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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.387 by root, Mon Feb 21 13:38:04 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
13#include <stdio.h> 18#include <stdio.h>
14#include <errno.h> 19#include <errno.h>
15#include <assert.h> 20#include <assert.h>
21
22#ifndef SVs_PADSTALE
23# define SVs_PADSTALE 0
24#endif
16 25
17#ifdef WIN32 26#ifdef WIN32
18# undef setjmp 27# undef setjmp
19# undef longjmp 28# undef longjmp
20# undef _exit 29# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 30# define setjmp _setjmp /* deep magic */
22#else 31#else
23# include <inttypes.h> /* most portable stdint.h */ 32# include <inttypes.h> /* most portable stdint.h */
24#endif 33#endif
25 34
26#ifdef HAVE_MMAP 35#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 55# define BOOT_PAGESIZE (void)0
47#endif 56#endif
48 57
49#if CORO_USE_VALGRIND 58#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 59# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 60#endif
55 61
56/* the maximum number of idle cctx that will be pooled */ 62/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 63static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108 64
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 65#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 66# undef CORO_STACKGUARD
111#endif 67#endif
112 68
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 75# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 76#endif
121 77
122/* The next macros try to return the current stack pointer, in an as 78/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 79 * portable way as possible. */
80#if __GNUC__ >= 4
81# define dSTACKLEVEL int stacklevel_dummy
82# define STACKLEVEL __builtin_frame_address (0)
83#else
124#define dSTACKLEVEL volatile char stacklevel 84# define dSTACKLEVEL volatile void *stacklevel
125#define STACKLEVEL ((void *)&stacklevel) 85# define STACKLEVEL ((void *)&stacklevel)
86#endif
126 87
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 88#define IN_DESTRUCT PL_dirty
128 89
129#if __GNUC__ >= 3 90#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x) 91# define attribute(x) __attribute__(x)
131# define BARRIER __asm__ __volatile__ ("" : : : "memory")
132# define expect(expr,value) __builtin_expect ((expr),(value)) 92# define expect(expr,value) __builtin_expect ((expr), (value))
93# define INLINE static inline
133#else 94#else
134# define attribute(x) 95# define attribute(x)
135# define BARRIER
136# define expect(expr,value) (expr) 96# define expect(expr,value) (expr)
97# define INLINE static
137#endif 98#endif
138 99
139#define expect_false(expr) expect ((expr) != 0, 0) 100#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1) 101#define expect_true(expr) expect ((expr) != 0, 1)
141 102
142#define NOINLINE attribute ((noinline)) 103#define NOINLINE attribute ((noinline))
143 104
144#include "CoroAPI.h" 105#include "CoroAPI.h"
106#define GCoroAPI (&coroapi) /* very sneaky */
145 107
146#ifdef USE_ITHREADS 108#ifdef USE_ITHREADS
147static perl_mutex coro_mutex; 109# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 110static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 111# endif
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 112#endif
154 113
155/* helper storage struct for Coro::AIO */ 114#ifdef __linux
156struct io_state 115# include <time.h> /* for timespec */
157{ 116# include <syscall.h> /* for SYS_* */
158 AV *res; 117# ifdef SYS_clock_gettime
159 int errorno; 118# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
160 I32 laststype; 119# define CORO_CLOCK_MONOTONIC 1
161 int laststatval; 120# define CORO_CLOCK_THREAD_CPUTIME_ID 3
162 Stat_t statcache; 121# endif
163}; 122#endif
164 123
165static double (*nvtime)(); /* so why doesn't it take void? */ 124static double (*nvtime)(); /* so why doesn't it take void? */
125static void (*u2time)(pTHX_ UV ret[2]);
166 126
127/* we hijack an hopefully unused CV flag for our purposes */
128#define CVf_SLF 0x4000
129static OP *pp_slf (pTHX);
130
131static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 132static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 133static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 134static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 135static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 136static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 137static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 138
139static AV *av_destroy; /* destruction queue */
140static SV *sv_manager; /* the manager coro */
141static SV *sv_idle; /* $Coro::idle */
142
174static GV *irsgv; /* $/ */ 143static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 144static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 145static SV *rv_diehook;
177static SV *rv_warnhook; 146static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 147static HV *hv_sig; /* %SIG */
179 148
180/* async_pool helper stuff */ 149/* async_pool helper stuff */
181static SV *sv_pool_rss; 150static SV *sv_pool_rss;
182static SV *sv_pool_size; 151static SV *sv_pool_size;
152static SV *sv_async_pool_idle; /* description string */
183static AV *av_async_pool; 153static AV *av_async_pool; /* idle pool */
154static SV *sv_Coro; /* class string */
155static CV *cv_pool_handler;
184 156
185/* Coro::AnyEvent */ 157/* Coro::AnyEvent */
186static SV *sv_activity; 158static SV *sv_activity;
159
160/* enable processtime/realtime profiling */
161static char enable_times;
162typedef U32 coro_ts[2];
163static coro_ts time_real, time_cpu;
164static char times_valid;
187 165
188static struct coro_cctx *cctx_first; 166static struct coro_cctx *cctx_first;
189static int cctx_count, cctx_idle; 167static int cctx_count, cctx_idle;
190 168
191enum { 169enum {
… …
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 174 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 175 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 176};
199 177
200/* this is a structure representing a c-level coroutine */ 178/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 179typedef struct coro_cctx
180{
202 struct coro_cctx *next; 181 struct coro_cctx *next;
203 182
204 /* the stack */ 183 /* the stack */
205 void *sptr; 184 void *sptr;
206 size_t ssize; 185 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 188 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 189 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 190 JMPENV *top_env;
212 coro_context cctx; 191 coro_context cctx;
213 192
193 U32 gen;
214#if CORO_USE_VALGRIND 194#if CORO_USE_VALGRIND
215 int valgrind_id; 195 int valgrind_id;
216#endif 196#endif
217 unsigned char flags; 197 unsigned char flags;
218} coro_cctx; 198} coro_cctx;
219 199
200coro_cctx *cctx_current; /* the currently running cctx */
201
202/*****************************************************************************/
203
220enum { 204enum {
221 CF_RUNNING = 0x0001, /* coroutine is running */ 205 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 206 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 207 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 208 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
209 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
225}; 210};
226 211
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 212/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 213typedef struct
214{
229 SV *defsv; 215 SV *defsv;
230 AV *defav; 216 AV *defav;
231 SV *errsv; 217 SV *errsv;
232 SV *irsgv; 218 SV *irsgv;
219 HV *hinthv;
233#define VAR(name,type) type name; 220#define VAR(name,type) type name;
234# include "state.h" 221# include "state.h"
235#undef VAR 222#undef VAR
236} perl_slots; 223} perl_slots;
237 224
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 225#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 226
240/* this is a structure representing a perl-level coroutine */ 227/* this is a structure representing a perl-level coroutine */
241struct coro { 228struct coro {
242 /* the c coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 230 coro_cctx *cctx;
244 231
245 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
236 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 237 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
248 239
240 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */ 242 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 243 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 244 HV *hv; /* the perl hash associated with this coro, if any */
245 void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
253 246
254 /* statistics */ 247 /* statistics */
255 int usecount; /* number of transfers to this coro */ 248 int usecount; /* number of transfers to this coro */
256 249
257 /* coro process data */ 250 /* coro process data */
258 int prio; 251 int prio;
259 SV *throw; /* exception to be thrown */ 252 SV *except; /* exception to be thrown */
253 SV *rouse_cb;
260 254
261 /* async_pool */ 255 /* async_pool */
262 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
263 269
264 /* linked list */ 270 /* linked list */
265 struct coro *next, *prev; 271 struct coro *next, *prev;
266}; 272};
267 273
268typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
270 276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the mainr easonw e don't support windows process emulation */
280static struct CoroSLF slf_frame; /* the current slf frame */
281
271/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
272 283
273#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
274#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
275#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
276#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
277#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
278#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
279 290
280/* for Coro.pm */ 291/* for Coro.pm */
281static SV *coro_current; 292static SV *coro_current;
282static SV *coro_readyhook; 293static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static int coro_nready; 295static CV *cv_coro_run, *cv_coro_terminate;
285static struct coro *coro_first; 296static struct coro *coro_first;
297#define coro_nready coroapi.nready
298
299/** Coro::Select ************************************************************/
300
301static OP *(*coro_old_pp_sselect) (pTHX);
302static SV *coro_select_select;
303
304/* horrible hack, but if it works... */
305static OP *
306coro_pp_sselect (pTHX)
307{
308 dSP;
309 PUSHMARK (SP - 4); /* fake argument list */
310 XPUSHs (coro_select_select);
311 PUTBACK;
312
313 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
314 PL_op->op_flags |= OPf_STACKED;
315 PL_op->op_private = 0;
316 return PL_ppaddr [OP_ENTERSUB](aTHX);
317}
318
319/** time stuff **************************************************************/
320
321#ifdef HAS_GETTIMEOFDAY
322
323static void
324coro_u2time (pTHX_ UV ret[2])
325{
326 struct timeval tv;
327 gettimeofday (&tv, 0);
328
329 ret [0] = tv.tv_sec;
330 ret [1] = tv.tv_usec;
331}
332
333static double
334coro_nvtime ()
335{
336 struct timeval tv;
337 gettimeofday (&tv, 0);
338
339 return tv.tv_sec + tv.tv_usec * 1e-6;
340}
341
342static void
343time_init (void)
344{
345 nvtime = coro_nvtime;
346 u2time = coro_u2time;
347}
348
349#else
350
351static void
352time_init (void)
353{
354 SV **svp;
355
356 require_pv ("Time::HiRes");
357
358 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
359
360 if (!svp) croak ("Time::HiRes is required");
361 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
362
363 nvtime = INT2PTR (double (*)(), SvIV (*svp));
364
365 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
366 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
367}
368
369#endif
286 370
287/** lowlevel stuff **********************************************************/ 371/** lowlevel stuff **********************************************************/
288 372
289static SV * 373static SV *
290coro_get_sv (pTHX_ const char *name, int create) 374coro_get_sv (pTHX_ const char *name, int create)
… …
314 get_hv (name, create); 398 get_hv (name, create);
315#endif 399#endif
316 return get_hv (name, create); 400 return get_hv (name, create);
317} 401}
318 402
403INLINE void
404coro_times_update ()
405{
406#ifdef coro_clock_gettime
407 struct timespec ts;
408
409 ts.tv_sec = ts.tv_nsec = 0;
410 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
411 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
412
413 ts.tv_sec = ts.tv_nsec = 0;
414 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
415 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
416#else
417 dTHX;
418 UV tv[2];
419
420 u2time (aTHX_ tv);
421 time_real [0] = tv [0];
422 time_real [1] = tv [1] * 1000;
423#endif
424}
425
426INLINE void
427coro_times_add (struct coro *c)
428{
429 c->t_real [1] += time_real [1];
430 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
431 c->t_real [0] += time_real [0];
432
433 c->t_cpu [1] += time_cpu [1];
434 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
435 c->t_cpu [0] += time_cpu [0];
436}
437
438INLINE void
439coro_times_sub (struct coro *c)
440{
441 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
442 c->t_real [1] -= time_real [1];
443 c->t_real [0] -= time_real [0];
444
445 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
446 c->t_cpu [1] -= time_cpu [1];
447 c->t_cpu [0] -= time_cpu [0];
448}
449
450/*****************************************************************************/
451/* magic glue */
452
453#define CORO_MAGIC_type_cv 26
454#define CORO_MAGIC_type_state PERL_MAGIC_ext
455
456#define CORO_MAGIC_NN(sv, type) \
457 (expect_true (SvMAGIC (sv)->mg_type == type) \
458 ? SvMAGIC (sv) \
459 : mg_find (sv, type))
460
461#define CORO_MAGIC(sv, type) \
462 (expect_true (SvMAGIC (sv)) \
463 ? CORO_MAGIC_NN (sv, type) \
464 : 0)
465
466#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
467#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
468
469INLINE struct coro *
470SvSTATE_ (pTHX_ SV *coro)
471{
472 HV *stash;
473 MAGIC *mg;
474
475 if (SvROK (coro))
476 coro = SvRV (coro);
477
478 if (expect_false (SvTYPE (coro) != SVt_PVHV))
479 croak ("Coro::State object required");
480
481 stash = SvSTASH (coro);
482 if (expect_false (stash != coro_stash && stash != coro_state_stash))
483 {
484 /* very slow, but rare, check */
485 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
486 croak ("Coro::State object required");
487 }
488
489 mg = CORO_MAGIC_state (coro);
490 return (struct coro *)mg->mg_ptr;
491}
492
493#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
494
495/* faster than SvSTATE, but expects a coroutine hv */
496#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
497#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
498
499/*****************************************************************************/
500/* padlist management and caching */
501
319static AV * 502static AV *
320coro_clone_padlist (pTHX_ CV *cv) 503coro_derive_padlist (pTHX_ CV *cv)
321{ 504{
322 AV *padlist = CvPADLIST (cv); 505 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 506 AV *newpadlist, *newpad;
324 507
325 newpadlist = newAV (); 508 newpadlist = newAV ();
… …
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 513 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
331#endif 514#endif
332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 515 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
333 --AvFILLp (padlist); 516 --AvFILLp (padlist);
334 517
335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 518 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
336 av_store (newpadlist, 1, (SV *)newpad); 519 av_store (newpadlist, 1, (SV *)newpad);
337 520
338 return newpadlist; 521 return newpadlist;
339} 522}
340 523
341static void 524static void
342free_padlist (pTHX_ AV *padlist) 525free_padlist (pTHX_ AV *padlist)
343{ 526{
344 /* may be during global destruction */ 527 /* may be during global destruction */
345 if (SvREFCNT (padlist)) 528 if (!IN_DESTRUCT)
346 { 529 {
347 I32 i = AvFILLp (padlist); 530 I32 i = AvFILLp (padlist);
348 while (i >= 0) 531
532 while (i > 0) /* special-case index 0 */
349 { 533 {
350 SV **svp = av_fetch (padlist, i--, FALSE); 534 /* we try to be extra-careful here */
351 if (svp) 535 AV *av = (AV *)AvARRAY (padlist)[i--];
352 { 536 I32 j = AvFILLp (av);
353 SV *sv; 537
354 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 538 while (j >= 0)
539 SvREFCNT_dec (AvARRAY (av)[j--]);
540
541 AvFILLp (av) = -1;
355 SvREFCNT_dec (sv); 542 SvREFCNT_dec (av);
356
357 SvREFCNT_dec (*svp);
358 }
359 } 543 }
360 544
545 SvREFCNT_dec (AvARRAY (padlist)[0]);
546
547 AvFILLp (padlist) = -1;
361 SvREFCNT_dec ((SV*)padlist); 548 SvREFCNT_dec ((SV*)padlist);
362 } 549 }
363} 550}
364 551
365static int 552static int
366coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 553coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
367{ 554{
368 AV *padlist; 555 AV *padlist;
369 AV *av = (AV *)mg->mg_obj; 556 AV *av = (AV *)mg->mg_obj;
557
558 /* perl manages to free our internal AV and _then_ call us */
559 if (IN_DESTRUCT)
560 return 0;
370 561
371 /* casting is fun. */ 562 /* casting is fun. */
372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 563 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
373 free_padlist (aTHX_ padlist); 564 free_padlist (aTHX_ padlist);
374 565
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 566 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 567
377 return 0; 568 return 0;
378} 569}
379
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 570
383static MGVTBL coro_cv_vtbl = { 571static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 572 0, 0, 0, 0,
385 coro_cv_free 573 coro_cv_free
386}; 574};
387
388#define CORO_MAGIC(sv,type) \
389 SvMAGIC (sv) \
390 ? SvMAGIC (sv)->mg_type == type \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
423 575
424/* the next two functions merely cache the padlists */ 576/* the next two functions merely cache the padlists */
425static void 577static void
426get_padlist (pTHX_ CV *cv) 578get_padlist (pTHX_ CV *cv)
427{ 579{
… …
433 else 585 else
434 { 586 {
435#if CORO_PREFER_PERL_FUNCTIONS 587#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 588 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 589 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 590 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 591 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 592 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 593 SvREFCNT_dec (cp);
442#else 594#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 595 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 596#endif
445 } 597 }
446} 598}
447 599
448static void 600static void
… …
455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 607 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
456 608
457 av = (AV *)mg->mg_obj; 609 av = (AV *)mg->mg_obj;
458 610
459 if (expect_false (AvFILLp (av) >= AvMAX (av))) 611 if (expect_false (AvFILLp (av) >= AvMAX (av)))
460 av_extend (av, AvMAX (av) + 1); 612 av_extend (av, AvFILLp (av) + 1);
461 613
462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 614 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
463} 615}
464 616
465/** load & save, init *******************************************************/ 617/** load & save, init *******************************************************/
618
619/* swap sv heads, at least logically */
620static void
621swap_svs (pTHX_ Coro__State c)
622{
623 int i;
624
625 for (i = 0; i <= AvFILLp (c->swap_sv); )
626 {
627 SV *a = AvARRAY (c->swap_sv)[i++];
628 SV *b = AvARRAY (c->swap_sv)[i++];
629
630 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
631 SV tmp;
632
633 /* swap sv_any */
634 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
635
636 /* swap sv_flags */
637 SvFLAGS (&tmp) = SvFLAGS (a);
638 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
639 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
640
641#if PERL_VERSION_ATLEAST (5,10,0)
642 /* perl 5.10 complicates this _quite_ a bit, but it also is
643 * much faster, so no quarrels here. alternatively, we could
644 * sv_upgrade to avoid this.
645 */
646 {
647 /* swap sv_u */
648 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
649
650 /* if SvANY points to the head, we need to adjust the pointers,
651 * as the pointer for a still points to b, and maybe vice versa.
652 */
653 #define svany_in_head(type) \
654 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
655
656 if (svany_in_head (SvTYPE (a)))
657 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
658
659 if (svany_in_head (SvTYPE (b)))
660 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
661 }
662#endif
663 }
664}
665
666#define SWAP_SVS(coro) \
667 if (expect_false ((coro)->swap_sv)) \
668 swap_svs (aTHX_ (coro))
669
670static void
671on_enterleave_call (pTHX_ SV *cb);
466 672
467static void 673static void
468load_perl (pTHX_ Coro__State c) 674load_perl (pTHX_ Coro__State c)
469{ 675{
470 perl_slots *slot = c->slot; 676 perl_slots *slot = c->slot;
471 c->slot = 0; 677 c->slot = 0;
472 678
473 PL_mainstack = c->mainstack; 679 PL_mainstack = c->mainstack;
474 680
475 GvSV (PL_defgv) = slot->defsv; 681 GvSV (PL_defgv) = slot->defsv;
476 GvAV (PL_defgv) = slot->defav; 682 GvAV (PL_defgv) = slot->defav;
477 GvSV (PL_errgv) = slot->errsv; 683 GvSV (PL_errgv) = slot->errsv;
478 GvSV (irsgv) = slot->irsgv; 684 GvSV (irsgv) = slot->irsgv;
685 GvHV (PL_hintgv) = slot->hinthv;
479 686
480 #define VAR(name,type) PL_ ## name = slot->name; 687 #define VAR(name,type) PL_ ## name = slot->name;
481 # include "state.h" 688 # include "state.h"
482 #undef VAR 689 #undef VAR
483 690
… …
494 CvPADLIST (cv) = (AV *)POPs; 701 CvPADLIST (cv) = (AV *)POPs;
495 } 702 }
496 703
497 PUTBACK; 704 PUTBACK;
498 } 705 }
706
707 slf_frame = c->slf_frame;
708 CORO_THROW = c->except;
709
710 if (expect_false (enable_times))
711 {
712 if (expect_false (!times_valid))
713 coro_times_update ();
714
715 coro_times_sub (c);
716 }
717
718 if (expect_false (c->on_enter))
719 {
720 int i;
721
722 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
723 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
724 }
725
726 SWAP_SVS (c);
499} 727}
500 728
501static void 729static void
502save_perl (pTHX_ Coro__State c) 730save_perl (pTHX_ Coro__State c)
503{ 731{
732 SWAP_SVS (c);
733
734 if (expect_false (c->on_leave))
735 {
736 int i;
737
738 for (i = AvFILLp (c->on_leave); i >= 0; --i)
739 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
740 }
741
742 times_valid = 0;
743
744 if (expect_false (enable_times))
745 {
746 coro_times_update (); times_valid = 1;
747 coro_times_add (c);
748 }
749
750 c->except = CORO_THROW;
751 c->slf_frame = slf_frame;
752
504 { 753 {
505 dSP; 754 dSP;
506 I32 cxix = cxstack_ix; 755 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 756 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 757 PERL_SI *top_si = PL_curstackinfo;
… …
518 { 767 {
519 while (expect_true (cxix >= 0)) 768 while (expect_true (cxix >= 0))
520 { 769 {
521 PERL_CONTEXT *cx = &ccstk[cxix--]; 770 PERL_CONTEXT *cx = &ccstk[cxix--];
522 771
523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 772 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
524 { 773 {
525 CV *cv = cx->blk_sub.cv; 774 CV *cv = cx->blk_sub.cv;
526 775
527 if (expect_true (CvDEPTH (cv))) 776 if (expect_true (CvDEPTH (cv)))
528 { 777 {
… …
552 /* we manually unroll here, as usually 2 slots is enough */ 801 /* we manually unroll here, as usually 2 slots is enough */
553 if (SLOT_COUNT >= 1) CXINC; 802 if (SLOT_COUNT >= 1) CXINC;
554 if (SLOT_COUNT >= 2) CXINC; 803 if (SLOT_COUNT >= 2) CXINC;
555 if (SLOT_COUNT >= 3) CXINC; 804 if (SLOT_COUNT >= 3) CXINC;
556 { 805 {
557 int i; 806 unsigned int i;
558 for (i = 3; i < SLOT_COUNT; ++i) 807 for (i = 3; i < SLOT_COUNT; ++i)
559 CXINC; 808 CXINC;
560 } 809 }
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 810 cxstack_ix -= SLOT_COUNT; /* undo allocation */
562 811
563 c->mainstack = PL_mainstack; 812 c->mainstack = PL_mainstack;
564 813
565 { 814 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 815 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 816
568 slot->defav = GvAV (PL_defgv); 817 slot->defav = GvAV (PL_defgv);
569 slot->defsv = DEFSV; 818 slot->defsv = DEFSV;
570 slot->errsv = ERRSV; 819 slot->errsv = ERRSV;
571 slot->irsgv = GvSV (irsgv); 820 slot->irsgv = GvSV (irsgv);
821 slot->hinthv = GvHV (PL_hintgv);
572 822
573 #define VAR(name,type) slot->name = PL_ ## name; 823 #define VAR(name,type) slot->name = PL_ ## name;
574 # include "state.h" 824 # include "state.h"
575 #undef VAR 825 #undef VAR
576 } 826 }
577} 827}
578 828
579/* 829/*
580 * allocate various perl stacks. This is an exact copy 830 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 831 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 832 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 833 * not usually need a lot of stackspace.
584 */ 834 */
585#if CORO_PREFER_PERL_FUNCTIONS 835#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 836# define coro_init_stacks(thx) init_stacks ()
587#else 837#else
588static void 838static void
589coro_init_stacks (pTHX) 839coro_init_stacks (pTHX)
590{ 840{
591 PL_curstackinfo = new_stackinfo(32, 8); 841 PL_curstackinfo = new_stackinfo(32, 8);
… …
628 878
629/* 879/*
630 * destroy the stacks, the callchain etc... 880 * destroy the stacks, the callchain etc...
631 */ 881 */
632static void 882static void
633coro_destroy_stacks (pTHX) 883coro_destruct_stacks (pTHX)
634{ 884{
635 while (PL_curstackinfo->si_next) 885 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 886 PL_curstackinfo = PL_curstackinfo->si_next;
637 887
638 while (PL_curstackinfo) 888 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 904#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 905 Safefree (PL_retstack);
656#endif 906#endif
657} 907}
658 908
909#define CORO_RSS \
910 rss += sizeof (SYM (curstackinfo)); \
911 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
912 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
913 rss += SYM (tmps_max) * sizeof (SV *); \
914 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
915 rss += SYM (scopestack_max) * sizeof (I32); \
916 rss += SYM (savestack_max) * sizeof (ANY);
917
659static size_t 918static size_t
660coro_rss (pTHX_ struct coro *coro) 919coro_rss (pTHX_ struct coro *coro)
661{ 920{
662 size_t rss = sizeof (*coro); 921 size_t rss = sizeof (*coro);
663 922
664 if (coro->mainstack) 923 if (coro->mainstack)
665 { 924 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 925 if (coro->flags & CF_RUNNING)
670 { 926 {
671 slot = &tmp_slot; 927 #define SYM(sym) PL_ ## sym
672 928 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 929 #undef SYM
676 } 930 }
677 else 931 else
678 slot = coro->slot;
679
680 if (slot)
681 { 932 {
682 rss += sizeof (slot->curstackinfo); 933 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 934 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 935 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 936 }
694 } 937 }
695 938
696 return rss; 939 return rss;
697} 940}
… …
710#endif 953#endif
711 954
712/* 955/*
713 * This overrides the default magic get method of %SIG elements. 956 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 957 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide 958 * and instead of trying to save and restore the hash elements, we just provide
716 * readback here. 959 * readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */ 960 */
721static int 961static int
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 962coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{ 963{
724 const char *s = MgPV_nolen_const (mg); 964 const char *s = MgPV_nolen_const (mg);
… …
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1017 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778 1018
779 if (svp) 1019 if (svp)
780 { 1020 {
781 SV *old = *svp; 1021 SV *old = *svp;
782 *svp = newSVsv (sv); 1022 *svp = SvOK (sv) ? newSVsv (sv) : 0;
783 SvREFCNT_dec (old); 1023 SvREFCNT_dec (old);
784 return 0; 1024 return 0;
785 } 1025 }
786 } 1026 }
787 1027
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1028 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 1029}
790 1030
791static void 1031static void
1032prepare_nop (pTHX_ struct coro_transfer_args *ta)
1033{
1034 /* kind of mega-hacky, but works */
1035 ta->next = ta->prev = (struct coro *)ta;
1036}
1037
1038static int
1039slf_check_nop (pTHX_ struct CoroSLF *frame)
1040{
1041 return 0;
1042}
1043
1044static int
1045slf_check_repeat (pTHX_ struct CoroSLF *frame)
1046{
1047 return 1;
1048}
1049
1050static UNOP init_perl_op;
1051
1052static void NOINLINE /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 1053init_perl (pTHX_ struct coro *coro)
793{ 1054{
794 /* 1055 /*
795 * emulate part of the perl startup here. 1056 * emulate part of the perl startup here.
796 */ 1057 */
797 coro_init_stacks (aTHX); 1058 coro_init_stacks (aTHX);
798 1059
799 PL_runops = RUNOPS_DEFAULT; 1060 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 1061 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 1062 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 1063 PL_comppad = 0;
1064 PL_comppad_name = 0;
1065 PL_comppad_name_fill = 0;
1066 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 1067 PL_curpm = 0;
804 PL_curpad = 0; 1068 PL_curpad = 0;
805 PL_localizing = 0; 1069 PL_localizing = 0;
806 PL_dirty = 0;
807 PL_restartop = 0; 1070 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 1071#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 1072 PL_parser = 0;
810#endif 1073#endif
1074 PL_hints = 0;
811 1075
812 /* recreate the die/warn hooks */ 1076 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1077 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1078 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
815 1079
816 GvSV (PL_defgv) = newSV (0); 1080 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 1081 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 1082 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1083 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1084 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 1085 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1086 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 1087
823 { 1088 {
824 dSP; 1089 dSP;
825 LOGOP myop; 1090 UNOP myop;
826 1091
827 Zero (&myop, 1, LOGOP); 1092 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 1093 myop.op_next = Nullop;
1094 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 1095 myop.op_flags = OPf_WANT_VOID;
830 1096
831 PUSHMARK (SP); 1097 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1098 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 1099 PUTBACK;
834 PL_op = (OP *)&myop; 1100 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1101 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 1102 }
838 1103
839 /* this newly created coroutine might be run on an existing cctx which most 1104 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 1105 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 1106 */
844 ENTER; 1107 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 1108 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
846 1109
1110 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1111 init_perl_op.op_next = PL_op;
1112 init_perl_op.op_type = OP_ENTERSUB;
1113 init_perl_op.op_ppaddr = pp_slf;
1114 /* no flags etc. required, as an init function won't be called */
1115
1116 PL_op = (OP *)&init_perl_op;
1117
1118 /* copy throw, in case it was set before init_perl */
1119 CORO_THROW = coro->except;
1120
1121 SWAP_SVS (coro);
1122
1123 if (expect_false (enable_times))
1124 {
1125 coro_times_update ();
1126 coro_times_sub (coro);
1127 }
1128}
1129
847static void 1130static void
848coro_destroy (pTHX_ struct coro *coro) 1131coro_unwind_stacks (pTHX)
849{ 1132{
850 if (!IN_DESTRUCT) 1133 if (!IN_DESTRUCT)
851 { 1134 {
852 /* restore all saved variables and stuff */ 1135 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 1136 LEAVE_SCOPE (0);
… …
861 POPSTACK_TO (PL_mainstack); 1144 POPSTACK_TO (PL_mainstack);
862 1145
863 /* unwind main stack */ 1146 /* unwind main stack */
864 dounwind (-1); 1147 dounwind (-1);
865 } 1148 }
1149}
866 1150
867 SvREFCNT_dec (GvSV (PL_defgv)); 1151static void
868 SvREFCNT_dec (GvAV (PL_defgv)); 1152destroy_perl (pTHX_ struct coro *coro)
869 SvREFCNT_dec (GvSV (PL_errgv)); 1153{
870 SvREFCNT_dec (PL_defoutgv); 1154 SV *svf [9];
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873 1155
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876 1156 {
1157 struct coro *current = SvSTATE_current;
1158
1159 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1160
1161 save_perl (aTHX_ current);
1162 load_perl (aTHX_ coro);
1163
1164 coro_unwind_stacks (aTHX);
1165 coro_destruct_stacks (aTHX);
1166
1167 /* restore swapped sv's */
1168 SWAP_SVS (coro);
1169
1170 // now save some sv's to be free'd later
1171 svf [0] = GvSV (PL_defgv);
1172 svf [1] = (SV *)GvAV (PL_defgv);
1173 svf [2] = GvSV (PL_errgv);
1174 svf [3] = (SV *)PL_defoutgv;
1175 svf [4] = PL_rs;
1176 svf [5] = GvSV (irsgv);
1177 svf [6] = (SV *)GvHV (PL_hintgv);
1178 svf [7] = PL_diehook;
1179 svf [8] = PL_warnhook;
1180 assert (9 == sizeof (svf) / sizeof (*svf));
1181
1182 load_perl (aTHX_ current);
1183 }
1184
1185 {
1186 unsigned int i;
1187
1188 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1189 SvREFCNT_dec (svf [i]);
1190
877 SvREFCNT_dec (coro->saved_deffh); 1191 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 1192 SvREFCNT_dec (coro->rouse_cb);
879 1193 SvREFCNT_dec (coro->invoke_cb);
880 coro_destroy_stacks (aTHX); 1194 SvREFCNT_dec (coro->invoke_av);
1195 }
881} 1196}
882 1197
883static void 1198INLINE void
884free_coro_mortal (pTHX) 1199free_coro_mortal (pTHX)
885{ 1200{
886 if (expect_true (coro_mortal)) 1201 if (expect_true (coro_mortal))
887 { 1202 {
888 SvREFCNT_dec (coro_mortal); 1203 SvREFCNT_dec (coro_mortal);
… …
893static int 1208static int
894runops_trace (pTHX) 1209runops_trace (pTHX)
895{ 1210{
896 COP *oldcop = 0; 1211 COP *oldcop = 0;
897 int oldcxix = -2; 1212 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 1213
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1214 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 1215 {
903 PERL_ASYNC_CHECK (); 1216 PERL_ASYNC_CHECK ();
904 1217
905 if (cctx->flags & CC_TRACE_ALL) 1218 if (cctx_current->flags & CC_TRACE_ALL)
906 { 1219 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1220 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 1221 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1222 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 1223 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 1224 AV *av = newAV (); /* return values */
912 SV **cb; 1225 SV **cb;
… …
949 1262
950 if (PL_curcop != &PL_compiling) 1263 if (PL_curcop != &PL_compiling)
951 { 1264 {
952 SV **cb; 1265 SV **cb;
953 1266
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1267 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1268 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1269 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1270
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1271 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1272 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1273 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1274 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1275 SV *fullname = sv_2mortal (newSV (0));
964 1276
965 if (isGV (gv)) 1277 if (isGV (gv))
… …
970 SAVETMPS; 1282 SAVETMPS;
971 EXTEND (SP, 3); 1283 EXTEND (SP, 3);
972 PUSHMARK (SP); 1284 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1285 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1286 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1287 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1288 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1289 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1290 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1291 SPAGAIN;
980 FREETMPS; 1292 FREETMPS;
… …
983 } 1295 }
984 1296
985 oldcxix = cxstack_ix; 1297 oldcxix = cxstack_ix;
986 } 1298 }
987 1299
988 if (cctx->flags & CC_TRACE_LINE) 1300 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1301 {
990 dSP; 1302 dSP;
991 1303
992 PL_runops = RUNOPS_DEFAULT; 1304 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1305 ENTER;
… …
1012 1324
1013 TAINT_NOT; 1325 TAINT_NOT;
1014 return 0; 1326 return 0;
1015} 1327}
1016 1328
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1329static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */ 1330
1019/* during execution of a perl program */ 1331static void
1332slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1333{
1334 ta->prev = 0;
1335}
1336
1337static int
1338slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1339{
1340 *frame = cctx_ssl_frame;
1341
1342 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1343}
1344
1345/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1020static void NOINLINE 1346static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx) 1347cctx_prepare (pTHX)
1022{ 1348{
1023 dSP;
1024 LOGOP myop;
1025
1026 PL_top_env = &PL_start_env; 1349 PL_top_env = &PL_start_env;
1027 1350
1028 if (cctx->flags & CC_TRACE) 1351 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1352 PL_runops = runops_trace;
1030 1353
1031 Zero (&myop, 1, LOGOP); 1354 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1355 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1356 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1357 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1358
1035 PUSHMARK (SP); 1359 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1360 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1361
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1362 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1363 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1364}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1365
1042 SPAGAIN; 1366/* the tail of transfer: execute stuff we can only do after a transfer */
1367INLINE void
1368transfer_tail (pTHX)
1369{
1370 free_coro_mortal (aTHX);
1043} 1371}
1044 1372
1045/* 1373/*
1046 * this is a _very_ stripped down perl interpreter ;) 1374 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1375 */
1048static void 1376static void
1049cctx_run (void *arg) 1377cctx_run (void *arg)
1050{ 1378{
1379#ifdef USE_ITHREADS
1380# if CORO_PTHREAD
1381 PERL_SET_CONTEXT (coro_thx);
1382# endif
1383#endif
1384 {
1051 dTHX; 1385 dTHX;
1052 1386
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1387 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1388 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1389 /* PL_nop = PL_nop->op_next */
1058 1390
1059 /* inject a fake subroutine call to cctx_init */ 1391 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1392 cctx_prepare (aTHX);
1061 1393
1394 /* cctx_run is the alternative tail of transfer() */
1395 transfer_tail (aTHX);
1396
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1397 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1398 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1399 perl_run (PL_curinterp);
1065
1066 /* 1400 /*
1401 * Unfortunately, there is no way to get at the return values of the
1402 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1403 * runtime errors here, as this is just a random interpreter, not a thread.
1404 */
1405
1406 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1407 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1408 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1409 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1410 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1411 * coroutine as Coro has no such concept.
1412 * This actually isn't valid with the pthread backend, but OSes requiring
1413 * that backend are too broken to do it in a standards-compliant way.
1072 */ 1414 */
1073 PL_top_env = main_top_env; 1415 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1416 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1417 }
1075} 1418}
1076 1419
1077static coro_cctx * 1420static coro_cctx *
1078cctx_new () 1421cctx_new ()
1079{ 1422{
1080 coro_cctx *cctx; 1423 coro_cctx *cctx;
1424
1425 ++cctx_count;
1426 New (0, cctx, 1, coro_cctx);
1427
1428 cctx->gen = cctx_gen;
1429 cctx->flags = 0;
1430 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1431
1432 return cctx;
1433}
1434
1435/* create a new cctx only suitable as source */
1436static coro_cctx *
1437cctx_new_empty ()
1438{
1439 coro_cctx *cctx = cctx_new ();
1440
1441 cctx->sptr = 0;
1442 coro_create (&cctx->cctx, 0, 0, 0, 0);
1443
1444 return cctx;
1445}
1446
1447/* create a new cctx suitable as destination/running a perl interpreter */
1448static coro_cctx *
1449cctx_new_run ()
1450{
1451 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1452 void *stack_start;
1082 size_t stack_size; 1453 size_t stack_size;
1083 1454
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1455#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1456 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1457 /* mmap supposedly does allocate-on-write for us */
1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1458 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1459
1093 if (cctx->sptr != (void *)-1) 1460 if (cctx->sptr != (void *)-1)
1094 { 1461 {
1095# if CORO_STACKGUARD 1462 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1463 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1464 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1465 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1466 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1467 cctx->flags |= CC_MAPPED;
1101 } 1468 }
1102 else 1469 else
1103#endif 1470#endif
1104 { 1471 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1472 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1473 New (0, cctx->sptr, cctx_stacksize, long);
1107 1474
1108 if (!cctx->sptr) 1475 if (!cctx->sptr)
1109 { 1476 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1477 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1478 _exit (EXIT_FAILURE);
1112 } 1479 }
1113 1480
1114 stack_start = cctx->sptr; 1481 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1482 stack_size = cctx->ssize;
1116 } 1483 }
1117 1484
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1485 #if CORO_USE_VALGRIND
1486 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1487 #endif
1488
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1489 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1490
1121 return cctx; 1491 return cctx;
1122} 1492}
1123 1493
… …
1125cctx_destroy (coro_cctx *cctx) 1495cctx_destroy (coro_cctx *cctx)
1126{ 1496{
1127 if (!cctx) 1497 if (!cctx)
1128 return; 1498 return;
1129 1499
1500 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1501
1130 --cctx_count; 1502 --cctx_count;
1503 coro_destroy (&cctx->cctx);
1131 1504
1505 /* coro_transfer creates new, empty cctx's */
1506 if (cctx->sptr)
1507 {
1132#if CORO_USE_VALGRIND 1508 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1509 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1510 #endif
1511
1512#if HAVE_MMAP
1513 if (cctx->flags & CC_MAPPED)
1514 munmap (cctx->sptr, cctx->ssize);
1515 else
1134#endif 1516#endif
1135
1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize);
1139 else
1140#endif
1141 Safefree (cctx->sptr); 1517 Safefree (cctx->sptr);
1518 }
1142 1519
1143 Safefree (cctx); 1520 Safefree (cctx);
1144} 1521}
1145 1522
1146/* wether this cctx should be destructed */ 1523/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1524#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1525
1149static coro_cctx * 1526static coro_cctx *
1150cctx_get (pTHX) 1527cctx_get (pTHX)
1151{ 1528{
1152 while (expect_true (cctx_first)) 1529 while (expect_true (cctx_first))
… …
1159 return cctx; 1536 return cctx;
1160 1537
1161 cctx_destroy (cctx); 1538 cctx_destroy (cctx);
1162 } 1539 }
1163 1540
1164 return cctx_new (); 1541 return cctx_new_run ();
1165} 1542}
1166 1543
1167static void 1544static void
1168cctx_put (coro_cctx *cctx) 1545cctx_put (coro_cctx *cctx)
1169{ 1546{
1547 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1548
1170 /* free another cctx if overlimit */ 1549 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1550 if (expect_false (cctx_idle >= cctx_max_idle))
1172 { 1551 {
1173 coro_cctx *first = cctx_first; 1552 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1553 cctx_first = first->next;
1175 --cctx_idle; 1554 --cctx_idle;
1176 1555
… …
1185/** coroutine switching *****************************************************/ 1564/** coroutine switching *****************************************************/
1186 1565
1187static void 1566static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1567transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1568{
1569 /* TODO: throwing up here is considered harmful */
1570
1190 if (expect_true (prev != next)) 1571 if (expect_true (prev != next))
1191 { 1572 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1573 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1574 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1194 1575
1195 if (expect_false (next->flags & CF_RUNNING))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED)) 1576 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1577 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1200 1578
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1579#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1580 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1581 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1582#endif
1205 } 1583 }
1206} 1584}
1207 1585
1208/* always use the TRANSFER macro */ 1586/* always use the TRANSFER macro */
1209static void NOINLINE 1587static void NOINLINE /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1588transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1589{
1212 dSTACKLEVEL; 1590 dSTACKLEVEL;
1213 1591
1214 /* sometimes transfer is only called to set idle_sp */ 1592 /* sometimes transfer is only called to set idle_sp */
1215 if (expect_false (!next)) 1593 if (expect_false (!prev))
1216 { 1594 {
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1595 cctx_current->idle_sp = STACKLEVEL;
1218 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1596 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1219 } 1597 }
1220 else if (expect_true (prev != next)) 1598 else if (expect_true (prev != next))
1221 { 1599 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1600 coro_cctx *cctx_prev;
1224 1601
1225 if (expect_false (prev->flags & CF_NEW)) 1602 if (expect_false (prev->flags & CF_NEW))
1226 { 1603 {
1227 /* create a new empty context */ 1604 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1605 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1606 prev->flags |= CF_RUNNING;
1231 } 1607 }
1232 1608
1233 prev->flags &= ~CF_RUNNING; 1609 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1610 next->flags |= CF_RUNNING;
1235
1236 LOCK;
1237 1611
1238 /* first get rid of the old state */ 1612 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1613 save_perl (aTHX_ prev);
1240 1614
1241 if (expect_false (next->flags & CF_NEW)) 1615 if (expect_false (next->flags & CF_NEW))
1242 { 1616 {
1243 /* need to start coroutine */ 1617 /* need to start coroutine */
1244 next->flags &= ~CF_NEW; 1618 next->flags &= ~CF_NEW;
1245 /* setup coroutine call */ 1619 /* setup coroutine call */
1246 coro_setup (aTHX_ next); 1620 init_perl (aTHX_ next);
1247 } 1621 }
1248 else 1622 else
1249 load_perl (aTHX_ next); 1623 load_perl (aTHX_ next);
1250 1624
1251 prev__cctx = prev->cctx;
1252
1253 /* possibly "free" the cctx */ 1625 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1626 if (expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1627 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1628 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1629 && !force_cctx
1258 )) 1630 ))
1259 { 1631 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1632 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1633 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1634
1263 prev->cctx = 0;
1264
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1635 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1636 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1637 if (expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1638 if (expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1639 next->cctx = cctx_get (aTHX);
1270 1640
1271 cctx_put (prev__cctx); 1641 cctx_put (cctx_current);
1272 } 1642 }
1643 else
1644 prev->cctx = cctx_current;
1273 1645
1274 ++next->usecount; 1646 ++next->usecount;
1275 1647
1276 if (expect_true (!next->cctx)) 1648 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1649 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1650
1279 has_throw = !!next->throw; 1651 next->cctx = 0;
1280 1652
1281 if (expect_false (prev__cctx != next->cctx)) 1653 if (expect_false (cctx_prev != cctx_current))
1282 { 1654 {
1283 prev__cctx->top_env = PL_top_env; 1655 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1656 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1657 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1658 }
1287 1659
1288 free_coro_mortal (aTHX); 1660 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1661 }
1304} 1662}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1663
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1664#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1665#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1666
1314/** high level stuff ********************************************************/ 1667/** high level stuff ********************************************************/
… …
1316static int 1669static int
1317coro_state_destroy (pTHX_ struct coro *coro) 1670coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1671{
1319 if (coro->flags & CF_DESTROYED) 1672 if (coro->flags & CF_DESTROYED)
1320 return 0; 1673 return 0;
1674
1675 if (coro->on_destroy && !PL_dirty)
1676 coro->on_destroy (aTHX_ coro);
1321 1677
1322 coro->flags |= CF_DESTROYED; 1678 coro->flags |= CF_DESTROYED;
1323 1679
1324 if (coro->flags & CF_READY) 1680 if (coro->flags & CF_READY)
1325 { 1681 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1682 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1683 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1684 --coro_nready;
1330 UNLOCK;
1331 } 1685 }
1332 else 1686 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1687 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334 1688
1335 if (coro->mainstack && coro->mainstack != main_mainstack) 1689 if (coro->mainstack
1336 { 1690 && coro->mainstack != main_mainstack
1337 struct coro temp; 1691 && coro->slot
1338 1692 && !PL_dirty)
1339 if (coro->flags & CF_RUNNING)
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341
1342 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro); 1693 destroy_perl (aTHX_ coro);
1344
1345 coro_destroy (aTHX_ coro);
1346
1347 load_perl (aTHX_ &temp);
1348
1349 coro->slot = 0;
1350 }
1351
1352 cctx_destroy (coro->cctx);
1353 SvREFCNT_dec (coro->args);
1354 1694
1355 if (coro->next) coro->next->prev = coro->prev; 1695 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1696 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1697 if (coro == coro_first) coro_first = coro->next;
1698
1699 cctx_destroy (coro->cctx);
1700 SvREFCNT_dec (coro->startcv);
1701 SvREFCNT_dec (coro->args);
1702 SvREFCNT_dec (coro->swap_sv);
1703 SvREFCNT_dec (CORO_THROW);
1358 1704
1359 return 1; 1705 return 1;
1360} 1706}
1361 1707
1362static int 1708static int
… …
1396# define MGf_DUP 0 1742# define MGf_DUP 0
1397#endif 1743#endif
1398}; 1744};
1399 1745
1400static void 1746static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1747prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1748{
1403 ta->prev = SvSTATE (prev_sv); 1749 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1750 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1751 TRANSFER_CHECK (*ta);
1406} 1752}
1407 1753
1408static void 1754static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1755api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1756{
1411 dTHX;
1412 struct transfer_args ta; 1757 struct coro_transfer_args ta;
1413 1758
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1759 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1760 TRANSFER (ta, 1);
1416} 1761}
1417 1762
1418/** Coro ********************************************************************/ 1763/** Coro ********************************************************************/
1419 1764
1420static void 1765INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1766coro_enq (pTHX_ struct coro *coro)
1422{ 1767{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1768 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1424}
1425 1769
1426static SV * 1770 SvREFCNT_inc_NN (coro->hv);
1771
1772 coro->next_ready = 0;
1773 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1774 ready [1] = coro;
1775}
1776
1777INLINE struct coro *
1427coro_deq (pTHX) 1778coro_deq (pTHX)
1428{ 1779{
1429 int prio; 1780 int prio;
1430 1781
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1782 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1432 if (AvFILLp (coro_ready [prio]) >= 0) 1783 {
1433 return av_shift (coro_ready [prio]); 1784 struct coro **ready = coro_ready [prio];
1785
1786 if (ready [0])
1787 {
1788 struct coro *coro = ready [0];
1789 ready [0] = coro->next_ready;
1790 return coro;
1791 }
1792 }
1434 1793
1435 return 0; 1794 return 0;
1436} 1795}
1437 1796
1797static void
1798invoke_sv_ready_hook_helper (void)
1799{
1800 dTHX;
1801 dSP;
1802
1803 ENTER;
1804 SAVETMPS;
1805
1806 PUSHMARK (SP);
1807 PUTBACK;
1808 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1809
1810 FREETMPS;
1811 LEAVE;
1812}
1813
1438static int 1814static int
1439api_ready (SV *coro_sv) 1815api_ready (pTHX_ SV *coro_sv)
1440{ 1816{
1441 dTHX;
1442 struct coro *coro;
1443 SV *sv_hook;
1444 void (*xs_hook)(void);
1445
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1817 struct coro *coro = SvSTATE (coro_sv);
1450 1818
1451 if (coro->flags & CF_READY) 1819 if (coro->flags & CF_READY)
1452 return 0; 1820 return 0;
1453 1821
1454 coro->flags |= CF_READY; 1822 coro->flags |= CF_READY;
1455 1823
1456 LOCK; 1824 coro_enq (aTHX_ coro);
1457 1825
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1826 if (!coro_nready++)
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1827 if (coroapi.readyhook)
1460 1828 coroapi.readyhook ();
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1462 ++coro_nready;
1463
1464 UNLOCK;
1465
1466 if (sv_hook)
1467 {
1468 dSP;
1469
1470 ENTER;
1471 SAVETMPS;
1472
1473 PUSHMARK (SP);
1474 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD);
1476 SPAGAIN;
1477
1478 FREETMPS;
1479 LEAVE;
1480 }
1481
1482 if (xs_hook)
1483 xs_hook ();
1484 1829
1485 return 1; 1830 return 1;
1486} 1831}
1487 1832
1488static int 1833static int
1489api_is_ready (SV *coro_sv) 1834api_is_ready (pTHX_ SV *coro_sv)
1490{ 1835{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1836 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1837}
1494 1838
1495static void 1839/* expects to own a reference to next->hv */
1840INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1841prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1842{
1498 SV *prev_sv, *next_sv;
1499
1500 for (;;)
1501 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX);
1504
1505 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv))
1507 {
1508 dSP;
1509 UNLOCK;
1510
1511 ENTER;
1512 SAVETMPS;
1513
1514 PUSHMARK (SP);
1515 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1518
1519 FREETMPS;
1520 LEAVE;
1521 continue;
1522 }
1523
1524 ta->next = SvSTATE (next_sv);
1525
1526 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1532 continue;
1533 }
1534
1535 --coro_nready;
1536 UNLOCK;
1537 break;
1538 }
1539
1540 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1843 SV *prev_sv = SvRV (coro_current);
1844
1542 ta->prev = SvSTATE (prev_sv); 1845 ta->prev = SvSTATE_hv (prev_sv);
1846 ta->next = next;
1847
1543 TRANSFER_CHECK (*ta); 1848 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1849
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1850 SvRV_set (coro_current, (SV *)next->hv);
1547 1851
1548 LOCK;
1549 free_coro_mortal (aTHX); 1852 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1853 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1854}
1553 1855
1554static void 1856static void
1857prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1858{
1859 for (;;)
1860 {
1861 struct coro *next = coro_deq (aTHX);
1862
1863 if (expect_true (next))
1864 {
1865 /* cannot transfer to destroyed coros, skip and look for next */
1866 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1867 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1868 else
1869 {
1870 next->flags &= ~CF_READY;
1871 --coro_nready;
1872
1873 prepare_schedule_to (aTHX_ ta, next);
1874 break;
1875 }
1876 }
1877 else
1878 {
1879 /* nothing to schedule: call the idle handler */
1880 if (SvROK (sv_idle)
1881 && SvOBJECT (SvRV (sv_idle)))
1882 {
1883 if (SvRV (sv_idle) == SvRV (coro_current))
1884 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1885
1886 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1887 api_ready (aTHX_ SvRV (sv_idle));
1888 --coro_nready;
1889 }
1890 else
1891 {
1892 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1893 dSP;
1894
1895 ENTER;
1896 SAVETMPS;
1897
1898 PUSHMARK (SP);
1899 PUTBACK;
1900 call_sv (sv_idle, G_VOID | G_DISCARD);
1901
1902 FREETMPS;
1903 LEAVE;
1904 }
1905 }
1906 }
1907}
1908
1909INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1910prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1911{
1557 api_ready (coro_current); 1912 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1913 prepare_schedule (aTHX_ ta);
1559} 1914}
1560 1915
1916INLINE void
1917prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1918{
1919 SV *prev = SvRV (coro_current);
1920
1921 if (coro_nready)
1922 {
1923 prepare_schedule (aTHX_ ta);
1924 api_ready (aTHX_ prev);
1925 }
1926 else
1927 prepare_nop (aTHX_ ta);
1928}
1929
1930static void
1931api_schedule (pTHX)
1932{
1933 struct coro_transfer_args ta;
1934
1935 prepare_schedule (aTHX_ &ta);
1936 TRANSFER (ta, 1);
1937}
1938
1939static void
1940api_schedule_to (pTHX_ SV *coro_sv)
1941{
1942 struct coro_transfer_args ta;
1943 struct coro *next = SvSTATE (coro_sv);
1944
1945 SvREFCNT_inc_NN (coro_sv);
1946 prepare_schedule_to (aTHX_ &ta, next);
1947}
1948
1561static int 1949static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1950api_cede (pTHX)
1563{ 1951{
1564 if (coro_nready) 1952 struct coro_transfer_args ta;
1565 { 1953
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1954 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1955
1956 if (expect_true (ta.prev != ta.next))
1957 {
1958 TRANSFER (ta, 1);
1569 return 1; 1959 return 1;
1570 } 1960 }
1571 else 1961 else
1572 return 0; 1962 return 0;
1573} 1963}
1574 1964
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1965static int
1586api_cede (void) 1966api_cede_notself (pTHX)
1587{ 1967{
1588 dTHX; 1968 if (coro_nready)
1969 {
1589 struct transfer_args ta; 1970 struct coro_transfer_args ta;
1590 1971
1591 prepare_cede (aTHX_ &ta); 1972 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 1973 TRANSFER (ta, 1);
1596 return 1; 1974 return 1;
1597 } 1975 }
1598 else 1976 else
1599 return 0; 1977 return 0;
1600} 1978}
1601 1979
1602static int 1980static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 1981api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 1982{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 1983 struct coro *coro = SvSTATE (coro_sv);
1622 1984
1985 if (coro->flags & CF_RUNNING)
1986 croak ("cannot enable tracing on a running coroutine, caught");
1987
1623 if (flags & CC_TRACE) 1988 if (flags & CC_TRACE)
1624 { 1989 {
1625 if (!coro->cctx) 1990 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 1991 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 1992 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 1993 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 1994
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1995 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 1996 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1997 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 1998 {
… …
1638 else 2003 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 2004 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 2005 }
1641} 2006}
1642 2007
2008static void
2009coro_call_on_destroy (pTHX_ struct coro *coro)
2010{
2011 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
2012 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
2013
2014 if (on_destroyp)
2015 {
2016 AV *on_destroy = (AV *)SvRV (*on_destroyp);
2017
2018 while (AvFILLp (on_destroy) >= 0)
2019 {
2020 dSP; /* don't disturb outer sp */
2021 SV *cb = av_pop (on_destroy);
2022
2023 PUSHMARK (SP);
2024
2025 if (statusp)
2026 {
2027 int i;
2028 AV *status = (AV *)SvRV (*statusp);
2029 EXTEND (SP, AvFILLp (status) + 1);
2030
2031 for (i = 0; i <= AvFILLp (status); ++i)
2032 PUSHs (AvARRAY (status)[i]);
2033 }
2034
2035 PUTBACK;
2036 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
2037 }
2038 }
2039}
2040
2041static void
2042slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2043{
2044 int i;
2045 HV *hv = (HV *)SvRV (coro_current);
2046 AV *av = newAV ();
2047
2048 /* items are actually not so common, so optimise for this case */
2049 if (items)
2050 {
2051 av_extend (av, items - 1);
2052
2053 for (i = 0; i < items; ++i)
2054 av_push (av, SvREFCNT_inc_NN (arg [i]));
2055 }
2056
2057 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
2058
2059 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
2060 api_ready (aTHX_ sv_manager);
2061
2062 frame->prepare = prepare_schedule;
2063 frame->check = slf_check_repeat;
2064
2065 /* as a minor optimisation, we could unwind all stacks here */
2066 /* but that puts extra pressure on pp_slf, and is not worth much */
2067 /*coro_unwind_stacks (aTHX);*/
2068}
2069
2070/*****************************************************************************/
2071/* async pool handler */
2072
1643static int 2073static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2074slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1645{ 2075{
1646 AV *padlist; 2076 HV *hv = (HV *)SvRV (coro_current);
1647 AV *av = (AV *)mg->mg_obj; 2077 struct coro *coro = (struct coro *)frame->data;
1648 2078
1649 abort (); 2079 if (!coro->invoke_cb)
2080 return 1; /* loop till we have invoke */
2081 else
2082 {
2083 hv_store (hv, "desc", sizeof ("desc") - 1,
2084 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2085
2086 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2087
2088 {
2089 dSP;
2090 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2091 PUTBACK;
2092 }
2093
2094 SvREFCNT_dec (GvAV (PL_defgv));
2095 GvAV (PL_defgv) = coro->invoke_av;
2096 coro->invoke_av = 0;
2097
2098 return 0;
2099 }
2100}
2101
2102static void
2103slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2104{
2105 HV *hv = (HV *)SvRV (coro_current);
2106 struct coro *coro = SvSTATE_hv ((SV *)hv);
2107
2108 if (expect_true (coro->saved_deffh))
2109 {
2110 /* subsequent iteration */
2111 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2112 coro->saved_deffh = 0;
2113
2114 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2115 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2116 {
2117 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
2118 coro->invoke_av = newAV ();
2119
2120 frame->prepare = prepare_nop;
2121 }
2122 else
2123 {
2124 av_clear (GvAV (PL_defgv));
2125 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2126
2127 coro->prio = 0;
2128
2129 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2130 api_trace (aTHX_ coro_current, 0);
2131
2132 frame->prepare = prepare_schedule;
2133 av_push (av_async_pool, SvREFCNT_inc (hv));
2134 }
2135 }
2136 else
2137 {
2138 /* first iteration, simply fall through */
2139 frame->prepare = prepare_nop;
2140 }
2141
2142 frame->check = slf_check_pool_handler;
2143 frame->data = (void *)coro;
2144}
2145
2146/*****************************************************************************/
2147/* rouse callback */
2148
2149#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2150
2151static void
2152coro_rouse_callback (pTHX_ CV *cv)
2153{
2154 dXSARGS;
2155 SV *data = (SV *)S_GENSUB_ARG;
2156
2157 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2158 {
2159 /* first call, set args */
2160 SV *coro = SvRV (data);
2161 AV *av = newAV ();
2162
2163 SvRV_set (data, (SV *)av);
2164
2165 /* better take a full copy of the arguments */
2166 while (items--)
2167 av_store (av, items, newSVsv (ST (items)));
2168
2169 api_ready (aTHX_ coro);
2170 SvREFCNT_dec (coro);
2171 }
2172
2173 XSRETURN_EMPTY;
2174}
2175
2176static int
2177slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2178{
2179 SV *data = (SV *)frame->data;
2180
2181 if (CORO_THROW)
2182 return 0;
2183
2184 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2185 return 1;
2186
2187 /* now push all results on the stack */
2188 {
2189 dSP;
2190 AV *av = (AV *)SvRV (data);
2191 int i;
2192
2193 EXTEND (SP, AvFILLp (av) + 1);
2194 for (i = 0; i <= AvFILLp (av); ++i)
2195 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2196
2197 /* we have stolen the elements, so set length to zero and free */
2198 AvFILLp (av) = -1;
2199 av_undef (av);
2200
2201 PUTBACK;
2202 }
1650 2203
1651 return 0; 2204 return 0;
1652} 2205}
1653 2206
1654static MGVTBL coro_gensub_vtbl = { 2207static void
1655 0, 0, 0, 0, 2208slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 2209{
1657}; 2210 SV *cb;
2211
2212 if (items)
2213 cb = arg [0];
2214 else
2215 {
2216 struct coro *coro = SvSTATE_current;
2217
2218 if (!coro->rouse_cb)
2219 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2220
2221 cb = sv_2mortal (coro->rouse_cb);
2222 coro->rouse_cb = 0;
2223 }
2224
2225 if (!SvROK (cb)
2226 || SvTYPE (SvRV (cb)) != SVt_PVCV
2227 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2228 croak ("Coro::rouse_wait called with illegal callback argument,");
2229
2230 {
2231 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2232 SV *data = (SV *)S_GENSUB_ARG;
2233
2234 frame->data = (void *)data;
2235 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2236 frame->check = slf_check_rouse_wait;
2237 }
2238}
2239
2240static SV *
2241coro_new_rouse_cb (pTHX)
2242{
2243 HV *hv = (HV *)SvRV (coro_current);
2244 struct coro *coro = SvSTATE_hv (hv);
2245 SV *data = newRV_inc ((SV *)hv);
2246 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2247
2248 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2249 SvREFCNT_dec (data); /* magicext increases the refcount */
2250
2251 SvREFCNT_dec (coro->rouse_cb);
2252 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2253
2254 return cb;
2255}
2256
2257/*****************************************************************************/
2258/* schedule-like-function opcode (SLF) */
2259
2260static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2261static const CV *slf_cv;
2262static SV **slf_argv;
2263static int slf_argc, slf_arga; /* count, allocated */
2264static I32 slf_ax; /* top of stack, for restore */
2265
2266/* this restores the stack in the case we patched the entersub, to */
2267/* recreate the stack frame as perl will on following calls */
2268/* since entersub cleared the stack */
2269static OP *
2270pp_restore (pTHX)
2271{
2272 int i;
2273 SV **SP = PL_stack_base + slf_ax;
2274
2275 PUSHMARK (SP);
2276
2277 EXTEND (SP, slf_argc + 1);
2278
2279 for (i = 0; i < slf_argc; ++i)
2280 PUSHs (sv_2mortal (slf_argv [i]));
2281
2282 PUSHs ((SV *)CvGV (slf_cv));
2283
2284 RETURNOP (slf_restore.op_first);
2285}
2286
2287static void
2288slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2289{
2290 SV **arg = (SV **)slf_frame.data;
2291
2292 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2293}
2294
2295static void
2296slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2297{
2298 if (items != 2)
2299 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2300
2301 frame->prepare = slf_prepare_transfer;
2302 frame->check = slf_check_nop;
2303 frame->data = (void *)arg; /* let's hope it will stay valid */
2304}
2305
2306static void
2307slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2308{
2309 frame->prepare = prepare_schedule;
2310 frame->check = slf_check_nop;
2311}
2312
2313static void
2314slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2315{
2316 struct coro *next = (struct coro *)slf_frame.data;
2317
2318 SvREFCNT_inc_NN (next->hv);
2319 prepare_schedule_to (aTHX_ ta, next);
2320}
2321
2322static void
2323slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2324{
2325 if (!items)
2326 croak ("Coro::schedule_to expects a coroutine argument, caught");
2327
2328 frame->data = (void *)SvSTATE (arg [0]);
2329 frame->prepare = slf_prepare_schedule_to;
2330 frame->check = slf_check_nop;
2331}
2332
2333static void
2334slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2335{
2336 api_ready (aTHX_ SvRV (coro_current));
2337
2338 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2339}
2340
2341static void
2342slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2343{
2344 frame->prepare = prepare_cede;
2345 frame->check = slf_check_nop;
2346}
2347
2348static void
2349slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2350{
2351 frame->prepare = prepare_cede_notself;
2352 frame->check = slf_check_nop;
2353}
2354
2355/*
2356 * these not obviously related functions are all rolled into one
2357 * function to increase chances that they all will call transfer with the same
2358 * stack offset
2359 * SLF stands for "schedule-like-function".
2360 */
2361static OP *
2362pp_slf (pTHX)
2363{
2364 I32 checkmark; /* mark SP to see how many elements check has pushed */
2365
2366 /* set up the slf frame, unless it has already been set-up */
2367 /* the latter happens when a new coro has been started */
2368 /* or when a new cctx was attached to an existing coroutine */
2369 if (expect_true (!slf_frame.prepare))
2370 {
2371 /* first iteration */
2372 dSP;
2373 SV **arg = PL_stack_base + TOPMARK + 1;
2374 int items = SP - arg; /* args without function object */
2375 SV *gv = *sp;
2376
2377 /* do a quick consistency check on the "function" object, and if it isn't */
2378 /* for us, divert to the real entersub */
2379 if (SvTYPE (gv) != SVt_PVGV
2380 || !GvCV (gv)
2381 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2382 return PL_ppaddr[OP_ENTERSUB](aTHX);
2383
2384 if (!(PL_op->op_flags & OPf_STACKED))
2385 {
2386 /* ampersand-form of call, use @_ instead of stack */
2387 AV *av = GvAV (PL_defgv);
2388 arg = AvARRAY (av);
2389 items = AvFILLp (av) + 1;
2390 }
2391
2392 /* now call the init function, which needs to set up slf_frame */
2393 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2394 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2395
2396 /* pop args */
2397 SP = PL_stack_base + POPMARK;
2398
2399 PUTBACK;
2400 }
2401
2402 /* now that we have a slf_frame, interpret it! */
2403 /* we use a callback system not to make the code needlessly */
2404 /* complicated, but so we can run multiple perl coros from one cctx */
2405
2406 do
2407 {
2408 struct coro_transfer_args ta;
2409
2410 slf_frame.prepare (aTHX_ &ta);
2411 TRANSFER (ta, 0);
2412
2413 checkmark = PL_stack_sp - PL_stack_base;
2414 }
2415 while (slf_frame.check (aTHX_ &slf_frame));
2416
2417 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2418
2419 /* exception handling */
2420 if (expect_false (CORO_THROW))
2421 {
2422 SV *exception = sv_2mortal (CORO_THROW);
2423
2424 CORO_THROW = 0;
2425 sv_setsv (ERRSV, exception);
2426 croak (0);
2427 }
2428
2429 /* return value handling - mostly like entersub */
2430 /* make sure we put something on the stack in scalar context */
2431 if (GIMME_V == G_SCALAR)
2432 {
2433 dSP;
2434 SV **bot = PL_stack_base + checkmark;
2435
2436 if (sp == bot) /* too few, push undef */
2437 bot [1] = &PL_sv_undef;
2438 else if (sp != bot + 1) /* too many, take last one */
2439 bot [1] = *sp;
2440
2441 SP = bot + 1;
2442
2443 PUTBACK;
2444 }
2445
2446 return NORMAL;
2447}
2448
2449static void
2450api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2451{
2452 int i;
2453 SV **arg = PL_stack_base + ax;
2454 int items = PL_stack_sp - arg + 1;
2455
2456 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2457
2458 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2459 && PL_op->op_ppaddr != pp_slf)
2460 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2461
2462 CvFLAGS (cv) |= CVf_SLF;
2463 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2464 slf_cv = cv;
2465
2466 /* we patch the op, and then re-run the whole call */
2467 /* we have to put the same argument on the stack for this to work */
2468 /* and this will be done by pp_restore */
2469 slf_restore.op_next = (OP *)&slf_restore;
2470 slf_restore.op_type = OP_CUSTOM;
2471 slf_restore.op_ppaddr = pp_restore;
2472 slf_restore.op_first = PL_op;
2473
2474 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2475
2476 if (PL_op->op_flags & OPf_STACKED)
2477 {
2478 if (items > slf_arga)
2479 {
2480 slf_arga = items;
2481 Safefree (slf_argv);
2482 New (0, slf_argv, slf_arga, SV *);
2483 }
2484
2485 slf_argc = items;
2486
2487 for (i = 0; i < items; ++i)
2488 slf_argv [i] = SvREFCNT_inc (arg [i]);
2489 }
2490 else
2491 slf_argc = 0;
2492
2493 PL_op->op_ppaddr = pp_slf;
2494 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2495
2496 PL_op = (OP *)&slf_restore;
2497}
2498
2499/*****************************************************************************/
2500/* dynamic wind */
2501
2502static void
2503on_enterleave_call (pTHX_ SV *cb)
2504{
2505 dSP;
2506
2507 PUSHSTACK;
2508
2509 PUSHMARK (SP);
2510 PUTBACK;
2511 call_sv (cb, G_VOID | G_DISCARD);
2512 SPAGAIN;
2513
2514 POPSTACK;
2515}
2516
2517static SV *
2518coro_avp_pop_and_free (pTHX_ AV **avp)
2519{
2520 AV *av = *avp;
2521 SV *res = av_pop (av);
2522
2523 if (AvFILLp (av) < 0)
2524 {
2525 *avp = 0;
2526 SvREFCNT_dec (av);
2527 }
2528
2529 return res;
2530}
2531
2532static void
2533coro_pop_on_enter (pTHX_ void *coro)
2534{
2535 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2536 SvREFCNT_dec (cb);
2537}
2538
2539static void
2540coro_pop_on_leave (pTHX_ void *coro)
2541{
2542 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2543 on_enterleave_call (aTHX_ sv_2mortal (cb));
2544}
1658 2545
1659/*****************************************************************************/ 2546/*****************************************************************************/
1660/* PerlIO::cede */ 2547/* PerlIO::cede */
1661 2548
1662typedef struct 2549typedef struct
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2577 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2578 double now = nvtime ();
1692 2579
1693 if (now >= self->next) 2580 if (now >= self->next)
1694 { 2581 {
1695 api_cede (); 2582 api_cede (aTHX);
1696 self->next = now + self->every; 2583 self->next = now + self->every;
1697 } 2584 }
1698 2585
1699 return PerlIOBuf_flush (aTHX_ f); 2586 return PerlIOBuf_flush (aTHX_ f);
1700} 2587}
… …
1729 PerlIOBuf_get_ptr, 2616 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2617 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2618 PerlIOBuf_set_ptrcnt,
1732}; 2619};
1733 2620
2621/*****************************************************************************/
2622/* Coro::Semaphore & Coro::Signal */
2623
2624static SV *
2625coro_waitarray_new (pTHX_ int count)
2626{
2627 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2628 AV *av = newAV ();
2629 SV **ary;
2630
2631 /* unfortunately, building manually saves memory */
2632 Newx (ary, 2, SV *);
2633 AvALLOC (av) = ary;
2634#if PERL_VERSION_ATLEAST (5,10,0)
2635 AvARRAY (av) = ary;
2636#else
2637 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2638 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2639 SvPVX ((SV *)av) = (char *)ary;
2640#endif
2641 AvMAX (av) = 1;
2642 AvFILLp (av) = 0;
2643 ary [0] = newSViv (count);
2644
2645 return newRV_noinc ((SV *)av);
2646}
2647
2648/* semaphore */
2649
2650static void
2651coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2652{
2653 SV *count_sv = AvARRAY (av)[0];
2654 IV count = SvIVX (count_sv);
2655
2656 count += adjust;
2657 SvIVX (count_sv) = count;
2658
2659 /* now wake up as many waiters as are expected to lock */
2660 while (count > 0 && AvFILLp (av) > 0)
2661 {
2662 SV *cb;
2663
2664 /* swap first two elements so we can shift a waiter */
2665 AvARRAY (av)[0] = AvARRAY (av)[1];
2666 AvARRAY (av)[1] = count_sv;
2667 cb = av_shift (av);
2668
2669 if (SvOBJECT (cb))
2670 {
2671 api_ready (aTHX_ cb);
2672 --count;
2673 }
2674 else if (SvTYPE (cb) == SVt_PVCV)
2675 {
2676 dSP;
2677 PUSHMARK (SP);
2678 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2679 PUTBACK;
2680 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2681 }
2682
2683 SvREFCNT_dec (cb);
2684 }
2685}
2686
2687static void
2688coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2689{
2690 /* call $sem->adjust (0) to possibly wake up some other waiters */
2691 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2692}
2693
2694static int
2695slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2696{
2697 AV *av = (AV *)frame->data;
2698 SV *count_sv = AvARRAY (av)[0];
2699
2700 /* if we are about to throw, don't actually acquire the lock, just throw */
2701 if (CORO_THROW)
2702 return 0;
2703 else if (SvIVX (count_sv) > 0)
2704 {
2705 SvSTATE_current->on_destroy = 0;
2706
2707 if (acquire)
2708 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2709 else
2710 coro_semaphore_adjust (aTHX_ av, 0);
2711
2712 return 0;
2713 }
2714 else
2715 {
2716 int i;
2717 /* if we were woken up but can't down, we look through the whole */
2718 /* waiters list and only add us if we aren't in there already */
2719 /* this avoids some degenerate memory usage cases */
2720
2721 for (i = 1; i <= AvFILLp (av); ++i)
2722 if (AvARRAY (av)[i] == SvRV (coro_current))
2723 return 1;
2724
2725 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2726 return 1;
2727 }
2728}
2729
2730static int
2731slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2732{
2733 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2734}
2735
2736static int
2737slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2738{
2739 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2740}
2741
2742static void
2743slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2744{
2745 AV *av = (AV *)SvRV (arg [0]);
2746
2747 if (SvIVX (AvARRAY (av)[0]) > 0)
2748 {
2749 frame->data = (void *)av;
2750 frame->prepare = prepare_nop;
2751 }
2752 else
2753 {
2754 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2755
2756 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2757 frame->prepare = prepare_schedule;
2758
2759 /* to avoid race conditions when a woken-up coro gets terminated */
2760 /* we arrange for a temporary on_destroy that calls adjust (0) */
2761 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2762 }
2763}
2764
2765static void
2766slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2767{
2768 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2769 frame->check = slf_check_semaphore_down;
2770}
2771
2772static void
2773slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2774{
2775 if (items >= 2)
2776 {
2777 /* callback form */
2778 AV *av = (AV *)SvRV (arg [0]);
2779 SV *cb_cv = s_get_cv_croak (arg [1]);
2780
2781 av_push (av, SvREFCNT_inc_NN (cb_cv));
2782
2783 if (SvIVX (AvARRAY (av)[0]) > 0)
2784 coro_semaphore_adjust (aTHX_ av, 0);
2785
2786 frame->prepare = prepare_nop;
2787 frame->check = slf_check_nop;
2788 }
2789 else
2790 {
2791 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2792 frame->check = slf_check_semaphore_wait;
2793 }
2794}
2795
2796/* signal */
2797
2798static void
2799coro_signal_wake (pTHX_ AV *av, int count)
2800{
2801 SvIVX (AvARRAY (av)[0]) = 0;
2802
2803 /* now signal count waiters */
2804 while (count > 0 && AvFILLp (av) > 0)
2805 {
2806 SV *cb;
2807
2808 /* swap first two elements so we can shift a waiter */
2809 cb = AvARRAY (av)[0];
2810 AvARRAY (av)[0] = AvARRAY (av)[1];
2811 AvARRAY (av)[1] = cb;
2812
2813 cb = av_shift (av);
2814
2815 if (SvTYPE (cb) == SVt_PVCV)
2816 {
2817 dSP;
2818 PUSHMARK (SP);
2819 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2820 PUTBACK;
2821 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2822 }
2823 else
2824 {
2825 api_ready (aTHX_ cb);
2826 sv_setiv (cb, 0); /* signal waiter */
2827 }
2828
2829 SvREFCNT_dec (cb);
2830
2831 --count;
2832 }
2833}
2834
2835static int
2836slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2837{
2838 /* if we are about to throw, also stop waiting */
2839 return SvROK ((SV *)frame->data) && !CORO_THROW;
2840}
2841
2842static void
2843slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2844{
2845 AV *av = (AV *)SvRV (arg [0]);
2846
2847 if (items >= 2)
2848 {
2849 SV *cb_cv = s_get_cv_croak (arg [1]);
2850 av_push (av, SvREFCNT_inc_NN (cb_cv));
2851
2852 if (SvIVX (AvARRAY (av)[0]))
2853 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2854
2855 frame->prepare = prepare_nop;
2856 frame->check = slf_check_nop;
2857 }
2858 else if (SvIVX (AvARRAY (av)[0]))
2859 {
2860 SvIVX (AvARRAY (av)[0]) = 0;
2861 frame->prepare = prepare_nop;
2862 frame->check = slf_check_nop;
2863 }
2864 else
2865 {
2866 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2867
2868 av_push (av, waiter);
2869
2870 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2871 frame->prepare = prepare_schedule;
2872 frame->check = slf_check_signal_wait;
2873 }
2874}
2875
2876/*****************************************************************************/
2877/* Coro::AIO */
2878
2879#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2880
2881/* helper storage struct */
2882struct io_state
2883{
2884 int errorno;
2885 I32 laststype; /* U16 in 5.10.0 */
2886 int laststatval;
2887 Stat_t statcache;
2888};
2889
2890static void
2891coro_aio_callback (pTHX_ CV *cv)
2892{
2893 dXSARGS;
2894 AV *state = (AV *)S_GENSUB_ARG;
2895 SV *coro = av_pop (state);
2896 SV *data_sv = newSV (sizeof (struct io_state));
2897
2898 av_extend (state, items - 1);
2899
2900 sv_upgrade (data_sv, SVt_PV);
2901 SvCUR_set (data_sv, sizeof (struct io_state));
2902 SvPOK_only (data_sv);
2903
2904 {
2905 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2906
2907 data->errorno = errno;
2908 data->laststype = PL_laststype;
2909 data->laststatval = PL_laststatval;
2910 data->statcache = PL_statcache;
2911 }
2912
2913 /* now build the result vector out of all the parameters and the data_sv */
2914 {
2915 int i;
2916
2917 for (i = 0; i < items; ++i)
2918 av_push (state, SvREFCNT_inc_NN (ST (i)));
2919 }
2920
2921 av_push (state, data_sv);
2922
2923 api_ready (aTHX_ coro);
2924 SvREFCNT_dec (coro);
2925 SvREFCNT_dec ((AV *)state);
2926}
2927
2928static int
2929slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2930{
2931 AV *state = (AV *)frame->data;
2932
2933 /* if we are about to throw, return early */
2934 /* this does not cancel the aio request, but at least */
2935 /* it quickly returns */
2936 if (CORO_THROW)
2937 return 0;
2938
2939 /* one element that is an RV? repeat! */
2940 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2941 return 1;
2942
2943 /* restore status */
2944 {
2945 SV *data_sv = av_pop (state);
2946 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2947
2948 errno = data->errorno;
2949 PL_laststype = data->laststype;
2950 PL_laststatval = data->laststatval;
2951 PL_statcache = data->statcache;
2952
2953 SvREFCNT_dec (data_sv);
2954 }
2955
2956 /* push result values */
2957 {
2958 dSP;
2959 int i;
2960
2961 EXTEND (SP, AvFILLp (state) + 1);
2962 for (i = 0; i <= AvFILLp (state); ++i)
2963 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2964
2965 PUTBACK;
2966 }
2967
2968 return 0;
2969}
2970
2971static void
2972slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2973{
2974 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2975 SV *coro_hv = SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv (coro_hv);
2977
2978 /* put our coroutine id on the state arg */
2979 av_push (state, SvREFCNT_inc_NN (coro_hv));
2980
2981 /* first see whether we have a non-zero priority and set it as AIO prio */
2982 if (coro->prio)
2983 {
2984 dSP;
2985
2986 static SV *prio_cv;
2987 static SV *prio_sv;
2988
2989 if (expect_false (!prio_cv))
2990 {
2991 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2992 prio_sv = newSViv (0);
2993 }
2994
2995 PUSHMARK (SP);
2996 sv_setiv (prio_sv, coro->prio);
2997 XPUSHs (prio_sv);
2998
2999 PUTBACK;
3000 call_sv (prio_cv, G_VOID | G_DISCARD);
3001 }
3002
3003 /* now call the original request */
3004 {
3005 dSP;
3006 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3007 int i;
3008
3009 PUSHMARK (SP);
3010
3011 /* first push all args to the stack */
3012 EXTEND (SP, items + 1);
3013
3014 for (i = 0; i < items; ++i)
3015 PUSHs (arg [i]);
3016
3017 /* now push the callback closure */
3018 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3019
3020 /* now call the AIO function - we assume our request is uncancelable */
3021 PUTBACK;
3022 call_sv ((SV *)req, G_VOID | G_DISCARD);
3023 }
3024
3025 /* now that the request is going, we loop till we have a result */
3026 frame->data = (void *)state;
3027 frame->prepare = prepare_schedule;
3028 frame->check = slf_check_aio_req;
3029}
3030
3031static void
3032coro_aio_req_xs (pTHX_ CV *cv)
3033{
3034 dXSARGS;
3035
3036 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3037
3038 XSRETURN_EMPTY;
3039}
3040
3041/*****************************************************************************/
3042
3043#if CORO_CLONE
3044# include "clone.c"
3045#endif
3046
3047/*****************************************************************************/
3048
3049static SV *
3050coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3051{
3052 SV *coro_sv;
3053 struct coro *coro;
3054 MAGIC *mg;
3055 HV *hv;
3056 SV *cb;
3057 int i;
3058
3059 if (argc > 0)
3060 {
3061 cb = s_get_cv_croak (argv [0]);
3062
3063 if (!is_coro)
3064 {
3065 if (CvISXSUB (cb))
3066 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3067
3068 if (!CvROOT (cb))
3069 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3070 }
3071 }
3072
3073 Newz (0, coro, 1, struct coro);
3074 coro->args = newAV ();
3075 coro->flags = CF_NEW;
3076
3077 if (coro_first) coro_first->prev = coro;
3078 coro->next = coro_first;
3079 coro_first = coro;
3080
3081 coro->hv = hv = newHV ();
3082 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3083 mg->mg_flags |= MGf_DUP;
3084 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3085
3086 if (argc > 0)
3087 {
3088 av_extend (coro->args, argc + is_coro - 1);
3089
3090 if (is_coro)
3091 {
3092 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3093 cb = (SV *)cv_coro_run;
3094 }
3095
3096 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3097
3098 for (i = 1; i < argc; i++)
3099 av_push (coro->args, newSVsv (argv [i]));
3100 }
3101
3102 return coro_sv;
3103}
1734 3104
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3105MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 3106
1737PROTOTYPES: DISABLE 3107PROTOTYPES: DISABLE
1738 3108
1739BOOT: 3109BOOT:
1740{ 3110{
1741#ifdef USE_ITHREADS 3111#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 3112# if CORO_PTHREAD
3113 coro_thx = PERL_GET_CONTEXT;
3114# endif
1743#endif 3115#endif
1744 BOOT_PAGESIZE; 3116 BOOT_PAGESIZE;
3117
3118 cctx_current = cctx_new_empty ();
1745 3119
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3120 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3121 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 3122
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3123 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 3139 main_top_env = PL_top_env;
1766 3140
1767 while (main_top_env->je_prev) 3141 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 3142 main_top_env = main_top_env->je_prev;
1769 3143
1770 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION;
1772 coroapi.transfer = api_transfer;
1773
1774 { 3144 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3145 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
1776 3146
1777 if (!svp) croak ("Time::HiRes is required"); 3147 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
1778 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3148 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
1779 3149
1780 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3150 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3151 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
1781 } 3152 }
1782 3153
3154 coroapi.ver = CORO_API_VERSION;
3155 coroapi.rev = CORO_API_REVISION;
3156
3157 coroapi.transfer = api_transfer;
3158
3159 coroapi.sv_state = SvSTATE_;
3160 coroapi.execute_slf = api_execute_slf;
3161 coroapi.prepare_nop = prepare_nop;
3162 coroapi.prepare_schedule = prepare_schedule;
3163 coroapi.prepare_cede = prepare_cede;
3164 coroapi.prepare_cede_notself = prepare_cede_notself;
3165
3166 time_init ();
3167
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3168 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1784} 3169}
1785 3170
1786SV * 3171SV *
1787new (char *klass, ...) 3172new (SV *klass, ...)
3173 ALIAS:
3174 Coro::new = 1
1788 CODE: 3175 CODE:
1789{ 3176 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1790 struct coro *coro; 3177 OUTPUT:
1791 MAGIC *mg;
1792 HV *hv;
1793 int i;
1794
1795 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV ();
1797 coro->flags = CF_NEW;
1798
1799 if (coro_first) coro_first->prev = coro;
1800 coro->next = coro_first;
1801 coro_first = coro;
1802
1803 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807
1808 av_extend (coro->args, items - 1);
1809 for (i = 1; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i)));
1811}
1812 OUTPUT:
1813 RETVAL 3178 RETVAL
1814 3179
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void 3180void
1819_set_stacklevel (...) 3181transfer (...)
1820 ALIAS: 3182 PROTOTYPE: $$
1821 Coro::State::transfer = 1 3183 CODE:
1822 Coro::schedule = 2 3184 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866 3185
1867bool 3186bool
1868_destroy (SV *coro_sv) 3187_destroy (SV *coro_sv)
1869 CODE: 3188 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3189 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875_exit (int code) 3194_exit (int code)
1876 PROTOTYPE: $ 3195 PROTOTYPE: $
1877 CODE: 3196 CODE:
1878 _exit (code); 3197 _exit (code);
1879 3198
3199SV *
3200clone (Coro::State coro)
3201 CODE:
3202{
3203#if CORO_CLONE
3204 struct coro *ncoro = coro_clone (aTHX_ coro);
3205 MAGIC *mg;
3206 /* TODO: too much duplication */
3207 ncoro->hv = newHV ();
3208 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3209 mg->mg_flags |= MGf_DUP;
3210 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3211#else
3212 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3213#endif
3214}
3215 OUTPUT:
3216 RETVAL
3217
1880int 3218int
1881cctx_stacksize (int new_stacksize = 0) 3219cctx_stacksize (int new_stacksize = 0)
3220 PROTOTYPE: ;$
1882 CODE: 3221 CODE:
1883 RETVAL = coro_stacksize; 3222 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 3223 if (new_stacksize)
3224 {
1885 coro_stacksize = new_stacksize; 3225 cctx_stacksize = new_stacksize;
3226 ++cctx_gen;
3227 }
1886 OUTPUT: 3228 OUTPUT:
1887 RETVAL 3229 RETVAL
1888 3230
1889int 3231int
3232cctx_max_idle (int max_idle = 0)
3233 PROTOTYPE: ;$
3234 CODE:
3235 RETVAL = cctx_max_idle;
3236 if (max_idle > 1)
3237 cctx_max_idle = max_idle;
3238 OUTPUT:
3239 RETVAL
3240
3241int
1890cctx_count () 3242cctx_count ()
3243 PROTOTYPE:
1891 CODE: 3244 CODE:
1892 RETVAL = cctx_count; 3245 RETVAL = cctx_count;
1893 OUTPUT: 3246 OUTPUT:
1894 RETVAL 3247 RETVAL
1895 3248
1896int 3249int
1897cctx_idle () 3250cctx_idle ()
3251 PROTOTYPE:
1898 CODE: 3252 CODE:
1899 RETVAL = cctx_idle; 3253 RETVAL = cctx_idle;
1900 OUTPUT: 3254 OUTPUT:
1901 RETVAL 3255 RETVAL
1902 3256
1903void 3257void
1904list () 3258list ()
3259 PROTOTYPE:
1905 PPCODE: 3260 PPCODE:
1906{ 3261{
1907 struct coro *coro; 3262 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 3263 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 3264 if (coro->hv)
… …
1916 eval = 1 3271 eval = 1
1917 CODE: 3272 CODE:
1918{ 3273{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3274 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 { 3275 {
1921 struct coro temp; 3276 struct coro *current = SvSTATE_current;
1922 3277
1923 if (!(coro->flags & CF_RUNNING)) 3278 if (current != coro)
1924 { 3279 {
1925 PUTBACK; 3280 PUTBACK;
1926 save_perl (aTHX_ &temp); 3281 save_perl (aTHX_ current);
1927 load_perl (aTHX_ coro); 3282 load_perl (aTHX_ coro);
3283 SPAGAIN;
1928 } 3284 }
1929 3285
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK; 3286 PUSHSTACK;
3287
1936 PUSHMARK (SP); 3288 PUSHMARK (SP);
3289 PUTBACK;
1937 3290
1938 if (ix) 3291 if (ix)
1939 eval_sv (coderef, 0); 3292 eval_sv (coderef, 0);
1940 else 3293 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3294 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942 3295
1943 POPSTACK; 3296 POPSTACK;
1944 SPAGAIN; 3297 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949 3298
1950 if (!(coro->flags & CF_RUNNING)) 3299 if (current != coro)
1951 { 3300 {
3301 PUTBACK;
1952 save_perl (aTHX_ coro); 3302 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp); 3303 load_perl (aTHX_ current);
1954 SPAGAIN; 3304 SPAGAIN;
1955 } 3305 }
1956 } 3306 }
1957} 3307}
1958 3308
… …
1962 ALIAS: 3312 ALIAS:
1963 is_ready = CF_READY 3313 is_ready = CF_READY
1964 is_running = CF_RUNNING 3314 is_running = CF_RUNNING
1965 is_new = CF_NEW 3315 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED 3316 is_destroyed = CF_DESTROYED
3317 is_suspended = CF_SUSPENDED
1967 CODE: 3318 CODE:
1968 RETVAL = boolSV (coro->flags & ix); 3319 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3320 OUTPUT:
1970 RETVAL 3321 RETVAL
1971 3322
1972void 3323void
3324throw (Coro::State self, SV *exception = &PL_sv_undef)
3325 PROTOTYPE: $;$
3326 CODE:
3327{
3328 struct coro *current = SvSTATE_current;
3329 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3330 SvREFCNT_dec (*exceptionp);
3331 SvGETMAGIC (exception);
3332 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3333}
3334
3335void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3336api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3337 PROTOTYPE: $;$
3338 C_ARGS: aTHX_ coro, flags
1974 3339
1975SV * 3340SV *
1976has_cctx (Coro::State coro) 3341has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3342 PROTOTYPE: $
1978 CODE: 3343 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3344 /* maybe manage the running flag differently */
3345 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3346 OUTPUT:
1981 RETVAL 3347 RETVAL
1982 3348
1983int 3349int
1984is_traced (Coro::State coro) 3350is_traced (Coro::State coro)
… …
1986 CODE: 3352 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3353 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3354 OUTPUT:
1989 RETVAL 3355 RETVAL
1990 3356
1991IV 3357UV
1992rss (Coro::State coro) 3358rss (Coro::State coro)
1993 PROTOTYPE: $ 3359 PROTOTYPE: $
1994 ALIAS: 3360 ALIAS:
1995 usecount = 1 3361 usecount = 1
1996 CODE: 3362 CODE:
… …
2002 OUTPUT: 3368 OUTPUT:
2003 RETVAL 3369 RETVAL
2004 3370
2005void 3371void
2006force_cctx () 3372force_cctx ()
3373 PROTOTYPE:
2007 CODE: 3374 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3375 cctx_current->idle_sp = 0;
2010 3376
2011void 3377void
2012swap_defsv (Coro::State self) 3378swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 3379 PROTOTYPE: $
2014 ALIAS: 3380 ALIAS:
2015 swap_defav = 1 3381 swap_defav = 1
2016 CODE: 3382 CODE:
2017 if (!self->slot) 3383 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 3384 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 3385 else
2020 { 3386 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3387 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3388 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 3389
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 3390 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 3391 }
2026 3392
3393void
3394cancel (Coro::State self)
3395 CODE:
3396 coro_state_destroy (aTHX_ self);
3397 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3398
3399
3400SV *
3401enable_times (int enabled = enable_times)
3402 CODE:
3403{
3404 RETVAL = boolSV (enable_times);
3405
3406 if (enabled != enable_times)
3407 {
3408 enable_times = enabled;
3409
3410 coro_times_update ();
3411 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3412 }
3413}
3414 OUTPUT:
3415 RETVAL
3416
3417void
3418times (Coro::State self)
3419 PPCODE:
3420{
3421 struct coro *current = SvSTATE (coro_current);
3422
3423 if (expect_false (current == self))
3424 {
3425 coro_times_update ();
3426 coro_times_add (SvSTATE (coro_current));
3427 }
3428
3429 EXTEND (SP, 2);
3430 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3431 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3432
3433 if (expect_false (current == self))
3434 coro_times_sub (SvSTATE (coro_current));
3435}
3436
3437void
3438swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3439 CODE:
3440{
3441 struct coro *current = SvSTATE_current;
3442
3443 if (current == coro)
3444 SWAP_SVS (current);
3445
3446 if (!coro->swap_sv)
3447 coro->swap_sv = newAV ();
3448
3449 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3450 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3451
3452 if (current == coro)
3453 SWAP_SVS (current);
3454}
3455
3456
2027MODULE = Coro::State PACKAGE = Coro 3457MODULE = Coro::State PACKAGE = Coro
2028 3458
2029BOOT: 3459BOOT:
2030{ 3460{
2031 int i;
2032
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3461 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3462 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 3463 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3464 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3465 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2038 SvREADONLY_on (coro_current); 3466 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3467 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3468 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3469 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2039 3470
3471 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3472 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3473 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3474 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3475
2040 coro_stash = gv_stashpv ("Coro", TRUE); 3476 coro_stash = gv_stashpv ("Coro", TRUE);
2041 3477
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3478 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3479 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2044 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3480 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2045 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3481 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2046 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3482 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2047 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3483 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2048
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV ();
2051 3484
2052 { 3485 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 3486 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 3487
2056 coroapi.schedule = api_schedule; 3488 coroapi.schedule = api_schedule;
3489 coroapi.schedule_to = api_schedule_to;
2057 coroapi.cede = api_cede; 3490 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 3491 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 3492 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 3493 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 3494 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 3495 coroapi.current = coro_current;
2063 3496
2064 GCoroAPI = &coroapi; 3497 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 3498 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 3499 SvREADONLY_on (sv);
2067 } 3500 }
2068} 3501}
3502
3503SV *
3504async (...)
3505 PROTOTYPE: &@
3506 CODE:
3507 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3508 api_ready (aTHX_ RETVAL);
3509 OUTPUT:
3510 RETVAL
3511
3512void
3513terminate (...)
3514 CODE:
3515 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3516
3517void
3518schedule (...)
3519 CODE:
3520 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3521
3522void
3523schedule_to (...)
3524 CODE:
3525 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3526
3527void
3528cede_to (...)
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3531
3532void
3533cede (...)
3534 CODE:
3535 CORO_EXECUTE_SLF_XS (slf_init_cede);
3536
3537void
3538cede_notself (...)
3539 CODE:
3540 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2069 3541
2070void 3542void
2071_set_current (SV *current) 3543_set_current (SV *current)
2072 PROTOTYPE: $ 3544 PROTOTYPE: $
2073 CODE: 3545 CODE:
… …
2076 3548
2077void 3549void
2078_set_readyhook (SV *hook) 3550_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3551 PROTOTYPE: $
2080 CODE: 3552 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3553 SvREFCNT_dec (coro_readyhook);
3554 SvGETMAGIC (hook);
3555 if (SvOK (hook))
3556 {
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3557 coro_readyhook = newSVsv (hook);
2084 UNLOCK; 3558 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3559 }
3560 else
3561 {
3562 coro_readyhook = 0;
3563 CORO_READYHOOK = 0;
3564 }
2085 3565
2086int 3566int
2087prio (Coro::State coro, int newprio = 0) 3567prio (Coro::State coro, int newprio = 0)
3568 PROTOTYPE: $;$
2088 ALIAS: 3569 ALIAS:
2089 nice = 1 3570 nice = 1
2090 CODE: 3571 CODE:
2091{ 3572{
2092 RETVAL = coro->prio; 3573 RETVAL = coro->prio;
… …
2094 if (items > 1) 3575 if (items > 1)
2095 { 3576 {
2096 if (ix) 3577 if (ix)
2097 newprio = coro->prio - newprio; 3578 newprio = coro->prio - newprio;
2098 3579
2099 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3580 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2100 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3581 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2101 3582
2102 coro->prio = newprio; 3583 coro->prio = newprio;
2103 } 3584 }
2104} 3585}
2105 OUTPUT: 3586 OUTPUT:
… …
2107 3588
2108SV * 3589SV *
2109ready (SV *self) 3590ready (SV *self)
2110 PROTOTYPE: $ 3591 PROTOTYPE: $
2111 CODE: 3592 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3593 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3594 OUTPUT:
2114 RETVAL 3595 RETVAL
2115 3596
2116int 3597int
2117nready (...) 3598nready (...)
… …
2120 RETVAL = coro_nready; 3601 RETVAL = coro_nready;
2121 OUTPUT: 3602 OUTPUT:
2122 RETVAL 3603 RETVAL
2123 3604
2124void 3605void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3606suspend (Coro::State self)
2126 PROTOTYPE: $;$ 3607 PROTOTYPE: $
2127 CODE: 3608 CODE:
2128 SvREFCNT_dec (self->throw); 3609 self->flags |= CF_SUSPENDED;
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3610
2131# for async_pool speedup
2132void 3611void
2133_pool_1 (SV *cb) 3612resume (Coro::State self)
3613 PROTOTYPE: $
2134 CODE: 3614 CODE:
2135{ 3615 self->flags &= ~CF_SUSPENDED;
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142 3616
2143 if (!invoke) 3617void
3618_pool_handler (...)
3619 CODE:
3620 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3621
3622void
3623async_pool (SV *cv, ...)
3624 PROTOTYPE: &@
3625 PPCODE:
3626{
3627 HV *hv = (HV *)av_pop (av_async_pool);
3628 AV *av = newAV ();
3629 SV *cb = ST (0);
3630 int i;
3631
3632 av_extend (av, items - 2);
3633 for (i = 1; i < items; ++i)
3634 av_push (av, SvREFCNT_inc_NN (ST (i)));
3635
3636 if ((SV *)hv == &PL_sv_undef)
2144 { 3637 {
2145 SV *old = PL_diehook; 3638 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2146 PL_diehook = 0; 3639 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2147 SvREFCNT_dec (old); 3640 SvREFCNT_dec (sv);
2148 croak ("\3async_pool terminate\2\n");
2149 } 3641 }
2150 3642
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 { 3643 {
2164 av_fill (defav, len - 1); 3644 struct coro *coro = SvSTATE_hv (hv);
2165 for (i = 0; i < len; ++i) 3645
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3646 assert (!coro->invoke_cb);
3647 assert (!coro->invoke_av);
3648 coro->invoke_cb = SvREFCNT_inc (cb);
3649 coro->invoke_av = av;
2167 } 3650 }
2168 3651
3652 api_ready (aTHX_ (SV *)hv);
3653
3654 if (GIMME_V != G_VOID)
3655 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3656 else
2169 SvREFCNT_dec (invoke); 3657 SvREFCNT_dec (hv);
2170} 3658}
2171 3659
2172void 3660SV *
2173_pool_2 (SV *cb) 3661rouse_cb ()
3662 PROTOTYPE:
2174 CODE: 3663 CODE:
2175{ 3664 RETVAL = coro_new_rouse_cb (aTHX);
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3665 OUTPUT:
2248 RETVAL 3666 RETVAL
2249 3667
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 3668void
2256_get_state (SV *self) 3669rouse_wait (...)
3670 PROTOTYPE: ;$
2257 PPCODE: 3671 PPCODE:
2258{ 3672 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283 3673
2284void 3674void
2285_set_state (SV *state) 3675on_enter (SV *block)
3676 ALIAS:
3677 on_leave = 1
2286 PROTOTYPE: $ 3678 PROTOTYPE: &
3679 CODE:
3680{
3681 struct coro *coro = SvSTATE_current;
3682 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3683
3684 block = s_get_cv_croak (block);
3685
3686 if (!*avp)
3687 *avp = newAV ();
3688
3689 av_push (*avp, SvREFCNT_inc (block));
3690
3691 if (!ix)
3692 on_enterleave_call (aTHX_ block);
3693
3694 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3695 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3696 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3697}
3698
3699
3700MODULE = Coro::State PACKAGE = PerlIO::cede
3701
3702BOOT:
3703 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3704
3705
3706MODULE = Coro::State PACKAGE = Coro::Semaphore
3707
3708SV *
3709new (SV *klass, SV *count = 0)
3710 CODE:
3711{
3712 int semcnt = 1;
3713
3714 if (count)
3715 {
3716 SvGETMAGIC (count);
3717
3718 if (SvOK (count))
3719 semcnt = SvIV (count);
3720 }
3721
3722 RETVAL = sv_bless (
3723 coro_waitarray_new (aTHX_ semcnt),
3724 GvSTASH (CvGV (cv))
3725 );
3726}
3727 OUTPUT:
3728 RETVAL
3729
3730# helper for Coro::Channel and others
3731SV *
3732_alloc (int count)
3733 CODE:
3734 RETVAL = coro_waitarray_new (aTHX_ count);
3735 OUTPUT:
3736 RETVAL
3737
3738SV *
3739count (SV *self)
3740 CODE:
3741 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3742 OUTPUT:
3743 RETVAL
3744
3745void
3746up (SV *self, int adjust = 1)
3747 ALIAS:
3748 adjust = 1
3749 CODE:
3750 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3751
3752void
3753down (...)
3754 CODE:
3755 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3756
3757void
3758wait (...)
3759 CODE:
3760 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3761
3762void
3763try (SV *self)
3764 PPCODE:
3765{
3766 AV *av = (AV *)SvRV (self);
3767 SV *count_sv = AvARRAY (av)[0];
3768 IV count = SvIVX (count_sv);
3769
3770 if (count > 0)
3771 {
3772 --count;
3773 SvIVX (count_sv) = count;
3774 XSRETURN_YES;
3775 }
3776 else
3777 XSRETURN_NO;
3778}
3779
3780void
3781waiters (SV *self)
3782 PPCODE:
3783{
3784 AV *av = (AV *)SvRV (self);
3785 int wcount = AvFILLp (av) + 1 - 1;
3786
3787 if (GIMME_V == G_SCALAR)
3788 XPUSHs (sv_2mortal (newSViv (wcount)));
3789 else
3790 {
3791 int i;
3792 EXTEND (SP, wcount);
3793 for (i = 1; i <= wcount; ++i)
3794 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3795 }
3796}
3797
3798MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3799
3800void
3801_may_delete (SV *sem, int count, int extra_refs)
2287 PPCODE: 3802 PPCODE:
2288{ 3803{
2289 AV *av = (AV *)SvRV (state); 3804 AV *av = (AV *)SvRV (sem);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
2292 3805
2293 errno = data->errorno; 3806 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2294 PL_laststype = data->laststype; 3807 && AvFILLp (av) == 0 /* no waiters, just count */
2295 PL_laststatval = data->laststatval; 3808 && SvIV (AvARRAY (av)[0]) == count)
2296 PL_statcache = data->statcache; 3809 XSRETURN_YES;
2297 3810
3811 XSRETURN_NO;
3812}
3813
3814MODULE = Coro::State PACKAGE = Coro::Signal
3815
3816SV *
3817new (SV *klass)
3818 CODE:
3819 RETVAL = sv_bless (
3820 coro_waitarray_new (aTHX_ 0),
3821 GvSTASH (CvGV (cv))
3822 );
3823 OUTPUT:
3824 RETVAL
3825
3826void
3827wait (...)
3828 CODE:
3829 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3830
3831void
3832broadcast (SV *self)
3833 CODE:
3834{
3835 AV *av = (AV *)SvRV (self);
3836 coro_signal_wake (aTHX_ av, AvFILLp (av));
3837}
3838
3839void
3840send (SV *self)
3841 CODE:
3842{
3843 AV *av = (AV *)SvRV (self);
3844
2298 EXTEND (SP, AvFILLp (av)); 3845 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 3846 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3847 else
3848 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 3849}
3850
3851IV
3852awaited (SV *self)
3853 CODE:
3854 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3855 OUTPUT:
3856 RETVAL
2302 3857
2303 3858
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 3859MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 3860
2306BOOT: 3861BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3862 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 3863
2309SV * 3864void
2310_schedule (...) 3865_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 3866 CODE:
2313{ 3867{
2314 static int incede; 3868 static int incede;
2315 3869
2316 api_cede_notself (); 3870 api_cede_notself (aTHX);
2317 3871
2318 ++incede; 3872 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 3873 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 3874 ;
2321 3875
2322 sv_setsv (sv_activity, &PL_sv_undef); 3876 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 3877 if (coro_nready >= incede)
2324 { 3878 {
2325 PUSHMARK (SP); 3879 PUSHMARK (SP);
2326 PUTBACK; 3880 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3881 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 3882 }
2330 3883
2331 --incede; 3884 --incede;
2332} 3885}
2333 3886
2334 3887
2335MODULE = Coro::State PACKAGE = PerlIO::cede 3888MODULE = Coro::State PACKAGE = Coro::AIO
2336 3889
2337BOOT: 3890void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3891_register (char *target, char *proto, SV *req)
3892 CODE:
3893{
3894 SV *req_cv = s_get_cv_croak (req);
3895 /* newXSproto doesn't return the CV on 5.8 */
3896 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3897 sv_setpv ((SV *)slf_cv, proto);
3898 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3899}
3900
3901MODULE = Coro::State PACKAGE = Coro::Select
3902
3903void
3904patch_pp_sselect ()
3905 CODE:
3906 if (!coro_old_pp_sselect)
3907 {
3908 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
3909 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
3910 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
3911 }
3912
3913void
3914unpatch_pp_sselect ()
3915 CODE:
3916 if (coro_old_pp_sselect)
3917 {
3918 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
3919 coro_old_pp_sselect = 0;
3920 }
3921

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