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Comparing Coro/Coro/State.xs (file contents):
Revision 1.223 by root, Wed Feb 13 15:46:00 2008 UTC vs.
Revision 1.410 by root, Sun Jun 12 08:14:12 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
15#include <inttypes.h> /* portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
36#endif
16 37
17#ifdef HAVE_MMAP 38#if HAVE_MMAP
18# include <unistd.h> 39# include <unistd.h>
19# include <sys/mman.h> 40# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
21# ifdef MAP_ANON 42# ifdef MAP_ANON
22# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
37# define BOOT_PAGESIZE (void)0 58# define BOOT_PAGESIZE (void)0
38#endif 59#endif
39 60
40#if CORO_USE_VALGRIND 61#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 62# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 63#endif
46 64
47/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 66static int cctx_max_idle = 4;
49
50#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
55
56#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr
59# endif
60# ifndef call_sv
61# define call_sv perl_call_sv
62# endif
63# ifndef get_sv
64# define get_sv perl_get_sv
65# endif
66# ifndef get_cv
67# define get_cv perl_get_cv
68# endif
69# ifndef IS_PADGV
70# define IS_PADGV(v) 0
71# endif
72# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0
74# endif
75#endif
76
77/* 5.8.8 */
78#ifndef GV_NOTQUAL
79# define GV_NOTQUAL 0
80#endif
81#ifndef newSV
82# define newSV(l) NEWSV(0,l)
83#endif
84
85/* 5.11 */
86#ifndef CxHASARGS
87# define CxHASARGS(cx) (cx)->blk_sub.hasargs
88#endif
89
90/* 5.8.7 */
91#ifndef SvRV_set
92# define SvRV_set(s,v) SvRV(s) = (v)
93#endif
94 67
95#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
96# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
97#endif 70#endif
98 71
… …
105# define CORO_PREFER_PERL_FUNCTIONS 0 78# define CORO_PREFER_PERL_FUNCTIONS 0
106#endif 79#endif
107 80
108/* 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
109 * portable way as possible. */ 82 * portable way as possible. */
110#define dSTACKLEVEL volatile char stacklevel
111#define STACKLEVEL ((void *)&stacklevel)
112
113#define IN_DESTRUCT (PL_main_cv == Nullcv)
114
115#if __GNUC__ >= 3 83#if __GNUC__ >= 4
116# define attribute(x) __attribute__(x) 84# define dSTACKLEVEL int stacklevel_dummy
117# define BARRIER __asm__ __volatile__ ("" : : : "memory") 85# define STACKLEVEL __builtin_frame_address (0)
118# define expect(expr,value) __builtin_expect ((expr),(value))
119#else 86#else
120# define attribute(x) 87# define dSTACKLEVEL volatile void *stacklevel
121# define BARRIER 88# define STACKLEVEL ((void *)&stacklevel)
122# define expect(expr,value) (expr)
123#endif 89#endif
124 90
125#define expect_false(expr) expect ((expr) != 0, 0) 91#define IN_DESTRUCT PL_dirty
126#define expect_true(expr) expect ((expr) != 0, 1)
127
128#define NOINLINE attribute ((noinline))
129 92
130#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
131 95
132#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
133static perl_mutex coro_mutex; 97# if CORO_PTHREAD
134# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 98static void *coro_thx;
135# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 99# endif
136#else
137# define LOCK (void)0
138# define UNLOCK (void)0
139#endif 100#endif
140 101
141/* helper storage struct for Coro::AIO */ 102/* used in state.h */
142struct io_state 103#define VAR(name,type) VARx(name, PL_ ## name, type)
143{
144 int errorno;
145 I32 laststype;
146 int laststatval;
147 Stat_t statcache;
148};
149 104
105#ifdef __linux
106# include <time.h> /* for timespec */
107# include <syscall.h> /* for SYS_* */
108# ifdef SYS_clock_gettime
109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
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;
150static size_t coro_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
151static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
152static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
153static JMPENV *main_top_env; 127static JMPENV *main_top_env;
154static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
155static volatile 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 */
156 134
157static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
158static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
159static SV *rv_diehook; 137static SV *rv_diehook;
160static SV *rv_warnhook; 138static SV *rv_warnhook;
161static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
162 140
163/* async_pool helper stuff */ 141/* async_pool helper stuff */
164static SV *sv_pool_rss; 142static SV *sv_pool_rss;
165static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
166static 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;
167 157
168static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
169static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
170 160
171enum { 161enum
162{
172 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
173 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
174 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
175 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
176 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
177 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 168 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
178}; 169};
179 170
180/* this is a structure representing a c-level coroutine */ 171/* this is a structure representing a c-level coroutine */
181typedef struct coro_cctx { 172typedef struct coro_cctx
173{
182 struct coro_cctx *next; 174 struct coro_cctx *next;
183 175
184 /* the stack */ 176 /* the stack */
185 void *sptr; 177 void *sptr;
186 size_t ssize; 178 size_t ssize;
… …
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 181 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
190 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 */
191 JMPENV *top_env; 183 JMPENV *top_env;
192 coro_context cctx; 184 coro_context cctx;
193 185
186 U32 gen;
194#if CORO_USE_VALGRIND 187#if CORO_USE_VALGRIND
195 int valgrind_id; 188 int valgrind_id;
196#endif 189#endif
197 unsigned char flags; 190 unsigned char flags;
198} coro_cctx; 191} coro_cctx;
199 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
200enum { 199enum
200{
201 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
202 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
203 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
204 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) */
205}; 207};
206 208
207/* 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 */
208typedef struct { 210typedef struct
209 SV *defsv; 211{
210 AV *defav;
211 SV *errsv;
212 SV *irsgv;
213#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
214# include "state.h" 213# include "state.h"
215#undef VAR 214#undef VARx
216} perl_slots; 215} perl_slots;
217 216
217/* how many context stack entries do we need for perl_slots */
218#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))
219 219
220/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
221struct coro { 221struct coro
222{
222 /* the c coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
223 coro_cctx *cctx; 224 coro_cctx *cctx;
224 225
225 /* process data */ 226 /* ready queue */
227 struct coro *next_ready;
228
229 /* state data */
230 struct CoroSLF slf_frame; /* saved slf frame */
226 AV *mainstack; 231 AV *mainstack;
227 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
228 233
234 CV *startcv; /* the CV to execute */
229 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
230 int refcnt; /* coroutines are refcounted, yes */
231 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
232 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
233 238
234 /* statistics */ 239 /* statistics */
235 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
236 241
237 /* coro process data */ 242 /* coro process data */
238 int prio; 243 int prio;
239 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 */
240 248
241 /* async_pool */ 249 /* async_pool */
242 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;
243 263
244 /* linked list */ 264 /* linked list */
245 struct coro *next, *prev; 265 struct coro *next, *prev;
246}; 266};
247 267
248typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
249typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
250 270
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
251/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
252 277
253#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
254#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
255#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
256#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
257#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
258#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
259 284
260/* for Coro.pm */ 285/* for Coro.pm */
261static SV *coro_current; 286static SV *coro_current;
262static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 287static SV *coro_readyhook;
263static int coro_nready; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
289static CV *cv_coro_run;
264static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 /* APPLE doesn't have HAVE_MMAP though */
297 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
298 #ifndef CORO_JIT_TYPE
299 #if __x86_64 && CORO_JIT_UNIXY
300 #define CORO_JIT_TYPE "amd64-unix"
301 #elif __i386 && CORO_JIT_UNIXY
302 #define CORO_JIT_TYPE "x86-unix"
303 #endif
304 #endif
305#endif
306
307#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
308 #undef CORO_JIT
309#endif
310
311#if CORO_JIT
312 typedef void (*load_save_perl_slots_type)(perl_slots *);
313 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
314#endif
315
316/** Coro::Select ************************************************************/
317
318static OP *(*coro_old_pp_sselect) (pTHX);
319static SV *coro_select_select;
320
321/* horrible hack, but if it works... */
322static OP *
323coro_pp_sselect (pTHX)
324{
325 dSP;
326 PUSHMARK (SP - 4); /* fake argument list */
327 XPUSHs (coro_select_select);
328 PUTBACK;
329
330 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
331 PL_op->op_flags |= OPf_STACKED;
332 PL_op->op_private = 0;
333 return PL_ppaddr [OP_ENTERSUB](aTHX);
334}
335
336/** time stuff **************************************************************/
337
338#ifdef HAS_GETTIMEOFDAY
339
340ECB_INLINE void
341coro_u2time (pTHX_ UV ret[2])
342{
343 struct timeval tv;
344 gettimeofday (&tv, 0);
345
346 ret [0] = tv.tv_sec;
347 ret [1] = tv.tv_usec;
348}
349
350ECB_INLINE double
351coro_nvtime (void)
352{
353 struct timeval tv;
354 gettimeofday (&tv, 0);
355
356 return tv.tv_sec + tv.tv_usec * 1e-6;
357}
358
359ECB_INLINE void
360time_init (pTHX)
361{
362 nvtime = coro_nvtime;
363 u2time = coro_u2time;
364}
365
366#else
367
368ECB_INLINE void
369time_init (pTHX)
370{
371 SV **svp;
372
373 require_pv ("Time/HiRes.pm");
374
375 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
376
377 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
378 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
379
380 nvtime = INT2PTR (double (*)(), SvIV (*svp));
381
382 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
383 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
384}
385
386#endif
265 387
266/** lowlevel stuff **********************************************************/ 388/** lowlevel stuff **********************************************************/
267 389
268static SV * 390static SV * ecb_noinline
269coro_get_sv (pTHX_ const char *name, int create) 391coro_get_sv (pTHX_ const char *name, int create)
270{ 392{
271#if PERL_VERSION_ATLEAST (5,9,0) 393#if PERL_VERSION_ATLEAST (5,10,0)
272 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 394 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
273 get_sv (name, create); 395 get_sv (name, create);
274#endif 396#endif
275 return get_sv (name, create); 397 return get_sv (name, create);
276} 398}
277 399
278static AV * 400static AV * ecb_noinline
279coro_get_av (pTHX_ const char *name, int create) 401coro_get_av (pTHX_ const char *name, int create)
280{ 402{
281#if PERL_VERSION_ATLEAST (5,9,0) 403#if PERL_VERSION_ATLEAST (5,10,0)
282 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 404 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
283 get_av (name, create); 405 get_av (name, create);
284#endif 406#endif
285 return get_av (name, create); 407 return get_av (name, create);
286} 408}
287 409
288static HV * 410static HV * ecb_noinline
289coro_get_hv (pTHX_ const char *name, int create) 411coro_get_hv (pTHX_ const char *name, int create)
290{ 412{
291#if PERL_VERSION_ATLEAST (5,9,0) 413#if PERL_VERSION_ATLEAST (5,10,0)
292 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 414 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
293 get_hv (name, create); 415 get_hv (name, create);
294#endif 416#endif
295 return get_hv (name, create); 417 return get_hv (name, create);
296} 418}
297 419
298static AV * 420ECB_INLINE void
421coro_times_update (void)
422{
423#ifdef coro_clock_gettime
424 struct timespec ts;
425
426 ts.tv_sec = ts.tv_nsec = 0;
427 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
428 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
429
430 ts.tv_sec = ts.tv_nsec = 0;
431 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
432 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
433#else
434 dTHX;
435 UV tv[2];
436
437 u2time (aTHX_ tv);
438 time_real [0] = tv [0];
439 time_real [1] = tv [1] * 1000;
440#endif
441}
442
443ECB_INLINE void
444coro_times_add (struct coro *c)
445{
446 c->t_real [1] += time_real [1];
447 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
448 c->t_real [0] += time_real [0];
449
450 c->t_cpu [1] += time_cpu [1];
451 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
452 c->t_cpu [0] += time_cpu [0];
453}
454
455ECB_INLINE void
456coro_times_sub (struct coro *c)
457{
458 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
459 c->t_real [1] -= time_real [1];
460 c->t_real [0] -= time_real [0];
461
462 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
463 c->t_cpu [1] -= time_cpu [1];
464 c->t_cpu [0] -= time_cpu [0];
465}
466
467/*****************************************************************************/
468/* magic glue */
469
470#define CORO_MAGIC_type_cv 26
471#define CORO_MAGIC_type_state PERL_MAGIC_ext
472
473#define CORO_MAGIC_NN(sv, type) \
474 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
475 ? SvMAGIC (sv) \
476 : mg_find (sv, type))
477
478#define CORO_MAGIC(sv, type) \
479 (ecb_expect_true (SvMAGIC (sv)) \
480 ? CORO_MAGIC_NN (sv, type) \
481 : 0)
482
483#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
484#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
485
486ECB_INLINE MAGIC *
487SvSTATEhv_p (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (ecb_expect_true (
492 SvTYPE (coro) == SVt_PVHV
493 && (mg = CORO_MAGIC_state (coro))
494 && mg->mg_virtual == &coro_state_vtbl
495 ))
496 return mg;
497
498 return 0;
499}
500
501ECB_INLINE struct coro *
502SvSTATE_ (pTHX_ SV *coro)
503{
504 MAGIC *mg;
505
506 if (SvROK (coro))
507 coro = SvRV (coro);
508
509 mg = SvSTATEhv_p (aTHX_ coro);
510 if (!mg)
511 croak ("Coro::State object required");
512
513 return (struct coro *)mg->mg_ptr;
514}
515
516#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
517
518/* faster than SvSTATE, but expects a coroutine hv */
519#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
520#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
521
522/*****************************************************************************/
523/* padlist management and caching */
524
525ECB_INLINE AV *
299coro_clone_padlist (pTHX_ CV *cv) 526coro_derive_padlist (pTHX_ CV *cv)
300{ 527{
301 AV *padlist = CvPADLIST (cv); 528 AV *padlist = CvPADLIST (cv);
302 AV *newpadlist, *newpad; 529 AV *newpadlist, *newpad;
303 530
304 newpadlist = newAV (); 531 newpadlist = newAV ();
305 AvREAL_off (newpadlist); 532 AvREAL_off (newpadlist);
306#if PERL_VERSION_ATLEAST (5,9,0) 533#if PERL_VERSION_ATLEAST (5,10,0)
307 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 534 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
308#else 535#else
309 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 536 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
310#endif 537#endif
311 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 538 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
312 --AvFILLp (padlist); 539 --AvFILLp (padlist);
313 540
314 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 541 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
315 av_store (newpadlist, 1, (SV *)newpad); 542 av_store (newpadlist, 1, (SV *)newpad);
316 543
317 return newpadlist; 544 return newpadlist;
318} 545}
319 546
320static void 547ECB_INLINE void
321free_padlist (pTHX_ AV *padlist) 548free_padlist (pTHX_ AV *padlist)
322{ 549{
323 /* may be during global destruction */ 550 /* may be during global destruction */
324 if (SvREFCNT (padlist)) 551 if (!IN_DESTRUCT)
325 { 552 {
326 I32 i = AvFILLp (padlist); 553 I32 i = AvFILLp (padlist);
327 while (i >= 0) 554
555 while (i > 0) /* special-case index 0 */
328 { 556 {
329 SV **svp = av_fetch (padlist, i--, FALSE); 557 /* we try to be extra-careful here */
330 if (svp) 558 AV *av = (AV *)AvARRAY (padlist)[i--];
331 { 559 I32 j = AvFILLp (av);
332 SV *sv; 560
333 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 561 while (j >= 0)
562 SvREFCNT_dec (AvARRAY (av)[j--]);
563
564 AvFILLp (av) = -1;
334 SvREFCNT_dec (sv); 565 SvREFCNT_dec (av);
335
336 SvREFCNT_dec (*svp);
337 }
338 } 566 }
339 567
568 SvREFCNT_dec (AvARRAY (padlist)[0]);
569
570 AvFILLp (padlist) = -1;
340 SvREFCNT_dec ((SV*)padlist); 571 SvREFCNT_dec ((SV*)padlist);
341 } 572 }
342} 573}
343 574
344static int 575static int
345coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 576coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
346{ 577{
347 AV *padlist; 578 AV *padlist;
348 AV *av = (AV *)mg->mg_obj; 579 AV *av = (AV *)mg->mg_obj;
580
581 /* perl manages to free our internal AV and _then_ call us */
582 if (IN_DESTRUCT)
583 return 0;
349 584
350 /* casting is fun. */ 585 /* casting is fun. */
351 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 586 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
352 free_padlist (aTHX_ padlist); 587 free_padlist (aTHX_ padlist);
353 588
589 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
590
354 return 0; 591 return 0;
355} 592}
356
357#define CORO_MAGIC_type_cv PERL_MAGIC_ext
358#define CORO_MAGIC_type_state PERL_MAGIC_ext
359 593
360static MGVTBL coro_cv_vtbl = { 594static MGVTBL coro_cv_vtbl = {
361 0, 0, 0, 0, 595 0, 0, 0, 0,
362 coro_cv_free 596 coro_cv_free
363}; 597};
364 598
365#define CORO_MAGIC(sv,type) \
366 SvMAGIC (sv) \
367 ? SvMAGIC (sv)->mg_type == type \
368 ? SvMAGIC (sv) \
369 : mg_find (sv, type) \
370 : 0
371
372#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
373#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
374
375static struct coro *
376SvSTATE_ (pTHX_ SV *coro)
377{
378 HV *stash;
379 MAGIC *mg;
380
381 if (SvROK (coro))
382 coro = SvRV (coro);
383
384 if (expect_false (SvTYPE (coro) != SVt_PVHV))
385 croak ("Coro::State object required");
386
387 stash = SvSTASH (coro);
388 if (expect_false (stash != coro_stash && stash != coro_state_stash))
389 {
390 /* very slow, but rare, check */
391 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
392 croak ("Coro::State object required");
393 }
394
395 mg = CORO_MAGIC_state (coro);
396 return (struct coro *)mg->mg_ptr;
397}
398
399#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
400
401/* the next two functions merely cache the padlists */ 599/* the next two functions merely cache the padlists */
402static void 600ECB_INLINE void
403get_padlist (pTHX_ CV *cv) 601get_padlist (pTHX_ CV *cv)
404{ 602{
405 MAGIC *mg = CORO_MAGIC_cv (cv); 603 MAGIC *mg = CORO_MAGIC_cv (cv);
406 AV *av; 604 AV *av;
407 605
408 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 606 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
409 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 607 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
410 else 608 else
411 { 609 {
412#if CORO_PREFER_PERL_FUNCTIONS 610#if CORO_PREFER_PERL_FUNCTIONS
413 /* this is probably cleaner, but also slower? */ 611 /* this is probably cleaner? but also slower! */
612 /* in practise, it seems to be less stable */
414 CV *cp = Perl_cv_clone (cv); 613 CV *cp = Perl_cv_clone (aTHX_ cv);
415 CvPADLIST (cv) = CvPADLIST (cp); 614 CvPADLIST (cv) = CvPADLIST (cp);
416 CvPADLIST (cp) = 0; 615 CvPADLIST (cp) = 0;
417 SvREFCNT_dec (cp); 616 SvREFCNT_dec (cp);
418#else 617#else
419 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 618 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
420#endif 619#endif
421 } 620 }
422} 621}
423 622
424static void 623ECB_INLINE void
425put_padlist (pTHX_ CV *cv) 624put_padlist (pTHX_ CV *cv)
426{ 625{
427 MAGIC *mg = CORO_MAGIC_cv (cv); 626 MAGIC *mg = CORO_MAGIC_cv (cv);
428 AV *av; 627 AV *av;
429 628
430 if (expect_false (!mg)) 629 if (ecb_expect_false (!mg))
431 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 630 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
432 631
433 av = (AV *)mg->mg_obj; 632 av = (AV *)mg->mg_obj;
434 633
435 if (expect_false (AvFILLp (av) >= AvMAX (av))) 634 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
436 av_extend (av, AvMAX (av) + 1); 635 av_extend (av, AvFILLp (av) + 1);
437 636
438 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 637 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
439} 638}
440 639
441/** load & save, init *******************************************************/ 640/** load & save, init *******************************************************/
641
642/* swap sv heads, at least logically */
643static void
644swap_svs (pTHX_ Coro__State c)
645{
646 int i;
647
648 for (i = 0; i <= AvFILLp (c->swap_sv); )
649 {
650 SV *a = AvARRAY (c->swap_sv)[i++];
651 SV *b = AvARRAY (c->swap_sv)[i++];
652
653 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
654 SV tmp;
655
656 /* swap sv_any */
657 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
658
659 /* swap sv_flags */
660 SvFLAGS (&tmp) = SvFLAGS (a);
661 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
662 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
663
664#if PERL_VERSION_ATLEAST (5,10,0)
665 /* perl 5.10 complicates this _quite_ a bit, but it also is
666 * much faster, so no quarrels here. alternatively, we could
667 * sv_upgrade to avoid this.
668 */
669 {
670 /* swap sv_u */
671 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
672
673 /* if SvANY points to the head, we need to adjust the pointers,
674 * as the pointer for a still points to b, and maybe vice versa.
675 */
676 #define svany_in_head(type) \
677 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
678
679 if (svany_in_head (SvTYPE (a)))
680 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
681
682 if (svany_in_head (SvTYPE (b)))
683 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
684 }
685#endif
686 }
687}
688
689#define SWAP_SVS(coro) \
690 if (ecb_expect_false ((coro)->swap_sv)) \
691 swap_svs (aTHX_ (coro))
692
693static void
694on_enterleave_call (pTHX_ SV *cb);
442 695
443static void 696static void
444load_perl (pTHX_ Coro__State c) 697load_perl (pTHX_ Coro__State c)
445{ 698{
446 perl_slots *slot = c->slot; 699 perl_slots *slot = c->slot;
447 c->slot = 0; 700 c->slot = 0;
448 701
449 PL_mainstack = c->mainstack; 702 PL_mainstack = c->mainstack;
450 703
451 GvSV (PL_defgv) = slot->defsv; 704#if CORO_JIT
452 GvAV (PL_defgv) = slot->defav; 705 load_perl_slots (slot);
453 GvSV (PL_errgv) = slot->errsv; 706#else
454 GvSV (irsgv) = slot->irsgv;
455
456 #define VAR(name,type) PL_ ## name = slot->name; 707 #define VARx(name,expr,type) expr = slot->name;
457 # include "state.h" 708 # include "state.h"
458 #undef VAR 709 #undef VARx
710#endif
459 711
460 { 712 {
461 dSP; 713 dSP;
462 714
463 CV *cv; 715 CV *cv;
464 716
465 /* now do the ugly restore mess */ 717 /* now do the ugly restore mess */
466 while (expect_true (cv = (CV *)POPs)) 718 while (ecb_expect_true (cv = (CV *)POPs))
467 { 719 {
468 put_padlist (aTHX_ cv); /* mark this padlist as available */ 720 put_padlist (aTHX_ cv); /* mark this padlist as available */
469 CvDEPTH (cv) = PTR2IV (POPs); 721 CvDEPTH (cv) = PTR2IV (POPs);
470 CvPADLIST (cv) = (AV *)POPs; 722 CvPADLIST (cv) = (AV *)POPs;
471 } 723 }
472 724
473 PUTBACK; 725 PUTBACK;
474 } 726 }
727
728 slf_frame = c->slf_frame;
729 CORO_THROW = c->except;
730
731 if (ecb_expect_false (enable_times))
732 {
733 if (ecb_expect_false (!times_valid))
734 coro_times_update ();
735
736 coro_times_sub (c);
737 }
738
739 if (ecb_expect_false (c->on_enter))
740 {
741 int i;
742
743 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
744 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
745 }
746
747 SWAP_SVS (c);
475} 748}
476 749
477static void 750static void
478save_perl (pTHX_ Coro__State c) 751save_perl (pTHX_ Coro__State c)
479{ 752{
753 SWAP_SVS (c);
754
755 if (ecb_expect_false (c->on_leave))
756 {
757 int i;
758
759 for (i = AvFILLp (c->on_leave); i >= 0; --i)
760 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
761 }
762
763 times_valid = 0;
764
765 if (ecb_expect_false (enable_times))
766 {
767 coro_times_update (); times_valid = 1;
768 coro_times_add (c);
769 }
770
771 c->except = CORO_THROW;
772 c->slf_frame = slf_frame;
773
480 { 774 {
481 dSP; 775 dSP;
482 I32 cxix = cxstack_ix; 776 I32 cxix = cxstack_ix;
483 PERL_CONTEXT *ccstk = cxstack; 777 PERL_CONTEXT *ccstk = cxstack;
484 PERL_SI *top_si = PL_curstackinfo; 778 PERL_SI *top_si = PL_curstackinfo;
… …
490 784
491 XPUSHs (Nullsv); 785 XPUSHs (Nullsv);
492 /* this loop was inspired by pp_caller */ 786 /* this loop was inspired by pp_caller */
493 for (;;) 787 for (;;)
494 { 788 {
495 while (expect_true (cxix >= 0)) 789 while (ecb_expect_true (cxix >= 0))
496 { 790 {
497 PERL_CONTEXT *cx = &ccstk[cxix--]; 791 PERL_CONTEXT *cx = &ccstk[cxix--];
498 792
499 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 793 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
500 { 794 {
501 CV *cv = cx->blk_sub.cv; 795 CV *cv = cx->blk_sub.cv;
502 796
503 if (expect_true (CvDEPTH (cv))) 797 if (ecb_expect_true (CvDEPTH (cv)))
504 { 798 {
505 EXTEND (SP, 3); 799 EXTEND (SP, 3);
506 PUSHs ((SV *)CvPADLIST (cv)); 800 PUSHs ((SV *)CvPADLIST (cv));
507 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 801 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508 PUSHs ((SV *)cv); 802 PUSHs ((SV *)cv);
509 803
510 CvDEPTH (cv) = 0; 804 CvDEPTH (cv) = 0;
511 get_padlist (aTHX_ cv); 805 get_padlist (aTHX_ cv);
512 } 806 }
513 } 807 }
514 } 808 }
515 809
516 if (expect_true (top_si->si_type == PERLSI_MAIN)) 810 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
517 break; 811 break;
518 812
519 top_si = top_si->si_prev; 813 top_si = top_si->si_prev;
520 ccstk = top_si->si_cxstack; 814 ccstk = top_si->si_cxstack;
521 cxix = top_si->si_cxix; 815 cxix = top_si->si_cxix;
… …
523 817
524 PUTBACK; 818 PUTBACK;
525 } 819 }
526 820
527 /* allocate some space on the context stack for our purposes */ 821 /* allocate some space on the context stack for our purposes */
528 /* we manually unroll here, as usually 2 slots is enough */ 822 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 { 823 {
533 int i; 824 unsigned int i;
825
534 for (i = 3; i < SLOT_COUNT; ++i) 826 for (i = 0; i < SLOT_COUNT; ++i)
535 CXINC; 827 CXINC;
536 } 828
537 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 829 cxstack_ix -= SLOT_COUNT; /* undo allocation */
830 }
538 831
539 c->mainstack = PL_mainstack; 832 c->mainstack = PL_mainstack;
540 833
541 { 834 {
542 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 835 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
543 836
544 slot->defav = GvAV (PL_defgv); 837#if CORO_JIT
545 slot->defsv = DEFSV; 838 save_perl_slots (slot);
546 slot->errsv = ERRSV; 839#else
547 slot->irsgv = GvSV (irsgv);
548
549 #define VAR(name,type) slot->name = PL_ ## name; 840 #define VARx(name,expr,type) slot->name = expr;
550 # include "state.h" 841 # include "state.h"
551 #undef VAR 842 #undef VARx
843#endif
552 } 844 }
553} 845}
554 846
555/* 847/*
556 * allocate various perl stacks. This is an exact copy 848 * allocate various perl stacks. This is almost an exact copy
557 * of perl.c:init_stacks, except that it uses less memory 849 * of perl.c:init_stacks, except that it uses less memory
558 * on the (sometimes correct) assumption that coroutines do 850 * on the (sometimes correct) assumption that coroutines do
559 * not usually need a lot of stackspace. 851 * not usually need a lot of stackspace.
560 */ 852 */
561#if CORO_PREFER_PERL_FUNCTIONS 853#if CORO_PREFER_PERL_FUNCTIONS
562# define coro_init_stacks init_stacks 854# define coro_init_stacks(thx) init_stacks ()
563#else 855#else
564static void 856static void
565coro_init_stacks (pTHX) 857coro_init_stacks (pTHX)
566{ 858{
567 PL_curstackinfo = new_stackinfo(32, 8); 859 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; 860 PL_curstackinfo->si_type = PERLSI_MAIN;
569 PL_curstack = PL_curstackinfo->si_stack; 861 PL_curstack = PL_curstackinfo->si_stack;
570 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 862 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
571 863
572 PL_stack_base = AvARRAY(PL_curstack); 864 PL_stack_base = AvARRAY(PL_curstack);
… …
592 884
593 New(54,PL_savestack,24,ANY); 885 New(54,PL_savestack,24,ANY);
594 PL_savestack_ix = 0; 886 PL_savestack_ix = 0;
595 PL_savestack_max = 24; 887 PL_savestack_max = 24;
596 888
597#if !PERL_VERSION_ATLEAST (5,9,0) 889#if !PERL_VERSION_ATLEAST (5,10,0)
598 New(54,PL_retstack,4,OP*); 890 New(54,PL_retstack,4,OP*);
599 PL_retstack_ix = 0; 891 PL_retstack_ix = 0;
600 PL_retstack_max = 4; 892 PL_retstack_max = 4;
601#endif 893#endif
602} 894}
… …
604 896
605/* 897/*
606 * destroy the stacks, the callchain etc... 898 * destroy the stacks, the callchain etc...
607 */ 899 */
608static void 900static void
609coro_destroy_stacks (pTHX) 901coro_destruct_stacks (pTHX)
610{ 902{
611 while (PL_curstackinfo->si_next) 903 while (PL_curstackinfo->si_next)
612 PL_curstackinfo = PL_curstackinfo->si_next; 904 PL_curstackinfo = PL_curstackinfo->si_next;
613 905
614 while (PL_curstackinfo) 906 while (PL_curstackinfo)
… …
625 917
626 Safefree (PL_tmps_stack); 918 Safefree (PL_tmps_stack);
627 Safefree (PL_markstack); 919 Safefree (PL_markstack);
628 Safefree (PL_scopestack); 920 Safefree (PL_scopestack);
629 Safefree (PL_savestack); 921 Safefree (PL_savestack);
630#if !PERL_VERSION_ATLEAST (5,9,0) 922#if !PERL_VERSION_ATLEAST (5,10,0)
631 Safefree (PL_retstack); 923 Safefree (PL_retstack);
632#endif 924#endif
633} 925}
634 926
927#define CORO_RSS \
928 rss += sizeof (SYM (curstackinfo)); \
929 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
930 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
931 rss += SYM (tmps_max) * sizeof (SV *); \
932 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
933 rss += SYM (scopestack_max) * sizeof (I32); \
934 rss += SYM (savestack_max) * sizeof (ANY);
935
635static size_t 936static size_t
636coro_rss (pTHX_ struct coro *coro) 937coro_rss (pTHX_ struct coro *coro)
637{ 938{
638 size_t rss = sizeof (*coro); 939 size_t rss = sizeof (*coro);
639 940
640 if (coro->mainstack) 941 if (coro->mainstack)
641 { 942 {
642 perl_slots tmp_slot;
643 perl_slots *slot;
644
645 if (coro->flags & CF_RUNNING) 943 if (coro->flags & CF_RUNNING)
646 { 944 {
647 slot = &tmp_slot; 945 #define SYM(sym) PL_ ## sym
648 946 CORO_RSS;
649 #define VAR(name,type) slot->name = PL_ ## name;
650 # include "state.h"
651 #undef VAR 947 #undef SYM
652 } 948 }
653 else 949 else
654 slot = coro->slot; 950 {
655 951 #define SYM(sym) coro->slot->sym
656 rss += sizeof (slot->curstackinfo); 952 CORO_RSS;
657 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 953 #undef SYM
658 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 954 }
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
664#if !PERL_VERSION_ATLEAST (5,9,0)
665 rss += slot->retstack_max * sizeof (OP *);
666#endif
667 } 955 }
668 956
669 return rss; 957 return rss;
670} 958}
671 959
672/** coroutine stack handling ************************************************/ 960/** coroutine stack handling ************************************************/
673 961
674static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 962static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
675static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); 963static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
964static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
965
966/* apparently < 5.8.8 */
967#ifndef MgPV_nolen_const
968#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
969 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
970 (const char*)(mg)->mg_ptr)
971#endif
676 972
677/* 973/*
678 * This overrides the default magic get method of %SIG elements. 974 * This overrides the default magic get method of %SIG elements.
679 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 975 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
680 * and instead of tryign to save and restore the hash elements, we just provide 976 * and instead of trying to save and restore the hash elements (extremely slow),
681 * readback here. 977 * we just provide our own readback here.
682 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
683 * not expecting this to actually change the hook. This is a potential problem
684 * when a schedule happens then, but we ignore this.
685 */ 978 */
686static int 979static int ecb_cold
687coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 980coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
688{ 981{
689 const char *s = MgPV_nolen_const (mg); 982 const char *s = MgPV_nolen_const (mg);
690 983
691 if (*s == '_') 984 if (*s == '_')
692 { 985 {
693 if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0; 986 SV **svp = 0;
694 if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 0; 987
988 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
989 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
990
991 if (svp)
992 {
993 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
994 return 0;
995 }
695 } 996 }
696 997
697 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 998 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
698} 999}
699 1000
700static int 1001static int ecb_cold
701coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1002coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
702{ 1003{
703 const char *s = MgPV_nolen_const (mg); 1004 const char *s = MgPV_nolen_const (mg);
704 1005
705 if (*s == '_') 1006 if (*s == '_')
706 { 1007 {
… …
710 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1011 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
711 1012
712 if (svp) 1013 if (svp)
713 { 1014 {
714 SV *old = *svp; 1015 SV *old = *svp;
715 *svp = newSVsv (sv); 1016 *svp = 0;
716 SvREFCNT_dec (old); 1017 SvREFCNT_dec (old);
717 return; 1018 return 0;
718 } 1019 }
719 } 1020 }
720 1021
1022 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1023}
1024
1025static int ecb_cold
1026coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1027{
1028 const char *s = MgPV_nolen_const (mg);
1029
1030 if (*s == '_')
1031 {
1032 SV **svp = 0;
1033
1034 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1035 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1036
1037 if (svp)
1038 {
1039 SV *old = *svp;
1040 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1041 SvREFCNT_dec (old);
1042 return 0;
1043 }
1044 }
1045
721 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1046 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
722} 1047}
723 1048
724static void 1049static void
1050prepare_nop (pTHX_ struct coro_transfer_args *ta)
1051{
1052 /* kind of mega-hacky, but works */
1053 ta->next = ta->prev = (struct coro *)ta;
1054}
1055
1056static int
1057slf_check_nop (pTHX_ struct CoroSLF *frame)
1058{
1059 return 0;
1060}
1061
1062static int
1063slf_check_repeat (pTHX_ struct CoroSLF *frame)
1064{
1065 return 1;
1066}
1067
1068static UNOP init_perl_op;
1069
1070ecb_noinline static void /* noinline to keep it out of the transfer fast path */
725coro_setup (pTHX_ struct coro *coro) 1071init_perl (pTHX_ struct coro *coro)
726{ 1072{
727 /* 1073 /*
728 * emulate part of the perl startup here. 1074 * emulate part of the perl startup here.
729 */ 1075 */
730 coro_init_stacks (aTHX); 1076 coro_init_stacks (aTHX);
731 1077
732 PL_runops = RUNOPS_DEFAULT; 1078 PL_runops = RUNOPS_DEFAULT;
733 PL_curcop = &PL_compiling; 1079 PL_curcop = &PL_compiling;
734 PL_in_eval = EVAL_NULL; 1080 PL_in_eval = EVAL_NULL;
735 PL_comppad = 0; 1081 PL_comppad = 0;
1082 PL_comppad_name = 0;
1083 PL_comppad_name_fill = 0;
1084 PL_comppad_name_floor = 0;
736 PL_curpm = 0; 1085 PL_curpm = 0;
737 PL_curpad = 0; 1086 PL_curpad = 0;
738 PL_localizing = 0; 1087 PL_localizing = 0;
739 PL_dirty = 0;
740 PL_restartop = 0; 1088 PL_restartop = 0;
1089#if PERL_VERSION_ATLEAST (5,10,0)
1090 PL_parser = 0;
1091#endif
1092 PL_hints = 0;
741 1093
742 /* recreate the die/warn hooks */ 1094 /* recreate the die/warn hooks */
743 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1095 PL_diehook = SvREFCNT_inc (rv_diehook);
744 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1096 PL_warnhook = SvREFCNT_inc (rv_warnhook);
745 1097
746 GvSV (PL_defgv) = newSV (0); 1098 GvSV (PL_defgv) = newSV (0);
747 GvAV (PL_defgv) = coro->args; coro->args = 0; 1099 GvAV (PL_defgv) = coro->args; coro->args = 0;
748 GvSV (PL_errgv) = newSV (0); 1100 GvSV (PL_errgv) = newSV (0);
749 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1101 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1102 GvHV (PL_hintgv) = 0;
750 PL_rs = newSVsv (GvSV (irsgv)); 1103 PL_rs = newSVsv (GvSV (irsgv));
751 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 1104 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
752 1105
753 { 1106 {
754 dSP; 1107 dSP;
755 LOGOP myop; 1108 UNOP myop;
756 1109
757 Zero (&myop, 1, LOGOP); 1110 Zero (&myop, 1, UNOP);
758 myop.op_next = Nullop; 1111 myop.op_next = Nullop;
1112 myop.op_type = OP_ENTERSUB;
759 myop.op_flags = OPf_WANT_VOID; 1113 myop.op_flags = OPf_WANT_VOID;
760 1114
761 PUSHMARK (SP); 1115 PUSHMARK (SP);
762 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1116 PUSHs ((SV *)coro->startcv);
763 PUTBACK; 1117 PUTBACK;
764 PL_op = (OP *)&myop; 1118 PL_op = (OP *)&myop;
765 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1119 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
766 SPAGAIN;
767 } 1120 }
768 1121
769 /* this newly created coroutine might be run on an existing cctx which most 1122 /* this newly created coroutine might be run on an existing cctx which most
770 * likely was suspended in set_stacklevel, called from entersub. 1123 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
771 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
772 * so we ENTER here for symmetry
773 */ 1124 */
774 ENTER; 1125 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
775} 1126 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1127 slf_frame.destroy = 0;
776 1128
1129 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1130 init_perl_op.op_next = PL_op;
1131 init_perl_op.op_type = OP_ENTERSUB;
1132 init_perl_op.op_ppaddr = pp_slf;
1133 /* no flags etc. required, as an init function won't be called */
1134
1135 PL_op = (OP *)&init_perl_op;
1136
1137 /* copy throw, in case it was set before init_perl */
1138 CORO_THROW = coro->except;
1139
1140 SWAP_SVS (coro);
1141
1142 if (ecb_expect_false (enable_times))
1143 {
1144 coro_times_update ();
1145 coro_times_sub (coro);
1146 }
1147}
1148
777static void 1149static void
778coro_destroy (pTHX_ struct coro *coro) 1150coro_unwind_stacks (pTHX)
779{ 1151{
780 if (!IN_DESTRUCT) 1152 if (!IN_DESTRUCT)
781 { 1153 {
782 /* restore all saved variables and stuff */ 1154 /* restore all saved variables and stuff */
783 LEAVE_SCOPE (0); 1155 LEAVE_SCOPE (0);
… …
791 POPSTACK_TO (PL_mainstack); 1163 POPSTACK_TO (PL_mainstack);
792 1164
793 /* unwind main stack */ 1165 /* unwind main stack */
794 dounwind (-1); 1166 dounwind (-1);
795 } 1167 }
1168}
796 1169
797 SvREFCNT_dec (GvSV (PL_defgv)); 1170static void
798 SvREFCNT_dec (GvAV (PL_defgv)); 1171destroy_perl (pTHX_ struct coro *coro)
799 SvREFCNT_dec (GvSV (PL_errgv)); 1172{
800 SvREFCNT_dec (PL_defoutgv); 1173 SV *svf [9];
801 SvREFCNT_dec (PL_rs);
802 SvREFCNT_dec (GvSV (irsgv));
803 1174
804 SvREFCNT_dec (PL_diehook);
805 SvREFCNT_dec (PL_warnhook);
806 1175 {
1176 SV *old_current = SvRV (coro_current);
1177 struct coro *current = SvSTATE (old_current);
1178
1179 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1180
1181 save_perl (aTHX_ current);
1182
1183 /* this will cause transfer_check to croak on block*/
1184 SvRV_set (coro_current, (SV *)coro->hv);
1185
1186 load_perl (aTHX_ coro);
1187
1188 coro_unwind_stacks (aTHX);
1189
1190 /* restore swapped sv's */
1191 SWAP_SVS (coro);
1192
1193 coro_destruct_stacks (aTHX);
1194
1195 /* now save some sv's to be free'd later */
1196 svf [0] = GvSV (PL_defgv);
1197 svf [1] = (SV *)GvAV (PL_defgv);
1198 svf [2] = GvSV (PL_errgv);
1199 svf [3] = (SV *)PL_defoutgv;
1200 svf [4] = PL_rs;
1201 svf [5] = GvSV (irsgv);
1202 svf [6] = (SV *)GvHV (PL_hintgv);
1203 svf [7] = PL_diehook;
1204 svf [8] = PL_warnhook;
1205 assert (9 == sizeof (svf) / sizeof (*svf));
1206
1207 SvRV_set (coro_current, old_current);
1208
1209 load_perl (aTHX_ current);
1210 }
1211
1212 {
1213 unsigned int i;
1214
1215 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1216 SvREFCNT_dec (svf [i]);
1217
807 SvREFCNT_dec (coro->saved_deffh); 1218 SvREFCNT_dec (coro->saved_deffh);
808 SvREFCNT_dec (coro->throw); 1219 SvREFCNT_dec (coro->rouse_cb);
809 1220 SvREFCNT_dec (coro->invoke_cb);
810 coro_destroy_stacks (aTHX); 1221 SvREFCNT_dec (coro->invoke_av);
1222 }
811} 1223}
812 1224
813static void 1225ECB_INLINE void
814free_coro_mortal (pTHX) 1226free_coro_mortal (pTHX)
815{ 1227{
816 if (expect_true (coro_mortal)) 1228 if (ecb_expect_true (coro_mortal))
817 { 1229 {
818 SvREFCNT_dec (coro_mortal); 1230 SvREFCNT_dec ((SV *)coro_mortal);
819 coro_mortal = 0; 1231 coro_mortal = 0;
820 } 1232 }
821} 1233}
822 1234
823static int 1235static int
824runops_trace (pTHX) 1236runops_trace (pTHX)
825{ 1237{
826 COP *oldcop = 0; 1238 COP *oldcop = 0;
827 int oldcxix = -2; 1239 int oldcxix = -2;
828 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
829 coro_cctx *cctx = coro->cctx;
830 1240
831 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1241 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
832 { 1242 {
833 PERL_ASYNC_CHECK (); 1243 PERL_ASYNC_CHECK ();
834 1244
835 if (cctx->flags & CC_TRACE_ALL) 1245 if (cctx_current->flags & CC_TRACE_ALL)
836 { 1246 {
837 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1247 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
838 { 1248 {
839 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1249 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
840 SV **bot, **top; 1250 SV **bot, **top;
841 AV *av = newAV (); /* return values */ 1251 AV *av = newAV (); /* return values */
842 SV **cb; 1252 SV **cb;
… …
852 : cx->blk_gimme == G_SCALAR ? bot + 1 1262 : cx->blk_gimme == G_SCALAR ? bot + 1
853 : bot; 1263 : bot;
854 1264
855 av_extend (av, top - bot); 1265 av_extend (av, top - bot);
856 while (bot < top) 1266 while (bot < top)
857 av_push (av, SvREFCNT_inc (*bot++)); 1267 av_push (av, SvREFCNT_inc_NN (*bot++));
858 1268
859 PL_runops = RUNOPS_DEFAULT; 1269 PL_runops = RUNOPS_DEFAULT;
860 ENTER; 1270 ENTER;
861 SAVETMPS; 1271 SAVETMPS;
862 EXTEND (SP, 3); 1272 EXTEND (SP, 3);
… …
879 1289
880 if (PL_curcop != &PL_compiling) 1290 if (PL_curcop != &PL_compiling)
881 { 1291 {
882 SV **cb; 1292 SV **cb;
883 1293
884 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1294 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
885 { 1295 {
886 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1296 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
887 1297
888 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1298 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
889 { 1299 {
890 runops_proc_t old_runops = PL_runops;
891 dSP; 1300 dSP;
892 GV *gv = CvGV (cx->blk_sub.cv); 1301 GV *gv = CvGV (cx->blk_sub.cv);
893 SV *fullname = sv_2mortal (newSV (0)); 1302 SV *fullname = sv_2mortal (newSV (0));
894 1303
895 if (isGV (gv)) 1304 if (isGV (gv))
… …
900 SAVETMPS; 1309 SAVETMPS;
901 EXTEND (SP, 3); 1310 EXTEND (SP, 3);
902 PUSHMARK (SP); 1311 PUSHMARK (SP);
903 PUSHs (&PL_sv_yes); 1312 PUSHs (&PL_sv_yes);
904 PUSHs (fullname); 1313 PUSHs (fullname);
905 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1314 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
906 PUTBACK; 1315 PUTBACK;
907 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1316 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
908 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1317 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
909 SPAGAIN; 1318 SPAGAIN;
910 FREETMPS; 1319 FREETMPS;
… …
913 } 1322 }
914 1323
915 oldcxix = cxstack_ix; 1324 oldcxix = cxstack_ix;
916 } 1325 }
917 1326
918 if (cctx->flags & CC_TRACE_LINE) 1327 if (cctx_current->flags & CC_TRACE_LINE)
919 { 1328 {
920 dSP; 1329 dSP;
921 1330
922 PL_runops = RUNOPS_DEFAULT; 1331 PL_runops = RUNOPS_DEFAULT;
923 ENTER; 1332 ENTER;
… …
942 1351
943 TAINT_NOT; 1352 TAINT_NOT;
944 return 0; 1353 return 0;
945} 1354}
946 1355
947/* inject a fake call to Coro::State::_cctx_init into the execution */ 1356static struct CoroSLF cctx_ssl_frame;
948/* _cctx_init should be careful, as it could be called at almost any time */
949/* during execution of a perl program */
950static void NOINLINE
951cctx_prepare (pTHX_ coro_cctx *cctx)
952{
953 dSP;
954 LOGOP myop;
955 1357
1358static void
1359slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1360{
1361 ta->prev = 0;
1362}
1363
1364static int
1365slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1366{
1367 *frame = cctx_ssl_frame;
1368
1369 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1370}
1371
1372/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1373static void ecb_noinline
1374cctx_prepare (pTHX)
1375{
956 PL_top_env = &PL_start_env; 1376 PL_top_env = &PL_start_env;
957 1377
958 if (cctx->flags & CC_TRACE) 1378 if (cctx_current->flags & CC_TRACE)
959 PL_runops = runops_trace; 1379 PL_runops = runops_trace;
960 1380
961 Zero (&myop, 1, LOGOP); 1381 /* we already must be executing an SLF op, there is no other valid way
962 myop.op_next = PL_op; 1382 * that can lead to creation of a new cctx */
963 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1383 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1384 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
964 1385
965 PUSHMARK (SP); 1386 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
966 EXTEND (SP, 2); 1387 cctx_ssl_frame = slf_frame;
967 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1388
968 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1389 slf_frame.prepare = slf_prepare_set_stacklevel;
969 PUTBACK; 1390 slf_frame.check = slf_check_set_stacklevel;
970 PL_op = (OP *)&myop; 1391}
971 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1392
972 SPAGAIN; 1393/* the tail of transfer: execute stuff we can only do after a transfer */
1394ECB_INLINE void
1395transfer_tail (pTHX)
1396{
1397 free_coro_mortal (aTHX);
973} 1398}
974 1399
975/* 1400/*
976 * this is a _very_ stripped down perl interpreter ;) 1401 * this is a _very_ stripped down perl interpreter ;)
977 */ 1402 */
978static void 1403static void
979cctx_run (void *arg) 1404cctx_run (void *arg)
980{ 1405{
1406#ifdef USE_ITHREADS
1407# if CORO_PTHREAD
1408 PERL_SET_CONTEXT (coro_thx);
1409# endif
1410#endif
1411 {
981 dTHX; 1412 dTHX;
982 1413
983 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1414 /* normally we would need to skip the entersub here */
984 UNLOCK; 1415 /* not doing so will re-execute it, which is exactly what we want */
985
986 /* we now skip the entersub that lead to transfer() */
987 PL_op = PL_op->op_next; 1416 /* PL_nop = PL_nop->op_next */
988 1417
989 /* inject a fake subroutine call to cctx_init */ 1418 /* inject a fake subroutine call to cctx_init */
990 cctx_prepare (aTHX_ (coro_cctx *)arg); 1419 cctx_prepare (aTHX);
991 1420
1421 /* cctx_run is the alternative tail of transfer() */
1422 transfer_tail (aTHX);
1423
992 /* somebody or something will hit me for both perl_run and PL_restartop */ 1424 /* somebody or something will hit me for both perl_run and PL_restartop */
993 PL_restartop = PL_op; 1425 PL_restartop = PL_op;
994 perl_run (PL_curinterp); 1426 perl_run (PL_curinterp);
995
996 /* 1427 /*
1428 * Unfortunately, there is no way to get at the return values of the
1429 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1430 * runtime errors here, as this is just a random interpreter, not a thread.
1431 */
1432
1433 /*
997 * If perl-run returns we assume exit() was being called or the coro 1434 * If perl-run returns we assume exit() was being called or the coro
998 * fell off the end, which seems to be the only valid (non-bug) 1435 * fell off the end, which seems to be the only valid (non-bug)
999 * reason for perl_run to return. We try to exit by jumping to the 1436 * reason for perl_run to return. We try to exit by jumping to the
1000 * bootstrap-time "top" top_env, as we cannot restore the "main" 1437 * bootstrap-time "top" top_env, as we cannot restore the "main"
1001 * coroutine as Coro has no such concept 1438 * coroutine as Coro has no such concept.
1439 * This actually isn't valid with the pthread backend, but OSes requiring
1440 * that backend are too broken to do it in a standards-compliant way.
1002 */ 1441 */
1003 PL_top_env = main_top_env; 1442 PL_top_env = main_top_env;
1004 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1443 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1444 }
1005} 1445}
1006 1446
1007static coro_cctx * 1447static coro_cctx *
1008cctx_new () 1448cctx_new (void)
1009{ 1449{
1010 coro_cctx *cctx; 1450 coro_cctx *cctx;
1451
1452 ++cctx_count;
1453 New (0, cctx, 1, coro_cctx);
1454
1455 cctx->gen = cctx_gen;
1456 cctx->flags = 0;
1457 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1458
1459 return cctx;
1460}
1461
1462/* create a new cctx only suitable as source */
1463static coro_cctx *
1464cctx_new_empty (void)
1465{
1466 coro_cctx *cctx = cctx_new ();
1467
1468 cctx->sptr = 0;
1469 coro_create (&cctx->cctx, 0, 0, 0, 0);
1470
1471 return cctx;
1472}
1473
1474/* create a new cctx suitable as destination/running a perl interpreter */
1475static coro_cctx *
1476cctx_new_run (void)
1477{
1478 coro_cctx *cctx = cctx_new ();
1011 void *stack_start; 1479 void *stack_start;
1012 size_t stack_size; 1480 size_t stack_size;
1013 1481
1014 ++cctx_count;
1015
1016 Newz (0, cctx, 1, coro_cctx);
1017
1018#if HAVE_MMAP 1482#if HAVE_MMAP
1019 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1483 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1020 /* mmap supposedly does allocate-on-write for us */ 1484 /* mmap supposedly does allocate-on-write for us */
1021 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1485 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1022 1486
1023 if (cctx->sptr != (void *)-1) 1487 if (cctx->sptr != (void *)-1)
1024 { 1488 {
1025# if CORO_STACKGUARD 1489 #if CORO_STACKGUARD
1026 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1490 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1027# endif 1491 #endif
1028 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1492 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1029 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1493 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1030 cctx->flags |= CC_MAPPED; 1494 cctx->flags |= CC_MAPPED;
1031 } 1495 }
1032 else 1496 else
1033#endif 1497#endif
1034 { 1498 {
1035 cctx->ssize = coro_stacksize * (long)sizeof (long); 1499 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1036 New (0, cctx->sptr, coro_stacksize, long); 1500 New (0, cctx->sptr, cctx_stacksize, long);
1037 1501
1038 if (!cctx->sptr) 1502 if (!cctx->sptr)
1039 { 1503 {
1040 perror ("FATAL: unable to allocate stack for coroutine"); 1504 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1041 _exit (EXIT_FAILURE); 1505 _exit (EXIT_FAILURE);
1042 } 1506 }
1043 1507
1044 stack_start = cctx->sptr; 1508 stack_start = cctx->sptr;
1045 stack_size = cctx->ssize; 1509 stack_size = cctx->ssize;
1046 } 1510 }
1047 1511
1048 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1512 #if CORO_USE_VALGRIND
1513 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1514 #endif
1515
1049 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1516 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1050 1517
1051 return cctx; 1518 return cctx;
1052} 1519}
1053 1520
… …
1055cctx_destroy (coro_cctx *cctx) 1522cctx_destroy (coro_cctx *cctx)
1056{ 1523{
1057 if (!cctx) 1524 if (!cctx)
1058 return; 1525 return;
1059 1526
1527 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1528
1060 --cctx_count; 1529 --cctx_count;
1530 coro_destroy (&cctx->cctx);
1061 1531
1532 /* coro_transfer creates new, empty cctx's */
1533 if (cctx->sptr)
1534 {
1062#if CORO_USE_VALGRIND 1535 #if CORO_USE_VALGRIND
1063 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1536 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1537 #endif
1538
1539#if HAVE_MMAP
1540 if (cctx->flags & CC_MAPPED)
1541 munmap (cctx->sptr, cctx->ssize);
1542 else
1064#endif 1543#endif
1065
1066#if HAVE_MMAP
1067 if (cctx->flags & CC_MAPPED)
1068 munmap (cctx->sptr, cctx->ssize);
1069 else
1070#endif
1071 Safefree (cctx->sptr); 1544 Safefree (cctx->sptr);
1545 }
1072 1546
1073 Safefree (cctx); 1547 Safefree (cctx);
1074} 1548}
1075 1549
1076/* wether this cctx should be destructed */ 1550/* wether this cctx should be destructed */
1077#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1551#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1078 1552
1079static coro_cctx * 1553static coro_cctx *
1080cctx_get (pTHX) 1554cctx_get (pTHX)
1081{ 1555{
1082 while (expect_true (cctx_first)) 1556 while (ecb_expect_true (cctx_first))
1083 { 1557 {
1084 coro_cctx *cctx = cctx_first; 1558 coro_cctx *cctx = cctx_first;
1085 cctx_first = cctx->next; 1559 cctx_first = cctx->next;
1086 --cctx_idle; 1560 --cctx_idle;
1087 1561
1088 if (expect_true (!CCTX_EXPIRED (cctx))) 1562 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1089 return cctx; 1563 return cctx;
1090 1564
1091 cctx_destroy (cctx); 1565 cctx_destroy (cctx);
1092 } 1566 }
1093 1567
1094 return cctx_new (); 1568 return cctx_new_run ();
1095} 1569}
1096 1570
1097static void 1571static void
1098cctx_put (coro_cctx *cctx) 1572cctx_put (coro_cctx *cctx)
1099{ 1573{
1574 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1575
1100 /* free another cctx if overlimit */ 1576 /* free another cctx if overlimit */
1101 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1577 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1102 { 1578 {
1103 coro_cctx *first = cctx_first; 1579 coro_cctx *first = cctx_first;
1104 cctx_first = first->next; 1580 cctx_first = first->next;
1105 --cctx_idle; 1581 --cctx_idle;
1106 1582
… …
1115/** coroutine switching *****************************************************/ 1591/** coroutine switching *****************************************************/
1116 1592
1117static void 1593static void
1118transfer_check (pTHX_ struct coro *prev, struct coro *next) 1594transfer_check (pTHX_ struct coro *prev, struct coro *next)
1119{ 1595{
1596 /* TODO: throwing up here is considered harmful */
1597
1120 if (expect_true (prev != next)) 1598 if (ecb_expect_true (prev != next))
1121 { 1599 {
1122 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1600 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1123 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1601 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1124 1602
1125 if (expect_false (next->flags & CF_RUNNING)) 1603 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1126 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1127
1128 if (expect_false (next->flags & CF_DESTROYED))
1129 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1604 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1130 1605
1131 if (
1132#if PERL_VERSION_ATLEAST (5,9,0) 1606#if !PERL_VERSION_ATLEAST (5,10,0)
1133 expect_false (PL_parser && PL_parser->lex_state != LEX_NOTPARSING)
1134#else
1135 expect_false (PL_lex_state != LEX_NOTPARSING) 1607 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1608 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1136#endif 1609#endif
1137 )
1138 croak ("Coro::State::transfer called while parsing, but this is not supported");
1139 } 1610 }
1140} 1611}
1141 1612
1142/* always use the TRANSFER macro */ 1613/* always use the TRANSFER macro */
1143static void NOINLINE 1614static void ecb_noinline /* noinline so we have a fixed stackframe */
1144transfer (pTHX_ struct coro *prev, struct coro *next) 1615transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1145{ 1616{
1146 dSTACKLEVEL; 1617 dSTACKLEVEL;
1147 static volatile int has_throw;
1148 1618
1149 /* sometimes transfer is only called to set idle_sp */ 1619 /* sometimes transfer is only called to set idle_sp */
1150 if (expect_false (!next)) 1620 if (ecb_expect_false (!prev))
1151 { 1621 {
1152 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1622 cctx_current->idle_sp = STACKLEVEL;
1153 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1623 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1154 } 1624 }
1155 else if (expect_true (prev != next)) 1625 else if (ecb_expect_true (prev != next))
1156 { 1626 {
1157 coro_cctx *prev__cctx; 1627 coro_cctx *cctx_prev;
1158 1628
1159 if (expect_false (prev->flags & CF_NEW)) 1629 if (ecb_expect_false (prev->flags & CF_NEW))
1160 { 1630 {
1161 /* create a new empty context */ 1631 /* create a new empty/source context */
1162 Newz (0, prev->cctx, 1, coro_cctx);
1163 prev->flags &= ~CF_NEW; 1632 prev->flags &= ~CF_NEW;
1164 prev->flags |= CF_RUNNING; 1633 prev->flags |= CF_RUNNING;
1165 } 1634 }
1166 1635
1167 prev->flags &= ~CF_RUNNING; 1636 prev->flags &= ~CF_RUNNING;
1168 next->flags |= CF_RUNNING; 1637 next->flags |= CF_RUNNING;
1169 1638
1170 LOCK;
1171
1172 /* first get rid of the old state */ 1639 /* first get rid of the old state */
1173 save_perl (aTHX_ prev); 1640 save_perl (aTHX_ prev);
1174 1641
1175 if (expect_false (next->flags & CF_NEW)) 1642 if (ecb_expect_false (next->flags & CF_NEW))
1176 { 1643 {
1177 /* need to start coroutine */ 1644 /* need to start coroutine */
1178 next->flags &= ~CF_NEW; 1645 next->flags &= ~CF_NEW;
1179 /* setup coroutine call */ 1646 /* setup coroutine call */
1180 coro_setup (aTHX_ next); 1647 init_perl (aTHX_ next);
1181 } 1648 }
1182 else 1649 else
1183 load_perl (aTHX_ next); 1650 load_perl (aTHX_ next);
1184 1651
1185 prev__cctx = prev->cctx;
1186
1187 /* possibly "free" the cctx */ 1652 /* possibly untie and reuse the cctx */
1188 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1653 if (ecb_expect_true (
1654 cctx_current->idle_sp == STACKLEVEL
1655 && !(cctx_current->flags & CC_TRACE)
1656 && !force_cctx
1657 ))
1189 { 1658 {
1190 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1659 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1191 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1660 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1192 1661
1193 prev->cctx = 0;
1194
1195 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1662 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1196 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1663 /* without this the next cctx_get might destroy the running cctx while still in use */
1197 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1664 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1198 if (!next->cctx) 1665 if (ecb_expect_true (!next->cctx))
1199 next->cctx = cctx_get (aTHX); 1666 next->cctx = cctx_get (aTHX);
1200 1667
1201 cctx_put (prev__cctx); 1668 cctx_put (cctx_current);
1202 } 1669 }
1670 else
1671 prev->cctx = cctx_current;
1203 1672
1204 ++next->usecount; 1673 ++next->usecount;
1205 1674
1206 if (expect_true (!next->cctx)) 1675 cctx_prev = cctx_current;
1207 next->cctx = cctx_get (aTHX); 1676 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1208 1677
1209 has_throw = !!next->throw; 1678 next->cctx = 0;
1210 1679
1211 if (expect_false (prev__cctx != next->cctx)) 1680 if (ecb_expect_false (cctx_prev != cctx_current))
1212 { 1681 {
1213 prev__cctx->top_env = PL_top_env; 1682 cctx_prev->top_env = PL_top_env;
1214 PL_top_env = next->cctx->top_env; 1683 PL_top_env = cctx_current->top_env;
1215 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1684 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1216 } 1685 }
1217 1686
1218 free_coro_mortal (aTHX); 1687 transfer_tail (aTHX);
1219 UNLOCK;
1220
1221 if (expect_false (has_throw))
1222 {
1223 struct coro *coro = SvSTATE (coro_current);
1224
1225 if (coro->throw)
1226 {
1227 SV *exception = coro->throw;
1228 coro->throw = 0;
1229 sv_setsv (ERRSV, exception);
1230 croak (0);
1231 }
1232 }
1233 } 1688 }
1234} 1689}
1235 1690
1236struct transfer_args
1237{
1238 struct coro *prev, *next;
1239};
1240
1241#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1691#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1242#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1692#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1243 1693
1244/** high level stuff ********************************************************/ 1694/** high level stuff ********************************************************/
1245 1695
1696/* this function is actually Coro, not Coro::State, but we call it from here */
1697/* because it is convenient - but it hasn't been declared yet for that reason */
1246static int 1698static void
1699coro_call_on_destroy (pTHX_ struct coro *coro);
1700
1701static void
1247coro_state_destroy (pTHX_ struct coro *coro) 1702coro_state_destroy (pTHX_ struct coro *coro)
1248{ 1703{
1249 if (coro->flags & CF_DESTROYED) 1704 if (coro->flags & CF_ZOMBIE)
1250 return 0; 1705 return;
1251 1706
1707 slf_destroy (aTHX_ coro);
1708
1252 coro->flags |= CF_DESTROYED; 1709 coro->flags |= CF_ZOMBIE;
1253 1710
1254 if (coro->flags & CF_READY) 1711 if (coro->flags & CF_READY)
1255 { 1712 {
1256 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1713 /* reduce nready, as destroying a ready coro effectively unreadies it */
1257 /* alternative: look through all ready queues and remove the coro */ 1714 /* alternative: look through all ready queues and remove the coro */
1258 LOCK;
1259 --coro_nready; 1715 --coro_nready;
1260 UNLOCK;
1261 } 1716 }
1262 else 1717 else
1263 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1718 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1264
1265 if (coro->mainstack && coro->mainstack != main_mainstack)
1266 {
1267 struct coro temp;
1268
1269 if (coro->flags & CF_RUNNING)
1270 croak ("FATAL: tried to destroy currently running coroutine");
1271
1272 save_perl (aTHX_ &temp);
1273 load_perl (aTHX_ coro);
1274
1275 coro_destroy (aTHX_ coro);
1276
1277 load_perl (aTHX_ &temp);
1278
1279 coro->slot = 0;
1280 }
1281
1282 cctx_destroy (coro->cctx);
1283 SvREFCNT_dec (coro->args);
1284 1719
1285 if (coro->next) coro->next->prev = coro->prev; 1720 if (coro->next) coro->next->prev = coro->prev;
1286 if (coro->prev) coro->prev->next = coro->next; 1721 if (coro->prev) coro->prev->next = coro->next;
1287 if (coro == coro_first) coro_first = coro->next; 1722 if (coro == coro_first) coro_first = coro->next;
1288 1723
1289 return 1; 1724 if (coro->mainstack
1725 && coro->mainstack != main_mainstack
1726 && coro->slot
1727 && !PL_dirty)
1728 destroy_perl (aTHX_ coro);
1729
1730 cctx_destroy (coro->cctx);
1731 SvREFCNT_dec (coro->startcv);
1732 SvREFCNT_dec (coro->args);
1733 SvREFCNT_dec (coro->swap_sv);
1734 SvREFCNT_dec (CORO_THROW);
1735
1736 coro_call_on_destroy (aTHX_ coro);
1737
1738 /* more destruction mayhem in coro_state_free */
1290} 1739}
1291 1740
1292static int 1741static int
1293coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1742coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1294{ 1743{
1295 struct coro *coro = (struct coro *)mg->mg_ptr; 1744 struct coro *coro = (struct coro *)mg->mg_ptr;
1296 mg->mg_ptr = 0; 1745 mg->mg_ptr = 0;
1297 1746
1298 coro->hv = 0;
1299
1300 if (--coro->refcnt < 0)
1301 {
1302 coro_state_destroy (aTHX_ coro); 1747 coro_state_destroy (aTHX_ coro);
1748 SvREFCNT_dec (coro->on_destroy);
1749 SvREFCNT_dec (coro->status);
1750
1303 Safefree (coro); 1751 Safefree (coro);
1304 }
1305 1752
1306 return 0; 1753 return 0;
1307} 1754}
1308 1755
1309static int 1756static int ecb_cold
1310coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1757coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1311{ 1758{
1312 struct coro *coro = (struct coro *)mg->mg_ptr; 1759 /* called when perl clones the current process the slow way (windows process emulation) */
1313 1760 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1314 ++coro->refcnt; 1761 mg->mg_ptr = 0;
1762 mg->mg_virtual = 0;
1315 1763
1316 return 0; 1764 return 0;
1317} 1765}
1318 1766
1319static MGVTBL coro_state_vtbl = { 1767static MGVTBL coro_state_vtbl = {
… …
1326# define MGf_DUP 0 1774# define MGf_DUP 0
1327#endif 1775#endif
1328}; 1776};
1329 1777
1330static void 1778static void
1331prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1779prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1332{ 1780{
1333 ta->prev = SvSTATE (prev_sv); 1781 ta->prev = SvSTATE (prev_sv);
1334 ta->next = SvSTATE (next_sv); 1782 ta->next = SvSTATE (next_sv);
1335 TRANSFER_CHECK (*ta); 1783 TRANSFER_CHECK (*ta);
1336} 1784}
1337 1785
1338static void 1786static void
1339api_transfer (SV *prev_sv, SV *next_sv) 1787api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1788{
1789 struct coro_transfer_args ta;
1790
1791 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1792 TRANSFER (ta, 1);
1793}
1794
1795/** Coro ********************************************************************/
1796
1797ECB_INLINE void
1798coro_enq (pTHX_ struct coro *coro)
1799{
1800 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1801
1802 SvREFCNT_inc_NN (coro->hv);
1803
1804 coro->next_ready = 0;
1805 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1806 ready [1] = coro;
1807}
1808
1809ECB_INLINE struct coro *
1810coro_deq (pTHX)
1811{
1812 int prio;
1813
1814 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1815 {
1816 struct coro **ready = coro_ready [prio];
1817
1818 if (ready [0])
1819 {
1820 struct coro *coro = ready [0];
1821 ready [0] = coro->next_ready;
1822 return coro;
1823 }
1824 }
1825
1826 return 0;
1827}
1828
1829static void
1830invoke_sv_ready_hook_helper (void)
1340{ 1831{
1341 dTHX; 1832 dTHX;
1342 struct transfer_args ta; 1833 dSP;
1343 1834
1344 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1835 ENTER;
1345 TRANSFER (ta); 1836 SAVETMPS;
1346}
1347 1837
1348/** Coro ********************************************************************/ 1838 PUSHMARK (SP);
1839 PUTBACK;
1840 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1349 1841
1350static void 1842 FREETMPS;
1351coro_enq (pTHX_ SV *coro_sv) 1843 LEAVE;
1352{
1353 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1354}
1355
1356static SV *
1357coro_deq (pTHX)
1358{
1359 int prio;
1360
1361 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1362 if (AvFILLp (coro_ready [prio]) >= 0)
1363 return av_shift (coro_ready [prio]);
1364
1365 return 0;
1366} 1844}
1367 1845
1368static int 1846static int
1369api_ready (SV *coro_sv) 1847api_ready (pTHX_ SV *coro_sv)
1370{ 1848{
1371 dTHX;
1372 struct coro *coro;
1373
1374 if (SvROK (coro_sv))
1375 coro_sv = SvRV (coro_sv);
1376
1377 coro = SvSTATE (coro_sv); 1849 struct coro *coro = SvSTATE (coro_sv);
1378 1850
1379 if (coro->flags & CF_READY) 1851 if (coro->flags & CF_READY)
1380 return 0; 1852 return 0;
1381 1853
1382 coro->flags |= CF_READY; 1854 coro->flags |= CF_READY;
1383 1855
1384 LOCK; 1856 coro_enq (aTHX_ coro);
1385 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1857
1386 ++coro_nready; 1858 if (!coro_nready++)
1387 UNLOCK; 1859 if (coroapi.readyhook)
1860 coroapi.readyhook ();
1388 1861
1389 return 1; 1862 return 1;
1390} 1863}
1391 1864
1392static int 1865static int
1393api_is_ready (SV *coro_sv) 1866api_is_ready (pTHX_ SV *coro_sv)
1394{ 1867{
1395 dTHX;
1396 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1868 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1397} 1869}
1398 1870
1399static void 1871/* expects to own a reference to next->hv */
1872ECB_INLINE void
1400prepare_schedule (pTHX_ struct transfer_args *ta) 1873prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1401{ 1874{
1402 SV *prev_sv, *next_sv;
1403
1404 for (;;)
1405 {
1406 LOCK;
1407 next_sv = coro_deq (aTHX);
1408
1409 /* nothing to schedule: call the idle handler */
1410 if (expect_false (!next_sv))
1411 {
1412 dSP;
1413 UNLOCK;
1414
1415 ENTER;
1416 SAVETMPS;
1417
1418 PUSHMARK (SP);
1419 PUTBACK;
1420 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1421 SPAGAIN;
1422
1423 FREETMPS;
1424 LEAVE;
1425 continue;
1426 }
1427
1428 ta->next = SvSTATE (next_sv);
1429
1430 /* cannot transfer to destroyed coros, skip and look for next */
1431 if (expect_false (ta->next->flags & CF_DESTROYED))
1432 {
1433 UNLOCK;
1434 SvREFCNT_dec (next_sv);
1435 /* coro_nready is already taken care of by destroy */
1436 continue;
1437 }
1438
1439 --coro_nready;
1440 UNLOCK;
1441 break;
1442 }
1443
1444 /* free this only after the transfer */
1445 prev_sv = SvRV (coro_current); 1875 SV *prev_sv = SvRV (coro_current);
1876
1446 ta->prev = SvSTATE (prev_sv); 1877 ta->prev = SvSTATE_hv (prev_sv);
1878 ta->next = next;
1879
1447 TRANSFER_CHECK (*ta); 1880 TRANSFER_CHECK (*ta);
1448 assert (ta->next->flags & CF_READY); 1881
1449 ta->next->flags &= ~CF_READY;
1450 SvRV_set (coro_current, next_sv); 1882 SvRV_set (coro_current, (SV *)next->hv);
1451 1883
1452 LOCK;
1453 free_coro_mortal (aTHX); 1884 free_coro_mortal (aTHX);
1454 coro_mortal = prev_sv; 1885 coro_mortal = prev_sv;
1455 UNLOCK;
1456} 1886}
1457 1887
1458static void 1888static void
1889prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1890{
1891 for (;;)
1892 {
1893 struct coro *next = coro_deq (aTHX);
1894
1895 if (ecb_expect_true (next))
1896 {
1897 /* cannot transfer to destroyed coros, skip and look for next */
1898 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1899 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1900 else
1901 {
1902 next->flags &= ~CF_READY;
1903 --coro_nready;
1904
1905 prepare_schedule_to (aTHX_ ta, next);
1906 break;
1907 }
1908 }
1909 else
1910 {
1911 /* nothing to schedule: call the idle handler */
1912 if (SvROK (sv_idle)
1913 && SvOBJECT (SvRV (sv_idle)))
1914 {
1915 if (SvRV (sv_idle) == SvRV (coro_current))
1916 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1917
1918 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1919 api_ready (aTHX_ SvRV (sv_idle));
1920 --coro_nready;
1921 }
1922 else
1923 {
1924 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1925 dSP;
1926
1927 ENTER;
1928 SAVETMPS;
1929
1930 PUSHMARK (SP);
1931 PUTBACK;
1932 call_sv (sv_idle, G_VOID | G_DISCARD);
1933
1934 FREETMPS;
1935 LEAVE;
1936 }
1937 }
1938 }
1939}
1940
1941ECB_INLINE void
1459prepare_cede (pTHX_ struct transfer_args *ta) 1942prepare_cede (pTHX_ struct coro_transfer_args *ta)
1460{ 1943{
1461 api_ready (coro_current); 1944 api_ready (aTHX_ coro_current);
1462 prepare_schedule (aTHX_ ta); 1945 prepare_schedule (aTHX_ ta);
1463} 1946}
1464 1947
1948ECB_INLINE void
1949prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1950{
1951 SV *prev = SvRV (coro_current);
1952
1953 if (coro_nready)
1954 {
1955 prepare_schedule (aTHX_ ta);
1956 api_ready (aTHX_ prev);
1957 }
1958 else
1959 prepare_nop (aTHX_ ta);
1960}
1961
1962static void
1963api_schedule (pTHX)
1964{
1965 struct coro_transfer_args ta;
1966
1967 prepare_schedule (aTHX_ &ta);
1968 TRANSFER (ta, 1);
1969}
1970
1971static void
1972api_schedule_to (pTHX_ SV *coro_sv)
1973{
1974 struct coro_transfer_args ta;
1975 struct coro *next = SvSTATE (coro_sv);
1976
1977 SvREFCNT_inc_NN (coro_sv);
1978 prepare_schedule_to (aTHX_ &ta, next);
1979}
1980
1465static int 1981static int
1466prepare_cede_notself (pTHX_ struct transfer_args *ta) 1982api_cede (pTHX)
1467{ 1983{
1468 if (coro_nready) 1984 struct coro_transfer_args ta;
1469 { 1985
1470 SV *prev = SvRV (coro_current);
1471 prepare_schedule (aTHX_ ta); 1986 prepare_cede (aTHX_ &ta);
1472 api_ready (prev); 1987
1988 if (ecb_expect_true (ta.prev != ta.next))
1989 {
1990 TRANSFER (ta, 1);
1473 return 1; 1991 return 1;
1474 } 1992 }
1475 else 1993 else
1476 return 0; 1994 return 0;
1477} 1995}
1478 1996
1479static void
1480api_schedule (void)
1481{
1482 dTHX;
1483 struct transfer_args ta;
1484
1485 prepare_schedule (aTHX_ &ta);
1486 TRANSFER (ta);
1487}
1488
1489static int 1997static int
1490api_cede (void) 1998api_cede_notself (pTHX)
1491{ 1999{
1492 dTHX; 2000 if (coro_nready)
2001 {
1493 struct transfer_args ta; 2002 struct coro_transfer_args ta;
1494 2003
1495 prepare_cede (aTHX_ &ta); 2004 prepare_cede_notself (aTHX_ &ta);
1496
1497 if (expect_true (ta.prev != ta.next))
1498 {
1499 TRANSFER (ta); 2005 TRANSFER (ta, 1);
1500 return 1; 2006 return 1;
1501 } 2007 }
1502 else 2008 else
1503 return 0; 2009 return 0;
1504} 2010}
1505 2011
1506static int 2012static void
1507api_cede_notself (void)
1508{
1509 dTHX;
1510 struct transfer_args ta;
1511
1512 if (prepare_cede_notself (aTHX_ &ta))
1513 {
1514 TRANSFER (ta);
1515 return 1;
1516 }
1517 else
1518 return 0;
1519}
1520
1521static void
1522api_trace (SV *coro_sv, int flags) 2013api_trace (pTHX_ SV *coro_sv, int flags)
1523{ 2014{
1524 dTHX;
1525 struct coro *coro = SvSTATE (coro_sv); 2015 struct coro *coro = SvSTATE (coro_sv);
1526 2016
2017 if (coro->flags & CF_RUNNING)
2018 croak ("cannot enable tracing on a running coroutine, caught");
2019
1527 if (flags & CC_TRACE) 2020 if (flags & CC_TRACE)
1528 { 2021 {
1529 if (!coro->cctx) 2022 if (!coro->cctx)
1530 coro->cctx = cctx_new (); 2023 coro->cctx = cctx_new_run ();
1531 else if (!(coro->cctx->flags & CC_TRACE)) 2024 else if (!(coro->cctx->flags & CC_TRACE))
1532 croak ("cannot enable tracing on coroutine with custom stack"); 2025 croak ("cannot enable tracing on coroutine with custom stack, caught");
1533 2026
1534 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2027 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1535 } 2028 }
1536 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2029 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1537 { 2030 {
… …
1542 else 2035 else
1543 coro->slot->runops = RUNOPS_DEFAULT; 2036 coro->slot->runops = RUNOPS_DEFAULT;
1544 } 2037 }
1545} 2038}
1546 2039
2040static void
2041coro_push_av (pTHX_ AV *av, I32 gimme_v)
2042{
2043 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2044 {
2045 dSP;
2046
2047 if (gimme_v == G_SCALAR)
2048 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2049 else
2050 {
2051 int i;
2052 EXTEND (SP, AvFILLp (av) + 1);
2053
2054 for (i = 0; i <= AvFILLp (av); ++i)
2055 PUSHs (AvARRAY (av)[i]);
2056 }
2057
2058 PUTBACK;
2059 }
2060}
2061
2062static void
2063coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2064{
2065 if (!coro->on_destroy)
2066 coro->on_destroy = newAV ();
2067
2068 av_push (coro->on_destroy, cb);
2069}
2070
2071static void
2072slf_destroy_join (pTHX_ struct CoroSLF *frame)
2073{
2074 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2075}
2076
2077static int
2078slf_check_join (pTHX_ struct CoroSLF *frame)
2079{
2080 struct coro *coro = (struct coro *)frame->data;
2081
2082 if (!coro->status)
2083 return 1;
2084
2085 frame->destroy = 0;
2086
2087 coro_push_av (aTHX_ coro->status, GIMME_V);
2088
2089 SvREFCNT_dec ((SV *)coro->hv);
2090
2091 return 0;
2092}
2093
2094static void
2095slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{
2097 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2098
2099 if (items > 1)
2100 croak ("join called with too many arguments");
2101
2102 if (coro->status)
2103 frame->prepare = prepare_nop;
2104 else
2105 {
2106 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2107 frame->prepare = prepare_schedule;
2108 }
2109
2110 frame->check = slf_check_join;
2111 frame->destroy = slf_destroy_join;
2112 frame->data = (void *)coro;
2113 SvREFCNT_inc (coro->hv);
2114}
2115
2116static void
2117coro_call_on_destroy (pTHX_ struct coro *coro)
2118{
2119 AV *od = coro->on_destroy;
2120
2121 if (!od)
2122 return;
2123
2124 while (AvFILLp (od) >= 0)
2125 {
2126 SV *cb = sv_2mortal (av_pop (od));
2127
2128 /* coro hv's (and only hv's at the moment) are supported as well */
2129 if (SvSTATEhv_p (aTHX_ cb))
2130 api_ready (aTHX_ cb);
2131 else
2132 {
2133 dSP; /* don't disturb outer sp */
2134 PUSHMARK (SP);
2135
2136 if (coro->status)
2137 {
2138 PUTBACK;
2139 coro_push_av (aTHX_ coro->status, G_ARRAY);
2140 SPAGAIN;
2141 }
2142
2143 PUTBACK;
2144 call_sv (cb, G_VOID | G_DISCARD);
2145 }
2146 }
2147}
2148
2149static void
2150coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2151{
2152 AV *av;
2153
2154 if (coro->status)
2155 {
2156 av = coro->status;
2157 av_clear (av);
2158 }
2159 else
2160 av = coro->status = newAV ();
2161
2162 /* items are actually not so common, so optimise for this case */
2163 if (items)
2164 {
2165 int i;
2166
2167 av_extend (av, items - 1);
2168
2169 for (i = 0; i < items; ++i)
2170 av_push (av, SvREFCNT_inc_NN (arg [i]));
2171 }
2172}
2173
2174static void
2175slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2176{
2177 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2178 api_ready (aTHX_ sv_manager);
2179
2180 frame->prepare = prepare_schedule;
2181 frame->check = slf_check_repeat;
2182
2183 /* as a minor optimisation, we could unwind all stacks here */
2184 /* but that puts extra pressure on pp_slf, and is not worth much */
2185 /*coro_unwind_stacks (aTHX);*/
2186}
2187
2188static void
2189slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2190{
2191 HV *coro_hv = (HV *)SvRV (coro_current);
2192
2193 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2194 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2195}
2196
2197static void
2198slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2199{
2200 HV *coro_hv;
2201 struct coro *coro;
2202
2203 if (items <= 0)
2204 croak ("Coro::cancel called without coro object,");
2205
2206 coro = SvSTATE (arg [0]);
2207 coro_hv = coro->hv;
2208
2209 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2210
2211 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2212 {
2213 /* coro currently busy cancelling something, so just notify it */
2214 coro->slf_frame.data = (void *)coro;
2215
2216 frame->prepare = prepare_nop;
2217 frame->check = slf_check_nop;
2218 }
2219 else if (coro_hv == (HV *)SvRV (coro_current))
2220 {
2221 /* cancelling the current coro is allowed, and equals terminate */
2222 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2223 }
2224 else
2225 {
2226 struct coro *self = SvSTATE_current;
2227
2228 /* otherwise we cancel directly, purely for speed reasons
2229 * unfortunately, this requires some magic trickery, as
2230 * somebody else could cancel us, so we have to fight the cancellation.
2231 * this is ugly, and hopefully fully worth the extra speed.
2232 * besides, I can't get the slow-but-safe version working...
2233 */
2234 slf_frame.data = 0;
2235 self->flags |= CF_NOCANCEL;
2236 coro_state_destroy (aTHX_ coro);
2237 self->flags &= ~CF_NOCANCEL;
2238
2239 if (slf_frame.data)
2240 {
2241 /* while we were busy we have been cancelled, so terminate */
2242 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2243 }
2244 else
2245 {
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 }
2250}
2251
2252static int
2253slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2254{
2255 frame->prepare = 0;
2256 coro_unwind_stacks (aTHX);
2257
2258 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2259
2260 return 1;
2261}
2262
2263static int
2264safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2265{
2266 if (coro->cctx)
2267 croak ("coro inside C callback, unable to cancel at this time, caught");
2268
2269 if (coro->flags & CF_NEW)
2270 {
2271 coro_set_status (aTHX_ coro, arg, items);
2272 coro_state_destroy (aTHX_ coro);
2273 }
2274 else
2275 {
2276 if (!coro->slf_frame.prepare)
2277 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2278
2279 slf_destroy (aTHX_ coro);
2280
2281 coro_set_status (aTHX_ coro, arg, items);
2282 coro->slf_frame.prepare = prepare_nop;
2283 coro->slf_frame.check = slf_check_safe_cancel;
2284
2285 api_ready (aTHX_ (SV *)coro->hv);
2286 }
2287
2288 return 1;
2289}
2290
2291/*****************************************************************************/
2292/* async pool handler */
2293
2294static int
2295slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2296{
2297 HV *hv = (HV *)SvRV (coro_current);
2298 struct coro *coro = (struct coro *)frame->data;
2299
2300 if (!coro->invoke_cb)
2301 return 1; /* loop till we have invoke */
2302 else
2303 {
2304 hv_store (hv, "desc", sizeof ("desc") - 1,
2305 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2306
2307 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2308
2309 {
2310 dSP;
2311 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2312 PUTBACK;
2313 }
2314
2315 SvREFCNT_dec (GvAV (PL_defgv));
2316 GvAV (PL_defgv) = coro->invoke_av;
2317 coro->invoke_av = 0;
2318
2319 return 0;
2320 }
2321}
2322
2323static void
2324slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2325{
2326 HV *hv = (HV *)SvRV (coro_current);
2327 struct coro *coro = SvSTATE_hv ((SV *)hv);
2328
2329 if (ecb_expect_true (coro->saved_deffh))
2330 {
2331 /* subsequent iteration */
2332 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2333 coro->saved_deffh = 0;
2334
2335 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2336 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2337 {
2338 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2339 return;
2340 }
2341 else
2342 {
2343 av_clear (GvAV (PL_defgv));
2344 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2345
2346 coro->prio = 0;
2347
2348 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2349 api_trace (aTHX_ coro_current, 0);
2350
2351 frame->prepare = prepare_schedule;
2352 av_push (av_async_pool, SvREFCNT_inc (hv));
2353 }
2354 }
2355 else
2356 {
2357 /* first iteration, simply fall through */
2358 frame->prepare = prepare_nop;
2359 }
2360
2361 frame->check = slf_check_pool_handler;
2362 frame->data = (void *)coro;
2363}
2364
2365/*****************************************************************************/
2366/* rouse callback */
2367
2368#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2369
2370static void
2371coro_rouse_callback (pTHX_ CV *cv)
2372{
2373 dXSARGS;
2374 SV *data = (SV *)S_GENSUB_ARG;
2375
2376 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2377 {
2378 /* first call, set args */
2379 SV *coro = SvRV (data);
2380 AV *av = newAV ();
2381
2382 SvRV_set (data, (SV *)av);
2383
2384 /* better take a full copy of the arguments */
2385 while (items--)
2386 av_store (av, items, newSVsv (ST (items)));
2387
2388 api_ready (aTHX_ coro);
2389 SvREFCNT_dec (coro);
2390 }
2391
2392 XSRETURN_EMPTY;
2393}
2394
2395static int
2396slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2397{
2398 SV *data = (SV *)frame->data;
2399
2400 if (CORO_THROW)
2401 return 0;
2402
2403 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2404 return 1;
2405
2406 /* now push all results on the stack */
2407 {
2408 dSP;
2409 AV *av = (AV *)SvRV (data);
2410 int i;
2411
2412 EXTEND (SP, AvFILLp (av) + 1);
2413 for (i = 0; i <= AvFILLp (av); ++i)
2414 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2415
2416 /* we have stolen the elements, so set length to zero and free */
2417 AvFILLp (av) = -1;
2418 av_undef (av);
2419
2420 PUTBACK;
2421 }
2422
2423 return 0;
2424}
2425
2426static void
2427slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2428{
2429 SV *cb;
2430
2431 if (items)
2432 cb = arg [0];
2433 else
2434 {
2435 struct coro *coro = SvSTATE_current;
2436
2437 if (!coro->rouse_cb)
2438 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2439
2440 cb = sv_2mortal (coro->rouse_cb);
2441 coro->rouse_cb = 0;
2442 }
2443
2444 if (!SvROK (cb)
2445 || SvTYPE (SvRV (cb)) != SVt_PVCV
2446 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2447 croak ("Coro::rouse_wait called with illegal callback argument,");
2448
2449 {
2450 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2451 SV *data = (SV *)S_GENSUB_ARG;
2452
2453 frame->data = (void *)data;
2454 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2455 frame->check = slf_check_rouse_wait;
2456 }
2457}
2458
2459static SV *
2460coro_new_rouse_cb (pTHX)
2461{
2462 HV *hv = (HV *)SvRV (coro_current);
2463 struct coro *coro = SvSTATE_hv (hv);
2464 SV *data = newRV_inc ((SV *)hv);
2465 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2466
2467 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2468 SvREFCNT_dec (data); /* magicext increases the refcount */
2469
2470 SvREFCNT_dec (coro->rouse_cb);
2471 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2472
2473 return cb;
2474}
2475
2476/*****************************************************************************/
2477/* schedule-like-function opcode (SLF) */
2478
2479static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2480static const CV *slf_cv;
2481static SV **slf_argv;
2482static int slf_argc, slf_arga; /* count, allocated */
2483static I32 slf_ax; /* top of stack, for restore */
2484
2485/* this restores the stack in the case we patched the entersub, to */
2486/* recreate the stack frame as perl will on following calls */
2487/* since entersub cleared the stack */
2488static OP *
2489pp_restore (pTHX)
2490{
2491 int i;
2492 SV **SP = PL_stack_base + slf_ax;
2493
2494 PUSHMARK (SP);
2495
2496 EXTEND (SP, slf_argc + 1);
2497
2498 for (i = 0; i < slf_argc; ++i)
2499 PUSHs (sv_2mortal (slf_argv [i]));
2500
2501 PUSHs ((SV *)CvGV (slf_cv));
2502
2503 RETURNOP (slf_restore.op_first);
2504}
2505
2506static void
2507slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2508{
2509 SV **arg = (SV **)slf_frame.data;
2510
2511 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2512}
2513
2514static void
2515slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2516{
2517 if (items != 2)
2518 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2519
2520 frame->prepare = slf_prepare_transfer;
2521 frame->check = slf_check_nop;
2522 frame->data = (void *)arg; /* let's hope it will stay valid */
2523}
2524
2525static void
2526slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2527{
2528 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_nop;
2530}
2531
2532static void
2533slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2534{
2535 struct coro *next = (struct coro *)slf_frame.data;
2536
2537 SvREFCNT_inc_NN (next->hv);
2538 prepare_schedule_to (aTHX_ ta, next);
2539}
2540
2541static void
2542slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2543{
2544 if (!items)
2545 croak ("Coro::schedule_to expects a coroutine argument, caught");
2546
2547 frame->data = (void *)SvSTATE (arg [0]);
2548 frame->prepare = slf_prepare_schedule_to;
2549 frame->check = slf_check_nop;
2550}
2551
2552static void
2553slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2554{
2555 api_ready (aTHX_ SvRV (coro_current));
2556
2557 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2558}
2559
2560static void
2561slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 frame->prepare = prepare_cede;
2564 frame->check = slf_check_nop;
2565}
2566
2567static void
2568slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 frame->prepare = prepare_cede_notself;
2571 frame->check = slf_check_nop;
2572}
2573
2574/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2575static void
2576slf_destroy (pTHX_ struct coro *coro)
2577{
2578 /* this callback is reserved for slf functions needing to do cleanup */
2579 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2580 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2581
2582 /*
2583 * The on_destroy above most likely is from an SLF call.
2584 * Since by definition the SLF call will not finish when we destroy
2585 * the coro, we will have to force-finish it here, otherwise
2586 * cleanup functions cannot call SLF functions.
2587 */
2588 coro->slf_frame.prepare = 0;
2589}
2590
2591/*
2592 * these not obviously related functions are all rolled into one
2593 * function to increase chances that they all will call transfer with the same
2594 * stack offset
2595 * SLF stands for "schedule-like-function".
2596 */
2597static OP *
2598pp_slf (pTHX)
2599{
2600 I32 checkmark; /* mark SP to see how many elements check has pushed */
2601
2602 /* set up the slf frame, unless it has already been set-up */
2603 /* the latter happens when a new coro has been started */
2604 /* or when a new cctx was attached to an existing coroutine */
2605 if (ecb_expect_true (!slf_frame.prepare))
2606 {
2607 /* first iteration */
2608 dSP;
2609 SV **arg = PL_stack_base + TOPMARK + 1;
2610 int items = SP - arg; /* args without function object */
2611 SV *gv = *sp;
2612
2613 /* do a quick consistency check on the "function" object, and if it isn't */
2614 /* for us, divert to the real entersub */
2615 if (SvTYPE (gv) != SVt_PVGV
2616 || !GvCV (gv)
2617 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2618 return PL_ppaddr[OP_ENTERSUB](aTHX);
2619
2620 if (!(PL_op->op_flags & OPf_STACKED))
2621 {
2622 /* ampersand-form of call, use @_ instead of stack */
2623 AV *av = GvAV (PL_defgv);
2624 arg = AvARRAY (av);
2625 items = AvFILLp (av) + 1;
2626 }
2627
2628 /* now call the init function, which needs to set up slf_frame */
2629 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2630 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2631
2632 /* pop args */
2633 SP = PL_stack_base + POPMARK;
2634
2635 PUTBACK;
2636 }
2637
2638 /* now that we have a slf_frame, interpret it! */
2639 /* we use a callback system not to make the code needlessly */
2640 /* complicated, but so we can run multiple perl coros from one cctx */
2641
2642 do
2643 {
2644 struct coro_transfer_args ta;
2645
2646 slf_frame.prepare (aTHX_ &ta);
2647 TRANSFER (ta, 0);
2648
2649 checkmark = PL_stack_sp - PL_stack_base;
2650 }
2651 while (slf_frame.check (aTHX_ &slf_frame));
2652
2653 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2654
2655 /* exception handling */
2656 if (ecb_expect_false (CORO_THROW))
2657 {
2658 SV *exception = sv_2mortal (CORO_THROW);
2659
2660 CORO_THROW = 0;
2661 sv_setsv (ERRSV, exception);
2662 croak (0);
2663 }
2664
2665 /* return value handling - mostly like entersub */
2666 /* make sure we put something on the stack in scalar context */
2667 if (GIMME_V == G_SCALAR
2668 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2669 {
2670 dSP;
2671 SV **bot = PL_stack_base + checkmark;
2672
2673 if (sp == bot) /* too few, push undef */
2674 bot [1] = &PL_sv_undef;
2675 else /* too many, take last one */
2676 bot [1] = *sp;
2677
2678 SP = bot + 1;
2679
2680 PUTBACK;
2681 }
2682
2683 return NORMAL;
2684}
2685
2686static void
2687api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2688{
2689 int i;
2690 SV **arg = PL_stack_base + ax;
2691 int items = PL_stack_sp - arg + 1;
2692
2693 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2694
2695 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2696 && PL_op->op_ppaddr != pp_slf)
2697 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2698
2699 CvFLAGS (cv) |= CVf_SLF;
2700 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2701 slf_cv = cv;
2702
2703 /* we patch the op, and then re-run the whole call */
2704 /* we have to put the same argument on the stack for this to work */
2705 /* and this will be done by pp_restore */
2706 slf_restore.op_next = (OP *)&slf_restore;
2707 slf_restore.op_type = OP_CUSTOM;
2708 slf_restore.op_ppaddr = pp_restore;
2709 slf_restore.op_first = PL_op;
2710
2711 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2712
2713 if (PL_op->op_flags & OPf_STACKED)
2714 {
2715 if (items > slf_arga)
2716 {
2717 slf_arga = items;
2718 Safefree (slf_argv);
2719 New (0, slf_argv, slf_arga, SV *);
2720 }
2721
2722 slf_argc = items;
2723
2724 for (i = 0; i < items; ++i)
2725 slf_argv [i] = SvREFCNT_inc (arg [i]);
2726 }
2727 else
2728 slf_argc = 0;
2729
2730 PL_op->op_ppaddr = pp_slf;
2731 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2732
2733 PL_op = (OP *)&slf_restore;
2734}
2735
2736/*****************************************************************************/
2737/* dynamic wind */
2738
2739static void
2740on_enterleave_call (pTHX_ SV *cb)
2741{
2742 dSP;
2743
2744 PUSHSTACK;
2745
2746 PUSHMARK (SP);
2747 PUTBACK;
2748 call_sv (cb, G_VOID | G_DISCARD);
2749 SPAGAIN;
2750
2751 POPSTACK;
2752}
2753
2754static SV *
2755coro_avp_pop_and_free (pTHX_ AV **avp)
2756{
2757 AV *av = *avp;
2758 SV *res = av_pop (av);
2759
2760 if (AvFILLp (av) < 0)
2761 {
2762 *avp = 0;
2763 SvREFCNT_dec (av);
2764 }
2765
2766 return res;
2767}
2768
2769static void
2770coro_pop_on_enter (pTHX_ void *coro)
2771{
2772 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2773 SvREFCNT_dec (cb);
2774}
2775
2776static void
2777coro_pop_on_leave (pTHX_ void *coro)
2778{
2779 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2780 on_enterleave_call (aTHX_ sv_2mortal (cb));
2781}
2782
2783/*****************************************************************************/
2784/* PerlIO::cede */
2785
2786typedef struct
2787{
2788 PerlIOBuf base;
2789 NV next, every;
2790} PerlIOCede;
2791
2792static IV ecb_cold
2793PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2794{
2795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2796
2797 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2798 self->next = nvtime () + self->every;
2799
2800 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2801}
2802
2803static SV * ecb_cold
2804PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2805{
2806 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2807
2808 return newSVnv (self->every);
2809}
2810
2811static IV
2812PerlIOCede_flush (pTHX_ PerlIO *f)
2813{
2814 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2815 double now = nvtime ();
2816
2817 if (now >= self->next)
2818 {
2819 api_cede (aTHX);
2820 self->next = now + self->every;
2821 }
2822
2823 return PerlIOBuf_flush (aTHX_ f);
2824}
2825
2826static PerlIO_funcs PerlIO_cede =
2827{
2828 sizeof(PerlIO_funcs),
2829 "cede",
2830 sizeof(PerlIOCede),
2831 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2832 PerlIOCede_pushed,
2833 PerlIOBuf_popped,
2834 PerlIOBuf_open,
2835 PerlIOBase_binmode,
2836 PerlIOCede_getarg,
2837 PerlIOBase_fileno,
2838 PerlIOBuf_dup,
2839 PerlIOBuf_read,
2840 PerlIOBuf_unread,
2841 PerlIOBuf_write,
2842 PerlIOBuf_seek,
2843 PerlIOBuf_tell,
2844 PerlIOBuf_close,
2845 PerlIOCede_flush,
2846 PerlIOBuf_fill,
2847 PerlIOBase_eof,
2848 PerlIOBase_error,
2849 PerlIOBase_clearerr,
2850 PerlIOBase_setlinebuf,
2851 PerlIOBuf_get_base,
2852 PerlIOBuf_bufsiz,
2853 PerlIOBuf_get_ptr,
2854 PerlIOBuf_get_cnt,
2855 PerlIOBuf_set_ptrcnt,
2856};
2857
2858/*****************************************************************************/
2859/* Coro::Semaphore & Coro::Signal */
2860
2861static SV *
2862coro_waitarray_new (pTHX_ int count)
2863{
2864 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2865 AV *av = newAV ();
2866 SV **ary;
2867
2868 /* unfortunately, building manually saves memory */
2869 Newx (ary, 2, SV *);
2870 AvALLOC (av) = ary;
2871#if PERL_VERSION_ATLEAST (5,10,0)
2872 AvARRAY (av) = ary;
2873#else
2874 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2875 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2876 SvPVX ((SV *)av) = (char *)ary;
2877#endif
2878 AvMAX (av) = 1;
2879 AvFILLp (av) = 0;
2880 ary [0] = newSViv (count);
2881
2882 return newRV_noinc ((SV *)av);
2883}
2884
2885/* semaphore */
2886
2887static void
2888coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2889{
2890 SV *count_sv = AvARRAY (av)[0];
2891 IV count = SvIVX (count_sv);
2892
2893 count += adjust;
2894 SvIVX (count_sv) = count;
2895
2896 /* now wake up as many waiters as are expected to lock */
2897 while (count > 0 && AvFILLp (av) > 0)
2898 {
2899 SV *cb;
2900
2901 /* swap first two elements so we can shift a waiter */
2902 AvARRAY (av)[0] = AvARRAY (av)[1];
2903 AvARRAY (av)[1] = count_sv;
2904 cb = av_shift (av);
2905
2906 if (SvOBJECT (cb))
2907 {
2908 api_ready (aTHX_ cb);
2909 --count;
2910 }
2911 else if (SvTYPE (cb) == SVt_PVCV)
2912 {
2913 dSP;
2914 PUSHMARK (SP);
2915 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2916 PUTBACK;
2917 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2918 }
2919
2920 SvREFCNT_dec (cb);
2921 }
2922}
2923
2924static void
2925coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2926{
2927 /* call $sem->adjust (0) to possibly wake up some other waiters */
2928 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2929}
2930
2931static int
2932slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2933{
2934 AV *av = (AV *)frame->data;
2935 SV *count_sv = AvARRAY (av)[0];
2936 SV *coro_hv = SvRV (coro_current);
2937
2938 /* if we are about to throw, don't actually acquire the lock, just throw */
2939 if (CORO_THROW)
2940 return 0;
2941 else if (SvIVX (count_sv) > 0)
2942 {
2943 frame->destroy = 0;
2944
2945 if (acquire)
2946 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2947 else
2948 coro_semaphore_adjust (aTHX_ av, 0);
2949
2950 return 0;
2951 }
2952 else
2953 {
2954 int i;
2955 /* if we were woken up but can't down, we look through the whole */
2956 /* waiters list and only add us if we aren't in there already */
2957 /* this avoids some degenerate memory usage cases */
2958 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2959 if (AvARRAY (av)[i] == coro_hv)
2960 return 1;
2961
2962 av_push (av, SvREFCNT_inc (coro_hv));
2963 return 1;
2964 }
2965}
2966
2967static int
2968slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2969{
2970 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2971}
2972
2973static int
2974slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2975{
2976 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2977}
2978
2979static void
2980slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2981{
2982 AV *av = (AV *)SvRV (arg [0]);
2983
2984 if (SvIVX (AvARRAY (av)[0]) > 0)
2985 {
2986 frame->data = (void *)av;
2987 frame->prepare = prepare_nop;
2988 }
2989 else
2990 {
2991 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2992
2993 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2994 frame->prepare = prepare_schedule;
2995 /* to avoid race conditions when a woken-up coro gets terminated */
2996 /* we arrange for a temporary on_destroy that calls adjust (0) */
2997 frame->destroy = coro_semaphore_destroy;
2998 }
2999}
3000
3001static void
3002slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3003{
3004 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3005 frame->check = slf_check_semaphore_down;
3006}
3007
3008static void
3009slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3010{
3011 if (items >= 2)
3012 {
3013 /* callback form */
3014 AV *av = (AV *)SvRV (arg [0]);
3015 SV *cb_cv = s_get_cv_croak (arg [1]);
3016
3017 av_push (av, SvREFCNT_inc_NN (cb_cv));
3018
3019 if (SvIVX (AvARRAY (av)[0]) > 0)
3020 coro_semaphore_adjust (aTHX_ av, 0);
3021
3022 frame->prepare = prepare_nop;
3023 frame->check = slf_check_nop;
3024 }
3025 else
3026 {
3027 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3028 frame->check = slf_check_semaphore_wait;
3029 }
3030}
3031
3032/* signal */
3033
3034static void
3035coro_signal_wake (pTHX_ AV *av, int count)
3036{
3037 SvIVX (AvARRAY (av)[0]) = 0;
3038
3039 /* now signal count waiters */
3040 while (count > 0 && AvFILLp (av) > 0)
3041 {
3042 SV *cb;
3043
3044 /* swap first two elements so we can shift a waiter */
3045 cb = AvARRAY (av)[0];
3046 AvARRAY (av)[0] = AvARRAY (av)[1];
3047 AvARRAY (av)[1] = cb;
3048
3049 cb = av_shift (av);
3050
3051 if (SvTYPE (cb) == SVt_PVCV)
3052 {
3053 dSP;
3054 PUSHMARK (SP);
3055 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3056 PUTBACK;
3057 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3058 }
3059 else
3060 {
3061 api_ready (aTHX_ cb);
3062 sv_setiv (cb, 0); /* signal waiter */
3063 }
3064
3065 SvREFCNT_dec (cb);
3066
3067 --count;
3068 }
3069}
3070
3071static int
3072slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3073{
3074 /* if we are about to throw, also stop waiting */
3075 return SvROK ((SV *)frame->data) && !CORO_THROW;
3076}
3077
3078static void
3079slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3080{
3081 AV *av = (AV *)SvRV (arg [0]);
3082
3083 if (items >= 2)
3084 {
3085 SV *cb_cv = s_get_cv_croak (arg [1]);
3086 av_push (av, SvREFCNT_inc_NN (cb_cv));
3087
3088 if (SvIVX (AvARRAY (av)[0]))
3089 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3090
3091 frame->prepare = prepare_nop;
3092 frame->check = slf_check_nop;
3093 }
3094 else if (SvIVX (AvARRAY (av)[0]))
3095 {
3096 SvIVX (AvARRAY (av)[0]) = 0;
3097 frame->prepare = prepare_nop;
3098 frame->check = slf_check_nop;
3099 }
3100 else
3101 {
3102 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3103
3104 av_push (av, waiter);
3105
3106 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3107 frame->prepare = prepare_schedule;
3108 frame->check = slf_check_signal_wait;
3109 }
3110}
3111
3112/*****************************************************************************/
3113/* Coro::AIO */
3114
3115#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3116
3117/* helper storage struct */
3118struct io_state
3119{
3120 int errorno;
3121 I32 laststype; /* U16 in 5.10.0 */
3122 int laststatval;
3123 Stat_t statcache;
3124};
3125
3126static void
3127coro_aio_callback (pTHX_ CV *cv)
3128{
3129 dXSARGS;
3130 AV *state = (AV *)S_GENSUB_ARG;
3131 SV *coro = av_pop (state);
3132 SV *data_sv = newSV (sizeof (struct io_state));
3133
3134 av_extend (state, items - 1);
3135
3136 sv_upgrade (data_sv, SVt_PV);
3137 SvCUR_set (data_sv, sizeof (struct io_state));
3138 SvPOK_only (data_sv);
3139
3140 {
3141 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3142
3143 data->errorno = errno;
3144 data->laststype = PL_laststype;
3145 data->laststatval = PL_laststatval;
3146 data->statcache = PL_statcache;
3147 }
3148
3149 /* now build the result vector out of all the parameters and the data_sv */
3150 {
3151 int i;
3152
3153 for (i = 0; i < items; ++i)
3154 av_push (state, SvREFCNT_inc_NN (ST (i)));
3155 }
3156
3157 av_push (state, data_sv);
3158
3159 api_ready (aTHX_ coro);
3160 SvREFCNT_dec (coro);
3161 SvREFCNT_dec ((AV *)state);
3162}
3163
3164static int
3165slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3166{
3167 AV *state = (AV *)frame->data;
3168
3169 /* if we are about to throw, return early */
3170 /* this does not cancel the aio request, but at least */
3171 /* it quickly returns */
3172 if (CORO_THROW)
3173 return 0;
3174
3175 /* one element that is an RV? repeat! */
3176 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3177 return 1;
3178
3179 /* restore status */
3180 {
3181 SV *data_sv = av_pop (state);
3182 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3183
3184 errno = data->errorno;
3185 PL_laststype = data->laststype;
3186 PL_laststatval = data->laststatval;
3187 PL_statcache = data->statcache;
3188
3189 SvREFCNT_dec (data_sv);
3190 }
3191
3192 /* push result values */
3193 {
3194 dSP;
3195 int i;
3196
3197 EXTEND (SP, AvFILLp (state) + 1);
3198 for (i = 0; i <= AvFILLp (state); ++i)
3199 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3200
3201 PUTBACK;
3202 }
3203
3204 return 0;
3205}
3206
3207static void
3208slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3209{
3210 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3211 SV *coro_hv = SvRV (coro_current);
3212 struct coro *coro = SvSTATE_hv (coro_hv);
3213
3214 /* put our coroutine id on the state arg */
3215 av_push (state, SvREFCNT_inc_NN (coro_hv));
3216
3217 /* first see whether we have a non-zero priority and set it as AIO prio */
3218 if (coro->prio)
3219 {
3220 dSP;
3221
3222 static SV *prio_cv;
3223 static SV *prio_sv;
3224
3225 if (ecb_expect_false (!prio_cv))
3226 {
3227 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3228 prio_sv = newSViv (0);
3229 }
3230
3231 PUSHMARK (SP);
3232 sv_setiv (prio_sv, coro->prio);
3233 XPUSHs (prio_sv);
3234
3235 PUTBACK;
3236 call_sv (prio_cv, G_VOID | G_DISCARD);
3237 }
3238
3239 /* now call the original request */
3240 {
3241 dSP;
3242 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3243 int i;
3244
3245 PUSHMARK (SP);
3246
3247 /* first push all args to the stack */
3248 EXTEND (SP, items + 1);
3249
3250 for (i = 0; i < items; ++i)
3251 PUSHs (arg [i]);
3252
3253 /* now push the callback closure */
3254 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3255
3256 /* now call the AIO function - we assume our request is uncancelable */
3257 PUTBACK;
3258 call_sv ((SV *)req, G_VOID | G_DISCARD);
3259 }
3260
3261 /* now that the request is going, we loop till we have a result */
3262 frame->data = (void *)state;
3263 frame->prepare = prepare_schedule;
3264 frame->check = slf_check_aio_req;
3265}
3266
3267static void
3268coro_aio_req_xs (pTHX_ CV *cv)
3269{
3270 dXSARGS;
3271
3272 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3273
3274 XSRETURN_EMPTY;
3275}
3276
3277/*****************************************************************************/
3278
3279#if CORO_CLONE
3280# include "clone.c"
3281#endif
3282
3283/*****************************************************************************/
3284
3285static SV *
3286coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3287{
3288 SV *coro_sv;
3289 struct coro *coro;
3290 MAGIC *mg;
3291 HV *hv;
3292 SV *cb;
3293 int i;
3294
3295 if (argc > 0)
3296 {
3297 cb = s_get_cv_croak (argv [0]);
3298
3299 if (!is_coro)
3300 {
3301 if (CvISXSUB (cb))
3302 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3303
3304 if (!CvROOT (cb))
3305 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3306 }
3307 }
3308
3309 Newz (0, coro, 1, struct coro);
3310 coro->args = newAV ();
3311 coro->flags = CF_NEW;
3312
3313 if (coro_first) coro_first->prev = coro;
3314 coro->next = coro_first;
3315 coro_first = coro;
3316
3317 coro->hv = hv = newHV ();
3318 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3319 mg->mg_flags |= MGf_DUP;
3320 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3321
3322 if (argc > 0)
3323 {
3324 av_extend (coro->args, argc + is_coro - 1);
3325
3326 if (is_coro)
3327 {
3328 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3329 cb = (SV *)cv_coro_run;
3330 }
3331
3332 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3333
3334 for (i = 1; i < argc; i++)
3335 av_push (coro->args, newSVsv (argv [i]));
3336 }
3337
3338 return coro_sv;
3339}
3340
3341#ifndef __cplusplus
3342ecb_cold XS(boot_Coro__State);
3343#endif
3344
3345#if CORO_JIT
3346
3347static void ecb_noinline ecb_cold
3348pushav_3uv (pTHX_ UV a, UV b, UV c)
3349{
3350 dSP;
3351 AV *av = newAV ();
3352
3353 av_store (av, 2, newSVuv (c));
3354 av_store (av, 1, newSVuv (b));
3355 av_store (av, 0, newSVuv (a));
3356
3357 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3358
3359 PUTBACK;
3360}
3361
3362static void ecb_noinline ecb_cold
3363jit_init (pTHX)
3364{
3365 dSP;
3366 SV *load, *save;
3367 char *map_base;
3368 char *load_ptr, *save_ptr;
3369 STRLEN load_len, save_len, map_len;
3370 int count;
3371
3372 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3373
3374 PUSHMARK (SP);
3375#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3376# include "state.h"
3377#undef VARx
3378 count = call_pv ("Coro::State::_jit", G_ARRAY);
3379 SPAGAIN;
3380
3381 save = POPs; save_ptr = SvPVbyte (save, save_len);
3382 load = POPs; load_ptr = SvPVbyte (load, load_len);
3383
3384 map_len = load_len + save_len + 16;
3385
3386 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3387
3388 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3389
3390 load_perl_slots = (load_save_perl_slots_type)map_base;
3391 memcpy (map_base, load_ptr, load_len);
3392
3393 map_base += (load_len + 15) & ~15;
3394
3395 save_perl_slots = (load_save_perl_slots_type)map_base;
3396 memcpy (map_base, save_ptr, save_len);
3397
3398 /* we are good citizens and try to make the page read-only, so the evil evil */
3399 /* hackers might have it a bit more difficult */
3400 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3401
3402 PUTBACK;
3403 eval_pv ("undef &Coro::State::_jit", 1);
3404}
3405
3406#endif
3407
1547MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3408MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1548 3409
1549PROTOTYPES: DISABLE 3410PROTOTYPES: DISABLE
1550 3411
1551BOOT: 3412BOOT:
1552{ 3413{
1553#ifdef USE_ITHREADS 3414#ifdef USE_ITHREADS
1554 MUTEX_INIT (&coro_mutex); 3415# if CORO_PTHREAD
3416 coro_thx = PERL_GET_CONTEXT;
3417# endif
1555#endif 3418#endif
1556 BOOT_PAGESIZE; 3419 BOOT_PAGESIZE;
1557 3420
3421 /* perl defines these to check for existance first, but why it doesn't */
3422 /* just create them one at init time is not clear to me, except for */
3423 /* programs trying to delete them, but... */
3424 /* anyway, we declare this as invalid and make sure they are initialised here */
3425 DEFSV;
3426 ERRSV;
3427
3428 cctx_current = cctx_new_empty ();
3429
1558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3430 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3431 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1560 3432
1561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; 3433 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1562 PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3434 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1563 orig_sigelem_set = PL_vtbl_sigelem.svt_set; 3435 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1564 PL_vtbl_sigelem.svt_set = coro_sigelem_set;
1565 3436
1566 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); 3437 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1567 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3438 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1568 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3439 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1569 3440
… …
1578 main_top_env = PL_top_env; 3449 main_top_env = PL_top_env;
1579 3450
1580 while (main_top_env->je_prev) 3451 while (main_top_env->je_prev)
1581 main_top_env = main_top_env->je_prev; 3452 main_top_env = main_top_env->je_prev;
1582 3453
3454 {
3455 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3456
3457 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3458 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3459
3460 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3461 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
3462 }
3463
1583 coroapi.ver = CORO_API_VERSION; 3464 coroapi.ver = CORO_API_VERSION;
1584 coroapi.rev = CORO_API_REVISION; 3465 coroapi.rev = CORO_API_REVISION;
3466
1585 coroapi.transfer = api_transfer; 3467 coroapi.transfer = api_transfer;
1586 3468
3469 coroapi.sv_state = SvSTATE_;
3470 coroapi.execute_slf = api_execute_slf;
3471 coroapi.prepare_nop = prepare_nop;
3472 coroapi.prepare_schedule = prepare_schedule;
3473 coroapi.prepare_cede = prepare_cede;
3474 coroapi.prepare_cede_notself = prepare_cede_notself;
3475
3476 time_init (aTHX);
3477
1587 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3478 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3479#if CORO_JIT
3480 PUTBACK;
3481 jit_init (aTHX);
3482 SPAGAIN;
3483#endif
1588} 3484}
1589 3485
1590SV * 3486SV *
1591new (char *klass, ...) 3487new (SV *klass, ...)
3488 ALIAS:
3489 Coro::new = 1
1592 CODE: 3490 CODE:
1593{ 3491 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1594 struct coro *coro;
1595 MAGIC *mg;
1596 HV *hv;
1597 int i;
1598
1599 Newz (0, coro, 1, struct coro);
1600 coro->args = newAV ();
1601 coro->flags = CF_NEW;
1602
1603 if (coro_first) coro_first->prev = coro;
1604 coro->next = coro_first;
1605 coro_first = coro;
1606
1607 coro->hv = hv = newHV ();
1608 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1609 mg->mg_flags |= MGf_DUP;
1610 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1611
1612 av_extend (coro->args, items - 1);
1613 for (i = 1; i < items; i++)
1614 av_push (coro->args, newSVsv (ST (i)));
1615}
1616 OUTPUT:
1617 RETVAL
1618
1619# these not obviously related functions are all rolled into the same xs
1620# function to increase chances that they all will call transfer with the same
1621# stack offset
1622void
1623_set_stacklevel (...)
1624 ALIAS:
1625 Coro::State::transfer = 1
1626 Coro::schedule = 2
1627 Coro::cede = 3
1628 Coro::cede_notself = 4
1629 CODE:
1630{
1631 struct transfer_args ta;
1632
1633 PUTBACK;
1634 switch (ix)
1635 {
1636 case 0:
1637 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1638 ta.next = 0;
1639 break;
1640
1641 case 1:
1642 if (items != 2)
1643 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1644
1645 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1646 break;
1647
1648 case 2:
1649 prepare_schedule (aTHX_ &ta);
1650 break;
1651
1652 case 3:
1653 prepare_cede (aTHX_ &ta);
1654 break;
1655
1656 case 4:
1657 if (!prepare_cede_notself (aTHX_ &ta))
1658 XSRETURN_EMPTY;
1659
1660 break;
1661 }
1662 SPAGAIN;
1663
1664 BARRIER;
1665 PUTBACK;
1666 TRANSFER (ta);
1667 SPAGAIN; /* might be the sp of a different coroutine now */
1668 /* be extra careful not to ever do anything after TRANSFER */
1669}
1670
1671bool
1672_destroy (SV *coro_sv)
1673 CODE:
1674 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1675 OUTPUT: 3492 OUTPUT:
1676 RETVAL 3493 RETVAL
1677 3494
1678void 3495void
3496transfer (...)
3497 PROTOTYPE: $$
3498 CODE:
3499 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3500
3501void
1679_exit (code) 3502_exit (int code)
1680 int code
1681 PROTOTYPE: $ 3503 PROTOTYPE: $
1682 CODE: 3504 CODE:
1683 _exit (code); 3505 _exit (code);
1684 3506
3507SV *
3508clone (Coro::State coro)
3509 CODE:
3510{
3511#if CORO_CLONE
3512 struct coro *ncoro = coro_clone (aTHX_ coro);
3513 MAGIC *mg;
3514 /* TODO: too much duplication */
3515 ncoro->hv = newHV ();
3516 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3517 mg->mg_flags |= MGf_DUP;
3518 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3519#else
3520 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3521#endif
3522}
3523 OUTPUT:
3524 RETVAL
3525
1685int 3526int
1686cctx_stacksize (int new_stacksize = 0) 3527cctx_stacksize (int new_stacksize = 0)
3528 PROTOTYPE: ;$
1687 CODE: 3529 CODE:
1688 RETVAL = coro_stacksize; 3530 RETVAL = cctx_stacksize;
1689 if (new_stacksize) 3531 if (new_stacksize)
3532 {
1690 coro_stacksize = new_stacksize; 3533 cctx_stacksize = new_stacksize;
3534 ++cctx_gen;
3535 }
1691 OUTPUT: 3536 OUTPUT:
1692 RETVAL 3537 RETVAL
1693 3538
1694int 3539int
3540cctx_max_idle (int max_idle = 0)
3541 PROTOTYPE: ;$
3542 CODE:
3543 RETVAL = cctx_max_idle;
3544 if (max_idle > 1)
3545 cctx_max_idle = max_idle;
3546 OUTPUT:
3547 RETVAL
3548
3549int
1695cctx_count () 3550cctx_count ()
3551 PROTOTYPE:
1696 CODE: 3552 CODE:
1697 RETVAL = cctx_count; 3553 RETVAL = cctx_count;
1698 OUTPUT: 3554 OUTPUT:
1699 RETVAL 3555 RETVAL
1700 3556
1701int 3557int
1702cctx_idle () 3558cctx_idle ()
3559 PROTOTYPE:
1703 CODE: 3560 CODE:
1704 RETVAL = cctx_idle; 3561 RETVAL = cctx_idle;
1705 OUTPUT: 3562 OUTPUT:
1706 RETVAL 3563 RETVAL
1707 3564
1708void 3565void
1709list () 3566list ()
3567 PROTOTYPE:
1710 PPCODE: 3568 PPCODE:
1711{ 3569{
1712 struct coro *coro; 3570 struct coro *coro;
1713 for (coro = coro_first; coro; coro = coro->next) 3571 for (coro = coro_first; coro; coro = coro->next)
1714 if (coro->hv) 3572 if (coro->hv)
… …
1719call (Coro::State coro, SV *coderef) 3577call (Coro::State coro, SV *coderef)
1720 ALIAS: 3578 ALIAS:
1721 eval = 1 3579 eval = 1
1722 CODE: 3580 CODE:
1723{ 3581{
1724 if (coro->mainstack) 3582 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1725 { 3583 {
1726 struct coro temp; 3584 struct coro *current = SvSTATE_current;
3585 struct CoroSLF slf_save;
1727 3586
1728 if (!(coro->flags & CF_RUNNING)) 3587 if (current != coro)
1729 { 3588 {
1730 PUTBACK; 3589 PUTBACK;
1731 save_perl (aTHX_ &temp); 3590 save_perl (aTHX_ current);
1732 load_perl (aTHX_ coro); 3591 load_perl (aTHX_ coro);
3592 /* the coro is most likely in an active SLF call.
3593 * while not strictly required (the code we execute is
3594 * not allowed to call any SLF functions), it's cleaner
3595 * to reinitialise the slf_frame and restore it later.
3596 * This might one day allow us to actually do SLF calls
3597 * from code executed here.
3598 */
3599 slf_save = slf_frame;
3600 slf_frame.prepare = 0;
3601 SPAGAIN;
1733 } 3602 }
1734 3603
1735 {
1736 dSP;
1737 ENTER;
1738 SAVETMPS;
1739 PUTBACK;
1740 PUSHSTACK; 3604 PUSHSTACK;
3605
1741 PUSHMARK (SP); 3606 PUSHMARK (SP);
3607 PUTBACK;
1742 3608
1743 if (ix) 3609 if (ix)
1744 eval_sv (coderef, 0); 3610 eval_sv (coderef, 0);
1745 else 3611 else
1746 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3612 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1747 3613
1748 POPSTACK; 3614 POPSTACK;
1749 SPAGAIN; 3615 SPAGAIN;
1750 FREETMPS;
1751 LEAVE;
1752 PUTBACK;
1753 }
1754 3616
1755 if (!(coro->flags & CF_RUNNING)) 3617 if (current != coro)
1756 { 3618 {
3619 PUTBACK;
3620 slf_frame = slf_save;
1757 save_perl (aTHX_ coro); 3621 save_perl (aTHX_ coro);
1758 load_perl (aTHX_ &temp); 3622 load_perl (aTHX_ current);
1759 SPAGAIN; 3623 SPAGAIN;
1760 } 3624 }
1761 } 3625 }
1762} 3626}
1763 3627
… …
1766 PROTOTYPE: $ 3630 PROTOTYPE: $
1767 ALIAS: 3631 ALIAS:
1768 is_ready = CF_READY 3632 is_ready = CF_READY
1769 is_running = CF_RUNNING 3633 is_running = CF_RUNNING
1770 is_new = CF_NEW 3634 is_new = CF_NEW
1771 is_destroyed = CF_DESTROYED 3635 is_destroyed = CF_ZOMBIE
3636 is_zombie = CF_ZOMBIE
3637 is_suspended = CF_SUSPENDED
1772 CODE: 3638 CODE:
1773 RETVAL = boolSV (coro->flags & ix); 3639 RETVAL = boolSV (coro->flags & ix);
1774 OUTPUT: 3640 OUTPUT:
1775 RETVAL 3641 RETVAL
1776 3642
1777void 3643void
3644throw (Coro::State self, SV *exception = &PL_sv_undef)
3645 PROTOTYPE: $;$
3646 CODE:
3647{
3648 struct coro *current = SvSTATE_current;
3649 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3650 SvREFCNT_dec (*exceptionp);
3651 SvGETMAGIC (exception);
3652 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3653}
3654
3655void
1778api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3656api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3657 PROTOTYPE: $;$
3658 C_ARGS: aTHX_ coro, flags
1779 3659
1780SV * 3660SV *
1781has_stack (Coro::State coro) 3661has_cctx (Coro::State coro)
1782 PROTOTYPE: $ 3662 PROTOTYPE: $
1783 CODE: 3663 CODE:
1784 RETVAL = boolSV (!!coro->cctx); 3664 /* maybe manage the running flag differently */
3665 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1785 OUTPUT: 3666 OUTPUT:
1786 RETVAL 3667 RETVAL
1787 3668
1788int 3669int
1789is_traced (Coro::State coro) 3670is_traced (Coro::State coro)
… …
1791 CODE: 3672 CODE:
1792 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3673 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1793 OUTPUT: 3674 OUTPUT:
1794 RETVAL 3675 RETVAL
1795 3676
1796IV 3677UV
1797rss (Coro::State coro) 3678rss (Coro::State coro)
1798 PROTOTYPE: $ 3679 PROTOTYPE: $
1799 ALIAS: 3680 ALIAS:
1800 usecount = 1 3681 usecount = 1
1801 CODE: 3682 CODE:
… …
1805 case 1: RETVAL = coro->usecount; break; 3686 case 1: RETVAL = coro->usecount; break;
1806 } 3687 }
1807 OUTPUT: 3688 OUTPUT:
1808 RETVAL 3689 RETVAL
1809 3690
3691void
3692force_cctx ()
3693 PROTOTYPE:
3694 CODE:
3695 cctx_current->idle_sp = 0;
3696
3697void
3698swap_defsv (Coro::State self)
3699 PROTOTYPE: $
3700 ALIAS:
3701 swap_defav = 1
3702 CODE:
3703 if (!self->slot)
3704 croak ("cannot swap state with coroutine that has no saved state,");
3705 else
3706 {
3707 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3708 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3709
3710 SV *tmp = *src; *src = *dst; *dst = tmp;
3711 }
3712
3713void
3714cancel (Coro::State self)
3715 CODE:
3716 coro_state_destroy (aTHX_ self);
3717
3718SV *
3719enable_times (int enabled = enable_times)
3720 CODE:
3721{
3722 RETVAL = boolSV (enable_times);
3723
3724 if (enabled != enable_times)
3725 {
3726 enable_times = enabled;
3727
3728 coro_times_update ();
3729 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3730 }
3731}
3732 OUTPUT:
3733 RETVAL
3734
3735void
3736times (Coro::State self)
3737 PPCODE:
3738{
3739 struct coro *current = SvSTATE (coro_current);
3740
3741 if (ecb_expect_false (current == self))
3742 {
3743 coro_times_update ();
3744 coro_times_add (SvSTATE (coro_current));
3745 }
3746
3747 EXTEND (SP, 2);
3748 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3749 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3750
3751 if (ecb_expect_false (current == self))
3752 coro_times_sub (SvSTATE (coro_current));
3753}
3754
3755void
3756swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3757 CODE:
3758{
3759 struct coro *current = SvSTATE_current;
3760
3761 if (current == coro)
3762 SWAP_SVS (current);
3763
3764 if (!coro->swap_sv)
3765 coro->swap_sv = newAV ();
3766
3767 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3768 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3769
3770 if (current == coro)
3771 SWAP_SVS (current);
3772}
3773
1810 3774
1811MODULE = Coro::State PACKAGE = Coro 3775MODULE = Coro::State PACKAGE = Coro
1812 3776
1813BOOT: 3777BOOT:
1814{ 3778{
1815 int i;
1816
1817 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3779 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1818 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3780 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3781 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3782 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1819 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3783 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3784 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3785 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3786 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1820 3787
1821 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3788 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1822 SvREADONLY_on (coro_current); 3789 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
1823 3790 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3791 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3792
1824 coro_stash = gv_stashpv ("Coro", TRUE); 3793 coro_stash = gv_stashpv ("Coro", TRUE);
1825 3794
1826 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3795 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1827 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3796 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1828 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3797 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1829 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3798 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1830 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3799 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1831 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3800 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1832
1833 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1834 coro_ready[i] = newAV ();
1835 3801
1836 { 3802 {
1837 SV *sv = perl_get_sv ("Coro::API", TRUE); 3803 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1838 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1839 3804
1840 coroapi.schedule = api_schedule; 3805 coroapi.schedule = api_schedule;
3806 coroapi.schedule_to = api_schedule_to;
1841 coroapi.cede = api_cede; 3807 coroapi.cede = api_cede;
1842 coroapi.cede_notself = api_cede_notself; 3808 coroapi.cede_notself = api_cede_notself;
1843 coroapi.ready = api_ready; 3809 coroapi.ready = api_ready;
1844 coroapi.is_ready = api_is_ready; 3810 coroapi.is_ready = api_is_ready;
1845 coroapi.nready = &coro_nready; 3811 coroapi.nready = coro_nready;
1846 coroapi.current = coro_current; 3812 coroapi.current = coro_current;
1847 3813
1848 GCoroAPI = &coroapi; 3814 /*GCoroAPI = &coroapi;*/
1849 sv_setiv (sv, (IV)&coroapi); 3815 sv_setiv (sv, (IV)&coroapi);
1850 SvREADONLY_on (sv); 3816 SvREADONLY_on (sv);
1851 } 3817 }
1852} 3818}
3819
3820SV *
3821async (...)
3822 PROTOTYPE: &@
3823 CODE:
3824 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3825 api_ready (aTHX_ RETVAL);
3826 OUTPUT:
3827 RETVAL
3828
3829void
3830_destroy (Coro::State coro)
3831 CODE:
3832 /* used by the manager thread */
3833 coro_state_destroy (aTHX_ coro);
3834
3835void
3836on_destroy (Coro::State coro, SV *cb)
3837 CODE:
3838 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3839
3840void
3841join (...)
3842 CODE:
3843 CORO_EXECUTE_SLF_XS (slf_init_join);
3844
3845void
3846terminate (...)
3847 CODE:
3848 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3849
3850void
3851cancel (...)
3852 CODE:
3853 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3854
3855int
3856safe_cancel (Coro::State self, ...)
3857 C_ARGS: aTHX_ self, &ST (1), items - 1
3858
3859void
3860schedule (...)
3861 CODE:
3862 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3863
3864void
3865schedule_to (...)
3866 CODE:
3867 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3868
3869void
3870cede_to (...)
3871 CODE:
3872 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3873
3874void
3875cede (...)
3876 CODE:
3877 CORO_EXECUTE_SLF_XS (slf_init_cede);
3878
3879void
3880cede_notself (...)
3881 CODE:
3882 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1853 3883
1854void 3884void
1855_set_current (SV *current) 3885_set_current (SV *current)
1856 PROTOTYPE: $ 3886 PROTOTYPE: $
1857 CODE: 3887 CODE:
1858 SvREFCNT_dec (SvRV (coro_current)); 3888 SvREFCNT_dec (SvRV (coro_current));
1859 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3889 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3890
3891void
3892_set_readyhook (SV *hook)
3893 PROTOTYPE: $
3894 CODE:
3895 SvREFCNT_dec (coro_readyhook);
3896 SvGETMAGIC (hook);
3897 if (SvOK (hook))
3898 {
3899 coro_readyhook = newSVsv (hook);
3900 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3901 }
3902 else
3903 {
3904 coro_readyhook = 0;
3905 CORO_READYHOOK = 0;
3906 }
1860 3907
1861int 3908int
1862prio (Coro::State coro, int newprio = 0) 3909prio (Coro::State coro, int newprio = 0)
3910 PROTOTYPE: $;$
1863 ALIAS: 3911 ALIAS:
1864 nice = 1 3912 nice = 1
1865 CODE: 3913 CODE:
1866{ 3914{
1867 RETVAL = coro->prio; 3915 RETVAL = coro->prio;
… …
1869 if (items > 1) 3917 if (items > 1)
1870 { 3918 {
1871 if (ix) 3919 if (ix)
1872 newprio = coro->prio - newprio; 3920 newprio = coro->prio - newprio;
1873 3921
1874 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3922 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1875 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3923 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1876 3924
1877 coro->prio = newprio; 3925 coro->prio = newprio;
1878 } 3926 }
1879} 3927}
1880 OUTPUT: 3928 OUTPUT:
… …
1882 3930
1883SV * 3931SV *
1884ready (SV *self) 3932ready (SV *self)
1885 PROTOTYPE: $ 3933 PROTOTYPE: $
1886 CODE: 3934 CODE:
1887 RETVAL = boolSV (api_ready (self)); 3935 RETVAL = boolSV (api_ready (aTHX_ self));
1888 OUTPUT: 3936 OUTPUT:
1889 RETVAL 3937 RETVAL
1890 3938
1891int 3939int
1892nready (...) 3940nready (...)
… …
1895 RETVAL = coro_nready; 3943 RETVAL = coro_nready;
1896 OUTPUT: 3944 OUTPUT:
1897 RETVAL 3945 RETVAL
1898 3946
1899void 3947void
1900throw (Coro::State self, SV *throw = &PL_sv_undef) 3948suspend (Coro::State self)
1901 PROTOTYPE: $;$ 3949 PROTOTYPE: $
1902 CODE: 3950 CODE:
1903 SvREFCNT_dec (self->throw); 3951 self->flags |= CF_SUSPENDED;
1904 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1905 3952
1906# for async_pool speedup
1907void 3953void
1908_pool_1 (SV *cb) 3954resume (Coro::State self)
3955 PROTOTYPE: $
1909 CODE: 3956 CODE:
1910{ 3957 self->flags &= ~CF_SUSPENDED;
1911 struct coro *coro = SvSTATE (coro_current);
1912 HV *hv = (HV *)SvRV (coro_current);
1913 AV *defav = GvAV (PL_defgv);
1914 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1915 AV *invoke_av;
1916 int i, len;
1917 3958
1918 if (!invoke) 3959void
3960_pool_handler (...)
3961 CODE:
3962 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3963
3964void
3965async_pool (SV *cv, ...)
3966 PROTOTYPE: &@
3967 PPCODE:
3968{
3969 HV *hv = (HV *)av_pop (av_async_pool);
3970 AV *av = newAV ();
3971 SV *cb = ST (0);
3972 int i;
3973
3974 av_extend (av, items - 2);
3975 for (i = 1; i < items; ++i)
3976 av_push (av, SvREFCNT_inc_NN (ST (i)));
3977
3978 if ((SV *)hv == &PL_sv_undef)
1919 { 3979 {
1920 SvREFCNT_dec (PL_diehook); PL_diehook = 0; 3980 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
1921 croak ("\3async_pool terminate\2\n"); 3981 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3982 SvREFCNT_dec (sv);
1922 } 3983 }
1923 3984
1924 SvREFCNT_dec (coro->saved_deffh);
1925 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
1926
1927 hv_store (hv, "desc", sizeof ("desc") - 1,
1928 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929
1930 invoke_av = (AV *)SvRV (invoke);
1931 len = av_len (invoke_av);
1932
1933 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934
1935 if (len > 0)
1936 { 3985 {
1937 av_fill (defav, len - 1); 3986 struct coro *coro = SvSTATE_hv (hv);
1938 for (i = 0; i < len; ++i) 3987
1939 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3988 assert (!coro->invoke_cb);
3989 assert (!coro->invoke_av);
3990 coro->invoke_cb = SvREFCNT_inc (cb);
3991 coro->invoke_av = av;
1940 } 3992 }
1941 3993
3994 api_ready (aTHX_ (SV *)hv);
3995
3996 if (GIMME_V != G_VOID)
3997 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3998 else
1942 SvREFCNT_dec (invoke); 3999 SvREFCNT_dec (hv);
1943} 4000}
1944 4001
1945void 4002SV *
1946_pool_2 (SV *cb) 4003rouse_cb ()
4004 PROTOTYPE:
1947 CODE: 4005 CODE:
1948{ 4006 RETVAL = coro_new_rouse_cb (aTHX);
1949 struct coro *coro = SvSTATE (coro_current);
1950
1951 sv_setsv (cb, &PL_sv_undef);
1952
1953 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954 coro->saved_deffh = 0;
1955
1956 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1957 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1958 {
1959 SvREFCNT_dec (PL_diehook); PL_diehook = 0;
1960 croak ("\3async_pool terminate\2\n");
1961 }
1962
1963 av_clear (GvAV (PL_defgv));
1964 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1965 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1966
1967 coro->prio = 0;
1968
1969 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1970 api_trace (coro_current, 0);
1971
1972 av_push (av_async_pool, newSVsv (coro_current));
1973}
1974
1975
1976MODULE = Coro::State PACKAGE = Coro::AIO
1977
1978SV *
1979_get_state ()
1980 CODE:
1981{
1982 struct io_state *data;
1983
1984 RETVAL = newSV (sizeof (struct io_state));
1985 data = (struct io_state *)SvPVX (RETVAL);
1986 SvCUR_set (RETVAL, sizeof (struct io_state));
1987 SvPOK_only (RETVAL);
1988
1989 data->errorno = errno;
1990 data->laststype = PL_laststype;
1991 data->laststatval = PL_laststatval;
1992 data->statcache = PL_statcache;
1993}
1994 OUTPUT: 4007 OUTPUT:
1995 RETVAL 4008 RETVAL
1996 4009
1997void 4010void
1998_set_state (char *data_) 4011rouse_wait (...)
4012 PROTOTYPE: ;$
4013 PPCODE:
4014 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4015
4016void
4017on_enter (SV *block)
4018 ALIAS:
4019 on_leave = 1
1999 PROTOTYPE: $ 4020 PROTOTYPE: &
2000 CODE: 4021 CODE:
2001{ 4022{
2002 struct io_state *data = (void *)data_; 4023 struct coro *coro = SvSTATE_current;
4024 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2003 4025
2004 errno = data->errorno; 4026 block = s_get_cv_croak (block);
2005 PL_laststype = data->laststype;
2006 PL_laststatval = data->laststatval;
2007 PL_statcache = data->statcache;
2008}
2009 4027
4028 if (!*avp)
4029 *avp = newAV ();
4030
4031 av_push (*avp, SvREFCNT_inc (block));
4032
4033 if (!ix)
4034 on_enterleave_call (aTHX_ block);
4035
4036 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4037 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4038 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4039}
4040
4041
4042MODULE = Coro::State PACKAGE = PerlIO::cede
4043
4044BOOT:
4045 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4046
4047
4048MODULE = Coro::State PACKAGE = Coro::Semaphore
4049
4050SV *
4051new (SV *klass, SV *count = 0)
4052 CODE:
4053{
4054 int semcnt = 1;
4055
4056 if (count)
4057 {
4058 SvGETMAGIC (count);
4059
4060 if (SvOK (count))
4061 semcnt = SvIV (count);
4062 }
4063
4064 RETVAL = sv_bless (
4065 coro_waitarray_new (aTHX_ semcnt),
4066 GvSTASH (CvGV (cv))
4067 );
4068}
4069 OUTPUT:
4070 RETVAL
4071
4072# helper for Coro::Channel and others
4073SV *
4074_alloc (int count)
4075 CODE:
4076 RETVAL = coro_waitarray_new (aTHX_ count);
4077 OUTPUT:
4078 RETVAL
4079
4080SV *
4081count (SV *self)
4082 CODE:
4083 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4084 OUTPUT:
4085 RETVAL
4086
4087void
4088up (SV *self, int adjust = 1)
4089 ALIAS:
4090 adjust = 1
4091 CODE:
4092 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4093
4094void
4095down (...)
4096 CODE:
4097 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4098
4099void
4100wait (...)
4101 CODE:
4102 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4103
4104void
4105try (SV *self)
4106 PPCODE:
4107{
4108 AV *av = (AV *)SvRV (self);
4109 SV *count_sv = AvARRAY (av)[0];
4110 IV count = SvIVX (count_sv);
4111
4112 if (count > 0)
4113 {
4114 --count;
4115 SvIVX (count_sv) = count;
4116 XSRETURN_YES;
4117 }
4118 else
4119 XSRETURN_NO;
4120}
4121
4122void
4123waiters (SV *self)
4124 PPCODE:
4125{
4126 AV *av = (AV *)SvRV (self);
4127 int wcount = AvFILLp (av) + 1 - 1;
4128
4129 if (GIMME_V == G_SCALAR)
4130 XPUSHs (sv_2mortal (newSViv (wcount)));
4131 else
4132 {
4133 int i;
4134 EXTEND (SP, wcount);
4135 for (i = 1; i <= wcount; ++i)
4136 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4137 }
4138}
4139
4140MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4141
4142void
4143_may_delete (SV *sem, int count, int extra_refs)
4144 PPCODE:
4145{
4146 AV *av = (AV *)SvRV (sem);
4147
4148 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4149 && AvFILLp (av) == 0 /* no waiters, just count */
4150 && SvIV (AvARRAY (av)[0]) == count)
4151 XSRETURN_YES;
4152
4153 XSRETURN_NO;
4154}
4155
4156MODULE = Coro::State PACKAGE = Coro::Signal
4157
4158SV *
4159new (SV *klass)
4160 CODE:
4161 RETVAL = sv_bless (
4162 coro_waitarray_new (aTHX_ 0),
4163 GvSTASH (CvGV (cv))
4164 );
4165 OUTPUT:
4166 RETVAL
4167
4168void
4169wait (...)
4170 CODE:
4171 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4172
4173void
4174broadcast (SV *self)
4175 CODE:
4176{
4177 AV *av = (AV *)SvRV (self);
4178 coro_signal_wake (aTHX_ av, AvFILLp (av));
4179}
4180
4181void
4182send (SV *self)
4183 CODE:
4184{
4185 AV *av = (AV *)SvRV (self);
4186
4187 if (AvFILLp (av))
4188 coro_signal_wake (aTHX_ av, 1);
4189 else
4190 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4191}
4192
4193IV
4194awaited (SV *self)
4195 CODE:
4196 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4197 OUTPUT:
4198 RETVAL
4199
4200
4201MODULE = Coro::State PACKAGE = Coro::AnyEvent
4202
4203BOOT:
4204 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4205
4206void
4207_schedule (...)
4208 CODE:
4209{
4210 static int incede;
4211
4212 api_cede_notself (aTHX);
4213
4214 ++incede;
4215 while (coro_nready >= incede && api_cede (aTHX))
4216 ;
4217
4218 sv_setsv (sv_activity, &PL_sv_undef);
4219 if (coro_nready >= incede)
4220 {
4221 PUSHMARK (SP);
4222 PUTBACK;
4223 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4224 }
4225
4226 --incede;
4227}
4228
4229
4230MODULE = Coro::State PACKAGE = Coro::AIO
4231
4232void
4233_register (char *target, char *proto, SV *req)
4234 CODE:
4235{
4236 SV *req_cv = s_get_cv_croak (req);
4237 /* newXSproto doesn't return the CV on 5.8 */
4238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4239 sv_setpv ((SV *)slf_cv, proto);
4240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4241}
4242
4243MODULE = Coro::State PACKAGE = Coro::Select
4244
4245void
4246patch_pp_sselect ()
4247 CODE:
4248 if (!coro_old_pp_sselect)
4249 {
4250 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4251 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4252 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4253 }
4254
4255void
4256unpatch_pp_sselect ()
4257 CODE:
4258 if (coro_old_pp_sselect)
4259 {
4260 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4261 coro_old_pp_sselect = 0;
4262 }
4263

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