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Comparing Coro/Coro/State.xs (file contents):
Revision 1.299 by root, Wed Nov 19 00:06:55 2008 UTC vs.
Revision 1.418 by root, Mon Feb 20 00:03:07 2012 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#if HAVE_MMAP
27# include <unistd.h> 39# include <unistd.h>
28# include <sys/mman.h> 40# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 42# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 70#endif
108 71
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
111#endif 74#endif
… …
127#else 90#else
128# define dSTACKLEVEL volatile void *stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 92# define STACKLEVEL ((void *)&stacklevel)
130#endif 93#endif
131 94
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 96
149#include "CoroAPI.h" 97#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 98#define GCoroAPI (&coroapi) /* very sneaky */
151 99
152#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
153# if CORO_PTHREAD 101# if CORO_PTHREAD
154static void *coro_thx; 102static void *coro_thx;
155# endif 103# endif
156#endif 104#endif
157 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
158static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
159 121
160/* we hijack an hopefully unused CV flag for our purposes */ 122/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 123#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
163 126
164static U32 cctx_gen; 127static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 131static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
172static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 141static SV *rv_diehook;
175static SV *rv_warnhook; 142static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
177 144
178/* async_pool helper stuff */ 145/* async_pool helper stuff */
179static SV *sv_pool_rss; 146static SV *sv_pool_rss;
180static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
182 152
183/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
184static SV *sv_activity; 154static SV *sv_activity;
185 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
186static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
188 164
189enum { 165enum
166{
190 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
204 void *sptr; 181 void *sptr;
205 size_t ssize; 182 size_t ssize;
206 183
207 /* cpu state */ 184 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
186#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 187 JMPENV *idle_te; /* same as idle_sp, but for top_env */
188#endif
210 JMPENV *top_env; 189 JMPENV *top_env;
211 coro_context cctx; 190 coro_context cctx;
212 191
213 U32 gen; 192 U32 gen;
214#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
215 int valgrind_id; 194 int valgrind_id;
216#endif 195#endif
217 unsigned char flags; 196 unsigned char flags;
218} coro_cctx; 197} coro_cctx;
219 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
220enum { 205enum
206{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 218#define VARx(name,expr,type) type name;
235# include "state.h" 219# include "state.h"
236#undef VAR 220#undef VARx
237} perl_slots; 221} perl_slots;
238 222
223/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 225
241/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
242struct coro { 227struct coro
228{
243 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
245 234
246 /* state data */ 235 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 237 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
250 239
240 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 244
257 /* statistics */ 245 /* statistics */
258 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
259 247
260 /* coro process data */ 248 /* coro process data */
261 int prio; 249 int prio;
262 SV *except; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
263 254
264 /* async_pool */ 255 /* async_pool */
265 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
266 269
267 /* linked list */ 270 /* linked list */
268 struct coro *next, *prev; 271 struct coro *next, *prev;
269}; 272};
270 273
271typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
273 276
274/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
275/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
276/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
277static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
278 281
279/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
280 283
281#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
282#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
283#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
284#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
285#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
286#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
287 290
288/* for Coro.pm */ 291/* for Coro.pm */
289static SV *coro_current; 292static SV *coro_current;
290static SV *coro_readyhook; 293static SV *coro_readyhook;
291static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
295static CV *cv_coro_run;
292static struct coro *coro_first; 296static struct coro *coro_first;
293#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
294 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have HAVE_MMAP though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if __x86_64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
295/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
296 395
297static SV * 396static SV * ecb_noinline
298coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
299{ 398{
300#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
301 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
302 get_sv (name, create); 401 get_sv (name, create);
303#endif 402#endif
304 return get_sv (name, create); 403 return get_sv (name, create);
305} 404}
306 405
307static AV * 406static AV * ecb_noinline
308coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
309{ 408{
310#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
311 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
312 get_av (name, create); 411 get_av (name, create);
313#endif 412#endif
314 return get_av (name, create); 413 return get_av (name, create);
315} 414}
316 415
317static HV * 416static HV * ecb_noinline
318coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
319{ 418{
320#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
321 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
322 get_hv (name, create); 421 get_hv (name, create);
323#endif 422#endif
324 return get_hv (name, create); 423 return get_hv (name, create);
325} 424}
326 425
327static AV * 426ecb_inline void
427coro_times_update (void)
428{
429#ifdef coro_clock_gettime
430 struct timespec ts;
431
432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro))
513 coro = SvRV (coro);
514
515 mg = SvSTATEhv_p (aTHX_ coro);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline AV *
328coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
329{ 533{
330 AV *padlist = CvPADLIST (cv); 534 AV *padlist = CvPADLIST (cv);
331 AV *newpadlist, *newpad; 535 AV *newpadlist, *newpad;
332 536
333 newpadlist = newAV (); 537 newpadlist = newAV ();
… …
338 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 542 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
339#endif 543#endif
340 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 544 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
341 --AvFILLp (padlist); 545 --AvFILLp (padlist);
342 546
343 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 547 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
344 av_store (newpadlist, 1, (SV *)newpad); 548 av_store (newpadlist, 1, (SV *)newpad);
345 549
346 return newpadlist; 550 return newpadlist;
347} 551}
348 552
349static void 553ecb_inline void
350free_padlist (pTHX_ AV *padlist) 554free_padlist (pTHX_ AV *padlist)
351{ 555{
352 /* may be during global destruction */ 556 /* may be during global destruction */
353 if (SvREFCNT (padlist)) 557 if (!IN_DESTRUCT)
354 { 558 {
355 I32 i = AvFILLp (padlist); 559 I32 i = AvFILLp (padlist);
356 while (i >= 0) 560
561 while (i > 0) /* special-case index 0 */
357 { 562 {
358 SV **svp = av_fetch (padlist, i--, FALSE); 563 /* we try to be extra-careful here */
359 if (svp) 564 AV *av = (AV *)AvARRAY (padlist)[i--];
360 { 565 I32 j = AvFILLp (av);
361 SV *sv; 566
362 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 567 while (j >= 0)
568 SvREFCNT_dec (AvARRAY (av)[j--]);
569
570 AvFILLp (av) = -1;
363 SvREFCNT_dec (sv); 571 SvREFCNT_dec (av);
364
365 SvREFCNT_dec (*svp);
366 }
367 } 572 }
368 573
574 SvREFCNT_dec (AvARRAY (padlist)[0]);
575
576 AvFILLp (padlist) = -1;
369 SvREFCNT_dec ((SV*)padlist); 577 SvREFCNT_dec ((SV*)padlist);
370 } 578 }
371} 579}
372 580
373static int 581static int
374coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 582coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
375{ 583{
376 AV *padlist; 584 AV *padlist;
377 AV *av = (AV *)mg->mg_obj; 585 AV *av = (AV *)mg->mg_obj;
586
587 /* perl manages to free our internal AV and _then_ call us */
588 if (IN_DESTRUCT)
589 return 0;
378 590
379 /* casting is fun. */ 591 /* casting is fun. */
380 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 592 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
381 free_padlist (aTHX_ padlist); 593 free_padlist (aTHX_ padlist);
382 594
383 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 595 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
384 596
385 return 0; 597 return 0;
386} 598}
387
388#define CORO_MAGIC_type_cv 26
389#define CORO_MAGIC_type_state PERL_MAGIC_ext
390 599
391static MGVTBL coro_cv_vtbl = { 600static MGVTBL coro_cv_vtbl = {
392 0, 0, 0, 0, 601 0, 0, 0, 0,
393 coro_cv_free 602 coro_cv_free
394}; 603};
395 604
396#define CORO_MAGIC_NN(sv, type) \
397 (expect_true (SvMAGIC (sv)->mg_type == type) \
398 ? SvMAGIC (sv) \
399 : mg_find (sv, type))
400
401#define CORO_MAGIC(sv, type) \
402 (expect_true (SvMAGIC (sv)) \
403 ? CORO_MAGIC_NN (sv, type) \
404 : 0)
405
406#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
407#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
408
409INLINE struct coro *
410SvSTATE_ (pTHX_ SV *coro)
411{
412 HV *stash;
413 MAGIC *mg;
414
415 if (SvROK (coro))
416 coro = SvRV (coro);
417
418 if (expect_false (SvTYPE (coro) != SVt_PVHV))
419 croak ("Coro::State object required");
420
421 stash = SvSTASH (coro);
422 if (expect_false (stash != coro_stash && stash != coro_state_stash))
423 {
424 /* very slow, but rare, check */
425 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
426 croak ("Coro::State object required");
427 }
428
429 mg = CORO_MAGIC_state (coro);
430 return (struct coro *)mg->mg_ptr;
431}
432
433#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
434
435/* faster than SvSTATE, but expects a coroutine hv */
436#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
437#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
438
439/* the next two functions merely cache the padlists */ 605/* the next two functions merely cache the padlists */
440static void 606ecb_inline void
441get_padlist (pTHX_ CV *cv) 607get_padlist (pTHX_ CV *cv)
442{ 608{
443 MAGIC *mg = CORO_MAGIC_cv (cv); 609 MAGIC *mg = CORO_MAGIC_cv (cv);
444 AV *av; 610 AV *av;
445 611
446 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 612 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
447 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 613 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
448 else 614 else
449 { 615 {
450#if CORO_PREFER_PERL_FUNCTIONS 616#if CORO_PREFER_PERL_FUNCTIONS
451 /* this is probably cleaner? but also slower! */ 617 /* this is probably cleaner? but also slower! */
452 /* in practise, it seems to be less stable */ 618 /* in practise, it seems to be less stable */
453 CV *cp = Perl_cv_clone (cv); 619 CV *cp = Perl_cv_clone (aTHX_ cv);
454 CvPADLIST (cv) = CvPADLIST (cp); 620 CvPADLIST (cv) = CvPADLIST (cp);
455 CvPADLIST (cp) = 0; 621 CvPADLIST (cp) = 0;
456 SvREFCNT_dec (cp); 622 SvREFCNT_dec (cp);
457#else 623#else
458 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 624 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
459#endif 625#endif
460 } 626 }
461} 627}
462 628
463static void 629ecb_inline void
464put_padlist (pTHX_ CV *cv) 630put_padlist (pTHX_ CV *cv)
465{ 631{
466 MAGIC *mg = CORO_MAGIC_cv (cv); 632 MAGIC *mg = CORO_MAGIC_cv (cv);
467 AV *av; 633 AV *av;
468 634
469 if (expect_false (!mg)) 635 if (ecb_expect_false (!mg))
470 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 636 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
471 637
472 av = (AV *)mg->mg_obj; 638 av = (AV *)mg->mg_obj;
473 639
474 if (expect_false (AvFILLp (av) >= AvMAX (av))) 640 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
475 av_extend (av, AvMAX (av) + 1); 641 av_extend (av, AvFILLp (av) + 1);
476 642
477 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 643 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
478} 644}
479 645
480/** load & save, init *******************************************************/ 646/** load & save, init *******************************************************/
647
648ecb_inline void
649swap_sv (SV *a, SV *b)
650{
651 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
652 SV tmp;
653
654 /* swap sv_any */
655 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
656
657 /* swap sv_flags */
658 SvFLAGS (&tmp) = SvFLAGS (a);
659 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
660 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
661
662#if PERL_VERSION_ATLEAST (5,10,0)
663 /* perl 5.10 and later complicates this _quite_ a bit, but it also
664 * is much faster, so no quarrels here. alternatively, we could
665 * sv_upgrade to avoid this.
666 */
667 {
668 /* swap sv_u */
669 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
670
671 /* if SvANY points to the head, we need to adjust the pointers,
672 * as the pointer for a still points to b, and maybe vice versa.
673 */
674 #define svany_in_head(type) \
675 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
676
677 if (svany_in_head (SvTYPE (a)))
678 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
679
680 if (svany_in_head (SvTYPE (b)))
681 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
682 }
683#endif
684}
685
686/* swap sv heads, at least logically */
687static void
688swap_svs (pTHX_ Coro__State c)
689{
690 int i;
691
692 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
693 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
694}
695
696#define SWAP_SVS(coro) \
697 if (ecb_expect_false ((coro)->swap_sv)) \
698 swap_svs (aTHX_ (coro))
699
700static void
701on_enterleave_call (pTHX_ SV *cb);
481 702
482static void 703static void
483load_perl (pTHX_ Coro__State c) 704load_perl (pTHX_ Coro__State c)
484{ 705{
485 perl_slots *slot = c->slot; 706 perl_slots *slot = c->slot;
486 c->slot = 0; 707 c->slot = 0;
487 708
488 PL_mainstack = c->mainstack; 709 PL_mainstack = c->mainstack;
489 710
490 GvSV (PL_defgv) = slot->defsv; 711#if CORO_JIT
491 GvAV (PL_defgv) = slot->defav; 712 load_perl_slots (slot);
492 GvSV (PL_errgv) = slot->errsv; 713#else
493 GvSV (irsgv) = slot->irsgv;
494
495 #define VAR(name,type) PL_ ## name = slot->name; 714 #define VARx(name,expr,type) expr = slot->name;
496 # include "state.h" 715 # include "state.h"
497 #undef VAR 716 #undef VARx
717#endif
498 718
499 { 719 {
500 dSP; 720 dSP;
501 721
502 CV *cv; 722 CV *cv;
503 723
504 /* now do the ugly restore mess */ 724 /* now do the ugly restore mess */
505 while (expect_true (cv = (CV *)POPs)) 725 while (ecb_expect_true (cv = (CV *)POPs))
506 { 726 {
507 put_padlist (aTHX_ cv); /* mark this padlist as available */ 727 put_padlist (aTHX_ cv); /* mark this padlist as available */
508 CvDEPTH (cv) = PTR2IV (POPs); 728 CvDEPTH (cv) = PTR2IV (POPs);
509 CvPADLIST (cv) = (AV *)POPs; 729 CvPADLIST (cv) = (AV *)POPs;
510 } 730 }
… …
512 PUTBACK; 732 PUTBACK;
513 } 733 }
514 734
515 slf_frame = c->slf_frame; 735 slf_frame = c->slf_frame;
516 CORO_THROW = c->except; 736 CORO_THROW = c->except;
737
738 if (ecb_expect_false (enable_times))
739 {
740 if (ecb_expect_false (!times_valid))
741 coro_times_update ();
742
743 coro_times_sub (c);
744 }
745
746 if (ecb_expect_false (c->on_enter))
747 {
748 int i;
749
750 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
751 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
752 }
753
754 SWAP_SVS (c);
517} 755}
518 756
519static void 757static void
520save_perl (pTHX_ Coro__State c) 758save_perl (pTHX_ Coro__State c)
521{ 759{
760 SWAP_SVS (c);
761
762 if (ecb_expect_false (c->on_leave))
763 {
764 int i;
765
766 for (i = AvFILLp (c->on_leave); i >= 0; --i)
767 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
768 }
769
770 times_valid = 0;
771
772 if (ecb_expect_false (enable_times))
773 {
774 coro_times_update (); times_valid = 1;
775 coro_times_add (c);
776 }
777
522 c->except = CORO_THROW; 778 c->except = CORO_THROW;
523 c->slf_frame = slf_frame; 779 c->slf_frame = slf_frame;
524 780
525 { 781 {
526 dSP; 782 dSP;
… …
535 791
536 XPUSHs (Nullsv); 792 XPUSHs (Nullsv);
537 /* this loop was inspired by pp_caller */ 793 /* this loop was inspired by pp_caller */
538 for (;;) 794 for (;;)
539 { 795 {
540 while (expect_true (cxix >= 0)) 796 while (ecb_expect_true (cxix >= 0))
541 { 797 {
542 PERL_CONTEXT *cx = &ccstk[cxix--]; 798 PERL_CONTEXT *cx = &ccstk[cxix--];
543 799
544 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 800 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
545 { 801 {
546 CV *cv = cx->blk_sub.cv; 802 CV *cv = cx->blk_sub.cv;
547 803
548 if (expect_true (CvDEPTH (cv))) 804 if (ecb_expect_true (CvDEPTH (cv)))
549 { 805 {
550 EXTEND (SP, 3); 806 EXTEND (SP, 3);
551 PUSHs ((SV *)CvPADLIST (cv)); 807 PUSHs ((SV *)CvPADLIST (cv));
552 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 808 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
553 PUSHs ((SV *)cv); 809 PUSHs ((SV *)cv);
… …
556 get_padlist (aTHX_ cv); 812 get_padlist (aTHX_ cv);
557 } 813 }
558 } 814 }
559 } 815 }
560 816
561 if (expect_true (top_si->si_type == PERLSI_MAIN)) 817 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
562 break; 818 break;
563 819
564 top_si = top_si->si_prev; 820 top_si = top_si->si_prev;
565 ccstk = top_si->si_cxstack; 821 ccstk = top_si->si_cxstack;
566 cxix = top_si->si_cxix; 822 cxix = top_si->si_cxix;
… …
568 824
569 PUTBACK; 825 PUTBACK;
570 } 826 }
571 827
572 /* allocate some space on the context stack for our purposes */ 828 /* allocate some space on the context stack for our purposes */
573 /* we manually unroll here, as usually 2 slots is enough */ 829 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
574 if (SLOT_COUNT >= 1) CXINC;
575 if (SLOT_COUNT >= 2) CXINC;
576 if (SLOT_COUNT >= 3) CXINC;
577 { 830 {
578 int i; 831 unsigned int i;
832
579 for (i = 3; i < SLOT_COUNT; ++i) 833 for (i = 0; i < SLOT_COUNT; ++i)
580 CXINC; 834 CXINC;
581 } 835
582 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 836 cxstack_ix -= SLOT_COUNT; /* undo allocation */
837 }
583 838
584 c->mainstack = PL_mainstack; 839 c->mainstack = PL_mainstack;
585 840
586 { 841 {
587 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 842 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
588 843
589 slot->defav = GvAV (PL_defgv); 844#if CORO_JIT
590 slot->defsv = DEFSV; 845 save_perl_slots (slot);
591 slot->errsv = ERRSV; 846#else
592 slot->irsgv = GvSV (irsgv);
593
594 #define VAR(name,type) slot->name = PL_ ## name; 847 #define VARx(name,expr,type) slot->name = expr;
595 # include "state.h" 848 # include "state.h"
596 #undef VAR 849 #undef VARx
850#endif
597 } 851 }
598} 852}
599 853
600/* 854/*
601 * allocate various perl stacks. This is almost an exact copy 855 * allocate various perl stacks. This is almost an exact copy
602 * of perl.c:init_stacks, except that it uses less memory 856 * of perl.c:init_stacks, except that it uses less memory
603 * on the (sometimes correct) assumption that coroutines do 857 * on the (sometimes correct) assumption that coroutines do
604 * not usually need a lot of stackspace. 858 * not usually need a lot of stackspace.
605 */ 859 */
606#if CORO_PREFER_PERL_FUNCTIONS 860#if CORO_PREFER_PERL_FUNCTIONS
607# define coro_init_stacks init_stacks 861# define coro_init_stacks(thx) init_stacks ()
608#else 862#else
609static void 863static void
610coro_init_stacks (pTHX) 864coro_init_stacks (pTHX)
611{ 865{
612 PL_curstackinfo = new_stackinfo(32, 8); 866 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
613 PL_curstackinfo->si_type = PERLSI_MAIN; 867 PL_curstackinfo->si_type = PERLSI_MAIN;
614 PL_curstack = PL_curstackinfo->si_stack; 868 PL_curstack = PL_curstackinfo->si_stack;
615 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 869 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
616 870
617 PL_stack_base = AvARRAY(PL_curstack); 871 PL_stack_base = AvARRAY(PL_curstack);
… …
632#endif 886#endif
633 887
634 New(54,PL_scopestack,8,I32); 888 New(54,PL_scopestack,8,I32);
635 PL_scopestack_ix = 0; 889 PL_scopestack_ix = 0;
636 PL_scopestack_max = 8; 890 PL_scopestack_max = 8;
891#if HAS_SCOPESTACK_NAME
892 New(54,PL_scopestack_name,8,const char*);
893#endif
637 894
638 New(54,PL_savestack,24,ANY); 895 New(54,PL_savestack,24,ANY);
639 PL_savestack_ix = 0; 896 PL_savestack_ix = 0;
640 PL_savestack_max = 24; 897 PL_savestack_max = 24;
641 898
… …
669 } 926 }
670 927
671 Safefree (PL_tmps_stack); 928 Safefree (PL_tmps_stack);
672 Safefree (PL_markstack); 929 Safefree (PL_markstack);
673 Safefree (PL_scopestack); 930 Safefree (PL_scopestack);
931#if HAS_SCOPESTACK_NAME
932 Safefree (PL_scopestack_name);
933#endif
674 Safefree (PL_savestack); 934 Safefree (PL_savestack);
675#if !PERL_VERSION_ATLEAST (5,10,0) 935#if !PERL_VERSION_ATLEAST (5,10,0)
676 Safefree (PL_retstack); 936 Safefree (PL_retstack);
677#endif 937#endif
678} 938}
679 939
940#define CORO_RSS \
941 rss += sizeof (SYM (curstackinfo)); \
942 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
943 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
944 rss += SYM (tmps_max) * sizeof (SV *); \
945 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
946 rss += SYM (scopestack_max) * sizeof (I32); \
947 rss += SYM (savestack_max) * sizeof (ANY);
948
680static size_t 949static size_t
681coro_rss (pTHX_ struct coro *coro) 950coro_rss (pTHX_ struct coro *coro)
682{ 951{
683 size_t rss = sizeof (*coro); 952 size_t rss = sizeof (*coro);
684 953
685 if (coro->mainstack) 954 if (coro->mainstack)
686 { 955 {
687 perl_slots tmp_slot;
688 perl_slots *slot;
689
690 if (coro->flags & CF_RUNNING) 956 if (coro->flags & CF_RUNNING)
691 { 957 {
692 slot = &tmp_slot; 958 #define SYM(sym) PL_ ## sym
693 959 CORO_RSS;
694 #define VAR(name,type) slot->name = PL_ ## name;
695 # include "state.h"
696 #undef VAR 960 #undef SYM
697 } 961 }
698 else 962 else
699 slot = coro->slot;
700
701 if (slot)
702 { 963 {
703 rss += sizeof (slot->curstackinfo); 964 #define SYM(sym) coro->slot->sym
704 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 965 CORO_RSS;
705 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 966 #undef SYM
706 rss += slot->tmps_max * sizeof (SV *);
707 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
708 rss += slot->scopestack_max * sizeof (I32);
709 rss += slot->savestack_max * sizeof (ANY);
710
711#if !PERL_VERSION_ATLEAST (5,10,0)
712 rss += slot->retstack_max * sizeof (OP *);
713#endif
714 } 967 }
715 } 968 }
716 969
717 return rss; 970 return rss;
718} 971}
… …
731#endif 984#endif
732 985
733/* 986/*
734 * This overrides the default magic get method of %SIG elements. 987 * This overrides the default magic get method of %SIG elements.
735 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 988 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
736 * and instead of tryign to save and restore the hash elements, we just provide 989 * and instead of trying to save and restore the hash elements (extremely slow),
737 * readback here. 990 * we just provide our own readback here.
738 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
739 * not expecting this to actually change the hook. This is a potential problem
740 * when a schedule happens then, but we ignore this.
741 */ 991 */
742static int 992static int ecb_cold
743coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 993coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
744{ 994{
745 const char *s = MgPV_nolen_const (mg); 995 const char *s = MgPV_nolen_const (mg);
746 996
747 if (*s == '_') 997 if (*s == '_')
… …
751 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1001 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
752 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1002 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
753 1003
754 if (svp) 1004 if (svp)
755 { 1005 {
756 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1006 SV *ssv;
1007
1008 if (!*svp)
1009 ssv = &PL_sv_undef;
1010 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1011 ssv = sv_2mortal (newRV_inc (*svp));
1012 else
1013 ssv = *svp;
1014
1015 sv_setsv (sv, ssv);
757 return 0; 1016 return 0;
758 } 1017 }
759 } 1018 }
760 1019
761 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
762} 1021}
763 1022
764static int 1023static int ecb_cold
765coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
766{ 1025{
767 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
768 1027
769 if (*s == '_') 1028 if (*s == '_')
… …
783 } 1042 }
784 1043
785 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
786} 1045}
787 1046
788static int 1047static int ecb_cold
789coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1048coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
790{ 1049{
791 const char *s = MgPV_nolen_const (mg); 1050 const char *s = MgPV_nolen_const (mg);
792 1051
793 if (*s == '_') 1052 if (*s == '_')
… …
798 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1057 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
799 1058
800 if (svp) 1059 if (svp)
801 { 1060 {
802 SV *old = *svp; 1061 SV *old = *svp;
803 *svp = newSVsv (sv); 1062 *svp = SvOK (sv) ? newSVsv (sv) : 0;
804 SvREFCNT_dec (old); 1063 SvREFCNT_dec (old);
805 return 0; 1064 return 0;
806 } 1065 }
807 } 1066 }
808 1067
… …
820slf_check_nop (pTHX_ struct CoroSLF *frame) 1079slf_check_nop (pTHX_ struct CoroSLF *frame)
821{ 1080{
822 return 0; 1081 return 0;
823} 1082}
824 1083
825static UNOP coro_setup_op; 1084static int
1085slf_check_repeat (pTHX_ struct CoroSLF *frame)
1086{
1087 return 1;
1088}
826 1089
827static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1090static UNOP init_perl_op;
1091
1092ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1093init_perl (pTHX_ struct coro *coro)
829{ 1094{
830 /* 1095 /*
831 * emulate part of the perl startup here. 1096 * emulate part of the perl startup here.
832 */ 1097 */
833 coro_init_stacks (aTHX); 1098 coro_init_stacks (aTHX);
834 1099
835 PL_runops = RUNOPS_DEFAULT; 1100 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1101 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1102 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1103 PL_comppad = 0;
1104 PL_comppad_name = 0;
1105 PL_comppad_name_fill = 0;
1106 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1107 PL_curpm = 0;
840 PL_curpad = 0; 1108 PL_curpad = 0;
841 PL_localizing = 0; 1109 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1110 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1111#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1112 PL_parser = 0;
846#endif 1113#endif
1114 PL_hints = 0;
847 1115
848 /* recreate the die/warn hooks */ 1116 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1117 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1118 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1119
852 GvSV (PL_defgv) = newSV (0); 1120 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1121 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1122 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1123 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1124 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1125 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1126 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1127
859 { 1128 {
860 dSP; 1129 dSP;
861 UNOP myop; 1130 UNOP myop;
862 1131
863 Zero (&myop, 1, UNOP); 1132 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1133 myop.op_next = Nullop;
1134 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1135 myop.op_flags = OPf_WANT_VOID;
866 1136
867 PUSHMARK (SP); 1137 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1138 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1139 PUTBACK;
870 PL_op = (OP *)&myop; 1140 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1141 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1142 }
874 1143
875 /* this newly created coroutine might be run on an existing cctx which most 1144 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1145 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 */ 1146 */
878 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1147 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
879 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1148 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1149 slf_frame.destroy = 0;
880 1150
881 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1151 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
882 coro_setup_op.op_next = PL_op; 1152 init_perl_op.op_next = PL_op;
883 coro_setup_op.op_type = OP_CUSTOM; 1153 init_perl_op.op_type = OP_ENTERSUB;
884 coro_setup_op.op_ppaddr = pp_slf; 1154 init_perl_op.op_ppaddr = pp_slf;
885 /* no flags required, as an init function won't be called */ 1155 /* no flags etc. required, as an init function won't be called */
886 1156
887 PL_op = (OP *)&coro_setup_op; 1157 PL_op = (OP *)&init_perl_op;
888 1158
889 /* copy throw, in case it was set before coro_setup */ 1159 /* copy throw, in case it was set before init_perl */
890 CORO_THROW = coro->except; 1160 CORO_THROW = coro->except;
891}
892 1161
1162 SWAP_SVS (coro);
1163
1164 if (ecb_expect_false (enable_times))
1165 {
1166 coro_times_update ();
1167 coro_times_sub (coro);
1168 }
1169}
1170
893static void 1171static void
894coro_destruct (pTHX_ struct coro *coro) 1172coro_unwind_stacks (pTHX)
895{ 1173{
896 if (!IN_DESTRUCT) 1174 if (!IN_DESTRUCT)
897 { 1175 {
898 /* restore all saved variables and stuff */ 1176 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1177 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1185 POPSTACK_TO (PL_mainstack);
908 1186
909 /* unwind main stack */ 1187 /* unwind main stack */
910 dounwind (-1); 1188 dounwind (-1);
911 } 1189 }
1190}
912 1191
913 SvREFCNT_dec (GvSV (PL_defgv)); 1192static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1193destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1194{
916 SvREFCNT_dec (PL_defoutgv); 1195 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1196
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 1197 {
1198 SV *old_current = SvRV (coro_current);
1199 struct coro *current = SvSTATE (old_current);
1200
1201 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1202
1203 save_perl (aTHX_ current);
1204
1205 /* this will cause transfer_check to croak on block*/
1206 SvRV_set (coro_current, (SV *)coro->hv);
1207
1208 load_perl (aTHX_ coro);
1209
1210 coro_unwind_stacks (aTHX);
1211
1212 /* restore swapped sv's */
1213 SWAP_SVS (coro);
1214
1215 coro_destruct_stacks (aTHX);
1216
1217 /* now save some sv's to be free'd later */
1218 svf [0] = GvSV (PL_defgv);
1219 svf [1] = (SV *)GvAV (PL_defgv);
1220 svf [2] = GvSV (PL_errgv);
1221 svf [3] = (SV *)PL_defoutgv;
1222 svf [4] = PL_rs;
1223 svf [5] = GvSV (irsgv);
1224 svf [6] = (SV *)GvHV (PL_hintgv);
1225 svf [7] = PL_diehook;
1226 svf [8] = PL_warnhook;
1227 assert (9 == sizeof (svf) / sizeof (*svf));
1228
1229 SvRV_set (coro_current, old_current);
1230
1231 load_perl (aTHX_ current);
1232 }
1233
1234 {
1235 unsigned int i;
1236
1237 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1238 SvREFCNT_dec (svf [i]);
1239
923 SvREFCNT_dec (coro->saved_deffh); 1240 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (CORO_THROW); 1241 SvREFCNT_dec (coro->rouse_cb);
925 1242 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1243 SvREFCNT_dec (coro->invoke_av);
1244 }
927} 1245}
928 1246
929INLINE void 1247ecb_inline void
930free_coro_mortal (pTHX) 1248free_coro_mortal (pTHX)
931{ 1249{
932 if (expect_true (coro_mortal)) 1250 if (ecb_expect_true (coro_mortal))
933 { 1251 {
934 SvREFCNT_dec (coro_mortal); 1252 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1253 coro_mortal = 0;
936 } 1254 }
937} 1255}
938 1256
939static int 1257static int
940runops_trace (pTHX) 1258runops_trace (pTHX)
941{ 1259{
942 COP *oldcop = 0; 1260 COP *oldcop = 0;
943 int oldcxix = -2; 1261 int oldcxix = -2;
944 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1262
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1263 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1264 {
949 PERL_ASYNC_CHECK (); 1265 PERL_ASYNC_CHECK ();
950 1266
951 if (cctx->flags & CC_TRACE_ALL) 1267 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1268 {
953 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1269 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
954 { 1270 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1272 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1273 AV *av = newAV (); /* return values */
958 SV **cb; 1274 SV **cb;
… …
995 1311
996 if (PL_curcop != &PL_compiling) 1312 if (PL_curcop != &PL_compiling)
997 { 1313 {
998 SV **cb; 1314 SV **cb;
999 1315
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1316 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1317 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1318 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1319
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1320 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1321 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1322 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1323 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1324 SV *fullname = sv_2mortal (newSV (0));
1010 1325
1011 if (isGV (gv)) 1326 if (isGV (gv))
… …
1016 SAVETMPS; 1331 SAVETMPS;
1017 EXTEND (SP, 3); 1332 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1333 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1334 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1335 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1336 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1337 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1338 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1339 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1340 SPAGAIN;
1026 FREETMPS; 1341 FREETMPS;
… …
1029 } 1344 }
1030 1345
1031 oldcxix = cxstack_ix; 1346 oldcxix = cxstack_ix;
1032 } 1347 }
1033 1348
1034 if (cctx->flags & CC_TRACE_LINE) 1349 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1350 {
1036 dSP; 1351 dSP;
1037 1352
1038 PL_runops = RUNOPS_DEFAULT; 1353 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1354 ENTER;
… …
1058 1373
1059 TAINT_NOT; 1374 TAINT_NOT;
1060 return 0; 1375 return 0;
1061} 1376}
1062 1377
1063static struct coro_cctx *cctx_ssl_cctx;
1064static struct CoroSLF cctx_ssl_frame; 1378static struct CoroSLF cctx_ssl_frame;
1065 1379
1066static void 1380static void
1067slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1381slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1068{ 1382{
1069 ta->prev = (struct coro *)cctx_ssl_cctx;
1070 ta->next = 0; 1383 ta->prev = 0;
1071} 1384}
1072 1385
1073static int 1386static int
1074slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1387slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1075{ 1388{
… …
1077 1390
1078 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1391 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1079} 1392}
1080 1393
1081/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1394/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1082static void NOINLINE 1395static void ecb_noinline
1083cctx_prepare (pTHX_ coro_cctx *cctx) 1396cctx_prepare (pTHX)
1084{ 1397{
1085 PL_top_env = &PL_start_env; 1398 PL_top_env = &PL_start_env;
1086 1399
1087 if (cctx->flags & CC_TRACE) 1400 if (cctx_current->flags & CC_TRACE)
1088 PL_runops = runops_trace; 1401 PL_runops = runops_trace;
1089 1402
1090 /* we already must be executing an SLF op, there is no other valid way 1403 /* we already must be executing an SLF op, there is no other valid way
1091 * that can lead to creation of a new cctx */ 1404 * that can lead to creation of a new cctx */
1092 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1405 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1093 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1406 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1094 1407
1095 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1408 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1096 cctx_ssl_cctx = cctx;
1097 cctx_ssl_frame = slf_frame; 1409 cctx_ssl_frame = slf_frame;
1098 1410
1099 slf_frame.prepare = slf_prepare_set_stacklevel; 1411 slf_frame.prepare = slf_prepare_set_stacklevel;
1100 slf_frame.check = slf_check_set_stacklevel; 1412 slf_frame.check = slf_check_set_stacklevel;
1101} 1413}
1102 1414
1103/* the tail of transfer: execute stuff we can only do after a transfer */ 1415/* the tail of transfer: execute stuff we can only do after a transfer */
1104INLINE void 1416ecb_inline void
1105transfer_tail (pTHX) 1417transfer_tail (pTHX)
1106{ 1418{
1107 free_coro_mortal (aTHX); 1419 free_coro_mortal (aTHX);
1420}
1421
1422/* try to exit the same way perl's main function would do */
1423/* we do not bother resetting the environment or other things *7
1424/* that are not, uhm, essential */
1425/* this obviously also doesn't work when perl is embedded */
1426static void ecb_noinline ecb_cold
1427perlish_exit (void)
1428{
1429 int exitstatus = perl_destruct (PL_curinterp);
1430 perl_free (PL_curinterp);
1431 exit (exitstatus);
1108} 1432}
1109 1433
1110/* 1434/*
1111 * this is a _very_ stripped down perl interpreter ;) 1435 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1436 */
… …
1124 /* normally we would need to skip the entersub here */ 1448 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1449 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1450 /* PL_nop = PL_nop->op_next */
1127 1451
1128 /* inject a fake subroutine call to cctx_init */ 1452 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1453 cctx_prepare (aTHX);
1130 1454
1131 /* cctx_run is the alternative tail of transfer() */ 1455 /* cctx_run is the alternative tail of transfer() */
1132 transfer_tail (aTHX); 1456 transfer_tail (aTHX);
1133 1457
1134 /* somebody or something will hit me for both perl_run and PL_restartop */ 1458 /* somebody or something will hit me for both perl_run and PL_restartop */
1135 PL_restartop = PL_op; 1459 PL_restartop = PL_op;
1136 perl_run (PL_curinterp); 1460 perl_run (PL_curinterp);
1461 /*
1462 * Unfortunately, there is no way to get at the return values of the
1463 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1464 * runtime errors here, as this is just a random interpreter, not a thread.
1465 */
1137 1466
1138 /* 1467 /*
1139 * If perl-run returns we assume exit() was being called or the coro 1468 * If perl-run returns we assume exit() was being called or the coro
1140 * fell off the end, which seems to be the only valid (non-bug) 1469 * fell off the end, which seems to be the only valid (non-bug)
1141 * reason for perl_run to return. We try to exit by jumping to the 1470 * reason for perl_run to return. We try to mimic whatever perl is normally
1142 * bootstrap-time "top" top_env, as we cannot restore the "main" 1471 * doing in that case. YMMV.
1143 * coroutine as Coro has no such concept
1144 */ 1472 */
1145 PL_top_env = main_top_env; 1473 perlish_exit ();
1146 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1147 } 1474 }
1148} 1475}
1149 1476
1150static coro_cctx * 1477static coro_cctx *
1151cctx_new () 1478cctx_new (void)
1152{ 1479{
1153 coro_cctx *cctx; 1480 coro_cctx *cctx;
1154 1481
1155 ++cctx_count; 1482 ++cctx_count;
1156 New (0, cctx, 1, coro_cctx); 1483 New (0, cctx, 1, coro_cctx);
… …
1162 return cctx; 1489 return cctx;
1163} 1490}
1164 1491
1165/* create a new cctx only suitable as source */ 1492/* create a new cctx only suitable as source */
1166static coro_cctx * 1493static coro_cctx *
1167cctx_new_empty () 1494cctx_new_empty (void)
1168{ 1495{
1169 coro_cctx *cctx = cctx_new (); 1496 coro_cctx *cctx = cctx_new ();
1170 1497
1171 cctx->sptr = 0; 1498 cctx->sptr = 0;
1172 coro_create (&cctx->cctx, 0, 0, 0, 0); 1499 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1174 return cctx; 1501 return cctx;
1175} 1502}
1176 1503
1177/* create a new cctx suitable as destination/running a perl interpreter */ 1504/* create a new cctx suitable as destination/running a perl interpreter */
1178static coro_cctx * 1505static coro_cctx *
1179cctx_new_run () 1506cctx_new_run (void)
1180{ 1507{
1181 coro_cctx *cctx = cctx_new (); 1508 coro_cctx *cctx = cctx_new ();
1182 void *stack_start; 1509 void *stack_start;
1183 size_t stack_size; 1510 size_t stack_size;
1184 1511
1185#if HAVE_MMAP 1512#if HAVE_MMAP
1186 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1513 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1187 /* mmap supposedly does allocate-on-write for us */ 1514 /* mmap supposedly does allocate-on-write for us */
1188 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1515 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1189 1516
1190 if (cctx->sptr != (void *)-1) 1517 if (cctx->sptr != (void *)-1)
1191 { 1518 {
1192 #if CORO_STACKGUARD 1519 #if CORO_STACKGUARD
1193 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1520 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1225cctx_destroy (coro_cctx *cctx) 1552cctx_destroy (coro_cctx *cctx)
1226{ 1553{
1227 if (!cctx) 1554 if (!cctx)
1228 return; 1555 return;
1229 1556
1557 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1558
1230 --cctx_count; 1559 --cctx_count;
1231 coro_destroy (&cctx->cctx); 1560 coro_destroy (&cctx->cctx);
1232 1561
1233 /* coro_transfer creates new, empty cctx's */ 1562 /* coro_transfer creates new, empty cctx's */
1234 if (cctx->sptr) 1563 if (cctx->sptr)
… …
1252#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1581#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1253 1582
1254static coro_cctx * 1583static coro_cctx *
1255cctx_get (pTHX) 1584cctx_get (pTHX)
1256{ 1585{
1257 while (expect_true (cctx_first)) 1586 while (ecb_expect_true (cctx_first))
1258 { 1587 {
1259 coro_cctx *cctx = cctx_first; 1588 coro_cctx *cctx = cctx_first;
1260 cctx_first = cctx->next; 1589 cctx_first = cctx->next;
1261 --cctx_idle; 1590 --cctx_idle;
1262 1591
1263 if (expect_true (!CCTX_EXPIRED (cctx))) 1592 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1264 return cctx; 1593 return cctx;
1265 1594
1266 cctx_destroy (cctx); 1595 cctx_destroy (cctx);
1267 } 1596 }
1268 1597
… …
1273cctx_put (coro_cctx *cctx) 1602cctx_put (coro_cctx *cctx)
1274{ 1603{
1275 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1604 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1276 1605
1277 /* free another cctx if overlimit */ 1606 /* free another cctx if overlimit */
1278 if (expect_false (cctx_idle >= cctx_max_idle)) 1607 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1279 { 1608 {
1280 coro_cctx *first = cctx_first; 1609 coro_cctx *first = cctx_first;
1281 cctx_first = first->next; 1610 cctx_first = first->next;
1282 --cctx_idle; 1611 --cctx_idle;
1283 1612
… …
1294static void 1623static void
1295transfer_check (pTHX_ struct coro *prev, struct coro *next) 1624transfer_check (pTHX_ struct coro *prev, struct coro *next)
1296{ 1625{
1297 /* TODO: throwing up here is considered harmful */ 1626 /* TODO: throwing up here is considered harmful */
1298 1627
1299 if (expect_true (prev != next)) 1628 if (ecb_expect_true (prev != next))
1300 { 1629 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1630 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1631 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1632
1304 if (expect_false (next->flags & CF_RUNNING)) 1633 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1306
1307 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1634 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1635
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1636#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1637 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1638 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1639#endif
1314 } 1640 }
1315} 1641}
1316 1642
1317/* always use the TRANSFER macro */ 1643/* always use the TRANSFER macro */
1318static void NOINLINE /* noinline so we have a fixed stackframe */ 1644static void ecb_noinline /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1645transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1646{
1321 dSTACKLEVEL; 1647 dSTACKLEVEL;
1322 1648
1323 /* sometimes transfer is only called to set idle_sp */ 1649 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1650 if (ecb_expect_false (!prev))
1325 { 1651 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1652 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1653 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1654 }
1329 else if (expect_true (prev != next)) 1655 else if (ecb_expect_true (prev != next))
1330 { 1656 {
1331 coro_cctx *prev__cctx; 1657 coro_cctx *cctx_prev;
1332 1658
1333 if (expect_false (prev->flags & CF_NEW)) 1659 if (ecb_expect_false (prev->flags & CF_NEW))
1334 { 1660 {
1335 /* create a new empty/source context */ 1661 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1662 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1663 prev->flags |= CF_RUNNING;
1339 } 1664 }
1340 1665
1341 prev->flags &= ~CF_RUNNING; 1666 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1667 next->flags |= CF_RUNNING;
1343 1668
1344 /* first get rid of the old state */ 1669 /* first get rid of the old state */
1345 save_perl (aTHX_ prev); 1670 save_perl (aTHX_ prev);
1346 1671
1347 if (expect_false (next->flags & CF_NEW)) 1672 if (ecb_expect_false (next->flags & CF_NEW))
1348 { 1673 {
1349 /* need to start coroutine */ 1674 /* need to start coroutine */
1350 next->flags &= ~CF_NEW; 1675 next->flags &= ~CF_NEW;
1351 /* setup coroutine call */ 1676 /* setup coroutine call */
1352 coro_setup (aTHX_ next); 1677 init_perl (aTHX_ next);
1353 } 1678 }
1354 else 1679 else
1355 load_perl (aTHX_ next); 1680 load_perl (aTHX_ next);
1356 1681
1357 prev__cctx = prev->cctx;
1358
1359 /* possibly untie and reuse the cctx */ 1682 /* possibly untie and reuse the cctx */
1360 if (expect_true ( 1683 if (ecb_expect_true (
1361 prev__cctx->idle_sp == STACKLEVEL 1684 cctx_current->idle_sp == STACKLEVEL
1362 && !(prev__cctx->flags & CC_TRACE) 1685 && !(cctx_current->flags & CC_TRACE)
1363 && !force_cctx 1686 && !force_cctx
1364 )) 1687 ))
1365 { 1688 {
1366 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1689 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1367 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1690 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1368 1691
1369 prev->cctx = 0;
1370
1371 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1692 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1372 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1693 /* without this the next cctx_get might destroy the running cctx while still in use */
1373 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1694 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1374 if (!next->cctx) 1695 if (ecb_expect_true (!next->cctx))
1375 next->cctx = cctx_get (aTHX); 1696 next->cctx = cctx_get (aTHX);
1376 1697
1377 cctx_put (prev__cctx); 1698 cctx_put (cctx_current);
1378 } 1699 }
1700 else
1701 prev->cctx = cctx_current;
1379 1702
1380 ++next->usecount; 1703 ++next->usecount;
1381 1704
1382 if (expect_true (!next->cctx)) 1705 cctx_prev = cctx_current;
1383 next->cctx = cctx_get (aTHX); 1706 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1384 1707
1385 if (expect_false (prev__cctx != next->cctx)) 1708 next->cctx = 0;
1709
1710 if (ecb_expect_false (cctx_prev != cctx_current))
1386 { 1711 {
1387 prev__cctx->top_env = PL_top_env; 1712 cctx_prev->top_env = PL_top_env;
1388 PL_top_env = next->cctx->top_env; 1713 PL_top_env = cctx_current->top_env;
1389 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1714 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1390 } 1715 }
1391 1716
1392 transfer_tail (aTHX); 1717 transfer_tail (aTHX);
1393 } 1718 }
1394} 1719}
… …
1396#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1721#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1397#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1722#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1398 1723
1399/** high level stuff ********************************************************/ 1724/** high level stuff ********************************************************/
1400 1725
1726/* this function is actually Coro, not Coro::State, but we call it from here */
1727/* because it is convenient - but it hasn't been declared yet for that reason */
1401static int 1728static void
1729coro_call_on_destroy (pTHX_ struct coro *coro);
1730
1731static void
1402coro_state_destroy (pTHX_ struct coro *coro) 1732coro_state_destroy (pTHX_ struct coro *coro)
1403{ 1733{
1404 if (coro->flags & CF_DESTROYED) 1734 if (coro->flags & CF_ZOMBIE)
1405 return 0; 1735 return;
1406 1736
1407 if (coro->on_destroy)
1408 coro->on_destroy (aTHX_ coro); 1737 slf_destroy (aTHX_ coro);
1409 1738
1410 coro->flags |= CF_DESTROYED; 1739 coro->flags |= CF_ZOMBIE;
1411 1740
1412 if (coro->flags & CF_READY) 1741 if (coro->flags & CF_READY)
1413 { 1742 {
1414 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1743 /* reduce nready, as destroying a ready coro effectively unreadies it */
1415 /* alternative: look through all ready queues and remove the coro */ 1744 /* alternative: look through all ready queues and remove the coro */
1416 --coro_nready; 1745 --coro_nready;
1417 } 1746 }
1418 else 1747 else
1419 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1748 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1420 1749
1421 if (coro->mainstack && coro->mainstack != main_mainstack)
1422 {
1423 struct coro temp;
1424
1425 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1426
1427 save_perl (aTHX_ &temp);
1428 load_perl (aTHX_ coro);
1429
1430 coro_destruct (aTHX_ coro);
1431
1432 load_perl (aTHX_ &temp);
1433
1434 coro->slot = 0;
1435 }
1436
1437 cctx_destroy (coro->cctx);
1438 SvREFCNT_dec (coro->args);
1439
1440 if (coro->next) coro->next->prev = coro->prev; 1750 if (coro->next) coro->next->prev = coro->prev;
1441 if (coro->prev) coro->prev->next = coro->next; 1751 if (coro->prev) coro->prev->next = coro->next;
1442 if (coro == coro_first) coro_first = coro->next; 1752 if (coro == coro_first) coro_first = coro->next;
1443 1753
1444 return 1; 1754 if (coro->mainstack
1755 && coro->mainstack != main_mainstack
1756 && coro->slot
1757 && !PL_dirty)
1758 destroy_perl (aTHX_ coro);
1759
1760 cctx_destroy (coro->cctx);
1761 SvREFCNT_dec (coro->startcv);
1762 SvREFCNT_dec (coro->args);
1763 SvREFCNT_dec (coro->swap_sv);
1764 SvREFCNT_dec (CORO_THROW);
1765
1766 coro_call_on_destroy (aTHX_ coro);
1767
1768 /* more destruction mayhem in coro_state_free */
1445} 1769}
1446 1770
1447static int 1771static int
1448coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1772coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1449{ 1773{
1450 struct coro *coro = (struct coro *)mg->mg_ptr; 1774 struct coro *coro = (struct coro *)mg->mg_ptr;
1451 mg->mg_ptr = 0; 1775 mg->mg_ptr = 0;
1452 1776
1453 coro->hv = 0;
1454
1455 if (--coro->refcnt < 0)
1456 {
1457 coro_state_destroy (aTHX_ coro); 1777 coro_state_destroy (aTHX_ coro);
1778 SvREFCNT_dec (coro->on_destroy);
1779 SvREFCNT_dec (coro->status);
1780
1458 Safefree (coro); 1781 Safefree (coro);
1459 }
1460 1782
1461 return 0; 1783 return 0;
1462} 1784}
1463 1785
1464static int 1786static int ecb_cold
1465coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1787coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1466{ 1788{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1789 /* called when perl clones the current process the slow way (windows process emulation) */
1468 1790 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1469 ++coro->refcnt; 1791 mg->mg_ptr = 0;
1792 mg->mg_virtual = 0;
1470 1793
1471 return 0; 1794 return 0;
1472} 1795}
1473 1796
1474static MGVTBL coro_state_vtbl = { 1797static MGVTBL coro_state_vtbl = {
… …
1499 TRANSFER (ta, 1); 1822 TRANSFER (ta, 1);
1500} 1823}
1501 1824
1502/** Coro ********************************************************************/ 1825/** Coro ********************************************************************/
1503 1826
1504INLINE void 1827ecb_inline void
1505coro_enq (pTHX_ struct coro *coro) 1828coro_enq (pTHX_ struct coro *coro)
1506{ 1829{
1507 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1830 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1508}
1509 1831
1510INLINE SV * 1832 SvREFCNT_inc_NN (coro->hv);
1833
1834 coro->next_ready = 0;
1835 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1836 ready [1] = coro;
1837}
1838
1839ecb_inline struct coro *
1511coro_deq (pTHX) 1840coro_deq (pTHX)
1512{ 1841{
1513 int prio; 1842 int prio;
1514 1843
1515 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1844 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1516 if (AvFILLp (coro_ready [prio]) >= 0) 1845 {
1517 return av_shift (coro_ready [prio]); 1846 struct coro **ready = coro_ready [prio];
1847
1848 if (ready [0])
1849 {
1850 struct coro *coro = ready [0];
1851 ready [0] = coro->next_ready;
1852 return coro;
1853 }
1854 }
1518 1855
1519 return 0; 1856 return 0;
1857}
1858
1859static void
1860invoke_sv_ready_hook_helper (void)
1861{
1862 dTHX;
1863 dSP;
1864
1865 ENTER;
1866 SAVETMPS;
1867
1868 PUSHMARK (SP);
1869 PUTBACK;
1870 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1871
1872 FREETMPS;
1873 LEAVE;
1520} 1874}
1521 1875
1522static int 1876static int
1523api_ready (pTHX_ SV *coro_sv) 1877api_ready (pTHX_ SV *coro_sv)
1524{ 1878{
1525 struct coro *coro;
1526 SV *sv_hook;
1527 void (*xs_hook)(void);
1528
1529 if (SvROK (coro_sv))
1530 coro_sv = SvRV (coro_sv);
1531
1532 coro = SvSTATE (coro_sv); 1879 struct coro *coro = SvSTATE (coro_sv);
1533 1880
1534 if (coro->flags & CF_READY) 1881 if (coro->flags & CF_READY)
1535 return 0; 1882 return 0;
1536 1883
1537 coro->flags |= CF_READY; 1884 coro->flags |= CF_READY;
1538 1885
1539 sv_hook = coro_nready ? 0 : coro_readyhook;
1540 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1541
1542 coro_enq (aTHX_ coro); 1886 coro_enq (aTHX_ coro);
1543 ++coro_nready;
1544 1887
1545 if (sv_hook) 1888 if (!coro_nready++)
1546 { 1889 if (coroapi.readyhook)
1547 dSP; 1890 coroapi.readyhook ();
1548
1549 ENTER;
1550 SAVETMPS;
1551
1552 PUSHMARK (SP);
1553 PUTBACK;
1554 call_sv (sv_hook, G_VOID | G_DISCARD);
1555
1556 FREETMPS;
1557 LEAVE;
1558 }
1559
1560 if (xs_hook)
1561 xs_hook ();
1562 1891
1563 return 1; 1892 return 1;
1564} 1893}
1565 1894
1566static int 1895static int
1567api_is_ready (pTHX_ SV *coro_sv) 1896api_is_ready (pTHX_ SV *coro_sv)
1568{ 1897{
1569 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1898 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1570} 1899}
1571 1900
1572INLINE void 1901/* expects to own a reference to next->hv */
1902ecb_inline void
1573prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1903prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1574{ 1904{
1575 SV *prev_sv, *next_sv;
1576
1577 for (;;)
1578 {
1579 next_sv = coro_deq (aTHX);
1580
1581 /* nothing to schedule: call the idle handler */
1582 if (expect_false (!next_sv))
1583 {
1584 dSP;
1585
1586 ENTER;
1587 SAVETMPS;
1588
1589 PUSHMARK (SP);
1590 PUTBACK;
1591 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1592
1593 FREETMPS;
1594 LEAVE;
1595 continue;
1596 }
1597
1598 ta->next = SvSTATE_hv (next_sv);
1599
1600 /* cannot transfer to destroyed coros, skip and look for next */
1601 if (expect_false (ta->next->flags & CF_DESTROYED))
1602 {
1603 SvREFCNT_dec (next_sv);
1604 /* coro_nready has already been taken care of by destroy */
1605 continue;
1606 }
1607
1608 --coro_nready;
1609 break;
1610 }
1611
1612 /* free this only after the transfer */
1613 prev_sv = SvRV (coro_current); 1905 SV *prev_sv = SvRV (coro_current);
1906
1614 ta->prev = SvSTATE_hv (prev_sv); 1907 ta->prev = SvSTATE_hv (prev_sv);
1908 ta->next = next;
1909
1615 TRANSFER_CHECK (*ta); 1910 TRANSFER_CHECK (*ta);
1616 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1911
1617 ta->next->flags &= ~CF_READY;
1618 SvRV_set (coro_current, next_sv); 1912 SvRV_set (coro_current, (SV *)next->hv);
1619 1913
1620 free_coro_mortal (aTHX); 1914 free_coro_mortal (aTHX);
1621 coro_mortal = prev_sv; 1915 coro_mortal = prev_sv;
1622} 1916}
1623 1917
1624INLINE void 1918static void
1919prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1920{
1921 for (;;)
1922 {
1923 struct coro *next = coro_deq (aTHX);
1924
1925 if (ecb_expect_true (next))
1926 {
1927 /* cannot transfer to destroyed coros, skip and look for next */
1928 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1929 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1930 else
1931 {
1932 next->flags &= ~CF_READY;
1933 --coro_nready;
1934
1935 prepare_schedule_to (aTHX_ ta, next);
1936 break;
1937 }
1938 }
1939 else
1940 {
1941 /* nothing to schedule: call the idle handler */
1942 if (SvROK (sv_idle)
1943 && SvOBJECT (SvRV (sv_idle)))
1944 {
1945 if (SvRV (sv_idle) == SvRV (coro_current))
1946 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1947
1948 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1949 api_ready (aTHX_ SvRV (sv_idle));
1950 --coro_nready;
1951 }
1952 else
1953 {
1954 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1955 dSP;
1956
1957 ENTER;
1958 SAVETMPS;
1959
1960 PUSHMARK (SP);
1961 PUTBACK;
1962 call_sv (sv_idle, G_VOID | G_DISCARD);
1963
1964 FREETMPS;
1965 LEAVE;
1966 }
1967 }
1968 }
1969}
1970
1971ecb_inline void
1625prepare_cede (pTHX_ struct coro_transfer_args *ta) 1972prepare_cede (pTHX_ struct coro_transfer_args *ta)
1626{ 1973{
1627 api_ready (aTHX_ coro_current); 1974 api_ready (aTHX_ coro_current);
1628 prepare_schedule (aTHX_ ta); 1975 prepare_schedule (aTHX_ ta);
1629} 1976}
1630 1977
1631INLINE void 1978ecb_inline void
1632prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1979prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1633{ 1980{
1634 SV *prev = SvRV (coro_current); 1981 SV *prev = SvRV (coro_current);
1635 1982
1636 if (coro_nready) 1983 if (coro_nready)
… …
1649 1996
1650 prepare_schedule (aTHX_ &ta); 1997 prepare_schedule (aTHX_ &ta);
1651 TRANSFER (ta, 1); 1998 TRANSFER (ta, 1);
1652} 1999}
1653 2000
2001static void
2002api_schedule_to (pTHX_ SV *coro_sv)
2003{
2004 struct coro_transfer_args ta;
2005 struct coro *next = SvSTATE (coro_sv);
2006
2007 SvREFCNT_inc_NN (coro_sv);
2008 prepare_schedule_to (aTHX_ &ta, next);
2009}
2010
1654static int 2011static int
1655api_cede (pTHX) 2012api_cede (pTHX)
1656{ 2013{
1657 struct coro_transfer_args ta; 2014 struct coro_transfer_args ta;
1658 2015
1659 prepare_cede (aTHX_ &ta); 2016 prepare_cede (aTHX_ &ta);
1660 2017
1661 if (expect_true (ta.prev != ta.next)) 2018 if (ecb_expect_true (ta.prev != ta.next))
1662 { 2019 {
1663 TRANSFER (ta, 1); 2020 TRANSFER (ta, 1);
1664 return 1; 2021 return 1;
1665 } 2022 }
1666 else 2023 else
… …
1685static void 2042static void
1686api_trace (pTHX_ SV *coro_sv, int flags) 2043api_trace (pTHX_ SV *coro_sv, int flags)
1687{ 2044{
1688 struct coro *coro = SvSTATE (coro_sv); 2045 struct coro *coro = SvSTATE (coro_sv);
1689 2046
2047 if (coro->flags & CF_RUNNING)
2048 croak ("cannot enable tracing on a running coroutine, caught");
2049
1690 if (flags & CC_TRACE) 2050 if (flags & CC_TRACE)
1691 { 2051 {
1692 if (!coro->cctx) 2052 if (!coro->cctx)
1693 coro->cctx = cctx_new_run (); 2053 coro->cctx = cctx_new_run ();
1694 else if (!(coro->cctx->flags & CC_TRACE)) 2054 else if (!(coro->cctx->flags & CC_TRACE))
1695 croak ("cannot enable tracing on coroutine with custom stack,"); 2055 croak ("cannot enable tracing on coroutine with custom stack, caught");
1696 2056
1697 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2057 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1698 } 2058 }
1699 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2059 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1700 { 2060 {
… …
1703 if (coro->flags & CF_RUNNING) 2063 if (coro->flags & CF_RUNNING)
1704 PL_runops = RUNOPS_DEFAULT; 2064 PL_runops = RUNOPS_DEFAULT;
1705 else 2065 else
1706 coro->slot->runops = RUNOPS_DEFAULT; 2066 coro->slot->runops = RUNOPS_DEFAULT;
1707 } 2067 }
2068}
2069
2070static void
2071coro_push_av (pTHX_ AV *av, I32 gimme_v)
2072{
2073 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2074 {
2075 dSP;
2076
2077 if (gimme_v == G_SCALAR)
2078 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2079 else
2080 {
2081 int i;
2082 EXTEND (SP, AvFILLp (av) + 1);
2083
2084 for (i = 0; i <= AvFILLp (av); ++i)
2085 PUSHs (AvARRAY (av)[i]);
2086 }
2087
2088 PUTBACK;
2089 }
2090}
2091
2092static void
2093coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2094{
2095 if (!coro->on_destroy)
2096 coro->on_destroy = newAV ();
2097
2098 av_push (coro->on_destroy, cb);
2099}
2100
2101static void
2102slf_destroy_join (pTHX_ struct CoroSLF *frame)
2103{
2104 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2105}
2106
2107static int
2108slf_check_join (pTHX_ struct CoroSLF *frame)
2109{
2110 struct coro *coro = (struct coro *)frame->data;
2111
2112 if (!coro->status)
2113 return 1;
2114
2115 frame->destroy = 0;
2116
2117 coro_push_av (aTHX_ coro->status, GIMME_V);
2118
2119 SvREFCNT_dec ((SV *)coro->hv);
2120
2121 return 0;
2122}
2123
2124static void
2125slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2126{
2127 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2128
2129 if (items > 1)
2130 croak ("join called with too many arguments");
2131
2132 if (coro->status)
2133 frame->prepare = prepare_nop;
2134 else
2135 {
2136 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2137 frame->prepare = prepare_schedule;
2138 }
2139
2140 frame->check = slf_check_join;
2141 frame->destroy = slf_destroy_join;
2142 frame->data = (void *)coro;
2143 SvREFCNT_inc (coro->hv);
2144}
2145
2146static void
2147coro_call_on_destroy (pTHX_ struct coro *coro)
2148{
2149 AV *od = coro->on_destroy;
2150
2151 if (!od)
2152 return;
2153
2154 while (AvFILLp (od) >= 0)
2155 {
2156 SV *cb = sv_2mortal (av_pop (od));
2157
2158 /* coro hv's (and only hv's at the moment) are supported as well */
2159 if (SvSTATEhv_p (aTHX_ cb))
2160 api_ready (aTHX_ cb);
2161 else
2162 {
2163 dSP; /* don't disturb outer sp */
2164 PUSHMARK (SP);
2165
2166 if (coro->status)
2167 {
2168 PUTBACK;
2169 coro_push_av (aTHX_ coro->status, G_ARRAY);
2170 SPAGAIN;
2171 }
2172
2173 PUTBACK;
2174 call_sv (cb, G_VOID | G_DISCARD);
2175 }
2176 }
2177}
2178
2179static void
2180coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2181{
2182 AV *av;
2183
2184 if (coro->status)
2185 {
2186 av = coro->status;
2187 av_clear (av);
2188 }
2189 else
2190 av = coro->status = newAV ();
2191
2192 /* items are actually not so common, so optimise for this case */
2193 if (items)
2194 {
2195 int i;
2196
2197 av_extend (av, items - 1);
2198
2199 for (i = 0; i < items; ++i)
2200 av_push (av, SvREFCNT_inc_NN (arg [i]));
2201 }
2202}
2203
2204static void
2205slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2206{
2207 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2208 api_ready (aTHX_ sv_manager);
2209
2210 frame->prepare = prepare_schedule;
2211 frame->check = slf_check_repeat;
2212
2213 /* as a minor optimisation, we could unwind all stacks here */
2214 /* but that puts extra pressure on pp_slf, and is not worth much */
2215 /*coro_unwind_stacks (aTHX);*/
2216}
2217
2218static void
2219slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2220{
2221 HV *coro_hv = (HV *)SvRV (coro_current);
2222
2223 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2224 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2225}
2226
2227static void
2228slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2229{
2230 HV *coro_hv;
2231 struct coro *coro;
2232
2233 if (items <= 0)
2234 croak ("Coro::cancel called without coro object,");
2235
2236 coro = SvSTATE (arg [0]);
2237 coro_hv = coro->hv;
2238
2239 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2240
2241 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2242 {
2243 /* coro currently busy cancelling something, so just notify it */
2244 coro->slf_frame.data = (void *)coro;
2245
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 else if (coro_hv == (HV *)SvRV (coro_current))
2250 {
2251 /* cancelling the current coro is allowed, and equals terminate */
2252 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2253 }
2254 else
2255 {
2256 struct coro *self = SvSTATE_current;
2257
2258 /* otherwise we cancel directly, purely for speed reasons
2259 * unfortunately, this requires some magic trickery, as
2260 * somebody else could cancel us, so we have to fight the cancellation.
2261 * this is ugly, and hopefully fully worth the extra speed.
2262 * besides, I can't get the slow-but-safe version working...
2263 */
2264 slf_frame.data = 0;
2265 self->flags |= CF_NOCANCEL;
2266 coro_state_destroy (aTHX_ coro);
2267 self->flags &= ~CF_NOCANCEL;
2268
2269 if (slf_frame.data)
2270 {
2271 /* while we were busy we have been cancelled, so terminate */
2272 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2273 }
2274 else
2275 {
2276 frame->prepare = prepare_nop;
2277 frame->check = slf_check_nop;
2278 }
2279 }
2280}
2281
2282static int
2283slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2284{
2285 frame->prepare = 0;
2286 coro_unwind_stacks (aTHX);
2287
2288 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2289
2290 return 1;
2291}
2292
2293static int
2294safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2295{
2296 if (coro->cctx)
2297 croak ("coro inside C callback, unable to cancel at this time, caught");
2298
2299 if (coro->flags & CF_NEW)
2300 {
2301 coro_set_status (aTHX_ coro, arg, items);
2302 coro_state_destroy (aTHX_ coro);
2303 }
2304 else
2305 {
2306 if (!coro->slf_frame.prepare)
2307 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2308
2309 slf_destroy (aTHX_ coro);
2310
2311 coro_set_status (aTHX_ coro, arg, items);
2312 coro->slf_frame.prepare = prepare_nop;
2313 coro->slf_frame.check = slf_check_safe_cancel;
2314
2315 api_ready (aTHX_ (SV *)coro->hv);
2316 }
2317
2318 return 1;
2319}
2320
2321/*****************************************************************************/
2322/* async pool handler */
2323
2324static int
2325slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2326{
2327 HV *hv = (HV *)SvRV (coro_current);
2328 struct coro *coro = (struct coro *)frame->data;
2329
2330 if (!coro->invoke_cb)
2331 return 1; /* loop till we have invoke */
2332 else
2333 {
2334 hv_store (hv, "desc", sizeof ("desc") - 1,
2335 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2336
2337 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2338
2339 {
2340 dSP;
2341 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2342 PUTBACK;
2343 }
2344
2345 SvREFCNT_dec (GvAV (PL_defgv));
2346 GvAV (PL_defgv) = coro->invoke_av;
2347 coro->invoke_av = 0;
2348
2349 return 0;
2350 }
2351}
2352
2353static void
2354slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2355{
2356 HV *hv = (HV *)SvRV (coro_current);
2357 struct coro *coro = SvSTATE_hv ((SV *)hv);
2358
2359 if (ecb_expect_true (coro->saved_deffh))
2360 {
2361 /* subsequent iteration */
2362 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2363 coro->saved_deffh = 0;
2364
2365 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2366 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2367 {
2368 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2369 return;
2370 }
2371 else
2372 {
2373 av_clear (GvAV (PL_defgv));
2374 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2375
2376 coro->prio = 0;
2377
2378 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2379 api_trace (aTHX_ coro_current, 0);
2380
2381 frame->prepare = prepare_schedule;
2382 av_push (av_async_pool, SvREFCNT_inc (hv));
2383 }
2384 }
2385 else
2386 {
2387 /* first iteration, simply fall through */
2388 frame->prepare = prepare_nop;
2389 }
2390
2391 frame->check = slf_check_pool_handler;
2392 frame->data = (void *)coro;
2393}
2394
2395/*****************************************************************************/
2396/* rouse callback */
2397
2398#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2399
2400static void
2401coro_rouse_callback (pTHX_ CV *cv)
2402{
2403 dXSARGS;
2404 SV *data = (SV *)S_GENSUB_ARG;
2405
2406 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2407 {
2408 /* first call, set args */
2409 SV *coro = SvRV (data);
2410 AV *av = newAV ();
2411
2412 SvRV_set (data, (SV *)av);
2413
2414 /* better take a full copy of the arguments */
2415 while (items--)
2416 av_store (av, items, newSVsv (ST (items)));
2417
2418 api_ready (aTHX_ coro);
2419 SvREFCNT_dec (coro);
2420 }
2421
2422 XSRETURN_EMPTY;
2423}
2424
2425static int
2426slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2427{
2428 SV *data = (SV *)frame->data;
2429
2430 if (CORO_THROW)
2431 return 0;
2432
2433 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2434 return 1;
2435
2436 /* now push all results on the stack */
2437 {
2438 dSP;
2439 AV *av = (AV *)SvRV (data);
2440 int i;
2441
2442 EXTEND (SP, AvFILLp (av) + 1);
2443 for (i = 0; i <= AvFILLp (av); ++i)
2444 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2445
2446 /* we have stolen the elements, so set length to zero and free */
2447 AvFILLp (av) = -1;
2448 av_undef (av);
2449
2450 PUTBACK;
2451 }
2452
2453 return 0;
2454}
2455
2456static void
2457slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2458{
2459 SV *cb;
2460
2461 if (items)
2462 cb = arg [0];
2463 else
2464 {
2465 struct coro *coro = SvSTATE_current;
2466
2467 if (!coro->rouse_cb)
2468 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2469
2470 cb = sv_2mortal (coro->rouse_cb);
2471 coro->rouse_cb = 0;
2472 }
2473
2474 if (!SvROK (cb)
2475 || SvTYPE (SvRV (cb)) != SVt_PVCV
2476 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2477 croak ("Coro::rouse_wait called with illegal callback argument,");
2478
2479 {
2480 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2481 SV *data = (SV *)S_GENSUB_ARG;
2482
2483 frame->data = (void *)data;
2484 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2485 frame->check = slf_check_rouse_wait;
2486 }
2487}
2488
2489static SV *
2490coro_new_rouse_cb (pTHX)
2491{
2492 HV *hv = (HV *)SvRV (coro_current);
2493 struct coro *coro = SvSTATE_hv (hv);
2494 SV *data = newRV_inc ((SV *)hv);
2495 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2496
2497 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2498 SvREFCNT_dec (data); /* magicext increases the refcount */
2499
2500 SvREFCNT_dec (coro->rouse_cb);
2501 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2502
2503 return cb;
1708} 2504}
1709 2505
1710/*****************************************************************************/ 2506/*****************************************************************************/
1711/* schedule-like-function opcode (SLF) */ 2507/* schedule-like-function opcode (SLF) */
1712 2508
… …
1762 frame->prepare = prepare_schedule; 2558 frame->prepare = prepare_schedule;
1763 frame->check = slf_check_nop; 2559 frame->check = slf_check_nop;
1764} 2560}
1765 2561
1766static void 2562static void
2563slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2564{
2565 struct coro *next = (struct coro *)slf_frame.data;
2566
2567 SvREFCNT_inc_NN (next->hv);
2568 prepare_schedule_to (aTHX_ ta, next);
2569}
2570
2571static void
2572slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 if (!items)
2575 croak ("Coro::schedule_to expects a coroutine argument, caught");
2576
2577 frame->data = (void *)SvSTATE (arg [0]);
2578 frame->prepare = slf_prepare_schedule_to;
2579 frame->check = slf_check_nop;
2580}
2581
2582static void
2583slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2584{
2585 api_ready (aTHX_ SvRV (coro_current));
2586
2587 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2588}
2589
2590static void
1767slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2591slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1768{ 2592{
1769 frame->prepare = prepare_cede; 2593 frame->prepare = prepare_cede;
1770 frame->check = slf_check_nop; 2594 frame->check = slf_check_nop;
1771} 2595}
… …
1773static void 2597static void
1774slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2598slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1775{ 2599{
1776 frame->prepare = prepare_cede_notself; 2600 frame->prepare = prepare_cede_notself;
1777 frame->check = slf_check_nop; 2601 frame->check = slf_check_nop;
2602}
2603
2604/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2605static void
2606slf_destroy (pTHX_ struct coro *coro)
2607{
2608 /* this callback is reserved for slf functions needing to do cleanup */
2609 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2610 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2611
2612 /*
2613 * The on_destroy above most likely is from an SLF call.
2614 * Since by definition the SLF call will not finish when we destroy
2615 * the coro, we will have to force-finish it here, otherwise
2616 * cleanup functions cannot call SLF functions.
2617 */
2618 coro->slf_frame.prepare = 0;
1778} 2619}
1779 2620
1780/* 2621/*
1781 * these not obviously related functions are all rolled into one 2622 * these not obviously related functions are all rolled into one
1782 * function to increase chances that they all will call transfer with the same 2623 * function to increase chances that they all will call transfer with the same
… …
1789 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2630 I32 checkmark; /* mark SP to see how many elements check has pushed */
1790 2631
1791 /* set up the slf frame, unless it has already been set-up */ 2632 /* set up the slf frame, unless it has already been set-up */
1792 /* the latter happens when a new coro has been started */ 2633 /* the latter happens when a new coro has been started */
1793 /* or when a new cctx was attached to an existing coroutine */ 2634 /* or when a new cctx was attached to an existing coroutine */
1794 if (expect_true (!slf_frame.prepare)) 2635 if (ecb_expect_true (!slf_frame.prepare))
1795 { 2636 {
1796 /* first iteration */ 2637 /* first iteration */
1797 dSP; 2638 dSP;
1798 SV **arg = PL_stack_base + TOPMARK + 1; 2639 SV **arg = PL_stack_base + TOPMARK + 1;
1799 int items = SP - arg; /* args without function object */ 2640 int items = SP - arg; /* args without function object */
… …
1840 while (slf_frame.check (aTHX_ &slf_frame)); 2681 while (slf_frame.check (aTHX_ &slf_frame));
1841 2682
1842 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2683 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1843 2684
1844 /* exception handling */ 2685 /* exception handling */
1845 if (expect_false (CORO_THROW)) 2686 if (ecb_expect_false (CORO_THROW))
1846 { 2687 {
1847 SV *exception = sv_2mortal (CORO_THROW); 2688 SV *exception = sv_2mortal (CORO_THROW);
1848 2689
1849 CORO_THROW = 0; 2690 CORO_THROW = 0;
1850 sv_setsv (ERRSV, exception); 2691 sv_setsv (ERRSV, exception);
1851 croak (0); 2692 croak (0);
1852 } 2693 }
1853 2694
1854 /* return value handling - mostly like entersub */ 2695 /* return value handling - mostly like entersub */
1855 /* make sure we put something on the stack in scalar context */ 2696 /* make sure we put something on the stack in scalar context */
1856 if (GIMME_V == G_SCALAR) 2697 if (GIMME_V == G_SCALAR
2698 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1857 { 2699 {
1858 dSP; 2700 dSP;
1859 SV **bot = PL_stack_base + checkmark; 2701 SV **bot = PL_stack_base + checkmark;
1860 2702
1861 if (sp == bot) /* too few, push undef */ 2703 if (sp == bot) /* too few, push undef */
1862 bot [1] = &PL_sv_undef; 2704 bot [1] = &PL_sv_undef;
1863 else if (sp != bot + 1) /* too many, take last one */ 2705 else /* too many, take last one */
1864 bot [1] = *sp; 2706 bot [1] = *sp;
1865 2707
1866 SP = bot + 1; 2708 SP = bot + 1;
1867 2709
1868 PUTBACK; 2710 PUTBACK;
… …
1901 if (PL_op->op_flags & OPf_STACKED) 2743 if (PL_op->op_flags & OPf_STACKED)
1902 { 2744 {
1903 if (items > slf_arga) 2745 if (items > slf_arga)
1904 { 2746 {
1905 slf_arga = items; 2747 slf_arga = items;
1906 free (slf_argv); 2748 Safefree (slf_argv);
1907 slf_argv = malloc (slf_arga * sizeof (SV *)); 2749 New (0, slf_argv, slf_arga, SV *);
1908 } 2750 }
1909 2751
1910 slf_argc = items; 2752 slf_argc = items;
1911 2753
1912 for (i = 0; i < items; ++i) 2754 for (i = 0; i < items; ++i)
… …
1914 } 2756 }
1915 else 2757 else
1916 slf_argc = 0; 2758 slf_argc = 0;
1917 2759
1918 PL_op->op_ppaddr = pp_slf; 2760 PL_op->op_ppaddr = pp_slf;
1919 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2761 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1920 2762
1921 PL_op = (OP *)&slf_restore; 2763 PL_op = (OP *)&slf_restore;
2764}
2765
2766/*****************************************************************************/
2767/* dynamic wind */
2768
2769static void
2770on_enterleave_call (pTHX_ SV *cb)
2771{
2772 dSP;
2773
2774 PUSHSTACK;
2775
2776 PUSHMARK (SP);
2777 PUTBACK;
2778 call_sv (cb, G_VOID | G_DISCARD);
2779 SPAGAIN;
2780
2781 POPSTACK;
2782}
2783
2784static SV *
2785coro_avp_pop_and_free (pTHX_ AV **avp)
2786{
2787 AV *av = *avp;
2788 SV *res = av_pop (av);
2789
2790 if (AvFILLp (av) < 0)
2791 {
2792 *avp = 0;
2793 SvREFCNT_dec (av);
2794 }
2795
2796 return res;
2797}
2798
2799static void
2800coro_pop_on_enter (pTHX_ void *coro)
2801{
2802 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2803 SvREFCNT_dec (cb);
2804}
2805
2806static void
2807coro_pop_on_leave (pTHX_ void *coro)
2808{
2809 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2810 on_enterleave_call (aTHX_ sv_2mortal (cb));
1922} 2811}
1923 2812
1924/*****************************************************************************/ 2813/*****************************************************************************/
1925/* PerlIO::cede */ 2814/* PerlIO::cede */
1926 2815
… …
1928{ 2817{
1929 PerlIOBuf base; 2818 PerlIOBuf base;
1930 NV next, every; 2819 NV next, every;
1931} PerlIOCede; 2820} PerlIOCede;
1932 2821
1933static IV 2822static IV ecb_cold
1934PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2823PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1935{ 2824{
1936 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2825 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1937 2826
1938 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2827 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1939 self->next = nvtime () + self->every; 2828 self->next = nvtime () + self->every;
1940 2829
1941 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2830 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1942} 2831}
1943 2832
1944static SV * 2833static SV * ecb_cold
1945PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2834PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1946{ 2835{
1947 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2836 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1948 2837
1949 return newSVnv (self->every); 2838 return newSVnv (self->every);
… …
1995 PerlIOBuf_get_cnt, 2884 PerlIOBuf_get_cnt,
1996 PerlIOBuf_set_ptrcnt, 2885 PerlIOBuf_set_ptrcnt,
1997}; 2886};
1998 2887
1999/*****************************************************************************/ 2888/*****************************************************************************/
2000/* Coro::Semaphore */ 2889/* Coro::Semaphore & Coro::Signal */
2001 2890
2002static SV * 2891static SV *
2003coro_semaphore_new (int count) 2892coro_waitarray_new (pTHX_ int count)
2004{ 2893{
2005 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2894 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2006 AV *av = newAV (); 2895 AV *av = newAV ();
2007 SV **ary; 2896 SV **ary;
2008 2897
2009 /* unfortunately, building manually saves memory */ 2898 /* unfortunately, building manually saves memory */
2010 Newx (ary, 2, SV *); 2899 Newx (ary, 2, SV *);
2011 AvALLOC (av) = ary; 2900 AvALLOC (av) = ary;
2901#if PERL_VERSION_ATLEAST (5,10,0)
2012 AvARRAY (av) = ary; 2902 AvARRAY (av) = ary;
2903#else
2904 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2905 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2906 SvPVX ((SV *)av) = (char *)ary;
2907#endif
2013 AvMAX (av) = 1; 2908 AvMAX (av) = 1;
2014 AvFILLp (av) = 0; 2909 AvFILLp (av) = 0;
2015 ary [0] = newSViv (count); 2910 ary [0] = newSViv (count);
2016 2911
2017 return newRV_noinc ((SV *)av); 2912 return newRV_noinc ((SV *)av);
2018} 2913}
2914
2915/* semaphore */
2019 2916
2020static void 2917static void
2021coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2918coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2022{ 2919{
2023 SV *count_sv = AvARRAY (av)[0]; 2920 SV *count_sv = AvARRAY (av)[0];
… …
2035 AvARRAY (av)[0] = AvARRAY (av)[1]; 2932 AvARRAY (av)[0] = AvARRAY (av)[1];
2036 AvARRAY (av)[1] = count_sv; 2933 AvARRAY (av)[1] = count_sv;
2037 cb = av_shift (av); 2934 cb = av_shift (av);
2038 2935
2039 if (SvOBJECT (cb)) 2936 if (SvOBJECT (cb))
2937 {
2040 api_ready (aTHX_ cb); 2938 api_ready (aTHX_ cb);
2041 else 2939 --count;
2042 croak ("callbacks not yet supported"); 2940 }
2941 else if (SvTYPE (cb) == SVt_PVCV)
2942 {
2943 dSP;
2944 PUSHMARK (SP);
2945 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2946 PUTBACK;
2947 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2948 }
2043 2949
2044 SvREFCNT_dec (cb); 2950 SvREFCNT_dec (cb);
2045
2046 --count;
2047 } 2951 }
2048} 2952}
2049 2953
2050static void 2954static void
2051coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2955coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2052{ 2956{
2053 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2957 /* call $sem->adjust (0) to possibly wake up some other waiters */
2054 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2958 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2055} 2959}
2056 2960
2057static int 2961static int
2058slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2962slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2059{ 2963{
2060 AV *av = (AV *)frame->data; 2964 AV *av = (AV *)frame->data;
2061 SV *count_sv = AvARRAY (av)[0]; 2965 SV *count_sv = AvARRAY (av)[0];
2966 SV *coro_hv = SvRV (coro_current);
2062 2967
2063 /* if we are about to throw, don't actually acquire the lock, just throw */ 2968 /* if we are about to throw, don't actually acquire the lock, just throw */
2064 if (CORO_THROW) 2969 if (CORO_THROW)
2065 return 0; 2970 return 0;
2066 else if (SvIVX (count_sv) > 0) 2971 else if (SvIVX (count_sv) > 0)
2067 { 2972 {
2068 SvSTATE_current->on_destroy = 0; 2973 frame->destroy = 0;
2069 2974
2070 if (acquire) 2975 if (acquire)
2071 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2976 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2072 else 2977 else
2073 coro_semaphore_adjust (aTHX_ av, 0); 2978 coro_semaphore_adjust (aTHX_ av, 0);
… …
2078 { 2983 {
2079 int i; 2984 int i;
2080 /* if we were woken up but can't down, we look through the whole */ 2985 /* if we were woken up but can't down, we look through the whole */
2081 /* waiters list and only add us if we aren't in there already */ 2986 /* waiters list and only add us if we aren't in there already */
2082 /* this avoids some degenerate memory usage cases */ 2987 /* this avoids some degenerate memory usage cases */
2083 2988 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2084 for (i = 1; i <= AvFILLp (av); ++i)
2085 if (AvARRAY (av)[i] == SvRV (coro_current)) 2989 if (AvARRAY (av)[i] == coro_hv)
2086 return 1; 2990 return 1;
2087 2991
2088 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2992 av_push (av, SvREFCNT_inc (coro_hv));
2089 return 1; 2993 return 1;
2090 } 2994 }
2091} 2995}
2092 2996
2093static int 2997static int
… …
2116 { 3020 {
2117 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3021 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2118 3022
2119 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3023 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2120 frame->prepare = prepare_schedule; 3024 frame->prepare = prepare_schedule;
2121
2122 /* to avoid race conditions when a woken-up coro gets terminated */ 3025 /* to avoid race conditions when a woken-up coro gets terminated */
2123 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3026 /* we arrange for a temporary on_destroy that calls adjust (0) */
2124 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3027 frame->destroy = coro_semaphore_destroy;
2125 } 3028 }
2126} 3029}
2127 3030
2128static void 3031static void
2129slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3032slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2133} 3036}
2134 3037
2135static void 3038static void
2136slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3039slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2137{ 3040{
3041 if (items >= 2)
3042 {
3043 /* callback form */
3044 AV *av = (AV *)SvRV (arg [0]);
3045 SV *cb_cv = s_get_cv_croak (arg [1]);
3046
3047 av_push (av, SvREFCNT_inc_NN (cb_cv));
3048
3049 if (SvIVX (AvARRAY (av)[0]) > 0)
3050 coro_semaphore_adjust (aTHX_ av, 0);
3051
3052 frame->prepare = prepare_nop;
3053 frame->check = slf_check_nop;
3054 }
3055 else
3056 {
2138 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 3057 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2139 frame->check = slf_check_semaphore_wait; 3058 frame->check = slf_check_semaphore_wait;
3059 }
2140} 3060}
2141 3061
2142/*****************************************************************************/ 3062/* signal */
2143/* gensub: simple closure generation utility */
2144 3063
2145#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3064static void
2146 3065coro_signal_wake (pTHX_ AV *av, int count)
2147/* create a closure from XS, returns a code reference */
2148/* the arg can be accessed via GENSUB_ARG from the callback */
2149/* the callback must use dXSARGS/XSRETURN */
2150static SV *
2151gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2152{ 3066{
2153 CV *cv = (CV *)newSV (0); 3067 SvIVX (AvARRAY (av)[0]) = 0;
2154 3068
2155 sv_upgrade ((SV *)cv, SVt_PVCV); 3069 /* now signal count waiters */
3070 while (count > 0 && AvFILLp (av) > 0)
3071 {
3072 SV *cb;
2156 3073
2157 CvANON_on (cv); 3074 /* swap first two elements so we can shift a waiter */
2158 CvISXSUB_on (cv); 3075 cb = AvARRAY (av)[0];
2159 CvXSUB (cv) = xsub; 3076 AvARRAY (av)[0] = AvARRAY (av)[1];
2160 GENSUB_ARG = arg; 3077 AvARRAY (av)[1] = cb;
2161 3078
2162 return newRV_noinc ((SV *)cv); 3079 cb = av_shift (av);
3080
3081 if (SvTYPE (cb) == SVt_PVCV)
3082 {
3083 dSP;
3084 PUSHMARK (SP);
3085 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3086 PUTBACK;
3087 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3088 }
3089 else
3090 {
3091 api_ready (aTHX_ cb);
3092 sv_setiv (cb, 0); /* signal waiter */
3093 }
3094
3095 SvREFCNT_dec (cb);
3096
3097 --count;
3098 }
3099}
3100
3101static int
3102slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3103{
3104 /* if we are about to throw, also stop waiting */
3105 return SvROK ((SV *)frame->data) && !CORO_THROW;
3106}
3107
3108static void
3109slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3110{
3111 AV *av = (AV *)SvRV (arg [0]);
3112
3113 if (items >= 2)
3114 {
3115 SV *cb_cv = s_get_cv_croak (arg [1]);
3116 av_push (av, SvREFCNT_inc_NN (cb_cv));
3117
3118 if (SvIVX (AvARRAY (av)[0]))
3119 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3120
3121 frame->prepare = prepare_nop;
3122 frame->check = slf_check_nop;
3123 }
3124 else if (SvIVX (AvARRAY (av)[0]))
3125 {
3126 SvIVX (AvARRAY (av)[0]) = 0;
3127 frame->prepare = prepare_nop;
3128 frame->check = slf_check_nop;
3129 }
3130 else
3131 {
3132 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3133
3134 av_push (av, waiter);
3135
3136 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3137 frame->prepare = prepare_schedule;
3138 frame->check = slf_check_signal_wait;
3139 }
2163} 3140}
2164 3141
2165/*****************************************************************************/ 3142/*****************************************************************************/
2166/* Coro::AIO */ 3143/* Coro::AIO */
2167 3144
… …
2178 3155
2179static void 3156static void
2180coro_aio_callback (pTHX_ CV *cv) 3157coro_aio_callback (pTHX_ CV *cv)
2181{ 3158{
2182 dXSARGS; 3159 dXSARGS;
2183 AV *state = (AV *)GENSUB_ARG; 3160 AV *state = (AV *)S_GENSUB_ARG;
2184 SV *coro = av_pop (state); 3161 SV *coro = av_pop (state);
2185 SV *data_sv = newSV (sizeof (struct io_state)); 3162 SV *data_sv = newSV (sizeof (struct io_state));
2186 3163
2187 av_extend (state, items); 3164 av_extend (state, items - 1);
2188 3165
2189 sv_upgrade (data_sv, SVt_PV); 3166 sv_upgrade (data_sv, SVt_PV);
2190 SvCUR_set (data_sv, sizeof (struct io_state)); 3167 SvCUR_set (data_sv, sizeof (struct io_state));
2191 SvPOK_only (data_sv); 3168 SvPOK_only (data_sv);
2192 3169
… …
2273 dSP; 3250 dSP;
2274 3251
2275 static SV *prio_cv; 3252 static SV *prio_cv;
2276 static SV *prio_sv; 3253 static SV *prio_sv;
2277 3254
2278 if (expect_false (!prio_cv)) 3255 if (ecb_expect_false (!prio_cv))
2279 { 3256 {
2280 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3257 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2281 prio_sv = newSViv (0); 3258 prio_sv = newSViv (0);
2282 } 3259 }
2283 3260
… …
2302 3279
2303 for (i = 0; i < items; ++i) 3280 for (i = 0; i < items; ++i)
2304 PUSHs (arg [i]); 3281 PUSHs (arg [i]);
2305 3282
2306 /* now push the callback closure */ 3283 /* now push the callback closure */
2307 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3284 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2308 3285
2309 /* now call the AIO function - we assume our request is uncancelable */ 3286 /* now call the AIO function - we assume our request is uncancelable */
2310 PUTBACK; 3287 PUTBACK;
2311 call_sv ((SV *)req, G_VOID | G_DISCARD); 3288 call_sv ((SV *)req, G_VOID | G_DISCARD);
2312 } 3289 }
2313 3290
2314 /* now that the requets is going, we loop toll we have a result */ 3291 /* now that the request is going, we loop till we have a result */
2315 frame->data = (void *)state; 3292 frame->data = (void *)state;
2316 frame->prepare = prepare_schedule; 3293 frame->prepare = prepare_schedule;
2317 frame->check = slf_check_aio_req; 3294 frame->check = slf_check_aio_req;
2318} 3295}
2319 3296
… …
2326 3303
2327 XSRETURN_EMPTY; 3304 XSRETURN_EMPTY;
2328} 3305}
2329 3306
2330/*****************************************************************************/ 3307/*****************************************************************************/
3308
3309#if CORO_CLONE
3310# include "clone.c"
3311#endif
3312
3313/*****************************************************************************/
3314
3315static SV *
3316coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3317{
3318 SV *coro_sv;
3319 struct coro *coro;
3320 MAGIC *mg;
3321 HV *hv;
3322 SV *cb;
3323 int i;
3324
3325 if (argc > 0)
3326 {
3327 cb = s_get_cv_croak (argv [0]);
3328
3329 if (!is_coro)
3330 {
3331 if (CvISXSUB (cb))
3332 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3333
3334 if (!CvROOT (cb))
3335 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3336 }
3337 }
3338
3339 Newz (0, coro, 1, struct coro);
3340 coro->args = newAV ();
3341 coro->flags = CF_NEW;
3342
3343 if (coro_first) coro_first->prev = coro;
3344 coro->next = coro_first;
3345 coro_first = coro;
3346
3347 coro->hv = hv = newHV ();
3348 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3349 mg->mg_flags |= MGf_DUP;
3350 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3351
3352 if (argc > 0)
3353 {
3354 av_extend (coro->args, argc + is_coro - 1);
3355
3356 if (is_coro)
3357 {
3358 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3359 cb = (SV *)cv_coro_run;
3360 }
3361
3362 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3363
3364 for (i = 1; i < argc; i++)
3365 av_push (coro->args, newSVsv (argv [i]));
3366 }
3367
3368 return coro_sv;
3369}
3370
3371#ifndef __cplusplus
3372ecb_cold XS(boot_Coro__State);
3373#endif
3374
3375#if CORO_JIT
3376
3377static void ecb_noinline ecb_cold
3378pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3379{
3380 dSP;
3381 AV *av = newAV ();
3382
3383 av_store (av, 3, newSVuv (d));
3384 av_store (av, 2, newSVuv (c));
3385 av_store (av, 1, newSVuv (b));
3386 av_store (av, 0, newSVuv (a));
3387
3388 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3389
3390 PUTBACK;
3391}
3392
3393static void ecb_noinline ecb_cold
3394jit_init (pTHX)
3395{
3396 dSP;
3397 SV *load, *save;
3398 char *map_base;
3399 char *load_ptr, *save_ptr;
3400 STRLEN load_len, save_len, map_len;
3401 int count;
3402
3403 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3404
3405 PUSHMARK (SP);
3406#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3407# include "state.h"
3408#undef VARx
3409 count = call_pv ("Coro::State::_jit", G_ARRAY);
3410 SPAGAIN;
3411
3412 save = POPs; save_ptr = SvPVbyte (save, save_len);
3413 load = POPs; load_ptr = SvPVbyte (load, load_len);
3414
3415 map_len = load_len + save_len + 16;
3416
3417 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3418
3419 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3420
3421 load_perl_slots = (load_save_perl_slots_type)map_base;
3422 memcpy (map_base, load_ptr, load_len);
3423
3424 map_base += (load_len + 15) & ~15;
3425
3426 save_perl_slots = (load_save_perl_slots_type)map_base;
3427 memcpy (map_base, save_ptr, save_len);
3428
3429 /* we are good citizens and try to make the page read-only, so the evil evil */
3430 /* hackers might have it a bit more difficult */
3431 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3432
3433 PUTBACK;
3434 eval_pv ("undef &Coro::State::_jit", 1);
3435}
3436
3437#endif
2331 3438
2332MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3439MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2333 3440
2334PROTOTYPES: DISABLE 3441PROTOTYPES: DISABLE
2335 3442
… …
2340 coro_thx = PERL_GET_CONTEXT; 3447 coro_thx = PERL_GET_CONTEXT;
2341# endif 3448# endif
2342#endif 3449#endif
2343 BOOT_PAGESIZE; 3450 BOOT_PAGESIZE;
2344 3451
3452 /* perl defines these to check for existance first, but why it doesn't */
3453 /* just create them one at init time is not clear to me, except for */
3454 /* programs trying to delete them, but... */
3455 /* anyway, we declare this as invalid and make sure they are initialised here */
3456 DEFSV;
3457 ERRSV;
3458
3459 cctx_current = cctx_new_empty ();
3460
2345 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3461 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2346 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3462 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2347 3463
2348 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3464 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2349 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3465 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2368 3484
2369 { 3485 {
2370 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3486 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2371 3487
2372 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3488 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2373 hv_store_ent (PL_custom_op_names, slf, 3489 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2374 newSVpv ("coro_slf", 0), 0);
2375 3490
2376 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3491 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2377 hv_store_ent (PL_custom_op_descs, slf, 3492 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2378 newSVpv ("coro schedule like function", 0), 0);
2379 } 3493 }
2380 3494
2381 coroapi.ver = CORO_API_VERSION; 3495 coroapi.ver = CORO_API_VERSION;
2382 coroapi.rev = CORO_API_REVISION; 3496 coroapi.rev = CORO_API_REVISION;
2383 3497
… …
2388 coroapi.prepare_nop = prepare_nop; 3502 coroapi.prepare_nop = prepare_nop;
2389 coroapi.prepare_schedule = prepare_schedule; 3503 coroapi.prepare_schedule = prepare_schedule;
2390 coroapi.prepare_cede = prepare_cede; 3504 coroapi.prepare_cede = prepare_cede;
2391 coroapi.prepare_cede_notself = prepare_cede_notself; 3505 coroapi.prepare_cede_notself = prepare_cede_notself;
2392 3506
2393 { 3507 time_init (aTHX);
2394 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2395 3508
2396 if (!svp) croak ("Time::HiRes is required");
2397 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2398
2399 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2400 }
2401
2402 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3509 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3510#if CORO_JIT
3511 PUTBACK;
3512 jit_init (aTHX);
3513 SPAGAIN;
3514#endif
2403} 3515}
2404 3516
2405SV * 3517SV *
2406new (char *klass, ...) 3518new (SV *klass, ...)
3519 ALIAS:
3520 Coro::new = 1
2407 CODE: 3521 CODE:
2408{ 3522 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2409 struct coro *coro; 3523 OUTPUT:
2410 MAGIC *mg;
2411 HV *hv;
2412 int i;
2413
2414 Newz (0, coro, 1, struct coro);
2415 coro->args = newAV ();
2416 coro->flags = CF_NEW;
2417
2418 if (coro_first) coro_first->prev = coro;
2419 coro->next = coro_first;
2420 coro_first = coro;
2421
2422 coro->hv = hv = newHV ();
2423 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2424 mg->mg_flags |= MGf_DUP;
2425 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2426
2427 av_extend (coro->args, items - 1);
2428 for (i = 1; i < items; i++)
2429 av_push (coro->args, newSVsv (ST (i)));
2430}
2431 OUTPUT:
2432 RETVAL 3524 RETVAL
2433 3525
2434void 3526void
2435transfer (...) 3527transfer (...)
2436 PROTOTYPE: $$ 3528 PROTOTYPE: $$
2437 CODE: 3529 CODE:
2438 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3530 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2439 3531
2440bool
2441_destroy (SV *coro_sv)
2442 CODE:
2443 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2444 OUTPUT:
2445 RETVAL
2446
2447void 3532void
2448_exit (int code) 3533_exit (int code)
2449 PROTOTYPE: $ 3534 PROTOTYPE: $
2450 CODE: 3535 CODE:
2451 _exit (code); 3536 _exit (code);
3537
3538SV *
3539clone (Coro::State coro)
3540 CODE:
3541{
3542#if CORO_CLONE
3543 struct coro *ncoro = coro_clone (aTHX_ coro);
3544 MAGIC *mg;
3545 /* TODO: too much duplication */
3546 ncoro->hv = newHV ();
3547 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3548 mg->mg_flags |= MGf_DUP;
3549 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3550#else
3551 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3552#endif
3553}
3554 OUTPUT:
3555 RETVAL
2452 3556
2453int 3557int
2454cctx_stacksize (int new_stacksize = 0) 3558cctx_stacksize (int new_stacksize = 0)
2455 PROTOTYPE: ;$ 3559 PROTOTYPE: ;$
2456 CODE: 3560 CODE:
… …
2506 eval = 1 3610 eval = 1
2507 CODE: 3611 CODE:
2508{ 3612{
2509 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3613 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2510 { 3614 {
2511 struct coro temp; 3615 struct coro *current = SvSTATE_current;
3616 struct CoroSLF slf_save;
2512 3617
2513 if (!(coro->flags & CF_RUNNING)) 3618 if (current != coro)
2514 { 3619 {
2515 PUTBACK; 3620 PUTBACK;
2516 save_perl (aTHX_ &temp); 3621 save_perl (aTHX_ current);
2517 load_perl (aTHX_ coro); 3622 load_perl (aTHX_ coro);
3623 /* the coro is most likely in an active SLF call.
3624 * while not strictly required (the code we execute is
3625 * not allowed to call any SLF functions), it's cleaner
3626 * to reinitialise the slf_frame and restore it later.
3627 * This might one day allow us to actually do SLF calls
3628 * from code executed here.
3629 */
3630 slf_save = slf_frame;
3631 slf_frame.prepare = 0;
3632 SPAGAIN;
2518 } 3633 }
2519 3634
2520 {
2521 dSP;
2522 ENTER;
2523 SAVETMPS;
2524 PUTBACK;
2525 PUSHSTACK; 3635 PUSHSTACK;
3636
2526 PUSHMARK (SP); 3637 PUSHMARK (SP);
3638 PUTBACK;
2527 3639
2528 if (ix) 3640 if (ix)
2529 eval_sv (coderef, 0); 3641 eval_sv (coderef, 0);
2530 else 3642 else
2531 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3643 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 3644
2533 POPSTACK; 3645 POPSTACK;
2534 SPAGAIN; 3646 SPAGAIN;
2535 FREETMPS;
2536 LEAVE;
2537 PUTBACK;
2538 }
2539 3647
2540 if (!(coro->flags & CF_RUNNING)) 3648 if (current != coro)
2541 { 3649 {
3650 PUTBACK;
3651 slf_frame = slf_save;
2542 save_perl (aTHX_ coro); 3652 save_perl (aTHX_ coro);
2543 load_perl (aTHX_ &temp); 3653 load_perl (aTHX_ current);
2544 SPAGAIN; 3654 SPAGAIN;
2545 } 3655 }
2546 } 3656 }
2547} 3657}
2548 3658
… …
2551 PROTOTYPE: $ 3661 PROTOTYPE: $
2552 ALIAS: 3662 ALIAS:
2553 is_ready = CF_READY 3663 is_ready = CF_READY
2554 is_running = CF_RUNNING 3664 is_running = CF_RUNNING
2555 is_new = CF_NEW 3665 is_new = CF_NEW
2556 is_destroyed = CF_DESTROYED 3666 is_destroyed = CF_ZOMBIE
3667 is_zombie = CF_ZOMBIE
3668 is_suspended = CF_SUSPENDED
2557 CODE: 3669 CODE:
2558 RETVAL = boolSV (coro->flags & ix); 3670 RETVAL = boolSV (coro->flags & ix);
2559 OUTPUT: 3671 OUTPUT:
2560 RETVAL 3672 RETVAL
2561 3673
2562void 3674void
2563throw (Coro::State self, SV *throw = &PL_sv_undef) 3675throw (Coro::State self, SV *exception = &PL_sv_undef)
2564 PROTOTYPE: $;$ 3676 PROTOTYPE: $;$
2565 CODE: 3677 CODE:
2566{ 3678{
2567 struct coro *current = SvSTATE_current; 3679 struct coro *current = SvSTATE_current;
2568 SV **throwp = self == current ? &CORO_THROW : &self->except; 3680 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2569 SvREFCNT_dec (*throwp); 3681 SvREFCNT_dec (*exceptionp);
2570 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3682 SvGETMAGIC (exception);
3683 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2571} 3684}
2572 3685
2573void 3686void
2574api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3687api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2575 PROTOTYPE: $;$ 3688 PROTOTYPE: $;$
… …
2577 3690
2578SV * 3691SV *
2579has_cctx (Coro::State coro) 3692has_cctx (Coro::State coro)
2580 PROTOTYPE: $ 3693 PROTOTYPE: $
2581 CODE: 3694 CODE:
2582 RETVAL = boolSV (!!coro->cctx); 3695 /* maybe manage the running flag differently */
3696 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2583 OUTPUT: 3697 OUTPUT:
2584 RETVAL 3698 RETVAL
2585 3699
2586int 3700int
2587is_traced (Coro::State coro) 3701is_traced (Coro::State coro)
… …
2607 3721
2608void 3722void
2609force_cctx () 3723force_cctx ()
2610 PROTOTYPE: 3724 PROTOTYPE:
2611 CODE: 3725 CODE:
2612 SvSTATE_current->cctx->idle_sp = 0; 3726 cctx_current->idle_sp = 0;
2613 3727
2614void 3728void
2615swap_defsv (Coro::State self) 3729swap_defsv (Coro::State self)
2616 PROTOTYPE: $ 3730 PROTOTYPE: $
2617 ALIAS: 3731 ALIAS:
… …
2625 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3739 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2626 3740
2627 SV *tmp = *src; *src = *dst; *dst = tmp; 3741 SV *tmp = *src; *src = *dst; *dst = tmp;
2628 } 3742 }
2629 3743
3744void
3745cancel (Coro::State self)
3746 CODE:
3747 coro_state_destroy (aTHX_ self);
3748
3749SV *
3750enable_times (int enabled = enable_times)
3751 CODE:
3752{
3753 RETVAL = boolSV (enable_times);
3754
3755 if (enabled != enable_times)
3756 {
3757 enable_times = enabled;
3758
3759 coro_times_update ();
3760 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3761 }
3762}
3763 OUTPUT:
3764 RETVAL
3765
3766void
3767times (Coro::State self)
3768 PPCODE:
3769{
3770 struct coro *current = SvSTATE (coro_current);
3771
3772 if (ecb_expect_false (current == self))
3773 {
3774 coro_times_update ();
3775 coro_times_add (SvSTATE (coro_current));
3776 }
3777
3778 EXTEND (SP, 2);
3779 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3780 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3781
3782 if (ecb_expect_false (current == self))
3783 coro_times_sub (SvSTATE (coro_current));
3784}
3785
3786void
3787swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3788 CODE:
3789{
3790 struct coro *current = SvSTATE_current;
3791
3792 if (current == coro)
3793 SWAP_SVS (current);
3794
3795 if (!coro->swap_sv)
3796 coro->swap_sv = newAV ();
3797
3798 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3799 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3800
3801 if (current == coro)
3802 SWAP_SVS (current);
3803}
3804
2630 3805
2631MODULE = Coro::State PACKAGE = Coro 3806MODULE = Coro::State PACKAGE = Coro
2632 3807
2633BOOT: 3808BOOT:
2634{ 3809{
2635 int i;
2636
2637 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2638 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2639 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2640 3812 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2641 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3813 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2642 SvREADONLY_on (coro_current); 3814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3815 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3816 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3817 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2643 3818
3819 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3820 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3821 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3822 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3823
2644 coro_stash = gv_stashpv ("Coro", TRUE); 3824 coro_stash = gv_stashpv ("Coro", TRUE);
2645 3825
2646 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3826 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2647 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3827 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2648 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3828 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2649 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3829 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2650 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3830 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2651 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3831 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2652
2653 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2654 coro_ready[i] = newAV ();
2655 3832
2656 { 3833 {
2657 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3834 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2658 3835
2659 coroapi.schedule = api_schedule; 3836 coroapi.schedule = api_schedule;
3837 coroapi.schedule_to = api_schedule_to;
2660 coroapi.cede = api_cede; 3838 coroapi.cede = api_cede;
2661 coroapi.cede_notself = api_cede_notself; 3839 coroapi.cede_notself = api_cede_notself;
2662 coroapi.ready = api_ready; 3840 coroapi.ready = api_ready;
2663 coroapi.is_ready = api_is_ready; 3841 coroapi.is_ready = api_is_ready;
2664 coroapi.nready = coro_nready; 3842 coroapi.nready = coro_nready;
… …
2668 sv_setiv (sv, (IV)&coroapi); 3846 sv_setiv (sv, (IV)&coroapi);
2669 SvREADONLY_on (sv); 3847 SvREADONLY_on (sv);
2670 } 3848 }
2671} 3849}
2672 3850
3851SV *
3852async (...)
3853 PROTOTYPE: &@
3854 CODE:
3855 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3856 api_ready (aTHX_ RETVAL);
3857 OUTPUT:
3858 RETVAL
3859
3860void
3861_destroy (Coro::State coro)
3862 CODE:
3863 /* used by the manager thread */
3864 coro_state_destroy (aTHX_ coro);
3865
3866void
3867on_destroy (Coro::State coro, SV *cb)
3868 CODE:
3869 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3870
3871void
3872join (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_join);
3875
3876void
3877terminate (...)
3878 CODE:
3879 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3880
3881void
3882cancel (...)
3883 CODE:
3884 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3885
3886int
3887safe_cancel (Coro::State self, ...)
3888 C_ARGS: aTHX_ self, &ST (1), items - 1
3889
2673void 3890void
2674schedule (...) 3891schedule (...)
2675 CODE: 3892 CODE:
2676 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3893 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3894
3895void
3896schedule_to (...)
3897 CODE:
3898 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3899
3900void
3901cede_to (...)
3902 CODE:
3903 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2677 3904
2678void 3905void
2679cede (...) 3906cede (...)
2680 CODE: 3907 CODE:
2681 CORO_EXECUTE_SLF_XS (slf_init_cede); 3908 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2695void 3922void
2696_set_readyhook (SV *hook) 3923_set_readyhook (SV *hook)
2697 PROTOTYPE: $ 3924 PROTOTYPE: $
2698 CODE: 3925 CODE:
2699 SvREFCNT_dec (coro_readyhook); 3926 SvREFCNT_dec (coro_readyhook);
3927 SvGETMAGIC (hook);
3928 if (SvOK (hook))
3929 {
2700 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3930 coro_readyhook = newSVsv (hook);
3931 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3932 }
3933 else
3934 {
3935 coro_readyhook = 0;
3936 CORO_READYHOOK = 0;
3937 }
2701 3938
2702int 3939int
2703prio (Coro::State coro, int newprio = 0) 3940prio (Coro::State coro, int newprio = 0)
2704 PROTOTYPE: $;$ 3941 PROTOTYPE: $;$
2705 ALIAS: 3942 ALIAS:
… …
2711 if (items > 1) 3948 if (items > 1)
2712 { 3949 {
2713 if (ix) 3950 if (ix)
2714 newprio = coro->prio - newprio; 3951 newprio = coro->prio - newprio;
2715 3952
2716 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3953 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2717 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3954 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2718 3955
2719 coro->prio = newprio; 3956 coro->prio = newprio;
2720 } 3957 }
2721} 3958}
2722 OUTPUT: 3959 OUTPUT:
… …
2736 CODE: 3973 CODE:
2737 RETVAL = coro_nready; 3974 RETVAL = coro_nready;
2738 OUTPUT: 3975 OUTPUT:
2739 RETVAL 3976 RETVAL
2740 3977
2741# for async_pool speedup
2742void 3978void
2743_pool_1 (SV *cb) 3979suspend (Coro::State self)
3980 PROTOTYPE: $
2744 CODE: 3981 CODE:
2745{ 3982 self->flags |= CF_SUSPENDED;
2746 HV *hv = (HV *)SvRV (coro_current);
2747 struct coro *coro = SvSTATE_hv ((SV *)hv);
2748 AV *defav = GvAV (PL_defgv);
2749 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2750 AV *invoke_av;
2751 int i, len;
2752 3983
2753 if (!invoke) 3984void
3985resume (Coro::State self)
3986 PROTOTYPE: $
3987 CODE:
3988 self->flags &= ~CF_SUSPENDED;
3989
3990void
3991_pool_handler (...)
3992 CODE:
3993 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3994
3995void
3996async_pool (SV *cv, ...)
3997 PROTOTYPE: &@
3998 PPCODE:
3999{
4000 HV *hv = (HV *)av_pop (av_async_pool);
4001 AV *av = newAV ();
4002 SV *cb = ST (0);
4003 int i;
4004
4005 av_extend (av, items - 2);
4006 for (i = 1; i < items; ++i)
4007 av_push (av, SvREFCNT_inc_NN (ST (i)));
4008
4009 if ((SV *)hv == &PL_sv_undef)
2754 { 4010 {
2755 SV *old = PL_diehook; 4011 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2756 PL_diehook = 0; 4012 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2757 SvREFCNT_dec (old); 4013 SvREFCNT_dec (sv);
2758 croak ("\3async_pool terminate\2\n");
2759 } 4014 }
2760 4015
2761 SvREFCNT_dec (coro->saved_deffh);
2762 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2763
2764 hv_store (hv, "desc", sizeof ("desc") - 1,
2765 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2766
2767 invoke_av = (AV *)SvRV (invoke);
2768 len = av_len (invoke_av);
2769
2770 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2771
2772 if (len > 0)
2773 { 4016 {
2774 av_fill (defav, len - 1); 4017 struct coro *coro = SvSTATE_hv (hv);
2775 for (i = 0; i < len; ++i) 4018
2776 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4019 assert (!coro->invoke_cb);
4020 assert (!coro->invoke_av);
4021 coro->invoke_cb = SvREFCNT_inc (cb);
4022 coro->invoke_av = av;
2777 } 4023 }
4024
4025 api_ready (aTHX_ (SV *)hv);
4026
4027 if (GIMME_V != G_VOID)
4028 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4029 else
4030 SvREFCNT_dec (hv);
2778} 4031}
4032
4033SV *
4034rouse_cb ()
4035 PROTOTYPE:
4036 CODE:
4037 RETVAL = coro_new_rouse_cb (aTHX);
4038 OUTPUT:
4039 RETVAL
2779 4040
2780void 4041void
2781_pool_2 (SV *cb) 4042rouse_wait (...)
4043 PROTOTYPE: ;$
4044 PPCODE:
4045 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4046
4047void
4048on_enter (SV *block)
4049 ALIAS:
4050 on_leave = 1
4051 PROTOTYPE: &
2782 CODE: 4052 CODE:
2783{ 4053{
2784 HV *hv = (HV *)SvRV (coro_current);
2785 struct coro *coro = SvSTATE_hv ((SV *)hv); 4054 struct coro *coro = SvSTATE_current;
4055 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2786 4056
2787 sv_setsv (cb, &PL_sv_undef); 4057 block = s_get_cv_croak (block);
2788 4058
2789 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4059 if (!*avp)
2790 coro->saved_deffh = 0; 4060 *avp = newAV ();
2791 4061
2792 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4062 av_push (*avp, SvREFCNT_inc (block));
2793 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2794 {
2795 SV *old = PL_diehook;
2796 PL_diehook = 0;
2797 SvREFCNT_dec (old);
2798 croak ("\3async_pool terminate\2\n");
2799 }
2800 4063
2801 av_clear (GvAV (PL_defgv)); 4064 if (!ix)
2802 hv_store (hv, "desc", sizeof ("desc") - 1, 4065 on_enterleave_call (aTHX_ block);
2803 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2804 4066
2805 coro->prio = 0; 4067 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2806 4068 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2807 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4069 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2808 api_trace (aTHX_ coro_current, 0);
2809
2810 av_push (av_async_pool, newSVsv (coro_current));
2811} 4070}
2812 4071
2813 4072
2814MODULE = Coro::State PACKAGE = PerlIO::cede 4073MODULE = Coro::State PACKAGE = PerlIO::cede
2815 4074
… …
2820MODULE = Coro::State PACKAGE = Coro::Semaphore 4079MODULE = Coro::State PACKAGE = Coro::Semaphore
2821 4080
2822SV * 4081SV *
2823new (SV *klass, SV *count = 0) 4082new (SV *klass, SV *count = 0)
2824 CODE: 4083 CODE:
4084{
4085 int semcnt = 1;
4086
4087 if (count)
4088 {
4089 SvGETMAGIC (count);
4090
4091 if (SvOK (count))
4092 semcnt = SvIV (count);
4093 }
4094
2825 RETVAL = sv_bless ( 4095 RETVAL = sv_bless (
2826 coro_semaphore_new (count && SvOK (count) ? SvIV (count) : 1), 4096 coro_waitarray_new (aTHX_ semcnt),
2827 GvSTASH (CvGV (cv)) 4097 GvSTASH (CvGV (cv))
2828 ); 4098 );
4099}
2829 OUTPUT: 4100 OUTPUT:
2830 RETVAL 4101 RETVAL
2831 4102
2832# helper for Coro::Channel 4103# helper for Coro::Channel and others
2833SV * 4104SV *
2834_alloc (int count) 4105_alloc (int count)
2835 CODE: 4106 CODE:
2836 RETVAL = coro_semaphore_new (count); 4107 RETVAL = coro_waitarray_new (aTHX_ count);
2837 OUTPUT: 4108 OUTPUT:
2838 RETVAL 4109 RETVAL
2839 4110
2840SV * 4111SV *
2841count (SV *self) 4112count (SV *self)
… …
2850 adjust = 1 4121 adjust = 1
2851 CODE: 4122 CODE:
2852 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4123 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2853 4124
2854void 4125void
2855down (SV *self) 4126down (...)
2856 ALIAS:
2857 Coro::Signal::wait = 0
2858 CODE: 4127 CODE:
2859 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4128 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
2860 4129
2861void 4130void
2862wait (SV *self) 4131wait (...)
2863 CODE: 4132 CODE:
2864 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 4133 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2865 4134
2866void 4135void
2867try (SV *self) 4136try (SV *self)
… …
2897 for (i = 1; i <= wcount; ++i) 4166 for (i = 1; i <= wcount; ++i)
2898 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4167 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2899 } 4168 }
2900} 4169}
2901 4170
4171MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4172
4173void
4174_may_delete (SV *sem, int count, unsigned int extra_refs)
4175 PPCODE:
4176{
4177 AV *av = (AV *)SvRV (sem);
4178
4179 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4180 && AvFILLp (av) == 0 /* no waiters, just count */
4181 && SvIV (AvARRAY (av)[0]) == count)
4182 XSRETURN_YES;
4183
4184 XSRETURN_NO;
4185}
4186
2902MODULE = Coro::State PACKAGE = Coro::Signal 4187MODULE = Coro::State PACKAGE = Coro::Signal
2903 4188
2904SV * 4189SV *
2905new (SV *klass) 4190new (SV *klass)
2906 CODE: 4191 CODE:
2907 RETVAL = sv_bless ( 4192 RETVAL = sv_bless (
2908 coro_semaphore_new (0), 4193 coro_waitarray_new (aTHX_ 0),
2909 GvSTASH (CvGV (cv)) 4194 GvSTASH (CvGV (cv))
2910 ); 4195 );
2911 OUTPUT: 4196 OUTPUT:
2912 RETVAL 4197 RETVAL
2913 4198
2914void 4199void
2915broadcast (SV *self, int adjust = 1) 4200wait (...)
2916 CODE: 4201 CODE:
4202 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4203
4204void
4205broadcast (SV *self)
4206 CODE:
4207{
4208 AV *av = (AV *)SvRV (self);
4209 coro_signal_wake (aTHX_ av, AvFILLp (av));
4210}
4211
4212void
4213send (SV *self)
4214 CODE:
2917{ 4215{
2918 AV *av = (AV *)SvRV (self); 4216 AV *av = (AV *)SvRV (self);
2919 SvIVX (AvARRAY (av)[0]) = 0; /* not necessary, but gives me fuzzy warm feelings */ 4217
2920 coro_semaphore_adjust (aTHX_ av, AvFILLp (av) + 1 - 1); 4218 if (AvFILLp (av))
4219 coro_signal_wake (aTHX_ av, 1);
4220 else
2921 SvIVX (AvARRAY (av)[0]) = 0; /* necessary */ 4221 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2922} 4222}
4223
4224IV
4225awaited (SV *self)
4226 CODE:
4227 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4228 OUTPUT:
4229 RETVAL
2923 4230
2924 4231
2925MODULE = Coro::State PACKAGE = Coro::AnyEvent 4232MODULE = Coro::State PACKAGE = Coro::AnyEvent
2926 4233
2927BOOT: 4234BOOT:
… …
2955 4262
2956void 4263void
2957_register (char *target, char *proto, SV *req) 4264_register (char *target, char *proto, SV *req)
2958 CODE: 4265 CODE:
2959{ 4266{
2960 HV *st; 4267 SV *req_cv = s_get_cv_croak (req);
2961 GV *gvp;
2962 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2963 /* newXSproto doesn't return the CV on 5.8 */ 4268 /* newXSproto doesn't return the CV on 5.8 */
2964 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4269 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2965 sv_setpv ((SV *)slf_cv, proto); 4270 sv_setpv ((SV *)slf_cv, proto);
2966 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4271 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2967} 4272}
2968 4273
4274MODULE = Coro::State PACKAGE = Coro::Select
4275
4276void
4277patch_pp_sselect ()
4278 CODE:
4279 if (!coro_old_pp_sselect)
4280 {
4281 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4282 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4283 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4284 }
4285
4286void
4287unpatch_pp_sselect ()
4288 CODE:
4289 if (coro_old_pp_sselect)
4290 {
4291 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4292 coro_old_pp_sselect = 0;
4293 }
4294

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