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Comparing Coro/Coro/State.xs (file contents):
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 UTC vs.
Revision 1.468 by root, Sat Oct 29 19:12:46 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
… …
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "schmorp.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 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
35#ifndef SVs_PADSTALE
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
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp /* deep magic */ 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57# undef CORO_STACKGUARD 82# define HAS_SCOPESTACK_NAME 1
58#endif
59
60#ifndef CORO_STACKGUARD
61# define CORO_STACKGUARD 0
62#endif 83#endif
63 84
64/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
65#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
66# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
76# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
77#endif 98#endif
78 99
79#define IN_DESTRUCT PL_dirty 100#define IN_DESTRUCT PL_dirty
80 101
81#if __GNUC__ >= 3
82# define attribute(x) __attribute__(x)
83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
85#else
86# define attribute(x)
87# define expect(expr,value) (expr)
88# define INLINE static
89#endif
90
91#define expect_false(expr) expect ((expr) != 0, 0)
92#define expect_true(expr) expect ((expr) != 0, 1)
93
94#define NOINLINE attribute ((noinline))
95
96#include "CoroAPI.h" 102#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
98 104
99#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
100# if CORO_PTHREAD 106# if CORO_PTHREAD
… …
110# define CORO_CLOCK_MONOTONIC 1 116# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3 117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif 118# endif
113#endif 119#endif
114 120
121/* perl usually suppressed asserts. for debugging, we sometimes force it to be on */
122#if 0
123# undef NDEBUG
124# include <assert.h>
125#endif
126
115static double (*nvtime)(); /* so why doesn't it take void? */ 127static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]); 128static void (*u2time)(pTHX_ UV ret[2]);
117 129
118/* we hijack an hopefully unused CV flag for our purposes */ 130/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000 131#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX); 132static OP *pp_slf (pTHX);
133static void slf_destroy (pTHX_ struct coro *coro);
121 134
122static U32 cctx_gen; 135static U32 cctx_gen;
123static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
124static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
125static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
… …
133 146
134static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
135static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
136static SV *rv_diehook; 149static SV *rv_diehook;
137static SV *rv_warnhook; 150static SV *rv_warnhook;
138static HV *hv_sig; /* %SIG */
139 151
140/* async_pool helper stuff */ 152/* async_pool helper stuff */
141static SV *sv_pool_rss; 153static SV *sv_pool_rss;
142static SV *sv_pool_size; 154static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */ 155static SV *sv_async_pool_idle; /* description string */
144static AV *av_async_pool; /* idle pool */ 156static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */ 157static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler; 158static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
148 159
149/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
150static SV *sv_activity; 161static SV *sv_activity;
151 162
152/* enable processtime/realtime profiling */ 163/* enable processtime/realtime profiling */
… …
156static char times_valid; 167static char times_valid;
157 168
158static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
159static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
160 171
161enum { 172enum
173{
162 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
163 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
164 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
165 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
166 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
171typedef struct coro_cctx 183typedef struct coro_cctx
172{ 184{
173 struct coro_cctx *next; 185 struct coro_cctx *next;
174 186
175 /* the stack */ 187 /* the stack */
176 void *sptr; 188 struct coro_stack stack;
177 size_t ssize;
178 189
179 /* cpu state */ 190 /* cpu state */
180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 191 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
192#ifndef NDEBUG
181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 193 JMPENV *idle_te; /* same as idle_sp, but for top_env */
194#endif
182 JMPENV *top_env; 195 JMPENV *top_env;
183 coro_context cctx; 196 coro_context cctx;
184 197
185 U32 gen; 198 U32 gen;
186#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
187 int valgrind_id; 200 int valgrind_id;
188#endif 201#endif
189 unsigned char flags; 202 unsigned char flags;
190} coro_cctx; 203} coro_cctx;
191 204
192coro_cctx *cctx_current; /* the currently running cctx */ 205static coro_cctx *cctx_current; /* the currently running cctx */
193 206
194/*****************************************************************************/ 207/*****************************************************************************/
195 208
209static MGVTBL coro_state_vtbl;
210
196enum { 211enum
212{
197 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
198 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
199 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 216 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 217 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
218 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
202}; 219};
203 220
204/* the structure where most of the perl state is stored, overlaid on the cxstack */ 221/* the structure where most of the perl state is stored, overlaid on the cxstack */
205typedef struct 222typedef struct
206{ 223{
207 SV *defsv;
208 AV *defav;
209 SV *errsv;
210 SV *irsgv;
211 HV *hinthv;
212#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
213# include "state.h" 225 #include "state.h"
214#undef VAR
215} perl_slots; 226} perl_slots;
216 227
228/* how many context stack entries do we need for perl_slots */
217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
218 230
219/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
220struct coro { 232struct coro
233{
221 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
222 coro_cctx *cctx; 235 coro_cctx *cctx;
223 236
224 /* ready queue */ 237 /* ready queue */
225 struct coro *next_ready; 238 struct coro *next_ready;
… …
227 /* state data */ 240 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
229 AV *mainstack; 242 AV *mainstack;
230 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
231 244
232 CV *startcv; /* the CV to execute */ 245 CV *startcv; /* the CV to execute */
233 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
234 int refcnt; /* coroutines are refcounted, yes */
235 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
236 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
238 249
239 /* statistics */ 250 /* statistics */
240 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
241 252
242 /* coro process data */ 253 /* coro process data */
243 int prio; 254 int prio;
244 SV *except; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
245 SV *rouse_cb; 256 SV *rouse_cb; /* last rouse callback */
257 AV *on_destroy; /* callbacks or coros to notify on destroy */
258 AV *status; /* the exit status list */
246 259
247 /* async_pool */ 260 /* async_pool */
248 SV *saved_deffh; 261 SV *saved_deffh;
249 SV *invoke_cb; 262 SV *invoke_cb;
250 AV *invoke_av; 263 AV *invoke_av;
251 264
252 /* on_enter/on_leave */ 265 /* on_enter/on_leave */
253 AV *on_enter; 266 AV *on_enter; AV *on_enter_xs;
254 AV *on_leave; 267 AV *on_leave; AV *on_leave_xs;
268
269 /* swap_sv */
270 AV *swap_sv;
255 271
256 /* times */ 272 /* times */
257 coro_ts t_cpu, t_real; 273 coro_ts t_cpu, t_real;
258 274
259 /* linked list */ 275 /* linked list */
… …
263typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
264typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
265 281
266/* the following variables are effectively part of the perl context */ 282/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */ 283/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */ 284/* the main reason we don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
270 286
271/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
272 288
273#define CORO_PRIO_MAX 3 289#define CORO_PRIO_MAX 3
… …
279 295
280/* for Coro.pm */ 296/* for Coro.pm */
281static SV *coro_current; 297static SV *coro_current;
282static SV *coro_readyhook; 298static SV *coro_readyhook;
283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 299static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate; 300static CV *cv_coro_run;
285static struct coro *coro_first; 301static struct coro *coro_first;
286#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
287 303
304/** JIT *********************************************************************/
305
306#if CORO_JIT
307 /* APPLE doesn't have mmap though */
308 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
309 #ifndef CORO_JIT_TYPE
310 #if ECB_AMD64 && CORO_JIT_UNIXY
311 #define CORO_JIT_TYPE "amd64-unix"
312 #elif __i386 && CORO_JIT_UNIXY
313 #define CORO_JIT_TYPE "x86-unix"
314 #endif
315 #endif
316#endif
317
318#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
319 #undef CORO_JIT
320#endif
321
322#if CORO_JIT
323 typedef void (*load_save_perl_slots_type)(perl_slots *);
324 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
325#endif
326
288/** Coro::Select ************************************************************/ 327/** Coro::Select ************************************************************/
289 328
290static OP *(*coro_old_pp_sselect) (pTHX); 329static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select; 330static SV *coro_select_select;
292 331
293/* horrible hack, but if it works... */ 332/* horrible hack, but if it works... */
294static OP * 333static OP *
295coro_pp_sselect (aTHX) 334coro_pp_sselect (pTHX)
296{ 335{
297 dSP; 336 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */ 337 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select); 338 XPUSHs (coro_select_select);
300 PUTBACK; 339 PUTBACK;
… …
303 PL_op->op_flags |= OPf_STACKED; 342 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0; 343 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX); 344 return PL_ppaddr [OP_ENTERSUB](aTHX);
306} 345}
307 346
347/** time stuff **************************************************************/
348
349#ifdef HAS_GETTIMEOFDAY
350
351ecb_inline void
352coro_u2time (pTHX_ UV ret[2])
353{
354 struct timeval tv;
355 gettimeofday (&tv, 0);
356
357 ret [0] = tv.tv_sec;
358 ret [1] = tv.tv_usec;
359}
360
361ecb_inline double
362coro_nvtime (void)
363{
364 struct timeval tv;
365 gettimeofday (&tv, 0);
366
367 return tv.tv_sec + tv.tv_usec * 1e-6;
368}
369
370ecb_inline void
371time_init (pTHX)
372{
373 nvtime = coro_nvtime;
374 u2time = coro_u2time;
375}
376
377#else
378
379ecb_inline void
380time_init (pTHX)
381{
382 SV **svp;
383
384 require_pv ("Time/HiRes.pm");
385
386 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
387
388 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
389 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
390
391 nvtime = INT2PTR (double (*)(), SvIV (*svp));
392
393 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
394 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
395}
396
397#endif
398
308/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
309 400
310static SV * 401static SV * ecb_noinline
311coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
312{ 403{
313#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
315 get_sv (name, create); 406 get_sv (name, create);
316#endif 407#endif
317 return get_sv (name, create); 408 return get_sv (name, create);
318} 409}
319 410
320static AV * 411static AV * ecb_noinline
321coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
322{ 413{
323#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
325 get_av (name, create); 416 get_av (name, create);
326#endif 417#endif
327 return get_av (name, create); 418 return get_av (name, create);
328} 419}
329 420
330static HV * 421static HV * ecb_noinline
331coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
332{ 423{
333#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
334 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
335 get_hv (name, create); 426 get_hv (name, create);
336#endif 427#endif
337 return get_hv (name, create); 428 return get_hv (name, create);
338} 429}
339 430
340INLINE void 431ecb_inline void
341coro_times_update () 432coro_times_update (void)
342{ 433{
343#ifdef coro_clock_gettime 434#ifdef coro_clock_gettime
344 struct timespec ts; 435 struct timespec ts;
345 436
346 ts.tv_sec = ts.tv_nsec = 0; 437 ts.tv_sec = ts.tv_nsec = 0;
… …
358 time_real [0] = tv [0]; 449 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000; 450 time_real [1] = tv [1] * 1000;
360#endif 451#endif
361} 452}
362 453
363INLINE void 454ecb_inline void
364coro_times_add (struct coro *c) 455coro_times_add (struct coro *c)
365{ 456{
366 c->t_real [1] += time_real [1]; 457 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 458 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0]; 459 c->t_real [0] += time_real [0];
… …
370 c->t_cpu [1] += time_cpu [1]; 461 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 462 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0]; 463 c->t_cpu [0] += time_cpu [0];
373} 464}
374 465
375INLINE void 466ecb_inline void
376coro_times_sub (struct coro *c) 467coro_times_sub (struct coro *c)
377{ 468{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 469 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1]; 470 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0]; 471 c->t_real [0] -= time_real [0];
… …
388/* magic glue */ 479/* magic glue */
389 480
390#define CORO_MAGIC_type_cv 26 481#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext 482#define CORO_MAGIC_type_state PERL_MAGIC_ext
392 483
393#define CORO_MAGIC_NN(sv, type) \ 484#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \ 485 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \ 486 ? SvMAGIC (sv) \
396 : mg_find (sv, type)) 487 : mg_find (sv, type))
397 488
398#define CORO_MAGIC(sv, type) \ 489#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \ 490 (ecb_expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \ 491 ? CORO_MAGIC_NN (sv, type) \
401 : 0) 492 : 0)
402 493
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 494#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 495#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405 496
406INLINE struct coro * 497ecb_inline MAGIC *
407SvSTATE_ (pTHX_ SV *coro) 498SvSTATEhv_p (pTHX_ SV *coro)
408{ 499{
409 HV *stash;
410 MAGIC *mg; 500 MAGIC *mg;
411 501
502 if (ecb_expect_true (
503 SvTYPE (coro) == SVt_PVHV
504 && (mg = CORO_MAGIC_state (coro))
505 && mg->mg_virtual == &coro_state_vtbl
506 ))
507 return mg;
508
509 return 0;
510}
511
512ecb_inline struct coro *
513SvSTATE_ (pTHX_ SV *coro_sv)
514{
515 MAGIC *mg;
516
412 if (SvROK (coro)) 517 if (SvROK (coro_sv))
413 coro = SvRV (coro); 518 coro_sv = SvRV (coro_sv);
414 519
415 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 520 mg = SvSTATEhv_p (aTHX_ coro_sv);
521 if (!mg)
416 croak ("Coro::State object required"); 522 croak ("Coro::State object required");
417 523
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr; 524 return (struct coro *)mg->mg_ptr;
428} 525}
429 526
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 527#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431 528
… …
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 531#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435 532
436/*****************************************************************************/ 533/*****************************************************************************/
437/* padlist management and caching */ 534/* padlist management and caching */
438 535
439static AV * 536ecb_inline PADLIST *
440coro_derive_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
441{ 538{
442 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
443 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
444 544
445 newpadlist = newAV (); 545#if NEWPADAPI
546
547 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
548 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
549 while (!PadlistARRAY (padlist)[off - 1])
550 --off;
551
552 Perl_pad_push (aTHX_ padlist, off);
553
554 newpad = PadlistARRAY (padlist)[off];
555 PadlistARRAY (padlist)[off] = 0;
556
557#else
558
559#if PERL_VERSION_ATLEAST (5,10,0)
560 Perl_pad_push (aTHX_ padlist, off);
561#else
562 Perl_pad_push (aTHX_ padlist, off, 1);
563#endif
564
565 newpad = PadlistARRAY (padlist)[off];
566 PadlistMAX (padlist) = off - 1;
567
568#endif
569
570 newPADLIST (newpadlist);
571#if !PERL_VERSION_ATLEAST(5,15,3)
572 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
446 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
447#if PERL_VERSION_ATLEAST (5,10,0)
448 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
449#else
450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
451#endif 574#endif
452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
453 --AvFILLp (padlist);
454 575
455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 576 /* Already extended to 2 elements by newPADLIST. */
456 av_store (newpadlist, 1, (SV *)newpad); 577 PadlistMAX (newpadlist) = 1;
578
579 padnames = PadlistNAMES (padlist);
580 ++PadnamelistREFCNT (padnames);
581 PadlistNAMES (newpadlist) = padnames;
582
583 PadlistARRAY (newpadlist)[1] = newpad;
457 584
458 return newpadlist; 585 return newpadlist;
459} 586}
460 587
461static void 588ecb_inline void
462free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
463{ 590{
464 /* may be during global destruction */ 591 /* may be during global destruction */
465 if (!IN_DESTRUCT) 592 if (!IN_DESTRUCT)
466 { 593 {
467 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
468 595
469 while (i > 0) /* special-case index 0 */ 596 while (i > 0) /* special-case index 0 */
470 { 597 {
471 /* we try to be extra-careful here */ 598 /* we try to be extra-careful here */
472 AV *av = (AV *)AvARRAY (padlist)[i--]; 599 PAD *pad = PadlistARRAY (padlist)[i--];
473 I32 j = AvFILLp (av);
474 600
601 if (pad)
602 {
603 I32 j = PadMAX (pad);
604
475 while (j >= 0) 605 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
477 607
478 AvFILLp (av) = -1; 608 PadMAX (pad) = -1;
479 SvREFCNT_dec (av); 609 SvREFCNT_dec (pad);
610 }
480 } 611 }
481 612
482 SvREFCNT_dec (AvARRAY (padlist)[0]); 613 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
483 614
615#if NEWPADAPI
616 Safefree (PadlistARRAY (padlist));
617 Safefree (padlist);
618#else
484 AvFILLp (padlist) = -1; 619 AvFILLp (padlist) = -1;
620 AvREAL_off (padlist);
485 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
486 } 623 }
487} 624}
488 625
489static int 626static int
490coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
491{ 628{
492 AV *padlist; 629 PADLIST *padlist;
493 AV *av = (AV *)mg->mg_obj; 630 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
631 size_t len = *(size_t *)mg->mg_ptr;
494 632
495 /* perl manages to free our internal AV and _then_ call us */ 633 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT) 634 if (IN_DESTRUCT)
497 return 0; 635 return 0;
498 636
499 /* casting is fun. */ 637 while (len--)
500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
501 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
502
503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
504 639
505 return 0; 640 return 0;
506} 641}
507 642
508static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
509 0, 0, 0, 0, 644 0, 0, 0, 0,
510 coro_cv_free 645 coro_cv_free
511}; 646};
512 647
513/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
514static void 649ecb_inline void
515get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
516{ 651{
517 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
518 AV *av; 653 size_t *lenp;
519 654
520 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
521 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
522 else 657 else
523 { 658 {
524#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
525 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
526 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
… …
532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
533#endif 668#endif
534 } 669 }
535} 670}
536 671
537static void 672ecb_inline void
538put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
539{ 674{
540 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
541 AV *av;
542 676
543 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 679 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
680 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
681 mg->mg_len = 1; /* so mg_free frees mg_ptr */
682 }
683 else
684 Renew (mg->mg_ptr,
685 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
686 char);
545 687
546 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
547
548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
549 av_extend (av, AvFILLp (av) + 1);
550
551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
552} 689}
553 690
554/** load & save, init *******************************************************/ 691/** load & save, init *******************************************************/
692
693ecb_inline void
694swap_sv (SV *a, SV *b)
695{
696 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
697 SV tmp;
698
699 /* swap sv_any */
700 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
701
702 /* swap sv_flags */
703 SvFLAGS (&tmp) = SvFLAGS (a);
704 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
705 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
706
707#if PERL_VERSION_ATLEAST (5,10,0)
708 /* perl 5.10 and later complicates this _quite_ a bit, but it also
709 * is much faster, so no quarrels here. alternatively, we could
710 * sv_upgrade to avoid this.
711 */
712 {
713 /* swap sv_u */
714 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
715
716 /* if SvANY points to the head, we need to adjust the pointers,
717 * as the pointer for a still points to b, and maybe vice versa.
718 */
719 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
720 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
721 svany_in_head_set |= 1 << SVt_NV;
722 #endif
723
724 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
725
726 if (svany_in_head (SvTYPE (a)))
727 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
728
729 if (svany_in_head (SvTYPE (b)))
730 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
731 }
732#endif
733}
734
735/* swap sv heads, at least logically */
736static void
737swap_svs_enter (pTHX_ Coro__State c)
738{
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
742 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
743}
744
745static void
746swap_svs_leave (pTHX_ Coro__State c)
747{
748 int i;
749
750 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
751 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
752}
753
754#define SWAP_SVS_ENTER(coro) \
755 if (ecb_expect_false ((coro)->swap_sv)) \
756 swap_svs_enter (aTHX_ (coro))
757
758#define SWAP_SVS_LEAVE(coro) \
759 if (ecb_expect_false ((coro)->swap_sv)) \
760 swap_svs_leave (aTHX_ (coro))
555 761
556static void 762static void
557on_enterleave_call (pTHX_ SV *cb); 763on_enterleave_call (pTHX_ SV *cb);
558 764
559static void 765static void
… …
562 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
563 c->slot = 0; 769 c->slot = 0;
564 770
565 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
566 772
567 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
568 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
569 GvSV (PL_errgv) = slot->errsv; 775#else
570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
572
573 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
574 # include "state.h" 777 #include "state.h"
575 #undef VAR 778#endif
576 779
577 { 780 {
578 dSP; 781 dSP;
579 782
580 CV *cv; 783 CV *cv;
581 784
582 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
583 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
584 { 787 {
585 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
586 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
587 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
588 } 791 }
589 792
590 PUTBACK; 793 PUTBACK;
591 } 794 }
592 795
593 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
594 CORO_THROW = c->except; 797 CORO_THROW = c->except;
595 798
596 if (expect_false (enable_times)) 799 if (ecb_expect_false (enable_times))
597 { 800 {
598 if (expect_false (!times_valid)) 801 if (ecb_expect_false (!times_valid))
599 coro_times_update (); 802 coro_times_update ();
600 803
601 coro_times_sub (c); 804 coro_times_sub (c);
602 } 805 }
603 806
604 if (expect_false (c->on_enter)) 807 if (ecb_expect_false (c->on_enter))
605 { 808 {
606 int i; 809 int i;
607 810
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 811 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 812 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 } 813 }
814
815 if (ecb_expect_false (c->on_enter_xs))
816 {
817 int i;
818
819 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
820 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
821 }
822
823 SWAP_SVS_ENTER (c);
611} 824}
612 825
613static void 826static void
614save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
615{ 828{
829 SWAP_SVS_LEAVE (c);
830
831 if (ecb_expect_false (c->on_leave_xs))
832 {
833 int i;
834
835 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
836 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
837 }
838
616 if (expect_false (c->on_leave)) 839 if (ecb_expect_false (c->on_leave))
617 { 840 {
618 int i; 841 int i;
619 842
620 for (i = AvFILLp (c->on_leave); i >= 0; --i) 843 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 844 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 } 845 }
623 846
624 times_valid = 0; 847 times_valid = 0;
625 848
626 if (expect_false (enable_times)) 849 if (ecb_expect_false (enable_times))
627 { 850 {
628 coro_times_update (); times_valid = 1; 851 coro_times_update (); times_valid = 1;
629 coro_times_add (c); 852 coro_times_add (c);
630 } 853 }
631 854
… …
645 868
646 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
647 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
648 for (;;) 871 for (;;)
649 { 872 {
650 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
651 { 874 {
652 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
653 876
654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 877 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
655 { 878 {
656 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
657 880
658 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
659 { 882 {
660 EXTEND (SP, 3); 883 EXTEND (SP, 3);
661 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
662 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
663 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
666 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
667 } 890 }
668 } 891 }
669 } 892 }
670 893
671 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
672 break; 895 break;
673 896
674 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
675 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
676 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
678 901
679 PUTBACK; 902 PUTBACK;
680 } 903 }
681 904
682 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
683 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
684 if (SLOT_COUNT >= 1) CXINC;
685 if (SLOT_COUNT >= 2) CXINC;
686 if (SLOT_COUNT >= 3) CXINC;
687 { 907 {
688 unsigned int i; 908 unsigned int i;
909
689 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
690 CXINC; 911 CXINC;
691 } 912
692 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
693 915
694 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
695 917
696 { 918 {
697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
698 920
699 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
700 slot->defsv = DEFSV; 922 save_perl_slots (slot);
701 slot->errsv = ERRSV; 923#else
702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
704
705 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
706 # include "state.h" 925 #include "state.h"
707 #undef VAR 926#endif
708 } 927 }
709} 928}
710 929
711/* 930/*
712 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
… …
718# define coro_init_stacks(thx) init_stacks () 937# define coro_init_stacks(thx) init_stacks ()
719#else 938#else
720static void 939static void
721coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
722{ 941{
723 PL_curstackinfo = new_stackinfo(32, 8); 942 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
724 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
725 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
726 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
727 946
728 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
743#endif 962#endif
744 963
745 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
746 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
747 PL_scopestack_max = 8; 966 PL_scopestack_max = 8;
967#if HAS_SCOPESTACK_NAME
968 New(54,PL_scopestack_name,8,const char*);
969#endif
748 970
749 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
750 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
751 PL_savestack_max = 24; 973 PL_savestack_max = 24;
974#if PERL_VERSION_ATLEAST (5,24,0)
975 /* perl 5.24 moves SS_MAXPUSH optimisation from */
976 /* the header macros to PL_savestack_max */
977 PL_savestack_max -= SS_MAXPUSH;
978#endif
752 979
753#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
754 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
755 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
756 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
780 } 1007 }
781 1008
782 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
783 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
784 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
785 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
786#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
787 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
788#endif 1018#endif
789} 1019}
… …
819 } 1049 }
820 1050
821 return rss; 1051 return rss;
822} 1052}
823 1053
824/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
825
826static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
827static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
828static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
829 1055
830/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
831#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
832#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
833 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
834 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
835#endif 1061#endif
836 1062
1063/* this will be a patched copy of PL_vtbl_sigelem */
1064static MGVTBL coro_sigelem_vtbl;
1065
1066static int ecb_cold
1067coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1068{
1069 char *key = SvPV_nolen ((SV *)name);
1070
1071 /* do what mg_copy normally does */
1072 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1073 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1074
1075 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1076 if (*key == '_'
1077 && (strEQ (key, "__DIE__")
1078 || strEQ (key, "__WARN__")))
1079 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1080
1081 return 1;
1082}
1083
1084/* perl does not have a %SIG vtbl, we provide one so we can override */
1085/* the magic vtbl for the __DIE__ and __WARN__ members */
1086static const MGVTBL coro_sig_vtbl = {
1087 0, 0, 0, 0, 0,
1088 coro_sig_copy
1089};
1090
837/* 1091/*
838 * This overrides the default magic get method of %SIG elements. 1092 * This overrides the default magic get method of %SIG elements.
839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1093 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
840 * and instead of trying to save and restore the hash elements, we just provide 1094 * and instead of trying to save and restore the hash elements (extremely slow),
841 * readback here. 1095 * we just provide our own readback here.
842 */ 1096 */
843static int 1097static int ecb_cold
844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1098coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
845{ 1099{
846 const char *s = MgPV_nolen_const (mg); 1100 const char *s = MgPV_nolen_const (mg);
1101 /* the key must be either __DIE__ or __WARN__ here */
1102 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
847 1103
848 if (*s == '_') 1104 SV *ssv;
849 {
850 SV **svp = 0;
851 1105
852 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
853 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
854
855 if (svp) 1106 if (!*svp)
856 { 1107 ssv = &PL_sv_undef;
857 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1108 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
858 return 0; 1109 ssv = sv_2mortal (newRV_inc (*svp));
859 } 1110 else
860 } 1111 ssv = *svp;
861 1112
862 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1113 sv_setsv (sv, ssv);
1114 return 0;
863} 1115}
864 1116
865static int 1117static int ecb_cold
866coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1118coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
867{ 1119{
868 const char *s = MgPV_nolen_const (mg); 1120 const char *s = MgPV_nolen_const (mg);
1121 /* the key must be either __DIE__ or __WARN__ here */
1122 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
869 1123
870 if (*s == '_')
871 {
872 SV **svp = 0;
873
874 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
875 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
876
877 if (svp)
878 {
879 SV *old = *svp; 1124 SV *old = *svp;
880 *svp = 0; 1125 *svp = 0;
881 SvREFCNT_dec (old); 1126 SvREFCNT_dec (old);
882 return 0; 1127 return 0;
883 }
884 }
885
886 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
887} 1128}
888 1129
889static int 1130static int ecb_cold
890coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1131coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
891{ 1132{
892 const char *s = MgPV_nolen_const (mg); 1133 const char *s = MgPV_nolen_const (mg);
1134 /* the key must be either __DIE__ or __WARN__ here */
1135 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
893 1136
894 if (*s == '_')
895 {
896 SV **svp = 0;
897
898 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
900
901 if (svp)
902 {
903 SV *old = *svp; 1137 SV *old = *svp;
904 *svp = SvOK (sv) ? newSVsv (sv) : 0; 1138 *svp = SvOK (sv) ? newSVsv (sv) : 0;
905 SvREFCNT_dec (old); 1139 SvREFCNT_dec (old);
906 return 0; 1140 return 0;
907 }
908 }
909
910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
911} 1141}
912 1142
913static void 1143static void
914prepare_nop (pTHX_ struct coro_transfer_args *ta) 1144prepare_nop (pTHX_ struct coro_transfer_args *ta)
915{ 1145{
… …
927slf_check_repeat (pTHX_ struct CoroSLF *frame) 1157slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{ 1158{
929 return 1; 1159 return 1;
930} 1160}
931 1161
932static UNOP coro_setup_op; 1162/** coroutine stack handling ************************************************/
933 1163
934static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1164static UNOP init_perl_op;
1165
1166ecb_noinline static void /* noinline to keep it out of the transfer fast path */
935coro_setup (pTHX_ struct coro *coro) 1167init_perl (pTHX_ struct coro *coro)
936{ 1168{
937 /* 1169 /*
938 * emulate part of the perl startup here. 1170 * emulate part of the perl startup here.
939 */ 1171 */
940 coro_init_stacks (aTHX); 1172 coro_init_stacks (aTHX);
… …
947 PL_comppad_name_fill = 0; 1179 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0; 1180 PL_comppad_name_floor = 0;
949 PL_curpm = 0; 1181 PL_curpm = 0;
950 PL_curpad = 0; 1182 PL_curpad = 0;
951 PL_localizing = 0; 1183 PL_localizing = 0;
952 PL_dirty = 0;
953 PL_restartop = 0; 1184 PL_restartop = 0;
954#if PERL_VERSION_ATLEAST (5,10,0) 1185#if PERL_VERSION_ATLEAST (5,10,0)
955 PL_parser = 0; 1186 PL_parser = 0;
956#endif 1187#endif
957 PL_hints = 0; 1188 PL_hints = 0;
958 1189
959 /* recreate the die/warn hooks */ 1190 /* recreate the die/warn hooks */
960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1191 PL_diehook = SvREFCNT_inc (rv_diehook);
961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1192 PL_warnhook = SvREFCNT_inc (rv_warnhook);
962 1193
963 GvSV (PL_defgv) = newSV (0); 1194 GvSV (PL_defgv) = newSV (0);
964 GvAV (PL_defgv) = coro->args; coro->args = 0; 1195 GvAV (PL_defgv) = coro->args; coro->args = 0;
965 GvSV (PL_errgv) = newSV (0); 1196 GvSV (PL_errgv) = newSV (0);
966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1197 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0; 1198 GvHV (PL_hintgv) = newHV ();
1199#if PERL_VERSION_ATLEAST (5,10,0)
1200 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1201#endif
968 PL_rs = newSVsv (GvSV (irsgv)); 1202 PL_rs = newSVsv (GvSV (irsgv));
969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1203 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
970 1204
971 { 1205 {
972 dSP; 1206 dSP;
… …
987 /* this newly created coroutine might be run on an existing cctx which most 1221 /* this newly created coroutine might be run on an existing cctx which most
988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1222 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
989 */ 1223 */
990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1224 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1225 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1226 slf_frame.destroy = 0;
992 1227
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1228 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op; 1229 init_perl_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB; 1230 init_perl_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf; 1231 init_perl_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */ 1232 /* no flags etc. required, as an init function won't be called */
998 1233
999 PL_op = (OP *)&coro_setup_op; 1234 PL_op = (OP *)&init_perl_op;
1000 1235
1001 /* copy throw, in case it was set before coro_setup */ 1236 /* copy throw, in case it was set before init_perl */
1002 CORO_THROW = coro->except; 1237 CORO_THROW = coro->except;
1003 1238
1239 SWAP_SVS_ENTER (coro);
1240
1004 if (expect_false (enable_times)) 1241 if (ecb_expect_false (enable_times))
1005 { 1242 {
1006 coro_times_update (); 1243 coro_times_update ();
1007 coro_times_sub (coro); 1244 coro_times_sub (coro);
1008 } 1245 }
1009} 1246}
… …
1028 dounwind (-1); 1265 dounwind (-1);
1029 } 1266 }
1030} 1267}
1031 1268
1032static void 1269static void
1033coro_destruct_perl (pTHX_ struct coro *coro) 1270destroy_perl (pTHX_ struct coro *coro)
1034{ 1271{
1035 SV *svf [9]; 1272 SV *svf [9];
1036 1273
1037 { 1274 {
1275 SV *old_current = SvRV (coro_current);
1038 struct coro *current = SvSTATE_current; 1276 struct coro *current = SvSTATE (old_current);
1039 1277
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1278 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041 1279
1042 save_perl (aTHX_ current); 1280 save_perl (aTHX_ current);
1281
1282 /* this will cause transfer_check to croak on block*/
1283 SvRV_set (coro_current, (SV *)coro->hv);
1284
1043 load_perl (aTHX_ coro); 1285 load_perl (aTHX_ coro);
1044 1286
1287 /* restore swapped sv's */
1288 SWAP_SVS_LEAVE (coro);
1289
1045 coro_unwind_stacks (aTHX); 1290 coro_unwind_stacks (aTHX);
1291
1046 coro_destruct_stacks (aTHX); 1292 coro_destruct_stacks (aTHX);
1047 1293
1048 // now save some sv's to be free'd later 1294 /* now save some sv's to be free'd later */
1049 svf [0] = GvSV (PL_defgv); 1295 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv); 1296 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv); 1297 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv; 1298 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs; 1299 svf [4] = PL_rs;
… …
1055 svf [6] = (SV *)GvHV (PL_hintgv); 1301 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook; 1302 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook; 1303 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf)); 1304 assert (9 == sizeof (svf) / sizeof (*svf));
1059 1305
1306 SvRV_set (coro_current, old_current);
1307
1060 load_perl (aTHX_ current); 1308 load_perl (aTHX_ current);
1061 } 1309 }
1062 1310
1063 { 1311 {
1064 unsigned int i; 1312 unsigned int i;
… …
1068 1316
1069 SvREFCNT_dec (coro->saved_deffh); 1317 SvREFCNT_dec (coro->saved_deffh);
1070 SvREFCNT_dec (coro->rouse_cb); 1318 SvREFCNT_dec (coro->rouse_cb);
1071 SvREFCNT_dec (coro->invoke_cb); 1319 SvREFCNT_dec (coro->invoke_cb);
1072 SvREFCNT_dec (coro->invoke_av); 1320 SvREFCNT_dec (coro->invoke_av);
1321 SvREFCNT_dec (coro->on_enter_xs);
1322 SvREFCNT_dec (coro->on_leave_xs);
1073 } 1323 }
1074} 1324}
1075 1325
1076INLINE void 1326ecb_inline void
1077free_coro_mortal (pTHX) 1327free_coro_mortal (pTHX)
1078{ 1328{
1079 if (expect_true (coro_mortal)) 1329 if (ecb_expect_true (coro_mortal))
1080 { 1330 {
1081 SvREFCNT_dec (coro_mortal); 1331 SvREFCNT_dec ((SV *)coro_mortal);
1082 coro_mortal = 0; 1332 coro_mortal = 0;
1083 } 1333 }
1084} 1334}
1085 1335
1086static int 1336static int
… …
1140 1390
1141 if (PL_curcop != &PL_compiling) 1391 if (PL_curcop != &PL_compiling)
1142 { 1392 {
1143 SV **cb; 1393 SV **cb;
1144 1394
1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1395 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1146 { 1396 {
1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1397 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1148 1398
1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1399 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1150 { 1400 {
… …
1219 1469
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1470 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221} 1471}
1222 1472
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1473/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1224static void NOINLINE 1474static void ecb_noinline
1225cctx_prepare (pTHX) 1475cctx_prepare (pTHX)
1226{ 1476{
1227 PL_top_env = &PL_start_env; 1477 PL_top_env = &PL_start_env;
1228 1478
1229 if (cctx_current->flags & CC_TRACE) 1479 if (cctx_current->flags & CC_TRACE)
… …
1240 slf_frame.prepare = slf_prepare_set_stacklevel; 1490 slf_frame.prepare = slf_prepare_set_stacklevel;
1241 slf_frame.check = slf_check_set_stacklevel; 1491 slf_frame.check = slf_check_set_stacklevel;
1242} 1492}
1243 1493
1244/* the tail of transfer: execute stuff we can only do after a transfer */ 1494/* the tail of transfer: execute stuff we can only do after a transfer */
1245INLINE void 1495ecb_inline void
1246transfer_tail (pTHX) 1496transfer_tail (pTHX)
1247{ 1497{
1248 free_coro_mortal (aTHX); 1498 free_coro_mortal (aTHX);
1499}
1500
1501/* try to exit the same way perl's main function would do */
1502/* we do not bother resetting the environment or other things *7
1503/* that are not, uhm, essential */
1504/* this obviously also doesn't work when perl is embedded */
1505static void ecb_noinline ecb_cold
1506perlish_exit (pTHX)
1507{
1508 int exitstatus = perl_destruct (PL_curinterp);
1509 perl_free (PL_curinterp);
1510 exit (exitstatus);
1249} 1511}
1250 1512
1251/* 1513/*
1252 * this is a _very_ stripped down perl interpreter ;) 1514 * this is a _very_ stripped down perl interpreter ;)
1253 */ 1515 */
… …
1280 * coro body here, as perl_run destroys these. Likewise, we cannot catch 1542 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1281 * runtime errors here, as this is just a random interpreter, not a thread. 1543 * runtime errors here, as this is just a random interpreter, not a thread.
1282 */ 1544 */
1283 1545
1284 /* 1546 /*
1547 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1548 * requires PL_scopestack_ix, so do it here if required.
1549 */
1550 if (!PL_scopestack_ix)
1551 ENTER;
1552
1553 /*
1285 * If perl-run returns we assume exit() was being called or the coro 1554 * If perl-run returns we assume exit() was being called or the coro
1286 * fell off the end, which seems to be the only valid (non-bug) 1555 * fell off the end, which seems to be the only valid (non-bug)
1287 * reason for perl_run to return. We try to exit by jumping to the 1556 * reason for perl_run to return. We try to mimic whatever perl is normally
1288 * bootstrap-time "top" top_env, as we cannot restore the "main" 1557 * doing in that case. YMMV.
1289 * coroutine as Coro has no such concept.
1290 * This actually isn't valid with the pthread backend, but OSes requiring
1291 * that backend are too broken to do it in a standards-compliant way.
1292 */ 1558 */
1293 PL_top_env = main_top_env; 1559 perlish_exit (aTHX);
1294 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1295 } 1560 }
1296} 1561}
1297 1562
1298static coro_cctx * 1563static coro_cctx *
1299cctx_new () 1564cctx_new (void)
1300{ 1565{
1301 coro_cctx *cctx; 1566 coro_cctx *cctx;
1302 1567
1303 ++cctx_count; 1568 ++cctx_count;
1304 New (0, cctx, 1, coro_cctx); 1569 New (0, cctx, 1, coro_cctx);
… …
1310 return cctx; 1575 return cctx;
1311} 1576}
1312 1577
1313/* create a new cctx only suitable as source */ 1578/* create a new cctx only suitable as source */
1314static coro_cctx * 1579static coro_cctx *
1315cctx_new_empty () 1580cctx_new_empty (void)
1316{ 1581{
1317 coro_cctx *cctx = cctx_new (); 1582 coro_cctx *cctx = cctx_new ();
1318 1583
1319 cctx->sptr = 0; 1584 cctx->stack.sptr = 0;
1320 coro_create (&cctx->cctx, 0, 0, 0, 0); 1585 coro_create (&cctx->cctx, 0, 0, 0, 0);
1321 1586
1322 return cctx; 1587 return cctx;
1323} 1588}
1324 1589
1325/* create a new cctx suitable as destination/running a perl interpreter */ 1590/* create a new cctx suitable as destination/running a perl interpreter */
1326static coro_cctx * 1591static coro_cctx *
1327cctx_new_run () 1592cctx_new_run (void)
1328{ 1593{
1329 coro_cctx *cctx = cctx_new (); 1594 coro_cctx *cctx = cctx_new ();
1330 void *stack_start;
1331 size_t stack_size;
1332 1595
1333#if HAVE_MMAP 1596 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1334 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1335 /* mmap supposedly does allocate-on-write for us */
1336 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1337
1338 if (cctx->sptr != (void *)-1)
1339 {
1340 #if CORO_STACKGUARD
1341 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1342 #endif
1343 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1344 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1345 cctx->flags |= CC_MAPPED;
1346 } 1597 {
1347 else
1348#endif
1349 {
1350 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1351 New (0, cctx->sptr, cctx_stacksize, long);
1352
1353 if (!cctx->sptr)
1354 {
1355 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1598 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1356 _exit (EXIT_FAILURE); 1599 _exit (EXIT_FAILURE);
1357 }
1358
1359 stack_start = cctx->sptr;
1360 stack_size = cctx->ssize;
1361 } 1600 }
1362 1601
1363 #if CORO_USE_VALGRIND
1364 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1365 #endif
1366
1367 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1602 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1368 1603
1369 return cctx; 1604 return cctx;
1370} 1605}
1371 1606
1372static void 1607static void
1373cctx_destroy (coro_cctx *cctx) 1608cctx_destroy (coro_cctx *cctx)
1374{ 1609{
1375 if (!cctx) 1610 if (!cctx)
1376 return; 1611 return;
1377 1612
1378 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? 1613 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1379 1614
1380 --cctx_count; 1615 --cctx_count;
1381 coro_destroy (&cctx->cctx); 1616 coro_destroy (&cctx->cctx);
1382 1617
1383 /* coro_transfer creates new, empty cctx's */ 1618 coro_stack_free (&cctx->stack);
1384 if (cctx->sptr)
1385 {
1386 #if CORO_USE_VALGRIND
1387 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1388 #endif
1389
1390#if HAVE_MMAP
1391 if (cctx->flags & CC_MAPPED)
1392 munmap (cctx->sptr, cctx->ssize);
1393 else
1394#endif
1395 Safefree (cctx->sptr);
1396 }
1397 1619
1398 Safefree (cctx); 1620 Safefree (cctx);
1399} 1621}
1400 1622
1401/* wether this cctx should be destructed */ 1623/* wether this cctx should be destructed */
1402#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1624#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1403 1625
1404static coro_cctx * 1626static coro_cctx *
1405cctx_get (pTHX) 1627cctx_get (pTHX)
1406{ 1628{
1407 while (expect_true (cctx_first)) 1629 while (ecb_expect_true (cctx_first))
1408 { 1630 {
1409 coro_cctx *cctx = cctx_first; 1631 coro_cctx *cctx = cctx_first;
1410 cctx_first = cctx->next; 1632 cctx_first = cctx->next;
1411 --cctx_idle; 1633 --cctx_idle;
1412 1634
1413 if (expect_true (!CCTX_EXPIRED (cctx))) 1635 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1414 return cctx; 1636 return cctx;
1415 1637
1416 cctx_destroy (cctx); 1638 cctx_destroy (cctx);
1417 } 1639 }
1418 1640
… …
1420} 1642}
1421 1643
1422static void 1644static void
1423cctx_put (coro_cctx *cctx) 1645cctx_put (coro_cctx *cctx)
1424{ 1646{
1425 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1647 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1426 1648
1427 /* free another cctx if overlimit */ 1649 /* free another cctx if overlimit */
1428 if (expect_false (cctx_idle >= cctx_max_idle)) 1650 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1429 { 1651 {
1430 coro_cctx *first = cctx_first; 1652 coro_cctx *first = cctx_first;
1431 cctx_first = first->next; 1653 cctx_first = first->next;
1432 --cctx_idle; 1654 --cctx_idle;
1433 1655
… …
1444static void 1666static void
1445transfer_check (pTHX_ struct coro *prev, struct coro *next) 1667transfer_check (pTHX_ struct coro *prev, struct coro *next)
1446{ 1668{
1447 /* TODO: throwing up here is considered harmful */ 1669 /* TODO: throwing up here is considered harmful */
1448 1670
1449 if (expect_true (prev != next)) 1671 if (ecb_expect_true (prev != next))
1450 { 1672 {
1451 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1673 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1452 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1674 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1453 1675
1454 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1676 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1455 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1677 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1456 1678
1457#if !PERL_VERSION_ATLEAST (5,10,0) 1679#if !PERL_VERSION_ATLEAST (5,10,0)
1458 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1680 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1459 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1681 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1460#endif 1682#endif
1461 } 1683 }
1462} 1684}
1463 1685
1464/* always use the TRANSFER macro */ 1686/* always use the TRANSFER macro */
1465static void NOINLINE /* noinline so we have a fixed stackframe */ 1687static void ecb_noinline /* noinline so we have a fixed stackframe */
1466transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1688transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1467{ 1689{
1468 dSTACKLEVEL; 1690 dSTACKLEVEL;
1469 1691
1470 /* sometimes transfer is only called to set idle_sp */ 1692 /* sometimes transfer is only called to set idle_sp */
1471 if (expect_false (!prev)) 1693 if (ecb_expect_false (!prev))
1472 { 1694 {
1473 cctx_current->idle_sp = STACKLEVEL; 1695 cctx_current->idle_sp = STACKLEVEL;
1474 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1696 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1475 } 1697 }
1476 else if (expect_true (prev != next)) 1698 else if (ecb_expect_true (prev != next))
1477 { 1699 {
1478 coro_cctx *cctx_prev; 1700 coro_cctx *cctx_prev;
1479 1701
1480 if (expect_false (prev->flags & CF_NEW)) 1702 if (ecb_expect_false (prev->flags & CF_NEW))
1481 { 1703 {
1482 /* create a new empty/source context */ 1704 /* create a new empty/source context */
1483 prev->flags &= ~CF_NEW; 1705 prev->flags &= ~CF_NEW;
1484 prev->flags |= CF_RUNNING; 1706 prev->flags |= CF_RUNNING;
1485 } 1707 }
… …
1488 next->flags |= CF_RUNNING; 1710 next->flags |= CF_RUNNING;
1489 1711
1490 /* first get rid of the old state */ 1712 /* first get rid of the old state */
1491 save_perl (aTHX_ prev); 1713 save_perl (aTHX_ prev);
1492 1714
1493 if (expect_false (next->flags & CF_NEW)) 1715 if (ecb_expect_false (next->flags & CF_NEW))
1494 { 1716 {
1495 /* need to start coroutine */ 1717 /* need to start coroutine */
1496 next->flags &= ~CF_NEW; 1718 next->flags &= ~CF_NEW;
1497 /* setup coroutine call */ 1719 /* setup coroutine call */
1498 coro_setup (aTHX_ next); 1720 init_perl (aTHX_ next);
1499 } 1721 }
1500 else 1722 else
1501 load_perl (aTHX_ next); 1723 load_perl (aTHX_ next);
1502 1724
1503 /* possibly untie and reuse the cctx */ 1725 /* possibly untie and reuse the cctx */
1504 if (expect_true ( 1726 if (ecb_expect_true (
1505 cctx_current->idle_sp == STACKLEVEL 1727 cctx_current->idle_sp == STACKLEVEL
1506 && !(cctx_current->flags & CC_TRACE) 1728 && !(cctx_current->flags & CC_TRACE)
1507 && !force_cctx 1729 && !force_cctx
1508 )) 1730 ))
1509 { 1731 {
1510 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1732 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1511 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1733 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1512 1734
1513 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1735 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1514 /* without this the next cctx_get might destroy the running cctx while still in use */ 1736 /* without this the next cctx_get might destroy the running cctx while still in use */
1515 if (expect_false (CCTX_EXPIRED (cctx_current))) 1737 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1516 if (expect_true (!next->cctx)) 1738 if (ecb_expect_true (!next->cctx))
1517 next->cctx = cctx_get (aTHX); 1739 next->cctx = cctx_get (aTHX);
1518 1740
1519 cctx_put (cctx_current); 1741 cctx_put (cctx_current);
1520 } 1742 }
1521 else 1743 else
1522 prev->cctx = cctx_current; 1744 prev->cctx = cctx_current;
1523 1745
1524 ++next->usecount; 1746 ++next->usecount;
1525 1747
1526 cctx_prev = cctx_current; 1748 cctx_prev = cctx_current;
1527 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1749 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1528 1750
1529 next->cctx = 0; 1751 next->cctx = 0;
1530 1752
1531 if (expect_false (cctx_prev != cctx_current)) 1753 if (ecb_expect_false (cctx_prev != cctx_current))
1532 { 1754 {
1533 cctx_prev->top_env = PL_top_env; 1755 cctx_prev->top_env = PL_top_env;
1534 PL_top_env = cctx_current->top_env; 1756 PL_top_env = cctx_current->top_env;
1535 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1757 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1536 } 1758 }
… …
1542#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1764#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1543#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1765#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1544 1766
1545/** high level stuff ********************************************************/ 1767/** high level stuff ********************************************************/
1546 1768
1769/* this function is actually Coro, not Coro::State, but we call it from here */
1770/* because it is convenient - but it hasn't been declared yet for that reason */
1547static int 1771static void
1772coro_call_on_destroy (pTHX_ struct coro *coro);
1773
1774static void
1548coro_state_destroy (pTHX_ struct coro *coro) 1775coro_state_destroy (pTHX_ struct coro *coro)
1549{ 1776{
1550 if (coro->flags & CF_DESTROYED) 1777 if (coro->flags & CF_ZOMBIE)
1551 return 0; 1778 return;
1552 1779
1553 if (coro->on_destroy && !PL_dirty)
1554 coro->on_destroy (aTHX_ coro); 1780 slf_destroy (aTHX_ coro);
1555 1781
1556 coro->flags |= CF_DESTROYED; 1782 coro->flags |= CF_ZOMBIE;
1557 1783
1558 if (coro->flags & CF_READY) 1784 if (coro->flags & CF_READY)
1559 { 1785 {
1560 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1786 /* reduce nready, as destroying a ready coro effectively unreadies it */
1561 /* alternative: look through all ready queues and remove the coro */ 1787 /* alternative: look through all ready queues and remove the coro */
1562 --coro_nready; 1788 --coro_nready;
1563 } 1789 }
1564 else 1790 else
1565 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1791 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1792
1793 if (coro->next) coro->next->prev = coro->prev;
1794 if (coro->prev) coro->prev->next = coro->next;
1795 if (coro == coro_first) coro_first = coro->next;
1566 1796
1567 if (coro->mainstack 1797 if (coro->mainstack
1568 && coro->mainstack != main_mainstack 1798 && coro->mainstack != main_mainstack
1569 && coro->slot 1799 && coro->slot
1570 && !PL_dirty) 1800 && !PL_dirty)
1571 coro_destruct_perl (aTHX_ coro); 1801 destroy_perl (aTHX_ coro);
1572 1802
1573 cctx_destroy (coro->cctx); 1803 cctx_destroy (coro->cctx);
1574 SvREFCNT_dec (coro->startcv); 1804 SvREFCNT_dec (coro->startcv);
1575 SvREFCNT_dec (coro->args); 1805 SvREFCNT_dec (coro->args);
1806 SvREFCNT_dec (coro->swap_sv);
1576 SvREFCNT_dec (CORO_THROW); 1807 SvREFCNT_dec (CORO_THROW);
1577 1808
1578 if (coro->next) coro->next->prev = coro->prev; 1809 coro_call_on_destroy (aTHX_ coro);
1579 if (coro->prev) coro->prev->next = coro->next;
1580 if (coro == coro_first) coro_first = coro->next;
1581 1810
1582 return 1; 1811 /* more destruction mayhem in coro_state_free */
1583} 1812}
1584 1813
1585static int 1814static int
1586coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1815coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1587{ 1816{
1588 struct coro *coro = (struct coro *)mg->mg_ptr; 1817 struct coro *coro = (struct coro *)mg->mg_ptr;
1589 mg->mg_ptr = 0; 1818 mg->mg_ptr = 0;
1590 1819
1591 coro->hv = 0;
1592
1593 if (--coro->refcnt < 0)
1594 {
1595 coro_state_destroy (aTHX_ coro); 1820 coro_state_destroy (aTHX_ coro);
1821 SvREFCNT_dec (coro->on_destroy);
1822 SvREFCNT_dec (coro->status);
1823
1596 Safefree (coro); 1824 Safefree (coro);
1597 }
1598 1825
1599 return 0; 1826 return 0;
1600} 1827}
1601 1828
1602static int 1829static int ecb_cold
1603coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1830coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1604{ 1831{
1605 struct coro *coro = (struct coro *)mg->mg_ptr; 1832 /* called when perl clones the current process the slow way (windows process emulation) */
1606 1833 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1607 ++coro->refcnt; 1834 mg->mg_ptr = 0;
1835 mg->mg_virtual = 0;
1608 1836
1609 return 0; 1837 return 0;
1610} 1838}
1611 1839
1612static MGVTBL coro_state_vtbl = { 1840static MGVTBL coro_state_vtbl = {
… …
1637 TRANSFER (ta, 1); 1865 TRANSFER (ta, 1);
1638} 1866}
1639 1867
1640/** Coro ********************************************************************/ 1868/** Coro ********************************************************************/
1641 1869
1642INLINE void 1870ecb_inline void
1643coro_enq (pTHX_ struct coro *coro) 1871coro_enq (pTHX_ struct coro *coro)
1644{ 1872{
1645 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1873 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1646 1874
1647 SvREFCNT_inc_NN (coro->hv); 1875 SvREFCNT_inc_NN (coro->hv);
… …
1649 coro->next_ready = 0; 1877 coro->next_ready = 0;
1650 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1878 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1651 ready [1] = coro; 1879 ready [1] = coro;
1652} 1880}
1653 1881
1654INLINE struct coro * 1882ecb_inline struct coro *
1655coro_deq (pTHX) 1883coro_deq (pTHX)
1656{ 1884{
1657 int prio; 1885 int prio;
1658 1886
1659 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1887 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1712{ 1940{
1713 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1941 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1714} 1942}
1715 1943
1716/* expects to own a reference to next->hv */ 1944/* expects to own a reference to next->hv */
1717INLINE void 1945ecb_inline void
1718prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1946prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1719{ 1947{
1720 SV *prev_sv = SvRV (coro_current); 1948 SV *prev_sv = SvRV (coro_current);
1721 1949
1722 ta->prev = SvSTATE_hv (prev_sv); 1950 ta->prev = SvSTATE_hv (prev_sv);
… …
1735{ 1963{
1736 for (;;) 1964 for (;;)
1737 { 1965 {
1738 struct coro *next = coro_deq (aTHX); 1966 struct coro *next = coro_deq (aTHX);
1739 1967
1740 if (expect_true (next)) 1968 if (ecb_expect_true (next))
1741 { 1969 {
1742 /* cannot transfer to destroyed coros, skip and look for next */ 1970 /* cannot transfer to destroyed coros, skip and look for next */
1743 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1971 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1744 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1972 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1745 else 1973 else
1746 { 1974 {
1747 next->flags &= ~CF_READY; 1975 next->flags &= ~CF_READY;
1748 --coro_nready; 1976 --coro_nready;
… …
1755 { 1983 {
1756 /* nothing to schedule: call the idle handler */ 1984 /* nothing to schedule: call the idle handler */
1757 if (SvROK (sv_idle) 1985 if (SvROK (sv_idle)
1758 && SvOBJECT (SvRV (sv_idle))) 1986 && SvOBJECT (SvRV (sv_idle)))
1759 { 1987 {
1988 if (SvRV (sv_idle) == SvRV (coro_current))
1989 {
1990 require_pv ("Carp");
1991
1992 {
1993 dSP;
1994
1995 ENTER;
1996 SAVETMPS;
1997
1998 PUSHMARK (SP);
1999 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2000 PUTBACK;
2001 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2002
2003 FREETMPS;
2004 LEAVE;
2005 }
2006 }
2007
1760 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2008 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1761 api_ready (aTHX_ SvRV (sv_idle)); 2009 api_ready (aTHX_ SvRV (sv_idle));
1762 --coro_nready; 2010 --coro_nready;
1763 } 2011 }
1764 else 2012 else
1765 { 2013 {
2014 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1766 dSP; 2015 dSP;
1767 2016
1768 ENTER; 2017 ENTER;
1769 SAVETMPS; 2018 SAVETMPS;
1770 2019
… …
1777 } 2026 }
1778 } 2027 }
1779 } 2028 }
1780} 2029}
1781 2030
1782INLINE void 2031ecb_inline void
1783prepare_cede (pTHX_ struct coro_transfer_args *ta) 2032prepare_cede (pTHX_ struct coro_transfer_args *ta)
1784{ 2033{
1785 api_ready (aTHX_ coro_current); 2034 api_ready (aTHX_ coro_current);
1786 prepare_schedule (aTHX_ ta); 2035 prepare_schedule (aTHX_ ta);
1787} 2036}
1788 2037
1789INLINE void 2038ecb_inline void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2039prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{ 2040{
1792 SV *prev = SvRV (coro_current); 2041 SV *prev = SvRV (coro_current);
1793 2042
1794 if (coro_nready) 2043 if (coro_nready)
… …
1824{ 2073{
1825 struct coro_transfer_args ta; 2074 struct coro_transfer_args ta;
1826 2075
1827 prepare_cede (aTHX_ &ta); 2076 prepare_cede (aTHX_ &ta);
1828 2077
1829 if (expect_true (ta.prev != ta.next)) 2078 if (ecb_expect_true (ta.prev != ta.next))
1830 { 2079 {
1831 TRANSFER (ta, 1); 2080 TRANSFER (ta, 1);
1832 return 1; 2081 return 1;
1833 } 2082 }
1834 else 2083 else
… …
1877 coro->slot->runops = RUNOPS_DEFAULT; 2126 coro->slot->runops = RUNOPS_DEFAULT;
1878 } 2127 }
1879} 2128}
1880 2129
1881static void 2130static void
2131coro_push_av (pTHX_ AV *av, I32 gimme_v)
2132{
2133 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2134 {
2135 dSP;
2136
2137 if (gimme_v == G_SCALAR)
2138 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2139 else
2140 {
2141 int i;
2142 EXTEND (SP, AvFILLp (av) + 1);
2143
2144 for (i = 0; i <= AvFILLp (av); ++i)
2145 PUSHs (AvARRAY (av)[i]);
2146 }
2147
2148 PUTBACK;
2149 }
2150}
2151
2152static void
2153coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2154{
2155 if (!coro->on_destroy)
2156 coro->on_destroy = newAV ();
2157
2158 av_push (coro->on_destroy, cb);
2159}
2160
2161static void
2162slf_destroy_join (pTHX_ struct CoroSLF *frame)
2163{
2164 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2165}
2166
2167static int
2168slf_check_join (pTHX_ struct CoroSLF *frame)
2169{
2170 struct coro *coro = (struct coro *)frame->data;
2171
2172 if (!coro->status)
2173 return 1;
2174
2175 frame->destroy = 0;
2176
2177 coro_push_av (aTHX_ coro->status, GIMME_V);
2178
2179 SvREFCNT_dec ((SV *)coro->hv);
2180
2181 return 0;
2182}
2183
2184static void
2185slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2186{
2187 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2188
2189 if (items > 1)
2190 croak ("join called with too many arguments");
2191
2192 if (coro->status)
2193 frame->prepare = prepare_nop;
2194 else
2195 {
2196 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2197 frame->prepare = prepare_schedule;
2198 }
2199
2200 frame->check = slf_check_join;
2201 frame->destroy = slf_destroy_join;
2202 frame->data = (void *)coro;
2203 SvREFCNT_inc (coro->hv);
2204}
2205
2206static void
1882coro_call_on_destroy (pTHX_ struct coro *coro) 2207coro_call_on_destroy (pTHX_ struct coro *coro)
1883{ 2208{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2209 AV *od = coro->on_destroy;
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886 2210
1887 if (on_destroyp) 2211 if (!od)
1888 { 2212 return;
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890 2213
2214 coro->on_destroy = 0;
2215 sv_2mortal ((SV *)od);
2216
1891 while (AvFILLp (on_destroy) >= 0) 2217 while (AvFILLp (od) >= 0)
2218 {
2219 SV *cb = sv_2mortal (av_pop (od));
2220
2221 /* coro hv's (and only hv's at the moment) are supported as well */
2222 if (SvSTATEhv_p (aTHX_ cb))
2223 api_ready (aTHX_ cb);
2224 else
1892 { 2225 {
1893 dSP; /* don't disturb outer sp */ 2226 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP); 2227 PUSHMARK (SP);
1897 2228
1898 if (statusp) 2229 if (coro->status)
1899 { 2230 {
1900 int i; 2231 PUTBACK;
1901 AV *status = (AV *)SvRV (*statusp); 2232 coro_push_av (aTHX_ coro->status, G_ARRAY);
1902 EXTEND (SP, AvFILLp (status) + 1); 2233 SPAGAIN;
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 } 2234 }
1907 2235
1908 PUTBACK; 2236 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2237 call_sv (cb, G_VOID | G_DISCARD);
1910 } 2238 }
1911 } 2239 }
1912} 2240}
1913 2241
1914static void 2242static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2243coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1916{ 2244{
1917 int i; 2245 AV *av;
1918 HV *hv = (HV *)SvRV (coro_current); 2246
1919 AV *av = newAV (); 2247 if (coro->status)
2248 {
2249 av = coro->status;
2250 av_clear (av);
2251 }
2252 else
2253 av = coro->status = newAV ();
1920 2254
1921 /* items are actually not so common, so optimise for this case */ 2255 /* items are actually not so common, so optimise for this case */
1922 if (items) 2256 if (items)
1923 { 2257 {
2258 int i;
2259
1924 av_extend (av, items - 1); 2260 av_extend (av, items - 1);
1925 2261
1926 for (i = 0; i < items; ++i) 2262 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i])); 2263 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 } 2264 }
2265}
1929 2266
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2267static void
1931 2268slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2269{
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2270 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager); 2271 api_ready (aTHX_ sv_manager);
1934 2272
1935 frame->prepare = prepare_schedule; 2273 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat; 2274 frame->check = slf_check_repeat;
1937 2275
1938 /* as a minor optimisation, we could unwind all stacks here */ 2276 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */ 2277 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/ 2278 /*coro_unwind_stacks (aTHX);*/
2279}
2280
2281static void
2282slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 HV *coro_hv = (HV *)SvRV (coro_current);
2285
2286 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2287 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2288}
2289
2290static void
2291slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2292{
2293 HV *coro_hv;
2294 struct coro *coro;
2295
2296 if (items <= 0)
2297 croak ("Coro::cancel called without coro object,");
2298
2299 coro = SvSTATE (arg [0]);
2300 coro_hv = coro->hv;
2301
2302 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2303
2304 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2305 {
2306 /* coro currently busy cancelling something, so just notify it */
2307 coro->slf_frame.data = (void *)coro;
2308
2309 frame->prepare = prepare_nop;
2310 frame->check = slf_check_nop;
2311 }
2312 else if (coro_hv == (HV *)SvRV (coro_current))
2313 {
2314 /* cancelling the current coro is allowed, and equals terminate */
2315 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2316 }
2317 else
2318 {
2319 struct coro *self = SvSTATE_current;
2320
2321 if (!self)
2322 croak ("Coro::cancel called outside of thread content,");
2323
2324 /* otherwise we cancel directly, purely for speed reasons
2325 * unfortunately, this requires some magic trickery, as
2326 * somebody else could cancel us, so we have to fight the cancellation.
2327 * this is ugly, and hopefully fully worth the extra speed.
2328 * besides, I can't get the slow-but-safe version working...
2329 */
2330 slf_frame.data = 0;
2331 self->flags |= CF_NOCANCEL;
2332 coro_state_destroy (aTHX_ coro);
2333 self->flags &= ~CF_NOCANCEL;
2334
2335 if (slf_frame.data)
2336 {
2337 /* while we were busy we have been cancelled, so terminate */
2338 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2339 }
2340 else
2341 {
2342 frame->prepare = prepare_nop;
2343 frame->check = slf_check_nop;
2344 }
2345 }
2346}
2347
2348static int
2349slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2350{
2351 frame->prepare = 0;
2352 coro_unwind_stacks (aTHX);
2353
2354 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2355
2356 return 1;
2357}
2358
2359static int
2360safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2361{
2362 if (coro->cctx)
2363 croak ("coro inside C callback, unable to cancel at this time, caught");
2364
2365 if (coro->flags & CF_NEW)
2366 {
2367 coro_set_status (aTHX_ coro, arg, items);
2368 coro_state_destroy (aTHX_ coro);
2369 }
2370 else
2371 {
2372 if (!coro->slf_frame.prepare)
2373 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2374
2375 slf_destroy (aTHX_ coro);
2376
2377 coro_set_status (aTHX_ coro, arg, items);
2378 coro->slf_frame.prepare = prepare_nop;
2379 coro->slf_frame.check = slf_check_safe_cancel;
2380
2381 api_ready (aTHX_ (SV *)coro->hv);
2382 }
2383
2384 return 1;
1941} 2385}
1942 2386
1943/*****************************************************************************/ 2387/*****************************************************************************/
1944/* async pool handler */ 2388/* async pool handler */
1945 2389
… …
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2420slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{ 2421{
1978 HV *hv = (HV *)SvRV (coro_current); 2422 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv); 2423 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980 2424
1981 if (expect_true (coro->saved_deffh)) 2425 if (ecb_expect_true (coro->saved_deffh))
1982 { 2426 {
1983 /* subsequent iteration */ 2427 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2428 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0; 2429 coro->saved_deffh = 0;
1986 2430
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2431 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2432 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 { 2433 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2434 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1991 coro->invoke_av = newAV (); 2435 return;
1992
1993 frame->prepare = prepare_nop;
1994 } 2436 }
1995 else 2437 else
1996 { 2438 {
1997 av_clear (GvAV (PL_defgv)); 2439 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2440 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999 2441
2442 if (ecb_expect_false (coro->swap_sv))
2443 {
2444 SWAP_SVS_LEAVE (coro);
2445 SvREFCNT_dec_NN (coro->swap_sv);
2446 coro->swap_sv = 0;
2447 }
2448
2000 coro->prio = 0; 2449 coro->prio = 0;
2001 2450
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2451 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0); 2452 api_trace (aTHX_ coro_current, 0);
2004 2453
2005 frame->prepare = prepare_schedule; 2454 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv)); 2455 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 } 2456 }
… …
2048 2497
2049static int 2498static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2499slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{ 2500{
2052 SV *data = (SV *)frame->data; 2501 SV *data = (SV *)frame->data;
2053 2502
2054 if (CORO_THROW) 2503 if (CORO_THROW)
2055 return 0; 2504 return 0;
2056 2505
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2506 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1; 2507 return 1;
… …
2094 cb = sv_2mortal (coro->rouse_cb); 2543 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0; 2544 coro->rouse_cb = 0;
2096 } 2545 }
2097 2546
2098 if (!SvROK (cb) 2547 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV 2548 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2549 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,"); 2550 croak ("Coro::rouse_wait called with illegal callback argument,");
2102 2551
2103 { 2552 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2553 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2221static void 2670static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2671slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{ 2672{
2224 frame->prepare = prepare_cede_notself; 2673 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop; 2674 frame->check = slf_check_nop;
2675}
2676
2677/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2678static void
2679slf_destroy (pTHX_ struct coro *coro)
2680{
2681 struct CoroSLF frame = coro->slf_frame;
2682
2683 /*
2684 * The on_destroy below most likely is from an SLF call.
2685 * Since by definition the SLF call will not finish when we destroy
2686 * the coro, we will have to force-finish it here, otherwise
2687 * cleanup functions cannot call SLF functions.
2688 */
2689 coro->slf_frame.prepare = 0;
2690
2691 /* this callback is reserved for slf functions needing to do cleanup */
2692 if (frame.destroy && frame.prepare && !PL_dirty)
2693 frame.destroy (aTHX_ &frame);
2226} 2694}
2227 2695
2228/* 2696/*
2229 * these not obviously related functions are all rolled into one 2697 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same 2698 * function to increase chances that they all will call transfer with the same
… …
2237 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2705 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238 2706
2239 /* set up the slf frame, unless it has already been set-up */ 2707 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */ 2708 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */ 2709 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare)) 2710 if (ecb_expect_true (!slf_frame.prepare))
2243 { 2711 {
2244 /* first iteration */ 2712 /* first iteration */
2245 dSP; 2713 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1; 2714 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */ 2715 int items = SP - arg; /* args without function object */
… …
2288 while (slf_frame.check (aTHX_ &slf_frame)); 2756 while (slf_frame.check (aTHX_ &slf_frame));
2289 2757
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2758 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291 2759
2292 /* exception handling */ 2760 /* exception handling */
2293 if (expect_false (CORO_THROW)) 2761 if (ecb_expect_false (CORO_THROW))
2294 { 2762 {
2295 SV *exception = sv_2mortal (CORO_THROW); 2763 SV *exception = sv_2mortal (CORO_THROW);
2296 2764
2297 CORO_THROW = 0; 2765 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception); 2766 sv_setsv (ERRSV, exception);
2299 croak (0); 2767 croak (0);
2300 } 2768 }
2301 2769
2302 /* return value handling - mostly like entersub */ 2770 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */ 2771 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR) 2772 if (GIMME_V == G_SCALAR
2773 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2305 { 2774 {
2306 dSP; 2775 dSP;
2307 SV **bot = PL_stack_base + checkmark; 2776 SV **bot = PL_stack_base + checkmark;
2308 2777
2309 if (sp == bot) /* too few, push undef */ 2778 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef; 2779 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */ 2780 else /* too many, take last one */
2312 bot [1] = *sp; 2781 bot [1] = *sp;
2313 2782
2314 SP = bot + 1; 2783 SP = bot + 1;
2315 2784
2316 PUTBACK; 2785 PUTBACK;
… …
2349 if (PL_op->op_flags & OPf_STACKED) 2818 if (PL_op->op_flags & OPf_STACKED)
2350 { 2819 {
2351 if (items > slf_arga) 2820 if (items > slf_arga)
2352 { 2821 {
2353 slf_arga = items; 2822 slf_arga = items;
2354 free (slf_argv); 2823 Safefree (slf_argv);
2355 slf_argv = malloc (slf_arga * sizeof (SV *)); 2824 New (0, slf_argv, slf_arga, SV *);
2356 } 2825 }
2357 2826
2358 slf_argc = items; 2827 slf_argc = items;
2359 2828
2360 for (i = 0; i < items; ++i) 2829 for (i = 0; i < items; ++i)
… …
2414{ 2883{
2415 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); 2884 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2416 on_enterleave_call (aTHX_ sv_2mortal (cb)); 2885 on_enterleave_call (aTHX_ sv_2mortal (cb));
2417} 2886}
2418 2887
2888static void
2889enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2890{
2891 if (!hook)
2892 return;
2893
2894 if (!*avp)
2895 {
2896 *avp = newAV ();
2897 AvREAL_off (*avp);
2898 }
2899
2900 av_push (*avp, (SV *)hook);
2901 av_push (*avp, (SV *)arg);
2902}
2903
2904static void
2905enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2906{
2907 AV *av = *avp;
2908 int i;
2909
2910 if (!av)
2911 return;
2912
2913 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2914 if (AvARRAY (av)[i] == (SV *)hook)
2915 {
2916 if (execute)
2917 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2918
2919 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2920 av_pop (av);
2921 av_pop (av);
2922 break;
2923 }
2924
2925 if (AvFILLp (av) >= 0)
2926 {
2927 *avp = 0;
2928 SvREFCNT_dec_NN (av);
2929 }
2930}
2931
2932static void
2933api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2934{
2935 struct coro *coro = SvSTATE (coro_sv);
2936
2937 if (SvSTATE_current == coro)
2938 if (enter)
2939 enter (aTHX_ enter_arg);
2940
2941 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2942 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2943}
2944
2945static void
2946api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2947{
2948 struct coro *coro = SvSTATE (coro_sv);
2949
2950 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2951 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2952}
2953
2954static void
2955savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2956{
2957 struct coro *coro = SvSTATE_current;
2958
2959 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2960}
2961
2962static void
2963savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2964{
2965 struct coro *coro = SvSTATE_current;
2966
2967 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2968}
2969
2970static void
2971api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2972{
2973 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2974
2975 /* this ought to be much cheaper than malloc + a single destructor call */
2976 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2977 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2978}
2979
2419/*****************************************************************************/ 2980/*****************************************************************************/
2420/* PerlIO::cede */ 2981/* PerlIO::cede */
2421 2982
2422typedef struct 2983typedef struct
2423{ 2984{
2424 PerlIOBuf base; 2985 PerlIOBuf base;
2425 NV next, every; 2986 NV next, every;
2426} PerlIOCede; 2987} PerlIOCede;
2427 2988
2428static IV 2989static IV ecb_cold
2429PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2990PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2430{ 2991{
2431 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2992 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2432 2993
2433 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2994 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2434 self->next = nvtime () + self->every; 2995 self->next = nvtime () + self->every;
2435 2996
2436 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2997 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2437} 2998}
2438 2999
2439static SV * 3000static SV * ecb_cold
2440PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3001PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2441{ 3002{
2442 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3003 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2443 3004
2444 return newSVnv (self->every); 3005 return newSVnv (self->every);
… …
2551 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3112 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2552 PUTBACK; 3113 PUTBACK;
2553 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3114 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2554 } 3115 }
2555 3116
2556 SvREFCNT_dec (cb); 3117 SvREFCNT_dec_NN (cb);
2557 } 3118 }
2558} 3119}
2559 3120
2560static void 3121static void
2561coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3122coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2562{ 3123{
2563 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3124 /* call $sem->adjust (0) to possibly wake up some other waiters */
2564 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3125 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2565} 3126}
2566 3127
2567static int 3128static int
2568slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3129slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2569{ 3130{
2570 AV *av = (AV *)frame->data; 3131 AV *av = (AV *)frame->data;
2571 SV *count_sv = AvARRAY (av)[0]; 3132 SV *count_sv = AvARRAY (av)[0];
3133 SV *coro_hv = SvRV (coro_current);
3134
3135 frame->destroy = 0;
2572 3136
2573 /* if we are about to throw, don't actually acquire the lock, just throw */ 3137 /* if we are about to throw, don't actually acquire the lock, just throw */
2574 if (CORO_THROW) 3138 if (ecb_expect_false (CORO_THROW))
3139 {
3140 /* we still might be responsible for the semaphore, so wake up others */
3141 coro_semaphore_adjust (aTHX_ av, 0);
3142
2575 return 0; 3143 return 0;
3144 }
2576 else if (SvIVX (count_sv) > 0) 3145 else if (SvIVX (count_sv) > 0)
2577 { 3146 {
2578 SvSTATE_current->on_destroy = 0;
2579
2580 if (acquire) 3147 if (acquire)
2581 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3148 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2582 else 3149 else
2583 coro_semaphore_adjust (aTHX_ av, 0); 3150 coro_semaphore_adjust (aTHX_ av, 0);
2584 3151
… …
2588 { 3155 {
2589 int i; 3156 int i;
2590 /* if we were woken up but can't down, we look through the whole */ 3157 /* if we were woken up but can't down, we look through the whole */
2591 /* waiters list and only add us if we aren't in there already */ 3158 /* waiters list and only add us if we aren't in there already */
2592 /* this avoids some degenerate memory usage cases */ 3159 /* this avoids some degenerate memory usage cases */
2593 3160 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2594 for (i = 1; i <= AvFILLp (av); ++i)
2595 if (AvARRAY (av)[i] == SvRV (coro_current)) 3161 if (AvARRAY (av)[i] == coro_hv)
2596 return 1; 3162 return 1;
2597 3163
2598 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3164 av_push (av, SvREFCNT_inc (coro_hv));
2599 return 1; 3165 return 1;
2600 } 3166 }
2601} 3167}
2602 3168
2603static int 3169static int
… …
2626 { 3192 {
2627 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3193 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2628 3194
2629 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3195 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2630 frame->prepare = prepare_schedule; 3196 frame->prepare = prepare_schedule;
2631
2632 /* to avoid race conditions when a woken-up coro gets terminated */ 3197 /* to avoid race conditions when a woken-up coro gets terminated */
2633 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3198 /* we arrange for a temporary on_destroy that calls adjust (0) */
2634 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3199 frame->destroy = coro_semaphore_destroy;
2635 } 3200 }
2636} 3201}
2637 3202
2638static void 3203static void
2639slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3204slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2697 { 3262 {
2698 api_ready (aTHX_ cb); 3263 api_ready (aTHX_ cb);
2699 sv_setiv (cb, 0); /* signal waiter */ 3264 sv_setiv (cb, 0); /* signal waiter */
2700 } 3265 }
2701 3266
2702 SvREFCNT_dec (cb); 3267 SvREFCNT_dec_NN (cb);
2703 3268
2704 --count; 3269 --count;
2705 } 3270 }
2706} 3271}
2707 3272
… …
2721 { 3286 {
2722 SV *cb_cv = s_get_cv_croak (arg [1]); 3287 SV *cb_cv = s_get_cv_croak (arg [1]);
2723 av_push (av, SvREFCNT_inc_NN (cb_cv)); 3288 av_push (av, SvREFCNT_inc_NN (cb_cv));
2724 3289
2725 if (SvIVX (AvARRAY (av)[0])) 3290 if (SvIVX (AvARRAY (av)[0]))
2726 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ 3291 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2727 3292
2728 frame->prepare = prepare_nop; 3293 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop; 3294 frame->check = slf_check_nop;
2730 } 3295 }
2731 else if (SvIVX (AvARRAY (av)[0])) 3296 else if (SvIVX (AvARRAY (av)[0]))
… …
2792 } 3357 }
2793 3358
2794 av_push (state, data_sv); 3359 av_push (state, data_sv);
2795 3360
2796 api_ready (aTHX_ coro); 3361 api_ready (aTHX_ coro);
2797 SvREFCNT_dec (coro); 3362 SvREFCNT_dec_NN (coro);
2798 SvREFCNT_dec ((AV *)state); 3363 SvREFCNT_dec_NN ((AV *)state);
2799} 3364}
2800 3365
2801static int 3366static int
2802slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3367slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2803{ 3368{
… …
2808 /* it quickly returns */ 3373 /* it quickly returns */
2809 if (CORO_THROW) 3374 if (CORO_THROW)
2810 return 0; 3375 return 0;
2811 3376
2812 /* one element that is an RV? repeat! */ 3377 /* one element that is an RV? repeat! */
2813 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3378 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2814 return 1; 3379 return 1;
2815 3380
2816 /* restore status */ 3381 /* restore status */
2817 { 3382 {
2818 SV *data_sv = av_pop (state); 3383 SV *data_sv = av_pop (state);
… …
2821 errno = data->errorno; 3386 errno = data->errorno;
2822 PL_laststype = data->laststype; 3387 PL_laststype = data->laststype;
2823 PL_laststatval = data->laststatval; 3388 PL_laststatval = data->laststatval;
2824 PL_statcache = data->statcache; 3389 PL_statcache = data->statcache;
2825 3390
2826 SvREFCNT_dec (data_sv); 3391 SvREFCNT_dec_NN (data_sv);
2827 } 3392 }
2828 3393
2829 /* push result values */ 3394 /* push result values */
2830 { 3395 {
2831 dSP; 3396 dSP;
… …
2857 dSP; 3422 dSP;
2858 3423
2859 static SV *prio_cv; 3424 static SV *prio_cv;
2860 static SV *prio_sv; 3425 static SV *prio_sv;
2861 3426
2862 if (expect_false (!prio_cv)) 3427 if (ecb_expect_false (!prio_cv))
2863 { 3428 {
2864 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3429 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2865 prio_sv = newSViv (0); 3430 prio_sv = newSViv (0);
2866 } 3431 }
2867 3432
… …
2893 /* now call the AIO function - we assume our request is uncancelable */ 3458 /* now call the AIO function - we assume our request is uncancelable */
2894 PUTBACK; 3459 PUTBACK;
2895 call_sv ((SV *)req, G_VOID | G_DISCARD); 3460 call_sv ((SV *)req, G_VOID | G_DISCARD);
2896 } 3461 }
2897 3462
2898 /* now that the requets is going, we loop toll we have a result */ 3463 /* now that the request is going, we loop till we have a result */
2899 frame->data = (void *)state; 3464 frame->data = (void *)state;
2900 frame->prepare = prepare_schedule; 3465 frame->prepare = prepare_schedule;
2901 frame->check = slf_check_aio_req; 3466 frame->check = slf_check_aio_req;
2902} 3467}
2903 3468
… …
2918#endif 3483#endif
2919 3484
2920/*****************************************************************************/ 3485/*****************************************************************************/
2921 3486
2922static SV * 3487static SV *
2923coro_new (HV *stash, SV **argv, int argc, int is_coro) 3488coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2924{ 3489{
2925 SV *coro_sv; 3490 SV *coro_sv;
2926 struct coro *coro; 3491 struct coro *coro;
2927 MAGIC *mg; 3492 MAGIC *mg;
2928 HV *hv; 3493 HV *hv;
… …
2973 } 3538 }
2974 3539
2975 return coro_sv; 3540 return coro_sv;
2976} 3541}
2977 3542
3543#ifndef __cplusplus
3544ecb_cold XS(boot_Coro__State);
3545#endif
3546
3547#if CORO_JIT
3548
3549static void ecb_noinline ecb_cold
3550pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3551{
3552 dSP;
3553 AV *av = newAV ();
3554
3555 av_store (av, 3, newSVuv (d));
3556 av_store (av, 2, newSVuv (c));
3557 av_store (av, 1, newSVuv (b));
3558 av_store (av, 0, newSVuv (a));
3559
3560 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3561
3562 PUTBACK;
3563}
3564
3565static void ecb_noinline ecb_cold
3566jit_init (pTHX)
3567{
3568 dSP;
3569 SV *load, *save;
3570 char *map_base;
3571 char *load_ptr, *save_ptr;
3572 STRLEN load_len, save_len, map_len;
3573 int count;
3574
3575 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3576
3577 PUSHMARK (SP);
3578 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3579 #include "state.h"
3580 count = call_pv ("Coro::State::_jit", G_ARRAY);
3581 SPAGAIN;
3582
3583 save = POPs; save_ptr = SvPVbyte (save, save_len);
3584 load = POPs; load_ptr = SvPVbyte (load, load_len);
3585
3586 map_len = load_len + save_len + 16;
3587
3588 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3589
3590 if (map_base == (char *)MAP_FAILED)
3591 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3592
3593 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3594
3595 load_perl_slots = (load_save_perl_slots_type)map_base;
3596 memcpy (map_base, load_ptr, load_len);
3597
3598 map_base += (load_len + 15) & ~15;
3599
3600 save_perl_slots = (load_save_perl_slots_type)map_base;
3601 memcpy (map_base, save_ptr, save_len);
3602
3603 /* we are good citizens and try to make the page read-only, so the evil evil */
3604 /* hackers might have it a bit more difficult */
3605 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3606
3607 PUTBACK;
3608 eval_pv ("undef &Coro::State::_jit", 1);
3609}
3610
3611#endif
3612
2978MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3613MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2979 3614
2980PROTOTYPES: DISABLE 3615PROTOTYPES: DISABLE
2981 3616
2982BOOT: 3617BOOT:
2983{ 3618{
3619#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3620#include "state.h"
2984#ifdef USE_ITHREADS 3621#ifdef USE_ITHREADS
2985# if CORO_PTHREAD 3622# if CORO_PTHREAD
2986 coro_thx = PERL_GET_CONTEXT; 3623 coro_thx = PERL_GET_CONTEXT;
2987# endif 3624# endif
2988#endif 3625#endif
2989 BOOT_PAGESIZE; 3626 /* perl defines these to check for existance first, but why it doesn't */
3627 /* just create them one at init time is not clear to me, except for */
3628 /* programs trying to delete them, but... */
3629 /* anyway, we declare this as invalid and make sure they are initialised here */
3630 DEFSV;
3631 ERRSV;
2990 3632
2991 cctx_current = cctx_new_empty (); 3633 cctx_current = cctx_new_empty ();
2992 3634
2993 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3635 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2994 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3636 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2995 3637
2996 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3638 {
2997 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3639 /*
2998 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3640 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3641 * by coro_sig_vtbl in hash values.
3642 */
3643 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3644
3645 /* this only works if perl doesn't have a vtbl for %SIG */
3646 assert (!mg->mg_virtual);
3647
3648 /*
3649 * The irony is that the perl API itself asserts that mg_virtual
3650 * must be non-const, yet perl5porters insisted on marking their
3651 * vtbls as read-only, just to thwart perl modules from patching
3652 * them.
3653 */
3654 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3655 mg->mg_flags |= MGf_COPY;
3656
3657 coro_sigelem_vtbl = PL_vtbl_sigelem;
3658 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3659 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3660 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3661 }
2999 3662
3000 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3001 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3663 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3002 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3664 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3003 3665
3004 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3666 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3005 3667
… …
3034 coroapi.prepare_nop = prepare_nop; 3696 coroapi.prepare_nop = prepare_nop;
3035 coroapi.prepare_schedule = prepare_schedule; 3697 coroapi.prepare_schedule = prepare_schedule;
3036 coroapi.prepare_cede = prepare_cede; 3698 coroapi.prepare_cede = prepare_cede;
3037 coroapi.prepare_cede_notself = prepare_cede_notself; 3699 coroapi.prepare_cede_notself = prepare_cede_notself;
3038 3700
3039 { 3701 time_init (aTHX);
3040 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3041
3042 if (!svp) croak ("Time::HiRes is required");
3043 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3044
3045 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3046
3047 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3048 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
3049 }
3050 3702
3051 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3703 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3704#if CORO_JIT
3705 PUTBACK;
3706 jit_init (aTHX);
3707 SPAGAIN;
3708#endif
3052} 3709}
3053 3710
3054SV * 3711SV *
3055new (SV *klass, ...) 3712new (SV *klass, ...)
3056 ALIAS: 3713 ALIAS:
3057 Coro::new = 1 3714 Coro::new = 1
3058 CODE: 3715 CODE:
3059 RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); 3716 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
3060 OUTPUT: 3717 OUTPUT:
3061 RETVAL 3718 RETVAL
3062 3719
3063void 3720void
3064transfer (...) 3721transfer (...)
3065 PROTOTYPE: $$ 3722 PROTOTYPE: $$
3066 CODE: 3723 CODE:
3067 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3724 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3068
3069bool
3070_destroy (SV *coro_sv)
3071 CODE:
3072 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3073 OUTPUT:
3074 RETVAL
3075
3076void
3077_exit (int code)
3078 PROTOTYPE: $
3079 CODE:
3080 _exit (code);
3081 3725
3082SV * 3726SV *
3083clone (Coro::State coro) 3727clone (Coro::State coro)
3084 CODE: 3728 CODE:
3085{ 3729{
… …
3140void 3784void
3141list () 3785list ()
3142 PROTOTYPE: 3786 PROTOTYPE:
3143 PPCODE: 3787 PPCODE:
3144{ 3788{
3145 struct coro *coro; 3789 struct coro *coro;
3146 for (coro = coro_first; coro; coro = coro->next) 3790 for (coro = coro_first; coro; coro = coro->next)
3147 if (coro->hv) 3791 if (coro->hv)
3148 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3792 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3149} 3793}
3150 3794
… …
3155 CODE: 3799 CODE:
3156{ 3800{
3157 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3801 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3158 { 3802 {
3159 struct coro *current = SvSTATE_current; 3803 struct coro *current = SvSTATE_current;
3804 struct CoroSLF slf_save;
3160 3805
3161 if (current != coro) 3806 if (current != coro)
3162 { 3807 {
3163 PUTBACK; 3808 PUTBACK;
3164 save_perl (aTHX_ current); 3809 save_perl (aTHX_ current);
3165 load_perl (aTHX_ coro); 3810 load_perl (aTHX_ coro);
3811 /* the coro is most likely in an active SLF call.
3812 * while not strictly required (the code we execute is
3813 * not allowed to call any SLF functions), it's cleaner
3814 * to reinitialise the slf_frame and restore it later.
3815 * This might one day allow us to actually do SLF calls
3816 * from code executed here.
3817 */
3818 slf_save = slf_frame;
3819 slf_frame.prepare = 0;
3166 SPAGAIN; 3820 SPAGAIN;
3167 } 3821 }
3168 3822
3169 PUSHSTACK; 3823 PUSHSTACK;
3170 3824
… …
3180 SPAGAIN; 3834 SPAGAIN;
3181 3835
3182 if (current != coro) 3836 if (current != coro)
3183 { 3837 {
3184 PUTBACK; 3838 PUTBACK;
3839 slf_frame = slf_save;
3185 save_perl (aTHX_ coro); 3840 save_perl (aTHX_ coro);
3186 load_perl (aTHX_ current); 3841 load_perl (aTHX_ current);
3187 SPAGAIN; 3842 SPAGAIN;
3188 } 3843 }
3189 } 3844 }
… …
3194 PROTOTYPE: $ 3849 PROTOTYPE: $
3195 ALIAS: 3850 ALIAS:
3196 is_ready = CF_READY 3851 is_ready = CF_READY
3197 is_running = CF_RUNNING 3852 is_running = CF_RUNNING
3198 is_new = CF_NEW 3853 is_new = CF_NEW
3199 is_destroyed = CF_DESTROYED 3854 is_destroyed = CF_ZOMBIE
3855 is_zombie = CF_ZOMBIE
3200 is_suspended = CF_SUSPENDED 3856 is_suspended = CF_SUSPENDED
3201 CODE: 3857 CODE:
3202 RETVAL = boolSV (coro->flags & ix); 3858 RETVAL = boolSV (coro->flags & ix);
3203 OUTPUT: 3859 OUTPUT:
3204 RETVAL 3860 RETVAL
3205 3861
3206void 3862void
3207throw (Coro::State self, SV *throw = &PL_sv_undef) 3863throw (SV *self, SV *exception = &PL_sv_undef)
3208 PROTOTYPE: $;$ 3864 PROTOTYPE: $;$
3209 CODE: 3865 CODE:
3210{ 3866{
3867 struct coro *coro = SvSTATE (self);
3211 struct coro *current = SvSTATE_current; 3868 struct coro *current = SvSTATE_current;
3212 SV **throwp = self == current ? &CORO_THROW : &self->except; 3869 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3213 SvREFCNT_dec (*throwp); 3870 SvREFCNT_dec (*exceptionp);
3214 SvGETMAGIC (throw); 3871 SvGETMAGIC (exception);
3215 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3872 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3873
3874 api_ready (aTHX_ self);
3216} 3875}
3217 3876
3218void 3877void
3219api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3878api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3220 PROTOTYPE: $;$ 3879 PROTOTYPE: $;$
… …
3275 3934
3276void 3935void
3277cancel (Coro::State self) 3936cancel (Coro::State self)
3278 CODE: 3937 CODE:
3279 coro_state_destroy (aTHX_ self); 3938 coro_state_destroy (aTHX_ self);
3280 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3281
3282 3939
3283SV * 3940SV *
3284enable_times (int enabled = enable_times) 3941enable_times (int enabled = enable_times)
3285 CODE: 3942 CODE:
3286{ 3943{
… …
3299 3956
3300void 3957void
3301times (Coro::State self) 3958times (Coro::State self)
3302 PPCODE: 3959 PPCODE:
3303{ 3960{
3304 struct coro *current = SvSTATE (coro_current); 3961 struct coro *current = SvSTATE (coro_current);
3305 3962
3306 if (expect_false (current == self)) 3963 if (ecb_expect_false (current == self))
3307 { 3964 {
3308 coro_times_update (); 3965 coro_times_update ();
3309 coro_times_add (SvSTATE (coro_current)); 3966 coro_times_add (SvSTATE (coro_current));
3310 } 3967 }
3311 3968
3312 EXTEND (SP, 2); 3969 EXTEND (SP, 2);
3313 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3970 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3314 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3971 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3315 3972
3316 if (expect_false (current == self)) 3973 if (ecb_expect_false (current == self))
3317 coro_times_sub (SvSTATE (coro_current)); 3974 coro_times_sub (SvSTATE (coro_current));
3318} 3975}
3319 3976
3977void
3978swap_sv (Coro::State coro, SV *sva, SV *svb)
3979 CODE:
3980{
3981 struct coro *current = SvSTATE_current;
3982 AV *swap_sv;
3983 int i;
3984
3985 sva = SvRV (sva);
3986 svb = SvRV (svb);
3987
3988 if (current == coro)
3989 SWAP_SVS_LEAVE (current);
3990
3991 if (!coro->swap_sv)
3992 coro->swap_sv = newAV ();
3993
3994 swap_sv = coro->swap_sv;
3995
3996 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
3997 {
3998 SV *a = AvARRAY (swap_sv)[i ];
3999 SV *b = AvARRAY (swap_sv)[i + 1];
4000
4001 if (a == sva && b == svb)
4002 {
4003 SvREFCNT_dec_NN (a);
4004 SvREFCNT_dec_NN (b);
4005
4006 for (; i <= AvFILLp (swap_sv) - 2; i++)
4007 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4008
4009 AvFILLp (swap_sv) -= 2;
4010
4011 goto removed;
4012 }
4013 }
4014
4015 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4016 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4017
4018 removed:
4019
4020 if (current == coro)
4021 SWAP_SVS_ENTER (current);
4022}
4023
4024
3320MODULE = Coro::State PACKAGE = Coro 4025MODULE = Coro::State PACKAGE = Coro
3321 4026
3322BOOT: 4027BOOT:
3323{ 4028{
4029 if (SVt_LAST > 32)
4030 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
4031
3324 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4032 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3325 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4033 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3326 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 4034 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3327 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3328 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4035 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3329 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4036 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3330 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4037 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3331 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4038 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3332 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4039 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3333 4040
3334 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4041 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3335 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4042 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3336 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4043 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3337 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 4044 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3338 4045
3339 coro_stash = gv_stashpv ("Coro", TRUE); 4046 coro_stash = gv_stashpv ("Coro", TRUE);
3340 4047
3341 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 4048 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3342 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 4049 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
… …
3355 coroapi.ready = api_ready; 4062 coroapi.ready = api_ready;
3356 coroapi.is_ready = api_is_ready; 4063 coroapi.is_ready = api_is_ready;
3357 coroapi.nready = coro_nready; 4064 coroapi.nready = coro_nready;
3358 coroapi.current = coro_current; 4065 coroapi.current = coro_current;
3359 4066
4067 coroapi.enterleave_hook = api_enterleave_hook;
4068 coroapi.enterleave_unhook = api_enterleave_unhook;
4069 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4070
3360 /*GCoroAPI = &coroapi;*/ 4071 /*GCoroAPI = &coroapi;*/
3361 sv_setiv (sv, (IV)&coroapi); 4072 sv_setiv (sv, (IV)&coroapi);
3362 SvREADONLY_on (sv); 4073 SvREADONLY_on (sv);
3363 } 4074 }
3364} 4075}
3365 4076
3366SV * 4077SV *
3367async (...) 4078async (...)
3368 PROTOTYPE: &@ 4079 PROTOTYPE: &@
3369 CODE: 4080 CODE:
3370 RETVAL = coro_new (coro_stash, &ST (0), items, 1); 4081 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3371 api_ready (RETVAL); 4082 api_ready (aTHX_ RETVAL);
3372 OUTPUT: 4083 OUTPUT:
3373 RETVAL 4084 RETVAL
4085
4086void
4087_destroy (Coro::State coro)
4088 CODE:
4089 /* used by the manager thread */
4090 coro_state_destroy (aTHX_ coro);
4091
4092void
4093on_destroy (Coro::State coro, SV *cb)
4094 CODE:
4095 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4096
4097void
4098join (...)
4099 CODE:
4100 CORO_EXECUTE_SLF_XS (slf_init_join);
3374 4101
3375void 4102void
3376terminate (...) 4103terminate (...)
3377 CODE: 4104 CODE:
3378 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4105 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3379 4106
3380void 4107void
4108cancel (...)
4109 CODE:
4110 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4111
4112int
4113safe_cancel (Coro::State self, ...)
4114 C_ARGS: aTHX_ self, &ST (1), items - 1
4115
4116void
3381schedule (...) 4117schedule (...)
3382 CODE: 4118 CODE:
3383 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4119 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3384 4120
3385void 4121void
… …
3404 4140
3405void 4141void
3406_set_current (SV *current) 4142_set_current (SV *current)
3407 PROTOTYPE: $ 4143 PROTOTYPE: $
3408 CODE: 4144 CODE:
3409 SvREFCNT_dec (SvRV (coro_current)); 4145 SvREFCNT_dec_NN (SvRV (coro_current));
3410 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4146 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3411 4147
3412void 4148void
3413_set_readyhook (SV *hook) 4149_set_readyhook (SV *hook)
3414 PROTOTYPE: $ 4150 PROTOTYPE: $
… …
3496 for (i = 1; i < items; ++i) 4232 for (i = 1; i < items; ++i)
3497 av_push (av, SvREFCNT_inc_NN (ST (i))); 4233 av_push (av, SvREFCNT_inc_NN (ST (i)));
3498 4234
3499 if ((SV *)hv == &PL_sv_undef) 4235 if ((SV *)hv == &PL_sv_undef)
3500 { 4236 {
3501 PUSHMARK (SP); 4237 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3502 EXTEND (SP, 2);
3503 PUSHs (sv_Coro);
3504 PUSHs ((SV *)cv_pool_handler);
3505 PUTBACK;
3506 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3507 SPAGAIN;
3508
3509 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4238 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4239 SvREFCNT_dec_NN (sv);
3510 } 4240 }
3511 4241
3512 { 4242 {
3513 struct coro *coro = SvSTATE_hv (hv); 4243 struct coro *coro = SvSTATE_hv (hv);
3514 4244
… …
3521 api_ready (aTHX_ (SV *)hv); 4251 api_ready (aTHX_ (SV *)hv);
3522 4252
3523 if (GIMME_V != G_VOID) 4253 if (GIMME_V != G_VOID)
3524 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4254 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3525 else 4255 else
3526 SvREFCNT_dec (hv); 4256 SvREFCNT_dec_NN (hv);
3527} 4257}
3528 4258
3529SV * 4259SV *
3530rouse_cb () 4260rouse_cb ()
3531 PROTOTYPE: 4261 PROTOTYPE:
… …
3546 on_leave = 1 4276 on_leave = 1
3547 PROTOTYPE: & 4277 PROTOTYPE: &
3548 CODE: 4278 CODE:
3549{ 4279{
3550 struct coro *coro = SvSTATE_current; 4280 struct coro *coro = SvSTATE_current;
3551 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4281 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3552 4282
3553 block = s_get_cv_croak (block); 4283 block = s_get_cv_croak (block);
3554 4284
3555 if (!*avp) 4285 if (!*avp)
3556 *avp = newAV (); 4286 *avp = newAV ();
… …
3576 4306
3577SV * 4307SV *
3578new (SV *klass, SV *count = 0) 4308new (SV *klass, SV *count = 0)
3579 CODE: 4309 CODE:
3580{ 4310{
3581 int semcnt = 1; 4311 int semcnt = 1;
3582 4312
3583 if (count) 4313 if (count)
3584 { 4314 {
3585 SvGETMAGIC (count); 4315 SvGETMAGIC (count);
3586 4316
… …
3610 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4340 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3611 OUTPUT: 4341 OUTPUT:
3612 RETVAL 4342 RETVAL
3613 4343
3614void 4344void
3615up (SV *self, int adjust = 1) 4345up (SV *self)
3616 ALIAS:
3617 adjust = 1
3618 CODE: 4346 CODE:
4347 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4348
4349void
4350adjust (SV *self, int adjust)
4351 CODE:
3619 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4352 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3620 4353
3621void 4354void
3622down (...) 4355down (...)
3623 CODE: 4356 CODE:
3624 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4357 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3646 XSRETURN_NO; 4379 XSRETURN_NO;
3647} 4380}
3648 4381
3649void 4382void
3650waiters (SV *self) 4383waiters (SV *self)
3651 PPCODE: 4384 PPCODE:
3652{ 4385{
3653 AV *av = (AV *)SvRV (self); 4386 AV *av = (AV *)SvRV (self);
3654 int wcount = AvFILLp (av) + 1 - 1; 4387 int wcount = AvFILLp (av) + 1 - 1;
3655 4388
3656 if (GIMME_V == G_SCALAR) 4389 if (GIMME_V == G_SCALAR)
… …
3665} 4398}
3666 4399
3667MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4400MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3668 4401
3669void 4402void
3670_may_delete (SV *sem, int count, int extra_refs) 4403_may_delete (SV *sem, int count, unsigned int extra_refs)
3671 PPCODE: 4404 PPCODE:
3672{ 4405{
3673 AV *av = (AV *)SvRV (sem); 4406 AV *av = (AV *)SvRV (sem);
3674 4407
3675 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4408 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3676 && AvFILLp (av) == 0 /* no waiters, just count */ 4409 && AvFILLp (av) == 0 /* no waiters, just count */
3677 && SvIV (AvARRAY (av)[0]) == count) 4410 && SvIV (AvARRAY (av)[0]) == count)
3678 XSRETURN_YES; 4411 XSRETURN_YES;
… …
3699 4432
3700void 4433void
3701broadcast (SV *self) 4434broadcast (SV *self)
3702 CODE: 4435 CODE:
3703{ 4436{
3704 AV *av = (AV *)SvRV (self); 4437 AV *av = (AV *)SvRV (self);
3705 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4438 coro_signal_wake (aTHX_ av, AvFILLp (av));
3706} 4439}
3707 4440
3708void 4441void
3709send (SV *self) 4442send (SV *self)
… …
3717 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4450 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3718} 4451}
3719 4452
3720IV 4453IV
3721awaited (SV *self) 4454awaited (SV *self)
3722 CODE: 4455 CODE:
3723 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4456 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3724 OUTPUT: 4457 OUTPUT:
3725 RETVAL 4458 RETVAL
3726 4459
3727 4460
… …
3732 4465
3733void 4466void
3734_schedule (...) 4467_schedule (...)
3735 CODE: 4468 CODE:
3736{ 4469{
3737 static int incede; 4470 static int incede;
3738 4471
3739 api_cede_notself (aTHX); 4472 api_cede_notself (aTHX);
3740 4473
3741 ++incede; 4474 ++incede;
3742 while (coro_nready >= incede && api_cede (aTHX)) 4475 while (coro_nready >= incede && api_cede (aTHX))
… …
3786 { 4519 {
3787 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; 4520 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3788 coro_old_pp_sselect = 0; 4521 coro_old_pp_sselect = 0;
3789 } 4522 }
3790 4523
4524MODULE = Coro::State PACKAGE = Coro::Util
3791 4525
4526void
4527_exit (int code)
4528 CODE:
4529 _exit (code);
4530
4531NV
4532time ()
4533 CODE:
4534 RETVAL = nvtime (aTHX);
4535 OUTPUT:
4536 RETVAL
4537
4538NV
4539gettimeofday ()
4540 PPCODE:
4541{
4542 UV tv [2];
4543 u2time (aTHX_ tv);
4544 EXTEND (SP, 2);
4545 PUSHs (sv_2mortal (newSVuv (tv [0])));
4546 PUSHs (sv_2mortal (newSVuv (tv [1])));
4547}
4548

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