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Comparing Coro/Coro/State.xs (file contents):
Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC vs.
Revision 1.365 by root, Mon Jul 20 16:18:30 2009 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "schmorp.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
15#include <inttypes.h> /* portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif
16 25
17#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
18# include <unistd.h> 27# include <unistd.h>
19# include <sys/mman.h> 28# include <sys/mman.h>
20# ifndef MAP_ANONYMOUS 29# ifndef MAP_ANONYMOUS
… …
37# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
38#endif 47#endif
39 48
40#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
41# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
42# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43#else
44# define REGISTER_STACK(cctx,start,end)
45#endif 51#endif
46 52
47/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
48#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
49
50#define PERL_VERSION_ATLEAST(a,b,c) \
51 (PERL_REVISION > (a) \
52 || (PERL_REVISION == (a) \
53 && (PERL_VERSION > (b) \
54 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
55
56#if !PERL_VERSION_ATLEAST (5,6,0)
57# ifndef PL_ppaddr
58# define PL_ppaddr ppaddr
59# endif
60# ifndef call_sv
61# define call_sv perl_call_sv
62# endif
63# ifndef get_sv
64# define get_sv perl_get_sv
65# endif
66# ifndef get_cv
67# define get_cv perl_get_cv
68# endif
69# ifndef IS_PADGV
70# define IS_PADGV(v) 0
71# endif
72# ifndef IS_PADCONST
73# define IS_PADCONST(v) 0
74# endif
75#endif
76
77/* 5.8.7 */
78#ifndef SvRV_set
79# define SvRV_set(s,v) SvRV(s) = (v)
80#endif
81
82/* 5.8.8 */
83#ifndef GV_NOTQUAL
84# define GV_NOTQUAL 0
85#endif
86#ifndef newSV
87# define newSV(l) NEWSV(0,l)
88#endif
89 55
90#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
92#endif 58#endif
93 59
… …
100# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
101#endif 67#endif
102 68
103/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
104 * portable way as possible. */ 70 * portable way as possible. */
71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
73# define STACKLEVEL __builtin_frame_address (0)
74#else
105#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
106#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
107 78
108#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
109 80
110#if __GNUC__ >= 3 81#if __GNUC__ >= 3
111# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
112# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
114#else 85#else
115# define attribute(x) 86# define attribute(x)
116# define BARRIER
117# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
118#endif 89#endif
119 90
120#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
121#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
122 93
123#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
124 95
125#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
126 98
127#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
128static perl_mutex coro_mutex; 100# if CORO_PTHREAD
129# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
130# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
131#else
132# define LOCK (void)0
133# define UNLOCK (void)0
134#endif 103#endif
135 104
136#define strpair(const) const, sizeof (const) - 1 105#ifdef __linux
106# include <time.h> /* for timespec */
107# include <syscall.h> /* for SYS_* */
108# ifdef SYS_clock_gettime
109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
137 114
138/* helper storage struct for Coro::AIO */ 115static double (*nvtime)(); /* so why doesn't it take void? */
139struct io_state 116static void (*u2time)(pTHX_ UV ret[2]);
140{
141 int errorno;
142 I32 laststype;
143 int laststatval;
144 Stat_t statcache;
145};
146 117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121
122static U32 cctx_gen;
147static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
148static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
149static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
150static JMPENV *main_top_env; 126static JMPENV *main_top_env;
151static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
152static SV *coro_mortal; /* will be freed after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
153 133
154static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
155static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
156 136static SV *rv_diehook;
137static SV *rv_warnhook;
157static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
158static SV *sv_diehook;
159static SV *sv_warnhook;
160 139
161/* async_pool helper stuff */ 140/* async_pool helper stuff */
162static SV *sv_pool_rss; 141static SV *sv_pool_rss;
163static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
164static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
165 148
166static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */ 149/* Coro::AnyEvent */
150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
157
158static struct coro_cctx *cctx_first;
167static int cctx_count, cctx_idle[3]; 159static int cctx_count, cctx_idle;
168 160
169enum { 161enum {
170 CC_MAPPED = 0x01, 162 CC_MAPPED = 0x01,
171 CC_NOREUSE = 0x02, /* throw this away after tracing */ 163 CC_NOREUSE = 0x02, /* throw this away after tracing */
172 CC_TRACE = 0x04, 164 CC_TRACE = 0x04,
… …
174 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
176}; 168};
177 169
178/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
179typedef struct coro_cctx { 171typedef struct coro_cctx
172{
180 struct coro_cctx *next; 173 struct coro_cctx *next;
181 174
182 /* the stack */ 175 /* the stack */
183 void *sptr; 176 void *sptr;
184 size_t ssize; 177 size_t ssize;
… …
187 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189 JMPENV *top_env; 182 JMPENV *top_env;
190 coro_context cctx; 183 coro_context cctx;
191 184
185 U32 gen;
192#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
193 int valgrind_id; 187 int valgrind_id;
194#endif 188#endif
195 unsigned char flags; 189 unsigned char flags;
196} coro_cctx; 190} coro_cctx;
197 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
198enum { 196enum {
199 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
200 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
201 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
202 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
203}; 202};
204 203
205/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
206typedef struct { 205typedef struct
206{
207 SV *defsv; 207 SV *defsv;
208 AV *defav; 208 AV *defav;
209 SV *errsv; 209 SV *errsv;
210 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
211#define VAR(name,type) type name; 212#define VAR(name,type) type name;
212# include "state.h" 213# include "state.h"
213#undef VAR 214#undef VAR
214} perl_slots; 215} perl_slots;
215 216
216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
217 218
218/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
219struct coro { 220struct coro {
220 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
221 coro_cctx *cctx; 222 coro_cctx *cctx;
222 int gimme;
223 223
224 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
225 AV *mainstack; 229 AV *mainstack;
226 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
227 231
232 CV *startcv; /* the CV to execute */
228 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
229 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
230 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
231 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
232 238
233 /* statistics */ 239 /* statistics */
234 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
235 241
236 /* coro process data */ 242 /* coro process data */
237 int prio; 243 int prio;
238 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
239 246
240 /* async_pool */ 247 /* async_pool */
241 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
242 258
243 /* linked list */ 259 /* linked list */
244 struct coro *next, *prev; 260 struct coro *next, *prev;
245}; 261};
246 262
247typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
248typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
249 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
250/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
251 272
252#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
253#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
254#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
255#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
256#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
257#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
258 279
259/* for Coro.pm */ 280/* for Coro.pm */
260static SV *coro_current; 281static SV *coro_current;
261static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 282static SV *coro_readyhook;
262static int coro_nready; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static CV *cv_coro_run, *cv_coro_terminate;
263static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
287
288/** Coro::Select ************************************************************/
289
290static OP *(*coro_old_pp_sselect) (pTHX);
291static SV *coro_select_select;
292
293/* horrible hack, but if it works... */
294static OP *
295coro_pp_sselect (aTHX)
296{
297 dSP;
298 PUSHMARK (SP - 4); /* fake argument list */
299 XPUSHs (coro_select_select);
300 PUTBACK;
301
302 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
303 PL_op->op_flags |= OPf_STACKED;
304 PL_op->op_private = 0;
305 return PL_ppaddr [OP_ENTERSUB](aTHX);
306}
264 307
265/** lowlevel stuff **********************************************************/ 308/** lowlevel stuff **********************************************************/
266 309
267static SV * 310static SV *
268coro_get_sv (const char *name, int create) 311coro_get_sv (pTHX_ const char *name, int create)
269{ 312{
270#if PERL_VERSION_ATLEAST (5,9,0) 313#if PERL_VERSION_ATLEAST (5,10,0)
271 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
272 get_sv (name, create); 315 get_sv (name, create);
273#endif 316#endif
274 return get_sv (name, create); 317 return get_sv (name, create);
275} 318}
276 319
277static AV * 320static AV *
278coro_get_av (const char *name, int create) 321coro_get_av (pTHX_ const char *name, int create)
279{ 322{
280#if PERL_VERSION_ATLEAST (5,9,0) 323#if PERL_VERSION_ATLEAST (5,10,0)
281 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
282 get_av (name, create); 325 get_av (name, create);
283#endif 326#endif
284 return get_av (name, create); 327 return get_av (name, create);
285} 328}
286 329
287static HV * 330static HV *
288coro_get_hv (const char *name, int create) 331coro_get_hv (pTHX_ const char *name, int create)
289{ 332{
290#if PERL_VERSION_ATLEAST (5,9,0) 333#if PERL_VERSION_ATLEAST (5,10,0)
291 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 334 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
292 get_hv (name, create); 335 get_hv (name, create);
293#endif 336#endif
294 return get_hv (name, create); 337 return get_hv (name, create);
295} 338}
296 339
340INLINE void
341coro_times_update ()
342{
343#ifdef coro_clock_gettime
344 struct timespec ts;
345
346 ts.tv_sec = ts.tv_nsec = 0;
347 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
348 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
349
350 ts.tv_sec = ts.tv_nsec = 0;
351 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
352 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
353#else
354 dTHX;
355 UV tv[2];
356
357 u2time (aTHX_ tv);
358 time_real [0] = tv [0];
359 time_real [1] = tv [1] * 1000;
360#endif
361}
362
363INLINE void
364coro_times_add (struct coro *c)
365{
366 c->t_real [1] += time_real [1];
367 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
368 c->t_real [0] += time_real [0];
369
370 c->t_cpu [1] += time_cpu [1];
371 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
372 c->t_cpu [0] += time_cpu [0];
373}
374
375INLINE void
376coro_times_sub (struct coro *c)
377{
378 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
379 c->t_real [1] -= time_real [1];
380 c->t_real [0] -= time_real [0];
381
382 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
383 c->t_cpu [1] -= time_cpu [1];
384 c->t_cpu [0] -= time_cpu [0];
385}
386
387/*****************************************************************************/
388/* magic glue */
389
390#define CORO_MAGIC_type_cv 26
391#define CORO_MAGIC_type_state PERL_MAGIC_ext
392
393#define CORO_MAGIC_NN(sv, type) \
394 (expect_true (SvMAGIC (sv)->mg_type == type) \
395 ? SvMAGIC (sv) \
396 : mg_find (sv, type))
397
398#define CORO_MAGIC(sv, type) \
399 (expect_true (SvMAGIC (sv)) \
400 ? CORO_MAGIC_NN (sv, type) \
401 : 0)
402
403#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
404#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
405
406INLINE struct coro *
407SvSTATE_ (pTHX_ SV *coro)
408{
409 HV *stash;
410 MAGIC *mg;
411
412 if (SvROK (coro))
413 coro = SvRV (coro);
414
415 if (expect_false (SvTYPE (coro) != SVt_PVHV))
416 croak ("Coro::State object required");
417
418 stash = SvSTASH (coro);
419 if (expect_false (stash != coro_stash && stash != coro_state_stash))
420 {
421 /* very slow, but rare, check */
422 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
423 croak ("Coro::State object required");
424 }
425
426 mg = CORO_MAGIC_state (coro);
427 return (struct coro *)mg->mg_ptr;
428}
429
430#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
431
432/* faster than SvSTATE, but expects a coroutine hv */
433#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
434#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
435
436/*****************************************************************************/
437/* padlist management and caching */
438
297static AV * 439static AV *
298coro_clone_padlist (pTHX_ CV *cv) 440coro_derive_padlist (pTHX_ CV *cv)
299{ 441{
300 AV *padlist = CvPADLIST (cv); 442 AV *padlist = CvPADLIST (cv);
301 AV *newpadlist, *newpad; 443 AV *newpadlist, *newpad;
302 444
303 newpadlist = newAV (); 445 newpadlist = newAV ();
304 AvREAL_off (newpadlist); 446 AvREAL_off (newpadlist);
305#if PERL_VERSION_ATLEAST (5,9,0) 447#if PERL_VERSION_ATLEAST (5,10,0)
306 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 448 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307#else 449#else
308 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 450 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309#endif 451#endif
310 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 452 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311 --AvFILLp (padlist); 453 --AvFILLp (padlist);
312 454
313 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 455 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
314 av_store (newpadlist, 1, (SV *)newpad); 456 av_store (newpadlist, 1, (SV *)newpad);
315 457
316 return newpadlist; 458 return newpadlist;
317} 459}
318 460
319static void 461static void
320free_padlist (pTHX_ AV *padlist) 462free_padlist (pTHX_ AV *padlist)
321{ 463{
322 /* may be during global destruction */ 464 /* may be during global destruction */
323 if (SvREFCNT (padlist)) 465 if (!IN_DESTRUCT)
324 { 466 {
325 I32 i = AvFILLp (padlist); 467 I32 i = AvFILLp (padlist);
326 while (i >= 0) 468
469 while (i > 0) /* special-case index 0 */
327 { 470 {
328 SV **svp = av_fetch (padlist, i--, FALSE); 471 /* we try to be extra-careful here */
329 if (svp) 472 AV *av = (AV *)AvARRAY (padlist)[i--];
330 { 473 I32 j = AvFILLp (av);
331 SV *sv; 474
332 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 475 while (j >= 0)
476 SvREFCNT_dec (AvARRAY (av)[j--]);
477
478 AvFILLp (av) = -1;
333 SvREFCNT_dec (sv); 479 SvREFCNT_dec (av);
334
335 SvREFCNT_dec (*svp);
336 }
337 } 480 }
338 481
482 SvREFCNT_dec (AvARRAY (padlist)[0]);
483
484 AvFILLp (padlist) = -1;
339 SvREFCNT_dec ((SV*)padlist); 485 SvREFCNT_dec ((SV*)padlist);
340 } 486 }
341} 487}
342 488
343static int 489static int
344coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 490coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
345{ 491{
346 AV *padlist; 492 AV *padlist;
347 AV *av = (AV *)mg->mg_obj; 493 AV *av = (AV *)mg->mg_obj;
494
495 /* perl manages to free our internal AV and _then_ call us */
496 if (IN_DESTRUCT)
497 return 0;
348 498
349 /* casting is fun. */ 499 /* casting is fun. */
350 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 500 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351 free_padlist (aTHX_ padlist); 501 free_padlist (aTHX_ padlist);
352 502
353 SvREFCNT_dec (av); 503 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354 504
355 return 0; 505 return 0;
356} 506}
357 507
358#define PERL_MAGIC_coro PERL_MAGIC_ext 508static MGVTBL coro_cv_vtbl = {
359 509 0, 0, 0, 0,
360static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 510 coro_cv_free
361 511};
362#define CORO_MAGIC(cv) \
363 SvMAGIC (cv) \
364 ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
365 ? SvMAGIC (cv) \
366 : mg_find ((SV *)cv, PERL_MAGIC_coro) \
367 : 0
368
369static struct coro *
370SvSTATE_ (pTHX_ SV *coro)
371{
372 HV *stash;
373 MAGIC *mg;
374
375 if (SvROK (coro))
376 coro = SvRV (coro);
377
378 if (expect_false (SvTYPE (coro) != SVt_PVHV))
379 croak ("Coro::State object required");
380
381 stash = SvSTASH (coro);
382 if (expect_false (stash != coro_stash && stash != coro_state_stash))
383 {
384 /* very slow, but rare, check */
385 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386 croak ("Coro::State object required");
387 }
388
389 mg = CORO_MAGIC (coro);
390 return (struct coro *)mg->mg_ptr;
391}
392
393#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394 512
395/* the next two functions merely cache the padlists */ 513/* the next two functions merely cache the padlists */
396static void 514static void
397get_padlist (pTHX_ CV *cv) 515get_padlist (pTHX_ CV *cv)
398{ 516{
399 MAGIC *mg = CORO_MAGIC (cv); 517 MAGIC *mg = CORO_MAGIC_cv (cv);
400 AV *av; 518 AV *av;
401 519
402 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 520 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 521 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404 else 522 else
405 { 523 {
406#if CORO_PREFER_PERL_FUNCTIONS 524#if CORO_PREFER_PERL_FUNCTIONS
407 /* this is probably cleaner, but also slower? */ 525 /* this is probably cleaner? but also slower! */
526 /* in practise, it seems to be less stable */
408 CV *cp = Perl_cv_clone (cv); 527 CV *cp = Perl_cv_clone (aTHX_ cv);
409 CvPADLIST (cv) = CvPADLIST (cp); 528 CvPADLIST (cv) = CvPADLIST (cp);
410 CvPADLIST (cp) = 0; 529 CvPADLIST (cp) = 0;
411 SvREFCNT_dec (cp); 530 SvREFCNT_dec (cp);
412#else 531#else
413 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 532 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
414#endif 533#endif
415 } 534 }
416} 535}
417 536
418static void 537static void
419put_padlist (pTHX_ CV *cv) 538put_padlist (pTHX_ CV *cv)
420{ 539{
421 MAGIC *mg = CORO_MAGIC (cv); 540 MAGIC *mg = CORO_MAGIC_cv (cv);
422 AV *av; 541 AV *av;
423 542
424 if (expect_false (!mg)) 543 if (expect_false (!mg))
425 { 544 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428 mg->mg_virtual = &vtbl_coro;
429 mg->mg_obj = (SV *)newAV ();
430 }
431 545
432 av = (AV *)mg->mg_obj; 546 av = (AV *)mg->mg_obj;
433 547
434 if (expect_false (AvFILLp (av) >= AvMAX (av))) 548 if (expect_false (AvFILLp (av) >= AvMAX (av)))
435 av_extend (av, AvMAX (av) + 1); 549 av_extend (av, AvFILLp (av) + 1);
436 550
437 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 551 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
438} 552}
439 553
440/** load & save, init *******************************************************/ 554/** load & save, init *******************************************************/
555
556static void
557on_enterleave_call (pTHX_ SV *cb);
441 558
442static void 559static void
443load_perl (pTHX_ Coro__State c) 560load_perl (pTHX_ Coro__State c)
444{ 561{
445 perl_slots *slot = c->slot; 562 perl_slots *slot = c->slot;
446 c->slot = 0; 563 c->slot = 0;
447 564
448 PL_mainstack = c->mainstack; 565 PL_mainstack = c->mainstack;
449 566
450 GvSV (PL_defgv) = slot->defsv; 567 GvSV (PL_defgv) = slot->defsv;
451 GvAV (PL_defgv) = slot->defav; 568 GvAV (PL_defgv) = slot->defav;
452 GvSV (PL_errgv) = slot->errsv; 569 GvSV (PL_errgv) = slot->errsv;
453 GvSV (irsgv) = slot->irsgv; 570 GvSV (irsgv) = slot->irsgv;
571 GvHV (PL_hintgv) = slot->hinthv;
454 572
455 #define VAR(name,type) PL_ ## name = slot->name; 573 #define VAR(name,type) PL_ ## name = slot->name;
456 # include "state.h" 574 # include "state.h"
457 #undef VAR 575 #undef VAR
458
459 /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460 /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461 576
462 { 577 {
463 dSP; 578 dSP;
464 579
465 CV *cv; 580 CV *cv;
… …
472 CvPADLIST (cv) = (AV *)POPs; 587 CvPADLIST (cv) = (AV *)POPs;
473 } 588 }
474 589
475 PUTBACK; 590 PUTBACK;
476 } 591 }
592
593 slf_frame = c->slf_frame;
594 CORO_THROW = c->except;
595
596 if (expect_false (enable_times))
597 {
598 if (expect_false (!times_valid))
599 coro_times_update ();
600
601 coro_times_sub (c);
602 }
603
604 if (expect_false (c->on_enter))
605 {
606 int i;
607
608 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
609 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
610 }
477} 611}
478 612
479static void 613static void
480save_perl (pTHX_ Coro__State c) 614save_perl (pTHX_ Coro__State c)
481{ 615{
616 if (expect_false (c->on_leave))
617 {
618 int i;
619
620 for (i = AvFILLp (c->on_leave); i >= 0; --i)
621 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
622 }
623
624 times_valid = 0;
625
626 if (expect_false (enable_times))
627 {
628 coro_times_update (); times_valid = 1;
629 coro_times_add (c);
630 }
631
632 c->except = CORO_THROW;
633 c->slf_frame = slf_frame;
634
482 { 635 {
483 dSP; 636 dSP;
484 I32 cxix = cxstack_ix; 637 I32 cxix = cxstack_ix;
485 PERL_CONTEXT *ccstk = cxstack; 638 PERL_CONTEXT *ccstk = cxstack;
486 PERL_SI *top_si = PL_curstackinfo; 639 PERL_SI *top_si = PL_curstackinfo;
… …
496 { 649 {
497 while (expect_true (cxix >= 0)) 650 while (expect_true (cxix >= 0))
498 { 651 {
499 PERL_CONTEXT *cx = &ccstk[cxix--]; 652 PERL_CONTEXT *cx = &ccstk[cxix--];
500 653
501 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 654 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
502 { 655 {
503 CV *cv = cx->blk_sub.cv; 656 CV *cv = cx->blk_sub.cv;
504 657
505 if (expect_true (CvDEPTH (cv))) 658 if (expect_true (CvDEPTH (cv)))
506 { 659 {
507 EXTEND (SP, 3); 660 EXTEND (SP, 3);
508 PUSHs ((SV *)CvPADLIST (cv)); 661 PUSHs ((SV *)CvPADLIST (cv));
509 PUSHs (INT2PTR (SV *, CvDEPTH (cv))); 662 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510 PUSHs ((SV *)cv); 663 PUSHs ((SV *)cv);
511 664
512 CvDEPTH (cv) = 0; 665 CvDEPTH (cv) = 0;
513 get_padlist (aTHX_ cv); 666 get_padlist (aTHX_ cv);
514 } 667 }
… …
530 /* we manually unroll here, as usually 2 slots is enough */ 683 /* we manually unroll here, as usually 2 slots is enough */
531 if (SLOT_COUNT >= 1) CXINC; 684 if (SLOT_COUNT >= 1) CXINC;
532 if (SLOT_COUNT >= 2) CXINC; 685 if (SLOT_COUNT >= 2) CXINC;
533 if (SLOT_COUNT >= 3) CXINC; 686 if (SLOT_COUNT >= 3) CXINC;
534 { 687 {
535 int i; 688 unsigned int i;
536 for (i = 3; i < SLOT_COUNT; ++i) 689 for (i = 3; i < SLOT_COUNT; ++i)
537 CXINC; 690 CXINC;
538 } 691 }
539 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 692 cxstack_ix -= SLOT_COUNT; /* undo allocation */
540 693
541 c->mainstack = PL_mainstack; 694 c->mainstack = PL_mainstack;
542 695
543 { 696 {
544 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 697 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
545 698
546 slot->defav = GvAV (PL_defgv); 699 slot->defav = GvAV (PL_defgv);
547 slot->defsv = DEFSV; 700 slot->defsv = DEFSV;
548 slot->errsv = ERRSV; 701 slot->errsv = ERRSV;
549 slot->irsgv = GvSV (irsgv); 702 slot->irsgv = GvSV (irsgv);
703 slot->hinthv = GvHV (PL_hintgv);
550 704
551 #define VAR(name,type) slot->name = PL_ ## name; 705 #define VAR(name,type) slot->name = PL_ ## name;
552 # include "state.h" 706 # include "state.h"
553 #undef VAR 707 #undef VAR
554 } 708 }
555} 709}
556 710
557/* 711/*
558 * allocate various perl stacks. This is an exact copy 712 * allocate various perl stacks. This is almost an exact copy
559 * of perl.c:init_stacks, except that it uses less memory 713 * of perl.c:init_stacks, except that it uses less memory
560 * on the (sometimes correct) assumption that coroutines do 714 * on the (sometimes correct) assumption that coroutines do
561 * not usually need a lot of stackspace. 715 * not usually need a lot of stackspace.
562 */ 716 */
563#if CORO_PREFER_PERL_FUNCTIONS 717#if CORO_PREFER_PERL_FUNCTIONS
564# define coro_init_stacks init_stacks 718# define coro_init_stacks(thx) init_stacks ()
565#else 719#else
566static void 720static void
567coro_init_stacks (pTHX) 721coro_init_stacks (pTHX)
568{ 722{
569 PL_curstackinfo = new_stackinfo(32, 8); 723 PL_curstackinfo = new_stackinfo(32, 8);
… …
594 748
595 New(54,PL_savestack,24,ANY); 749 New(54,PL_savestack,24,ANY);
596 PL_savestack_ix = 0; 750 PL_savestack_ix = 0;
597 PL_savestack_max = 24; 751 PL_savestack_max = 24;
598 752
599#if !PERL_VERSION_ATLEAST (5,9,0) 753#if !PERL_VERSION_ATLEAST (5,10,0)
600 New(54,PL_retstack,4,OP*); 754 New(54,PL_retstack,4,OP*);
601 PL_retstack_ix = 0; 755 PL_retstack_ix = 0;
602 PL_retstack_max = 4; 756 PL_retstack_max = 4;
603#endif 757#endif
604} 758}
… …
606 760
607/* 761/*
608 * destroy the stacks, the callchain etc... 762 * destroy the stacks, the callchain etc...
609 */ 763 */
610static void 764static void
611coro_destroy_stacks (pTHX) 765coro_destruct_stacks (pTHX)
612{ 766{
613 while (PL_curstackinfo->si_next) 767 while (PL_curstackinfo->si_next)
614 PL_curstackinfo = PL_curstackinfo->si_next; 768 PL_curstackinfo = PL_curstackinfo->si_next;
615 769
616 while (PL_curstackinfo) 770 while (PL_curstackinfo)
… …
627 781
628 Safefree (PL_tmps_stack); 782 Safefree (PL_tmps_stack);
629 Safefree (PL_markstack); 783 Safefree (PL_markstack);
630 Safefree (PL_scopestack); 784 Safefree (PL_scopestack);
631 Safefree (PL_savestack); 785 Safefree (PL_savestack);
632#if !PERL_VERSION_ATLEAST (5,9,0) 786#if !PERL_VERSION_ATLEAST (5,10,0)
633 Safefree (PL_retstack); 787 Safefree (PL_retstack);
634#endif 788#endif
635} 789}
636 790
791#define CORO_RSS \
792 rss += sizeof (SYM (curstackinfo)); \
793 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
794 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
795 rss += SYM (tmps_max) * sizeof (SV *); \
796 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
797 rss += SYM (scopestack_max) * sizeof (I32); \
798 rss += SYM (savestack_max) * sizeof (ANY);
799
637static size_t 800static size_t
638coro_rss (pTHX_ struct coro *coro) 801coro_rss (pTHX_ struct coro *coro)
639{ 802{
640 size_t rss = sizeof (*coro); 803 size_t rss = sizeof (*coro);
641 804
642 if (coro->mainstack) 805 if (coro->mainstack)
643 { 806 {
644 perl_slots tmp_slot;
645 perl_slots *slot;
646
647 if (coro->flags & CF_RUNNING) 807 if (coro->flags & CF_RUNNING)
648 { 808 {
649 slot = &tmp_slot; 809 #define SYM(sym) PL_ ## sym
650 810 CORO_RSS;
651 #define VAR(name,type) slot->name = PL_ ## name;
652 # include "state.h"
653 #undef VAR 811 #undef SYM
654 } 812 }
655 else 813 else
656 slot = coro->slot; 814 {
815 #define SYM(sym) coro->slot->sym
816 CORO_RSS;
817 #undef SYM
818 }
819 }
657 820
658 rss += sizeof (slot->curstackinfo); 821 return rss;
659 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 822}
660 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661 rss += slot->tmps_max * sizeof (SV *);
662 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663 rss += slot->scopestack_max * sizeof (I32);
664 rss += slot->savestack_max * sizeof (ANY);
665 823
666#if !PERL_VERSION_ATLEAST (5,9,0) 824/** coroutine stack handling ************************************************/
667 rss += slot->retstack_max * sizeof (OP *); 825
826static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
827static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
828static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
829
830/* apparently < 5.8.8 */
831#ifndef MgPV_nolen_const
832#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
833 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
834 (const char*)(mg)->mg_ptr)
668#endif 835#endif
836
837/*
838 * This overrides the default magic get method of %SIG elements.
839 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
840 * and instead of trying to save and restore the hash elements, we just provide
841 * readback here.
842 */
843static int
844coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
845{
846 const char *s = MgPV_nolen_const (mg);
847
848 if (*s == '_')
669 } 849 {
850 SV **svp = 0;
670 851
852 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
853 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
854
855 if (svp)
856 {
857 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
858 return 0;
859 }
860 }
861
862 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
863}
864
865static int
866coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
867{
868 const char *s = MgPV_nolen_const (mg);
869
870 if (*s == '_')
871 {
872 SV **svp = 0;
873
874 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
875 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
876
877 if (svp)
878 {
879 SV *old = *svp;
880 *svp = 0;
881 SvREFCNT_dec (old);
882 return 0;
883 }
884 }
885
886 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
887}
888
889static int
890coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
891{
892 const char *s = MgPV_nolen_const (mg);
893
894 if (*s == '_')
895 {
896 SV **svp = 0;
897
898 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
899 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
900
901 if (svp)
902 {
903 SV *old = *svp;
904 *svp = SvOK (sv) ? newSVsv (sv) : 0;
905 SvREFCNT_dec (old);
906 return 0;
907 }
908 }
909
910 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
911}
912
913static void
914prepare_nop (pTHX_ struct coro_transfer_args *ta)
915{
916 /* kind of mega-hacky, but works */
917 ta->next = ta->prev = (struct coro *)ta;
918}
919
920static int
921slf_check_nop (pTHX_ struct CoroSLF *frame)
922{
671 return rss; 923 return 0;
672} 924}
673 925
674/** coroutine stack handling ************************************************/
675
676static void 926static int
927slf_check_repeat (pTHX_ struct CoroSLF *frame)
928{
929 return 1;
930}
931
932static UNOP coro_setup_op;
933
934static void NOINLINE /* noinline to keep it out of the transfer fast path */
677coro_setup (pTHX_ struct coro *coro) 935coro_setup (pTHX_ struct coro *coro)
678{ 936{
679 /* 937 /*
680 * emulate part of the perl startup here. 938 * emulate part of the perl startup here.
681 */ 939 */
… …
683 941
684 PL_runops = RUNOPS_DEFAULT; 942 PL_runops = RUNOPS_DEFAULT;
685 PL_curcop = &PL_compiling; 943 PL_curcop = &PL_compiling;
686 PL_in_eval = EVAL_NULL; 944 PL_in_eval = EVAL_NULL;
687 PL_comppad = 0; 945 PL_comppad = 0;
946 PL_comppad_name = 0;
947 PL_comppad_name_fill = 0;
948 PL_comppad_name_floor = 0;
688 PL_curpm = 0; 949 PL_curpm = 0;
689 PL_curpad = 0; 950 PL_curpad = 0;
690 PL_localizing = 0; 951 PL_localizing = 0;
691 PL_dirty = 0; 952 PL_dirty = 0;
692 PL_restartop = 0; 953 PL_restartop = 0;
693 PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); 954#if PERL_VERSION_ATLEAST (5,10,0)
694 PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); 955 PL_parser = 0;
956#endif
957 PL_hints = 0;
958
959 /* recreate the die/warn hooks */
960 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
961 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695 962
696 GvSV (PL_defgv) = newSV (0); 963 GvSV (PL_defgv) = newSV (0);
697 GvAV (PL_defgv) = coro->args; coro->args = 0; 964 GvAV (PL_defgv) = coro->args; coro->args = 0;
698 GvSV (PL_errgv) = newSV (0); 965 GvSV (PL_errgv) = newSV (0);
699 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 966 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
967 GvHV (PL_hintgv) = 0;
700 PL_rs = newSVsv (GvSV (irsgv)); 968 PL_rs = newSVsv (GvSV (irsgv));
701 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 969 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702 970
703 { 971 {
704 dSP; 972 dSP;
705 LOGOP myop; 973 UNOP myop;
706 974
707 Zero (&myop, 1, LOGOP); 975 Zero (&myop, 1, UNOP);
708 myop.op_next = Nullop; 976 myop.op_next = Nullop;
977 myop.op_type = OP_ENTERSUB;
709 myop.op_flags = OPf_WANT_VOID; 978 myop.op_flags = OPf_WANT_VOID;
710 979
711 PUSHMARK (SP); 980 PUSHMARK (SP);
712 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 981 PUSHs ((SV *)coro->startcv);
713 PUTBACK; 982 PUTBACK;
714 PL_op = (OP *)&myop; 983 PL_op = (OP *)&myop;
715 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 984 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716 SPAGAIN;
717
718 /*
719 * now its very tricky. the "tail" of the next transfer might end up
720 * either in a new cctx, or an existing one.
721 * in case of an existing one we have to take care of whatever
722 * entersub and transfer do to the perl stack.
723 */
724 ENTER;
725 EXTEND (SP, 4);
726 PUSHs ((SV *)0); /* items */
727 PUSHs ((SV *)0); /* ix, set_stacklevel */
728 PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729 PUSHs ((SV *)0); /* again */
730 PUTBACK;
731 } 985 }
732 986
733 /* this newly created coroutine might be run on an existing cctx which most 987 /* this newly created coroutine might be run on an existing cctx which most
734 * likely was suspended in set_stacklevel, called from entersub. 988 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
735 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
736 * so we ENTER here for symmetry
737 */ 989 */
738 ENTER; 990 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
739} 991 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
740 992
993 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
994 coro_setup_op.op_next = PL_op;
995 coro_setup_op.op_type = OP_ENTERSUB;
996 coro_setup_op.op_ppaddr = pp_slf;
997 /* no flags etc. required, as an init function won't be called */
998
999 PL_op = (OP *)&coro_setup_op;
1000
1001 /* copy throw, in case it was set before coro_setup */
1002 CORO_THROW = coro->except;
1003
1004 if (expect_false (enable_times))
1005 {
1006 coro_times_update ();
1007 coro_times_sub (coro);
1008 }
1009}
1010
741static void 1011static void
742coro_destroy (pTHX_ struct coro *coro) 1012coro_unwind_stacks (pTHX)
743{ 1013{
744 if (!IN_DESTRUCT) 1014 if (!IN_DESTRUCT)
745 { 1015 {
746 /* restore all saved variables and stuff */ 1016 /* restore all saved variables and stuff */
747 LEAVE_SCOPE (0); 1017 LEAVE_SCOPE (0);
… …
755 POPSTACK_TO (PL_mainstack); 1025 POPSTACK_TO (PL_mainstack);
756 1026
757 /* unwind main stack */ 1027 /* unwind main stack */
758 dounwind (-1); 1028 dounwind (-1);
759 } 1029 }
1030}
760 1031
761 SvREFCNT_dec (GvSV (PL_defgv)); 1032static void
762 SvREFCNT_dec (GvAV (PL_defgv)); 1033coro_destruct_perl (pTHX_ struct coro *coro)
763 SvREFCNT_dec (GvSV (PL_errgv)); 1034{
764 SvREFCNT_dec (PL_defoutgv); 1035 SV *svf [9];
765 SvREFCNT_dec (PL_rs);
766 SvREFCNT_dec (GvSV (irsgv));
767 1036
768 SvREFCNT_dec (PL_diehook);
769 SvREFCNT_dec (PL_warnhook);
770 1037 {
1038 struct coro *current = SvSTATE_current;
1039
1040 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1041
1042 save_perl (aTHX_ current);
1043 load_perl (aTHX_ coro);
1044
1045 coro_unwind_stacks (aTHX);
1046 coro_destruct_stacks (aTHX);
1047
1048 // now save some sv's to be free'd later
1049 svf [0] = GvSV (PL_defgv);
1050 svf [1] = (SV *)GvAV (PL_defgv);
1051 svf [2] = GvSV (PL_errgv);
1052 svf [3] = (SV *)PL_defoutgv;
1053 svf [4] = PL_rs;
1054 svf [5] = GvSV (irsgv);
1055 svf [6] = (SV *)GvHV (PL_hintgv);
1056 svf [7] = PL_diehook;
1057 svf [8] = PL_warnhook;
1058 assert (9 == sizeof (svf) / sizeof (*svf));
1059
1060 load_perl (aTHX_ current);
1061 }
1062
1063 {
1064 unsigned int i;
1065
1066 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1067 SvREFCNT_dec (svf [i]);
1068
771 SvREFCNT_dec (coro->saved_deffh); 1069 SvREFCNT_dec (coro->saved_deffh);
772 SvREFCNT_dec (coro->throw); 1070 SvREFCNT_dec (coro->rouse_cb);
773 1071 SvREFCNT_dec (coro->invoke_cb);
774 coro_destroy_stacks (aTHX); 1072 SvREFCNT_dec (coro->invoke_av);
1073 }
775} 1074}
776 1075
777static void 1076INLINE void
778free_coro_mortal (pTHX) 1077free_coro_mortal (pTHX)
779{ 1078{
780 if (expect_true (coro_mortal)) 1079 if (expect_true (coro_mortal))
781 { 1080 {
782 SvREFCNT_dec (coro_mortal); 1081 SvREFCNT_dec (coro_mortal);
… …
787static int 1086static int
788runops_trace (pTHX) 1087runops_trace (pTHX)
789{ 1088{
790 COP *oldcop = 0; 1089 COP *oldcop = 0;
791 int oldcxix = -2; 1090 int oldcxix = -2;
792 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
793 coro_cctx *cctx = coro->cctx;
794 1091
795 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1092 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
796 { 1093 {
797 PERL_ASYNC_CHECK (); 1094 PERL_ASYNC_CHECK ();
798 1095
799 if (cctx->flags & CC_TRACE_ALL) 1096 if (cctx_current->flags & CC_TRACE_ALL)
800 { 1097 {
801 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1098 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
802 { 1099 {
803 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1100 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
804 SV **bot, **top; 1101 SV **bot, **top;
805 AV *av = newAV (); /* return values */ 1102 AV *av = newAV (); /* return values */
806 SV **cb; 1103 SV **cb;
… …
816 : cx->blk_gimme == G_SCALAR ? bot + 1 1113 : cx->blk_gimme == G_SCALAR ? bot + 1
817 : bot; 1114 : bot;
818 1115
819 av_extend (av, top - bot); 1116 av_extend (av, top - bot);
820 while (bot < top) 1117 while (bot < top)
821 av_push (av, SvREFCNT_inc (*bot++)); 1118 av_push (av, SvREFCNT_inc_NN (*bot++));
822 1119
823 PL_runops = RUNOPS_DEFAULT; 1120 PL_runops = RUNOPS_DEFAULT;
824 ENTER; 1121 ENTER;
825 SAVETMPS; 1122 SAVETMPS;
826 EXTEND (SP, 3); 1123 EXTEND (SP, 3);
827 PUSHMARK (SP); 1124 PUSHMARK (SP);
828 PUSHs (&PL_sv_no); 1125 PUSHs (&PL_sv_no);
829 PUSHs (fullname); 1126 PUSHs (fullname);
830 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1127 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
831 PUTBACK; 1128 PUTBACK;
832 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1129 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
833 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1130 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
834 SPAGAIN; 1131 SPAGAIN;
835 FREETMPS; 1132 FREETMPS;
836 LEAVE; 1133 LEAVE;
837 PL_runops = runops_trace; 1134 PL_runops = runops_trace;
… …
843 1140
844 if (PL_curcop != &PL_compiling) 1141 if (PL_curcop != &PL_compiling)
845 { 1142 {
846 SV **cb; 1143 SV **cb;
847 1144
848 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1145 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
849 { 1146 {
850 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1147 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
851 1148
852 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1149 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
853 { 1150 {
854 runops_proc_t old_runops = PL_runops;
855 dSP; 1151 dSP;
856 GV *gv = CvGV (cx->blk_sub.cv); 1152 GV *gv = CvGV (cx->blk_sub.cv);
857 SV *fullname = sv_2mortal (newSV (0)); 1153 SV *fullname = sv_2mortal (newSV (0));
858 1154
859 if (isGV (gv)) 1155 if (isGV (gv))
… …
864 SAVETMPS; 1160 SAVETMPS;
865 EXTEND (SP, 3); 1161 EXTEND (SP, 3);
866 PUSHMARK (SP); 1162 PUSHMARK (SP);
867 PUSHs (&PL_sv_yes); 1163 PUSHs (&PL_sv_yes);
868 PUSHs (fullname); 1164 PUSHs (fullname);
869 PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1165 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
870 PUTBACK; 1166 PUTBACK;
871 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); 1167 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
872 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1168 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
873 SPAGAIN; 1169 SPAGAIN;
874 FREETMPS; 1170 FREETMPS;
875 LEAVE; 1171 LEAVE;
876 PL_runops = runops_trace; 1172 PL_runops = runops_trace;
877 } 1173 }
878 1174
879 oldcxix = cxstack_ix; 1175 oldcxix = cxstack_ix;
880 } 1176 }
881 1177
882 if (cctx->flags & CC_TRACE_LINE) 1178 if (cctx_current->flags & CC_TRACE_LINE)
883 { 1179 {
884 dSP; 1180 dSP;
885 1181
886 PL_runops = RUNOPS_DEFAULT; 1182 PL_runops = RUNOPS_DEFAULT;
887 ENTER; 1183 ENTER;
… …
890 PL_runops = RUNOPS_DEFAULT; 1186 PL_runops = RUNOPS_DEFAULT;
891 PUSHMARK (SP); 1187 PUSHMARK (SP);
892 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1188 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
893 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1189 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
894 PUTBACK; 1190 PUTBACK;
895 cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); 1191 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
896 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1192 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
897 SPAGAIN; 1193 SPAGAIN;
898 FREETMPS; 1194 FREETMPS;
899 LEAVE; 1195 LEAVE;
900 PL_runops = runops_trace; 1196 PL_runops = runops_trace;
… …
906 1202
907 TAINT_NOT; 1203 TAINT_NOT;
908 return 0; 1204 return 0;
909} 1205}
910 1206
911/* inject a fake call to Coro::State::_cctx_init into the execution */ 1207static struct CoroSLF cctx_ssl_frame;
912/* _cctx_init should be careful, as it could be called at almost any time */ 1208
913/* during execution of a perl program */ 1209static void
1210slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1211{
1212 ta->prev = 0;
1213}
1214
1215static int
1216slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1217{
1218 *frame = cctx_ssl_frame;
1219
1220 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1221}
1222
1223/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
914static void NOINLINE 1224static void NOINLINE
915cctx_prepare (pTHX_ coro_cctx *cctx) 1225cctx_prepare (pTHX)
916{ 1226{
917 dSP;
918 LOGOP myop;
919
920 PL_top_env = &PL_start_env; 1227 PL_top_env = &PL_start_env;
921 1228
922 if (cctx->flags & CC_TRACE) 1229 if (cctx_current->flags & CC_TRACE)
923 PL_runops = runops_trace; 1230 PL_runops = runops_trace;
924 1231
925 Zero (&myop, 1, LOGOP); 1232 /* we already must be executing an SLF op, there is no other valid way
926 myop.op_next = PL_op; 1233 * that can lead to creation of a new cctx */
927 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1234 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1235 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
928 1236
929 PUSHMARK (SP); 1237 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
930 EXTEND (SP, 2); 1238 cctx_ssl_frame = slf_frame;
931 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1239
932 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1240 slf_frame.prepare = slf_prepare_set_stacklevel;
933 PUTBACK; 1241 slf_frame.check = slf_check_set_stacklevel;
934 PL_op = (OP *)&myop; 1242}
935 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1243
936 SPAGAIN; 1244/* the tail of transfer: execute stuff we can only do after a transfer */
1245INLINE void
1246transfer_tail (pTHX)
1247{
1248 free_coro_mortal (aTHX);
937} 1249}
938 1250
939/* 1251/*
940 * this is a _very_ stripped down perl interpreter ;) 1252 * this is a _very_ stripped down perl interpreter ;)
941 */ 1253 */
942static void 1254static void
943cctx_run (void *arg) 1255cctx_run (void *arg)
944{ 1256{
1257#ifdef USE_ITHREADS
1258# if CORO_PTHREAD
1259 PERL_SET_CONTEXT (coro_thx);
1260# endif
1261#endif
1262 {
945 dTHX; 1263 dTHX;
946 1264
947 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1265 /* normally we would need to skip the entersub here */
948 UNLOCK; 1266 /* not doing so will re-execute it, which is exactly what we want */
949
950 /* we now skip the entersub that lead to transfer() */
951 PL_op = PL_op->op_next; 1267 /* PL_nop = PL_nop->op_next */
952 1268
953 /* inject a fake subroutine call to cctx_init */ 1269 /* inject a fake subroutine call to cctx_init */
954 cctx_prepare (aTHX_ (coro_cctx *)arg); 1270 cctx_prepare (aTHX);
955 1271
1272 /* cctx_run is the alternative tail of transfer() */
1273 transfer_tail (aTHX);
1274
956 /* somebody or something will hit me for both perl_run and PL_restartop */ 1275 /* somebody or something will hit me for both perl_run and PL_restartop */
957 PL_restartop = PL_op; 1276 PL_restartop = PL_op;
958 perl_run (PL_curinterp); 1277 perl_run (PL_curinterp);
959
960 /* 1278 /*
1279 * Unfortunately, there is no way to get at the return values of the
1280 * coro body here, as perl_run destroys these
1281 */
1282
1283 /*
961 * If perl-run returns we assume exit() was being called or the coro 1284 * If perl-run returns we assume exit() was being called or the coro
962 * fell off the end, which seems to be the only valid (non-bug) 1285 * fell off the end, which seems to be the only valid (non-bug)
963 * reason for perl_run to return. We try to exit by jumping to the 1286 * reason for perl_run to return. We try to exit by jumping to the
964 * bootstrap-time "top" top_env, as we cannot restore the "main" 1287 * bootstrap-time "top" top_env, as we cannot restore the "main"
965 * coroutine as Coro has no such concept 1288 * coroutine as Coro has no such concept.
1289 * This actually isn't valid with the pthread backend, but OSes requiring
1290 * that backend are too broken to do it in a standards-compliant way.
966 */ 1291 */
967 PL_top_env = main_top_env; 1292 PL_top_env = main_top_env;
968 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1293 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1294 }
969} 1295}
970 1296
971static coro_cctx * 1297static coro_cctx *
972cctx_new () 1298cctx_new ()
973{ 1299{
974 coro_cctx *cctx; 1300 coro_cctx *cctx;
1301
1302 ++cctx_count;
1303 New (0, cctx, 1, coro_cctx);
1304
1305 cctx->gen = cctx_gen;
1306 cctx->flags = 0;
1307 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1308
1309 return cctx;
1310}
1311
1312/* create a new cctx only suitable as source */
1313static coro_cctx *
1314cctx_new_empty ()
1315{
1316 coro_cctx *cctx = cctx_new ();
1317
1318 cctx->sptr = 0;
1319 coro_create (&cctx->cctx, 0, 0, 0, 0);
1320
1321 return cctx;
1322}
1323
1324/* create a new cctx suitable as destination/running a perl interpreter */
1325static coro_cctx *
1326cctx_new_run ()
1327{
1328 coro_cctx *cctx = cctx_new ();
975 void *stack_start; 1329 void *stack_start;
976 size_t stack_size; 1330 size_t stack_size;
977 1331
978 ++cctx_count;
979
980 Newz (0, cctx, 1, coro_cctx);
981
982#if HAVE_MMAP 1332#if HAVE_MMAP
983 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1333 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
984 /* mmap supposedly does allocate-on-write for us */ 1334 /* mmap supposedly does allocate-on-write for us */
985 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1335 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
986 1336
987 if (cctx->sptr != (void *)-1) 1337 if (cctx->sptr != (void *)-1)
988 { 1338 {
989# if CORO_STACKGUARD 1339 #if CORO_STACKGUARD
990 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1340 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
991# endif 1341 #endif
992 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1342 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
993 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1343 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
994 cctx->flags |= CC_MAPPED; 1344 cctx->flags |= CC_MAPPED;
995 } 1345 }
996 else 1346 else
997#endif 1347#endif
998 { 1348 {
999 cctx->ssize = coro_stacksize * (long)sizeof (long); 1349 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1000 New (0, cctx->sptr, coro_stacksize, long); 1350 New (0, cctx->sptr, cctx_stacksize, long);
1001 1351
1002 if (!cctx->sptr) 1352 if (!cctx->sptr)
1003 { 1353 {
1004 perror ("FATAL: unable to allocate stack for coroutine"); 1354 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1005 _exit (EXIT_FAILURE); 1355 _exit (EXIT_FAILURE);
1006 } 1356 }
1007 1357
1008 stack_start = cctx->sptr; 1358 stack_start = cctx->sptr;
1009 stack_size = cctx->ssize; 1359 stack_size = cctx->ssize;
1010 } 1360 }
1011 1361
1012 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1362 #if CORO_USE_VALGRIND
1363 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1364 #endif
1365
1013 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1366 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1014 1367
1015 return cctx; 1368 return cctx;
1016} 1369}
1017 1370
… …
1019cctx_destroy (coro_cctx *cctx) 1372cctx_destroy (coro_cctx *cctx)
1020{ 1373{
1021 if (!cctx) 1374 if (!cctx)
1022 return; 1375 return;
1023 1376
1377 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1378
1024 --cctx_count; 1379 --cctx_count;
1380 coro_destroy (&cctx->cctx);
1025 1381
1382 /* coro_transfer creates new, empty cctx's */
1383 if (cctx->sptr)
1384 {
1026#if CORO_USE_VALGRIND 1385 #if CORO_USE_VALGRIND
1027 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1386 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1387 #endif
1388
1389#if HAVE_MMAP
1390 if (cctx->flags & CC_MAPPED)
1391 munmap (cctx->sptr, cctx->ssize);
1392 else
1028#endif 1393#endif
1029
1030#if HAVE_MMAP
1031 if (cctx->flags & CC_MAPPED)
1032 munmap (cctx->sptr, cctx->ssize);
1033 else
1034#endif
1035 Safefree (cctx->sptr); 1394 Safefree (cctx->sptr);
1395 }
1036 1396
1037 Safefree (cctx); 1397 Safefree (cctx);
1038} 1398}
1039 1399
1040/* wether this cctx should be destructed */ 1400/* wether this cctx should be destructed */
1041#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1401#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1042 1402
1043static coro_cctx * 1403static coro_cctx *
1044cctx_get (pTHX_ int gimme) 1404cctx_get (pTHX)
1045{ 1405{
1046 while (expect_true (cctx_first[gimme])) 1406 while (expect_true (cctx_first))
1047 { 1407 {
1048 coro_cctx *cctx = cctx_first[gimme]; 1408 coro_cctx *cctx = cctx_first;
1049 cctx_first[gimme] = cctx->next; 1409 cctx_first = cctx->next;
1050 --cctx_idle[gimme]; 1410 --cctx_idle;
1051 1411
1052 if (expect_true (!CCTX_EXPIRED (cctx))) 1412 if (expect_true (!CCTX_EXPIRED (cctx)))
1053 return cctx; 1413 return cctx;
1054 1414
1055 cctx_destroy (cctx); 1415 cctx_destroy (cctx);
1056 } 1416 }
1057 1417
1058 assert (!gimme);
1059 return cctx_new (); 1418 return cctx_new_run ();
1060} 1419}
1061 1420
1062static void 1421static void
1063cctx_put (coro_cctx *cctx, int gimme) 1422cctx_put (coro_cctx *cctx)
1064{ 1423{
1424 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1425
1065 /* free another cctx if overlimit */ 1426 /* free another cctx if overlimit */
1066 if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX)) 1427 if (expect_false (cctx_idle >= cctx_max_idle))
1067 { 1428 {
1068 coro_cctx *first = cctx_first[gimme]; 1429 coro_cctx *first = cctx_first;
1069 cctx_first[gimme] = first->next; 1430 cctx_first = first->next;
1070 --cctx_idle[gimme]; 1431 --cctx_idle;
1071 1432
1072 cctx_destroy (first); 1433 cctx_destroy (first);
1073 } 1434 }
1074 1435
1075 ++cctx_idle[gimme]; 1436 ++cctx_idle;
1076 cctx->next = cctx_first[gimme]; 1437 cctx->next = cctx_first;
1077 cctx_first[gimme] = cctx; 1438 cctx_first = cctx;
1078} 1439}
1079 1440
1080/** coroutine switching *****************************************************/ 1441/** coroutine switching *****************************************************/
1081 1442
1082static void 1443static void
1083transfer_check (pTHX_ struct coro *prev, struct coro *next) 1444transfer_check (pTHX_ struct coro *prev, struct coro *next)
1084{ 1445{
1446 /* TODO: throwing up here is considered harmful */
1447
1085 if (expect_true (prev != next)) 1448 if (expect_true (prev != next))
1086 { 1449 {
1087 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1450 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1088 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1451 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1089 1452
1090 if (expect_false (next->flags & CF_RUNNING))
1091 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1092
1093 if (expect_false (next->flags & CF_DESTROYED)) 1453 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1094 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1454 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1095 1455
1096 if (
1097#if PERL_VERSION_ATLEAST (5,9,0) 1456#if !PERL_VERSION_ATLEAST (5,10,0)
1098 expect_false (PL_parser)
1099#else
1100 expect_false (PL_lex_state != LEX_NOTPARSING) 1457 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1458 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1101#endif 1459#endif
1102 )
1103 croak ("Coro::State::transfer called while parsing, but this is not supported");
1104 } 1460 }
1105} 1461}
1106 1462
1107/* always use the TRANSFER macro */ 1463/* always use the TRANSFER macro */
1108static void NOINLINE 1464static void NOINLINE /* noinline so we have a fixed stackframe */
1109transfer (pTHX_ struct coro *prev, struct coro *next) 1465transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1110{ 1466{
1111 dSTACKLEVEL; 1467 dSTACKLEVEL;
1112 1468
1113 /* sometimes transfer is only called to set idle_sp */ 1469 /* sometimes transfer is only called to set idle_sp */
1114 if (expect_false (!next)) 1470 if (expect_false (!prev))
1115 { 1471 {
1116 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1472 cctx_current->idle_sp = STACKLEVEL;
1117 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1473 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1118 } 1474 }
1119 else if (expect_true (prev != next)) 1475 else if (expect_true (prev != next))
1120 { 1476 {
1121 coro_cctx *prev__cctx; 1477 coro_cctx *cctx_prev;
1122 1478
1123 if (expect_false (prev->flags & CF_NEW)) 1479 if (expect_false (prev->flags & CF_NEW))
1124 { 1480 {
1125 /* create a new empty context */ 1481 /* create a new empty/source context */
1126 Newz (0, prev->cctx, 1, coro_cctx);
1127 prev->flags &= ~CF_NEW; 1482 prev->flags &= ~CF_NEW;
1128 prev->flags |= CF_RUNNING; 1483 prev->flags |= CF_RUNNING;
1129 } 1484 }
1130 1485
1131 prev->flags &= ~CF_RUNNING; 1486 prev->flags &= ~CF_RUNNING;
1132 next->flags |= CF_RUNNING; 1487 next->flags |= CF_RUNNING;
1133 1488
1134 LOCK; 1489 /* first get rid of the old state */
1490 save_perl (aTHX_ prev);
1135 1491
1136 if (expect_false (next->flags & CF_NEW)) 1492 if (expect_false (next->flags & CF_NEW))
1137 { 1493 {
1138 /* need to start coroutine */ 1494 /* need to start coroutine */
1139 next->flags &= ~CF_NEW; 1495 next->flags &= ~CF_NEW;
1140 /* first get rid of the old state */
1141 save_perl (aTHX_ prev);
1142 /* setup coroutine call */ 1496 /* setup coroutine call */
1143 coro_setup (aTHX_ next); 1497 coro_setup (aTHX_ next);
1144 } 1498 }
1145 else 1499 else
1500 load_perl (aTHX_ next);
1501
1502 /* possibly untie and reuse the cctx */
1503 if (expect_true (
1504 cctx_current->idle_sp == STACKLEVEL
1505 && !(cctx_current->flags & CC_TRACE)
1506 && !force_cctx
1507 ))
1146 { 1508 {
1147 /* coroutine already started */ 1509 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1148 save_perl (aTHX_ prev); 1510 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1149 load_perl (aTHX_ next); 1511
1512 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1513 /* without this the next cctx_get might destroy the running cctx while still in use */
1514 if (expect_false (CCTX_EXPIRED (cctx_current)))
1515 if (expect_true (!next->cctx))
1516 next->cctx = cctx_get (aTHX);
1517
1518 cctx_put (cctx_current);
1150 } 1519 }
1520 else
1521 prev->cctx = cctx_current;
1151 1522
1152 prev__cctx = prev->cctx; 1523 ++next->usecount;
1153 1524
1154 /* possibly "free" the cctx */ 1525 cctx_prev = cctx_current;
1155 if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) 1526 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1527
1528 next->cctx = 0;
1529
1530 if (expect_false (cctx_prev != cctx_current))
1156 { 1531 {
1157 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1532 cctx_prev->top_env = PL_top_env;
1158 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1533 PL_top_env = cctx_current->top_env;
1159 1534 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1160 prev->cctx = 0;
1161
1162 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1163 /* without this the next cctx_get might destroy the prev__cctx while still in use */
1164 if (expect_false (CCTX_EXPIRED (prev__cctx)))
1165 if (!next->cctx)
1166 next->cctx = cctx_get (aTHX_ next->gimme);
1167
1168 cctx_put (prev__cctx, prev->gimme);
1169 } 1535 }
1170 1536
1171 ++next->usecount; 1537 transfer_tail (aTHX);
1172
1173 if (expect_true (!next->cctx))
1174 next->cctx = cctx_get (aTHX_ next->gimme);
1175
1176 if (expect_false (prev__cctx != next->cctx))
1177 {
1178 prev__cctx->top_env = PL_top_env;
1179 PL_top_env = next->cctx->top_env;
1180 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1181 }
1182
1183 free_coro_mortal (aTHX);
1184 UNLOCK;
1185
1186 if (expect_false (prev->throw || next->throw))
1187 {
1188 struct coro *coro = SvSTATE (coro_current);
1189
1190 if (coro->throw)
1191 {
1192 SV *exception = coro->throw;
1193 coro->throw = 0;
1194 sv_setsv (ERRSV, exception);
1195 croak (0);
1196 }
1197 }
1198 } 1538 }
1199} 1539}
1200 1540
1201struct transfer_args
1202{
1203 struct coro *prev, *next;
1204};
1205
1206#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) 1541#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1207#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1542#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1208 1543
1209/** high level stuff ********************************************************/ 1544/** high level stuff ********************************************************/
1210 1545
1211static int 1546static int
1212coro_state_destroy (pTHX_ struct coro *coro) 1547coro_state_destroy (pTHX_ struct coro *coro)
1213{ 1548{
1214 if (coro->flags & CF_DESTROYED) 1549 if (coro->flags & CF_DESTROYED)
1215 return 0; 1550 return 0;
1551
1552 if (coro->on_destroy && !PL_dirty)
1553 coro->on_destroy (aTHX_ coro);
1216 1554
1217 coro->flags |= CF_DESTROYED; 1555 coro->flags |= CF_DESTROYED;
1218 1556
1219 if (coro->flags & CF_READY) 1557 if (coro->flags & CF_READY)
1220 { 1558 {
1221 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1559 /* reduce nready, as destroying a ready coro effectively unreadies it */
1222 /* alternative: look through all ready queues and remove the coro */ 1560 /* alternative: look through all ready queues and remove the coro */
1223 LOCK;
1224 --coro_nready; 1561 --coro_nready;
1225 UNLOCK;
1226 } 1562 }
1227 else 1563 else
1228 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1564 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1229 1565
1230 if (coro->mainstack && coro->mainstack != main_mainstack) 1566 if (coro->mainstack
1231 { 1567 && coro->mainstack != main_mainstack
1232 struct coro temp; 1568 && coro->slot
1233 1569 && !PL_dirty)
1234 if (coro->flags & CF_RUNNING)
1235 croak ("FATAL: tried to destroy currently running coroutine");
1236
1237 save_perl (aTHX_ &temp);
1238 load_perl (aTHX_ coro);
1239
1240 coro_destroy (aTHX_ coro); 1570 coro_destruct_perl (aTHX_ coro);
1241
1242 load_perl (aTHX_ &temp);
1243
1244 coro->slot = 0;
1245 }
1246 1571
1247 cctx_destroy (coro->cctx); 1572 cctx_destroy (coro->cctx);
1573 SvREFCNT_dec (coro->startcv);
1248 SvREFCNT_dec (coro->args); 1574 SvREFCNT_dec (coro->args);
1575 SvREFCNT_dec (CORO_THROW);
1249 1576
1250 if (coro->next) coro->next->prev = coro->prev; 1577 if (coro->next) coro->next->prev = coro->prev;
1251 if (coro->prev) coro->prev->next = coro->next; 1578 if (coro->prev) coro->prev->next = coro->next;
1252 if (coro == coro_first) coro_first = coro->next; 1579 if (coro == coro_first) coro_first = coro->next;
1253 1580
… …
1291# define MGf_DUP 0 1618# define MGf_DUP 0
1292#endif 1619#endif
1293}; 1620};
1294 1621
1295static void 1622static void
1296prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1623prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1297{ 1624{
1298 ta->prev = SvSTATE (prev_sv); 1625 ta->prev = SvSTATE (prev_sv);
1299 ta->next = SvSTATE (next_sv); 1626 ta->next = SvSTATE (next_sv);
1300 TRANSFER_CHECK (*ta); 1627 TRANSFER_CHECK (*ta);
1301} 1628}
1302 1629
1303static void 1630static void
1304api_transfer (SV *prev_sv, SV *next_sv) 1631api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1632{
1633 struct coro_transfer_args ta;
1634
1635 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1636 TRANSFER (ta, 1);
1637}
1638
1639/** Coro ********************************************************************/
1640
1641INLINE void
1642coro_enq (pTHX_ struct coro *coro)
1643{
1644 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1645
1646 SvREFCNT_inc_NN (coro->hv);
1647
1648 coro->next_ready = 0;
1649 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1650 ready [1] = coro;
1651}
1652
1653INLINE struct coro *
1654coro_deq (pTHX)
1655{
1656 int prio;
1657
1658 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1659 {
1660 struct coro **ready = coro_ready [prio];
1661
1662 if (ready [0])
1663 {
1664 struct coro *coro = ready [0];
1665 ready [0] = coro->next_ready;
1666 return coro;
1667 }
1668 }
1669
1670 return 0;
1671}
1672
1673static void
1674invoke_sv_ready_hook_helper (void)
1305{ 1675{
1306 dTHX; 1676 dTHX;
1307 struct transfer_args ta; 1677 dSP;
1308 1678
1309 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1679 ENTER;
1310 TRANSFER (ta); 1680 SAVETMPS;
1311}
1312 1681
1313/** Coro ********************************************************************/ 1682 PUSHMARK (SP);
1683 PUTBACK;
1684 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1314 1685
1315static void 1686 FREETMPS;
1316coro_enq (pTHX_ SV *coro_sv) 1687 LEAVE;
1317{
1318 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1319}
1320
1321static SV *
1322coro_deq (pTHX_ int min_prio)
1323{
1324 int prio = PRIO_MAX - PRIO_MIN;
1325
1326 min_prio -= PRIO_MIN;
1327 if (min_prio < 0)
1328 min_prio = 0;
1329
1330 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
1331 if (AvFILLp (coro_ready [prio]) >= 0)
1332 return av_shift (coro_ready [prio]);
1333
1334 return 0;
1335} 1688}
1336 1689
1337static int 1690static int
1338api_ready (SV *coro_sv) 1691api_ready (pTHX_ SV *coro_sv)
1339{ 1692{
1340 dTHX;
1341 struct coro *coro;
1342
1343 if (SvROK (coro_sv))
1344 coro_sv = SvRV (coro_sv);
1345
1346 coro = SvSTATE (coro_sv); 1693 struct coro *coro = SvSTATE (coro_sv);
1347 1694
1348 if (coro->flags & CF_READY) 1695 if (coro->flags & CF_READY)
1349 return 0; 1696 return 0;
1350 1697
1351 coro->flags |= CF_READY; 1698 coro->flags |= CF_READY;
1352 1699
1353 LOCK; 1700 coro_enq (aTHX_ coro);
1354 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1701
1355 ++coro_nready; 1702 if (!coro_nready++)
1356 UNLOCK; 1703 if (coroapi.readyhook)
1704 coroapi.readyhook ();
1357 1705
1358 return 1; 1706 return 1;
1359} 1707}
1360 1708
1361static int 1709static int
1362api_is_ready (SV *coro_sv) 1710api_is_ready (pTHX_ SV *coro_sv)
1363{ 1711{
1364 dTHX;
1365 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1712 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1366} 1713}
1367 1714
1368static void 1715/* expects to own a reference to next->hv */
1716INLINE void
1369prepare_schedule (pTHX_ struct transfer_args *ta) 1717prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1370{ 1718{
1371 SV *prev_sv, *next_sv;
1372
1373 for (;;)
1374 {
1375 LOCK;
1376 next_sv = coro_deq (aTHX_ PRIO_MIN);
1377
1378 /* nothing to schedule: call the idle handler */
1379 if (expect_false (!next_sv))
1380 {
1381 dSP;
1382 UNLOCK;
1383
1384 ENTER;
1385 SAVETMPS;
1386
1387 PUSHMARK (SP);
1388 PUTBACK;
1389 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1390
1391 FREETMPS;
1392 LEAVE;
1393 continue;
1394 }
1395
1396 ta->next = SvSTATE (next_sv);
1397
1398 /* cannot transfer to destroyed coros, skip and look for next */
1399 if (expect_false (ta->next->flags & CF_DESTROYED))
1400 {
1401 UNLOCK;
1402 SvREFCNT_dec (next_sv);
1403 /* coro_nready is already taken care of by destroy */
1404 continue;
1405 }
1406
1407 --coro_nready;
1408 UNLOCK;
1409 break;
1410 }
1411
1412 /* free this only after the transfer */
1413 prev_sv = SvRV (coro_current); 1719 SV *prev_sv = SvRV (coro_current);
1720
1414 ta->prev = SvSTATE (prev_sv); 1721 ta->prev = SvSTATE_hv (prev_sv);
1722 ta->next = next;
1723
1415 TRANSFER_CHECK (*ta); 1724 TRANSFER_CHECK (*ta);
1416 assert (ta->next->flags & CF_READY); 1725
1417 ta->next->flags &= ~CF_READY;
1418 SvRV_set (coro_current, next_sv); 1726 SvRV_set (coro_current, (SV *)next->hv);
1419 1727
1420 LOCK;
1421 free_coro_mortal (aTHX); 1728 free_coro_mortal (aTHX);
1422 coro_mortal = prev_sv; 1729 coro_mortal = prev_sv;
1423 UNLOCK;
1424} 1730}
1425 1731
1426static void 1732static void
1733prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1734{
1735 for (;;)
1736 {
1737 struct coro *next = coro_deq (aTHX);
1738
1739 if (expect_true (next))
1740 {
1741 /* cannot transfer to destroyed coros, skip and look for next */
1742 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1743 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1744 else
1745 {
1746 next->flags &= ~CF_READY;
1747 --coro_nready;
1748
1749 prepare_schedule_to (aTHX_ ta, next);
1750 break;
1751 }
1752 }
1753 else
1754 {
1755 /* nothing to schedule: call the idle handler */
1756 if (SvROK (sv_idle)
1757 && SvOBJECT (SvRV (sv_idle)))
1758 {
1759 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1760 api_ready (aTHX_ SvRV (sv_idle));
1761 --coro_nready;
1762 }
1763 else
1764 {
1765 dSP;
1766
1767 ENTER;
1768 SAVETMPS;
1769
1770 PUSHMARK (SP);
1771 PUTBACK;
1772 call_sv (sv_idle, G_VOID | G_DISCARD);
1773
1774 FREETMPS;
1775 LEAVE;
1776 }
1777 }
1778 }
1779}
1780
1781INLINE void
1427prepare_cede (pTHX_ struct transfer_args *ta) 1782prepare_cede (pTHX_ struct coro_transfer_args *ta)
1428{ 1783{
1429 api_ready (coro_current); 1784 api_ready (aTHX_ coro_current);
1430 prepare_schedule (aTHX_ ta); 1785 prepare_schedule (aTHX_ ta);
1431} 1786}
1432 1787
1788INLINE void
1789prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1790{
1791 SV *prev = SvRV (coro_current);
1792
1793 if (coro_nready)
1794 {
1795 prepare_schedule (aTHX_ ta);
1796 api_ready (aTHX_ prev);
1797 }
1798 else
1799 prepare_nop (aTHX_ ta);
1800}
1801
1802static void
1803api_schedule (pTHX)
1804{
1805 struct coro_transfer_args ta;
1806
1807 prepare_schedule (aTHX_ &ta);
1808 TRANSFER (ta, 1);
1809}
1810
1811static void
1812api_schedule_to (pTHX_ SV *coro_sv)
1813{
1814 struct coro_transfer_args ta;
1815 struct coro *next = SvSTATE (coro_sv);
1816
1817 SvREFCNT_inc_NN (coro_sv);
1818 prepare_schedule_to (aTHX_ &ta, next);
1819}
1820
1433static int 1821static int
1434prepare_cede_notself (pTHX_ struct transfer_args *ta) 1822api_cede (pTHX)
1435{ 1823{
1436 if (coro_nready) 1824 struct coro_transfer_args ta;
1437 { 1825
1438 SV *prev = SvRV (coro_current);
1439 prepare_schedule (aTHX_ ta); 1826 prepare_cede (aTHX_ &ta);
1440 api_ready (prev); 1827
1828 if (expect_true (ta.prev != ta.next))
1829 {
1830 TRANSFER (ta, 1);
1441 return 1; 1831 return 1;
1442 } 1832 }
1443 else 1833 else
1444 return 0; 1834 return 0;
1445} 1835}
1446 1836
1447static void
1448api_schedule (void)
1449{
1450 dTHX;
1451 struct transfer_args ta;
1452
1453 prepare_schedule (aTHX_ &ta);
1454 TRANSFER (ta);
1455}
1456
1457static int 1837static int
1458api_cede (void) 1838api_cede_notself (pTHX)
1459{ 1839{
1460 dTHX; 1840 if (coro_nready)
1841 {
1461 struct transfer_args ta; 1842 struct coro_transfer_args ta;
1462 1843
1463 prepare_cede (aTHX_ &ta); 1844 prepare_cede_notself (aTHX_ &ta);
1464
1465 if (expect_true (ta.prev != ta.next))
1466 {
1467 TRANSFER (ta); 1845 TRANSFER (ta, 1);
1468 return 1; 1846 return 1;
1469 } 1847 }
1470 else 1848 else
1471 return 0; 1849 return 0;
1472} 1850}
1473 1851
1474static int 1852static void
1475api_cede_notself (void)
1476{
1477 dTHX;
1478 struct transfer_args ta;
1479
1480 if (prepare_cede_notself (aTHX_ &ta))
1481 {
1482 TRANSFER (ta);
1483 return 1;
1484 }
1485 else
1486 return 0;
1487}
1488
1489static void
1490api_trace (SV *coro_sv, int flags) 1853api_trace (pTHX_ SV *coro_sv, int flags)
1491{ 1854{
1492 dTHX;
1493 struct coro *coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1494 1856
1857 if (coro->flags & CF_RUNNING)
1858 croak ("cannot enable tracing on a running coroutine, caught");
1859
1495 if (flags & CC_TRACE) 1860 if (flags & CC_TRACE)
1496 { 1861 {
1497 if (!coro->cctx) 1862 if (!coro->cctx)
1498 coro->cctx = cctx_new (); 1863 coro->cctx = cctx_new_run ();
1499 else if (!(coro->cctx->flags & CC_TRACE)) 1864 else if (!(coro->cctx->flags & CC_TRACE))
1500 croak ("cannot enable tracing on coroutine with custom stack"); 1865 croak ("cannot enable tracing on coroutine with custom stack, caught");
1501 1866
1502 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1867 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1503 } 1868 }
1504 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1869 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1505 { 1870 {
… …
1510 else 1875 else
1511 coro->slot->runops = RUNOPS_DEFAULT; 1876 coro->slot->runops = RUNOPS_DEFAULT;
1512 } 1877 }
1513} 1878}
1514 1879
1880static void
1881coro_call_on_destroy (pTHX_ struct coro *coro)
1882{
1883 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1884 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1885
1886 if (on_destroyp)
1887 {
1888 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1889
1890 while (AvFILLp (on_destroy) >= 0)
1891 {
1892 dSP; /* don't disturb outer sp */
1893 SV *cb = av_pop (on_destroy);
1894
1895 PUSHMARK (SP);
1896
1897 if (statusp)
1898 {
1899 int i;
1900 AV *status = (AV *)SvRV (*statusp);
1901 EXTEND (SP, AvFILLp (status) + 1);
1902
1903 for (i = 0; i <= AvFILLp (status); ++i)
1904 PUSHs (AvARRAY (status)[i]);
1905 }
1906
1907 PUTBACK;
1908 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1909 }
1910 }
1911}
1912
1913static void
1914slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{
1916 int i;
1917 HV *hv = (HV *)SvRV (coro_current);
1918 AV *av = newAV ();
1919
1920 av_extend (av, items - 1);
1921 for (i = 0; i < items; ++i)
1922 av_push (av, SvREFCNT_inc_NN (arg [i]));
1923
1924 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1925
1926 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1927 api_ready (aTHX_ sv_manager);
1928
1929 frame->prepare = prepare_schedule;
1930 frame->check = slf_check_repeat;
1931
1932 /* as a minor optimisation, we could unwind all stacks here */
1933 /* but that puts extra pressure on pp_slf, and is not worth much */
1934 /*coro_unwind_stacks (aTHX);*/
1935}
1936
1937/*****************************************************************************/
1938/* async pool handler */
1939
1940static int
1941slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1942{
1943 HV *hv = (HV *)SvRV (coro_current);
1944 struct coro *coro = (struct coro *)frame->data;
1945
1946 if (!coro->invoke_cb)
1947 return 1; /* loop till we have invoke */
1948 else
1949 {
1950 hv_store (hv, "desc", sizeof ("desc") - 1,
1951 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1952
1953 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1954
1955 {
1956 dSP;
1957 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1958 PUTBACK;
1959 }
1960
1961 SvREFCNT_dec (GvAV (PL_defgv));
1962 GvAV (PL_defgv) = coro->invoke_av;
1963 coro->invoke_av = 0;
1964
1965 return 0;
1966 }
1967}
1968
1969static void
1970slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1971{
1972 HV *hv = (HV *)SvRV (coro_current);
1973 struct coro *coro = SvSTATE_hv ((SV *)hv);
1974
1975 if (expect_true (coro->saved_deffh))
1976 {
1977 /* subsequent iteration */
1978 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1979 coro->saved_deffh = 0;
1980
1981 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1982 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1983 {
1984 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1985 coro->invoke_av = newAV ();
1986
1987 frame->prepare = prepare_nop;
1988 }
1989 else
1990 {
1991 av_clear (GvAV (PL_defgv));
1992 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1993
1994 coro->prio = 0;
1995
1996 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1997 api_trace (aTHX_ coro_current, 0);
1998
1999 frame->prepare = prepare_schedule;
2000 av_push (av_async_pool, SvREFCNT_inc (hv));
2001 }
2002 }
2003 else
2004 {
2005 /* first iteration, simply fall through */
2006 frame->prepare = prepare_nop;
2007 }
2008
2009 frame->check = slf_check_pool_handler;
2010 frame->data = (void *)coro;
2011}
2012
2013/*****************************************************************************/
2014/* rouse callback */
2015
2016#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2017
2018static void
2019coro_rouse_callback (pTHX_ CV *cv)
2020{
2021 dXSARGS;
2022 SV *data = (SV *)S_GENSUB_ARG;
2023
2024 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2025 {
2026 /* first call, set args */
2027 SV *coro = SvRV (data);
2028 AV *av = newAV ();
2029
2030 SvRV_set (data, (SV *)av);
2031
2032 /* better take a full copy of the arguments */
2033 while (items--)
2034 av_store (av, items, newSVsv (ST (items)));
2035
2036 api_ready (aTHX_ coro);
2037 SvREFCNT_dec (coro);
2038 }
2039
2040 XSRETURN_EMPTY;
2041}
2042
2043static int
2044slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2045{
2046 SV *data = (SV *)frame->data;
2047
2048 if (CORO_THROW)
2049 return 0;
2050
2051 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2052 return 1;
2053
2054 /* now push all results on the stack */
2055 {
2056 dSP;
2057 AV *av = (AV *)SvRV (data);
2058 int i;
2059
2060 EXTEND (SP, AvFILLp (av) + 1);
2061 for (i = 0; i <= AvFILLp (av); ++i)
2062 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2063
2064 /* we have stolen the elements, so set length to zero and free */
2065 AvFILLp (av) = -1;
2066 av_undef (av);
2067
2068 PUTBACK;
2069 }
2070
2071 return 0;
2072}
2073
2074static void
2075slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2076{
2077 SV *cb;
2078
2079 if (items)
2080 cb = arg [0];
2081 else
2082 {
2083 struct coro *coro = SvSTATE_current;
2084
2085 if (!coro->rouse_cb)
2086 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2087
2088 cb = sv_2mortal (coro->rouse_cb);
2089 coro->rouse_cb = 0;
2090 }
2091
2092 if (!SvROK (cb)
2093 || SvTYPE (SvRV (cb)) != SVt_PVCV
2094 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2095 croak ("Coro::rouse_wait called with illegal callback argument,");
2096
2097 {
2098 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2099 SV *data = (SV *)S_GENSUB_ARG;
2100
2101 frame->data = (void *)data;
2102 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2103 frame->check = slf_check_rouse_wait;
2104 }
2105}
2106
2107static SV *
2108coro_new_rouse_cb (pTHX)
2109{
2110 HV *hv = (HV *)SvRV (coro_current);
2111 struct coro *coro = SvSTATE_hv (hv);
2112 SV *data = newRV_inc ((SV *)hv);
2113 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2114
2115 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2116 SvREFCNT_dec (data); /* magicext increases the refcount */
2117
2118 SvREFCNT_dec (coro->rouse_cb);
2119 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2120
2121 return cb;
2122}
2123
2124/*****************************************************************************/
2125/* schedule-like-function opcode (SLF) */
2126
2127static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2128static const CV *slf_cv;
2129static SV **slf_argv;
2130static int slf_argc, slf_arga; /* count, allocated */
2131static I32 slf_ax; /* top of stack, for restore */
2132
2133/* this restores the stack in the case we patched the entersub, to */
2134/* recreate the stack frame as perl will on following calls */
2135/* since entersub cleared the stack */
2136static OP *
2137pp_restore (pTHX)
2138{
2139 int i;
2140 SV **SP = PL_stack_base + slf_ax;
2141
2142 PUSHMARK (SP);
2143
2144 EXTEND (SP, slf_argc + 1);
2145
2146 for (i = 0; i < slf_argc; ++i)
2147 PUSHs (sv_2mortal (slf_argv [i]));
2148
2149 PUSHs ((SV *)CvGV (slf_cv));
2150
2151 RETURNOP (slf_restore.op_first);
2152}
2153
2154static void
2155slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2156{
2157 SV **arg = (SV **)slf_frame.data;
2158
2159 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2160}
2161
2162static void
2163slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2164{
2165 if (items != 2)
2166 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2167
2168 frame->prepare = slf_prepare_transfer;
2169 frame->check = slf_check_nop;
2170 frame->data = (void *)arg; /* let's hope it will stay valid */
2171}
2172
2173static void
2174slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2175{
2176 frame->prepare = prepare_schedule;
2177 frame->check = slf_check_nop;
2178}
2179
2180static void
2181slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2182{
2183 struct coro *next = (struct coro *)slf_frame.data;
2184
2185 SvREFCNT_inc_NN (next->hv);
2186 prepare_schedule_to (aTHX_ ta, next);
2187}
2188
2189static void
2190slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2191{
2192 if (!items)
2193 croak ("Coro::schedule_to expects a coroutine argument, caught");
2194
2195 frame->data = (void *)SvSTATE (arg [0]);
2196 frame->prepare = slf_prepare_schedule_to;
2197 frame->check = slf_check_nop;
2198}
2199
2200static void
2201slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{
2203 api_ready (aTHX_ SvRV (coro_current));
2204
2205 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2206}
2207
2208static void
2209slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 frame->prepare = prepare_cede;
2212 frame->check = slf_check_nop;
2213}
2214
2215static void
2216slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2217{
2218 frame->prepare = prepare_cede_notself;
2219 frame->check = slf_check_nop;
2220}
2221
2222/*
2223 * these not obviously related functions are all rolled into one
2224 * function to increase chances that they all will call transfer with the same
2225 * stack offset
2226 * SLF stands for "schedule-like-function".
2227 */
2228static OP *
2229pp_slf (pTHX)
2230{
2231 I32 checkmark; /* mark SP to see how many elements check has pushed */
2232
2233 /* set up the slf frame, unless it has already been set-up */
2234 /* the latter happens when a new coro has been started */
2235 /* or when a new cctx was attached to an existing coroutine */
2236 if (expect_true (!slf_frame.prepare))
2237 {
2238 /* first iteration */
2239 dSP;
2240 SV **arg = PL_stack_base + TOPMARK + 1;
2241 int items = SP - arg; /* args without function object */
2242 SV *gv = *sp;
2243
2244 /* do a quick consistency check on the "function" object, and if it isn't */
2245 /* for us, divert to the real entersub */
2246 if (SvTYPE (gv) != SVt_PVGV
2247 || !GvCV (gv)
2248 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2249 return PL_ppaddr[OP_ENTERSUB](aTHX);
2250
2251 if (!(PL_op->op_flags & OPf_STACKED))
2252 {
2253 /* ampersand-form of call, use @_ instead of stack */
2254 AV *av = GvAV (PL_defgv);
2255 arg = AvARRAY (av);
2256 items = AvFILLp (av) + 1;
2257 }
2258
2259 /* now call the init function, which needs to set up slf_frame */
2260 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2261 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2262
2263 /* pop args */
2264 SP = PL_stack_base + POPMARK;
2265
2266 PUTBACK;
2267 }
2268
2269 /* now that we have a slf_frame, interpret it! */
2270 /* we use a callback system not to make the code needlessly */
2271 /* complicated, but so we can run multiple perl coros from one cctx */
2272
2273 do
2274 {
2275 struct coro_transfer_args ta;
2276
2277 slf_frame.prepare (aTHX_ &ta);
2278 TRANSFER (ta, 0);
2279
2280 checkmark = PL_stack_sp - PL_stack_base;
2281 }
2282 while (slf_frame.check (aTHX_ &slf_frame));
2283
2284 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2285
2286 /* exception handling */
2287 if (expect_false (CORO_THROW))
2288 {
2289 SV *exception = sv_2mortal (CORO_THROW);
2290
2291 CORO_THROW = 0;
2292 sv_setsv (ERRSV, exception);
2293 croak (0);
2294 }
2295
2296 /* return value handling - mostly like entersub */
2297 /* make sure we put something on the stack in scalar context */
2298 if (GIMME_V == G_SCALAR)
2299 {
2300 dSP;
2301 SV **bot = PL_stack_base + checkmark;
2302
2303 if (sp == bot) /* too few, push undef */
2304 bot [1] = &PL_sv_undef;
2305 else if (sp != bot + 1) /* too many, take last one */
2306 bot [1] = *sp;
2307
2308 SP = bot + 1;
2309
2310 PUTBACK;
2311 }
2312
2313 return NORMAL;
2314}
2315
2316static void
2317api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2318{
2319 int i;
2320 SV **arg = PL_stack_base + ax;
2321 int items = PL_stack_sp - arg + 1;
2322
2323 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2324
2325 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2326 && PL_op->op_ppaddr != pp_slf)
2327 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2328
2329 CvFLAGS (cv) |= CVf_SLF;
2330 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2331 slf_cv = cv;
2332
2333 /* we patch the op, and then re-run the whole call */
2334 /* we have to put the same argument on the stack for this to work */
2335 /* and this will be done by pp_restore */
2336 slf_restore.op_next = (OP *)&slf_restore;
2337 slf_restore.op_type = OP_CUSTOM;
2338 slf_restore.op_ppaddr = pp_restore;
2339 slf_restore.op_first = PL_op;
2340
2341 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2342
2343 if (PL_op->op_flags & OPf_STACKED)
2344 {
2345 if (items > slf_arga)
2346 {
2347 slf_arga = items;
2348 free (slf_argv);
2349 slf_argv = malloc (slf_arga * sizeof (SV *));
2350 }
2351
2352 slf_argc = items;
2353
2354 for (i = 0; i < items; ++i)
2355 slf_argv [i] = SvREFCNT_inc (arg [i]);
2356 }
2357 else
2358 slf_argc = 0;
2359
2360 PL_op->op_ppaddr = pp_slf;
2361 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2362
2363 PL_op = (OP *)&slf_restore;
2364}
2365
2366/*****************************************************************************/
2367/* dynamic wind */
2368
2369static void
2370on_enterleave_call (pTHX_ SV *cb)
2371{
2372 dSP;
2373
2374 PUSHSTACK;
2375
2376 PUSHMARK (SP);
2377 PUTBACK;
2378 call_sv (cb, G_VOID | G_DISCARD);
2379 SPAGAIN;
2380
2381 POPSTACK;
2382}
2383
2384static SV *
2385coro_avp_pop_and_free (pTHX_ AV **avp)
2386{
2387 AV *av = *avp;
2388 SV *res = av_pop (av);
2389
2390 if (AvFILLp (av) < 0)
2391 {
2392 *avp = 0;
2393 SvREFCNT_dec (av);
2394 }
2395
2396 return res;
2397}
2398
2399static void
2400coro_pop_on_enter (pTHX_ void *coro)
2401{
2402 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2403 SvREFCNT_dec (cb);
2404}
2405
2406static void
2407coro_pop_on_leave (pTHX_ void *coro)
2408{
2409 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2410 on_enterleave_call (aTHX_ sv_2mortal (cb));
2411}
2412
2413/*****************************************************************************/
2414/* PerlIO::cede */
2415
2416typedef struct
2417{
2418 PerlIOBuf base;
2419 NV next, every;
2420} PerlIOCede;
2421
2422static IV
2423PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2424{
2425 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2426
2427 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2428 self->next = nvtime () + self->every;
2429
2430 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2431}
2432
2433static SV *
2434PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2435{
2436 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2437
2438 return newSVnv (self->every);
2439}
2440
2441static IV
2442PerlIOCede_flush (pTHX_ PerlIO *f)
2443{
2444 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2445 double now = nvtime ();
2446
2447 if (now >= self->next)
2448 {
2449 api_cede (aTHX);
2450 self->next = now + self->every;
2451 }
2452
2453 return PerlIOBuf_flush (aTHX_ f);
2454}
2455
2456static PerlIO_funcs PerlIO_cede =
2457{
2458 sizeof(PerlIO_funcs),
2459 "cede",
2460 sizeof(PerlIOCede),
2461 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2462 PerlIOCede_pushed,
2463 PerlIOBuf_popped,
2464 PerlIOBuf_open,
2465 PerlIOBase_binmode,
2466 PerlIOCede_getarg,
2467 PerlIOBase_fileno,
2468 PerlIOBuf_dup,
2469 PerlIOBuf_read,
2470 PerlIOBuf_unread,
2471 PerlIOBuf_write,
2472 PerlIOBuf_seek,
2473 PerlIOBuf_tell,
2474 PerlIOBuf_close,
2475 PerlIOCede_flush,
2476 PerlIOBuf_fill,
2477 PerlIOBase_eof,
2478 PerlIOBase_error,
2479 PerlIOBase_clearerr,
2480 PerlIOBase_setlinebuf,
2481 PerlIOBuf_get_base,
2482 PerlIOBuf_bufsiz,
2483 PerlIOBuf_get_ptr,
2484 PerlIOBuf_get_cnt,
2485 PerlIOBuf_set_ptrcnt,
2486};
2487
2488/*****************************************************************************/
2489/* Coro::Semaphore & Coro::Signal */
2490
2491static SV *
2492coro_waitarray_new (pTHX_ int count)
2493{
2494 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2495 AV *av = newAV ();
2496 SV **ary;
2497
2498 /* unfortunately, building manually saves memory */
2499 Newx (ary, 2, SV *);
2500 AvALLOC (av) = ary;
2501#if PERL_VERSION_ATLEAST (5,10,0)
2502 AvARRAY (av) = ary;
2503#else
2504 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2505 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2506 SvPVX ((SV *)av) = (char *)ary;
2507#endif
2508 AvMAX (av) = 1;
2509 AvFILLp (av) = 0;
2510 ary [0] = newSViv (count);
2511
2512 return newRV_noinc ((SV *)av);
2513}
2514
2515/* semaphore */
2516
2517static void
2518coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2519{
2520 SV *count_sv = AvARRAY (av)[0];
2521 IV count = SvIVX (count_sv);
2522
2523 count += adjust;
2524 SvIVX (count_sv) = count;
2525
2526 /* now wake up as many waiters as are expected to lock */
2527 while (count > 0 && AvFILLp (av) > 0)
2528 {
2529 SV *cb;
2530
2531 /* swap first two elements so we can shift a waiter */
2532 AvARRAY (av)[0] = AvARRAY (av)[1];
2533 AvARRAY (av)[1] = count_sv;
2534 cb = av_shift (av);
2535
2536 if (SvOBJECT (cb))
2537 {
2538 api_ready (aTHX_ cb);
2539 --count;
2540 }
2541 else if (SvTYPE (cb) == SVt_PVCV)
2542 {
2543 dSP;
2544 PUSHMARK (SP);
2545 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2546 PUTBACK;
2547 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2548 }
2549
2550 SvREFCNT_dec (cb);
2551 }
2552}
2553
2554static void
2555coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2556{
2557 /* call $sem->adjust (0) to possibly wake up some other waiters */
2558 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2559}
2560
2561static int
2562slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2563{
2564 AV *av = (AV *)frame->data;
2565 SV *count_sv = AvARRAY (av)[0];
2566
2567 /* if we are about to throw, don't actually acquire the lock, just throw */
2568 if (CORO_THROW)
2569 return 0;
2570 else if (SvIVX (count_sv) > 0)
2571 {
2572 SvSTATE_current->on_destroy = 0;
2573
2574 if (acquire)
2575 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2576 else
2577 coro_semaphore_adjust (aTHX_ av, 0);
2578
2579 return 0;
2580 }
2581 else
2582 {
2583 int i;
2584 /* if we were woken up but can't down, we look through the whole */
2585 /* waiters list and only add us if we aren't in there already */
2586 /* this avoids some degenerate memory usage cases */
2587
2588 for (i = 1; i <= AvFILLp (av); ++i)
2589 if (AvARRAY (av)[i] == SvRV (coro_current))
2590 return 1;
2591
2592 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2593 return 1;
2594 }
2595}
2596
2597static int
2598slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2599{
2600 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2601}
2602
2603static int
2604slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2605{
2606 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2607}
2608
2609static void
2610slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2611{
2612 AV *av = (AV *)SvRV (arg [0]);
2613
2614 if (SvIVX (AvARRAY (av)[0]) > 0)
2615 {
2616 frame->data = (void *)av;
2617 frame->prepare = prepare_nop;
2618 }
2619 else
2620 {
2621 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2622
2623 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2624 frame->prepare = prepare_schedule;
2625
2626 /* to avoid race conditions when a woken-up coro gets terminated */
2627 /* we arrange for a temporary on_destroy that calls adjust (0) */
2628 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2629 }
2630}
2631
2632static void
2633slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2634{
2635 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2636 frame->check = slf_check_semaphore_down;
2637}
2638
2639static void
2640slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2641{
2642 if (items >= 2)
2643 {
2644 /* callback form */
2645 AV *av = (AV *)SvRV (arg [0]);
2646 SV *cb_cv = s_get_cv_croak (arg [1]);
2647
2648 av_push (av, SvREFCNT_inc_NN (cb_cv));
2649
2650 if (SvIVX (AvARRAY (av)[0]) > 0)
2651 coro_semaphore_adjust (aTHX_ av, 0);
2652
2653 frame->prepare = prepare_nop;
2654 frame->check = slf_check_nop;
2655 }
2656 else
2657 {
2658 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2659 frame->check = slf_check_semaphore_wait;
2660 }
2661}
2662
2663/* signal */
2664
2665static void
2666coro_signal_wake (pTHX_ AV *av, int count)
2667{
2668 SvIVX (AvARRAY (av)[0]) = 0;
2669
2670 /* now signal count waiters */
2671 while (count > 0 && AvFILLp (av) > 0)
2672 {
2673 SV *cb;
2674
2675 /* swap first two elements so we can shift a waiter */
2676 cb = AvARRAY (av)[0];
2677 AvARRAY (av)[0] = AvARRAY (av)[1];
2678 AvARRAY (av)[1] = cb;
2679
2680 cb = av_shift (av);
2681
2682 if (SvTYPE (cb) == SVt_PVCV)
2683 {
2684 dSP;
2685 PUSHMARK (SP);
2686 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2687 PUTBACK;
2688 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2689 }
2690 else
2691 {
2692 api_ready (aTHX_ cb);
2693 sv_setiv (cb, 0); /* signal waiter */
2694 }
2695
2696 SvREFCNT_dec (cb);
2697
2698 --count;
2699 }
2700}
2701
2702static int
2703slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2704{
2705 /* if we are about to throw, also stop waiting */
2706 return SvROK ((SV *)frame->data) && !CORO_THROW;
2707}
2708
2709static void
2710slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2711{
2712 AV *av = (AV *)SvRV (arg [0]);
2713
2714 if (items >= 2)
2715 {
2716 SV *cb_cv = s_get_cv_croak (arg [1]);
2717 av_push (av, SvREFCNT_inc_NN (cb_cv));
2718
2719 if (SvIVX (AvARRAY (av)[0]))
2720 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2721
2722 frame->prepare = prepare_nop;
2723 frame->check = slf_check_nop;
2724 }
2725 else if (SvIVX (AvARRAY (av)[0]))
2726 {
2727 SvIVX (AvARRAY (av)[0]) = 0;
2728 frame->prepare = prepare_nop;
2729 frame->check = slf_check_nop;
2730 }
2731 else
2732 {
2733 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2734
2735 av_push (av, waiter);
2736
2737 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_signal_wait;
2740 }
2741}
2742
2743/*****************************************************************************/
2744/* Coro::AIO */
2745
2746#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2747
2748/* helper storage struct */
2749struct io_state
2750{
2751 int errorno;
2752 I32 laststype; /* U16 in 5.10.0 */
2753 int laststatval;
2754 Stat_t statcache;
2755};
2756
2757static void
2758coro_aio_callback (pTHX_ CV *cv)
2759{
2760 dXSARGS;
2761 AV *state = (AV *)S_GENSUB_ARG;
2762 SV *coro = av_pop (state);
2763 SV *data_sv = newSV (sizeof (struct io_state));
2764
2765 av_extend (state, items - 1);
2766
2767 sv_upgrade (data_sv, SVt_PV);
2768 SvCUR_set (data_sv, sizeof (struct io_state));
2769 SvPOK_only (data_sv);
2770
2771 {
2772 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2773
2774 data->errorno = errno;
2775 data->laststype = PL_laststype;
2776 data->laststatval = PL_laststatval;
2777 data->statcache = PL_statcache;
2778 }
2779
2780 /* now build the result vector out of all the parameters and the data_sv */
2781 {
2782 int i;
2783
2784 for (i = 0; i < items; ++i)
2785 av_push (state, SvREFCNT_inc_NN (ST (i)));
2786 }
2787
2788 av_push (state, data_sv);
2789
2790 api_ready (aTHX_ coro);
2791 SvREFCNT_dec (coro);
2792 SvREFCNT_dec ((AV *)state);
2793}
2794
2795static int
2796slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2797{
2798 AV *state = (AV *)frame->data;
2799
2800 /* if we are about to throw, return early */
2801 /* this does not cancel the aio request, but at least */
2802 /* it quickly returns */
2803 if (CORO_THROW)
2804 return 0;
2805
2806 /* one element that is an RV? repeat! */
2807 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2808 return 1;
2809
2810 /* restore status */
2811 {
2812 SV *data_sv = av_pop (state);
2813 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2814
2815 errno = data->errorno;
2816 PL_laststype = data->laststype;
2817 PL_laststatval = data->laststatval;
2818 PL_statcache = data->statcache;
2819
2820 SvREFCNT_dec (data_sv);
2821 }
2822
2823 /* push result values */
2824 {
2825 dSP;
2826 int i;
2827
2828 EXTEND (SP, AvFILLp (state) + 1);
2829 for (i = 0; i <= AvFILLp (state); ++i)
2830 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2831
2832 PUTBACK;
2833 }
2834
2835 return 0;
2836}
2837
2838static void
2839slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2840{
2841 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2842 SV *coro_hv = SvRV (coro_current);
2843 struct coro *coro = SvSTATE_hv (coro_hv);
2844
2845 /* put our coroutine id on the state arg */
2846 av_push (state, SvREFCNT_inc_NN (coro_hv));
2847
2848 /* first see whether we have a non-zero priority and set it as AIO prio */
2849 if (coro->prio)
2850 {
2851 dSP;
2852
2853 static SV *prio_cv;
2854 static SV *prio_sv;
2855
2856 if (expect_false (!prio_cv))
2857 {
2858 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2859 prio_sv = newSViv (0);
2860 }
2861
2862 PUSHMARK (SP);
2863 sv_setiv (prio_sv, coro->prio);
2864 XPUSHs (prio_sv);
2865
2866 PUTBACK;
2867 call_sv (prio_cv, G_VOID | G_DISCARD);
2868 }
2869
2870 /* now call the original request */
2871 {
2872 dSP;
2873 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2874 int i;
2875
2876 PUSHMARK (SP);
2877
2878 /* first push all args to the stack */
2879 EXTEND (SP, items + 1);
2880
2881 for (i = 0; i < items; ++i)
2882 PUSHs (arg [i]);
2883
2884 /* now push the callback closure */
2885 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2886
2887 /* now call the AIO function - we assume our request is uncancelable */
2888 PUTBACK;
2889 call_sv ((SV *)req, G_VOID | G_DISCARD);
2890 }
2891
2892 /* now that the requets is going, we loop toll we have a result */
2893 frame->data = (void *)state;
2894 frame->prepare = prepare_schedule;
2895 frame->check = slf_check_aio_req;
2896}
2897
2898static void
2899coro_aio_req_xs (pTHX_ CV *cv)
2900{
2901 dXSARGS;
2902
2903 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2904
2905 XSRETURN_EMPTY;
2906}
2907
2908/*****************************************************************************/
2909
2910#if CORO_CLONE
2911# include "clone.c"
2912#endif
2913
1515MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2914MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1516 2915
1517PROTOTYPES: DISABLE 2916PROTOTYPES: DISABLE
1518 2917
1519BOOT: 2918BOOT:
1520{ 2919{
1521#ifdef USE_ITHREADS 2920#ifdef USE_ITHREADS
1522 MUTEX_INIT (&coro_mutex); 2921# if CORO_PTHREAD
2922 coro_thx = PERL_GET_CONTEXT;
2923# endif
1523#endif 2924#endif
1524 BOOT_PAGESIZE; 2925 BOOT_PAGESIZE;
1525 2926
2927 cctx_current = cctx_new_empty ();
2928
1526 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2929 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1527 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2930 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1528 2931
2932 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2933 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2934 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2935
1529 hv_sig = coro_get_hv ("SIG", TRUE); 2936 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1530 sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); 2937 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1531 sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); 2938 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1532
1533 if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1534 if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1535 2939
1536 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2940 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1537 2941
1538 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 2942 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1539 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 2943 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
… …
1544 main_top_env = PL_top_env; 2948 main_top_env = PL_top_env;
1545 2949
1546 while (main_top_env->je_prev) 2950 while (main_top_env->je_prev)
1547 main_top_env = main_top_env->je_prev; 2951 main_top_env = main_top_env->je_prev;
1548 2952
2953 {
2954 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2955
2956 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2957 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2958
2959 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2960 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2961 }
2962
1549 coroapi.ver = CORO_API_VERSION; 2963 coroapi.ver = CORO_API_VERSION;
1550 coroapi.rev = CORO_API_REVISION; 2964 coroapi.rev = CORO_API_REVISION;
2965
1551 coroapi.transfer = api_transfer; 2966 coroapi.transfer = api_transfer;
1552 2967
2968 coroapi.sv_state = SvSTATE_;
2969 coroapi.execute_slf = api_execute_slf;
2970 coroapi.prepare_nop = prepare_nop;
2971 coroapi.prepare_schedule = prepare_schedule;
2972 coroapi.prepare_cede = prepare_cede;
2973 coroapi.prepare_cede_notself = prepare_cede_notself;
2974
2975 {
2976 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2977
2978 if (!svp) croak ("Time::HiRes is required");
2979 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2980
2981 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2982
2983 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2984 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2985 }
2986
1553 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2987 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1554} 2988}
1555 2989
1556SV * 2990SV *
1557new (char *klass, ...) 2991new (char *klass, ...)
2992 ALIAS:
2993 Coro::new = 1
1558 CODE: 2994 CODE:
1559{ 2995{
1560 struct coro *coro; 2996 struct coro *coro;
2997 MAGIC *mg;
1561 HV *hv; 2998 HV *hv;
2999 SV *cb;
1562 int i; 3000 int i;
3001
3002 if (items > 1)
3003 {
3004 cb = s_get_cv_croak (ST (1));
3005
3006 if (!ix)
3007 {
3008 if (CvISXSUB (cb))
3009 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3010
3011 if (!CvROOT (cb))
3012 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3013 }
3014 }
1563 3015
1564 Newz (0, coro, 1, struct coro); 3016 Newz (0, coro, 1, struct coro);
1565 coro->args = newAV (); 3017 coro->args = newAV ();
1566 coro->flags = CF_NEW; 3018 coro->flags = CF_NEW;
1567 3019
1568 if (coro_first) coro_first->prev = coro; 3020 if (coro_first) coro_first->prev = coro;
1569 coro->next = coro_first; 3021 coro->next = coro_first;
1570 coro_first = coro; 3022 coro_first = coro;
1571 3023
1572 coro->hv = hv = newHV (); 3024 coro->hv = hv = newHV ();
1573 sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; 3025 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3026 mg->mg_flags |= MGf_DUP;
1574 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3027 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1575 3028
3029 if (items > 1)
3030 {
1576 av_extend (coro->args, items - 1); 3031 av_extend (coro->args, items - 1 + ix - 1);
3032
3033 if (ix)
3034 {
3035 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3036 cb = (SV *)cv_coro_run;
3037 }
3038
3039 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3040
1577 for (i = 1; i < items; i++) 3041 for (i = 2; i < items; i++)
1578 av_push (coro->args, newSVsv (ST (i))); 3042 av_push (coro->args, newSVsv (ST (i)));
3043 }
1579} 3044}
1580 OUTPUT: 3045 OUTPUT:
1581 RETVAL 3046 RETVAL
1582 3047
1583# these not obviously related functions are all rolled into the same xs
1584# function to increase chances that they all will call transfer with the same
1585# stack offset
1586void 3048void
1587_set_stacklevel (...) 3049transfer (...)
1588 ALIAS: 3050 PROTOTYPE: $$
1589 Coro::State::transfer = 1 3051 CODE:
1590 Coro::schedule = 2 3052 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1591 Coro::cede = 3
1592 Coro::cede_notself = 4
1593 CODE:
1594{
1595 struct transfer_args ta;
1596
1597 switch (ix)
1598 {
1599 case 0:
1600 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1601 ta.next = 0;
1602 break;
1603
1604 case 1:
1605 if (items != 2)
1606 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1607
1608 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1609 break;
1610
1611 case 2:
1612 prepare_schedule (aTHX_ &ta);
1613 break;
1614
1615 case 3:
1616 prepare_cede (aTHX_ &ta);
1617 break;
1618
1619 case 4:
1620 if (!prepare_cede_notself (aTHX_ &ta))
1621 XSRETURN_EMPTY;
1622
1623 break;
1624 }
1625
1626 BARRIER;
1627 PUTBACK;
1628 TRANSFER (ta);
1629 SPAGAIN; /* might be the sp of a different coroutine now */
1630 /* be extra careful not to ever do anything after TRANSFER */
1631}
1632 3053
1633bool 3054bool
1634_destroy (SV *coro_sv) 3055_destroy (SV *coro_sv)
1635 CODE: 3056 CODE:
1636 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3057 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1637 OUTPUT: 3058 OUTPUT:
1638 RETVAL 3059 RETVAL
1639 3060
1640void 3061void
1641_exit (code) 3062_exit (int code)
1642 int code
1643 PROTOTYPE: $ 3063 PROTOTYPE: $
1644 CODE: 3064 CODE:
1645 _exit (code); 3065 _exit (code);
1646 3066
3067SV *
3068clone (Coro::State coro)
3069 CODE:
3070{
3071#if CORO_CLONE
3072 struct coro *ncoro = coro_clone (aTHX_ coro);
3073 MAGIC *mg;
3074 /* TODO: too much duplication */
3075 ncoro->hv = newHV ();
3076 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3077 mg->mg_flags |= MGf_DUP;
3078 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3079#else
3080 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3081#endif
3082}
3083 OUTPUT:
3084 RETVAL
3085
1647int 3086int
1648cctx_stacksize (int new_stacksize = 0) 3087cctx_stacksize (int new_stacksize = 0)
3088 PROTOTYPE: ;$
1649 CODE: 3089 CODE:
1650 RETVAL = coro_stacksize; 3090 RETVAL = cctx_stacksize;
1651 if (new_stacksize) 3091 if (new_stacksize)
3092 {
1652 coro_stacksize = new_stacksize; 3093 cctx_stacksize = new_stacksize;
3094 ++cctx_gen;
3095 }
1653 OUTPUT: 3096 OUTPUT:
1654 RETVAL 3097 RETVAL
1655 3098
1656int 3099int
3100cctx_max_idle (int max_idle = 0)
3101 PROTOTYPE: ;$
3102 CODE:
3103 RETVAL = cctx_max_idle;
3104 if (max_idle > 1)
3105 cctx_max_idle = max_idle;
3106 OUTPUT:
3107 RETVAL
3108
3109int
1657cctx_count () 3110cctx_count ()
3111 PROTOTYPE:
1658 CODE: 3112 CODE:
1659 RETVAL = cctx_count; 3113 RETVAL = cctx_count;
1660 OUTPUT: 3114 OUTPUT:
1661 RETVAL 3115 RETVAL
1662 3116
1663int 3117int
1664cctx_idle () 3118cctx_idle ()
3119 PROTOTYPE:
1665 CODE: 3120 CODE:
1666 RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2]; 3121 RETVAL = cctx_idle;
1667 OUTPUT: 3122 OUTPUT:
1668 RETVAL 3123 RETVAL
1669 3124
1670void 3125void
1671list () 3126list ()
3127 PROTOTYPE:
1672 PPCODE: 3128 PPCODE:
1673{ 3129{
1674 struct coro *coro; 3130 struct coro *coro;
1675 for (coro = coro_first; coro; coro = coro->next) 3131 for (coro = coro_first; coro; coro = coro->next)
1676 if (coro->hv) 3132 if (coro->hv)
… …
1681call (Coro::State coro, SV *coderef) 3137call (Coro::State coro, SV *coderef)
1682 ALIAS: 3138 ALIAS:
1683 eval = 1 3139 eval = 1
1684 CODE: 3140 CODE:
1685{ 3141{
1686 if (coro->mainstack) 3142 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1687 { 3143 {
1688 struct coro temp; 3144 struct coro *current = SvSTATE_current;
1689 3145
1690 if (!(coro->flags & CF_RUNNING)) 3146 if (current != coro)
1691 { 3147 {
3148 PUTBACK;
1692 save_perl (aTHX_ &temp); 3149 save_perl (aTHX_ current);
1693 load_perl (aTHX_ coro); 3150 load_perl (aTHX_ coro);
3151 SPAGAIN;
1694 } 3152 }
1695 3153
1696 {
1697 dSP;
1698 ENTER;
1699 SAVETMPS;
1700 PUTBACK;
1701 PUSHSTACK; 3154 PUSHSTACK;
3155
1702 PUSHMARK (SP); 3156 PUSHMARK (SP);
3157 PUTBACK;
1703 3158
1704 if (ix) 3159 if (ix)
1705 eval_sv (coderef, 0); 3160 eval_sv (coderef, 0);
1706 else 3161 else
1707 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3162 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1708 3163
1709 POPSTACK; 3164 POPSTACK;
1710 FREETMPS; 3165 SPAGAIN;
1711 LEAVE;
1712 PUTBACK;
1713 }
1714 3166
1715 if (!(coro->flags & CF_RUNNING)) 3167 if (current != coro)
1716 { 3168 {
3169 PUTBACK;
1717 save_perl (aTHX_ coro); 3170 save_perl (aTHX_ coro);
1718 load_perl (aTHX_ &temp); 3171 load_perl (aTHX_ current);
3172 SPAGAIN;
1719 } 3173 }
1720 } 3174 }
1721} 3175}
1722 3176
1723SV * 3177SV *
… …
1726 ALIAS: 3180 ALIAS:
1727 is_ready = CF_READY 3181 is_ready = CF_READY
1728 is_running = CF_RUNNING 3182 is_running = CF_RUNNING
1729 is_new = CF_NEW 3183 is_new = CF_NEW
1730 is_destroyed = CF_DESTROYED 3184 is_destroyed = CF_DESTROYED
3185 is_suspended = CF_SUSPENDED
1731 CODE: 3186 CODE:
1732 RETVAL = boolSV (coro->flags & ix); 3187 RETVAL = boolSV (coro->flags & ix);
1733 OUTPUT: 3188 OUTPUT:
1734 RETVAL 3189 RETVAL
1735 3190
1736void 3191void
3192throw (Coro::State self, SV *throw = &PL_sv_undef)
3193 PROTOTYPE: $;$
3194 CODE:
3195{
3196 struct coro *current = SvSTATE_current;
3197 SV **throwp = self == current ? &CORO_THROW : &self->except;
3198 SvREFCNT_dec (*throwp);
3199 SvGETMAGIC (throw);
3200 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3201}
3202
3203void
1737api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3204api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3205 PROTOTYPE: $;$
3206 C_ARGS: aTHX_ coro, flags
1738 3207
1739SV * 3208SV *
1740has_stack (Coro::State coro) 3209has_cctx (Coro::State coro)
1741 PROTOTYPE: $ 3210 PROTOTYPE: $
1742 CODE: 3211 CODE:
1743 RETVAL = boolSV (!!coro->cctx); 3212 /* maybe manage the running flag differently */
3213 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1744 OUTPUT: 3214 OUTPUT:
1745 RETVAL 3215 RETVAL
1746 3216
1747int 3217int
1748is_traced (Coro::State coro) 3218is_traced (Coro::State coro)
… …
1750 CODE: 3220 CODE:
1751 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3221 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1752 OUTPUT: 3222 OUTPUT:
1753 RETVAL 3223 RETVAL
1754 3224
1755IV 3225UV
1756rss (Coro::State coro) 3226rss (Coro::State coro)
1757 PROTOTYPE: $ 3227 PROTOTYPE: $
1758 ALIAS: 3228 ALIAS:
1759 usecount = 1 3229 usecount = 1
1760 CODE: 3230 CODE:
… …
1764 case 1: RETVAL = coro->usecount; break; 3234 case 1: RETVAL = coro->usecount; break;
1765 } 3235 }
1766 OUTPUT: 3236 OUTPUT:
1767 RETVAL 3237 RETVAL
1768 3238
3239void
3240force_cctx ()
3241 PROTOTYPE:
3242 CODE:
3243 cctx_current->idle_sp = 0;
3244
3245void
3246swap_defsv (Coro::State self)
3247 PROTOTYPE: $
3248 ALIAS:
3249 swap_defav = 1
3250 CODE:
3251 if (!self->slot)
3252 croak ("cannot swap state with coroutine that has no saved state,");
3253 else
3254 {
3255 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3256 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3257
3258 SV *tmp = *src; *src = *dst; *dst = tmp;
3259 }
3260
3261void
3262cancel (Coro::State self)
3263 CODE:
3264 coro_state_destroy (aTHX_ self);
3265 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3266
3267
3268SV *
3269enable_times (int enabled = enable_times)
3270 CODE:
3271{
3272 RETVAL = boolSV (enable_times);
3273
3274 if (enabled != enable_times)
3275 {
3276 enable_times = enabled;
3277
3278 coro_times_update ();
3279 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3280 }
3281}
3282 OUTPUT:
3283 RETVAL
3284
3285void
3286times (Coro::State self)
3287 PPCODE:
3288{
3289 struct coro *current = SvSTATE (coro_current);
3290
3291 if (expect_false (current == self))
3292 {
3293 coro_times_update ();
3294 coro_times_add (SvSTATE (coro_current));
3295 }
3296
3297 EXTEND (SP, 2);
3298 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3299 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3300
3301 if (expect_false (current == self))
3302 coro_times_sub (SvSTATE (coro_current));
3303}
1769 3304
1770MODULE = Coro::State PACKAGE = Coro 3305MODULE = Coro::State PACKAGE = Coro
1771 3306
1772BOOT: 3307BOOT:
1773{ 3308{
1774 int i;
1775
1776 sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); 3309 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1777 sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); 3310 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3311 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3312 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3313 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1778 av_async_pool = coro_get_av ("Coro::async_pool", TRUE); 3314 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3315 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3316 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3317 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
1779 3318
1780 coro_current = coro_get_sv ("Coro::current", FALSE); 3319 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
1781 SvREADONLY_on (coro_current); 3320 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3321 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3322 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1782 3323
1783 coro_stash = gv_stashpv ("Coro", TRUE); 3324 coro_stash = gv_stashpv ("Coro", TRUE);
1784 3325
1785 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3326 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1786 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3327 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1787 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3328 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1788 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3329 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1789 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3330 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1790 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3331 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1791
1792 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1793 coro_ready[i] = newAV ();
1794 3332
1795 { 3333 {
1796 SV *sv = perl_get_sv ("Coro::API", TRUE); 3334 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1797 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1798 3335
1799 coroapi.schedule = api_schedule; 3336 coroapi.schedule = api_schedule;
3337 coroapi.schedule_to = api_schedule_to;
1800 coroapi.cede = api_cede; 3338 coroapi.cede = api_cede;
1801 coroapi.cede_notself = api_cede_notself; 3339 coroapi.cede_notself = api_cede_notself;
1802 coroapi.ready = api_ready; 3340 coroapi.ready = api_ready;
1803 coroapi.is_ready = api_is_ready; 3341 coroapi.is_ready = api_is_ready;
1804 coroapi.nready = &coro_nready; 3342 coroapi.nready = coro_nready;
1805 coroapi.current = coro_current; 3343 coroapi.current = coro_current;
1806 3344
1807 GCoroAPI = &coroapi; 3345 /*GCoroAPI = &coroapi;*/
1808 sv_setiv (sv, (IV)&coroapi); 3346 sv_setiv (sv, (IV)&coroapi);
1809 SvREADONLY_on (sv); 3347 SvREADONLY_on (sv);
1810 } 3348 }
1811} 3349}
3350
3351void
3352terminate (...)
3353 CODE:
3354 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3355
3356void
3357schedule (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3360
3361void
3362schedule_to (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3365
3366void
3367cede_to (...)
3368 CODE:
3369 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3370
3371void
3372cede (...)
3373 CODE:
3374 CORO_EXECUTE_SLF_XS (slf_init_cede);
3375
3376void
3377cede_notself (...)
3378 CODE:
3379 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1812 3380
1813void 3381void
1814_set_current (SV *current) 3382_set_current (SV *current)
1815 PROTOTYPE: $ 3383 PROTOTYPE: $
1816 CODE: 3384 CODE:
1817 SvREFCNT_dec (SvRV (coro_current)); 3385 SvREFCNT_dec (SvRV (coro_current));
1818 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3386 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3387
3388void
3389_set_readyhook (SV *hook)
3390 PROTOTYPE: $
3391 CODE:
3392 SvREFCNT_dec (coro_readyhook);
3393 SvGETMAGIC (hook);
3394 if (SvOK (hook))
3395 {
3396 coro_readyhook = newSVsv (hook);
3397 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3398 CORO_READYHOOK ();
3399 }
3400 else
3401 {
3402 coro_readyhook = 0;
3403 CORO_READYHOOK = 0;
3404 }
1819 3405
1820int 3406int
1821prio (Coro::State coro, int newprio = 0) 3407prio (Coro::State coro, int newprio = 0)
3408 PROTOTYPE: $;$
1822 ALIAS: 3409 ALIAS:
1823 nice = 1 3410 nice = 1
1824 CODE: 3411 CODE:
1825{ 3412{
1826 RETVAL = coro->prio; 3413 RETVAL = coro->prio;
… …
1828 if (items > 1) 3415 if (items > 1)
1829 { 3416 {
1830 if (ix) 3417 if (ix)
1831 newprio = coro->prio - newprio; 3418 newprio = coro->prio - newprio;
1832 3419
1833 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3420 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
1834 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3421 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
1835 3422
1836 coro->prio = newprio; 3423 coro->prio = newprio;
1837 } 3424 }
1838} 3425}
1839 OUTPUT: 3426 OUTPUT:
… …
1841 3428
1842SV * 3429SV *
1843ready (SV *self) 3430ready (SV *self)
1844 PROTOTYPE: $ 3431 PROTOTYPE: $
1845 CODE: 3432 CODE:
1846 RETVAL = boolSV (api_ready (self)); 3433 RETVAL = boolSV (api_ready (aTHX_ self));
1847 OUTPUT: 3434 OUTPUT:
1848 RETVAL 3435 RETVAL
1849 3436
1850int 3437int
1851nready (...) 3438nready (...)
… …
1854 RETVAL = coro_nready; 3441 RETVAL = coro_nready;
1855 OUTPUT: 3442 OUTPUT:
1856 RETVAL 3443 RETVAL
1857 3444
1858void 3445void
1859throw (Coro::State self, SV *throw = &PL_sv_undef) 3446suspend (Coro::State self)
1860 PROTOTYPE: $;$ 3447 PROTOTYPE: $
1861 CODE: 3448 CODE:
1862 SvREFCNT_dec (self->throw); 3449 self->flags |= CF_SUSPENDED;
1863 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1864 3450
1865# for async_pool speedup
1866void 3451void
1867_pool_1 (SV *cb) 3452resume (Coro::State self)
3453 PROTOTYPE: $
1868 CODE: 3454 CODE:
1869{ 3455 self->flags &= ~CF_SUSPENDED;
1870 struct coro *coro = SvSTATE (coro_current);
1871 HV *hv = (HV *)SvRV (coro_current);
1872 AV *defav = GvAV (PL_defgv);
1873 SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
1874 AV *invoke_av;
1875 int i, len;
1876 3456
1877 if (!invoke) 3457void
1878 croak ("\3async_pool terminate\2\n"); 3458_pool_handler (...)
3459 CODE:
3460 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1879 3461
1880 SvREFCNT_dec (coro->saved_deffh); 3462void
1881 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); 3463async_pool (SV *cv, ...)
3464 PROTOTYPE: &@
3465 PPCODE:
3466{
3467 HV *hv = (HV *)av_pop (av_async_pool);
3468 AV *av = newAV ();
3469 SV *cb = ST (0);
3470 int i;
1882 3471
1883 hv_store (hv, "desc", sizeof ("desc") - 1, 3472 av_extend (av, items - 2);
1884 newSVpvn (strpair ("[async_pool]")), 0); 3473 for (i = 1; i < items; ++i)
3474 av_push (av, SvREFCNT_inc_NN (ST (i)));
1885 3475
1886 invoke_av = (AV *)SvRV (invoke); 3476 if ((SV *)hv == &PL_sv_undef)
1887 len = av_len (invoke_av);
1888
1889 sv_setsv (cb, AvARRAY (invoke_av)[0]);
1890
1891 if (len > 0)
1892 { 3477 {
1893 av_fill (defav, len - 1); 3478 PUSHMARK (SP);
1894 for (i = 0; i < len; ++i) 3479 EXTEND (SP, 2);
1895 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3480 PUSHs (sv_Coro);
3481 PUSHs ((SV *)cv_pool_handler);
3482 PUTBACK;
3483 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3484 SPAGAIN;
3485
3486 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
1896 } 3487 }
1897 3488
3489 {
3490 struct coro *coro = SvSTATE_hv (hv);
3491
3492 assert (!coro->invoke_cb);
3493 assert (!coro->invoke_av);
3494 coro->invoke_cb = SvREFCNT_inc (cb);
3495 coro->invoke_av = av;
3496 }
3497
3498 api_ready (aTHX_ (SV *)hv);
3499
3500 if (GIMME_V != G_VOID)
3501 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3502 else
1898 SvREFCNT_dec (invoke); 3503 SvREFCNT_dec (hv);
1899} 3504}
1900 3505
1901void 3506SV *
1902_pool_2 (SV *cb) 3507rouse_cb ()
3508 PROTOTYPE:
1903 CODE: 3509 CODE:
1904{ 3510 RETVAL = coro_new_rouse_cb (aTHX);
1905 struct coro *coro = SvSTATE (coro_current);
1906
1907 sv_setsv (cb, &PL_sv_undef);
1908
1909 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1910 coro->saved_deffh = 0;
1911
1912 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1913 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1914 croak ("\3async_pool terminate\2\n");
1915
1916 av_clear (GvAV (PL_defgv));
1917 hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
1918 newSVpvn (strpair ("[async_pool idle]")), 0);
1919
1920 coro->prio = 0;
1921
1922 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1923 api_trace (coro_current, 0);
1924
1925 av_push (av_async_pool, newSVsv (coro_current));
1926}
1927
1928
1929MODULE = Coro::State PACKAGE = Coro::AIO
1930
1931SV *
1932_get_state ()
1933 CODE:
1934{
1935 struct io_state *data;
1936
1937 RETVAL = newSV (sizeof (struct io_state));
1938 data = (struct io_state *)SvPVX (RETVAL);
1939 SvCUR_set (RETVAL, sizeof (struct io_state));
1940 SvPOK_only (RETVAL);
1941
1942 data->errorno = errno;
1943 data->laststype = PL_laststype;
1944 data->laststatval = PL_laststatval;
1945 data->statcache = PL_statcache;
1946}
1947 OUTPUT: 3511 OUTPUT:
1948 RETVAL 3512 RETVAL
1949 3513
1950void 3514void
1951_set_state (char *data_) 3515rouse_wait (...)
3516 PROTOTYPE: ;$
3517 PPCODE:
3518 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3519
3520void
3521on_enter (SV *block)
3522 ALIAS:
3523 on_leave = 1
1952 PROTOTYPE: $ 3524 PROTOTYPE: &
1953 CODE: 3525 CODE:
1954{ 3526{
1955 struct io_state *data = (void *)data_; 3527 struct coro *coro = SvSTATE_current;
3528 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
1956 3529
1957 errno = data->errorno; 3530 block = s_get_cv_croak (block);
1958 PL_laststype = data->laststype;
1959 PL_laststatval = data->laststatval;
1960 PL_statcache = data->statcache;
1961}
1962 3531
3532 if (!*avp)
3533 *avp = newAV ();
3534
3535 av_push (*avp, SvREFCNT_inc (block));
3536
3537 if (!ix)
3538 on_enterleave_call (aTHX_ block);
3539
3540 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3541 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3542 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3543}
3544
3545
3546MODULE = Coro::State PACKAGE = PerlIO::cede
3547
3548BOOT:
3549 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3550
3551
3552MODULE = Coro::State PACKAGE = Coro::Semaphore
3553
3554SV *
3555new (SV *klass, SV *count = 0)
3556 CODE:
3557{
3558 int semcnt = 1;
3559
3560 if (count)
3561 {
3562 SvGETMAGIC (count);
3563
3564 if (SvOK (count))
3565 semcnt = SvIV (count);
3566 }
3567
3568 RETVAL = sv_bless (
3569 coro_waitarray_new (aTHX_ semcnt),
3570 GvSTASH (CvGV (cv))
3571 );
3572}
3573 OUTPUT:
3574 RETVAL
3575
3576# helper for Coro::Channel and others
3577SV *
3578_alloc (int count)
3579 CODE:
3580 RETVAL = coro_waitarray_new (aTHX_ count);
3581 OUTPUT:
3582 RETVAL
3583
3584SV *
3585count (SV *self)
3586 CODE:
3587 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3588 OUTPUT:
3589 RETVAL
3590
3591void
3592up (SV *self, int adjust = 1)
3593 ALIAS:
3594 adjust = 1
3595 CODE:
3596 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3597
3598void
3599down (...)
3600 CODE:
3601 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3602
3603void
3604wait (...)
3605 CODE:
3606 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3607
3608void
3609try (SV *self)
3610 PPCODE:
3611{
3612 AV *av = (AV *)SvRV (self);
3613 SV *count_sv = AvARRAY (av)[0];
3614 IV count = SvIVX (count_sv);
3615
3616 if (count > 0)
3617 {
3618 --count;
3619 SvIVX (count_sv) = count;
3620 XSRETURN_YES;
3621 }
3622 else
3623 XSRETURN_NO;
3624}
3625
3626void
3627waiters (SV *self)
3628 PPCODE:
3629{
3630 AV *av = (AV *)SvRV (self);
3631 int wcount = AvFILLp (av) + 1 - 1;
3632
3633 if (GIMME_V == G_SCALAR)
3634 XPUSHs (sv_2mortal (newSViv (wcount)));
3635 else
3636 {
3637 int i;
3638 EXTEND (SP, wcount);
3639 for (i = 1; i <= wcount; ++i)
3640 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3641 }
3642}
3643
3644MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3645
3646void
3647_may_delete (SV *sem, int count, int extra_refs)
3648 PPCODE:
3649{
3650 AV *av = (AV *)SvRV (sem);
3651
3652 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3653 && AvFILLp (av) == 0 /* no waiters, just count */
3654 && SvIV (AvARRAY (av)[0]) == count)
3655 XSRETURN_YES;
3656
3657 XSRETURN_NO;
3658}
3659
3660MODULE = Coro::State PACKAGE = Coro::Signal
3661
3662SV *
3663new (SV *klass)
3664 CODE:
3665 RETVAL = sv_bless (
3666 coro_waitarray_new (aTHX_ 0),
3667 GvSTASH (CvGV (cv))
3668 );
3669 OUTPUT:
3670 RETVAL
3671
3672void
3673wait (...)
3674 CODE:
3675 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3676
3677void
3678broadcast (SV *self)
3679 CODE:
3680{
3681 AV *av = (AV *)SvRV (self);
3682 coro_signal_wake (aTHX_ av, AvFILLp (av));
3683}
3684
3685void
3686send (SV *self)
3687 CODE:
3688{
3689 AV *av = (AV *)SvRV (self);
3690
3691 if (AvFILLp (av))
3692 coro_signal_wake (aTHX_ av, 1);
3693 else
3694 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3695}
3696
3697IV
3698awaited (SV *self)
3699 CODE:
3700 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3701 OUTPUT:
3702 RETVAL
3703
3704
3705MODULE = Coro::State PACKAGE = Coro::AnyEvent
3706
3707BOOT:
3708 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3709
3710void
3711_schedule (...)
3712 CODE:
3713{
3714 static int incede;
3715
3716 api_cede_notself (aTHX);
3717
3718 ++incede;
3719 while (coro_nready >= incede && api_cede (aTHX))
3720 ;
3721
3722 sv_setsv (sv_activity, &PL_sv_undef);
3723 if (coro_nready >= incede)
3724 {
3725 PUSHMARK (SP);
3726 PUTBACK;
3727 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3728 }
3729
3730 --incede;
3731}
3732
3733
3734MODULE = Coro::State PACKAGE = Coro::AIO
3735
3736void
3737_register (char *target, char *proto, SV *req)
3738 CODE:
3739{
3740 SV *req_cv = s_get_cv_croak (req);
3741 /* newXSproto doesn't return the CV on 5.8 */
3742 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3743 sv_setpv ((SV *)slf_cv, proto);
3744 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3745}
3746
3747MODULE = Coro::State PACKAGE = Coro::Select
3748
3749void
3750patch_pp_sselect ()
3751 CODE:
3752 if (!coro_old_pp_sselect)
3753 {
3754 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3755 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3756 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3757 }
3758
3759void
3760unpatch_pp_sselect ()
3761 CODE:
3762 if (coro_old_pp_sselect)
3763 {
3764 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3765 coro_old_pp_sselect = 0;
3766 }
3767
3768

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