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Comparing Coro/Coro/State.xs (file contents):
Revision 1.372 by root, Thu Oct 1 23:50:23 2009 UTC vs.
Revision 1.470 by root, Fri Jul 14 13:14:32 2017 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#if PERL_VERSION_ATLEAST(5,24,0)
122# define SUB_ARGARRAY PL_curpad[0]
123#else
124# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
125#endif
126
127/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
128#if 0
129# undef NDEBUG
130# include <assert.h>
131#endif
132
115static double (*nvtime)(); /* so why doesn't it take void? */ 133static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]); 134static void (*u2time)(pTHX_ UV ret[2]);
117 135
118/* we hijack an hopefully unused CV flag for our purposes */ 136/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000 137#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX); 138static OP *pp_slf (pTHX);
139static void slf_destroy (pTHX_ struct coro *coro);
121 140
122static U32 cctx_gen; 141static U32 cctx_gen;
123static size_t cctx_stacksize = CORO_STACKSIZE; 142static size_t cctx_stacksize = CORO_STACKSIZE;
124static struct CoroAPI coroapi; 143static struct CoroAPI coroapi;
125static AV *main_mainstack; /* used to differentiate between $main and others */ 144static AV *main_mainstack; /* used to differentiate between $main and others */
… …
133 152
134static GV *irsgv; /* $/ */ 153static GV *irsgv; /* $/ */
135static GV *stdoutgv; /* *STDOUT */ 154static GV *stdoutgv; /* *STDOUT */
136static SV *rv_diehook; 155static SV *rv_diehook;
137static SV *rv_warnhook; 156static SV *rv_warnhook;
138static HV *hv_sig; /* %SIG */
139 157
140/* async_pool helper stuff */ 158/* async_pool helper stuff */
141static SV *sv_pool_rss; 159static SV *sv_pool_rss;
142static SV *sv_pool_size; 160static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */ 161static SV *sv_async_pool_idle; /* description string */
… …
155static char times_valid; 173static char times_valid;
156 174
157static struct coro_cctx *cctx_first; 175static struct coro_cctx *cctx_first;
158static int cctx_count, cctx_idle; 176static int cctx_count, cctx_idle;
159 177
160enum { 178enum
179{
161 CC_MAPPED = 0x01, 180 CC_MAPPED = 0x01,
162 CC_NOREUSE = 0x02, /* throw this away after tracing */ 181 CC_NOREUSE = 0x02, /* throw this away after tracing */
163 CC_TRACE = 0x04, 182 CC_TRACE = 0x04,
164 CC_TRACE_SUB = 0x08, /* trace sub calls */ 183 CC_TRACE_SUB = 0x08, /* trace sub calls */
165 CC_TRACE_LINE = 0x10, /* trace each statement */ 184 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
170typedef struct coro_cctx 189typedef struct coro_cctx
171{ 190{
172 struct coro_cctx *next; 191 struct coro_cctx *next;
173 192
174 /* the stack */ 193 /* the stack */
175 void *sptr; 194 struct coro_stack stack;
176 size_t ssize;
177 195
178 /* cpu state */ 196 /* cpu state */
179 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 197 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
198#ifndef NDEBUG
180 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 199 JMPENV *idle_te; /* same as idle_sp, but for top_env */
200#endif
181 JMPENV *top_env; 201 JMPENV *top_env;
182 coro_context cctx; 202 coro_context cctx;
183 203
184 U32 gen; 204 U32 gen;
185#if CORO_USE_VALGRIND 205#if CORO_USE_VALGRIND
186 int valgrind_id; 206 int valgrind_id;
187#endif 207#endif
188 unsigned char flags; 208 unsigned char flags;
189} coro_cctx; 209} coro_cctx;
190 210
191coro_cctx *cctx_current; /* the currently running cctx */ 211static coro_cctx *cctx_current; /* the currently running cctx */
192 212
193/*****************************************************************************/ 213/*****************************************************************************/
194 214
215static MGVTBL coro_state_vtbl;
216
195enum { 217enum
218{
196 CF_RUNNING = 0x0001, /* coroutine is running */ 219 CF_RUNNING = 0x0001, /* coroutine is running */
197 CF_READY = 0x0002, /* coroutine is ready */ 220 CF_READY = 0x0002, /* coroutine is ready */
198 CF_NEW = 0x0004, /* has never been switched to */ 221 CF_NEW = 0x0004, /* has never been switched to */
199 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 222 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
200 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ 223 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
224 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
201}; 225};
202 226
203/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
204typedef struct 228typedef struct
205{ 229{
206 SV *defsv;
207 AV *defav;
208 SV *errsv;
209 SV *irsgv;
210 HV *hinthv;
211#define VAR(name,type) type name; 230 #define VARx(name,expr,type) type name;
212# include "state.h" 231 #include "state.h"
213#undef VAR
214} perl_slots; 232} perl_slots;
215 233
234/* how many context stack entries do we need for perl_slots */
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 235#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 236
218/* this is a structure representing a perl-level coroutine */ 237/* this is a structure representing a perl-level coroutine */
219struct coro { 238struct coro
239{
220 /* the C coroutine allocated to this perl coroutine, if any */ 240 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 241 coro_cctx *cctx;
222 242
223 /* ready queue */ 243 /* ready queue */
224 struct coro *next_ready; 244 struct coro *next_ready;
… …
226 /* state data */ 246 /* state data */
227 struct CoroSLF slf_frame; /* saved slf frame */ 247 struct CoroSLF slf_frame; /* saved slf frame */
228 AV *mainstack; 248 AV *mainstack;
229 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
230 250
231 CV *startcv; /* the CV to execute */ 251 CV *startcv; /* the CV to execute */
232 AV *args; /* data associated with this coroutine (initial args) */ 252 AV *args; /* data associated with this coroutine (initial args) */
233 int refcnt; /* coroutines are refcounted, yes */
234 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
235 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
236 void (*on_destroy)(pTHX_ struct coro *coro);
237 255
238 /* statistics */ 256 /* statistics */
239 int usecount; /* number of transfers to this coro */ 257 int usecount; /* number of transfers to this coro */
240 258
241 /* coro process data */ 259 /* coro process data */
242 int prio; 260 int prio;
243 SV *except; /* exception to be thrown */ 261 SV *except; /* exception to be thrown */
244 SV *rouse_cb; 262 SV *rouse_cb; /* last rouse callback */
263 AV *on_destroy; /* callbacks or coros to notify on destroy */
264 AV *status; /* the exit status list */
245 265
246 /* async_pool */ 266 /* async_pool */
247 SV *saved_deffh; 267 SV *saved_deffh;
248 SV *invoke_cb; 268 SV *invoke_cb;
249 AV *invoke_av; 269 AV *invoke_av;
250 270
251 /* on_enter/on_leave */ 271 /* on_enter/on_leave */
252 AV *on_enter; 272 AV *on_enter; AV *on_enter_xs;
253 AV *on_leave; 273 AV *on_leave; AV *on_leave_xs;
274
275 /* swap_sv */
276 AV *swap_sv;
254 277
255 /* times */ 278 /* times */
256 coro_ts t_cpu, t_real; 279 coro_ts t_cpu, t_real;
257 280
258 /* linked list */ 281 /* linked list */
… …
262typedef struct coro *Coro__State; 285typedef struct coro *Coro__State;
263typedef struct coro *Coro__State_or_hashref; 286typedef struct coro *Coro__State_or_hashref;
264 287
265/* the following variables are effectively part of the perl context */ 288/* the following variables are effectively part of the perl context */
266/* and get copied between struct coro and these variables */ 289/* and get copied between struct coro and these variables */
267/* the mainr easonw e don't support windows process emulation */ 290/* the main reason we don't support windows process emulation */
268static struct CoroSLF slf_frame; /* the current slf frame */ 291static struct CoroSLF slf_frame; /* the current slf frame */
269 292
270/** Coro ********************************************************************/ 293/** Coro ********************************************************************/
271 294
272#define CORO_PRIO_MAX 3 295#define CORO_PRIO_MAX 3
… …
278 301
279/* for Coro.pm */ 302/* for Coro.pm */
280static SV *coro_current; 303static SV *coro_current;
281static SV *coro_readyhook; 304static SV *coro_readyhook;
282static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ 305static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
283static CV *cv_coro_run, *cv_coro_terminate; 306static CV *cv_coro_run;
284static struct coro *coro_first; 307static struct coro *coro_first;
285#define coro_nready coroapi.nready 308#define coro_nready coroapi.nready
309
310/** JIT *********************************************************************/
311
312#if CORO_JIT
313 /* APPLE doesn't have mmap though */
314 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
315 #ifndef CORO_JIT_TYPE
316 #if ECB_AMD64 && CORO_JIT_UNIXY
317 #define CORO_JIT_TYPE "amd64-unix"
318 #elif __i386 && CORO_JIT_UNIXY
319 #define CORO_JIT_TYPE "x86-unix"
320 #endif
321 #endif
322#endif
323
324#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
325 #undef CORO_JIT
326#endif
327
328#if CORO_JIT
329 typedef void (*load_save_perl_slots_type)(perl_slots *);
330 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
331#endif
286 332
287/** Coro::Select ************************************************************/ 333/** Coro::Select ************************************************************/
288 334
289static OP *(*coro_old_pp_sselect) (pTHX); 335static OP *(*coro_old_pp_sselect) (pTHX);
290static SV *coro_select_select; 336static SV *coro_select_select;
… …
302 PL_op->op_flags |= OPf_STACKED; 348 PL_op->op_flags |= OPf_STACKED;
303 PL_op->op_private = 0; 349 PL_op->op_private = 0;
304 return PL_ppaddr [OP_ENTERSUB](aTHX); 350 return PL_ppaddr [OP_ENTERSUB](aTHX);
305} 351}
306 352
353/** time stuff **************************************************************/
354
355#ifdef HAS_GETTIMEOFDAY
356
357ecb_inline void
358coro_u2time (pTHX_ UV ret[2])
359{
360 struct timeval tv;
361 gettimeofday (&tv, 0);
362
363 ret [0] = tv.tv_sec;
364 ret [1] = tv.tv_usec;
365}
366
367ecb_inline double
368coro_nvtime (void)
369{
370 struct timeval tv;
371 gettimeofday (&tv, 0);
372
373 return tv.tv_sec + tv.tv_usec * 1e-6;
374}
375
376ecb_inline void
377time_init (pTHX)
378{
379 nvtime = coro_nvtime;
380 u2time = coro_u2time;
381}
382
383#else
384
385ecb_inline void
386time_init (pTHX)
387{
388 SV **svp;
389
390 require_pv ("Time/HiRes.pm");
391
392 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
393
394 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
395 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
396
397 nvtime = INT2PTR (double (*)(), SvIV (*svp));
398
399 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
400 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
401}
402
403#endif
404
307/** lowlevel stuff **********************************************************/ 405/** lowlevel stuff **********************************************************/
308 406
309static SV * 407static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 408coro_get_sv (pTHX_ const char *name, int create)
311{ 409{
312#if PERL_VERSION_ATLEAST (5,10,0) 410#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 411 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_sv (name, create); 412 get_sv (name, create);
315#endif 413#endif
316 return get_sv (name, create); 414 return get_sv (name, create);
317} 415}
318 416
319static AV * 417static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 418coro_get_av (pTHX_ const char *name, int create)
321{ 419{
322#if PERL_VERSION_ATLEAST (5,10,0) 420#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 421 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_av (name, create); 422 get_av (name, create);
325#endif 423#endif
326 return get_av (name, create); 424 return get_av (name, create);
327} 425}
328 426
329static HV * 427static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 428coro_get_hv (pTHX_ const char *name, int create)
331{ 429{
332#if PERL_VERSION_ATLEAST (5,10,0) 430#if PERL_VERSION_ATLEAST (5,10,0)
333 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 431 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
334 get_hv (name, create); 432 get_hv (name, create);
335#endif 433#endif
336 return get_hv (name, create); 434 return get_hv (name, create);
337} 435}
338 436
339INLINE void 437ecb_inline void
340coro_times_update () 438coro_times_update (void)
341{ 439{
342#ifdef coro_clock_gettime 440#ifdef coro_clock_gettime
343 struct timespec ts; 441 struct timespec ts;
344 442
345 ts.tv_sec = ts.tv_nsec = 0; 443 ts.tv_sec = ts.tv_nsec = 0;
… …
357 time_real [0] = tv [0]; 455 time_real [0] = tv [0];
358 time_real [1] = tv [1] * 1000; 456 time_real [1] = tv [1] * 1000;
359#endif 457#endif
360} 458}
361 459
362INLINE void 460ecb_inline void
363coro_times_add (struct coro *c) 461coro_times_add (struct coro *c)
364{ 462{
365 c->t_real [1] += time_real [1]; 463 c->t_real [1] += time_real [1];
366 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } 464 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
367 c->t_real [0] += time_real [0]; 465 c->t_real [0] += time_real [0];
… …
369 c->t_cpu [1] += time_cpu [1]; 467 c->t_cpu [1] += time_cpu [1];
370 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } 468 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
371 c->t_cpu [0] += time_cpu [0]; 469 c->t_cpu [0] += time_cpu [0];
372} 470}
373 471
374INLINE void 472ecb_inline void
375coro_times_sub (struct coro *c) 473coro_times_sub (struct coro *c)
376{ 474{
377 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } 475 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
378 c->t_real [1] -= time_real [1]; 476 c->t_real [1] -= time_real [1];
379 c->t_real [0] -= time_real [0]; 477 c->t_real [0] -= time_real [0];
… …
387/* magic glue */ 485/* magic glue */
388 486
389#define CORO_MAGIC_type_cv 26 487#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext 488#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 489
392#define CORO_MAGIC_NN(sv, type) \ 490#define CORO_MAGIC_NN(sv, type) \
393 (expect_true (SvMAGIC (sv)->mg_type == type) \ 491 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
394 ? SvMAGIC (sv) \ 492 ? SvMAGIC (sv) \
395 : mg_find (sv, type)) 493 : mg_find (sv, type))
396 494
397#define CORO_MAGIC(sv, type) \ 495#define CORO_MAGIC(sv, type) \
398 (expect_true (SvMAGIC (sv)) \ 496 (ecb_expect_true (SvMAGIC (sv)) \
399 ? CORO_MAGIC_NN (sv, type) \ 497 ? CORO_MAGIC_NN (sv, type) \
400 : 0) 498 : 0)
401 499
402#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 500#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
403#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) 501#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
404 502
405INLINE struct coro * 503ecb_inline MAGIC *
406SvSTATE_ (pTHX_ SV *coro) 504SvSTATEhv_p (pTHX_ SV *coro)
407{ 505{
408 HV *stash;
409 MAGIC *mg; 506 MAGIC *mg;
410 507
508 if (ecb_expect_true (
509 SvTYPE (coro) == SVt_PVHV
510 && (mg = CORO_MAGIC_state (coro))
511 && mg->mg_virtual == &coro_state_vtbl
512 ))
513 return mg;
514
515 return 0;
516}
517
518ecb_inline struct coro *
519SvSTATE_ (pTHX_ SV *coro_sv)
520{
521 MAGIC *mg;
522
411 if (SvROK (coro)) 523 if (SvROK (coro_sv))
412 coro = SvRV (coro); 524 coro_sv = SvRV (coro_sv);
413 525
414 if (expect_false (SvTYPE (coro) != SVt_PVHV)) 526 mg = SvSTATEhv_p (aTHX_ coro_sv);
527 if (!mg)
415 croak ("Coro::State object required"); 528 croak ("Coro::State object required");
416 529
417 stash = SvSTASH (coro);
418 if (expect_false (stash != coro_stash && stash != coro_state_stash))
419 {
420 /* very slow, but rare, check */
421 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
422 croak ("Coro::State object required");
423 }
424
425 mg = CORO_MAGIC_state (coro);
426 return (struct coro *)mg->mg_ptr; 530 return (struct coro *)mg->mg_ptr;
427} 531}
428 532
429#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 533#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
430 534
… …
433#define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) 537#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
434 538
435/*****************************************************************************/ 539/*****************************************************************************/
436/* padlist management and caching */ 540/* padlist management and caching */
437 541
438static AV * 542ecb_inline PADLIST *
439coro_derive_padlist (pTHX_ CV *cv) 543coro_derive_padlist (pTHX_ CV *cv)
440{ 544{
441 AV *padlist = CvPADLIST (cv); 545 PADLIST *padlist = CvPADLIST (cv);
442 AV *newpadlist, *newpad; 546 PADLIST *newpadlist;
547 PADNAMELIST *padnames;
548 PAD *newpad;
549 PADOFFSET off = PadlistMAX (padlist) + 1;
443 550
444 newpadlist = newAV (); 551#if NEWPADAPI
552
553 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
554 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
555 while (!PadlistARRAY (padlist)[off - 1])
556 --off;
557
558 Perl_pad_push (aTHX_ padlist, off);
559
560 newpad = PadlistARRAY (padlist)[off];
561 PadlistARRAY (padlist)[off] = 0;
562
563#else
564
565#if PERL_VERSION_ATLEAST (5,10,0)
566 Perl_pad_push (aTHX_ padlist, off);
567#else
568 Perl_pad_push (aTHX_ padlist, off, 1);
569#endif
570
571 newpad = PadlistARRAY (padlist)[off];
572 PadlistMAX (padlist) = off - 1;
573
574#endif
575
576 newPADLIST (newpadlist);
577#if !PERL_VERSION_ATLEAST(5,15,3)
578 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
445 AvREAL_off (newpadlist); 579 AvREAL_off (newpadlist);
446#if PERL_VERSION_ATLEAST (5,10,0)
447 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
448#else
449 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
450#endif 580#endif
451 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
452 --AvFILLp (padlist);
453 581
454 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); 582 /* Already extended to 2 elements by newPADLIST. */
455 av_store (newpadlist, 1, (SV *)newpad); 583 PadlistMAX (newpadlist) = 1;
584
585 padnames = PadlistNAMES (padlist);
586 ++PadnamelistREFCNT (padnames);
587 PadlistNAMES (newpadlist) = padnames;
588
589 PadlistARRAY (newpadlist)[1] = newpad;
456 590
457 return newpadlist; 591 return newpadlist;
458} 592}
459 593
460static void 594ecb_inline void
461free_padlist (pTHX_ AV *padlist) 595free_padlist (pTHX_ PADLIST *padlist)
462{ 596{
463 /* may be during global destruction */ 597 /* may be during global destruction */
464 if (!IN_DESTRUCT) 598 if (!IN_DESTRUCT)
465 { 599 {
466 I32 i = AvFILLp (padlist); 600 I32 i = PadlistMAX (padlist);
467 601
468 while (i > 0) /* special-case index 0 */ 602 while (i > 0) /* special-case index 0 */
469 { 603 {
470 /* we try to be extra-careful here */ 604 /* we try to be extra-careful here */
471 AV *av = (AV *)AvARRAY (padlist)[i--]; 605 PAD *pad = PadlistARRAY (padlist)[i--];
472 I32 j = AvFILLp (av);
473 606
607 if (pad)
608 {
609 I32 j = PadMAX (pad);
610
474 while (j >= 0) 611 while (j >= 0)
475 SvREFCNT_dec (AvARRAY (av)[j--]); 612 SvREFCNT_dec (PadARRAY (pad)[j--]);
476 613
477 AvFILLp (av) = -1; 614 PadMAX (pad) = -1;
478 SvREFCNT_dec (av); 615 SvREFCNT_dec (pad);
616 }
479 } 617 }
480 618
481 SvREFCNT_dec (AvARRAY (padlist)[0]); 619 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
482 620
621#if NEWPADAPI
622 Safefree (PadlistARRAY (padlist));
623 Safefree (padlist);
624#else
483 AvFILLp (padlist) = -1; 625 AvFILLp (padlist) = -1;
626 AvREAL_off (padlist);
484 SvREFCNT_dec ((SV*)padlist); 627 SvREFCNT_dec ((SV*)padlist);
628#endif
485 } 629 }
486} 630}
487 631
488static int 632static int
489coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 633coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
490{ 634{
491 AV *padlist; 635 PADLIST *padlist;
492 AV *av = (AV *)mg->mg_obj; 636 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
637 size_t len = *(size_t *)mg->mg_ptr;
493 638
494 /* perl manages to free our internal AV and _then_ call us */ 639 /* perl manages to free our internal AV and _then_ call us */
495 if (IN_DESTRUCT) 640 if (IN_DESTRUCT)
496 return 0; 641 return 0;
497 642
498 /* casting is fun. */ 643 while (len--)
499 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
500 free_padlist (aTHX_ padlist); 644 free_padlist (aTHX_ padlists[len]);
501
502 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
503 645
504 return 0; 646 return 0;
505} 647}
506 648
507static MGVTBL coro_cv_vtbl = { 649static MGVTBL coro_cv_vtbl = {
508 0, 0, 0, 0, 650 0, 0, 0, 0,
509 coro_cv_free 651 coro_cv_free
510}; 652};
511 653
512/* the next two functions merely cache the padlists */ 654/* the next two functions merely cache the padlists */
513static void 655ecb_inline void
514get_padlist (pTHX_ CV *cv) 656get_padlist (pTHX_ CV *cv)
515{ 657{
516 MAGIC *mg = CORO_MAGIC_cv (cv); 658 MAGIC *mg = CORO_MAGIC_cv (cv);
517 AV *av; 659 size_t *lenp;
518 660
519 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 661 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
520 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 662 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
521 else 663 else
522 { 664 {
523#if CORO_PREFER_PERL_FUNCTIONS 665#if CORO_PREFER_PERL_FUNCTIONS
524 /* this is probably cleaner? but also slower! */ 666 /* this is probably cleaner? but also slower! */
525 /* in practise, it seems to be less stable */ 667 /* in practise, it seems to be less stable */
… …
531 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 673 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
532#endif 674#endif
533 } 675 }
534} 676}
535 677
536static void 678ecb_inline void
537put_padlist (pTHX_ CV *cv) 679put_padlist (pTHX_ CV *cv)
538{ 680{
539 MAGIC *mg = CORO_MAGIC_cv (cv); 681 MAGIC *mg = CORO_MAGIC_cv (cv);
540 AV *av;
541 682
542 if (expect_false (!mg)) 683 if (ecb_expect_false (!mg))
684 {
543 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 685 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
686 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
687 mg->mg_len = 1; /* so mg_free frees mg_ptr */
688 }
689 else
690 Renew (mg->mg_ptr,
691 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
692 char);
544 693
545 av = (AV *)mg->mg_obj; 694 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
546
547 if (expect_false (AvFILLp (av) >= AvMAX (av)))
548 av_extend (av, AvFILLp (av) + 1);
549
550 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
551} 695}
552 696
553/** load & save, init *******************************************************/ 697/** load & save, init *******************************************************/
698
699ecb_inline void
700swap_sv (SV *a, SV *b)
701{
702 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
703 SV tmp;
704
705 /* swap sv_any */
706 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
707
708 /* swap sv_flags */
709 SvFLAGS (&tmp) = SvFLAGS (a);
710 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
711 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
712
713#if PERL_VERSION_ATLEAST (5,10,0)
714 /* perl 5.10 and later complicates this _quite_ a bit, but it also
715 * is much faster, so no quarrels here. alternatively, we could
716 * sv_upgrade to avoid this.
717 */
718 {
719 /* swap sv_u */
720 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
721
722 /* if SvANY points to the head, we need to adjust the pointers,
723 * as the pointer for a still points to b, and maybe vice versa.
724 */
725 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
726 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
727 svany_in_head_set |= 1 << SVt_NV;
728 #endif
729
730 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
731
732 if (svany_in_head (SvTYPE (a)))
733 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
734
735 if (svany_in_head (SvTYPE (b)))
736 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
737 }
738#endif
739}
740
741/* swap sv heads, at least logically */
742static void
743swap_svs_enter (pTHX_ Coro__State c)
744{
745 int i;
746
747 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
748 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
749}
750
751static void
752swap_svs_leave (pTHX_ Coro__State c)
753{
754 int i;
755
756 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
757 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
758}
759
760#define SWAP_SVS_ENTER(coro) \
761 if (ecb_expect_false ((coro)->swap_sv)) \
762 swap_svs_enter (aTHX_ (coro))
763
764#define SWAP_SVS_LEAVE(coro) \
765 if (ecb_expect_false ((coro)->swap_sv)) \
766 swap_svs_leave (aTHX_ (coro))
554 767
555static void 768static void
556on_enterleave_call (pTHX_ SV *cb); 769on_enterleave_call (pTHX_ SV *cb);
557 770
558static void 771static void
… …
561 perl_slots *slot = c->slot; 774 perl_slots *slot = c->slot;
562 c->slot = 0; 775 c->slot = 0;
563 776
564 PL_mainstack = c->mainstack; 777 PL_mainstack = c->mainstack;
565 778
566 GvSV (PL_defgv) = slot->defsv; 779#if CORO_JIT
567 GvAV (PL_defgv) = slot->defav; 780 load_perl_slots (slot);
568 GvSV (PL_errgv) = slot->errsv; 781#else
569 GvSV (irsgv) = slot->irsgv;
570 GvHV (PL_hintgv) = slot->hinthv;
571
572 #define VAR(name,type) PL_ ## name = slot->name; 782 #define VARx(name,expr,type) expr = slot->name;
573 # include "state.h" 783 #include "state.h"
574 #undef VAR 784#endif
575 785
576 { 786 {
577 dSP; 787 dSP;
578 788
579 CV *cv; 789 CV *cv;
580 790
581 /* now do the ugly restore mess */ 791 /* now do the ugly restore mess */
582 while (expect_true (cv = (CV *)POPs)) 792 while (ecb_expect_true (cv = (CV *)POPs))
583 { 793 {
584 put_padlist (aTHX_ cv); /* mark this padlist as available */ 794 put_padlist (aTHX_ cv); /* mark this padlist as available */
585 CvDEPTH (cv) = PTR2IV (POPs); 795 CvDEPTH (cv) = PTR2IV (POPs);
586 CvPADLIST (cv) = (AV *)POPs; 796 CvPADLIST (cv) = (PADLIST *)POPs;
587 } 797 }
588 798
589 PUTBACK; 799 PUTBACK;
590 } 800 }
591 801
592 slf_frame = c->slf_frame; 802 slf_frame = c->slf_frame;
593 CORO_THROW = c->except; 803 CORO_THROW = c->except;
594 804
595 if (expect_false (enable_times)) 805 if (ecb_expect_false (enable_times))
596 { 806 {
597 if (expect_false (!times_valid)) 807 if (ecb_expect_false (!times_valid))
598 coro_times_update (); 808 coro_times_update ();
599 809
600 coro_times_sub (c); 810 coro_times_sub (c);
601 } 811 }
602 812
603 if (expect_false (c->on_enter)) 813 if (ecb_expect_false (c->on_enter))
604 { 814 {
605 int i; 815 int i;
606 816
607 for (i = 0; i <= AvFILLp (c->on_enter); ++i) 817 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
608 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); 818 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
609 } 819 }
820
821 if (ecb_expect_false (c->on_enter_xs))
822 {
823 int i;
824
825 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
826 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
827 }
828
829 SWAP_SVS_ENTER (c);
610} 830}
611 831
612static void 832static void
613save_perl (pTHX_ Coro__State c) 833save_perl (pTHX_ Coro__State c)
614{ 834{
835 SWAP_SVS_LEAVE (c);
836
837 if (ecb_expect_false (c->on_leave_xs))
838 {
839 int i;
840
841 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
842 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
843 }
844
615 if (expect_false (c->on_leave)) 845 if (ecb_expect_false (c->on_leave))
616 { 846 {
617 int i; 847 int i;
618 848
619 for (i = AvFILLp (c->on_leave); i >= 0; --i) 849 for (i = AvFILLp (c->on_leave); i >= 0; --i)
620 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); 850 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
621 } 851 }
622 852
623 times_valid = 0; 853 times_valid = 0;
624 854
625 if (expect_false (enable_times)) 855 if (ecb_expect_false (enable_times))
626 { 856 {
627 coro_times_update (); times_valid = 1; 857 coro_times_update (); times_valid = 1;
628 coro_times_add (c); 858 coro_times_add (c);
629 } 859 }
630 860
… …
644 874
645 XPUSHs (Nullsv); 875 XPUSHs (Nullsv);
646 /* this loop was inspired by pp_caller */ 876 /* this loop was inspired by pp_caller */
647 for (;;) 877 for (;;)
648 { 878 {
649 while (expect_true (cxix >= 0)) 879 while (ecb_expect_true (cxix >= 0))
650 { 880 {
651 PERL_CONTEXT *cx = &ccstk[cxix--]; 881 PERL_CONTEXT *cx = &ccstk[cxix--];
652 882
653 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) 883 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
654 { 884 {
655 CV *cv = cx->blk_sub.cv; 885 CV *cv = cx->blk_sub.cv;
656 886
657 if (expect_true (CvDEPTH (cv))) 887 if (ecb_expect_true (CvDEPTH (cv)))
658 { 888 {
659 EXTEND (SP, 3); 889 EXTEND (SP, 3);
660 PUSHs ((SV *)CvPADLIST (cv)); 890 PUSHs ((SV *)CvPADLIST (cv));
661 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 891 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
662 PUSHs ((SV *)cv); 892 PUSHs ((SV *)cv);
… …
665 get_padlist (aTHX_ cv); 895 get_padlist (aTHX_ cv);
666 } 896 }
667 } 897 }
668 } 898 }
669 899
670 if (expect_true (top_si->si_type == PERLSI_MAIN)) 900 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
671 break; 901 break;
672 902
673 top_si = top_si->si_prev; 903 top_si = top_si->si_prev;
674 ccstk = top_si->si_cxstack; 904 ccstk = top_si->si_cxstack;
675 cxix = top_si->si_cxix; 905 cxix = top_si->si_cxix;
… …
677 907
678 PUTBACK; 908 PUTBACK;
679 } 909 }
680 910
681 /* allocate some space on the context stack for our purposes */ 911 /* allocate some space on the context stack for our purposes */
682 /* we manually unroll here, as usually 2 slots is enough */ 912 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
683 if (SLOT_COUNT >= 1) CXINC;
684 if (SLOT_COUNT >= 2) CXINC;
685 if (SLOT_COUNT >= 3) CXINC;
686 { 913 {
687 unsigned int i; 914 unsigned int i;
915
688 for (i = 3; i < SLOT_COUNT; ++i) 916 for (i = 0; i < SLOT_COUNT; ++i)
689 CXINC; 917 CXINC;
690 } 918
691 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 919 cxstack_ix -= SLOT_COUNT; /* undo allocation */
920 }
692 921
693 c->mainstack = PL_mainstack; 922 c->mainstack = PL_mainstack;
694 923
695 { 924 {
696 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 925 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
697 926
698 slot->defav = GvAV (PL_defgv); 927#if CORO_JIT
699 slot->defsv = DEFSV; 928 save_perl_slots (slot);
700 slot->errsv = ERRSV; 929#else
701 slot->irsgv = GvSV (irsgv);
702 slot->hinthv = GvHV (PL_hintgv);
703
704 #define VAR(name,type) slot->name = PL_ ## name; 930 #define VARx(name,expr,type) slot->name = expr;
705 # include "state.h" 931 #include "state.h"
706 #undef VAR 932#endif
707 } 933 }
708} 934}
709 935
710/* 936/*
711 * allocate various perl stacks. This is almost an exact copy 937 * allocate various perl stacks. This is almost an exact copy
… …
717# define coro_init_stacks(thx) init_stacks () 943# define coro_init_stacks(thx) init_stacks ()
718#else 944#else
719static void 945static void
720coro_init_stacks (pTHX) 946coro_init_stacks (pTHX)
721{ 947{
722 PL_curstackinfo = new_stackinfo(32, 8); 948 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
723 PL_curstackinfo->si_type = PERLSI_MAIN; 949 PL_curstackinfo->si_type = PERLSI_MAIN;
724 PL_curstack = PL_curstackinfo->si_stack; 950 PL_curstack = PL_curstackinfo->si_stack;
725 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 951 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
726 952
727 PL_stack_base = AvARRAY(PL_curstack); 953 PL_stack_base = AvARRAY(PL_curstack);
… …
742#endif 968#endif
743 969
744 New(54,PL_scopestack,8,I32); 970 New(54,PL_scopestack,8,I32);
745 PL_scopestack_ix = 0; 971 PL_scopestack_ix = 0;
746 PL_scopestack_max = 8; 972 PL_scopestack_max = 8;
973#if HAS_SCOPESTACK_NAME
974 New(54,PL_scopestack_name,8,const char*);
975#endif
747 976
748 New(54,PL_savestack,24,ANY); 977 New(54,PL_savestack,24,ANY);
749 PL_savestack_ix = 0; 978 PL_savestack_ix = 0;
750 PL_savestack_max = 24; 979 PL_savestack_max = 24;
980#if PERL_VERSION_ATLEAST (5,24,0)
981 /* perl 5.24 moves SS_MAXPUSH optimisation from */
982 /* the header macros to PL_savestack_max */
983 PL_savestack_max -= SS_MAXPUSH;
984#endif
751 985
752#if !PERL_VERSION_ATLEAST (5,10,0) 986#if !PERL_VERSION_ATLEAST (5,10,0)
753 New(54,PL_retstack,4,OP*); 987 New(54,PL_retstack,4,OP*);
754 PL_retstack_ix = 0; 988 PL_retstack_ix = 0;
755 PL_retstack_max = 4; 989 PL_retstack_max = 4;
… …
779 } 1013 }
780 1014
781 Safefree (PL_tmps_stack); 1015 Safefree (PL_tmps_stack);
782 Safefree (PL_markstack); 1016 Safefree (PL_markstack);
783 Safefree (PL_scopestack); 1017 Safefree (PL_scopestack);
1018#if HAS_SCOPESTACK_NAME
1019 Safefree (PL_scopestack_name);
1020#endif
784 Safefree (PL_savestack); 1021 Safefree (PL_savestack);
785#if !PERL_VERSION_ATLEAST (5,10,0) 1022#if !PERL_VERSION_ATLEAST (5,10,0)
786 Safefree (PL_retstack); 1023 Safefree (PL_retstack);
787#endif 1024#endif
788} 1025}
… …
818 } 1055 }
819 1056
820 return rss; 1057 return rss;
821} 1058}
822 1059
823/** coroutine stack handling ************************************************/ 1060/** provide custom get/set/clear methods for %SIG elements ******************/
824
825static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
826static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
827static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
828 1061
829/* apparently < 5.8.8 */ 1062/* apparently < 5.8.8 */
830#ifndef MgPV_nolen_const 1063#ifndef MgPV_nolen_const
831#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1064#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
832 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1065 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
833 (const char*)(mg)->mg_ptr) 1066 (const char*)(mg)->mg_ptr)
834#endif 1067#endif
835 1068
1069/* this will be a patched copy of PL_vtbl_sigelem */
1070static MGVTBL coro_sigelem_vtbl;
1071
1072static int ecb_cold
1073coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1074{
1075 char *key = SvPV_nolen ((SV *)name);
1076
1077 /* do what mg_copy normally does */
1078 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1079 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1080
1081 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1082 if (*key == '_'
1083 && (strEQ (key, "__DIE__")
1084 || strEQ (key, "__WARN__")))
1085 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1086
1087 return 1;
1088}
1089
1090/* perl does not have a %SIG vtbl, we provide one so we can override */
1091/* the magic vtbl for the __DIE__ and __WARN__ members */
1092static const MGVTBL coro_sig_vtbl = {
1093 0, 0, 0, 0, 0,
1094 coro_sig_copy
1095};
1096
836/* 1097/*
837 * This overrides the default magic get method of %SIG elements. 1098 * This overrides the default magic get method of %SIG elements.
838 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1099 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
839 * and instead of trying to save and restore the hash elements, we just provide 1100 * and instead of trying to save and restore the hash elements (extremely slow),
840 * readback here. 1101 * we just provide our own readback here.
841 */ 1102 */
842static int 1103static int ecb_cold
843coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1104coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
844{ 1105{
845 const char *s = MgPV_nolen_const (mg); 1106 const char *s = MgPV_nolen_const (mg);
1107 /* the key must be either __DIE__ or __WARN__ here */
1108 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
846 1109
847 if (*s == '_') 1110 SV *ssv;
848 {
849 SV **svp = 0;
850 1111
851 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
852 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
853
854 if (svp) 1112 if (!*svp)
855 { 1113 ssv = &PL_sv_undef;
856 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1114 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
857 return 0; 1115 ssv = sv_2mortal (newRV_inc (*svp));
858 } 1116 else
859 } 1117 ssv = *svp;
860 1118
861 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1119 sv_setsv (sv, ssv);
1120 return 0;
862} 1121}
863 1122
864static int 1123static int ecb_cold
865coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1124coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
866{ 1125{
867 const char *s = MgPV_nolen_const (mg); 1126 const char *s = MgPV_nolen_const (mg);
1127 /* the key must be either __DIE__ or __WARN__ here */
1128 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
868 1129
869 if (*s == '_')
870 {
871 SV **svp = 0;
872
873 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
874 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
875
876 if (svp)
877 {
878 SV *old = *svp; 1130 SV *old = *svp;
879 *svp = 0; 1131 *svp = 0;
880 SvREFCNT_dec (old); 1132 SvREFCNT_dec (old);
881 return 0; 1133 return 0;
882 }
883 }
884
885 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
886} 1134}
887 1135
888static int 1136static int ecb_cold
889coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1137coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
890{ 1138{
891 const char *s = MgPV_nolen_const (mg); 1139 const char *s = MgPV_nolen_const (mg);
1140 /* the key must be either __DIE__ or __WARN__ here */
1141 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
892 1142
893 if (*s == '_')
894 {
895 SV **svp = 0;
896
897 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
898 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
899
900 if (svp)
901 {
902 SV *old = *svp; 1143 SV *old = *svp;
903 *svp = SvOK (sv) ? newSVsv (sv) : 0; 1144 *svp = SvOK (sv) ? newSVsv (sv) : 0;
904 SvREFCNT_dec (old); 1145 SvREFCNT_dec (old);
905 return 0; 1146 return 0;
906 }
907 }
908
909 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
910} 1147}
911 1148
912static void 1149static void
913prepare_nop (pTHX_ struct coro_transfer_args *ta) 1150prepare_nop (pTHX_ struct coro_transfer_args *ta)
914{ 1151{
… …
926slf_check_repeat (pTHX_ struct CoroSLF *frame) 1163slf_check_repeat (pTHX_ struct CoroSLF *frame)
927{ 1164{
928 return 1; 1165 return 1;
929} 1166}
930 1167
931static UNOP coro_setup_op; 1168/** coroutine stack handling ************************************************/
932 1169
933static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1170static UNOP init_perl_op;
1171
1172ecb_noinline static void /* noinline to keep it out of the transfer fast path */
934coro_setup (pTHX_ struct coro *coro) 1173init_perl (pTHX_ struct coro *coro)
935{ 1174{
936 /* 1175 /*
937 * emulate part of the perl startup here. 1176 * emulate part of the perl startup here.
938 */ 1177 */
939 coro_init_stacks (aTHX); 1178 coro_init_stacks (aTHX);
… …
946 PL_comppad_name_fill = 0; 1185 PL_comppad_name_fill = 0;
947 PL_comppad_name_floor = 0; 1186 PL_comppad_name_floor = 0;
948 PL_curpm = 0; 1187 PL_curpm = 0;
949 PL_curpad = 0; 1188 PL_curpad = 0;
950 PL_localizing = 0; 1189 PL_localizing = 0;
951 PL_dirty = 0;
952 PL_restartop = 0; 1190 PL_restartop = 0;
953#if PERL_VERSION_ATLEAST (5,10,0) 1191#if PERL_VERSION_ATLEAST (5,10,0)
954 PL_parser = 0; 1192 PL_parser = 0;
955#endif 1193#endif
956 PL_hints = 0; 1194 PL_hints = 0;
957 1195
958 /* recreate the die/warn hooks */ 1196 /* recreate the die/warn hooks */
959 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1197 PL_diehook = SvREFCNT_inc (rv_diehook);
960 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1198 PL_warnhook = SvREFCNT_inc (rv_warnhook);
961 1199
962 GvSV (PL_defgv) = newSV (0); 1200 GvSV (PL_defgv) = newSV (0);
963 GvAV (PL_defgv) = coro->args; coro->args = 0; 1201 GvAV (PL_defgv) = coro->args; coro->args = 0;
964 GvSV (PL_errgv) = newSV (0); 1202 GvSV (PL_errgv) = newSV (0);
965 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1203 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
966 GvHV (PL_hintgv) = 0; 1204 GvHV (PL_hintgv) = newHV ();
1205#if PERL_VERSION_ATLEAST (5,10,0)
1206 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1207#endif
967 PL_rs = newSVsv (GvSV (irsgv)); 1208 PL_rs = newSVsv (GvSV (irsgv));
968 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1209 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
969 1210
970 { 1211 {
971 dSP; 1212 dSP;
… …
986 /* this newly created coroutine might be run on an existing cctx which most 1227 /* this newly created coroutine might be run on an existing cctx which most
987 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1228 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
988 */ 1229 */
989 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1230 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
990 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1231 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1232 slf_frame.destroy = 0;
991 1233
992 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1234 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
993 coro_setup_op.op_next = PL_op; 1235 init_perl_op.op_next = PL_op;
994 coro_setup_op.op_type = OP_ENTERSUB; 1236 init_perl_op.op_type = OP_ENTERSUB;
995 coro_setup_op.op_ppaddr = pp_slf; 1237 init_perl_op.op_ppaddr = pp_slf;
996 /* no flags etc. required, as an init function won't be called */ 1238 /* no flags etc. required, as an init function won't be called */
997 1239
998 PL_op = (OP *)&coro_setup_op; 1240 PL_op = (OP *)&init_perl_op;
999 1241
1000 /* copy throw, in case it was set before coro_setup */ 1242 /* copy throw, in case it was set before init_perl */
1001 CORO_THROW = coro->except; 1243 CORO_THROW = coro->except;
1002 1244
1245 SWAP_SVS_ENTER (coro);
1246
1003 if (expect_false (enable_times)) 1247 if (ecb_expect_false (enable_times))
1004 { 1248 {
1005 coro_times_update (); 1249 coro_times_update ();
1006 coro_times_sub (coro); 1250 coro_times_sub (coro);
1007 } 1251 }
1008} 1252}
… …
1027 dounwind (-1); 1271 dounwind (-1);
1028 } 1272 }
1029} 1273}
1030 1274
1031static void 1275static void
1032coro_destruct_perl (pTHX_ struct coro *coro) 1276destroy_perl (pTHX_ struct coro *coro)
1033{ 1277{
1034 SV *svf [9]; 1278 SV *svf [9];
1035 1279
1036 { 1280 {
1281 SV *old_current = SvRV (coro_current);
1037 struct coro *current = SvSTATE_current; 1282 struct coro *current = SvSTATE (old_current);
1038 1283
1039 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); 1284 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1040 1285
1041 save_perl (aTHX_ current); 1286 save_perl (aTHX_ current);
1287
1288 /* this will cause transfer_check to croak on block*/
1289 SvRV_set (coro_current, (SV *)coro->hv);
1290
1042 load_perl (aTHX_ coro); 1291 load_perl (aTHX_ coro);
1043 1292
1293 /* restore swapped sv's */
1294 SWAP_SVS_LEAVE (coro);
1295
1044 coro_unwind_stacks (aTHX); 1296 coro_unwind_stacks (aTHX);
1297
1045 coro_destruct_stacks (aTHX); 1298 coro_destruct_stacks (aTHX);
1046 1299
1047 // now save some sv's to be free'd later 1300 /* now save some sv's to be free'd later */
1048 svf [0] = GvSV (PL_defgv); 1301 svf [0] = GvSV (PL_defgv);
1049 svf [1] = (SV *)GvAV (PL_defgv); 1302 svf [1] = (SV *)GvAV (PL_defgv);
1050 svf [2] = GvSV (PL_errgv); 1303 svf [2] = GvSV (PL_errgv);
1051 svf [3] = (SV *)PL_defoutgv; 1304 svf [3] = (SV *)PL_defoutgv;
1052 svf [4] = PL_rs; 1305 svf [4] = PL_rs;
… …
1054 svf [6] = (SV *)GvHV (PL_hintgv); 1307 svf [6] = (SV *)GvHV (PL_hintgv);
1055 svf [7] = PL_diehook; 1308 svf [7] = PL_diehook;
1056 svf [8] = PL_warnhook; 1309 svf [8] = PL_warnhook;
1057 assert (9 == sizeof (svf) / sizeof (*svf)); 1310 assert (9 == sizeof (svf) / sizeof (*svf));
1058 1311
1312 SvRV_set (coro_current, old_current);
1313
1059 load_perl (aTHX_ current); 1314 load_perl (aTHX_ current);
1060 } 1315 }
1061 1316
1062 { 1317 {
1063 unsigned int i; 1318 unsigned int i;
… …
1067 1322
1068 SvREFCNT_dec (coro->saved_deffh); 1323 SvREFCNT_dec (coro->saved_deffh);
1069 SvREFCNT_dec (coro->rouse_cb); 1324 SvREFCNT_dec (coro->rouse_cb);
1070 SvREFCNT_dec (coro->invoke_cb); 1325 SvREFCNT_dec (coro->invoke_cb);
1071 SvREFCNT_dec (coro->invoke_av); 1326 SvREFCNT_dec (coro->invoke_av);
1327 SvREFCNT_dec (coro->on_enter_xs);
1328 SvREFCNT_dec (coro->on_leave_xs);
1072 } 1329 }
1073} 1330}
1074 1331
1075INLINE void 1332ecb_inline void
1076free_coro_mortal (pTHX) 1333free_coro_mortal (pTHX)
1077{ 1334{
1078 if (expect_true (coro_mortal)) 1335 if (ecb_expect_true (coro_mortal))
1079 { 1336 {
1080 SvREFCNT_dec (coro_mortal); 1337 SvREFCNT_dec ((SV *)coro_mortal);
1081 coro_mortal = 0; 1338 coro_mortal = 0;
1082 } 1339 }
1083} 1340}
1084 1341
1085static int 1342static int
… …
1139 1396
1140 if (PL_curcop != &PL_compiling) 1397 if (PL_curcop != &PL_compiling)
1141 { 1398 {
1142 SV **cb; 1399 SV **cb;
1143 1400
1144 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1401 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1145 { 1402 {
1146 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1403 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1147 1404
1148 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1405 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1149 { 1406 {
… …
1159 SAVETMPS; 1416 SAVETMPS;
1160 EXTEND (SP, 3); 1417 EXTEND (SP, 3);
1161 PUSHMARK (SP); 1418 PUSHMARK (SP);
1162 PUSHs (&PL_sv_yes); 1419 PUSHs (&PL_sv_yes);
1163 PUSHs (fullname); 1420 PUSHs (fullname);
1164 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1421 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1165 PUTBACK; 1422 PUTBACK;
1166 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1423 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1167 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1424 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1168 SPAGAIN; 1425 SPAGAIN;
1169 FREETMPS; 1426 FREETMPS;
… …
1218 1475
1219 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1476 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1220} 1477}
1221 1478
1222/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1479/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1223static void NOINLINE 1480static void ecb_noinline
1224cctx_prepare (pTHX) 1481cctx_prepare (pTHX)
1225{ 1482{
1226 PL_top_env = &PL_start_env; 1483 PL_top_env = &PL_start_env;
1227 1484
1228 if (cctx_current->flags & CC_TRACE) 1485 if (cctx_current->flags & CC_TRACE)
… …
1239 slf_frame.prepare = slf_prepare_set_stacklevel; 1496 slf_frame.prepare = slf_prepare_set_stacklevel;
1240 slf_frame.check = slf_check_set_stacklevel; 1497 slf_frame.check = slf_check_set_stacklevel;
1241} 1498}
1242 1499
1243/* the tail of transfer: execute stuff we can only do after a transfer */ 1500/* the tail of transfer: execute stuff we can only do after a transfer */
1244INLINE void 1501ecb_inline void
1245transfer_tail (pTHX) 1502transfer_tail (pTHX)
1246{ 1503{
1247 free_coro_mortal (aTHX); 1504 free_coro_mortal (aTHX);
1505}
1506
1507/* try to exit the same way perl's main function would do */
1508/* we do not bother resetting the environment or other things *7
1509/* that are not, uhm, essential */
1510/* this obviously also doesn't work when perl is embedded */
1511static void ecb_noinline ecb_cold
1512perlish_exit (pTHX)
1513{
1514 int exitstatus = perl_destruct (PL_curinterp);
1515 perl_free (PL_curinterp);
1516 exit (exitstatus);
1248} 1517}
1249 1518
1250/* 1519/*
1251 * this is a _very_ stripped down perl interpreter ;) 1520 * this is a _very_ stripped down perl interpreter ;)
1252 */ 1521 */
… …
1279 * coro body here, as perl_run destroys these. Likewise, we cannot catch 1548 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1280 * runtime errors here, as this is just a random interpreter, not a thread. 1549 * runtime errors here, as this is just a random interpreter, not a thread.
1281 */ 1550 */
1282 1551
1283 /* 1552 /*
1553 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1554 * requires PL_scopestack_ix, so do it here if required.
1555 */
1556 if (!PL_scopestack_ix)
1557 ENTER;
1558
1559 /*
1284 * If perl-run returns we assume exit() was being called or the coro 1560 * If perl-run returns we assume exit() was being called or the coro
1285 * fell off the end, which seems to be the only valid (non-bug) 1561 * fell off the end, which seems to be the only valid (non-bug)
1286 * reason for perl_run to return. We try to exit by jumping to the 1562 * reason for perl_run to return. We try to mimic whatever perl is normally
1287 * bootstrap-time "top" top_env, as we cannot restore the "main" 1563 * doing in that case. YMMV.
1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
1291 */ 1564 */
1292 PL_top_env = main_top_env; 1565 perlish_exit (aTHX);
1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1294 } 1566 }
1295} 1567}
1296 1568
1297static coro_cctx * 1569static coro_cctx *
1298cctx_new () 1570cctx_new (void)
1299{ 1571{
1300 coro_cctx *cctx; 1572 coro_cctx *cctx;
1301 1573
1302 ++cctx_count; 1574 ++cctx_count;
1303 New (0, cctx, 1, coro_cctx); 1575 New (0, cctx, 1, coro_cctx);
… …
1309 return cctx; 1581 return cctx;
1310} 1582}
1311 1583
1312/* create a new cctx only suitable as source */ 1584/* create a new cctx only suitable as source */
1313static coro_cctx * 1585static coro_cctx *
1314cctx_new_empty () 1586cctx_new_empty (void)
1315{ 1587{
1316 coro_cctx *cctx = cctx_new (); 1588 coro_cctx *cctx = cctx_new ();
1317 1589
1318 cctx->sptr = 0; 1590 cctx->stack.sptr = 0;
1319 coro_create (&cctx->cctx, 0, 0, 0, 0); 1591 coro_create (&cctx->cctx, 0, 0, 0, 0);
1320 1592
1321 return cctx; 1593 return cctx;
1322} 1594}
1323 1595
1324/* create a new cctx suitable as destination/running a perl interpreter */ 1596/* create a new cctx suitable as destination/running a perl interpreter */
1325static coro_cctx * 1597static coro_cctx *
1326cctx_new_run () 1598cctx_new_run (void)
1327{ 1599{
1328 coro_cctx *cctx = cctx_new (); 1600 coro_cctx *cctx = cctx_new ();
1329 void *stack_start;
1330 size_t stack_size;
1331 1601
1332#if HAVE_MMAP 1602 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1333 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1334 /* mmap supposedly does allocate-on-write for us */
1335 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1336
1337 if (cctx->sptr != (void *)-1)
1338 {
1339 #if CORO_STACKGUARD
1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1341 #endif
1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1344 cctx->flags |= CC_MAPPED;
1345 } 1603 {
1346 else
1347#endif
1348 {
1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1350 New (0, cctx->sptr, cctx_stacksize, long);
1351
1352 if (!cctx->sptr)
1353 {
1354 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1604 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1355 _exit (EXIT_FAILURE); 1605 _exit (EXIT_FAILURE);
1356 }
1357
1358 stack_start = cctx->sptr;
1359 stack_size = cctx->ssize;
1360 } 1606 }
1361 1607
1362 #if CORO_USE_VALGRIND
1363 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1364 #endif
1365
1366 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1608 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1367 1609
1368 return cctx; 1610 return cctx;
1369} 1611}
1370 1612
1371static void 1613static void
1372cctx_destroy (coro_cctx *cctx) 1614cctx_destroy (coro_cctx *cctx)
1373{ 1615{
1374 if (!cctx) 1616 if (!cctx)
1375 return; 1617 return;
1376 1618
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? 1619 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1378 1620
1379 --cctx_count; 1621 --cctx_count;
1380 coro_destroy (&cctx->cctx); 1622 coro_destroy (&cctx->cctx);
1381 1623
1382 /* coro_transfer creates new, empty cctx's */ 1624 coro_stack_free (&cctx->stack);
1383 if (cctx->sptr)
1384 {
1385 #if CORO_USE_VALGRIND
1386 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1387 #endif
1388
1389#if HAVE_MMAP
1390 if (cctx->flags & CC_MAPPED)
1391 munmap (cctx->sptr, cctx->ssize);
1392 else
1393#endif
1394 Safefree (cctx->sptr);
1395 }
1396 1625
1397 Safefree (cctx); 1626 Safefree (cctx);
1398} 1627}
1399 1628
1400/* wether this cctx should be destructed */ 1629/* wether this cctx should be destructed */
1401#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1630#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1402 1631
1403static coro_cctx * 1632static coro_cctx *
1404cctx_get (pTHX) 1633cctx_get (pTHX)
1405{ 1634{
1406 while (expect_true (cctx_first)) 1635 while (ecb_expect_true (cctx_first))
1407 { 1636 {
1408 coro_cctx *cctx = cctx_first; 1637 coro_cctx *cctx = cctx_first;
1409 cctx_first = cctx->next; 1638 cctx_first = cctx->next;
1410 --cctx_idle; 1639 --cctx_idle;
1411 1640
1412 if (expect_true (!CCTX_EXPIRED (cctx))) 1641 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1413 return cctx; 1642 return cctx;
1414 1643
1415 cctx_destroy (cctx); 1644 cctx_destroy (cctx);
1416 } 1645 }
1417 1646
… …
1419} 1648}
1420 1649
1421static void 1650static void
1422cctx_put (coro_cctx *cctx) 1651cctx_put (coro_cctx *cctx)
1423{ 1652{
1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1653 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1425 1654
1426 /* free another cctx if overlimit */ 1655 /* free another cctx if overlimit */
1427 if (expect_false (cctx_idle >= cctx_max_idle)) 1656 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1428 { 1657 {
1429 coro_cctx *first = cctx_first; 1658 coro_cctx *first = cctx_first;
1430 cctx_first = first->next; 1659 cctx_first = first->next;
1431 --cctx_idle; 1660 --cctx_idle;
1432 1661
… …
1443static void 1672static void
1444transfer_check (pTHX_ struct coro *prev, struct coro *next) 1673transfer_check (pTHX_ struct coro *prev, struct coro *next)
1445{ 1674{
1446 /* TODO: throwing up here is considered harmful */ 1675 /* TODO: throwing up here is considered harmful */
1447 1676
1448 if (expect_true (prev != next)) 1677 if (ecb_expect_true (prev != next))
1449 { 1678 {
1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1679 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); 1680 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1452 1681
1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) 1682 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); 1683 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1455 1684
1456#if !PERL_VERSION_ATLEAST (5,10,0) 1685#if !PERL_VERSION_ATLEAST (5,10,0)
1457 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1686 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1687 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1459#endif 1688#endif
1460 } 1689 }
1461} 1690}
1462 1691
1463/* always use the TRANSFER macro */ 1692/* always use the TRANSFER macro */
1464static void NOINLINE /* noinline so we have a fixed stackframe */ 1693static void ecb_noinline /* noinline so we have a fixed stackframe */
1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1694transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1466{ 1695{
1467 dSTACKLEVEL; 1696 dSTACKLEVEL;
1468 1697
1469 /* sometimes transfer is only called to set idle_sp */ 1698 /* sometimes transfer is only called to set idle_sp */
1470 if (expect_false (!prev)) 1699 if (ecb_expect_false (!prev))
1471 { 1700 {
1472 cctx_current->idle_sp = STACKLEVEL; 1701 cctx_current->idle_sp = STACKLEVEL;
1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1702 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1474 } 1703 }
1475 else if (expect_true (prev != next)) 1704 else if (ecb_expect_true (prev != next))
1476 { 1705 {
1477 coro_cctx *cctx_prev; 1706 coro_cctx *cctx_prev;
1478 1707
1479 if (expect_false (prev->flags & CF_NEW)) 1708 if (ecb_expect_false (prev->flags & CF_NEW))
1480 { 1709 {
1481 /* create a new empty/source context */ 1710 /* create a new empty/source context */
1482 prev->flags &= ~CF_NEW; 1711 prev->flags &= ~CF_NEW;
1483 prev->flags |= CF_RUNNING; 1712 prev->flags |= CF_RUNNING;
1484 } 1713 }
… …
1487 next->flags |= CF_RUNNING; 1716 next->flags |= CF_RUNNING;
1488 1717
1489 /* first get rid of the old state */ 1718 /* first get rid of the old state */
1490 save_perl (aTHX_ prev); 1719 save_perl (aTHX_ prev);
1491 1720
1492 if (expect_false (next->flags & CF_NEW)) 1721 if (ecb_expect_false (next->flags & CF_NEW))
1493 { 1722 {
1494 /* need to start coroutine */ 1723 /* need to start coroutine */
1495 next->flags &= ~CF_NEW; 1724 next->flags &= ~CF_NEW;
1496 /* setup coroutine call */ 1725 /* setup coroutine call */
1497 coro_setup (aTHX_ next); 1726 init_perl (aTHX_ next);
1498 } 1727 }
1499 else 1728 else
1500 load_perl (aTHX_ next); 1729 load_perl (aTHX_ next);
1501 1730
1502 /* possibly untie and reuse the cctx */ 1731 /* possibly untie and reuse the cctx */
1503 if (expect_true ( 1732 if (ecb_expect_true (
1504 cctx_current->idle_sp == STACKLEVEL 1733 cctx_current->idle_sp == STACKLEVEL
1505 && !(cctx_current->flags & CC_TRACE) 1734 && !(cctx_current->flags & CC_TRACE)
1506 && !force_cctx 1735 && !force_cctx
1507 )) 1736 ))
1508 { 1737 {
1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1738 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1739 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1511 1740
1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ 1741 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1513 /* without this the next cctx_get might destroy the running cctx while still in use */ 1742 /* without this the next cctx_get might destroy the running cctx while still in use */
1514 if (expect_false (CCTX_EXPIRED (cctx_current))) 1743 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1515 if (expect_true (!next->cctx)) 1744 if (ecb_expect_true (!next->cctx))
1516 next->cctx = cctx_get (aTHX); 1745 next->cctx = cctx_get (aTHX);
1517 1746
1518 cctx_put (cctx_current); 1747 cctx_put (cctx_current);
1519 } 1748 }
1520 else 1749 else
1521 prev->cctx = cctx_current; 1750 prev->cctx = cctx_current;
1522 1751
1523 ++next->usecount; 1752 ++next->usecount;
1524 1753
1525 cctx_prev = cctx_current; 1754 cctx_prev = cctx_current;
1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1755 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1527 1756
1528 next->cctx = 0; 1757 next->cctx = 0;
1529 1758
1530 if (expect_false (cctx_prev != cctx_current)) 1759 if (ecb_expect_false (cctx_prev != cctx_current))
1531 { 1760 {
1532 cctx_prev->top_env = PL_top_env; 1761 cctx_prev->top_env = PL_top_env;
1533 PL_top_env = cctx_current->top_env; 1762 PL_top_env = cctx_current->top_env;
1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1763 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1535 } 1764 }
… …
1541#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1770#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1771#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1543 1772
1544/** high level stuff ********************************************************/ 1773/** high level stuff ********************************************************/
1545 1774
1775/* this function is actually Coro, not Coro::State, but we call it from here */
1776/* because it is convenient - but it hasn't been declared yet for that reason */
1546static int 1777static void
1778coro_call_on_destroy (pTHX_ struct coro *coro);
1779
1780static void
1547coro_state_destroy (pTHX_ struct coro *coro) 1781coro_state_destroy (pTHX_ struct coro *coro)
1548{ 1782{
1549 if (coro->flags & CF_DESTROYED) 1783 if (coro->flags & CF_ZOMBIE)
1550 return 0; 1784 return;
1551 1785
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro); 1786 slf_destroy (aTHX_ coro);
1554 1787
1555 coro->flags |= CF_DESTROYED; 1788 coro->flags |= CF_ZOMBIE;
1556 1789
1557 if (coro->flags & CF_READY) 1790 if (coro->flags & CF_READY)
1558 { 1791 {
1559 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1792 /* reduce nready, as destroying a ready coro effectively unreadies it */
1560 /* alternative: look through all ready queues and remove the coro */ 1793 /* alternative: look through all ready queues and remove the coro */
1561 --coro_nready; 1794 --coro_nready;
1562 } 1795 }
1563 else 1796 else
1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1797 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1798
1799 if (coro->next) coro->next->prev = coro->prev;
1800 if (coro->prev) coro->prev->next = coro->next;
1801 if (coro == coro_first) coro_first = coro->next;
1565 1802
1566 if (coro->mainstack 1803 if (coro->mainstack
1567 && coro->mainstack != main_mainstack 1804 && coro->mainstack != main_mainstack
1568 && coro->slot 1805 && coro->slot
1569 && !PL_dirty) 1806 && !PL_dirty)
1570 coro_destruct_perl (aTHX_ coro); 1807 destroy_perl (aTHX_ coro);
1571 1808
1572 cctx_destroy (coro->cctx); 1809 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv); 1810 SvREFCNT_dec (coro->startcv);
1574 SvREFCNT_dec (coro->args); 1811 SvREFCNT_dec (coro->args);
1812 SvREFCNT_dec (coro->swap_sv);
1575 SvREFCNT_dec (CORO_THROW); 1813 SvREFCNT_dec (CORO_THROW);
1576 1814
1577 if (coro->next) coro->next->prev = coro->prev; 1815 coro_call_on_destroy (aTHX_ coro);
1578 if (coro->prev) coro->prev->next = coro->next;
1579 if (coro == coro_first) coro_first = coro->next;
1580 1816
1581 return 1; 1817 /* more destruction mayhem in coro_state_free */
1582} 1818}
1583 1819
1584static int 1820static int
1585coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1821coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1586{ 1822{
1587 struct coro *coro = (struct coro *)mg->mg_ptr; 1823 struct coro *coro = (struct coro *)mg->mg_ptr;
1588 mg->mg_ptr = 0; 1824 mg->mg_ptr = 0;
1589 1825
1590 coro->hv = 0;
1591
1592 if (--coro->refcnt < 0)
1593 {
1594 coro_state_destroy (aTHX_ coro); 1826 coro_state_destroy (aTHX_ coro);
1827 SvREFCNT_dec (coro->on_destroy);
1828 SvREFCNT_dec (coro->status);
1829
1595 Safefree (coro); 1830 Safefree (coro);
1596 }
1597 1831
1598 return 0; 1832 return 0;
1599} 1833}
1600 1834
1601static int 1835static int ecb_cold
1602coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1836coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1603{ 1837{
1604 struct coro *coro = (struct coro *)mg->mg_ptr; 1838 /* called when perl clones the current process the slow way (windows process emulation) */
1605 1839 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1606 ++coro->refcnt; 1840 mg->mg_ptr = 0;
1841 mg->mg_virtual = 0;
1607 1842
1608 return 0; 1843 return 0;
1609} 1844}
1610 1845
1611static MGVTBL coro_state_vtbl = { 1846static MGVTBL coro_state_vtbl = {
… …
1636 TRANSFER (ta, 1); 1871 TRANSFER (ta, 1);
1637} 1872}
1638 1873
1639/** Coro ********************************************************************/ 1874/** Coro ********************************************************************/
1640 1875
1641INLINE void 1876ecb_inline void
1642coro_enq (pTHX_ struct coro *coro) 1877coro_enq (pTHX_ struct coro *coro)
1643{ 1878{
1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; 1879 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1645 1880
1646 SvREFCNT_inc_NN (coro->hv); 1881 SvREFCNT_inc_NN (coro->hv);
… …
1648 coro->next_ready = 0; 1883 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; 1884 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro; 1885 ready [1] = coro;
1651} 1886}
1652 1887
1653INLINE struct coro * 1888ecb_inline struct coro *
1654coro_deq (pTHX) 1889coro_deq (pTHX)
1655{ 1890{
1656 int prio; 1891 int prio;
1657 1892
1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) 1893 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
… …
1711{ 1946{
1712 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1947 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1713} 1948}
1714 1949
1715/* expects to own a reference to next->hv */ 1950/* expects to own a reference to next->hv */
1716INLINE void 1951ecb_inline void
1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1952prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1718{ 1953{
1719 SV *prev_sv = SvRV (coro_current); 1954 SV *prev_sv = SvRV (coro_current);
1720 1955
1721 ta->prev = SvSTATE_hv (prev_sv); 1956 ta->prev = SvSTATE_hv (prev_sv);
… …
1734{ 1969{
1735 for (;;) 1970 for (;;)
1736 { 1971 {
1737 struct coro *next = coro_deq (aTHX); 1972 struct coro *next = coro_deq (aTHX);
1738 1973
1739 if (expect_true (next)) 1974 if (ecb_expect_true (next))
1740 { 1975 {
1741 /* cannot transfer to destroyed coros, skip and look for next */ 1976 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) 1977 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ 1978 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else 1979 else
1745 { 1980 {
1746 next->flags &= ~CF_READY; 1981 next->flags &= ~CF_READY;
1747 --coro_nready; 1982 --coro_nready;
… …
1754 { 1989 {
1755 /* nothing to schedule: call the idle handler */ 1990 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle) 1991 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle))) 1992 && SvOBJECT (SvRV (sv_idle)))
1758 { 1993 {
1994 if (SvRV (sv_idle) == SvRV (coro_current))
1995 {
1996 require_pv ("Carp");
1997
1998 {
1999 dSP;
2000
2001 ENTER;
2002 SAVETMPS;
2003
2004 PUSHMARK (SP);
2005 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2006 PUTBACK;
2007 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2008
2009 FREETMPS;
2010 LEAVE;
2011 }
2012 }
2013
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2014 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle)); 2015 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready; 2016 --coro_nready;
1762 } 2017 }
1763 else 2018 else
… …
1777 } 2032 }
1778 } 2033 }
1779 } 2034 }
1780} 2035}
1781 2036
1782INLINE void 2037ecb_inline void
1783prepare_cede (pTHX_ struct coro_transfer_args *ta) 2038prepare_cede (pTHX_ struct coro_transfer_args *ta)
1784{ 2039{
1785 api_ready (aTHX_ coro_current); 2040 api_ready (aTHX_ coro_current);
1786 prepare_schedule (aTHX_ ta); 2041 prepare_schedule (aTHX_ ta);
1787} 2042}
1788 2043
1789INLINE void 2044ecb_inline void
1790prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2045prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1791{ 2046{
1792 SV *prev = SvRV (coro_current); 2047 SV *prev = SvRV (coro_current);
1793 2048
1794 if (coro_nready) 2049 if (coro_nready)
… …
1824{ 2079{
1825 struct coro_transfer_args ta; 2080 struct coro_transfer_args ta;
1826 2081
1827 prepare_cede (aTHX_ &ta); 2082 prepare_cede (aTHX_ &ta);
1828 2083
1829 if (expect_true (ta.prev != ta.next)) 2084 if (ecb_expect_true (ta.prev != ta.next))
1830 { 2085 {
1831 TRANSFER (ta, 1); 2086 TRANSFER (ta, 1);
1832 return 1; 2087 return 1;
1833 } 2088 }
1834 else 2089 else
… …
1877 coro->slot->runops = RUNOPS_DEFAULT; 2132 coro->slot->runops = RUNOPS_DEFAULT;
1878 } 2133 }
1879} 2134}
1880 2135
1881static void 2136static void
2137coro_push_av (pTHX_ AV *av, I32 gimme_v)
2138{
2139 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2140 {
2141 dSP;
2142
2143 if (gimme_v == G_SCALAR)
2144 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2145 else
2146 {
2147 int i;
2148 EXTEND (SP, AvFILLp (av) + 1);
2149
2150 for (i = 0; i <= AvFILLp (av); ++i)
2151 PUSHs (AvARRAY (av)[i]);
2152 }
2153
2154 PUTBACK;
2155 }
2156}
2157
2158static void
2159coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2160{
2161 if (!coro->on_destroy)
2162 coro->on_destroy = newAV ();
2163
2164 av_push (coro->on_destroy, cb);
2165}
2166
2167static void
2168slf_destroy_join (pTHX_ struct CoroSLF *frame)
2169{
2170 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2171}
2172
2173static int
2174slf_check_join (pTHX_ struct CoroSLF *frame)
2175{
2176 struct coro *coro = (struct coro *)frame->data;
2177
2178 if (!coro->status)
2179 return 1;
2180
2181 frame->destroy = 0;
2182
2183 coro_push_av (aTHX_ coro->status, GIMME_V);
2184
2185 SvREFCNT_dec ((SV *)coro->hv);
2186
2187 return 0;
2188}
2189
2190static void
2191slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2192{
2193 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2194
2195 if (items > 1)
2196 croak ("join called with too many arguments");
2197
2198 if (coro->status)
2199 frame->prepare = prepare_nop;
2200 else
2201 {
2202 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2203 frame->prepare = prepare_schedule;
2204 }
2205
2206 frame->check = slf_check_join;
2207 frame->destroy = slf_destroy_join;
2208 frame->data = (void *)coro;
2209 SvREFCNT_inc (coro->hv);
2210}
2211
2212static void
1882coro_call_on_destroy (pTHX_ struct coro *coro) 2213coro_call_on_destroy (pTHX_ struct coro *coro)
1883{ 2214{
1884 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2215 AV *od = coro->on_destroy;
1885 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1886 2216
1887 if (on_destroyp) 2217 if (!od)
1888 { 2218 return;
1889 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1890 2219
2220 coro->on_destroy = 0;
2221 sv_2mortal ((SV *)od);
2222
1891 while (AvFILLp (on_destroy) >= 0) 2223 while (AvFILLp (od) >= 0)
2224 {
2225 SV *cb = sv_2mortal (av_pop (od));
2226
2227 /* coro hv's (and only hv's at the moment) are supported as well */
2228 if (SvSTATEhv_p (aTHX_ cb))
2229 api_ready (aTHX_ cb);
2230 else
1892 { 2231 {
1893 dSP; /* don't disturb outer sp */ 2232 dSP; /* don't disturb outer sp */
1894 SV *cb = av_pop (on_destroy);
1895
1896 PUSHMARK (SP); 2233 PUSHMARK (SP);
1897 2234
1898 if (statusp) 2235 if (coro->status)
1899 { 2236 {
1900 int i; 2237 PUTBACK;
1901 AV *status = (AV *)SvRV (*statusp); 2238 coro_push_av (aTHX_ coro->status, G_ARRAY);
1902 EXTEND (SP, AvFILLp (status) + 1); 2239 SPAGAIN;
1903
1904 for (i = 0; i <= AvFILLp (status); ++i)
1905 PUSHs (AvARRAY (status)[i]);
1906 } 2240 }
1907 2241
1908 PUTBACK; 2242 PUTBACK;
1909 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2243 call_sv (cb, G_VOID | G_DISCARD);
1910 } 2244 }
1911 } 2245 }
1912} 2246}
1913 2247
1914static void 2248static void
1915slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2249coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1916{ 2250{
1917 int i; 2251 AV *av;
1918 HV *hv = (HV *)SvRV (coro_current); 2252
1919 AV *av = newAV (); 2253 if (coro->status)
2254 {
2255 av = coro->status;
2256 av_clear (av);
2257 }
2258 else
2259 av = coro->status = newAV ();
1920 2260
1921 /* items are actually not so common, so optimise for this case */ 2261 /* items are actually not so common, so optimise for this case */
1922 if (items) 2262 if (items)
1923 { 2263 {
2264 int i;
2265
1924 av_extend (av, items - 1); 2266 av_extend (av, items - 1);
1925 2267
1926 for (i = 0; i < items; ++i) 2268 for (i = 0; i < items; ++i)
1927 av_push (av, SvREFCNT_inc_NN (arg [i])); 2269 av_push (av, SvREFCNT_inc_NN (arg [i]));
1928 } 2270 }
2271}
1929 2272
1930 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2273static void
1931 2274slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2275{
1932 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2276 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1933 api_ready (aTHX_ sv_manager); 2277 api_ready (aTHX_ sv_manager);
1934 2278
1935 frame->prepare = prepare_schedule; 2279 frame->prepare = prepare_schedule;
1936 frame->check = slf_check_repeat; 2280 frame->check = slf_check_repeat;
1937 2281
1938 /* as a minor optimisation, we could unwind all stacks here */ 2282 /* as a minor optimisation, we could unwind all stacks here */
1939 /* but that puts extra pressure on pp_slf, and is not worth much */ 2283 /* but that puts extra pressure on pp_slf, and is not worth much */
1940 /*coro_unwind_stacks (aTHX);*/ 2284 /*coro_unwind_stacks (aTHX);*/
2285}
2286
2287static void
2288slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2289{
2290 HV *coro_hv = (HV *)SvRV (coro_current);
2291
2292 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2293 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2294}
2295
2296static void
2297slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298{
2299 HV *coro_hv;
2300 struct coro *coro;
2301
2302 if (items <= 0)
2303 croak ("Coro::cancel called without coro object,");
2304
2305 coro = SvSTATE (arg [0]);
2306 coro_hv = coro->hv;
2307
2308 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2309
2310 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2311 {
2312 /* coro currently busy cancelling something, so just notify it */
2313 coro->slf_frame.data = (void *)coro;
2314
2315 frame->prepare = prepare_nop;
2316 frame->check = slf_check_nop;
2317 }
2318 else if (coro_hv == (HV *)SvRV (coro_current))
2319 {
2320 /* cancelling the current coro is allowed, and equals terminate */
2321 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2322 }
2323 else
2324 {
2325 struct coro *self = SvSTATE_current;
2326
2327 if (!self)
2328 croak ("Coro::cancel called outside of thread content,");
2329
2330 /* otherwise we cancel directly, purely for speed reasons
2331 * unfortunately, this requires some magic trickery, as
2332 * somebody else could cancel us, so we have to fight the cancellation.
2333 * this is ugly, and hopefully fully worth the extra speed.
2334 * besides, I can't get the slow-but-safe version working...
2335 */
2336 slf_frame.data = 0;
2337 self->flags |= CF_NOCANCEL;
2338 coro_state_destroy (aTHX_ coro);
2339 self->flags &= ~CF_NOCANCEL;
2340
2341 if (slf_frame.data)
2342 {
2343 /* while we were busy we have been cancelled, so terminate */
2344 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2345 }
2346 else
2347 {
2348 frame->prepare = prepare_nop;
2349 frame->check = slf_check_nop;
2350 }
2351 }
2352}
2353
2354static int
2355slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2356{
2357 frame->prepare = 0;
2358 coro_unwind_stacks (aTHX);
2359
2360 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2361
2362 return 1;
2363}
2364
2365static int
2366safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2367{
2368 if (coro->cctx)
2369 croak ("coro inside C callback, unable to cancel at this time, caught");
2370
2371 if (coro->flags & CF_NEW)
2372 {
2373 coro_set_status (aTHX_ coro, arg, items);
2374 coro_state_destroy (aTHX_ coro);
2375 }
2376 else
2377 {
2378 if (!coro->slf_frame.prepare)
2379 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2380
2381 slf_destroy (aTHX_ coro);
2382
2383 coro_set_status (aTHX_ coro, arg, items);
2384 coro->slf_frame.prepare = prepare_nop;
2385 coro->slf_frame.check = slf_check_safe_cancel;
2386
2387 api_ready (aTHX_ (SV *)coro->hv);
2388 }
2389
2390 return 1;
1941} 2391}
1942 2392
1943/*****************************************************************************/ 2393/*****************************************************************************/
1944/* async pool handler */ 2394/* async pool handler */
1945 2395
… …
1976slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2426slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1977{ 2427{
1978 HV *hv = (HV *)SvRV (coro_current); 2428 HV *hv = (HV *)SvRV (coro_current);
1979 struct coro *coro = SvSTATE_hv ((SV *)hv); 2429 struct coro *coro = SvSTATE_hv ((SV *)hv);
1980 2430
1981 if (expect_true (coro->saved_deffh)) 2431 if (ecb_expect_true (coro->saved_deffh))
1982 { 2432 {
1983 /* subsequent iteration */ 2433 /* subsequent iteration */
1984 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2434 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1985 coro->saved_deffh = 0; 2435 coro->saved_deffh = 0;
1986 2436
1987 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2437 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1988 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2438 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1989 { 2439 {
1990 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2440 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1991 coro->invoke_av = newAV (); 2441 return;
1992
1993 frame->prepare = prepare_nop;
1994 } 2442 }
1995 else 2443 else
1996 { 2444 {
1997 av_clear (GvAV (PL_defgv)); 2445 av_clear (GvAV (PL_defgv));
1998 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2446 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1999 2447
2448 if (ecb_expect_false (coro->swap_sv))
2449 {
2450 SWAP_SVS_LEAVE (coro);
2451 SvREFCNT_dec_NN (coro->swap_sv);
2452 coro->swap_sv = 0;
2453 }
2454
2000 coro->prio = 0; 2455 coro->prio = 0;
2001 2456
2002 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2457 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2003 api_trace (aTHX_ coro_current, 0); 2458 api_trace (aTHX_ coro_current, 0);
2004 2459
2005 frame->prepare = prepare_schedule; 2460 frame->prepare = prepare_schedule;
2006 av_push (av_async_pool, SvREFCNT_inc (hv)); 2461 av_push (av_async_pool, SvREFCNT_inc (hv));
2007 } 2462 }
… …
2048 2503
2049static int 2504static int
2050slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2505slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2051{ 2506{
2052 SV *data = (SV *)frame->data; 2507 SV *data = (SV *)frame->data;
2053 2508
2054 if (CORO_THROW) 2509 if (CORO_THROW)
2055 return 0; 2510 return 0;
2056 2511
2057 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2512 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2058 return 1; 2513 return 1;
… …
2094 cb = sv_2mortal (coro->rouse_cb); 2549 cb = sv_2mortal (coro->rouse_cb);
2095 coro->rouse_cb = 0; 2550 coro->rouse_cb = 0;
2096 } 2551 }
2097 2552
2098 if (!SvROK (cb) 2553 if (!SvROK (cb)
2099 || SvTYPE (SvRV (cb)) != SVt_PVCV 2554 || SvTYPE (SvRV (cb)) != SVt_PVCV
2100 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2555 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2101 croak ("Coro::rouse_wait called with illegal callback argument,"); 2556 croak ("Coro::rouse_wait called with illegal callback argument,");
2102 2557
2103 { 2558 {
2104 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ 2559 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
… …
2221static void 2676static void
2222slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2677slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2223{ 2678{
2224 frame->prepare = prepare_cede_notself; 2679 frame->prepare = prepare_cede_notself;
2225 frame->check = slf_check_nop; 2680 frame->check = slf_check_nop;
2681}
2682
2683/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2684static void
2685slf_destroy (pTHX_ struct coro *coro)
2686{
2687 struct CoroSLF frame = coro->slf_frame;
2688
2689 /*
2690 * The on_destroy below most likely is from an SLF call.
2691 * Since by definition the SLF call will not finish when we destroy
2692 * the coro, we will have to force-finish it here, otherwise
2693 * cleanup functions cannot call SLF functions.
2694 */
2695 coro->slf_frame.prepare = 0;
2696
2697 /* this callback is reserved for slf functions needing to do cleanup */
2698 if (frame.destroy && frame.prepare && !PL_dirty)
2699 frame.destroy (aTHX_ &frame);
2226} 2700}
2227 2701
2228/* 2702/*
2229 * these not obviously related functions are all rolled into one 2703 * these not obviously related functions are all rolled into one
2230 * function to increase chances that they all will call transfer with the same 2704 * 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 */ 2711 I32 checkmark; /* mark SP to see how many elements check has pushed */
2238 2712
2239 /* set up the slf frame, unless it has already been set-up */ 2713 /* set up the slf frame, unless it has already been set-up */
2240 /* the latter happens when a new coro has been started */ 2714 /* the latter happens when a new coro has been started */
2241 /* or when a new cctx was attached to an existing coroutine */ 2715 /* or when a new cctx was attached to an existing coroutine */
2242 if (expect_true (!slf_frame.prepare)) 2716 if (ecb_expect_true (!slf_frame.prepare))
2243 { 2717 {
2244 /* first iteration */ 2718 /* first iteration */
2245 dSP; 2719 dSP;
2246 SV **arg = PL_stack_base + TOPMARK + 1; 2720 SV **arg = PL_stack_base + TOPMARK + 1;
2247 int items = SP - arg; /* args without function object */ 2721 int items = SP - arg; /* args without function object */
… …
2288 while (slf_frame.check (aTHX_ &slf_frame)); 2762 while (slf_frame.check (aTHX_ &slf_frame));
2289 2763
2290 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2764 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2291 2765
2292 /* exception handling */ 2766 /* exception handling */
2293 if (expect_false (CORO_THROW)) 2767 if (ecb_expect_false (CORO_THROW))
2294 { 2768 {
2295 SV *exception = sv_2mortal (CORO_THROW); 2769 SV *exception = sv_2mortal (CORO_THROW);
2296 2770
2297 CORO_THROW = 0; 2771 CORO_THROW = 0;
2298 sv_setsv (ERRSV, exception); 2772 sv_setsv (ERRSV, exception);
2299 croak (0); 2773 croak (0);
2300 } 2774 }
2301 2775
2302 /* return value handling - mostly like entersub */ 2776 /* return value handling - mostly like entersub */
2303 /* make sure we put something on the stack in scalar context */ 2777 /* make sure we put something on the stack in scalar context */
2304 if (GIMME_V == G_SCALAR) 2778 if (GIMME_V == G_SCALAR
2779 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2305 { 2780 {
2306 dSP; 2781 dSP;
2307 SV **bot = PL_stack_base + checkmark; 2782 SV **bot = PL_stack_base + checkmark;
2308 2783
2309 if (sp == bot) /* too few, push undef */ 2784 if (sp == bot) /* too few, push undef */
2310 bot [1] = &PL_sv_undef; 2785 bot [1] = &PL_sv_undef;
2311 else if (sp != bot + 1) /* too many, take last one */ 2786 else /* too many, take last one */
2312 bot [1] = *sp; 2787 bot [1] = *sp;
2313 2788
2314 SP = bot + 1; 2789 SP = bot + 1;
2315 2790
2316 PUTBACK; 2791 PUTBACK;
… …
2331 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] 2806 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2332 && PL_op->op_ppaddr != pp_slf) 2807 && PL_op->op_ppaddr != pp_slf)
2333 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); 2808 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2334 2809
2335 CvFLAGS (cv) |= CVf_SLF; 2810 CvFLAGS (cv) |= CVf_SLF;
2336 CvNODEBUG_on (cv);
2337 CvXSUBANY (cv).any_ptr = (void *)init_cb; 2811 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2338 slf_cv = cv; 2812 slf_cv = cv;
2339 2813
2340 /* we patch the op, and then re-run the whole call */ 2814 /* we patch the op, and then re-run the whole call */
2341 /* we have to put the same argument on the stack for this to work */ 2815 /* we have to put the same argument on the stack for this to work */
… …
2350 if (PL_op->op_flags & OPf_STACKED) 2824 if (PL_op->op_flags & OPf_STACKED)
2351 { 2825 {
2352 if (items > slf_arga) 2826 if (items > slf_arga)
2353 { 2827 {
2354 slf_arga = items; 2828 slf_arga = items;
2355 free (slf_argv); 2829 Safefree (slf_argv);
2356 slf_argv = malloc (slf_arga * sizeof (SV *)); 2830 New (0, slf_argv, slf_arga, SV *);
2357 } 2831 }
2358 2832
2359 slf_argc = items; 2833 slf_argc = items;
2360 2834
2361 for (i = 0; i < items; ++i) 2835 for (i = 0; i < items; ++i)
… …
2415{ 2889{
2416 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); 2890 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2417 on_enterleave_call (aTHX_ sv_2mortal (cb)); 2891 on_enterleave_call (aTHX_ sv_2mortal (cb));
2418} 2892}
2419 2893
2894static void
2895enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2896{
2897 if (!hook)
2898 return;
2899
2900 if (!*avp)
2901 {
2902 *avp = newAV ();
2903 AvREAL_off (*avp);
2904 }
2905
2906 av_push (*avp, (SV *)hook);
2907 av_push (*avp, (SV *)arg);
2908}
2909
2910static void
2911enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2912{
2913 AV *av = *avp;
2914 int i;
2915
2916 if (!av)
2917 return;
2918
2919 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2920 if (AvARRAY (av)[i] == (SV *)hook)
2921 {
2922 if (execute)
2923 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2924
2925 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2926 av_pop (av);
2927 av_pop (av);
2928 break;
2929 }
2930
2931 if (AvFILLp (av) >= 0)
2932 {
2933 *avp = 0;
2934 SvREFCNT_dec_NN (av);
2935 }
2936}
2937
2938static void
2939api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2940{
2941 struct coro *coro = SvSTATE (coro_sv);
2942
2943 if (SvSTATE_current == coro)
2944 if (enter)
2945 enter (aTHX_ enter_arg);
2946
2947 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2948 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2949}
2950
2951static void
2952api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2953{
2954 struct coro *coro = SvSTATE (coro_sv);
2955
2956 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2957 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2958}
2959
2960static void
2961savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2962{
2963 struct coro *coro = SvSTATE_current;
2964
2965 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2966}
2967
2968static void
2969savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2970{
2971 struct coro *coro = SvSTATE_current;
2972
2973 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2974}
2975
2976static void
2977api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2978{
2979 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2980
2981 /* this ought to be much cheaper than malloc + a single destructor call */
2982 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2983 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2984}
2985
2420/*****************************************************************************/ 2986/*****************************************************************************/
2421/* PerlIO::cede */ 2987/* PerlIO::cede */
2422 2988
2423typedef struct 2989typedef struct
2424{ 2990{
2425 PerlIOBuf base; 2991 PerlIOBuf base;
2426 NV next, every; 2992 NV next, every;
2427} PerlIOCede; 2993} PerlIOCede;
2428 2994
2429static IV 2995static IV ecb_cold
2430PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2996PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2431{ 2997{
2432 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2998 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2433 2999
2434 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3000 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2435 self->next = nvtime () + self->every; 3001 self->next = nvtime () + self->every;
2436 3002
2437 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3003 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2438} 3004}
2439 3005
2440static SV * 3006static SV * ecb_cold
2441PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3007PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2442{ 3008{
2443 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3009 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2444 3010
2445 return newSVnv (self->every); 3011 return newSVnv (self->every);
… …
2552 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3118 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2553 PUTBACK; 3119 PUTBACK;
2554 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3120 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2555 } 3121 }
2556 3122
2557 SvREFCNT_dec (cb); 3123 SvREFCNT_dec_NN (cb);
2558 } 3124 }
2559} 3125}
2560 3126
2561static void 3127static void
2562coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3128coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2563{ 3129{
2564 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3130 /* call $sem->adjust (0) to possibly wake up some other waiters */
2565 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3131 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2566} 3132}
2567 3133
2568static int 3134static int
2569slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3135slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2570{ 3136{
2571 AV *av = (AV *)frame->data; 3137 AV *av = (AV *)frame->data;
2572 SV *count_sv = AvARRAY (av)[0]; 3138 SV *count_sv = AvARRAY (av)[0];
3139 SV *coro_hv = SvRV (coro_current);
3140
3141 frame->destroy = 0;
2573 3142
2574 /* if we are about to throw, don't actually acquire the lock, just throw */ 3143 /* if we are about to throw, don't actually acquire the lock, just throw */
2575 if (CORO_THROW) 3144 if (ecb_expect_false (CORO_THROW))
3145 {
3146 /* we still might be responsible for the semaphore, so wake up others */
3147 coro_semaphore_adjust (aTHX_ av, 0);
3148
2576 return 0; 3149 return 0;
3150 }
2577 else if (SvIVX (count_sv) > 0) 3151 else if (SvIVX (count_sv) > 0)
2578 { 3152 {
2579 SvSTATE_current->on_destroy = 0;
2580
2581 if (acquire) 3153 if (acquire)
2582 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3154 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2583 else 3155 else
2584 coro_semaphore_adjust (aTHX_ av, 0); 3156 coro_semaphore_adjust (aTHX_ av, 0);
2585 3157
… …
2589 { 3161 {
2590 int i; 3162 int i;
2591 /* if we were woken up but can't down, we look through the whole */ 3163 /* if we were woken up but can't down, we look through the whole */
2592 /* waiters list and only add us if we aren't in there already */ 3164 /* waiters list and only add us if we aren't in there already */
2593 /* this avoids some degenerate memory usage cases */ 3165 /* this avoids some degenerate memory usage cases */
2594 3166 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2595 for (i = 1; i <= AvFILLp (av); ++i)
2596 if (AvARRAY (av)[i] == SvRV (coro_current)) 3167 if (AvARRAY (av)[i] == coro_hv)
2597 return 1; 3168 return 1;
2598 3169
2599 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3170 av_push (av, SvREFCNT_inc (coro_hv));
2600 return 1; 3171 return 1;
2601 } 3172 }
2602} 3173}
2603 3174
2604static int 3175static int
… …
2627 { 3198 {
2628 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3199 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2629 3200
2630 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3201 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2631 frame->prepare = prepare_schedule; 3202 frame->prepare = prepare_schedule;
2632
2633 /* to avoid race conditions when a woken-up coro gets terminated */ 3203 /* to avoid race conditions when a woken-up coro gets terminated */
2634 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3204 /* we arrange for a temporary on_destroy that calls adjust (0) */
2635 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3205 frame->destroy = coro_semaphore_destroy;
2636 } 3206 }
2637} 3207}
2638 3208
2639static void 3209static void
2640slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3210slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2698 { 3268 {
2699 api_ready (aTHX_ cb); 3269 api_ready (aTHX_ cb);
2700 sv_setiv (cb, 0); /* signal waiter */ 3270 sv_setiv (cb, 0); /* signal waiter */
2701 } 3271 }
2702 3272
2703 SvREFCNT_dec (cb); 3273 SvREFCNT_dec_NN (cb);
2704 3274
2705 --count; 3275 --count;
2706 } 3276 }
2707} 3277}
2708 3278
… …
2722 { 3292 {
2723 SV *cb_cv = s_get_cv_croak (arg [1]); 3293 SV *cb_cv = s_get_cv_croak (arg [1]);
2724 av_push (av, SvREFCNT_inc_NN (cb_cv)); 3294 av_push (av, SvREFCNT_inc_NN (cb_cv));
2725 3295
2726 if (SvIVX (AvARRAY (av)[0])) 3296 if (SvIVX (AvARRAY (av)[0]))
2727 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */ 3297 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2728 3298
2729 frame->prepare = prepare_nop; 3299 frame->prepare = prepare_nop;
2730 frame->check = slf_check_nop; 3300 frame->check = slf_check_nop;
2731 } 3301 }
2732 else if (SvIVX (AvARRAY (av)[0])) 3302 else if (SvIVX (AvARRAY (av)[0]))
… …
2793 } 3363 }
2794 3364
2795 av_push (state, data_sv); 3365 av_push (state, data_sv);
2796 3366
2797 api_ready (aTHX_ coro); 3367 api_ready (aTHX_ coro);
2798 SvREFCNT_dec (coro); 3368 SvREFCNT_dec_NN (coro);
2799 SvREFCNT_dec ((AV *)state); 3369 SvREFCNT_dec_NN ((AV *)state);
2800} 3370}
2801 3371
2802static int 3372static int
2803slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3373slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2804{ 3374{
… …
2809 /* it quickly returns */ 3379 /* it quickly returns */
2810 if (CORO_THROW) 3380 if (CORO_THROW)
2811 return 0; 3381 return 0;
2812 3382
2813 /* one element that is an RV? repeat! */ 3383 /* one element that is an RV? repeat! */
2814 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3384 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2815 return 1; 3385 return 1;
2816 3386
2817 /* restore status */ 3387 /* restore status */
2818 { 3388 {
2819 SV *data_sv = av_pop (state); 3389 SV *data_sv = av_pop (state);
… …
2822 errno = data->errorno; 3392 errno = data->errorno;
2823 PL_laststype = data->laststype; 3393 PL_laststype = data->laststype;
2824 PL_laststatval = data->laststatval; 3394 PL_laststatval = data->laststatval;
2825 PL_statcache = data->statcache; 3395 PL_statcache = data->statcache;
2826 3396
2827 SvREFCNT_dec (data_sv); 3397 SvREFCNT_dec_NN (data_sv);
2828 } 3398 }
2829 3399
2830 /* push result values */ 3400 /* push result values */
2831 { 3401 {
2832 dSP; 3402 dSP;
… …
2858 dSP; 3428 dSP;
2859 3429
2860 static SV *prio_cv; 3430 static SV *prio_cv;
2861 static SV *prio_sv; 3431 static SV *prio_sv;
2862 3432
2863 if (expect_false (!prio_cv)) 3433 if (ecb_expect_false (!prio_cv))
2864 { 3434 {
2865 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3435 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2866 prio_sv = newSViv (0); 3436 prio_sv = newSViv (0);
2867 } 3437 }
2868 3438
… …
2894 /* now call the AIO function - we assume our request is uncancelable */ 3464 /* now call the AIO function - we assume our request is uncancelable */
2895 PUTBACK; 3465 PUTBACK;
2896 call_sv ((SV *)req, G_VOID | G_DISCARD); 3466 call_sv ((SV *)req, G_VOID | G_DISCARD);
2897 } 3467 }
2898 3468
2899 /* now that the requets is going, we loop toll we have a result */ 3469 /* now that the request is going, we loop till we have a result */
2900 frame->data = (void *)state; 3470 frame->data = (void *)state;
2901 frame->prepare = prepare_schedule; 3471 frame->prepare = prepare_schedule;
2902 frame->check = slf_check_aio_req; 3472 frame->check = slf_check_aio_req;
2903} 3473}
2904 3474
… …
2974 } 3544 }
2975 3545
2976 return coro_sv; 3546 return coro_sv;
2977} 3547}
2978 3548
3549#ifndef __cplusplus
3550ecb_cold XS(boot_Coro__State);
3551#endif
3552
3553#if CORO_JIT
3554
3555static void ecb_noinline ecb_cold
3556pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3557{
3558 dSP;
3559 AV *av = newAV ();
3560
3561 av_store (av, 3, newSVuv (d));
3562 av_store (av, 2, newSVuv (c));
3563 av_store (av, 1, newSVuv (b));
3564 av_store (av, 0, newSVuv (a));
3565
3566 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3567
3568 PUTBACK;
3569}
3570
3571static void ecb_noinline ecb_cold
3572jit_init (pTHX)
3573{
3574 dSP;
3575 SV *load, *save;
3576 char *map_base;
3577 char *load_ptr, *save_ptr;
3578 STRLEN load_len, save_len, map_len;
3579 int count;
3580
3581 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3582
3583 PUSHMARK (SP);
3584 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3585 #include "state.h"
3586 count = call_pv ("Coro::State::_jit", G_ARRAY);
3587 SPAGAIN;
3588
3589 save = POPs; save_ptr = SvPVbyte (save, save_len);
3590 load = POPs; load_ptr = SvPVbyte (load, load_len);
3591
3592 map_len = load_len + save_len + 16;
3593
3594 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3595
3596 if (map_base == (char *)MAP_FAILED)
3597 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3598
3599 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3600
3601 load_perl_slots = (load_save_perl_slots_type)map_base;
3602 memcpy (map_base, load_ptr, load_len);
3603
3604 map_base += (load_len + 15) & ~15;
3605
3606 save_perl_slots = (load_save_perl_slots_type)map_base;
3607 memcpy (map_base, save_ptr, save_len);
3608
3609 /* we are good citizens and try to make the page read-only, so the evil evil */
3610 /* hackers might have it a bit more difficult */
3611 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3612
3613 PUTBACK;
3614 eval_pv ("undef &Coro::State::_jit", 1);
3615}
3616
3617#endif
3618
2979MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3619MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2980 3620
2981PROTOTYPES: DISABLE 3621PROTOTYPES: DISABLE
2982 3622
2983BOOT: 3623BOOT:
2984{ 3624{
3625#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3626#include "state.h"
2985#ifdef USE_ITHREADS 3627#ifdef USE_ITHREADS
2986# if CORO_PTHREAD 3628# if CORO_PTHREAD
2987 coro_thx = PERL_GET_CONTEXT; 3629 coro_thx = PERL_GET_CONTEXT;
2988# endif 3630# endif
2989#endif 3631#endif
2990 BOOT_PAGESIZE; 3632 /* perl defines these to check for existance first, but why it doesn't */
3633 /* just create them one at init time is not clear to me, except for */
3634 /* programs trying to delete them, but... */
3635 /* anyway, we declare this as invalid and make sure they are initialised here */
3636 DEFSV;
3637 ERRSV;
2991 3638
2992 cctx_current = cctx_new_empty (); 3639 cctx_current = cctx_new_empty ();
2993 3640
2994 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3641 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2995 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3642 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2996 3643
2997 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3644 {
2998 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3645 /*
2999 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3646 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3647 * by coro_sig_vtbl in hash values.
3648 */
3649 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3650
3651 /* this only works if perl doesn't have a vtbl for %SIG */
3652 assert (!mg->mg_virtual);
3653
3654 /*
3655 * The irony is that the perl API itself asserts that mg_virtual
3656 * must be non-const, yet perl5porters insisted on marking their
3657 * vtbls as read-only, just to thwart perl modules from patching
3658 * them.
3659 */
3660 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3661 mg->mg_flags |= MGf_COPY;
3662
3663 coro_sigelem_vtbl = PL_vtbl_sigelem;
3664 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3665 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3666 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3667 }
3000 3668
3001 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
3002 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3669 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
3003 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3670 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
3004 3671
3005 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3672 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3006 3673
… …
3035 coroapi.prepare_nop = prepare_nop; 3702 coroapi.prepare_nop = prepare_nop;
3036 coroapi.prepare_schedule = prepare_schedule; 3703 coroapi.prepare_schedule = prepare_schedule;
3037 coroapi.prepare_cede = prepare_cede; 3704 coroapi.prepare_cede = prepare_cede;
3038 coroapi.prepare_cede_notself = prepare_cede_notself; 3705 coroapi.prepare_cede_notself = prepare_cede_notself;
3039 3706
3040 { 3707 time_init (aTHX);
3041 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3042
3043 if (!svp) croak ("Time::HiRes is required");
3044 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3045
3046 nvtime = INT2PTR (double (*)(), SvIV (*svp));
3047
3048 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3049 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
3050 }
3051 3708
3052 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); 3709 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3710#if CORO_JIT
3711 PUTBACK;
3712 jit_init (aTHX);
3713 SPAGAIN;
3714#endif
3053} 3715}
3054 3716
3055SV * 3717SV *
3056new (SV *klass, ...) 3718new (SV *klass, ...)
3057 ALIAS: 3719 ALIAS:
… …
3064void 3726void
3065transfer (...) 3727transfer (...)
3066 PROTOTYPE: $$ 3728 PROTOTYPE: $$
3067 CODE: 3729 CODE:
3068 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3730 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3069
3070bool
3071_destroy (SV *coro_sv)
3072 CODE:
3073 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3074 OUTPUT:
3075 RETVAL
3076
3077void
3078_exit (int code)
3079 PROTOTYPE: $
3080 CODE:
3081 _exit (code);
3082 3731
3083SV * 3732SV *
3084clone (Coro::State coro) 3733clone (Coro::State coro)
3085 CODE: 3734 CODE:
3086{ 3735{
… …
3141void 3790void
3142list () 3791list ()
3143 PROTOTYPE: 3792 PROTOTYPE:
3144 PPCODE: 3793 PPCODE:
3145{ 3794{
3146 struct coro *coro; 3795 struct coro *coro;
3147 for (coro = coro_first; coro; coro = coro->next) 3796 for (coro = coro_first; coro; coro = coro->next)
3148 if (coro->hv) 3797 if (coro->hv)
3149 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3798 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
3150} 3799}
3151 3800
… …
3156 CODE: 3805 CODE:
3157{ 3806{
3158 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3807 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3159 { 3808 {
3160 struct coro *current = SvSTATE_current; 3809 struct coro *current = SvSTATE_current;
3810 struct CoroSLF slf_save;
3161 3811
3162 if (current != coro) 3812 if (current != coro)
3163 { 3813 {
3164 PUTBACK; 3814 PUTBACK;
3165 save_perl (aTHX_ current); 3815 save_perl (aTHX_ current);
3166 load_perl (aTHX_ coro); 3816 load_perl (aTHX_ coro);
3817 /* the coro is most likely in an active SLF call.
3818 * while not strictly required (the code we execute is
3819 * not allowed to call any SLF functions), it's cleaner
3820 * to reinitialise the slf_frame and restore it later.
3821 * This might one day allow us to actually do SLF calls
3822 * from code executed here.
3823 */
3824 slf_save = slf_frame;
3825 slf_frame.prepare = 0;
3167 SPAGAIN; 3826 SPAGAIN;
3168 } 3827 }
3169 3828
3170 PUSHSTACK; 3829 PUSHSTACK;
3171 3830
… …
3181 SPAGAIN; 3840 SPAGAIN;
3182 3841
3183 if (current != coro) 3842 if (current != coro)
3184 { 3843 {
3185 PUTBACK; 3844 PUTBACK;
3845 slf_frame = slf_save;
3186 save_perl (aTHX_ coro); 3846 save_perl (aTHX_ coro);
3187 load_perl (aTHX_ current); 3847 load_perl (aTHX_ current);
3188 SPAGAIN; 3848 SPAGAIN;
3189 } 3849 }
3190 } 3850 }
… …
3195 PROTOTYPE: $ 3855 PROTOTYPE: $
3196 ALIAS: 3856 ALIAS:
3197 is_ready = CF_READY 3857 is_ready = CF_READY
3198 is_running = CF_RUNNING 3858 is_running = CF_RUNNING
3199 is_new = CF_NEW 3859 is_new = CF_NEW
3200 is_destroyed = CF_DESTROYED 3860 is_destroyed = CF_ZOMBIE
3861 is_zombie = CF_ZOMBIE
3201 is_suspended = CF_SUSPENDED 3862 is_suspended = CF_SUSPENDED
3202 CODE: 3863 CODE:
3203 RETVAL = boolSV (coro->flags & ix); 3864 RETVAL = boolSV (coro->flags & ix);
3204 OUTPUT: 3865 OUTPUT:
3205 RETVAL 3866 RETVAL
3206 3867
3207void 3868void
3208throw (Coro::State self, SV *throw = &PL_sv_undef) 3869throw (SV *self, SV *exception = &PL_sv_undef)
3209 PROTOTYPE: $;$ 3870 PROTOTYPE: $;$
3210 CODE: 3871 CODE:
3211{ 3872{
3873 struct coro *coro = SvSTATE (self);
3212 struct coro *current = SvSTATE_current; 3874 struct coro *current = SvSTATE_current;
3213 SV **throwp = self == current ? &CORO_THROW : &self->except; 3875 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3214 SvREFCNT_dec (*throwp); 3876 SvREFCNT_dec (*exceptionp);
3215 SvGETMAGIC (throw); 3877 SvGETMAGIC (exception);
3216 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3878 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3879
3880 api_ready (aTHX_ self);
3217} 3881}
3218 3882
3219void 3883void
3220api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3884api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3221 PROTOTYPE: $;$ 3885 PROTOTYPE: $;$
… …
3276 3940
3277void 3941void
3278cancel (Coro::State self) 3942cancel (Coro::State self)
3279 CODE: 3943 CODE:
3280 coro_state_destroy (aTHX_ self); 3944 coro_state_destroy (aTHX_ self);
3281 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3282
3283 3945
3284SV * 3946SV *
3285enable_times (int enabled = enable_times) 3947enable_times (int enabled = enable_times)
3286 CODE: 3948 CODE:
3287{ 3949{
… …
3300 3962
3301void 3963void
3302times (Coro::State self) 3964times (Coro::State self)
3303 PPCODE: 3965 PPCODE:
3304{ 3966{
3305 struct coro *current = SvSTATE (coro_current); 3967 struct coro *current = SvSTATE (coro_current);
3306 3968
3307 if (expect_false (current == self)) 3969 if (ecb_expect_false (current == self))
3308 { 3970 {
3309 coro_times_update (); 3971 coro_times_update ();
3310 coro_times_add (SvSTATE (coro_current)); 3972 coro_times_add (SvSTATE (coro_current));
3311 } 3973 }
3312 3974
3313 EXTEND (SP, 2); 3975 EXTEND (SP, 2);
3314 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); 3976 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3315 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); 3977 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3316 3978
3317 if (expect_false (current == self)) 3979 if (ecb_expect_false (current == self))
3318 coro_times_sub (SvSTATE (coro_current)); 3980 coro_times_sub (SvSTATE (coro_current));
3319} 3981}
3320 3982
3983void
3984swap_sv (Coro::State coro, SV *sva, SV *svb)
3985 CODE:
3986{
3987 struct coro *current = SvSTATE_current;
3988 AV *swap_sv;
3989 int i;
3990
3991 sva = SvRV (sva);
3992 svb = SvRV (svb);
3993
3994 if (current == coro)
3995 SWAP_SVS_LEAVE (current);
3996
3997 if (!coro->swap_sv)
3998 coro->swap_sv = newAV ();
3999
4000 swap_sv = coro->swap_sv;
4001
4002 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4003 {
4004 SV *a = AvARRAY (swap_sv)[i ];
4005 SV *b = AvARRAY (swap_sv)[i + 1];
4006
4007 if (a == sva && b == svb)
4008 {
4009 SvREFCNT_dec_NN (a);
4010 SvREFCNT_dec_NN (b);
4011
4012 for (; i <= AvFILLp (swap_sv) - 2; i++)
4013 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4014
4015 AvFILLp (swap_sv) -= 2;
4016
4017 goto removed;
4018 }
4019 }
4020
4021 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4022 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4023
4024 removed:
4025
4026 if (current == coro)
4027 SWAP_SVS_ENTER (current);
4028}
4029
4030
3321MODULE = Coro::State PACKAGE = Coro 4031MODULE = Coro::State PACKAGE = Coro
3322 4032
3323BOOT: 4033BOOT:
3324{ 4034{
4035 if (SVt_LAST > 32)
4036 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
4037
3325 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4038 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3326 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4039 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3327 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); 4040 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3328 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3329 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4041 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3330 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4042 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3331 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4043 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3332 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4044 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3333 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4045 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3334 4046
3335 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4047 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3336 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4048 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3337 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4049 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3338 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ 4050 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3339 4051
3340 coro_stash = gv_stashpv ("Coro", TRUE); 4052 coro_stash = gv_stashpv ("Coro", TRUE);
3341 4053
3342 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); 4054 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3343 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); 4055 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3344 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); 4056 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
… …
3356 coroapi.ready = api_ready; 4068 coroapi.ready = api_ready;
3357 coroapi.is_ready = api_is_ready; 4069 coroapi.is_ready = api_is_ready;
3358 coroapi.nready = coro_nready; 4070 coroapi.nready = coro_nready;
3359 coroapi.current = coro_current; 4071 coroapi.current = coro_current;
3360 4072
4073 coroapi.enterleave_hook = api_enterleave_hook;
4074 coroapi.enterleave_unhook = api_enterleave_unhook;
4075 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4076
3361 /*GCoroAPI = &coroapi;*/ 4077 /*GCoroAPI = &coroapi;*/
3362 sv_setiv (sv, (IV)&coroapi); 4078 sv_setiv (sv, (IV)&coroapi);
3363 SvREADONLY_on (sv); 4079 SvREADONLY_on (sv);
3364 } 4080 }
3365} 4081}
… …
3372 api_ready (aTHX_ RETVAL); 4088 api_ready (aTHX_ RETVAL);
3373 OUTPUT: 4089 OUTPUT:
3374 RETVAL 4090 RETVAL
3375 4091
3376void 4092void
4093_destroy (Coro::State coro)
4094 CODE:
4095 /* used by the manager thread */
4096 coro_state_destroy (aTHX_ coro);
4097
4098void
4099on_destroy (Coro::State coro, SV *cb)
4100 CODE:
4101 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4102
4103void
4104join (...)
4105 CODE:
4106 CORO_EXECUTE_SLF_XS (slf_init_join);
4107
4108void
3377terminate (...) 4109terminate (...)
3378 CODE: 4110 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4111 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4112
4113void
4114cancel (...)
4115 CODE:
4116 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4117
4118int
4119safe_cancel (Coro::State self, ...)
4120 C_ARGS: aTHX_ self, &ST (1), items - 1
3380 4121
3381void 4122void
3382schedule (...) 4123schedule (...)
3383 CODE: 4124 CODE:
3384 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4125 CORO_EXECUTE_SLF_XS (slf_init_schedule);
… …
3405 4146
3406void 4147void
3407_set_current (SV *current) 4148_set_current (SV *current)
3408 PROTOTYPE: $ 4149 PROTOTYPE: $
3409 CODE: 4150 CODE:
3410 SvREFCNT_dec (SvRV (coro_current)); 4151 SvREFCNT_dec_NN (SvRV (coro_current));
3411 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4152 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3412 4153
3413void 4154void
3414_set_readyhook (SV *hook) 4155_set_readyhook (SV *hook)
3415 PROTOTYPE: $ 4156 PROTOTYPE: $
… …
3499 4240
3500 if ((SV *)hv == &PL_sv_undef) 4241 if ((SV *)hv == &PL_sv_undef)
3501 { 4242 {
3502 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); 4243 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3503 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); 4244 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
3504 SvREFCNT_dec (sv); 4245 SvREFCNT_dec_NN (sv);
3505 } 4246 }
3506 4247
3507 { 4248 {
3508 struct coro *coro = SvSTATE_hv (hv); 4249 struct coro *coro = SvSTATE_hv (hv);
3509 4250
… …
3516 api_ready (aTHX_ (SV *)hv); 4257 api_ready (aTHX_ (SV *)hv);
3517 4258
3518 if (GIMME_V != G_VOID) 4259 if (GIMME_V != G_VOID)
3519 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4260 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3520 else 4261 else
3521 SvREFCNT_dec (hv); 4262 SvREFCNT_dec_NN (hv);
3522} 4263}
3523 4264
3524SV * 4265SV *
3525rouse_cb () 4266rouse_cb ()
3526 PROTOTYPE: 4267 PROTOTYPE:
… …
3541 on_leave = 1 4282 on_leave = 1
3542 PROTOTYPE: & 4283 PROTOTYPE: &
3543 CODE: 4284 CODE:
3544{ 4285{
3545 struct coro *coro = SvSTATE_current; 4286 struct coro *coro = SvSTATE_current;
3546 AV **avp = ix ? &coro->on_leave : &coro->on_enter; 4287 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3547 4288
3548 block = s_get_cv_croak (block); 4289 block = s_get_cv_croak (block);
3549 4290
3550 if (!*avp) 4291 if (!*avp)
3551 *avp = newAV (); 4292 *avp = newAV ();
… …
3571 4312
3572SV * 4313SV *
3573new (SV *klass, SV *count = 0) 4314new (SV *klass, SV *count = 0)
3574 CODE: 4315 CODE:
3575{ 4316{
3576 int semcnt = 1; 4317 int semcnt = 1;
3577 4318
3578 if (count) 4319 if (count)
3579 { 4320 {
3580 SvGETMAGIC (count); 4321 SvGETMAGIC (count);
3581 4322
… …
3605 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4346 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3606 OUTPUT: 4347 OUTPUT:
3607 RETVAL 4348 RETVAL
3608 4349
3609void 4350void
3610up (SV *self, int adjust = 1) 4351up (SV *self)
3611 ALIAS:
3612 adjust = 1
3613 CODE: 4352 CODE:
4353 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4354
4355void
4356adjust (SV *self, int adjust)
4357 CODE:
3614 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4358 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3615 4359
3616void 4360void
3617down (...) 4361down (...)
3618 CODE: 4362 CODE:
3619 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4363 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3641 XSRETURN_NO; 4385 XSRETURN_NO;
3642} 4386}
3643 4387
3644void 4388void
3645waiters (SV *self) 4389waiters (SV *self)
3646 PPCODE: 4390 PPCODE:
3647{ 4391{
3648 AV *av = (AV *)SvRV (self); 4392 AV *av = (AV *)SvRV (self);
3649 int wcount = AvFILLp (av) + 1 - 1; 4393 int wcount = AvFILLp (av) + 1 - 1;
3650 4394
3651 if (GIMME_V == G_SCALAR) 4395 if (GIMME_V == G_SCALAR)
… …
3660} 4404}
3661 4405
3662MODULE = Coro::State PACKAGE = Coro::SemaphoreSet 4406MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3663 4407
3664void 4408void
3665_may_delete (SV *sem, int count, int extra_refs) 4409_may_delete (SV *sem, int count, unsigned int extra_refs)
3666 PPCODE: 4410 PPCODE:
3667{ 4411{
3668 AV *av = (AV *)SvRV (sem); 4412 AV *av = (AV *)SvRV (sem);
3669 4413
3670 if (SvREFCNT ((SV *)av) == 1 + extra_refs 4414 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3671 && AvFILLp (av) == 0 /* no waiters, just count */ 4415 && AvFILLp (av) == 0 /* no waiters, just count */
3672 && SvIV (AvARRAY (av)[0]) == count) 4416 && SvIV (AvARRAY (av)[0]) == count)
3673 XSRETURN_YES; 4417 XSRETURN_YES;
… …
3694 4438
3695void 4439void
3696broadcast (SV *self) 4440broadcast (SV *self)
3697 CODE: 4441 CODE:
3698{ 4442{
3699 AV *av = (AV *)SvRV (self); 4443 AV *av = (AV *)SvRV (self);
3700 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4444 coro_signal_wake (aTHX_ av, AvFILLp (av));
3701} 4445}
3702 4446
3703void 4447void
3704send (SV *self) 4448send (SV *self)
… …
3712 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4456 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3713} 4457}
3714 4458
3715IV 4459IV
3716awaited (SV *self) 4460awaited (SV *self)
3717 CODE: 4461 CODE:
3718 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4462 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3719 OUTPUT: 4463 OUTPUT:
3720 RETVAL 4464 RETVAL
3721 4465
3722 4466
… …
3727 4471
3728void 4472void
3729_schedule (...) 4473_schedule (...)
3730 CODE: 4474 CODE:
3731{ 4475{
3732 static int incede; 4476 static int incede;
3733 4477
3734 api_cede_notself (aTHX); 4478 api_cede_notself (aTHX);
3735 4479
3736 ++incede; 4480 ++incede;
3737 while (coro_nready >= incede && api_cede (aTHX)) 4481 while (coro_nready >= incede && api_cede (aTHX))
… …
3781 { 4525 {
3782 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; 4526 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3783 coro_old_pp_sselect = 0; 4527 coro_old_pp_sselect = 0;
3784 } 4528 }
3785 4529
4530MODULE = Coro::State PACKAGE = Coro::Util
3786 4531
4532void
4533_exit (int code)
4534 CODE:
4535 _exit (code);
4536
4537NV
4538time ()
4539 CODE:
4540 RETVAL = nvtime (aTHX);
4541 OUTPUT:
4542 RETVAL
4543
4544NV
4545gettimeofday ()
4546 PPCODE:
4547{
4548 UV tv [2];
4549 u2time (aTHX_ tv);
4550 EXTEND (SP, 2);
4551 PUSHs (sv_2mortal (newSVuv (tv [0])));
4552 PUSHs (sv_2mortal (newSVuv (tv [1])));
4553}
4554

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