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Comparing Coro/Coro/State.xs (file contents):
Revision 1.328 by root, Tue Nov 25 09:49:43 2008 UTC vs.
Revision 1.418 by root, Mon Feb 20 00:03:07 2012 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
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 */ 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) && PERL_SUBVERSION >= (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#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif 70#endif
114 71
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
117#endif 74#endif
… …
133#else 90#else
134# define dSTACKLEVEL volatile void *stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel) 92# define STACKLEVEL ((void *)&stacklevel)
136#endif 93#endif
137 94
138#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
139
140#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
144#else
145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
152
153#define NOINLINE attribute ((noinline))
154 96
155#include "CoroAPI.h" 97#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */ 98#define GCoroAPI (&coroapi) /* very sneaky */
157 99
158#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
159# if CORO_PTHREAD 101# if CORO_PTHREAD
160static void *coro_thx; 102static void *coro_thx;
161# endif 103# endif
162#endif 104#endif
163 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
164static 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]);
165 121
166/* we hijack an hopefully unused CV flag for our purposes */ 122/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000 123#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX); 124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
169 126
170static U32 cctx_gen; 127static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
172static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
173static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
… …
190static SV *sv_pool_size; 147static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */ 148static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */ 149static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */ 150static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler; 151static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196 152
197/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
198static SV *sv_activity; 154static SV *sv_activity;
199 155
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
200static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
201static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
202 164
203enum { 165enum
166{
204 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
218 void *sptr; 181 void *sptr;
219 size_t ssize; 182 size_t ssize;
220 183
221 /* cpu state */ 184 /* cpu state */
222 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
223 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
224 JMPENV *top_env; 189 JMPENV *top_env;
225 coro_context cctx; 190 coro_context cctx;
226 191
227 U32 gen; 192 U32 gen;
228#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
229 int valgrind_id; 194 int valgrind_id;
230#endif 195#endif
231 unsigned char flags; 196 unsigned char flags;
232} coro_cctx; 197} coro_cctx;
233 198
234coro_cctx *cctx_current; /* the currently running cctx */ 199static coro_cctx *cctx_current; /* the currently running cctx */
235 200
236/*****************************************************************************/ 201/*****************************************************************************/
237 202
203static MGVTBL coro_state_vtbl;
204
238enum { 205enum
206{
239 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
240 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
241 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
242 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) */
243}; 213};
244 214
245/* 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 */
246typedef struct 216typedef struct
247{ 217{
248 SV *defsv;
249 AV *defav;
250 SV *errsv;
251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 218#define VARx(name,expr,type) type name;
254# include "state.h" 219# include "state.h"
255#undef VAR 220#undef VARx
256} perl_slots; 221} perl_slots;
257 222
223/* how many context stack entries do we need for perl_slots */
258#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))
259 225
260/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
261struct coro { 227struct coro
228{
262 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
264 234
265 /* state data */ 235 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack; 237 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
269 239
270 CV *startcv; /* the CV to execute */ 240 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276 244
277 /* statistics */ 245 /* statistics */
278 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
279 247
280 /* coro process data */ 248 /* coro process data */
281 int prio; 249 int prio;
282 SV *except; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
283 SV *rouse_cb; 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 */
284 254
285 /* async_pool */ 255 /* async_pool */
286 SV *saved_deffh; 256 SV *saved_deffh;
287 SV *invoke_cb; 257 SV *invoke_cb;
288 AV *invoke_av; 258 AV *invoke_av;
289 259
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;
269
290 /* linked list */ 270 /* linked list */
291 struct coro *next, *prev; 271 struct coro *next, *prev;
292}; 272};
293 273
294typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
295typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
296 276
297/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
301 281
302/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
303 283
304#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
305#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
306#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
307#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
308#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
309#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
310 290
311/* for Coro.pm */ 291/* for Coro.pm */
312static SV *coro_current; 292static SV *coro_current;
313static SV *coro_readyhook; 293static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
315static CV *cv_coro_run, *cv_coro_terminate; 295static CV *cv_coro_run;
316static struct coro *coro_first; 296static struct coro *coro_first;
317#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
318 298
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
319/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
320 395
321static SV * 396static SV * ecb_noinline
322coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
323{ 398{
324#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
325 /* 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 */
326 get_sv (name, create); 401 get_sv (name, create);
327#endif 402#endif
328 return get_sv (name, create); 403 return get_sv (name, create);
329} 404}
330 405
331static AV * 406static AV * ecb_noinline
332coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
333{ 408{
334#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
335 /* 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 */
336 get_av (name, create); 411 get_av (name, create);
337#endif 412#endif
338 return get_av (name, create); 413 return get_av (name, create);
339} 414}
340 415
341static HV * 416static HV * ecb_noinline
342coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
343{ 418{
344#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
345 /* 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 */
346 get_hv (name, create); 421 get_hv (name, create);
347#endif 422#endif
348 return get_hv (name, create); 423 return get_hv (name, create);
349} 424}
350 425
351/* may croak */ 426ecb_inline void
352INLINE CV * 427coro_times_update (void)
353coro_sv_2cv (pTHX_ SV *sv)
354{ 428{
355 HV *st; 429#ifdef coro_clock_gettime
356 GV *gvp; 430 struct timespec ts;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359 431
360static AV * 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 *
361coro_derive_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
362{ 533{
363 AV *padlist = CvPADLIST (cv); 534 AV *padlist = CvPADLIST (cv);
364 AV *newpadlist, *newpad; 535 AV *newpadlist, *newpad;
365 536
… …
371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 542 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
372#endif 543#endif
373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 544 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
374 --AvFILLp (padlist); 545 --AvFILLp (padlist);
375 546
376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 547 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
377 av_store (newpadlist, 1, (SV *)newpad); 548 av_store (newpadlist, 1, (SV *)newpad);
378 549
379 return newpadlist; 550 return newpadlist;
380} 551}
381 552
382static void 553ecb_inline void
383free_padlist (pTHX_ AV *padlist) 554free_padlist (pTHX_ AV *padlist)
384{ 555{
385 /* may be during global destruction */ 556 /* may be during global destruction */
386 if (SvREFCNT (padlist)) 557 if (!IN_DESTRUCT)
387 { 558 {
388 I32 i = AvFILLp (padlist); 559 I32 i = AvFILLp (padlist);
389 while (i >= 0) 560
561 while (i > 0) /* special-case index 0 */
390 { 562 {
391 SV **svp = av_fetch (padlist, i--, FALSE); 563 /* we try to be extra-careful here */
392 if (svp) 564 AV *av = (AV *)AvARRAY (padlist)[i--];
393 { 565 I32 j = AvFILLp (av);
394 SV *sv; 566
395 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 567 while (j >= 0)
568 SvREFCNT_dec (AvARRAY (av)[j--]);
569
570 AvFILLp (av) = -1;
396 SvREFCNT_dec (sv); 571 SvREFCNT_dec (av);
397
398 SvREFCNT_dec (*svp);
399 }
400 } 572 }
401 573
574 SvREFCNT_dec (AvARRAY (padlist)[0]);
575
576 AvFILLp (padlist) = -1;
402 SvREFCNT_dec ((SV*)padlist); 577 SvREFCNT_dec ((SV*)padlist);
403 } 578 }
404} 579}
405 580
406static int 581static int
407coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 582coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
408{ 583{
409 AV *padlist; 584 AV *padlist;
410 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;
411 590
412 /* casting is fun. */ 591 /* casting is fun. */
413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 592 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
414 free_padlist (aTHX_ padlist); 593 free_padlist (aTHX_ padlist);
415 594
416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 595 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
417 596
418 return 0; 597 return 0;
419} 598}
420
421#define CORO_MAGIC_type_cv 26
422#define CORO_MAGIC_type_state PERL_MAGIC_ext
423 599
424static MGVTBL coro_cv_vtbl = { 600static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0, 601 0, 0, 0, 0,
426 coro_cv_free 602 coro_cv_free
427}; 603};
428 604
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
471
472/* the next two functions merely cache the padlists */ 605/* the next two functions merely cache the padlists */
473static void 606ecb_inline void
474get_padlist (pTHX_ CV *cv) 607get_padlist (pTHX_ CV *cv)
475{ 608{
476 MAGIC *mg = CORO_MAGIC_cv (cv); 609 MAGIC *mg = CORO_MAGIC_cv (cv);
477 AV *av; 610 AV *av;
478 611
479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 612 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 613 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
481 else 614 else
482 { 615 {
483#if CORO_PREFER_PERL_FUNCTIONS 616#if CORO_PREFER_PERL_FUNCTIONS
484 /* this is probably cleaner? but also slower! */ 617 /* this is probably cleaner? but also slower! */
… …
491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 624 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
492#endif 625#endif
493 } 626 }
494} 627}
495 628
496static void 629ecb_inline void
497put_padlist (pTHX_ CV *cv) 630put_padlist (pTHX_ CV *cv)
498{ 631{
499 MAGIC *mg = CORO_MAGIC_cv (cv); 632 MAGIC *mg = CORO_MAGIC_cv (cv);
500 AV *av; 633 AV *av;
501 634
502 if (expect_false (!mg)) 635 if (ecb_expect_false (!mg))
503 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);
504 637
505 av = (AV *)mg->mg_obj; 638 av = (AV *)mg->mg_obj;
506 639
507 if (expect_false (AvFILLp (av) >= AvMAX (av))) 640 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
508 av_extend (av, AvMAX (av) + 1); 641 av_extend (av, AvFILLp (av) + 1);
509 642
510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 643 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
511} 644}
512 645
513/** 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);
514 702
515static void 703static void
516load_perl (pTHX_ Coro__State c) 704load_perl (pTHX_ Coro__State c)
517{ 705{
518 perl_slots *slot = c->slot; 706 perl_slots *slot = c->slot;
519 c->slot = 0; 707 c->slot = 0;
520 708
521 PL_mainstack = c->mainstack; 709 PL_mainstack = c->mainstack;
522 710
523 GvSV (PL_defgv) = slot->defsv; 711#if CORO_JIT
524 GvAV (PL_defgv) = slot->defav; 712 load_perl_slots (slot);
525 GvSV (PL_errgv) = slot->errsv; 713#else
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
529 #define VAR(name,type) PL_ ## name = slot->name; 714 #define VARx(name,expr,type) expr = slot->name;
530 # include "state.h" 715 # include "state.h"
531 #undef VAR 716 #undef VARx
717#endif
532 718
533 { 719 {
534 dSP; 720 dSP;
535 721
536 CV *cv; 722 CV *cv;
537 723
538 /* now do the ugly restore mess */ 724 /* now do the ugly restore mess */
539 while (expect_true (cv = (CV *)POPs)) 725 while (ecb_expect_true (cv = (CV *)POPs))
540 { 726 {
541 put_padlist (aTHX_ cv); /* mark this padlist as available */ 727 put_padlist (aTHX_ cv); /* mark this padlist as available */
542 CvDEPTH (cv) = PTR2IV (POPs); 728 CvDEPTH (cv) = PTR2IV (POPs);
543 CvPADLIST (cv) = (AV *)POPs; 729 CvPADLIST (cv) = (AV *)POPs;
544 } 730 }
… …
546 PUTBACK; 732 PUTBACK;
547 } 733 }
548 734
549 slf_frame = c->slf_frame; 735 slf_frame = c->slf_frame;
550 CORO_THROW = c->except; 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);
551} 755}
552 756
553static void 757static void
554save_perl (pTHX_ Coro__State c) 758save_perl (pTHX_ Coro__State c)
555{ 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
556 c->except = CORO_THROW; 778 c->except = CORO_THROW;
557 c->slf_frame = slf_frame; 779 c->slf_frame = slf_frame;
558 780
559 { 781 {
560 dSP; 782 dSP;
… …
569 791
570 XPUSHs (Nullsv); 792 XPUSHs (Nullsv);
571 /* this loop was inspired by pp_caller */ 793 /* this loop was inspired by pp_caller */
572 for (;;) 794 for (;;)
573 { 795 {
574 while (expect_true (cxix >= 0)) 796 while (ecb_expect_true (cxix >= 0))
575 { 797 {
576 PERL_CONTEXT *cx = &ccstk[cxix--]; 798 PERL_CONTEXT *cx = &ccstk[cxix--];
577 799
578 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))
579 { 801 {
580 CV *cv = cx->blk_sub.cv; 802 CV *cv = cx->blk_sub.cv;
581 803
582 if (expect_true (CvDEPTH (cv))) 804 if (ecb_expect_true (CvDEPTH (cv)))
583 { 805 {
584 EXTEND (SP, 3); 806 EXTEND (SP, 3);
585 PUSHs ((SV *)CvPADLIST (cv)); 807 PUSHs ((SV *)CvPADLIST (cv));
586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 808 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
587 PUSHs ((SV *)cv); 809 PUSHs ((SV *)cv);
… …
590 get_padlist (aTHX_ cv); 812 get_padlist (aTHX_ cv);
591 } 813 }
592 } 814 }
593 } 815 }
594 816
595 if (expect_true (top_si->si_type == PERLSI_MAIN)) 817 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
596 break; 818 break;
597 819
598 top_si = top_si->si_prev; 820 top_si = top_si->si_prev;
599 ccstk = top_si->si_cxstack; 821 ccstk = top_si->si_cxstack;
600 cxix = top_si->si_cxix; 822 cxix = top_si->si_cxix;
… …
602 824
603 PUTBACK; 825 PUTBACK;
604 } 826 }
605 827
606 /* allocate some space on the context stack for our purposes */ 828 /* allocate some space on the context stack for our purposes */
607 /* we manually unroll here, as usually 2 slots is enough */ 829 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 { 830 {
612 int i; 831 unsigned int i;
832
613 for (i = 3; i < SLOT_COUNT; ++i) 833 for (i = 0; i < SLOT_COUNT; ++i)
614 CXINC; 834 CXINC;
615 } 835
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 836 cxstack_ix -= SLOT_COUNT; /* undo allocation */
837 }
617 838
618 c->mainstack = PL_mainstack; 839 c->mainstack = PL_mainstack;
619 840
620 { 841 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 842 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622 843
623 slot->defav = GvAV (PL_defgv); 844#if CORO_JIT
624 slot->defsv = DEFSV; 845 save_perl_slots (slot);
625 slot->errsv = ERRSV; 846#else
626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
628
629 #define VAR(name,type) slot->name = PL_ ## name; 847 #define VARx(name,expr,type) slot->name = expr;
630 # include "state.h" 848 # include "state.h"
631 #undef VAR 849 #undef VARx
850#endif
632 } 851 }
633} 852}
634 853
635/* 854/*
636 * allocate various perl stacks. This is almost an exact copy 855 * allocate various perl stacks. This is almost an exact copy
… …
642# define coro_init_stacks(thx) init_stacks () 861# define coro_init_stacks(thx) init_stacks ()
643#else 862#else
644static void 863static void
645coro_init_stacks (pTHX) 864coro_init_stacks (pTHX)
646{ 865{
647 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() */
648 PL_curstackinfo->si_type = PERLSI_MAIN; 867 PL_curstackinfo->si_type = PERLSI_MAIN;
649 PL_curstack = PL_curstackinfo->si_stack; 868 PL_curstack = PL_curstackinfo->si_stack;
650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 869 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
651 870
652 PL_stack_base = AvARRAY(PL_curstack); 871 PL_stack_base = AvARRAY(PL_curstack);
… …
667#endif 886#endif
668 887
669 New(54,PL_scopestack,8,I32); 888 New(54,PL_scopestack,8,I32);
670 PL_scopestack_ix = 0; 889 PL_scopestack_ix = 0;
671 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
672 894
673 New(54,PL_savestack,24,ANY); 895 New(54,PL_savestack,24,ANY);
674 PL_savestack_ix = 0; 896 PL_savestack_ix = 0;
675 PL_savestack_max = 24; 897 PL_savestack_max = 24;
676 898
… …
704 } 926 }
705 927
706 Safefree (PL_tmps_stack); 928 Safefree (PL_tmps_stack);
707 Safefree (PL_markstack); 929 Safefree (PL_markstack);
708 Safefree (PL_scopestack); 930 Safefree (PL_scopestack);
931#if HAS_SCOPESTACK_NAME
932 Safefree (PL_scopestack_name);
933#endif
709 Safefree (PL_savestack); 934 Safefree (PL_savestack);
710#if !PERL_VERSION_ATLEAST (5,10,0) 935#if !PERL_VERSION_ATLEAST (5,10,0)
711 Safefree (PL_retstack); 936 Safefree (PL_retstack);
712#endif 937#endif
713} 938}
… …
759#endif 984#endif
760 985
761/* 986/*
762 * This overrides the default magic get method of %SIG elements. 987 * This overrides the default magic get method of %SIG elements.
763 * 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
764 * 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),
765 * readback here. 990 * we just provide our own readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */ 991 */
770static int 992static int ecb_cold
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 993coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{ 994{
773 const char *s = MgPV_nolen_const (mg); 995 const char *s = MgPV_nolen_const (mg);
774 996
775 if (*s == '_') 997 if (*s == '_')
… …
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1001 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1002 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781 1003
782 if (svp) 1004 if (svp)
783 { 1005 {
784 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);
785 return 0; 1016 return 0;
786 } 1017 }
787 } 1018 }
788 1019
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790} 1021}
791 1022
792static int 1023static int ecb_cold
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{ 1025{
795 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
796 1027
797 if (*s == '_') 1028 if (*s == '_')
… …
811 } 1042 }
812 1043
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814} 1045}
815 1046
816static int 1047static int ecb_cold
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1048coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{ 1049{
819 const char *s = MgPV_nolen_const (mg); 1050 const char *s = MgPV_nolen_const (mg);
820 1051
821 if (*s == '_') 1052 if (*s == '_')
… …
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1057 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827 1058
828 if (svp) 1059 if (svp)
829 { 1060 {
830 SV *old = *svp; 1061 SV *old = *svp;
831 *svp = newSVsv (sv); 1062 *svp = SvOK (sv) ? newSVsv (sv) : 0;
832 SvREFCNT_dec (old); 1063 SvREFCNT_dec (old);
833 return 0; 1064 return 0;
834 } 1065 }
835 } 1066 }
836 1067
… …
854slf_check_repeat (pTHX_ struct CoroSLF *frame) 1085slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{ 1086{
856 return 1; 1087 return 1;
857} 1088}
858 1089
859static UNOP coro_setup_op; 1090static UNOP init_perl_op;
860 1091
861static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1092ecb_noinline static void /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro) 1093init_perl (pTHX_ struct coro *coro)
863{ 1094{
864 /* 1095 /*
865 * emulate part of the perl startup here. 1096 * emulate part of the perl startup here.
866 */ 1097 */
867 coro_init_stacks (aTHX); 1098 coro_init_stacks (aTHX);
… …
874 PL_comppad_name_fill = 0; 1105 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0; 1106 PL_comppad_name_floor = 0;
876 PL_curpm = 0; 1107 PL_curpm = 0;
877 PL_curpad = 0; 1108 PL_curpad = 0;
878 PL_localizing = 0; 1109 PL_localizing = 0;
879 PL_dirty = 0;
880 PL_restartop = 0; 1110 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0) 1111#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0; 1112 PL_parser = 0;
883#endif 1113#endif
884 PL_hints = 0; 1114 PL_hints = 0;
885 1115
886 /* recreate the die/warn hooks */ 1116 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1117 PL_diehook = SvREFCNT_inc (rv_diehook);
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1118 PL_warnhook = SvREFCNT_inc (rv_warnhook);
889 1119
890 GvSV (PL_defgv) = newSV (0); 1120 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0; 1121 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0); 1122 GvSV (PL_errgv) = newSV (0);
893 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);
… …
914 /* 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
915 * 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.
916 */ 1146 */
917 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 */
918 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 */
1149 slf_frame.destroy = 0;
919 1150
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1151 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op; 1152 init_perl_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB; 1153 init_perl_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf; 1154 init_perl_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */ 1155 /* no flags etc. required, as an init function won't be called */
925 1156
926 PL_op = (OP *)&coro_setup_op; 1157 PL_op = (OP *)&init_perl_op;
927 1158
928 /* copy throw, in case it was set before coro_setup */ 1159 /* copy throw, in case it was set before init_perl */
929 CORO_THROW = coro->except; 1160 CORO_THROW = coro->except;
930}
931 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
932static void 1171static void
933coro_destruct (pTHX_ struct coro *coro) 1172coro_unwind_stacks (pTHX)
934{ 1173{
935 if (!IN_DESTRUCT) 1174 if (!IN_DESTRUCT)
936 { 1175 {
937 /* restore all saved variables and stuff */ 1176 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0); 1177 LEAVE_SCOPE (0);
… …
946 POPSTACK_TO (PL_mainstack); 1185 POPSTACK_TO (PL_mainstack);
947 1186
948 /* unwind main stack */ 1187 /* unwind main stack */
949 dounwind (-1); 1188 dounwind (-1);
950 } 1189 }
1190}
951 1191
952 SvREFCNT_dec (GvSV (PL_defgv)); 1192static void
953 SvREFCNT_dec (GvAV (PL_defgv)); 1193destroy_perl (pTHX_ struct coro *coro)
954 SvREFCNT_dec (GvSV (PL_errgv)); 1194{
955 SvREFCNT_dec (PL_defoutgv); 1195 SV *svf [9];
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959 1196
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962 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
963 SvREFCNT_dec (coro->saved_deffh); 1240 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb); 1241 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb); 1242 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av); 1243 SvREFCNT_dec (coro->invoke_av);
967 1244 }
968 coro_destruct_stacks (aTHX);
969} 1245}
970 1246
971INLINE void 1247ecb_inline void
972free_coro_mortal (pTHX) 1248free_coro_mortal (pTHX)
973{ 1249{
974 if (expect_true (coro_mortal)) 1250 if (ecb_expect_true (coro_mortal))
975 { 1251 {
976 SvREFCNT_dec (coro_mortal); 1252 SvREFCNT_dec ((SV *)coro_mortal);
977 coro_mortal = 0; 1253 coro_mortal = 0;
978 } 1254 }
979} 1255}
980 1256
981static int 1257static int
… …
1114 1390
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1391 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116} 1392}
1117 1393
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1394/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1119static void NOINLINE 1395static void ecb_noinline
1120cctx_prepare (pTHX) 1396cctx_prepare (pTHX)
1121{ 1397{
1122 PL_top_env = &PL_start_env; 1398 PL_top_env = &PL_start_env;
1123 1399
1124 if (cctx_current->flags & CC_TRACE) 1400 if (cctx_current->flags & CC_TRACE)
… …
1135 slf_frame.prepare = slf_prepare_set_stacklevel; 1411 slf_frame.prepare = slf_prepare_set_stacklevel;
1136 slf_frame.check = slf_check_set_stacklevel; 1412 slf_frame.check = slf_check_set_stacklevel;
1137} 1413}
1138 1414
1139/* 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 */
1140INLINE void 1416ecb_inline void
1141transfer_tail (pTHX) 1417transfer_tail (pTHX)
1142{ 1418{
1143 free_coro_mortal (aTHX); 1419 free_coro_mortal (aTHX);
1420}
1421
1422/* try to exit the same way perl's main function would do */
1423/* we do not bother resetting the environment or other things *7
1424/* that are not, uhm, essential */
1425/* this obviously also doesn't work when perl is embedded */
1426static void ecb_noinline ecb_cold
1427perlish_exit (void)
1428{
1429 int exitstatus = perl_destruct (PL_curinterp);
1430 perl_free (PL_curinterp);
1431 exit (exitstatus);
1144} 1432}
1145 1433
1146/* 1434/*
1147 * this is a _very_ stripped down perl interpreter ;) 1435 * this is a _very_ stripped down perl interpreter ;)
1148 */ 1436 */
… …
1170 /* somebody or something will hit me for both perl_run and PL_restartop */ 1458 /* somebody or something will hit me for both perl_run and PL_restartop */
1171 PL_restartop = PL_op; 1459 PL_restartop = PL_op;
1172 perl_run (PL_curinterp); 1460 perl_run (PL_curinterp);
1173 /* 1461 /*
1174 * Unfortunately, there is no way to get at the return values of the 1462 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these 1463 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1464 * runtime errors here, as this is just a random interpreter, not a thread.
1176 */ 1465 */
1177 1466
1178 /* 1467 /*
1179 * If perl-run returns we assume exit() was being called or the coro 1468 * If perl-run returns we assume exit() was being called or the coro
1180 * fell off the end, which seems to be the only valid (non-bug) 1469 * fell off the end, which seems to be the only valid (non-bug)
1181 * reason for perl_run to return. We try to exit by jumping to the 1470 * reason for perl_run to return. We try to mimic whatever perl is normally
1182 * bootstrap-time "top" top_env, as we cannot restore the "main" 1471 * doing in that case. YMMV.
1183 * coroutine as Coro has no such concept.
1184 * This actually isn't valid with the pthread backend, but OSes requiring
1185 * that backend are too broken to do it in a standards-compliant way.
1186 */ 1472 */
1187 PL_top_env = main_top_env; 1473 perlish_exit ();
1188 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1189 } 1474 }
1190} 1475}
1191 1476
1192static coro_cctx * 1477static coro_cctx *
1193cctx_new () 1478cctx_new (void)
1194{ 1479{
1195 coro_cctx *cctx; 1480 coro_cctx *cctx;
1196 1481
1197 ++cctx_count; 1482 ++cctx_count;
1198 New (0, cctx, 1, coro_cctx); 1483 New (0, cctx, 1, coro_cctx);
… …
1204 return cctx; 1489 return cctx;
1205} 1490}
1206 1491
1207/* create a new cctx only suitable as source */ 1492/* create a new cctx only suitable as source */
1208static coro_cctx * 1493static coro_cctx *
1209cctx_new_empty () 1494cctx_new_empty (void)
1210{ 1495{
1211 coro_cctx *cctx = cctx_new (); 1496 coro_cctx *cctx = cctx_new ();
1212 1497
1213 cctx->sptr = 0; 1498 cctx->sptr = 0;
1214 coro_create (&cctx->cctx, 0, 0, 0, 0); 1499 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1216 return cctx; 1501 return cctx;
1217} 1502}
1218 1503
1219/* create a new cctx suitable as destination/running a perl interpreter */ 1504/* create a new cctx suitable as destination/running a perl interpreter */
1220static coro_cctx * 1505static coro_cctx *
1221cctx_new_run () 1506cctx_new_run (void)
1222{ 1507{
1223 coro_cctx *cctx = cctx_new (); 1508 coro_cctx *cctx = cctx_new ();
1224 void *stack_start; 1509 void *stack_start;
1225 size_t stack_size; 1510 size_t stack_size;
1226 1511
1227#if HAVE_MMAP 1512#if HAVE_MMAP
1228 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1513 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1229 /* mmap supposedly does allocate-on-write for us */ 1514 /* mmap supposedly does allocate-on-write for us */
1230 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1515 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1231 1516
1232 if (cctx->sptr != (void *)-1) 1517 if (cctx->sptr != (void *)-1)
1233 { 1518 {
1234 #if CORO_STACKGUARD 1519 #if CORO_STACKGUARD
1235 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1520 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1267cctx_destroy (coro_cctx *cctx) 1552cctx_destroy (coro_cctx *cctx)
1268{ 1553{
1269 if (!cctx) 1554 if (!cctx)
1270 return; 1555 return;
1271 1556
1272 assert (cctx != cctx_current);//D temporary 1557 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1273 1558
1274 --cctx_count; 1559 --cctx_count;
1275 coro_destroy (&cctx->cctx); 1560 coro_destroy (&cctx->cctx);
1276 1561
1277 /* coro_transfer creates new, empty cctx's */ 1562 /* coro_transfer creates new, empty cctx's */
… …
1296#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1581#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1297 1582
1298static coro_cctx * 1583static coro_cctx *
1299cctx_get (pTHX) 1584cctx_get (pTHX)
1300{ 1585{
1301 while (expect_true (cctx_first)) 1586 while (ecb_expect_true (cctx_first))
1302 { 1587 {
1303 coro_cctx *cctx = cctx_first; 1588 coro_cctx *cctx = cctx_first;
1304 cctx_first = cctx->next; 1589 cctx_first = cctx->next;
1305 --cctx_idle; 1590 --cctx_idle;
1306 1591
1307 if (expect_true (!CCTX_EXPIRED (cctx))) 1592 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1308 return cctx; 1593 return cctx;
1309 1594
1310 cctx_destroy (cctx); 1595 cctx_destroy (cctx);
1311 } 1596 }
1312 1597
… …
1317cctx_put (coro_cctx *cctx) 1602cctx_put (coro_cctx *cctx)
1318{ 1603{
1319 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1604 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1320 1605
1321 /* free another cctx if overlimit */ 1606 /* free another cctx if overlimit */
1322 if (expect_false (cctx_idle >= cctx_max_idle)) 1607 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1323 { 1608 {
1324 coro_cctx *first = cctx_first; 1609 coro_cctx *first = cctx_first;
1325 cctx_first = first->next; 1610 cctx_first = first->next;
1326 --cctx_idle; 1611 --cctx_idle;
1327 1612
… …
1338static void 1623static void
1339transfer_check (pTHX_ struct coro *prev, struct coro *next) 1624transfer_check (pTHX_ struct coro *prev, struct coro *next)
1340{ 1625{
1341 /* TODO: throwing up here is considered harmful */ 1626 /* TODO: throwing up here is considered harmful */
1342 1627
1343 if (expect_true (prev != next)) 1628 if (ecb_expect_true (prev != next))
1344 { 1629 {
1345 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1630 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1346 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,"); 1631 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1347 1632
1348 if (expect_false (next->flags & CF_RUNNING)) 1633 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1349 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1350
1351 if (expect_false (next->flags & CF_DESTROYED))
1352 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1634 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1353 1635
1354#if !PERL_VERSION_ATLEAST (5,10,0) 1636#if !PERL_VERSION_ATLEAST (5,10,0)
1355 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1637 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1356 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1638 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1357#endif 1639#endif
1358 } 1640 }
1359} 1641}
1360 1642
1361/* always use the TRANSFER macro */ 1643/* always use the TRANSFER macro */
1362static void NOINLINE /* noinline so we have a fixed stackframe */ 1644static void ecb_noinline /* noinline so we have a fixed stackframe */
1363transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1645transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1364{ 1646{
1365 dSTACKLEVEL; 1647 dSTACKLEVEL;
1366 1648
1367 /* sometimes transfer is only called to set idle_sp */ 1649 /* sometimes transfer is only called to set idle_sp */
1368 if (expect_false (!prev)) 1650 if (ecb_expect_false (!prev))
1369 { 1651 {
1370 cctx_current->idle_sp = STACKLEVEL; 1652 cctx_current->idle_sp = STACKLEVEL;
1371 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1653 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1372 } 1654 }
1373 else if (expect_true (prev != next)) 1655 else if (ecb_expect_true (prev != next))
1374 { 1656 {
1375 coro_cctx *cctx_prev; 1657 coro_cctx *cctx_prev;
1376 1658
1377 if (expect_false (prev->flags & CF_NEW)) 1659 if (ecb_expect_false (prev->flags & CF_NEW))
1378 { 1660 {
1379 /* create a new empty/source context */ 1661 /* create a new empty/source context */
1380 prev->flags &= ~CF_NEW; 1662 prev->flags &= ~CF_NEW;
1381 prev->flags |= CF_RUNNING; 1663 prev->flags |= CF_RUNNING;
1382 } 1664 }
… …
1385 next->flags |= CF_RUNNING; 1667 next->flags |= CF_RUNNING;
1386 1668
1387 /* first get rid of the old state */ 1669 /* first get rid of the old state */
1388 save_perl (aTHX_ prev); 1670 save_perl (aTHX_ prev);
1389 1671
1390 if (expect_false (next->flags & CF_NEW)) 1672 if (ecb_expect_false (next->flags & CF_NEW))
1391 { 1673 {
1392 /* need to start coroutine */ 1674 /* need to start coroutine */
1393 next->flags &= ~CF_NEW; 1675 next->flags &= ~CF_NEW;
1394 /* setup coroutine call */ 1676 /* setup coroutine call */
1395 coro_setup (aTHX_ next); 1677 init_perl (aTHX_ next);
1396 } 1678 }
1397 else 1679 else
1398 load_perl (aTHX_ next); 1680 load_perl (aTHX_ next);
1399 1681
1400 assert (!prev->cctx);//D temporary
1401
1402 /* possibly untie and reuse the cctx */ 1682 /* possibly untie and reuse the cctx */
1403 if (expect_true ( 1683 if (ecb_expect_true (
1404 cctx_current->idle_sp == STACKLEVEL 1684 cctx_current->idle_sp == STACKLEVEL
1405 && !(cctx_current->flags & CC_TRACE) 1685 && !(cctx_current->flags & CC_TRACE)
1406 && !force_cctx 1686 && !force_cctx
1407 )) 1687 ))
1408 { 1688 {
1409 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1689 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1410 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1690 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1411 1691
1412 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1692 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1413 /* without this the next cctx_get might destroy the running cctx while still in use */ 1693 /* without this the next cctx_get might destroy the running cctx while still in use */
1414 if (expect_false (CCTX_EXPIRED (cctx_current))) 1694 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1415 if (expect_true (!next->cctx)) 1695 if (ecb_expect_true (!next->cctx))
1416 next->cctx = cctx_get (aTHX); 1696 next->cctx = cctx_get (aTHX);
1417 1697
1418 cctx_put (cctx_current); 1698 cctx_put (cctx_current);
1419 } 1699 }
1420 else 1700 else
1421 prev->cctx = cctx_current; 1701 prev->cctx = cctx_current;
1422 1702
1423 ++next->usecount; 1703 ++next->usecount;
1424 1704
1425 cctx_prev = cctx_current; 1705 cctx_prev = cctx_current;
1426 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1706 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1427 1707
1428 next->cctx = 0; 1708 next->cctx = 0;
1429 1709
1430 if (expect_false (cctx_prev != cctx_current)) 1710 if (ecb_expect_false (cctx_prev != cctx_current))
1431 { 1711 {
1432 cctx_prev->top_env = PL_top_env; 1712 cctx_prev->top_env = PL_top_env;
1433 PL_top_env = cctx_current->top_env; 1713 PL_top_env = cctx_current->top_env;
1434 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1714 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1435 } 1715 }
… …
1441#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1721#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1442#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1722#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1443 1723
1444/** high level stuff ********************************************************/ 1724/** high level stuff ********************************************************/
1445 1725
1726/* this function is actually Coro, not Coro::State, but we call it from here */
1727/* because it is convenient - but it hasn't been declared yet for that reason */
1446static int 1728static void
1729coro_call_on_destroy (pTHX_ struct coro *coro);
1730
1731static void
1447coro_state_destroy (pTHX_ struct coro *coro) 1732coro_state_destroy (pTHX_ struct coro *coro)
1448{ 1733{
1449 if (coro->flags & CF_DESTROYED) 1734 if (coro->flags & CF_ZOMBIE)
1450 return 0; 1735 return;
1451 1736
1452 if (coro->on_destroy)
1453 coro->on_destroy (aTHX_ coro); 1737 slf_destroy (aTHX_ coro);
1454 1738
1455 coro->flags |= CF_DESTROYED; 1739 coro->flags |= CF_ZOMBIE;
1456 1740
1457 if (coro->flags & CF_READY) 1741 if (coro->flags & CF_READY)
1458 { 1742 {
1459 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1743 /* reduce nready, as destroying a ready coro effectively unreadies it */
1460 /* alternative: look through all ready queues and remove the coro */ 1744 /* alternative: look through all ready queues and remove the coro */
1461 --coro_nready; 1745 --coro_nready;
1462 } 1746 }
1463 else 1747 else
1464 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1748 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1465 1749
1466 if (coro->mainstack && coro->mainstack != main_mainstack) 1750 if (coro->next) coro->next->prev = coro->prev;
1467 { 1751 if (coro->prev) coro->prev->next = coro->next;
1468 struct coro temp; 1752 if (coro == coro_first) coro_first = coro->next;
1469 1753
1470 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1754 if (coro->mainstack
1471 1755 && coro->mainstack != main_mainstack
1472 save_perl (aTHX_ &temp); 1756 && coro->slot
1757 && !PL_dirty)
1473 load_perl (aTHX_ coro); 1758 destroy_perl (aTHX_ coro);
1474
1475 coro_destruct (aTHX_ coro);
1476
1477 load_perl (aTHX_ &temp);
1478
1479 coro->slot = 0;
1480 }
1481 1759
1482 cctx_destroy (coro->cctx); 1760 cctx_destroy (coro->cctx);
1483 SvREFCNT_dec (coro->startcv); 1761 SvREFCNT_dec (coro->startcv);
1484 SvREFCNT_dec (coro->args); 1762 SvREFCNT_dec (coro->args);
1763 SvREFCNT_dec (coro->swap_sv);
1485 SvREFCNT_dec (CORO_THROW); 1764 SvREFCNT_dec (CORO_THROW);
1486 1765
1487 if (coro->next) coro->next->prev = coro->prev; 1766 coro_call_on_destroy (aTHX_ coro);
1488 if (coro->prev) coro->prev->next = coro->next;
1489 if (coro == coro_first) coro_first = coro->next;
1490 1767
1491 return 1; 1768 /* more destruction mayhem in coro_state_free */
1492} 1769}
1493 1770
1494static int 1771static int
1495coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1772coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1496{ 1773{
1497 struct coro *coro = (struct coro *)mg->mg_ptr; 1774 struct coro *coro = (struct coro *)mg->mg_ptr;
1498 mg->mg_ptr = 0; 1775 mg->mg_ptr = 0;
1499 1776
1500 coro->hv = 0;
1501
1502 if (--coro->refcnt < 0)
1503 {
1504 coro_state_destroy (aTHX_ coro); 1777 coro_state_destroy (aTHX_ coro);
1778 SvREFCNT_dec (coro->on_destroy);
1779 SvREFCNT_dec (coro->status);
1780
1505 Safefree (coro); 1781 Safefree (coro);
1506 }
1507 1782
1508 return 0; 1783 return 0;
1509} 1784}
1510 1785
1511static int 1786static int ecb_cold
1512coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1787coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1513{ 1788{
1514 struct coro *coro = (struct coro *)mg->mg_ptr; 1789 /* called when perl clones the current process the slow way (windows process emulation) */
1515 1790 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1516 ++coro->refcnt; 1791 mg->mg_ptr = 0;
1792 mg->mg_virtual = 0;
1517 1793
1518 return 0; 1794 return 0;
1519} 1795}
1520 1796
1521static MGVTBL coro_state_vtbl = { 1797static MGVTBL coro_state_vtbl = {
… …
1544 1820
1545 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1821 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1546 TRANSFER (ta, 1); 1822 TRANSFER (ta, 1);
1547} 1823}
1548 1824
1549/*****************************************************************************/
1550/* gensub: simple closure generation utility */
1551
1552#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1553
1554/* create a closure from XS, returns a code reference */
1555/* the arg can be accessed via GENSUB_ARG from the callback */
1556/* the callback must use dXSARGS/XSRETURN */
1557static SV *
1558gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1559{
1560 CV *cv = (CV *)newSV (0);
1561
1562 sv_upgrade ((SV *)cv, SVt_PVCV);
1563
1564 CvANON_on (cv);
1565 CvISXSUB_on (cv);
1566 CvXSUB (cv) = xsub;
1567 GENSUB_ARG = arg;
1568
1569 return newRV_noinc ((SV *)cv);
1570}
1571
1572/** Coro ********************************************************************/ 1825/** Coro ********************************************************************/
1573 1826
1574INLINE void 1827ecb_inline void
1575coro_enq (pTHX_ struct coro *coro) 1828coro_enq (pTHX_ struct coro *coro)
1576{ 1829{
1577 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1830 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1578}
1579 1831
1580INLINE SV * 1832 SvREFCNT_inc_NN (coro->hv);
1833
1834 coro->next_ready = 0;
1835 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1836 ready [1] = coro;
1837}
1838
1839ecb_inline struct coro *
1581coro_deq (pTHX) 1840coro_deq (pTHX)
1582{ 1841{
1583 int prio; 1842 int prio;
1584 1843
1585 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1844 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1586 if (AvFILLp (coro_ready [prio]) >= 0) 1845 {
1587 return av_shift (coro_ready [prio]); 1846 struct coro **ready = coro_ready [prio];
1847
1848 if (ready [0])
1849 {
1850 struct coro *coro = ready [0];
1851 ready [0] = coro->next_ready;
1852 return coro;
1853 }
1854 }
1588 1855
1589 return 0; 1856 return 0;
1857}
1858
1859static void
1860invoke_sv_ready_hook_helper (void)
1861{
1862 dTHX;
1863 dSP;
1864
1865 ENTER;
1866 SAVETMPS;
1867
1868 PUSHMARK (SP);
1869 PUTBACK;
1870 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1871
1872 FREETMPS;
1873 LEAVE;
1590} 1874}
1591 1875
1592static int 1876static int
1593api_ready (pTHX_ SV *coro_sv) 1877api_ready (pTHX_ SV *coro_sv)
1594{ 1878{
1595 struct coro *coro;
1596 SV *sv_hook;
1597 void (*xs_hook)(void);
1598
1599 coro = SvSTATE (coro_sv); 1879 struct coro *coro = SvSTATE (coro_sv);
1600 1880
1601 if (coro->flags & CF_READY) 1881 if (coro->flags & CF_READY)
1602 return 0; 1882 return 0;
1603 1883
1604 coro->flags |= CF_READY; 1884 coro->flags |= CF_READY;
1605 1885
1606 sv_hook = coro_nready ? 0 : coro_readyhook;
1607 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1608
1609 coro_enq (aTHX_ coro); 1886 coro_enq (aTHX_ coro);
1610 ++coro_nready;
1611 1887
1612 if (sv_hook) 1888 if (!coro_nready++)
1613 { 1889 if (coroapi.readyhook)
1614 dSP; 1890 coroapi.readyhook ();
1615
1616 ENTER;
1617 SAVETMPS;
1618
1619 PUSHMARK (SP);
1620 PUTBACK;
1621 call_sv (sv_hook, G_VOID | G_DISCARD);
1622
1623 FREETMPS;
1624 LEAVE;
1625 }
1626
1627 if (xs_hook)
1628 xs_hook ();
1629 1891
1630 return 1; 1892 return 1;
1631} 1893}
1632 1894
1633static int 1895static int
… …
1635{ 1897{
1636 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1898 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1637} 1899}
1638 1900
1639/* expects to own a reference to next->hv */ 1901/* expects to own a reference to next->hv */
1640INLINE void 1902ecb_inline void
1641prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1903prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1642{ 1904{
1643 SV *prev_sv = SvRV (coro_current); 1905 SV *prev_sv = SvRV (coro_current);
1644 1906
1645 ta->prev = SvSTATE_hv (prev_sv); 1907 ta->prev = SvSTATE_hv (prev_sv);
… …
1656static void 1918static void
1657prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1919prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1658{ 1920{
1659 for (;;) 1921 for (;;)
1660 { 1922 {
1661 SV *next_sv = coro_deq (aTHX); 1923 struct coro *next = coro_deq (aTHX);
1662 1924
1663 if (expect_true (next_sv)) 1925 if (ecb_expect_true (next))
1664 { 1926 {
1665 struct coro *next = SvSTATE_hv (next_sv);
1666
1667 /* cannot transfer to destroyed coros, skip and look for next */ 1927 /* cannot transfer to destroyed coros, skip and look for next */
1668 if (expect_false (next->flags & CF_DESTROYED)) 1928 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1669 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1929 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1670 else 1930 else
1671 { 1931 {
1672 next->flags &= ~CF_READY; 1932 next->flags &= ~CF_READY;
1673 --coro_nready; 1933 --coro_nready;
1674 1934
… …
1680 { 1940 {
1681 /* nothing to schedule: call the idle handler */ 1941 /* nothing to schedule: call the idle handler */
1682 if (SvROK (sv_idle) 1942 if (SvROK (sv_idle)
1683 && SvOBJECT (SvRV (sv_idle))) 1943 && SvOBJECT (SvRV (sv_idle)))
1684 { 1944 {
1945 if (SvRV (sv_idle) == SvRV (coro_current))
1946 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1947
1685 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 1948 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1686 api_ready (aTHX_ SvRV (sv_idle)); 1949 api_ready (aTHX_ SvRV (sv_idle));
1687 --coro_nready; 1950 --coro_nready;
1688 } 1951 }
1689 else 1952 else
1690 { 1953 {
1954 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1691 dSP; 1955 dSP;
1692 1956
1693 ENTER; 1957 ENTER;
1694 SAVETMPS; 1958 SAVETMPS;
1695 1959
… …
1702 } 1966 }
1703 } 1967 }
1704 } 1968 }
1705} 1969}
1706 1970
1707INLINE void 1971ecb_inline void
1708prepare_cede (pTHX_ struct coro_transfer_args *ta) 1972prepare_cede (pTHX_ struct coro_transfer_args *ta)
1709{ 1973{
1710 api_ready (aTHX_ coro_current); 1974 api_ready (aTHX_ coro_current);
1711 prepare_schedule (aTHX_ ta); 1975 prepare_schedule (aTHX_ ta);
1712} 1976}
1713 1977
1714INLINE void 1978ecb_inline void
1715prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1979prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1716{ 1980{
1717 SV *prev = SvRV (coro_current); 1981 SV *prev = SvRV (coro_current);
1718 1982
1719 if (coro_nready) 1983 if (coro_nready)
… …
1749{ 2013{
1750 struct coro_transfer_args ta; 2014 struct coro_transfer_args ta;
1751 2015
1752 prepare_cede (aTHX_ &ta); 2016 prepare_cede (aTHX_ &ta);
1753 2017
1754 if (expect_true (ta.prev != ta.next)) 2018 if (ecb_expect_true (ta.prev != ta.next))
1755 { 2019 {
1756 TRANSFER (ta, 1); 2020 TRANSFER (ta, 1);
1757 return 1; 2021 return 1;
1758 } 2022 }
1759 else 2023 else
… …
1802 coro->slot->runops = RUNOPS_DEFAULT; 2066 coro->slot->runops = RUNOPS_DEFAULT;
1803 } 2067 }
1804} 2068}
1805 2069
1806static void 2070static void
2071coro_push_av (pTHX_ AV *av, I32 gimme_v)
2072{
2073 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2074 {
2075 dSP;
2076
2077 if (gimme_v == G_SCALAR)
2078 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2079 else
2080 {
2081 int i;
2082 EXTEND (SP, AvFILLp (av) + 1);
2083
2084 for (i = 0; i <= AvFILLp (av); ++i)
2085 PUSHs (AvARRAY (av)[i]);
2086 }
2087
2088 PUTBACK;
2089 }
2090}
2091
2092static void
2093coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2094{
2095 if (!coro->on_destroy)
2096 coro->on_destroy = newAV ();
2097
2098 av_push (coro->on_destroy, cb);
2099}
2100
2101static void
2102slf_destroy_join (pTHX_ struct CoroSLF *frame)
2103{
2104 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2105}
2106
2107static int
2108slf_check_join (pTHX_ struct CoroSLF *frame)
2109{
2110 struct coro *coro = (struct coro *)frame->data;
2111
2112 if (!coro->status)
2113 return 1;
2114
2115 frame->destroy = 0;
2116
2117 coro_push_av (aTHX_ coro->status, GIMME_V);
2118
2119 SvREFCNT_dec ((SV *)coro->hv);
2120
2121 return 0;
2122}
2123
2124static void
2125slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2128
2129 if (items > 1)
2130 croak ("join called with too many arguments");
2131
2132 if (coro->status)
2133 frame->prepare = prepare_nop;
2134 else
2135 {
2136 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2137 frame->prepare = prepare_schedule;
2138 }
2139
2140 frame->check = slf_check_join;
2141 frame->destroy = slf_destroy_join;
2142 frame->data = (void *)coro;
2143 SvREFCNT_inc (coro->hv);
2144}
2145
2146static void
1807coro_call_on_destroy (pTHX_ struct coro *coro) 2147coro_call_on_destroy (pTHX_ struct coro *coro)
1808{ 2148{
1809 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2149 AV *od = coro->on_destroy;
1810 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1811 2150
1812 if (on_destroyp) 2151 if (!od)
1813 { 2152 return;
1814 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1815 2153
1816 while (AvFILLp (on_destroy) >= 0) 2154 while (AvFILLp (od) >= 0)
2155 {
2156 SV *cb = sv_2mortal (av_pop (od));
2157
2158 /* coro hv's (and only hv's at the moment) are supported as well */
2159 if (SvSTATEhv_p (aTHX_ cb))
2160 api_ready (aTHX_ cb);
2161 else
1817 { 2162 {
1818 dSP; /* don't disturb outer sp */ 2163 dSP; /* don't disturb outer sp */
1819 SV *cb = av_pop (on_destroy);
1820
1821 PUSHMARK (SP); 2164 PUSHMARK (SP);
1822 2165
1823 if (statusp) 2166 if (coro->status)
1824 { 2167 {
1825 int i; 2168 PUTBACK;
1826 AV *status = (AV *)SvRV (*statusp); 2169 coro_push_av (aTHX_ coro->status, G_ARRAY);
1827 EXTEND (SP, AvFILLp (status) + 1); 2170 SPAGAIN;
1828
1829 for (i = 0; i <= AvFILLp (status); ++i)
1830 PUSHs (AvARRAY (status)[i]);
1831 } 2171 }
1832 2172
1833 PUTBACK; 2173 PUTBACK;
1834 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2174 call_sv (cb, G_VOID | G_DISCARD);
1835 } 2175 }
1836 } 2176 }
1837} 2177}
1838 2178
1839static void 2179static void
1840slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2180coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1841{ 2181{
2182 AV *av;
2183
2184 if (coro->status)
2185 {
2186 av = coro->status;
2187 av_clear (av);
2188 }
2189 else
2190 av = coro->status = newAV ();
2191
2192 /* items are actually not so common, so optimise for this case */
2193 if (items)
2194 {
1842 int i; 2195 int i;
1843 HV *hv = (HV *)SvRV (coro_current);
1844 AV *av = newAV ();
1845 2196
1846 av_extend (av, items - 1); 2197 av_extend (av, items - 1);
2198
1847 for (i = 0; i < items; ++i) 2199 for (i = 0; i < items; ++i)
1848 av_push (av, SvREFCNT_inc_NN (arg [i])); 2200 av_push (av, SvREFCNT_inc_NN (arg [i]));
2201 }
2202}
1849 2203
1850 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2204static void
1851 2205slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2206{
1852 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2207 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1853 api_ready (aTHX_ sv_manager); 2208 api_ready (aTHX_ sv_manager);
1854 2209
1855 frame->prepare = prepare_schedule; 2210 frame->prepare = prepare_schedule;
1856 frame->check = slf_check_repeat; 2211 frame->check = slf_check_repeat;
2212
2213 /* as a minor optimisation, we could unwind all stacks here */
2214 /* but that puts extra pressure on pp_slf, and is not worth much */
2215 /*coro_unwind_stacks (aTHX);*/
2216}
2217
2218static void
2219slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2220{
2221 HV *coro_hv = (HV *)SvRV (coro_current);
2222
2223 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2224 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2225}
2226
2227static void
2228slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2229{
2230 HV *coro_hv;
2231 struct coro *coro;
2232
2233 if (items <= 0)
2234 croak ("Coro::cancel called without coro object,");
2235
2236 coro = SvSTATE (arg [0]);
2237 coro_hv = coro->hv;
2238
2239 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2240
2241 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2242 {
2243 /* coro currently busy cancelling something, so just notify it */
2244 coro->slf_frame.data = (void *)coro;
2245
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 else if (coro_hv == (HV *)SvRV (coro_current))
2250 {
2251 /* cancelling the current coro is allowed, and equals terminate */
2252 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2253 }
2254 else
2255 {
2256 struct coro *self = SvSTATE_current;
2257
2258 /* otherwise we cancel directly, purely for speed reasons
2259 * unfortunately, this requires some magic trickery, as
2260 * somebody else could cancel us, so we have to fight the cancellation.
2261 * this is ugly, and hopefully fully worth the extra speed.
2262 * besides, I can't get the slow-but-safe version working...
2263 */
2264 slf_frame.data = 0;
2265 self->flags |= CF_NOCANCEL;
2266 coro_state_destroy (aTHX_ coro);
2267 self->flags &= ~CF_NOCANCEL;
2268
2269 if (slf_frame.data)
2270 {
2271 /* while we were busy we have been cancelled, so terminate */
2272 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2273 }
2274 else
2275 {
2276 frame->prepare = prepare_nop;
2277 frame->check = slf_check_nop;
2278 }
2279 }
2280}
2281
2282static int
2283slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2284{
2285 frame->prepare = 0;
2286 coro_unwind_stacks (aTHX);
2287
2288 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2289
2290 return 1;
2291}
2292
2293static int
2294safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2295{
2296 if (coro->cctx)
2297 croak ("coro inside C callback, unable to cancel at this time, caught");
2298
2299 if (coro->flags & CF_NEW)
2300 {
2301 coro_set_status (aTHX_ coro, arg, items);
2302 coro_state_destroy (aTHX_ coro);
2303 }
2304 else
2305 {
2306 if (!coro->slf_frame.prepare)
2307 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2308
2309 slf_destroy (aTHX_ coro);
2310
2311 coro_set_status (aTHX_ coro, arg, items);
2312 coro->slf_frame.prepare = prepare_nop;
2313 coro->slf_frame.check = slf_check_safe_cancel;
2314
2315 api_ready (aTHX_ (SV *)coro->hv);
2316 }
2317
2318 return 1;
1857} 2319}
1858 2320
1859/*****************************************************************************/ 2321/*****************************************************************************/
1860/* async pool handler */ 2322/* async pool handler */
1861 2323
… …
1892slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2354slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1893{ 2355{
1894 HV *hv = (HV *)SvRV (coro_current); 2356 HV *hv = (HV *)SvRV (coro_current);
1895 struct coro *coro = SvSTATE_hv ((SV *)hv); 2357 struct coro *coro = SvSTATE_hv ((SV *)hv);
1896 2358
1897 if (expect_true (coro->saved_deffh)) 2359 if (ecb_expect_true (coro->saved_deffh))
1898 { 2360 {
1899 /* subsequent iteration */ 2361 /* subsequent iteration */
1900 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2362 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1901 coro->saved_deffh = 0; 2363 coro->saved_deffh = 0;
1902 2364
1903 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2365 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1904 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2366 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1905 { 2367 {
1906 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2368 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1907 coro->invoke_av = newAV (); 2369 return;
1908
1909 frame->prepare = prepare_nop;
1910 } 2370 }
1911 else 2371 else
1912 { 2372 {
1913 av_clear (GvAV (PL_defgv)); 2373 av_clear (GvAV (PL_defgv));
1914 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2374 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
… …
1939 2399
1940static void 2400static void
1941coro_rouse_callback (pTHX_ CV *cv) 2401coro_rouse_callback (pTHX_ CV *cv)
1942{ 2402{
1943 dXSARGS; 2403 dXSARGS;
1944 SV *data = (SV *)GENSUB_ARG; 2404 SV *data = (SV *)S_GENSUB_ARG;
1945 2405
1946 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2406 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1947 { 2407 {
1948 /* first call, set args */ 2408 /* first call, set args */
2409 SV *coro = SvRV (data);
1949 AV *av = newAV (); 2410 AV *av = newAV ();
1950 SV *coro = SvRV (data);
1951 2411
1952 SvRV_set (data, (SV *)av); 2412 SvRV_set (data, (SV *)av);
1953 api_ready (aTHX_ coro);
1954 SvREFCNT_dec (coro);
1955 2413
1956 /* better take a full copy of the arguments */ 2414 /* better take a full copy of the arguments */
1957 while (items--) 2415 while (items--)
1958 av_store (av, items, newSVsv (ST (items))); 2416 av_store (av, items, newSVsv (ST (items)));
2417
2418 api_ready (aTHX_ coro);
2419 SvREFCNT_dec (coro);
1959 } 2420 }
1960 2421
1961 XSRETURN_EMPTY; 2422 XSRETURN_EMPTY;
1962} 2423}
1963 2424
… …
1980 2441
1981 EXTEND (SP, AvFILLp (av) + 1); 2442 EXTEND (SP, AvFILLp (av) + 1);
1982 for (i = 0; i <= AvFILLp (av); ++i) 2443 for (i = 0; i <= AvFILLp (av); ++i)
1983 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2444 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1984 2445
1985 /* we have stolen the elements, so ste length to zero and free */ 2446 /* we have stolen the elements, so set length to zero and free */
1986 AvFILLp (av) = -1; 2447 AvFILLp (av) = -1;
1987 av_undef (av); 2448 av_undef (av);
1988 2449
1989 PUTBACK; 2450 PUTBACK;
1990 } 2451 }
… …
2014 || SvTYPE (SvRV (cb)) != SVt_PVCV 2475 || SvTYPE (SvRV (cb)) != SVt_PVCV
2015 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2476 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2016 croak ("Coro::rouse_wait called with illegal callback argument,"); 2477 croak ("Coro::rouse_wait called with illegal callback argument,");
2017 2478
2018 { 2479 {
2019 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2480 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2020 SV *data = (SV *)GENSUB_ARG; 2481 SV *data = (SV *)S_GENSUB_ARG;
2021 2482
2022 frame->data = (void *)data; 2483 frame->data = (void *)data;
2023 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2484 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2024 frame->check = slf_check_rouse_wait; 2485 frame->check = slf_check_rouse_wait;
2025 } 2486 }
… …
2029coro_new_rouse_cb (pTHX) 2490coro_new_rouse_cb (pTHX)
2030{ 2491{
2031 HV *hv = (HV *)SvRV (coro_current); 2492 HV *hv = (HV *)SvRV (coro_current);
2032 struct coro *coro = SvSTATE_hv (hv); 2493 struct coro *coro = SvSTATE_hv (hv);
2033 SV *data = newRV_inc ((SV *)hv); 2494 SV *data = newRV_inc ((SV *)hv);
2034 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2495 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2035 2496
2036 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2497 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2037 SvREFCNT_dec (data); /* magicext increases the refcount */ 2498 SvREFCNT_dec (data); /* magicext increases the refcount */
2038 2499
2039 SvREFCNT_dec (coro->rouse_cb); 2500 SvREFCNT_dec (coro->rouse_cb);
… …
2136static void 2597static void
2137slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2598slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2138{ 2599{
2139 frame->prepare = prepare_cede_notself; 2600 frame->prepare = prepare_cede_notself;
2140 frame->check = slf_check_nop; 2601 frame->check = slf_check_nop;
2602}
2603
2604/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2605static void
2606slf_destroy (pTHX_ struct coro *coro)
2607{
2608 /* this callback is reserved for slf functions needing to do cleanup */
2609 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2610 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2611
2612 /*
2613 * The on_destroy above most likely is from an SLF call.
2614 * Since by definition the SLF call will not finish when we destroy
2615 * the coro, we will have to force-finish it here, otherwise
2616 * cleanup functions cannot call SLF functions.
2617 */
2618 coro->slf_frame.prepare = 0;
2141} 2619}
2142 2620
2143/* 2621/*
2144 * these not obviously related functions are all rolled into one 2622 * these not obviously related functions are all rolled into one
2145 * function to increase chances that they all will call transfer with the same 2623 * function to increase chances that they all will call transfer with the same
… …
2152 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2630 I32 checkmark; /* mark SP to see how many elements check has pushed */
2153 2631
2154 /* set up the slf frame, unless it has already been set-up */ 2632 /* set up the slf frame, unless it has already been set-up */
2155 /* the latter happens when a new coro has been started */ 2633 /* the latter happens when a new coro has been started */
2156 /* or when a new cctx was attached to an existing coroutine */ 2634 /* or when a new cctx was attached to an existing coroutine */
2157 if (expect_true (!slf_frame.prepare)) 2635 if (ecb_expect_true (!slf_frame.prepare))
2158 { 2636 {
2159 /* first iteration */ 2637 /* first iteration */
2160 dSP; 2638 dSP;
2161 SV **arg = PL_stack_base + TOPMARK + 1; 2639 SV **arg = PL_stack_base + TOPMARK + 1;
2162 int items = SP - arg; /* args without function object */ 2640 int items = SP - arg; /* args without function object */
… …
2203 while (slf_frame.check (aTHX_ &slf_frame)); 2681 while (slf_frame.check (aTHX_ &slf_frame));
2204 2682
2205 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2683 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2206 2684
2207 /* exception handling */ 2685 /* exception handling */
2208 if (expect_false (CORO_THROW)) 2686 if (ecb_expect_false (CORO_THROW))
2209 { 2687 {
2210 SV *exception = sv_2mortal (CORO_THROW); 2688 SV *exception = sv_2mortal (CORO_THROW);
2211 2689
2212 CORO_THROW = 0; 2690 CORO_THROW = 0;
2213 sv_setsv (ERRSV, exception); 2691 sv_setsv (ERRSV, exception);
2214 croak (0); 2692 croak (0);
2215 } 2693 }
2216 2694
2217 /* return value handling - mostly like entersub */ 2695 /* return value handling - mostly like entersub */
2218 /* make sure we put something on the stack in scalar context */ 2696 /* make sure we put something on the stack in scalar context */
2219 if (GIMME_V == G_SCALAR) 2697 if (GIMME_V == G_SCALAR
2698 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2220 { 2699 {
2221 dSP; 2700 dSP;
2222 SV **bot = PL_stack_base + checkmark; 2701 SV **bot = PL_stack_base + checkmark;
2223 2702
2224 if (sp == bot) /* too few, push undef */ 2703 if (sp == bot) /* too few, push undef */
2225 bot [1] = &PL_sv_undef; 2704 bot [1] = &PL_sv_undef;
2226 else if (sp != bot + 1) /* too many, take last one */ 2705 else /* too many, take last one */
2227 bot [1] = *sp; 2706 bot [1] = *sp;
2228 2707
2229 SP = bot + 1; 2708 SP = bot + 1;
2230 2709
2231 PUTBACK; 2710 PUTBACK;
… …
2264 if (PL_op->op_flags & OPf_STACKED) 2743 if (PL_op->op_flags & OPf_STACKED)
2265 { 2744 {
2266 if (items > slf_arga) 2745 if (items > slf_arga)
2267 { 2746 {
2268 slf_arga = items; 2747 slf_arga = items;
2269 free (slf_argv); 2748 Safefree (slf_argv);
2270 slf_argv = malloc (slf_arga * sizeof (SV *)); 2749 New (0, slf_argv, slf_arga, SV *);
2271 } 2750 }
2272 2751
2273 slf_argc = items; 2752 slf_argc = items;
2274 2753
2275 for (i = 0; i < items; ++i) 2754 for (i = 0; i < items; ++i)
… …
2280 2759
2281 PL_op->op_ppaddr = pp_slf; 2760 PL_op->op_ppaddr = pp_slf;
2282 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2761 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2283 2762
2284 PL_op = (OP *)&slf_restore; 2763 PL_op = (OP *)&slf_restore;
2764}
2765
2766/*****************************************************************************/
2767/* dynamic wind */
2768
2769static void
2770on_enterleave_call (pTHX_ SV *cb)
2771{
2772 dSP;
2773
2774 PUSHSTACK;
2775
2776 PUSHMARK (SP);
2777 PUTBACK;
2778 call_sv (cb, G_VOID | G_DISCARD);
2779 SPAGAIN;
2780
2781 POPSTACK;
2782}
2783
2784static SV *
2785coro_avp_pop_and_free (pTHX_ AV **avp)
2786{
2787 AV *av = *avp;
2788 SV *res = av_pop (av);
2789
2790 if (AvFILLp (av) < 0)
2791 {
2792 *avp = 0;
2793 SvREFCNT_dec (av);
2794 }
2795
2796 return res;
2797}
2798
2799static void
2800coro_pop_on_enter (pTHX_ void *coro)
2801{
2802 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2803 SvREFCNT_dec (cb);
2804}
2805
2806static void
2807coro_pop_on_leave (pTHX_ void *coro)
2808{
2809 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2810 on_enterleave_call (aTHX_ sv_2mortal (cb));
2285} 2811}
2286 2812
2287/*****************************************************************************/ 2813/*****************************************************************************/
2288/* PerlIO::cede */ 2814/* PerlIO::cede */
2289 2815
… …
2291{ 2817{
2292 PerlIOBuf base; 2818 PerlIOBuf base;
2293 NV next, every; 2819 NV next, every;
2294} PerlIOCede; 2820} PerlIOCede;
2295 2821
2296static IV 2822static IV ecb_cold
2297PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2823PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2298{ 2824{
2299 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2825 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2300 2826
2301 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2827 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2302 self->next = nvtime () + self->every; 2828 self->next = nvtime () + self->every;
2303 2829
2304 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2830 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2305} 2831}
2306 2832
2307static SV * 2833static SV * ecb_cold
2308PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2834PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2309{ 2835{
2310 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2836 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2311 2837
2312 return newSVnv (self->every); 2838 return newSVnv (self->every);
… …
2363/* Coro::Semaphore & Coro::Signal */ 2889/* Coro::Semaphore & Coro::Signal */
2364 2890
2365static SV * 2891static SV *
2366coro_waitarray_new (pTHX_ int count) 2892coro_waitarray_new (pTHX_ int count)
2367{ 2893{
2368 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2894 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2369 AV *av = newAV (); 2895 AV *av = newAV ();
2370 SV **ary; 2896 SV **ary;
2371 2897
2372 /* unfortunately, building manually saves memory */ 2898 /* unfortunately, building manually saves memory */
2373 Newx (ary, 2, SV *); 2899 Newx (ary, 2, SV *);
2374 AvALLOC (av) = ary; 2900 AvALLOC (av) = ary;
2901#if PERL_VERSION_ATLEAST (5,10,0)
2375 /*AvARRAY (av) = ary;*/ 2902 AvARRAY (av) = ary;
2903#else
2376 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2904 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2905 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2906 SvPVX ((SV *)av) = (char *)ary;
2907#endif
2377 AvMAX (av) = 1; 2908 AvMAX (av) = 1;
2378 AvFILLp (av) = 0; 2909 AvFILLp (av) = 0;
2379 ary [0] = newSViv (count); 2910 ary [0] = newSViv (count);
2380 2911
2381 return newRV_noinc ((SV *)av); 2912 return newRV_noinc ((SV *)av);
… …
2419 SvREFCNT_dec (cb); 2950 SvREFCNT_dec (cb);
2420 } 2951 }
2421} 2952}
2422 2953
2423static void 2954static void
2424coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2955coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2425{ 2956{
2426 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2957 /* call $sem->adjust (0) to possibly wake up some other waiters */
2427 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2958 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2428} 2959}
2429 2960
2430static int 2961static int
2431slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2962slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2432{ 2963{
2433 AV *av = (AV *)frame->data; 2964 AV *av = (AV *)frame->data;
2434 SV *count_sv = AvARRAY (av)[0]; 2965 SV *count_sv = AvARRAY (av)[0];
2966 SV *coro_hv = SvRV (coro_current);
2435 2967
2436 /* if we are about to throw, don't actually acquire the lock, just throw */ 2968 /* if we are about to throw, don't actually acquire the lock, just throw */
2437 if (CORO_THROW) 2969 if (CORO_THROW)
2438 return 0; 2970 return 0;
2439 else if (SvIVX (count_sv) > 0) 2971 else if (SvIVX (count_sv) > 0)
2440 { 2972 {
2441 SvSTATE_current->on_destroy = 0; 2973 frame->destroy = 0;
2442 2974
2443 if (acquire) 2975 if (acquire)
2444 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2976 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2445 else 2977 else
2446 coro_semaphore_adjust (aTHX_ av, 0); 2978 coro_semaphore_adjust (aTHX_ av, 0);
… …
2451 { 2983 {
2452 int i; 2984 int i;
2453 /* if we were woken up but can't down, we look through the whole */ 2985 /* if we were woken up but can't down, we look through the whole */
2454 /* waiters list and only add us if we aren't in there already */ 2986 /* waiters list and only add us if we aren't in there already */
2455 /* this avoids some degenerate memory usage cases */ 2987 /* this avoids some degenerate memory usage cases */
2456 2988 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2457 for (i = 1; i <= AvFILLp (av); ++i)
2458 if (AvARRAY (av)[i] == SvRV (coro_current)) 2989 if (AvARRAY (av)[i] == coro_hv)
2459 return 1; 2990 return 1;
2460 2991
2461 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2992 av_push (av, SvREFCNT_inc (coro_hv));
2462 return 1; 2993 return 1;
2463 } 2994 }
2464} 2995}
2465 2996
2466static int 2997static int
… …
2489 { 3020 {
2490 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3021 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2491 3022
2492 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3023 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2493 frame->prepare = prepare_schedule; 3024 frame->prepare = prepare_schedule;
2494
2495 /* to avoid race conditions when a woken-up coro gets terminated */ 3025 /* to avoid race conditions when a woken-up coro gets terminated */
2496 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3026 /* we arrange for a temporary on_destroy that calls adjust (0) */
2497 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3027 frame->destroy = coro_semaphore_destroy;
2498 } 3028 }
2499} 3029}
2500 3030
2501static void 3031static void
2502slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3032slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2510{ 3040{
2511 if (items >= 2) 3041 if (items >= 2)
2512 { 3042 {
2513 /* callback form */ 3043 /* callback form */
2514 AV *av = (AV *)SvRV (arg [0]); 3044 AV *av = (AV *)SvRV (arg [0]);
2515 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3045 SV *cb_cv = s_get_cv_croak (arg [1]);
2516 3046
2517 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3047 av_push (av, SvREFCNT_inc_NN (cb_cv));
2518 3048
2519 if (SvIVX (AvARRAY (av)[0]) > 0) 3049 if (SvIVX (AvARRAY (av)[0]) > 0)
2520 coro_semaphore_adjust (aTHX_ av, 0); 3050 coro_semaphore_adjust (aTHX_ av, 0);
2521 3051
2522 frame->prepare = prepare_nop; 3052 frame->prepare = prepare_nop;
… …
2546 AvARRAY (av)[0] = AvARRAY (av)[1]; 3076 AvARRAY (av)[0] = AvARRAY (av)[1];
2547 AvARRAY (av)[1] = cb; 3077 AvARRAY (av)[1] = cb;
2548 3078
2549 cb = av_shift (av); 3079 cb = av_shift (av);
2550 3080
3081 if (SvTYPE (cb) == SVt_PVCV)
3082 {
3083 dSP;
3084 PUSHMARK (SP);
3085 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3086 PUTBACK;
3087 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3088 }
3089 else
3090 {
2551 api_ready (aTHX_ cb); 3091 api_ready (aTHX_ cb);
2552 sv_setiv (cb, 0); /* signal waiter */ 3092 sv_setiv (cb, 0); /* signal waiter */
3093 }
3094
2553 SvREFCNT_dec (cb); 3095 SvREFCNT_dec (cb);
2554 3096
2555 --count; 3097 --count;
2556 } 3098 }
2557} 3099}
… …
2566static void 3108static void
2567slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3109slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2568{ 3110{
2569 AV *av = (AV *)SvRV (arg [0]); 3111 AV *av = (AV *)SvRV (arg [0]);
2570 3112
3113 if (items >= 2)
3114 {
3115 SV *cb_cv = s_get_cv_croak (arg [1]);
3116 av_push (av, SvREFCNT_inc_NN (cb_cv));
3117
2571 if (SvIVX (AvARRAY (av)[0])) 3118 if (SvIVX (AvARRAY (av)[0]))
3119 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3120
3121 frame->prepare = prepare_nop;
3122 frame->check = slf_check_nop;
3123 }
3124 else if (SvIVX (AvARRAY (av)[0]))
2572 { 3125 {
2573 SvIVX (AvARRAY (av)[0]) = 0; 3126 SvIVX (AvARRAY (av)[0]) = 0;
2574 frame->prepare = prepare_nop; 3127 frame->prepare = prepare_nop;
2575 frame->check = slf_check_nop; 3128 frame->check = slf_check_nop;
2576 } 3129 }
2577 else 3130 else
2578 { 3131 {
2579 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3132 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2580 3133
2581 av_push (av, waiter); 3134 av_push (av, waiter);
2582 3135
2583 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3136 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2584 frame->prepare = prepare_schedule; 3137 frame->prepare = prepare_schedule;
… …
2602 3155
2603static void 3156static void
2604coro_aio_callback (pTHX_ CV *cv) 3157coro_aio_callback (pTHX_ CV *cv)
2605{ 3158{
2606 dXSARGS; 3159 dXSARGS;
2607 AV *state = (AV *)GENSUB_ARG; 3160 AV *state = (AV *)S_GENSUB_ARG;
2608 SV *coro = av_pop (state); 3161 SV *coro = av_pop (state);
2609 SV *data_sv = newSV (sizeof (struct io_state)); 3162 SV *data_sv = newSV (sizeof (struct io_state));
2610 3163
2611 av_extend (state, items - 1); 3164 av_extend (state, items - 1);
2612 3165
… …
2697 dSP; 3250 dSP;
2698 3251
2699 static SV *prio_cv; 3252 static SV *prio_cv;
2700 static SV *prio_sv; 3253 static SV *prio_sv;
2701 3254
2702 if (expect_false (!prio_cv)) 3255 if (ecb_expect_false (!prio_cv))
2703 { 3256 {
2704 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3257 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2705 prio_sv = newSViv (0); 3258 prio_sv = newSViv (0);
2706 } 3259 }
2707 3260
… …
2726 3279
2727 for (i = 0; i < items; ++i) 3280 for (i = 0; i < items; ++i)
2728 PUSHs (arg [i]); 3281 PUSHs (arg [i]);
2729 3282
2730 /* now push the callback closure */ 3283 /* now push the callback closure */
2731 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3284 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2732 3285
2733 /* now call the AIO function - we assume our request is uncancelable */ 3286 /* now call the AIO function - we assume our request is uncancelable */
2734 PUTBACK; 3287 PUTBACK;
2735 call_sv ((SV *)req, G_VOID | G_DISCARD); 3288 call_sv ((SV *)req, G_VOID | G_DISCARD);
2736 } 3289 }
2737 3290
2738 /* now that the requets is going, we loop toll we have a result */ 3291 /* now that the request is going, we loop till we have a result */
2739 frame->data = (void *)state; 3292 frame->data = (void *)state;
2740 frame->prepare = prepare_schedule; 3293 frame->prepare = prepare_schedule;
2741 frame->check = slf_check_aio_req; 3294 frame->check = slf_check_aio_req;
2742} 3295}
2743 3296
… …
2753 3306
2754/*****************************************************************************/ 3307/*****************************************************************************/
2755 3308
2756#if CORO_CLONE 3309#if CORO_CLONE
2757# include "clone.c" 3310# include "clone.c"
3311#endif
3312
3313/*****************************************************************************/
3314
3315static SV *
3316coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3317{
3318 SV *coro_sv;
3319 struct coro *coro;
3320 MAGIC *mg;
3321 HV *hv;
3322 SV *cb;
3323 int i;
3324
3325 if (argc > 0)
3326 {
3327 cb = s_get_cv_croak (argv [0]);
3328
3329 if (!is_coro)
3330 {
3331 if (CvISXSUB (cb))
3332 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3333
3334 if (!CvROOT (cb))
3335 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3336 }
3337 }
3338
3339 Newz (0, coro, 1, struct coro);
3340 coro->args = newAV ();
3341 coro->flags = CF_NEW;
3342
3343 if (coro_first) coro_first->prev = coro;
3344 coro->next = coro_first;
3345 coro_first = coro;
3346
3347 coro->hv = hv = newHV ();
3348 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3349 mg->mg_flags |= MGf_DUP;
3350 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3351
3352 if (argc > 0)
3353 {
3354 av_extend (coro->args, argc + is_coro - 1);
3355
3356 if (is_coro)
3357 {
3358 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3359 cb = (SV *)cv_coro_run;
3360 }
3361
3362 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3363
3364 for (i = 1; i < argc; i++)
3365 av_push (coro->args, newSVsv (argv [i]));
3366 }
3367
3368 return coro_sv;
3369}
3370
3371#ifndef __cplusplus
3372ecb_cold XS(boot_Coro__State);
3373#endif
3374
3375#if CORO_JIT
3376
3377static void ecb_noinline ecb_cold
3378pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3379{
3380 dSP;
3381 AV *av = newAV ();
3382
3383 av_store (av, 3, newSVuv (d));
3384 av_store (av, 2, newSVuv (c));
3385 av_store (av, 1, newSVuv (b));
3386 av_store (av, 0, newSVuv (a));
3387
3388 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3389
3390 PUTBACK;
3391}
3392
3393static void ecb_noinline ecb_cold
3394jit_init (pTHX)
3395{
3396 dSP;
3397 SV *load, *save;
3398 char *map_base;
3399 char *load_ptr, *save_ptr;
3400 STRLEN load_len, save_len, map_len;
3401 int count;
3402
3403 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3404
3405 PUSHMARK (SP);
3406#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3407# include "state.h"
3408#undef VARx
3409 count = call_pv ("Coro::State::_jit", G_ARRAY);
3410 SPAGAIN;
3411
3412 save = POPs; save_ptr = SvPVbyte (save, save_len);
3413 load = POPs; load_ptr = SvPVbyte (load, load_len);
3414
3415 map_len = load_len + save_len + 16;
3416
3417 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3418
3419 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3420
3421 load_perl_slots = (load_save_perl_slots_type)map_base;
3422 memcpy (map_base, load_ptr, load_len);
3423
3424 map_base += (load_len + 15) & ~15;
3425
3426 save_perl_slots = (load_save_perl_slots_type)map_base;
3427 memcpy (map_base, save_ptr, save_len);
3428
3429 /* we are good citizens and try to make the page read-only, so the evil evil */
3430 /* hackers might have it a bit more difficult */
3431 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3432
3433 PUTBACK;
3434 eval_pv ("undef &Coro::State::_jit", 1);
3435}
3436
2758#endif 3437#endif
2759 3438
2760MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3439MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2761 3440
2762PROTOTYPES: DISABLE 3441PROTOTYPES: DISABLE
… …
2767# if CORO_PTHREAD 3446# if CORO_PTHREAD
2768 coro_thx = PERL_GET_CONTEXT; 3447 coro_thx = PERL_GET_CONTEXT;
2769# endif 3448# endif
2770#endif 3449#endif
2771 BOOT_PAGESIZE; 3450 BOOT_PAGESIZE;
3451
3452 /* perl defines these to check for existance first, but why it doesn't */
3453 /* just create them one at init time is not clear to me, except for */
3454 /* programs trying to delete them, but... */
3455 /* anyway, we declare this as invalid and make sure they are initialised here */
3456 DEFSV;
3457 ERRSV;
2772 3458
2773 cctx_current = cctx_new_empty (); 3459 cctx_current = cctx_new_empty ();
2774 3460
2775 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3461 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2776 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3462 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
2816 coroapi.prepare_nop = prepare_nop; 3502 coroapi.prepare_nop = prepare_nop;
2817 coroapi.prepare_schedule = prepare_schedule; 3503 coroapi.prepare_schedule = prepare_schedule;
2818 coroapi.prepare_cede = prepare_cede; 3504 coroapi.prepare_cede = prepare_cede;
2819 coroapi.prepare_cede_notself = prepare_cede_notself; 3505 coroapi.prepare_cede_notself = prepare_cede_notself;
2820 3506
2821 { 3507 time_init (aTHX);
2822 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2823 3508
2824 if (!svp) croak ("Time::HiRes is required");
2825 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2826
2827 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2828 }
2829
2830 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3509 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3510#if CORO_JIT
3511 PUTBACK;
3512 jit_init (aTHX);
3513 SPAGAIN;
3514#endif
2831} 3515}
2832 3516
2833SV * 3517SV *
2834new (char *klass, ...) 3518new (SV *klass, ...)
2835 ALIAS: 3519 ALIAS:
2836 Coro::new = 1 3520 Coro::new = 1
2837 CODE: 3521 CODE:
2838{ 3522 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2839 struct coro *coro; 3523 OUTPUT:
2840 MAGIC *mg;
2841 HV *hv;
2842 CV *cb;
2843 int i;
2844
2845 if (items > 1)
2846 {
2847 cb = coro_sv_2cv (aTHX_ ST (1));
2848
2849 if (!ix)
2850 {
2851 if (CvISXSUB (cb))
2852 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2853
2854 if (!CvROOT (cb))
2855 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2856 }
2857 }
2858
2859 Newz (0, coro, 1, struct coro);
2860 coro->args = newAV ();
2861 coro->flags = CF_NEW;
2862
2863 if (coro_first) coro_first->prev = coro;
2864 coro->next = coro_first;
2865 coro_first = coro;
2866
2867 coro->hv = hv = newHV ();
2868 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2869 mg->mg_flags |= MGf_DUP;
2870 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2871
2872 if (items > 1)
2873 {
2874 av_extend (coro->args, items - 1 + ix - 1);
2875
2876 if (ix)
2877 {
2878 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2879 cb = cv_coro_run;
2880 }
2881
2882 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2883
2884 for (i = 2; i < items; i++)
2885 av_push (coro->args, newSVsv (ST (i)));
2886 }
2887}
2888 OUTPUT:
2889 RETVAL 3524 RETVAL
2890 3525
2891void 3526void
2892transfer (...) 3527transfer (...)
2893 PROTOTYPE: $$ 3528 PROTOTYPE: $$
2894 CODE: 3529 CODE:
2895 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3530 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2896 3531
2897bool
2898_destroy (SV *coro_sv)
2899 CODE:
2900 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2901 OUTPUT:
2902 RETVAL
2903
2904void 3532void
2905_exit (int code) 3533_exit (int code)
2906 PROTOTYPE: $ 3534 PROTOTYPE: $
2907 CODE: 3535 CODE:
2908 _exit (code); 3536 _exit (code);
… …
2910SV * 3538SV *
2911clone (Coro::State coro) 3539clone (Coro::State coro)
2912 CODE: 3540 CODE:
2913{ 3541{
2914#if CORO_CLONE 3542#if CORO_CLONE
2915 struct coro *ncoro = coro_clone (coro); 3543 struct coro *ncoro = coro_clone (aTHX_ coro);
2916 MAGIC *mg; 3544 MAGIC *mg;
2917 /* TODO: too much duplication */ 3545 /* TODO: too much duplication */
2918 ncoro->hv = newHV (); 3546 ncoro->hv = newHV ();
2919 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); 3547 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2920 mg->mg_flags |= MGf_DUP; 3548 mg->mg_flags |= MGf_DUP;
… …
2982 eval = 1 3610 eval = 1
2983 CODE: 3611 CODE:
2984{ 3612{
2985 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3613 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2986 { 3614 {
2987 struct coro temp; 3615 struct coro *current = SvSTATE_current;
3616 struct CoroSLF slf_save;
2988 3617
2989 if (!(coro->flags & CF_RUNNING)) 3618 if (current != coro)
2990 { 3619 {
2991 PUTBACK; 3620 PUTBACK;
2992 save_perl (aTHX_ &temp); 3621 save_perl (aTHX_ current);
2993 load_perl (aTHX_ coro); 3622 load_perl (aTHX_ coro);
3623 /* the coro is most likely in an active SLF call.
3624 * while not strictly required (the code we execute is
3625 * not allowed to call any SLF functions), it's cleaner
3626 * to reinitialise the slf_frame and restore it later.
3627 * This might one day allow us to actually do SLF calls
3628 * from code executed here.
3629 */
3630 slf_save = slf_frame;
3631 slf_frame.prepare = 0;
3632 SPAGAIN;
2994 } 3633 }
2995 3634
2996 {
2997 dSP;
2998 ENTER;
2999 SAVETMPS;
3000 PUTBACK;
3001 PUSHSTACK; 3635 PUSHSTACK;
3636
3002 PUSHMARK (SP); 3637 PUSHMARK (SP);
3638 PUTBACK;
3003 3639
3004 if (ix) 3640 if (ix)
3005 eval_sv (coderef, 0); 3641 eval_sv (coderef, 0);
3006 else 3642 else
3007 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3643 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3008 3644
3009 POPSTACK; 3645 POPSTACK;
3010 SPAGAIN; 3646 SPAGAIN;
3011 FREETMPS;
3012 LEAVE;
3013 PUTBACK;
3014 }
3015 3647
3016 if (!(coro->flags & CF_RUNNING)) 3648 if (current != coro)
3017 { 3649 {
3650 PUTBACK;
3651 slf_frame = slf_save;
3018 save_perl (aTHX_ coro); 3652 save_perl (aTHX_ coro);
3019 load_perl (aTHX_ &temp); 3653 load_perl (aTHX_ current);
3020 SPAGAIN; 3654 SPAGAIN;
3021 } 3655 }
3022 } 3656 }
3023} 3657}
3024 3658
… …
3027 PROTOTYPE: $ 3661 PROTOTYPE: $
3028 ALIAS: 3662 ALIAS:
3029 is_ready = CF_READY 3663 is_ready = CF_READY
3030 is_running = CF_RUNNING 3664 is_running = CF_RUNNING
3031 is_new = CF_NEW 3665 is_new = CF_NEW
3032 is_destroyed = CF_DESTROYED 3666 is_destroyed = CF_ZOMBIE
3667 is_zombie = CF_ZOMBIE
3668 is_suspended = CF_SUSPENDED
3033 CODE: 3669 CODE:
3034 RETVAL = boolSV (coro->flags & ix); 3670 RETVAL = boolSV (coro->flags & ix);
3035 OUTPUT: 3671 OUTPUT:
3036 RETVAL 3672 RETVAL
3037 3673
3038void 3674void
3039throw (Coro::State self, SV *throw = &PL_sv_undef) 3675throw (Coro::State self, SV *exception = &PL_sv_undef)
3040 PROTOTYPE: $;$ 3676 PROTOTYPE: $;$
3041 CODE: 3677 CODE:
3042{ 3678{
3043 struct coro *current = SvSTATE_current; 3679 struct coro *current = SvSTATE_current;
3044 SV **throwp = self == current ? &CORO_THROW : &self->except; 3680 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3045 SvREFCNT_dec (*throwp); 3681 SvREFCNT_dec (*exceptionp);
3046 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3682 SvGETMAGIC (exception);
3683 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3047} 3684}
3048 3685
3049void 3686void
3050api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3687api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3051 PROTOTYPE: $;$ 3688 PROTOTYPE: $;$
… …
3102 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3739 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3103 3740
3104 SV *tmp = *src; *src = *dst; *dst = tmp; 3741 SV *tmp = *src; *src = *dst; *dst = tmp;
3105 } 3742 }
3106 3743
3744void
3745cancel (Coro::State self)
3746 CODE:
3747 coro_state_destroy (aTHX_ self);
3748
3749SV *
3750enable_times (int enabled = enable_times)
3751 CODE:
3752{
3753 RETVAL = boolSV (enable_times);
3754
3755 if (enabled != enable_times)
3756 {
3757 enable_times = enabled;
3758
3759 coro_times_update ();
3760 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3761 }
3762}
3763 OUTPUT:
3764 RETVAL
3765
3766void
3767times (Coro::State self)
3768 PPCODE:
3769{
3770 struct coro *current = SvSTATE (coro_current);
3771
3772 if (ecb_expect_false (current == self))
3773 {
3774 coro_times_update ();
3775 coro_times_add (SvSTATE (coro_current));
3776 }
3777
3778 EXTEND (SP, 2);
3779 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3780 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3781
3782 if (ecb_expect_false (current == self))
3783 coro_times_sub (SvSTATE (coro_current));
3784}
3785
3786void
3787swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3788 CODE:
3789{
3790 struct coro *current = SvSTATE_current;
3791
3792 if (current == coro)
3793 SWAP_SVS (current);
3794
3795 if (!coro->swap_sv)
3796 coro->swap_sv = newAV ();
3797
3798 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3799 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3800
3801 if (current == coro)
3802 SWAP_SVS (current);
3803}
3804
3107 3805
3108MODULE = Coro::State PACKAGE = Coro 3806MODULE = Coro::State PACKAGE = Coro
3109 3807
3110BOOT: 3808BOOT:
3111{ 3809{
3112 int i;
3113
3114 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3115 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3116 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3812 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3117 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3118 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 3813 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3119 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 3814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3120 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 3815 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3121 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 3816 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3122 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 3817 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3123 3818
3124 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 3819 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3125 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 3820 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3126 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 3821 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3127 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 3822 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3128 3823
3129 coro_stash = gv_stashpv ("Coro", TRUE); 3824 coro_stash = gv_stashpv ("Coro", TRUE);
3130 3825
3131 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3826 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3132 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3827 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3133 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3828 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3134 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3829 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3135 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3830 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3136 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3831 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3137
3138 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3139 coro_ready[i] = newAV ();
3140 3832
3141 { 3833 {
3142 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3834 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3143 3835
3144 coroapi.schedule = api_schedule; 3836 coroapi.schedule = api_schedule;
… …
3154 sv_setiv (sv, (IV)&coroapi); 3846 sv_setiv (sv, (IV)&coroapi);
3155 SvREADONLY_on (sv); 3847 SvREADONLY_on (sv);
3156 } 3848 }
3157} 3849}
3158 3850
3851SV *
3852async (...)
3853 PROTOTYPE: &@
3854 CODE:
3855 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3856 api_ready (aTHX_ RETVAL);
3857 OUTPUT:
3858 RETVAL
3859
3860void
3861_destroy (Coro::State coro)
3862 CODE:
3863 /* used by the manager thread */
3864 coro_state_destroy (aTHX_ coro);
3865
3866void
3867on_destroy (Coro::State coro, SV *cb)
3868 CODE:
3869 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3870
3871void
3872join (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_join);
3875
3159void 3876void
3160terminate (...) 3877terminate (...)
3161 CODE: 3878 CODE:
3162 CORO_EXECUTE_SLF_XS (slf_init_terminate); 3879 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3163 3880
3164void 3881void
3882cancel (...)
3883 CODE:
3884 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3885
3886int
3887safe_cancel (Coro::State self, ...)
3888 C_ARGS: aTHX_ self, &ST (1), items - 1
3889
3890void
3165schedule (...) 3891schedule (...)
3166 CODE: 3892 CODE:
3167 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3893 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3168 3894
3169void 3895void
… …
3183 3909
3184void 3910void
3185cede_notself (...) 3911cede_notself (...)
3186 CODE: 3912 CODE:
3187 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 3913 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3188
3189void
3190_cancel (Coro::State self)
3191 CODE:
3192 coro_state_destroy (aTHX_ self);
3193 coro_call_on_destroy (aTHX_ self);
3194 3914
3195void 3915void
3196_set_current (SV *current) 3916_set_current (SV *current)
3197 PROTOTYPE: $ 3917 PROTOTYPE: $
3198 CODE: 3918 CODE:
… …
3202void 3922void
3203_set_readyhook (SV *hook) 3923_set_readyhook (SV *hook)
3204 PROTOTYPE: $ 3924 PROTOTYPE: $
3205 CODE: 3925 CODE:
3206 SvREFCNT_dec (coro_readyhook); 3926 SvREFCNT_dec (coro_readyhook);
3927 SvGETMAGIC (hook);
3928 if (SvOK (hook))
3929 {
3207 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3930 coro_readyhook = newSVsv (hook);
3931 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3932 }
3933 else
3934 {
3935 coro_readyhook = 0;
3936 CORO_READYHOOK = 0;
3937 }
3208 3938
3209int 3939int
3210prio (Coro::State coro, int newprio = 0) 3940prio (Coro::State coro, int newprio = 0)
3211 PROTOTYPE: $;$ 3941 PROTOTYPE: $;$
3212 ALIAS: 3942 ALIAS:
… …
3218 if (items > 1) 3948 if (items > 1)
3219 { 3949 {
3220 if (ix) 3950 if (ix)
3221 newprio = coro->prio - newprio; 3951 newprio = coro->prio - newprio;
3222 3952
3223 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3953 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3224 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3954 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3225 3955
3226 coro->prio = newprio; 3956 coro->prio = newprio;
3227 } 3957 }
3228} 3958}
3229 OUTPUT: 3959 OUTPUT:
… …
3244 RETVAL = coro_nready; 3974 RETVAL = coro_nready;
3245 OUTPUT: 3975 OUTPUT:
3246 RETVAL 3976 RETVAL
3247 3977
3248void 3978void
3979suspend (Coro::State self)
3980 PROTOTYPE: $
3981 CODE:
3982 self->flags |= CF_SUSPENDED;
3983
3984void
3985resume (Coro::State self)
3986 PROTOTYPE: $
3987 CODE:
3988 self->flags &= ~CF_SUSPENDED;
3989
3990void
3249_pool_handler (...) 3991_pool_handler (...)
3250 CODE: 3992 CODE:
3251 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 3993 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3252 3994
3253void 3995void
… …
3264 for (i = 1; i < items; ++i) 4006 for (i = 1; i < items; ++i)
3265 av_push (av, SvREFCNT_inc_NN (ST (i))); 4007 av_push (av, SvREFCNT_inc_NN (ST (i)));
3266 4008
3267 if ((SV *)hv == &PL_sv_undef) 4009 if ((SV *)hv == &PL_sv_undef)
3268 { 4010 {
3269 PUSHMARK (SP); 4011 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3270 EXTEND (SP, 2);
3271 PUSHs (sv_Coro);
3272 PUSHs ((SV *)cv_pool_handler);
3273 PUTBACK;
3274 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3275 SPAGAIN;
3276
3277 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4012 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4013 SvREFCNT_dec (sv);
3278 } 4014 }
3279 4015
3280 { 4016 {
3281 struct coro *coro = SvSTATE_hv (hv); 4017 struct coro *coro = SvSTATE_hv (hv);
3282 4018
… …
3306rouse_wait (...) 4042rouse_wait (...)
3307 PROTOTYPE: ;$ 4043 PROTOTYPE: ;$
3308 PPCODE: 4044 PPCODE:
3309 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4045 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3310 4046
4047void
4048on_enter (SV *block)
4049 ALIAS:
4050 on_leave = 1
4051 PROTOTYPE: &
4052 CODE:
4053{
4054 struct coro *coro = SvSTATE_current;
4055 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4056
4057 block = s_get_cv_croak (block);
4058
4059 if (!*avp)
4060 *avp = newAV ();
4061
4062 av_push (*avp, SvREFCNT_inc (block));
4063
4064 if (!ix)
4065 on_enterleave_call (aTHX_ block);
4066
4067 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4068 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4069 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4070}
4071
3311 4072
3312MODULE = Coro::State PACKAGE = PerlIO::cede 4073MODULE = Coro::State PACKAGE = PerlIO::cede
3313 4074
3314BOOT: 4075BOOT:
3315 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4076 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3318MODULE = Coro::State PACKAGE = Coro::Semaphore 4079MODULE = Coro::State PACKAGE = Coro::Semaphore
3319 4080
3320SV * 4081SV *
3321new (SV *klass, SV *count = 0) 4082new (SV *klass, SV *count = 0)
3322 CODE: 4083 CODE:
4084{
4085 int semcnt = 1;
4086
4087 if (count)
4088 {
4089 SvGETMAGIC (count);
4090
4091 if (SvOK (count))
4092 semcnt = SvIV (count);
4093 }
4094
3323 RETVAL = sv_bless ( 4095 RETVAL = sv_bless (
3324 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4096 coro_waitarray_new (aTHX_ semcnt),
3325 GvSTASH (CvGV (cv)) 4097 GvSTASH (CvGV (cv))
3326 ); 4098 );
4099}
3327 OUTPUT: 4100 OUTPUT:
3328 RETVAL 4101 RETVAL
3329 4102
3330# helper for Coro::Channel 4103# helper for Coro::Channel and others
3331SV * 4104SV *
3332_alloc (int count) 4105_alloc (int count)
3333 CODE: 4106 CODE:
3334 RETVAL = coro_waitarray_new (aTHX_ count); 4107 RETVAL = coro_waitarray_new (aTHX_ count);
3335 OUTPUT: 4108 OUTPUT:
… …
3393 for (i = 1; i <= wcount; ++i) 4166 for (i = 1; i <= wcount; ++i)
3394 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4167 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3395 } 4168 }
3396} 4169}
3397 4170
4171MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4172
4173void
4174_may_delete (SV *sem, int count, unsigned int extra_refs)
4175 PPCODE:
4176{
4177 AV *av = (AV *)SvRV (sem);
4178
4179 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4180 && AvFILLp (av) == 0 /* no waiters, just count */
4181 && SvIV (AvARRAY (av)[0]) == count)
4182 XSRETURN_YES;
4183
4184 XSRETURN_NO;
4185}
4186
3398MODULE = Coro::State PACKAGE = Coro::Signal 4187MODULE = Coro::State PACKAGE = Coro::Signal
3399 4188
3400SV * 4189SV *
3401new (SV *klass) 4190new (SV *klass)
3402 CODE: 4191 CODE:
… …
3473 4262
3474void 4263void
3475_register (char *target, char *proto, SV *req) 4264_register (char *target, char *proto, SV *req)
3476 CODE: 4265 CODE:
3477{ 4266{
3478 CV *req_cv = coro_sv_2cv (aTHX_ req); 4267 SV *req_cv = s_get_cv_croak (req);
3479 /* newXSproto doesn't return the CV on 5.8 */ 4268 /* newXSproto doesn't return the CV on 5.8 */
3480 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4269 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3481 sv_setpv ((SV *)slf_cv, proto); 4270 sv_setpv ((SV *)slf_cv, proto);
3482 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4271 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3483} 4272}
3484 4273
4274MODULE = Coro::State PACKAGE = Coro::Select
4275
4276void
4277patch_pp_sselect ()
4278 CODE:
4279 if (!coro_old_pp_sselect)
4280 {
4281 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4282 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4283 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4284 }
4285
4286void
4287unpatch_pp_sselect ()
4288 CODE:
4289 if (coro_old_pp_sselect)
4290 {
4291 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4292 coro_old_pp_sselect = 0;
4293 }
4294

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