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Comparing Coro/Coro/State.xs (file contents):
Revision 1.393 by root, Fri Apr 29 17:38:56 2011 UTC vs.
Revision 1.467 by root, Sun Jun 26 21:46:03 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */ 1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS 2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3 3
4#define NDEBUG 1 4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5 5
6#include "libcoro/coro.c" 6#include "libcoro/coro.c"
7 7
8#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
9#define PERL_EXT 9#define PERL_EXT
… …
13#include "XSUB.h" 13#include "XSUB.h"
14#include "perliol.h" 14#include "perliol.h"
15 15
16#include "schmorp.h" 16#include "schmorp.h"
17 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
18#include <stdio.h> 23#include <stdio.h>
19#include <errno.h> 24#include <errno.h>
20#include <assert.h> 25#include <assert.h>
21 26
27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
22#ifndef SVs_PADSTALE 35#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0 36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
24#endif 66#endif
25 67
26#if defined(_WIN32) 68#if defined(_WIN32)
27# undef HAS_GETTIMEOFDAY 69# undef HAS_GETTIMEOFDAY
28# undef setjmp 70# undef setjmp
… …
31# define setjmp _setjmp /* deep magic */ 73# define setjmp _setjmp /* deep magic */
32#else 74#else
33# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
34#endif 76#endif
35 77
36#ifdef HAVE_MMAP
37# include <unistd.h>
38# include <sys/mman.h>
39# ifndef MAP_ANONYMOUS
40# ifdef MAP_ANON
41# define MAP_ANONYMOUS MAP_ANON
42# else
43# undef HAVE_MMAP
44# endif
45# endif
46# include <limits.h>
47# ifndef PAGESIZE
48# define PAGESIZE pagesize
49# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
50static long pagesize;
51# else
52# define BOOT_PAGESIZE (void)0
53# endif
54#else
55# define PAGESIZE 0
56# define BOOT_PAGESIZE (void)0
57#endif
58
59#if CORO_USE_VALGRIND
60# include <valgrind/valgrind.h>
61#endif
62
63/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
64static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
65 80
66#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
67# undef CORO_STACKGUARD 82# define HAS_SCOPESTACK_NAME 1
68#endif
69
70#ifndef CORO_STACKGUARD
71# define CORO_STACKGUARD 0
72#endif 83#endif
73 84
74/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
75#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
76# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
86# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
87#endif 98#endif
88 99
89#define IN_DESTRUCT PL_dirty 100#define IN_DESTRUCT PL_dirty
90 101
91#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x)
93# define expect(expr,value) __builtin_expect ((expr), (value))
94# define INLINE static inline
95#else
96# define attribute(x)
97# define expect(expr,value) (expr)
98# define INLINE static
99#endif
100
101#define expect_false(expr) expect ((expr) != 0, 0)
102#define expect_true(expr) expect ((expr) != 0, 1)
103
104#define NOINLINE attribute ((noinline))
105
106#include "CoroAPI.h" 102#include "CoroAPI.h"
107#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
108 104
109#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
110# if CORO_PTHREAD 106# if CORO_PTHREAD
… …
120# define CORO_CLOCK_MONOTONIC 1 116# define CORO_CLOCK_MONOTONIC 1
121# define CORO_CLOCK_THREAD_CPUTIME_ID 3 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
122# endif 118# endif
123#endif 119#endif
124 120
121/* perl usually suppressed asserts. for debugging, we sometimes force it to be on */
122#if 0
123# undef NDEBUG
124# include <assert.h>
125#endif
126
125static double (*nvtime)(); /* so why doesn't it take void? */ 127static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]); 128static void (*u2time)(pTHX_ UV ret[2]);
127 129
128/* we hijack an hopefully unused CV flag for our purposes */ 130/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000 131#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX); 132static OP *pp_slf (pTHX);
133static void slf_destroy (pTHX_ struct coro *coro);
131 134
132static U32 cctx_gen; 135static U32 cctx_gen;
133static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
134static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
135static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
… …
143 146
144static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
145static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
146static SV *rv_diehook; 149static SV *rv_diehook;
147static SV *rv_warnhook; 150static SV *rv_warnhook;
148static HV *hv_sig; /* %SIG */
149 151
150/* async_pool helper stuff */ 152/* async_pool helper stuff */
151static SV *sv_pool_rss; 153static SV *sv_pool_rss;
152static SV *sv_pool_size; 154static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */ 155static SV *sv_async_pool_idle; /* description string */
… …
165static char times_valid; 167static char times_valid;
166 168
167static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
168static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
169 171
170enum { 172enum
173{
171 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
172 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
173 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
174 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
175 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
180typedef struct coro_cctx 183typedef struct coro_cctx
181{ 184{
182 struct coro_cctx *next; 185 struct coro_cctx *next;
183 186
184 /* the stack */ 187 /* the stack */
185 void *sptr; 188 struct coro_stack stack;
186 size_t ssize;
187 189
188 /* cpu state */ 190 /* cpu state */
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 191 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
192#ifndef NDEBUG
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 193 JMPENV *idle_te; /* same as idle_sp, but for top_env */
194#endif
191 JMPENV *top_env; 195 JMPENV *top_env;
192 coro_context cctx; 196 coro_context cctx;
193 197
194 U32 gen; 198 U32 gen;
195#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
… …
200 204
201static coro_cctx *cctx_current; /* the currently running cctx */ 205static coro_cctx *cctx_current; /* the currently running cctx */
202 206
203/*****************************************************************************/ 207/*****************************************************************************/
204 208
209static MGVTBL coro_state_vtbl;
210
205enum { 211enum
212{
206 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
207 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
208 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 216 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 217 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ 218 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
212}; 219};
213 220
214/* the structure where most of the perl state is stored, overlaid on the cxstack */ 221/* the structure where most of the perl state is stored, overlaid on the cxstack */
215typedef struct 222typedef struct
216{ 223{
217 SV *defsv;
218 AV *defav;
219 SV *errsv;
220 SV *irsgv;
221 HV *hinthv;
222#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
223# include "state.h" 225 #include "state.h"
224#undef VAR
225} perl_slots; 226} perl_slots;
226 227
228/* how many context stack entries do we need for perl_slots */
227#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
228 230
229/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
230struct coro { 232struct coro
233{
231 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
232 coro_cctx *cctx; 235 coro_cctx *cctx;
233 236
234 /* ready queue */ 237 /* ready queue */
235 struct coro *next_ready; 238 struct coro *next_ready;
… …
237 /* state data */ 240 /* state data */
238 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
239 AV *mainstack; 242 AV *mainstack;
240 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
241 244
242 CV *startcv; /* the CV to execute */ 245 CV *startcv; /* the CV to execute */
243 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
244 int refcnt; /* coroutines are refcounted, yes */
245 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
247 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
248 249
249 /* statistics */ 250 /* statistics */
250 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
251 252
252 /* coro process data */ 253 /* coro process data */
253 int prio; 254 int prio;
254 SV *except; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
255 SV *rouse_cb; 256 SV *rouse_cb; /* last rouse callback */
257 AV *on_destroy; /* callbacks or coros to notify on destroy */
258 AV *status; /* the exit status list */
256 259
257 /* async_pool */ 260 /* async_pool */
258 SV *saved_deffh; 261 SV *saved_deffh;
259 SV *invoke_cb; 262 SV *invoke_cb;
260 AV *invoke_av; 263 AV *invoke_av;
261 264
262 /* on_enter/on_leave */ 265 /* on_enter/on_leave */
263 AV *on_enter; 266 AV *on_enter; AV *on_enter_xs;
264 AV *on_leave; 267 AV *on_leave; AV *on_leave_xs;
265 268
266 /* swap_sv */ 269 /* swap_sv */
267 AV *swap_sv; 270 AV *swap_sv;
268 271
269 /* times */ 272 /* times */
… …
292 295
293/* for Coro.pm */ 296/* for Coro.pm */
294static SV *coro_current; 297static SV *coro_current;
295static SV *coro_readyhook; 298static SV *coro_readyhook;
296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 299static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate; 300static CV *cv_coro_run;
298static struct coro *coro_first; 301static struct coro *coro_first;
299#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
303
304/** JIT *********************************************************************/
305
306#if CORO_JIT
307 /* APPLE doesn't have mmap though */
308 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
309 #ifndef CORO_JIT_TYPE
310 #if ECB_AMD64 && CORO_JIT_UNIXY
311 #define CORO_JIT_TYPE "amd64-unix"
312 #elif __i386 && CORO_JIT_UNIXY
313 #define CORO_JIT_TYPE "x86-unix"
314 #endif
315 #endif
316#endif
317
318#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
319 #undef CORO_JIT
320#endif
321
322#if CORO_JIT
323 typedef void (*load_save_perl_slots_type)(perl_slots *);
324 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
325#endif
300 326
301/** Coro::Select ************************************************************/ 327/** Coro::Select ************************************************************/
302 328
303static OP *(*coro_old_pp_sselect) (pTHX); 329static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select; 330static SV *coro_select_select;
… …
320 346
321/** time stuff **************************************************************/ 347/** time stuff **************************************************************/
322 348
323#ifdef HAS_GETTIMEOFDAY 349#ifdef HAS_GETTIMEOFDAY
324 350
325static void 351ecb_inline void
326coro_u2time (pTHX_ UV ret[2]) 352coro_u2time (pTHX_ UV ret[2])
327{ 353{
328 struct timeval tv; 354 struct timeval tv;
329 gettimeofday (&tv, 0); 355 gettimeofday (&tv, 0);
330 356
331 ret [0] = tv.tv_sec; 357 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec; 358 ret [1] = tv.tv_usec;
333} 359}
334 360
335static double 361ecb_inline double
336coro_nvtime () 362coro_nvtime (void)
337{ 363{
338 struct timeval tv; 364 struct timeval tv;
339 gettimeofday (&tv, 0); 365 gettimeofday (&tv, 0);
340 366
341 return tv.tv_sec + tv.tv_usec * 1e-6; 367 return tv.tv_sec + tv.tv_usec * 1e-6;
342} 368}
343 369
344static void 370ecb_inline void
345time_init (pTHX) 371time_init (pTHX)
346{ 372{
347 nvtime = coro_nvtime; 373 nvtime = coro_nvtime;
348 u2time = coro_u2time; 374 u2time = coro_u2time;
349} 375}
350 376
351#else 377#else
352 378
353static void 379ecb_inline void
354time_init (pTHX) 380time_init (pTHX)
355{ 381{
356 SV **svp; 382 SV **svp;
357 383
358 require_pv ("Time/HiRes.pm"); 384 require_pv ("Time/HiRes.pm");
359 385
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 386 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361 387
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught"); 388 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); 389 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364 390
… …
370 396
371#endif 397#endif
372 398
373/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
374 400
375static SV * 401static SV * ecb_noinline
376coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
377{ 403{
378#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
380 get_sv (name, create); 406 get_sv (name, create);
381#endif 407#endif
382 return get_sv (name, create); 408 return get_sv (name, create);
383} 409}
384 410
385static AV * 411static AV * ecb_noinline
386coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
387{ 413{
388#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
390 get_av (name, create); 416 get_av (name, create);
391#endif 417#endif
392 return get_av (name, create); 418 return get_av (name, create);
393} 419}
394 420
395static HV * 421static HV * ecb_noinline
396coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
397{ 423{
398#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
400 get_hv (name, create); 426 get_hv (name, create);
401#endif 427#endif
402 return get_hv (name, create); 428 return get_hv (name, create);
403} 429}
404 430
405INLINE void 431ecb_inline void
406coro_times_update () 432coro_times_update (void)
407{ 433{
408#ifdef coro_clock_gettime 434#ifdef coro_clock_gettime
409 struct timespec ts; 435 struct timespec ts;
410 436
411 ts.tv_sec = ts.tv_nsec = 0; 437 ts.tv_sec = ts.tv_nsec = 0;
… …
423 time_real [0] = tv [0]; 449 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000; 450 time_real [1] = tv [1] * 1000;
425#endif 451#endif
426} 452}
427 453
428INLINE void 454ecb_inline void
429coro_times_add (struct coro *c) 455coro_times_add (struct coro *c)
430{ 456{
431 c->t_real [1] += time_real [1]; 457 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 458 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0]; 459 c->t_real [0] += time_real [0];
… …
435 c->t_cpu [1] += time_cpu [1]; 461 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 462 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0]; 463 c->t_cpu [0] += time_cpu [0];
438} 464}
439 465
440INLINE void 466ecb_inline void
441coro_times_sub (struct coro *c) 467coro_times_sub (struct coro *c)
442{ 468{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 469 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1]; 470 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0]; 471 c->t_real [0] -= time_real [0];
… …
453/* magic glue */ 479/* magic glue */
454 480
455#define CORO_MAGIC_type_cv 26 481#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext 482#define CORO_MAGIC_type_state PERL_MAGIC_ext
457 483
458#define CORO_MAGIC_NN(sv, type) \ 484#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \ 485 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \ 486 ? SvMAGIC (sv) \
461 : mg_find (sv, type)) 487 : mg_find (sv, type))
462 488
463#define CORO_MAGIC(sv, type) \ 489#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \ 490 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \ 491 ? CORO_MAGIC_NN (sv, type) \
466 : 0) 492 : 0)
467 493
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 494#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 495#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470 496
471INLINE struct coro * 497ecb_inline MAGIC *
472SvSTATE_ (pTHX_ SV *coro) 498SvSTATEhv_p (pTHX_ SV *coro)
473{ 499{
474 HV *stash;
475 MAGIC *mg; 500 MAGIC *mg;
476 501
502 if (ecb_expect_true (
503 SvTYPE (coro) == SVt_PVHV
504 && (mg = CORO_MAGIC_state (coro))
505 && mg->mg_virtual == &coro_state_vtbl
506 ))
507 return mg;
508
509 return 0;
510}
511
512ecb_inline struct coro *
513SvSTATE_ (pTHX_ SV *coro_sv)
514{
515 MAGIC *mg;
516
477 if (SvROK (coro)) 517 if (SvROK (coro_sv))
478 coro = SvRV (coro); 518 coro_sv = SvRV (coro_sv);
479 519
480 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 520 mg = SvSTATEhv_p (aTHX_ coro_sv);
521 if (!mg)
481 croak ("Coro::State object required"); 522 croak ("Coro::State object required");
482 523
483 stash = SvSTASH (coro);
484 if (expect_false (stash != coro_stash && stash != coro_state_stash))
485 {
486 /* very slow, but rare, check */
487 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
488 croak ("Coro::State object required");
489 }
490
491 mg = CORO_MAGIC_state (coro);
492 return (struct coro *)mg->mg_ptr; 524 return (struct coro *)mg->mg_ptr;
493} 525}
494 526
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 527#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496 528
… …
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 531#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500 532
501/*****************************************************************************/ 533/*****************************************************************************/
502/* padlist management and caching */ 534/* padlist management and caching */
503 535
504static AV * 536ecb_inline PADLIST *
505coro_derive_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
506{ 538{
507 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
508 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
509 544
510 newpadlist = newAV (); 545#if NEWPADAPI
546
547 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
548 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
549 while (!PadlistARRAY (padlist)[off - 1])
550 --off;
551
552 Perl_pad_push (aTHX_ padlist, off);
553
554 newpad = PadlistARRAY (padlist)[off];
555 PadlistARRAY (padlist)[off] = 0;
556
557#else
558
559#if PERL_VERSION_ATLEAST (5,10,0)
560 Perl_pad_push (aTHX_ padlist, off);
561#else
562 Perl_pad_push (aTHX_ padlist, off, 1);
563#endif
564
565 newpad = PadlistARRAY (padlist)[off];
566 PadlistMAX (padlist) = off - 1;
567
568#endif
569
570 newPADLIST (newpadlist);
571#if !PERL_VERSION_ATLEAST(5,15,3)
572 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
511 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
512#if PERL_VERSION_ATLEAST (5,10,0)
513 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
514#else
515 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
516#endif 574#endif
517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
518 --AvFILLp (padlist);
519 575
520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 576 /* Already extended to 2 elements by newPADLIST. */
521 av_store (newpadlist, 1, (SV *)newpad); 577 PadlistMAX (newpadlist) = 1;
578
579 padnames = PadlistNAMES (padlist);
580 ++PadnamelistREFCNT (padnames);
581 PadlistNAMES (newpadlist) = padnames;
582
583 PadlistARRAY (newpadlist)[1] = newpad;
522 584
523 return newpadlist; 585 return newpadlist;
524} 586}
525 587
526static void 588ecb_inline void
527free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
528{ 590{
529 /* may be during global destruction */ 591 /* may be during global destruction */
530 if (!IN_DESTRUCT) 592 if (!IN_DESTRUCT)
531 { 593 {
532 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
533 595
534 while (i > 0) /* special-case index 0 */ 596 while (i > 0) /* special-case index 0 */
535 { 597 {
536 /* we try to be extra-careful here */ 598 /* we try to be extra-careful here */
537 AV *av = (AV *)AvARRAY (padlist)[i--]; 599 PAD *pad = PadlistARRAY (padlist)[i--];
538 I32 j = AvFILLp (av);
539 600
601 if (pad)
602 {
603 I32 j = PadMAX (pad);
604
540 while (j >= 0) 605 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
542 607
543 AvFILLp (av) = -1; 608 PadMAX (pad) = -1;
544 SvREFCNT_dec (av); 609 SvREFCNT_dec (pad);
610 }
545 } 611 }
546 612
547 SvREFCNT_dec (AvARRAY (padlist)[0]); 613 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
548 614
615#if NEWPADAPI
616 Safefree (PadlistARRAY (padlist));
617 Safefree (padlist);
618#else
549 AvFILLp (padlist) = -1; 619 AvFILLp (padlist) = -1;
620 AvREAL_off (padlist);
550 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
551 } 623 }
552} 624}
553 625
554static int 626static int
555coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
556{ 628{
557 AV *padlist; 629 PADLIST *padlist;
558 AV *av = (AV *)mg->mg_obj; 630 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
631 size_t len = *(size_t *)mg->mg_ptr;
559 632
560 /* perl manages to free our internal AV and _then_ call us */ 633 /* perl manages to free our internal AV and _then_ call us */
561 if (IN_DESTRUCT) 634 if (IN_DESTRUCT)
562 return 0; 635 return 0;
563 636
564 /* casting is fun. */ 637 while (len--)
565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
566 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
567
568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
569 639
570 return 0; 640 return 0;
571} 641}
572 642
573static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
574 0, 0, 0, 0, 644 0, 0, 0, 0,
575 coro_cv_free 645 coro_cv_free
576}; 646};
577 647
578/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
579static void 649ecb_inline void
580get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
581{ 651{
582 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
583 AV *av; 653 size_t *lenp;
584 654
585 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
586 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
587 else 657 else
588 { 658 {
589#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
590 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
591 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
… …
597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
598#endif 668#endif
599 } 669 }
600} 670}
601 671
602static void 672ecb_inline void
603put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
604{ 674{
605 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
606 AV *av;
607 676
608 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 679 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
680 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
681 mg->mg_len = 1; /* so mg_free frees mg_ptr */
682 }
683 else
684 Renew (mg->mg_ptr,
685 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
686 char);
610 687
611 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
612
613 if (expect_false (AvFILLp (av) >= AvMAX (av)))
614 av_extend (av, AvFILLp (av) + 1);
615
616 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
617} 689}
618 690
619/** load & save, init *******************************************************/ 691/** load & save, init *******************************************************/
620 692
693ecb_inline void
694swap_sv (SV *a, SV *b)
695{
696 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
697 SV tmp;
698
699 /* swap sv_any */
700 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
701
702 /* swap sv_flags */
703 SvFLAGS (&tmp) = SvFLAGS (a);
704 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
705 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
706
707#if PERL_VERSION_ATLEAST (5,10,0)
708 /* perl 5.10 and later complicates this _quite_ a bit, but it also
709 * is much faster, so no quarrels here. alternatively, we could
710 * sv_upgrade to avoid this.
711 */
712 {
713 /* swap sv_u */
714 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
715
716 /* if SvANY points to the head, we need to adjust the pointers,
717 * as the pointer for a still points to b, and maybe vice versa.
718 */
719 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
720 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
721 svany_in_head_set |= 1 << SVt_NV;
722 #endif
723
724 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
725
726 if (svany_in_head (SvTYPE (a)))
727 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
728
729 if (svany_in_head (SvTYPE (b)))
730 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
731 }
732#endif
733}
734
621/* swap sv heads, at least logically */ 735/* swap sv heads, at least logically */
622static void 736static void
623swap_svs (pTHX_ Coro__State c) 737swap_svs_enter (pTHX_ Coro__State c)
624{ 738{
625 int i; 739 int i;
626 740
627 for (i = 0; i <= AvFILLp (c->swap_sv); ) 741 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
628 { 742 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
629 SV *a = AvARRAY (c->swap_sv)[i++];
630 SV *b = AvARRAY (c->swap_sv)[i++];
631
632 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
633 SV tmp;
634
635 /* swap sv_any */
636 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
637
638 /* swap sv_flags */
639 SvFLAGS (&tmp) = SvFLAGS (a);
640 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
641 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
642
643#if PERL_VERSION_ATLEAST (5,10,0)
644 /* perl 5.10 complicates this _quite_ a bit, but it also is
645 * much faster, so no quarrels here. alternatively, we could
646 * sv_upgrade to avoid this.
647 */
648 {
649 /* swap sv_u */
650 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
651
652 /* if SvANY points to the head, we need to adjust the pointers,
653 * as the pointer for a still points to b, and maybe vice versa.
654 */
655 #define svany_in_head(type) \
656 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
657
658 if (svany_in_head (SvTYPE (a)))
659 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
660
661 if (svany_in_head (SvTYPE (b)))
662 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
663 }
664#endif
665 }
666} 743}
667 744
745static void
746swap_svs_leave (pTHX_ Coro__State c)
747{
748 int i;
749
750 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
751 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
752}
753
668#define SWAP_SVS(coro) \ 754#define SWAP_SVS_ENTER(coro) \
669 if (expect_false ((coro)->swap_sv)) \ 755 if (ecb_expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro)) 756 swap_svs_enter (aTHX_ (coro))
757
758#define SWAP_SVS_LEAVE(coro) \
759 if (ecb_expect_false ((coro)->swap_sv)) \
760 swap_svs_leave (aTHX_ (coro))
671 761
672static void 762static void
673on_enterleave_call (pTHX_ SV *cb); 763on_enterleave_call (pTHX_ SV *cb);
674 764
675static void 765static void
… …
678 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
679 c->slot = 0; 769 c->slot = 0;
680 770
681 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
682 772
683 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
684 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
685 GvSV (PL_errgv) = slot->errsv; 775#else
686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
688
689 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
690 # include "state.h" 777 #include "state.h"
691 #undef VAR 778#endif
692 779
693 { 780 {
694 dSP; 781 dSP;
695 782
696 CV *cv; 783 CV *cv;
697 784
698 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
699 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
700 { 787 {
701 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
702 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
703 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
704 } 791 }
705 792
706 PUTBACK; 793 PUTBACK;
707 } 794 }
708 795
709 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
710 CORO_THROW = c->except; 797 CORO_THROW = c->except;
711 798
712 if (expect_false (enable_times)) 799 if (ecb_expect_false (enable_times))
713 { 800 {
714 if (expect_false (!times_valid)) 801 if (ecb_expect_false (!times_valid))
715 coro_times_update (); 802 coro_times_update ();
716 803
717 coro_times_sub (c); 804 coro_times_sub (c);
718 } 805 }
719 806
720 if (expect_false (c->on_enter)) 807 if (ecb_expect_false (c->on_enter))
721 { 808 {
722 int i; 809 int i;
723 810
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 811 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 812 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
726 } 813 }
727 814
815 if (ecb_expect_false (c->on_enter_xs))
816 {
817 int i;
818
819 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
820 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
821 }
822
728 SWAP_SVS (c); 823 SWAP_SVS_ENTER (c);
729} 824}
730 825
731static void 826static void
732save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
733{ 828{
734 SWAP_SVS (c); 829 SWAP_SVS_LEAVE (c);
735 830
831 if (ecb_expect_false (c->on_leave_xs))
832 {
833 int i;
834
835 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
836 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
837 }
838
736 if (expect_false (c->on_leave)) 839 if (ecb_expect_false (c->on_leave))
737 { 840 {
738 int i; 841 int i;
739 842
740 for (i = AvFILLp (c->on_leave); i >= 0; --i) 843 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 844 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 } 845 }
743 846
744 times_valid = 0; 847 times_valid = 0;
745 848
746 if (expect_false (enable_times)) 849 if (ecb_expect_false (enable_times))
747 { 850 {
748 coro_times_update (); times_valid = 1; 851 coro_times_update (); times_valid = 1;
749 coro_times_add (c); 852 coro_times_add (c);
750 } 853 }
751 854
… …
765 868
766 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
767 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
768 for (;;) 871 for (;;)
769 { 872 {
770 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
771 { 874 {
772 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
773 876
774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 877 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
775 { 878 {
776 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
777 880
778 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
779 { 882 {
780 EXTEND (SP, 3); 883 EXTEND (SP, 3);
781 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
782 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
783 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
786 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
787 } 890 }
788 } 891 }
789 } 892 }
790 893
791 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
792 break; 895 break;
793 896
794 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
795 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
796 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
798 901
799 PUTBACK; 902 PUTBACK;
800 } 903 }
801 904
802 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
803 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
804 if (SLOT_COUNT >= 1) CXINC;
805 if (SLOT_COUNT >= 2) CXINC;
806 if (SLOT_COUNT >= 3) CXINC;
807 { 907 {
808 unsigned int i; 908 unsigned int i;
909
809 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
810 CXINC; 911 CXINC;
811 } 912
812 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
813 915
814 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
815 917
816 { 918 {
817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
818 920
819 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
820 slot->defsv = DEFSV; 922 save_perl_slots (slot);
821 slot->errsv = ERRSV; 923#else
822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
824
825 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
826 # include "state.h" 925 #include "state.h"
827 #undef VAR 926#endif
828 } 927 }
829} 928}
830 929
831/* 930/*
832 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
… …
838# define coro_init_stacks(thx) init_stacks () 937# define coro_init_stacks(thx) init_stacks ()
839#else 938#else
840static void 939static void
841coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
842{ 941{
843 PL_curstackinfo = new_stackinfo(32, 8); 942 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
844 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
845 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
846 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
847 946
848 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
863#endif 962#endif
864 963
865 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
866 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
867 PL_scopestack_max = 8; 966 PL_scopestack_max = 8;
967#if HAS_SCOPESTACK_NAME
968 New(54,PL_scopestack_name,8,const char*);
969#endif
868 970
869 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
870 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
871 PL_savestack_max = 24; 973 PL_savestack_max = 24;
974#if PERL_VERSION_ATLEAST (5,24,0)
975 /* perl 5.24 moves SS_MAXPUSH optimisation from */
976 /* the header macros to PL_savestack_max */
977 PL_savestack_max -= SS_MAXPUSH;
978#endif
872 979
873#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
874 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
875 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
876 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
900 } 1007 }
901 1008
902 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
903 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
904 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
905 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
906#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
907 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
908#endif 1018#endif
909} 1019}
… …
939 } 1049 }
940 1050
941 return rss; 1051 return rss;
942} 1052}
943 1053
944/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
945
946static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
947static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
948static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
949 1055
950/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
951#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
952#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
953 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
954 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
955#endif 1061#endif
956 1062
1063/* this will be a patched copy of PL_vtbl_sigelem */
1064static MGVTBL coro_sigelem_vtbl;
1065
1066static int ecb_cold
1067coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1068{
1069 char *key = SvPV_nolen ((SV *)name);
1070
1071 /* do what mg_copy normally does */
1072 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1073 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1074
1075 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1076 if (*key == '_'
1077 && (strEQ (key, "__DIE__")
1078 || strEQ (key, "__WARN__")))
1079 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1080
1081 return 1;
1082}
1083
1084/* perl does not have a %SIG vtbl, we provide one so we can override */
1085/* the magic vtbl for the __DIE__ and __WARN__ members */
1086static const MGVTBL coro_sig_vtbl = {
1087 0, 0, 0, 0, 0,
1088 coro_sig_copy
1089};
1090
957/* 1091/*
958 * This overrides the default magic get method of %SIG elements. 1092 * This overrides the default magic get method of %SIG elements.
959 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1093 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
960 * and instead of trying to save and restore the hash elements, we just provide 1094 * and instead of trying to save and restore the hash elements (extremely slow),
961 * readback here. 1095 * we just provide our own readback here.
962 */ 1096 */
963static int 1097static int ecb_cold
964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1098coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
965{ 1099{
966 const char *s = MgPV_nolen_const (mg); 1100 const char *s = MgPV_nolen_const (mg);
1101 /* the key must be either __DIE__ or __WARN__ here */
1102 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
967 1103
968 if (*s == '_') 1104 SV *ssv;
969 {
970 SV **svp = 0;
971 1105
972 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
973 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
974
975 if (svp) 1106 if (!*svp)
976 { 1107 ssv = &PL_sv_undef;
977 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1108 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
978 return 0; 1109 ssv = sv_2mortal (newRV_inc (*svp));
979 } 1110 else
980 } 1111 ssv = *svp;
981 1112
982 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1113 sv_setsv (sv, ssv);
1114 return 0;
983} 1115}
984 1116
985static int 1117static int ecb_cold
986coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1118coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
987{ 1119{
988 const char *s = MgPV_nolen_const (mg); 1120 const char *s = MgPV_nolen_const (mg);
1121 /* the key must be either __DIE__ or __WARN__ here */
1122 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
989 1123
990 if (*s == '_')
991 {
992 SV **svp = 0;
993
994 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
995 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
996
997 if (svp)
998 {
999 SV *old = *svp; 1124 SV *old = *svp;
1000 *svp = 0; 1125 *svp = 0;
1001 SvREFCNT_dec (old); 1126 SvREFCNT_dec (old);
1002 return 0; 1127 return 0;
1003 }
1004 }
1005
1006 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1007} 1128}
1008 1129
1009static int 1130static int ecb_cold
1010coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1131coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1011{ 1132{
1012 const char *s = MgPV_nolen_const (mg); 1133 const char *s = MgPV_nolen_const (mg);
1134 /* the key must be either __DIE__ or __WARN__ here */
1135 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1013 1136
1014 if (*s == '_')
1015 {
1016 SV **svp = 0;
1017
1018 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
1019 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
1020
1021 if (svp)
1022 {
1023 SV *old = *svp; 1137 SV *old = *svp;
1024 *svp = SvOK (sv) ? newSVsv (sv) : 0; 1138 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1025 SvREFCNT_dec (old); 1139 SvREFCNT_dec (old);
1026 return 0; 1140 return 0;
1027 }
1028 }
1029
1030 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1031} 1141}
1032 1142
1033static void 1143static void
1034prepare_nop (pTHX_ struct coro_transfer_args *ta) 1144prepare_nop (pTHX_ struct coro_transfer_args *ta)
1035{ 1145{
… …
1047slf_check_repeat (pTHX_ struct CoroSLF *frame) 1157slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{ 1158{
1049 return 1; 1159 return 1;
1050} 1160}
1051 1161
1162/** coroutine stack handling ************************************************/
1163
1052static UNOP init_perl_op; 1164static UNOP init_perl_op;
1053 1165
1054static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1166ecb_noinline static void /* noinline to keep it out of the transfer fast path */
1055init_perl (pTHX_ struct coro *coro) 1167init_perl (pTHX_ struct coro *coro)
1056{ 1168{
1057 /* 1169 /*
1058 * emulate part of the perl startup here. 1170 * emulate part of the perl startup here.
1059 */ 1171 */
… …
1074 PL_parser = 0; 1186 PL_parser = 0;
1075#endif 1187#endif
1076 PL_hints = 0; 1188 PL_hints = 0;
1077 1189
1078 /* recreate the die/warn hooks */ 1190 /* recreate the die/warn hooks */
1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1191 PL_diehook = SvREFCNT_inc (rv_diehook);
1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1192 PL_warnhook = SvREFCNT_inc (rv_warnhook);
1081 1193
1082 GvSV (PL_defgv) = newSV (0); 1194 GvSV (PL_defgv) = newSV (0);
1083 GvAV (PL_defgv) = coro->args; coro->args = 0; 1195 GvAV (PL_defgv) = coro->args; coro->args = 0;
1084 GvSV (PL_errgv) = newSV (0); 1196 GvSV (PL_errgv) = newSV (0);
1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1197 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0; 1198 GvHV (PL_hintgv) = newHV ();
1199#if PERL_VERSION_ATLEAST (5,10,0)
1200 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1201#endif
1087 PL_rs = newSVsv (GvSV (irsgv)); 1202 PL_rs = newSVsv (GvSV (irsgv));
1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1203 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
1089 1204
1090 { 1205 {
1091 dSP; 1206 dSP;
… …
1106 /* this newly created coroutine might be run on an existing cctx which most 1221 /* this newly created coroutine might be run on an existing cctx which most
1107 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1222 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1108 */ 1223 */
1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1224 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1110 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1225 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1226 slf_frame.destroy = 0;
1111 1227
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1228 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1113 init_perl_op.op_next = PL_op; 1229 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB; 1230 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf; 1231 init_perl_op.op_ppaddr = pp_slf;
… …
1118 PL_op = (OP *)&init_perl_op; 1234 PL_op = (OP *)&init_perl_op;
1119 1235
1120 /* copy throw, in case it was set before init_perl */ 1236 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except; 1237 CORO_THROW = coro->except;
1122 1238
1123 SWAP_SVS (coro); 1239 SWAP_SVS_ENTER (coro);
1124 1240
1125 if (expect_false (enable_times)) 1241 if (ecb_expect_false (enable_times))
1126 { 1242 {
1127 coro_times_update (); 1243 coro_times_update ();
1128 coro_times_sub (coro); 1244 coro_times_sub (coro);
1129 } 1245 }
1130} 1246}
… …
1154destroy_perl (pTHX_ struct coro *coro) 1270destroy_perl (pTHX_ struct coro *coro)
1155{ 1271{
1156 SV *svf [9]; 1272 SV *svf [9];
1157 1273
1158 { 1274 {
1275 SV *old_current = SvRV (coro_current);
1159 struct coro *current = SvSTATE_current; 1276 struct coro *current = SvSTATE (old_current);
1160 1277
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1278 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162 1279
1163 save_perl (aTHX_ current); 1280 save_perl (aTHX_ current);
1281
1282 /* this will cause transfer_check to croak on block*/
1283 SvRV_set (coro_current, (SV *)coro->hv);
1284
1164 load_perl (aTHX_ coro); 1285 load_perl (aTHX_ coro);
1165 1286
1287 /* restore swapped sv's */
1288 SWAP_SVS_LEAVE (coro);
1289
1166 coro_unwind_stacks (aTHX); 1290 coro_unwind_stacks (aTHX);
1291
1167 coro_destruct_stacks (aTHX); 1292 coro_destruct_stacks (aTHX);
1168 1293
1169 /* restore swapped sv's */
1170 SWAP_SVS (coro);
1171
1172 // now save some sv's to be free'd later 1294 /* now save some sv's to be free'd later */
1173 svf [0] = GvSV (PL_defgv); 1295 svf [0] = GvSV (PL_defgv);
1174 svf [1] = (SV *)GvAV (PL_defgv); 1296 svf [1] = (SV *)GvAV (PL_defgv);
1175 svf [2] = GvSV (PL_errgv); 1297 svf [2] = GvSV (PL_errgv);
1176 svf [3] = (SV *)PL_defoutgv; 1298 svf [3] = (SV *)PL_defoutgv;
1177 svf [4] = PL_rs; 1299 svf [4] = PL_rs;
… …
1179 svf [6] = (SV *)GvHV (PL_hintgv); 1301 svf [6] = (SV *)GvHV (PL_hintgv);
1180 svf [7] = PL_diehook; 1302 svf [7] = PL_diehook;
1181 svf [8] = PL_warnhook; 1303 svf [8] = PL_warnhook;
1182 assert (9 == sizeof (svf) / sizeof (*svf)); 1304 assert (9 == sizeof (svf) / sizeof (*svf));
1183 1305
1306 SvRV_set (coro_current, old_current);
1307
1184 load_perl (aTHX_ current); 1308 load_perl (aTHX_ current);
1185 } 1309 }
1186 1310
1187 { 1311 {
1188 unsigned int i; 1312 unsigned int i;
… …
1192 1316
1193 SvREFCNT_dec (coro->saved_deffh); 1317 SvREFCNT_dec (coro->saved_deffh);
1194 SvREFCNT_dec (coro->rouse_cb); 1318 SvREFCNT_dec (coro->rouse_cb);
1195 SvREFCNT_dec (coro->invoke_cb); 1319 SvREFCNT_dec (coro->invoke_cb);
1196 SvREFCNT_dec (coro->invoke_av); 1320 SvREFCNT_dec (coro->invoke_av);
1321 SvREFCNT_dec (coro->on_enter_xs);
1322 SvREFCNT_dec (coro->on_leave_xs);
1197 } 1323 }
1198} 1324}
1199 1325
1200INLINE void 1326ecb_inline void
1201free_coro_mortal (pTHX) 1327free_coro_mortal (pTHX)
1202{ 1328{
1203 if (expect_true (coro_mortal)) 1329 if (ecb_expect_true (coro_mortal))
1204 { 1330 {
1205 SvREFCNT_dec (coro_mortal); 1331 SvREFCNT_dec ((SV *)coro_mortal);
1206 coro_mortal = 0; 1332 coro_mortal = 0;
1207 } 1333 }
1208} 1334}
1209 1335
1210static int 1336static int
… …
1264 1390
1265 if (PL_curcop != &PL_compiling) 1391 if (PL_curcop != &PL_compiling)
1266 { 1392 {
1267 SV **cb; 1393 SV **cb;
1268 1394
1269 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1395 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1270 { 1396 {
1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1397 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1272 1398
1273 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1399 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1274 { 1400 {
… …
1343 1469
1344 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1470 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1345} 1471}
1346 1472
1347/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1473/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1348static void NOINLINE 1474static void ecb_noinline
1349cctx_prepare (pTHX) 1475cctx_prepare (pTHX)
1350{ 1476{
1351 PL_top_env = &PL_start_env; 1477 PL_top_env = &PL_start_env;
1352 1478
1353 if (cctx_current->flags & CC_TRACE) 1479 if (cctx_current->flags & CC_TRACE)
… …
1364 slf_frame.prepare = slf_prepare_set_stacklevel; 1490 slf_frame.prepare = slf_prepare_set_stacklevel;
1365 slf_frame.check = slf_check_set_stacklevel; 1491 slf_frame.check = slf_check_set_stacklevel;
1366} 1492}
1367 1493
1368/* the tail of transfer: execute stuff we can only do after a transfer */ 1494/* the tail of transfer: execute stuff we can only do after a transfer */
1369INLINE void 1495ecb_inline void
1370transfer_tail (pTHX) 1496transfer_tail (pTHX)
1371{ 1497{
1372 free_coro_mortal (aTHX); 1498 free_coro_mortal (aTHX);
1499}
1500
1501/* try to exit the same way perl's main function would do */
1502/* we do not bother resetting the environment or other things *7
1503/* that are not, uhm, essential */
1504/* this obviously also doesn't work when perl is embedded */
1505static void ecb_noinline ecb_cold
1506perlish_exit (pTHX)
1507{
1508 int exitstatus = perl_destruct (PL_curinterp);
1509 perl_free (PL_curinterp);
1510 exit (exitstatus);
1373} 1511}
1374 1512
1375/* 1513/*
1376 * this is a _very_ stripped down perl interpreter ;) 1514 * this is a _very_ stripped down perl interpreter ;)
1377 */ 1515 */
… …
1404 * coro body here, as perl_run destroys these. Likewise, we cannot catch 1542 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1405 * runtime errors here, as this is just a random interpreter, not a thread. 1543 * runtime errors here, as this is just a random interpreter, not a thread.
1406 */ 1544 */
1407 1545
1408 /* 1546 /*
1547 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1548 * requires PL_scopestack_ix, so do it here if required.
1549 */
1550 if (!PL_scopestack_ix)
1551 ENTER;
1552
1553 /*
1409 * If perl-run returns we assume exit() was being called or the coro 1554 * If perl-run returns we assume exit() was being called or the coro
1410 * fell off the end, which seems to be the only valid (non-bug) 1555 * fell off the end, which seems to be the only valid (non-bug)
1411 * reason for perl_run to return. We try to exit by jumping to the 1556 * reason for perl_run to return. We try to mimic whatever perl is normally
1412 * bootstrap-time "top" top_env, as we cannot restore the "main" 1557 * doing in that case. YMMV.
1413 * coroutine as Coro has no such concept.
1414 * This actually isn't valid with the pthread backend, but OSes requiring
1415 * that backend are too broken to do it in a standards-compliant way.
1416 */ 1558 */
1417 PL_top_env = main_top_env; 1559 perlish_exit (aTHX);
1418 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1419 } 1560 }
1420} 1561}
1421 1562
1422static coro_cctx * 1563static coro_cctx *
1423cctx_new () 1564cctx_new (void)
1424{ 1565{
1425 coro_cctx *cctx; 1566 coro_cctx *cctx;
1426 1567
1427 ++cctx_count; 1568 ++cctx_count;
1428 New (0, cctx, 1, coro_cctx); 1569 New (0, cctx, 1, coro_cctx);
… …
1434 return cctx; 1575 return cctx;
1435} 1576}
1436 1577
1437/* create a new cctx only suitable as source */ 1578/* create a new cctx only suitable as source */
1438static coro_cctx * 1579static coro_cctx *
1439cctx_new_empty () 1580cctx_new_empty (void)
1440{ 1581{
1441 coro_cctx *cctx = cctx_new (); 1582 coro_cctx *cctx = cctx_new ();
1442 1583
1443 cctx->sptr = 0; 1584 cctx->stack.sptr = 0;
1444 coro_create (&cctx->cctx, 0, 0, 0, 0); 1585 coro_create (&cctx->cctx, 0, 0, 0, 0);
1445 1586
1446 return cctx; 1587 return cctx;
1447} 1588}
1448 1589
1449/* create a new cctx suitable as destination/running a perl interpreter */ 1590/* create a new cctx suitable as destination/running a perl interpreter */
1450static coro_cctx * 1591static coro_cctx *
1451cctx_new_run () 1592cctx_new_run (void)
1452{ 1593{
1453 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1454 void *stack_start;
1455 size_t stack_size;
1456 1595
1457#if HAVE_MMAP 1596 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1458 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1459 /* mmap supposedly does allocate-on-write for us */
1460 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1461
1462 if (cctx->sptr != (void *)-1)
1463 {
1464 #if CORO_STACKGUARD
1465 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1466 #endif
1467 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1468 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1469 cctx->flags |= CC_MAPPED;
1470 } 1597 {
1471 else
1472#endif
1473 {
1474 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1475 New (0, cctx->sptr, cctx_stacksize, long);
1476
1477 if (!cctx->sptr)
1478 {
1479 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1598 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1480 _exit (EXIT_FAILURE); 1599 _exit (EXIT_FAILURE);
1481 }
1482
1483 stack_start = cctx->sptr;
1484 stack_size = cctx->ssize;
1485 } 1600 }
1486 1601
1487 #if CORO_USE_VALGRIND
1488 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1489 #endif
1490
1491 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1602 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1492 1603
1493 return cctx; 1604 return cctx;
1494} 1605}
1495 1606
1496static void 1607static void
… …
1502 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current)); 1613 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1503 1614
1504 --cctx_count; 1615 --cctx_count;
1505 coro_destroy (&cctx->cctx); 1616 coro_destroy (&cctx->cctx);
1506 1617
1507 /* coro_transfer creates new, empty cctx's */ 1618 coro_stack_free (&cctx->stack);
1508 if (cctx->sptr)
1509 {
1510 #if CORO_USE_VALGRIND
1511 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1512 #endif
1513
1514#if HAVE_MMAP
1515 if (cctx->flags & CC_MAPPED)
1516 munmap (cctx->sptr, cctx->ssize);
1517 else
1518#endif
1519 Safefree (cctx->sptr);
1520 }
1521 1619
1522 Safefree (cctx); 1620 Safefree (cctx);
1523} 1621}
1524 1622
1525/* wether this cctx should be destructed */ 1623/* wether this cctx should be destructed */
1526#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1624#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1527 1625
1528static coro_cctx * 1626static coro_cctx *
1529cctx_get (pTHX) 1627cctx_get (pTHX)
1530{ 1628{
1531 while (expect_true (cctx_first)) 1629 while (ecb_expect_true (cctx_first))
1532 { 1630 {
1533 coro_cctx *cctx = cctx_first; 1631 coro_cctx *cctx = cctx_first;
1534 cctx_first = cctx->next; 1632 cctx_first = cctx->next;
1535 --cctx_idle; 1633 --cctx_idle;
1536 1634
1537 if (expect_true (!CCTX_EXPIRED (cctx))) 1635 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1538 return cctx; 1636 return cctx;
1539 1637
1540 cctx_destroy (cctx); 1638 cctx_destroy (cctx);
1541 } 1639 }
1542 1640
… …
1544} 1642}
1545 1643
1546static void 1644static void
1547cctx_put (coro_cctx *cctx) 1645cctx_put (coro_cctx *cctx)
1548{ 1646{
1549 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1647 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1550 1648
1551 /* free another cctx if overlimit */ 1649 /* free another cctx if overlimit */
1552 if (expect_false (cctx_idle >= cctx_max_idle)) 1650 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1553 { 1651 {
1554 coro_cctx *first = cctx_first; 1652 coro_cctx *first = cctx_first;
1555 cctx_first = first->next; 1653 cctx_first = first->next;
1556 --cctx_idle; 1654 --cctx_idle;
1557 1655
… …
1568static void 1666static void
1569transfer_check (pTHX_ struct coro *prev, struct coro *next) 1667transfer_check (pTHX_ struct coro *prev, struct coro *next)
1570{ 1668{
1571 /* TODO: throwing up here is considered harmful */ 1669 /* TODO: throwing up here is considered harmful */
1572 1670
1573 if (expect_true (prev != next)) 1671 if (ecb_expect_true (prev != next))
1574 { 1672 {
1575 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1673 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1576 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1674 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1577 1675
1578 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1676 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1579 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1677 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1580 1678
1581#if !PERL_VERSION_ATLEAST (5,10,0) 1679#if !PERL_VERSION_ATLEAST (5,10,0)
1582 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1680 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1583 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1681 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1584#endif 1682#endif
1585 } 1683 }
1586} 1684}
1587 1685
1588/* always use the TRANSFER macro */ 1686/* always use the TRANSFER macro */
1589static void NOINLINE /* noinline so we have a fixed stackframe */ 1687static void ecb_noinline /* noinline so we have a fixed stackframe */
1590transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1688transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1591{ 1689{
1592 dSTACKLEVEL; 1690 dSTACKLEVEL;
1593 1691
1594 /* sometimes transfer is only called to set idle_sp */ 1692 /* sometimes transfer is only called to set idle_sp */
1595 if (expect_false (!prev)) 1693 if (ecb_expect_false (!prev))
1596 { 1694 {
1597 cctx_current->idle_sp = STACKLEVEL; 1695 cctx_current->idle_sp = STACKLEVEL;
1598 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1696 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1599 } 1697 }
1600 else if (expect_true (prev != next)) 1698 else if (ecb_expect_true (prev != next))
1601 { 1699 {
1602 coro_cctx *cctx_prev; 1700 coro_cctx *cctx_prev;
1603 1701
1604 if (expect_false (prev->flags & CF_NEW)) 1702 if (ecb_expect_false (prev->flags & CF_NEW))
1605 { 1703 {
1606 /* create a new empty/source context */ 1704 /* create a new empty/source context */
1607 prev->flags &= ~CF_NEW; 1705 prev->flags &= ~CF_NEW;
1608 prev->flags |= CF_RUNNING; 1706 prev->flags |= CF_RUNNING;
1609 } 1707 }
… …
1612 next->flags |= CF_RUNNING; 1710 next->flags |= CF_RUNNING;
1613 1711
1614 /* first get rid of the old state */ 1712 /* first get rid of the old state */
1615 save_perl (aTHX_ prev); 1713 save_perl (aTHX_ prev);
1616 1714
1617 if (expect_false (next->flags & CF_NEW)) 1715 if (ecb_expect_false (next->flags & CF_NEW))
1618 { 1716 {
1619 /* need to start coroutine */ 1717 /* need to start coroutine */
1620 next->flags &= ~CF_NEW; 1718 next->flags &= ~CF_NEW;
1621 /* setup coroutine call */ 1719 /* setup coroutine call */
1622 init_perl (aTHX_ next); 1720 init_perl (aTHX_ next);
1623 } 1721 }
1624 else 1722 else
1625 load_perl (aTHX_ next); 1723 load_perl (aTHX_ next);
1626 1724
1627 /* possibly untie and reuse the cctx */ 1725 /* possibly untie and reuse the cctx */
1628 if (expect_true ( 1726 if (ecb_expect_true (
1629 cctx_current->idle_sp == STACKLEVEL 1727 cctx_current->idle_sp == STACKLEVEL
1630 && !(cctx_current->flags & CC_TRACE) 1728 && !(cctx_current->flags & CC_TRACE)
1631 && !force_cctx 1729 && !force_cctx
1632 )) 1730 ))
1633 { 1731 {
1634 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1732 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1635 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1733 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1636 1734
1637 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1735 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1638 /* without this the next cctx_get might destroy the running cctx while still in use */ 1736 /* without this the next cctx_get might destroy the running cctx while still in use */
1639 if (expect_false (CCTX_EXPIRED (cctx_current))) 1737 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1640 if (expect_true (!next->cctx)) 1738 if (ecb_expect_true (!next->cctx))
1641 next->cctx = cctx_get (aTHX); 1739 next->cctx = cctx_get (aTHX);
1642 1740
1643 cctx_put (cctx_current); 1741 cctx_put (cctx_current);
1644 } 1742 }
1645 else 1743 else
1646 prev->cctx = cctx_current; 1744 prev->cctx = cctx_current;
1647 1745
1648 ++next->usecount; 1746 ++next->usecount;
1649 1747
1650 cctx_prev = cctx_current; 1748 cctx_prev = cctx_current;
1651 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1749 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1652 1750
1653 next->cctx = 0; 1751 next->cctx = 0;
1654 1752
1655 if (expect_false (cctx_prev != cctx_current)) 1753 if (ecb_expect_false (cctx_prev != cctx_current))
1656 { 1754 {
1657 cctx_prev->top_env = PL_top_env; 1755 cctx_prev->top_env = PL_top_env;
1658 PL_top_env = cctx_current->top_env; 1756 PL_top_env = cctx_current->top_env;
1659 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1757 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1660 } 1758 }
… …
1666#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1764#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1667#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1765#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1668 1766
1669/** high level stuff ********************************************************/ 1767/** high level stuff ********************************************************/
1670 1768
1769/* this function is actually Coro, not Coro::State, but we call it from here */
1770/* because it is convenient - but it hasn't been declared yet for that reason */
1671static int 1771static void
1772coro_call_on_destroy (pTHX_ struct coro *coro);
1773
1774static void
1672coro_state_destroy (pTHX_ struct coro *coro) 1775coro_state_destroy (pTHX_ struct coro *coro)
1673{ 1776{
1674 if (coro->flags & CF_DESTROYED) 1777 if (coro->flags & CF_ZOMBIE)
1675 return 0; 1778 return;
1676 1779
1677 if (coro->on_destroy && !PL_dirty)
1678 coro->on_destroy (aTHX_ coro); 1780 slf_destroy (aTHX_ coro);
1679 1781
1680 /*
1681 * The on_destroy above most likely is from an SLF call.
1682 * Since by definition the SLF call will not finish when we destroy
1683 * the coro, we will have to force-finish it here, otherwise
1684 * cleanup functions cannot call SLF functions.
1685 */
1686 coro->slf_frame.prepare = 0;
1687
1688 coro->flags |= CF_DESTROYED; 1782 coro->flags |= CF_ZOMBIE;
1689 1783
1690 if (coro->flags & CF_READY) 1784 if (coro->flags & CF_READY)
1691 { 1785 {
1692 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1786 /* reduce nready, as destroying a ready coro effectively unreadies it */
1693 /* alternative: look through all ready queues and remove the coro */ 1787 /* alternative: look through all ready queues and remove the coro */
1694 --coro_nready; 1788 --coro_nready;
1695 } 1789 }
1696 else 1790 else
1697 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1791 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1792
1793 if (coro->next) coro->next->prev = coro->prev;
1794 if (coro->prev) coro->prev->next = coro->next;
1795 if (coro == coro_first) coro_first = coro->next;
1698 1796
1699 if (coro->mainstack 1797 if (coro->mainstack
1700 && coro->mainstack != main_mainstack 1798 && coro->mainstack != main_mainstack
1701 && coro->slot 1799 && coro->slot
1702 && !PL_dirty) 1800 && !PL_dirty)
1703 destroy_perl (aTHX_ coro); 1801 destroy_perl (aTHX_ coro);
1704 1802
1705 if (coro->next) coro->next->prev = coro->prev;
1706 if (coro->prev) coro->prev->next = coro->next;
1707 if (coro == coro_first) coro_first = coro->next;
1708
1709 cctx_destroy (coro->cctx); 1803 cctx_destroy (coro->cctx);
1710 SvREFCNT_dec (coro->startcv); 1804 SvREFCNT_dec (coro->startcv);
1711 SvREFCNT_dec (coro->args); 1805 SvREFCNT_dec (coro->args);
1712 SvREFCNT_dec (coro->swap_sv); 1806 SvREFCNT_dec (coro->swap_sv);
1713 SvREFCNT_dec (CORO_THROW); 1807 SvREFCNT_dec (CORO_THROW);
1714 1808
1715 return 1; 1809 coro_call_on_destroy (aTHX_ coro);
1810
1811 /* more destruction mayhem in coro_state_free */
1716} 1812}
1717 1813
1718static int 1814static int
1719coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1815coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1720{ 1816{
1721 struct coro *coro = (struct coro *)mg->mg_ptr; 1817 struct coro *coro = (struct coro *)mg->mg_ptr;
1722 mg->mg_ptr = 0; 1818 mg->mg_ptr = 0;
1723 1819
1724 coro->hv = 0;
1725
1726 if (--coro->refcnt < 0)
1727 {
1728 coro_state_destroy (aTHX_ coro); 1820 coro_state_destroy (aTHX_ coro);
1821 SvREFCNT_dec (coro->on_destroy);
1822 SvREFCNT_dec (coro->status);
1823
1729 Safefree (coro); 1824 Safefree (coro);
1730 }
1731 1825
1732 return 0; 1826 return 0;
1733} 1827}
1734 1828
1735static int 1829static int ecb_cold
1736coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1830coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1737{ 1831{
1738 struct coro *coro = (struct coro *)mg->mg_ptr; 1832 /* called when perl clones the current process the slow way (windows process emulation) */
1739 1833 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1740 ++coro->refcnt; 1834 mg->mg_ptr = 0;
1835 mg->mg_virtual = 0;
1741 1836
1742 return 0; 1837 return 0;
1743} 1838}
1744 1839
1745static MGVTBL coro_state_vtbl = { 1840static MGVTBL coro_state_vtbl = {
… …
1770 TRANSFER (ta, 1); 1865 TRANSFER (ta, 1);
1771} 1866}
1772 1867
1773/** Coro ********************************************************************/ 1868/** Coro ********************************************************************/
1774 1869
1775INLINE void 1870ecb_inline void
1776coro_enq (pTHX_ struct coro *coro) 1871coro_enq (pTHX_ struct coro *coro)
1777{ 1872{
1778 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1873 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1779 1874
1780 SvREFCNT_inc_NN (coro->hv); 1875 SvREFCNT_inc_NN (coro->hv);
… …
1782 coro->next_ready = 0; 1877 coro->next_ready = 0;
1783 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1878 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1784 ready [1] = coro; 1879 ready [1] = coro;
1785} 1880}
1786 1881
1787INLINE struct coro * 1882ecb_inline struct coro *
1788coro_deq (pTHX) 1883coro_deq (pTHX)
1789{ 1884{
1790 int prio; 1885 int prio;
1791 1886
1792 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1887 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1845{ 1940{
1846 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1941 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1847} 1942}
1848 1943
1849/* expects to own a reference to next->hv */ 1944/* expects to own a reference to next->hv */
1850INLINE void 1945ecb_inline void
1851prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1946prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1852{ 1947{
1853 SV *prev_sv = SvRV (coro_current); 1948 SV *prev_sv = SvRV (coro_current);
1854 1949
1855 ta->prev = SvSTATE_hv (prev_sv); 1950 ta->prev = SvSTATE_hv (prev_sv);
… …
1868{ 1963{
1869 for (;;) 1964 for (;;)
1870 { 1965 {
1871 struct coro *next = coro_deq (aTHX); 1966 struct coro *next = coro_deq (aTHX);
1872 1967
1873 if (expect_true (next)) 1968 if (ecb_expect_true (next))
1874 { 1969 {
1875 /* cannot transfer to destroyed coros, skip and look for next */ 1970 /* cannot transfer to destroyed coros, skip and look for next */
1876 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1971 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1877 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1972 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1878 else 1973 else
1879 { 1974 {
1880 next->flags &= ~CF_READY; 1975 next->flags &= ~CF_READY;
1881 --coro_nready; 1976 --coro_nready;
… …
1889 /* nothing to schedule: call the idle handler */ 1984 /* nothing to schedule: call the idle handler */
1890 if (SvROK (sv_idle) 1985 if (SvROK (sv_idle)
1891 && SvOBJECT (SvRV (sv_idle))) 1986 && SvOBJECT (SvRV (sv_idle)))
1892 { 1987 {
1893 if (SvRV (sv_idle) == SvRV (coro_current)) 1988 if (SvRV (sv_idle) == SvRV (coro_current))
1989 {
1990 require_pv ("Carp");
1991
1992 {
1993 dSP;
1994
1995 ENTER;
1996 SAVETMPS;
1997
1998 PUSHMARK (SP);
1894 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught"); 1999 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2000 PUTBACK;
2001 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2002
2003 FREETMPS;
2004 LEAVE;
2005 }
2006 }
1895 2007
1896 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2008 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1897 api_ready (aTHX_ SvRV (sv_idle)); 2009 api_ready (aTHX_ SvRV (sv_idle));
1898 --coro_nready; 2010 --coro_nready;
1899 } 2011 }
… …
1914 } 2026 }
1915 } 2027 }
1916 } 2028 }
1917} 2029}
1918 2030
1919INLINE void 2031ecb_inline void
1920prepare_cede (pTHX_ struct coro_transfer_args *ta) 2032prepare_cede (pTHX_ struct coro_transfer_args *ta)
1921{ 2033{
1922 api_ready (aTHX_ coro_current); 2034 api_ready (aTHX_ coro_current);
1923 prepare_schedule (aTHX_ ta); 2035 prepare_schedule (aTHX_ ta);
1924} 2036}
1925 2037
1926INLINE void 2038ecb_inline void
1927prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2039prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1928{ 2040{
1929 SV *prev = SvRV (coro_current); 2041 SV *prev = SvRV (coro_current);
1930 2042
1931 if (coro_nready) 2043 if (coro_nready)
… …
1961{ 2073{
1962 struct coro_transfer_args ta; 2074 struct coro_transfer_args ta;
1963 2075
1964 prepare_cede (aTHX_ &ta); 2076 prepare_cede (aTHX_ &ta);
1965 2077
1966 if (expect_true (ta.prev != ta.next)) 2078 if (ecb_expect_true (ta.prev != ta.next))
1967 { 2079 {
1968 TRANSFER (ta, 1); 2080 TRANSFER (ta, 1);
1969 return 1; 2081 return 1;
1970 } 2082 }
1971 else 2083 else
… …
2014 coro->slot->runops = RUNOPS_DEFAULT; 2126 coro->slot->runops = RUNOPS_DEFAULT;
2015 } 2127 }
2016} 2128}
2017 2129
2018static void 2130static void
2131coro_push_av (pTHX_ AV *av, I32 gimme_v)
2132{
2133 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2134 {
2135 dSP;
2136
2137 if (gimme_v == G_SCALAR)
2138 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2139 else
2140 {
2141 int i;
2142 EXTEND (SP, AvFILLp (av) + 1);
2143
2144 for (i = 0; i <= AvFILLp (av); ++i)
2145 PUSHs (AvARRAY (av)[i]);
2146 }
2147
2148 PUTBACK;
2149 }
2150}
2151
2152static void
2153coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2154{
2155 if (!coro->on_destroy)
2156 coro->on_destroy = newAV ();
2157
2158 av_push (coro->on_destroy, cb);
2159}
2160
2161static void
2162slf_destroy_join (pTHX_ struct CoroSLF *frame)
2163{
2164 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2165}
2166
2167static int
2168slf_check_join (pTHX_ struct CoroSLF *frame)
2169{
2170 struct coro *coro = (struct coro *)frame->data;
2171
2172 if (!coro->status)
2173 return 1;
2174
2175 frame->destroy = 0;
2176
2177 coro_push_av (aTHX_ coro->status, GIMME_V);
2178
2179 SvREFCNT_dec ((SV *)coro->hv);
2180
2181 return 0;
2182}
2183
2184static void
2185slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{
2187 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2188
2189 if (items > 1)
2190 croak ("join called with too many arguments");
2191
2192 if (coro->status)
2193 frame->prepare = prepare_nop;
2194 else
2195 {
2196 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2197 frame->prepare = prepare_schedule;
2198 }
2199
2200 frame->check = slf_check_join;
2201 frame->destroy = slf_destroy_join;
2202 frame->data = (void *)coro;
2203 SvREFCNT_inc (coro->hv);
2204}
2205
2206static void
2019coro_call_on_destroy (pTHX_ struct coro *coro) 2207coro_call_on_destroy (pTHX_ struct coro *coro)
2020{ 2208{
2021 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2209 AV *od = coro->on_destroy;
2022 2210
2023 if (on_destroyp) 2211 if (!od)
2024 { 2212 return;
2025 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2026 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2027 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2028 2213
2214 coro->on_destroy = 0;
2215 sv_2mortal ((SV *)od);
2216
2029 while (AvFILLp (on_destroy) >= 0) 2217 while (AvFILLp (od) >= 0)
2218 {
2219 SV *cb = sv_2mortal (av_pop (od));
2220
2221 /* coro hv's (and only hv's at the moment) are supported as well */
2222 if (SvSTATEhv_p (aTHX_ cb))
2223 api_ready (aTHX_ cb);
2224 else
2030 { 2225 {
2031 dSP; /* don't disturb outer sp */ 2226 dSP; /* don't disturb outer sp */
2032 SV *cb = av_pop (on_destroy);
2033
2034 PUSHMARK (SP); 2227 PUSHMARK (SP);
2035 2228
2036 if (statusp) 2229 if (coro->status)
2037 { 2230 {
2038 int i; 2231 PUTBACK;
2039 EXTEND (SP, AvFILLp (status) + 1); 2232 coro_push_av (aTHX_ coro->status, G_ARRAY);
2040 2233 SPAGAIN;
2041 for (i = 0; i <= AvFILLp (status); ++i)
2042 PUSHs (AvARRAY (status)[i]);
2043 } 2234 }
2044 2235
2045 PUTBACK; 2236 PUTBACK;
2046 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2237 call_sv (cb, G_VOID | G_DISCARD);
2047 } 2238 }
2048 } 2239 }
2049} 2240}
2050 2241
2051static void 2242static void
2052coro_set_status (HV *coro_hv, SV **arg, int items) 2243coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2053{ 2244{
2054 AV *av = newAV (); 2245 AV *av;
2246
2247 if (coro->status)
2248 {
2249 av = coro->status;
2250 av_clear (av);
2251 }
2252 else
2253 av = coro->status = newAV ();
2055 2254
2056 /* items are actually not so common, so optimise for this case */ 2255 /* items are actually not so common, so optimise for this case */
2057 if (items) 2256 if (items)
2058 { 2257 {
2059 int i; 2258 int i;
… …
2061 av_extend (av, items - 1); 2260 av_extend (av, items - 1);
2062 2261
2063 for (i = 0; i < items; ++i) 2262 for (i = 0; i < items; ++i)
2064 av_push (av, SvREFCNT_inc_NN (arg [i])); 2263 av_push (av, SvREFCNT_inc_NN (arg [i]));
2065 } 2264 }
2066
2067 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2068} 2265}
2069 2266
2070static void 2267static void
2071slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) 2268slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2072{ 2269{
… …
2084static void 2281static void
2085slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2282slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2086{ 2283{
2087 HV *coro_hv = (HV *)SvRV (coro_current); 2284 HV *coro_hv = (HV *)SvRV (coro_current);
2088 2285
2089 coro_set_status (coro_hv, arg, items); 2286 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2090 slf_init_terminate_cancel_common (frame, coro_hv); 2287 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2091} 2288}
2092 2289
2093static void 2290static void
2094slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2291slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2095{ 2292{
… …
2100 croak ("Coro::cancel called without coro object,"); 2297 croak ("Coro::cancel called without coro object,");
2101 2298
2102 coro = SvSTATE (arg [0]); 2299 coro = SvSTATE (arg [0]);
2103 coro_hv = coro->hv; 2300 coro_hv = coro->hv;
2104 2301
2105 coro_set_status (coro_hv, arg + 1, items - 1); 2302 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2106 2303
2107 if (expect_false (coro->flags & CF_NOCANCEL)) 2304 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2108 { 2305 {
2109 /* coro currently busy cancelling something, so just notify it */ 2306 /* coro currently busy cancelling something, so just notify it */
2110 coro->slf_frame.data = (void *)coro; 2307 coro->slf_frame.data = (void *)coro;
2111 2308
2112 frame->prepare = prepare_nop; 2309 frame->prepare = prepare_nop;
2113 frame->check = slf_check_nop; 2310 frame->check = slf_check_nop;
2114 } 2311 }
2115 else if (coro_hv == (HV *)SvRV (coro_current)) 2312 else if (coro_hv == (HV *)SvRV (coro_current))
2116 { 2313 {
2117 /* cancelling the current coro is allowed, and equals terminate */ 2314 /* cancelling the current coro is allowed, and equals terminate */
2118 slf_init_terminate_cancel_common (frame, coro_hv); 2315 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2119 } 2316 }
2120 else 2317 else
2121 { 2318 {
2122 struct coro *self = SvSTATE_current; 2319 struct coro *self = SvSTATE_current;
2320
2321 if (!self)
2322 croak ("Coro::cancel called outside of thread content,");
2123 2323
2124 /* otherwise we cancel directly, purely for speed reasons 2324 /* otherwise we cancel directly, purely for speed reasons
2125 * unfortunately, this requires some magic trickery, as 2325 * unfortunately, this requires some magic trickery, as
2126 * somebody else could cancel us, so we have to fight the cancellation. 2326 * somebody else could cancel us, so we have to fight the cancellation.
2127 * this is ugly, and hopefully fully worth the extra speed. 2327 * this is ugly, and hopefully fully worth the extra speed.
2128 * besides, I can't get the slow-but-safe version working... 2328 * besides, I can't get the slow-but-safe version working...
2129 */ 2329 */
2130 slf_frame.data = 0; 2330 slf_frame.data = 0;
2131 self->flags |= CF_NOCANCEL; 2331 self->flags |= CF_NOCANCEL;
2132
2133 coro_state_destroy (aTHX_ coro); 2332 coro_state_destroy (aTHX_ coro);
2134 coro_call_on_destroy (aTHX_ coro);
2135
2136 self->flags &= ~CF_NOCANCEL; 2333 self->flags &= ~CF_NOCANCEL;
2137 2334
2138 if (slf_frame.data) 2335 if (slf_frame.data)
2139 { 2336 {
2140 /* while we were busy we have been cancelled, so terminate */ 2337 /* while we were busy we have been cancelled, so terminate */
2141 slf_init_terminate_cancel_common (frame, self->hv); 2338 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2142 } 2339 }
2143 else 2340 else
2144 { 2341 {
2145 frame->prepare = prepare_nop; 2342 frame->prepare = prepare_nop;
2146 frame->check = slf_check_nop; 2343 frame->check = slf_check_nop;
2147 } 2344 }
2148 } 2345 }
2149} 2346}
2150 2347
2348static int
2349slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2350{
2351 frame->prepare = 0;
2352 coro_unwind_stacks (aTHX);
2353
2354 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2355
2356 return 1;
2357}
2358
2359static int
2360safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2361{
2362 if (coro->cctx)
2363 croak ("coro inside C callback, unable to cancel at this time, caught");
2364
2365 if (coro->flags & CF_NEW)
2366 {
2367 coro_set_status (aTHX_ coro, arg, items);
2368 coro_state_destroy (aTHX_ coro);
2369 }
2370 else
2371 {
2372 if (!coro->slf_frame.prepare)
2373 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2374
2375 slf_destroy (aTHX_ coro);
2376
2377 coro_set_status (aTHX_ coro, arg, items);
2378 coro->slf_frame.prepare = prepare_nop;
2379 coro->slf_frame.check = slf_check_safe_cancel;
2380
2381 api_ready (aTHX_ (SV *)coro->hv);
2382 }
2383
2384 return 1;
2385}
2386
2151/*****************************************************************************/ 2387/*****************************************************************************/
2152/* async pool handler */ 2388/* async pool handler */
2153 2389
2154static int 2390static int
2155slf_check_pool_handler (pTHX_ struct CoroSLF *frame) 2391slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
… …
2184slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2420slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2185{ 2421{
2186 HV *hv = (HV *)SvRV (coro_current); 2422 HV *hv = (HV *)SvRV (coro_current);
2187 struct coro *coro = SvSTATE_hv ((SV *)hv); 2423 struct coro *coro = SvSTATE_hv ((SV *)hv);
2188 2424
2189 if (expect_true (coro->saved_deffh)) 2425 if (ecb_expect_true (coro->saved_deffh))
2190 { 2426 {
2191 /* subsequent iteration */ 2427 /* subsequent iteration */
2192 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2428 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2193 coro->saved_deffh = 0; 2429 coro->saved_deffh = 0;
2194 2430
2195 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2431 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2196 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2432 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2197 { 2433 {
2198 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2434 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2199 coro->invoke_av = newAV (); 2435 return;
2200
2201 frame->prepare = prepare_nop;
2202 } 2436 }
2203 else 2437 else
2204 { 2438 {
2205 av_clear (GvAV (PL_defgv)); 2439 av_clear (GvAV (PL_defgv));
2206 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2440 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2207 2441
2442 if (ecb_expect_false (coro->swap_sv))
2443 {
2444 SWAP_SVS_LEAVE (coro);
2445 SvREFCNT_dec_NN (coro->swap_sv);
2446 coro->swap_sv = 0;
2447 }
2448
2208 coro->prio = 0; 2449 coro->prio = 0;
2209 2450
2210 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2451 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2211 api_trace (aTHX_ coro_current, 0); 2452 api_trace (aTHX_ coro_current, 0);
2212 2453
2213 frame->prepare = prepare_schedule; 2454 frame->prepare = prepare_schedule;
2214 av_push (av_async_pool, SvREFCNT_inc (hv)); 2455 av_push (av_async_pool, SvREFCNT_inc (hv));
2215 } 2456 }
… …
2256 2497
2257static int 2498static int
2258slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2499slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2259{ 2500{
2260 SV *data = (SV *)frame->data; 2501 SV *data = (SV *)frame->data;
2261 2502
2262 if (CORO_THROW) 2503 if (CORO_THROW)
2263 return 0; 2504 return 0;
2264 2505
2265 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2506 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2266 return 1; 2507 return 1;
… …
2302 cb = sv_2mortal (coro->rouse_cb); 2543 cb = sv_2mortal (coro->rouse_cb);
2303 coro->rouse_cb = 0; 2544 coro->rouse_cb = 0;
2304 } 2545 }
2305 2546
2306 if (!SvROK (cb) 2547 if (!SvROK (cb)
2307 || SvTYPE (SvRV (cb)) != SVt_PVCV 2548 || SvTYPE (SvRV (cb)) != SVt_PVCV
2308 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2549 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2309 croak ("Coro::rouse_wait called with illegal callback argument,"); 2550 croak ("Coro::rouse_wait called with illegal callback argument,");
2310 2551
2311 { 2552 {
2312 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2553 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2429static void 2670static void
2430slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2671slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2431{ 2672{
2432 frame->prepare = prepare_cede_notself; 2673 frame->prepare = prepare_cede_notself;
2433 frame->check = slf_check_nop; 2674 frame->check = slf_check_nop;
2675}
2676
2677/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2678static void
2679slf_destroy (pTHX_ struct coro *coro)
2680{
2681 struct CoroSLF frame = coro->slf_frame;
2682
2683 /*
2684 * The on_destroy below most likely is from an SLF call.
2685 * Since by definition the SLF call will not finish when we destroy
2686 * the coro, we will have to force-finish it here, otherwise
2687 * cleanup functions cannot call SLF functions.
2688 */
2689 coro->slf_frame.prepare = 0;
2690
2691 /* this callback is reserved for slf functions needing to do cleanup */
2692 if (frame.destroy && frame.prepare && !PL_dirty)
2693 frame.destroy (aTHX_ &frame);
2434} 2694}
2435 2695
2436/* 2696/*
2437 * these not obviously related functions are all rolled into one 2697 * these not obviously related functions are all rolled into one
2438 * function to increase chances that they all will call transfer with the same 2698 * function to increase chances that they all will call transfer with the same
… …
2445 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2705 I32 checkmark; /* mark SP to see how many elements check has pushed */
2446 2706
2447 /* set up the slf frame, unless it has already been set-up */ 2707 /* set up the slf frame, unless it has already been set-up */
2448 /* the latter happens when a new coro has been started */ 2708 /* the latter happens when a new coro has been started */
2449 /* or when a new cctx was attached to an existing coroutine */ 2709 /* or when a new cctx was attached to an existing coroutine */
2450 if (expect_true (!slf_frame.prepare)) 2710 if (ecb_expect_true (!slf_frame.prepare))
2451 { 2711 {
2452 /* first iteration */ 2712 /* first iteration */
2453 dSP; 2713 dSP;
2454 SV **arg = PL_stack_base + TOPMARK + 1; 2714 SV **arg = PL_stack_base + TOPMARK + 1;
2455 int items = SP - arg; /* args without function object */ 2715 int items = SP - arg; /* args without function object */
… …
2496 while (slf_frame.check (aTHX_ &slf_frame)); 2756 while (slf_frame.check (aTHX_ &slf_frame));
2497 2757
2498 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2758 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2499 2759
2500 /* exception handling */ 2760 /* exception handling */
2501 if (expect_false (CORO_THROW)) 2761 if (ecb_expect_false (CORO_THROW))
2502 { 2762 {
2503 SV *exception = sv_2mortal (CORO_THROW); 2763 SV *exception = sv_2mortal (CORO_THROW);
2504 2764
2505 CORO_THROW = 0; 2765 CORO_THROW = 0;
2506 sv_setsv (ERRSV, exception); 2766 sv_setsv (ERRSV, exception);
2507 croak (0); 2767 croak (0);
2508 } 2768 }
2509 2769
2510 /* return value handling - mostly like entersub */ 2770 /* return value handling - mostly like entersub */
2511 /* make sure we put something on the stack in scalar context */ 2771 /* make sure we put something on the stack in scalar context */
2512 if (GIMME_V == G_SCALAR) 2772 if (GIMME_V == G_SCALAR
2773 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2513 { 2774 {
2514 dSP; 2775 dSP;
2515 SV **bot = PL_stack_base + checkmark; 2776 SV **bot = PL_stack_base + checkmark;
2516 2777
2517 if (sp == bot) /* too few, push undef */ 2778 if (sp == bot) /* too few, push undef */
2518 bot [1] = &PL_sv_undef; 2779 bot [1] = &PL_sv_undef;
2519 else if (sp != bot + 1) /* too many, take last one */ 2780 else /* too many, take last one */
2520 bot [1] = *sp; 2781 bot [1] = *sp;
2521 2782
2522 SP = bot + 1; 2783 SP = bot + 1;
2523 2784
2524 PUTBACK; 2785 PUTBACK;
… …
2622{ 2883{
2623 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); 2884 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2624 on_enterleave_call (aTHX_ sv_2mortal (cb)); 2885 on_enterleave_call (aTHX_ sv_2mortal (cb));
2625} 2886}
2626 2887
2888static void
2889enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2890{
2891 if (!hook)
2892 return;
2893
2894 if (!*avp)
2895 {
2896 *avp = newAV ();
2897 AvREAL_off (*avp);
2898 }
2899
2900 av_push (*avp, (SV *)hook);
2901 av_push (*avp, (SV *)arg);
2902}
2903
2904static void
2905enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2906{
2907 AV *av = *avp;
2908 int i;
2909
2910 if (!av)
2911 return;
2912
2913 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2914 if (AvARRAY (av)[i] == (SV *)hook)
2915 {
2916 if (execute)
2917 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2918
2919 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2920 av_pop (av);
2921 av_pop (av);
2922 break;
2923 }
2924
2925 if (AvFILLp (av) >= 0)
2926 {
2927 *avp = 0;
2928 SvREFCNT_dec_NN (av);
2929 }
2930}
2931
2932static void
2933api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2934{
2935 struct coro *coro = SvSTATE (coro_sv);
2936
2937 if (SvSTATE_current == coro)
2938 if (enter)
2939 enter (aTHX_ enter_arg);
2940
2941 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2942 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2943}
2944
2945static void
2946api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2947{
2948 struct coro *coro = SvSTATE (coro_sv);
2949
2950 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2951 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2952}
2953
2954static void
2955savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2956{
2957 struct coro *coro = SvSTATE_current;
2958
2959 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2960}
2961
2962static void
2963savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2964{
2965 struct coro *coro = SvSTATE_current;
2966
2967 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2968}
2969
2970static void
2971api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2972{
2973 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2974
2975 /* this ought to be much cheaper than malloc + a single destructor call */
2976 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2977 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2978}
2979
2627/*****************************************************************************/ 2980/*****************************************************************************/
2628/* PerlIO::cede */ 2981/* PerlIO::cede */
2629 2982
2630typedef struct 2983typedef struct
2631{ 2984{
2632 PerlIOBuf base; 2985 PerlIOBuf base;
2633 NV next, every; 2986 NV next, every;
2634} PerlIOCede; 2987} PerlIOCede;
2635 2988
2636static IV 2989static IV ecb_cold
2637PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2990PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2638{ 2991{
2639 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2992 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2640 2993
2641 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2994 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2642 self->next = nvtime () + self->every; 2995 self->next = nvtime () + self->every;
2643 2996
2644 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2997 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2645} 2998}
2646 2999
2647static SV * 3000static SV * ecb_cold
2648PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3001PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2649{ 3002{
2650 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2651 3004
2652 return newSVnv (self->every); 3005 return newSVnv (self->every);
… …
2759 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3112 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2760 PUTBACK; 3113 PUTBACK;
2761 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3114 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2762 } 3115 }
2763 3116
2764 SvREFCNT_dec (cb); 3117 SvREFCNT_dec_NN (cb);
2765 } 3118 }
2766} 3119}
2767 3120
2768static void 3121static void
2769coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3122coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2770{ 3123{
2771 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3124 /* call $sem->adjust (0) to possibly wake up some other waiters */
2772 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3125 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2773} 3126}
2774 3127
2775static int 3128static int
2776slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3129slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2777{ 3130{
2778 AV *av = (AV *)frame->data; 3131 AV *av = (AV *)frame->data;
2779 SV *count_sv = AvARRAY (av)[0]; 3132 SV *count_sv = AvARRAY (av)[0];
3133 SV *coro_hv = SvRV (coro_current);
3134
3135 frame->destroy = 0;
2780 3136
2781 /* if we are about to throw, don't actually acquire the lock, just throw */ 3137 /* if we are about to throw, don't actually acquire the lock, just throw */
2782 if (CORO_THROW) 3138 if (ecb_expect_false (CORO_THROW))
3139 {
3140 /* we still might be responsible for the semaphore, so wake up others */
3141 coro_semaphore_adjust (aTHX_ av, 0);
3142
2783 return 0; 3143 return 0;
3144 }
2784 else if (SvIVX (count_sv) > 0) 3145 else if (SvIVX (count_sv) > 0)
2785 { 3146 {
2786 SvSTATE_current->on_destroy = 0;
2787
2788 if (acquire) 3147 if (acquire)
2789 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3148 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2790 else 3149 else
2791 coro_semaphore_adjust (aTHX_ av, 0); 3150 coro_semaphore_adjust (aTHX_ av, 0);
2792 3151
… …
2796 { 3155 {
2797 int i; 3156 int i;
2798 /* if we were woken up but can't down, we look through the whole */ 3157 /* if we were woken up but can't down, we look through the whole */
2799 /* waiters list and only add us if we aren't in there already */ 3158 /* waiters list and only add us if we aren't in there already */
2800 /* this avoids some degenerate memory usage cases */ 3159 /* this avoids some degenerate memory usage cases */
2801 3160 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2802 for (i = 1; i <= AvFILLp (av); ++i)
2803 if (AvARRAY (av)[i] == SvRV (coro_current)) 3161 if (AvARRAY (av)[i] == coro_hv)
2804 return 1; 3162 return 1;
2805 3163
2806 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3164 av_push (av, SvREFCNT_inc (coro_hv));
2807 return 1; 3165 return 1;
2808 } 3166 }
2809} 3167}
2810 3168
2811static int 3169static int
… …
2834 { 3192 {
2835 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3193 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2836 3194
2837 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3195 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2838 frame->prepare = prepare_schedule; 3196 frame->prepare = prepare_schedule;
2839
2840 /* to avoid race conditions when a woken-up coro gets terminated */ 3197 /* to avoid race conditions when a woken-up coro gets terminated */
2841 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3198 /* we arrange for a temporary on_destroy that calls adjust (0) */
2842 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3199 frame->destroy = coro_semaphore_destroy;
2843 } 3200 }
2844} 3201}
2845 3202
2846static void 3203static void
2847slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3204slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2905 { 3262 {
2906 api_ready (aTHX_ cb); 3263 api_ready (aTHX_ cb);
2907 sv_setiv (cb, 0); /* signal waiter */ 3264 sv_setiv (cb, 0); /* signal waiter */
2908 } 3265 }
2909 3266
2910 SvREFCNT_dec (cb); 3267 SvREFCNT_dec_NN (cb);
2911 3268
2912 --count; 3269 --count;
2913 } 3270 }
2914} 3271}
2915 3272
… …
3000 } 3357 }
3001 3358
3002 av_push (state, data_sv); 3359 av_push (state, data_sv);
3003 3360
3004 api_ready (aTHX_ coro); 3361 api_ready (aTHX_ coro);
3005 SvREFCNT_dec (coro); 3362 SvREFCNT_dec_NN (coro);
3006 SvREFCNT_dec ((AV *)state); 3363 SvREFCNT_dec_NN ((AV *)state);
3007} 3364}
3008 3365
3009static int 3366static int
3010slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3367slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3011{ 3368{
… …
3016 /* it quickly returns */ 3373 /* it quickly returns */
3017 if (CORO_THROW) 3374 if (CORO_THROW)
3018 return 0; 3375 return 0;
3019 3376
3020 /* one element that is an RV? repeat! */ 3377 /* one element that is an RV? repeat! */
3021 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3378 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3022 return 1; 3379 return 1;
3023 3380
3024 /* restore status */ 3381 /* restore status */
3025 { 3382 {
3026 SV *data_sv = av_pop (state); 3383 SV *data_sv = av_pop (state);
… …
3029 errno = data->errorno; 3386 errno = data->errorno;
3030 PL_laststype = data->laststype; 3387 PL_laststype = data->laststype;
3031 PL_laststatval = data->laststatval; 3388 PL_laststatval = data->laststatval;
3032 PL_statcache = data->statcache; 3389 PL_statcache = data->statcache;
3033 3390
3034 SvREFCNT_dec (data_sv); 3391 SvREFCNT_dec_NN (data_sv);
3035 } 3392 }
3036 3393
3037 /* push result values */ 3394 /* push result values */
3038 { 3395 {
3039 dSP; 3396 dSP;
… …
3065 dSP; 3422 dSP;
3066 3423
3067 static SV *prio_cv; 3424 static SV *prio_cv;
3068 static SV *prio_sv; 3425 static SV *prio_sv;
3069 3426
3070 if (expect_false (!prio_cv)) 3427 if (ecb_expect_false (!prio_cv))
3071 { 3428 {
3072 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3429 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3073 prio_sv = newSViv (0); 3430 prio_sv = newSViv (0);
3074 } 3431 }
3075 3432
… …
3181 } 3538 }
3182 3539
3183 return coro_sv; 3540 return coro_sv;
3184} 3541}
3185 3542
3543#ifndef __cplusplus
3544ecb_cold XS(boot_Coro__State);
3545#endif
3546
3547#if CORO_JIT
3548
3549static void ecb_noinline ecb_cold
3550pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3551{
3552 dSP;
3553 AV *av = newAV ();
3554
3555 av_store (av, 3, newSVuv (d));
3556 av_store (av, 2, newSVuv (c));
3557 av_store (av, 1, newSVuv (b));
3558 av_store (av, 0, newSVuv (a));
3559
3560 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3561
3562 PUTBACK;
3563}
3564
3565static void ecb_noinline ecb_cold
3566jit_init (pTHX)
3567{
3568 dSP;
3569 SV *load, *save;
3570 char *map_base;
3571 char *load_ptr, *save_ptr;
3572 STRLEN load_len, save_len, map_len;
3573 int count;
3574
3575 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3576
3577 PUSHMARK (SP);
3578 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3579 #include "state.h"
3580 count = call_pv ("Coro::State::_jit", G_ARRAY);
3581 SPAGAIN;
3582
3583 save = POPs; save_ptr = SvPVbyte (save, save_len);
3584 load = POPs; load_ptr = SvPVbyte (load, load_len);
3585
3586 map_len = load_len + save_len + 16;
3587
3588 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3589
3590 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3591
3592 load_perl_slots = (load_save_perl_slots_type)map_base;
3593 memcpy (map_base, load_ptr, load_len);
3594
3595 map_base += (load_len + 15) & ~15;
3596
3597 save_perl_slots = (load_save_perl_slots_type)map_base;
3598 memcpy (map_base, save_ptr, save_len);
3599
3600 /* we are good citizens and try to make the page read-only, so the evil evil */
3601 /* hackers might have it a bit more difficult */
3602 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3603
3604 PUTBACK;
3605 eval_pv ("undef &Coro::State::_jit", 1);
3606}
3607
3608#endif
3609
3186MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3610MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
3187 3611
3188PROTOTYPES: DISABLE 3612PROTOTYPES: DISABLE
3189 3613
3190BOOT: 3614BOOT:
3191{ 3615{
3616#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3617#include "state.h"
3192#ifdef USE_ITHREADS 3618#ifdef USE_ITHREADS
3193# if CORO_PTHREAD 3619# if CORO_PTHREAD
3194 coro_thx = PERL_GET_CONTEXT; 3620 coro_thx = PERL_GET_CONTEXT;
3195# endif 3621# endif
3196#endif 3622#endif
3197 BOOT_PAGESIZE; 3623 /* perl defines these to check for existance first, but why it doesn't */
3624 /* just create them one at init time is not clear to me, except for */
3625 /* programs trying to delete them, but... */
3626 /* anyway, we declare this as invalid and make sure they are initialised here */
3627 DEFSV;
3628 ERRSV;
3198 3629
3199 cctx_current = cctx_new_empty (); 3630 cctx_current = cctx_new_empty ();
3200 3631
3201 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3632 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3202 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3633 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3203 3634
3204 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3635 {
3205 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3636 /*
3206 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3637 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3638 * by coro_sig_vtbl in hash values.
3639 */
3640 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3641
3642 /* this only works if perl doesn't have a vtbl for %SIG */
3643 assert (!mg->mg_virtual);
3644
3645 /*
3646 * The irony is that the perl API itself asserts that mg_virtual
3647 * must be non-const, yet perl5porters insisted on marking their
3648 * vtbls as read-only, just to thwart perl modules from patching
3649 * them.
3650 */
3651 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3652 mg->mg_flags |= MGf_COPY;
3653
3654 coro_sigelem_vtbl = PL_vtbl_sigelem;
3655 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3656 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3657 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3658 }
3207 3659
3208 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3209 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3660 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3210 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3661 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3211 3662
3212 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3663 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3213 3664
… …
3245 coroapi.prepare_cede_notself = prepare_cede_notself; 3696 coroapi.prepare_cede_notself = prepare_cede_notself;
3246 3697
3247 time_init (aTHX); 3698 time_init (aTHX);
3248 3699
3249 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3700 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3701#if CORO_JIT
3702 PUTBACK;
3703 jit_init (aTHX);
3704 SPAGAIN;
3705#endif
3250} 3706}
3251 3707
3252SV * 3708SV *
3253new (SV *klass, ...) 3709new (SV *klass, ...)
3254 ALIAS: 3710 ALIAS:
… …
3261void 3717void
3262transfer (...) 3718transfer (...)
3263 PROTOTYPE: $$ 3719 PROTOTYPE: $$
3264 CODE: 3720 CODE:
3265 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3721 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3266
3267void
3268_exit (int code)
3269 PROTOTYPE: $
3270 CODE:
3271 _exit (code);
3272 3722
3273SV * 3723SV *
3274clone (Coro::State coro) 3724clone (Coro::State coro)
3275 CODE: 3725 CODE:
3276{ 3726{
… …
3331void 3781void
3332list () 3782list ()
3333 PROTOTYPE: 3783 PROTOTYPE:
3334 PPCODE: 3784 PPCODE:
3335{ 3785{
3336 struct coro *coro; 3786 struct coro *coro;
3337 for (coro = coro_first; coro; coro = coro->next) 3787 for (coro = coro_first; coro; coro = coro->next)
3338 if (coro->hv) 3788 if (coro->hv)
3339 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3789 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3340} 3790}
3341 3791
… …
3396 PROTOTYPE: $ 3846 PROTOTYPE: $
3397 ALIAS: 3847 ALIAS:
3398 is_ready = CF_READY 3848 is_ready = CF_READY
3399 is_running = CF_RUNNING 3849 is_running = CF_RUNNING
3400 is_new = CF_NEW 3850 is_new = CF_NEW
3401 is_destroyed = CF_DESTROYED 3851 is_destroyed = CF_ZOMBIE
3852 is_zombie = CF_ZOMBIE
3402 is_suspended = CF_SUSPENDED 3853 is_suspended = CF_SUSPENDED
3403 CODE: 3854 CODE:
3404 RETVAL = boolSV (coro->flags & ix); 3855 RETVAL = boolSV (coro->flags & ix);
3405 OUTPUT: 3856 OUTPUT:
3406 RETVAL 3857 RETVAL
3407 3858
3408void 3859void
3409throw (Coro::State self, SV *exception = &PL_sv_undef) 3860throw (SV *self, SV *exception = &PL_sv_undef)
3410 PROTOTYPE: $;$ 3861 PROTOTYPE: $;$
3411 CODE: 3862 CODE:
3412{ 3863{
3864 struct coro *coro = SvSTATE (self);
3413 struct coro *current = SvSTATE_current; 3865 struct coro *current = SvSTATE_current;
3414 SV **exceptionp = self == current ? &CORO_THROW : &self->except; 3866 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3415 SvREFCNT_dec (*exceptionp); 3867 SvREFCNT_dec (*exceptionp);
3416 SvGETMAGIC (exception); 3868 SvGETMAGIC (exception);
3417 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0; 3869 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3870
3871 api_ready (aTHX_ self);
3418} 3872}
3419 3873
3420void 3874void
3421api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3875api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3422 PROTOTYPE: $;$ 3876 PROTOTYPE: $;$
… …
3499 3953
3500void 3954void
3501times (Coro::State self) 3955times (Coro::State self)
3502 PPCODE: 3956 PPCODE:
3503{ 3957{
3504 struct coro *current = SvSTATE (coro_current); 3958 struct coro *current = SvSTATE (coro_current);
3505 3959
3506 if (expect_false (current == self)) 3960 if (ecb_expect_false (current == self))
3507 { 3961 {
3508 coro_times_update (); 3962 coro_times_update ();
3509 coro_times_add (SvSTATE (coro_current)); 3963 coro_times_add (SvSTATE (coro_current));
3510 } 3964 }
3511 3965
3512 EXTEND (SP, 2); 3966 EXTEND (SP, 2);
3513 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3967 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3514 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3968 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3515 3969
3516 if (expect_false (current == self)) 3970 if (ecb_expect_false (current == self))
3517 coro_times_sub (SvSTATE (coro_current)); 3971 coro_times_sub (SvSTATE (coro_current));
3518} 3972}
3519 3973
3520void 3974void
3521swap_sv (Coro::State coro, SV *sv, SV *swapsv) 3975swap_sv (Coro::State coro, SV *sva, SV *svb)
3522 CODE: 3976 CODE:
3523{ 3977{
3524 struct coro *current = SvSTATE_current; 3978 struct coro *current = SvSTATE_current;
3979 AV *swap_sv;
3980 int i;
3981
3982 sva = SvRV (sva);
3983 svb = SvRV (svb);
3525 3984
3526 if (current == coro) 3985 if (current == coro)
3527 SWAP_SVS (current); 3986 SWAP_SVS_LEAVE (current);
3528 3987
3529 if (!coro->swap_sv) 3988 if (!coro->swap_sv)
3530 coro->swap_sv = newAV (); 3989 coro->swap_sv = newAV ();
3531 3990
3991 swap_sv = coro->swap_sv;
3992
3993 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3994 {
3995 SV *a = AvARRAY (swap_sv)[i ];
3996 SV *b = AvARRAY (swap_sv)[i + 1];
3997
3998 if (a == sva && b == svb)
3999 {
4000 SvREFCNT_dec_NN (a);
4001 SvREFCNT_dec_NN (b);
4002
4003 for (; i <= AvFILLp (swap_sv) - 2; i++)
4004 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4005
4006 AvFILLp (swap_sv) -= 2;
4007
4008 goto removed;
4009 }
4010 }
4011
3532 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); 4012 av_push (swap_sv, SvREFCNT_inc_NN (sva));
3533 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); 4013 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4014
4015 removed:
3534 4016
3535 if (current == coro) 4017 if (current == coro)
3536 SWAP_SVS (current); 4018 SWAP_SVS_ENTER (current);
3537} 4019}
3538 4020
3539 4021
3540MODULE = Coro::State PACKAGE = Coro 4022MODULE = Coro::State PACKAGE = Coro
3541 4023
3542BOOT: 4024BOOT:
3543{ 4025{
4026 if (SVt_LAST > 32)
4027 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
4028
3544 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4029 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3545 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4030 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3546 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 4031 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3547 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3548 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4032 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3549 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3550 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4034 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3551 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4035 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3552 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4036 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3553 4037
3554 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4038 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3555 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4039 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3556 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4040 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3557 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ 4041 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3558 4042
3559 coro_stash = gv_stashpv ("Coro", TRUE); 4043 coro_stash = gv_stashpv ("Coro", TRUE);
3560 4044
3561 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 4045 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3562 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 4046 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3563 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); 4047 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
… …
3575 coroapi.ready = api_ready; 4059 coroapi.ready = api_ready;
3576 coroapi.is_ready = api_is_ready; 4060 coroapi.is_ready = api_is_ready;
3577 coroapi.nready = coro_nready; 4061 coroapi.nready = coro_nready;
3578 coroapi.current = coro_current; 4062 coroapi.current = coro_current;
3579 4063
4064 coroapi.enterleave_hook = api_enterleave_hook;
4065 coroapi.enterleave_unhook = api_enterleave_unhook;
4066 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4067
3580 /*GCoroAPI = &coroapi;*/ 4068 /*GCoroAPI = &coroapi;*/
3581 sv_setiv (sv, (IV)&coroapi); 4069 sv_setiv (sv, (IV)&coroapi);
3582 SvREADONLY_on (sv); 4070 SvREADONLY_on (sv);
3583 } 4071 }
3584} 4072}
… …
3595void 4083void
3596_destroy (Coro::State coro) 4084_destroy (Coro::State coro)
3597 CODE: 4085 CODE:
3598 /* used by the manager thread */ 4086 /* used by the manager thread */
3599 coro_state_destroy (aTHX_ coro); 4087 coro_state_destroy (aTHX_ coro);
4088
4089void
4090on_destroy (Coro::State coro, SV *cb)
4091 CODE:
3600 coro_call_on_destroy (aTHX_ coro); 4092 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4093
4094void
4095join (...)
4096 CODE:
4097 CORO_EXECUTE_SLF_XS (slf_init_join);
3601 4098
3602void 4099void
3603terminate (...) 4100terminate (...)
3604 CODE: 4101 CODE:
3605 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4102 CORO_EXECUTE_SLF_XS (slf_init_terminate);
… …
3607void 4104void
3608cancel (...) 4105cancel (...)
3609 CODE: 4106 CODE:
3610 CORO_EXECUTE_SLF_XS (slf_init_cancel); 4107 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3611 4108
4109int
4110safe_cancel (Coro::State self, ...)
4111 C_ARGS: aTHX_ self, &ST (1), items - 1
4112
3612void 4113void
3613schedule (...) 4114schedule (...)
3614 CODE: 4115 CODE:
3615 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4116 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3616 4117
… …
3636 4137
3637void 4138void
3638_set_current (SV *current) 4139_set_current (SV *current)
3639 PROTOTYPE: $ 4140 PROTOTYPE: $
3640 CODE: 4141 CODE:
3641 SvREFCNT_dec (SvRV (coro_current)); 4142 SvREFCNT_dec_NN (SvRV (coro_current));
3642 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4143 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3643 4144
3644void 4145void
3645_set_readyhook (SV *hook) 4146_set_readyhook (SV *hook)
3646 PROTOTYPE: $ 4147 PROTOTYPE: $
… …
3730 4231
3731 if ((SV *)hv == &PL_sv_undef) 4232 if ((SV *)hv == &PL_sv_undef)
3732 { 4233 {
3733 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); 4234 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3734 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); 4235 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3735 SvREFCNT_dec (sv); 4236 SvREFCNT_dec_NN (sv);
3736 } 4237 }
3737 4238
3738 { 4239 {
3739 struct coro *coro = SvSTATE_hv (hv); 4240 struct coro *coro = SvSTATE_hv (hv);
3740 4241
… …
3747 api_ready (aTHX_ (SV *)hv); 4248 api_ready (aTHX_ (SV *)hv);
3748 4249
3749 if (GIMME_V != G_VOID) 4250 if (GIMME_V != G_VOID)
3750 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4251 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3751 else 4252 else
3752 SvREFCNT_dec (hv); 4253 SvREFCNT_dec_NN (hv);
3753} 4254}
3754 4255
3755SV * 4256SV *
3756rouse_cb () 4257rouse_cb ()
3757 PROTOTYPE: 4258 PROTOTYPE:
… …
3772 on_leave = 1 4273 on_leave = 1
3773 PROTOTYPE: & 4274 PROTOTYPE: &
3774 CODE: 4275 CODE:
3775{ 4276{
3776 struct coro *coro = SvSTATE_current; 4277 struct coro *coro = SvSTATE_current;
3777 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4278 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3778 4279
3779 block = s_get_cv_croak (block); 4280 block = s_get_cv_croak (block);
3780 4281
3781 if (!*avp) 4282 if (!*avp)
3782 *avp = newAV (); 4283 *avp = newAV ();
… …
3802 4303
3803SV * 4304SV *
3804new (SV *klass, SV *count = 0) 4305new (SV *klass, SV *count = 0)
3805 CODE: 4306 CODE:
3806{ 4307{
3807 int semcnt = 1; 4308 int semcnt = 1;
3808 4309
3809 if (count) 4310 if (count)
3810 { 4311 {
3811 SvGETMAGIC (count); 4312 SvGETMAGIC (count);
3812 4313
… …
3836 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4337 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3837 OUTPUT: 4338 OUTPUT:
3838 RETVAL 4339 RETVAL
3839 4340
3840void 4341void
3841up (SV *self, int adjust = 1) 4342up (SV *self)
3842 ALIAS:
3843 adjust = 1
3844 CODE: 4343 CODE:
4344 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4345
4346void
4347adjust (SV *self, int adjust)
4348 CODE:
3845 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4349 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3846 4350
3847void 4351void
3848down (...) 4352down (...)
3849 CODE: 4353 CODE:
3850 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4354 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3872 XSRETURN_NO; 4376 XSRETURN_NO;
3873} 4377}
3874 4378
3875void 4379void
3876waiters (SV *self) 4380waiters (SV *self)
3877 PPCODE: 4381 PPCODE:
3878{ 4382{
3879 AV *av = (AV *)SvRV (self); 4383 AV *av = (AV *)SvRV (self);
3880 int wcount = AvFILLp (av) + 1 - 1; 4384 int wcount = AvFILLp (av) + 1 - 1;
3881 4385
3882 if (GIMME_V == G_SCALAR) 4386 if (GIMME_V == G_SCALAR)
… …
3891} 4395}
3892 4396
3893MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4397MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3894 4398
3895void 4399void
3896_may_delete (SV *sem, int count, int extra_refs) 4400_may_delete (SV *sem, int count, unsigned int extra_refs)
3897 PPCODE: 4401 PPCODE:
3898{ 4402{
3899 AV *av = (AV *)SvRV (sem); 4403 AV *av = (AV *)SvRV (sem);
3900 4404
3901 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4405 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3902 && AvFILLp (av) == 0 /* no waiters, just count */ 4406 && AvFILLp (av) == 0 /* no waiters, just count */
3903 && SvIV (AvARRAY (av)[0]) == count) 4407 && SvIV (AvARRAY (av)[0]) == count)
3904 XSRETURN_YES; 4408 XSRETURN_YES;
… …
3925 4429
3926void 4430void
3927broadcast (SV *self) 4431broadcast (SV *self)
3928 CODE: 4432 CODE:
3929{ 4433{
3930 AV *av = (AV *)SvRV (self); 4434 AV *av = (AV *)SvRV (self);
3931 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4435 coro_signal_wake (aTHX_ av, AvFILLp (av));
3932} 4436}
3933 4437
3934void 4438void
3935send (SV *self) 4439send (SV *self)
… …
3943 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4447 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3944} 4448}
3945 4449
3946IV 4450IV
3947awaited (SV *self) 4451awaited (SV *self)
3948 CODE: 4452 CODE:
3949 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4453 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3950 OUTPUT: 4454 OUTPUT:
3951 RETVAL 4455 RETVAL
3952 4456
3953 4457
… …
3958 4462
3959void 4463void
3960_schedule (...) 4464_schedule (...)
3961 CODE: 4465 CODE:
3962{ 4466{
3963 static int incede; 4467 static int incede;
3964 4468
3965 api_cede_notself (aTHX); 4469 api_cede_notself (aTHX);
3966 4470
3967 ++incede; 4471 ++incede;
3968 while (coro_nready >= incede && api_cede (aTHX)) 4472 while (coro_nready >= incede && api_cede (aTHX))
… …
4012 { 4516 {
4013 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; 4517 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4014 coro_old_pp_sselect = 0; 4518 coro_old_pp_sselect = 0;
4015 } 4519 }
4016 4520
4521MODULE = Coro::State PACKAGE = Coro::Util
4522
4523void
4524_exit (int code)
4525 CODE:
4526 _exit (code);
4527
4528NV
4529time ()
4530 CODE:
4531 RETVAL = nvtime (aTHX);
4532 OUTPUT:
4533 RETVAL
4534
4535NV
4536gettimeofday ()
4537 PPCODE:
4538{
4539 UV tv [2];
4540 u2time (aTHX_ tv);
4541 EXTEND (SP, 2);
4542 PUSHs (sv_2mortal (newSVuv (tv [0])));
4543 PUSHs (sv_2mortal (newSVuv (tv [1])));
4544}
4545

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