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Comparing Coro/Coro/State.xs (file contents):
Revision 1.284 by root, Mon Nov 17 01:05:47 2008 UTC vs.
Revision 1.416 by root, Mon Dec 12 15:19:56 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"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#if HAVE_MMAP
27# include <unistd.h> 39# include <unistd.h>
28# include <sys/mman.h> 40# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 42# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 70#endif
105 71
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
108#endif 74#endif
… …
117#endif 83#endif
118 84
119/* The next macros try to return the current stack pointer, in an as 85/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 86 * portable way as possible. */
121#if __GNUC__ >= 4 87#if __GNUC__ >= 4
88# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 89# define STACKLEVEL __builtin_frame_address (0)
123#else 90#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
92# define STACKLEVEL ((void *)&stacklevel)
125#endif 93#endif
126 94
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 96
144#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
145 99
146#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
147# if CORO_PTHREAD 101# if CORO_PTHREAD
148static void *coro_thx; 102static void *coro_thx;
149# endif 103# endif
150#endif 104#endif
151 105
152/* helper storage struct for Coro::AIO */ 106/* used in state.h */
153struct io_state 107#define VAR(name,type) VARx(name, PL_ ## name, type)
154{ 108
155 AV *res; 109#ifdef __linux
156 int errorno; 110# include <time.h> /* for timespec */
157 I32 laststype; /* U16 in 5.10.0 */ 111# include <syscall.h> /* for SYS_* */
158 int laststatval; 112# ifdef SYS_clock_gettime
159 Stat_t statcache; 113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160}; 114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
161 118
162static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
121
122/* we hijack an hopefully unused CV flag for our purposes */
123#define CVf_SLF 0x4000
124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
163 126
164static U32 cctx_gen; 127static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 131static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
172static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 141static SV *rv_diehook;
175static SV *rv_warnhook; 142static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
177 144
178/* async_pool helper stuff */ 145/* async_pool helper stuff */
179static SV *sv_pool_rss; 146static SV *sv_pool_rss;
180static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
182 152
183/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
184static SV *sv_activity; 154static SV *sv_activity;
185 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
186static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
188 164
189enum { 165enum
166{
190 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
204 void *sptr; 181 void *sptr;
205 size_t ssize; 182 size_t ssize;
206 183
207 /* cpu state */ 184 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
186#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 187 JMPENV *idle_te; /* same as idle_sp, but for top_env */
188#endif
210 JMPENV *top_env; 189 JMPENV *top_env;
211 coro_context cctx; 190 coro_context cctx;
212 191
213 U32 gen; 192 U32 gen;
214#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
215 int valgrind_id; 194 int valgrind_id;
216#endif 195#endif
217 unsigned char flags; 196 unsigned char flags;
218} coro_cctx; 197} coro_cctx;
219 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
220enum { 205enum
206{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 218#define VARx(name,expr,type) type name;
235# include "state.h" 219# include "state.h"
236#undef VAR 220#undef VARx
237} perl_slots; 221} perl_slots;
238 222
223/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 225
241/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
242struct coro { 227struct coro
228{
243 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 230 coro_cctx *cctx;
245 231
246 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 237 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
250 239
240 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 244
257 /* statistics */ 245 /* statistics */
258 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
259 247
260 /* coro process data */ 248 /* coro process data */
261 int prio; 249 int prio;
262 SV *throw; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
263 254
264 /* async_pool */ 255 /* async_pool */
265 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
266 269
267 /* linked list */ 270 /* linked list */
268 struct coro *next, *prev; 271 struct coro *next, *prev;
269}; 272};
270 273
271typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
273 276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
275 281
276/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
277 283
278#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
284 290
285/* for Coro.pm */ 291/* for Coro.pm */
286static SV *coro_current; 292static SV *coro_current;
287static SV *coro_readyhook; 293static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run;
289static struct coro *coro_first; 296static struct coro *coro_first;
290#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
291 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have HAVE_MMAP though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if __x86_64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
292/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
293 395
294static SV * 396static SV * ecb_noinline
295coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
296{ 398{
297#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create); 401 get_sv (name, create);
300#endif 402#endif
301 return get_sv (name, create); 403 return get_sv (name, create);
302} 404}
303 405
304static AV * 406static AV * ecb_noinline
305coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
306{ 408{
307#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create); 411 get_av (name, create);
310#endif 412#endif
311 return get_av (name, create); 413 return get_av (name, create);
312} 414}
313 415
314static HV * 416static HV * ecb_noinline
315coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
316{ 418{
317#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create); 421 get_hv (name, create);
320#endif 422#endif
321 return get_hv (name, create); 423 return get_hv (name, create);
322} 424}
323 425
324static AV * 426ecb_inline void
427coro_times_update (void)
428{
429#ifdef coro_clock_gettime
430 struct timespec ts;
431
432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro))
513 coro = SvRV (coro);
514
515 mg = SvSTATEhv_p (aTHX_ coro);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline AV *
325coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
326{ 533{
327 AV *padlist = CvPADLIST (cv); 534 AV *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 535 AV *newpadlist, *newpad;
329 536
330 newpadlist = newAV (); 537 newpadlist = newAV ();
… …
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 542 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif 543#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 544 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist); 545 --AvFILLp (padlist);
339 546
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 547 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
341 av_store (newpadlist, 1, (SV *)newpad); 548 av_store (newpadlist, 1, (SV *)newpad);
342 549
343 return newpadlist; 550 return newpadlist;
344} 551}
345 552
346static void 553ecb_inline void
347free_padlist (pTHX_ AV *padlist) 554free_padlist (pTHX_ AV *padlist)
348{ 555{
349 /* may be during global destruction */ 556 /* may be during global destruction */
350 if (SvREFCNT (padlist)) 557 if (!IN_DESTRUCT)
351 { 558 {
352 I32 i = AvFILLp (padlist); 559 I32 i = AvFILLp (padlist);
353 while (i >= 0) 560
561 while (i > 0) /* special-case index 0 */
354 { 562 {
355 SV **svp = av_fetch (padlist, i--, FALSE); 563 /* we try to be extra-careful here */
356 if (svp) 564 AV *av = (AV *)AvARRAY (padlist)[i--];
357 { 565 I32 j = AvFILLp (av);
358 SV *sv; 566
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 567 while (j >= 0)
568 SvREFCNT_dec (AvARRAY (av)[j--]);
569
570 AvFILLp (av) = -1;
360 SvREFCNT_dec (sv); 571 SvREFCNT_dec (av);
361
362 SvREFCNT_dec (*svp);
363 }
364 } 572 }
365 573
574 SvREFCNT_dec (AvARRAY (padlist)[0]);
575
576 AvFILLp (padlist) = -1;
366 SvREFCNT_dec ((SV*)padlist); 577 SvREFCNT_dec ((SV*)padlist);
367 } 578 }
368} 579}
369 580
370static int 581static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 582coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 583{
373 AV *padlist; 584 AV *padlist;
374 AV *av = (AV *)mg->mg_obj; 585 AV *av = (AV *)mg->mg_obj;
586
587 /* perl manages to free our internal AV and _then_ call us */
588 if (IN_DESTRUCT)
589 return 0;
375 590
376 /* casting is fun. */ 591 /* casting is fun. */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 592 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
378 free_padlist (aTHX_ padlist); 593 free_padlist (aTHX_ padlist);
379 594
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 595 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 596
382 return 0; 597 return 0;
383} 598}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 599
388static MGVTBL coro_cv_vtbl = { 600static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 601 0, 0, 0, 0,
390 coro_cv_free 602 coro_cv_free
391}; 603};
392 604
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
442/* the next two functions merely cache the padlists */ 605/* the next two functions merely cache the padlists */
443static void 606ecb_inline void
444get_padlist (pTHX_ CV *cv) 607get_padlist (pTHX_ CV *cv)
445{ 608{
446 MAGIC *mg = CORO_MAGIC_cv (cv); 609 MAGIC *mg = CORO_MAGIC_cv (cv);
447 AV *av; 610 AV *av;
448 611
449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 612 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 613 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
451 else 614 else
452 { 615 {
453#if CORO_PREFER_PERL_FUNCTIONS 616#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 617 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 618 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 619 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 620 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 621 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 622 SvREFCNT_dec (cp);
460#else 623#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 624 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 625#endif
463 } 626 }
464} 627}
465 628
466static void 629ecb_inline void
467put_padlist (pTHX_ CV *cv) 630put_padlist (pTHX_ CV *cv)
468{ 631{
469 MAGIC *mg = CORO_MAGIC_cv (cv); 632 MAGIC *mg = CORO_MAGIC_cv (cv);
470 AV *av; 633 AV *av;
471 634
472 if (expect_false (!mg)) 635 if (ecb_expect_false (!mg))
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 636 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
474 637
475 av = (AV *)mg->mg_obj; 638 av = (AV *)mg->mg_obj;
476 639
477 if (expect_false (AvFILLp (av) >= AvMAX (av))) 640 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1); 641 av_extend (av, AvFILLp (av) + 1);
479 642
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 643 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 644}
482 645
483/** load & save, init *******************************************************/ 646/** load & save, init *******************************************************/
647
648ecb_inline void
649swap_sv (SV *a, SV *b)
650{
651 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
652 SV tmp;
653
654 /* swap sv_any */
655 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
656
657 /* swap sv_flags */
658 SvFLAGS (&tmp) = SvFLAGS (a);
659 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
660 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
661
662#if PERL_VERSION_ATLEAST (5,10,0)
663 /* perl 5.10 and later complicates this _quite_ a bit, but it also
664 * is much faster, so no quarrels here. alternatively, we could
665 * sv_upgrade to avoid this.
666 */
667 {
668 /* swap sv_u */
669 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
670
671 /* if SvANY points to the head, we need to adjust the pointers,
672 * as the pointer for a still points to b, and maybe vice versa.
673 */
674 #define svany_in_head(type) \
675 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
676
677 if (svany_in_head (SvTYPE (a)))
678 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
679
680 if (svany_in_head (SvTYPE (b)))
681 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
682 }
683#endif
684}
685
686/* swap sv heads, at least logically */
687static void
688swap_svs (pTHX_ Coro__State c)
689{
690 int i;
691
692 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
693 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
694}
695
696#define SWAP_SVS(coro) \
697 if (ecb_expect_false ((coro)->swap_sv)) \
698 swap_svs (aTHX_ (coro))
699
700static void
701on_enterleave_call (pTHX_ SV *cb);
484 702
485static void 703static void
486load_perl (pTHX_ Coro__State c) 704load_perl (pTHX_ Coro__State c)
487{ 705{
488 perl_slots *slot = c->slot; 706 perl_slots *slot = c->slot;
489 c->slot = 0; 707 c->slot = 0;
490 708
491 PL_mainstack = c->mainstack; 709 PL_mainstack = c->mainstack;
492 710
493 GvSV (PL_defgv) = slot->defsv; 711#if CORO_JIT
494 GvAV (PL_defgv) = slot->defav; 712 load_perl_slots (slot);
495 GvSV (PL_errgv) = slot->errsv; 713#else
496 GvSV (irsgv) = slot->irsgv;
497
498 #define VAR(name,type) PL_ ## name = slot->name; 714 #define VARx(name,expr,type) expr = slot->name;
499 # include "state.h" 715 # include "state.h"
500 #undef VAR 716 #undef VARx
717#endif
501 718
502 { 719 {
503 dSP; 720 dSP;
504 721
505 CV *cv; 722 CV *cv;
506 723
507 /* now do the ugly restore mess */ 724 /* now do the ugly restore mess */
508 while (expect_true (cv = (CV *)POPs)) 725 while (ecb_expect_true (cv = (CV *)POPs))
509 { 726 {
510 put_padlist (aTHX_ cv); /* mark this padlist as available */ 727 put_padlist (aTHX_ cv); /* mark this padlist as available */
511 CvDEPTH (cv) = PTR2IV (POPs); 728 CvDEPTH (cv) = PTR2IV (POPs);
512 CvPADLIST (cv) = (AV *)POPs; 729 CvPADLIST (cv) = (AV *)POPs;
513 } 730 }
514 731
515 PUTBACK; 732 PUTBACK;
516 } 733 }
517 734
518 slf_frame = c->slf_frame; 735 slf_frame = c->slf_frame;
736 CORO_THROW = c->except;
737
738 if (ecb_expect_false (enable_times))
739 {
740 if (ecb_expect_false (!times_valid))
741 coro_times_update ();
742
743 coro_times_sub (c);
744 }
745
746 if (ecb_expect_false (c->on_enter))
747 {
748 int i;
749
750 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
751 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
752 }
753
754 SWAP_SVS (c);
519} 755}
520 756
521static void 757static void
522save_perl (pTHX_ Coro__State c) 758save_perl (pTHX_ Coro__State c)
523{ 759{
760 SWAP_SVS (c);
761
762 if (ecb_expect_false (c->on_leave))
763 {
764 int i;
765
766 for (i = AvFILLp (c->on_leave); i >= 0; --i)
767 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
768 }
769
770 times_valid = 0;
771
772 if (ecb_expect_false (enable_times))
773 {
774 coro_times_update (); times_valid = 1;
775 coro_times_add (c);
776 }
777
778 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 779 c->slf_frame = slf_frame;
525 780
526 { 781 {
527 dSP; 782 dSP;
528 I32 cxix = cxstack_ix; 783 I32 cxix = cxstack_ix;
… …
536 791
537 XPUSHs (Nullsv); 792 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 793 /* this loop was inspired by pp_caller */
539 for (;;) 794 for (;;)
540 { 795 {
541 while (expect_true (cxix >= 0)) 796 while (ecb_expect_true (cxix >= 0))
542 { 797 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 798 PERL_CONTEXT *cx = &ccstk[cxix--];
544 799
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 800 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 801 {
547 CV *cv = cx->blk_sub.cv; 802 CV *cv = cx->blk_sub.cv;
548 803
549 if (expect_true (CvDEPTH (cv))) 804 if (ecb_expect_true (CvDEPTH (cv)))
550 { 805 {
551 EXTEND (SP, 3); 806 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 807 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 808 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 809 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 812 get_padlist (aTHX_ cv);
558 } 813 }
559 } 814 }
560 } 815 }
561 816
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 817 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 818 break;
564 819
565 top_si = top_si->si_prev; 820 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 821 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 822 cxix = top_si->si_cxix;
… …
569 824
570 PUTBACK; 825 PUTBACK;
571 } 826 }
572 827
573 /* allocate some space on the context stack for our purposes */ 828 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 829 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 830 {
579 int i; 831 unsigned int i;
832
580 for (i = 3; i < SLOT_COUNT; ++i) 833 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 834 CXINC;
582 } 835
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 836 cxstack_ix -= SLOT_COUNT; /* undo allocation */
837 }
584 838
585 c->mainstack = PL_mainstack; 839 c->mainstack = PL_mainstack;
586 840
587 { 841 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 842 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 843
590 slot->defav = GvAV (PL_defgv); 844#if CORO_JIT
591 slot->defsv = DEFSV; 845 save_perl_slots (slot);
592 slot->errsv = ERRSV; 846#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 847 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 848 # include "state.h"
597 #undef VAR 849 #undef VARx
850#endif
598 } 851 }
599} 852}
600 853
601/* 854/*
602 * allocate various perl stacks. This is almost an exact copy 855 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 856 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 857 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 858 * not usually need a lot of stackspace.
606 */ 859 */
607#if CORO_PREFER_PERL_FUNCTIONS 860#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 861# define coro_init_stacks(thx) init_stacks ()
609#else 862#else
610static void 863static void
611coro_init_stacks (pTHX) 864coro_init_stacks (pTHX)
612{ 865{
613 PL_curstackinfo = new_stackinfo(32, 8); 866 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 867 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 868 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 869 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 870
618 PL_stack_base = AvARRAY(PL_curstack); 871 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 886#endif
634 887
635 New(54,PL_scopestack,8,I32); 888 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 889 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 890 PL_scopestack_max = 8;
891#if HAS_SCOPESTACK_NAME
892 New(54,PL_scopestack_name,8,const char*);
893#endif
638 894
639 New(54,PL_savestack,24,ANY); 895 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 896 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 897 PL_savestack_max = 24;
642 898
… …
670 } 926 }
671 927
672 Safefree (PL_tmps_stack); 928 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 929 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 930 Safefree (PL_scopestack);
931#if HAS_SCOPESTACK_NAME
932 Safefree (PL_scopestack_name);
933#endif
675 Safefree (PL_savestack); 934 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 935#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 936 Safefree (PL_retstack);
678#endif 937#endif
679} 938}
680 939
940#define CORO_RSS \
941 rss += sizeof (SYM (curstackinfo)); \
942 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
943 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
944 rss += SYM (tmps_max) * sizeof (SV *); \
945 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
946 rss += SYM (scopestack_max) * sizeof (I32); \
947 rss += SYM (savestack_max) * sizeof (ANY);
948
681static size_t 949static size_t
682coro_rss (pTHX_ struct coro *coro) 950coro_rss (pTHX_ struct coro *coro)
683{ 951{
684 size_t rss = sizeof (*coro); 952 size_t rss = sizeof (*coro);
685 953
686 if (coro->mainstack) 954 if (coro->mainstack)
687 { 955 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 956 if (coro->flags & CF_RUNNING)
692 { 957 {
693 slot = &tmp_slot; 958 #define SYM(sym) PL_ ## sym
694 959 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 960 #undef SYM
698 } 961 }
699 else 962 else
700 slot = coro->slot;
701
702 if (slot)
703 { 963 {
704 rss += sizeof (slot->curstackinfo); 964 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 965 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 966 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 967 }
716 } 968 }
717 969
718 return rss; 970 return rss;
719} 971}
… …
732#endif 984#endif
733 985
734/* 986/*
735 * This overrides the default magic get method of %SIG elements. 987 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 988 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 989 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 990 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 991 */
743static int 992static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 993coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 994{
746 const char *s = MgPV_nolen_const (mg); 995 const char *s = MgPV_nolen_const (mg);
747 996
748 if (*s == '_') 997 if (*s == '_')
… …
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1001 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1002 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754 1003
755 if (svp) 1004 if (svp)
756 { 1005 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1006 SV *ssv;
1007
1008 if (!*svp)
1009 ssv = &PL_sv_undef;
1010 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1011 ssv = sv_2mortal (newRV_inc (*svp));
1012 else
1013 ssv = *svp;
1014
1015 sv_setsv (sv, ssv);
758 return 0; 1016 return 0;
759 } 1017 }
760 } 1018 }
761 1019
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763} 1021}
764 1022
765static int 1023static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1025{
768 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
769 1027
770 if (*s == '_') 1028 if (*s == '_')
… …
784 } 1042 }
785 1043
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1045}
788 1046
789static int 1047static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1048coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1049{
792 const char *s = MgPV_nolen_const (mg); 1050 const char *s = MgPV_nolen_const (mg);
793 1051
794 if (*s == '_') 1052 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1057 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1058
801 if (svp) 1059 if (svp)
802 { 1060 {
803 SV *old = *svp; 1061 SV *old = *svp;
804 *svp = newSVsv (sv); 1062 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1063 SvREFCNT_dec (old);
806 return 0; 1064 return 0;
807 } 1065 }
808 } 1066 }
809 1067
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1079slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1080{
823 return 0; 1081 return 0;
824} 1082}
825 1083
826static void 1084static int
1085slf_check_repeat (pTHX_ struct CoroSLF *frame)
1086{
1087 return 1;
1088}
1089
1090static UNOP init_perl_op;
1091
1092ecb_noinline static void /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 1093init_perl (pTHX_ struct coro *coro)
828{ 1094{
829 /* 1095 /*
830 * emulate part of the perl startup here. 1096 * emulate part of the perl startup here.
831 */ 1097 */
832 coro_init_stacks (aTHX); 1098 coro_init_stacks (aTHX);
833 1099
834 PL_runops = RUNOPS_DEFAULT; 1100 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1101 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1102 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1103 PL_comppad = 0;
1104 PL_comppad_name = 0;
1105 PL_comppad_name_fill = 0;
1106 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1107 PL_curpm = 0;
839 PL_curpad = 0; 1108 PL_curpad = 0;
840 PL_localizing = 0; 1109 PL_localizing = 0;
841 PL_dirty = 0;
842 PL_restartop = 0; 1110 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1111#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1112 PL_parser = 0;
845#endif 1113#endif
1114 PL_hints = 0;
846 1115
847 /* recreate the die/warn hooks */ 1116 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1117 PL_diehook = SvREFCNT_inc (rv_diehook);
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1118 PL_warnhook = SvREFCNT_inc (rv_warnhook);
850 1119
851 GvSV (PL_defgv) = newSV (0); 1120 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1121 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1122 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1123 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1124 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 1125 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1126 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1127
858 { 1128 {
859 dSP; 1129 dSP;
860 UNOP myop; 1130 UNOP myop;
861 1131
862 Zero (&myop, 1, UNOP); 1132 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1133 myop.op_next = Nullop;
1134 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1135 myop.op_flags = OPf_WANT_VOID;
865 1136
866 PUSHMARK (SP); 1137 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1138 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 1139 PUTBACK;
869 PL_op = (OP *)&myop; 1140 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1141 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1142 }
873 1143
874 /* this newly created coroutine might be run on an existing cctx which most 1144 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1145 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1146 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1147 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1148 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879} 1149 slf_frame.destroy = 0;
880 1150
1151 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1152 init_perl_op.op_next = PL_op;
1153 init_perl_op.op_type = OP_ENTERSUB;
1154 init_perl_op.op_ppaddr = pp_slf;
1155 /* no flags etc. required, as an init function won't be called */
1156
1157 PL_op = (OP *)&init_perl_op;
1158
1159 /* copy throw, in case it was set before init_perl */
1160 CORO_THROW = coro->except;
1161
1162 SWAP_SVS (coro);
1163
1164 if (ecb_expect_false (enable_times))
1165 {
1166 coro_times_update ();
1167 coro_times_sub (coro);
1168 }
1169}
1170
881static void 1171static void
882coro_destruct (pTHX_ struct coro *coro) 1172coro_unwind_stacks (pTHX)
883{ 1173{
884 if (!IN_DESTRUCT) 1174 if (!IN_DESTRUCT)
885 { 1175 {
886 /* restore all saved variables and stuff */ 1176 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1177 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1185 POPSTACK_TO (PL_mainstack);
896 1186
897 /* unwind main stack */ 1187 /* unwind main stack */
898 dounwind (-1); 1188 dounwind (-1);
899 } 1189 }
1190}
900 1191
901 SvREFCNT_dec (GvSV (PL_defgv)); 1192static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1193destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1194{
904 SvREFCNT_dec (PL_defoutgv); 1195 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1196
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1197 {
1198 SV *old_current = SvRV (coro_current);
1199 struct coro *current = SvSTATE (old_current);
1200
1201 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1202
1203 save_perl (aTHX_ current);
1204
1205 /* this will cause transfer_check to croak on block*/
1206 SvRV_set (coro_current, (SV *)coro->hv);
1207
1208 load_perl (aTHX_ coro);
1209
1210 coro_unwind_stacks (aTHX);
1211
1212 /* restore swapped sv's */
1213 SWAP_SVS (coro);
1214
1215 coro_destruct_stacks (aTHX);
1216
1217 /* now save some sv's to be free'd later */
1218 svf [0] = GvSV (PL_defgv);
1219 svf [1] = (SV *)GvAV (PL_defgv);
1220 svf [2] = GvSV (PL_errgv);
1221 svf [3] = (SV *)PL_defoutgv;
1222 svf [4] = PL_rs;
1223 svf [5] = GvSV (irsgv);
1224 svf [6] = (SV *)GvHV (PL_hintgv);
1225 svf [7] = PL_diehook;
1226 svf [8] = PL_warnhook;
1227 assert (9 == sizeof (svf) / sizeof (*svf));
1228
1229 SvRV_set (coro_current, old_current);
1230
1231 load_perl (aTHX_ current);
1232 }
1233
1234 {
1235 unsigned int i;
1236
1237 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1238 SvREFCNT_dec (svf [i]);
1239
911 SvREFCNT_dec (coro->saved_deffh); 1240 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1241 SvREFCNT_dec (coro->rouse_cb);
913 1242 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1243 SvREFCNT_dec (coro->invoke_av);
1244 }
915} 1245}
916 1246
917INLINE void 1247ecb_inline void
918free_coro_mortal (pTHX) 1248free_coro_mortal (pTHX)
919{ 1249{
920 if (expect_true (coro_mortal)) 1250 if (ecb_expect_true (coro_mortal))
921 { 1251 {
922 SvREFCNT_dec (coro_mortal); 1252 SvREFCNT_dec ((SV *)coro_mortal);
923 coro_mortal = 0; 1253 coro_mortal = 0;
924 } 1254 }
925} 1255}
926 1256
927static int 1257static int
928runops_trace (pTHX) 1258runops_trace (pTHX)
929{ 1259{
930 COP *oldcop = 0; 1260 COP *oldcop = 0;
931 int oldcxix = -2; 1261 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1262
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1263 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1264 {
937 PERL_ASYNC_CHECK (); 1265 PERL_ASYNC_CHECK ();
938 1266
939 if (cctx->flags & CC_TRACE_ALL) 1267 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1268 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1269 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1270 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1272 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1273 AV *av = newAV (); /* return values */
946 SV **cb; 1274 SV **cb;
… …
983 1311
984 if (PL_curcop != &PL_compiling) 1312 if (PL_curcop != &PL_compiling)
985 { 1313 {
986 SV **cb; 1314 SV **cb;
987 1315
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1316 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1317 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1318 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1319
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1320 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1321 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1322 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1323 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1324 SV *fullname = sv_2mortal (newSV (0));
998 1325
999 if (isGV (gv)) 1326 if (isGV (gv))
… …
1004 SAVETMPS; 1331 SAVETMPS;
1005 EXTEND (SP, 3); 1332 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1333 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1334 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1335 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1336 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1337 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1338 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1339 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1340 SPAGAIN;
1014 FREETMPS; 1341 FREETMPS;
… …
1017 } 1344 }
1018 1345
1019 oldcxix = cxstack_ix; 1346 oldcxix = cxstack_ix;
1020 } 1347 }
1021 1348
1022 if (cctx->flags & CC_TRACE_LINE) 1349 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1350 {
1024 dSP; 1351 dSP;
1025 1352
1026 PL_runops = RUNOPS_DEFAULT; 1353 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1354 ENTER;
… …
1046 1373
1047 TAINT_NOT; 1374 TAINT_NOT;
1048 return 0; 1375 return 0;
1049} 1376}
1050 1377
1378static struct CoroSLF cctx_ssl_frame;
1379
1051static void 1380static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1381slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1382{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1383 ta->prev = 0;
1056} 1384}
1057 1385
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1386static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1387slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1062static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1388{
1065 dSP; 1389 *frame = cctx_ssl_frame;
1066 UNOP myop;
1067 1390
1391 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1392}
1393
1394/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1395static void ecb_noinline
1396cctx_prepare (pTHX)
1397{
1068 PL_top_env = &PL_start_env; 1398 PL_top_env = &PL_start_env;
1069 1399
1070 if (cctx->flags & CC_TRACE) 1400 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1401 PL_runops = runops_trace;
1072 1402
1073 Zero (&myop, 1, UNOP); 1403 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1404 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1405 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1406 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1407
1077 PUSHMARK (SP); 1408 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1409 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1410
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1411 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1412 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1413}
1086 1414
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1415/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1416ecb_inline void
1089transfer_tail (pTHX) 1417transfer_tail (pTHX)
1090{ 1418{
1091 free_coro_mortal (aTHX); 1419 free_coro_mortal (aTHX);
1092} 1420}
1093 1421
… …
1108 /* normally we would need to skip the entersub here */ 1436 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1437 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1438 /* PL_nop = PL_nop->op_next */
1111 1439
1112 /* inject a fake subroutine call to cctx_init */ 1440 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1441 cctx_prepare (aTHX);
1114 1442
1115 /* cctx_run is the alternative tail of transfer() */ 1443 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1444 transfer_tail (aTHX);
1117 1445
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1446 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1447 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1448 perl_run (PL_curinterp);
1449 /*
1450 * Unfortunately, there is no way to get at the return values of the
1451 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1452 * runtime errors here, as this is just a random interpreter, not a thread.
1453 */
1121 1454
1122 /* 1455 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1456 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1457 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1458 * reason for perl_run to return. We try to exit by jumping to the
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1459 * bootstrap-time "top" top_env, as we cannot restore the "main"
1127 * coroutine as Coro has no such concept 1460 * coroutine as Coro has no such concept.
1461 * This actually isn't valid with the pthread backend, but OSes requiring
1462 * that backend are too broken to do it in a standards-compliant way.
1128 */ 1463 */
1129 PL_top_env = main_top_env; 1464 PL_top_env = main_top_env;
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1465 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1466 }
1132} 1467}
1133 1468
1134static coro_cctx * 1469static coro_cctx *
1135cctx_new () 1470cctx_new (void)
1136{ 1471{
1137 coro_cctx *cctx; 1472 coro_cctx *cctx;
1138 1473
1139 ++cctx_count; 1474 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx); 1475 New (0, cctx, 1, coro_cctx);
… …
1146 return cctx; 1481 return cctx;
1147} 1482}
1148 1483
1149/* create a new cctx only suitable as source */ 1484/* create a new cctx only suitable as source */
1150static coro_cctx * 1485static coro_cctx *
1151cctx_new_empty () 1486cctx_new_empty (void)
1152{ 1487{
1153 coro_cctx *cctx = cctx_new (); 1488 coro_cctx *cctx = cctx_new ();
1154 1489
1155 cctx->sptr = 0; 1490 cctx->sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0); 1491 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1158 return cctx; 1493 return cctx;
1159} 1494}
1160 1495
1161/* create a new cctx suitable as destination/running a perl interpreter */ 1496/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx * 1497static coro_cctx *
1163cctx_new_run () 1498cctx_new_run (void)
1164{ 1499{
1165 coro_cctx *cctx = cctx_new (); 1500 coro_cctx *cctx = cctx_new ();
1166 void *stack_start; 1501 void *stack_start;
1167 size_t stack_size; 1502 size_t stack_size;
1168 1503
1169#if HAVE_MMAP 1504#if HAVE_MMAP
1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1505 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1171 /* mmap supposedly does allocate-on-write for us */ 1506 /* mmap supposedly does allocate-on-write for us */
1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1507 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1173 1508
1174 if (cctx->sptr != (void *)-1) 1509 if (cctx->sptr != (void *)-1)
1175 { 1510 {
1176 #if CORO_STACKGUARD 1511 #if CORO_STACKGUARD
1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1512 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1209cctx_destroy (coro_cctx *cctx) 1544cctx_destroy (coro_cctx *cctx)
1210{ 1545{
1211 if (!cctx) 1546 if (!cctx)
1212 return; 1547 return;
1213 1548
1549 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1550
1214 --cctx_count; 1551 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1552 coro_destroy (&cctx->cctx);
1216 1553
1217 /* coro_transfer creates new, empty cctx's */ 1554 /* coro_transfer creates new, empty cctx's */
1218 if (cctx->sptr) 1555 if (cctx->sptr)
… …
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1573#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1237 1574
1238static coro_cctx * 1575static coro_cctx *
1239cctx_get (pTHX) 1576cctx_get (pTHX)
1240{ 1577{
1241 while (expect_true (cctx_first)) 1578 while (ecb_expect_true (cctx_first))
1242 { 1579 {
1243 coro_cctx *cctx = cctx_first; 1580 coro_cctx *cctx = cctx_first;
1244 cctx_first = cctx->next; 1581 cctx_first = cctx->next;
1245 --cctx_idle; 1582 --cctx_idle;
1246 1583
1247 if (expect_true (!CCTX_EXPIRED (cctx))) 1584 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1248 return cctx; 1585 return cctx;
1249 1586
1250 cctx_destroy (cctx); 1587 cctx_destroy (cctx);
1251 } 1588 }
1252 1589
… …
1257cctx_put (coro_cctx *cctx) 1594cctx_put (coro_cctx *cctx)
1258{ 1595{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1596 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1260 1597
1261 /* free another cctx if overlimit */ 1598 /* free another cctx if overlimit */
1262 if (expect_false (cctx_idle >= cctx_max_idle)) 1599 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1263 { 1600 {
1264 coro_cctx *first = cctx_first; 1601 coro_cctx *first = cctx_first;
1265 cctx_first = first->next; 1602 cctx_first = first->next;
1266 --cctx_idle; 1603 --cctx_idle;
1267 1604
… …
1276/** coroutine switching *****************************************************/ 1613/** coroutine switching *****************************************************/
1277 1614
1278static void 1615static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1616transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1617{
1618 /* TODO: throwing up here is considered harmful */
1619
1281 if (expect_true (prev != next)) 1620 if (ecb_expect_true (prev != next))
1282 { 1621 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1622 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1623 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1624
1286 if (expect_false (next->flags & CF_RUNNING)) 1625 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1626 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1627
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1628#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1629 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1630 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1631#endif
1296 } 1632 }
1297} 1633}
1298 1634
1299/* always use the TRANSFER macro */ 1635/* always use the TRANSFER macro */
1300static void NOINLINE 1636static void ecb_noinline /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1637transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1638{
1303 dSTACKLEVEL; 1639 dSTACKLEVEL;
1304 1640
1305 /* sometimes transfer is only called to set idle_sp */ 1641 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1642 if (ecb_expect_false (!prev))
1307 { 1643 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1644 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1645 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1646 }
1311 else if (expect_true (prev != next)) 1647 else if (ecb_expect_true (prev != next))
1312 { 1648 {
1313 coro_cctx *prev__cctx; 1649 coro_cctx *cctx_prev;
1314 1650
1315 if (expect_false (prev->flags & CF_NEW)) 1651 if (ecb_expect_false (prev->flags & CF_NEW))
1316 { 1652 {
1317 /* create a new empty/source context */ 1653 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1654 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1655 prev->flags |= CF_RUNNING;
1321 } 1656 }
1322 1657
1323 prev->flags &= ~CF_RUNNING; 1658 prev->flags &= ~CF_RUNNING;
1324 next->flags |= CF_RUNNING; 1659 next->flags |= CF_RUNNING;
1325 1660
1326 /* first get rid of the old state */ 1661 /* first get rid of the old state */
1327 save_perl (aTHX_ prev); 1662 save_perl (aTHX_ prev);
1328 1663
1329 if (expect_false (next->flags & CF_NEW)) 1664 if (ecb_expect_false (next->flags & CF_NEW))
1330 { 1665 {
1331 /* need to start coroutine */ 1666 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1667 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1668 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1669 init_perl (aTHX_ next);
1335 } 1670 }
1336 else 1671 else
1337 load_perl (aTHX_ next); 1672 load_perl (aTHX_ next);
1338 1673
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1674 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1675 if (ecb_expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1676 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1677 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1678 && !force_cctx
1346 )) 1679 ))
1347 { 1680 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1681 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1682 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1683
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1684 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1685 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1686 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1687 if (ecb_expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1688 next->cctx = cctx_get (aTHX);
1358 1689
1359 cctx_put (prev__cctx); 1690 cctx_put (cctx_current);
1360 } 1691 }
1692 else
1693 prev->cctx = cctx_current;
1361 1694
1362 ++next->usecount; 1695 ++next->usecount;
1363 1696
1364 if (expect_true (!next->cctx)) 1697 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1698 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1699
1367 if (expect_false (prev__cctx != next->cctx)) 1700 next->cctx = 0;
1701
1702 if (ecb_expect_false (cctx_prev != cctx_current))
1368 { 1703 {
1369 prev__cctx->top_env = PL_top_env; 1704 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1705 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1706 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1707 }
1373 1708
1374 transfer_tail (aTHX); 1709 transfer_tail (aTHX);
1375 } 1710 }
1376} 1711}
… …
1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1713#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1714#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1380 1715
1381/** high level stuff ********************************************************/ 1716/** high level stuff ********************************************************/
1382 1717
1718/* this function is actually Coro, not Coro::State, but we call it from here */
1719/* because it is convenient - but it hasn't been declared yet for that reason */
1383static int 1720static void
1721coro_call_on_destroy (pTHX_ struct coro *coro);
1722
1723static void
1384coro_state_destroy (pTHX_ struct coro *coro) 1724coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1725{
1386 if (coro->flags & CF_DESTROYED) 1726 if (coro->flags & CF_ZOMBIE)
1387 return 0; 1727 return;
1388 1728
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro); 1729 slf_destroy (aTHX_ coro);
1391 1730
1392 coro->flags |= CF_DESTROYED; 1731 coro->flags |= CF_ZOMBIE;
1393 1732
1394 if (coro->flags & CF_READY) 1733 if (coro->flags & CF_READY)
1395 { 1734 {
1396 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1735 /* reduce nready, as destroying a ready coro effectively unreadies it */
1397 /* alternative: look through all ready queues and remove the coro */ 1736 /* alternative: look through all ready queues and remove the coro */
1398 --coro_nready; 1737 --coro_nready;
1399 } 1738 }
1400 else 1739 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1740 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1741
1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1404 {
1405 struct coro temp;
1406
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418
1419 cctx_destroy (coro->cctx);
1420 SvREFCNT_dec (coro->args);
1421
1422 if (coro->next) coro->next->prev = coro->prev; 1742 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1743 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1744 if (coro == coro_first) coro_first = coro->next;
1425 1745
1426 return 1; 1746 if (coro->mainstack
1747 && coro->mainstack != main_mainstack
1748 && coro->slot
1749 && !PL_dirty)
1750 destroy_perl (aTHX_ coro);
1751
1752 cctx_destroy (coro->cctx);
1753 SvREFCNT_dec (coro->startcv);
1754 SvREFCNT_dec (coro->args);
1755 SvREFCNT_dec (coro->swap_sv);
1756 SvREFCNT_dec (CORO_THROW);
1757
1758 coro_call_on_destroy (aTHX_ coro);
1759
1760 /* more destruction mayhem in coro_state_free */
1427} 1761}
1428 1762
1429static int 1763static int
1430coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1764coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1431{ 1765{
1432 struct coro *coro = (struct coro *)mg->mg_ptr; 1766 struct coro *coro = (struct coro *)mg->mg_ptr;
1433 mg->mg_ptr = 0; 1767 mg->mg_ptr = 0;
1434 1768
1435 coro->hv = 0;
1436
1437 if (--coro->refcnt < 0)
1438 {
1439 coro_state_destroy (aTHX_ coro); 1769 coro_state_destroy (aTHX_ coro);
1770 SvREFCNT_dec (coro->on_destroy);
1771 SvREFCNT_dec (coro->status);
1772
1440 Safefree (coro); 1773 Safefree (coro);
1441 }
1442 1774
1443 return 0; 1775 return 0;
1444} 1776}
1445 1777
1446static int 1778static int ecb_cold
1447coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1779coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1448{ 1780{
1449 struct coro *coro = (struct coro *)mg->mg_ptr; 1781 /* called when perl clones the current process the slow way (windows process emulation) */
1450 1782 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1451 ++coro->refcnt; 1783 mg->mg_ptr = 0;
1784 mg->mg_virtual = 0;
1452 1785
1453 return 0; 1786 return 0;
1454} 1787}
1455 1788
1456static MGVTBL coro_state_vtbl = { 1789static MGVTBL coro_state_vtbl = {
… …
1481 TRANSFER (ta, 1); 1814 TRANSFER (ta, 1);
1482} 1815}
1483 1816
1484/** Coro ********************************************************************/ 1817/** Coro ********************************************************************/
1485 1818
1486INLINE void 1819ecb_inline void
1487coro_enq (pTHX_ struct coro *coro) 1820coro_enq (pTHX_ struct coro *coro)
1488{ 1821{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1822 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1823
1492INLINE SV * 1824 SvREFCNT_inc_NN (coro->hv);
1825
1826 coro->next_ready = 0;
1827 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1828 ready [1] = coro;
1829}
1830
1831ecb_inline struct coro *
1493coro_deq (pTHX) 1832coro_deq (pTHX)
1494{ 1833{
1495 int prio; 1834 int prio;
1496 1835
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1836 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1837 {
1499 return av_shift (coro_ready [prio]); 1838 struct coro **ready = coro_ready [prio];
1839
1840 if (ready [0])
1841 {
1842 struct coro *coro = ready [0];
1843 ready [0] = coro->next_ready;
1844 return coro;
1845 }
1846 }
1500 1847
1501 return 0; 1848 return 0;
1849}
1850
1851static void
1852invoke_sv_ready_hook_helper (void)
1853{
1854 dTHX;
1855 dSP;
1856
1857 ENTER;
1858 SAVETMPS;
1859
1860 PUSHMARK (SP);
1861 PUTBACK;
1862 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1863
1864 FREETMPS;
1865 LEAVE;
1502} 1866}
1503 1867
1504static int 1868static int
1505api_ready (pTHX_ SV *coro_sv) 1869api_ready (pTHX_ SV *coro_sv)
1506{ 1870{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1871 struct coro *coro = SvSTATE (coro_sv);
1515 1872
1516 if (coro->flags & CF_READY) 1873 if (coro->flags & CF_READY)
1517 return 0; 1874 return 0;
1518 1875
1519 coro->flags |= CF_READY; 1876 coro->flags |= CF_READY;
1520 1877
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1878 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1879
1527 if (sv_hook) 1880 if (!coro_nready++)
1528 { 1881 if (coroapi.readyhook)
1529 dSP; 1882 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1883
1546 return 1; 1884 return 1;
1547} 1885}
1548 1886
1549static int 1887static int
1550api_is_ready (pTHX_ SV *coro_sv) 1888api_is_ready (pTHX_ SV *coro_sv)
1551{ 1889{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1890 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1891}
1554 1892
1555INLINE void 1893/* expects to own a reference to next->hv */
1894ecb_inline void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1895prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1896{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1897 SV *prev_sv = SvRV (coro_current);
1898
1598 ta->prev = SvSTATE_hv (prev_sv); 1899 ta->prev = SvSTATE_hv (prev_sv);
1900 ta->next = next;
1901
1599 TRANSFER_CHECK (*ta); 1902 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1903
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1904 SvRV_set (coro_current, (SV *)next->hv);
1603 1905
1604 free_coro_mortal (aTHX); 1906 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1907 coro_mortal = prev_sv;
1606} 1908}
1607 1909
1608INLINE void 1910static void
1911prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1912{
1913 for (;;)
1914 {
1915 struct coro *next = coro_deq (aTHX);
1916
1917 if (ecb_expect_true (next))
1918 {
1919 /* cannot transfer to destroyed coros, skip and look for next */
1920 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1921 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1922 else
1923 {
1924 next->flags &= ~CF_READY;
1925 --coro_nready;
1926
1927 prepare_schedule_to (aTHX_ ta, next);
1928 break;
1929 }
1930 }
1931 else
1932 {
1933 /* nothing to schedule: call the idle handler */
1934 if (SvROK (sv_idle)
1935 && SvOBJECT (SvRV (sv_idle)))
1936 {
1937 if (SvRV (sv_idle) == SvRV (coro_current))
1938 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1939
1940 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1941 api_ready (aTHX_ SvRV (sv_idle));
1942 --coro_nready;
1943 }
1944 else
1945 {
1946 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1947 dSP;
1948
1949 ENTER;
1950 SAVETMPS;
1951
1952 PUSHMARK (SP);
1953 PUTBACK;
1954 call_sv (sv_idle, G_VOID | G_DISCARD);
1955
1956 FREETMPS;
1957 LEAVE;
1958 }
1959 }
1960 }
1961}
1962
1963ecb_inline void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1964prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1965{
1611 api_ready (aTHX_ coro_current); 1966 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1967 prepare_schedule (aTHX_ ta);
1613} 1968}
1614 1969
1615INLINE void 1970ecb_inline void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1971prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{ 1972{
1618 SV *prev = SvRV (coro_current); 1973 SV *prev = SvRV (coro_current);
1619 1974
1620 if (coro_nready) 1975 if (coro_nready)
… …
1633 1988
1634 prepare_schedule (aTHX_ &ta); 1989 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1990 TRANSFER (ta, 1);
1636} 1991}
1637 1992
1993static void
1994api_schedule_to (pTHX_ SV *coro_sv)
1995{
1996 struct coro_transfer_args ta;
1997 struct coro *next = SvSTATE (coro_sv);
1998
1999 SvREFCNT_inc_NN (coro_sv);
2000 prepare_schedule_to (aTHX_ &ta, next);
2001}
2002
1638static int 2003static int
1639api_cede (pTHX) 2004api_cede (pTHX)
1640{ 2005{
1641 struct coro_transfer_args ta; 2006 struct coro_transfer_args ta;
1642 2007
1643 prepare_cede (aTHX_ &ta); 2008 prepare_cede (aTHX_ &ta);
1644 2009
1645 if (expect_true (ta.prev != ta.next)) 2010 if (ecb_expect_true (ta.prev != ta.next))
1646 { 2011 {
1647 TRANSFER (ta, 1); 2012 TRANSFER (ta, 1);
1648 return 1; 2013 return 1;
1649 } 2014 }
1650 else 2015 else
… …
1669static void 2034static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 2035api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 2036{
1672 struct coro *coro = SvSTATE (coro_sv); 2037 struct coro *coro = SvSTATE (coro_sv);
1673 2038
2039 if (coro->flags & CF_RUNNING)
2040 croak ("cannot enable tracing on a running coroutine, caught");
2041
1674 if (flags & CC_TRACE) 2042 if (flags & CC_TRACE)
1675 { 2043 {
1676 if (!coro->cctx) 2044 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 2045 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 2046 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 2047 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 2048
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2049 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 2050 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2051 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 2052 {
… …
1689 else 2057 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 2058 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 2059 }
1692} 2060}
1693 2061
2062static void
2063coro_push_av (pTHX_ AV *av, I32 gimme_v)
2064{
2065 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2066 {
2067 dSP;
2068
2069 if (gimme_v == G_SCALAR)
2070 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2071 else
2072 {
2073 int i;
2074 EXTEND (SP, AvFILLp (av) + 1);
2075
2076 for (i = 0; i <= AvFILLp (av); ++i)
2077 PUSHs (AvARRAY (av)[i]);
2078 }
2079
2080 PUTBACK;
2081 }
2082}
2083
2084static void
2085coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2086{
2087 if (!coro->on_destroy)
2088 coro->on_destroy = newAV ();
2089
2090 av_push (coro->on_destroy, cb);
2091}
2092
2093static void
2094slf_destroy_join (pTHX_ struct CoroSLF *frame)
2095{
2096 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2097}
2098
2099static int
2100slf_check_join (pTHX_ struct CoroSLF *frame)
2101{
2102 struct coro *coro = (struct coro *)frame->data;
2103
2104 if (!coro->status)
2105 return 1;
2106
2107 frame->destroy = 0;
2108
2109 coro_push_av (aTHX_ coro->status, GIMME_V);
2110
2111 SvREFCNT_dec ((SV *)coro->hv);
2112
2113 return 0;
2114}
2115
2116static void
2117slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2118{
2119 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2120
2121 if (items > 1)
2122 croak ("join called with too many arguments");
2123
2124 if (coro->status)
2125 frame->prepare = prepare_nop;
2126 else
2127 {
2128 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2129 frame->prepare = prepare_schedule;
2130 }
2131
2132 frame->check = slf_check_join;
2133 frame->destroy = slf_destroy_join;
2134 frame->data = (void *)coro;
2135 SvREFCNT_inc (coro->hv);
2136}
2137
2138static void
2139coro_call_on_destroy (pTHX_ struct coro *coro)
2140{
2141 AV *od = coro->on_destroy;
2142
2143 if (!od)
2144 return;
2145
2146 while (AvFILLp (od) >= 0)
2147 {
2148 SV *cb = sv_2mortal (av_pop (od));
2149
2150 /* coro hv's (and only hv's at the moment) are supported as well */
2151 if (SvSTATEhv_p (aTHX_ cb))
2152 api_ready (aTHX_ cb);
2153 else
2154 {
2155 dSP; /* don't disturb outer sp */
2156 PUSHMARK (SP);
2157
2158 if (coro->status)
2159 {
2160 PUTBACK;
2161 coro_push_av (aTHX_ coro->status, G_ARRAY);
2162 SPAGAIN;
2163 }
2164
2165 PUTBACK;
2166 call_sv (cb, G_VOID | G_DISCARD);
2167 }
2168 }
2169}
2170
2171static void
2172coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2173{
2174 AV *av;
2175
2176 if (coro->status)
2177 {
2178 av = coro->status;
2179 av_clear (av);
2180 }
2181 else
2182 av = coro->status = newAV ();
2183
2184 /* items are actually not so common, so optimise for this case */
2185 if (items)
2186 {
2187 int i;
2188
2189 av_extend (av, items - 1);
2190
2191 for (i = 0; i < items; ++i)
2192 av_push (av, SvREFCNT_inc_NN (arg [i]));
2193 }
2194}
2195
2196static void
2197slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2198{
2199 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2200 api_ready (aTHX_ sv_manager);
2201
2202 frame->prepare = prepare_schedule;
2203 frame->check = slf_check_repeat;
2204
2205 /* as a minor optimisation, we could unwind all stacks here */
2206 /* but that puts extra pressure on pp_slf, and is not worth much */
2207 /*coro_unwind_stacks (aTHX);*/
2208}
2209
2210static void
2211slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2212{
2213 HV *coro_hv = (HV *)SvRV (coro_current);
2214
2215 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2216 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2217}
2218
2219static void
2220slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *coro_hv;
2223 struct coro *coro;
2224
2225 if (items <= 0)
2226 croak ("Coro::cancel called without coro object,");
2227
2228 coro = SvSTATE (arg [0]);
2229 coro_hv = coro->hv;
2230
2231 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2232
2233 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2234 {
2235 /* coro currently busy cancelling something, so just notify it */
2236 coro->slf_frame.data = (void *)coro;
2237
2238 frame->prepare = prepare_nop;
2239 frame->check = slf_check_nop;
2240 }
2241 else if (coro_hv == (HV *)SvRV (coro_current))
2242 {
2243 /* cancelling the current coro is allowed, and equals terminate */
2244 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2245 }
2246 else
2247 {
2248 struct coro *self = SvSTATE_current;
2249
2250 /* otherwise we cancel directly, purely for speed reasons
2251 * unfortunately, this requires some magic trickery, as
2252 * somebody else could cancel us, so we have to fight the cancellation.
2253 * this is ugly, and hopefully fully worth the extra speed.
2254 * besides, I can't get the slow-but-safe version working...
2255 */
2256 slf_frame.data = 0;
2257 self->flags |= CF_NOCANCEL;
2258 coro_state_destroy (aTHX_ coro);
2259 self->flags &= ~CF_NOCANCEL;
2260
2261 if (slf_frame.data)
2262 {
2263 /* while we were busy we have been cancelled, so terminate */
2264 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2265 }
2266 else
2267 {
2268 frame->prepare = prepare_nop;
2269 frame->check = slf_check_nop;
2270 }
2271 }
2272}
2273
2274static int
2275slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2276{
2277 frame->prepare = 0;
2278 coro_unwind_stacks (aTHX);
2279
2280 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2281
2282 return 1;
2283}
2284
2285static int
2286safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2287{
2288 if (coro->cctx)
2289 croak ("coro inside C callback, unable to cancel at this time, caught");
2290
2291 if (coro->flags & CF_NEW)
2292 {
2293 coro_set_status (aTHX_ coro, arg, items);
2294 coro_state_destroy (aTHX_ coro);
2295 }
2296 else
2297 {
2298 if (!coro->slf_frame.prepare)
2299 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2300
2301 slf_destroy (aTHX_ coro);
2302
2303 coro_set_status (aTHX_ coro, arg, items);
2304 coro->slf_frame.prepare = prepare_nop;
2305 coro->slf_frame.check = slf_check_safe_cancel;
2306
2307 api_ready (aTHX_ (SV *)coro->hv);
2308 }
2309
2310 return 1;
2311}
2312
2313/*****************************************************************************/
2314/* async pool handler */
2315
2316static int
2317slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2318{
2319 HV *hv = (HV *)SvRV (coro_current);
2320 struct coro *coro = (struct coro *)frame->data;
2321
2322 if (!coro->invoke_cb)
2323 return 1; /* loop till we have invoke */
2324 else
2325 {
2326 hv_store (hv, "desc", sizeof ("desc") - 1,
2327 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2328
2329 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2330
2331 {
2332 dSP;
2333 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2334 PUTBACK;
2335 }
2336
2337 SvREFCNT_dec (GvAV (PL_defgv));
2338 GvAV (PL_defgv) = coro->invoke_av;
2339 coro->invoke_av = 0;
2340
2341 return 0;
2342 }
2343}
2344
2345static void
2346slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2347{
2348 HV *hv = (HV *)SvRV (coro_current);
2349 struct coro *coro = SvSTATE_hv ((SV *)hv);
2350
2351 if (ecb_expect_true (coro->saved_deffh))
2352 {
2353 /* subsequent iteration */
2354 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2355 coro->saved_deffh = 0;
2356
2357 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2358 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2359 {
2360 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2361 return;
2362 }
2363 else
2364 {
2365 av_clear (GvAV (PL_defgv));
2366 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2367
2368 coro->prio = 0;
2369
2370 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2371 api_trace (aTHX_ coro_current, 0);
2372
2373 frame->prepare = prepare_schedule;
2374 av_push (av_async_pool, SvREFCNT_inc (hv));
2375 }
2376 }
2377 else
2378 {
2379 /* first iteration, simply fall through */
2380 frame->prepare = prepare_nop;
2381 }
2382
2383 frame->check = slf_check_pool_handler;
2384 frame->data = (void *)coro;
2385}
2386
2387/*****************************************************************************/
2388/* rouse callback */
2389
2390#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2391
2392static void
2393coro_rouse_callback (pTHX_ CV *cv)
2394{
2395 dXSARGS;
2396 SV *data = (SV *)S_GENSUB_ARG;
2397
2398 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2399 {
2400 /* first call, set args */
2401 SV *coro = SvRV (data);
2402 AV *av = newAV ();
2403
2404 SvRV_set (data, (SV *)av);
2405
2406 /* better take a full copy of the arguments */
2407 while (items--)
2408 av_store (av, items, newSVsv (ST (items)));
2409
2410 api_ready (aTHX_ coro);
2411 SvREFCNT_dec (coro);
2412 }
2413
2414 XSRETURN_EMPTY;
2415}
2416
2417static int
2418slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2419{
2420 SV *data = (SV *)frame->data;
2421
2422 if (CORO_THROW)
2423 return 0;
2424
2425 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2426 return 1;
2427
2428 /* now push all results on the stack */
2429 {
2430 dSP;
2431 AV *av = (AV *)SvRV (data);
2432 int i;
2433
2434 EXTEND (SP, AvFILLp (av) + 1);
2435 for (i = 0; i <= AvFILLp (av); ++i)
2436 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2437
2438 /* we have stolen the elements, so set length to zero and free */
2439 AvFILLp (av) = -1;
2440 av_undef (av);
2441
2442 PUTBACK;
2443 }
2444
2445 return 0;
2446}
2447
2448static void
2449slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2450{
2451 SV *cb;
2452
2453 if (items)
2454 cb = arg [0];
2455 else
2456 {
2457 struct coro *coro = SvSTATE_current;
2458
2459 if (!coro->rouse_cb)
2460 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2461
2462 cb = sv_2mortal (coro->rouse_cb);
2463 coro->rouse_cb = 0;
2464 }
2465
2466 if (!SvROK (cb)
2467 || SvTYPE (SvRV (cb)) != SVt_PVCV
2468 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2469 croak ("Coro::rouse_wait called with illegal callback argument,");
2470
2471 {
2472 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2473 SV *data = (SV *)S_GENSUB_ARG;
2474
2475 frame->data = (void *)data;
2476 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2477 frame->check = slf_check_rouse_wait;
2478 }
2479}
2480
2481static SV *
2482coro_new_rouse_cb (pTHX)
2483{
2484 HV *hv = (HV *)SvRV (coro_current);
2485 struct coro *coro = SvSTATE_hv (hv);
2486 SV *data = newRV_inc ((SV *)hv);
2487 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2488
2489 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2490 SvREFCNT_dec (data); /* magicext increases the refcount */
2491
2492 SvREFCNT_dec (coro->rouse_cb);
2493 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2494
2495 return cb;
2496}
2497
2498/*****************************************************************************/
2499/* schedule-like-function opcode (SLF) */
2500
2501static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2502static const CV *slf_cv;
2503static SV **slf_argv;
2504static int slf_argc, slf_arga; /* count, allocated */
2505static I32 slf_ax; /* top of stack, for restore */
2506
2507/* this restores the stack in the case we patched the entersub, to */
2508/* recreate the stack frame as perl will on following calls */
2509/* since entersub cleared the stack */
2510static OP *
2511pp_restore (pTHX)
2512{
2513 int i;
2514 SV **SP = PL_stack_base + slf_ax;
2515
2516 PUSHMARK (SP);
2517
2518 EXTEND (SP, slf_argc + 1);
2519
2520 for (i = 0; i < slf_argc; ++i)
2521 PUSHs (sv_2mortal (slf_argv [i]));
2522
2523 PUSHs ((SV *)CvGV (slf_cv));
2524
2525 RETURNOP (slf_restore.op_first);
2526}
2527
2528static void
2529slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2530{
2531 SV **arg = (SV **)slf_frame.data;
2532
2533 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2534}
2535
2536static void
2537slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2538{
2539 if (items != 2)
2540 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2541
2542 frame->prepare = slf_prepare_transfer;
2543 frame->check = slf_check_nop;
2544 frame->data = (void *)arg; /* let's hope it will stay valid */
2545}
2546
2547static void
2548slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 frame->prepare = prepare_schedule;
2551 frame->check = slf_check_nop;
2552}
2553
2554static void
2555slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2556{
2557 struct coro *next = (struct coro *)slf_frame.data;
2558
2559 SvREFCNT_inc_NN (next->hv);
2560 prepare_schedule_to (aTHX_ ta, next);
2561}
2562
2563static void
2564slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2565{
2566 if (!items)
2567 croak ("Coro::schedule_to expects a coroutine argument, caught");
2568
2569 frame->data = (void *)SvSTATE (arg [0]);
2570 frame->prepare = slf_prepare_schedule_to;
2571 frame->check = slf_check_nop;
2572}
2573
2574static void
2575slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 api_ready (aTHX_ SvRV (coro_current));
2578
2579 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2580}
2581
2582static void
2583slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2584{
2585 frame->prepare = prepare_cede;
2586 frame->check = slf_check_nop;
2587}
2588
2589static void
2590slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2591{
2592 frame->prepare = prepare_cede_notself;
2593 frame->check = slf_check_nop;
2594}
2595
2596/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2597static void
2598slf_destroy (pTHX_ struct coro *coro)
2599{
2600 /* this callback is reserved for slf functions needing to do cleanup */
2601 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2602 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2603
2604 /*
2605 * The on_destroy above most likely is from an SLF call.
2606 * Since by definition the SLF call will not finish when we destroy
2607 * the coro, we will have to force-finish it here, otherwise
2608 * cleanup functions cannot call SLF functions.
2609 */
2610 coro->slf_frame.prepare = 0;
2611}
2612
2613/*
2614 * these not obviously related functions are all rolled into one
2615 * function to increase chances that they all will call transfer with the same
2616 * stack offset
2617 * SLF stands for "schedule-like-function".
2618 */
2619static OP *
2620pp_slf (pTHX)
2621{
2622 I32 checkmark; /* mark SP to see how many elements check has pushed */
2623
2624 /* set up the slf frame, unless it has already been set-up */
2625 /* the latter happens when a new coro has been started */
2626 /* or when a new cctx was attached to an existing coroutine */
2627 if (ecb_expect_true (!slf_frame.prepare))
2628 {
2629 /* first iteration */
2630 dSP;
2631 SV **arg = PL_stack_base + TOPMARK + 1;
2632 int items = SP - arg; /* args without function object */
2633 SV *gv = *sp;
2634
2635 /* do a quick consistency check on the "function" object, and if it isn't */
2636 /* for us, divert to the real entersub */
2637 if (SvTYPE (gv) != SVt_PVGV
2638 || !GvCV (gv)
2639 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2640 return PL_ppaddr[OP_ENTERSUB](aTHX);
2641
2642 if (!(PL_op->op_flags & OPf_STACKED))
2643 {
2644 /* ampersand-form of call, use @_ instead of stack */
2645 AV *av = GvAV (PL_defgv);
2646 arg = AvARRAY (av);
2647 items = AvFILLp (av) + 1;
2648 }
2649
2650 /* now call the init function, which needs to set up slf_frame */
2651 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2652 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2653
2654 /* pop args */
2655 SP = PL_stack_base + POPMARK;
2656
2657 PUTBACK;
2658 }
2659
2660 /* now that we have a slf_frame, interpret it! */
2661 /* we use a callback system not to make the code needlessly */
2662 /* complicated, but so we can run multiple perl coros from one cctx */
2663
2664 do
2665 {
2666 struct coro_transfer_args ta;
2667
2668 slf_frame.prepare (aTHX_ &ta);
2669 TRANSFER (ta, 0);
2670
2671 checkmark = PL_stack_sp - PL_stack_base;
2672 }
2673 while (slf_frame.check (aTHX_ &slf_frame));
2674
2675 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2676
2677 /* exception handling */
2678 if (ecb_expect_false (CORO_THROW))
2679 {
2680 SV *exception = sv_2mortal (CORO_THROW);
2681
2682 CORO_THROW = 0;
2683 sv_setsv (ERRSV, exception);
2684 croak (0);
2685 }
2686
2687 /* return value handling - mostly like entersub */
2688 /* make sure we put something on the stack in scalar context */
2689 if (GIMME_V == G_SCALAR
2690 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2691 {
2692 dSP;
2693 SV **bot = PL_stack_base + checkmark;
2694
2695 if (sp == bot) /* too few, push undef */
2696 bot [1] = &PL_sv_undef;
2697 else /* too many, take last one */
2698 bot [1] = *sp;
2699
2700 SP = bot + 1;
2701
2702 PUTBACK;
2703 }
2704
2705 return NORMAL;
2706}
2707
2708static void
2709api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2710{
2711 int i;
2712 SV **arg = PL_stack_base + ax;
2713 int items = PL_stack_sp - arg + 1;
2714
2715 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2716
2717 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2718 && PL_op->op_ppaddr != pp_slf)
2719 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2720
2721 CvFLAGS (cv) |= CVf_SLF;
2722 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2723 slf_cv = cv;
2724
2725 /* we patch the op, and then re-run the whole call */
2726 /* we have to put the same argument on the stack for this to work */
2727 /* and this will be done by pp_restore */
2728 slf_restore.op_next = (OP *)&slf_restore;
2729 slf_restore.op_type = OP_CUSTOM;
2730 slf_restore.op_ppaddr = pp_restore;
2731 slf_restore.op_first = PL_op;
2732
2733 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2734
2735 if (PL_op->op_flags & OPf_STACKED)
2736 {
2737 if (items > slf_arga)
2738 {
2739 slf_arga = items;
2740 Safefree (slf_argv);
2741 New (0, slf_argv, slf_arga, SV *);
2742 }
2743
2744 slf_argc = items;
2745
2746 for (i = 0; i < items; ++i)
2747 slf_argv [i] = SvREFCNT_inc (arg [i]);
2748 }
2749 else
2750 slf_argc = 0;
2751
2752 PL_op->op_ppaddr = pp_slf;
2753 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2754
2755 PL_op = (OP *)&slf_restore;
2756}
2757
2758/*****************************************************************************/
2759/* dynamic wind */
2760
2761static void
2762on_enterleave_call (pTHX_ SV *cb)
2763{
2764 dSP;
2765
2766 PUSHSTACK;
2767
2768 PUSHMARK (SP);
2769 PUTBACK;
2770 call_sv (cb, G_VOID | G_DISCARD);
2771 SPAGAIN;
2772
2773 POPSTACK;
2774}
2775
2776static SV *
2777coro_avp_pop_and_free (pTHX_ AV **avp)
2778{
2779 AV *av = *avp;
2780 SV *res = av_pop (av);
2781
2782 if (AvFILLp (av) < 0)
2783 {
2784 *avp = 0;
2785 SvREFCNT_dec (av);
2786 }
2787
2788 return res;
2789}
2790
2791static void
2792coro_pop_on_enter (pTHX_ void *coro)
2793{
2794 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2795 SvREFCNT_dec (cb);
2796}
2797
2798static void
2799coro_pop_on_leave (pTHX_ void *coro)
2800{
2801 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2802 on_enterleave_call (aTHX_ sv_2mortal (cb));
2803}
2804
1694/*****************************************************************************/ 2805/*****************************************************************************/
1695/* PerlIO::cede */ 2806/* PerlIO::cede */
1696 2807
1697typedef struct 2808typedef struct
1698{ 2809{
1699 PerlIOBuf base; 2810 PerlIOBuf base;
1700 NV next, every; 2811 NV next, every;
1701} PerlIOCede; 2812} PerlIOCede;
1702 2813
1703static IV 2814static IV ecb_cold
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2815PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{ 2816{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2817 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 2818
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2819 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every; 2820 self->next = nvtime () + self->every;
1710 2821
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2822 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712} 2823}
1713 2824
1714static SV * 2825static SV * ecb_cold
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2826PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{ 2827{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2828 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718 2829
1719 return newSVnv (self->every); 2830 return newSVnv (self->every);
… …
1765 PerlIOBuf_get_cnt, 2876 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2877 PerlIOBuf_set_ptrcnt,
1767}; 2878};
1768 2879
1769/*****************************************************************************/ 2880/*****************************************************************************/
2881/* Coro::Semaphore & Coro::Signal */
1770 2882
1771static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1772static const CV *slf_cv;
1773static SV *slf_arg0;
1774static SV *slf_arg1;
1775static SV *slf_arg2;
1776static I32 slf_ax; /* top of stack, for restore */
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2883static SV *
1782pp_restore (pTHX) 2884coro_waitarray_new (pTHX_ int count)
1783{ 2885{
1784 SV **SP = PL_stack_base + slf_ax; 2886 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2887 AV *av = newAV ();
2888 SV **ary;
1785 2889
1786 PUSHMARK (SP); 2890 /* unfortunately, building manually saves memory */
1787 2891 Newx (ary, 2, SV *);
1788 EXTEND (SP, 3); 2892 AvALLOC (av) = ary;
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 2893#if PERL_VERSION_ATLEAST (5,10,0)
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); 2894 AvARRAY (av) = ary;
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); 2895#else
1792 PUSHs ((SV *)CvGV (slf_cv)); 2896 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
1793 2897 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
1794 RETURNOP (slf_restore.op_first); 2898 SvPVX ((SV *)av) = (char *)ary;
1795}
1796
1797static void
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 /* now call the init function, which needs to set up slf_frame */
1903 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1904 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1905
1906 /* pop args */
1907 SP = PL_stack_base + POPMARK;
1908
1909 PUTBACK;
1910 }
1911
1912 /* now that we have a slf_frame, interpret it! */
1913 /* we use a callback system not to make the code needlessly */
1914 /* complicated, but so we can run multiple perl coros from one cctx */
1915
1916 do
1917 {
1918 struct coro_transfer_args ta;
1919
1920 slf_frame.prepare (aTHX_ &ta);
1921 TRANSFER (ta, 0);
1922
1923 checkmark = PL_stack_sp - PL_stack_base;
1924 }
1925 while (slf_frame.check (aTHX_ &slf_frame));
1926
1927 {
1928 dSP;
1929 SV **bot = PL_stack_base + checkmark;
1930 int gimme = GIMME_V;
1931
1932 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1933
1934 /* make sure we put something on the stack in scalar context */
1935 if (gimme == G_SCALAR)
1936 {
1937 if (sp == bot)
1938 XPUSHs (&PL_sv_undef);
1939
1940 SP = bot + 1;
1941 }
1942
1943 PUTBACK;
1944 }
1945
1946 {
1947 struct coro *coro = SvSTATE_current;
1948
1949 if (expect_false (coro->throw))
1950 {
1951 SV *exception = sv_2mortal (coro->throw);
1952
1953 coro->throw = 0;
1954 sv_setsv (ERRSV, exception);
1955 croak (0);
1956 }
1957 }
1958
1959 return NORMAL;
1960}
1961
1962static void
1963api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
1964{
1965 SV **arg = PL_stack_base + ax;
1966 int items = PL_stack_sp - arg + 1;
1967
1968 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1969
1970 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1971 && PL_op->op_ppaddr != pp_slf)
1972 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1973
1974#if 0
1975 if (items > 3)
1976 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1977#endif 2899#endif
2900 AvMAX (av) = 1;
2901 AvFILLp (av) = 0;
2902 ary [0] = newSViv (count);
1978 2903
1979 CvFLAGS (cv) |= CVf_SLF; 2904 return newRV_noinc ((SV *)av);
1980 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1981 slf_cv = cv;
1982
1983 /* we patch the op, and then re-run the whole call */
1984 /* we have to put the same argument on the stack for this to work */
1985 /* and this will be done by pp_restore */
1986 slf_restore.op_next = (OP *)&slf_restore;
1987 slf_restore.op_type = OP_CUSTOM;
1988 slf_restore.op_ppaddr = pp_restore;
1989 slf_restore.op_first = PL_op;
1990
1991 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
1992 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1993 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1994 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1995
1996 PL_op->op_ppaddr = pp_slf;
1997 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
1998
1999 PL_op = (OP *)&slf_restore;
2000} 2905}
2001 2906
2002/*****************************************************************************/ 2907/* semaphore */
2003 2908
2004static void 2909static void
2005coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2910coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2006{ 2911{
2007 SV *count_sv = AvARRAY (av)[0]; 2912 SV *count_sv = AvARRAY (av)[0];
… …
2019 AvARRAY (av)[0] = AvARRAY (av)[1]; 2924 AvARRAY (av)[0] = AvARRAY (av)[1];
2020 AvARRAY (av)[1] = count_sv; 2925 AvARRAY (av)[1] = count_sv;
2021 cb = av_shift (av); 2926 cb = av_shift (av);
2022 2927
2023 if (SvOBJECT (cb)) 2928 if (SvOBJECT (cb))
2929 {
2024 api_ready (aTHX_ cb); 2930 api_ready (aTHX_ cb);
2025 else 2931 --count;
2026 croak ("callbacks not yet supported"); 2932 }
2933 else if (SvTYPE (cb) == SVt_PVCV)
2934 {
2935 dSP;
2936 PUSHMARK (SP);
2937 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2938 PUTBACK;
2939 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2940 }
2027 2941
2028 SvREFCNT_dec (cb); 2942 SvREFCNT_dec (cb);
2029
2030 --count;
2031 } 2943 }
2032} 2944}
2033 2945
2034static void 2946static void
2035coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2947coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2036{ 2948{
2037 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2949 /* call $sem->adjust (0) to possibly wake up some other waiters */
2038 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2950 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2039} 2951}
2040 2952
2041static int 2953static int
2042slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2954slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2043{ 2955{
2044 AV *av = (AV *)frame->data; 2956 AV *av = (AV *)frame->data;
2045 SV *count_sv = AvARRAY (av)[0]; 2957 SV *count_sv = AvARRAY (av)[0];
2958 SV *coro_hv = SvRV (coro_current);
2046 2959
2960 /* if we are about to throw, don't actually acquire the lock, just throw */
2961 if (CORO_THROW)
2962 return 0;
2047 if (SvIVX (count_sv) > 0) 2963 else if (SvIVX (count_sv) > 0)
2048 { 2964 {
2049 SvSTATE_current->on_destroy = 0; 2965 frame->destroy = 0;
2966
2967 if (acquire)
2050 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2968 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2969 else
2970 coro_semaphore_adjust (aTHX_ av, 0);
2971
2051 return 0; 2972 return 0;
2052 } 2973 }
2053 else 2974 else
2054 { 2975 {
2055 int i; 2976 int i;
2056 /* if we were woken up but can't down, we look through the whole */ 2977 /* if we were woken up but can't down, we look through the whole */
2057 /* waiters list and only add us if we aren't in there already */ 2978 /* waiters list and only add us if we aren't in there already */
2058 /* this avoids some degenerate memory usage cases */ 2979 /* this avoids some degenerate memory usage cases */
2059 2980 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2060 for (i = 1; i <= AvFILLp (av); ++i)
2061 if (AvARRAY (av)[i] == SvRV (coro_current)) 2981 if (AvARRAY (av)[i] == coro_hv)
2062 return 1; 2982 return 1;
2063 2983
2064 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2984 av_push (av, SvREFCNT_inc (coro_hv));
2065 return 1; 2985 return 1;
2066 } 2986 }
2067} 2987}
2068 2988
2069static void 2989static int
2990slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2991{
2992 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2993}
2994
2995static int
2996slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2997{
2998 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2999}
3000
3001static void
2070slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3002slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2071{ 3003{
2072 AV *av = (AV *)SvRV (arg [0]); 3004 AV *av = (AV *)SvRV (arg [0]);
2073 3005
2074 if (SvIVX (AvARRAY (av)[0]) > 0) 3006 if (SvIVX (AvARRAY (av)[0]) > 0)
2075 { 3007 {
2076 frame->data = (void *)av; 3008 frame->data = (void *)av;
2077 frame->prepare = prepare_nop; 3009 frame->prepare = prepare_nop;
2078 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2079 } 3010 }
2080 else 3011 else
2081 { 3012 {
2082 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3013 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2083 3014
2084 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3015 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2085 frame->prepare = prepare_schedule; 3016 frame->prepare = prepare_schedule;
2086
2087 /* to avoid race conditions when a woken-up coro gets terminated */ 3017 /* to avoid race conditions when a woken-up coro gets terminated */
2088 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3018 /* we arrange for a temporary on_destroy that calls adjust (0) */
2089 assert (!SvSTATE_current->on_destroy);//D
2090 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3019 frame->destroy = coro_semaphore_destroy;
2091 } 3020 }
3021}
2092 3022
3023static void
3024slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3025{
3026 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2093 frame->check = slf_check_semaphore_down; 3027 frame->check = slf_check_semaphore_down;
3028}
2094 3029
3030static void
3031slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3032{
3033 if (items >= 2)
3034 {
3035 /* callback form */
3036 AV *av = (AV *)SvRV (arg [0]);
3037 SV *cb_cv = s_get_cv_croak (arg [1]);
3038
3039 av_push (av, SvREFCNT_inc_NN (cb_cv));
3040
3041 if (SvIVX (AvARRAY (av)[0]) > 0)
3042 coro_semaphore_adjust (aTHX_ av, 0);
3043
3044 frame->prepare = prepare_nop;
3045 frame->check = slf_check_nop;
3046 }
3047 else
3048 {
3049 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3050 frame->check = slf_check_semaphore_wait;
3051 }
3052}
3053
3054/* signal */
3055
3056static void
3057coro_signal_wake (pTHX_ AV *av, int count)
3058{
3059 SvIVX (AvARRAY (av)[0]) = 0;
3060
3061 /* now signal count waiters */
3062 while (count > 0 && AvFILLp (av) > 0)
3063 {
3064 SV *cb;
3065
3066 /* swap first two elements so we can shift a waiter */
3067 cb = AvARRAY (av)[0];
3068 AvARRAY (av)[0] = AvARRAY (av)[1];
3069 AvARRAY (av)[1] = cb;
3070
3071 cb = av_shift (av);
3072
3073 if (SvTYPE (cb) == SVt_PVCV)
3074 {
3075 dSP;
3076 PUSHMARK (SP);
3077 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3078 PUTBACK;
3079 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3080 }
3081 else
3082 {
3083 api_ready (aTHX_ cb);
3084 sv_setiv (cb, 0); /* signal waiter */
3085 }
3086
3087 SvREFCNT_dec (cb);
3088
3089 --count;
3090 }
3091}
3092
3093static int
3094slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3095{
3096 /* if we are about to throw, also stop waiting */
3097 return SvROK ((SV *)frame->data) && !CORO_THROW;
3098}
3099
3100static void
3101slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3102{
3103 AV *av = (AV *)SvRV (arg [0]);
3104
3105 if (items >= 2)
3106 {
3107 SV *cb_cv = s_get_cv_croak (arg [1]);
3108 av_push (av, SvREFCNT_inc_NN (cb_cv));
3109
3110 if (SvIVX (AvARRAY (av)[0]))
3111 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3112
3113 frame->prepare = prepare_nop;
3114 frame->check = slf_check_nop;
3115 }
3116 else if (SvIVX (AvARRAY (av)[0]))
3117 {
3118 SvIVX (AvARRAY (av)[0]) = 0;
3119 frame->prepare = prepare_nop;
3120 frame->check = slf_check_nop;
3121 }
3122 else
3123 {
3124 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3125
3126 av_push (av, waiter);
3127
3128 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3129 frame->prepare = prepare_schedule;
3130 frame->check = slf_check_signal_wait;
3131 }
2095} 3132}
2096 3133
2097/*****************************************************************************/ 3134/*****************************************************************************/
3135/* Coro::AIO */
2098 3136
2099#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3137#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2100 3138
2101/* create a closure from XS, returns a code reference */ 3139/* helper storage struct */
2102/* the arg can be accessed via GENSUB_ARG from the callback */ 3140struct io_state
2103/* the callback must use dXSARGS/XSRETURN */ 3141{
3142 int errorno;
3143 I32 laststype; /* U16 in 5.10.0 */
3144 int laststatval;
3145 Stat_t statcache;
3146};
3147
3148static void
3149coro_aio_callback (pTHX_ CV *cv)
3150{
3151 dXSARGS;
3152 AV *state = (AV *)S_GENSUB_ARG;
3153 SV *coro = av_pop (state);
3154 SV *data_sv = newSV (sizeof (struct io_state));
3155
3156 av_extend (state, items - 1);
3157
3158 sv_upgrade (data_sv, SVt_PV);
3159 SvCUR_set (data_sv, sizeof (struct io_state));
3160 SvPOK_only (data_sv);
3161
3162 {
3163 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3164
3165 data->errorno = errno;
3166 data->laststype = PL_laststype;
3167 data->laststatval = PL_laststatval;
3168 data->statcache = PL_statcache;
3169 }
3170
3171 /* now build the result vector out of all the parameters and the data_sv */
3172 {
3173 int i;
3174
3175 for (i = 0; i < items; ++i)
3176 av_push (state, SvREFCNT_inc_NN (ST (i)));
3177 }
3178
3179 av_push (state, data_sv);
3180
3181 api_ready (aTHX_ coro);
3182 SvREFCNT_dec (coro);
3183 SvREFCNT_dec ((AV *)state);
3184}
3185
3186static int
3187slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3188{
3189 AV *state = (AV *)frame->data;
3190
3191 /* if we are about to throw, return early */
3192 /* this does not cancel the aio request, but at least */
3193 /* it quickly returns */
3194 if (CORO_THROW)
3195 return 0;
3196
3197 /* one element that is an RV? repeat! */
3198 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3199 return 1;
3200
3201 /* restore status */
3202 {
3203 SV *data_sv = av_pop (state);
3204 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3205
3206 errno = data->errorno;
3207 PL_laststype = data->laststype;
3208 PL_laststatval = data->laststatval;
3209 PL_statcache = data->statcache;
3210
3211 SvREFCNT_dec (data_sv);
3212 }
3213
3214 /* push result values */
3215 {
3216 dSP;
3217 int i;
3218
3219 EXTEND (SP, AvFILLp (state) + 1);
3220 for (i = 0; i <= AvFILLp (state); ++i)
3221 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3222
3223 PUTBACK;
3224 }
3225
3226 return 0;
3227}
3228
3229static void
3230slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3231{
3232 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3233 SV *coro_hv = SvRV (coro_current);
3234 struct coro *coro = SvSTATE_hv (coro_hv);
3235
3236 /* put our coroutine id on the state arg */
3237 av_push (state, SvREFCNT_inc_NN (coro_hv));
3238
3239 /* first see whether we have a non-zero priority and set it as AIO prio */
3240 if (coro->prio)
3241 {
3242 dSP;
3243
3244 static SV *prio_cv;
3245 static SV *prio_sv;
3246
3247 if (ecb_expect_false (!prio_cv))
3248 {
3249 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3250 prio_sv = newSViv (0);
3251 }
3252
3253 PUSHMARK (SP);
3254 sv_setiv (prio_sv, coro->prio);
3255 XPUSHs (prio_sv);
3256
3257 PUTBACK;
3258 call_sv (prio_cv, G_VOID | G_DISCARD);
3259 }
3260
3261 /* now call the original request */
3262 {
3263 dSP;
3264 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3265 int i;
3266
3267 PUSHMARK (SP);
3268
3269 /* first push all args to the stack */
3270 EXTEND (SP, items + 1);
3271
3272 for (i = 0; i < items; ++i)
3273 PUSHs (arg [i]);
3274
3275 /* now push the callback closure */
3276 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3277
3278 /* now call the AIO function - we assume our request is uncancelable */
3279 PUTBACK;
3280 call_sv ((SV *)req, G_VOID | G_DISCARD);
3281 }
3282
3283 /* now that the request is going, we loop till we have a result */
3284 frame->data = (void *)state;
3285 frame->prepare = prepare_schedule;
3286 frame->check = slf_check_aio_req;
3287}
3288
3289static void
3290coro_aio_req_xs (pTHX_ CV *cv)
3291{
3292 dXSARGS;
3293
3294 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3295
3296 XSRETURN_EMPTY;
3297}
3298
3299/*****************************************************************************/
3300
3301#if CORO_CLONE
3302# include "clone.c"
3303#endif
3304
3305/*****************************************************************************/
3306
2104static SV * 3307static SV *
2105gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3308coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2106{ 3309{
2107 CV *cv = (CV *)NEWSV (0, 0); 3310 SV *coro_sv;
3311 struct coro *coro;
3312 MAGIC *mg;
3313 HV *hv;
3314 SV *cb;
3315 int i;
2108 3316
2109 sv_upgrade ((SV *)cv, SVt_PVCV); 3317 if (argc > 0)
3318 {
3319 cb = s_get_cv_croak (argv [0]);
2110 3320
2111 CvANON_on (cv); 3321 if (!is_coro)
2112 CvISXSUB_on (cv); 3322 {
2113 CvXSUB (cv) = xsub; 3323 if (CvISXSUB (cb))
2114 GENSUB_ARG = arg; 3324 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2115 3325
2116 return newRV_noinc ((SV *)cv); 3326 if (!CvROOT (cb))
2117} 3327 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3328 }
3329 }
2118 3330
2119/*****************************************************************************/ 3331 Newz (0, coro, 1, struct coro);
3332 coro->args = newAV ();
3333 coro->flags = CF_NEW;
3334
3335 if (coro_first) coro_first->prev = coro;
3336 coro->next = coro_first;
3337 coro_first = coro;
3338
3339 coro->hv = hv = newHV ();
3340 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3341 mg->mg_flags |= MGf_DUP;
3342 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3343
3344 if (argc > 0)
3345 {
3346 av_extend (coro->args, argc + is_coro - 1);
3347
3348 if (is_coro)
3349 {
3350 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3351 cb = (SV *)cv_coro_run;
3352 }
3353
3354 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3355
3356 for (i = 1; i < argc; i++)
3357 av_push (coro->args, newSVsv (argv [i]));
3358 }
3359
3360 return coro_sv;
3361}
3362
3363#ifndef __cplusplus
3364ecb_cold XS(boot_Coro__State);
3365#endif
3366
3367#if CORO_JIT
3368
3369static void ecb_noinline ecb_cold
3370pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3371{
3372 dSP;
3373 AV *av = newAV ();
3374
3375 av_store (av, 3, newSVuv (d));
3376 av_store (av, 2, newSVuv (c));
3377 av_store (av, 1, newSVuv (b));
3378 av_store (av, 0, newSVuv (a));
3379
3380 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3381
3382 PUTBACK;
3383}
3384
3385static void ecb_noinline ecb_cold
3386jit_init (pTHX)
3387{
3388 dSP;
3389 SV *load, *save;
3390 char *map_base;
3391 char *load_ptr, *save_ptr;
3392 STRLEN load_len, save_len, map_len;
3393 int count;
3394
3395 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3396
3397 PUSHMARK (SP);
3398#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3399# include "state.h"
3400#undef VARx
3401 count = call_pv ("Coro::State::_jit", G_ARRAY);
3402 SPAGAIN;
3403
3404 save = POPs; save_ptr = SvPVbyte (save, save_len);
3405 load = POPs; load_ptr = SvPVbyte (load, load_len);
3406
3407 map_len = load_len + save_len + 16;
3408
3409 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3410
3411 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3412
3413 load_perl_slots = (load_save_perl_slots_type)map_base;
3414 memcpy (map_base, load_ptr, load_len);
3415
3416 map_base += (load_len + 15) & ~15;
3417
3418 save_perl_slots = (load_save_perl_slots_type)map_base;
3419 memcpy (map_base, save_ptr, save_len);
3420
3421 /* we are good citizens and try to make the page read-only, so the evil evil */
3422 /* hackers might have it a bit more difficult */
3423 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3424
3425 PUTBACK;
3426 eval_pv ("undef &Coro::State::_jit", 1);
3427}
3428
3429#endif
2120 3430
2121MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3431MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2122 3432
2123PROTOTYPES: DISABLE 3433PROTOTYPES: DISABLE
2124 3434
… …
2129 coro_thx = PERL_GET_CONTEXT; 3439 coro_thx = PERL_GET_CONTEXT;
2130# endif 3440# endif
2131#endif 3441#endif
2132 BOOT_PAGESIZE; 3442 BOOT_PAGESIZE;
2133 3443
3444 /* perl defines these to check for existance first, but why it doesn't */
3445 /* just create them one at init time is not clear to me, except for */
3446 /* programs trying to delete them, but... */
3447 /* anyway, we declare this as invalid and make sure they are initialised here */
3448 DEFSV;
3449 ERRSV;
3450
3451 cctx_current = cctx_new_empty ();
3452
2134 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3453 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2135 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3454 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2136 3455
2137 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3456 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2138 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3457 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2157 3476
2158 { 3477 {
2159 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3478 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2160 3479
2161 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3480 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2162 hv_store_ent (PL_custom_op_names, slf, 3481 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2163 newSVpv ("coro_slf", 0), 0);
2164 3482
2165 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3483 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2166 hv_store_ent (PL_custom_op_descs, slf, 3484 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2167 newSVpv ("coro schedule like function", 0), 0);
2168 } 3485 }
2169 3486
2170 coroapi.ver = CORO_API_VERSION; 3487 coroapi.ver = CORO_API_VERSION;
2171 coroapi.rev = CORO_API_REVISION; 3488 coroapi.rev = CORO_API_REVISION;
2172 3489
… …
2177 coroapi.prepare_nop = prepare_nop; 3494 coroapi.prepare_nop = prepare_nop;
2178 coroapi.prepare_schedule = prepare_schedule; 3495 coroapi.prepare_schedule = prepare_schedule;
2179 coroapi.prepare_cede = prepare_cede; 3496 coroapi.prepare_cede = prepare_cede;
2180 coroapi.prepare_cede_notself = prepare_cede_notself; 3497 coroapi.prepare_cede_notself = prepare_cede_notself;
2181 3498
2182 { 3499 time_init (aTHX);
2183 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2184 3500
2185 if (!svp) croak ("Time::HiRes is required");
2186 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2187
2188 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2189 }
2190
2191 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3501 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3502#if CORO_JIT
3503 PUTBACK;
3504 jit_init (aTHX);
3505 SPAGAIN;
3506#endif
2192} 3507}
2193 3508
2194SV * 3509SV *
2195new (char *klass, ...) 3510new (SV *klass, ...)
3511 ALIAS:
3512 Coro::new = 1
2196 CODE: 3513 CODE:
2197{ 3514 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2198 struct coro *coro; 3515 OUTPUT:
2199 MAGIC *mg;
2200 HV *hv;
2201 int i;
2202
2203 Newz (0, coro, 1, struct coro);
2204 coro->args = newAV ();
2205 coro->flags = CF_NEW;
2206
2207 if (coro_first) coro_first->prev = coro;
2208 coro->next = coro_first;
2209 coro_first = coro;
2210
2211 coro->hv = hv = newHV ();
2212 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2213 mg->mg_flags |= MGf_DUP;
2214 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2215
2216 av_extend (coro->args, items - 1);
2217 for (i = 1; i < items; i++)
2218 av_push (coro->args, newSVsv (ST (i)));
2219}
2220 OUTPUT:
2221 RETVAL 3516 RETVAL
2222
2223void
2224_set_stacklevel (...)
2225 CODE:
2226 CORO_EXECUTE_SLF_XS (slf_init_set_stacklevel);
2227 3517
2228void 3518void
2229transfer (...) 3519transfer (...)
2230 PROTOTYPE: $$ 3520 PROTOTYPE: $$
2231 CODE: 3521 CODE:
2232 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3522 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2233 3523
2234bool
2235_destroy (SV *coro_sv)
2236 CODE:
2237 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2238 OUTPUT:
2239 RETVAL
2240
2241void 3524void
2242_exit (int code) 3525_exit (int code)
2243 PROTOTYPE: $ 3526 PROTOTYPE: $
2244 CODE: 3527 CODE:
2245 _exit (code); 3528 _exit (code);
3529
3530SV *
3531clone (Coro::State coro)
3532 CODE:
3533{
3534#if CORO_CLONE
3535 struct coro *ncoro = coro_clone (aTHX_ coro);
3536 MAGIC *mg;
3537 /* TODO: too much duplication */
3538 ncoro->hv = newHV ();
3539 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3540 mg->mg_flags |= MGf_DUP;
3541 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3542#else
3543 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3544#endif
3545}
3546 OUTPUT:
3547 RETVAL
2246 3548
2247int 3549int
2248cctx_stacksize (int new_stacksize = 0) 3550cctx_stacksize (int new_stacksize = 0)
2249 PROTOTYPE: ;$ 3551 PROTOTYPE: ;$
2250 CODE: 3552 CODE:
… …
2300 eval = 1 3602 eval = 1
2301 CODE: 3603 CODE:
2302{ 3604{
2303 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3605 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2304 { 3606 {
2305 struct coro temp; 3607 struct coro *current = SvSTATE_current;
3608 struct CoroSLF slf_save;
2306 3609
2307 if (!(coro->flags & CF_RUNNING)) 3610 if (current != coro)
2308 { 3611 {
2309 PUTBACK; 3612 PUTBACK;
2310 save_perl (aTHX_ &temp); 3613 save_perl (aTHX_ current);
2311 load_perl (aTHX_ coro); 3614 load_perl (aTHX_ coro);
3615 /* the coro is most likely in an active SLF call.
3616 * while not strictly required (the code we execute is
3617 * not allowed to call any SLF functions), it's cleaner
3618 * to reinitialise the slf_frame and restore it later.
3619 * This might one day allow us to actually do SLF calls
3620 * from code executed here.
3621 */
3622 slf_save = slf_frame;
3623 slf_frame.prepare = 0;
3624 SPAGAIN;
2312 } 3625 }
2313 3626
2314 {
2315 dSP;
2316 ENTER;
2317 SAVETMPS;
2318 PUTBACK;
2319 PUSHSTACK; 3627 PUSHSTACK;
3628
2320 PUSHMARK (SP); 3629 PUSHMARK (SP);
3630 PUTBACK;
2321 3631
2322 if (ix) 3632 if (ix)
2323 eval_sv (coderef, 0); 3633 eval_sv (coderef, 0);
2324 else 3634 else
2325 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3635 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 3636
2327 POPSTACK; 3637 POPSTACK;
2328 SPAGAIN; 3638 SPAGAIN;
2329 FREETMPS;
2330 LEAVE;
2331 PUTBACK;
2332 }
2333 3639
2334 if (!(coro->flags & CF_RUNNING)) 3640 if (current != coro)
2335 { 3641 {
3642 PUTBACK;
3643 slf_frame = slf_save;
2336 save_perl (aTHX_ coro); 3644 save_perl (aTHX_ coro);
2337 load_perl (aTHX_ &temp); 3645 load_perl (aTHX_ current);
2338 SPAGAIN; 3646 SPAGAIN;
2339 } 3647 }
2340 } 3648 }
2341} 3649}
2342 3650
… …
2345 PROTOTYPE: $ 3653 PROTOTYPE: $
2346 ALIAS: 3654 ALIAS:
2347 is_ready = CF_READY 3655 is_ready = CF_READY
2348 is_running = CF_RUNNING 3656 is_running = CF_RUNNING
2349 is_new = CF_NEW 3657 is_new = CF_NEW
2350 is_destroyed = CF_DESTROYED 3658 is_destroyed = CF_ZOMBIE
3659 is_zombie = CF_ZOMBIE
3660 is_suspended = CF_SUSPENDED
2351 CODE: 3661 CODE:
2352 RETVAL = boolSV (coro->flags & ix); 3662 RETVAL = boolSV (coro->flags & ix);
2353 OUTPUT: 3663 OUTPUT:
2354 RETVAL 3664 RETVAL
2355 3665
2356void 3666void
2357throw (Coro::State self, SV *throw = &PL_sv_undef) 3667throw (Coro::State self, SV *exception = &PL_sv_undef)
2358 PROTOTYPE: $;$ 3668 PROTOTYPE: $;$
2359 CODE: 3669 CODE:
3670{
3671 struct coro *current = SvSTATE_current;
3672 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2360 SvREFCNT_dec (self->throw); 3673 SvREFCNT_dec (*exceptionp);
2361 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3674 SvGETMAGIC (exception);
3675 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3676}
2362 3677
2363void 3678void
2364api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3679api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2365 PROTOTYPE: $;$ 3680 PROTOTYPE: $;$
2366 C_ARGS: aTHX_ coro, flags 3681 C_ARGS: aTHX_ coro, flags
2367 3682
2368SV * 3683SV *
2369has_cctx (Coro::State coro) 3684has_cctx (Coro::State coro)
2370 PROTOTYPE: $ 3685 PROTOTYPE: $
2371 CODE: 3686 CODE:
2372 RETVAL = boolSV (!!coro->cctx); 3687 /* maybe manage the running flag differently */
3688 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2373 OUTPUT: 3689 OUTPUT:
2374 RETVAL 3690 RETVAL
2375 3691
2376int 3692int
2377is_traced (Coro::State coro) 3693is_traced (Coro::State coro)
… …
2397 3713
2398void 3714void
2399force_cctx () 3715force_cctx ()
2400 PROTOTYPE: 3716 PROTOTYPE:
2401 CODE: 3717 CODE:
2402 SvSTATE_current->cctx->idle_sp = 0; 3718 cctx_current->idle_sp = 0;
2403 3719
2404void 3720void
2405swap_defsv (Coro::State self) 3721swap_defsv (Coro::State self)
2406 PROTOTYPE: $ 3722 PROTOTYPE: $
2407 ALIAS: 3723 ALIAS:
… …
2415 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3731 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2416 3732
2417 SV *tmp = *src; *src = *dst; *dst = tmp; 3733 SV *tmp = *src; *src = *dst; *dst = tmp;
2418 } 3734 }
2419 3735
3736void
3737cancel (Coro::State self)
3738 CODE:
3739 coro_state_destroy (aTHX_ self);
3740
3741SV *
3742enable_times (int enabled = enable_times)
3743 CODE:
3744{
3745 RETVAL = boolSV (enable_times);
3746
3747 if (enabled != enable_times)
3748 {
3749 enable_times = enabled;
3750
3751 coro_times_update ();
3752 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3753 }
3754}
3755 OUTPUT:
3756 RETVAL
3757
3758void
3759times (Coro::State self)
3760 PPCODE:
3761{
3762 struct coro *current = SvSTATE (coro_current);
3763
3764 if (ecb_expect_false (current == self))
3765 {
3766 coro_times_update ();
3767 coro_times_add (SvSTATE (coro_current));
3768 }
3769
3770 EXTEND (SP, 2);
3771 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3772 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3773
3774 if (ecb_expect_false (current == self))
3775 coro_times_sub (SvSTATE (coro_current));
3776}
3777
3778void
3779swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3780 CODE:
3781{
3782 struct coro *current = SvSTATE_current;
3783
3784 if (current == coro)
3785 SWAP_SVS (current);
3786
3787 if (!coro->swap_sv)
3788 coro->swap_sv = newAV ();
3789
3790 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3791 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3792
3793 if (current == coro)
3794 SWAP_SVS (current);
3795}
3796
3797
2420MODULE = Coro::State PACKAGE = Coro 3798MODULE = Coro::State PACKAGE = Coro
2421 3799
2422BOOT: 3800BOOT:
2423{ 3801{
2424 int i;
2425
2426 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2427 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3802 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2428 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3803 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2429 3804 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2430 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3805 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2431 SvREADONLY_on (coro_current); 3806 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3807 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3808 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3809 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2432 3810
3811 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3812 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3813 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3814 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3815
2433 coro_stash = gv_stashpv ("Coro", TRUE); 3816 coro_stash = gv_stashpv ("Coro", TRUE);
2434 3817
2435 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3818 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2436 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3819 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2437 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3820 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2438 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3821 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2439 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3822 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2440 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3823 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2441
2442 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2443 coro_ready[i] = newAV ();
2444 3824
2445 { 3825 {
2446 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3826 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2447 3827
2448 coroapi.schedule = api_schedule; 3828 coroapi.schedule = api_schedule;
3829 coroapi.schedule_to = api_schedule_to;
2449 coroapi.cede = api_cede; 3830 coroapi.cede = api_cede;
2450 coroapi.cede_notself = api_cede_notself; 3831 coroapi.cede_notself = api_cede_notself;
2451 coroapi.ready = api_ready; 3832 coroapi.ready = api_ready;
2452 coroapi.is_ready = api_is_ready; 3833 coroapi.is_ready = api_is_ready;
2453 coroapi.nready = coro_nready; 3834 coroapi.nready = coro_nready;
2454 coroapi.current = coro_current; 3835 coroapi.current = coro_current;
2455 3836
2456 GCoroAPI = &coroapi; 3837 /*GCoroAPI = &coroapi;*/
2457 sv_setiv (sv, (IV)&coroapi); 3838 sv_setiv (sv, (IV)&coroapi);
2458 SvREADONLY_on (sv); 3839 SvREADONLY_on (sv);
2459 } 3840 }
2460} 3841}
3842
3843SV *
3844async (...)
3845 PROTOTYPE: &@
3846 CODE:
3847 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3848 api_ready (aTHX_ RETVAL);
3849 OUTPUT:
3850 RETVAL
3851
3852void
3853_destroy (Coro::State coro)
3854 CODE:
3855 /* used by the manager thread */
3856 coro_state_destroy (aTHX_ coro);
3857
3858void
3859on_destroy (Coro::State coro, SV *cb)
3860 CODE:
3861 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3862
3863void
3864join (...)
3865 CODE:
3866 CORO_EXECUTE_SLF_XS (slf_init_join);
3867
3868void
3869terminate (...)
3870 CODE:
3871 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3872
3873void
3874cancel (...)
3875 CODE:
3876 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3877
3878int
3879safe_cancel (Coro::State self, ...)
3880 C_ARGS: aTHX_ self, &ST (1), items - 1
2461 3881
2462void 3882void
2463schedule (...) 3883schedule (...)
2464 CODE: 3884 CODE:
2465 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3885 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3886
3887void
3888schedule_to (...)
3889 CODE:
3890 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3891
3892void
3893cede_to (...)
3894 CODE:
3895 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2466 3896
2467void 3897void
2468cede (...) 3898cede (...)
2469 CODE: 3899 CODE:
2470 CORO_EXECUTE_SLF_XS (slf_init_cede); 3900 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2484void 3914void
2485_set_readyhook (SV *hook) 3915_set_readyhook (SV *hook)
2486 PROTOTYPE: $ 3916 PROTOTYPE: $
2487 CODE: 3917 CODE:
2488 SvREFCNT_dec (coro_readyhook); 3918 SvREFCNT_dec (coro_readyhook);
3919 SvGETMAGIC (hook);
3920 if (SvOK (hook))
3921 {
2489 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3922 coro_readyhook = newSVsv (hook);
3923 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3924 }
3925 else
3926 {
3927 coro_readyhook = 0;
3928 CORO_READYHOOK = 0;
3929 }
2490 3930
2491int 3931int
2492prio (Coro::State coro, int newprio = 0) 3932prio (Coro::State coro, int newprio = 0)
2493 PROTOTYPE: $;$ 3933 PROTOTYPE: $;$
2494 ALIAS: 3934 ALIAS:
… …
2500 if (items > 1) 3940 if (items > 1)
2501 { 3941 {
2502 if (ix) 3942 if (ix)
2503 newprio = coro->prio - newprio; 3943 newprio = coro->prio - newprio;
2504 3944
2505 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3945 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2506 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3946 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2507 3947
2508 coro->prio = newprio; 3948 coro->prio = newprio;
2509 } 3949 }
2510} 3950}
2511 OUTPUT: 3951 OUTPUT:
… …
2525 CODE: 3965 CODE:
2526 RETVAL = coro_nready; 3966 RETVAL = coro_nready;
2527 OUTPUT: 3967 OUTPUT:
2528 RETVAL 3968 RETVAL
2529 3969
2530# for async_pool speedup
2531void 3970void
2532_pool_1 (SV *cb) 3971suspend (Coro::State self)
3972 PROTOTYPE: $
2533 CODE: 3973 CODE:
2534{ 3974 self->flags |= CF_SUSPENDED;
2535 HV *hv = (HV *)SvRV (coro_current);
2536 struct coro *coro = SvSTATE_hv ((SV *)hv);
2537 AV *defav = GvAV (PL_defgv);
2538 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2539 AV *invoke_av;
2540 int i, len;
2541 3975
2542 if (!invoke) 3976void
3977resume (Coro::State self)
3978 PROTOTYPE: $
3979 CODE:
3980 self->flags &= ~CF_SUSPENDED;
3981
3982void
3983_pool_handler (...)
3984 CODE:
3985 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3986
3987void
3988async_pool (SV *cv, ...)
3989 PROTOTYPE: &@
3990 PPCODE:
3991{
3992 HV *hv = (HV *)av_pop (av_async_pool);
3993 AV *av = newAV ();
3994 SV *cb = ST (0);
3995 int i;
3996
3997 av_extend (av, items - 2);
3998 for (i = 1; i < items; ++i)
3999 av_push (av, SvREFCNT_inc_NN (ST (i)));
4000
4001 if ((SV *)hv == &PL_sv_undef)
2543 { 4002 {
2544 SV *old = PL_diehook; 4003 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2545 PL_diehook = 0; 4004 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2546 SvREFCNT_dec (old); 4005 SvREFCNT_dec (sv);
2547 croak ("\3async_pool terminate\2\n");
2548 } 4006 }
2549 4007
2550 SvREFCNT_dec (coro->saved_deffh);
2551 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2552
2553 hv_store (hv, "desc", sizeof ("desc") - 1,
2554 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2555
2556 invoke_av = (AV *)SvRV (invoke);
2557 len = av_len (invoke_av);
2558
2559 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2560
2561 if (len > 0)
2562 { 4008 {
2563 av_fill (defav, len - 1); 4009 struct coro *coro = SvSTATE_hv (hv);
2564 for (i = 0; i < len; ++i) 4010
2565 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4011 assert (!coro->invoke_cb);
4012 assert (!coro->invoke_av);
4013 coro->invoke_cb = SvREFCNT_inc (cb);
4014 coro->invoke_av = av;
2566 } 4015 }
4016
4017 api_ready (aTHX_ (SV *)hv);
4018
4019 if (GIMME_V != G_VOID)
4020 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4021 else
4022 SvREFCNT_dec (hv);
2567} 4023}
4024
4025SV *
4026rouse_cb ()
4027 PROTOTYPE:
4028 CODE:
4029 RETVAL = coro_new_rouse_cb (aTHX);
4030 OUTPUT:
4031 RETVAL
2568 4032
2569void 4033void
2570_pool_2 (SV *cb) 4034rouse_wait (...)
4035 PROTOTYPE: ;$
4036 PPCODE:
4037 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4038
4039void
4040on_enter (SV *block)
4041 ALIAS:
4042 on_leave = 1
4043 PROTOTYPE: &
2571 CODE: 4044 CODE:
2572{ 4045{
2573 struct coro *coro = SvSTATE_current; 4046 struct coro *coro = SvSTATE_current;
4047 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2574 4048
2575 sv_setsv (cb, &PL_sv_undef); 4049 block = s_get_cv_croak (block);
2576 4050
2577 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4051 if (!*avp)
2578 coro->saved_deffh = 0;
2579
2580 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2581 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2582 {
2583 SV *old = PL_diehook;
2584 PL_diehook = 0;
2585 SvREFCNT_dec (old);
2586 croak ("\3async_pool terminate\2\n");
2587 }
2588
2589 av_clear (GvAV (PL_defgv));
2590 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2591 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2592
2593 coro->prio = 0;
2594
2595 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2596 api_trace (aTHX_ coro_current, 0);
2597
2598 av_push (av_async_pool, newSVsv (coro_current));
2599}
2600
2601
2602MODULE = Coro::State PACKAGE = Coro::AIO
2603
2604void
2605_get_state (SV *self)
2606 PROTOTYPE: $
2607 PPCODE:
2608{
2609 AV *defav = GvAV (PL_defgv);
2610 AV *av = newAV (); 4052 *avp = newAV ();
2611 int i;
2612 SV *data_sv = newSV (sizeof (struct io_state));
2613 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2614 SvCUR_set (data_sv, sizeof (struct io_state));
2615 SvPOK_only (data_sv);
2616 4053
2617 data->errorno = errno; 4054 av_push (*avp, SvREFCNT_inc (block));
2618 data->laststype = PL_laststype;
2619 data->laststatval = PL_laststatval;
2620 data->statcache = PL_statcache;
2621 4055
2622 av_extend (av, AvFILLp (defav) + 1 + 1); 4056 if (!ix)
4057 on_enterleave_call (aTHX_ block);
2623 4058
2624 for (i = 0; i <= AvFILLp (defav); ++i) 4059 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2625 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4060 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2626 4061 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2627 av_push (av, data_sv);
2628
2629 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2630
2631 api_ready (aTHX_ self);
2632}
2633
2634void
2635_set_state (SV *state)
2636 PROTOTYPE: $
2637 PPCODE:
2638{
2639 AV *av = (AV *)SvRV (state);
2640 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2641 int i;
2642
2643 errno = data->errorno;
2644 PL_laststype = data->laststype;
2645 PL_laststatval = data->laststatval;
2646 PL_statcache = data->statcache;
2647
2648 EXTEND (SP, AvFILLp (av));
2649 for (i = 0; i < AvFILLp (av); ++i)
2650 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2651}
2652
2653
2654MODULE = Coro::State PACKAGE = Coro::AnyEvent
2655
2656BOOT:
2657 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2658
2659void
2660_schedule (...)
2661 CODE:
2662{
2663 static int incede;
2664
2665 api_cede_notself (aTHX);
2666
2667 ++incede;
2668 while (coro_nready >= incede && api_cede (aTHX))
2669 ;
2670
2671 sv_setsv (sv_activity, &PL_sv_undef);
2672 if (coro_nready >= incede)
2673 {
2674 PUSHMARK (SP);
2675 PUTBACK;
2676 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2677 SPAGAIN;
2678 }
2679
2680 --incede;
2681} 4062}
2682 4063
2683 4064
2684MODULE = Coro::State PACKAGE = PerlIO::cede 4065MODULE = Coro::State PACKAGE = PerlIO::cede
2685 4066
2686BOOT: 4067BOOT:
2687 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4068 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2688 4069
4070
2689MODULE = Coro::State PACKAGE = Coro::Semaphore 4071MODULE = Coro::State PACKAGE = Coro::Semaphore
2690 4072
2691SV * 4073SV *
2692new (SV *klass, SV *count_ = 0) 4074new (SV *klass, SV *count = 0)
2693 CODE: 4075 CODE:
2694{ 4076{
2695 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4077 int semcnt = 1;
2696 AV *av = newAV (); 4078
2697 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4079 if (count)
2698 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4080 {
4081 SvGETMAGIC (count);
4082
4083 if (SvOK (count))
4084 semcnt = SvIV (count);
4085 }
4086
4087 RETVAL = sv_bless (
4088 coro_waitarray_new (aTHX_ semcnt),
4089 GvSTASH (CvGV (cv))
4090 );
2699} 4091}
4092 OUTPUT:
4093 RETVAL
4094
4095# helper for Coro::Channel and others
4096SV *
4097_alloc (int count)
4098 CODE:
4099 RETVAL = coro_waitarray_new (aTHX_ count);
2700 OUTPUT: 4100 OUTPUT:
2701 RETVAL 4101 RETVAL
2702 4102
2703SV * 4103SV *
2704count (SV *self) 4104count (SV *self)
… …
2713 adjust = 1 4113 adjust = 1
2714 CODE: 4114 CODE:
2715 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4115 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2716 4116
2717void 4117void
2718down (SV *self) 4118down (...)
2719 CODE: 4119 CODE:
2720 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4120 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4121
4122void
4123wait (...)
4124 CODE:
4125 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2721 4126
2722void 4127void
2723try (SV *self) 4128try (SV *self)
2724 PPCODE: 4129 PPCODE:
2725{ 4130{
… …
2737 XSRETURN_NO; 4142 XSRETURN_NO;
2738} 4143}
2739 4144
2740void 4145void
2741waiters (SV *self) 4146waiters (SV *self)
2742 CODE: 4147 PPCODE:
2743{ 4148{
2744 AV *av = (AV *)SvRV (self); 4149 AV *av = (AV *)SvRV (self);
4150 int wcount = AvFILLp (av) + 1 - 1;
2745 4151
2746 if (GIMME_V == G_SCALAR) 4152 if (GIMME_V == G_SCALAR)
2747 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4153 XPUSHs (sv_2mortal (newSViv (wcount)));
2748 else 4154 else
2749 { 4155 {
2750 int i; 4156 int i;
2751 EXTEND (SP, AvFILLp (av) + 1 - 1); 4157 EXTEND (SP, wcount);
2752 for (i = 1; i <= AvFILLp (av); ++i) 4158 for (i = 1; i <= wcount; ++i)
2753 PUSHs (newSVsv (AvARRAY (av)[i])); 4159 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2754 } 4160 }
2755} 4161}
2756 4162
4163MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4164
4165void
4166_may_delete (SV *sem, int count, unsigned int extra_refs)
4167 PPCODE:
4168{
4169 AV *av = (AV *)SvRV (sem);
4170
4171 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4172 && AvFILLp (av) == 0 /* no waiters, just count */
4173 && SvIV (AvARRAY (av)[0]) == count)
4174 XSRETURN_YES;
4175
4176 XSRETURN_NO;
4177}
4178
4179MODULE = Coro::State PACKAGE = Coro::Signal
4180
4181SV *
4182new (SV *klass)
4183 CODE:
4184 RETVAL = sv_bless (
4185 coro_waitarray_new (aTHX_ 0),
4186 GvSTASH (CvGV (cv))
4187 );
4188 OUTPUT:
4189 RETVAL
4190
4191void
4192wait (...)
4193 CODE:
4194 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4195
4196void
4197broadcast (SV *self)
4198 CODE:
4199{
4200 AV *av = (AV *)SvRV (self);
4201 coro_signal_wake (aTHX_ av, AvFILLp (av));
4202}
4203
4204void
4205send (SV *self)
4206 CODE:
4207{
4208 AV *av = (AV *)SvRV (self);
4209
4210 if (AvFILLp (av))
4211 coro_signal_wake (aTHX_ av, 1);
4212 else
4213 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4214}
4215
4216IV
4217awaited (SV *self)
4218 CODE:
4219 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4220 OUTPUT:
4221 RETVAL
4222
4223
4224MODULE = Coro::State PACKAGE = Coro::AnyEvent
4225
4226BOOT:
4227 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4228
4229void
4230_schedule (...)
4231 CODE:
4232{
4233 static int incede;
4234
4235 api_cede_notself (aTHX);
4236
4237 ++incede;
4238 while (coro_nready >= incede && api_cede (aTHX))
4239 ;
4240
4241 sv_setsv (sv_activity, &PL_sv_undef);
4242 if (coro_nready >= incede)
4243 {
4244 PUSHMARK (SP);
4245 PUTBACK;
4246 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4247 }
4248
4249 --incede;
4250}
4251
4252
4253MODULE = Coro::State PACKAGE = Coro::AIO
4254
4255void
4256_register (char *target, char *proto, SV *req)
4257 CODE:
4258{
4259 SV *req_cv = s_get_cv_croak (req);
4260 /* newXSproto doesn't return the CV on 5.8 */
4261 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4262 sv_setpv ((SV *)slf_cv, proto);
4263 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4264}
4265
4266MODULE = Coro::State PACKAGE = Coro::Select
4267
4268void
4269patch_pp_sselect ()
4270 CODE:
4271 if (!coro_old_pp_sselect)
4272 {
4273 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4274 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4275 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4276 }
4277
4278void
4279unpatch_pp_sselect ()
4280 CODE:
4281 if (coro_old_pp_sselect)
4282 {
4283 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4284 coro_old_pp_sselect = 0;
4285 }
4286

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