coro::State self, SV *throw = &PL_sv_undef) 3975suspend (Coro::State self)
1835 PROTOTYPE: $;$ 3976 PROTOTYPE: $
1836 CODE: 3977 CODE:
1837 SvREFCNT_dec (self->throw); 3978 self->flags |= CF_SUSPENDED;
1838 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1839 3979
1840# for async_pool speedup
1841void 3980void
1842_pool_1 (SV *cb) 3981resume (Coro::State self)
3982 PROTOTYPE: $
1843 CODE: 3983 CODE:
1844{ 3984 self->flags &= ~CF_SUSPENDED;
1845 struct coro *coro = SvSTATE (coro_current);
1846 HV *hv = (HV *)SvRV (coro_current);
1847 AV *defav = GvAV (PL_defgv);
1848 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1849 AV *invoke_av;
1850 int i, len;
1851 3985
1852 if (!invoke) 3986void
1853 croak ("\3async_pool terminate\2\n"); 3987_pool_handler (...)
3988 CODE:
3989 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1854 3990
1855 SvREFCNT_dec (coro->saved_deffh); 3991void
1856 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3992async_pool (SV *cv, ...)
3993 PROTOTYPE: &@
3994 PPCODE:
3995{
3996 HV *hv = (HV *)av_pop (av_async_pool);
3997 AV *av = newAV ();
3998 SV *cb = ST (0);
3999 int i;
1857 4000
1858 hv_store (hv, "desc", sizeof ("desc") - 1, 4001 av_extend (av, items - 2);
1859 newSVpvn (strpair ("[async_pool]")), 0); 4002 for (i = 1; i < items; ++i)
4003 av_push (av, SvREFCNT_inc_NN (ST (i)));
1860 4004
1861 invoke_av = (AV *)SvRV (invoke); 4005 if ((SV *)hv == &PL_sv_undef)
1862 len = av_len (invoke_av);
1863
1864 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1865
1866 if (len > 0)
1867 { 4006 {
1868 av_fill (defav, len - 1); 4007 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
1869 for (i = 0; i < len; ++i) 4008 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
1870 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 4009 SvREFCNT_dec (sv);
1871 } 4010 }
1872 4011
4012 {
4013 struct coro *coro = SvSTATE_hv (hv);
4014
4015 assert (!coro->invoke_cb);
4016 assert (!coro->invoke_av);
4017 coro->invoke_cb = SvREFCNT_inc (cb);
4018 coro->invoke_av = av;
4019 }
4020
4021 api_ready (aTHX_ (SV *)hv);
4022
4023 if (GIMME_V != G_VOID)
4024 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4025 else
1873 SvREFCNT_dec (invoke); 4026 SvREFCNT_dec (hv);
1874} 4027}
1875 4028
1876void 4029SV *
1877_pool_2 (SV *cb) 4030rouse_cb ()
4031 PROTOTYPE:
1878 CODE: 4032 CODE:
1879{ 4033 RETVAL = coro_new_rouse_cb (aTHX);
1880 struct coro *coro = SvSTATE (coro_current);
1881
1882 sv_setsv (cb, &PL_sv_undef);
1883
1884 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1885 coro->saved_deffh = 0;
1886
1887 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1888 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1889 croak ("\3async_pool terminate\2\n");
1890
1891 av_clear (GvAV (PL_defgv));
1892 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1893 newSVpvn (strpair ("[async_pool idle]")), 0);
1894
1895 coro->prio = 0;
1896
1897 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898 api_trace (coro_current, 0);
1899
1900 av_push (av_async_pool, newSVsv (coro_current));
1901}
1902
1903
1904MODULE = Coro::State PACKAGE = Coro::AIO
1905
1906SV *
1907_get_state ()
1908 CODE:
1909{
1910 struct io_state *data;
1911
1912 RETVAL = newSV (sizeof (struct io_state));
1913 data = (struct io_state *)SvPVX (RETVAL);
1914 SvCUR_set (RETVAL, sizeof (struct io_state));
1915 SvPOK_only (RETVAL);
1916
1917 data->errorno = errno;
1918 data->laststype = PL_laststype;
1919 data->laststatval = PL_laststatval;
1920 data->statcache = PL_statcache;
1921}
1922 OUTPUT: 4034 OUTPUT:
1923 RETVAL 4035 RETVAL
1924 4036
1925void 4037void
1926_set_state (char *data_) 4038rouse_wait (...)
4039 PROTOTYPE: ;$
4040 PPCODE:
4041 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4042
4043void
4044on_enter (SV *block)
4045 ALIAS:
4046 on_leave = 1
1927 PROTOTYPE: $ 4047 PROTOTYPE: &
1928 CODE: 4048 CODE:
1929{ 4049{
1930 struct io_state *data = (void *)data_; 4050 struct coro *coro = SvSTATE_current;
4051 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1931 4052
1932 errno = data->errorno; 4053 block = s_get_cv_croak (block);
1933 PL_laststype = data->laststype;
1934 PL_laststatval = data->laststatval;
1935 PL_statcache = data->statcache;
1936}
1937 4054
4055 if (!*avp)
4056 *avp = newAV ();
4057
4058 av_push (*avp, SvREFCNT_inc (block));
4059
4060 if (!ix)
4061 on_enterleave_call (aTHX_ block);
4062
4063 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4064 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4065 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4066}
4067
4068
4069MODULE = Coro::State PACKAGE = PerlIO::cede
4070
4071BOOT:
4072 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4073
4074
4075MODULE = Coro::State PACKAGE = Coro::Semaphore
4076
4077SV *
4078new (SV *klass, SV *count = 0)
4079 CODE:
4080{
4081 int semcnt = 1;
4082
4083 if (count)
4084 {
4085 SvGETMAGIC (count);
4086
4087 if (SvOK (count))
4088 semcnt = SvIV (count);
4089 }
4090
4091 RETVAL = sv_bless (
4092 coro_waitarray_new (aTHX_ semcnt),
4093 GvSTASH (CvGV (cv))
4094 );
4095}
4096 OUTPUT:
4097 RETVAL
4098
4099# helper for Coro::Channel and others
4100SV *
4101_alloc (int count)
4102 CODE:
4103 RETVAL = coro_waitarray_new (aTHX_ count);
4104 OUTPUT:
4105 RETVAL
4106
4107SV *
4108count (SV *self)
4109 CODE:
4110 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4111 OUTPUT:
4112 RETVAL
4113
4114void
4115up (SV *self, int adjust = 1)
4116 ALIAS:
4117 adjust = 1
4118 CODE:
4119 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4120
4121void
4122down (...)
4123 CODE:
4124 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4125
4126void
4127wait (...)
4128 CODE:
4129 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4130
4131void
4132try (SV *self)
4133 PPCODE:
4134{
4135 AV *av = (AV *)SvRV (self);
4136 SV *count_sv = AvARRAY (av)[0];
4137 IV count = SvIVX (count_sv);
4138
4139 if (count > 0)
4140 {
4141 --count;
4142 SvIVX (count_sv) = count;
4143 XSRETURN_YES;
4144 }
4145 else
4146 XSRETURN_NO;
4147}
4148
4149void
4150waiters (SV *self)
4151 PPCODE:
4152{
4153 AV *av = (AV *)SvRV (self);
4154 int wcount = AvFILLp (av) + 1 - 1;
4155
4156 if (GIMME_V == G_SCALAR)
4157 XPUSHs (sv_2mortal (newSViv (wcount)));
4158 else
4159 {
4160 int i;
4161 EXTEND (SP, wcount);
4162 for (i = 1; i <= wcount; ++i)
4163 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4164 }
4165}
4166
4167MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4168
4169void
4170_may_delete (SV *sem, int count, unsigned int extra_refs)
4171 PPCODE:
4172{
4173 AV *av = (AV *)SvRV (sem);
4174
4175 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4176 && AvFILLp (av) == 0 /* no waiters, just count */
4177 && SvIV (AvARRAY (av)[0]) == count)
4178 XSRETURN_YES;
4179
4180 XSRETURN_NO;
4181}
4182
4183MODULE = Coro::State PACKAGE = Coro::Signal
4184
4185SV *
4186new (SV *klass)
4187 CODE:
4188 RETVAL = sv_bless (
4189 coro_waitarray_new (aTHX_ 0),
4190 GvSTASH (CvGV (cv))
4191 );
4192 OUTPUT:
4193 RETVAL
4194
4195void
4196wait (...)
4197 CODE:
4198 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4199
4200void
4201broadcast (SV *self)
4202 CODE:
4203{
4204 AV *av = (AV *)SvRV (self);
4205 coro_signal_wake (aTHX_ av, AvFILLp (av));
4206}
4207
4208void
4209send (SV *self)
4210 CODE:
4211{
4212 AV *av = (AV *)SvRV (self);
4213
4214 if (AvFILLp (av))
4215 coro_signal_wake (aTHX_ av, 1);
4216 else
4217 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4218}
4219
4220IV
4221awaited (SV *self)
4222 CODE:
4223 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4224 OUTPUT:
4225 RETVAL
4226
4227
4228MODULE = Coro::State PACKAGE = Coro::AnyEvent
4229
4230BOOT:
4231 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4232
4233void
4234_schedule (...)
4235 CODE:
4236{
4237 static int incede;
4238
4239 api_cede_notself (aTHX);
4240
4241 ++incede;
4242 while (coro_nready >= incede && api_cede (aTHX))
4243 ;
4244
4245 sv_setsv (sv_activity, &PL_sv_undef);
4246 if (coro_nready >= incede)
4247 {
4248 PUSHMARK (SP);
4249 PUTBACK;
4250 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4251 }
4252
4253 --incede;
4254}
4255
4256
4257MODULE = Coro::State PACKAGE = Coro::AIO
4258
4259void
4260_register (char *target, char *proto, SV *req)
4261 CODE:
4262{
4263 SV *req_cv = s_get_cv_croak (req);
4264 /* newXSproto doesn't return the CV on 5.8 */
4265 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4266 sv_setpv ((SV *)slf_cv, proto);
4267 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4268}
4269
4270MODULE = Coro::State PACKAGE = Coro::Select
4271
4272void
4273patch_pp_sselect ()
4274 CODE:
4275 if (!coro_old_pp_sselect)
4276 {
4277 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4278 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4279 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4280 }
4281
4282void
4283unpatch_pp_sselect ()
4284 CODE:
4285 if (coro_old_pp_sselect)
4286 {
4287 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4288 coro_old_pp_sselect = 0;
4289 }
4290

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