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Comparing Coro/Coro/State.xs (file contents):
Revision 1.396 by root, Fri May 6 18:01:13 2011 UTC vs.
Revision 1.471 by root, Fri Jul 14 23:20:07 2017 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/* one off bugfix for perl 5.22 */
122#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
123# undef PadlistNAMES
124# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
125#endif
126
127#if PERL_VERSION_ATLEAST(5,24,0)
128# define SUB_ARGARRAY PL_curpad[0]
129#else
130# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
131#endif
132
133/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
134#if 0
135# undef NDEBUG
136# include <assert.h>
137#endif
138
125static double (*nvtime)(); /* so why doesn't it take void? */ 139static double (*nvtime)(); /* so why doesn't it take void? */
126static void (*u2time)(pTHX_ UV ret[2]); 140static void (*u2time)(pTHX_ UV ret[2]);
127 141
128/* we hijack an hopefully unused CV flag for our purposes */ 142/* we hijack an hopefully unused CV flag for our purposes */
129#define CVf_SLF 0x4000 143#define CVf_SLF 0x4000
130static OP *pp_slf (pTHX); 144static OP *pp_slf (pTHX);
145static void slf_destroy (pTHX_ struct coro *coro);
131 146
132static U32 cctx_gen; 147static U32 cctx_gen;
133static size_t cctx_stacksize = CORO_STACKSIZE; 148static size_t cctx_stacksize = CORO_STACKSIZE;
134static struct CoroAPI coroapi; 149static struct CoroAPI coroapi;
135static AV *main_mainstack; /* used to differentiate between $main and others */ 150static AV *main_mainstack; /* used to differentiate between $main and others */
… …
143 158
144static GV *irsgv; /* $/ */ 159static GV *irsgv; /* $/ */
145static GV *stdoutgv; /* *STDOUT */ 160static GV *stdoutgv; /* *STDOUT */
146static SV *rv_diehook; 161static SV *rv_diehook;
147static SV *rv_warnhook; 162static SV *rv_warnhook;
148static HV *hv_sig; /* %SIG */
149 163
150/* async_pool helper stuff */ 164/* async_pool helper stuff */
151static SV *sv_pool_rss; 165static SV *sv_pool_rss;
152static SV *sv_pool_size; 166static SV *sv_pool_size;
153static SV *sv_async_pool_idle; /* description string */ 167static SV *sv_async_pool_idle; /* description string */
… …
165static char times_valid; 179static char times_valid;
166 180
167static struct coro_cctx *cctx_first; 181static struct coro_cctx *cctx_first;
168static int cctx_count, cctx_idle; 182static int cctx_count, cctx_idle;
169 183
170enum { 184enum
185{
171 CC_MAPPED = 0x01, 186 CC_MAPPED = 0x01,
172 CC_NOREUSE = 0x02, /* throw this away after tracing */ 187 CC_NOREUSE = 0x02, /* throw this away after tracing */
173 CC_TRACE = 0x04, 188 CC_TRACE = 0x04,
174 CC_TRACE_SUB = 0x08, /* trace sub calls */ 189 CC_TRACE_SUB = 0x08, /* trace sub calls */
175 CC_TRACE_LINE = 0x10, /* trace each statement */ 190 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
180typedef struct coro_cctx 195typedef struct coro_cctx
181{ 196{
182 struct coro_cctx *next; 197 struct coro_cctx *next;
183 198
184 /* the stack */ 199 /* the stack */
185 void *sptr; 200 struct coro_stack stack;
186 size_t ssize;
187 201
188 /* cpu state */ 202 /* cpu state */
189 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 203 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
204#ifndef NDEBUG
190 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 205 JMPENV *idle_te; /* same as idle_sp, but for top_env */
206#endif
191 JMPENV *top_env; 207 JMPENV *top_env;
192 coro_context cctx; 208 coro_context cctx;
193 209
194 U32 gen; 210 U32 gen;
195#if CORO_USE_VALGRIND 211#if CORO_USE_VALGRIND
… …
200 216
201static coro_cctx *cctx_current; /* the currently running cctx */ 217static coro_cctx *cctx_current; /* the currently running cctx */
202 218
203/*****************************************************************************/ 219/*****************************************************************************/
204 220
221static MGVTBL coro_state_vtbl;
222
205enum { 223enum
224{
206 CF_RUNNING = 0x0001, /* coroutine is running */ 225 CF_RUNNING = 0x0001, /* coroutine is running */
207 CF_READY = 0x0002, /* coroutine is ready */ 226 CF_READY = 0x0002, /* coroutine is ready */
208 CF_NEW = 0x0004, /* has never been switched to */ 227 CF_NEW = 0x0004, /* has never been switched to */
209 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 228 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
210 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 229 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
211 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ 230 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
212}; 231};
213 232
214/* the structure where most of the perl state is stored, overlaid on the cxstack */ 233/* the structure where most of the perl state is stored, overlaid on the cxstack */
215typedef struct 234typedef struct
216{ 235{
217 SV *defsv;
218 AV *defav;
219 SV *errsv;
220 SV *irsgv;
221 HV *hinthv;
222#define VAR(name,type) type name; 236 #define VARx(name,expr,type) type name;
223# include "state.h" 237 #include "state.h"
224#undef VAR
225} perl_slots; 238} perl_slots;
226 239
240/* 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)) 241#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
228 242
229/* this is a structure representing a perl-level coroutine */ 243/* this is a structure representing a perl-level coroutine */
230struct coro { 244struct coro
245{
231 /* the C coroutine allocated to this perl coroutine, if any */ 246 /* the C coroutine allocated to this perl coroutine, if any */
232 coro_cctx *cctx; 247 coro_cctx *cctx;
233 248
234 /* ready queue */ 249 /* ready queue */
235 struct coro *next_ready; 250 struct coro *next_ready;
… …
237 /* state data */ 252 /* state data */
238 struct CoroSLF slf_frame; /* saved slf frame */ 253 struct CoroSLF slf_frame; /* saved slf frame */
239 AV *mainstack; 254 AV *mainstack;
240 perl_slots *slot; /* basically the saved sp */ 255 perl_slots *slot; /* basically the saved sp */
241 256
242 CV *startcv; /* the CV to execute */ 257 CV *startcv; /* the CV to execute */
243 AV *args; /* data associated with this coroutine (initial args) */ 258 AV *args; /* data associated with this coroutine (initial args) */
244 int refcnt; /* coroutines are refcounted, yes */
245 int flags; /* CF_ flags */ 259 int flags; /* CF_ flags */
246 HV *hv; /* the perl hash associated with this coro, if any */ 260 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 */
248 261
249 /* statistics */ 262 /* statistics */
250 int usecount; /* number of transfers to this coro */ 263 int usecount; /* number of transfers to this coro */
251 264
252 /* coro process data */ 265 /* coro process data */
253 int prio; 266 int prio;
254 SV *except; /* exception to be thrown */ 267 SV *except; /* exception to be thrown */
255 SV *rouse_cb; 268 SV *rouse_cb; /* last rouse callback */
269 AV *on_destroy; /* callbacks or coros to notify on destroy */
270 AV *status; /* the exit status list */
256 271
257 /* async_pool */ 272 /* async_pool */
258 SV *saved_deffh; 273 SV *saved_deffh;
259 SV *invoke_cb; 274 SV *invoke_cb;
260 AV *invoke_av; 275 AV *invoke_av;
261 276
262 /* on_enter/on_leave */ 277 /* on_enter/on_leave */
263 AV *on_enter; 278 AV *on_enter; AV *on_enter_xs;
264 AV *on_leave; 279 AV *on_leave; AV *on_leave_xs;
265 280
266 /* swap_sv */ 281 /* swap_sv */
267 AV *swap_sv; 282 AV *swap_sv;
268 283
269 /* times */ 284 /* times */
… …
292 307
293/* for Coro.pm */ 308/* for Coro.pm */
294static SV *coro_current; 309static SV *coro_current;
295static SV *coro_readyhook; 310static SV *coro_readyhook;
296static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 311static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
297static CV *cv_coro_run, *cv_coro_terminate; 312static CV *cv_coro_run;
298static struct coro *coro_first; 313static struct coro *coro_first;
299#define coro_nready coroapi.nready 314#define coro_nready coroapi.nready
315
316/** JIT *********************************************************************/
317
318#if CORO_JIT
319 /* APPLE doesn't have mmap though */
320 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
321 #ifndef CORO_JIT_TYPE
322 #if ECB_AMD64 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "amd64-unix"
324 #elif __i386 && CORO_JIT_UNIXY
325 #define CORO_JIT_TYPE "x86-unix"
326 #endif
327 #endif
328#endif
329
330#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
331 #undef CORO_JIT
332#endif
333
334#if CORO_JIT
335 typedef void (*load_save_perl_slots_type)(perl_slots *);
336 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
337#endif
300 338
301/** Coro::Select ************************************************************/ 339/** Coro::Select ************************************************************/
302 340
303static OP *(*coro_old_pp_sselect) (pTHX); 341static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select; 342static SV *coro_select_select;
… …
320 358
321/** time stuff **************************************************************/ 359/** time stuff **************************************************************/
322 360
323#ifdef HAS_GETTIMEOFDAY 361#ifdef HAS_GETTIMEOFDAY
324 362
325static void 363ecb_inline void
326coro_u2time (pTHX_ UV ret[2]) 364coro_u2time (pTHX_ UV ret[2])
327{ 365{
328 struct timeval tv; 366 struct timeval tv;
329 gettimeofday (&tv, 0); 367 gettimeofday (&tv, 0);
330 368
331 ret [0] = tv.tv_sec; 369 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec; 370 ret [1] = tv.tv_usec;
333} 371}
334 372
335static double 373ecb_inline double
336coro_nvtime () 374coro_nvtime (void)
337{ 375{
338 struct timeval tv; 376 struct timeval tv;
339 gettimeofday (&tv, 0); 377 gettimeofday (&tv, 0);
340 378
341 return tv.tv_sec + tv.tv_usec * 1e-6; 379 return tv.tv_sec + tv.tv_usec * 1e-6;
342} 380}
343 381
344static void 382ecb_inline void
345time_init (pTHX) 383time_init (pTHX)
346{ 384{
347 nvtime = coro_nvtime; 385 nvtime = coro_nvtime;
348 u2time = coro_u2time; 386 u2time = coro_u2time;
349} 387}
350 388
351#else 389#else
352 390
353static void 391ecb_inline void
354time_init (pTHX) 392time_init (pTHX)
355{ 393{
356 SV **svp; 394 SV **svp;
357 395
358 require_pv ("Time/HiRes.pm"); 396 require_pv ("Time/HiRes.pm");
359 397
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 398 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361 399
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught"); 400 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); 401 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364 402
… …
370 408
371#endif 409#endif
372 410
373/** lowlevel stuff **********************************************************/ 411/** lowlevel stuff **********************************************************/
374 412
375static SV * 413static SV * ecb_noinline
376coro_get_sv (pTHX_ const char *name, int create) 414coro_get_sv (pTHX_ const char *name, int create)
377{ 415{
378#if PERL_VERSION_ATLEAST (5,10,0) 416#if PERL_VERSION_ATLEAST (5,10,0)
379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 417 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
380 get_sv (name, create); 418 get_sv (name, create);
381#endif 419#endif
382 return get_sv (name, create); 420 return get_sv (name, create);
383} 421}
384 422
385static AV * 423static AV * ecb_noinline
386coro_get_av (pTHX_ const char *name, int create) 424coro_get_av (pTHX_ const char *name, int create)
387{ 425{
388#if PERL_VERSION_ATLEAST (5,10,0) 426#if PERL_VERSION_ATLEAST (5,10,0)
389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 427 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
390 get_av (name, create); 428 get_av (name, create);
391#endif 429#endif
392 return get_av (name, create); 430 return get_av (name, create);
393} 431}
394 432
395static HV * 433static HV * ecb_noinline
396coro_get_hv (pTHX_ const char *name, int create) 434coro_get_hv (pTHX_ const char *name, int create)
397{ 435{
398#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 437 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
400 get_hv (name, create); 438 get_hv (name, create);
401#endif 439#endif
402 return get_hv (name, create); 440 return get_hv (name, create);
403} 441}
404 442
405INLINE void 443ecb_inline void
406coro_times_update () 444coro_times_update (void)
407{ 445{
408#ifdef coro_clock_gettime 446#ifdef coro_clock_gettime
409 struct timespec ts; 447 struct timespec ts;
410 448
411 ts.tv_sec = ts.tv_nsec = 0; 449 ts.tv_sec = ts.tv_nsec = 0;
… …
423 time_real [0] = tv [0]; 461 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000; 462 time_real [1] = tv [1] * 1000;
425#endif 463#endif
426} 464}
427 465
428INLINE void 466ecb_inline void
429coro_times_add (struct coro *c) 467coro_times_add (struct coro *c)
430{ 468{
431 c->t_real [1] += time_real [1]; 469 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 470 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0]; 471 c->t_real [0] += time_real [0];
… …
435 c->t_cpu [1] += time_cpu [1]; 473 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 474 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0]; 475 c->t_cpu [0] += time_cpu [0];
438} 476}
439 477
440INLINE void 478ecb_inline void
441coro_times_sub (struct coro *c) 479coro_times_sub (struct coro *c)
442{ 480{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 481 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]; 482 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0]; 483 c->t_real [0] -= time_real [0];
… …
453/* magic glue */ 491/* magic glue */
454 492
455#define CORO_MAGIC_type_cv 26 493#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext 494#define CORO_MAGIC_type_state PERL_MAGIC_ext
457 495
458#define CORO_MAGIC_NN(sv, type) \ 496#define CORO_MAGIC_NN(sv, type) \
459 (expect_true (SvMAGIC (sv)->mg_type == type) \ 497 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \ 498 ? SvMAGIC (sv) \
461 : mg_find (sv, type)) 499 : mg_find (sv, type))
462 500
463#define CORO_MAGIC(sv, type) \ 501#define CORO_MAGIC(sv, type) \
464 (expect_true (SvMAGIC (sv)) \ 502 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \ 503 ? CORO_MAGIC_NN (sv, type) \
466 : 0) 504 : 0)
467 505
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 506#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) 507#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470 508
471INLINE struct coro * 509ecb_inline MAGIC *
472SvSTATE_ (pTHX_ SV *coro) 510SvSTATEhv_p (pTHX_ SV *coro)
473{ 511{
474 HV *stash;
475 MAGIC *mg; 512 MAGIC *mg;
476 513
514 if (ecb_expect_true (
515 SvTYPE (coro) == SVt_PVHV
516 && (mg = CORO_MAGIC_state (coro))
517 && mg->mg_virtual == &coro_state_vtbl
518 ))
519 return mg;
520
521 return 0;
522}
523
524ecb_inline struct coro *
525SvSTATE_ (pTHX_ SV *coro_sv)
526{
527 MAGIC *mg;
528
477 if (SvROK (coro)) 529 if (SvROK (coro_sv))
478 coro = SvRV (coro); 530 coro_sv = SvRV (coro_sv);
479 531
480 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 532 mg = SvSTATEhv_p (aTHX_ coro_sv);
533 if (!mg)
481 croak ("Coro::State object required"); 534 croak ("Coro::State object required");
482 535
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; 536 return (struct coro *)mg->mg_ptr;
493} 537}
494 538
495#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 539#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
496 540
… …
499#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 543#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
500 544
501/*****************************************************************************/ 545/*****************************************************************************/
502/* padlist management and caching */ 546/* padlist management and caching */
503 547
504static AV * 548ecb_inline PADLIST *
505coro_derive_padlist (pTHX_ CV *cv) 549coro_derive_padlist (pTHX_ CV *cv)
506{ 550{
507 AV *padlist = CvPADLIST (cv); 551 PADLIST *padlist = CvPADLIST (cv);
508 AV *newpadlist, *newpad; 552 PADLIST *newpadlist;
553 PADNAMELIST *padnames;
554 PAD *newpad;
555 PADOFFSET off = PadlistMAX (padlist) + 1;
509 556
510 newpadlist = newAV (); 557#if NEWPADAPI
558
559 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
560 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
561 while (!PadlistARRAY (padlist)[off - 1])
562 --off;
563
564 Perl_pad_push (aTHX_ padlist, off);
565
566 newpad = PadlistARRAY (padlist)[off];
567 PadlistARRAY (padlist)[off] = 0;
568
569#else
570
571#if PERL_VERSION_ATLEAST (5,10,0)
572 Perl_pad_push (aTHX_ padlist, off);
573#else
574 Perl_pad_push (aTHX_ padlist, off, 1);
575#endif
576
577 newpad = PadlistARRAY (padlist)[off];
578 PadlistMAX (padlist) = off - 1;
579
580#endif
581
582 newPADLIST (newpadlist);
583#if !PERL_VERSION_ATLEAST(5,15,3)
584 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
511 AvREAL_off (newpadlist); 585 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 586#endif
517 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
518 --AvFILLp (padlist);
519 587
520 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 588 /* Already extended to 2 elements by newPADLIST. */
521 av_store (newpadlist, 1, (SV *)newpad); 589 PadlistMAX (newpadlist) = 1;
590
591 padnames = PadlistNAMES (padlist);
592 ++PadnamelistREFCNT (padnames);
593 PadlistNAMES (newpadlist) = padnames;
594
595 PadlistARRAY (newpadlist)[1] = newpad;
522 596
523 return newpadlist; 597 return newpadlist;
524} 598}
525 599
526static void 600ecb_inline void
527free_padlist (pTHX_ AV *padlist) 601free_padlist (pTHX_ PADLIST *padlist)
528{ 602{
529 /* may be during global destruction */ 603 /* may be during global destruction */
530 if (!IN_DESTRUCT) 604 if (!IN_DESTRUCT)
531 { 605 {
532 I32 i = AvFILLp (padlist); 606 I32 i = PadlistMAX (padlist);
533 607
534 while (i > 0) /* special-case index 0 */ 608 while (i > 0) /* special-case index 0 */
535 { 609 {
536 /* we try to be extra-careful here */ 610 /* we try to be extra-careful here */
537 AV *av = (AV *)AvARRAY (padlist)[i--]; 611 PAD *pad = PadlistARRAY (padlist)[i--];
538 I32 j = AvFILLp (av);
539 612
613 if (pad)
614 {
615 I32 j = PadMAX (pad);
616
540 while (j >= 0) 617 while (j >= 0)
541 SvREFCNT_dec (AvARRAY (av)[j--]); 618 SvREFCNT_dec (PadARRAY (pad)[j--]);
542 619
543 AvFILLp (av) = -1; 620 PadMAX (pad) = -1;
544 SvREFCNT_dec (av); 621 SvREFCNT_dec (pad);
622 }
545 } 623 }
546 624
547 SvREFCNT_dec (AvARRAY (padlist)[0]); 625 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
548 626
627#if NEWPADAPI
628 Safefree (PadlistARRAY (padlist));
629 Safefree (padlist);
630#else
549 AvFILLp (padlist) = -1; 631 AvFILLp (padlist) = -1;
632 AvREAL_off (padlist);
550 SvREFCNT_dec ((SV*)padlist); 633 SvREFCNT_dec ((SV*)padlist);
634#endif
551 } 635 }
552} 636}
553 637
554static int 638static int
555coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 639coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
556{ 640{
557 AV *padlist; 641 PADLIST *padlist;
558 AV *av = (AV *)mg->mg_obj; 642 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
643 size_t len = *(size_t *)mg->mg_ptr;
559 644
560 /* perl manages to free our internal AV and _then_ call us */ 645 /* perl manages to free our internal AV and _then_ call us */
561 if (IN_DESTRUCT) 646 if (IN_DESTRUCT)
562 return 0; 647 return 0;
563 648
564 /* casting is fun. */ 649 while (len--)
565 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
566 free_padlist (aTHX_ padlist); 650 free_padlist (aTHX_ padlists[len]);
567
568 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
569 651
570 return 0; 652 return 0;
571} 653}
572 654
573static MGVTBL coro_cv_vtbl = { 655static MGVTBL coro_cv_vtbl = {
574 0, 0, 0, 0, 656 0, 0, 0, 0,
575 coro_cv_free 657 coro_cv_free
576}; 658};
577 659
578/* the next two functions merely cache the padlists */ 660/* the next two functions merely cache the padlists */
579static void 661ecb_inline void
580get_padlist (pTHX_ CV *cv) 662get_padlist (pTHX_ CV *cv)
581{ 663{
582 MAGIC *mg = CORO_MAGIC_cv (cv); 664 MAGIC *mg = CORO_MAGIC_cv (cv);
583 AV *av; 665 size_t *lenp;
584 666
585 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 667 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
586 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 668 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
587 else 669 else
588 { 670 {
589#if CORO_PREFER_PERL_FUNCTIONS 671#if CORO_PREFER_PERL_FUNCTIONS
590 /* this is probably cleaner? but also slower! */ 672 /* this is probably cleaner? but also slower! */
591 /* in practise, it seems to be less stable */ 673 /* in practise, it seems to be less stable */
… …
597 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 679 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
598#endif 680#endif
599 } 681 }
600} 682}
601 683
602static void 684ecb_inline void
603put_padlist (pTHX_ CV *cv) 685put_padlist (pTHX_ CV *cv)
604{ 686{
605 MAGIC *mg = CORO_MAGIC_cv (cv); 687 MAGIC *mg = CORO_MAGIC_cv (cv);
606 AV *av;
607 688
608 if (expect_false (!mg)) 689 if (ecb_expect_false (!mg))
690 {
609 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 691 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
692 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
693 mg->mg_len = 1; /* so mg_free frees mg_ptr */
694 }
695 else
696 Renew (mg->mg_ptr,
697 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
698 char);
610 699
611 av = (AV *)mg->mg_obj; 700 ((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} 701}
618 702
619/** load & save, init *******************************************************/ 703/** load & save, init *******************************************************/
620 704
705ecb_inline void
706swap_sv (SV *a, SV *b)
707{
708 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
709 SV tmp;
710
711 /* swap sv_any */
712 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
713
714 /* swap sv_flags */
715 SvFLAGS (&tmp) = SvFLAGS (a);
716 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
717 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
718
719#if PERL_VERSION_ATLEAST (5,10,0)
720 /* perl 5.10 and later complicates this _quite_ a bit, but it also
721 * is much faster, so no quarrels here. alternatively, we could
722 * sv_upgrade to avoid this.
723 */
724 {
725 /* swap sv_u */
726 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
727
728 /* if SvANY points to the head, we need to adjust the pointers,
729 * as the pointer for a still points to b, and maybe vice versa.
730 */
731 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
732 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
733 svany_in_head_set |= 1 << SVt_NV;
734 #endif
735
736 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
737
738 if (svany_in_head (SvTYPE (a)))
739 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
740
741 if (svany_in_head (SvTYPE (b)))
742 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
743 }
744#endif
745}
746
621/* swap sv heads, at least logically */ 747/* swap sv heads, at least logically */
622static void 748static void
623swap_svs (pTHX_ Coro__State c) 749swap_svs_enter (pTHX_ Coro__State c)
624{ 750{
625 int i; 751 int i;
626 752
627 for (i = 0; i <= AvFILLp (c->swap_sv); ) 753 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
628 { 754 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} 755}
667 756
757static void
758swap_svs_leave (pTHX_ Coro__State c)
759{
760 int i;
761
762 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
763 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
764}
765
668#define SWAP_SVS(coro) \ 766#define SWAP_SVS_ENTER(coro) \
669 if (expect_false ((coro)->swap_sv)) \ 767 if (ecb_expect_false ((coro)->swap_sv)) \
670 swap_svs (aTHX_ (coro)) 768 swap_svs_enter (aTHX_ (coro))
769
770#define SWAP_SVS_LEAVE(coro) \
771 if (ecb_expect_false ((coro)->swap_sv)) \
772 swap_svs_leave (aTHX_ (coro))
671 773
672static void 774static void
673on_enterleave_call (pTHX_ SV *cb); 775on_enterleave_call (pTHX_ SV *cb);
674 776
675static void 777static void
… …
678 perl_slots *slot = c->slot; 780 perl_slots *slot = c->slot;
679 c->slot = 0; 781 c->slot = 0;
680 782
681 PL_mainstack = c->mainstack; 783 PL_mainstack = c->mainstack;
682 784
683 GvSV (PL_defgv) = slot->defsv; 785#if CORO_JIT
684 GvAV (PL_defgv) = slot->defav; 786 load_perl_slots (slot);
685 GvSV (PL_errgv) = slot->errsv; 787#else
686 GvSV (irsgv) = slot->irsgv;
687 GvHV (PL_hintgv) = slot->hinthv;
688
689 #define VAR(name,type) PL_ ## name = slot->name; 788 #define VARx(name,expr,type) expr = slot->name;
690 # include "state.h" 789 #include "state.h"
691 #undef VAR 790#endif
692 791
693 { 792 {
694 dSP; 793 dSP;
695 794
696 CV *cv; 795 CV *cv;
697 796
698 /* now do the ugly restore mess */ 797 /* now do the ugly restore mess */
699 while (expect_true (cv = (CV *)POPs)) 798 while (ecb_expect_true (cv = (CV *)POPs))
700 { 799 {
701 put_padlist (aTHX_ cv); /* mark this padlist as available */ 800 put_padlist (aTHX_ cv); /* mark this padlist as available */
702 CvDEPTH (cv) = PTR2IV (POPs); 801 CvDEPTH (cv) = PTR2IV (POPs);
703 CvPADLIST (cv) = (AV *)POPs; 802 CvPADLIST (cv) = (PADLIST *)POPs;
704 } 803 }
705 804
706 PUTBACK; 805 PUTBACK;
707 } 806 }
708 807
709 slf_frame = c->slf_frame; 808 slf_frame = c->slf_frame;
710 CORO_THROW = c->except; 809 CORO_THROW = c->except;
711 810
712 if (expect_false (enable_times)) 811 if (ecb_expect_false (enable_times))
713 { 812 {
714 if (expect_false (!times_valid)) 813 if (ecb_expect_false (!times_valid))
715 coro_times_update (); 814 coro_times_update ();
716 815
717 coro_times_sub (c); 816 coro_times_sub (c);
718 } 817 }
719 818
720 if (expect_false (c->on_enter)) 819 if (ecb_expect_false (c->on_enter))
721 { 820 {
722 int i; 821 int i;
723 822
724 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 823 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
725 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 824 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
726 } 825 }
727 826
827 if (ecb_expect_false (c->on_enter_xs))
828 {
829 int i;
830
831 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
832 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
833 }
834
728 SWAP_SVS (c); 835 SWAP_SVS_ENTER (c);
729} 836}
730 837
731static void 838static void
732save_perl (pTHX_ Coro__State c) 839save_perl (pTHX_ Coro__State c)
733{ 840{
734 SWAP_SVS (c); 841 SWAP_SVS_LEAVE (c);
735 842
843 if (ecb_expect_false (c->on_leave_xs))
844 {
845 int i;
846
847 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
848 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
849 }
850
736 if (expect_false (c->on_leave)) 851 if (ecb_expect_false (c->on_leave))
737 { 852 {
738 int i; 853 int i;
739 854
740 for (i = AvFILLp (c->on_leave); i >= 0; --i) 855 for (i = AvFILLp (c->on_leave); i >= 0; --i)
741 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 856 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
742 } 857 }
743 858
744 times_valid = 0; 859 times_valid = 0;
745 860
746 if (expect_false (enable_times)) 861 if (ecb_expect_false (enable_times))
747 { 862 {
748 coro_times_update (); times_valid = 1; 863 coro_times_update (); times_valid = 1;
749 coro_times_add (c); 864 coro_times_add (c);
750 } 865 }
751 866
… …
765 880
766 XPUSHs (Nullsv); 881 XPUSHs (Nullsv);
767 /* this loop was inspired by pp_caller */ 882 /* this loop was inspired by pp_caller */
768 for (;;) 883 for (;;)
769 { 884 {
770 while (expect_true (cxix >= 0)) 885 while (ecb_expect_true (cxix >= 0))
771 { 886 {
772 PERL_CONTEXT *cx = &ccstk[cxix--]; 887 PERL_CONTEXT *cx = &ccstk[cxix--];
773 888
774 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 889 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
775 { 890 {
776 CV *cv = cx->blk_sub.cv; 891 CV *cv = cx->blk_sub.cv;
777 892
778 if (expect_true (CvDEPTH (cv))) 893 if (ecb_expect_true (CvDEPTH (cv)))
779 { 894 {
780 EXTEND (SP, 3); 895 EXTEND (SP, 3);
781 PUSHs ((SV *)CvPADLIST (cv)); 896 PUSHs ((SV *)CvPADLIST (cv));
782 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 897 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
783 PUSHs ((SV *)cv); 898 PUSHs ((SV *)cv);
… …
786 get_padlist (aTHX_ cv); 901 get_padlist (aTHX_ cv);
787 } 902 }
788 } 903 }
789 } 904 }
790 905
791 if (expect_true (top_si->si_type == PERLSI_MAIN)) 906 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
792 break; 907 break;
793 908
794 top_si = top_si->si_prev; 909 top_si = top_si->si_prev;
795 ccstk = top_si->si_cxstack; 910 ccstk = top_si->si_cxstack;
796 cxix = top_si->si_cxix; 911 cxix = top_si->si_cxix;
… …
798 913
799 PUTBACK; 914 PUTBACK;
800 } 915 }
801 916
802 /* allocate some space on the context stack for our purposes */ 917 /* allocate some space on the context stack for our purposes */
803 /* we manually unroll here, as usually 2 slots is enough */ 918 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 { 919 {
808 unsigned int i; 920 unsigned int i;
921
809 for (i = 3; i < SLOT_COUNT; ++i) 922 for (i = 0; i < SLOT_COUNT; ++i)
810 CXINC; 923 CXINC;
811 } 924
812 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 925 cxstack_ix -= SLOT_COUNT; /* undo allocation */
926 }
813 927
814 c->mainstack = PL_mainstack; 928 c->mainstack = PL_mainstack;
815 929
816 { 930 {
817 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 931 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
818 932
819 slot->defav = GvAV (PL_defgv); 933#if CORO_JIT
820 slot->defsv = DEFSV; 934 save_perl_slots (slot);
821 slot->errsv = ERRSV; 935#else
822 slot->irsgv = GvSV (irsgv);
823 slot->hinthv = GvHV (PL_hintgv);
824
825 #define VAR(name,type) slot->name = PL_ ## name; 936 #define VARx(name,expr,type) slot->name = expr;
826 # include "state.h" 937 #include "state.h"
827 #undef VAR 938#endif
828 } 939 }
829} 940}
830 941
831/* 942/*
832 * allocate various perl stacks. This is almost an exact copy 943 * allocate various perl stacks. This is almost an exact copy
… …
838# define coro_init_stacks(thx) init_stacks () 949# define coro_init_stacks(thx) init_stacks ()
839#else 950#else
840static void 951static void
841coro_init_stacks (pTHX) 952coro_init_stacks (pTHX)
842{ 953{
843 PL_curstackinfo = new_stackinfo(32, 8); 954 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; 955 PL_curstackinfo->si_type = PERLSI_MAIN;
845 PL_curstack = PL_curstackinfo->si_stack; 956 PL_curstack = PL_curstackinfo->si_stack;
846 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 957 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
847 958
848 PL_stack_base = AvARRAY(PL_curstack); 959 PL_stack_base = AvARRAY(PL_curstack);
… …
863#endif 974#endif
864 975
865 New(54,PL_scopestack,8,I32); 976 New(54,PL_scopestack,8,I32);
866 PL_scopestack_ix = 0; 977 PL_scopestack_ix = 0;
867 PL_scopestack_max = 8; 978 PL_scopestack_max = 8;
979#if HAS_SCOPESTACK_NAME
980 New(54,PL_scopestack_name,8,const char*);
981#endif
868 982
869 New(54,PL_savestack,24,ANY); 983 New(54,PL_savestack,24,ANY);
870 PL_savestack_ix = 0; 984 PL_savestack_ix = 0;
871 PL_savestack_max = 24; 985 PL_savestack_max = 24;
986#if PERL_VERSION_ATLEAST (5,24,0)
987 /* perl 5.24 moves SS_MAXPUSH optimisation from */
988 /* the header macros to PL_savestack_max */
989 PL_savestack_max -= SS_MAXPUSH;
990#endif
872 991
873#if !PERL_VERSION_ATLEAST (5,10,0) 992#if !PERL_VERSION_ATLEAST (5,10,0)
874 New(54,PL_retstack,4,OP*); 993 New(54,PL_retstack,4,OP*);
875 PL_retstack_ix = 0; 994 PL_retstack_ix = 0;
876 PL_retstack_max = 4; 995 PL_retstack_max = 4;
… …
900 } 1019 }
901 1020
902 Safefree (PL_tmps_stack); 1021 Safefree (PL_tmps_stack);
903 Safefree (PL_markstack); 1022 Safefree (PL_markstack);
904 Safefree (PL_scopestack); 1023 Safefree (PL_scopestack);
1024#if HAS_SCOPESTACK_NAME
1025 Safefree (PL_scopestack_name);
1026#endif
905 Safefree (PL_savestack); 1027 Safefree (PL_savestack);
906#if !PERL_VERSION_ATLEAST (5,10,0) 1028#if !PERL_VERSION_ATLEAST (5,10,0)
907 Safefree (PL_retstack); 1029 Safefree (PL_retstack);
908#endif 1030#endif
909} 1031}
… …
939 } 1061 }
940 1062
941 return rss; 1063 return rss;
942} 1064}
943 1065
944/** coroutine stack handling ************************************************/ 1066/** 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 1067
950/* apparently < 5.8.8 */ 1068/* apparently < 5.8.8 */
951#ifndef MgPV_nolen_const 1069#ifndef MgPV_nolen_const
952#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1070#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
953 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1071 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
954 (const char*)(mg)->mg_ptr) 1072 (const char*)(mg)->mg_ptr)
955#endif 1073#endif
956 1074
1075/* this will be a patched copy of PL_vtbl_sigelem */
1076static MGVTBL coro_sigelem_vtbl;
1077
1078static int ecb_cold
1079coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1080{
1081 char *key = SvPV_nolen ((SV *)name);
1082
1083 /* do what mg_copy normally does */
1084 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1085 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1086
1087 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1088 if (*key == '_'
1089 && (strEQ (key, "__DIE__")
1090 || strEQ (key, "__WARN__")))
1091 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1092
1093 return 1;
1094}
1095
1096/* perl does not have a %SIG vtbl, we provide one so we can override */
1097/* the magic vtbl for the __DIE__ and __WARN__ members */
1098static const MGVTBL coro_sig_vtbl = {
1099 0, 0, 0, 0, 0,
1100 coro_sig_copy
1101};
1102
957/* 1103/*
958 * This overrides the default magic get method of %SIG elements. 1104 * 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 1105 * 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 1106 * and instead of trying to save and restore the hash elements (extremely slow),
961 * readback here. 1107 * we just provide our own readback here.
962 */ 1108 */
963static int 1109static int ecb_cold
964coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1110coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
965{ 1111{
966 const char *s = MgPV_nolen_const (mg); 1112 const char *s = MgPV_nolen_const (mg);
1113 /* the key must be either __DIE__ or __WARN__ here */
1114 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
967 1115
968 if (*s == '_') 1116 SV *ssv;
969 {
970 SV **svp = 0;
971 1117
972 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
973 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
974
975 if (svp) 1118 if (!*svp)
976 { 1119 ssv = &PL_sv_undef;
977 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1120 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
978 return 0; 1121 ssv = sv_2mortal (newRV_inc (*svp));
979 } 1122 else
980 } 1123 ssv = *svp;
981 1124
982 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1125 sv_setsv (sv, ssv);
1126 return 0;
983} 1127}
984 1128
985static int 1129static int ecb_cold
986coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
987{ 1131{
988 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
989 1135
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; 1136 SV *old = *svp;
1000 *svp = 0; 1137 *svp = 0;
1001 SvREFCNT_dec (old); 1138 SvREFCNT_dec (old);
1002 return 0; 1139 return 0;
1003 }
1004 }
1005
1006 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
1007} 1140}
1008 1141
1009static int 1142static int ecb_cold
1010coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1143coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
1011{ 1144{
1012 const char *s = MgPV_nolen_const (mg); 1145 const char *s = MgPV_nolen_const (mg);
1146 /* the key must be either __DIE__ or __WARN__ here */
1147 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
1013 1148
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; 1149 SV *old = *svp;
1024 *svp = SvOK (sv) ? newSVsv (sv) : 0; 1150 *svp = SvOK (sv) ? newSVsv (sv) : 0;
1025 SvREFCNT_dec (old); 1151 SvREFCNT_dec (old);
1026 return 0; 1152 return 0;
1027 }
1028 }
1029
1030 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
1031} 1153}
1032 1154
1033static void 1155static void
1034prepare_nop (pTHX_ struct coro_transfer_args *ta) 1156prepare_nop (pTHX_ struct coro_transfer_args *ta)
1035{ 1157{
… …
1047slf_check_repeat (pTHX_ struct CoroSLF *frame) 1169slf_check_repeat (pTHX_ struct CoroSLF *frame)
1048{ 1170{
1049 return 1; 1171 return 1;
1050} 1172}
1051 1173
1174/** coroutine stack handling ************************************************/
1175
1052static UNOP init_perl_op; 1176static UNOP init_perl_op;
1053 1177
1054static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1178ecb_noinline static void /* noinline to keep it out of the transfer fast path */
1055init_perl (pTHX_ struct coro *coro) 1179init_perl (pTHX_ struct coro *coro)
1056{ 1180{
1057 /* 1181 /*
1058 * emulate part of the perl startup here. 1182 * emulate part of the perl startup here.
1059 */ 1183 */
… …
1074 PL_parser = 0; 1198 PL_parser = 0;
1075#endif 1199#endif
1076 PL_hints = 0; 1200 PL_hints = 0;
1077 1201
1078 /* recreate the die/warn hooks */ 1202 /* recreate the die/warn hooks */
1079 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1203 PL_diehook = SvREFCNT_inc (rv_diehook);
1080 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1204 PL_warnhook = SvREFCNT_inc (rv_warnhook);
1081 1205
1082 GvSV (PL_defgv) = newSV (0); 1206 GvSV (PL_defgv) = newSV (0);
1083 GvAV (PL_defgv) = coro->args; coro->args = 0; 1207 GvAV (PL_defgv) = coro->args; coro->args = 0;
1084 GvSV (PL_errgv) = newSV (0); 1208 GvSV (PL_errgv) = newSV (0);
1085 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1209 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1086 GvHV (PL_hintgv) = 0; 1210 GvHV (PL_hintgv) = newHV ();
1211#if PERL_VERSION_ATLEAST (5,10,0)
1212 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1213#endif
1087 PL_rs = newSVsv (GvSV (irsgv)); 1214 PL_rs = newSVsv (GvSV (irsgv));
1088 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1215 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
1089 1216
1090 { 1217 {
1091 dSP; 1218 dSP;
… …
1106 /* this newly created coroutine might be run on an existing cctx which most 1233 /* 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. 1234 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1108 */ 1235 */
1109 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1236 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 */ 1237 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1238 slf_frame.destroy = 0;
1111 1239
1112 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1240 /* 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; 1241 init_perl_op.op_next = PL_op;
1114 init_perl_op.op_type = OP_ENTERSUB; 1242 init_perl_op.op_type = OP_ENTERSUB;
1115 init_perl_op.op_ppaddr = pp_slf; 1243 init_perl_op.op_ppaddr = pp_slf;
… …
1118 PL_op = (OP *)&init_perl_op; 1246 PL_op = (OP *)&init_perl_op;
1119 1247
1120 /* copy throw, in case it was set before init_perl */ 1248 /* copy throw, in case it was set before init_perl */
1121 CORO_THROW = coro->except; 1249 CORO_THROW = coro->except;
1122 1250
1123 SWAP_SVS (coro); 1251 SWAP_SVS_ENTER (coro);
1124 1252
1125 if (expect_false (enable_times)) 1253 if (ecb_expect_false (enable_times))
1126 { 1254 {
1127 coro_times_update (); 1255 coro_times_update ();
1128 coro_times_sub (coro); 1256 coro_times_sub (coro);
1129 } 1257 }
1130} 1258}
… …
1154destroy_perl (pTHX_ struct coro *coro) 1282destroy_perl (pTHX_ struct coro *coro)
1155{ 1283{
1156 SV *svf [9]; 1284 SV *svf [9];
1157 1285
1158 { 1286 {
1287 SV *old_current = SvRV (coro_current);
1159 struct coro *current = SvSTATE_current; 1288 struct coro *current = SvSTATE (old_current);
1160 1289
1161 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1290 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1162 1291
1163 save_perl (aTHX_ current); 1292 save_perl (aTHX_ current);
1164 SvRV_set (coro_current, (SV *)coro->hv); /* this will cause acroak in transfer_check */ 1293
1294 /* this will cause transfer_check to croak on block*/
1295 SvRV_set (coro_current, (SV *)coro->hv);
1296
1165 load_perl (aTHX_ coro); 1297 load_perl (aTHX_ coro);
1166 1298
1299 /* restore swapped sv's */
1300 SWAP_SVS_LEAVE (coro);
1301
1167 coro_unwind_stacks (aTHX); 1302 coro_unwind_stacks (aTHX);
1303
1168 coro_destruct_stacks (aTHX); 1304 coro_destruct_stacks (aTHX);
1169 1305
1170 /* restore swapped sv's */
1171 SWAP_SVS (coro);
1172
1173 // now save some sv's to be free'd later 1306 /* now save some sv's to be free'd later */
1174 svf [0] = GvSV (PL_defgv); 1307 svf [0] = GvSV (PL_defgv);
1175 svf [1] = (SV *)GvAV (PL_defgv); 1308 svf [1] = (SV *)GvAV (PL_defgv);
1176 svf [2] = GvSV (PL_errgv); 1309 svf [2] = GvSV (PL_errgv);
1177 svf [3] = (SV *)PL_defoutgv; 1310 svf [3] = (SV *)PL_defoutgv;
1178 svf [4] = PL_rs; 1311 svf [4] = PL_rs;
… …
1180 svf [6] = (SV *)GvHV (PL_hintgv); 1313 svf [6] = (SV *)GvHV (PL_hintgv);
1181 svf [7] = PL_diehook; 1314 svf [7] = PL_diehook;
1182 svf [8] = PL_warnhook; 1315 svf [8] = PL_warnhook;
1183 assert (9 == sizeof (svf) / sizeof (*svf)); 1316 assert (9 == sizeof (svf) / sizeof (*svf));
1184 1317
1185 SvRV_set (coro_current, (SV *)current->hv); 1318 SvRV_set (coro_current, old_current);
1319
1186 load_perl (aTHX_ current); 1320 load_perl (aTHX_ current);
1187 } 1321 }
1188 1322
1189 { 1323 {
1190 unsigned int i; 1324 unsigned int i;
… …
1194 1328
1195 SvREFCNT_dec (coro->saved_deffh); 1329 SvREFCNT_dec (coro->saved_deffh);
1196 SvREFCNT_dec (coro->rouse_cb); 1330 SvREFCNT_dec (coro->rouse_cb);
1197 SvREFCNT_dec (coro->invoke_cb); 1331 SvREFCNT_dec (coro->invoke_cb);
1198 SvREFCNT_dec (coro->invoke_av); 1332 SvREFCNT_dec (coro->invoke_av);
1333 SvREFCNT_dec (coro->on_enter_xs);
1334 SvREFCNT_dec (coro->on_leave_xs);
1199 } 1335 }
1200} 1336}
1201 1337
1202INLINE void 1338ecb_inline void
1203free_coro_mortal (pTHX) 1339free_coro_mortal (pTHX)
1204{ 1340{
1205 if (expect_true (coro_mortal)) 1341 if (ecb_expect_true (coro_mortal))
1206 { 1342 {
1207 SvREFCNT_dec (coro_mortal); 1343 SvREFCNT_dec ((SV *)coro_mortal);
1208 coro_mortal = 0; 1344 coro_mortal = 0;
1209 } 1345 }
1210} 1346}
1211 1347
1212static int 1348static int
… …
1266 1402
1267 if (PL_curcop != &PL_compiling) 1403 if (PL_curcop != &PL_compiling)
1268 { 1404 {
1269 SV **cb; 1405 SV **cb;
1270 1406
1271 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1407 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1272 { 1408 {
1273 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1409 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1274 1410
1275 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1411 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1276 { 1412 {
… …
1286 SAVETMPS; 1422 SAVETMPS;
1287 EXTEND (SP, 3); 1423 EXTEND (SP, 3);
1288 PUSHMARK (SP); 1424 PUSHMARK (SP);
1289 PUSHs (&PL_sv_yes); 1425 PUSHs (&PL_sv_yes);
1290 PUSHs (fullname); 1426 PUSHs (fullname);
1291 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1427 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1292 PUTBACK; 1428 PUTBACK;
1293 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1429 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1294 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1430 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1295 SPAGAIN; 1431 SPAGAIN;
1296 FREETMPS; 1432 FREETMPS;
… …
1345 1481
1346 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1482 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1347} 1483}
1348 1484
1349/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1485/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1350static void NOINLINE 1486static void ecb_noinline
1351cctx_prepare (pTHX) 1487cctx_prepare (pTHX)
1352{ 1488{
1353 PL_top_env = &PL_start_env; 1489 PL_top_env = &PL_start_env;
1354 1490
1355 if (cctx_current->flags & CC_TRACE) 1491 if (cctx_current->flags & CC_TRACE)
… …
1366 slf_frame.prepare = slf_prepare_set_stacklevel; 1502 slf_frame.prepare = slf_prepare_set_stacklevel;
1367 slf_frame.check = slf_check_set_stacklevel; 1503 slf_frame.check = slf_check_set_stacklevel;
1368} 1504}
1369 1505
1370/* the tail of transfer: execute stuff we can only do after a transfer */ 1506/* the tail of transfer: execute stuff we can only do after a transfer */
1371INLINE void 1507ecb_inline void
1372transfer_tail (pTHX) 1508transfer_tail (pTHX)
1373{ 1509{
1374 free_coro_mortal (aTHX); 1510 free_coro_mortal (aTHX);
1511}
1512
1513/* try to exit the same way perl's main function would do */
1514/* we do not bother resetting the environment or other things *7
1515/* that are not, uhm, essential */
1516/* this obviously also doesn't work when perl is embedded */
1517static void ecb_noinline ecb_cold
1518perlish_exit (pTHX)
1519{
1520 int exitstatus = perl_destruct (PL_curinterp);
1521 perl_free (PL_curinterp);
1522 exit (exitstatus);
1375} 1523}
1376 1524
1377/* 1525/*
1378 * this is a _very_ stripped down perl interpreter ;) 1526 * this is a _very_ stripped down perl interpreter ;)
1379 */ 1527 */
… …
1406 * coro body here, as perl_run destroys these. Likewise, we cannot catch 1554 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1407 * runtime errors here, as this is just a random interpreter, not a thread. 1555 * runtime errors here, as this is just a random interpreter, not a thread.
1408 */ 1556 */
1409 1557
1410 /* 1558 /*
1559 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1560 * requires PL_scopestack_ix, so do it here if required.
1561 */
1562 if (!PL_scopestack_ix)
1563 ENTER;
1564
1565 /*
1411 * If perl-run returns we assume exit() was being called or the coro 1566 * If perl-run returns we assume exit() was being called or the coro
1412 * fell off the end, which seems to be the only valid (non-bug) 1567 * fell off the end, which seems to be the only valid (non-bug)
1413 * reason for perl_run to return. We try to exit by jumping to the 1568 * reason for perl_run to return. We try to mimic whatever perl is normally
1414 * bootstrap-time "top" top_env, as we cannot restore the "main" 1569 * doing in that case. YMMV.
1415 * coroutine as Coro has no such concept.
1416 * This actually isn't valid with the pthread backend, but OSes requiring
1417 * that backend are too broken to do it in a standards-compliant way.
1418 */ 1570 */
1419 PL_top_env = main_top_env; 1571 perlish_exit (aTHX);
1420 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1421 } 1572 }
1422} 1573}
1423 1574
1424static coro_cctx * 1575static coro_cctx *
1425cctx_new () 1576cctx_new (void)
1426{ 1577{
1427 coro_cctx *cctx; 1578 coro_cctx *cctx;
1428 1579
1429 ++cctx_count; 1580 ++cctx_count;
1430 New (0, cctx, 1, coro_cctx); 1581 New (0, cctx, 1, coro_cctx);
… …
1436 return cctx; 1587 return cctx;
1437} 1588}
1438 1589
1439/* create a new cctx only suitable as source */ 1590/* create a new cctx only suitable as source */
1440static coro_cctx * 1591static coro_cctx *
1441cctx_new_empty () 1592cctx_new_empty (void)
1442{ 1593{
1443 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1444 1595
1445 cctx->sptr = 0; 1596 cctx->stack.sptr = 0;
1446 coro_create (&cctx->cctx, 0, 0, 0, 0); 1597 coro_create (&cctx->cctx, 0, 0, 0, 0);
1447 1598
1448 return cctx; 1599 return cctx;
1449} 1600}
1450 1601
1451/* create a new cctx suitable as destination/running a perl interpreter */ 1602/* create a new cctx suitable as destination/running a perl interpreter */
1452static coro_cctx * 1603static coro_cctx *
1453cctx_new_run () 1604cctx_new_run (void)
1454{ 1605{
1455 coro_cctx *cctx = cctx_new (); 1606 coro_cctx *cctx = cctx_new ();
1456 void *stack_start;
1457 size_t stack_size;
1458 1607
1459#if HAVE_MMAP 1608 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1460 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1461 /* mmap supposedly does allocate-on-write for us */
1462 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1463
1464 if (cctx->sptr != (void *)-1)
1465 {
1466 #if CORO_STACKGUARD
1467 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1468 #endif
1469 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1470 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1471 cctx->flags |= CC_MAPPED;
1472 } 1609 {
1473 else
1474#endif
1475 {
1476 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1477 New (0, cctx->sptr, cctx_stacksize, long);
1478
1479 if (!cctx->sptr)
1480 {
1481 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1610 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1482 _exit (EXIT_FAILURE); 1611 _exit (EXIT_FAILURE);
1483 }
1484
1485 stack_start = cctx->sptr;
1486 stack_size = cctx->ssize;
1487 } 1612 }
1488 1613
1489 #if CORO_USE_VALGRIND
1490 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1491 #endif
1492
1493 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1614 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1494 1615
1495 return cctx; 1616 return cctx;
1496} 1617}
1497 1618
1498static void 1619static void
… …
1504 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current)); 1625 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1505 1626
1506 --cctx_count; 1627 --cctx_count;
1507 coro_destroy (&cctx->cctx); 1628 coro_destroy (&cctx->cctx);
1508 1629
1509 /* coro_transfer creates new, empty cctx's */ 1630 coro_stack_free (&cctx->stack);
1510 if (cctx->sptr)
1511 {
1512 #if CORO_USE_VALGRIND
1513 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1514 #endif
1515
1516#if HAVE_MMAP
1517 if (cctx->flags & CC_MAPPED)
1518 munmap (cctx->sptr, cctx->ssize);
1519 else
1520#endif
1521 Safefree (cctx->sptr);
1522 }
1523 1631
1524 Safefree (cctx); 1632 Safefree (cctx);
1525} 1633}
1526 1634
1527/* wether this cctx should be destructed */ 1635/* wether this cctx should be destructed */
1528#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1636#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1529 1637
1530static coro_cctx * 1638static coro_cctx *
1531cctx_get (pTHX) 1639cctx_get (pTHX)
1532{ 1640{
1533 while (expect_true (cctx_first)) 1641 while (ecb_expect_true (cctx_first))
1534 { 1642 {
1535 coro_cctx *cctx = cctx_first; 1643 coro_cctx *cctx = cctx_first;
1536 cctx_first = cctx->next; 1644 cctx_first = cctx->next;
1537 --cctx_idle; 1645 --cctx_idle;
1538 1646
1539 if (expect_true (!CCTX_EXPIRED (cctx))) 1647 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1540 return cctx; 1648 return cctx;
1541 1649
1542 cctx_destroy (cctx); 1650 cctx_destroy (cctx);
1543 } 1651 }
1544 1652
… …
1546} 1654}
1547 1655
1548static void 1656static void
1549cctx_put (coro_cctx *cctx) 1657cctx_put (coro_cctx *cctx)
1550{ 1658{
1551 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1659 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1552 1660
1553 /* free another cctx if overlimit */ 1661 /* free another cctx if overlimit */
1554 if (expect_false (cctx_idle >= cctx_max_idle)) 1662 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1555 { 1663 {
1556 coro_cctx *first = cctx_first; 1664 coro_cctx *first = cctx_first;
1557 cctx_first = first->next; 1665 cctx_first = first->next;
1558 --cctx_idle; 1666 --cctx_idle;
1559 1667
… …
1570static void 1678static void
1571transfer_check (pTHX_ struct coro *prev, struct coro *next) 1679transfer_check (pTHX_ struct coro *prev, struct coro *next)
1572{ 1680{
1573 /* TODO: throwing up here is considered harmful */ 1681 /* TODO: throwing up here is considered harmful */
1574 1682
1575 if (expect_true (prev != next)) 1683 if (ecb_expect_true (prev != next))
1576 { 1684 {
1577 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1685 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1578 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1686 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1579 1687
1580 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1688 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1581 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1689 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1582 1690
1583#if !PERL_VERSION_ATLEAST (5,10,0) 1691#if !PERL_VERSION_ATLEAST (5,10,0)
1584 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1692 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1585 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1693 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1586#endif 1694#endif
1587 } 1695 }
1588} 1696}
1589 1697
1590/* always use the TRANSFER macro */ 1698/* always use the TRANSFER macro */
1591static void NOINLINE /* noinline so we have a fixed stackframe */ 1699static void ecb_noinline /* noinline so we have a fixed stackframe */
1592transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1700transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1593{ 1701{
1594 dSTACKLEVEL; 1702 dSTACKLEVEL;
1595 1703
1596 /* sometimes transfer is only called to set idle_sp */ 1704 /* sometimes transfer is only called to set idle_sp */
1597 if (expect_false (!prev)) 1705 if (ecb_expect_false (!prev))
1598 { 1706 {
1599 cctx_current->idle_sp = STACKLEVEL; 1707 cctx_current->idle_sp = STACKLEVEL;
1600 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1708 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1601 } 1709 }
1602 else if (expect_true (prev != next)) 1710 else if (ecb_expect_true (prev != next))
1603 { 1711 {
1604 coro_cctx *cctx_prev; 1712 coro_cctx *cctx_prev;
1605 1713
1606 if (expect_false (prev->flags & CF_NEW)) 1714 if (ecb_expect_false (prev->flags & CF_NEW))
1607 { 1715 {
1608 /* create a new empty/source context */ 1716 /* create a new empty/source context */
1609 prev->flags &= ~CF_NEW; 1717 prev->flags &= ~CF_NEW;
1610 prev->flags |= CF_RUNNING; 1718 prev->flags |= CF_RUNNING;
1611 } 1719 }
… …
1614 next->flags |= CF_RUNNING; 1722 next->flags |= CF_RUNNING;
1615 1723
1616 /* first get rid of the old state */ 1724 /* first get rid of the old state */
1617 save_perl (aTHX_ prev); 1725 save_perl (aTHX_ prev);
1618 1726
1619 if (expect_false (next->flags & CF_NEW)) 1727 if (ecb_expect_false (next->flags & CF_NEW))
1620 { 1728 {
1621 /* need to start coroutine */ 1729 /* need to start coroutine */
1622 next->flags &= ~CF_NEW; 1730 next->flags &= ~CF_NEW;
1623 /* setup coroutine call */ 1731 /* setup coroutine call */
1624 init_perl (aTHX_ next); 1732 init_perl (aTHX_ next);
1625 } 1733 }
1626 else 1734 else
1627 load_perl (aTHX_ next); 1735 load_perl (aTHX_ next);
1628 1736
1629 /* possibly untie and reuse the cctx */ 1737 /* possibly untie and reuse the cctx */
1630 if (expect_true ( 1738 if (ecb_expect_true (
1631 cctx_current->idle_sp == STACKLEVEL 1739 cctx_current->idle_sp == STACKLEVEL
1632 && !(cctx_current->flags & CC_TRACE) 1740 && !(cctx_current->flags & CC_TRACE)
1633 && !force_cctx 1741 && !force_cctx
1634 )) 1742 ))
1635 { 1743 {
1636 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1744 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1637 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1745 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1638 1746
1639 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1747 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1640 /* without this the next cctx_get might destroy the running cctx while still in use */ 1748 /* without this the next cctx_get might destroy the running cctx while still in use */
1641 if (expect_false (CCTX_EXPIRED (cctx_current))) 1749 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1642 if (expect_true (!next->cctx)) 1750 if (ecb_expect_true (!next->cctx))
1643 next->cctx = cctx_get (aTHX); 1751 next->cctx = cctx_get (aTHX);
1644 1752
1645 cctx_put (cctx_current); 1753 cctx_put (cctx_current);
1646 } 1754 }
1647 else 1755 else
1648 prev->cctx = cctx_current; 1756 prev->cctx = cctx_current;
1649 1757
1650 ++next->usecount; 1758 ++next->usecount;
1651 1759
1652 cctx_prev = cctx_current; 1760 cctx_prev = cctx_current;
1653 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1761 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1654 1762
1655 next->cctx = 0; 1763 next->cctx = 0;
1656 1764
1657 if (expect_false (cctx_prev != cctx_current)) 1765 if (ecb_expect_false (cctx_prev != cctx_current))
1658 { 1766 {
1659 cctx_prev->top_env = PL_top_env; 1767 cctx_prev->top_env = PL_top_env;
1660 PL_top_env = cctx_current->top_env; 1768 PL_top_env = cctx_current->top_env;
1661 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1769 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1662 } 1770 }
… …
1668#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1776#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1669#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1777#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1670 1778
1671/** high level stuff ********************************************************/ 1779/** high level stuff ********************************************************/
1672 1780
1781/* this function is actually Coro, not Coro::State, but we call it from here */
1782/* because it is convenient - but it hasn't been declared yet for that reason */
1783static void
1784coro_call_on_destroy (pTHX_ struct coro *coro);
1785
1673static void 1786static void
1674coro_state_destroy (pTHX_ struct coro *coro) 1787coro_state_destroy (pTHX_ struct coro *coro)
1675{ 1788{
1676 if (coro->flags & CF_DESTROYED) 1789 if (coro->flags & CF_ZOMBIE)
1677 return; 1790 return;
1678 1791
1679 /* this callback is reserved for slf functions needing to do cleanup */
1680 if (coro->on_destroy && !PL_dirty)
1681 coro->on_destroy (aTHX_ coro); 1792 slf_destroy (aTHX_ coro);
1682 1793
1683 /*
1684 * The on_destroy above most likely is from an SLF call.
1685 * Since by definition the SLF call will not finish when we destroy
1686 * the coro, we will have to force-finish it here, otherwise
1687 * cleanup functions cannot call SLF functions.
1688 */
1689 coro->slf_frame.prepare = 0;
1690
1691 coro->flags |= CF_DESTROYED; 1794 coro->flags |= CF_ZOMBIE;
1692 1795
1693 if (coro->flags & CF_READY) 1796 if (coro->flags & CF_READY)
1694 { 1797 {
1695 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1798 /* reduce nready, as destroying a ready coro effectively unreadies it */
1696 /* alternative: look through all ready queues and remove the coro */ 1799 /* alternative: look through all ready queues and remove the coro */
1697 --coro_nready; 1800 --coro_nready;
1698 } 1801 }
1699 else 1802 else
1700 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1803 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1804
1805 if (coro->next) coro->next->prev = coro->prev;
1806 if (coro->prev) coro->prev->next = coro->next;
1807 if (coro == coro_first) coro_first = coro->next;
1701 1808
1702 if (coro->mainstack 1809 if (coro->mainstack
1703 && coro->mainstack != main_mainstack 1810 && coro->mainstack != main_mainstack
1704 && coro->slot 1811 && coro->slot
1705 && !PL_dirty) 1812 && !PL_dirty)
1706 destroy_perl (aTHX_ coro); 1813 destroy_perl (aTHX_ coro);
1707 1814
1708 if (coro->next) coro->next->prev = coro->prev;
1709 if (coro->prev) coro->prev->next = coro->next;
1710 if (coro == coro_first) coro_first = coro->next;
1711
1712 cctx_destroy (coro->cctx); 1815 cctx_destroy (coro->cctx);
1713 SvREFCNT_dec (coro->startcv); 1816 SvREFCNT_dec (coro->startcv);
1714 SvREFCNT_dec (coro->args); 1817 SvREFCNT_dec (coro->args);
1715 SvREFCNT_dec (coro->swap_sv); 1818 SvREFCNT_dec (coro->swap_sv);
1716 SvREFCNT_dec (CORO_THROW); 1819 SvREFCNT_dec (CORO_THROW);
1820
1821 coro_call_on_destroy (aTHX_ coro);
1822
1823 /* more destruction mayhem in coro_state_free */
1717} 1824}
1718 1825
1719static int 1826static int
1720coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1827coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1721{ 1828{
1722 struct coro *coro = (struct coro *)mg->mg_ptr; 1829 struct coro *coro = (struct coro *)mg->mg_ptr;
1723 mg->mg_ptr = 0; 1830 mg->mg_ptr = 0;
1724 1831
1725 coro->hv = 0;
1726
1727 if (--coro->refcnt < 0)
1728 {
1729 coro_state_destroy (aTHX_ coro); 1832 coro_state_destroy (aTHX_ coro);
1833 SvREFCNT_dec (coro->on_destroy);
1834 SvREFCNT_dec (coro->status);
1835
1730 Safefree (coro); 1836 Safefree (coro);
1731 }
1732 1837
1733 return 0; 1838 return 0;
1734} 1839}
1735 1840
1736static int 1841static int ecb_cold
1737coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1842coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1738{ 1843{
1739 struct coro *coro = (struct coro *)mg->mg_ptr; 1844 /* called when perl clones the current process the slow way (windows process emulation) */
1740 1845 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1741 ++coro->refcnt; 1846 mg->mg_ptr = 0;
1847 mg->mg_virtual = 0;
1742 1848
1743 return 0; 1849 return 0;
1744} 1850}
1745 1851
1746static MGVTBL coro_state_vtbl = { 1852static MGVTBL coro_state_vtbl = {
… …
1771 TRANSFER (ta, 1); 1877 TRANSFER (ta, 1);
1772} 1878}
1773 1879
1774/** Coro ********************************************************************/ 1880/** Coro ********************************************************************/
1775 1881
1776INLINE void 1882ecb_inline void
1777coro_enq (pTHX_ struct coro *coro) 1883coro_enq (pTHX_ struct coro *coro)
1778{ 1884{
1779 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1885 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1780 1886
1781 SvREFCNT_inc_NN (coro->hv); 1887 SvREFCNT_inc_NN (coro->hv);
… …
1783 coro->next_ready = 0; 1889 coro->next_ready = 0;
1784 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1890 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1785 ready [1] = coro; 1891 ready [1] = coro;
1786} 1892}
1787 1893
1788INLINE struct coro * 1894ecb_inline struct coro *
1789coro_deq (pTHX) 1895coro_deq (pTHX)
1790{ 1896{
1791 int prio; 1897 int prio;
1792 1898
1793 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1899 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1846{ 1952{
1847 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1953 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1848} 1954}
1849 1955
1850/* expects to own a reference to next->hv */ 1956/* expects to own a reference to next->hv */
1851INLINE void 1957ecb_inline void
1852prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1958prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1853{ 1959{
1854 SV *prev_sv = SvRV (coro_current); 1960 SV *prev_sv = SvRV (coro_current);
1855 1961
1856 ta->prev = SvSTATE_hv (prev_sv); 1962 ta->prev = SvSTATE_hv (prev_sv);
… …
1869{ 1975{
1870 for (;;) 1976 for (;;)
1871 { 1977 {
1872 struct coro *next = coro_deq (aTHX); 1978 struct coro *next = coro_deq (aTHX);
1873 1979
1874 if (expect_true (next)) 1980 if (ecb_expect_true (next))
1875 { 1981 {
1876 /* cannot transfer to destroyed coros, skip and look for next */ 1982 /* cannot transfer to destroyed coros, skip and look for next */
1877 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1983 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1878 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1984 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1879 else 1985 else
1880 { 1986 {
1881 next->flags &= ~CF_READY; 1987 next->flags &= ~CF_READY;
1882 --coro_nready; 1988 --coro_nready;
… …
1890 /* nothing to schedule: call the idle handler */ 1996 /* nothing to schedule: call the idle handler */
1891 if (SvROK (sv_idle) 1997 if (SvROK (sv_idle)
1892 && SvOBJECT (SvRV (sv_idle))) 1998 && SvOBJECT (SvRV (sv_idle)))
1893 { 1999 {
1894 if (SvRV (sv_idle) == SvRV (coro_current)) 2000 if (SvRV (sv_idle) == SvRV (coro_current))
2001 {
2002 require_pv ("Carp");
2003
2004 {
2005 dSP;
2006
2007 ENTER;
2008 SAVETMPS;
2009
2010 PUSHMARK (SP);
1895 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught"); 2011 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2012 PUTBACK;
2013 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2014
2015 FREETMPS;
2016 LEAVE;
2017 }
2018 }
1896 2019
1897 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2020 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1898 api_ready (aTHX_ SvRV (sv_idle)); 2021 api_ready (aTHX_ SvRV (sv_idle));
1899 --coro_nready; 2022 --coro_nready;
1900 } 2023 }
… …
1915 } 2038 }
1916 } 2039 }
1917 } 2040 }
1918} 2041}
1919 2042
1920INLINE void 2043ecb_inline void
1921prepare_cede (pTHX_ struct coro_transfer_args *ta) 2044prepare_cede (pTHX_ struct coro_transfer_args *ta)
1922{ 2045{
1923 api_ready (aTHX_ coro_current); 2046 api_ready (aTHX_ coro_current);
1924 prepare_schedule (aTHX_ ta); 2047 prepare_schedule (aTHX_ ta);
1925} 2048}
1926 2049
1927INLINE void 2050ecb_inline void
1928prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2051prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1929{ 2052{
1930 SV *prev = SvRV (coro_current); 2053 SV *prev = SvRV (coro_current);
1931 2054
1932 if (coro_nready) 2055 if (coro_nready)
… …
1962{ 2085{
1963 struct coro_transfer_args ta; 2086 struct coro_transfer_args ta;
1964 2087
1965 prepare_cede (aTHX_ &ta); 2088 prepare_cede (aTHX_ &ta);
1966 2089
1967 if (expect_true (ta.prev != ta.next)) 2090 if (ecb_expect_true (ta.prev != ta.next))
1968 { 2091 {
1969 TRANSFER (ta, 1); 2092 TRANSFER (ta, 1);
1970 return 1; 2093 return 1;
1971 } 2094 }
1972 else 2095 else
… …
2015 coro->slot->runops = RUNOPS_DEFAULT; 2138 coro->slot->runops = RUNOPS_DEFAULT;
2016 } 2139 }
2017} 2140}
2018 2141
2019static void 2142static void
2143coro_push_av (pTHX_ AV *av, I32 gimme_v)
2144{
2145 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2146 {
2147 dSP;
2148
2149 if (gimme_v == G_SCALAR)
2150 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2151 else
2152 {
2153 int i;
2154 EXTEND (SP, AvFILLp (av) + 1);
2155
2156 for (i = 0; i <= AvFILLp (av); ++i)
2157 PUSHs (AvARRAY (av)[i]);
2158 }
2159
2160 PUTBACK;
2161 }
2162}
2163
2164static void
2165coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2166{
2167 if (!coro->on_destroy)
2168 coro->on_destroy = newAV ();
2169
2170 av_push (coro->on_destroy, cb);
2171}
2172
2173static void
2174slf_destroy_join (pTHX_ struct CoroSLF *frame)
2175{
2176 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2177}
2178
2179static int
2180slf_check_join (pTHX_ struct CoroSLF *frame)
2181{
2182 struct coro *coro = (struct coro *)frame->data;
2183
2184 if (!coro->status)
2185 return 1;
2186
2187 frame->destroy = 0;
2188
2189 coro_push_av (aTHX_ coro->status, GIMME_V);
2190
2191 SvREFCNT_dec ((SV *)coro->hv);
2192
2193 return 0;
2194}
2195
2196static void
2197slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2200
2201 if (items > 1)
2202 croak ("join called with too many arguments");
2203
2204 if (coro->status)
2205 frame->prepare = prepare_nop;
2206 else
2207 {
2208 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2209 frame->prepare = prepare_schedule;
2210 }
2211
2212 frame->check = slf_check_join;
2213 frame->destroy = slf_destroy_join;
2214 frame->data = (void *)coro;
2215 SvREFCNT_inc (coro->hv);
2216}
2217
2218static void
2020coro_call_on_destroy (pTHX_ struct coro *coro) 2219coro_call_on_destroy (pTHX_ struct coro *coro)
2021{ 2220{
2022 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2221 AV *od = coro->on_destroy;
2023 2222
2024 if (on_destroyp) 2223 if (!od)
2025 { 2224 return;
2026 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2027 AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
2028 AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
2029 2225
2226 coro->on_destroy = 0;
2227 sv_2mortal ((SV *)od);
2228
2030 while (AvFILLp (on_destroy) >= 0) 2229 while (AvFILLp (od) >= 0)
2230 {
2231 SV *cb = sv_2mortal (av_pop (od));
2232
2233 /* coro hv's (and only hv's at the moment) are supported as well */
2234 if (SvSTATEhv_p (aTHX_ cb))
2235 api_ready (aTHX_ cb);
2236 else
2031 { 2237 {
2032 dSP; /* don't disturb outer sp */ 2238 dSP; /* don't disturb outer sp */
2033 SV *cb = av_pop (on_destroy);
2034
2035 PUSHMARK (SP); 2239 PUSHMARK (SP);
2036 2240
2037 if (statusp) 2241 if (coro->status)
2038 { 2242 {
2039 int i; 2243 PUTBACK;
2040 EXTEND (SP, AvFILLp (status) + 1); 2244 coro_push_av (aTHX_ coro->status, G_ARRAY);
2041 2245 SPAGAIN;
2042 for (i = 0; i <= AvFILLp (status); ++i)
2043 PUSHs (AvARRAY (status)[i]);
2044 } 2246 }
2045 2247
2046 PUTBACK; 2248 PUTBACK;
2047 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2249 call_sv (cb, G_VOID | G_DISCARD);
2048 } 2250 }
2049 } 2251 }
2050} 2252}
2051 2253
2052static void 2254static void
2053coro_set_status (HV *coro_hv, SV **arg, int items) 2255coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2054{ 2256{
2055 AV *av = newAV (); 2257 AV *av;
2258
2259 if (coro->status)
2260 {
2261 av = coro->status;
2262 av_clear (av);
2263 }
2264 else
2265 av = coro->status = newAV ();
2056 2266
2057 /* items are actually not so common, so optimise for this case */ 2267 /* items are actually not so common, so optimise for this case */
2058 if (items) 2268 if (items)
2059 { 2269 {
2060 int i; 2270 int i;
… …
2062 av_extend (av, items - 1); 2272 av_extend (av, items - 1);
2063 2273
2064 for (i = 0; i < items; ++i) 2274 for (i = 0; i < items; ++i)
2065 av_push (av, SvREFCNT_inc_NN (arg [i])); 2275 av_push (av, SvREFCNT_inc_NN (arg [i]));
2066 } 2276 }
2067
2068 hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2069} 2277}
2070 2278
2071static void 2279static void
2072slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) 2280slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2073{ 2281{
… …
2085static void 2293static void
2086slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2294slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2087{ 2295{
2088 HV *coro_hv = (HV *)SvRV (coro_current); 2296 HV *coro_hv = (HV *)SvRV (coro_current);
2089 2297
2090 coro_set_status (coro_hv, arg, items); 2298 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2091 slf_init_terminate_cancel_common (frame, coro_hv); 2299 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2092} 2300}
2093 2301
2094static void 2302static void
2095slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2303slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2096{ 2304{
… …
2101 croak ("Coro::cancel called without coro object,"); 2309 croak ("Coro::cancel called without coro object,");
2102 2310
2103 coro = SvSTATE (arg [0]); 2311 coro = SvSTATE (arg [0]);
2104 coro_hv = coro->hv; 2312 coro_hv = coro->hv;
2105 2313
2106 coro_set_status (coro_hv, arg + 1, items - 1); 2314 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2107 2315
2108 if (expect_false (coro->flags & CF_NOCANCEL)) 2316 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2109 { 2317 {
2110 /* coro currently busy cancelling something, so just notify it */ 2318 /* coro currently busy cancelling something, so just notify it */
2111 coro->slf_frame.data = (void *)coro; 2319 coro->slf_frame.data = (void *)coro;
2112 2320
2113 frame->prepare = prepare_nop; 2321 frame->prepare = prepare_nop;
2114 frame->check = slf_check_nop; 2322 frame->check = slf_check_nop;
2115 } 2323 }
2116 else if (coro_hv == (HV *)SvRV (coro_current)) 2324 else if (coro_hv == (HV *)SvRV (coro_current))
2117 { 2325 {
2118 /* cancelling the current coro is allowed, and equals terminate */ 2326 /* cancelling the current coro is allowed, and equals terminate */
2119 slf_init_terminate_cancel_common (frame, coro_hv); 2327 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2120 } 2328 }
2121 else 2329 else
2122 { 2330 {
2123 struct coro *self = SvSTATE_current; 2331 struct coro *self = SvSTATE_current;
2332
2333 if (!self)
2334 croak ("Coro::cancel called outside of thread content,");
2124 2335
2125 /* otherwise we cancel directly, purely for speed reasons 2336 /* otherwise we cancel directly, purely for speed reasons
2126 * unfortunately, this requires some magic trickery, as 2337 * unfortunately, this requires some magic trickery, as
2127 * somebody else could cancel us, so we have to fight the cancellation. 2338 * somebody else could cancel us, so we have to fight the cancellation.
2128 * this is ugly, and hopefully fully worth the extra speed. 2339 * this is ugly, and hopefully fully worth the extra speed.
2129 * besides, I can't get the slow-but-safe version working... 2340 * besides, I can't get the slow-but-safe version working...
2130 */ 2341 */
2131 slf_frame.data = 0; 2342 slf_frame.data = 0;
2132 self->flags |= CF_NOCANCEL; 2343 self->flags |= CF_NOCANCEL;
2133
2134 coro_state_destroy (aTHX_ coro); 2344 coro_state_destroy (aTHX_ coro);
2135 coro_call_on_destroy (aTHX_ coro);
2136
2137 self->flags &= ~CF_NOCANCEL; 2345 self->flags &= ~CF_NOCANCEL;
2138 2346
2139 if (slf_frame.data) 2347 if (slf_frame.data)
2140 { 2348 {
2141 /* while we were busy we have been cancelled, so terminate */ 2349 /* while we were busy we have been cancelled, so terminate */
2142 slf_init_terminate_cancel_common (frame, self->hv); 2350 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2143 } 2351 }
2144 else 2352 else
2145 { 2353 {
2146 frame->prepare = prepare_nop; 2354 frame->prepare = prepare_nop;
2147 frame->check = slf_check_nop; 2355 frame->check = slf_check_nop;
2148 } 2356 }
2149 } 2357 }
2150} 2358}
2151 2359
2360static int
2361slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2362{
2363 frame->prepare = 0;
2364 coro_unwind_stacks (aTHX);
2365
2366 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2367
2368 return 1;
2369}
2370
2371static int
2372safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2373{
2374 if (coro->cctx)
2375 croak ("coro inside C callback, unable to cancel at this time, caught");
2376
2377 if (coro->flags & CF_NEW)
2378 {
2379 coro_set_status (aTHX_ coro, arg, items);
2380 coro_state_destroy (aTHX_ coro);
2381 }
2382 else
2383 {
2384 if (!coro->slf_frame.prepare)
2385 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2386
2387 slf_destroy (aTHX_ coro);
2388
2389 coro_set_status (aTHX_ coro, arg, items);
2390 coro->slf_frame.prepare = prepare_nop;
2391 coro->slf_frame.check = slf_check_safe_cancel;
2392
2393 api_ready (aTHX_ (SV *)coro->hv);
2394 }
2395
2396 return 1;
2397}
2398
2152/*****************************************************************************/ 2399/*****************************************************************************/
2153/* async pool handler */ 2400/* async pool handler */
2154 2401
2155static int 2402static int
2156slf_check_pool_handler (pTHX_ struct CoroSLF *frame) 2403slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
… …
2185slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2432slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{ 2433{
2187 HV *hv = (HV *)SvRV (coro_current); 2434 HV *hv = (HV *)SvRV (coro_current);
2188 struct coro *coro = SvSTATE_hv ((SV *)hv); 2435 struct coro *coro = SvSTATE_hv ((SV *)hv);
2189 2436
2190 if (expect_true (coro->saved_deffh)) 2437 if (ecb_expect_true (coro->saved_deffh))
2191 { 2438 {
2192 /* subsequent iteration */ 2439 /* subsequent iteration */
2193 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2440 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2194 coro->saved_deffh = 0; 2441 coro->saved_deffh = 0;
2195 2442
2196 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2443 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2197 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2444 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2198 { 2445 {
2199 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2446 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2200 coro->invoke_av = newAV (); 2447 return;
2201
2202 frame->prepare = prepare_nop;
2203 } 2448 }
2204 else 2449 else
2205 { 2450 {
2206 av_clear (GvAV (PL_defgv)); 2451 av_clear (GvAV (PL_defgv));
2207 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2452 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2208 2453
2454 if (ecb_expect_false (coro->swap_sv))
2455 {
2456 SWAP_SVS_LEAVE (coro);
2457 SvREFCNT_dec_NN (coro->swap_sv);
2458 coro->swap_sv = 0;
2459 }
2460
2209 coro->prio = 0; 2461 coro->prio = 0;
2210 2462
2211 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2463 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2212 api_trace (aTHX_ coro_current, 0); 2464 api_trace (aTHX_ coro_current, 0);
2213 2465
2214 frame->prepare = prepare_schedule; 2466 frame->prepare = prepare_schedule;
2215 av_push (av_async_pool, SvREFCNT_inc (hv)); 2467 av_push (av_async_pool, SvREFCNT_inc (hv));
2216 } 2468 }
… …
2257 2509
2258static int 2510static int
2259slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2511slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2260{ 2512{
2261 SV *data = (SV *)frame->data; 2513 SV *data = (SV *)frame->data;
2262 2514
2263 if (CORO_THROW) 2515 if (CORO_THROW)
2264 return 0; 2516 return 0;
2265 2517
2266 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2518 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2267 return 1; 2519 return 1;
… …
2303 cb = sv_2mortal (coro->rouse_cb); 2555 cb = sv_2mortal (coro->rouse_cb);
2304 coro->rouse_cb = 0; 2556 coro->rouse_cb = 0;
2305 } 2557 }
2306 2558
2307 if (!SvROK (cb) 2559 if (!SvROK (cb)
2308 || SvTYPE (SvRV (cb)) != SVt_PVCV 2560 || SvTYPE (SvRV (cb)) != SVt_PVCV
2309 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2561 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2310 croak ("Coro::rouse_wait called with illegal callback argument,"); 2562 croak ("Coro::rouse_wait called with illegal callback argument,");
2311 2563
2312 { 2564 {
2313 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2565 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2430static void 2682static void
2431slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2683slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2432{ 2684{
2433 frame->prepare = prepare_cede_notself; 2685 frame->prepare = prepare_cede_notself;
2434 frame->check = slf_check_nop; 2686 frame->check = slf_check_nop;
2687}
2688
2689/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2690static void
2691slf_destroy (pTHX_ struct coro *coro)
2692{
2693 struct CoroSLF frame = coro->slf_frame;
2694
2695 /*
2696 * The on_destroy below most likely is from an SLF call.
2697 * Since by definition the SLF call will not finish when we destroy
2698 * the coro, we will have to force-finish it here, otherwise
2699 * cleanup functions cannot call SLF functions.
2700 */
2701 coro->slf_frame.prepare = 0;
2702
2703 /* this callback is reserved for slf functions needing to do cleanup */
2704 if (frame.destroy && frame.prepare && !PL_dirty)
2705 frame.destroy (aTHX_ &frame);
2435} 2706}
2436 2707
2437/* 2708/*
2438 * these not obviously related functions are all rolled into one 2709 * these not obviously related functions are all rolled into one
2439 * function to increase chances that they all will call transfer with the same 2710 * function to increase chances that they all will call transfer with the same
… …
2446 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2717 I32 checkmark; /* mark SP to see how many elements check has pushed */
2447 2718
2448 /* set up the slf frame, unless it has already been set-up */ 2719 /* set up the slf frame, unless it has already been set-up */
2449 /* the latter happens when a new coro has been started */ 2720 /* the latter happens when a new coro has been started */
2450 /* or when a new cctx was attached to an existing coroutine */ 2721 /* or when a new cctx was attached to an existing coroutine */
2451 if (expect_true (!slf_frame.prepare)) 2722 if (ecb_expect_true (!slf_frame.prepare))
2452 { 2723 {
2453 /* first iteration */ 2724 /* first iteration */
2454 dSP; 2725 dSP;
2455 SV **arg = PL_stack_base + TOPMARK + 1; 2726 SV **arg = PL_stack_base + TOPMARK + 1;
2456 int items = SP - arg; /* args without function object */ 2727 int items = SP - arg; /* args without function object */
… …
2497 while (slf_frame.check (aTHX_ &slf_frame)); 2768 while (slf_frame.check (aTHX_ &slf_frame));
2498 2769
2499 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2770 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2500 2771
2501 /* exception handling */ 2772 /* exception handling */
2502 if (expect_false (CORO_THROW)) 2773 if (ecb_expect_false (CORO_THROW))
2503 { 2774 {
2504 SV *exception = sv_2mortal (CORO_THROW); 2775 SV *exception = sv_2mortal (CORO_THROW);
2505 2776
2506 CORO_THROW = 0; 2777 CORO_THROW = 0;
2507 sv_setsv (ERRSV, exception); 2778 sv_setsv (ERRSV, exception);
2508 croak (0); 2779 croak (0);
2509 } 2780 }
2510 2781
2511 /* return value handling - mostly like entersub */ 2782 /* return value handling - mostly like entersub */
2512 /* make sure we put something on the stack in scalar context */ 2783 /* make sure we put something on the stack in scalar context */
2513 if (GIMME_V == G_SCALAR) 2784 if (GIMME_V == G_SCALAR
2785 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2514 { 2786 {
2515 dSP; 2787 dSP;
2516 SV **bot = PL_stack_base + checkmark; 2788 SV **bot = PL_stack_base + checkmark;
2517 2789
2518 if (sp == bot) /* too few, push undef */ 2790 if (sp == bot) /* too few, push undef */
2519 bot [1] = &PL_sv_undef; 2791 bot [1] = &PL_sv_undef;
2520 else if (sp != bot + 1) /* too many, take last one */ 2792 else /* too many, take last one */
2521 bot [1] = *sp; 2793 bot [1] = *sp;
2522 2794
2523 SP = bot + 1; 2795 SP = bot + 1;
2524 2796
2525 PUTBACK; 2797 PUTBACK;
… …
2623{ 2895{
2624 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); 2896 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2625 on_enterleave_call (aTHX_ sv_2mortal (cb)); 2897 on_enterleave_call (aTHX_ sv_2mortal (cb));
2626} 2898}
2627 2899
2900static void
2901enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2902{
2903 if (!hook)
2904 return;
2905
2906 if (!*avp)
2907 {
2908 *avp = newAV ();
2909 AvREAL_off (*avp);
2910 }
2911
2912 av_push (*avp, (SV *)hook);
2913 av_push (*avp, (SV *)arg);
2914}
2915
2916static void
2917enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2918{
2919 AV *av = *avp;
2920 int i;
2921
2922 if (!av)
2923 return;
2924
2925 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2926 if (AvARRAY (av)[i] == (SV *)hook)
2927 {
2928 if (execute)
2929 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2930
2931 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2932 av_pop (av);
2933 av_pop (av);
2934 break;
2935 }
2936
2937 if (AvFILLp (av) >= 0)
2938 {
2939 *avp = 0;
2940 SvREFCNT_dec_NN (av);
2941 }
2942}
2943
2944static void
2945api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2946{
2947 struct coro *coro = SvSTATE (coro_sv);
2948
2949 if (SvSTATE_current == coro)
2950 if (enter)
2951 enter (aTHX_ enter_arg);
2952
2953 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2954 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2955}
2956
2957static void
2958api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2959{
2960 struct coro *coro = SvSTATE (coro_sv);
2961
2962 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2963 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2964}
2965
2966static void
2967savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2968{
2969 struct coro *coro = SvSTATE_current;
2970
2971 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2972}
2973
2974static void
2975savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2976{
2977 struct coro *coro = SvSTATE_current;
2978
2979 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2980}
2981
2982static void
2983api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2984{
2985 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2986
2987 /* this ought to be much cheaper than malloc + a single destructor call */
2988 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2989 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2990}
2991
2628/*****************************************************************************/ 2992/*****************************************************************************/
2629/* PerlIO::cede */ 2993/* PerlIO::cede */
2630 2994
2631typedef struct 2995typedef struct
2632{ 2996{
2633 PerlIOBuf base; 2997 PerlIOBuf base;
2634 NV next, every; 2998 NV next, every;
2635} PerlIOCede; 2999} PerlIOCede;
2636 3000
2637static IV 3001static IV ecb_cold
2638PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3002PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2639{ 3003{
2640 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3004 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2641 3005
2642 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3006 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2643 self->next = nvtime () + self->every; 3007 self->next = nvtime () + self->every;
2644 3008
2645 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3009 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2646} 3010}
2647 3011
2648static SV * 3012static SV * ecb_cold
2649PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3013PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2650{ 3014{
2651 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3015 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2652 3016
2653 return newSVnv (self->every); 3017 return newSVnv (self->every);
… …
2760 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3124 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2761 PUTBACK; 3125 PUTBACK;
2762 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3126 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2763 } 3127 }
2764 3128
2765 SvREFCNT_dec (cb); 3129 SvREFCNT_dec_NN (cb);
2766 } 3130 }
2767} 3131}
2768 3132
2769static void 3133static void
2770coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3134coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2771{ 3135{
2772 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3136 /* call $sem->adjust (0) to possibly wake up some other waiters */
2773 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3137 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2774} 3138}
2775 3139
2776static int 3140static int
2777slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3141slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2778{ 3142{
2779 AV *av = (AV *)frame->data; 3143 AV *av = (AV *)frame->data;
2780 SV *count_sv = AvARRAY (av)[0]; 3144 SV *count_sv = AvARRAY (av)[0];
3145 SV *coro_hv = SvRV (coro_current);
3146
3147 frame->destroy = 0;
2781 3148
2782 /* if we are about to throw, don't actually acquire the lock, just throw */ 3149 /* if we are about to throw, don't actually acquire the lock, just throw */
2783 if (CORO_THROW) 3150 if (ecb_expect_false (CORO_THROW))
3151 {
3152 /* we still might be responsible for the semaphore, so wake up others */
3153 coro_semaphore_adjust (aTHX_ av, 0);
3154
2784 return 0; 3155 return 0;
3156 }
2785 else if (SvIVX (count_sv) > 0) 3157 else if (SvIVX (count_sv) > 0)
2786 { 3158 {
2787 SvSTATE_current->on_destroy = 0;
2788
2789 if (acquire) 3159 if (acquire)
2790 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3160 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2791 else 3161 else
2792 coro_semaphore_adjust (aTHX_ av, 0); 3162 coro_semaphore_adjust (aTHX_ av, 0);
2793 3163
… …
2797 { 3167 {
2798 int i; 3168 int i;
2799 /* if we were woken up but can't down, we look through the whole */ 3169 /* if we were woken up but can't down, we look through the whole */
2800 /* waiters list and only add us if we aren't in there already */ 3170 /* waiters list and only add us if we aren't in there already */
2801 /* this avoids some degenerate memory usage cases */ 3171 /* this avoids some degenerate memory usage cases */
2802 3172 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2803 for (i = 1; i <= AvFILLp (av); ++i)
2804 if (AvARRAY (av)[i] == SvRV (coro_current)) 3173 if (AvARRAY (av)[i] == coro_hv)
2805 return 1; 3174 return 1;
2806 3175
2807 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3176 av_push (av, SvREFCNT_inc (coro_hv));
2808 return 1; 3177 return 1;
2809 } 3178 }
2810} 3179}
2811 3180
2812static int 3181static int
… …
2835 { 3204 {
2836 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3205 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2837 3206
2838 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3207 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2839 frame->prepare = prepare_schedule; 3208 frame->prepare = prepare_schedule;
2840
2841 /* to avoid race conditions when a woken-up coro gets terminated */ 3209 /* to avoid race conditions when a woken-up coro gets terminated */
2842 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3210 /* we arrange for a temporary on_destroy that calls adjust (0) */
2843 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3211 frame->destroy = coro_semaphore_destroy;
2844 } 3212 }
2845} 3213}
2846 3214
2847static void 3215static void
2848slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3216slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2906 { 3274 {
2907 api_ready (aTHX_ cb); 3275 api_ready (aTHX_ cb);
2908 sv_setiv (cb, 0); /* signal waiter */ 3276 sv_setiv (cb, 0); /* signal waiter */
2909 } 3277 }
2910 3278
2911 SvREFCNT_dec (cb); 3279 SvREFCNT_dec_NN (cb);
2912 3280
2913 --count; 3281 --count;
2914 } 3282 }
2915} 3283}
2916 3284
… …
3001 } 3369 }
3002 3370
3003 av_push (state, data_sv); 3371 av_push (state, data_sv);
3004 3372
3005 api_ready (aTHX_ coro); 3373 api_ready (aTHX_ coro);
3006 SvREFCNT_dec (coro); 3374 SvREFCNT_dec_NN (coro);
3007 SvREFCNT_dec ((AV *)state); 3375 SvREFCNT_dec_NN ((AV *)state);
3008} 3376}
3009 3377
3010static int 3378static int
3011slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3379slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3012{ 3380{
… …
3017 /* it quickly returns */ 3385 /* it quickly returns */
3018 if (CORO_THROW) 3386 if (CORO_THROW)
3019 return 0; 3387 return 0;
3020 3388
3021 /* one element that is an RV? repeat! */ 3389 /* one element that is an RV? repeat! */
3022 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3390 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3023 return 1; 3391 return 1;
3024 3392
3025 /* restore status */ 3393 /* restore status */
3026 { 3394 {
3027 SV *data_sv = av_pop (state); 3395 SV *data_sv = av_pop (state);
… …
3030 errno = data->errorno; 3398 errno = data->errorno;
3031 PL_laststype = data->laststype; 3399 PL_laststype = data->laststype;
3032 PL_laststatval = data->laststatval; 3400 PL_laststatval = data->laststatval;
3033 PL_statcache = data->statcache; 3401 PL_statcache = data->statcache;
3034 3402
3035 SvREFCNT_dec (data_sv); 3403 SvREFCNT_dec_NN (data_sv);
3036 } 3404 }
3037 3405
3038 /* push result values */ 3406 /* push result values */
3039 { 3407 {
3040 dSP; 3408 dSP;
… …
3066 dSP; 3434 dSP;
3067 3435
3068 static SV *prio_cv; 3436 static SV *prio_cv;
3069 static SV *prio_sv; 3437 static SV *prio_sv;
3070 3438
3071 if (expect_false (!prio_cv)) 3439 if (ecb_expect_false (!prio_cv))
3072 { 3440 {
3073 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3441 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3074 prio_sv = newSViv (0); 3442 prio_sv = newSViv (0);
3075 } 3443 }
3076 3444
… …
3182 } 3550 }
3183 3551
3184 return coro_sv; 3552 return coro_sv;
3185} 3553}
3186 3554
3555#ifndef __cplusplus
3556ecb_cold XS(boot_Coro__State);
3557#endif
3558
3559#if CORO_JIT
3560
3561static void ecb_noinline ecb_cold
3562pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3563{
3564 dSP;
3565 AV *av = newAV ();
3566
3567 av_store (av, 3, newSVuv (d));
3568 av_store (av, 2, newSVuv (c));
3569 av_store (av, 1, newSVuv (b));
3570 av_store (av, 0, newSVuv (a));
3571
3572 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3573
3574 PUTBACK;
3575}
3576
3577static void ecb_noinline ecb_cold
3578jit_init (pTHX)
3579{
3580 dSP;
3581 SV *load, *save;
3582 char *map_base;
3583 char *load_ptr, *save_ptr;
3584 STRLEN load_len, save_len, map_len;
3585 int count;
3586
3587 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3588
3589 PUSHMARK (SP);
3590 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3591 #include "state.h"
3592 count = call_pv ("Coro::State::_jit", G_ARRAY);
3593 SPAGAIN;
3594
3595 save = POPs; save_ptr = SvPVbyte (save, save_len);
3596 load = POPs; load_ptr = SvPVbyte (load, load_len);
3597
3598 map_len = load_len + save_len + 16;
3599
3600 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3601
3602 if (map_base == (char *)MAP_FAILED)
3603 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3604
3605 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3606
3607 load_perl_slots = (load_save_perl_slots_type)map_base;
3608 memcpy (map_base, load_ptr, load_len);
3609
3610 map_base += (load_len + 15) & ~15;
3611
3612 save_perl_slots = (load_save_perl_slots_type)map_base;
3613 memcpy (map_base, save_ptr, save_len);
3614
3615 /* we are good citizens and try to make the page read-only, so the evil evil */
3616 /* hackers might have it a bit more difficult */
3617 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3618
3619 PUTBACK;
3620 eval_pv ("undef &Coro::State::_jit", 1);
3621}
3622
3623#endif
3624
3187MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3625MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
3188 3626
3189PROTOTYPES: DISABLE 3627PROTOTYPES: DISABLE
3190 3628
3191BOOT: 3629BOOT:
3192{ 3630{
3631#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3632#include "state.h"
3193#ifdef USE_ITHREADS 3633#ifdef USE_ITHREADS
3194# if CORO_PTHREAD 3634# if CORO_PTHREAD
3195 coro_thx = PERL_GET_CONTEXT; 3635 coro_thx = PERL_GET_CONTEXT;
3196# endif 3636# endif
3197#endif 3637#endif
3198 BOOT_PAGESIZE; 3638 /* perl defines these to check for existance first, but why it doesn't */
3639 /* just create them one at init time is not clear to me, except for */
3640 /* programs trying to delete them, but... */
3641 /* anyway, we declare this as invalid and make sure they are initialised here */
3642 DEFSV;
3643 ERRSV;
3199 3644
3200 cctx_current = cctx_new_empty (); 3645 cctx_current = cctx_new_empty ();
3201 3646
3202 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3647 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
3203 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3648 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3204 3649
3205 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3650 {
3206 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3651 /*
3207 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3652 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3653 * by coro_sig_vtbl in hash values.
3654 */
3655 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3656
3657 /* this only works if perl doesn't have a vtbl for %SIG */
3658 assert (!mg->mg_virtual);
3659
3660 /*
3661 * The irony is that the perl API itself asserts that mg_virtual
3662 * must be non-const, yet perl5porters insisted on marking their
3663 * vtbls as read-only, just to thwart perl modules from patching
3664 * them.
3665 */
3666 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3667 mg->mg_flags |= MGf_COPY;
3668
3669 coro_sigelem_vtbl = PL_vtbl_sigelem;
3670 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3671 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3672 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3673 }
3208 3674
3209 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3210 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3675 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3211 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3676 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3212 3677
3213 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3678 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3214 3679
… …
3246 coroapi.prepare_cede_notself = prepare_cede_notself; 3711 coroapi.prepare_cede_notself = prepare_cede_notself;
3247 3712
3248 time_init (aTHX); 3713 time_init (aTHX);
3249 3714
3250 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3715 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3716#if CORO_JIT
3717 PUTBACK;
3718 jit_init (aTHX);
3719 SPAGAIN;
3720#endif
3251} 3721}
3252 3722
3253SV * 3723SV *
3254new (SV *klass, ...) 3724new (SV *klass, ...)
3255 ALIAS: 3725 ALIAS:
… …
3262void 3732void
3263transfer (...) 3733transfer (...)
3264 PROTOTYPE: $$ 3734 PROTOTYPE: $$
3265 CODE: 3735 CODE:
3266 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3736 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3267
3268void
3269_exit (int code)
3270 PROTOTYPE: $
3271 CODE:
3272 _exit (code);
3273 3737
3274SV * 3738SV *
3275clone (Coro::State coro) 3739clone (Coro::State coro)
3276 CODE: 3740 CODE:
3277{ 3741{
… …
3332void 3796void
3333list () 3797list ()
3334 PROTOTYPE: 3798 PROTOTYPE:
3335 PPCODE: 3799 PPCODE:
3336{ 3800{
3337 struct coro *coro; 3801 struct coro *coro;
3338 for (coro = coro_first; coro; coro = coro->next) 3802 for (coro = coro_first; coro; coro = coro->next)
3339 if (coro->hv) 3803 if (coro->hv)
3340 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3804 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3341} 3805}
3342 3806
… …
3397 PROTOTYPE: $ 3861 PROTOTYPE: $
3398 ALIAS: 3862 ALIAS:
3399 is_ready = CF_READY 3863 is_ready = CF_READY
3400 is_running = CF_RUNNING 3864 is_running = CF_RUNNING
3401 is_new = CF_NEW 3865 is_new = CF_NEW
3402 is_destroyed = CF_DESTROYED 3866 is_destroyed = CF_ZOMBIE
3867 is_zombie = CF_ZOMBIE
3403 is_suspended = CF_SUSPENDED 3868 is_suspended = CF_SUSPENDED
3404 CODE: 3869 CODE:
3405 RETVAL = boolSV (coro->flags & ix); 3870 RETVAL = boolSV (coro->flags & ix);
3406 OUTPUT: 3871 OUTPUT:
3407 RETVAL 3872 RETVAL
3408 3873
3409void 3874void
3410throw (Coro::State self, SV *exception = &PL_sv_undef) 3875throw (SV *self, SV *exception = &PL_sv_undef)
3411 PROTOTYPE: $;$ 3876 PROTOTYPE: $;$
3412 CODE: 3877 CODE:
3413{ 3878{
3879 struct coro *coro = SvSTATE (self);
3414 struct coro *current = SvSTATE_current; 3880 struct coro *current = SvSTATE_current;
3415 SV **exceptionp = self == current ? &CORO_THROW : &self->except; 3881 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3416 SvREFCNT_dec (*exceptionp); 3882 SvREFCNT_dec (*exceptionp);
3417 SvGETMAGIC (exception); 3883 SvGETMAGIC (exception);
3418 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0; 3884 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3885
3886 api_ready (aTHX_ self);
3419} 3887}
3420 3888
3421void 3889void
3422api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3890api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3423 PROTOTYPE: $;$ 3891 PROTOTYPE: $;$
… …
3500 3968
3501void 3969void
3502times (Coro::State self) 3970times (Coro::State self)
3503 PPCODE: 3971 PPCODE:
3504{ 3972{
3505 struct coro *current = SvSTATE (coro_current); 3973 struct coro *current = SvSTATE (coro_current);
3506 3974
3507 if (expect_false (current == self)) 3975 if (ecb_expect_false (current == self))
3508 { 3976 {
3509 coro_times_update (); 3977 coro_times_update ();
3510 coro_times_add (SvSTATE (coro_current)); 3978 coro_times_add (SvSTATE (coro_current));
3511 } 3979 }
3512 3980
3513 EXTEND (SP, 2); 3981 EXTEND (SP, 2);
3514 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3982 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3515 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3983 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3516 3984
3517 if (expect_false (current == self)) 3985 if (ecb_expect_false (current == self))
3518 coro_times_sub (SvSTATE (coro_current)); 3986 coro_times_sub (SvSTATE (coro_current));
3519} 3987}
3520 3988
3521void 3989void
3522swap_sv (Coro::State coro, SV *sv, SV *swapsv) 3990swap_sv (Coro::State coro, SV *sva, SV *svb)
3523 CODE: 3991 CODE:
3524{ 3992{
3525 struct coro *current = SvSTATE_current; 3993 struct coro *current = SvSTATE_current;
3994 AV *swap_sv;
3995 int i;
3996
3997 sva = SvRV (sva);
3998 svb = SvRV (svb);
3526 3999
3527 if (current == coro) 4000 if (current == coro)
3528 SWAP_SVS (current); 4001 SWAP_SVS_LEAVE (current);
3529 4002
3530 if (!coro->swap_sv) 4003 if (!coro->swap_sv)
3531 coro->swap_sv = newAV (); 4004 coro->swap_sv = newAV ();
3532 4005
4006 swap_sv = coro->swap_sv;
4007
4008 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4009 {
4010 SV *a = AvARRAY (swap_sv)[i ];
4011 SV *b = AvARRAY (swap_sv)[i + 1];
4012
4013 if (a == sva && b == svb)
4014 {
4015 SvREFCNT_dec_NN (a);
4016 SvREFCNT_dec_NN (b);
4017
4018 for (; i <= AvFILLp (swap_sv) - 2; i++)
4019 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4020
4021 AvFILLp (swap_sv) -= 2;
4022
4023 goto removed;
4024 }
4025 }
4026
3533 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); 4027 av_push (swap_sv, SvREFCNT_inc_NN (sva));
3534 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); 4028 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4029
4030 removed:
3535 4031
3536 if (current == coro) 4032 if (current == coro)
3537 SWAP_SVS (current); 4033 SWAP_SVS_ENTER (current);
3538} 4034}
3539 4035
3540 4036
3541MODULE = Coro::State PACKAGE = Coro 4037MODULE = Coro::State PACKAGE = Coro
3542 4038
3543BOOT: 4039BOOT:
3544{ 4040{
4041 if (SVt_LAST > 32)
4042 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
4043
3545 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4044 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3546 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4045 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3547 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 4046 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3548 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3549 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4047 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3550 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4048 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3551 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4049 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3552 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4050 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3553 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4051 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3554 4052
3555 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4053 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3556 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4054 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3557 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4055 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3558 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ 4056 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3559 4057
3560 coro_stash = gv_stashpv ("Coro", TRUE); 4058 coro_stash = gv_stashpv ("Coro", TRUE);
3561 4059
3562 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 4060 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3563 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 4061 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3564 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); 4062 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
… …
3576 coroapi.ready = api_ready; 4074 coroapi.ready = api_ready;
3577 coroapi.is_ready = api_is_ready; 4075 coroapi.is_ready = api_is_ready;
3578 coroapi.nready = coro_nready; 4076 coroapi.nready = coro_nready;
3579 coroapi.current = coro_current; 4077 coroapi.current = coro_current;
3580 4078
4079 coroapi.enterleave_hook = api_enterleave_hook;
4080 coroapi.enterleave_unhook = api_enterleave_unhook;
4081 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4082
3581 /*GCoroAPI = &coroapi;*/ 4083 /*GCoroAPI = &coroapi;*/
3582 sv_setiv (sv, (IV)&coroapi); 4084 sv_setiv (sv, PTR2IV (&coroapi));
3583 SvREADONLY_on (sv); 4085 SvREADONLY_on (sv);
3584 } 4086 }
3585} 4087}
3586 4088
3587SV * 4089SV *
… …
3596void 4098void
3597_destroy (Coro::State coro) 4099_destroy (Coro::State coro)
3598 CODE: 4100 CODE:
3599 /* used by the manager thread */ 4101 /* used by the manager thread */
3600 coro_state_destroy (aTHX_ coro); 4102 coro_state_destroy (aTHX_ coro);
4103
4104void
4105on_destroy (Coro::State coro, SV *cb)
4106 CODE:
3601 coro_call_on_destroy (aTHX_ coro); 4107 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4108
4109void
4110join (...)
4111 CODE:
4112 CORO_EXECUTE_SLF_XS (slf_init_join);
3602 4113
3603void 4114void
3604terminate (...) 4115terminate (...)
3605 CODE: 4116 CODE:
3606 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4117 CORO_EXECUTE_SLF_XS (slf_init_terminate);
… …
3608void 4119void
3609cancel (...) 4120cancel (...)
3610 CODE: 4121 CODE:
3611 CORO_EXECUTE_SLF_XS (slf_init_cancel); 4122 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3612 4123
4124int
4125safe_cancel (Coro::State self, ...)
4126 C_ARGS: aTHX_ self, &ST (1), items - 1
4127
3613void 4128void
3614schedule (...) 4129schedule (...)
3615 CODE: 4130 CODE:
3616 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4131 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3617 4132
… …
3637 4152
3638void 4153void
3639_set_current (SV *current) 4154_set_current (SV *current)
3640 PROTOTYPE: $ 4155 PROTOTYPE: $
3641 CODE: 4156 CODE:
3642 SvREFCNT_dec (SvRV (coro_current)); 4157 SvREFCNT_dec_NN (SvRV (coro_current));
3643 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4158 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3644 4159
3645void 4160void
3646_set_readyhook (SV *hook) 4161_set_readyhook (SV *hook)
3647 PROTOTYPE: $ 4162 PROTOTYPE: $
… …
3731 4246
3732 if ((SV *)hv == &PL_sv_undef) 4247 if ((SV *)hv == &PL_sv_undef)
3733 { 4248 {
3734 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); 4249 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3735 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); 4250 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3736 SvREFCNT_dec (sv); 4251 SvREFCNT_dec_NN (sv);
3737 } 4252 }
3738 4253
3739 { 4254 {
3740 struct coro *coro = SvSTATE_hv (hv); 4255 struct coro *coro = SvSTATE_hv (hv);
3741 4256
… …
3748 api_ready (aTHX_ (SV *)hv); 4263 api_ready (aTHX_ (SV *)hv);
3749 4264
3750 if (GIMME_V != G_VOID) 4265 if (GIMME_V != G_VOID)
3751 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4266 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3752 else 4267 else
3753 SvREFCNT_dec (hv); 4268 SvREFCNT_dec_NN (hv);
3754} 4269}
3755 4270
3756SV * 4271SV *
3757rouse_cb () 4272rouse_cb ()
3758 PROTOTYPE: 4273 PROTOTYPE:
… …
3773 on_leave = 1 4288 on_leave = 1
3774 PROTOTYPE: & 4289 PROTOTYPE: &
3775 CODE: 4290 CODE:
3776{ 4291{
3777 struct coro *coro = SvSTATE_current; 4292 struct coro *coro = SvSTATE_current;
3778 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4293 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3779 4294
3780 block = s_get_cv_croak (block); 4295 block = s_get_cv_croak (block);
3781 4296
3782 if (!*avp) 4297 if (!*avp)
3783 *avp = newAV (); 4298 *avp = newAV ();
… …
3803 4318
3804SV * 4319SV *
3805new (SV *klass, SV *count = 0) 4320new (SV *klass, SV *count = 0)
3806 CODE: 4321 CODE:
3807{ 4322{
3808 int semcnt = 1; 4323 int semcnt = 1;
3809 4324
3810 if (count) 4325 if (count)
3811 { 4326 {
3812 SvGETMAGIC (count); 4327 SvGETMAGIC (count);
3813 4328
… …
3837 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4352 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3838 OUTPUT: 4353 OUTPUT:
3839 RETVAL 4354 RETVAL
3840 4355
3841void 4356void
3842up (SV *self, int adjust = 1) 4357up (SV *self)
3843 ALIAS:
3844 adjust = 1
3845 CODE: 4358 CODE:
4359 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4360
4361void
4362adjust (SV *self, int adjust)
4363 CODE:
3846 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4364 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3847 4365
3848void 4366void
3849down (...) 4367down (...)
3850 CODE: 4368 CODE:
3851 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4369 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3873 XSRETURN_NO; 4391 XSRETURN_NO;
3874} 4392}
3875 4393
3876void 4394void
3877waiters (SV *self) 4395waiters (SV *self)
3878 PPCODE: 4396 PPCODE:
3879{ 4397{
3880 AV *av = (AV *)SvRV (self); 4398 AV *av = (AV *)SvRV (self);
3881 int wcount = AvFILLp (av) + 1 - 1; 4399 int wcount = AvFILLp (av) + 1 - 1;
3882 4400
3883 if (GIMME_V == G_SCALAR) 4401 if (GIMME_V == G_SCALAR)
… …
3892} 4410}
3893 4411
3894MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4412MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3895 4413
3896void 4414void
3897_may_delete (SV *sem, int count, int extra_refs) 4415_may_delete (SV *sem, int count, unsigned int extra_refs)
3898 PPCODE: 4416 PPCODE:
3899{ 4417{
3900 AV *av = (AV *)SvRV (sem); 4418 AV *av = (AV *)SvRV (sem);
3901 4419
3902 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4420 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3903 && AvFILLp (av) == 0 /* no waiters, just count */ 4421 && AvFILLp (av) == 0 /* no waiters, just count */
3904 && SvIV (AvARRAY (av)[0]) == count) 4422 && SvIV (AvARRAY (av)[0]) == count)
3905 XSRETURN_YES; 4423 XSRETURN_YES;
… …
3926 4444
3927void 4445void
3928broadcast (SV *self) 4446broadcast (SV *self)
3929 CODE: 4447 CODE:
3930{ 4448{
3931 AV *av = (AV *)SvRV (self); 4449 AV *av = (AV *)SvRV (self);
3932 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4450 coro_signal_wake (aTHX_ av, AvFILLp (av));
3933} 4451}
3934 4452
3935void 4453void
3936send (SV *self) 4454send (SV *self)
… …
3944 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4462 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3945} 4463}
3946 4464
3947IV 4465IV
3948awaited (SV *self) 4466awaited (SV *self)
3949 CODE: 4467 CODE:
3950 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4468 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3951 OUTPUT: 4469 OUTPUT:
3952 RETVAL 4470 RETVAL
3953 4471
3954 4472
… …
3959 4477
3960void 4478void
3961_schedule (...) 4479_schedule (...)
3962 CODE: 4480 CODE:
3963{ 4481{
3964 static int incede; 4482 static int incede;
3965 4483
3966 api_cede_notself (aTHX); 4484 api_cede_notself (aTHX);
3967 4485
3968 ++incede; 4486 ++incede;
3969 while (coro_nready >= incede && api_cede (aTHX)) 4487 while (coro_nready >= incede && api_cede (aTHX))
… …
4013 { 4531 {
4014 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; 4532 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4015 coro_old_pp_sselect = 0; 4533 coro_old_pp_sselect = 0;
4016 } 4534 }
4017 4535
4536MODULE = Coro::State PACKAGE = Coro::Util
4537
4538void
4539_exit (int code)
4540 CODE:
4541 _exit (code);
4542
4543NV
4544time ()
4545 CODE:
4546 RETVAL = nvtime (aTHX);
4547 OUTPUT:
4548 RETVAL
4549
4550NV
4551gettimeofday ()
4552 PPCODE:
4553{
4554 UV tv [2];
4555 u2time (aTHX_ tv);
4556 EXTEND (SP, 2);
4557 PUSHs (sv_2mortal (newSVuv (tv [0])));
4558 PUSHs (sv_2mortal (newSVuv (tv [1])));
4559}
4560

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