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Comparing Coro/Coro/State.xs (file contents):
Revision 1.206 by root, Tue Oct 9 15:45:26 2007 UTC vs.
Revision 1.409 by root, Sun Jun 12 04:29:15 2011 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>
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
15 37
16#ifdef HAVE_MMAP 38#ifdef 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
… …
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
49#define PERL_VERSION_ATLEAST(a,b,c) \
50 (PERL_REVISION > (a) \
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
88 67
89#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
91#endif 70#endif
92 71
… …
99# define CORO_PREFER_PERL_FUNCTIONS 0 78# define CORO_PREFER_PERL_FUNCTIONS 0
100#endif 79#endif
101 80
102/* The next macros try to return the current stack pointer, in an as 81/* The next macros try to return the current stack pointer, in an as
103 * portable way as possible. */ 82 * 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 83#if __GNUC__ >= 4
110# define attribute(x) __attribute__(x) 84# define dSTACKLEVEL int stacklevel_dummy
111# define BARRIER __asm__ __volatile__ ("" : : : "memory") 85# define STACKLEVEL __builtin_frame_address (0)
112# define expect(expr,value) __builtin_expect ((expr),(value))
113#else 86#else
114# define attribute(x) 87# define dSTACKLEVEL volatile void *stacklevel
115# define BARRIER 88# define STACKLEVEL ((void *)&stacklevel)
116# define expect(expr,value) (expr)
117#endif 89#endif
118 90
119#define expect_false(expr) expect ((expr) != 0, 0) 91#define IN_DESTRUCT PL_dirty
120#define expect_true(expr) expect ((expr) != 0, 1)
121
122#define NOINLINE attribute ((noinline))
123 92
124#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
125 95
126#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
127static perl_mutex coro_mutex; 97# if CORO_PTHREAD
128# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 98static void *coro_thx;
129# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 99# endif
130#else
131# define LOCK (void)0
132# define UNLOCK (void)0
133#endif 100#endif
134 101
135#define strpair(const) const, sizeof (const) - 1 102/* used in state.h */
103#define VAR(name,type) VARx(name, PL_ ## name, type)
136 104
137/* helper storage struct for Coro::AIO */ 105#ifdef __linux
138struct io_state 106# include <time.h> /* for timespec */
139{ 107# include <syscall.h> /* for SYS_* */
140 int errorno; 108# ifdef SYS_clock_gettime
141 I32 laststype; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
142 int laststatval; 110# define CORO_CLOCK_MONOTONIC 1
143 Stat_t statcache; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
144}; 112# endif
113#endif
145 114
115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
122
123static U32 cctx_gen;
146static size_t coro_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
147static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
148static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
149static JMPENV *main_top_env; 127static JMPENV *main_top_env;
150static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
151static SV *coro_mortal; /* will be freed after next transfer */ 129static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
130
131static AV *av_destroy; /* destruction queue */
132static SV *sv_manager; /* the manager coro */
133static SV *sv_idle; /* $Coro::idle */
152 134
153static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
154static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
155 137static SV *rv_diehook;
138static SV *rv_warnhook;
156static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
157static SV *sv_diehook;
158static SV *sv_warnhook;
159 140
160/* async_pool helper stuff */ 141/* async_pool helper stuff */
161static SV *sv_pool_rss; 142static SV *sv_pool_rss;
162static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
163static AV *av_async_pool; 145static AV *av_async_pool; /* idle pool */
146static SV *sv_Coro; /* class string */
147static CV *cv_pool_handler;
148
149/* Coro::AnyEvent */
150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
164 157
165static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
166static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
167 160
168enum { 161enum
162{
169 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
170 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
171 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
172 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
173 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
174 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 168 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
175}; 169};
176 170
177/* this is a structure representing a c-level coroutine */ 171/* this is a structure representing a c-level coroutine */
178typedef struct coro_cctx { 172typedef struct coro_cctx
173{
179 struct coro_cctx *next; 174 struct coro_cctx *next;
180 175
181 /* the stack */ 176 /* the stack */
182 void *sptr; 177 void *sptr;
183 size_t ssize; 178 size_t ssize;
… …
186 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 181 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 182 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188 JMPENV *top_env; 183 JMPENV *top_env;
189 coro_context cctx; 184 coro_context cctx;
190 185
186 U32 gen;
191#if CORO_USE_VALGRIND 187#if CORO_USE_VALGRIND
192 int valgrind_id; 188 int valgrind_id;
193#endif 189#endif
194 unsigned char flags; 190 unsigned char flags;
195} coro_cctx; 191} coro_cctx;
196 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
197enum { 199enum
200{
198 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
199 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
200 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
201 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
202}; 207};
203 208
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct { 210typedef struct
206 SV *defsv; 211{
207 AV *defav;
208 SV *errsv;
209 SV *irsgv;
210#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
211# include "state.h" 213# include "state.h"
212#undef VAR 214#undef VARx
213} perl_slots; 215} perl_slots;
214 216
217// 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)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
216 219
217/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
218struct coro { 221struct coro
222{
219 /* the c coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
220 coro_cctx *cctx; 224 coro_cctx *cctx;
221 225
222 /* process data */ 226 /* ready queue */
227 struct coro *next_ready;
228
229 /* state data */
230 struct CoroSLF slf_frame; /* saved slf frame */
223 AV *mainstack; 231 AV *mainstack;
224 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
225 233
234 CV *startcv; /* the CV to execute */
226 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
227 int refcnt; /* coroutines are refcounted, yes */
228 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
229 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
230 238
231 /* statistics */ 239 /* statistics */
232 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
233 241
234 /* coro process data */ 242 /* coro process data */
235 int prio; 243 int prio;
236 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
237 248
238 /* async_pool */ 249 /* async_pool */
239 SV *saved_deffh; 250 SV *saved_deffh;
251 SV *invoke_cb;
252 AV *invoke_av;
253
254 /* on_enter/on_leave */
255 AV *on_enter;
256 AV *on_leave;
257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
240 263
241 /* linked list */ 264 /* linked list */
242 struct coro *next, *prev; 265 struct coro *next, *prev;
243}; 266};
244 267
245typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
246typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
247 270
271/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */
273/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */
275
248/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
249 277
250#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
251#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
252#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
253#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
254#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
255#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
256 284
257/* for Coro.pm */ 285/* for Coro.pm */
258static SV *coro_current; 286static SV *coro_current;
259static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 287static SV *coro_readyhook;
260static int coro_nready; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
289static CV *cv_coro_run;
261static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 #ifndef CORO_JIT_TYPE
297 #if __x86_64 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
298 #define CORO_JIT_TYPE "amd64-unix"
299 typedef void (*load_save_perl_slots_type)(perl_slots *);
300 #elif __i386 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
301 #define CORO_JIT_TYPE "x86-unix"
302 typedef void (*load_save_perl_slots_type)(perl_slots *);
303 #else
304 x x x x
305 #undef CORO_JIT
306 #endif
307 #endif
308#endif
309
310#if CORO_JIT
311static load_save_perl_slots_type load_perl_slots, save_perl_slots;
312#endif
313
314/** Coro::Select ************************************************************/
315
316static OP *(*coro_old_pp_sselect) (pTHX);
317static SV *coro_select_select;
318
319/* horrible hack, but if it works... */
320static OP *
321coro_pp_sselect (pTHX)
322{
323 dSP;
324 PUSHMARK (SP - 4); /* fake argument list */
325 XPUSHs (coro_select_select);
326 PUTBACK;
327
328 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
329 PL_op->op_flags |= OPf_STACKED;
330 PL_op->op_private = 0;
331 return PL_ppaddr [OP_ENTERSUB](aTHX);
332}
333
334/** time stuff **************************************************************/
335
336#ifdef HAS_GETTIMEOFDAY
337
338ECB_INLINE void
339coro_u2time (pTHX_ UV ret[2])
340{
341 struct timeval tv;
342 gettimeofday (&tv, 0);
343
344 ret [0] = tv.tv_sec;
345 ret [1] = tv.tv_usec;
346}
347
348ECB_INLINE double
349coro_nvtime ()
350{
351 struct timeval tv;
352 gettimeofday (&tv, 0);
353
354 return tv.tv_sec + tv.tv_usec * 1e-6;
355}
356
357ECB_INLINE void
358time_init (pTHX)
359{
360 nvtime = coro_nvtime;
361 u2time = coro_u2time;
362}
363
364#else
365
366ECB_INLINE void
367time_init (pTHX)
368{
369 SV **svp;
370
371 require_pv ("Time/HiRes.pm");
372
373 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
374
375 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
376 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
377
378 nvtime = INT2PTR (double (*)(), SvIV (*svp));
379
380 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
381 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
382}
383
384#endif
262 385
263/** lowlevel stuff **********************************************************/ 386/** lowlevel stuff **********************************************************/
264 387
265static SV * 388static SV * ecb_noinline
266coro_get_sv (const char *name, int create) 389coro_get_sv (pTHX_ const char *name, int create)
267{ 390{
268#if PERL_VERSION_ATLEAST (5,9,0) 391#if PERL_VERSION_ATLEAST (5,10,0)
269 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 392 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
270 get_sv (name, create); 393 get_sv (name, create);
271#endif 394#endif
272 return get_sv (name, create); 395 return get_sv (name, create);
273} 396}
274 397
275static AV * 398static AV * ecb_noinline
276coro_get_av (const char *name, int create) 399coro_get_av (pTHX_ const char *name, int create)
277{ 400{
278#if PERL_VERSION_ATLEAST (5,9,0) 401#if PERL_VERSION_ATLEAST (5,10,0)
279 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 402 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
280 get_av (name, create); 403 get_av (name, create);
281#endif 404#endif
282 return get_av (name, create); 405 return get_av (name, create);
283} 406}
284 407
285static HV * 408static HV * ecb_noinline
286coro_get_hv (const char *name, int create) 409coro_get_hv (pTHX_ const char *name, int create)
287{ 410{
288#if PERL_VERSION_ATLEAST (5,9,0) 411#if PERL_VERSION_ATLEAST (5,10,0)
289 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 412 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
290 get_hv (name, create); 413 get_hv (name, create);
291#endif 414#endif
292 return get_hv (name, create); 415 return get_hv (name, create);
293} 416}
294 417
295static AV * 418ECB_INLINE void
419coro_times_update ()
420{
421#ifdef coro_clock_gettime
422 struct timespec ts;
423
424 ts.tv_sec = ts.tv_nsec = 0;
425 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
426 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
427
428 ts.tv_sec = ts.tv_nsec = 0;
429 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
430 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
431#else
432 dTHX;
433 UV tv[2];
434
435 u2time (aTHX_ tv);
436 time_real [0] = tv [0];
437 time_real [1] = tv [1] * 1000;
438#endif
439}
440
441ECB_INLINE void
442coro_times_add (struct coro *c)
443{
444 c->t_real [1] += time_real [1];
445 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
446 c->t_real [0] += time_real [0];
447
448 c->t_cpu [1] += time_cpu [1];
449 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
450 c->t_cpu [0] += time_cpu [0];
451}
452
453ECB_INLINE void
454coro_times_sub (struct coro *c)
455{
456 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
457 c->t_real [1] -= time_real [1];
458 c->t_real [0] -= time_real [0];
459
460 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
461 c->t_cpu [1] -= time_cpu [1];
462 c->t_cpu [0] -= time_cpu [0];
463}
464
465/*****************************************************************************/
466/* magic glue */
467
468#define CORO_MAGIC_type_cv 26
469#define CORO_MAGIC_type_state PERL_MAGIC_ext
470
471#define CORO_MAGIC_NN(sv, type) \
472 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
473 ? SvMAGIC (sv) \
474 : mg_find (sv, type))
475
476#define CORO_MAGIC(sv, type) \
477 (ecb_expect_true (SvMAGIC (sv)) \
478 ? CORO_MAGIC_NN (sv, type) \
479 : 0)
480
481#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
482#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
483
484ECB_INLINE MAGIC *
485SvSTATEhv_p (pTHX_ SV *coro)
486{
487 MAGIC *mg;
488
489 if (ecb_expect_true (
490 SvTYPE (coro) == SVt_PVHV
491 && (mg = CORO_MAGIC_state (coro))
492 && mg->mg_virtual == &coro_state_vtbl
493 ))
494 return mg;
495
496 return 0;
497}
498
499ECB_INLINE struct coro *
500SvSTATE_ (pTHX_ SV *coro)
501{
502 MAGIC *mg;
503
504 if (SvROK (coro))
505 coro = SvRV (coro);
506
507 mg = SvSTATEhv_p (aTHX_ coro);
508 if (!mg)
509 croak ("Coro::State object required");
510
511 return (struct coro *)mg->mg_ptr;
512}
513
514#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
515
516/* faster than SvSTATE, but expects a coroutine hv */
517#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
518#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
519
520/*****************************************************************************/
521/* padlist management and caching */
522
523ECB_INLINE AV *
296coro_clone_padlist (pTHX_ CV *cv) 524coro_derive_padlist (pTHX_ CV *cv)
297{ 525{
298 AV *padlist = CvPADLIST (cv); 526 AV *padlist = CvPADLIST (cv);
299 AV *newpadlist, *newpad; 527 AV *newpadlist, *newpad;
300 528
301 newpadlist = newAV (); 529 newpadlist = newAV ();
302 AvREAL_off (newpadlist); 530 AvREAL_off (newpadlist);
303#if PERL_VERSION_ATLEAST (5,9,0) 531#if PERL_VERSION_ATLEAST (5,10,0)
304 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 532 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305#else 533#else
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 534 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307#endif 535#endif
308 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 536 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309 --AvFILLp (padlist); 537 --AvFILLp (padlist);
310 538
311 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 539 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
312 av_store (newpadlist, 1, (SV *)newpad); 540 av_store (newpadlist, 1, (SV *)newpad);
313 541
314 return newpadlist; 542 return newpadlist;
315} 543}
316 544
317static void 545ECB_INLINE void
318free_padlist (pTHX_ AV *padlist) 546free_padlist (pTHX_ AV *padlist)
319{ 547{
320 /* may be during global destruction */ 548 /* may be during global destruction */
321 if (SvREFCNT (padlist)) 549 if (!IN_DESTRUCT)
322 { 550 {
323 I32 i = AvFILLp (padlist); 551 I32 i = AvFILLp (padlist);
324 while (i >= 0) 552
553 while (i > 0) /* special-case index 0 */
325 { 554 {
326 SV **svp = av_fetch (padlist, i--, FALSE); 555 /* we try to be extra-careful here */
327 if (svp) 556 AV *av = (AV *)AvARRAY (padlist)[i--];
328 { 557 I32 j = AvFILLp (av);
329 SV *sv; 558
330 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 559 while (j >= 0)
560 SvREFCNT_dec (AvARRAY (av)[j--]);
561
562 AvFILLp (av) = -1;
331 SvREFCNT_dec (sv); 563 SvREFCNT_dec (av);
332
333 SvREFCNT_dec (*svp);
334 }
335 } 564 }
336 565
566 SvREFCNT_dec (AvARRAY (padlist)[0]);
567
568 AvFILLp (padlist) = -1;
337 SvREFCNT_dec ((SV*)padlist); 569 SvREFCNT_dec ((SV*)padlist);
338 } 570 }
339} 571}
340 572
341static int 573static int
342coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 574coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
343{ 575{
344 AV *padlist; 576 AV *padlist;
345 AV *av = (AV *)mg->mg_obj; 577 AV *av = (AV *)mg->mg_obj;
578
579 /* perl manages to free our internal AV and _then_ call us */
580 if (IN_DESTRUCT)
581 return 0;
346 582
347 /* casting is fun. */ 583 /* casting is fun. */
348 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 584 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349 free_padlist (aTHX_ padlist); 585 free_padlist (aTHX_ padlist);
350 586
351 SvREFCNT_dec (av); 587 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352 588
353 return 0; 589 return 0;
354} 590}
355 591
356#define PERL_MAGIC_coro PERL_MAGIC_ext 592static MGVTBL coro_cv_vtbl = {
357 593 0, 0, 0, 0,
358static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 594 coro_cv_free
359 595};
360#define CORO_MAGIC(cv) \
361 SvMAGIC (cv) \
362 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
363 ? SvMAGIC (cv) \
364 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
365 : 0
366
367static struct coro *
368SvSTATE_ (pTHX_ SV *coro)
369{
370 HV *stash;
371 MAGIC *mg;
372
373 if (SvROK (coro))
374 coro = SvRV (coro);
375
376 if (expect_false (SvTYPE (coro) != SVt_PVHV))
377 croak ("Coro::State object required");
378
379 stash = SvSTASH (coro);
380 if (expect_false (stash != coro_stash && stash != coro_state_stash))
381 {
382 /* very slow, but rare, check */
383 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384 croak ("Coro::State object required");
385 }
386
387 mg = CORO_MAGIC (coro);
388 return (struct coro *)mg->mg_ptr;
389}
390
391#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392 596
393/* the next two functions merely cache the padlists */ 597/* the next two functions merely cache the padlists */
394static void 598ECB_INLINE void
395get_padlist (pTHX_ CV *cv) 599get_padlist (pTHX_ CV *cv)
396{ 600{
397 MAGIC *mg = CORO_MAGIC (cv); 601 MAGIC *mg = CORO_MAGIC_cv (cv);
398 AV *av; 602 AV *av;
399 603
400 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 604 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 605 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402 else 606 else
403 { 607 {
404#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
405 /* this is probably cleaner, but also slower? */ 609 /* this is probably cleaner? but also slower! */
610 /* in practise, it seems to be less stable */
406 CV *cp = Perl_cv_clone (cv); 611 CV *cp = Perl_cv_clone (aTHX_ cv);
407 CvPADLIST (cv) = CvPADLIST (cp); 612 CvPADLIST (cv) = CvPADLIST (cp);
408 CvPADLIST (cp) = 0; 613 CvPADLIST (cp) = 0;
409 SvREFCNT_dec (cp); 614 SvREFCNT_dec (cp);
410#else 615#else
411 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 616 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
412#endif 617#endif
413 } 618 }
414} 619}
415 620
416static void 621ECB_INLINE void
417put_padlist (pTHX_ CV *cv) 622put_padlist (pTHX_ CV *cv)
418{ 623{
419 MAGIC *mg = CORO_MAGIC (cv); 624 MAGIC *mg = CORO_MAGIC_cv (cv);
420 AV *av; 625 AV *av;
421 626
422 if (expect_false (!mg)) 627 if (ecb_expect_false (!mg))
423 { 628 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426 mg->mg_virtual = &vtbl_coro;
427 mg->mg_obj = (SV *)newAV ();
428 }
429 629
430 av = (AV *)mg->mg_obj; 630 av = (AV *)mg->mg_obj;
431 631
432 if (expect_false (AvFILLp (av) >= AvMAX (av))) 632 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
433 av_extend (av, AvMAX (av) + 1); 633 av_extend (av, AvFILLp (av) + 1);
434 634
435 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 635 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
436} 636}
437 637
438/** load & save, init *******************************************************/ 638/** load & save, init *******************************************************/
639
640/* swap sv heads, at least logically */
641static void
642swap_svs (pTHX_ Coro__State c)
643{
644 int i;
645
646 for (i = 0; i <= AvFILLp (c->swap_sv); )
647 {
648 SV *a = AvARRAY (c->swap_sv)[i++];
649 SV *b = AvARRAY (c->swap_sv)[i++];
650
651 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
652 SV tmp;
653
654 /* swap sv_any */
655 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
656
657 /* swap sv_flags */
658 SvFLAGS (&tmp) = SvFLAGS (a);
659 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
660 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
661
662#if PERL_VERSION_ATLEAST (5,10,0)
663 /* perl 5.10 complicates this _quite_ a bit, but it also is
664 * much faster, so no quarrels here. alternatively, we could
665 * sv_upgrade to avoid this.
666 */
667 {
668 /* swap sv_u */
669 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
670
671 /* if SvANY points to the head, we need to adjust the pointers,
672 * as the pointer for a still points to b, and maybe vice versa.
673 */
674 #define svany_in_head(type) \
675 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
676
677 if (svany_in_head (SvTYPE (a)))
678 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
679
680 if (svany_in_head (SvTYPE (b)))
681 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
682 }
683#endif
684 }
685}
686
687#define SWAP_SVS(coro) \
688 if (ecb_expect_false ((coro)->swap_sv)) \
689 swap_svs (aTHX_ (coro))
690
691static void
692on_enterleave_call (pTHX_ SV *cb);
439 693
440static void 694static void
441load_perl (pTHX_ Coro__State c) 695load_perl (pTHX_ Coro__State c)
442{ 696{
443 perl_slots *slot = c->slot; 697 perl_slots *slot = c->slot;
444 c->slot = 0; 698 c->slot = 0;
445 699
446 PL_mainstack = c->mainstack; 700 PL_mainstack = c->mainstack;
447 701
448 GvSV (PL_defgv) = slot->defsv; 702#if CORO_JIT
449 GvAV (PL_defgv) = slot->defav; 703 load_perl_slots (slot);
450 GvSV (PL_errgv) = slot->errsv; 704#else
451 GvSV (irsgv) = slot->irsgv;
452
453 #define VAR(name,type) PL_ ## name = slot->name; 705 #define VARx(name,expr,type) expr = slot->name;
454 # include "state.h" 706 # include "state.h"
455 #undef VAR 707 #undef VARx
456 708#endif
457 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459 709
460 { 710 {
461 dSP; 711 dSP;
462 712
463 CV *cv; 713 CV *cv;
464 714
465 /* now do the ugly restore mess */ 715 /* now do the ugly restore mess */
466 while (expect_true (cv = (CV *)POPs)) 716 while (ecb_expect_true (cv = (CV *)POPs))
467 { 717 {
468 put_padlist (aTHX_ cv); /* mark this padlist as available */ 718 put_padlist (aTHX_ cv); /* mark this padlist as available */
469 CvDEPTH (cv) = PTR2IV (POPs); 719 CvDEPTH (cv) = PTR2IV (POPs);
470 CvPADLIST (cv) = (AV *)POPs; 720 CvPADLIST (cv) = (AV *)POPs;
471 } 721 }
472 722
473 PUTBACK; 723 PUTBACK;
474 } 724 }
725
726 slf_frame = c->slf_frame;
727 CORO_THROW = c->except;
728
729 if (ecb_expect_false (enable_times))
730 {
731 if (ecb_expect_false (!times_valid))
732 coro_times_update ();
733
734 coro_times_sub (c);
735 }
736
737 if (ecb_expect_false (c->on_enter))
738 {
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
743 }
744
745 SWAP_SVS (c);
475} 746}
476 747
477static void 748static void
478save_perl (pTHX_ Coro__State c) 749save_perl (pTHX_ Coro__State c)
479{ 750{
751 SWAP_SVS (c);
752
753 if (ecb_expect_false (c->on_leave))
754 {
755 int i;
756
757 for (i = AvFILLp (c->on_leave); i >= 0; --i)
758 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
759 }
760
761 times_valid = 0;
762
763 if (ecb_expect_false (enable_times))
764 {
765 coro_times_update (); times_valid = 1;
766 coro_times_add (c);
767 }
768
769 c->except = CORO_THROW;
770 c->slf_frame = slf_frame;
771
480 { 772 {
481 dSP; 773 dSP;
482 I32 cxix = cxstack_ix; 774 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 775 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 776 PERL_SI *top_si = PL_curstackinfo;
… …
490 782
491 XPUSHs (Nullsv); 783 XPUSHs (Nullsv);
492 /* this loop was inspired by pp_caller */ 784 /* this loop was inspired by pp_caller */
493 for (;;) 785 for (;;)
494 { 786 {
495 while (expect_true (cxix >= 0)) 787 while (ecb_expect_true (cxix >= 0))
496 { 788 {
497 PERL_CONTEXT *cx = &ccstk[cxix--]; 789 PERL_CONTEXT *cx = &ccstk[cxix--];
498 790
499 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 791 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
500 { 792 {
501 CV *cv = cx->blk_sub.cv; 793 CV *cv = cx->blk_sub.cv;
502 794
503 if (expect_true (CvDEPTH (cv))) 795 if (ecb_expect_true (CvDEPTH (cv)))
504 { 796 {
505 EXTEND (SP, 3); 797 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 798 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 799 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 800 PUSHs ((SV *)cv);
509 801
510 CvDEPTH (cv) = 0; 802 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 803 get_padlist (aTHX_ cv);
512 } 804 }
513 } 805 }
514 } 806 }
515 807
516 if (expect_true (top_si->si_type == PERLSI_MAIN)) 808 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
517 break; 809 break;
518 810
519 top_si = top_si->si_prev; 811 top_si = top_si->si_prev;
520 ccstk = top_si->si_cxstack; 812 ccstk = top_si->si_cxstack;
521 cxix = top_si->si_cxix; 813 cxix = top_si->si_cxix;
… …
523 815
524 PUTBACK; 816 PUTBACK;
525 } 817 }
526 818
527 /* allocate some space on the context stack for our purposes */ 819 /* allocate some space on the context stack for our purposes */
528 /* we manually unroll here, as usually 2 slots is enough */ 820 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
529 if (SLOT_COUNT >= 1) CXINC;
530 if (SLOT_COUNT >= 2) CXINC;
531 if (SLOT_COUNT >= 3) CXINC;
532 { 821 {
533 int i; 822 unsigned int i;
823
534 for (i = 3; i < SLOT_COUNT; ++i) 824 for (i = 0; i < SLOT_COUNT; ++i)
535 CXINC; 825 CXINC;
536 } 826
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 827 cxstack_ix -= SLOT_COUNT; /* undo allocation */
828 }
538 829
539 c->mainstack = PL_mainstack; 830 c->mainstack = PL_mainstack;
540 831
541 { 832 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 833 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543 834
544 slot->defav = GvAV (PL_defgv); 835#if CORO_JIT
545 slot->defsv = DEFSV; 836 save_perl_slots (slot);
546 slot->errsv = ERRSV; 837#else
547 slot->irsgv = GvSV (irsgv);
548
549 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VARx(name,expr,type) slot->name = expr;
550 # include "state.h" 839 # include "state.h"
551 #undef VAR 840 #undef VARx
841#endif
552 } 842 }
553} 843}
554 844
555/* 845/*
556 * allocate various perl stacks. This is an exact copy 846 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 847 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 848 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 849 * not usually need a lot of stackspace.
560 */ 850 */
561#if CORO_PREFER_PERL_FUNCTIONS 851#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 852# define coro_init_stacks(thx) init_stacks ()
563#else 853#else
564static void 854static void
565coro_init_stacks (pTHX) 855coro_init_stacks (pTHX)
566{ 856{
567 PL_curstackinfo = new_stackinfo(32, 8); 857 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
568 PL_curstackinfo->si_type = PERLSI_MAIN; 858 PL_curstackinfo->si_type = PERLSI_MAIN;
569 PL_curstack = PL_curstackinfo->si_stack; 859 PL_curstack = PL_curstackinfo->si_stack;
570 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 860 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
571 861
572 PL_stack_base = AvARRAY(PL_curstack); 862 PL_stack_base = AvARRAY(PL_curstack);
… …
592 882
593 New(54,PL_savestack,24,ANY); 883 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 884 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 885 PL_savestack_max = 24;
596 886
597#if !PERL_VERSION_ATLEAST (5,9,0) 887#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 888 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 889 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 890 PL_retstack_max = 4;
601#endif 891#endif
602} 892}
… …
604 894
605/* 895/*
606 * destroy the stacks, the callchain etc... 896 * destroy the stacks, the callchain etc...
607 */ 897 */
608static void 898static void
609coro_destroy_stacks (pTHX) 899coro_destruct_stacks (pTHX)
610{ 900{
611 while (PL_curstackinfo->si_next) 901 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 902 PL_curstackinfo = PL_curstackinfo->si_next;
613 903
614 while (PL_curstackinfo) 904 while (PL_curstackinfo)
… …
625 915
626 Safefree (PL_tmps_stack); 916 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 917 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 918 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 919 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 920#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 921 Safefree (PL_retstack);
632#endif 922#endif
633} 923}
634 924
925#define CORO_RSS \
926 rss += sizeof (SYM (curstackinfo)); \
927 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
928 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
929 rss += SYM (tmps_max) * sizeof (SV *); \
930 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
931 rss += SYM (scopestack_max) * sizeof (I32); \
932 rss += SYM (savestack_max) * sizeof (ANY);
933
635static size_t 934static size_t
636coro_rss (pTHX_ struct coro *coro) 935coro_rss (pTHX_ struct coro *coro)
637{ 936{
638 size_t rss = sizeof (*coro); 937 size_t rss = sizeof (*coro);
639 938
640 if (coro->mainstack) 939 if (coro->mainstack)
641 { 940 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING) 941 if (coro->flags & CF_RUNNING)
646 { 942 {
647 slot = &tmp_slot; 943 #define SYM(sym) PL_ ## sym
648 944 CORO_RSS;
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR 945 #undef SYM
652 } 946 }
653 else 947 else
654 slot = coro->slot; 948 {
949 #define SYM(sym) coro->slot->sym
950 CORO_RSS;
951 #undef SYM
952 }
953 }
655 954
656 rss += sizeof (slot->curstackinfo); 955 return rss;
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 956}
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659 rss += slot->tmps_max * sizeof (SV *);
660 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661 rss += slot->scopestack_max * sizeof (I32);
662 rss += slot->savestack_max * sizeof (ANY);
663 957
664#if !PERL_VERSION_ATLEAST (5,9,0) 958/** coroutine stack handling ************************************************/
665 rss += slot->retstack_max * sizeof (OP *); 959
960static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
961static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
962static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
963
964/* apparently < 5.8.8 */
965#ifndef MgPV_nolen_const
966#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
967 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
968 (const char*)(mg)->mg_ptr)
666#endif 969#endif
970
971/*
972 * This overrides the default magic get method of %SIG elements.
973 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
974 * and instead of trying to save and restore the hash elements (extremely slow),
975 * we just provide our own readback here.
976 */
977static int ecb_cold
978coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
979{
980 const char *s = MgPV_nolen_const (mg);
981
982 if (*s == '_')
667 } 983 {
984 SV **svp = 0;
668 985
986 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
987 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
988
989 if (svp)
990 {
991 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
992 return 0;
993 }
994 }
995
996 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
997}
998
999static int ecb_cold
1000coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
1001{
1002 const char *s = MgPV_nolen_const (mg);
1003
1004 if (*s == '_')
1005 {
1006 SV **svp = 0;
1007
1008 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1009 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1010
1011 if (svp)
1012 {
1013 SV *old = *svp;
1014 *svp = 0;
1015 SvREFCNT_dec (old);
1016 return 0;
1017 }
1018 }
1019
1020 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1021}
1022
1023static int ecb_cold
1024coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1025{
1026 const char *s = MgPV_nolen_const (mg);
1027
1028 if (*s == '_')
1029 {
1030 SV **svp = 0;
1031
1032 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1033 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1034
1035 if (svp)
1036 {
1037 SV *old = *svp;
1038 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1039 SvREFCNT_dec (old);
1040 return 0;
1041 }
1042 }
1043
1044 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1045}
1046
1047static void
1048prepare_nop (pTHX_ struct coro_transfer_args *ta)
1049{
1050 /* kind of mega-hacky, but works */
1051 ta->next = ta->prev = (struct coro *)ta;
1052}
1053
1054static int
1055slf_check_nop (pTHX_ struct CoroSLF *frame)
1056{
669 return rss; 1057 return 0;
670} 1058}
671 1059
672/** coroutine stack handling ************************************************/
673
674static void 1060static int
1061slf_check_repeat (pTHX_ struct CoroSLF *frame)
1062{
1063 return 1;
1064}
1065
1066static UNOP init_perl_op;
1067
1068ecb_noinline static void /* noinline to keep it out of the transfer fast path */
675coro_setup (pTHX_ struct coro *coro) 1069init_perl (pTHX_ struct coro *coro)
676{ 1070{
677 /* 1071 /*
678 * emulate part of the perl startup here. 1072 * emulate part of the perl startup here.
679 */ 1073 */
680 coro_init_stacks (aTHX); 1074 coro_init_stacks (aTHX);
681 1075
682 PL_runops = RUNOPS_DEFAULT; 1076 PL_runops = RUNOPS_DEFAULT;
683 PL_curcop = &PL_compiling; 1077 PL_curcop = &PL_compiling;
684 PL_in_eval = EVAL_NULL; 1078 PL_in_eval = EVAL_NULL;
685 PL_comppad = 0; 1079 PL_comppad = 0;
1080 PL_comppad_name = 0;
1081 PL_comppad_name_fill = 0;
1082 PL_comppad_name_floor = 0;
686 PL_curpm = 0; 1083 PL_curpm = 0;
687 PL_curpad = 0; 1084 PL_curpad = 0;
688 PL_localizing = 0; 1085 PL_localizing = 0;
689 PL_dirty = 0;
690 PL_restartop = 0; 1086 PL_restartop = 0;
691 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 1087#if PERL_VERSION_ATLEAST (5,10,0)
692 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 1088 PL_parser = 0;
1089#endif
1090 PL_hints = 0;
1091
1092 /* recreate the die/warn hooks */
1093 PL_diehook = SvREFCNT_inc (rv_diehook);
1094 PL_warnhook = SvREFCNT_inc (rv_warnhook);
693 1095
694 GvSV (PL_defgv) = newSV (0); 1096 GvSV (PL_defgv) = newSV (0);
695 GvAV (PL_defgv) = coro->args; coro->args = 0; 1097 GvAV (PL_defgv) = coro->args; coro->args = 0;
696 GvSV (PL_errgv) = newSV (0); 1098 GvSV (PL_errgv) = newSV (0);
697 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1099 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1100 GvHV (PL_hintgv) = 0;
698 PL_rs = newSVsv (GvSV (irsgv)); 1101 PL_rs = newSVsv (GvSV (irsgv));
699 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 1102 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700 1103
701 { 1104 {
702 dSP; 1105 dSP;
703 LOGOP myop; 1106 UNOP myop;
704 1107
705 Zero (&myop, 1, LOGOP); 1108 Zero (&myop, 1, UNOP);
706 myop.op_next = Nullop; 1109 myop.op_next = Nullop;
1110 myop.op_type = OP_ENTERSUB;
707 myop.op_flags = OPf_WANT_VOID; 1111 myop.op_flags = OPf_WANT_VOID;
708 1112
709 PUSHMARK (SP); 1113 PUSHMARK (SP);
710 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1114 PUSHs ((SV *)coro->startcv);
711 PUTBACK; 1115 PUTBACK;
712 PL_op = (OP *)&myop; 1116 PL_op = (OP *)&myop;
713 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714 SPAGAIN;
715 } 1118 }
716 1119
717 ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ 1120 /* this newly created coroutine might be run on an existing cctx which most
718} 1121 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1122 */
1123 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1124 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1125 slf_frame.destroy = 0;
719 1126
1127 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1128 init_perl_op.op_next = PL_op;
1129 init_perl_op.op_type = OP_ENTERSUB;
1130 init_perl_op.op_ppaddr = pp_slf;
1131 /* no flags etc. required, as an init function won't be called */
1132
1133 PL_op = (OP *)&init_perl_op;
1134
1135 /* copy throw, in case it was set before init_perl */
1136 CORO_THROW = coro->except;
1137
1138 SWAP_SVS (coro);
1139
1140 if (ecb_expect_false (enable_times))
1141 {
1142 coro_times_update ();
1143 coro_times_sub (coro);
1144 }
1145}
1146
720static void 1147static void
721coro_destroy (pTHX_ struct coro *coro) 1148coro_unwind_stacks (pTHX)
722{ 1149{
723 if (!IN_DESTRUCT) 1150 if (!IN_DESTRUCT)
724 { 1151 {
725 /* restore all saved variables and stuff */ 1152 /* restore all saved variables and stuff */
726 LEAVE_SCOPE (0); 1153 LEAVE_SCOPE (0);
… …
734 POPSTACK_TO (PL_mainstack); 1161 POPSTACK_TO (PL_mainstack);
735 1162
736 /* unwind main stack */ 1163 /* unwind main stack */
737 dounwind (-1); 1164 dounwind (-1);
738 } 1165 }
1166}
739 1167
740 SvREFCNT_dec (GvSV (PL_defgv)); 1168static void
741 SvREFCNT_dec (GvAV (PL_defgv)); 1169destroy_perl (pTHX_ struct coro *coro)
742 SvREFCNT_dec (GvSV (PL_errgv)); 1170{
743 SvREFCNT_dec (PL_defoutgv); 1171 SV *svf [9];
744 SvREFCNT_dec (PL_rs);
745 SvREFCNT_dec (GvSV (irsgv));
746 1172
747 SvREFCNT_dec (PL_diehook);
748 SvREFCNT_dec (PL_warnhook);
749 1173 {
1174 SV *old_current = SvRV (coro_current);
1175 struct coro *current = SvSTATE (old_current);
1176
1177 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1178
1179 save_perl (aTHX_ current);
1180
1181 /* this will cause transfer_check to croak on block*/
1182 SvRV_set (coro_current, (SV *)coro->hv);
1183
1184 load_perl (aTHX_ coro);
1185
1186 coro_unwind_stacks (aTHX);
1187
1188 /* restore swapped sv's */
1189 SWAP_SVS (coro);
1190
1191 coro_destruct_stacks (aTHX);
1192
1193 // now save some sv's to be free'd later
1194 svf [0] = GvSV (PL_defgv);
1195 svf [1] = (SV *)GvAV (PL_defgv);
1196 svf [2] = GvSV (PL_errgv);
1197 svf [3] = (SV *)PL_defoutgv;
1198 svf [4] = PL_rs;
1199 svf [5] = GvSV (irsgv);
1200 svf [6] = (SV *)GvHV (PL_hintgv);
1201 svf [7] = PL_diehook;
1202 svf [8] = PL_warnhook;
1203 assert (9 == sizeof (svf) / sizeof (*svf));
1204
1205 SvRV_set (coro_current, old_current);
1206
1207 load_perl (aTHX_ current);
1208 }
1209
1210 {
1211 unsigned int i;
1212
1213 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1214 SvREFCNT_dec (svf [i]);
1215
750 SvREFCNT_dec (coro->saved_deffh); 1216 SvREFCNT_dec (coro->saved_deffh);
751 SvREFCNT_dec (coro->throw); 1217 SvREFCNT_dec (coro->rouse_cb);
752 1218 SvREFCNT_dec (coro->invoke_cb);
753 coro_destroy_stacks (aTHX); 1219 SvREFCNT_dec (coro->invoke_av);
1220 }
754} 1221}
755 1222
756static void 1223ECB_INLINE void
757free_coro_mortal (pTHX) 1224free_coro_mortal (pTHX)
758{ 1225{
759 if (expect_true (coro_mortal)) 1226 if (ecb_expect_true (coro_mortal))
760 { 1227 {
761 SvREFCNT_dec (coro_mortal); 1228 SvREFCNT_dec ((SV *)coro_mortal);
762 coro_mortal = 0; 1229 coro_mortal = 0;
763 } 1230 }
764} 1231}
765 1232
766static int 1233static int
767runops_trace (pTHX) 1234runops_trace (pTHX)
768{ 1235{
769 COP *oldcop = 0; 1236 COP *oldcop = 0;
770 int oldcxix = -2; 1237 int oldcxix = -2;
771 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
772 coro_cctx *cctx = coro->cctx;
773 1238
774 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1239 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
775 { 1240 {
776 PERL_ASYNC_CHECK (); 1241 PERL_ASYNC_CHECK ();
777 1242
778 if (cctx->flags & CC_TRACE_ALL) 1243 if (cctx_current->flags & CC_TRACE_ALL)
779 { 1244 {
780 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1245 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
781 { 1246 {
782 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1247 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
783 SV **bot, **top; 1248 SV **bot, **top;
784 AV *av = newAV (); /* return values */ 1249 AV *av = newAV (); /* return values */
785 SV **cb; 1250 SV **cb;
… …
795 : cx->blk_gimme == G_SCALAR ? bot + 1 1260 : cx->blk_gimme == G_SCALAR ? bot + 1
796 : bot; 1261 : bot;
797 1262
798 av_extend (av, top - bot); 1263 av_extend (av, top - bot);
799 while (bot < top) 1264 while (bot < top)
800 av_push (av, SvREFCNT_inc (*bot++)); 1265 av_push (av, SvREFCNT_inc_NN (*bot++));
801 1266
802 PL_runops = RUNOPS_DEFAULT; 1267 PL_runops = RUNOPS_DEFAULT;
803 ENTER; 1268 ENTER;
804 SAVETMPS; 1269 SAVETMPS;
805 EXTEND (SP, 3); 1270 EXTEND (SP, 3);
806 PUSHMARK (SP); 1271 PUSHMARK (SP);
807 PUSHs (&PL_sv_no); 1272 PUSHs (&PL_sv_no);
808 PUSHs (fullname); 1273 PUSHs (fullname);
809 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1274 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810 PUTBACK; 1275 PUTBACK;
811 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1276 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1277 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813 SPAGAIN; 1278 SPAGAIN;
814 FREETMPS; 1279 FREETMPS;
815 LEAVE; 1280 LEAVE;
816 PL_runops = runops_trace; 1281 PL_runops = runops_trace;
… …
822 1287
823 if (PL_curcop != &PL_compiling) 1288 if (PL_curcop != &PL_compiling)
824 { 1289 {
825 SV **cb; 1290 SV **cb;
826 1291
827 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1292 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
828 { 1293 {
829 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1294 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
830 1295
831 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1296 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
832 { 1297 {
833 runops_proc_t old_runops = PL_runops;
834 dSP; 1298 dSP;
835 GV *gv = CvGV (cx->blk_sub.cv); 1299 GV *gv = CvGV (cx->blk_sub.cv);
836 SV *fullname = sv_2mortal (newSV (0)); 1300 SV *fullname = sv_2mortal (newSV (0));
837 1301
838 if (isGV (gv)) 1302 if (isGV (gv))
… …
843 SAVETMPS; 1307 SAVETMPS;
844 EXTEND (SP, 3); 1308 EXTEND (SP, 3);
845 PUSHMARK (SP); 1309 PUSHMARK (SP);
846 PUSHs (&PL_sv_yes); 1310 PUSHs (&PL_sv_yes);
847 PUSHs (fullname); 1311 PUSHs (fullname);
848 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1312 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849 PUTBACK; 1313 PUTBACK;
850 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1314 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1315 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852 SPAGAIN; 1316 SPAGAIN;
853 FREETMPS; 1317 FREETMPS;
854 LEAVE; 1318 LEAVE;
855 PL_runops = runops_trace; 1319 PL_runops = runops_trace;
856 } 1320 }
857 1321
858 oldcxix = cxstack_ix; 1322 oldcxix = cxstack_ix;
859 } 1323 }
860 1324
861 if (cctx->flags & CC_TRACE_LINE) 1325 if (cctx_current->flags & CC_TRACE_LINE)
862 { 1326 {
863 dSP; 1327 dSP;
864 1328
865 PL_runops = RUNOPS_DEFAULT; 1329 PL_runops = RUNOPS_DEFAULT;
866 ENTER; 1330 ENTER;
… …
869 PL_runops = RUNOPS_DEFAULT; 1333 PL_runops = RUNOPS_DEFAULT;
870 PUSHMARK (SP); 1334 PUSHMARK (SP);
871 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1335 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1336 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873 PUTBACK; 1337 PUTBACK;
874 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1338 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1339 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876 SPAGAIN; 1340 SPAGAIN;
877 FREETMPS; 1341 FREETMPS;
878 LEAVE; 1342 LEAVE;
879 PL_runops = runops_trace; 1343 PL_runops = runops_trace;
… …
885 1349
886 TAINT_NOT; 1350 TAINT_NOT;
887 return 0; 1351 return 0;
888} 1352}
889 1353
890/* inject a fake call to Coro::State::_cctx_init into the execution */ 1354static struct CoroSLF cctx_ssl_frame;
891/* _cctx_init should be careful, as it could be called at almost any time */
892/* during execution of a perl program */
893static void NOINLINE
894cctx_prepare (pTHX_ coro_cctx *cctx)
895{
896 dSP;
897 LOGOP myop;
898 1355
1356static void
1357slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1358{
1359 ta->prev = 0;
1360}
1361
1362static int
1363slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1364{
1365 *frame = cctx_ssl_frame;
1366
1367 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1368}
1369
1370/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1371static void ecb_noinline
1372cctx_prepare (pTHX)
1373{
899 PL_top_env = &PL_start_env; 1374 PL_top_env = &PL_start_env;
900 1375
901 if (cctx->flags & CC_TRACE) 1376 if (cctx_current->flags & CC_TRACE)
902 PL_runops = runops_trace; 1377 PL_runops = runops_trace;
903 1378
904 Zero (&myop, 1, LOGOP); 1379 /* we already must be executing an SLF op, there is no other valid way
905 myop.op_next = PL_op; 1380 * that can lead to creation of a new cctx */
906 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1381 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1382 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
907 1383
908 PUSHMARK (SP); 1384 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
909 EXTEND (SP, 2); 1385 cctx_ssl_frame = slf_frame;
910 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1386
911 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1387 slf_frame.prepare = slf_prepare_set_stacklevel;
912 PUTBACK; 1388 slf_frame.check = slf_check_set_stacklevel;
913 PL_op = (OP *)&myop; 1389}
914 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1390
915 SPAGAIN; 1391/* the tail of transfer: execute stuff we can only do after a transfer */
1392ECB_INLINE void
1393transfer_tail (pTHX)
1394{
1395 free_coro_mortal (aTHX);
916} 1396}
917 1397
918/* 1398/*
919 * this is a _very_ stripped down perl interpreter ;) 1399 * this is a _very_ stripped down perl interpreter ;)
920 */ 1400 */
921static void 1401static void
922cctx_run (void *arg) 1402cctx_run (void *arg)
923{ 1403{
1404#ifdef USE_ITHREADS
1405# if CORO_PTHREAD
1406 PERL_SET_CONTEXT (coro_thx);
1407# endif
1408#endif
1409 {
924 dTHX; 1410 dTHX;
925 1411
926 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1412 /* normally we would need to skip the entersub here */
927 UNLOCK; 1413 /* not doing so will re-execute it, which is exactly what we want */
928
929 /* we now skip the entersub that lead to transfer() */
930 PL_op = PL_op->op_next; 1414 /* PL_nop = PL_nop->op_next */
931 1415
932 /* inject a fake subroutine call to cctx_init */ 1416 /* inject a fake subroutine call to cctx_init */
933 cctx_prepare (aTHX_ (coro_cctx *)arg); 1417 cctx_prepare (aTHX);
934 1418
1419 /* cctx_run is the alternative tail of transfer() */
1420 transfer_tail (aTHX);
1421
935 /* somebody or something will hit me for both perl_run and PL_restartop */ 1422 /* somebody or something will hit me for both perl_run and PL_restartop */
936 PL_restartop = PL_op; 1423 PL_restartop = PL_op;
937 perl_run (PL_curinterp); 1424 perl_run (PL_curinterp);
938
939 /* 1425 /*
1426 * Unfortunately, there is no way to get at the return values of the
1427 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1428 * runtime errors here, as this is just a random interpreter, not a thread.
1429 */
1430
1431 /*
940 * If perl-run returns we assume exit() was being called or the coro 1432 * If perl-run returns we assume exit() was being called or the coro
941 * fell off the end, which seems to be the only valid (non-bug) 1433 * fell off the end, which seems to be the only valid (non-bug)
942 * reason for perl_run to return. We try to exit by jumping to the 1434 * reason for perl_run to return. We try to exit by jumping to the
943 * bootstrap-time "top" top_env, as we cannot restore the "main" 1435 * bootstrap-time "top" top_env, as we cannot restore the "main"
944 * coroutine as Coro has no such concept 1436 * coroutine as Coro has no such concept.
1437 * This actually isn't valid with the pthread backend, but OSes requiring
1438 * that backend are too broken to do it in a standards-compliant way.
945 */ 1439 */
946 PL_top_env = main_top_env; 1440 PL_top_env = main_top_env;
947 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1441 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1442 }
948} 1443}
949 1444
950static coro_cctx * 1445static coro_cctx *
951cctx_new () 1446cctx_new ()
952{ 1447{
953 coro_cctx *cctx; 1448 coro_cctx *cctx;
1449
1450 ++cctx_count;
1451 New (0, cctx, 1, coro_cctx);
1452
1453 cctx->gen = cctx_gen;
1454 cctx->flags = 0;
1455 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1456
1457 return cctx;
1458}
1459
1460/* create a new cctx only suitable as source */
1461static coro_cctx *
1462cctx_new_empty ()
1463{
1464 coro_cctx *cctx = cctx_new ();
1465
1466 cctx->sptr = 0;
1467 coro_create (&cctx->cctx, 0, 0, 0, 0);
1468
1469 return cctx;
1470}
1471
1472/* create a new cctx suitable as destination/running a perl interpreter */
1473static coro_cctx *
1474cctx_new_run ()
1475{
1476 coro_cctx *cctx = cctx_new ();
954 void *stack_start; 1477 void *stack_start;
955 size_t stack_size; 1478 size_t stack_size;
956 1479
957 ++cctx_count;
958
959 Newz (0, cctx, 1, coro_cctx);
960
961#if HAVE_MMAP 1480#if HAVE_MMAP
962 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1481 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963 /* mmap supposedly does allocate-on-write for us */ 1482 /* 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); 1483 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965 1484
966 if (cctx->sptr != (void *)-1) 1485 if (cctx->sptr != (void *)-1)
967 { 1486 {
968# if CORO_STACKGUARD 1487 #if CORO_STACKGUARD
969 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1488 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
970# endif 1489 #endif
971 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1490 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
972 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1491 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
973 cctx->flags |= CC_MAPPED; 1492 cctx->flags |= CC_MAPPED;
974 } 1493 }
975 else 1494 else
976#endif 1495#endif
977 { 1496 {
978 cctx->ssize = coro_stacksize * (long)sizeof (long); 1497 cctx->ssize = cctx_stacksize * (long)sizeof (long);
979 New (0, cctx->sptr, coro_stacksize, long); 1498 New (0, cctx->sptr, cctx_stacksize, long);
980 1499
981 if (!cctx->sptr) 1500 if (!cctx->sptr)
982 { 1501 {
983 perror ("FATAL: unable to allocate stack for coroutine"); 1502 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
984 _exit (EXIT_FAILURE); 1503 _exit (EXIT_FAILURE);
985 } 1504 }
986 1505
987 stack_start = cctx->sptr; 1506 stack_start = cctx->sptr;
988 stack_size = cctx->ssize; 1507 stack_size = cctx->ssize;
989 } 1508 }
990 1509
991 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1510 #if CORO_USE_VALGRIND
1511 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1512 #endif
1513
992 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1514 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993 1515
994 return cctx; 1516 return cctx;
995} 1517}
996 1518
… …
998cctx_destroy (coro_cctx *cctx) 1520cctx_destroy (coro_cctx *cctx)
999{ 1521{
1000 if (!cctx) 1522 if (!cctx)
1001 return; 1523 return;
1002 1524
1525 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1526
1003 --cctx_count; 1527 --cctx_count;
1528 coro_destroy (&cctx->cctx);
1004 1529
1530 /* coro_transfer creates new, empty cctx's */
1531 if (cctx->sptr)
1532 {
1005#if CORO_USE_VALGRIND 1533 #if CORO_USE_VALGRIND
1006 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1534 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1535 #endif
1536
1537#if HAVE_MMAP
1538 if (cctx->flags & CC_MAPPED)
1539 munmap (cctx->sptr, cctx->ssize);
1540 else
1007#endif 1541#endif
1008
1009#if HAVE_MMAP
1010 if (cctx->flags & CC_MAPPED)
1011 munmap (cctx->sptr, cctx->ssize);
1012 else
1013#endif
1014 Safefree (cctx->sptr); 1542 Safefree (cctx->sptr);
1543 }
1015 1544
1016 Safefree (cctx); 1545 Safefree (cctx);
1017} 1546}
1018 1547
1019/* wether this cctx should be destructed */ 1548/* wether this cctx should be destructed */
1020#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1549#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021 1550
1022static coro_cctx * 1551static coro_cctx *
1023cctx_get (pTHX) 1552cctx_get (pTHX)
1024{ 1553{
1025 while (expect_true (cctx_first)) 1554 while (ecb_expect_true (cctx_first))
1026 { 1555 {
1027 coro_cctx *cctx = cctx_first; 1556 coro_cctx *cctx = cctx_first;
1028 cctx_first = cctx->next; 1557 cctx_first = cctx->next;
1029 --cctx_idle; 1558 --cctx_idle;
1030 1559
1031 if (expect_true (!CCTX_EXPIRED (cctx))) 1560 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1032 return cctx; 1561 return cctx;
1033 1562
1034 cctx_destroy (cctx); 1563 cctx_destroy (cctx);
1035 } 1564 }
1036 1565
1037 return cctx_new (); 1566 return cctx_new_run ();
1038} 1567}
1039 1568
1040static void 1569static void
1041cctx_put (coro_cctx *cctx) 1570cctx_put (coro_cctx *cctx)
1042{ 1571{
1572 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1573
1043 /* free another cctx if overlimit */ 1574 /* free another cctx if overlimit */
1044 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1575 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1045 { 1576 {
1046 coro_cctx *first = cctx_first; 1577 coro_cctx *first = cctx_first;
1047 cctx_first = first->next; 1578 cctx_first = first->next;
1048 --cctx_idle; 1579 --cctx_idle;
1049 1580
… …
1058/** coroutine switching *****************************************************/ 1589/** coroutine switching *****************************************************/
1059 1590
1060static void 1591static void
1061transfer_check (pTHX_ struct coro *prev, struct coro *next) 1592transfer_check (pTHX_ struct coro *prev, struct coro *next)
1062{ 1593{
1594 /* TODO: throwing up here is considered harmful */
1595
1063 if (expect_true (prev != next)) 1596 if (ecb_expect_true (prev != next))
1064 { 1597 {
1065 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1598 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"); 1599 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1067 1600
1068 if (expect_false (next->flags & CF_RUNNING)) 1601 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"); 1602 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1073 1603
1074 if (
1075#if PERL_VERSION_ATLEAST (5,9,0) 1604#if !PERL_VERSION_ATLEAST (5,10,0)
1076 expect_false (PL_parser)
1077#else
1078 expect_false (PL_lex_state != LEX_NOTPARSING) 1605 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1606 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1079#endif 1607#endif
1080 )
1081 croak ("Coro::State::transfer called while parsing, but this is not supported");
1082 } 1608 }
1083} 1609}
1084 1610
1085/* always use the TRANSFER macro */ 1611/* always use the TRANSFER macro */
1086static void NOINLINE 1612static void ecb_noinline /* noinline so we have a fixed stackframe */
1087transfer (pTHX_ struct coro *prev, struct coro *next) 1613transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088{ 1614{
1089 dSTACKLEVEL; 1615 dSTACKLEVEL;
1090 1616
1091 /* sometimes transfer is only called to set idle_sp */ 1617 /* sometimes transfer is only called to set idle_sp */
1092 if (expect_false (!next)) 1618 if (ecb_expect_false (!prev))
1093 { 1619 {
1094 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1620 cctx_current->idle_sp = STACKLEVEL;
1095 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1621 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096 } 1622 }
1097 else if (expect_true (prev != next)) 1623 else if (ecb_expect_true (prev != next))
1098 { 1624 {
1099 coro_cctx *prev__cctx; 1625 coro_cctx *cctx_prev;
1100 1626
1101 if (expect_false (prev->flags & CF_NEW)) 1627 if (ecb_expect_false (prev->flags & CF_NEW))
1102 { 1628 {
1103 /* create a new empty context */ 1629 /* create a new empty/source context */
1104 Newz (0, prev->cctx, 1, coro_cctx);
1105 prev->flags &= ~CF_NEW; 1630 prev->flags &= ~CF_NEW;
1106 prev->flags |= CF_RUNNING; 1631 prev->flags |= CF_RUNNING;
1107 } 1632 }
1108 1633
1109 prev->flags &= ~CF_RUNNING; 1634 prev->flags &= ~CF_RUNNING;
1110 next->flags |= CF_RUNNING; 1635 next->flags |= CF_RUNNING;
1111 1636
1112 LOCK; 1637 /* first get rid of the old state */
1638 save_perl (aTHX_ prev);
1113 1639
1114 if (expect_false (next->flags & CF_NEW)) 1640 if (ecb_expect_false (next->flags & CF_NEW))
1115 { 1641 {
1116 /* need to start coroutine */ 1642 /* need to start coroutine */
1117 next->flags &= ~CF_NEW; 1643 next->flags &= ~CF_NEW;
1118 /* first get rid of the old state */
1119 save_perl (aTHX_ prev);
1120 /* setup coroutine call */ 1644 /* setup coroutine call */
1121 coro_setup (aTHX_ next); 1645 init_perl (aTHX_ next);
1122 } 1646 }
1123 else 1647 else
1648 load_perl (aTHX_ next);
1649
1650 /* possibly untie and reuse the cctx */
1651 if (ecb_expect_true (
1652 cctx_current->idle_sp == STACKLEVEL
1653 && !(cctx_current->flags & CC_TRACE)
1654 && !force_cctx
1655 ))
1124 { 1656 {
1125 /* coroutine already started */ 1657 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1126 save_perl (aTHX_ prev); 1658 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); 1659
1660 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1661 /* without this the next cctx_get might destroy the running cctx while still in use */
1662 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1663 if (ecb_expect_true (!next->cctx))
1664 next->cctx = cctx_get (aTHX);
1665
1666 cctx_put (cctx_current);
1128 } 1667 }
1668 else
1669 prev->cctx = cctx_current;
1129 1670
1130 prev__cctx = prev->cctx; 1671 ++next->usecount;
1131 1672
1132 /* possibly "free" the cctx */ 1673 cctx_prev = cctx_current;
1133 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1674 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1675
1676 next->cctx = 0;
1677
1678 if (ecb_expect_false (cctx_prev != cctx_current))
1134 { 1679 {
1135 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1680 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)); 1681 PL_top_env = cctx_current->top_env;
1137 1682 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 if (!next->cctx)
1144 next->cctx = cctx_get (aTHX);
1145
1146 cctx_put (prev__cctx);
1147 } 1683 }
1148 1684
1149 ++next->usecount; 1685 transfer_tail (aTHX);
1150
1151 if (expect_true (!next->cctx))
1152 next->cctx = cctx_get (aTHX);
1153
1154 if (expect_false (prev__cctx != next->cctx))
1155 {
1156 prev__cctx->top_env = PL_top_env;
1157 PL_top_env = next->cctx->top_env;
1158 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159 }
1160
1161 free_coro_mortal (aTHX);
1162 UNLOCK;
1163
1164 if (expect_false (prev->throw || next->throw))
1165 {
1166 struct coro *coro = SvSTATE (coro_current);
1167
1168 if (coro->throw)
1169 {
1170 SV *exception = coro->throw;
1171 coro->throw = 0;
1172 sv_setsv (ERRSV, exception);
1173 croak (0);
1174 }
1175 }
1176 } 1686 }
1177} 1687}
1178 1688
1179struct transfer_args
1180{
1181 struct coro *prev, *next;
1182};
1183
1184#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1689#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1690#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186 1691
1187/** high level stuff ********************************************************/ 1692/** high level stuff ********************************************************/
1188 1693
1694/* this function is actually Coro, not Coro::State, but we call it from here */
1695/* because it is convenient - but it hasn't been declared yet for that reason */
1189static int 1696static void
1697coro_call_on_destroy (pTHX_ struct coro *coro);
1698
1699static void
1190coro_state_destroy (pTHX_ struct coro *coro) 1700coro_state_destroy (pTHX_ struct coro *coro)
1191{ 1701{
1192 if (coro->flags & CF_DESTROYED) 1702 if (coro->flags & CF_ZOMBIE)
1193 return 0; 1703 return;
1194 1704
1705 slf_destroy (aTHX_ coro);
1706
1195 coro->flags |= CF_DESTROYED; 1707 coro->flags |= CF_ZOMBIE;
1196 1708
1197 if (coro->flags & CF_READY) 1709 if (coro->flags & CF_READY)
1198 { 1710 {
1199 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1711 /* reduce nready, as destroying a ready coro effectively unreadies it */
1200 /* alternative: look through all ready queues and remove the coro */ 1712 /* alternative: look through all ready queues and remove the coro */
1201 LOCK;
1202 --coro_nready; 1713 --coro_nready;
1203 UNLOCK;
1204 } 1714 }
1205 else 1715 else
1206 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1716 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1207
1208 if (coro->mainstack && coro->mainstack != main_mainstack)
1209 {
1210 struct coro temp;
1211
1212 if (coro->flags & CF_RUNNING)
1213 croak ("FATAL: tried to destroy currently running coroutine");
1214
1215 save_perl (aTHX_ &temp);
1216 load_perl (aTHX_ coro);
1217
1218 coro_destroy (aTHX_ coro);
1219
1220 load_perl (aTHX_ &temp);
1221
1222 coro->slot = 0;
1223 }
1224
1225 cctx_destroy (coro->cctx);
1226 SvREFCNT_dec (coro->args);
1227 1717
1228 if (coro->next) coro->next->prev = coro->prev; 1718 if (coro->next) coro->next->prev = coro->prev;
1229 if (coro->prev) coro->prev->next = coro->next; 1719 if (coro->prev) coro->prev->next = coro->next;
1230 if (coro == coro_first) coro_first = coro->next; 1720 if (coro == coro_first) coro_first = coro->next;
1231 1721
1232 return 1; 1722 if (coro->mainstack
1723 && coro->mainstack != main_mainstack
1724 && coro->slot
1725 && !PL_dirty)
1726 destroy_perl (aTHX_ coro);
1727
1728 cctx_destroy (coro->cctx);
1729 SvREFCNT_dec (coro->startcv);
1730 SvREFCNT_dec (coro->args);
1731 SvREFCNT_dec (coro->swap_sv);
1732 SvREFCNT_dec (CORO_THROW);
1733
1734 coro_call_on_destroy (aTHX_ coro);
1735
1736 /* more destruction mayhem in coro_state_free */
1233} 1737}
1234 1738
1235static int 1739static int
1236coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1740coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1237{ 1741{
1238 struct coro *coro = (struct coro *)mg->mg_ptr; 1742 struct coro *coro = (struct coro *)mg->mg_ptr;
1239 mg->mg_ptr = 0; 1743 mg->mg_ptr = 0;
1240 1744
1241 coro->hv = 0;
1242
1243 if (--coro->refcnt < 0)
1244 {
1245 coro_state_destroy (aTHX_ coro); 1745 coro_state_destroy (aTHX_ coro);
1746 SvREFCNT_dec (coro->on_destroy);
1747 SvREFCNT_dec (coro->status);
1748
1246 Safefree (coro); 1749 Safefree (coro);
1247 }
1248 1750
1249 return 0; 1751 return 0;
1250} 1752}
1251 1753
1252static int 1754static int ecb_cold
1253coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1755coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1254{ 1756{
1255 struct coro *coro = (struct coro *)mg->mg_ptr; 1757 /* called when perl clones the current process the slow way (windows process emulation) */
1256 1758 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1257 ++coro->refcnt; 1759 mg->mg_ptr = 0;
1760 mg->mg_virtual = 0;
1258 1761
1259 return 0; 1762 return 0;
1260} 1763}
1261 1764
1262static MGVTBL coro_state_vtbl = { 1765static MGVTBL coro_state_vtbl = {
… …
1269# define MGf_DUP 0 1772# define MGf_DUP 0
1270#endif 1773#endif
1271}; 1774};
1272 1775
1273static void 1776static void
1274prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1777prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1275{ 1778{
1276 ta->prev = SvSTATE (prev_sv); 1779 ta->prev = SvSTATE (prev_sv);
1277 ta->next = SvSTATE (next_sv); 1780 ta->next = SvSTATE (next_sv);
1278 TRANSFER_CHECK (*ta); 1781 TRANSFER_CHECK (*ta);
1279} 1782}
1280 1783
1281static void 1784static void
1282api_transfer (SV *prev_sv, SV *next_sv) 1785api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1786{
1787 struct coro_transfer_args ta;
1788
1789 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1790 TRANSFER (ta, 1);
1791}
1792
1793/** Coro ********************************************************************/
1794
1795ECB_INLINE void
1796coro_enq (pTHX_ struct coro *coro)
1797{
1798 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1799
1800 SvREFCNT_inc_NN (coro->hv);
1801
1802 coro->next_ready = 0;
1803 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1804 ready [1] = coro;
1805}
1806
1807ECB_INLINE struct coro *
1808coro_deq (pTHX)
1809{
1810 int prio;
1811
1812 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1813 {
1814 struct coro **ready = coro_ready [prio];
1815
1816 if (ready [0])
1817 {
1818 struct coro *coro = ready [0];
1819 ready [0] = coro->next_ready;
1820 return coro;
1821 }
1822 }
1823
1824 return 0;
1825}
1826
1827static void
1828invoke_sv_ready_hook_helper (void)
1283{ 1829{
1284 dTHX; 1830 dTHX;
1285 struct transfer_args ta; 1831 dSP;
1286 1832
1287 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1833 ENTER;
1288 TRANSFER (ta); 1834 SAVETMPS;
1289}
1290 1835
1291/** Coro ********************************************************************/ 1836 PUSHMARK (SP);
1837 PUTBACK;
1838 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1292 1839
1293static void 1840 FREETMPS;
1294coro_enq (pTHX_ SV *coro_sv) 1841 LEAVE;
1295{
1296 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1297}
1298
1299static SV *
1300coro_deq (pTHX_ int min_prio)
1301{
1302 int prio = PRIO_MAX - PRIO_MIN;
1303
1304 min_prio -= PRIO_MIN;
1305 if (min_prio < 0)
1306 min_prio = 0;
1307
1308 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
1309 if (AvFILLp (coro_ready [prio]) >= 0)
1310 return av_shift (coro_ready [prio]);
1311
1312 return 0;
1313} 1842}
1314 1843
1315static int 1844static int
1316api_ready (SV *coro_sv) 1845api_ready (pTHX_ SV *coro_sv)
1317{ 1846{
1318 dTHX;
1319 struct coro *coro;
1320
1321 if (SvROK (coro_sv))
1322 coro_sv = SvRV (coro_sv);
1323
1324 coro = SvSTATE (coro_sv); 1847 struct coro *coro = SvSTATE (coro_sv);
1325 1848
1326 if (coro->flags & CF_READY) 1849 if (coro->flags & CF_READY)
1327 return 0; 1850 return 0;
1328 1851
1329 coro->flags |= CF_READY; 1852 coro->flags |= CF_READY;
1330 1853
1331 LOCK; 1854 coro_enq (aTHX_ coro);
1332 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1855
1333 ++coro_nready; 1856 if (!coro_nready++)
1334 UNLOCK; 1857 if (coroapi.readyhook)
1858 coroapi.readyhook ();
1335 1859
1336 return 1; 1860 return 1;
1337} 1861}
1338 1862
1339static int 1863static int
1340api_is_ready (SV *coro_sv) 1864api_is_ready (pTHX_ SV *coro_sv)
1341{ 1865{
1342 dTHX;
1343 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1866 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1344} 1867}
1345 1868
1346static void 1869/* expects to own a reference to next->hv */
1870ECB_INLINE void
1347prepare_schedule (pTHX_ struct transfer_args *ta) 1871prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1348{ 1872{
1349 SV *prev_sv, *next_sv;
1350
1351 for (;;)
1352 {
1353 LOCK;
1354 next_sv = coro_deq (aTHX_ PRIO_MIN);
1355
1356 /* nothing to schedule: call the idle handler */
1357 if (expect_false (!next_sv))
1358 {
1359 dSP;
1360 UNLOCK;
1361
1362 ENTER;
1363 SAVETMPS;
1364
1365 PUSHMARK (SP);
1366 PUTBACK;
1367 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1368
1369 FREETMPS;
1370 LEAVE;
1371 continue;
1372 }
1373
1374 ta->next = SvSTATE (next_sv);
1375
1376 /* cannot transfer to destroyed coros, skip and look for next */
1377 if (expect_false (ta->next->flags & CF_DESTROYED))
1378 {
1379 UNLOCK;
1380 SvREFCNT_dec (next_sv);
1381 /* coro_nready is already taken care of by destroy */
1382 continue;
1383 }
1384
1385 --coro_nready;
1386 UNLOCK;
1387 break;
1388 }
1389
1390 /* free this only after the transfer */
1391 prev_sv = SvRV (coro_current); 1873 SV *prev_sv = SvRV (coro_current);
1874
1392 ta->prev = SvSTATE (prev_sv); 1875 ta->prev = SvSTATE_hv (prev_sv);
1876 ta->next = next;
1877
1393 TRANSFER_CHECK (*ta); 1878 TRANSFER_CHECK (*ta);
1394 assert (ta->next->flags & CF_READY); 1879
1395 ta->next->flags &= ~CF_READY;
1396 SvRV_set (coro_current, next_sv); 1880 SvRV_set (coro_current, (SV *)next->hv);
1397 1881
1398 LOCK;
1399 free_coro_mortal (aTHX); 1882 free_coro_mortal (aTHX);
1400 coro_mortal = prev_sv; 1883 coro_mortal = prev_sv;
1401 UNLOCK;
1402} 1884}
1403 1885
1404static void 1886static void
1887prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1888{
1889 for (;;)
1890 {
1891 struct coro *next = coro_deq (aTHX);
1892
1893 if (ecb_expect_true (next))
1894 {
1895 /* cannot transfer to destroyed coros, skip and look for next */
1896 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1897 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1898 else
1899 {
1900 next->flags &= ~CF_READY;
1901 --coro_nready;
1902
1903 prepare_schedule_to (aTHX_ ta, next);
1904 break;
1905 }
1906 }
1907 else
1908 {
1909 /* nothing to schedule: call the idle handler */
1910 if (SvROK (sv_idle)
1911 && SvOBJECT (SvRV (sv_idle)))
1912 {
1913 if (SvRV (sv_idle) == SvRV (coro_current))
1914 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1915
1916 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1917 api_ready (aTHX_ SvRV (sv_idle));
1918 --coro_nready;
1919 }
1920 else
1921 {
1922 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1923 dSP;
1924
1925 ENTER;
1926 SAVETMPS;
1927
1928 PUSHMARK (SP);
1929 PUTBACK;
1930 call_sv (sv_idle, G_VOID | G_DISCARD);
1931
1932 FREETMPS;
1933 LEAVE;
1934 }
1935 }
1936 }
1937}
1938
1939ECB_INLINE void
1405prepare_cede (pTHX_ struct transfer_args *ta) 1940prepare_cede (pTHX_ struct coro_transfer_args *ta)
1406{ 1941{
1407 api_ready (coro_current); 1942 api_ready (aTHX_ coro_current);
1408 prepare_schedule (aTHX_ ta); 1943 prepare_schedule (aTHX_ ta);
1409} 1944}
1410 1945
1946ECB_INLINE void
1947prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1948{
1949 SV *prev = SvRV (coro_current);
1950
1951 if (coro_nready)
1952 {
1953 prepare_schedule (aTHX_ ta);
1954 api_ready (aTHX_ prev);
1955 }
1956 else
1957 prepare_nop (aTHX_ ta);
1958}
1959
1960static void
1961api_schedule (pTHX)
1962{
1963 struct coro_transfer_args ta;
1964
1965 prepare_schedule (aTHX_ &ta);
1966 TRANSFER (ta, 1);
1967}
1968
1969static void
1970api_schedule_to (pTHX_ SV *coro_sv)
1971{
1972 struct coro_transfer_args ta;
1973 struct coro *next = SvSTATE (coro_sv);
1974
1975 SvREFCNT_inc_NN (coro_sv);
1976 prepare_schedule_to (aTHX_ &ta, next);
1977}
1978
1411static int 1979static int
1412prepare_cede_notself (pTHX_ struct transfer_args *ta) 1980api_cede (pTHX)
1413{ 1981{
1414 if (coro_nready) 1982 struct coro_transfer_args ta;
1415 { 1983
1416 SV *prev = SvRV (coro_current);
1417 prepare_schedule (aTHX_ ta); 1984 prepare_cede (aTHX_ &ta);
1418 api_ready (prev); 1985
1986 if (ecb_expect_true (ta.prev != ta.next))
1987 {
1988 TRANSFER (ta, 1);
1419 return 1; 1989 return 1;
1420 } 1990 }
1421 else 1991 else
1422 return 0; 1992 return 0;
1423} 1993}
1424 1994
1425static void
1426api_schedule (void)
1427{
1428 dTHX;
1429 struct transfer_args ta;
1430
1431 prepare_schedule (aTHX_ &ta);
1432 TRANSFER (ta);
1433}
1434
1435static int 1995static int
1436api_cede (void) 1996api_cede_notself (pTHX)
1437{ 1997{
1438 dTHX; 1998 if (coro_nready)
1999 {
1439 struct transfer_args ta; 2000 struct coro_transfer_args ta;
1440 2001
1441 prepare_cede (aTHX_ &ta); 2002 prepare_cede_notself (aTHX_ &ta);
1442
1443 if (expect_true (ta.prev != ta.next))
1444 {
1445 TRANSFER (ta); 2003 TRANSFER (ta, 1);
1446 return 1; 2004 return 1;
1447 } 2005 }
1448 else 2006 else
1449 return 0; 2007 return 0;
1450} 2008}
1451 2009
1452static int 2010static void
1453api_cede_notself (void)
1454{
1455 dTHX;
1456 struct transfer_args ta;
1457
1458 if (prepare_cede_notself (aTHX_ &ta))
1459 {
1460 TRANSFER (ta);
1461 return 1;
1462 }
1463 else
1464 return 0;
1465}
1466
1467static void
1468api_trace (SV *coro_sv, int flags) 2011api_trace (pTHX_ SV *coro_sv, int flags)
1469{ 2012{
1470 dTHX;
1471 struct coro *coro = SvSTATE (coro_sv); 2013 struct coro *coro = SvSTATE (coro_sv);
1472 2014
2015 if (coro->flags & CF_RUNNING)
2016 croak ("cannot enable tracing on a running coroutine, caught");
2017
1473 if (flags & CC_TRACE) 2018 if (flags & CC_TRACE)
1474 { 2019 {
1475 if (!coro->cctx) 2020 if (!coro->cctx)
1476 coro->cctx = cctx_new (); 2021 coro->cctx = cctx_new_run ();
1477 else if (!(coro->cctx->flags & CC_TRACE)) 2022 else if (!(coro->cctx->flags & CC_TRACE))
1478 croak ("cannot enable tracing on coroutine with custom stack"); 2023 croak ("cannot enable tracing on coroutine with custom stack, caught");
1479 2024
1480 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2025 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481 } 2026 }
1482 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2027 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1483 { 2028 {
… …
1488 else 2033 else
1489 coro->slot->runops = RUNOPS_DEFAULT; 2034 coro->slot->runops = RUNOPS_DEFAULT;
1490 } 2035 }
1491} 2036}
1492 2037
2038static void
2039coro_push_av (pTHX_ AV *av, I32 gimme_v)
2040{
2041 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2042 {
2043 dSP;
2044
2045 if (gimme_v == G_SCALAR)
2046 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2047 else
2048 {
2049 int i;
2050 EXTEND (SP, AvFILLp (av) + 1);
2051
2052 for (i = 0; i <= AvFILLp (av); ++i)
2053 PUSHs (AvARRAY (av)[i]);
2054 }
2055
2056 PUTBACK;
2057 }
2058}
2059
2060static void
2061coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2062{
2063 if (!coro->on_destroy)
2064 coro->on_destroy = newAV ();
2065
2066 av_push (coro->on_destroy, cb);
2067}
2068
2069static void
2070slf_destroy_join (pTHX_ struct CoroSLF *frame)
2071{
2072 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2073}
2074
2075static int
2076slf_check_join (pTHX_ struct CoroSLF *frame)
2077{
2078 struct coro *coro = (struct coro *)frame->data;
2079
2080 if (!coro->status)
2081 return 1;
2082
2083 frame->destroy = 0;
2084
2085 coro_push_av (aTHX_ coro->status, GIMME_V);
2086
2087 SvREFCNT_dec ((SV *)coro->hv);
2088
2089 return 0;
2090}
2091
2092static void
2093slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2096
2097 if (items > 1)
2098 croak ("join called with too many arguments");
2099
2100 if (coro->status)
2101 frame->prepare = prepare_nop;
2102 else
2103 {
2104 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2105 frame->prepare = prepare_schedule;
2106 }
2107
2108 frame->check = slf_check_join;
2109 frame->destroy = slf_destroy_join;
2110 frame->data = (void *)coro;
2111 SvREFCNT_inc (coro->hv);
2112}
2113
2114static void
2115coro_call_on_destroy (pTHX_ struct coro *coro)
2116{
2117 AV *od = coro->on_destroy;
2118
2119 if (!od)
2120 return;
2121
2122 while (AvFILLp (od) >= 0)
2123 {
2124 SV *cb = sv_2mortal (av_pop (od));
2125
2126 /* coro hv's (and only hv's at the moment) are supported as well */
2127 if (SvSTATEhv_p (aTHX_ cb))
2128 api_ready (aTHX_ cb);
2129 else
2130 {
2131 dSP; /* don't disturb outer sp */
2132 PUSHMARK (SP);
2133
2134 if (coro->status)
2135 {
2136 PUTBACK;
2137 coro_push_av (aTHX_ coro->status, G_ARRAY);
2138 SPAGAIN;
2139 }
2140
2141 PUTBACK;
2142 call_sv (cb, G_VOID | G_DISCARD);
2143 }
2144 }
2145}
2146
2147static void
2148coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2149{
2150 AV *av;
2151
2152 if (coro->status)
2153 {
2154 av = coro->status;
2155 av_clear (av);
2156 }
2157 else
2158 av = coro->status = newAV ();
2159
2160 /* items are actually not so common, so optimise for this case */
2161 if (items)
2162 {
2163 int i;
2164
2165 av_extend (av, items - 1);
2166
2167 for (i = 0; i < items; ++i)
2168 av_push (av, SvREFCNT_inc_NN (arg [i]));
2169 }
2170}
2171
2172static void
2173slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2174{
2175 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2176 api_ready (aTHX_ sv_manager);
2177
2178 frame->prepare = prepare_schedule;
2179 frame->check = slf_check_repeat;
2180
2181 /* as a minor optimisation, we could unwind all stacks here */
2182 /* but that puts extra pressure on pp_slf, and is not worth much */
2183 /*coro_unwind_stacks (aTHX);*/
2184}
2185
2186static void
2187slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2188{
2189 HV *coro_hv = (HV *)SvRV (coro_current);
2190
2191 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2192 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2193}
2194
2195static void
2196slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 HV *coro_hv;
2199 struct coro *coro;
2200
2201 if (items <= 0)
2202 croak ("Coro::cancel called without coro object,");
2203
2204 coro = SvSTATE (arg [0]);
2205 coro_hv = coro->hv;
2206
2207 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2208
2209 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2210 {
2211 /* coro currently busy cancelling something, so just notify it */
2212 coro->slf_frame.data = (void *)coro;
2213
2214 frame->prepare = prepare_nop;
2215 frame->check = slf_check_nop;
2216 }
2217 else if (coro_hv == (HV *)SvRV (coro_current))
2218 {
2219 /* cancelling the current coro is allowed, and equals terminate */
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221 }
2222 else
2223 {
2224 struct coro *self = SvSTATE_current;
2225
2226 /* otherwise we cancel directly, purely for speed reasons
2227 * unfortunately, this requires some magic trickery, as
2228 * somebody else could cancel us, so we have to fight the cancellation.
2229 * this is ugly, and hopefully fully worth the extra speed.
2230 * besides, I can't get the slow-but-safe version working...
2231 */
2232 slf_frame.data = 0;
2233 self->flags |= CF_NOCANCEL;
2234 coro_state_destroy (aTHX_ coro);
2235 self->flags &= ~CF_NOCANCEL;
2236
2237 if (slf_frame.data)
2238 {
2239 /* while we were busy we have been cancelled, so terminate */
2240 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2241 }
2242 else
2243 {
2244 frame->prepare = prepare_nop;
2245 frame->check = slf_check_nop;
2246 }
2247 }
2248}
2249
2250static int
2251slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2252{
2253 frame->prepare = 0;
2254 coro_unwind_stacks (aTHX);
2255
2256 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2257
2258 return 1;
2259}
2260
2261static int
2262safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2263{
2264 if (coro->cctx)
2265 croak ("coro inside C callback, unable to cancel at this time, caught");
2266
2267 if (coro->flags & CF_NEW)
2268 {
2269 coro_set_status (aTHX_ coro, arg, items);
2270 coro_state_destroy (aTHX_ coro);
2271 }
2272 else
2273 {
2274 if (!coro->slf_frame.prepare)
2275 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2276
2277 slf_destroy (aTHX_ coro);
2278
2279 coro_set_status (aTHX_ coro, arg, items);
2280 coro->slf_frame.prepare = prepare_nop;
2281 coro->slf_frame.check = slf_check_safe_cancel;
2282
2283 api_ready (aTHX_ (SV *)coro->hv);
2284 }
2285
2286 return 1;
2287}
2288
2289/*****************************************************************************/
2290/* async pool handler */
2291
2292static int
2293slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2294{
2295 HV *hv = (HV *)SvRV (coro_current);
2296 struct coro *coro = (struct coro *)frame->data;
2297
2298 if (!coro->invoke_cb)
2299 return 1; /* loop till we have invoke */
2300 else
2301 {
2302 hv_store (hv, "desc", sizeof ("desc") - 1,
2303 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2304
2305 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2306
2307 {
2308 dSP;
2309 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2310 PUTBACK;
2311 }
2312
2313 SvREFCNT_dec (GvAV (PL_defgv));
2314 GvAV (PL_defgv) = coro->invoke_av;
2315 coro->invoke_av = 0;
2316
2317 return 0;
2318 }
2319}
2320
2321static void
2322slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *hv = (HV *)SvRV (coro_current);
2325 struct coro *coro = SvSTATE_hv ((SV *)hv);
2326
2327 if (ecb_expect_true (coro->saved_deffh))
2328 {
2329 /* subsequent iteration */
2330 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2331 coro->saved_deffh = 0;
2332
2333 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2334 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2335 {
2336 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2337 return;
2338 }
2339 else
2340 {
2341 av_clear (GvAV (PL_defgv));
2342 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2343
2344 coro->prio = 0;
2345
2346 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2347 api_trace (aTHX_ coro_current, 0);
2348
2349 frame->prepare = prepare_schedule;
2350 av_push (av_async_pool, SvREFCNT_inc (hv));
2351 }
2352 }
2353 else
2354 {
2355 /* first iteration, simply fall through */
2356 frame->prepare = prepare_nop;
2357 }
2358
2359 frame->check = slf_check_pool_handler;
2360 frame->data = (void *)coro;
2361}
2362
2363/*****************************************************************************/
2364/* rouse callback */
2365
2366#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2367
2368static void
2369coro_rouse_callback (pTHX_ CV *cv)
2370{
2371 dXSARGS;
2372 SV *data = (SV *)S_GENSUB_ARG;
2373
2374 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2375 {
2376 /* first call, set args */
2377 SV *coro = SvRV (data);
2378 AV *av = newAV ();
2379
2380 SvRV_set (data, (SV *)av);
2381
2382 /* better take a full copy of the arguments */
2383 while (items--)
2384 av_store (av, items, newSVsv (ST (items)));
2385
2386 api_ready (aTHX_ coro);
2387 SvREFCNT_dec (coro);
2388 }
2389
2390 XSRETURN_EMPTY;
2391}
2392
2393static int
2394slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2395{
2396 SV *data = (SV *)frame->data;
2397
2398 if (CORO_THROW)
2399 return 0;
2400
2401 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2402 return 1;
2403
2404 /* now push all results on the stack */
2405 {
2406 dSP;
2407 AV *av = (AV *)SvRV (data);
2408 int i;
2409
2410 EXTEND (SP, AvFILLp (av) + 1);
2411 for (i = 0; i <= AvFILLp (av); ++i)
2412 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2413
2414 /* we have stolen the elements, so set length to zero and free */
2415 AvFILLp (av) = -1;
2416 av_undef (av);
2417
2418 PUTBACK;
2419 }
2420
2421 return 0;
2422}
2423
2424static void
2425slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2426{
2427 SV *cb;
2428
2429 if (items)
2430 cb = arg [0];
2431 else
2432 {
2433 struct coro *coro = SvSTATE_current;
2434
2435 if (!coro->rouse_cb)
2436 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2437
2438 cb = sv_2mortal (coro->rouse_cb);
2439 coro->rouse_cb = 0;
2440 }
2441
2442 if (!SvROK (cb)
2443 || SvTYPE (SvRV (cb)) != SVt_PVCV
2444 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2445 croak ("Coro::rouse_wait called with illegal callback argument,");
2446
2447 {
2448 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2449 SV *data = (SV *)S_GENSUB_ARG;
2450
2451 frame->data = (void *)data;
2452 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2453 frame->check = slf_check_rouse_wait;
2454 }
2455}
2456
2457static SV *
2458coro_new_rouse_cb (pTHX)
2459{
2460 HV *hv = (HV *)SvRV (coro_current);
2461 struct coro *coro = SvSTATE_hv (hv);
2462 SV *data = newRV_inc ((SV *)hv);
2463 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2464
2465 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2466 SvREFCNT_dec (data); /* magicext increases the refcount */
2467
2468 SvREFCNT_dec (coro->rouse_cb);
2469 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2470
2471 return cb;
2472}
2473
2474/*****************************************************************************/
2475/* schedule-like-function opcode (SLF) */
2476
2477static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2478static const CV *slf_cv;
2479static SV **slf_argv;
2480static int slf_argc, slf_arga; /* count, allocated */
2481static I32 slf_ax; /* top of stack, for restore */
2482
2483/* this restores the stack in the case we patched the entersub, to */
2484/* recreate the stack frame as perl will on following calls */
2485/* since entersub cleared the stack */
2486static OP *
2487pp_restore (pTHX)
2488{
2489 int i;
2490 SV **SP = PL_stack_base + slf_ax;
2491
2492 PUSHMARK (SP);
2493
2494 EXTEND (SP, slf_argc + 1);
2495
2496 for (i = 0; i < slf_argc; ++i)
2497 PUSHs (sv_2mortal (slf_argv [i]));
2498
2499 PUSHs ((SV *)CvGV (slf_cv));
2500
2501 RETURNOP (slf_restore.op_first);
2502}
2503
2504static void
2505slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2506{
2507 SV **arg = (SV **)slf_frame.data;
2508
2509 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2510}
2511
2512static void
2513slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2514{
2515 if (items != 2)
2516 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2517
2518 frame->prepare = slf_prepare_transfer;
2519 frame->check = slf_check_nop;
2520 frame->data = (void *)arg; /* let's hope it will stay valid */
2521}
2522
2523static void
2524slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2525{
2526 frame->prepare = prepare_schedule;
2527 frame->check = slf_check_nop;
2528}
2529
2530static void
2531slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2532{
2533 struct coro *next = (struct coro *)slf_frame.data;
2534
2535 SvREFCNT_inc_NN (next->hv);
2536 prepare_schedule_to (aTHX_ ta, next);
2537}
2538
2539static void
2540slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 if (!items)
2543 croak ("Coro::schedule_to expects a coroutine argument, caught");
2544
2545 frame->data = (void *)SvSTATE (arg [0]);
2546 frame->prepare = slf_prepare_schedule_to;
2547 frame->check = slf_check_nop;
2548}
2549
2550static void
2551slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2552{
2553 api_ready (aTHX_ SvRV (coro_current));
2554
2555 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2556}
2557
2558static void
2559slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2560{
2561 frame->prepare = prepare_cede;
2562 frame->check = slf_check_nop;
2563}
2564
2565static void
2566slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2567{
2568 frame->prepare = prepare_cede_notself;
2569 frame->check = slf_check_nop;
2570}
2571
2572/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2573static void
2574slf_destroy (pTHX_ struct coro *coro)
2575{
2576 /* this callback is reserved for slf functions needing to do cleanup */
2577 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2578 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2579
2580 /*
2581 * The on_destroy above most likely is from an SLF call.
2582 * Since by definition the SLF call will not finish when we destroy
2583 * the coro, we will have to force-finish it here, otherwise
2584 * cleanup functions cannot call SLF functions.
2585 */
2586 coro->slf_frame.prepare = 0;
2587}
2588
2589/*
2590 * these not obviously related functions are all rolled into one
2591 * function to increase chances that they all will call transfer with the same
2592 * stack offset
2593 * SLF stands for "schedule-like-function".
2594 */
2595static OP *
2596pp_slf (pTHX)
2597{
2598 I32 checkmark; /* mark SP to see how many elements check has pushed */
2599
2600 /* set up the slf frame, unless it has already been set-up */
2601 /* the latter happens when a new coro has been started */
2602 /* or when a new cctx was attached to an existing coroutine */
2603 if (ecb_expect_true (!slf_frame.prepare))
2604 {
2605 /* first iteration */
2606 dSP;
2607 SV **arg = PL_stack_base + TOPMARK + 1;
2608 int items = SP - arg; /* args without function object */
2609 SV *gv = *sp;
2610
2611 /* do a quick consistency check on the "function" object, and if it isn't */
2612 /* for us, divert to the real entersub */
2613 if (SvTYPE (gv) != SVt_PVGV
2614 || !GvCV (gv)
2615 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2616 return PL_ppaddr[OP_ENTERSUB](aTHX);
2617
2618 if (!(PL_op->op_flags & OPf_STACKED))
2619 {
2620 /* ampersand-form of call, use @_ instead of stack */
2621 AV *av = GvAV (PL_defgv);
2622 arg = AvARRAY (av);
2623 items = AvFILLp (av) + 1;
2624 }
2625
2626 /* now call the init function, which needs to set up slf_frame */
2627 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2628 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2629
2630 /* pop args */
2631 SP = PL_stack_base + POPMARK;
2632
2633 PUTBACK;
2634 }
2635
2636 /* now that we have a slf_frame, interpret it! */
2637 /* we use a callback system not to make the code needlessly */
2638 /* complicated, but so we can run multiple perl coros from one cctx */
2639
2640 do
2641 {
2642 struct coro_transfer_args ta;
2643
2644 slf_frame.prepare (aTHX_ &ta);
2645 TRANSFER (ta, 0);
2646
2647 checkmark = PL_stack_sp - PL_stack_base;
2648 }
2649 while (slf_frame.check (aTHX_ &slf_frame));
2650
2651 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2652
2653 /* exception handling */
2654 if (ecb_expect_false (CORO_THROW))
2655 {
2656 SV *exception = sv_2mortal (CORO_THROW);
2657
2658 CORO_THROW = 0;
2659 sv_setsv (ERRSV, exception);
2660 croak (0);
2661 }
2662
2663 /* return value handling - mostly like entersub */
2664 /* make sure we put something on the stack in scalar context */
2665 if (GIMME_V == G_SCALAR
2666 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2667 {
2668 dSP;
2669 SV **bot = PL_stack_base + checkmark;
2670
2671 if (sp == bot) /* too few, push undef */
2672 bot [1] = &PL_sv_undef;
2673 else /* too many, take last one */
2674 bot [1] = *sp;
2675
2676 SP = bot + 1;
2677
2678 PUTBACK;
2679 }
2680
2681 return NORMAL;
2682}
2683
2684static void
2685api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2686{
2687 int i;
2688 SV **arg = PL_stack_base + ax;
2689 int items = PL_stack_sp - arg + 1;
2690
2691 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2692
2693 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2694 && PL_op->op_ppaddr != pp_slf)
2695 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2696
2697 CvFLAGS (cv) |= CVf_SLF;
2698 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2699 slf_cv = cv;
2700
2701 /* we patch the op, and then re-run the whole call */
2702 /* we have to put the same argument on the stack for this to work */
2703 /* and this will be done by pp_restore */
2704 slf_restore.op_next = (OP *)&slf_restore;
2705 slf_restore.op_type = OP_CUSTOM;
2706 slf_restore.op_ppaddr = pp_restore;
2707 slf_restore.op_first = PL_op;
2708
2709 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2710
2711 if (PL_op->op_flags & OPf_STACKED)
2712 {
2713 if (items > slf_arga)
2714 {
2715 slf_arga = items;
2716 Safefree (slf_argv);
2717 New (0, slf_argv, slf_arga, SV *);
2718 }
2719
2720 slf_argc = items;
2721
2722 for (i = 0; i < items; ++i)
2723 slf_argv [i] = SvREFCNT_inc (arg [i]);
2724 }
2725 else
2726 slf_argc = 0;
2727
2728 PL_op->op_ppaddr = pp_slf;
2729 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2730
2731 PL_op = (OP *)&slf_restore;
2732}
2733
2734/*****************************************************************************/
2735/* dynamic wind */
2736
2737static void
2738on_enterleave_call (pTHX_ SV *cb)
2739{
2740 dSP;
2741
2742 PUSHSTACK;
2743
2744 PUSHMARK (SP);
2745 PUTBACK;
2746 call_sv (cb, G_VOID | G_DISCARD);
2747 SPAGAIN;
2748
2749 POPSTACK;
2750}
2751
2752static SV *
2753coro_avp_pop_and_free (pTHX_ AV **avp)
2754{
2755 AV *av = *avp;
2756 SV *res = av_pop (av);
2757
2758 if (AvFILLp (av) < 0)
2759 {
2760 *avp = 0;
2761 SvREFCNT_dec (av);
2762 }
2763
2764 return res;
2765}
2766
2767static void
2768coro_pop_on_enter (pTHX_ void *coro)
2769{
2770 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2771 SvREFCNT_dec (cb);
2772}
2773
2774static void
2775coro_pop_on_leave (pTHX_ void *coro)
2776{
2777 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2778 on_enterleave_call (aTHX_ sv_2mortal (cb));
2779}
2780
2781/*****************************************************************************/
2782/* PerlIO::cede */
2783
2784typedef struct
2785{
2786 PerlIOBuf base;
2787 NV next, every;
2788} PerlIOCede;
2789
2790static IV ecb_cold
2791PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2792{
2793 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2794
2795 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2796 self->next = nvtime () + self->every;
2797
2798 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2799}
2800
2801static SV * ecb_cold
2802PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2803{
2804 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2805
2806 return newSVnv (self->every);
2807}
2808
2809static IV
2810PerlIOCede_flush (pTHX_ PerlIO *f)
2811{
2812 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2813 double now = nvtime ();
2814
2815 if (now >= self->next)
2816 {
2817 api_cede (aTHX);
2818 self->next = now + self->every;
2819 }
2820
2821 return PerlIOBuf_flush (aTHX_ f);
2822}
2823
2824static PerlIO_funcs PerlIO_cede =
2825{
2826 sizeof(PerlIO_funcs),
2827 "cede",
2828 sizeof(PerlIOCede),
2829 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2830 PerlIOCede_pushed,
2831 PerlIOBuf_popped,
2832 PerlIOBuf_open,
2833 PerlIOBase_binmode,
2834 PerlIOCede_getarg,
2835 PerlIOBase_fileno,
2836 PerlIOBuf_dup,
2837 PerlIOBuf_read,
2838 PerlIOBuf_unread,
2839 PerlIOBuf_write,
2840 PerlIOBuf_seek,
2841 PerlIOBuf_tell,
2842 PerlIOBuf_close,
2843 PerlIOCede_flush,
2844 PerlIOBuf_fill,
2845 PerlIOBase_eof,
2846 PerlIOBase_error,
2847 PerlIOBase_clearerr,
2848 PerlIOBase_setlinebuf,
2849 PerlIOBuf_get_base,
2850 PerlIOBuf_bufsiz,
2851 PerlIOBuf_get_ptr,
2852 PerlIOBuf_get_cnt,
2853 PerlIOBuf_set_ptrcnt,
2854};
2855
2856/*****************************************************************************/
2857/* Coro::Semaphore & Coro::Signal */
2858
2859static SV *
2860coro_waitarray_new (pTHX_ int count)
2861{
2862 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2863 AV *av = newAV ();
2864 SV **ary;
2865
2866 /* unfortunately, building manually saves memory */
2867 Newx (ary, 2, SV *);
2868 AvALLOC (av) = ary;
2869#if PERL_VERSION_ATLEAST (5,10,0)
2870 AvARRAY (av) = ary;
2871#else
2872 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2873 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2874 SvPVX ((SV *)av) = (char *)ary;
2875#endif
2876 AvMAX (av) = 1;
2877 AvFILLp (av) = 0;
2878 ary [0] = newSViv (count);
2879
2880 return newRV_noinc ((SV *)av);
2881}
2882
2883/* semaphore */
2884
2885static void
2886coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2887{
2888 SV *count_sv = AvARRAY (av)[0];
2889 IV count = SvIVX (count_sv);
2890
2891 count += adjust;
2892 SvIVX (count_sv) = count;
2893
2894 /* now wake up as many waiters as are expected to lock */
2895 while (count > 0 && AvFILLp (av) > 0)
2896 {
2897 SV *cb;
2898
2899 /* swap first two elements so we can shift a waiter */
2900 AvARRAY (av)[0] = AvARRAY (av)[1];
2901 AvARRAY (av)[1] = count_sv;
2902 cb = av_shift (av);
2903
2904 if (SvOBJECT (cb))
2905 {
2906 api_ready (aTHX_ cb);
2907 --count;
2908 }
2909 else if (SvTYPE (cb) == SVt_PVCV)
2910 {
2911 dSP;
2912 PUSHMARK (SP);
2913 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2914 PUTBACK;
2915 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2916 }
2917
2918 SvREFCNT_dec (cb);
2919 }
2920}
2921
2922static void
2923coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2924{
2925 /* call $sem->adjust (0) to possibly wake up some other waiters */
2926 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2927}
2928
2929static int
2930slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2931{
2932 AV *av = (AV *)frame->data;
2933 SV *count_sv = AvARRAY (av)[0];
2934 SV *coro_hv = SvRV (coro_current);
2935
2936 /* if we are about to throw, don't actually acquire the lock, just throw */
2937 if (CORO_THROW)
2938 return 0;
2939 else if (SvIVX (count_sv) > 0)
2940 {
2941 frame->destroy = 0;
2942
2943 if (acquire)
2944 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2945 else
2946 coro_semaphore_adjust (aTHX_ av, 0);
2947
2948 return 0;
2949 }
2950 else
2951 {
2952 int i;
2953 /* if we were woken up but can't down, we look through the whole */
2954 /* waiters list and only add us if we aren't in there already */
2955 /* this avoids some degenerate memory usage cases */
2956 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2957 if (AvARRAY (av)[i] == coro_hv)
2958 return 1;
2959
2960 av_push (av, SvREFCNT_inc (coro_hv));
2961 return 1;
2962 }
2963}
2964
2965static int
2966slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2967{
2968 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2969}
2970
2971static int
2972slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2973{
2974 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2975}
2976
2977static void
2978slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2979{
2980 AV *av = (AV *)SvRV (arg [0]);
2981
2982 if (SvIVX (AvARRAY (av)[0]) > 0)
2983 {
2984 frame->data = (void *)av;
2985 frame->prepare = prepare_nop;
2986 }
2987 else
2988 {
2989 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2990
2991 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2992 frame->prepare = prepare_schedule;
2993 /* to avoid race conditions when a woken-up coro gets terminated */
2994 /* we arrange for a temporary on_destroy that calls adjust (0) */
2995 frame->destroy = coro_semaphore_destroy;
2996 }
2997}
2998
2999static void
3000slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3001{
3002 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3003 frame->check = slf_check_semaphore_down;
3004}
3005
3006static void
3007slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3008{
3009 if (items >= 2)
3010 {
3011 /* callback form */
3012 AV *av = (AV *)SvRV (arg [0]);
3013 SV *cb_cv = s_get_cv_croak (arg [1]);
3014
3015 av_push (av, SvREFCNT_inc_NN (cb_cv));
3016
3017 if (SvIVX (AvARRAY (av)[0]) > 0)
3018 coro_semaphore_adjust (aTHX_ av, 0);
3019
3020 frame->prepare = prepare_nop;
3021 frame->check = slf_check_nop;
3022 }
3023 else
3024 {
3025 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3026 frame->check = slf_check_semaphore_wait;
3027 }
3028}
3029
3030/* signal */
3031
3032static void
3033coro_signal_wake (pTHX_ AV *av, int count)
3034{
3035 SvIVX (AvARRAY (av)[0]) = 0;
3036
3037 /* now signal count waiters */
3038 while (count > 0 && AvFILLp (av) > 0)
3039 {
3040 SV *cb;
3041
3042 /* swap first two elements so we can shift a waiter */
3043 cb = AvARRAY (av)[0];
3044 AvARRAY (av)[0] = AvARRAY (av)[1];
3045 AvARRAY (av)[1] = cb;
3046
3047 cb = av_shift (av);
3048
3049 if (SvTYPE (cb) == SVt_PVCV)
3050 {
3051 dSP;
3052 PUSHMARK (SP);
3053 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3054 PUTBACK;
3055 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3056 }
3057 else
3058 {
3059 api_ready (aTHX_ cb);
3060 sv_setiv (cb, 0); /* signal waiter */
3061 }
3062
3063 SvREFCNT_dec (cb);
3064
3065 --count;
3066 }
3067}
3068
3069static int
3070slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3071{
3072 /* if we are about to throw, also stop waiting */
3073 return SvROK ((SV *)frame->data) && !CORO_THROW;
3074}
3075
3076static void
3077slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3078{
3079 AV *av = (AV *)SvRV (arg [0]);
3080
3081 if (items >= 2)
3082 {
3083 SV *cb_cv = s_get_cv_croak (arg [1]);
3084 av_push (av, SvREFCNT_inc_NN (cb_cv));
3085
3086 if (SvIVX (AvARRAY (av)[0]))
3087 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3088
3089 frame->prepare = prepare_nop;
3090 frame->check = slf_check_nop;
3091 }
3092 else if (SvIVX (AvARRAY (av)[0]))
3093 {
3094 SvIVX (AvARRAY (av)[0]) = 0;
3095 frame->prepare = prepare_nop;
3096 frame->check = slf_check_nop;
3097 }
3098 else
3099 {
3100 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3101
3102 av_push (av, waiter);
3103
3104 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3105 frame->prepare = prepare_schedule;
3106 frame->check = slf_check_signal_wait;
3107 }
3108}
3109
3110/*****************************************************************************/
3111/* Coro::AIO */
3112
3113#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3114
3115/* helper storage struct */
3116struct io_state
3117{
3118 int errorno;
3119 I32 laststype; /* U16 in 5.10.0 */
3120 int laststatval;
3121 Stat_t statcache;
3122};
3123
3124static void
3125coro_aio_callback (pTHX_ CV *cv)
3126{
3127 dXSARGS;
3128 AV *state = (AV *)S_GENSUB_ARG;
3129 SV *coro = av_pop (state);
3130 SV *data_sv = newSV (sizeof (struct io_state));
3131
3132 av_extend (state, items - 1);
3133
3134 sv_upgrade (data_sv, SVt_PV);
3135 SvCUR_set (data_sv, sizeof (struct io_state));
3136 SvPOK_only (data_sv);
3137
3138 {
3139 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3140
3141 data->errorno = errno;
3142 data->laststype = PL_laststype;
3143 data->laststatval = PL_laststatval;
3144 data->statcache = PL_statcache;
3145 }
3146
3147 /* now build the result vector out of all the parameters and the data_sv */
3148 {
3149 int i;
3150
3151 for (i = 0; i < items; ++i)
3152 av_push (state, SvREFCNT_inc_NN (ST (i)));
3153 }
3154
3155 av_push (state, data_sv);
3156
3157 api_ready (aTHX_ coro);
3158 SvREFCNT_dec (coro);
3159 SvREFCNT_dec ((AV *)state);
3160}
3161
3162static int
3163slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3164{
3165 AV *state = (AV *)frame->data;
3166
3167 /* if we are about to throw, return early */
3168 /* this does not cancel the aio request, but at least */
3169 /* it quickly returns */
3170 if (CORO_THROW)
3171 return 0;
3172
3173 /* one element that is an RV? repeat! */
3174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3175 return 1;
3176
3177 /* restore status */
3178 {
3179 SV *data_sv = av_pop (state);
3180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3181
3182 errno = data->errorno;
3183 PL_laststype = data->laststype;
3184 PL_laststatval = data->laststatval;
3185 PL_statcache = data->statcache;
3186
3187 SvREFCNT_dec (data_sv);
3188 }
3189
3190 /* push result values */
3191 {
3192 dSP;
3193 int i;
3194
3195 EXTEND (SP, AvFILLp (state) + 1);
3196 for (i = 0; i <= AvFILLp (state); ++i)
3197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3198
3199 PUTBACK;
3200 }
3201
3202 return 0;
3203}
3204
3205static void
3206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3207{
3208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3209 SV *coro_hv = SvRV (coro_current);
3210 struct coro *coro = SvSTATE_hv (coro_hv);
3211
3212 /* put our coroutine id on the state arg */
3213 av_push (state, SvREFCNT_inc_NN (coro_hv));
3214
3215 /* first see whether we have a non-zero priority and set it as AIO prio */
3216 if (coro->prio)
3217 {
3218 dSP;
3219
3220 static SV *prio_cv;
3221 static SV *prio_sv;
3222
3223 if (ecb_expect_false (!prio_cv))
3224 {
3225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3226 prio_sv = newSViv (0);
3227 }
3228
3229 PUSHMARK (SP);
3230 sv_setiv (prio_sv, coro->prio);
3231 XPUSHs (prio_sv);
3232
3233 PUTBACK;
3234 call_sv (prio_cv, G_VOID | G_DISCARD);
3235 }
3236
3237 /* now call the original request */
3238 {
3239 dSP;
3240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3241 int i;
3242
3243 PUSHMARK (SP);
3244
3245 /* first push all args to the stack */
3246 EXTEND (SP, items + 1);
3247
3248 for (i = 0; i < items; ++i)
3249 PUSHs (arg [i]);
3250
3251 /* now push the callback closure */
3252 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3253
3254 /* now call the AIO function - we assume our request is uncancelable */
3255 PUTBACK;
3256 call_sv ((SV *)req, G_VOID | G_DISCARD);
3257 }
3258
3259 /* now that the request is going, we loop till we have a result */
3260 frame->data = (void *)state;
3261 frame->prepare = prepare_schedule;
3262 frame->check = slf_check_aio_req;
3263}
3264
3265static void
3266coro_aio_req_xs (pTHX_ CV *cv)
3267{
3268 dXSARGS;
3269
3270 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3271
3272 XSRETURN_EMPTY;
3273}
3274
3275/*****************************************************************************/
3276
3277#if CORO_CLONE
3278# include "clone.c"
3279#endif
3280
3281/*****************************************************************************/
3282
3283static SV *
3284coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3285{
3286 SV *coro_sv;
3287 struct coro *coro;
3288 MAGIC *mg;
3289 HV *hv;
3290 SV *cb;
3291 int i;
3292
3293 if (argc > 0)
3294 {
3295 cb = s_get_cv_croak (argv [0]);
3296
3297 if (!is_coro)
3298 {
3299 if (CvISXSUB (cb))
3300 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3301
3302 if (!CvROOT (cb))
3303 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3304 }
3305 }
3306
3307 Newz (0, coro, 1, struct coro);
3308 coro->args = newAV ();
3309 coro->flags = CF_NEW;
3310
3311 if (coro_first) coro_first->prev = coro;
3312 coro->next = coro_first;
3313 coro_first = coro;
3314
3315 coro->hv = hv = newHV ();
3316 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3317 mg->mg_flags |= MGf_DUP;
3318 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3319
3320 if (argc > 0)
3321 {
3322 av_extend (coro->args, argc + is_coro - 1);
3323
3324 if (is_coro)
3325 {
3326 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3327 cb = (SV *)cv_coro_run;
3328 }
3329
3330 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3331
3332 for (i = 1; i < argc; i++)
3333 av_push (coro->args, newSVsv (argv [i]));
3334 }
3335
3336 return coro_sv;
3337}
3338
3339#ifndef __cplusplus
3340ecb_cold XS(boot_Coro__State);
3341#endif
3342
3343#if CORO_JIT
3344
3345static void ecb_noinline ecb_cold
3346pushav_3uv (pTHX_ UV a, UV b, UV c)
3347{
3348 dSP;
3349 AV *av = newAV ();
3350
3351 av_store (av, 2, newSVuv (c));
3352 av_store (av, 1, newSVuv (b));
3353 av_store (av, 0, newSVuv (a));
3354
3355 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3356
3357 PUTBACK;
3358}
3359
3360static void ecb_noinline ecb_cold
3361jit_init (pTHX)
3362{
3363 dSP;
3364 SV *load, *save;
3365 char *map_base;
3366 char *load_ptr, *save_ptr;
3367 STRLEN load_len, save_len;
3368 int count;
3369
3370 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3371
3372 PUSHMARK (SP);
3373#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3374# include "state.h"
3375#undef VARx
3376 count = call_pv ("Coro::State::_jit", G_ARRAY);
3377 SPAGAIN;
3378
3379 save = POPs; save_ptr = SvPVbyte (save, save_len);
3380 load = POPs; load_ptr = SvPVbyte (load, load_len);
3381
3382 map_base = mmap (0, load_len + save_len + 16, PROT_EXEC | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3383
3384 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3385
3386 load_perl_slots = (load_save_perl_slots_type)map_base;
3387 memcpy (map_base, load_ptr, load_len);
3388
3389 map_base += (load_len + 15) & ~15;
3390
3391 save_perl_slots = (load_save_perl_slots_type)map_base;
3392 memcpy (map_base, save_ptr, save_len);
3393
3394 PUTBACK;
3395 eval_pv ("undef &Coro::State::_jit", 1);
3396}
3397
3398#endif
3399
1493MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3400MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494 3401
1495PROTOTYPES: DISABLE 3402PROTOTYPES: DISABLE
1496 3403
1497BOOT: 3404BOOT:
1498{ 3405{
1499#ifdef USE_ITHREADS 3406#ifdef USE_ITHREADS
1500 MUTEX_INIT (&coro_mutex); 3407# if CORO_PTHREAD
3408 coro_thx = PERL_GET_CONTEXT;
3409# endif
1501#endif 3410#endif
1502 BOOT_PAGESIZE; 3411 BOOT_PAGESIZE;
1503 3412
3413 /* perl defines these to check for existance first, but why it doesn't */
3414 /* just create them one at init time is not clear to me, except for */
3415 /* programs trying to delete them, but... */
3416 /* anyway, we declare this as invalid and make sure they are initialised here */
3417 DEFSV;
3418 ERRSV;
3419
3420 cctx_current = cctx_new_empty ();
3421
1504 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3422 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3423 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506 3424
3425 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
3426 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
3427 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
3428
1507 hv_sig = coro_get_hv ("SIG", TRUE); 3429 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 3430 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 3431 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1510
1511 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513 3432
1514 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3433 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515 3434
1516 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3435 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3436 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1522 main_top_env = PL_top_env; 3441 main_top_env = PL_top_env;
1523 3442
1524 while (main_top_env->je_prev) 3443 while (main_top_env->je_prev)
1525 main_top_env = main_top_env->je_prev; 3444 main_top_env = main_top_env->je_prev;
1526 3445
3446 {
3447 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3448
3449 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3450 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3451
3452 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3453 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3454 }
3455
1527 coroapi.ver = CORO_API_VERSION; 3456 coroapi.ver = CORO_API_VERSION;
3457 coroapi.rev = CORO_API_REVISION;
3458
1528 coroapi.transfer = api_transfer; 3459 coroapi.transfer = api_transfer;
1529 3460
3461 coroapi.sv_state = SvSTATE_;
3462 coroapi.execute_slf = api_execute_slf;
3463 coroapi.prepare_nop = prepare_nop;
3464 coroapi.prepare_schedule = prepare_schedule;
3465 coroapi.prepare_cede = prepare_cede;
3466 coroapi.prepare_cede_notself = prepare_cede_notself;
3467
3468 time_init (aTHX);
3469
1530 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3470 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3471#if CORO_JIT
3472 PUTBACK;
3473 jit_init (aTHX);
3474 SPAGAIN;
3475#endif
1531} 3476}
1532 3477
1533SV * 3478SV *
1534new (char *klass, ...) 3479new (SV *klass, ...)
3480 ALIAS:
3481 Coro::new = 1
1535 CODE: 3482 CODE:
1536{ 3483 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1537 struct coro *coro;
1538 HV *hv;
1539 int i;
1540
1541 Newz (0, coro, 1, struct coro);
1542 coro->args = newAV ();
1543 coro->flags = CF_NEW;
1544
1545 if (coro_first) coro_first->prev = coro;
1546 coro->next = coro_first;
1547 coro_first = coro;
1548
1549 coro->hv = hv = newHV ();
1550 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1551 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552
1553 av_extend (coro->args, items - 1);
1554 for (i = 1; i < items; i++)
1555 av_push (coro->args, newSVsv (ST (i)));
1556}
1557 OUTPUT:
1558 RETVAL
1559
1560# these not obviously related functions are all rolled into the same xs
1561# function to increase chances that they all will call transfer with the same
1562# stack offset
1563void
1564_set_stacklevel (...)
1565 ALIAS:
1566 Coro::State::transfer = 1
1567 Coro::schedule = 2
1568 Coro::cede = 3
1569 Coro::cede_notself = 4
1570 CODE:
1571{
1572 struct transfer_args ta;
1573
1574 switch (ix)
1575 {
1576 case 0:
1577 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1578 ta.next = 0;
1579 break;
1580
1581 case 1:
1582 if (items != 2)
1583 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1584
1585 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1586 break;
1587
1588 case 2:
1589 prepare_schedule (aTHX_ &ta);
1590 break;
1591
1592 case 3:
1593 prepare_cede (aTHX_ &ta);
1594 break;
1595
1596 case 4:
1597 if (!prepare_cede_notself (aTHX_ &ta))
1598 XSRETURN_EMPTY;
1599
1600 break;
1601 }
1602
1603 BARRIER;
1604 TRANSFER (ta);
1605
1606 if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1607 XSRETURN_YES;
1608}
1609
1610bool
1611_destroy (SV *coro_sv)
1612 CODE:
1613 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1614 OUTPUT: 3484 OUTPUT:
1615 RETVAL 3485 RETVAL
1616 3486
1617void 3487void
3488transfer (...)
3489 PROTOTYPE: $$
3490 CODE:
3491 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3492
3493void
1618_exit (code) 3494_exit (int code)
1619 int code
1620 PROTOTYPE: $ 3495 PROTOTYPE: $
1621 CODE: 3496 CODE:
1622 _exit (code); 3497 _exit (code);
1623 3498
3499SV *
3500clone (Coro::State coro)
3501 CODE:
3502{
3503#if CORO_CLONE
3504 struct coro *ncoro = coro_clone (aTHX_ coro);
3505 MAGIC *mg;
3506 /* TODO: too much duplication */
3507 ncoro->hv = newHV ();
3508 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3509 mg->mg_flags |= MGf_DUP;
3510 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3511#else
3512 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3513#endif
3514}
3515 OUTPUT:
3516 RETVAL
3517
1624int 3518int
1625cctx_stacksize (int new_stacksize = 0) 3519cctx_stacksize (int new_stacksize = 0)
3520 PROTOTYPE: ;$
1626 CODE: 3521 CODE:
1627 RETVAL = coro_stacksize; 3522 RETVAL = cctx_stacksize;
1628 if (new_stacksize) 3523 if (new_stacksize)
3524 {
1629 coro_stacksize = new_stacksize; 3525 cctx_stacksize = new_stacksize;
3526 ++cctx_gen;
3527 }
1630 OUTPUT: 3528 OUTPUT:
1631 RETVAL 3529 RETVAL
1632 3530
1633int 3531int
3532cctx_max_idle (int max_idle = 0)
3533 PROTOTYPE: ;$
3534 CODE:
3535 RETVAL = cctx_max_idle;
3536 if (max_idle > 1)
3537 cctx_max_idle = max_idle;
3538 OUTPUT:
3539 RETVAL
3540
3541int
1634cctx_count () 3542cctx_count ()
3543 PROTOTYPE:
1635 CODE: 3544 CODE:
1636 RETVAL = cctx_count; 3545 RETVAL = cctx_count;
1637 OUTPUT: 3546 OUTPUT:
1638 RETVAL 3547 RETVAL
1639 3548
1640int 3549int
1641cctx_idle () 3550cctx_idle ()
3551 PROTOTYPE:
1642 CODE: 3552 CODE:
1643 RETVAL = cctx_idle; 3553 RETVAL = cctx_idle;
1644 OUTPUT: 3554 OUTPUT:
1645 RETVAL 3555 RETVAL
1646 3556
1647void 3557void
1648list () 3558list ()
3559 PROTOTYPE:
1649 PPCODE: 3560 PPCODE:
1650{ 3561{
1651 struct coro *coro; 3562 struct coro *coro;
1652 for (coro = coro_first; coro; coro = coro->next) 3563 for (coro = coro_first; coro; coro = coro->next)
1653 if (coro->hv) 3564 if (coro->hv)
… …
1658call (Coro::State coro, SV *coderef) 3569call (Coro::State coro, SV *coderef)
1659 ALIAS: 3570 ALIAS:
1660 eval = 1 3571 eval = 1
1661 CODE: 3572 CODE:
1662{ 3573{
1663 if (coro->mainstack) 3574 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1664 { 3575 {
1665 struct coro temp; 3576 struct coro *current = SvSTATE_current;
3577 struct CoroSLF slf_save;
1666 3578
1667 if (!(coro->flags & CF_RUNNING)) 3579 if (current != coro)
1668 { 3580 {
3581 PUTBACK;
1669 save_perl (aTHX_ &temp); 3582 save_perl (aTHX_ current);
1670 load_perl (aTHX_ coro); 3583 load_perl (aTHX_ coro);
3584 /* the coro is most likely in an active SLF call.
3585 * while not strictly required (the code we execute is
3586 * not allowed to call any SLF functions), it's cleaner
3587 * to reinitialise the slf_frame and restore it later.
3588 * This might one day allow us to actually do SLF calls
3589 * from code executed here.
3590 */
3591 slf_save = slf_frame;
3592 slf_frame.prepare = 0;
3593 SPAGAIN;
1671 } 3594 }
1672 3595
1673 { 3596 PUSHSTACK;
1674 dSP; 3597
1675 ENTER;
1676 SAVETMPS;
1677 PUSHMARK (SP); 3598 PUSHMARK (SP);
1678 PUTBACK; 3599 PUTBACK;
1679 3600
1680 if (ix) 3601 if (ix)
1681 eval_sv (coderef, 0); 3602 eval_sv (coderef, 0);
1682 else 3603 else
1683 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3604 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1684 3605
3606 POPSTACK;
1685 SPAGAIN; 3607 SPAGAIN;
1686 FREETMPS;
1687 LEAVE;
1688 PUTBACK;
1689 }
1690 3608
1691 if (!(coro->flags & CF_RUNNING)) 3609 if (current != coro)
1692 { 3610 {
3611 PUTBACK;
3612 slf_frame = slf_save;
1693 save_perl (aTHX_ coro); 3613 save_perl (aTHX_ coro);
1694 load_perl (aTHX_ &temp); 3614 load_perl (aTHX_ current);
3615 SPAGAIN;
1695 } 3616 }
1696 } 3617 }
1697} 3618}
1698 3619
1699SV * 3620SV *
… …
1701 PROTOTYPE: $ 3622 PROTOTYPE: $
1702 ALIAS: 3623 ALIAS:
1703 is_ready = CF_READY 3624 is_ready = CF_READY
1704 is_running = CF_RUNNING 3625 is_running = CF_RUNNING
1705 is_new = CF_NEW 3626 is_new = CF_NEW
1706 is_destroyed = CF_DESTROYED 3627 is_destroyed = CF_ZOMBIE
3628 is_zombie = CF_ZOMBIE
3629 is_suspended = CF_SUSPENDED
1707 CODE: 3630 CODE:
1708 RETVAL = boolSV (coro->flags & ix); 3631 RETVAL = boolSV (coro->flags & ix);
1709 OUTPUT: 3632 OUTPUT:
1710 RETVAL 3633 RETVAL
1711 3634
1712void 3635void
3636throw (Coro::State self, SV *exception = &PL_sv_undef)
3637 PROTOTYPE: $;$
3638 CODE:
3639{
3640 struct coro *current = SvSTATE_current;
3641 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3642 SvREFCNT_dec (*exceptionp);
3643 SvGETMAGIC (exception);
3644 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3645}
3646
3647void
1713api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3648api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3649 PROTOTYPE: $;$
3650 C_ARGS: aTHX_ coro, flags
1714 3651
1715SV * 3652SV *
1716has_stack (Coro::State coro) 3653has_cctx (Coro::State coro)
1717 PROTOTYPE: $ 3654 PROTOTYPE: $
1718 CODE: 3655 CODE:
1719 RETVAL = boolSV (!!coro->cctx); 3656 /* maybe manage the running flag differently */
3657 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1720 OUTPUT: 3658 OUTPUT:
1721 RETVAL 3659 RETVAL
1722 3660
1723int 3661int
1724is_traced (Coro::State coro) 3662is_traced (Coro::State coro)
… …
1726 CODE: 3664 CODE:
1727 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3665 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1728 OUTPUT: 3666 OUTPUT:
1729 RETVAL 3667 RETVAL
1730 3668
1731IV 3669UV
1732rss (Coro::State coro) 3670rss (Coro::State coro)
1733 PROTOTYPE: $ 3671 PROTOTYPE: $
1734 ALIAS: 3672 ALIAS:
1735 usecount = 1 3673 usecount = 1
1736 CODE: 3674 CODE:
… …
1740 case 1: RETVAL = coro->usecount; break; 3678 case 1: RETVAL = coro->usecount; break;
1741 } 3679 }
1742 OUTPUT: 3680 OUTPUT:
1743 RETVAL 3681 RETVAL
1744 3682
3683void
3684force_cctx ()
3685 PROTOTYPE:
3686 CODE:
3687 cctx_current->idle_sp = 0;
3688
3689void
3690swap_defsv (Coro::State self)
3691 PROTOTYPE: $
3692 ALIAS:
3693 swap_defav = 1
3694 CODE:
3695 if (!self->slot)
3696 croak ("cannot swap state with coroutine that has no saved state,");
3697 else
3698 {
3699 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3700 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3701
3702 SV *tmp = *src; *src = *dst; *dst = tmp;
3703 }
3704
3705void
3706cancel (Coro::State self)
3707 CODE:
3708 coro_state_destroy (aTHX_ self);
3709
3710SV *
3711enable_times (int enabled = enable_times)
3712 CODE:
3713{
3714 RETVAL = boolSV (enable_times);
3715
3716 if (enabled != enable_times)
3717 {
3718 enable_times = enabled;
3719
3720 coro_times_update ();
3721 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3722 }
3723}
3724 OUTPUT:
3725 RETVAL
3726
3727void
3728times (Coro::State self)
3729 PPCODE:
3730{
3731 struct coro *current = SvSTATE (coro_current);
3732
3733 if (ecb_expect_false (current == self))
3734 {
3735 coro_times_update ();
3736 coro_times_add (SvSTATE (coro_current));
3737 }
3738
3739 EXTEND (SP, 2);
3740 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3741 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3742
3743 if (ecb_expect_false (current == self))
3744 coro_times_sub (SvSTATE (coro_current));
3745}
3746
3747void
3748swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3749 CODE:
3750{
3751 struct coro *current = SvSTATE_current;
3752
3753 if (current == coro)
3754 SWAP_SVS (current);
3755
3756 if (!coro->swap_sv)
3757 coro->swap_sv = newAV ();
3758
3759 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3760 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3761
3762 if (current == coro)
3763 SWAP_SVS (current);
3764}
3765
1745 3766
1746MODULE = Coro::State PACKAGE = Coro 3767MODULE = Coro::State PACKAGE = Coro
1747 3768
1748BOOT: 3769BOOT:
1749{ 3770{
1750 int i;
1751
1752 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3771 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1753 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3772 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3773 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3774 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1754 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3775 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3776 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3777 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3778 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1755 3779
1756 coro_current = coro_get_sv ("Coro::current", FALSE); 3780 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1757 SvREADONLY_on (coro_current); 3781 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
1758 3782 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3783 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3784
1759 coro_stash = gv_stashpv ("Coro", TRUE); 3785 coro_stash = gv_stashpv ("Coro", TRUE);
1760 3786
1761 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3787 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1762 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3788 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1763 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3789 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1764 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3790 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1765 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3791 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1766 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3792 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1767
1768 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1769 coro_ready[i] = newAV ();
1770 3793
1771 { 3794 {
1772 SV *sv = perl_get_sv ("Coro::API", TRUE); 3795 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1773 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1774 3796
1775 coroapi.schedule = api_schedule; 3797 coroapi.schedule = api_schedule;
3798 coroapi.schedule_to = api_schedule_to;
1776 coroapi.cede = api_cede; 3799 coroapi.cede = api_cede;
1777 coroapi.cede_notself = api_cede_notself; 3800 coroapi.cede_notself = api_cede_notself;
1778 coroapi.ready = api_ready; 3801 coroapi.ready = api_ready;
1779 coroapi.is_ready = api_is_ready; 3802 coroapi.is_ready = api_is_ready;
1780 coroapi.nready = &coro_nready; 3803 coroapi.nready = coro_nready;
1781 coroapi.current = coro_current; 3804 coroapi.current = coro_current;
1782 3805
1783 GCoroAPI = &coroapi; 3806 /*GCoroAPI = &coroapi;*/
1784 sv_setiv (sv, (IV)&coroapi); 3807 sv_setiv (sv, (IV)&coroapi);
1785 SvREADONLY_on (sv); 3808 SvREADONLY_on (sv);
1786 } 3809 }
1787} 3810}
3811
3812SV *
3813async (...)
3814 PROTOTYPE: &@
3815 CODE:
3816 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3817 api_ready (aTHX_ RETVAL);
3818 OUTPUT:
3819 RETVAL
3820
3821void
3822_destroy (Coro::State coro)
3823 CODE:
3824 /* used by the manager thread */
3825 coro_state_destroy (aTHX_ coro);
3826
3827void
3828on_destroy (Coro::State coro, SV *cb)
3829 CODE:
3830 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3831
3832void
3833join (...)
3834 CODE:
3835 CORO_EXECUTE_SLF_XS (slf_init_join);
3836
3837void
3838terminate (...)
3839 CODE:
3840 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3841
3842void
3843cancel (...)
3844 CODE:
3845 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3846
3847int
3848safe_cancel (Coro::State self, ...)
3849 C_ARGS: aTHX_ self, &ST (1), items - 1
3850
3851void
3852schedule (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3855
3856void
3857schedule_to (...)
3858 CODE:
3859 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3860
3861void
3862cede_to (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3865
3866void
3867cede (...)
3868 CODE:
3869 CORO_EXECUTE_SLF_XS (slf_init_cede);
3870
3871void
3872cede_notself (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1788 3875
1789void 3876void
1790_set_current (SV *current) 3877_set_current (SV *current)
1791 PROTOTYPE: $ 3878 PROTOTYPE: $
1792 CODE: 3879 CODE:
1793 SvREFCNT_dec (SvRV (coro_current)); 3880 SvREFCNT_dec (SvRV (coro_current));
1794 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3881 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3882
3883void
3884_set_readyhook (SV *hook)
3885 PROTOTYPE: $
3886 CODE:
3887 SvREFCNT_dec (coro_readyhook);
3888 SvGETMAGIC (hook);
3889 if (SvOK (hook))
3890 {
3891 coro_readyhook = newSVsv (hook);
3892 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3893 }
3894 else
3895 {
3896 coro_readyhook = 0;
3897 CORO_READYHOOK = 0;
3898 }
1795 3899
1796int 3900int
1797prio (Coro::State coro, int newprio = 0) 3901prio (Coro::State coro, int newprio = 0)
3902 PROTOTYPE: $;$
1798 ALIAS: 3903 ALIAS:
1799 nice = 1 3904 nice = 1
1800 CODE: 3905 CODE:
1801{ 3906{
1802 RETVAL = coro->prio; 3907 RETVAL = coro->prio;
… …
1804 if (items > 1) 3909 if (items > 1)
1805 { 3910 {
1806 if (ix) 3911 if (ix)
1807 newprio = coro->prio - newprio; 3912 newprio = coro->prio - newprio;
1808 3913
1809 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3914 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1810 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3915 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1811 3916
1812 coro->prio = newprio; 3917 coro->prio = newprio;
1813 } 3918 }
1814} 3919}
1815 OUTPUT: 3920 OUTPUT:
… …
1817 3922
1818SV * 3923SV *
1819ready (SV *self) 3924ready (SV *self)
1820 PROTOTYPE: $ 3925 PROTOTYPE: $
1821 CODE: 3926 CODE:
1822 RETVAL = boolSV (api_ready (self)); 3927 RETVAL = boolSV (api_ready (aTHX_ self));
1823 OUTPUT: 3928 OUTPUT:
1824 RETVAL 3929 RETVAL
1825 3930
1826int 3931int
1827nready (...) 3932nready (...)
… …
1830 RETVAL = coro_nready; 3935 RETVAL = coro_nready;
1831 OUTPUT: 3936 OUTPUT:
1832 RETVAL 3937 RETVAL
1833 3938
1834void 3939void
1835throw (Coro::State self, SV *throw = &PL_sv_undef) 3940suspend (Coro::State self)
1836 PROTOTYPE: $;$ 3941 PROTOTYPE: $
1837 CODE: 3942 CODE:
1838 SvREFCNT_dec (self->throw); 3943 self->flags |= CF_SUSPENDED;
1839 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1840 3944
1841# for async_pool speedup
1842void 3945void
1843_pool_1 (SV *cb) 3946resume (Coro::State self)
3947 PROTOTYPE: $
1844 CODE: 3948 CODE:
1845{ 3949 self->flags &= ~CF_SUSPENDED;
1846 struct coro *coro = SvSTATE (coro_current);
1847 HV *hv = (HV *)SvRV (coro_current);
1848 AV *defav = GvAV (PL_defgv);
1849 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1850 AV *invoke_av;
1851 int i, len;
1852 3950
1853 if (!invoke) 3951void
1854 croak ("\3async_pool terminate\2\n"); 3952_pool_handler (...)
3953 CODE:
3954 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1855 3955
1856 SvREFCNT_dec (coro->saved_deffh); 3956void
1857 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3957async_pool (SV *cv, ...)
3958 PROTOTYPE: &@
3959 PPCODE:
3960{
3961 HV *hv = (HV *)av_pop (av_async_pool);
3962 AV *av = newAV ();
3963 SV *cb = ST (0);
3964 int i;
1858 3965
1859 hv_store (hv, "desc", sizeof ("desc") - 1, 3966 av_extend (av, items - 2);
1860 newSVpvn (strpair ("[async_pool]")), 0); 3967 for (i = 1; i < items; ++i)
3968 av_push (av, SvREFCNT_inc_NN (ST (i)));
1861 3969
1862 invoke_av = (AV *)SvRV (invoke); 3970 if ((SV *)hv == &PL_sv_undef)
1863 len = av_len (invoke_av);
1864
1865 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1866
1867 if (len > 0)
1868 { 3971 {
1869 av_fill (defav, len - 1); 3972 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
1870 for (i = 0; i < len; ++i) 3973 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
1871 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3974 SvREFCNT_dec (sv);
1872 } 3975 }
1873 3976
3977 {
3978 struct coro *coro = SvSTATE_hv (hv);
3979
3980 assert (!coro->invoke_cb);
3981 assert (!coro->invoke_av);
3982 coro->invoke_cb = SvREFCNT_inc (cb);
3983 coro->invoke_av = av;
3984 }
3985
3986 api_ready (aTHX_ (SV *)hv);
3987
3988 if (GIMME_V != G_VOID)
3989 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3990 else
1874 SvREFCNT_dec (invoke); 3991 SvREFCNT_dec (hv);
1875} 3992}
1876 3993
1877void 3994SV *
1878_pool_2 (SV *cb) 3995rouse_cb ()
3996 PROTOTYPE:
1879 CODE: 3997 CODE:
1880{ 3998 RETVAL = coro_new_rouse_cb (aTHX);
1881 struct coro *coro = SvSTATE (coro_current);
1882
1883 sv_setsv (cb, &PL_sv_undef);
1884
1885 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1886 coro->saved_deffh = 0;
1887
1888 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1889 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1890 croak ("\3async_pool terminate\2\n");
1891
1892 av_clear (GvAV (PL_defgv));
1893 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1894 newSVpvn (strpair ("[async_pool idle]")), 0);
1895
1896 coro->prio = 0;
1897
1898 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1899 api_trace (coro_current, 0);
1900
1901 av_push (av_async_pool, newSVsv (coro_current));
1902}
1903
1904
1905MODULE = Coro::State PACKAGE = Coro::AIO
1906
1907SV *
1908_get_state ()
1909 CODE:
1910{
1911 struct io_state *data;
1912
1913 RETVAL = newSV (sizeof (struct io_state));
1914 data = (struct io_state *)SvPVX (RETVAL);
1915 SvCUR_set (RETVAL, sizeof (struct io_state));
1916 SvPOK_only (RETVAL);
1917
1918 data->errorno = errno;
1919 data->laststype = PL_laststype;
1920 data->laststatval = PL_laststatval;
1921 data->statcache = PL_statcache;
1922}
1923 OUTPUT: 3999 OUTPUT:
1924 RETVAL 4000 RETVAL
1925 4001
1926void 4002void
1927_set_state (char *data_) 4003rouse_wait (...)
4004 PROTOTYPE: ;$
4005 PPCODE:
4006 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4007
4008void
4009on_enter (SV *block)
4010 ALIAS:
4011 on_leave = 1
1928 PROTOTYPE: $ 4012 PROTOTYPE: &
1929 CODE: 4013 CODE:
1930{ 4014{
1931 struct io_state *data = (void *)data_; 4015 struct coro *coro = SvSTATE_current;
4016 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1932 4017
1933 errno = data->errorno; 4018 block = s_get_cv_croak (block);
1934 PL_laststype = data->laststype;
1935 PL_laststatval = data->laststatval;
1936 PL_statcache = data->statcache;
1937}
1938 4019
4020 if (!*avp)
4021 *avp = newAV ();
4022
4023 av_push (*avp, SvREFCNT_inc (block));
4024
4025 if (!ix)
4026 on_enterleave_call (aTHX_ block);
4027
4028 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4029 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4030 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4031}
4032
4033
4034MODULE = Coro::State PACKAGE = PerlIO::cede
4035
4036BOOT:
4037 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4038
4039
4040MODULE = Coro::State PACKAGE = Coro::Semaphore
4041
4042SV *
4043new (SV *klass, SV *count = 0)
4044 CODE:
4045{
4046 int semcnt = 1;
4047
4048 if (count)
4049 {
4050 SvGETMAGIC (count);
4051
4052 if (SvOK (count))
4053 semcnt = SvIV (count);
4054 }
4055
4056 RETVAL = sv_bless (
4057 coro_waitarray_new (aTHX_ semcnt),
4058 GvSTASH (CvGV (cv))
4059 );
4060}
4061 OUTPUT:
4062 RETVAL
4063
4064# helper for Coro::Channel and others
4065SV *
4066_alloc (int count)
4067 CODE:
4068 RETVAL = coro_waitarray_new (aTHX_ count);
4069 OUTPUT:
4070 RETVAL
4071
4072SV *
4073count (SV *self)
4074 CODE:
4075 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4076 OUTPUT:
4077 RETVAL
4078
4079void
4080up (SV *self, int adjust = 1)
4081 ALIAS:
4082 adjust = 1
4083 CODE:
4084 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4085
4086void
4087down (...)
4088 CODE:
4089 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4090
4091void
4092wait (...)
4093 CODE:
4094 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4095
4096void
4097try (SV *self)
4098 PPCODE:
4099{
4100 AV *av = (AV *)SvRV (self);
4101 SV *count_sv = AvARRAY (av)[0];
4102 IV count = SvIVX (count_sv);
4103
4104 if (count > 0)
4105 {
4106 --count;
4107 SvIVX (count_sv) = count;
4108 XSRETURN_YES;
4109 }
4110 else
4111 XSRETURN_NO;
4112}
4113
4114void
4115waiters (SV *self)
4116 PPCODE:
4117{
4118 AV *av = (AV *)SvRV (self);
4119 int wcount = AvFILLp (av) + 1 - 1;
4120
4121 if (GIMME_V == G_SCALAR)
4122 XPUSHs (sv_2mortal (newSViv (wcount)));
4123 else
4124 {
4125 int i;
4126 EXTEND (SP, wcount);
4127 for (i = 1; i <= wcount; ++i)
4128 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4129 }
4130}
4131
4132MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4133
4134void
4135_may_delete (SV *sem, int count, int extra_refs)
4136 PPCODE:
4137{
4138 AV *av = (AV *)SvRV (sem);
4139
4140 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4141 && AvFILLp (av) == 0 /* no waiters, just count */
4142 && SvIV (AvARRAY (av)[0]) == count)
4143 XSRETURN_YES;
4144
4145 XSRETURN_NO;
4146}
4147
4148MODULE = Coro::State PACKAGE = Coro::Signal
4149
4150SV *
4151new (SV *klass)
4152 CODE:
4153 RETVAL = sv_bless (
4154 coro_waitarray_new (aTHX_ 0),
4155 GvSTASH (CvGV (cv))
4156 );
4157 OUTPUT:
4158 RETVAL
4159
4160void
4161wait (...)
4162 CODE:
4163 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4164
4165void
4166broadcast (SV *self)
4167 CODE:
4168{
4169 AV *av = (AV *)SvRV (self);
4170 coro_signal_wake (aTHX_ av, AvFILLp (av));
4171}
4172
4173void
4174send (SV *self)
4175 CODE:
4176{
4177 AV *av = (AV *)SvRV (self);
4178
4179 if (AvFILLp (av))
4180 coro_signal_wake (aTHX_ av, 1);
4181 else
4182 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4183}
4184
4185IV
4186awaited (SV *self)
4187 CODE:
4188 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4189 OUTPUT:
4190 RETVAL
4191
4192
4193MODULE = Coro::State PACKAGE = Coro::AnyEvent
4194
4195BOOT:
4196 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4197
4198void
4199_schedule (...)
4200 CODE:
4201{
4202 static int incede;
4203
4204 api_cede_notself (aTHX);
4205
4206 ++incede;
4207 while (coro_nready >= incede && api_cede (aTHX))
4208 ;
4209
4210 sv_setsv (sv_activity, &PL_sv_undef);
4211 if (coro_nready >= incede)
4212 {
4213 PUSHMARK (SP);
4214 PUTBACK;
4215 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4216 }
4217
4218 --incede;
4219}
4220
4221
4222MODULE = Coro::State PACKAGE = Coro::AIO
4223
4224void
4225_register (char *target, char *proto, SV *req)
4226 CODE:
4227{
4228 SV *req_cv = s_get_cv_croak (req);
4229 /* newXSproto doesn't return the CV on 5.8 */
4230 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4231 sv_setpv ((SV *)slf_cv, proto);
4232 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4233}
4234
4235MODULE = Coro::State PACKAGE = Coro::Select
4236
4237void
4238patch_pp_sselect ()
4239 CODE:
4240 if (!coro_old_pp_sselect)
4241 {
4242 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4243 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4244 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4245 }
4246
4247void
4248unpatch_pp_sselect ()
4249 CODE:
4250 if (coro_old_pp_sselect)
4251 {
4252 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4253 coro_old_pp_sselect = 0;
4254 }
4255

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