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Comparing Coro/Coro/State.xs (file contents):
Revision 1.245 by root, Mon Sep 22 05:40:21 2008 UTC vs.
Revision 1.363 by root, Tue Jul 14 00:55:10 2009 UTC

… …
4#define PERL_EXT 4#define PERL_EXT
5 5
6#include "EXTERN.h" 6#include "EXTERN.h"
7#include "perl.h" 7#include "perl.h"
8#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
9 10
10#include "patchlevel.h" 11#include "schmorp.h"
11 12
12#include <stdio.h> 13#include <stdio.h>
13#include <errno.h> 14#include <errno.h>
14#include <assert.h> 15#include <assert.h>
15 16
16#ifdef WIN32 17#ifdef WIN32
17# undef setjmp 18# undef setjmp
18# undef longjmp 19# undef longjmp
19# undef _exit 20# undef _exit
20# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
21#else 22#else
22# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
23#endif 24#endif
24 25
25#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
45# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
46#endif 47#endif
47 48
48#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
49# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
50# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
51#else
52# define REGISTER_STACK(cctx,start,end)
53#endif 51#endif
54 52
55/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
56#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
57
58#define PERL_VERSION_ATLEAST(a,b,c) \
59 (PERL_REVISION > (a) \
60 || (PERL_REVISION == (a) \
61 && (PERL_VERSION > (b) \
62 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
63
64#if !PERL_VERSION_ATLEAST (5,6,0)
65# ifndef PL_ppaddr
66# define PL_ppaddr ppaddr
67# endif
68# ifndef call_sv
69# define call_sv perl_call_sv
70# endif
71# ifndef get_sv
72# define get_sv perl_get_sv
73# endif
74# ifndef get_cv
75# define get_cv perl_get_cv
76# endif
77# ifndef IS_PADGV
78# define IS_PADGV(v) 0
79# endif
80# ifndef IS_PADCONST
81# define IS_PADCONST(v) 0
82# endif
83#endif
84
85/* 5.8.8 */
86#ifndef GV_NOTQUAL
87# define GV_NOTQUAL 0
88#endif
89#ifndef newSV
90# define newSV(l) NEWSV(0,l)
91#endif
92
93/* 5.11 */
94#ifndef CxHASARGS
95# define CxHASARGS(cx) (cx)->blk_sub.hasargs
96#endif
97
98/* 5.8.7 */
99#ifndef SvRV_set
100# define SvRV_set(s,v) SvRV(s) = (v)
101#endif
102 55
103#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 56#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
104# undef CORO_STACKGUARD 57# undef CORO_STACKGUARD
105#endif 58#endif
106 59
… …
113# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
114#endif 67#endif
115 68
116/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
117 * portable way as possible. */ 70 * portable way as possible. */
71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
73# define STACKLEVEL __builtin_frame_address (0)
74#else
118#define dSTACKLEVEL volatile char stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
119#define STACKLEVEL ((void *)&stacklevel) 76# define STACKLEVEL ((void *)&stacklevel)
77#endif
120 78
121#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
122 80
123#if __GNUC__ >= 3 81#if __GNUC__ >= 3
124# define attribute(x) __attribute__(x) 82# define attribute(x) __attribute__(x)
125# define BARRIER __asm__ __volatile__ ("" : : : "memory")
126# define expect(expr,value) __builtin_expect ((expr),(value)) 83# define expect(expr,value) __builtin_expect ((expr), (value))
84# define INLINE static inline
127#else 85#else
128# define attribute(x) 86# define attribute(x)
129# define BARRIER
130# define expect(expr,value) (expr) 87# define expect(expr,value) (expr)
88# define INLINE static
131#endif 89#endif
132 90
133#define expect_false(expr) expect ((expr) != 0, 0) 91#define expect_false(expr) expect ((expr) != 0, 0)
134#define expect_true(expr) expect ((expr) != 0, 1) 92#define expect_true(expr) expect ((expr) != 0, 1)
135 93
136#define NOINLINE attribute ((noinline)) 94#define NOINLINE attribute ((noinline))
137 95
138#include "CoroAPI.h" 96#include "CoroAPI.h"
97#define GCoroAPI (&coroapi) /* very sneaky */
139 98
140#ifdef USE_ITHREADS 99#ifdef USE_ITHREADS
141static perl_mutex coro_mutex; 100# if CORO_PTHREAD
142# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 101static void *coro_thx;
143# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 102# endif
144#else
145# define LOCK (void)0
146# define UNLOCK (void)0
147#endif 103#endif
148 104
149/* helper storage struct for Coro::AIO */ 105#ifdef __linux
150struct io_state 106# include <time.h> /* for timespec */
151{ 107# include <syscall.h> /* for SYS_* */
152 int errorno; 108# ifdef SYS_clock_gettime
153 I32 laststype; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
154 int laststatval; 110# define CORO_CLOCK_MONOTONIC 1
155 Stat_t statcache; 111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
156}; 112# endif
113#endif
157 114
115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121
122static U32 cctx_gen;
158static size_t coro_stacksize = CORO_STACKSIZE; 123static size_t cctx_stacksize = CORO_STACKSIZE;
159static struct CoroAPI coroapi; 124static struct CoroAPI coroapi;
160static AV *main_mainstack; /* used to differentiate between $main and others */ 125static AV *main_mainstack; /* used to differentiate between $main and others */
161static JMPENV *main_top_env; 126static JMPENV *main_top_env;
162static HV *coro_state_stash, *coro_stash; 127static HV *coro_state_stash, *coro_stash;
163static volatile SV *coro_mortal; /* will be freed after next transfer */ 128static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
129
130static AV *av_destroy; /* destruction queue */
131static SV *sv_manager; /* the manager coro */
132static SV *sv_idle; /* $Coro::idle */
164 133
165static GV *irsgv; /* $/ */ 134static GV *irsgv; /* $/ */
166static GV *stdoutgv; /* *STDOUT */ 135static GV *stdoutgv; /* *STDOUT */
167static SV *rv_diehook; 136static SV *rv_diehook;
168static SV *rv_warnhook; 137static SV *rv_warnhook;
169static HV *hv_sig; /* %SIG */ 138static HV *hv_sig; /* %SIG */
170 139
171/* async_pool helper stuff */ 140/* async_pool helper stuff */
172static SV *sv_pool_rss; 141static SV *sv_pool_rss;
173static SV *sv_pool_size; 142static SV *sv_pool_size;
143static SV *sv_async_pool_idle; /* description string */
174static AV *av_async_pool; 144static AV *av_async_pool; /* idle pool */
145static SV *sv_Coro; /* class string */
146static CV *cv_pool_handler;
147static CV *cv_coro_state_new;
175 148
176/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
177static SV *sv_activity; 150static SV *sv_activity;
151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
178 157
179static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
180static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
181 160
182enum { 161enum {
… …
187 CC_TRACE_LINE = 0x10, /* trace each statement */ 166 CC_TRACE_LINE = 0x10, /* trace each statement */
188 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 167 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
189}; 168};
190 169
191/* this is a structure representing a c-level coroutine */ 170/* this is a structure representing a c-level coroutine */
192typedef struct coro_cctx { 171typedef struct coro_cctx
172{
193 struct coro_cctx *next; 173 struct coro_cctx *next;
194 174
195 /* the stack */ 175 /* the stack */
196 void *sptr; 176 void *sptr;
197 size_t ssize; 177 size_t ssize;
… …
200 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 180 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
201 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 181 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
202 JMPENV *top_env; 182 JMPENV *top_env;
203 coro_context cctx; 183 coro_context cctx;
204 184
185 U32 gen;
205#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
206 int valgrind_id; 187 int valgrind_id;
207#endif 188#endif
208 unsigned char flags; 189 unsigned char flags;
209} coro_cctx; 190} coro_cctx;
210 191
192coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
211enum { 196enum {
212 CF_RUNNING = 0x0001, /* coroutine is running */ 197 CF_RUNNING = 0x0001, /* coroutine is running */
213 CF_READY = 0x0002, /* coroutine is ready */ 198 CF_READY = 0x0002, /* coroutine is ready */
214 CF_NEW = 0x0004, /* has never been switched to */ 199 CF_NEW = 0x0004, /* has never been switched to */
215 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 200 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
201 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
216}; 202};
217 203
218/* the structure where most of the perl state is stored, overlaid on the cxstack */ 204/* the structure where most of the perl state is stored, overlaid on the cxstack */
219typedef struct { 205typedef struct
206{
220 SV *defsv; 207 SV *defsv;
221 AV *defav; 208 AV *defav;
222 SV *errsv; 209 SV *errsv;
223 SV *irsgv; 210 SV *irsgv;
211 HV *hinthv;
224#define VAR(name,type) type name; 212#define VAR(name,type) type name;
225# include "state.h" 213# include "state.h"
226#undef VAR 214#undef VAR
227} perl_slots; 215} perl_slots;
228 216
229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 217#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
230 218
231/* this is a structure representing a perl-level coroutine */ 219/* this is a structure representing a perl-level coroutine */
232struct coro { 220struct coro {
233 /* the c coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
234 coro_cctx *cctx; 222 coro_cctx *cctx;
235 223
236 /* process data */ 224 /* ready queue */
225 struct coro *next_ready;
226
227 /* state data */
228 struct CoroSLF slf_frame; /* saved slf frame */
237 AV *mainstack; 229 AV *mainstack;
238 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
239 231
232 CV *startcv; /* the CV to execute */
240 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
241 int refcnt; /* coroutines are refcounted, yes */ 234 int refcnt; /* coroutines are refcounted, yes */
242 int flags; /* CF_ flags */ 235 int flags; /* CF_ flags */
243 HV *hv; /* the perl hash associated with this coro, if any */ 236 HV *hv; /* the perl hash associated with this coro, if any */
237 void (*on_destroy)(pTHX_ struct coro *coro);
244 238
245 /* statistics */ 239 /* statistics */
246 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
247 241
248 /* coro process data */ 242 /* coro process data */
249 int prio; 243 int prio;
250 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb;
251 246
252 /* async_pool */ 247 /* async_pool */
253 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter;
254 AV *on_leave;
255
256 /* times */
257 coro_ts t_cpu, t_real;
254 258
255 /* linked list */ 259 /* linked list */
256 struct coro *next, *prev; 260 struct coro *next, *prev;
257}; 261};
258 262
259typedef struct coro *Coro__State; 263typedef struct coro *Coro__State;
260typedef struct coro *Coro__State_or_hashref; 264typedef struct coro *Coro__State_or_hashref;
261 265
266/* the following variables are effectively part of the perl context */
267/* and get copied between struct coro and these variables */
268/* the mainr easonw e don't support windows process emulation */
269static struct CoroSLF slf_frame; /* the current slf frame */
270
262/** Coro ********************************************************************/ 271/** Coro ********************************************************************/
263 272
264#define PRIO_MAX 3 273#define CORO_PRIO_MAX 3
265#define PRIO_HIGH 1 274#define CORO_PRIO_HIGH 1
266#define PRIO_NORMAL 0 275#define CORO_PRIO_NORMAL 0
267#define PRIO_LOW -1 276#define CORO_PRIO_LOW -1
268#define PRIO_IDLE -3 277#define CORO_PRIO_IDLE -3
269#define PRIO_MIN -4 278#define CORO_PRIO_MIN -4
270 279
271/* for Coro.pm */ 280/* for Coro.pm */
272static SV *coro_current; 281static SV *coro_current;
273static SV *coro_readyhook; 282static SV *coro_readyhook;
274static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 283static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
275static int coro_nready; 284static CV *cv_coro_run, *cv_coro_terminate;
276static struct coro *coro_first; 285static struct coro *coro_first;
286#define coro_nready coroapi.nready
277 287
278/** lowlevel stuff **********************************************************/ 288/** lowlevel stuff **********************************************************/
279 289
280static SV * 290static SV *
281coro_get_sv (pTHX_ const char *name, int create) 291coro_get_sv (pTHX_ const char *name, int create)
… …
305 get_hv (name, create); 315 get_hv (name, create);
306#endif 316#endif
307 return get_hv (name, create); 317 return get_hv (name, create);
308} 318}
309 319
320INLINE void
321coro_times_update ()
322{
323#ifdef coro_clock_gettime
324 struct timespec ts;
325
326 ts.tv_sec = ts.tv_nsec = 0;
327 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
328 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
329
330 ts.tv_sec = ts.tv_nsec = 0;
331 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
332 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
333#else
334 dTHX;
335 UV tv[2];
336
337 u2time (aTHX_ tv);
338 time_real [0] = tv [0];
339 time_real [1] = tv [1] * 1000;
340#endif
341}
342
343INLINE void
344coro_times_add (struct coro *c)
345{
346 c->t_real [1] += time_real [1];
347 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
348 c->t_real [0] += time_real [0];
349
350 c->t_cpu [1] += time_cpu [1];
351 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
352 c->t_cpu [0] += time_cpu [0];
353}
354
355INLINE void
356coro_times_sub (struct coro *c)
357{
358 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
359 c->t_real [1] -= time_real [1];
360 c->t_real [0] -= time_real [0];
361
362 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
363 c->t_cpu [1] -= time_cpu [1];
364 c->t_cpu [0] -= time_cpu [0];
365}
366
367/*****************************************************************************/
368/* magic glue */
369
370#define CORO_MAGIC_type_cv 26
371#define CORO_MAGIC_type_state PERL_MAGIC_ext
372
373#define CORO_MAGIC_NN(sv, type) \
374 (expect_true (SvMAGIC (sv)->mg_type == type) \
375 ? SvMAGIC (sv) \
376 : mg_find (sv, type))
377
378#define CORO_MAGIC(sv, type) \
379 (expect_true (SvMAGIC (sv)) \
380 ? CORO_MAGIC_NN (sv, type) \
381 : 0)
382
383#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
384#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
385
386INLINE struct coro *
387SvSTATE_ (pTHX_ SV *coro)
388{
389 HV *stash;
390 MAGIC *mg;
391
392 if (SvROK (coro))
393 coro = SvRV (coro);
394
395 if (expect_false (SvTYPE (coro) != SVt_PVHV))
396 croak ("Coro::State object required");
397
398 stash = SvSTASH (coro);
399 if (expect_false (stash != coro_stash && stash != coro_state_stash))
400 {
401 /* very slow, but rare, check */
402 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
403 croak ("Coro::State object required");
404 }
405
406 mg = CORO_MAGIC_state (coro);
407 return (struct coro *)mg->mg_ptr;
408}
409
410#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
411
412/* faster than SvSTATE, but expects a coroutine hv */
413#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
414#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
415
416/*****************************************************************************/
417/* padlist management and caching */
418
310static AV * 419static AV *
311coro_clone_padlist (pTHX_ CV *cv) 420coro_derive_padlist (pTHX_ CV *cv)
312{ 421{
313 AV *padlist = CvPADLIST (cv); 422 AV *padlist = CvPADLIST (cv);
314 AV *newpadlist, *newpad; 423 AV *newpadlist, *newpad;
315 424
316 newpadlist = newAV (); 425 newpadlist = newAV ();
… …
321 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 430 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
322#endif 431#endif
323 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 432 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
324 --AvFILLp (padlist); 433 --AvFILLp (padlist);
325 434
326 av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); 435 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
327 av_store (newpadlist, 1, (SV *)newpad); 436 av_store (newpadlist, 1, (SV *)newpad);
328 437
329 return newpadlist; 438 return newpadlist;
330} 439}
331 440
332static void 441static void
333free_padlist (pTHX_ AV *padlist) 442free_padlist (pTHX_ AV *padlist)
334{ 443{
335 /* may be during global destruction */ 444 /* may be during global destruction */
336 if (SvREFCNT (padlist)) 445 if (!IN_DESTRUCT)
337 { 446 {
338 I32 i = AvFILLp (padlist); 447 I32 i = AvFILLp (padlist);
339 while (i >= 0) 448
449 while (i > 0) /* special-case index 0 */
340 { 450 {
341 SV **svp = av_fetch (padlist, i--, FALSE); 451 /* we try to be extra-careful here */
342 if (svp) 452 AV *av = (AV *)AvARRAY (padlist)[i--];
343 { 453 I32 j = AvFILLp (av);
344 SV *sv; 454
345 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 455 while (j >= 0)
456 SvREFCNT_dec (AvARRAY (av)[j--]);
457
458 AvFILLp (av) = -1;
346 SvREFCNT_dec (sv); 459 SvREFCNT_dec (av);
347
348 SvREFCNT_dec (*svp);
349 }
350 } 460 }
351 461
462 SvREFCNT_dec (AvARRAY (padlist)[0]);
463
464 AvFILLp (padlist) = -1;
352 SvREFCNT_dec ((SV*)padlist); 465 SvREFCNT_dec ((SV*)padlist);
353 } 466 }
354} 467}
355 468
356static int 469static int
357coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 470coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
358{ 471{
359 AV *padlist; 472 AV *padlist;
360 AV *av = (AV *)mg->mg_obj; 473 AV *av = (AV *)mg->mg_obj;
474
475 /* perl manages to free our internal AV and _then_ call us */
476 if (IN_DESTRUCT)
477 return 0;
361 478
362 /* casting is fun. */ 479 /* casting is fun. */
363 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 480 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
364 free_padlist (aTHX_ padlist); 481 free_padlist (aTHX_ padlist);
365 482
366 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 483 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
367 484
368 return 0; 485 return 0;
369} 486}
370
371#define CORO_MAGIC_type_cv PERL_MAGIC_ext
372#define CORO_MAGIC_type_state PERL_MAGIC_ext
373 487
374static MGVTBL coro_cv_vtbl = { 488static MGVTBL coro_cv_vtbl = {
375 0, 0, 0, 0, 489 0, 0, 0, 0,
376 coro_cv_free 490 coro_cv_free
377}; 491};
378
379#define CORO_MAGIC(sv,type) \
380 SvMAGIC (sv) \
381 ? SvMAGIC (sv)->mg_type == type \
382 ? SvMAGIC (sv) \
383 : mg_find (sv, type) \
384 : 0
385
386#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
387#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
388
389static struct coro *
390SvSTATE_ (pTHX_ SV *coro)
391{
392 HV *stash;
393 MAGIC *mg;
394
395 if (SvROK (coro))
396 coro = SvRV (coro);
397
398 if (expect_false (SvTYPE (coro) != SVt_PVHV))
399 croak ("Coro::State object required");
400
401 stash = SvSTASH (coro);
402 if (expect_false (stash != coro_stash && stash != coro_state_stash))
403 {
404 /* very slow, but rare, check */
405 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
406 croak ("Coro::State object required");
407 }
408
409 mg = CORO_MAGIC_state (coro);
410 return (struct coro *)mg->mg_ptr;
411}
412
413#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
414 492
415/* the next two functions merely cache the padlists */ 493/* the next two functions merely cache the padlists */
416static void 494static void
417get_padlist (pTHX_ CV *cv) 495get_padlist (pTHX_ CV *cv)
418{ 496{
… …
424 else 502 else
425 { 503 {
426#if CORO_PREFER_PERL_FUNCTIONS 504#if CORO_PREFER_PERL_FUNCTIONS
427 /* this is probably cleaner? but also slower! */ 505 /* this is probably cleaner? but also slower! */
428 /* in practise, it seems to be less stable */ 506 /* in practise, it seems to be less stable */
429 CV *cp = Perl_cv_clone (cv); 507 CV *cp = Perl_cv_clone (aTHX_ cv);
430 CvPADLIST (cv) = CvPADLIST (cp); 508 CvPADLIST (cv) = CvPADLIST (cp);
431 CvPADLIST (cp) = 0; 509 CvPADLIST (cp) = 0;
432 SvREFCNT_dec (cp); 510 SvREFCNT_dec (cp);
433#else 511#else
434 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 512 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
435#endif 513#endif
436 } 514 }
437} 515}
438 516
439static void 517static void
… …
446 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 524 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
447 525
448 av = (AV *)mg->mg_obj; 526 av = (AV *)mg->mg_obj;
449 527
450 if (expect_false (AvFILLp (av) >= AvMAX (av))) 528 if (expect_false (AvFILLp (av) >= AvMAX (av)))
451 av_extend (av, AvMAX (av) + 1); 529 av_extend (av, AvFILLp (av) + 1);
452 530
453 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 531 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
454} 532}
455 533
456/** load & save, init *******************************************************/ 534/** load & save, init *******************************************************/
535
536static void
537on_enterleave_call (pTHX_ SV *cb);
457 538
458static void 539static void
459load_perl (pTHX_ Coro__State c) 540load_perl (pTHX_ Coro__State c)
460{ 541{
461 perl_slots *slot = c->slot; 542 perl_slots *slot = c->slot;
462 c->slot = 0; 543 c->slot = 0;
463 544
464 PL_mainstack = c->mainstack; 545 PL_mainstack = c->mainstack;
465 546
466 GvSV (PL_defgv) = slot->defsv; 547 GvSV (PL_defgv) = slot->defsv;
467 GvAV (PL_defgv) = slot->defav; 548 GvAV (PL_defgv) = slot->defav;
468 GvSV (PL_errgv) = slot->errsv; 549 GvSV (PL_errgv) = slot->errsv;
469 GvSV (irsgv) = slot->irsgv; 550 GvSV (irsgv) = slot->irsgv;
551 GvHV (PL_hintgv) = slot->hinthv;
470 552
471 #define VAR(name,type) PL_ ## name = slot->name; 553 #define VAR(name,type) PL_ ## name = slot->name;
472 # include "state.h" 554 # include "state.h"
473 #undef VAR 555 #undef VAR
474 556
… …
485 CvPADLIST (cv) = (AV *)POPs; 567 CvPADLIST (cv) = (AV *)POPs;
486 } 568 }
487 569
488 PUTBACK; 570 PUTBACK;
489 } 571 }
572
573 slf_frame = c->slf_frame;
574 CORO_THROW = c->except;
575
576 if (expect_false (enable_times))
577 {
578 if (expect_false (!times_valid))
579 coro_times_update ();
580
581 coro_times_sub (c);
582 }
583
584 if (expect_false (c->on_enter))
585 {
586 int i;
587
588 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
589 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
590 }
490} 591}
491 592
492static void 593static void
493save_perl (pTHX_ Coro__State c) 594save_perl (pTHX_ Coro__State c)
494{ 595{
596 if (expect_false (c->on_leave))
597 {
598 int i;
599
600 for (i = AvFILLp (c->on_leave); i >= 0; --i)
601 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
602 }
603
604 times_valid = 0;
605
606 if (expect_false (enable_times))
607 {
608 coro_times_update (); times_valid = 1;
609 coro_times_add (c);
610 }
611
612 c->except = CORO_THROW;
613 c->slf_frame = slf_frame;
614
495 { 615 {
496 dSP; 616 dSP;
497 I32 cxix = cxstack_ix; 617 I32 cxix = cxstack_ix;
498 PERL_CONTEXT *ccstk = cxstack; 618 PERL_CONTEXT *ccstk = cxstack;
499 PERL_SI *top_si = PL_curstackinfo; 619 PERL_SI *top_si = PL_curstackinfo;
… …
509 { 629 {
510 while (expect_true (cxix >= 0)) 630 while (expect_true (cxix >= 0))
511 { 631 {
512 PERL_CONTEXT *cx = &ccstk[cxix--]; 632 PERL_CONTEXT *cx = &ccstk[cxix--];
513 633
514 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 634 if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
515 { 635 {
516 CV *cv = cx->blk_sub.cv; 636 CV *cv = cx->blk_sub.cv;
517 637
518 if (expect_true (CvDEPTH (cv))) 638 if (expect_true (CvDEPTH (cv)))
519 { 639 {
… …
543 /* we manually unroll here, as usually 2 slots is enough */ 663 /* we manually unroll here, as usually 2 slots is enough */
544 if (SLOT_COUNT >= 1) CXINC; 664 if (SLOT_COUNT >= 1) CXINC;
545 if (SLOT_COUNT >= 2) CXINC; 665 if (SLOT_COUNT >= 2) CXINC;
546 if (SLOT_COUNT >= 3) CXINC; 666 if (SLOT_COUNT >= 3) CXINC;
547 { 667 {
548 int i; 668 unsigned int i;
549 for (i = 3; i < SLOT_COUNT; ++i) 669 for (i = 3; i < SLOT_COUNT; ++i)
550 CXINC; 670 CXINC;
551 } 671 }
552 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 672 cxstack_ix -= SLOT_COUNT; /* undo allocation */
553 673
554 c->mainstack = PL_mainstack; 674 c->mainstack = PL_mainstack;
555 675
556 { 676 {
557 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 677 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
558 678
559 slot->defav = GvAV (PL_defgv); 679 slot->defav = GvAV (PL_defgv);
560 slot->defsv = DEFSV; 680 slot->defsv = DEFSV;
561 slot->errsv = ERRSV; 681 slot->errsv = ERRSV;
562 slot->irsgv = GvSV (irsgv); 682 slot->irsgv = GvSV (irsgv);
683 slot->hinthv = GvHV (PL_hintgv);
563 684
564 #define VAR(name,type) slot->name = PL_ ## name; 685 #define VAR(name,type) slot->name = PL_ ## name;
565 # include "state.h" 686 # include "state.h"
566 #undef VAR 687 #undef VAR
567 } 688 }
568} 689}
569 690
570/* 691/*
571 * allocate various perl stacks. This is an exact copy 692 * allocate various perl stacks. This is almost an exact copy
572 * of perl.c:init_stacks, except that it uses less memory 693 * of perl.c:init_stacks, except that it uses less memory
573 * on the (sometimes correct) assumption that coroutines do 694 * on the (sometimes correct) assumption that coroutines do
574 * not usually need a lot of stackspace. 695 * not usually need a lot of stackspace.
575 */ 696 */
576#if CORO_PREFER_PERL_FUNCTIONS 697#if CORO_PREFER_PERL_FUNCTIONS
577# define coro_init_stacks init_stacks 698# define coro_init_stacks(thx) init_stacks ()
578#else 699#else
579static void 700static void
580coro_init_stacks (pTHX) 701coro_init_stacks (pTHX)
581{ 702{
582 PL_curstackinfo = new_stackinfo(32, 8); 703 PL_curstackinfo = new_stackinfo(32, 8);
… …
619 740
620/* 741/*
621 * destroy the stacks, the callchain etc... 742 * destroy the stacks, the callchain etc...
622 */ 743 */
623static void 744static void
624coro_destroy_stacks (pTHX) 745coro_destruct_stacks (pTHX)
625{ 746{
626 while (PL_curstackinfo->si_next) 747 while (PL_curstackinfo->si_next)
627 PL_curstackinfo = PL_curstackinfo->si_next; 748 PL_curstackinfo = PL_curstackinfo->si_next;
628 749
629 while (PL_curstackinfo) 750 while (PL_curstackinfo)
… …
645#if !PERL_VERSION_ATLEAST (5,10,0) 766#if !PERL_VERSION_ATLEAST (5,10,0)
646 Safefree (PL_retstack); 767 Safefree (PL_retstack);
647#endif 768#endif
648} 769}
649 770
771#define CORO_RSS \
772 rss += sizeof (SYM (curstackinfo)); \
773 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
774 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
775 rss += SYM (tmps_max) * sizeof (SV *); \
776 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
777 rss += SYM (scopestack_max) * sizeof (I32); \
778 rss += SYM (savestack_max) * sizeof (ANY);
779
650static size_t 780static size_t
651coro_rss (pTHX_ struct coro *coro) 781coro_rss (pTHX_ struct coro *coro)
652{ 782{
653 size_t rss = sizeof (*coro); 783 size_t rss = sizeof (*coro);
654 784
655 if (coro->mainstack) 785 if (coro->mainstack)
656 { 786 {
657 perl_slots tmp_slot;
658 perl_slots *slot;
659
660 if (coro->flags & CF_RUNNING) 787 if (coro->flags & CF_RUNNING)
661 { 788 {
662 slot = &tmp_slot; 789 #define SYM(sym) PL_ ## sym
663 790 CORO_RSS;
664 #define VAR(name,type) slot->name = PL_ ## name;
665 # include "state.h"
666 #undef VAR 791 #undef SYM
667 } 792 }
668 else 793 else
669 slot = coro->slot;
670
671 if (slot)
672 { 794 {
673 rss += sizeof (slot->curstackinfo); 795 #define SYM(sym) coro->slot->sym
674 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 796 CORO_RSS;
675 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 797 #undef SYM
676 rss += slot->tmps_max * sizeof (SV *);
677 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
678 rss += slot->scopestack_max * sizeof (I32);
679 rss += slot->savestack_max * sizeof (ANY);
680
681#if !PERL_VERSION_ATLEAST (5,10,0)
682 rss += slot->retstack_max * sizeof (OP *);
683#endif
684 } 798 }
685 } 799 }
686 800
687 return rss; 801 return rss;
688} 802}
… …
701#endif 815#endif
702 816
703/* 817/*
704 * This overrides the default magic get method of %SIG elements. 818 * This overrides the default magic get method of %SIG elements.
705 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 819 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
706 * and instead of tryign to save and restore the hash elements, we just provide 820 * and instead of trying to save and restore the hash elements, we just provide
707 * readback here. 821 * readback here.
708 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
709 * not expecting this to actually change the hook. This is a potential problem
710 * when a schedule happens then, but we ignore this.
711 */ 822 */
712static int 823static int
713coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 824coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
714{ 825{
715 const char *s = MgPV_nolen_const (mg); 826 const char *s = MgPV_nolen_const (mg);
… …
768 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 879 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
769 880
770 if (svp) 881 if (svp)
771 { 882 {
772 SV *old = *svp; 883 SV *old = *svp;
773 *svp = newSVsv (sv); 884 *svp = SvOK (sv) ? newSVsv (sv) : 0;
774 SvREFCNT_dec (old); 885 SvREFCNT_dec (old);
775 return 0; 886 return 0;
776 } 887 }
777 } 888 }
778 889
779 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 890 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
780} 891}
781 892
782static void 893static void
894prepare_nop (pTHX_ struct coro_transfer_args *ta)
895{
896 /* kind of mega-hacky, but works */
897 ta->next = ta->prev = (struct coro *)ta;
898}
899
900static int
901slf_check_nop (pTHX_ struct CoroSLF *frame)
902{
903 return 0;
904}
905
906static int
907slf_check_repeat (pTHX_ struct CoroSLF *frame)
908{
909 return 1;
910}
911
912static UNOP coro_setup_op;
913
914static void NOINLINE /* noinline to keep it out of the transfer fast path */
783coro_setup (pTHX_ struct coro *coro) 915coro_setup (pTHX_ struct coro *coro)
784{ 916{
785 /* 917 /*
786 * emulate part of the perl startup here. 918 * emulate part of the perl startup here.
787 */ 919 */
… …
789 921
790 PL_runops = RUNOPS_DEFAULT; 922 PL_runops = RUNOPS_DEFAULT;
791 PL_curcop = &PL_compiling; 923 PL_curcop = &PL_compiling;
792 PL_in_eval = EVAL_NULL; 924 PL_in_eval = EVAL_NULL;
793 PL_comppad = 0; 925 PL_comppad = 0;
926 PL_comppad_name = 0;
927 PL_comppad_name_fill = 0;
928 PL_comppad_name_floor = 0;
794 PL_curpm = 0; 929 PL_curpm = 0;
795 PL_curpad = 0; 930 PL_curpad = 0;
796 PL_localizing = 0; 931 PL_localizing = 0;
797 PL_dirty = 0; 932 PL_dirty = 0;
798 PL_restartop = 0; 933 PL_restartop = 0;
799#if PERL_VERSION_ATLEAST (5,10,0) 934#if PERL_VERSION_ATLEAST (5,10,0)
800 PL_parser = 0; 935 PL_parser = 0;
801#endif 936#endif
937 PL_hints = 0;
802 938
803 /* recreate the die/warn hooks */ 939 /* recreate the die/warn hooks */
804 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 940 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
805 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 941 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
806 942
807 GvSV (PL_defgv) = newSV (0); 943 GvSV (PL_defgv) = newSV (0);
808 GvAV (PL_defgv) = coro->args; coro->args = 0; 944 GvAV (PL_defgv) = coro->args; coro->args = 0;
809 GvSV (PL_errgv) = newSV (0); 945 GvSV (PL_errgv) = newSV (0);
810 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 946 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
947 GvHV (PL_hintgv) = 0;
811 PL_rs = newSVsv (GvSV (irsgv)); 948 PL_rs = newSVsv (GvSV (irsgv));
812 PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); 949 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
813 950
814 { 951 {
815 dSP; 952 dSP;
816 LOGOP myop; 953 UNOP myop;
817 954
818 Zero (&myop, 1, LOGOP); 955 Zero (&myop, 1, UNOP);
819 myop.op_next = Nullop; 956 myop.op_next = Nullop;
957 myop.op_type = OP_ENTERSUB;
820 myop.op_flags = OPf_WANT_VOID; 958 myop.op_flags = OPf_WANT_VOID;
821 959
822 PUSHMARK (SP); 960 PUSHMARK (SP);
823 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 961 PUSHs ((SV *)coro->startcv);
824 PUTBACK; 962 PUTBACK;
825 PL_op = (OP *)&myop; 963 PL_op = (OP *)&myop;
826 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 964 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
827 SPAGAIN;
828 } 965 }
829 966
830 /* this newly created coroutine might be run on an existing cctx which most 967 /* this newly created coroutine might be run on an existing cctx which most
831 * likely was suspended in set_stacklevel, called from entersub. 968 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
832 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
833 * so we ENTER here for symmetry
834 */ 969 */
835 ENTER; 970 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
836} 971 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
837 972
973 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974 coro_setup_op.op_next = PL_op;
975 coro_setup_op.op_type = OP_ENTERSUB;
976 coro_setup_op.op_ppaddr = pp_slf;
977 /* no flags etc. required, as an init function won't be called */
978
979 PL_op = (OP *)&coro_setup_op;
980
981 /* copy throw, in case it was set before coro_setup */
982 CORO_THROW = coro->except;
983
984 if (expect_false (enable_times))
985 {
986 coro_times_update ();
987 coro_times_sub (coro);
988 }
989}
990
838static void 991static void
839coro_destroy (pTHX_ struct coro *coro) 992coro_unwind_stacks (pTHX)
840{ 993{
841 if (!IN_DESTRUCT) 994 if (!IN_DESTRUCT)
842 { 995 {
843 /* restore all saved variables and stuff */ 996 /* restore all saved variables and stuff */
844 LEAVE_SCOPE (0); 997 LEAVE_SCOPE (0);
… …
852 POPSTACK_TO (PL_mainstack); 1005 POPSTACK_TO (PL_mainstack);
853 1006
854 /* unwind main stack */ 1007 /* unwind main stack */
855 dounwind (-1); 1008 dounwind (-1);
856 } 1009 }
1010}
857 1011
858 SvREFCNT_dec (GvSV (PL_defgv)); 1012static void
859 SvREFCNT_dec (GvAV (PL_defgv)); 1013coro_destruct_perl (pTHX_ struct coro *coro)
860 SvREFCNT_dec (GvSV (PL_errgv)); 1014{
861 SvREFCNT_dec (PL_defoutgv); 1015 SV *svf [9];
862 SvREFCNT_dec (PL_rs);
863 SvREFCNT_dec (GvSV (irsgv));
864 1016
865 SvREFCNT_dec (PL_diehook);
866 SvREFCNT_dec (PL_warnhook);
867 1017 {
1018 struct coro *current = SvSTATE_current;
1019
1020 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1021
1022 save_perl (aTHX_ current);
1023 load_perl (aTHX_ coro);
1024
1025 coro_unwind_stacks (aTHX);
1026 coro_destruct_stacks (aTHX);
1027
1028 // now save some sv's to be free'd later
1029 svf [0] = GvSV (PL_defgv);
1030 svf [1] = (SV *)GvAV (PL_defgv);
1031 svf [2] = GvSV (PL_errgv);
1032 svf [3] = (SV *)PL_defoutgv;
1033 svf [4] = PL_rs;
1034 svf [5] = GvSV (irsgv);
1035 svf [6] = (SV *)GvHV (PL_hintgv);
1036 svf [7] = PL_diehook;
1037 svf [8] = PL_warnhook;
1038 assert (9 == sizeof (svf) / sizeof (*svf));
1039
1040 load_perl (aTHX_ current);
1041 }
1042
1043 {
1044 unsigned int i;
1045
1046 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1047 SvREFCNT_dec (svf [i]);
1048
868 SvREFCNT_dec (coro->saved_deffh); 1049 SvREFCNT_dec (coro->saved_deffh);
869 SvREFCNT_dec (coro->throw); 1050 SvREFCNT_dec (coro->rouse_cb);
870 1051 SvREFCNT_dec (coro->invoke_cb);
871 coro_destroy_stacks (aTHX); 1052 SvREFCNT_dec (coro->invoke_av);
1053 }
872} 1054}
873 1055
874static void 1056INLINE void
875free_coro_mortal (pTHX) 1057free_coro_mortal (pTHX)
876{ 1058{
877 if (expect_true (coro_mortal)) 1059 if (expect_true (coro_mortal))
878 { 1060 {
879 SvREFCNT_dec (coro_mortal); 1061 SvREFCNT_dec (coro_mortal);
… …
884static int 1066static int
885runops_trace (pTHX) 1067runops_trace (pTHX)
886{ 1068{
887 COP *oldcop = 0; 1069 COP *oldcop = 0;
888 int oldcxix = -2; 1070 int oldcxix = -2;
889 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
890 coro_cctx *cctx = coro->cctx;
891 1071
892 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1072 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
893 { 1073 {
894 PERL_ASYNC_CHECK (); 1074 PERL_ASYNC_CHECK ();
895 1075
896 if (cctx->flags & CC_TRACE_ALL) 1076 if (cctx_current->flags & CC_TRACE_ALL)
897 { 1077 {
898 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1078 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
899 { 1079 {
900 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1080 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
901 SV **bot, **top; 1081 SV **bot, **top;
902 AV *av = newAV (); /* return values */ 1082 AV *av = newAV (); /* return values */
903 SV **cb; 1083 SV **cb;
… …
913 : cx->blk_gimme == G_SCALAR ? bot + 1 1093 : cx->blk_gimme == G_SCALAR ? bot + 1
914 : bot; 1094 : bot;
915 1095
916 av_extend (av, top - bot); 1096 av_extend (av, top - bot);
917 while (bot < top) 1097 while (bot < top)
918 av_push (av, SvREFCNT_inc (*bot++)); 1098 av_push (av, SvREFCNT_inc_NN (*bot++));
919 1099
920 PL_runops = RUNOPS_DEFAULT; 1100 PL_runops = RUNOPS_DEFAULT;
921 ENTER; 1101 ENTER;
922 SAVETMPS; 1102 SAVETMPS;
923 EXTEND (SP, 3); 1103 EXTEND (SP, 3);
… …
940 1120
941 if (PL_curcop != &PL_compiling) 1121 if (PL_curcop != &PL_compiling)
942 { 1122 {
943 SV **cb; 1123 SV **cb;
944 1124
945 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1125 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
946 { 1126 {
947 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1127 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
948 1128
949 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1129 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
950 { 1130 {
951 runops_proc_t old_runops = PL_runops;
952 dSP; 1131 dSP;
953 GV *gv = CvGV (cx->blk_sub.cv); 1132 GV *gv = CvGV (cx->blk_sub.cv);
954 SV *fullname = sv_2mortal (newSV (0)); 1133 SV *fullname = sv_2mortal (newSV (0));
955 1134
956 if (isGV (gv)) 1135 if (isGV (gv))
… …
961 SAVETMPS; 1140 SAVETMPS;
962 EXTEND (SP, 3); 1141 EXTEND (SP, 3);
963 PUSHMARK (SP); 1142 PUSHMARK (SP);
964 PUSHs (&PL_sv_yes); 1143 PUSHs (&PL_sv_yes);
965 PUSHs (fullname); 1144 PUSHs (fullname);
966 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1145 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
967 PUTBACK; 1146 PUTBACK;
968 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1147 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
969 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1148 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
970 SPAGAIN; 1149 SPAGAIN;
971 FREETMPS; 1150 FREETMPS;
… …
974 } 1153 }
975 1154
976 oldcxix = cxstack_ix; 1155 oldcxix = cxstack_ix;
977 } 1156 }
978 1157
979 if (cctx->flags & CC_TRACE_LINE) 1158 if (cctx_current->flags & CC_TRACE_LINE)
980 { 1159 {
981 dSP; 1160 dSP;
982 1161
983 PL_runops = RUNOPS_DEFAULT; 1162 PL_runops = RUNOPS_DEFAULT;
984 ENTER; 1163 ENTER;
… …
1003 1182
1004 TAINT_NOT; 1183 TAINT_NOT;
1005 return 0; 1184 return 0;
1006} 1185}
1007 1186
1008/* inject a fake call to Coro::State::_cctx_init into the execution */ 1187static struct CoroSLF cctx_ssl_frame;
1009/* _cctx_init should be careful, as it could be called at almost any time */ 1188
1010/* during execution of a perl program */ 1189static void
1190slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1191{
1192 ta->prev = 0;
1193}
1194
1195static int
1196slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1197{
1198 *frame = cctx_ssl_frame;
1199
1200 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1201}
1202
1203/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1011static void NOINLINE 1204static void NOINLINE
1012cctx_prepare (pTHX_ coro_cctx *cctx) 1205cctx_prepare (pTHX)
1013{ 1206{
1014 dSP;
1015 LOGOP myop;
1016
1017 PL_top_env = &PL_start_env; 1207 PL_top_env = &PL_start_env;
1018 1208
1019 if (cctx->flags & CC_TRACE) 1209 if (cctx_current->flags & CC_TRACE)
1020 PL_runops = runops_trace; 1210 PL_runops = runops_trace;
1021 1211
1022 Zero (&myop, 1, LOGOP); 1212 /* we already must be executing an SLF op, there is no other valid way
1023 myop.op_next = PL_op; 1213 * that can lead to creation of a new cctx */
1024 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1214 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1215 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1025 1216
1026 PUSHMARK (SP); 1217 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1027 EXTEND (SP, 2); 1218 cctx_ssl_frame = slf_frame;
1028 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1219
1029 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1220 slf_frame.prepare = slf_prepare_set_stacklevel;
1030 PUTBACK; 1221 slf_frame.check = slf_check_set_stacklevel;
1031 PL_op = (OP *)&myop; 1222}
1032 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1223
1033 SPAGAIN; 1224/* the tail of transfer: execute stuff we can only do after a transfer */
1225INLINE void
1226transfer_tail (pTHX)
1227{
1228 free_coro_mortal (aTHX);
1034} 1229}
1035 1230
1036/* 1231/*
1037 * this is a _very_ stripped down perl interpreter ;) 1232 * this is a _very_ stripped down perl interpreter ;)
1038 */ 1233 */
1039static void 1234static void
1040cctx_run (void *arg) 1235cctx_run (void *arg)
1041{ 1236{
1237#ifdef USE_ITHREADS
1238# if CORO_PTHREAD
1239 PERL_SET_CONTEXT (coro_thx);
1240# endif
1241#endif
1242 {
1042 dTHX; 1243 dTHX;
1043 1244
1044 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1245 /* normally we would need to skip the entersub here */
1045 UNLOCK; 1246 /* not doing so will re-execute it, which is exactly what we want */
1046
1047 /* we now skip the entersub that lead to transfer() */
1048 PL_op = PL_op->op_next; 1247 /* PL_nop = PL_nop->op_next */
1049 1248
1050 /* inject a fake subroutine call to cctx_init */ 1249 /* inject a fake subroutine call to cctx_init */
1051 cctx_prepare (aTHX_ (coro_cctx *)arg); 1250 cctx_prepare (aTHX);
1052 1251
1252 /* cctx_run is the alternative tail of transfer() */
1253 transfer_tail (aTHX);
1254
1053 /* somebody or something will hit me for both perl_run and PL_restartop */ 1255 /* somebody or something will hit me for both perl_run and PL_restartop */
1054 PL_restartop = PL_op; 1256 PL_restartop = PL_op;
1055 perl_run (PL_curinterp); 1257 perl_run (PL_curinterp);
1056
1057 /* 1258 /*
1259 * Unfortunately, there is no way to get at the return values of the
1260 * coro body here, as perl_run destroys these
1261 */
1262
1263 /*
1058 * If perl-run returns we assume exit() was being called or the coro 1264 * If perl-run returns we assume exit() was being called or the coro
1059 * fell off the end, which seems to be the only valid (non-bug) 1265 * fell off the end, which seems to be the only valid (non-bug)
1060 * reason for perl_run to return. We try to exit by jumping to the 1266 * reason for perl_run to return. We try to exit by jumping to the
1061 * bootstrap-time "top" top_env, as we cannot restore the "main" 1267 * bootstrap-time "top" top_env, as we cannot restore the "main"
1062 * coroutine as Coro has no such concept 1268 * coroutine as Coro has no such concept.
1269 * This actually isn't valid with the pthread backend, but OSes requiring
1270 * that backend are too broken to do it in a standards-compliant way.
1063 */ 1271 */
1064 PL_top_env = main_top_env; 1272 PL_top_env = main_top_env;
1065 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1273 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1274 }
1066} 1275}
1067 1276
1068static coro_cctx * 1277static coro_cctx *
1069cctx_new () 1278cctx_new ()
1070{ 1279{
1071 coro_cctx *cctx; 1280 coro_cctx *cctx;
1281
1282 ++cctx_count;
1283 New (0, cctx, 1, coro_cctx);
1284
1285 cctx->gen = cctx_gen;
1286 cctx->flags = 0;
1287 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1288
1289 return cctx;
1290}
1291
1292/* create a new cctx only suitable as source */
1293static coro_cctx *
1294cctx_new_empty ()
1295{
1296 coro_cctx *cctx = cctx_new ();
1297
1298 cctx->sptr = 0;
1299 coro_create (&cctx->cctx, 0, 0, 0, 0);
1300
1301 return cctx;
1302}
1303
1304/* create a new cctx suitable as destination/running a perl interpreter */
1305static coro_cctx *
1306cctx_new_run ()
1307{
1308 coro_cctx *cctx = cctx_new ();
1072 void *stack_start; 1309 void *stack_start;
1073 size_t stack_size; 1310 size_t stack_size;
1074 1311
1075 ++cctx_count;
1076
1077 Newz (0, cctx, 1, coro_cctx);
1078
1079#if HAVE_MMAP 1312#if HAVE_MMAP
1080 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1313 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1081 /* mmap supposedly does allocate-on-write for us */ 1314 /* mmap supposedly does allocate-on-write for us */
1082 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1315 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1083 1316
1084 if (cctx->sptr != (void *)-1) 1317 if (cctx->sptr != (void *)-1)
1085 { 1318 {
1086# if CORO_STACKGUARD 1319 #if CORO_STACKGUARD
1087 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1320 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1088# endif 1321 #endif
1089 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1322 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1090 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1323 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1091 cctx->flags |= CC_MAPPED; 1324 cctx->flags |= CC_MAPPED;
1092 } 1325 }
1093 else 1326 else
1094#endif 1327#endif
1095 { 1328 {
1096 cctx->ssize = coro_stacksize * (long)sizeof (long); 1329 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1097 New (0, cctx->sptr, coro_stacksize, long); 1330 New (0, cctx->sptr, cctx_stacksize, long);
1098 1331
1099 if (!cctx->sptr) 1332 if (!cctx->sptr)
1100 { 1333 {
1101 perror ("FATAL: unable to allocate stack for coroutine"); 1334 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1102 _exit (EXIT_FAILURE); 1335 _exit (EXIT_FAILURE);
1103 } 1336 }
1104 1337
1105 stack_start = cctx->sptr; 1338 stack_start = cctx->sptr;
1106 stack_size = cctx->ssize; 1339 stack_size = cctx->ssize;
1107 } 1340 }
1108 1341
1109 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1342 #if CORO_USE_VALGRIND
1343 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1344 #endif
1345
1110 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1346 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1111 1347
1112 return cctx; 1348 return cctx;
1113} 1349}
1114 1350
… …
1116cctx_destroy (coro_cctx *cctx) 1352cctx_destroy (coro_cctx *cctx)
1117{ 1353{
1118 if (!cctx) 1354 if (!cctx)
1119 return; 1355 return;
1120 1356
1357 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1358
1121 --cctx_count; 1359 --cctx_count;
1360 coro_destroy (&cctx->cctx);
1122 1361
1362 /* coro_transfer creates new, empty cctx's */
1363 if (cctx->sptr)
1364 {
1123#if CORO_USE_VALGRIND 1365 #if CORO_USE_VALGRIND
1124 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1366 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1367 #endif
1368
1369#if HAVE_MMAP
1370 if (cctx->flags & CC_MAPPED)
1371 munmap (cctx->sptr, cctx->ssize);
1372 else
1125#endif 1373#endif
1126
1127#if HAVE_MMAP
1128 if (cctx->flags & CC_MAPPED)
1129 munmap (cctx->sptr, cctx->ssize);
1130 else
1131#endif
1132 Safefree (cctx->sptr); 1374 Safefree (cctx->sptr);
1375 }
1133 1376
1134 Safefree (cctx); 1377 Safefree (cctx);
1135} 1378}
1136 1379
1137/* wether this cctx should be destructed */ 1380/* wether this cctx should be destructed */
1138#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1381#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1139 1382
1140static coro_cctx * 1383static coro_cctx *
1141cctx_get (pTHX) 1384cctx_get (pTHX)
1142{ 1385{
1143 while (expect_true (cctx_first)) 1386 while (expect_true (cctx_first))
… …
1150 return cctx; 1393 return cctx;
1151 1394
1152 cctx_destroy (cctx); 1395 cctx_destroy (cctx);
1153 } 1396 }
1154 1397
1155 return cctx_new (); 1398 return cctx_new_run ();
1156} 1399}
1157 1400
1158static void 1401static void
1159cctx_put (coro_cctx *cctx) 1402cctx_put (coro_cctx *cctx)
1160{ 1403{
1404 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1405
1161 /* free another cctx if overlimit */ 1406 /* free another cctx if overlimit */
1162 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1407 if (expect_false (cctx_idle >= cctx_max_idle))
1163 { 1408 {
1164 coro_cctx *first = cctx_first; 1409 coro_cctx *first = cctx_first;
1165 cctx_first = first->next; 1410 cctx_first = first->next;
1166 --cctx_idle; 1411 --cctx_idle;
1167 1412
… …
1176/** coroutine switching *****************************************************/ 1421/** coroutine switching *****************************************************/
1177 1422
1178static void 1423static void
1179transfer_check (pTHX_ struct coro *prev, struct coro *next) 1424transfer_check (pTHX_ struct coro *prev, struct coro *next)
1180{ 1425{
1426 /* TODO: throwing up here is considered harmful */
1427
1181 if (expect_true (prev != next)) 1428 if (expect_true (prev != next))
1182 { 1429 {
1183 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1430 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1184 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1431 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1185 1432
1186 if (expect_false (next->flags & CF_RUNNING))
1187 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1188
1189 if (expect_false (next->flags & CF_DESTROYED)) 1433 if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1190 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1434 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1191 1435
1192#if !PERL_VERSION_ATLEAST (5,10,0) 1436#if !PERL_VERSION_ATLEAST (5,10,0)
1193 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1437 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1194 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1438 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1195#endif 1439#endif
1196 } 1440 }
1197} 1441}
1198 1442
1199/* always use the TRANSFER macro */ 1443/* always use the TRANSFER macro */
1200static void NOINLINE 1444static void NOINLINE /* noinline so we have a fixed stackframe */
1201transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1445transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1202{ 1446{
1203 dSTACKLEVEL; 1447 dSTACKLEVEL;
1204 static volatile int has_throw;
1205 1448
1206 /* sometimes transfer is only called to set idle_sp */ 1449 /* sometimes transfer is only called to set idle_sp */
1207 if (expect_false (!next)) 1450 if (expect_false (!prev))
1208 { 1451 {
1209 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1452 cctx_current->idle_sp = STACKLEVEL;
1210 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1453 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1211 } 1454 }
1212 else if (expect_true (prev != next)) 1455 else if (expect_true (prev != next))
1213 { 1456 {
1214 coro_cctx *prev__cctx; 1457 coro_cctx *cctx_prev;
1215 1458
1216 if (expect_false (prev->flags & CF_NEW)) 1459 if (expect_false (prev->flags & CF_NEW))
1217 { 1460 {
1218 /* create a new empty context */ 1461 /* create a new empty/source context */
1219 Newz (0, prev->cctx, 1, coro_cctx);
1220 prev->flags &= ~CF_NEW; 1462 prev->flags &= ~CF_NEW;
1221 prev->flags |= CF_RUNNING; 1463 prev->flags |= CF_RUNNING;
1222 } 1464 }
1223 1465
1224 prev->flags &= ~CF_RUNNING; 1466 prev->flags &= ~CF_RUNNING;
1225 next->flags |= CF_RUNNING; 1467 next->flags |= CF_RUNNING;
1226
1227 LOCK;
1228 1468
1229 /* first get rid of the old state */ 1469 /* first get rid of the old state */
1230 save_perl (aTHX_ prev); 1470 save_perl (aTHX_ prev);
1231 1471
1232 if (expect_false (next->flags & CF_NEW)) 1472 if (expect_false (next->flags & CF_NEW))
… …
1237 coro_setup (aTHX_ next); 1477 coro_setup (aTHX_ next);
1238 } 1478 }
1239 else 1479 else
1240 load_perl (aTHX_ next); 1480 load_perl (aTHX_ next);
1241 1481
1242 prev__cctx = prev->cctx;
1243
1244 /* possibly "free" the cctx */ 1482 /* possibly untie and reuse the cctx */
1245 if (expect_true ( 1483 if (expect_true (
1246 prev__cctx->idle_sp == STACKLEVEL 1484 cctx_current->idle_sp == STACKLEVEL
1247 && !(prev__cctx->flags & CC_TRACE) 1485 && !(cctx_current->flags & CC_TRACE)
1248 && !force_cctx 1486 && !force_cctx
1249 )) 1487 ))
1250 { 1488 {
1251 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1489 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1252 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1490 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1253 1491
1254 prev->cctx = 0;
1255
1256 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1492 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1257 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1493 /* without this the next cctx_get might destroy the running cctx while still in use */
1258 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1494 if (expect_false (CCTX_EXPIRED (cctx_current)))
1259 if (!next->cctx) 1495 if (expect_true (!next->cctx))
1260 next->cctx = cctx_get (aTHX); 1496 next->cctx = cctx_get (aTHX);
1261 1497
1262 cctx_put (prev__cctx); 1498 cctx_put (cctx_current);
1263 } 1499 }
1500 else
1501 prev->cctx = cctx_current;
1264 1502
1265 ++next->usecount; 1503 ++next->usecount;
1266 1504
1267 if (expect_true (!next->cctx)) 1505 cctx_prev = cctx_current;
1268 next->cctx = cctx_get (aTHX); 1506 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1269 1507
1270 has_throw = !!next->throw; 1508 next->cctx = 0;
1271 1509
1272 if (expect_false (prev__cctx != next->cctx)) 1510 if (expect_false (cctx_prev != cctx_current))
1273 { 1511 {
1274 prev__cctx->top_env = PL_top_env; 1512 cctx_prev->top_env = PL_top_env;
1275 PL_top_env = next->cctx->top_env; 1513 PL_top_env = cctx_current->top_env;
1276 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1514 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1277 } 1515 }
1278 1516
1279 free_coro_mortal (aTHX); 1517 transfer_tail (aTHX);
1280 UNLOCK;
1281
1282 if (expect_false (has_throw))
1283 {
1284 struct coro *coro = SvSTATE (coro_current);
1285
1286 if (coro->throw)
1287 {
1288 SV *exception = coro->throw;
1289 coro->throw = 0;
1290 sv_setsv (ERRSV, exception);
1291 croak (0);
1292 }
1293 }
1294 } 1518 }
1295} 1519}
1296
1297struct transfer_args
1298{
1299 struct coro *prev, *next;
1300};
1301 1520
1302#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1521#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1303#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1522#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1304 1523
1305/** high level stuff ********************************************************/ 1524/** high level stuff ********************************************************/
… …
1307static int 1526static int
1308coro_state_destroy (pTHX_ struct coro *coro) 1527coro_state_destroy (pTHX_ struct coro *coro)
1309{ 1528{
1310 if (coro->flags & CF_DESTROYED) 1529 if (coro->flags & CF_DESTROYED)
1311 return 0; 1530 return 0;
1531
1532 if (coro->on_destroy && !PL_dirty)
1533 coro->on_destroy (aTHX_ coro);
1312 1534
1313 coro->flags |= CF_DESTROYED; 1535 coro->flags |= CF_DESTROYED;
1314 1536
1315 if (coro->flags & CF_READY) 1537 if (coro->flags & CF_READY)
1316 { 1538 {
1317 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1539 /* reduce nready, as destroying a ready coro effectively unreadies it */
1318 /* alternative: look through all ready queues and remove the coro */ 1540 /* alternative: look through all ready queues and remove the coro */
1319 LOCK;
1320 --coro_nready; 1541 --coro_nready;
1321 UNLOCK;
1322 } 1542 }
1323 else 1543 else
1324 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1544 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1325 1545
1326 if (coro->mainstack && coro->mainstack != main_mainstack) 1546 if (coro->mainstack
1327 { 1547 && coro->mainstack != main_mainstack
1328 struct coro temp; 1548 && coro->slot
1329 1549 && !PL_dirty)
1330 if (coro->flags & CF_RUNNING)
1331 croak ("FATAL: tried to destroy currently running coroutine");
1332
1333 save_perl (aTHX_ &temp);
1334 load_perl (aTHX_ coro);
1335
1336 coro_destroy (aTHX_ coro); 1550 coro_destruct_perl (aTHX_ coro);
1337
1338 load_perl (aTHX_ &temp);
1339
1340 coro->slot = 0;
1341 }
1342 1551
1343 cctx_destroy (coro->cctx); 1552 cctx_destroy (coro->cctx);
1553 SvREFCNT_dec (coro->startcv);
1344 SvREFCNT_dec (coro->args); 1554 SvREFCNT_dec (coro->args);
1555 SvREFCNT_dec (CORO_THROW);
1345 1556
1346 if (coro->next) coro->next->prev = coro->prev; 1557 if (coro->next) coro->next->prev = coro->prev;
1347 if (coro->prev) coro->prev->next = coro->next; 1558 if (coro->prev) coro->prev->next = coro->next;
1348 if (coro == coro_first) coro_first = coro->next; 1559 if (coro == coro_first) coro_first = coro->next;
1349 1560
… …
1387# define MGf_DUP 0 1598# define MGf_DUP 0
1388#endif 1599#endif
1389}; 1600};
1390 1601
1391static void 1602static void
1392prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1603prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1393{ 1604{
1394 ta->prev = SvSTATE (prev_sv); 1605 ta->prev = SvSTATE (prev_sv);
1395 ta->next = SvSTATE (next_sv); 1606 ta->next = SvSTATE (next_sv);
1396 TRANSFER_CHECK (*ta); 1607 TRANSFER_CHECK (*ta);
1397} 1608}
1398 1609
1399static void 1610static void
1400api_transfer (SV *prev_sv, SV *next_sv) 1611api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1401{ 1612{
1402 dTHX;
1403 struct transfer_args ta; 1613 struct coro_transfer_args ta;
1404 1614
1405 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1615 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1406 TRANSFER (ta, 1); 1616 TRANSFER (ta, 1);
1407} 1617}
1408 1618
1409/** Coro ********************************************************************/ 1619/** Coro ********************************************************************/
1410 1620
1411static void 1621INLINE void
1412coro_enq (pTHX_ SV *coro_sv) 1622coro_enq (pTHX_ struct coro *coro)
1413{ 1623{
1414 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1624 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1415}
1416 1625
1417static SV * 1626 SvREFCNT_inc_NN (coro->hv);
1627
1628 coro->next_ready = 0;
1629 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1630 ready [1] = coro;
1631}
1632
1633INLINE struct coro *
1418coro_deq (pTHX) 1634coro_deq (pTHX)
1419{ 1635{
1420 int prio; 1636 int prio;
1421 1637
1422 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1638 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1423 if (AvFILLp (coro_ready [prio]) >= 0) 1639 {
1424 return av_shift (coro_ready [prio]); 1640 struct coro **ready = coro_ready [prio];
1641
1642 if (ready [0])
1643 {
1644 struct coro *coro = ready [0];
1645 ready [0] = coro->next_ready;
1646 return coro;
1647 }
1648 }
1425 1649
1426 return 0; 1650 return 0;
1427} 1651}
1428 1652
1429static int 1653static int
1430api_ready (SV *coro_sv) 1654api_ready (pTHX_ SV *coro_sv)
1431{ 1655{
1432 dTHX;
1433 struct coro *coro; 1656 struct coro *coro;
1434 SV *sv_hook; 1657 SV *sv_hook;
1435 void (*xs_hook)(void); 1658 void (*xs_hook)(void);
1436 1659
1437 if (SvROK (coro_sv))
1438 coro_sv = SvRV (coro_sv);
1439
1440 coro = SvSTATE (coro_sv); 1660 coro = SvSTATE (coro_sv);
1441 1661
1442 if (coro->flags & CF_READY) 1662 if (coro->flags & CF_READY)
1443 return 0; 1663 return 0;
1444 1664
1445 coro->flags |= CF_READY; 1665 coro->flags |= CF_READY;
1446 1666
1447 LOCK;
1448
1449 sv_hook = coro_nready ? 0 : coro_readyhook; 1667 sv_hook = coro_nready ? 0 : coro_readyhook;
1450 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1668 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1451 1669
1452 coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); 1670 coro_enq (aTHX_ coro);
1453 ++coro_nready; 1671 ++coro_nready;
1454 1672
1455 UNLOCK;
1456
1457 if (sv_hook) 1673 if (sv_hook)
1458 { 1674 {
1459 dSP; 1675 dSP;
1460 1676
1461 ENTER; 1677 ENTER;
1462 SAVETMPS; 1678 SAVETMPS;
1463 1679
1464 PUSHMARK (SP); 1680 PUSHMARK (SP);
1465 PUTBACK; 1681 PUTBACK;
1466 call_sv (sv_hook, G_DISCARD); 1682 call_sv (sv_hook, G_VOID | G_DISCARD);
1467 SPAGAIN;
1468 1683
1469 FREETMPS; 1684 FREETMPS;
1470 LEAVE; 1685 LEAVE;
1471 } 1686 }
1472 1687
… …
1475 1690
1476 return 1; 1691 return 1;
1477} 1692}
1478 1693
1479static int 1694static int
1480api_is_ready (SV *coro_sv) 1695api_is_ready (pTHX_ SV *coro_sv)
1481{ 1696{
1482 dTHX;
1483 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1697 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1484} 1698}
1485 1699
1486static void 1700/* expects to own a reference to next->hv */
1701INLINE void
1487prepare_schedule (pTHX_ struct transfer_args *ta) 1702prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1488{ 1703{
1489 SV *prev_sv, *next_sv;
1490
1491 for (;;)
1492 {
1493 LOCK;
1494 next_sv = coro_deq (aTHX);
1495
1496 /* nothing to schedule: call the idle handler */
1497 if (expect_false (!next_sv))
1498 {
1499 dSP;
1500 UNLOCK;
1501
1502 ENTER;
1503 SAVETMPS;
1504
1505 PUSHMARK (SP);
1506 PUTBACK;
1507 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1508 SPAGAIN;
1509
1510 FREETMPS;
1511 LEAVE;
1512 continue;
1513 }
1514
1515 ta->next = SvSTATE (next_sv);
1516
1517 /* cannot transfer to destroyed coros, skip and look for next */
1518 if (expect_false (ta->next->flags & CF_DESTROYED))
1519 {
1520 UNLOCK;
1521 SvREFCNT_dec (next_sv);
1522 /* coro_nready is already taken care of by destroy */
1523 continue;
1524 }
1525
1526 --coro_nready;
1527 UNLOCK;
1528 break;
1529 }
1530
1531 /* free this only after the transfer */
1532 prev_sv = SvRV (coro_current); 1704 SV *prev_sv = SvRV (coro_current);
1705
1533 ta->prev = SvSTATE (prev_sv); 1706 ta->prev = SvSTATE_hv (prev_sv);
1707 ta->next = next;
1708
1534 TRANSFER_CHECK (*ta); 1709 TRANSFER_CHECK (*ta);
1535 assert (ta->next->flags & CF_READY); 1710
1536 ta->next->flags &= ~CF_READY;
1537 SvRV_set (coro_current, next_sv); 1711 SvRV_set (coro_current, (SV *)next->hv);
1538 1712
1539 LOCK;
1540 free_coro_mortal (aTHX); 1713 free_coro_mortal (aTHX);
1541 coro_mortal = prev_sv; 1714 coro_mortal = prev_sv;
1542 UNLOCK;
1543} 1715}
1544 1716
1545static void 1717static void
1718prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1719{
1720 for (;;)
1721 {
1722 struct coro *next = coro_deq (aTHX);
1723
1724 if (expect_true (next))
1725 {
1726 /* cannot transfer to destroyed coros, skip and look for next */
1727 if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1728 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1729 else
1730 {
1731 next->flags &= ~CF_READY;
1732 --coro_nready;
1733
1734 prepare_schedule_to (aTHX_ ta, next);
1735 break;
1736 }
1737 }
1738 else
1739 {
1740 /* nothing to schedule: call the idle handler */
1741 if (SvROK (sv_idle)
1742 && SvOBJECT (SvRV (sv_idle)))
1743 {
1744 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1745 api_ready (aTHX_ SvRV (sv_idle));
1746 --coro_nready;
1747 }
1748 else
1749 {
1750 dSP;
1751
1752 ENTER;
1753 SAVETMPS;
1754
1755 PUSHMARK (SP);
1756 PUTBACK;
1757 call_sv (sv_idle, G_VOID | G_DISCARD);
1758
1759 FREETMPS;
1760 LEAVE;
1761 }
1762 }
1763 }
1764}
1765
1766INLINE void
1546prepare_cede (pTHX_ struct transfer_args *ta) 1767prepare_cede (pTHX_ struct coro_transfer_args *ta)
1547{ 1768{
1548 api_ready (coro_current); 1769 api_ready (aTHX_ coro_current);
1549 prepare_schedule (aTHX_ ta); 1770 prepare_schedule (aTHX_ ta);
1550} 1771}
1551 1772
1773INLINE void
1774prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1775{
1776 SV *prev = SvRV (coro_current);
1777
1778 if (coro_nready)
1779 {
1780 prepare_schedule (aTHX_ ta);
1781 api_ready (aTHX_ prev);
1782 }
1783 else
1784 prepare_nop (aTHX_ ta);
1785}
1786
1787static void
1788api_schedule (pTHX)
1789{
1790 struct coro_transfer_args ta;
1791
1792 prepare_schedule (aTHX_ &ta);
1793 TRANSFER (ta, 1);
1794}
1795
1796static void
1797api_schedule_to (pTHX_ SV *coro_sv)
1798{
1799 struct coro_transfer_args ta;
1800 struct coro *next = SvSTATE (coro_sv);
1801
1802 SvREFCNT_inc_NN (coro_sv);
1803 prepare_schedule_to (aTHX_ &ta, next);
1804}
1805
1552static int 1806static int
1553prepare_cede_notself (pTHX_ struct transfer_args *ta) 1807api_cede (pTHX)
1554{ 1808{
1555 if (coro_nready) 1809 struct coro_transfer_args ta;
1556 { 1810
1557 SV *prev = SvRV (coro_current);
1558 prepare_schedule (aTHX_ ta); 1811 prepare_cede (aTHX_ &ta);
1559 api_ready (prev); 1812
1813 if (expect_true (ta.prev != ta.next))
1814 {
1815 TRANSFER (ta, 1);
1560 return 1; 1816 return 1;
1561 } 1817 }
1562 else 1818 else
1563 return 0; 1819 return 0;
1564} 1820}
1565 1821
1566static void
1567api_schedule (void)
1568{
1569 dTHX;
1570 struct transfer_args ta;
1571
1572 prepare_schedule (aTHX_ &ta);
1573 TRANSFER (ta, 1);
1574}
1575
1576static int 1822static int
1577api_cede (void) 1823api_cede_notself (pTHX)
1578{ 1824{
1579 dTHX; 1825 if (coro_nready)
1826 {
1580 struct transfer_args ta; 1827 struct coro_transfer_args ta;
1581 1828
1582 prepare_cede (aTHX_ &ta); 1829 prepare_cede_notself (aTHX_ &ta);
1583
1584 if (expect_true (ta.prev != ta.next))
1585 {
1586 TRANSFER (ta, 1); 1830 TRANSFER (ta, 1);
1587 return 1; 1831 return 1;
1588 } 1832 }
1589 else 1833 else
1590 return 0; 1834 return 0;
1591} 1835}
1592 1836
1593static int 1837static void
1594api_cede_notself (void)
1595{
1596 dTHX;
1597 struct transfer_args ta;
1598
1599 if (prepare_cede_notself (aTHX_ &ta))
1600 {
1601 TRANSFER (ta, 1);
1602 return 1;
1603 }
1604 else
1605 return 0;
1606}
1607
1608static void
1609api_trace (SV *coro_sv, int flags) 1838api_trace (pTHX_ SV *coro_sv, int flags)
1610{ 1839{
1611 dTHX;
1612 struct coro *coro = SvSTATE (coro_sv); 1840 struct coro *coro = SvSTATE (coro_sv);
1613 1841
1842 if (coro->flags & CF_RUNNING)
1843 croak ("cannot enable tracing on a running coroutine, caught");
1844
1614 if (flags & CC_TRACE) 1845 if (flags & CC_TRACE)
1615 { 1846 {
1616 if (!coro->cctx) 1847 if (!coro->cctx)
1617 coro->cctx = cctx_new (); 1848 coro->cctx = cctx_new_run ();
1618 else if (!(coro->cctx->flags & CC_TRACE)) 1849 else if (!(coro->cctx->flags & CC_TRACE))
1619 croak ("cannot enable tracing on coroutine with custom stack"); 1850 croak ("cannot enable tracing on coroutine with custom stack, caught");
1620 1851
1621 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1852 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1622 } 1853 }
1623 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1854 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1624 { 1855 {
… …
1629 else 1860 else
1630 coro->slot->runops = RUNOPS_DEFAULT; 1861 coro->slot->runops = RUNOPS_DEFAULT;
1631 } 1862 }
1632} 1863}
1633 1864
1865static void
1866coro_call_on_destroy (pTHX_ struct coro *coro)
1867{
1868 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1869 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1870
1871 if (on_destroyp)
1872 {
1873 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1874
1875 while (AvFILLp (on_destroy) >= 0)
1876 {
1877 dSP; /* don't disturb outer sp */
1878 SV *cb = av_pop (on_destroy);
1879
1880 PUSHMARK (SP);
1881
1882 if (statusp)
1883 {
1884 int i;
1885 AV *status = (AV *)SvRV (*statusp);
1886 EXTEND (SP, AvFILLp (status) + 1);
1887
1888 for (i = 0; i <= AvFILLp (status); ++i)
1889 PUSHs (AvARRAY (status)[i]);
1890 }
1891
1892 PUTBACK;
1893 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1894 }
1895 }
1896}
1897
1898static void
1899slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1900{
1901 int i;
1902 HV *hv = (HV *)SvRV (coro_current);
1903 AV *av = newAV ();
1904
1905 av_extend (av, items - 1);
1906 for (i = 0; i < items; ++i)
1907 av_push (av, SvREFCNT_inc_NN (arg [i]));
1908
1909 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1910
1911 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1912 api_ready (aTHX_ sv_manager);
1913
1914 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_repeat;
1916
1917 /* as a minor optimisation, we could unwind all stacks here */
1918 /* but that puts extra pressure on pp_slf, and is not worth much */
1919 /*coro_unwind_stacks (aTHX);*/
1920}
1921
1922/*****************************************************************************/
1923/* async pool handler */
1924
1634static int 1925static int
1635coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1926slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1636{ 1927{
1637 AV *padlist; 1928 HV *hv = (HV *)SvRV (coro_current);
1638 AV *av = (AV *)mg->mg_obj; 1929 struct coro *coro = (struct coro *)frame->data;
1639 1930
1640 abort (); 1931 if (!coro->invoke_cb)
1932 return 1; /* loop till we have invoke */
1933 else
1934 {
1935 hv_store (hv, "desc", sizeof ("desc") - 1,
1936 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1937
1938 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1939
1940 {
1941 dSP;
1942 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1943 PUTBACK;
1944 }
1945
1946 SvREFCNT_dec (GvAV (PL_defgv));
1947 GvAV (PL_defgv) = coro->invoke_av;
1948 coro->invoke_av = 0;
1949
1950 return 0;
1951 }
1952}
1953
1954static void
1955slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1956{
1957 HV *hv = (HV *)SvRV (coro_current);
1958 struct coro *coro = SvSTATE_hv ((SV *)hv);
1959
1960 if (expect_true (coro->saved_deffh))
1961 {
1962 /* subsequent iteration */
1963 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1964 coro->saved_deffh = 0;
1965
1966 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1967 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1968 {
1969 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1970 coro->invoke_av = newAV ();
1971
1972 frame->prepare = prepare_nop;
1973 }
1974 else
1975 {
1976 av_clear (GvAV (PL_defgv));
1977 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1978
1979 coro->prio = 0;
1980
1981 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1982 api_trace (aTHX_ coro_current, 0);
1983
1984 frame->prepare = prepare_schedule;
1985 av_push (av_async_pool, SvREFCNT_inc (hv));
1986 }
1987 }
1988 else
1989 {
1990 /* first iteration, simply fall through */
1991 frame->prepare = prepare_nop;
1992 }
1993
1994 frame->check = slf_check_pool_handler;
1995 frame->data = (void *)coro;
1996}
1997
1998/*****************************************************************************/
1999/* rouse callback */
2000
2001#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2002
2003static void
2004coro_rouse_callback (pTHX_ CV *cv)
2005{
2006 dXSARGS;
2007 SV *data = (SV *)S_GENSUB_ARG;
2008
2009 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2010 {
2011 /* first call, set args */
2012 SV *coro = SvRV (data);
2013 AV *av = newAV ();
2014
2015 SvRV_set (data, (SV *)av);
2016
2017 /* better take a full copy of the arguments */
2018 while (items--)
2019 av_store (av, items, newSVsv (ST (items)));
2020
2021 api_ready (aTHX_ coro);
2022 SvREFCNT_dec (coro);
2023 }
2024
2025 XSRETURN_EMPTY;
2026}
2027
2028static int
2029slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2030{
2031 SV *data = (SV *)frame->data;
2032
2033 if (CORO_THROW)
2034 return 0;
2035
2036 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2037 return 1;
2038
2039 /* now push all results on the stack */
2040 {
2041 dSP;
2042 AV *av = (AV *)SvRV (data);
2043 int i;
2044
2045 EXTEND (SP, AvFILLp (av) + 1);
2046 for (i = 0; i <= AvFILLp (av); ++i)
2047 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2048
2049 /* we have stolen the elements, so set length to zero and free */
2050 AvFILLp (av) = -1;
2051 av_undef (av);
2052
2053 PUTBACK;
2054 }
1641 2055
1642 return 0; 2056 return 0;
1643} 2057}
1644 2058
1645static MGVTBL coro_gensub_vtbl = { 2059static void
1646 0, 0, 0, 0, 2060slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1647 coro_gensub_free 2061{
2062 SV *cb;
2063
2064 if (items)
2065 cb = arg [0];
2066 else
2067 {
2068 struct coro *coro = SvSTATE_current;
2069
2070 if (!coro->rouse_cb)
2071 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2072
2073 cb = sv_2mortal (coro->rouse_cb);
2074 coro->rouse_cb = 0;
2075 }
2076
2077 if (!SvROK (cb)
2078 || SvTYPE (SvRV (cb)) != SVt_PVCV
2079 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2080 croak ("Coro::rouse_wait called with illegal callback argument,");
2081
2082 {
2083 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2084 SV *data = (SV *)S_GENSUB_ARG;
2085
2086 frame->data = (void *)data;
2087 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2088 frame->check = slf_check_rouse_wait;
2089 }
2090}
2091
2092static SV *
2093coro_new_rouse_cb (pTHX)
2094{
2095 HV *hv = (HV *)SvRV (coro_current);
2096 struct coro *coro = SvSTATE_hv (hv);
2097 SV *data = newRV_inc ((SV *)hv);
2098 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2099
2100 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2101 SvREFCNT_dec (data); /* magicext increases the refcount */
2102
2103 SvREFCNT_dec (coro->rouse_cb);
2104 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2105
2106 return cb;
2107}
2108
2109/*****************************************************************************/
2110/* schedule-like-function opcode (SLF) */
2111
2112static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2113static const CV *slf_cv;
2114static SV **slf_argv;
2115static int slf_argc, slf_arga; /* count, allocated */
2116static I32 slf_ax; /* top of stack, for restore */
2117
2118/* this restores the stack in the case we patched the entersub, to */
2119/* recreate the stack frame as perl will on following calls */
2120/* since entersub cleared the stack */
2121static OP *
2122pp_restore (pTHX)
2123{
2124 int i;
2125 SV **SP = PL_stack_base + slf_ax;
2126
2127 PUSHMARK (SP);
2128
2129 EXTEND (SP, slf_argc + 1);
2130
2131 for (i = 0; i < slf_argc; ++i)
2132 PUSHs (sv_2mortal (slf_argv [i]));
2133
2134 PUSHs ((SV *)CvGV (slf_cv));
2135
2136 RETURNOP (slf_restore.op_first);
2137}
2138
2139static void
2140slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2141{
2142 SV **arg = (SV **)slf_frame.data;
2143
2144 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2145}
2146
2147static void
2148slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2149{
2150 if (items != 2)
2151 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2152
2153 frame->prepare = slf_prepare_transfer;
2154 frame->check = slf_check_nop;
2155 frame->data = (void *)arg; /* let's hope it will stay valid */
2156}
2157
2158static void
2159slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2160{
2161 frame->prepare = prepare_schedule;
2162 frame->check = slf_check_nop;
2163}
2164
2165static void
2166slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2167{
2168 struct coro *next = (struct coro *)slf_frame.data;
2169
2170 SvREFCNT_inc_NN (next->hv);
2171 prepare_schedule_to (aTHX_ ta, next);
2172}
2173
2174static void
2175slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2176{
2177 if (!items)
2178 croak ("Coro::schedule_to expects a coroutine argument, caught");
2179
2180 frame->data = (void *)SvSTATE (arg [0]);
2181 frame->prepare = slf_prepare_schedule_to;
2182 frame->check = slf_check_nop;
2183}
2184
2185static void
2186slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2187{
2188 api_ready (aTHX_ SvRV (coro_current));
2189
2190 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2191}
2192
2193static void
2194slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2195{
2196 frame->prepare = prepare_cede;
2197 frame->check = slf_check_nop;
2198}
2199
2200static void
2201slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2202{
2203 frame->prepare = prepare_cede_notself;
2204 frame->check = slf_check_nop;
2205}
2206
2207/*
2208 * these not obviously related functions are all rolled into one
2209 * function to increase chances that they all will call transfer with the same
2210 * stack offset
2211 * SLF stands for "schedule-like-function".
2212 */
2213static OP *
2214pp_slf (pTHX)
2215{
2216 I32 checkmark; /* mark SP to see how many elements check has pushed */
2217
2218 /* set up the slf frame, unless it has already been set-up */
2219 /* the latter happens when a new coro has been started */
2220 /* or when a new cctx was attached to an existing coroutine */
2221 if (expect_true (!slf_frame.prepare))
2222 {
2223 /* first iteration */
2224 dSP;
2225 SV **arg = PL_stack_base + TOPMARK + 1;
2226 int items = SP - arg; /* args without function object */
2227 SV *gv = *sp;
2228
2229 /* do a quick consistency check on the "function" object, and if it isn't */
2230 /* for us, divert to the real entersub */
2231 if (SvTYPE (gv) != SVt_PVGV
2232 || !GvCV (gv)
2233 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2234 return PL_ppaddr[OP_ENTERSUB](aTHX);
2235
2236 if (!(PL_op->op_flags & OPf_STACKED))
2237 {
2238 /* ampersand-form of call, use @_ instead of stack */
2239 AV *av = GvAV (PL_defgv);
2240 arg = AvARRAY (av);
2241 items = AvFILLp (av) + 1;
2242 }
2243
2244 /* now call the init function, which needs to set up slf_frame */
2245 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2246 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2247
2248 /* pop args */
2249 SP = PL_stack_base + POPMARK;
2250
2251 PUTBACK;
2252 }
2253
2254 /* now that we have a slf_frame, interpret it! */
2255 /* we use a callback system not to make the code needlessly */
2256 /* complicated, but so we can run multiple perl coros from one cctx */
2257
2258 do
2259 {
2260 struct coro_transfer_args ta;
2261
2262 slf_frame.prepare (aTHX_ &ta);
2263 TRANSFER (ta, 0);
2264
2265 checkmark = PL_stack_sp - PL_stack_base;
2266 }
2267 while (slf_frame.check (aTHX_ &slf_frame));
2268
2269 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2270
2271 /* exception handling */
2272 if (expect_false (CORO_THROW))
2273 {
2274 SV *exception = sv_2mortal (CORO_THROW);
2275
2276 CORO_THROW = 0;
2277 sv_setsv (ERRSV, exception);
2278 croak (0);
2279 }
2280
2281 /* return value handling - mostly like entersub */
2282 /* make sure we put something on the stack in scalar context */
2283 if (GIMME_V == G_SCALAR)
2284 {
2285 dSP;
2286 SV **bot = PL_stack_base + checkmark;
2287
2288 if (sp == bot) /* too few, push undef */
2289 bot [1] = &PL_sv_undef;
2290 else if (sp != bot + 1) /* too many, take last one */
2291 bot [1] = *sp;
2292
2293 SP = bot + 1;
2294
2295 PUTBACK;
2296 }
2297
2298 return NORMAL;
2299}
2300
2301static void
2302api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2303{
2304 int i;
2305 SV **arg = PL_stack_base + ax;
2306 int items = PL_stack_sp - arg + 1;
2307
2308 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2309
2310 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2311 && PL_op->op_ppaddr != pp_slf)
2312 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2313
2314 CvFLAGS (cv) |= CVf_SLF;
2315 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2316 slf_cv = cv;
2317
2318 /* we patch the op, and then re-run the whole call */
2319 /* we have to put the same argument on the stack for this to work */
2320 /* and this will be done by pp_restore */
2321 slf_restore.op_next = (OP *)&slf_restore;
2322 slf_restore.op_type = OP_CUSTOM;
2323 slf_restore.op_ppaddr = pp_restore;
2324 slf_restore.op_first = PL_op;
2325
2326 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2327
2328 if (PL_op->op_flags & OPf_STACKED)
2329 {
2330 if (items > slf_arga)
2331 {
2332 slf_arga = items;
2333 free (slf_argv);
2334 slf_argv = malloc (slf_arga * sizeof (SV *));
2335 }
2336
2337 slf_argc = items;
2338
2339 for (i = 0; i < items; ++i)
2340 slf_argv [i] = SvREFCNT_inc (arg [i]);
2341 }
2342 else
2343 slf_argc = 0;
2344
2345 PL_op->op_ppaddr = pp_slf;
2346 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2347
2348 PL_op = (OP *)&slf_restore;
2349}
2350
2351/*****************************************************************************/
2352/* dynamic wind */
2353
2354static void
2355on_enterleave_call (pTHX_ SV *cb)
2356{
2357 dSP;
2358
2359 PUSHSTACK;
2360
2361 PUSHMARK (SP);
2362 PUTBACK;
2363 call_sv (cb, G_VOID | G_DISCARD);
2364 SPAGAIN;
2365
2366 POPSTACK;
2367}
2368
2369static SV *
2370coro_avp_pop_and_free (pTHX_ AV **avp)
2371{
2372 AV *av = *avp;
2373 SV *res = av_pop (av);
2374
2375 if (AvFILLp (av) < 0)
2376 {
2377 *avp = 0;
2378 SvREFCNT_dec (av);
2379 }
2380
2381 return res;
2382}
2383
2384static void
2385coro_pop_on_enter (pTHX_ void *coro)
2386{
2387 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2388 SvREFCNT_dec (cb);
2389}
2390
2391static void
2392coro_pop_on_leave (pTHX_ void *coro)
2393{
2394 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2395 on_enterleave_call (aTHX_ sv_2mortal (cb));
2396}
2397
2398/*****************************************************************************/
2399/* PerlIO::cede */
2400
2401typedef struct
2402{
2403 PerlIOBuf base;
2404 NV next, every;
2405} PerlIOCede;
2406
2407static IV
2408PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2409{
2410 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2411
2412 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2413 self->next = nvtime () + self->every;
2414
2415 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2416}
2417
2418static SV *
2419PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2420{
2421 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2422
2423 return newSVnv (self->every);
2424}
2425
2426static IV
2427PerlIOCede_flush (pTHX_ PerlIO *f)
2428{
2429 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2430 double now = nvtime ();
2431
2432 if (now >= self->next)
2433 {
2434 api_cede (aTHX);
2435 self->next = now + self->every;
2436 }
2437
2438 return PerlIOBuf_flush (aTHX_ f);
2439}
2440
2441static PerlIO_funcs PerlIO_cede =
2442{
2443 sizeof(PerlIO_funcs),
2444 "cede",
2445 sizeof(PerlIOCede),
2446 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2447 PerlIOCede_pushed,
2448 PerlIOBuf_popped,
2449 PerlIOBuf_open,
2450 PerlIOBase_binmode,
2451 PerlIOCede_getarg,
2452 PerlIOBase_fileno,
2453 PerlIOBuf_dup,
2454 PerlIOBuf_read,
2455 PerlIOBuf_unread,
2456 PerlIOBuf_write,
2457 PerlIOBuf_seek,
2458 PerlIOBuf_tell,
2459 PerlIOBuf_close,
2460 PerlIOCede_flush,
2461 PerlIOBuf_fill,
2462 PerlIOBase_eof,
2463 PerlIOBase_error,
2464 PerlIOBase_clearerr,
2465 PerlIOBase_setlinebuf,
2466 PerlIOBuf_get_base,
2467 PerlIOBuf_bufsiz,
2468 PerlIOBuf_get_ptr,
2469 PerlIOBuf_get_cnt,
2470 PerlIOBuf_set_ptrcnt,
1648}; 2471};
1649 2472
2473/*****************************************************************************/
2474/* Coro::Semaphore & Coro::Signal */
2475
2476static SV *
2477coro_waitarray_new (pTHX_ int count)
2478{
2479 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2480 AV *av = newAV ();
2481 SV **ary;
2482
2483 /* unfortunately, building manually saves memory */
2484 Newx (ary, 2, SV *);
2485 AvALLOC (av) = ary;
2486#if PERL_VERSION_ATLEAST (5,10,0)
2487 AvARRAY (av) = ary;
2488#else
2489 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2490 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2491 SvPVX ((SV *)av) = (char *)ary;
2492#endif
2493 AvMAX (av) = 1;
2494 AvFILLp (av) = 0;
2495 ary [0] = newSViv (count);
2496
2497 return newRV_noinc ((SV *)av);
2498}
2499
2500/* semaphore */
2501
2502static void
2503coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2504{
2505 SV *count_sv = AvARRAY (av)[0];
2506 IV count = SvIVX (count_sv);
2507
2508 count += adjust;
2509 SvIVX (count_sv) = count;
2510
2511 /* now wake up as many waiters as are expected to lock */
2512 while (count > 0 && AvFILLp (av) > 0)
2513 {
2514 SV *cb;
2515
2516 /* swap first two elements so we can shift a waiter */
2517 AvARRAY (av)[0] = AvARRAY (av)[1];
2518 AvARRAY (av)[1] = count_sv;
2519 cb = av_shift (av);
2520
2521 if (SvOBJECT (cb))
2522 {
2523 api_ready (aTHX_ cb);
2524 --count;
2525 }
2526 else if (SvTYPE (cb) == SVt_PVCV)
2527 {
2528 dSP;
2529 PUSHMARK (SP);
2530 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2531 PUTBACK;
2532 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2533 }
2534
2535 SvREFCNT_dec (cb);
2536 }
2537}
2538
2539static void
2540coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2541{
2542 /* call $sem->adjust (0) to possibly wake up some other waiters */
2543 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2544}
2545
2546static int
2547slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2548{
2549 AV *av = (AV *)frame->data;
2550 SV *count_sv = AvARRAY (av)[0];
2551
2552 /* if we are about to throw, don't actually acquire the lock, just throw */
2553 if (CORO_THROW)
2554 return 0;
2555 else if (SvIVX (count_sv) > 0)
2556 {
2557 SvSTATE_current->on_destroy = 0;
2558
2559 if (acquire)
2560 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2561 else
2562 coro_semaphore_adjust (aTHX_ av, 0);
2563
2564 return 0;
2565 }
2566 else
2567 {
2568 int i;
2569 /* if we were woken up but can't down, we look through the whole */
2570 /* waiters list and only add us if we aren't in there already */
2571 /* this avoids some degenerate memory usage cases */
2572
2573 for (i = 1; i <= AvFILLp (av); ++i)
2574 if (AvARRAY (av)[i] == SvRV (coro_current))
2575 return 1;
2576
2577 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2578 return 1;
2579 }
2580}
2581
2582static int
2583slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2584{
2585 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2586}
2587
2588static int
2589slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2590{
2591 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2592}
2593
2594static void
2595slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2596{
2597 AV *av = (AV *)SvRV (arg [0]);
2598
2599 if (SvIVX (AvARRAY (av)[0]) > 0)
2600 {
2601 frame->data = (void *)av;
2602 frame->prepare = prepare_nop;
2603 }
2604 else
2605 {
2606 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2607
2608 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2609 frame->prepare = prepare_schedule;
2610
2611 /* to avoid race conditions when a woken-up coro gets terminated */
2612 /* we arrange for a temporary on_destroy that calls adjust (0) */
2613 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2614 }
2615}
2616
2617static void
2618slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2619{
2620 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2621 frame->check = slf_check_semaphore_down;
2622}
2623
2624static void
2625slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2626{
2627 if (items >= 2)
2628 {
2629 /* callback form */
2630 AV *av = (AV *)SvRV (arg [0]);
2631 SV *cb_cv = s_get_cv_croak (arg [1]);
2632
2633 av_push (av, SvREFCNT_inc_NN (cb_cv));
2634
2635 if (SvIVX (AvARRAY (av)[0]) > 0)
2636 coro_semaphore_adjust (aTHX_ av, 0);
2637
2638 frame->prepare = prepare_nop;
2639 frame->check = slf_check_nop;
2640 }
2641 else
2642 {
2643 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2644 frame->check = slf_check_semaphore_wait;
2645 }
2646}
2647
2648/* signal */
2649
2650static void
2651coro_signal_wake (pTHX_ AV *av, int count)
2652{
2653 SvIVX (AvARRAY (av)[0]) = 0;
2654
2655 /* now signal count waiters */
2656 while (count > 0 && AvFILLp (av) > 0)
2657 {
2658 SV *cb;
2659
2660 /* swap first two elements so we can shift a waiter */
2661 cb = AvARRAY (av)[0];
2662 AvARRAY (av)[0] = AvARRAY (av)[1];
2663 AvARRAY (av)[1] = cb;
2664
2665 cb = av_shift (av);
2666
2667 if (SvTYPE (cb) == SVt_PVCV)
2668 {
2669 dSP;
2670 PUSHMARK (SP);
2671 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2672 PUTBACK;
2673 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2674 }
2675 else
2676 {
2677 api_ready (aTHX_ cb);
2678 sv_setiv (cb, 0); /* signal waiter */
2679 }
2680
2681 SvREFCNT_dec (cb);
2682
2683 --count;
2684 }
2685}
2686
2687static int
2688slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2689{
2690 /* if we are about to throw, also stop waiting */
2691 return SvROK ((SV *)frame->data) && !CORO_THROW;
2692}
2693
2694static void
2695slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2696{
2697 AV *av = (AV *)SvRV (arg [0]);
2698
2699 if (items >= 2)
2700 {
2701 SV *cb_cv = s_get_cv_croak (arg [1]);
2702 av_push (av, SvREFCNT_inc_NN (cb_cv));
2703
2704 if (SvIVX (AvARRAY (av)[0]))
2705 coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
2706
2707 frame->prepare = prepare_nop;
2708 frame->check = slf_check_nop;
2709 }
2710 else if (SvIVX (AvARRAY (av)[0]))
2711 {
2712 SvIVX (AvARRAY (av)[0]) = 0;
2713 frame->prepare = prepare_nop;
2714 frame->check = slf_check_nop;
2715 }
2716 else
2717 {
2718 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2719
2720 av_push (av, waiter);
2721
2722 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2723 frame->prepare = prepare_schedule;
2724 frame->check = slf_check_signal_wait;
2725 }
2726}
2727
2728/*****************************************************************************/
2729/* Coro::AIO */
2730
2731#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2732
2733/* helper storage struct */
2734struct io_state
2735{
2736 int errorno;
2737 I32 laststype; /* U16 in 5.10.0 */
2738 int laststatval;
2739 Stat_t statcache;
2740};
2741
2742static void
2743coro_aio_callback (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746 AV *state = (AV *)S_GENSUB_ARG;
2747 SV *coro = av_pop (state);
2748 SV *data_sv = newSV (sizeof (struct io_state));
2749
2750 av_extend (state, items - 1);
2751
2752 sv_upgrade (data_sv, SVt_PV);
2753 SvCUR_set (data_sv, sizeof (struct io_state));
2754 SvPOK_only (data_sv);
2755
2756 {
2757 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2758
2759 data->errorno = errno;
2760 data->laststype = PL_laststype;
2761 data->laststatval = PL_laststatval;
2762 data->statcache = PL_statcache;
2763 }
2764
2765 /* now build the result vector out of all the parameters and the data_sv */
2766 {
2767 int i;
2768
2769 for (i = 0; i < items; ++i)
2770 av_push (state, SvREFCNT_inc_NN (ST (i)));
2771 }
2772
2773 av_push (state, data_sv);
2774
2775 api_ready (aTHX_ coro);
2776 SvREFCNT_dec (coro);
2777 SvREFCNT_dec ((AV *)state);
2778}
2779
2780static int
2781slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2782{
2783 AV *state = (AV *)frame->data;
2784
2785 /* if we are about to throw, return early */
2786 /* this does not cancel the aio request, but at least */
2787 /* it quickly returns */
2788 if (CORO_THROW)
2789 return 0;
2790
2791 /* one element that is an RV? repeat! */
2792 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2793 return 1;
2794
2795 /* restore status */
2796 {
2797 SV *data_sv = av_pop (state);
2798 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2799
2800 errno = data->errorno;
2801 PL_laststype = data->laststype;
2802 PL_laststatval = data->laststatval;
2803 PL_statcache = data->statcache;
2804
2805 SvREFCNT_dec (data_sv);
2806 }
2807
2808 /* push result values */
2809 {
2810 dSP;
2811 int i;
2812
2813 EXTEND (SP, AvFILLp (state) + 1);
2814 for (i = 0; i <= AvFILLp (state); ++i)
2815 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2816
2817 PUTBACK;
2818 }
2819
2820 return 0;
2821}
2822
2823static void
2824slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2825{
2826 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2827 SV *coro_hv = SvRV (coro_current);
2828 struct coro *coro = SvSTATE_hv (coro_hv);
2829
2830 /* put our coroutine id on the state arg */
2831 av_push (state, SvREFCNT_inc_NN (coro_hv));
2832
2833 /* first see whether we have a non-zero priority and set it as AIO prio */
2834 if (coro->prio)
2835 {
2836 dSP;
2837
2838 static SV *prio_cv;
2839 static SV *prio_sv;
2840
2841 if (expect_false (!prio_cv))
2842 {
2843 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2844 prio_sv = newSViv (0);
2845 }
2846
2847 PUSHMARK (SP);
2848 sv_setiv (prio_sv, coro->prio);
2849 XPUSHs (prio_sv);
2850
2851 PUTBACK;
2852 call_sv (prio_cv, G_VOID | G_DISCARD);
2853 }
2854
2855 /* now call the original request */
2856 {
2857 dSP;
2858 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2859 int i;
2860
2861 PUSHMARK (SP);
2862
2863 /* first push all args to the stack */
2864 EXTEND (SP, items + 1);
2865
2866 for (i = 0; i < items; ++i)
2867 PUSHs (arg [i]);
2868
2869 /* now push the callback closure */
2870 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2871
2872 /* now call the AIO function - we assume our request is uncancelable */
2873 PUTBACK;
2874 call_sv ((SV *)req, G_VOID | G_DISCARD);
2875 }
2876
2877 /* now that the requets is going, we loop toll we have a result */
2878 frame->data = (void *)state;
2879 frame->prepare = prepare_schedule;
2880 frame->check = slf_check_aio_req;
2881}
2882
2883static void
2884coro_aio_req_xs (pTHX_ CV *cv)
2885{
2886 dXSARGS;
2887
2888 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2889
2890 XSRETURN_EMPTY;
2891}
2892
2893/*****************************************************************************/
2894
2895#if CORO_CLONE
2896# include "clone.c"
2897#endif
2898
1650MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2899MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1651 2900
1652PROTOTYPES: DISABLE 2901PROTOTYPES: DISABLE
1653 2902
1654BOOT: 2903BOOT:
1655{ 2904{
1656#ifdef USE_ITHREADS 2905#ifdef USE_ITHREADS
1657 MUTEX_INIT (&coro_mutex); 2906# if CORO_PTHREAD
2907 coro_thx = PERL_GET_CONTEXT;
2908# endif
1658#endif 2909#endif
1659 BOOT_PAGESIZE; 2910 BOOT_PAGESIZE;
2911
2912 cctx_current = cctx_new_empty ();
1660 2913
1661 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2914 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1662 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2915 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1663 2916
1664 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 2917 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1680 main_top_env = PL_top_env; 2933 main_top_env = PL_top_env;
1681 2934
1682 while (main_top_env->je_prev) 2935 while (main_top_env->je_prev)
1683 main_top_env = main_top_env->je_prev; 2936 main_top_env = main_top_env->je_prev;
1684 2937
2938 {
2939 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2940
2941 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2942 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2943
2944 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2945 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2946 }
2947
1685 coroapi.ver = CORO_API_VERSION; 2948 coroapi.ver = CORO_API_VERSION;
1686 coroapi.rev = CORO_API_REVISION; 2949 coroapi.rev = CORO_API_REVISION;
2950
1687 coroapi.transfer = api_transfer; 2951 coroapi.transfer = api_transfer;
1688 2952
2953 coroapi.sv_state = SvSTATE_;
2954 coroapi.execute_slf = api_execute_slf;
2955 coroapi.prepare_nop = prepare_nop;
2956 coroapi.prepare_schedule = prepare_schedule;
2957 coroapi.prepare_cede = prepare_cede;
2958 coroapi.prepare_cede_notself = prepare_cede_notself;
2959
2960 {
2961 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2962
2963 if (!svp) croak ("Time::HiRes is required");
2964 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2965
2966 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2967
2968 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
2969 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2970 }
2971
1689 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 2972 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
1690} 2973}
1691 2974
1692SV * 2975SV *
1693new (char *klass, ...) 2976new (char *klass, ...)
2977 ALIAS:
2978 Coro::new = 1
1694 CODE: 2979 CODE:
1695{ 2980{
1696 struct coro *coro; 2981 struct coro *coro;
1697 MAGIC *mg; 2982 MAGIC *mg;
1698 HV *hv; 2983 HV *hv;
2984 SV *cb;
1699 int i; 2985 int i;
2986
2987 if (items > 1)
2988 {
2989 cb = s_get_cv_croak (ST (1));
2990
2991 if (!ix)
2992 {
2993 if (CvISXSUB (cb))
2994 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2995
2996 if (!CvROOT (cb))
2997 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2998 }
2999 }
1700 3000
1701 Newz (0, coro, 1, struct coro); 3001 Newz (0, coro, 1, struct coro);
1702 coro->args = newAV (); 3002 coro->args = newAV ();
1703 coro->flags = CF_NEW; 3003 coro->flags = CF_NEW;
1704 3004
… …
1709 coro->hv = hv = newHV (); 3009 coro->hv = hv = newHV ();
1710 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); 3010 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1711 mg->mg_flags |= MGf_DUP; 3011 mg->mg_flags |= MGf_DUP;
1712 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); 3012 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1713 3013
3014 if (items > 1)
3015 {
1714 av_extend (coro->args, items - 1); 3016 av_extend (coro->args, items - 1 + ix - 1);
3017
3018 if (ix)
3019 {
3020 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3021 cb = (SV *)cv_coro_run;
3022 }
3023
3024 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3025
1715 for (i = 1; i < items; i++) 3026 for (i = 2; i < items; i++)
1716 av_push (coro->args, newSVsv (ST (i))); 3027 av_push (coro->args, newSVsv (ST (i)));
3028 }
1717} 3029}
1718 OUTPUT: 3030 OUTPUT:
1719 RETVAL 3031 RETVAL
1720 3032
1721# these not obviously related functions are all rolled into the same xs
1722# function to increase chances that they all will call transfer with the same
1723# stack offset
1724void 3033void
1725_set_stacklevel (...) 3034transfer (...)
1726 ALIAS: 3035 PROTOTYPE: $$
1727 Coro::State::transfer = 1 3036 CODE:
1728 Coro::schedule = 2 3037 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1729 Coro::cede = 3
1730 Coro::cede_notself = 4
1731 CODE:
1732{
1733 struct transfer_args ta;
1734
1735 PUTBACK;
1736 switch (ix)
1737 {
1738 case 0:
1739 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1740 ta.next = 0;
1741 break;
1742
1743 case 1:
1744 if (items != 2)
1745 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1746
1747 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1748 break;
1749
1750 case 2:
1751 prepare_schedule (aTHX_ &ta);
1752 break;
1753
1754 case 3:
1755 prepare_cede (aTHX_ &ta);
1756 break;
1757
1758 case 4:
1759 if (!prepare_cede_notself (aTHX_ &ta))
1760 XSRETURN_EMPTY;
1761
1762 break;
1763 }
1764 SPAGAIN;
1765
1766 BARRIER;
1767 PUTBACK;
1768 TRANSFER (ta, 0);
1769 SPAGAIN; /* might be the sp of a different coroutine now */
1770 /* be extra careful not to ever do anything after TRANSFER */
1771}
1772 3038
1773bool 3039bool
1774_destroy (SV *coro_sv) 3040_destroy (SV *coro_sv)
1775 CODE: 3041 CODE:
1776 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3042 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1781_exit (int code) 3047_exit (int code)
1782 PROTOTYPE: $ 3048 PROTOTYPE: $
1783 CODE: 3049 CODE:
1784 _exit (code); 3050 _exit (code);
1785 3051
3052SV *
3053clone (Coro::State coro)
3054 CODE:
3055{
3056#if CORO_CLONE
3057 struct coro *ncoro = coro_clone (aTHX_ coro);
3058 MAGIC *mg;
3059 /* TODO: too much duplication */
3060 ncoro->hv = newHV ();
3061 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3062 mg->mg_flags |= MGf_DUP;
3063 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3064#else
3065 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3066#endif
3067}
3068 OUTPUT:
3069 RETVAL
3070
1786int 3071int
1787cctx_stacksize (int new_stacksize = 0) 3072cctx_stacksize (int new_stacksize = 0)
3073 PROTOTYPE: ;$
1788 CODE: 3074 CODE:
1789 RETVAL = coro_stacksize; 3075 RETVAL = cctx_stacksize;
1790 if (new_stacksize) 3076 if (new_stacksize)
3077 {
1791 coro_stacksize = new_stacksize; 3078 cctx_stacksize = new_stacksize;
3079 ++cctx_gen;
3080 }
1792 OUTPUT: 3081 OUTPUT:
1793 RETVAL 3082 RETVAL
1794 3083
1795int 3084int
3085cctx_max_idle (int max_idle = 0)
3086 PROTOTYPE: ;$
3087 CODE:
3088 RETVAL = cctx_max_idle;
3089 if (max_idle > 1)
3090 cctx_max_idle = max_idle;
3091 OUTPUT:
3092 RETVAL
3093
3094int
1796cctx_count () 3095cctx_count ()
3096 PROTOTYPE:
1797 CODE: 3097 CODE:
1798 RETVAL = cctx_count; 3098 RETVAL = cctx_count;
1799 OUTPUT: 3099 OUTPUT:
1800 RETVAL 3100 RETVAL
1801 3101
1802int 3102int
1803cctx_idle () 3103cctx_idle ()
3104 PROTOTYPE:
1804 CODE: 3105 CODE:
1805 RETVAL = cctx_idle; 3106 RETVAL = cctx_idle;
1806 OUTPUT: 3107 OUTPUT:
1807 RETVAL 3108 RETVAL
1808 3109
1809void 3110void
1810list () 3111list ()
3112 PROTOTYPE:
1811 PPCODE: 3113 PPCODE:
1812{ 3114{
1813 struct coro *coro; 3115 struct coro *coro;
1814 for (coro = coro_first; coro; coro = coro->next) 3116 for (coro = coro_first; coro; coro = coro->next)
1815 if (coro->hv) 3117 if (coro->hv)
… …
1822 eval = 1 3124 eval = 1
1823 CODE: 3125 CODE:
1824{ 3126{
1825 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3127 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1826 { 3128 {
1827 struct coro temp; 3129 struct coro *current = SvSTATE_current;
1828 3130
1829 if (!(coro->flags & CF_RUNNING)) 3131 if (current != coro)
1830 { 3132 {
1831 PUTBACK; 3133 PUTBACK;
1832 save_perl (aTHX_ &temp); 3134 save_perl (aTHX_ current);
1833 load_perl (aTHX_ coro); 3135 load_perl (aTHX_ coro);
3136 SPAGAIN;
1834 } 3137 }
1835 3138
1836 {
1837 dSP;
1838 ENTER;
1839 SAVETMPS;
1840 PUTBACK;
1841 PUSHSTACK; 3139 PUSHSTACK;
3140
1842 PUSHMARK (SP); 3141 PUSHMARK (SP);
3142 PUTBACK;
1843 3143
1844 if (ix) 3144 if (ix)
1845 eval_sv (coderef, 0); 3145 eval_sv (coderef, 0);
1846 else 3146 else
1847 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3147 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1848 3148
1849 POPSTACK; 3149 POPSTACK;
1850 SPAGAIN; 3150 SPAGAIN;
1851 FREETMPS;
1852 LEAVE;
1853 PUTBACK;
1854 }
1855 3151
1856 if (!(coro->flags & CF_RUNNING)) 3152 if (current != coro)
1857 { 3153 {
3154 PUTBACK;
1858 save_perl (aTHX_ coro); 3155 save_perl (aTHX_ coro);
1859 load_perl (aTHX_ &temp); 3156 load_perl (aTHX_ current);
1860 SPAGAIN; 3157 SPAGAIN;
1861 } 3158 }
1862 } 3159 }
1863} 3160}
1864 3161
… …
1868 ALIAS: 3165 ALIAS:
1869 is_ready = CF_READY 3166 is_ready = CF_READY
1870 is_running = CF_RUNNING 3167 is_running = CF_RUNNING
1871 is_new = CF_NEW 3168 is_new = CF_NEW
1872 is_destroyed = CF_DESTROYED 3169 is_destroyed = CF_DESTROYED
3170 is_suspended = CF_SUSPENDED
1873 CODE: 3171 CODE:
1874 RETVAL = boolSV (coro->flags & ix); 3172 RETVAL = boolSV (coro->flags & ix);
1875 OUTPUT: 3173 OUTPUT:
1876 RETVAL 3174 RETVAL
1877 3175
1878void 3176void
3177throw (Coro::State self, SV *throw = &PL_sv_undef)
3178 PROTOTYPE: $;$
3179 CODE:
3180{
3181 struct coro *current = SvSTATE_current;
3182 SV **throwp = self == current ? &CORO_THROW : &self->except;
3183 SvREFCNT_dec (*throwp);
3184 SvGETMAGIC (throw);
3185 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3186}
3187
3188void
1879api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3189api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3190 PROTOTYPE: $;$
3191 C_ARGS: aTHX_ coro, flags
1880 3192
1881SV * 3193SV *
1882has_cctx (Coro::State coro) 3194has_cctx (Coro::State coro)
1883 PROTOTYPE: $ 3195 PROTOTYPE: $
1884 CODE: 3196 CODE:
1885 RETVAL = boolSV (!!coro->cctx); 3197 /* maybe manage the running flag differently */
3198 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1886 OUTPUT: 3199 OUTPUT:
1887 RETVAL 3200 RETVAL
1888 3201
1889int 3202int
1890is_traced (Coro::State coro) 3203is_traced (Coro::State coro)
… …
1892 CODE: 3205 CODE:
1893 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3206 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1894 OUTPUT: 3207 OUTPUT:
1895 RETVAL 3208 RETVAL
1896 3209
1897IV 3210UV
1898rss (Coro::State coro) 3211rss (Coro::State coro)
1899 PROTOTYPE: $ 3212 PROTOTYPE: $
1900 ALIAS: 3213 ALIAS:
1901 usecount = 1 3214 usecount = 1
1902 CODE: 3215 CODE:
… …
1908 OUTPUT: 3221 OUTPUT:
1909 RETVAL 3222 RETVAL
1910 3223
1911void 3224void
1912force_cctx () 3225force_cctx ()
3226 PROTOTYPE:
1913 CODE: 3227 CODE:
1914 struct coro *coro = SvSTATE (coro_current);
1915 coro->cctx->idle_sp = 0; 3228 cctx_current->idle_sp = 0;
1916
1917void
1918throw (Coro::State self, SV *throw = &PL_sv_undef)
1919 PROTOTYPE: $;$
1920 CODE:
1921 SvREFCNT_dec (self->throw);
1922 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1923 3229
1924void 3230void
1925swap_defsv (Coro::State self) 3231swap_defsv (Coro::State self)
1926 PROTOTYPE: $ 3232 PROTOTYPE: $
1927 ALIAS: 3233 ALIAS:
1928 swap_defav = 1 3234 swap_defav = 1
1929 CODE: 3235 CODE:
1930 if (!self->slot) 3236 if (!self->slot)
1931 croak ("cannot swap state with coroutine that has no saved state"); 3237 croak ("cannot swap state with coroutine that has no saved state,");
1932 else 3238 else
1933 { 3239 {
1934 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3240 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
1935 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3241 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
1936 3242
1937 SV *tmp = *src; *src = *dst; *dst = tmp; 3243 SV *tmp = *src; *src = *dst; *dst = tmp;
1938 } 3244 }
1939 3245
3246void
3247cancel (Coro::State self)
3248 CODE:
3249 coro_state_destroy (aTHX_ self);
3250 coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3251
3252
3253SV *
3254enable_times (int enabled = enable_times)
3255 CODE:
3256{
3257 RETVAL = boolSV (enable_times);
3258
3259 if (enabled != enable_times)
3260 {
3261 enable_times = enabled;
3262
3263 coro_times_update ();
3264 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3265 }
3266}
3267 OUTPUT:
3268 RETVAL
3269
3270void
3271times (Coro::State self)
3272 PPCODE:
3273{
3274 struct coro *current = SvSTATE (coro_current);
3275
3276 if (expect_false (current == self))
3277 {
3278 coro_times_update ();
3279 coro_times_add (SvSTATE (coro_current));
3280 }
3281
3282 EXTEND (SP, 2);
3283 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3284 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3285
3286 if (expect_false (current == self))
3287 coro_times_sub (SvSTATE (coro_current));
3288}
3289
1940MODULE = Coro::State PACKAGE = Coro 3290MODULE = Coro::State PACKAGE = Coro
1941 3291
1942BOOT: 3292BOOT:
1943{ 3293{
1944 int i;
1945
1946 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1947 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3294 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1948 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3295 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1949 3296 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3297 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
1950 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3298 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
1951 SvREADONLY_on (coro_current); 3299 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3300 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3301 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3302 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3303
3304 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3305 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3306 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3307 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
1952 3308
1953 coro_stash = gv_stashpv ("Coro", TRUE); 3309 coro_stash = gv_stashpv ("Coro", TRUE);
1954 3310
1955 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3311 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
1956 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3312 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
1957 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3313 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
1958 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3314 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
1959 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3315 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
1960 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3316 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
1961
1962 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1963 coro_ready[i] = newAV ();
1964 3317
1965 { 3318 {
1966 SV *sv = perl_get_sv ("Coro::API", TRUE); 3319 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1967 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1968 3320
1969 coroapi.schedule = api_schedule; 3321 coroapi.schedule = api_schedule;
3322 coroapi.schedule_to = api_schedule_to;
1970 coroapi.cede = api_cede; 3323 coroapi.cede = api_cede;
1971 coroapi.cede_notself = api_cede_notself; 3324 coroapi.cede_notself = api_cede_notself;
1972 coroapi.ready = api_ready; 3325 coroapi.ready = api_ready;
1973 coroapi.is_ready = api_is_ready; 3326 coroapi.is_ready = api_is_ready;
1974 coroapi.nready = &coro_nready; 3327 coroapi.nready = coro_nready;
1975 coroapi.current = coro_current; 3328 coroapi.current = coro_current;
1976 3329
1977 GCoroAPI = &coroapi; 3330 /*GCoroAPI = &coroapi;*/
1978 sv_setiv (sv, (IV)&coroapi); 3331 sv_setiv (sv, (IV)&coroapi);
1979 SvREADONLY_on (sv); 3332 SvREADONLY_on (sv);
1980 } 3333 }
1981} 3334}
3335
3336void
3337terminate (...)
3338 CODE:
3339 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3340
3341void
3342schedule (...)
3343 CODE:
3344 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3345
3346void
3347schedule_to (...)
3348 CODE:
3349 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3350
3351void
3352cede_to (...)
3353 CODE:
3354 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3355
3356void
3357cede (...)
3358 CODE:
3359 CORO_EXECUTE_SLF_XS (slf_init_cede);
3360
3361void
3362cede_notself (...)
3363 CODE:
3364 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
1982 3365
1983void 3366void
1984_set_current (SV *current) 3367_set_current (SV *current)
1985 PROTOTYPE: $ 3368 PROTOTYPE: $
1986 CODE: 3369 CODE:
1987 SvREFCNT_dec (SvRV (coro_current)); 3370 SvREFCNT_dec (SvRV (coro_current));
1988 SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); 3371 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1989 3372
1990void 3373void
1991_set_readyhook (SV *hook) 3374_set_readyhook (SV *hook)
1992 PROTOTYPE: $ 3375 PROTOTYPE: $
1993 CODE: 3376 CODE:
1994 LOCK;
1995 SvREFCNT_dec (coro_readyhook); 3377 SvREFCNT_dec (coro_readyhook);
3378 SvGETMAGIC (hook);
1996 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3379 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1997 UNLOCK;
1998 3380
1999int 3381int
2000prio (Coro::State coro, int newprio = 0) 3382prio (Coro::State coro, int newprio = 0)
3383 PROTOTYPE: $;$
2001 ALIAS: 3384 ALIAS:
2002 nice = 1 3385 nice = 1
2003 CODE: 3386 CODE:
2004{ 3387{
2005 RETVAL = coro->prio; 3388 RETVAL = coro->prio;
… …
2007 if (items > 1) 3390 if (items > 1)
2008 { 3391 {
2009 if (ix) 3392 if (ix)
2010 newprio = coro->prio - newprio; 3393 newprio = coro->prio - newprio;
2011 3394
2012 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3395 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2013 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3396 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2014 3397
2015 coro->prio = newprio; 3398 coro->prio = newprio;
2016 } 3399 }
2017} 3400}
2018 OUTPUT: 3401 OUTPUT:
… …
2020 3403
2021SV * 3404SV *
2022ready (SV *self) 3405ready (SV *self)
2023 PROTOTYPE: $ 3406 PROTOTYPE: $
2024 CODE: 3407 CODE:
2025 RETVAL = boolSV (api_ready (self)); 3408 RETVAL = boolSV (api_ready (aTHX_ self));
2026 OUTPUT: 3409 OUTPUT:
2027 RETVAL 3410 RETVAL
2028 3411
2029int 3412int
2030nready (...) 3413nready (...)
… …
2032 CODE: 3415 CODE:
2033 RETVAL = coro_nready; 3416 RETVAL = coro_nready;
2034 OUTPUT: 3417 OUTPUT:
2035 RETVAL 3418 RETVAL
2036 3419
2037# for async_pool speedup
2038void 3420void
2039_pool_1 (SV *cb) 3421suspend (Coro::State self)
3422 PROTOTYPE: $
2040 CODE: 3423 CODE:
2041{ 3424 self->flags |= CF_SUSPENDED;
2042 struct coro *coro = SvSTATE (coro_current);
2043 HV *hv = (HV *)SvRV (coro_current);
2044 AV *defav = GvAV (PL_defgv);
2045 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2046 AV *invoke_av;
2047 int i, len;
2048 3425
2049 if (!invoke) 3426void
3427resume (Coro::State self)
3428 PROTOTYPE: $
3429 CODE:
3430 self->flags &= ~CF_SUSPENDED;
3431
3432void
3433_pool_handler (...)
3434 CODE:
3435 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3436
3437void
3438async_pool (SV *cv, ...)
3439 PROTOTYPE: &@
3440 PPCODE:
3441{
3442 HV *hv = (HV *)av_pop (av_async_pool);
3443 AV *av = newAV ();
3444 SV *cb = ST (0);
3445 int i;
3446
3447 av_extend (av, items - 2);
3448 for (i = 1; i < items; ++i)
3449 av_push (av, SvREFCNT_inc_NN (ST (i)));
3450
3451 if ((SV *)hv == &PL_sv_undef)
2050 { 3452 {
2051 SV *old = PL_diehook; 3453 PUSHMARK (SP);
2052 PL_diehook = 0; 3454 EXTEND (SP, 2);
2053 SvREFCNT_dec (old); 3455 PUSHs (sv_Coro);
2054 croak ("\3async_pool terminate\2\n"); 3456 PUSHs ((SV *)cv_pool_handler);
3457 PUTBACK;
3458 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3459 SPAGAIN;
3460
3461 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
2055 } 3462 }
2056 3463
2057 SvREFCNT_dec (coro->saved_deffh);
2058 coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
2059
2060 hv_store (hv, "desc", sizeof ("desc") - 1,
2061 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2062
2063 invoke_av = (AV *)SvRV (invoke);
2064 len = av_len (invoke_av);
2065
2066 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2067
2068 if (len > 0)
2069 { 3464 {
2070 av_fill (defav, len - 1); 3465 struct coro *coro = SvSTATE_hv (hv);
2071 for (i = 0; i < len; ++i) 3466
2072 av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); 3467 assert (!coro->invoke_cb);
3468 assert (!coro->invoke_av);
3469 coro->invoke_cb = SvREFCNT_inc (cb);
3470 coro->invoke_av = av;
2073 } 3471 }
2074 3472
3473 api_ready (aTHX_ (SV *)hv);
3474
3475 if (GIMME_V != G_VOID)
3476 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3477 else
2075 SvREFCNT_dec (invoke); 3478 SvREFCNT_dec (hv);
2076} 3479}
2077 3480
2078void 3481SV *
2079_pool_2 (SV *cb) 3482rouse_cb ()
3483 PROTOTYPE:
2080 CODE: 3484 CODE:
2081{ 3485 RETVAL = coro_new_rouse_cb (aTHX);
2082 struct coro *coro = SvSTATE (coro_current);
2083
2084 sv_setsv (cb, &PL_sv_undef);
2085
2086 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2087 coro->saved_deffh = 0;
2088
2089 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2090 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2091 {
2092 SV *old = PL_diehook;
2093 PL_diehook = 0;
2094 SvREFCNT_dec (old);
2095 croak ("\3async_pool terminate\2\n");
2096 }
2097
2098 av_clear (GvAV (PL_defgv));
2099 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2100 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2101
2102 coro->prio = 0;
2103
2104 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2105 api_trace (coro_current, 0);
2106
2107 av_push (av_async_pool, newSVsv (coro_current));
2108}
2109
2110#if 0
2111
2112void
2113_generator_call (...)
2114 PROTOTYPE: @
2115 PPCODE:
2116 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2117 xxxx
2118 abort ();
2119
2120SV *
2121gensub (SV *sub, ...)
2122 PROTOTYPE: &;@
2123 CODE:
2124{
2125 struct coro *coro;
2126 MAGIC *mg;
2127 CV *xcv;
2128 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2129 int i;
2130
2131 CvGV (ncv) = CvGV (cv);
2132 CvFILE (ncv) = CvFILE (cv);
2133
2134 Newz (0, coro, 1, struct coro);
2135 coro->args = newAV ();
2136 coro->flags = CF_NEW;
2137
2138 av_extend (coro->args, items - 1);
2139 for (i = 1; i < items; i++)
2140 av_push (coro->args, newSVsv (ST (i)));
2141
2142 CvISXSUB_on (ncv);
2143 CvXSUBANY (ncv).any_ptr = (void *)coro;
2144
2145 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2146
2147 CvXSUB (ncv) = CvXSUB (xcv);
2148 CvANON_on (ncv);
2149
2150 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2151 RETVAL = newRV_noinc ((SV *)ncv);
2152}
2153 OUTPUT: 3486 OUTPUT:
2154 RETVAL 3487 RETVAL
2155 3488
2156#endif 3489void
3490rouse_wait (...)
3491 PROTOTYPE: ;$
3492 PPCODE:
3493 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2157 3494
3495void
3496on_enter (SV *block)
3497 ALIAS:
3498 on_leave = 1
3499 PROTOTYPE: &
3500 CODE:
3501{
3502 struct coro *coro = SvSTATE_current;
3503 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2158 3504
3505 block = s_get_cv_croak (block);
3506
3507 if (!*avp)
3508 *avp = newAV ();
3509
3510 av_push (*avp, SvREFCNT_inc (block));
3511
3512 if (!ix)
3513 on_enterleave_call (aTHX_ block);
3514
3515 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3516 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3517 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3518}
3519
3520
3521MODULE = Coro::State PACKAGE = PerlIO::cede
3522
3523BOOT:
3524 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3525
3526
2159MODULE = Coro::State PACKAGE = Coro::AIO 3527MODULE = Coro::State PACKAGE = Coro::Semaphore
2160 3528
2161SV * 3529SV *
2162_get_state () 3530new (SV *klass, SV *count = 0)
2163 CODE: 3531 CODE:
2164{ 3532{
2165 struct io_state *data; 3533 int semcnt = 1;
2166 3534
2167 RETVAL = newSV (sizeof (struct io_state)); 3535 if (count)
2168 data = (struct io_state *)SvPVX (RETVAL); 3536 {
2169 SvCUR_set (RETVAL, sizeof (struct io_state)); 3537 SvGETMAGIC (count);
2170 SvPOK_only (RETVAL);
2171 3538
2172 data->errorno = errno; 3539 if (SvOK (count))
2173 data->laststype = PL_laststype; 3540 semcnt = SvIV (count);
2174 data->laststatval = PL_laststatval; 3541 }
2175 data->statcache = PL_statcache; 3542
3543 RETVAL = sv_bless (
3544 coro_waitarray_new (aTHX_ semcnt),
3545 GvSTASH (CvGV (cv))
3546 );
2176} 3547}
2177 OUTPUT: 3548 OUTPUT:
2178 RETVAL 3549 RETVAL
2179 3550
3551# helper for Coro::Channel and others
3552SV *
3553_alloc (int count)
3554 CODE:
3555 RETVAL = coro_waitarray_new (aTHX_ count);
3556 OUTPUT:
3557 RETVAL
3558
3559SV *
3560count (SV *self)
3561 CODE:
3562 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3563 OUTPUT:
3564 RETVAL
3565
2180void 3566void
2181_set_state (char *data_) 3567up (SV *self, int adjust = 1)
2182 PROTOTYPE: $ 3568 ALIAS:
3569 adjust = 1
3570 CODE:
3571 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3572
3573void
3574down (...)
3575 CODE:
3576 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3577
3578void
3579wait (...)
3580 CODE:
3581 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3582
3583void
3584try (SV *self)
3585 PPCODE:
3586{
3587 AV *av = (AV *)SvRV (self);
3588 SV *count_sv = AvARRAY (av)[0];
3589 IV count = SvIVX (count_sv);
3590
3591 if (count > 0)
3592 {
3593 --count;
3594 SvIVX (count_sv) = count;
3595 XSRETURN_YES;
3596 }
3597 else
3598 XSRETURN_NO;
3599}
3600
3601void
3602waiters (SV *self)
3603 PPCODE:
3604{
3605 AV *av = (AV *)SvRV (self);
3606 int wcount = AvFILLp (av) + 1 - 1;
3607
3608 if (GIMME_V == G_SCALAR)
3609 XPUSHs (sv_2mortal (newSViv (wcount)));
3610 else
3611 {
3612 int i;
3613 EXTEND (SP, wcount);
3614 for (i = 1; i <= wcount; ++i)
3615 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3616 }
3617}
3618
3619MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
3620
3621void
3622_may_delete (SV *sem, int count, int extra_refs)
3623 PPCODE:
3624{
3625 AV *av = (AV *)SvRV (sem);
3626
3627 if (SvREFCNT ((SV *)av) == 1 + extra_refs
3628 && AvFILLp (av) == 0 /* no waiters, just count */
3629 && SvIV (AvARRAY (av)[0]) == count)
3630 XSRETURN_YES;
3631
3632 XSRETURN_NO;
3633}
3634
3635MODULE = Coro::State PACKAGE = Coro::Signal
3636
3637SV *
3638new (SV *klass)
2183 CODE: 3639 CODE:
2184{ 3640 RETVAL = sv_bless (
2185 struct io_state *data = (void *)data_; 3641 coro_waitarray_new (aTHX_ 0),
3642 GvSTASH (CvGV (cv))
3643 );
3644 OUTPUT:
3645 RETVAL
2186 3646
2187 errno = data->errorno; 3647void
2188 PL_laststype = data->laststype; 3648wait (...)
2189 PL_laststatval = data->laststatval; 3649 CODE:
2190 PL_statcache = data->statcache; 3650 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3651
3652void
3653broadcast (SV *self)
3654 CODE:
3655{
3656 AV *av = (AV *)SvRV (self);
3657 coro_signal_wake (aTHX_ av, AvFILLp (av));
2191} 3658}
3659
3660void
3661send (SV *self)
3662 CODE:
3663{
3664 AV *av = (AV *)SvRV (self);
3665
3666 if (AvFILLp (av))
3667 coro_signal_wake (aTHX_ av, 1);
3668 else
3669 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3670}
3671
3672IV
3673awaited (SV *self)
3674 CODE:
3675 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3676 OUTPUT:
3677 RETVAL
2192 3678
2193 3679
2194MODULE = Coro::State PACKAGE = Coro::AnyEvent 3680MODULE = Coro::State PACKAGE = Coro::AnyEvent
2195 3681
2196BOOT: 3682BOOT:
2197 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3683 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2198 3684
2199SV * 3685void
2200_schedule (...) 3686_schedule (...)
2201 PROTOTYPE: @
2202 CODE: 3687 CODE:
2203{ 3688{
2204 static int incede; 3689 static int incede;
2205 3690
2206 api_cede_notself (); 3691 api_cede_notself (aTHX);
2207 3692
2208 ++incede; 3693 ++incede;
2209 while (coro_nready >= incede && api_cede ()) 3694 while (coro_nready >= incede && api_cede (aTHX))
2210 ; 3695 ;
2211 3696
2212 sv_setsv (sv_activity, &PL_sv_undef); 3697 sv_setsv (sv_activity, &PL_sv_undef);
2213 if (coro_nready >= incede) 3698 if (coro_nready >= incede)
2214 { 3699 {
2215 PUSHMARK (SP); 3700 PUSHMARK (SP);
2216 PUTBACK; 3701 PUTBACK;
2217 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3702 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2218 SPAGAIN;
2219 } 3703 }
2220 3704
2221 --incede; 3705 --incede;
2222} 3706}
2223 3707
3708
3709MODULE = Coro::State PACKAGE = Coro::AIO
3710
3711void
3712_register (char *target, char *proto, SV *req)
3713 CODE:
3714{
3715 SV *req_cv = s_get_cv_croak (req);
3716 /* newXSproto doesn't return the CV on 5.8 */
3717 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3718 sv_setpv ((SV *)slf_cv, proto);
3719 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3720}
3721

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