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Comparing Coro/Coro/State.xs (file contents):
Revision 1.252 by root, Tue Nov 4 12:08:44 2008 UTC vs.
Revision 1.409 by root, Sun Jun 12 04:29:15 2011 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 58# define BOOT_PAGESIZE (void)0
47#endif 59#endif
48 60
49#if CORO_USE_VALGRIND 61#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 62# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 63#endif
55 64
56/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 66static int cctx_max_idle = 4;
58
59#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \
63 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
64
65#if !PERL_VERSION_ATLEAST (5,6,0)
66# ifndef PL_ppaddr
67# define PL_ppaddr ppaddr
68# endif
69# ifndef call_sv
70# define call_sv perl_call_sv
71# endif
72# ifndef get_sv
73# define get_sv perl_get_sv
74# endif
75# ifndef get_cv
76# define get_cv perl_get_cv
77# endif
78# ifndef IS_PADGV
79# define IS_PADGV(v) 0
80# endif
81# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0
83# endif
84#endif
85
86/* 5.11 */
87#ifndef CxHASARGS
88# define CxHASARGS(cx) (cx)->blk_sub.hasargs
89#endif
90
91/* 5.10.0 */
92#ifndef SvREFCNT_inc_NN
93# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
94#endif
95
96/* 5.8.8 */
97#ifndef GV_NOTQUAL
98# define GV_NOTQUAL 0
99#endif
100#ifndef newSV
101# define newSV(l) NEWSV(0,l)
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108 67
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 68#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 69# undef CORO_STACKGUARD
111#endif 70#endif
112 71
… …
119# define CORO_PREFER_PERL_FUNCTIONS 0 78# define CORO_PREFER_PERL_FUNCTIONS 0
120#endif 79#endif
121 80
122/* The next macros try to return the current stack pointer, in an as 81/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 82 * portable way as possible. */
124#define dSTACKLEVEL volatile char stacklevel
125#define STACKLEVEL ((void *)&stacklevel)
126
127#define IN_DESTRUCT (PL_main_cv == Nullcv)
128
129#if __GNUC__ >= 3 83#if __GNUC__ >= 4
130# define attribute(x) __attribute__(x) 84# define dSTACKLEVEL int stacklevel_dummy
131# define BARRIER __asm__ __volatile__ ("" : : : "memory") 85# define STACKLEVEL __builtin_frame_address (0)
132# define expect(expr,value) __builtin_expect ((expr),(value))
133#else 86#else
134# define attribute(x) 87# define dSTACKLEVEL volatile void *stacklevel
135# define BARRIER 88# define STACKLEVEL ((void *)&stacklevel)
136# define expect(expr,value) (expr)
137#endif 89#endif
138 90
139#define expect_false(expr) expect ((expr) != 0, 0) 91#define IN_DESTRUCT PL_dirty
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 92
144#include "CoroAPI.h" 93#include "CoroAPI.h"
94#define GCoroAPI (&coroapi) /* very sneaky */
145 95
146#ifdef USE_ITHREADS 96#ifdef USE_ITHREADS
147static perl_mutex coro_mutex; 97# if CORO_PTHREAD
148# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 98static void *coro_thx;
149# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) 99# endif
150#else
151# define LOCK (void)0
152# define UNLOCK (void)0
153#endif 100#endif
154 101
155/* helper storage struct for Coro::AIO */ 102/* used in state.h */
156struct io_state 103#define VAR(name,type) VARx(name, PL_ ## name, type)
157{ 104
158 AV *res; 105#ifdef __linux
159 int errorno; 106# include <time.h> /* for timespec */
160 I32 laststype; 107# include <syscall.h> /* for SYS_* */
161 int laststatval; 108# ifdef SYS_clock_gettime
162 Stat_t statcache; 109# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
163}; 110# define CORO_CLOCK_MONOTONIC 1
111# define CORO_CLOCK_THREAD_CPUTIME_ID 3
112# endif
113#endif
164 114
165static double (*nvtime)(); /* so why doesn't it take void? */ 115static double (*nvtime)(); /* so why doesn't it take void? */
116static void (*u2time)(pTHX_ UV ret[2]);
166 117
118/* we hijack an hopefully unused CV flag for our purposes */
119#define CVf_SLF 0x4000
120static OP *pp_slf (pTHX);
121static void slf_destroy (pTHX_ struct coro *coro);
122
123static U32 cctx_gen;
167static size_t coro_stacksize = CORO_STACKSIZE; 124static size_t cctx_stacksize = CORO_STACKSIZE;
168static struct CoroAPI coroapi; 125static struct CoroAPI coroapi;
169static AV *main_mainstack; /* used to differentiate between $main and others */ 126static AV *main_mainstack; /* used to differentiate between $main and others */
170static JMPENV *main_top_env; 127static JMPENV *main_top_env;
171static HV *coro_state_stash, *coro_stash; 128static HV *coro_state_stash, *coro_stash;
172static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 129static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
173 130
131static AV *av_destroy; /* destruction queue */
132static SV *sv_manager; /* the manager coro */
133static SV *sv_idle; /* $Coro::idle */
134
174static GV *irsgv; /* $/ */ 135static GV *irsgv; /* $/ */
175static GV *stdoutgv; /* *STDOUT */ 136static GV *stdoutgv; /* *STDOUT */
176static SV *rv_diehook; 137static SV *rv_diehook;
177static SV *rv_warnhook; 138static SV *rv_warnhook;
178static HV *hv_sig; /* %SIG */ 139static HV *hv_sig; /* %SIG */
179 140
180/* async_pool helper stuff */ 141/* async_pool helper stuff */
181static SV *sv_pool_rss; 142static SV *sv_pool_rss;
182static SV *sv_pool_size; 143static SV *sv_pool_size;
144static SV *sv_async_pool_idle; /* description string */
183static AV *av_async_pool; 145static AV *av_async_pool; /* idle pool */
146static SV *sv_Coro; /* class string */
147static CV *cv_pool_handler;
184 148
185/* Coro::AnyEvent */ 149/* Coro::AnyEvent */
186static SV *sv_activity; 150static SV *sv_activity;
187 151
152/* enable processtime/realtime profiling */
153static char enable_times;
154typedef U32 coro_ts[2];
155static coro_ts time_real, time_cpu;
156static char times_valid;
157
188static struct coro_cctx *cctx_first; 158static struct coro_cctx *cctx_first;
189static int cctx_count, cctx_idle; 159static int cctx_count, cctx_idle;
190 160
191enum { 161enum
162{
192 CC_MAPPED = 0x01, 163 CC_MAPPED = 0x01,
193 CC_NOREUSE = 0x02, /* throw this away after tracing */ 164 CC_NOREUSE = 0x02, /* throw this away after tracing */
194 CC_TRACE = 0x04, 165 CC_TRACE = 0x04,
195 CC_TRACE_SUB = 0x08, /* trace sub calls */ 166 CC_TRACE_SUB = 0x08, /* trace sub calls */
196 CC_TRACE_LINE = 0x10, /* trace each statement */ 167 CC_TRACE_LINE = 0x10, /* trace each statement */
197 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 168 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
198}; 169};
199 170
200/* this is a structure representing a c-level coroutine */ 171/* this is a structure representing a c-level coroutine */
201typedef struct coro_cctx { 172typedef struct coro_cctx
173{
202 struct coro_cctx *next; 174 struct coro_cctx *next;
203 175
204 /* the stack */ 176 /* the stack */
205 void *sptr; 177 void *sptr;
206 size_t ssize; 178 size_t ssize;
… …
209 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 181 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
210 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 182 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
211 JMPENV *top_env; 183 JMPENV *top_env;
212 coro_context cctx; 184 coro_context cctx;
213 185
186 U32 gen;
214#if CORO_USE_VALGRIND 187#if CORO_USE_VALGRIND
215 int valgrind_id; 188 int valgrind_id;
216#endif 189#endif
217 unsigned char flags; 190 unsigned char flags;
218} coro_cctx; 191} coro_cctx;
219 192
193static coro_cctx *cctx_current; /* the currently running cctx */
194
195/*****************************************************************************/
196
197static MGVTBL coro_state_vtbl;
198
220enum { 199enum
200{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 201 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 202 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 203 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 204 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
205 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
206 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 207};
226 208
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 209/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct { 210typedef struct
229 SV *defsv; 211{
230 AV *defav;
231 SV *errsv;
232 SV *irsgv;
233#define VAR(name,type) type name; 212#define VARx(name,expr,type) type name;
234# include "state.h" 213# include "state.h"
235#undef VAR 214#undef VARx
236} perl_slots; 215} perl_slots;
237 216
217// how many context stack entries do we need for perl_slots
238#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 218#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
239 219
240/* this is a structure representing a perl-level coroutine */ 220/* this is a structure representing a perl-level coroutine */
241struct coro { 221struct coro
222{
242 /* the c coroutine allocated to this perl coroutine, if any */ 223 /* the C coroutine allocated to this perl coroutine, if any */
243 coro_cctx *cctx; 224 coro_cctx *cctx;
244 225
245 /* process data */ 226 /* ready queue */
227 struct coro *next_ready;
228
229 /* state data */
230 struct CoroSLF slf_frame; /* saved slf frame */
246 AV *mainstack; 231 AV *mainstack;
247 perl_slots *slot; /* basically the saved sp */ 232 perl_slots *slot; /* basically the saved sp */
248 233
234 CV *startcv; /* the CV to execute */
249 AV *args; /* data associated with this coroutine (initial args) */ 235 AV *args; /* data associated with this coroutine (initial args) */
250 int refcnt; /* coroutines are refcounted, yes */
251 int flags; /* CF_ flags */ 236 int flags; /* CF_ flags */
252 HV *hv; /* the perl hash associated with this coro, if any */ 237 HV *hv; /* the perl hash associated with this coro, if any */
253 238
254 /* statistics */ 239 /* statistics */
255 int usecount; /* number of transfers to this coro */ 240 int usecount; /* number of transfers to this coro */
256 241
257 /* coro process data */ 242 /* coro process data */
258 int prio; 243 int prio;
259 SV *throw; /* exception to be thrown */ 244 SV *except; /* exception to be thrown */
245 SV *rouse_cb; /* last rouse callback */
246 AV *on_destroy; /* callbacks or coros to notify on destroy */
247 AV *status; /* the exit status list */
260 248
261 /* async_pool */ 249 /* async_pool */
262 SV *saved_deffh; 250 SV *saved_deffh;
251 SV *invoke_cb;
252 AV *invoke_av;
253
254 /* on_enter/on_leave */
255 AV *on_enter;
256 AV *on_leave;
257
258 /* swap_sv */
259 AV *swap_sv;
260
261 /* times */
262 coro_ts t_cpu, t_real;
263 263
264 /* linked list */ 264 /* linked list */
265 struct coro *next, *prev; 265 struct coro *next, *prev;
266}; 266};
267 267
268typedef struct coro *Coro__State; 268typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 269typedef struct coro *Coro__State_or_hashref;
270 270
271/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */
273/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */
275
271/** Coro ********************************************************************/ 276/** Coro ********************************************************************/
272 277
273#define PRIO_MAX 3 278#define CORO_PRIO_MAX 3
274#define PRIO_HIGH 1 279#define CORO_PRIO_HIGH 1
275#define PRIO_NORMAL 0 280#define CORO_PRIO_NORMAL 0
276#define PRIO_LOW -1 281#define CORO_PRIO_LOW -1
277#define PRIO_IDLE -3 282#define CORO_PRIO_IDLE -3
278#define PRIO_MIN -4 283#define CORO_PRIO_MIN -4
279 284
280/* for Coro.pm */ 285/* for Coro.pm */
281static SV *coro_current; 286static SV *coro_current;
282static SV *coro_readyhook; 287static SV *coro_readyhook;
283static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 288static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
284static int coro_nready; 289static CV *cv_coro_run;
285static struct coro *coro_first; 290static struct coro *coro_first;
291#define coro_nready coroapi.nready
292
293/** JIT *********************************************************************/
294
295#if CORO_JIT
296 #ifndef CORO_JIT_TYPE
297 #if __x86_64 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
298 #define CORO_JIT_TYPE "amd64-unix"
299 typedef void (*load_save_perl_slots_type)(perl_slots *);
300 #elif __i386 && (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris)
301 #define CORO_JIT_TYPE "x86-unix"
302 typedef void (*load_save_perl_slots_type)(perl_slots *);
303 #else
304 x x x x
305 #undef CORO_JIT
306 #endif
307 #endif
308#endif
309
310#if CORO_JIT
311static load_save_perl_slots_type load_perl_slots, save_perl_slots;
312#endif
313
314/** Coro::Select ************************************************************/
315
316static OP *(*coro_old_pp_sselect) (pTHX);
317static SV *coro_select_select;
318
319/* horrible hack, but if it works... */
320static OP *
321coro_pp_sselect (pTHX)
322{
323 dSP;
324 PUSHMARK (SP - 4); /* fake argument list */
325 XPUSHs (coro_select_select);
326 PUTBACK;
327
328 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
329 PL_op->op_flags |= OPf_STACKED;
330 PL_op->op_private = 0;
331 return PL_ppaddr [OP_ENTERSUB](aTHX);
332}
333
334/** time stuff **************************************************************/
335
336#ifdef HAS_GETTIMEOFDAY
337
338ECB_INLINE void
339coro_u2time (pTHX_ UV ret[2])
340{
341 struct timeval tv;
342 gettimeofday (&tv, 0);
343
344 ret [0] = tv.tv_sec;
345 ret [1] = tv.tv_usec;
346}
347
348ECB_INLINE double
349coro_nvtime ()
350{
351 struct timeval tv;
352 gettimeofday (&tv, 0);
353
354 return tv.tv_sec + tv.tv_usec * 1e-6;
355}
356
357ECB_INLINE void
358time_init (pTHX)
359{
360 nvtime = coro_nvtime;
361 u2time = coro_u2time;
362}
363
364#else
365
366ECB_INLINE void
367time_init (pTHX)
368{
369 SV **svp;
370
371 require_pv ("Time/HiRes.pm");
372
373 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
374
375 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
376 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
377
378 nvtime = INT2PTR (double (*)(), SvIV (*svp));
379
380 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
381 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
382}
383
384#endif
286 385
287/** lowlevel stuff **********************************************************/ 386/** lowlevel stuff **********************************************************/
288 387
289static SV * 388static SV * ecb_noinline
290coro_get_sv (pTHX_ const char *name, int create) 389coro_get_sv (pTHX_ const char *name, int create)
291{ 390{
292#if PERL_VERSION_ATLEAST (5,10,0) 391#if PERL_VERSION_ATLEAST (5,10,0)
293 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 392 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
294 get_sv (name, create); 393 get_sv (name, create);
295#endif 394#endif
296 return get_sv (name, create); 395 return get_sv (name, create);
297} 396}
298 397
299static AV * 398static AV * ecb_noinline
300coro_get_av (pTHX_ const char *name, int create) 399coro_get_av (pTHX_ const char *name, int create)
301{ 400{
302#if PERL_VERSION_ATLEAST (5,10,0) 401#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 402 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_av (name, create); 403 get_av (name, create);
305#endif 404#endif
306 return get_av (name, create); 405 return get_av (name, create);
307} 406}
308 407
309static HV * 408static HV * ecb_noinline
310coro_get_hv (pTHX_ const char *name, int create) 409coro_get_hv (pTHX_ const char *name, int create)
311{ 410{
312#if PERL_VERSION_ATLEAST (5,10,0) 411#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 412 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_hv (name, create); 413 get_hv (name, create);
315#endif 414#endif
316 return get_hv (name, create); 415 return get_hv (name, create);
317} 416}
318 417
319static AV * 418ECB_INLINE void
419coro_times_update ()
420{
421#ifdef coro_clock_gettime
422 struct timespec ts;
423
424 ts.tv_sec = ts.tv_nsec = 0;
425 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
426 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
427
428 ts.tv_sec = ts.tv_nsec = 0;
429 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
430 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
431#else
432 dTHX;
433 UV tv[2];
434
435 u2time (aTHX_ tv);
436 time_real [0] = tv [0];
437 time_real [1] = tv [1] * 1000;
438#endif
439}
440
441ECB_INLINE void
442coro_times_add (struct coro *c)
443{
444 c->t_real [1] += time_real [1];
445 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
446 c->t_real [0] += time_real [0];
447
448 c->t_cpu [1] += time_cpu [1];
449 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
450 c->t_cpu [0] += time_cpu [0];
451}
452
453ECB_INLINE void
454coro_times_sub (struct coro *c)
455{
456 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
457 c->t_real [1] -= time_real [1];
458 c->t_real [0] -= time_real [0];
459
460 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
461 c->t_cpu [1] -= time_cpu [1];
462 c->t_cpu [0] -= time_cpu [0];
463}
464
465/*****************************************************************************/
466/* magic glue */
467
468#define CORO_MAGIC_type_cv 26
469#define CORO_MAGIC_type_state PERL_MAGIC_ext
470
471#define CORO_MAGIC_NN(sv, type) \
472 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
473 ? SvMAGIC (sv) \
474 : mg_find (sv, type))
475
476#define CORO_MAGIC(sv, type) \
477 (ecb_expect_true (SvMAGIC (sv)) \
478 ? CORO_MAGIC_NN (sv, type) \
479 : 0)
480
481#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
482#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
483
484ECB_INLINE MAGIC *
485SvSTATEhv_p (pTHX_ SV *coro)
486{
487 MAGIC *mg;
488
489 if (ecb_expect_true (
490 SvTYPE (coro) == SVt_PVHV
491 && (mg = CORO_MAGIC_state (coro))
492 && mg->mg_virtual == &coro_state_vtbl
493 ))
494 return mg;
495
496 return 0;
497}
498
499ECB_INLINE struct coro *
500SvSTATE_ (pTHX_ SV *coro)
501{
502 MAGIC *mg;
503
504 if (SvROK (coro))
505 coro = SvRV (coro);
506
507 mg = SvSTATEhv_p (aTHX_ coro);
508 if (!mg)
509 croak ("Coro::State object required");
510
511 return (struct coro *)mg->mg_ptr;
512}
513
514#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
515
516/* faster than SvSTATE, but expects a coroutine hv */
517#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
518#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
519
520/*****************************************************************************/
521/* padlist management and caching */
522
523ECB_INLINE AV *
320coro_clone_padlist (pTHX_ CV *cv) 524coro_derive_padlist (pTHX_ CV *cv)
321{ 525{
322 AV *padlist = CvPADLIST (cv); 526 AV *padlist = CvPADLIST (cv);
323 AV *newpadlist, *newpad; 527 AV *newpadlist, *newpad;
324 528
325 newpadlist = newAV (); 529 newpadlist = newAV ();
… …
330 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 534 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
331#endif 535#endif
332 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 536 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
333 --AvFILLp (padlist); 537 --AvFILLp (padlist);
334 538
335 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 539 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
336 av_store (newpadlist, 1, (SV *)newpad); 540 av_store (newpadlist, 1, (SV *)newpad);
337 541
338 return newpadlist; 542 return newpadlist;
339} 543}
340 544
341static void 545ECB_INLINE void
342free_padlist (pTHX_ AV *padlist) 546free_padlist (pTHX_ AV *padlist)
343{ 547{
344 /* may be during global destruction */ 548 /* may be during global destruction */
345 if (SvREFCNT (padlist)) 549 if (!IN_DESTRUCT)
346 { 550 {
347 I32 i = AvFILLp (padlist); 551 I32 i = AvFILLp (padlist);
348 while (i >= 0) 552
553 while (i > 0) /* special-case index 0 */
349 { 554 {
350 SV **svp = av_fetch (padlist, i--, FALSE); 555 /* we try to be extra-careful here */
351 if (svp) 556 AV *av = (AV *)AvARRAY (padlist)[i--];
352 { 557 I32 j = AvFILLp (av);
353 SV *sv; 558
354 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 559 while (j >= 0)
560 SvREFCNT_dec (AvARRAY (av)[j--]);
561
562 AvFILLp (av) = -1;
355 SvREFCNT_dec (sv); 563 SvREFCNT_dec (av);
356
357 SvREFCNT_dec (*svp);
358 }
359 } 564 }
360 565
566 SvREFCNT_dec (AvARRAY (padlist)[0]);
567
568 AvFILLp (padlist) = -1;
361 SvREFCNT_dec ((SV*)padlist); 569 SvREFCNT_dec ((SV*)padlist);
362 } 570 }
363} 571}
364 572
365static int 573static int
366coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 574coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
367{ 575{
368 AV *padlist; 576 AV *padlist;
369 AV *av = (AV *)mg->mg_obj; 577 AV *av = (AV *)mg->mg_obj;
578
579 /* perl manages to free our internal AV and _then_ call us */
580 if (IN_DESTRUCT)
581 return 0;
370 582
371 /* casting is fun. */ 583 /* casting is fun. */
372 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 584 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
373 free_padlist (aTHX_ padlist); 585 free_padlist (aTHX_ padlist);
374 586
375 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 587 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
376 588
377 return 0; 589 return 0;
378} 590}
379
380#define CORO_MAGIC_type_cv PERL_MAGIC_ext
381#define CORO_MAGIC_type_state PERL_MAGIC_ext
382 591
383static MGVTBL coro_cv_vtbl = { 592static MGVTBL coro_cv_vtbl = {
384 0, 0, 0, 0, 593 0, 0, 0, 0,
385 coro_cv_free 594 coro_cv_free
386}; 595};
387 596
388#define CORO_MAGIC(sv,type) \
389 SvMAGIC (sv) \
390 ? SvMAGIC (sv)->mg_type == type \
391 ? SvMAGIC (sv) \
392 : mg_find (sv, type) \
393 : 0
394
395#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
396#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
397
398static struct coro *
399SvSTATE_ (pTHX_ SV *coro)
400{
401 HV *stash;
402 MAGIC *mg;
403
404 if (SvROK (coro))
405 coro = SvRV (coro);
406
407 if (expect_false (SvTYPE (coro) != SVt_PVHV))
408 croak ("Coro::State object required");
409
410 stash = SvSTASH (coro);
411 if (expect_false (stash != coro_stash && stash != coro_state_stash))
412 {
413 /* very slow, but rare, check */
414 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
415 croak ("Coro::State object required");
416 }
417
418 mg = CORO_MAGIC_state (coro);
419 return (struct coro *)mg->mg_ptr;
420}
421
422#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
423
424/* the next two functions merely cache the padlists */ 597/* the next two functions merely cache the padlists */
425static void 598ECB_INLINE void
426get_padlist (pTHX_ CV *cv) 599get_padlist (pTHX_ CV *cv)
427{ 600{
428 MAGIC *mg = CORO_MAGIC_cv (cv); 601 MAGIC *mg = CORO_MAGIC_cv (cv);
429 AV *av; 602 AV *av;
430 603
431 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 604 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
432 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 605 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
433 else 606 else
434 { 607 {
435#if CORO_PREFER_PERL_FUNCTIONS 608#if CORO_PREFER_PERL_FUNCTIONS
436 /* this is probably cleaner? but also slower! */ 609 /* this is probably cleaner? but also slower! */
437 /* in practise, it seems to be less stable */ 610 /* in practise, it seems to be less stable */
438 CV *cp = Perl_cv_clone (cv); 611 CV *cp = Perl_cv_clone (aTHX_ cv);
439 CvPADLIST (cv) = CvPADLIST (cp); 612 CvPADLIST (cv) = CvPADLIST (cp);
440 CvPADLIST (cp) = 0; 613 CvPADLIST (cp) = 0;
441 SvREFCNT_dec (cp); 614 SvREFCNT_dec (cp);
442#else 615#else
443 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 616 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
444#endif 617#endif
445 } 618 }
446} 619}
447 620
448static void 621ECB_INLINE void
449put_padlist (pTHX_ CV *cv) 622put_padlist (pTHX_ CV *cv)
450{ 623{
451 MAGIC *mg = CORO_MAGIC_cv (cv); 624 MAGIC *mg = CORO_MAGIC_cv (cv);
452 AV *av; 625 AV *av;
453 626
454 if (expect_false (!mg)) 627 if (ecb_expect_false (!mg))
455 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 628 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
456 629
457 av = (AV *)mg->mg_obj; 630 av = (AV *)mg->mg_obj;
458 631
459 if (expect_false (AvFILLp (av) >= AvMAX (av))) 632 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
460 av_extend (av, AvMAX (av) + 1); 633 av_extend (av, AvFILLp (av) + 1);
461 634
462 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 635 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
463} 636}
464 637
465/** load & save, init *******************************************************/ 638/** load & save, init *******************************************************/
639
640/* swap sv heads, at least logically */
641static void
642swap_svs (pTHX_ Coro__State c)
643{
644 int i;
645
646 for (i = 0; i <= AvFILLp (c->swap_sv); )
647 {
648 SV *a = AvARRAY (c->swap_sv)[i++];
649 SV *b = AvARRAY (c->swap_sv)[i++];
650
651 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
652 SV tmp;
653
654 /* swap sv_any */
655 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
656
657 /* swap sv_flags */
658 SvFLAGS (&tmp) = SvFLAGS (a);
659 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
660 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
661
662#if PERL_VERSION_ATLEAST (5,10,0)
663 /* perl 5.10 complicates this _quite_ a bit, but it also is
664 * much faster, so no quarrels here. alternatively, we could
665 * sv_upgrade to avoid this.
666 */
667 {
668 /* swap sv_u */
669 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
670
671 /* if SvANY points to the head, we need to adjust the pointers,
672 * as the pointer for a still points to b, and maybe vice versa.
673 */
674 #define svany_in_head(type) \
675 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
676
677 if (svany_in_head (SvTYPE (a)))
678 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
679
680 if (svany_in_head (SvTYPE (b)))
681 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
682 }
683#endif
684 }
685}
686
687#define SWAP_SVS(coro) \
688 if (ecb_expect_false ((coro)->swap_sv)) \
689 swap_svs (aTHX_ (coro))
690
691static void
692on_enterleave_call (pTHX_ SV *cb);
466 693
467static void 694static void
468load_perl (pTHX_ Coro__State c) 695load_perl (pTHX_ Coro__State c)
469{ 696{
470 perl_slots *slot = c->slot; 697 perl_slots *slot = c->slot;
471 c->slot = 0; 698 c->slot = 0;
472 699
473 PL_mainstack = c->mainstack; 700 PL_mainstack = c->mainstack;
474 701
475 GvSV (PL_defgv) = slot->defsv; 702#if CORO_JIT
476 GvAV (PL_defgv) = slot->defav; 703 load_perl_slots (slot);
477 GvSV (PL_errgv) = slot->errsv; 704#else
478 GvSV (irsgv) = slot->irsgv;
479
480 #define VAR(name,type) PL_ ## name = slot->name; 705 #define VARx(name,expr,type) expr = slot->name;
481 # include "state.h" 706 # include "state.h"
482 #undef VAR 707 #undef VARx
708#endif
483 709
484 { 710 {
485 dSP; 711 dSP;
486 712
487 CV *cv; 713 CV *cv;
488 714
489 /* now do the ugly restore mess */ 715 /* now do the ugly restore mess */
490 while (expect_true (cv = (CV *)POPs)) 716 while (ecb_expect_true (cv = (CV *)POPs))
491 { 717 {
492 put_padlist (aTHX_ cv); /* mark this padlist as available */ 718 put_padlist (aTHX_ cv); /* mark this padlist as available */
493 CvDEPTH (cv) = PTR2IV (POPs); 719 CvDEPTH (cv) = PTR2IV (POPs);
494 CvPADLIST (cv) = (AV *)POPs; 720 CvPADLIST (cv) = (AV *)POPs;
495 } 721 }
496 722
497 PUTBACK; 723 PUTBACK;
498 } 724 }
725
726 slf_frame = c->slf_frame;
727 CORO_THROW = c->except;
728
729 if (ecb_expect_false (enable_times))
730 {
731 if (ecb_expect_false (!times_valid))
732 coro_times_update ();
733
734 coro_times_sub (c);
735 }
736
737 if (ecb_expect_false (c->on_enter))
738 {
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
742 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
743 }
744
745 SWAP_SVS (c);
499} 746}
500 747
501static void 748static void
502save_perl (pTHX_ Coro__State c) 749save_perl (pTHX_ Coro__State c)
503{ 750{
751 SWAP_SVS (c);
752
753 if (ecb_expect_false (c->on_leave))
754 {
755 int i;
756
757 for (i = AvFILLp (c->on_leave); i >= 0; --i)
758 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
759 }
760
761 times_valid = 0;
762
763 if (ecb_expect_false (enable_times))
764 {
765 coro_times_update (); times_valid = 1;
766 coro_times_add (c);
767 }
768
769 c->except = CORO_THROW;
770 c->slf_frame = slf_frame;
771
504 { 772 {
505 dSP; 773 dSP;
506 I32 cxix = cxstack_ix; 774 I32 cxix = cxstack_ix;
507 PERL_CONTEXT *ccstk = cxstack; 775 PERL_CONTEXT *ccstk = cxstack;
508 PERL_SI *top_si = PL_curstackinfo; 776 PERL_SI *top_si = PL_curstackinfo;
… …
514 782
515 XPUSHs (Nullsv); 783 XPUSHs (Nullsv);
516 /* this loop was inspired by pp_caller */ 784 /* this loop was inspired by pp_caller */
517 for (;;) 785 for (;;)
518 { 786 {
519 while (expect_true (cxix >= 0)) 787 while (ecb_expect_true (cxix >= 0))
520 { 788 {
521 PERL_CONTEXT *cx = &ccstk[cxix--]; 789 PERL_CONTEXT *cx = &ccstk[cxix--];
522 790
523 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 791 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
524 { 792 {
525 CV *cv = cx->blk_sub.cv; 793 CV *cv = cx->blk_sub.cv;
526 794
527 if (expect_true (CvDEPTH (cv))) 795 if (ecb_expect_true (CvDEPTH (cv)))
528 { 796 {
529 EXTEND (SP, 3); 797 EXTEND (SP, 3);
530 PUSHs ((SV *)CvPADLIST (cv)); 798 PUSHs ((SV *)CvPADLIST (cv));
531 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 799 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
532 PUSHs ((SV *)cv); 800 PUSHs ((SV *)cv);
… …
535 get_padlist (aTHX_ cv); 803 get_padlist (aTHX_ cv);
536 } 804 }
537 } 805 }
538 } 806 }
539 807
540 if (expect_true (top_si->si_type == PERLSI_MAIN)) 808 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
541 break; 809 break;
542 810
543 top_si = top_si->si_prev; 811 top_si = top_si->si_prev;
544 ccstk = top_si->si_cxstack; 812 ccstk = top_si->si_cxstack;
545 cxix = top_si->si_cxix; 813 cxix = top_si->si_cxix;
… …
547 815
548 PUTBACK; 816 PUTBACK;
549 } 817 }
550 818
551 /* allocate some space on the context stack for our purposes */ 819 /* allocate some space on the context stack for our purposes */
552 /* we manually unroll here, as usually 2 slots is enough */ 820 if (ecb_expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
553 if (SLOT_COUNT >= 1) CXINC;
554 if (SLOT_COUNT >= 2) CXINC;
555 if (SLOT_COUNT >= 3) CXINC;
556 { 821 {
557 int i; 822 unsigned int i;
823
558 for (i = 3; i < SLOT_COUNT; ++i) 824 for (i = 0; i < SLOT_COUNT; ++i)
559 CXINC; 825 CXINC;
560 } 826
561 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 827 cxstack_ix -= SLOT_COUNT; /* undo allocation */
828 }
562 829
563 c->mainstack = PL_mainstack; 830 c->mainstack = PL_mainstack;
564 831
565 { 832 {
566 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 833 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
567 834
568 slot->defav = GvAV (PL_defgv); 835#if CORO_JIT
569 slot->defsv = DEFSV; 836 save_perl_slots (slot);
570 slot->errsv = ERRSV; 837#else
571 slot->irsgv = GvSV (irsgv);
572
573 #define VAR(name,type) slot->name = PL_ ## name; 838 #define VARx(name,expr,type) slot->name = expr;
574 # include "state.h" 839 # include "state.h"
575 #undef VAR 840 #undef VARx
841#endif
576 } 842 }
577} 843}
578 844
579/* 845/*
580 * allocate various perl stacks. This is an exact copy 846 * allocate various perl stacks. This is almost an exact copy
581 * of perl.c:init_stacks, except that it uses less memory 847 * of perl.c:init_stacks, except that it uses less memory
582 * on the (sometimes correct) assumption that coroutines do 848 * on the (sometimes correct) assumption that coroutines do
583 * not usually need a lot of stackspace. 849 * not usually need a lot of stackspace.
584 */ 850 */
585#if CORO_PREFER_PERL_FUNCTIONS 851#if CORO_PREFER_PERL_FUNCTIONS
586# define coro_init_stacks init_stacks 852# define coro_init_stacks(thx) init_stacks ()
587#else 853#else
588static void 854static void
589coro_init_stacks (pTHX) 855coro_init_stacks (pTHX)
590{ 856{
591 PL_curstackinfo = new_stackinfo(32, 8); 857 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
592 PL_curstackinfo->si_type = PERLSI_MAIN; 858 PL_curstackinfo->si_type = PERLSI_MAIN;
593 PL_curstack = PL_curstackinfo->si_stack; 859 PL_curstack = PL_curstackinfo->si_stack;
594 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 860 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
595 861
596 PL_stack_base = AvARRAY(PL_curstack); 862 PL_stack_base = AvARRAY(PL_curstack);
… …
628 894
629/* 895/*
630 * destroy the stacks, the callchain etc... 896 * destroy the stacks, the callchain etc...
631 */ 897 */
632static void 898static void
633coro_destroy_stacks (pTHX) 899coro_destruct_stacks (pTHX)
634{ 900{
635 while (PL_curstackinfo->si_next) 901 while (PL_curstackinfo->si_next)
636 PL_curstackinfo = PL_curstackinfo->si_next; 902 PL_curstackinfo = PL_curstackinfo->si_next;
637 903
638 while (PL_curstackinfo) 904 while (PL_curstackinfo)
… …
654#if !PERL_VERSION_ATLEAST (5,10,0) 920#if !PERL_VERSION_ATLEAST (5,10,0)
655 Safefree (PL_retstack); 921 Safefree (PL_retstack);
656#endif 922#endif
657} 923}
658 924
925#define CORO_RSS \
926 rss += sizeof (SYM (curstackinfo)); \
927 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
928 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
929 rss += SYM (tmps_max) * sizeof (SV *); \
930 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
931 rss += SYM (scopestack_max) * sizeof (I32); \
932 rss += SYM (savestack_max) * sizeof (ANY);
933
659static size_t 934static size_t
660coro_rss (pTHX_ struct coro *coro) 935coro_rss (pTHX_ struct coro *coro)
661{ 936{
662 size_t rss = sizeof (*coro); 937 size_t rss = sizeof (*coro);
663 938
664 if (coro->mainstack) 939 if (coro->mainstack)
665 { 940 {
666 perl_slots tmp_slot;
667 perl_slots *slot;
668
669 if (coro->flags & CF_RUNNING) 941 if (coro->flags & CF_RUNNING)
670 { 942 {
671 slot = &tmp_slot; 943 #define SYM(sym) PL_ ## sym
672 944 CORO_RSS;
673 #define VAR(name,type) slot->name = PL_ ## name;
674 # include "state.h"
675 #undef VAR 945 #undef SYM
676 } 946 }
677 else 947 else
678 slot = coro->slot;
679
680 if (slot)
681 { 948 {
682 rss += sizeof (slot->curstackinfo); 949 #define SYM(sym) coro->slot->sym
683 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 950 CORO_RSS;
684 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 951 #undef SYM
685 rss += slot->tmps_max * sizeof (SV *);
686 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
687 rss += slot->scopestack_max * sizeof (I32);
688 rss += slot->savestack_max * sizeof (ANY);
689
690#if !PERL_VERSION_ATLEAST (5,10,0)
691 rss += slot->retstack_max * sizeof (OP *);
692#endif
693 } 952 }
694 } 953 }
695 954
696 return rss; 955 return rss;
697} 956}
… …
710#endif 969#endif
711 970
712/* 971/*
713 * This overrides the default magic get method of %SIG elements. 972 * This overrides the default magic get method of %SIG elements.
714 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 973 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
715 * and instead of tryign to save and restore the hash elements, we just provide 974 * and instead of trying to save and restore the hash elements (extremely slow),
716 * readback here. 975 * we just provide our own readback here.
717 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
718 * not expecting this to actually change the hook. This is a potential problem
719 * when a schedule happens then, but we ignore this.
720 */ 976 */
721static int 977static int ecb_cold
722coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 978coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
723{ 979{
724 const char *s = MgPV_nolen_const (mg); 980 const char *s = MgPV_nolen_const (mg);
725 981
726 if (*s == '_') 982 if (*s == '_')
… …
738 } 994 }
739 995
740 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 996 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
741} 997}
742 998
743static int 999static int ecb_cold
744coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1000coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
745{ 1001{
746 const char *s = MgPV_nolen_const (mg); 1002 const char *s = MgPV_nolen_const (mg);
747 1003
748 if (*s == '_') 1004 if (*s == '_')
… …
762 } 1018 }
763 1019
764 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
765} 1021}
766 1022
767static int 1023static int ecb_cold
768coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
769{ 1025{
770 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
771 1027
772 if (*s == '_') 1028 if (*s == '_')
… …
777 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1033 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
778 1034
779 if (svp) 1035 if (svp)
780 { 1036 {
781 SV *old = *svp; 1037 SV *old = *svp;
782 *svp = newSVsv (sv); 1038 *svp = SvOK (sv) ? newSVsv (sv) : 0;
783 SvREFCNT_dec (old); 1039 SvREFCNT_dec (old);
784 return 0; 1040 return 0;
785 } 1041 }
786 } 1042 }
787 1043
788 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
789} 1045}
790 1046
791static void 1047static void
1048prepare_nop (pTHX_ struct coro_transfer_args *ta)
1049{
1050 /* kind of mega-hacky, but works */
1051 ta->next = ta->prev = (struct coro *)ta;
1052}
1053
1054static int
1055slf_check_nop (pTHX_ struct CoroSLF *frame)
1056{
1057 return 0;
1058}
1059
1060static int
1061slf_check_repeat (pTHX_ struct CoroSLF *frame)
1062{
1063 return 1;
1064}
1065
1066static UNOP init_perl_op;
1067
1068ecb_noinline static void /* noinline to keep it out of the transfer fast path */
792coro_setup (pTHX_ struct coro *coro) 1069init_perl (pTHX_ struct coro *coro)
793{ 1070{
794 /* 1071 /*
795 * emulate part of the perl startup here. 1072 * emulate part of the perl startup here.
796 */ 1073 */
797 coro_init_stacks (aTHX); 1074 coro_init_stacks (aTHX);
798 1075
799 PL_runops = RUNOPS_DEFAULT; 1076 PL_runops = RUNOPS_DEFAULT;
800 PL_curcop = &PL_compiling; 1077 PL_curcop = &PL_compiling;
801 PL_in_eval = EVAL_NULL; 1078 PL_in_eval = EVAL_NULL;
802 PL_comppad = 0; 1079 PL_comppad = 0;
1080 PL_comppad_name = 0;
1081 PL_comppad_name_fill = 0;
1082 PL_comppad_name_floor = 0;
803 PL_curpm = 0; 1083 PL_curpm = 0;
804 PL_curpad = 0; 1084 PL_curpad = 0;
805 PL_localizing = 0; 1085 PL_localizing = 0;
806 PL_dirty = 0;
807 PL_restartop = 0; 1086 PL_restartop = 0;
808#if PERL_VERSION_ATLEAST (5,10,0) 1087#if PERL_VERSION_ATLEAST (5,10,0)
809 PL_parser = 0; 1088 PL_parser = 0;
810#endif 1089#endif
1090 PL_hints = 0;
811 1091
812 /* recreate the die/warn hooks */ 1092 /* recreate the die/warn hooks */
813 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1093 PL_diehook = SvREFCNT_inc (rv_diehook);
814 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1094 PL_warnhook = SvREFCNT_inc (rv_warnhook);
815 1095
816 GvSV (PL_defgv) = newSV (0); 1096 GvSV (PL_defgv) = newSV (0);
817 GvAV (PL_defgv) = coro->args; coro->args = 0; 1097 GvAV (PL_defgv) = coro->args; coro->args = 0;
818 GvSV (PL_errgv) = newSV (0); 1098 GvSV (PL_errgv) = newSV (0);
819 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1099 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1100 GvHV (PL_hintgv) = 0;
820 PL_rs = newSVsv (GvSV (irsgv)); 1101 PL_rs = newSVsv (GvSV (irsgv));
821 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1102 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
822 1103
823 { 1104 {
824 dSP; 1105 dSP;
825 LOGOP myop; 1106 UNOP myop;
826 1107
827 Zero (&myop, 1, LOGOP); 1108 Zero (&myop, 1, UNOP);
828 myop.op_next = Nullop; 1109 myop.op_next = Nullop;
1110 myop.op_type = OP_ENTERSUB;
829 myop.op_flags = OPf_WANT_VOID; 1111 myop.op_flags = OPf_WANT_VOID;
830 1112
831 PUSHMARK (SP); 1113 PUSHMARK (SP);
832 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1114 PUSHs ((SV *)coro->startcv);
833 PUTBACK; 1115 PUTBACK;
834 PL_op = (OP *)&myop; 1116 PL_op = (OP *)&myop;
835 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1117 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
836 SPAGAIN;
837 } 1118 }
838 1119
839 /* this newly created coroutine might be run on an existing cctx which most 1120 /* this newly created coroutine might be run on an existing cctx which most
840 * likely was suspended in set_stacklevel, called from entersub. 1121 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
841 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
842 * so we ENTER here for symmetry
843 */ 1122 */
844 ENTER; 1123 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
845} 1124 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1125 slf_frame.destroy = 0;
846 1126
1127 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1128 init_perl_op.op_next = PL_op;
1129 init_perl_op.op_type = OP_ENTERSUB;
1130 init_perl_op.op_ppaddr = pp_slf;
1131 /* no flags etc. required, as an init function won't be called */
1132
1133 PL_op = (OP *)&init_perl_op;
1134
1135 /* copy throw, in case it was set before init_perl */
1136 CORO_THROW = coro->except;
1137
1138 SWAP_SVS (coro);
1139
1140 if (ecb_expect_false (enable_times))
1141 {
1142 coro_times_update ();
1143 coro_times_sub (coro);
1144 }
1145}
1146
847static void 1147static void
848coro_destroy (pTHX_ struct coro *coro) 1148coro_unwind_stacks (pTHX)
849{ 1149{
850 if (!IN_DESTRUCT) 1150 if (!IN_DESTRUCT)
851 { 1151 {
852 /* restore all saved variables and stuff */ 1152 /* restore all saved variables and stuff */
853 LEAVE_SCOPE (0); 1153 LEAVE_SCOPE (0);
… …
861 POPSTACK_TO (PL_mainstack); 1161 POPSTACK_TO (PL_mainstack);
862 1162
863 /* unwind main stack */ 1163 /* unwind main stack */
864 dounwind (-1); 1164 dounwind (-1);
865 } 1165 }
1166}
866 1167
867 SvREFCNT_dec (GvSV (PL_defgv)); 1168static void
868 SvREFCNT_dec (GvAV (PL_defgv)); 1169destroy_perl (pTHX_ struct coro *coro)
869 SvREFCNT_dec (GvSV (PL_errgv)); 1170{
870 SvREFCNT_dec (PL_defoutgv); 1171 SV *svf [9];
871 SvREFCNT_dec (PL_rs);
872 SvREFCNT_dec (GvSV (irsgv));
873 1172
874 SvREFCNT_dec (PL_diehook);
875 SvREFCNT_dec (PL_warnhook);
876 1173 {
1174 SV *old_current = SvRV (coro_current);
1175 struct coro *current = SvSTATE (old_current);
1176
1177 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1178
1179 save_perl (aTHX_ current);
1180
1181 /* this will cause transfer_check to croak on block*/
1182 SvRV_set (coro_current, (SV *)coro->hv);
1183
1184 load_perl (aTHX_ coro);
1185
1186 coro_unwind_stacks (aTHX);
1187
1188 /* restore swapped sv's */
1189 SWAP_SVS (coro);
1190
1191 coro_destruct_stacks (aTHX);
1192
1193 // now save some sv's to be free'd later
1194 svf [0] = GvSV (PL_defgv);
1195 svf [1] = (SV *)GvAV (PL_defgv);
1196 svf [2] = GvSV (PL_errgv);
1197 svf [3] = (SV *)PL_defoutgv;
1198 svf [4] = PL_rs;
1199 svf [5] = GvSV (irsgv);
1200 svf [6] = (SV *)GvHV (PL_hintgv);
1201 svf [7] = PL_diehook;
1202 svf [8] = PL_warnhook;
1203 assert (9 == sizeof (svf) / sizeof (*svf));
1204
1205 SvRV_set (coro_current, old_current);
1206
1207 load_perl (aTHX_ current);
1208 }
1209
1210 {
1211 unsigned int i;
1212
1213 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1214 SvREFCNT_dec (svf [i]);
1215
877 SvREFCNT_dec (coro->saved_deffh); 1216 SvREFCNT_dec (coro->saved_deffh);
878 SvREFCNT_dec (coro->throw); 1217 SvREFCNT_dec (coro->rouse_cb);
879 1218 SvREFCNT_dec (coro->invoke_cb);
880 coro_destroy_stacks (aTHX); 1219 SvREFCNT_dec (coro->invoke_av);
1220 }
881} 1221}
882 1222
883static void 1223ECB_INLINE void
884free_coro_mortal (pTHX) 1224free_coro_mortal (pTHX)
885{ 1225{
886 if (expect_true (coro_mortal)) 1226 if (ecb_expect_true (coro_mortal))
887 { 1227 {
888 SvREFCNT_dec (coro_mortal); 1228 SvREFCNT_dec ((SV *)coro_mortal);
889 coro_mortal = 0; 1229 coro_mortal = 0;
890 } 1230 }
891} 1231}
892 1232
893static int 1233static int
894runops_trace (pTHX) 1234runops_trace (pTHX)
895{ 1235{
896 COP *oldcop = 0; 1236 COP *oldcop = 0;
897 int oldcxix = -2; 1237 int oldcxix = -2;
898 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
899 coro_cctx *cctx = coro->cctx;
900 1238
901 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1239 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
902 { 1240 {
903 PERL_ASYNC_CHECK (); 1241 PERL_ASYNC_CHECK ();
904 1242
905 if (cctx->flags & CC_TRACE_ALL) 1243 if (cctx_current->flags & CC_TRACE_ALL)
906 { 1244 {
907 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1245 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
908 { 1246 {
909 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1247 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
910 SV **bot, **top; 1248 SV **bot, **top;
911 AV *av = newAV (); /* return values */ 1249 AV *av = newAV (); /* return values */
912 SV **cb; 1250 SV **cb;
… …
949 1287
950 if (PL_curcop != &PL_compiling) 1288 if (PL_curcop != &PL_compiling)
951 { 1289 {
952 SV **cb; 1290 SV **cb;
953 1291
954 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1292 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
955 { 1293 {
956 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1294 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
957 1295
958 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1296 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
959 { 1297 {
960 runops_proc_t old_runops = PL_runops;
961 dSP; 1298 dSP;
962 GV *gv = CvGV (cx->blk_sub.cv); 1299 GV *gv = CvGV (cx->blk_sub.cv);
963 SV *fullname = sv_2mortal (newSV (0)); 1300 SV *fullname = sv_2mortal (newSV (0));
964 1301
965 if (isGV (gv)) 1302 if (isGV (gv))
… …
970 SAVETMPS; 1307 SAVETMPS;
971 EXTEND (SP, 3); 1308 EXTEND (SP, 3);
972 PUSHMARK (SP); 1309 PUSHMARK (SP);
973 PUSHs (&PL_sv_yes); 1310 PUSHs (&PL_sv_yes);
974 PUSHs (fullname); 1311 PUSHs (fullname);
975 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1312 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
976 PUTBACK; 1313 PUTBACK;
977 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1314 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
978 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1315 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
979 SPAGAIN; 1316 SPAGAIN;
980 FREETMPS; 1317 FREETMPS;
… …
983 } 1320 }
984 1321
985 oldcxix = cxstack_ix; 1322 oldcxix = cxstack_ix;
986 } 1323 }
987 1324
988 if (cctx->flags & CC_TRACE_LINE) 1325 if (cctx_current->flags & CC_TRACE_LINE)
989 { 1326 {
990 dSP; 1327 dSP;
991 1328
992 PL_runops = RUNOPS_DEFAULT; 1329 PL_runops = RUNOPS_DEFAULT;
993 ENTER; 1330 ENTER;
… …
1012 1349
1013 TAINT_NOT; 1350 TAINT_NOT;
1014 return 0; 1351 return 0;
1015} 1352}
1016 1353
1017/* inject a fake call to Coro::State::_cctx_init into the execution */ 1354static struct CoroSLF cctx_ssl_frame;
1018/* _cctx_init should be careful, as it could be called at almost any time */
1019/* during execution of a perl program */
1020static void NOINLINE
1021cctx_prepare (pTHX_ coro_cctx *cctx)
1022{
1023 dSP;
1024 LOGOP myop;
1025 1355
1356static void
1357slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1358{
1359 ta->prev = 0;
1360}
1361
1362static int
1363slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1364{
1365 *frame = cctx_ssl_frame;
1366
1367 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1368}
1369
1370/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1371static void ecb_noinline
1372cctx_prepare (pTHX)
1373{
1026 PL_top_env = &PL_start_env; 1374 PL_top_env = &PL_start_env;
1027 1375
1028 if (cctx->flags & CC_TRACE) 1376 if (cctx_current->flags & CC_TRACE)
1029 PL_runops = runops_trace; 1377 PL_runops = runops_trace;
1030 1378
1031 Zero (&myop, 1, LOGOP); 1379 /* we already must be executing an SLF op, there is no other valid way
1032 myop.op_next = PL_op; 1380 * that can lead to creation of a new cctx */
1033 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1381 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1382 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1034 1383
1035 PUSHMARK (SP); 1384 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1036 EXTEND (SP, 2); 1385 cctx_ssl_frame = slf_frame;
1037 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1386
1038 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1387 slf_frame.prepare = slf_prepare_set_stacklevel;
1039 PUTBACK; 1388 slf_frame.check = slf_check_set_stacklevel;
1040 PL_op = (OP *)&myop; 1389}
1041 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1390
1042 SPAGAIN; 1391/* the tail of transfer: execute stuff we can only do after a transfer */
1392ECB_INLINE void
1393transfer_tail (pTHX)
1394{
1395 free_coro_mortal (aTHX);
1043} 1396}
1044 1397
1045/* 1398/*
1046 * this is a _very_ stripped down perl interpreter ;) 1399 * this is a _very_ stripped down perl interpreter ;)
1047 */ 1400 */
1048static void 1401static void
1049cctx_run (void *arg) 1402cctx_run (void *arg)
1050{ 1403{
1404#ifdef USE_ITHREADS
1405# if CORO_PTHREAD
1406 PERL_SET_CONTEXT (coro_thx);
1407# endif
1408#endif
1409 {
1051 dTHX; 1410 dTHX;
1052 1411
1053 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1412 /* normally we would need to skip the entersub here */
1054 UNLOCK; 1413 /* not doing so will re-execute it, which is exactly what we want */
1055
1056 /* we now skip the entersub that lead to transfer() */
1057 PL_op = PL_op->op_next; 1414 /* PL_nop = PL_nop->op_next */
1058 1415
1059 /* inject a fake subroutine call to cctx_init */ 1416 /* inject a fake subroutine call to cctx_init */
1060 cctx_prepare (aTHX_ (coro_cctx *)arg); 1417 cctx_prepare (aTHX);
1061 1418
1419 /* cctx_run is the alternative tail of transfer() */
1420 transfer_tail (aTHX);
1421
1062 /* somebody or something will hit me for both perl_run and PL_restartop */ 1422 /* somebody or something will hit me for both perl_run and PL_restartop */
1063 PL_restartop = PL_op; 1423 PL_restartop = PL_op;
1064 perl_run (PL_curinterp); 1424 perl_run (PL_curinterp);
1065
1066 /* 1425 /*
1426 * Unfortunately, there is no way to get at the return values of the
1427 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1428 * runtime errors here, as this is just a random interpreter, not a thread.
1429 */
1430
1431 /*
1067 * If perl-run returns we assume exit() was being called or the coro 1432 * If perl-run returns we assume exit() was being called or the coro
1068 * fell off the end, which seems to be the only valid (non-bug) 1433 * fell off the end, which seems to be the only valid (non-bug)
1069 * reason for perl_run to return. We try to exit by jumping to the 1434 * reason for perl_run to return. We try to exit by jumping to the
1070 * bootstrap-time "top" top_env, as we cannot restore the "main" 1435 * bootstrap-time "top" top_env, as we cannot restore the "main"
1071 * coroutine as Coro has no such concept 1436 * coroutine as Coro has no such concept.
1437 * This actually isn't valid with the pthread backend, but OSes requiring
1438 * that backend are too broken to do it in a standards-compliant way.
1072 */ 1439 */
1073 PL_top_env = main_top_env; 1440 PL_top_env = main_top_env;
1074 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1441 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1442 }
1075} 1443}
1076 1444
1077static coro_cctx * 1445static coro_cctx *
1078cctx_new () 1446cctx_new ()
1079{ 1447{
1080 coro_cctx *cctx; 1448 coro_cctx *cctx;
1449
1450 ++cctx_count;
1451 New (0, cctx, 1, coro_cctx);
1452
1453 cctx->gen = cctx_gen;
1454 cctx->flags = 0;
1455 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1456
1457 return cctx;
1458}
1459
1460/* create a new cctx only suitable as source */
1461static coro_cctx *
1462cctx_new_empty ()
1463{
1464 coro_cctx *cctx = cctx_new ();
1465
1466 cctx->sptr = 0;
1467 coro_create (&cctx->cctx, 0, 0, 0, 0);
1468
1469 return cctx;
1470}
1471
1472/* create a new cctx suitable as destination/running a perl interpreter */
1473static coro_cctx *
1474cctx_new_run ()
1475{
1476 coro_cctx *cctx = cctx_new ();
1081 void *stack_start; 1477 void *stack_start;
1082 size_t stack_size; 1478 size_t stack_size;
1083 1479
1084 ++cctx_count;
1085
1086 Newz (0, cctx, 1, coro_cctx);
1087
1088#if HAVE_MMAP 1480#if HAVE_MMAP
1089 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1481 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1090 /* mmap supposedly does allocate-on-write for us */ 1482 /* mmap supposedly does allocate-on-write for us */
1091 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1483 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1092 1484
1093 if (cctx->sptr != (void *)-1) 1485 if (cctx->sptr != (void *)-1)
1094 { 1486 {
1095# if CORO_STACKGUARD 1487 #if CORO_STACKGUARD
1096 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1488 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1097# endif 1489 #endif
1098 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1490 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1099 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1491 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1100 cctx->flags |= CC_MAPPED; 1492 cctx->flags |= CC_MAPPED;
1101 } 1493 }
1102 else 1494 else
1103#endif 1495#endif
1104 { 1496 {
1105 cctx->ssize = coro_stacksize * (long)sizeof (long); 1497 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1106 New (0, cctx->sptr, coro_stacksize, long); 1498 New (0, cctx->sptr, cctx_stacksize, long);
1107 1499
1108 if (!cctx->sptr) 1500 if (!cctx->sptr)
1109 { 1501 {
1110 perror ("FATAL: unable to allocate stack for coroutine"); 1502 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1111 _exit (EXIT_FAILURE); 1503 _exit (EXIT_FAILURE);
1112 } 1504 }
1113 1505
1114 stack_start = cctx->sptr; 1506 stack_start = cctx->sptr;
1115 stack_size = cctx->ssize; 1507 stack_size = cctx->ssize;
1116 } 1508 }
1117 1509
1118 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1510 #if CORO_USE_VALGRIND
1511 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1512 #endif
1513
1119 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1514 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1120 1515
1121 return cctx; 1516 return cctx;
1122} 1517}
1123 1518
… …
1125cctx_destroy (coro_cctx *cctx) 1520cctx_destroy (coro_cctx *cctx)
1126{ 1521{
1127 if (!cctx) 1522 if (!cctx)
1128 return; 1523 return;
1129 1524
1525 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1526
1130 --cctx_count; 1527 --cctx_count;
1528 coro_destroy (&cctx->cctx);
1131 1529
1530 /* coro_transfer creates new, empty cctx's */
1531 if (cctx->sptr)
1532 {
1132#if CORO_USE_VALGRIND 1533 #if CORO_USE_VALGRIND
1133 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1534 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1535 #endif
1536
1537#if HAVE_MMAP
1538 if (cctx->flags & CC_MAPPED)
1539 munmap (cctx->sptr, cctx->ssize);
1540 else
1134#endif 1541#endif
1135
1136#if HAVE_MMAP
1137 if (cctx->flags & CC_MAPPED)
1138 munmap (cctx->sptr, cctx->ssize);
1139 else
1140#endif
1141 Safefree (cctx->sptr); 1542 Safefree (cctx->sptr);
1543 }
1142 1544
1143 Safefree (cctx); 1545 Safefree (cctx);
1144} 1546}
1145 1547
1146/* wether this cctx should be destructed */ 1548/* wether this cctx should be destructed */
1147#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1549#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1148 1550
1149static coro_cctx * 1551static coro_cctx *
1150cctx_get (pTHX) 1552cctx_get (pTHX)
1151{ 1553{
1152 while (expect_true (cctx_first)) 1554 while (ecb_expect_true (cctx_first))
1153 { 1555 {
1154 coro_cctx *cctx = cctx_first; 1556 coro_cctx *cctx = cctx_first;
1155 cctx_first = cctx->next; 1557 cctx_first = cctx->next;
1156 --cctx_idle; 1558 --cctx_idle;
1157 1559
1158 if (expect_true (!CCTX_EXPIRED (cctx))) 1560 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1159 return cctx; 1561 return cctx;
1160 1562
1161 cctx_destroy (cctx); 1563 cctx_destroy (cctx);
1162 } 1564 }
1163 1565
1164 return cctx_new (); 1566 return cctx_new_run ();
1165} 1567}
1166 1568
1167static void 1569static void
1168cctx_put (coro_cctx *cctx) 1570cctx_put (coro_cctx *cctx)
1169{ 1571{
1572 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1573
1170 /* free another cctx if overlimit */ 1574 /* free another cctx if overlimit */
1171 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1575 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1172 { 1576 {
1173 coro_cctx *first = cctx_first; 1577 coro_cctx *first = cctx_first;
1174 cctx_first = first->next; 1578 cctx_first = first->next;
1175 --cctx_idle; 1579 --cctx_idle;
1176 1580
… …
1185/** coroutine switching *****************************************************/ 1589/** coroutine switching *****************************************************/
1186 1590
1187static void 1591static void
1188transfer_check (pTHX_ struct coro *prev, struct coro *next) 1592transfer_check (pTHX_ struct coro *prev, struct coro *next)
1189{ 1593{
1594 /* TODO: throwing up here is considered harmful */
1595
1190 if (expect_true (prev != next)) 1596 if (ecb_expect_true (prev != next))
1191 { 1597 {
1192 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1598 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1193 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1599 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1194 1600
1195 if (expect_false (next->flags & CF_RUNNING)) 1601 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1196 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1197
1198 if (expect_false (next->flags & CF_DESTROYED))
1199 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1602 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1200 1603
1201#if !PERL_VERSION_ATLEAST (5,10,0) 1604#if !PERL_VERSION_ATLEAST (5,10,0)
1202 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1605 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1203 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1606 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1204#endif 1607#endif
1205 } 1608 }
1206} 1609}
1207 1610
1208/* always use the TRANSFER macro */ 1611/* always use the TRANSFER macro */
1209static void NOINLINE 1612static void ecb_noinline /* noinline so we have a fixed stackframe */
1210transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1613transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1211{ 1614{
1212 dSTACKLEVEL; 1615 dSTACKLEVEL;
1213 1616
1214 /* sometimes transfer is only called to set idle_sp */ 1617 /* sometimes transfer is only called to set idle_sp */
1215 if (expect_false (!next)) 1618 if (ecb_expect_false (!prev))
1216 { 1619 {
1217 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1620 cctx_current->idle_sp = STACKLEVEL;
1218 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1621 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1219 } 1622 }
1220 else if (expect_true (prev != next)) 1623 else if (ecb_expect_true (prev != next))
1221 { 1624 {
1222 static volatile int has_throw;
1223 coro_cctx *prev__cctx; 1625 coro_cctx *cctx_prev;
1224 1626
1225 if (expect_false (prev->flags & CF_NEW)) 1627 if (ecb_expect_false (prev->flags & CF_NEW))
1226 { 1628 {
1227 /* create a new empty context */ 1629 /* create a new empty/source context */
1228 Newz (0, prev->cctx, 1, coro_cctx);
1229 prev->flags &= ~CF_NEW; 1630 prev->flags &= ~CF_NEW;
1230 prev->flags |= CF_RUNNING; 1631 prev->flags |= CF_RUNNING;
1231 } 1632 }
1232 1633
1233 prev->flags &= ~CF_RUNNING; 1634 prev->flags &= ~CF_RUNNING;
1234 next->flags |= CF_RUNNING; 1635 next->flags |= CF_RUNNING;
1235 1636
1236 LOCK;
1237
1238 /* first get rid of the old state */ 1637 /* first get rid of the old state */
1239 save_perl (aTHX_ prev); 1638 save_perl (aTHX_ prev);
1240 1639
1241 if (expect_false (next->flags & CF_NEW)) 1640 if (ecb_expect_false (next->flags & CF_NEW))
1242 { 1641 {
1243 /* need to start coroutine */ 1642 /* need to start coroutine */
1244 next->flags &= ~CF_NEW; 1643 next->flags &= ~CF_NEW;
1245 /* setup coroutine call */ 1644 /* setup coroutine call */
1246 coro_setup (aTHX_ next); 1645 init_perl (aTHX_ next);
1247 } 1646 }
1248 else 1647 else
1249 load_perl (aTHX_ next); 1648 load_perl (aTHX_ next);
1250 1649
1251 prev__cctx = prev->cctx;
1252
1253 /* possibly "free" the cctx */ 1650 /* possibly untie and reuse the cctx */
1254 if (expect_true ( 1651 if (ecb_expect_true (
1255 prev__cctx->idle_sp == STACKLEVEL 1652 cctx_current->idle_sp == STACKLEVEL
1256 && !(prev__cctx->flags & CC_TRACE) 1653 && !(cctx_current->flags & CC_TRACE)
1257 && !force_cctx 1654 && !force_cctx
1258 )) 1655 ))
1259 { 1656 {
1260 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1657 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1261 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1658 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1262 1659
1263 prev->cctx = 0;
1264
1265 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1660 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1266 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1661 /* without this the next cctx_get might destroy the running cctx while still in use */
1267 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1662 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1268 if (!next->cctx) 1663 if (ecb_expect_true (!next->cctx))
1269 next->cctx = cctx_get (aTHX); 1664 next->cctx = cctx_get (aTHX);
1270 1665
1271 cctx_put (prev__cctx); 1666 cctx_put (cctx_current);
1272 } 1667 }
1668 else
1669 prev->cctx = cctx_current;
1273 1670
1274 ++next->usecount; 1671 ++next->usecount;
1275 1672
1276 if (expect_true (!next->cctx)) 1673 cctx_prev = cctx_current;
1277 next->cctx = cctx_get (aTHX); 1674 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1278 1675
1279 has_throw = !!next->throw; 1676 next->cctx = 0;
1280 1677
1281 if (expect_false (prev__cctx != next->cctx)) 1678 if (ecb_expect_false (cctx_prev != cctx_current))
1282 { 1679 {
1283 prev__cctx->top_env = PL_top_env; 1680 cctx_prev->top_env = PL_top_env;
1284 PL_top_env = next->cctx->top_env; 1681 PL_top_env = cctx_current->top_env;
1285 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1682 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1286 } 1683 }
1287 1684
1288 free_coro_mortal (aTHX); 1685 transfer_tail (aTHX);
1289 UNLOCK;
1290
1291 if (expect_false (has_throw))
1292 {
1293 struct coro *coro = SvSTATE (coro_current);
1294
1295 if (coro->throw)
1296 {
1297 SV *exception = coro->throw;
1298 coro->throw = 0;
1299 sv_setsv (ERRSV, exception);
1300 croak (0);
1301 }
1302 }
1303 } 1686 }
1304} 1687}
1305
1306struct transfer_args
1307{
1308 struct coro *prev, *next;
1309};
1310 1688
1311#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1689#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1312#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1690#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1313 1691
1314/** high level stuff ********************************************************/ 1692/** high level stuff ********************************************************/
1315 1693
1694/* this function is actually Coro, not Coro::State, but we call it from here */
1695/* because it is convenient - but it hasn't been declared yet for that reason */
1316static int 1696static void
1697coro_call_on_destroy (pTHX_ struct coro *coro);
1698
1699static void
1317coro_state_destroy (pTHX_ struct coro *coro) 1700coro_state_destroy (pTHX_ struct coro *coro)
1318{ 1701{
1319 if (coro->flags & CF_DESTROYED) 1702 if (coro->flags & CF_ZOMBIE)
1320 return 0; 1703 return;
1321 1704
1705 slf_destroy (aTHX_ coro);
1706
1322 coro->flags |= CF_DESTROYED; 1707 coro->flags |= CF_ZOMBIE;
1323 1708
1324 if (coro->flags & CF_READY) 1709 if (coro->flags & CF_READY)
1325 { 1710 {
1326 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1711 /* reduce nready, as destroying a ready coro effectively unreadies it */
1327 /* alternative: look through all ready queues and remove the coro */ 1712 /* alternative: look through all ready queues and remove the coro */
1328 LOCK;
1329 --coro_nready; 1713 --coro_nready;
1330 UNLOCK;
1331 } 1714 }
1332 else 1715 else
1333 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1716 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1334
1335 if (coro->mainstack && coro->mainstack != main_mainstack)
1336 {
1337 struct coro temp;
1338
1339 if (coro->flags & CF_RUNNING)
1340 croak ("FATAL: tried to destroy currently running coroutine");
1341
1342 save_perl (aTHX_ &temp);
1343 load_perl (aTHX_ coro);
1344
1345 coro_destroy (aTHX_ coro);
1346
1347 load_perl (aTHX_ &temp);
1348
1349 coro->slot = 0;
1350 }
1351
1352 cctx_destroy (coro->cctx);
1353 SvREFCNT_dec (coro->args);
1354 1717
1355 if (coro->next) coro->next->prev = coro->prev; 1718 if (coro->next) coro->next->prev = coro->prev;
1356 if (coro->prev) coro->prev->next = coro->next; 1719 if (coro->prev) coro->prev->next = coro->next;
1357 if (coro == coro_first) coro_first = coro->next; 1720 if (coro == coro_first) coro_first = coro->next;
1358 1721
1359 return 1; 1722 if (coro->mainstack
1723 && coro->mainstack != main_mainstack
1724 && coro->slot
1725 && !PL_dirty)
1726 destroy_perl (aTHX_ coro);
1727
1728 cctx_destroy (coro->cctx);
1729 SvREFCNT_dec (coro->startcv);
1730 SvREFCNT_dec (coro->args);
1731 SvREFCNT_dec (coro->swap_sv);
1732 SvREFCNT_dec (CORO_THROW);
1733
1734 coro_call_on_destroy (aTHX_ coro);
1735
1736 /* more destruction mayhem in coro_state_free */
1360} 1737}
1361 1738
1362static int 1739static int
1363coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1740coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1364{ 1741{
1365 struct coro *coro = (struct coro *)mg->mg_ptr; 1742 struct coro *coro = (struct coro *)mg->mg_ptr;
1366 mg->mg_ptr = 0; 1743 mg->mg_ptr = 0;
1367 1744
1368 coro->hv = 0;
1369
1370 if (--coro->refcnt < 0)
1371 {
1372 coro_state_destroy (aTHX_ coro); 1745 coro_state_destroy (aTHX_ coro);
1746 SvREFCNT_dec (coro->on_destroy);
1747 SvREFCNT_dec (coro->status);
1748
1373 Safefree (coro); 1749 Safefree (coro);
1374 }
1375 1750
1376 return 0; 1751 return 0;
1377} 1752}
1378 1753
1379static int 1754static int ecb_cold
1380coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1755coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1381{ 1756{
1382 struct coro *coro = (struct coro *)mg->mg_ptr; 1757 /* called when perl clones the current process the slow way (windows process emulation) */
1383 1758 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1384 ++coro->refcnt; 1759 mg->mg_ptr = 0;
1760 mg->mg_virtual = 0;
1385 1761
1386 return 0; 1762 return 0;
1387} 1763}
1388 1764
1389static MGVTBL coro_state_vtbl = { 1765static MGVTBL coro_state_vtbl = {
… …
1396# define MGf_DUP 0 1772# define MGf_DUP 0
1397#endif 1773#endif
1398}; 1774};
1399 1775
1400static void 1776static void
1401prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1777prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1402{ 1778{
1403 ta->prev = SvSTATE (prev_sv); 1779 ta->prev = SvSTATE (prev_sv);
1404 ta->next = SvSTATE (next_sv); 1780 ta->next = SvSTATE (next_sv);
1405 TRANSFER_CHECK (*ta); 1781 TRANSFER_CHECK (*ta);
1406} 1782}
1407 1783
1408static void 1784static void
1409api_transfer (SV *prev_sv, SV *next_sv) 1785api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1410{ 1786{
1411 dTHX;
1412 struct transfer_args ta; 1787 struct coro_transfer_args ta;
1413 1788
1414 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1789 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1415 TRANSFER (ta, 1); 1790 TRANSFER (ta, 1);
1416} 1791}
1417 1792
1418/** Coro ********************************************************************/ 1793/** Coro ********************************************************************/
1419 1794
1420static void 1795ECB_INLINE void
1421coro_enq (pTHX_ SV *coro_sv) 1796coro_enq (pTHX_ struct coro *coro)
1422{ 1797{
1423 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1798 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1424}
1425 1799
1426static SV * 1800 SvREFCNT_inc_NN (coro->hv);
1801
1802 coro->next_ready = 0;
1803 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1804 ready [1] = coro;
1805}
1806
1807ECB_INLINE struct coro *
1427coro_deq (pTHX) 1808coro_deq (pTHX)
1428{ 1809{
1429 int prio; 1810 int prio;
1430 1811
1431 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1812 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1432 if (AvFILLp (coro_ready [prio]) >= 0) 1813 {
1433 return av_shift (coro_ready [prio]); 1814 struct coro **ready = coro_ready [prio];
1815
1816 if (ready [0])
1817 {
1818 struct coro *coro = ready [0];
1819 ready [0] = coro->next_ready;
1820 return coro;
1821 }
1822 }
1434 1823
1435 return 0; 1824 return 0;
1436} 1825}
1437 1826
1827static void
1828invoke_sv_ready_hook_helper (void)
1829{
1830 dTHX;
1831 dSP;
1832
1833 ENTER;
1834 SAVETMPS;
1835
1836 PUSHMARK (SP);
1837 PUTBACK;
1838 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1839
1840 FREETMPS;
1841 LEAVE;
1842}
1843
1438static int 1844static int
1439api_ready (SV *coro_sv) 1845api_ready (pTHX_ SV *coro_sv)
1440{ 1846{
1441 dTHX;
1442 struct coro *coro;
1443 SV *sv_hook;
1444 void (*xs_hook)(void);
1445
1446 if (SvROK (coro_sv))
1447 coro_sv = SvRV (coro_sv);
1448
1449 coro = SvSTATE (coro_sv); 1847 struct coro *coro = SvSTATE (coro_sv);
1450 1848
1451 if (coro->flags & CF_READY) 1849 if (coro->flags & CF_READY)
1452 return 0; 1850 return 0;
1453 1851
1454 coro->flags |= CF_READY; 1852 coro->flags |= CF_READY;
1455 1853
1456 LOCK; 1854 coro_enq (aTHX_ coro);
1457 1855
1458 sv_hook = coro_nready ? 0 : coro_readyhook; 1856 if (!coro_nready++)
1459 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1857 if (coroapi.readyhook)
1460 1858 coroapi.readyhook ();
1461 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1462 ++coro_nready;
1463
1464 UNLOCK;
1465
1466 if (sv_hook)
1467 {
1468 dSP;
1469
1470 ENTER;
1471 SAVETMPS;
1472
1473 PUSHMARK (SP);
1474 PUTBACK;
1475 call_sv (sv_hook, G_DISCARD);
1476 SPAGAIN;
1477
1478 FREETMPS;
1479 LEAVE;
1480 }
1481
1482 if (xs_hook)
1483 xs_hook ();
1484 1859
1485 return 1; 1860 return 1;
1486} 1861}
1487 1862
1488static int 1863static int
1489api_is_ready (SV *coro_sv) 1864api_is_ready (pTHX_ SV *coro_sv)
1490{ 1865{
1491 dTHX;
1492 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1866 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1493} 1867}
1494 1868
1495static void 1869/* expects to own a reference to next->hv */
1870ECB_INLINE void
1496prepare_schedule (pTHX_ struct transfer_args *ta) 1871prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1497{ 1872{
1498 SV *prev_sv, *next_sv;
1499
1500 for (;;)
1501 {
1502 LOCK;
1503 next_sv = coro_deq (aTHX);
1504
1505 /* nothing to schedule: call the idle handler */
1506 if (expect_false (!next_sv))
1507 {
1508 dSP;
1509 UNLOCK;
1510
1511 ENTER;
1512 SAVETMPS;
1513
1514 PUSHMARK (SP);
1515 PUTBACK;
1516 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1517 SPAGAIN;
1518
1519 FREETMPS;
1520 LEAVE;
1521 continue;
1522 }
1523
1524 ta->next = SvSTATE (next_sv);
1525
1526 /* cannot transfer to destroyed coros, skip and look for next */
1527 if (expect_false (ta->next->flags & CF_DESTROYED))
1528 {
1529 UNLOCK;
1530 SvREFCNT_dec (next_sv);
1531 /* coro_nready is already taken care of by destroy */
1532 continue;
1533 }
1534
1535 --coro_nready;
1536 UNLOCK;
1537 break;
1538 }
1539
1540 /* free this only after the transfer */
1541 prev_sv = SvRV (coro_current); 1873 SV *prev_sv = SvRV (coro_current);
1874
1542 ta->prev = SvSTATE (prev_sv); 1875 ta->prev = SvSTATE_hv (prev_sv);
1876 ta->next = next;
1877
1543 TRANSFER_CHECK (*ta); 1878 TRANSFER_CHECK (*ta);
1544 assert (ta->next->flags & CF_READY); 1879
1545 ta->next->flags &= ~CF_READY;
1546 SvRV_set (coro_current, next_sv); 1880 SvRV_set (coro_current, (SV *)next->hv);
1547 1881
1548 LOCK;
1549 free_coro_mortal (aTHX); 1882 free_coro_mortal (aTHX);
1550 coro_mortal = prev_sv; 1883 coro_mortal = prev_sv;
1551 UNLOCK;
1552} 1884}
1553 1885
1554static void 1886static void
1887prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1888{
1889 for (;;)
1890 {
1891 struct coro *next = coro_deq (aTHX);
1892
1893 if (ecb_expect_true (next))
1894 {
1895 /* cannot transfer to destroyed coros, skip and look for next */
1896 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1897 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1898 else
1899 {
1900 next->flags &= ~CF_READY;
1901 --coro_nready;
1902
1903 prepare_schedule_to (aTHX_ ta, next);
1904 break;
1905 }
1906 }
1907 else
1908 {
1909 /* nothing to schedule: call the idle handler */
1910 if (SvROK (sv_idle)
1911 && SvOBJECT (SvRV (sv_idle)))
1912 {
1913 if (SvRV (sv_idle) == SvRV (coro_current))
1914 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1915
1916 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1917 api_ready (aTHX_ SvRV (sv_idle));
1918 --coro_nready;
1919 }
1920 else
1921 {
1922 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1923 dSP;
1924
1925 ENTER;
1926 SAVETMPS;
1927
1928 PUSHMARK (SP);
1929 PUTBACK;
1930 call_sv (sv_idle, G_VOID | G_DISCARD);
1931
1932 FREETMPS;
1933 LEAVE;
1934 }
1935 }
1936 }
1937}
1938
1939ECB_INLINE void
1555prepare_cede (pTHX_ struct transfer_args *ta) 1940prepare_cede (pTHX_ struct coro_transfer_args *ta)
1556{ 1941{
1557 api_ready (coro_current); 1942 api_ready (aTHX_ coro_current);
1558 prepare_schedule (aTHX_ ta); 1943 prepare_schedule (aTHX_ ta);
1559} 1944}
1560 1945
1946ECB_INLINE void
1947prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1948{
1949 SV *prev = SvRV (coro_current);
1950
1951 if (coro_nready)
1952 {
1953 prepare_schedule (aTHX_ ta);
1954 api_ready (aTHX_ prev);
1955 }
1956 else
1957 prepare_nop (aTHX_ ta);
1958}
1959
1960static void
1961api_schedule (pTHX)
1962{
1963 struct coro_transfer_args ta;
1964
1965 prepare_schedule (aTHX_ &ta);
1966 TRANSFER (ta, 1);
1967}
1968
1969static void
1970api_schedule_to (pTHX_ SV *coro_sv)
1971{
1972 struct coro_transfer_args ta;
1973 struct coro *next = SvSTATE (coro_sv);
1974
1975 SvREFCNT_inc_NN (coro_sv);
1976 prepare_schedule_to (aTHX_ &ta, next);
1977}
1978
1561static int 1979static int
1562prepare_cede_notself (pTHX_ struct transfer_args *ta) 1980api_cede (pTHX)
1563{ 1981{
1564 if (coro_nready) 1982 struct coro_transfer_args ta;
1565 { 1983
1566 SV *prev = SvRV (coro_current);
1567 prepare_schedule (aTHX_ ta); 1984 prepare_cede (aTHX_ &ta);
1568 api_ready (prev); 1985
1986 if (ecb_expect_true (ta.prev != ta.next))
1987 {
1988 TRANSFER (ta, 1);
1569 return 1; 1989 return 1;
1570 } 1990 }
1571 else 1991 else
1572 return 0; 1992 return 0;
1573} 1993}
1574 1994
1575static void
1576api_schedule (void)
1577{
1578 dTHX;
1579 struct transfer_args ta;
1580
1581 prepare_schedule (aTHX_ &ta);
1582 TRANSFER (ta, 1);
1583}
1584
1585static int 1995static int
1586api_cede (void) 1996api_cede_notself (pTHX)
1587{ 1997{
1588 dTHX; 1998 if (coro_nready)
1999 {
1589 struct transfer_args ta; 2000 struct coro_transfer_args ta;
1590 2001
1591 prepare_cede (aTHX_ &ta); 2002 prepare_cede_notself (aTHX_ &ta);
1592
1593 if (expect_true (ta.prev != ta.next))
1594 {
1595 TRANSFER (ta, 1); 2003 TRANSFER (ta, 1);
1596 return 1; 2004 return 1;
1597 } 2005 }
1598 else 2006 else
1599 return 0; 2007 return 0;
1600} 2008}
1601 2009
1602static int 2010static void
1603api_cede_notself (void)
1604{
1605 dTHX;
1606 struct transfer_args ta;
1607
1608 if (prepare_cede_notself (aTHX_ &ta))
1609 {
1610 TRANSFER (ta, 1);
1611 return 1;
1612 }
1613 else
1614 return 0;
1615}
1616
1617static void
1618api_trace (SV *coro_sv, int flags) 2011api_trace (pTHX_ SV *coro_sv, int flags)
1619{ 2012{
1620 dTHX;
1621 struct coro *coro = SvSTATE (coro_sv); 2013 struct coro *coro = SvSTATE (coro_sv);
1622 2014
2015 if (coro->flags & CF_RUNNING)
2016 croak ("cannot enable tracing on a running coroutine, caught");
2017
1623 if (flags & CC_TRACE) 2018 if (flags & CC_TRACE)
1624 { 2019 {
1625 if (!coro->cctx) 2020 if (!coro->cctx)
1626 coro->cctx = cctx_new (); 2021 coro->cctx = cctx_new_run ();
1627 else if (!(coro->cctx->flags & CC_TRACE)) 2022 else if (!(coro->cctx->flags & CC_TRACE))
1628 croak ("cannot enable tracing on coroutine with custom stack"); 2023 croak ("cannot enable tracing on coroutine with custom stack, caught");
1629 2024
1630 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2025 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1631 } 2026 }
1632 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2027 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1633 { 2028 {
… …
1638 else 2033 else
1639 coro->slot->runops = RUNOPS_DEFAULT; 2034 coro->slot->runops = RUNOPS_DEFAULT;
1640 } 2035 }
1641} 2036}
1642 2037
2038static void
2039coro_push_av (pTHX_ AV *av, I32 gimme_v)
2040{
2041 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2042 {
2043 dSP;
2044
2045 if (gimme_v == G_SCALAR)
2046 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2047 else
2048 {
2049 int i;
2050 EXTEND (SP, AvFILLp (av) + 1);
2051
2052 for (i = 0; i <= AvFILLp (av); ++i)
2053 PUSHs (AvARRAY (av)[i]);
2054 }
2055
2056 PUTBACK;
2057 }
2058}
2059
2060static void
2061coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2062{
2063 if (!coro->on_destroy)
2064 coro->on_destroy = newAV ();
2065
2066 av_push (coro->on_destroy, cb);
2067}
2068
2069static void
2070slf_destroy_join (pTHX_ struct CoroSLF *frame)
2071{
2072 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2073}
2074
1643static int 2075static int
1644coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2076slf_check_join (pTHX_ struct CoroSLF *frame)
1645{ 2077{
1646 AV *padlist; 2078 struct coro *coro = (struct coro *)frame->data;
1647 AV *av = (AV *)mg->mg_obj;
1648 2079
1649 abort (); 2080 if (!coro->status)
2081 return 1;
2082
2083 frame->destroy = 0;
2084
2085 coro_push_av (aTHX_ coro->status, GIMME_V);
2086
2087 SvREFCNT_dec ((SV *)coro->hv);
1650 2088
1651 return 0; 2089 return 0;
1652} 2090}
1653 2091
1654static MGVTBL coro_gensub_vtbl = { 2092static void
1655 0, 0, 0, 0, 2093slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1656 coro_gensub_free 2094{
1657}; 2095 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2096
2097 if (items > 1)
2098 croak ("join called with too many arguments");
2099
2100 if (coro->status)
2101 frame->prepare = prepare_nop;
2102 else
2103 {
2104 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2105 frame->prepare = prepare_schedule;
2106 }
2107
2108 frame->check = slf_check_join;
2109 frame->destroy = slf_destroy_join;
2110 frame->data = (void *)coro;
2111 SvREFCNT_inc (coro->hv);
2112}
2113
2114static void
2115coro_call_on_destroy (pTHX_ struct coro *coro)
2116{
2117 AV *od = coro->on_destroy;
2118
2119 if (!od)
2120 return;
2121
2122 while (AvFILLp (od) >= 0)
2123 {
2124 SV *cb = sv_2mortal (av_pop (od));
2125
2126 /* coro hv's (and only hv's at the moment) are supported as well */
2127 if (SvSTATEhv_p (aTHX_ cb))
2128 api_ready (aTHX_ cb);
2129 else
2130 {
2131 dSP; /* don't disturb outer sp */
2132 PUSHMARK (SP);
2133
2134 if (coro->status)
2135 {
2136 PUTBACK;
2137 coro_push_av (aTHX_ coro->status, G_ARRAY);
2138 SPAGAIN;
2139 }
2140
2141 PUTBACK;
2142 call_sv (cb, G_VOID | G_DISCARD);
2143 }
2144 }
2145}
2146
2147static void
2148coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2149{
2150 AV *av;
2151
2152 if (coro->status)
2153 {
2154 av = coro->status;
2155 av_clear (av);
2156 }
2157 else
2158 av = coro->status = newAV ();
2159
2160 /* items are actually not so common, so optimise for this case */
2161 if (items)
2162 {
2163 int i;
2164
2165 av_extend (av, items - 1);
2166
2167 for (i = 0; i < items; ++i)
2168 av_push (av, SvREFCNT_inc_NN (arg [i]));
2169 }
2170}
2171
2172static void
2173slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2174{
2175 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2176 api_ready (aTHX_ sv_manager);
2177
2178 frame->prepare = prepare_schedule;
2179 frame->check = slf_check_repeat;
2180
2181 /* as a minor optimisation, we could unwind all stacks here */
2182 /* but that puts extra pressure on pp_slf, and is not worth much */
2183 /*coro_unwind_stacks (aTHX);*/
2184}
2185
2186static void
2187slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2188{
2189 HV *coro_hv = (HV *)SvRV (coro_current);
2190
2191 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2192 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2193}
2194
2195static void
2196slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2197{
2198 HV *coro_hv;
2199 struct coro *coro;
2200
2201 if (items <= 0)
2202 croak ("Coro::cancel called without coro object,");
2203
2204 coro = SvSTATE (arg [0]);
2205 coro_hv = coro->hv;
2206
2207 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2208
2209 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2210 {
2211 /* coro currently busy cancelling something, so just notify it */
2212 coro->slf_frame.data = (void *)coro;
2213
2214 frame->prepare = prepare_nop;
2215 frame->check = slf_check_nop;
2216 }
2217 else if (coro_hv == (HV *)SvRV (coro_current))
2218 {
2219 /* cancelling the current coro is allowed, and equals terminate */
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221 }
2222 else
2223 {
2224 struct coro *self = SvSTATE_current;
2225
2226 /* otherwise we cancel directly, purely for speed reasons
2227 * unfortunately, this requires some magic trickery, as
2228 * somebody else could cancel us, so we have to fight the cancellation.
2229 * this is ugly, and hopefully fully worth the extra speed.
2230 * besides, I can't get the slow-but-safe version working...
2231 */
2232 slf_frame.data = 0;
2233 self->flags |= CF_NOCANCEL;
2234 coro_state_destroy (aTHX_ coro);
2235 self->flags &= ~CF_NOCANCEL;
2236
2237 if (slf_frame.data)
2238 {
2239 /* while we were busy we have been cancelled, so terminate */
2240 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2241 }
2242 else
2243 {
2244 frame->prepare = prepare_nop;
2245 frame->check = slf_check_nop;
2246 }
2247 }
2248}
2249
2250static int
2251slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2252{
2253 frame->prepare = 0;
2254 coro_unwind_stacks (aTHX);
2255
2256 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2257
2258 return 1;
2259}
2260
2261static int
2262safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2263{
2264 if (coro->cctx)
2265 croak ("coro inside C callback, unable to cancel at this time, caught");
2266
2267 if (coro->flags & CF_NEW)
2268 {
2269 coro_set_status (aTHX_ coro, arg, items);
2270 coro_state_destroy (aTHX_ coro);
2271 }
2272 else
2273 {
2274 if (!coro->slf_frame.prepare)
2275 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2276
2277 slf_destroy (aTHX_ coro);
2278
2279 coro_set_status (aTHX_ coro, arg, items);
2280 coro->slf_frame.prepare = prepare_nop;
2281 coro->slf_frame.check = slf_check_safe_cancel;
2282
2283 api_ready (aTHX_ (SV *)coro->hv);
2284 }
2285
2286 return 1;
2287}
2288
2289/*****************************************************************************/
2290/* async pool handler */
2291
2292static int
2293slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2294{
2295 HV *hv = (HV *)SvRV (coro_current);
2296 struct coro *coro = (struct coro *)frame->data;
2297
2298 if (!coro->invoke_cb)
2299 return 1; /* loop till we have invoke */
2300 else
2301 {
2302 hv_store (hv, "desc", sizeof ("desc") - 1,
2303 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2304
2305 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2306
2307 {
2308 dSP;
2309 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2310 PUTBACK;
2311 }
2312
2313 SvREFCNT_dec (GvAV (PL_defgv));
2314 GvAV (PL_defgv) = coro->invoke_av;
2315 coro->invoke_av = 0;
2316
2317 return 0;
2318 }
2319}
2320
2321static void
2322slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *hv = (HV *)SvRV (coro_current);
2325 struct coro *coro = SvSTATE_hv ((SV *)hv);
2326
2327 if (ecb_expect_true (coro->saved_deffh))
2328 {
2329 /* subsequent iteration */
2330 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2331 coro->saved_deffh = 0;
2332
2333 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2334 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2335 {
2336 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2337 return;
2338 }
2339 else
2340 {
2341 av_clear (GvAV (PL_defgv));
2342 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2343
2344 coro->prio = 0;
2345
2346 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2347 api_trace (aTHX_ coro_current, 0);
2348
2349 frame->prepare = prepare_schedule;
2350 av_push (av_async_pool, SvREFCNT_inc (hv));
2351 }
2352 }
2353 else
2354 {
2355 /* first iteration, simply fall through */
2356 frame->prepare = prepare_nop;
2357 }
2358
2359 frame->check = slf_check_pool_handler;
2360 frame->data = (void *)coro;
2361}
2362
2363/*****************************************************************************/
2364/* rouse callback */
2365
2366#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2367
2368static void
2369coro_rouse_callback (pTHX_ CV *cv)
2370{
2371 dXSARGS;
2372 SV *data = (SV *)S_GENSUB_ARG;
2373
2374 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2375 {
2376 /* first call, set args */
2377 SV *coro = SvRV (data);
2378 AV *av = newAV ();
2379
2380 SvRV_set (data, (SV *)av);
2381
2382 /* better take a full copy of the arguments */
2383 while (items--)
2384 av_store (av, items, newSVsv (ST (items)));
2385
2386 api_ready (aTHX_ coro);
2387 SvREFCNT_dec (coro);
2388 }
2389
2390 XSRETURN_EMPTY;
2391}
2392
2393static int
2394slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2395{
2396 SV *data = (SV *)frame->data;
2397
2398 if (CORO_THROW)
2399 return 0;
2400
2401 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2402 return 1;
2403
2404 /* now push all results on the stack */
2405 {
2406 dSP;
2407 AV *av = (AV *)SvRV (data);
2408 int i;
2409
2410 EXTEND (SP, AvFILLp (av) + 1);
2411 for (i = 0; i <= AvFILLp (av); ++i)
2412 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2413
2414 /* we have stolen the elements, so set length to zero and free */
2415 AvFILLp (av) = -1;
2416 av_undef (av);
2417
2418 PUTBACK;
2419 }
2420
2421 return 0;
2422}
2423
2424static void
2425slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2426{
2427 SV *cb;
2428
2429 if (items)
2430 cb = arg [0];
2431 else
2432 {
2433 struct coro *coro = SvSTATE_current;
2434
2435 if (!coro->rouse_cb)
2436 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2437
2438 cb = sv_2mortal (coro->rouse_cb);
2439 coro->rouse_cb = 0;
2440 }
2441
2442 if (!SvROK (cb)
2443 || SvTYPE (SvRV (cb)) != SVt_PVCV
2444 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2445 croak ("Coro::rouse_wait called with illegal callback argument,");
2446
2447 {
2448 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2449 SV *data = (SV *)S_GENSUB_ARG;
2450
2451 frame->data = (void *)data;
2452 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2453 frame->check = slf_check_rouse_wait;
2454 }
2455}
2456
2457static SV *
2458coro_new_rouse_cb (pTHX)
2459{
2460 HV *hv = (HV *)SvRV (coro_current);
2461 struct coro *coro = SvSTATE_hv (hv);
2462 SV *data = newRV_inc ((SV *)hv);
2463 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2464
2465 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2466 SvREFCNT_dec (data); /* magicext increases the refcount */
2467
2468 SvREFCNT_dec (coro->rouse_cb);
2469 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2470
2471 return cb;
2472}
2473
2474/*****************************************************************************/
2475/* schedule-like-function opcode (SLF) */
2476
2477static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2478static const CV *slf_cv;
2479static SV **slf_argv;
2480static int slf_argc, slf_arga; /* count, allocated */
2481static I32 slf_ax; /* top of stack, for restore */
2482
2483/* this restores the stack in the case we patched the entersub, to */
2484/* recreate the stack frame as perl will on following calls */
2485/* since entersub cleared the stack */
2486static OP *
2487pp_restore (pTHX)
2488{
2489 int i;
2490 SV **SP = PL_stack_base + slf_ax;
2491
2492 PUSHMARK (SP);
2493
2494 EXTEND (SP, slf_argc + 1);
2495
2496 for (i = 0; i < slf_argc; ++i)
2497 PUSHs (sv_2mortal (slf_argv [i]));
2498
2499 PUSHs ((SV *)CvGV (slf_cv));
2500
2501 RETURNOP (slf_restore.op_first);
2502}
2503
2504static void
2505slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2506{
2507 SV **arg = (SV **)slf_frame.data;
2508
2509 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2510}
2511
2512static void
2513slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2514{
2515 if (items != 2)
2516 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2517
2518 frame->prepare = slf_prepare_transfer;
2519 frame->check = slf_check_nop;
2520 frame->data = (void *)arg; /* let's hope it will stay valid */
2521}
2522
2523static void
2524slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2525{
2526 frame->prepare = prepare_schedule;
2527 frame->check = slf_check_nop;
2528}
2529
2530static void
2531slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2532{
2533 struct coro *next = (struct coro *)slf_frame.data;
2534
2535 SvREFCNT_inc_NN (next->hv);
2536 prepare_schedule_to (aTHX_ ta, next);
2537}
2538
2539static void
2540slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2541{
2542 if (!items)
2543 croak ("Coro::schedule_to expects a coroutine argument, caught");
2544
2545 frame->data = (void *)SvSTATE (arg [0]);
2546 frame->prepare = slf_prepare_schedule_to;
2547 frame->check = slf_check_nop;
2548}
2549
2550static void
2551slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2552{
2553 api_ready (aTHX_ SvRV (coro_current));
2554
2555 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2556}
2557
2558static void
2559slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2560{
2561 frame->prepare = prepare_cede;
2562 frame->check = slf_check_nop;
2563}
2564
2565static void
2566slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2567{
2568 frame->prepare = prepare_cede_notself;
2569 frame->check = slf_check_nop;
2570}
2571
2572/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2573static void
2574slf_destroy (pTHX_ struct coro *coro)
2575{
2576 /* this callback is reserved for slf functions needing to do cleanup */
2577 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2578 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2579
2580 /*
2581 * The on_destroy above most likely is from an SLF call.
2582 * Since by definition the SLF call will not finish when we destroy
2583 * the coro, we will have to force-finish it here, otherwise
2584 * cleanup functions cannot call SLF functions.
2585 */
2586 coro->slf_frame.prepare = 0;
2587}
2588
2589/*
2590 * these not obviously related functions are all rolled into one
2591 * function to increase chances that they all will call transfer with the same
2592 * stack offset
2593 * SLF stands for "schedule-like-function".
2594 */
2595static OP *
2596pp_slf (pTHX)
2597{
2598 I32 checkmark; /* mark SP to see how many elements check has pushed */
2599
2600 /* set up the slf frame, unless it has already been set-up */
2601 /* the latter happens when a new coro has been started */
2602 /* or when a new cctx was attached to an existing coroutine */
2603 if (ecb_expect_true (!slf_frame.prepare))
2604 {
2605 /* first iteration */
2606 dSP;
2607 SV **arg = PL_stack_base + TOPMARK + 1;
2608 int items = SP - arg; /* args without function object */
2609 SV *gv = *sp;
2610
2611 /* do a quick consistency check on the "function" object, and if it isn't */
2612 /* for us, divert to the real entersub */
2613 if (SvTYPE (gv) != SVt_PVGV
2614 || !GvCV (gv)
2615 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2616 return PL_ppaddr[OP_ENTERSUB](aTHX);
2617
2618 if (!(PL_op->op_flags & OPf_STACKED))
2619 {
2620 /* ampersand-form of call, use @_ instead of stack */
2621 AV *av = GvAV (PL_defgv);
2622 arg = AvARRAY (av);
2623 items = AvFILLp (av) + 1;
2624 }
2625
2626 /* now call the init function, which needs to set up slf_frame */
2627 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2628 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2629
2630 /* pop args */
2631 SP = PL_stack_base + POPMARK;
2632
2633 PUTBACK;
2634 }
2635
2636 /* now that we have a slf_frame, interpret it! */
2637 /* we use a callback system not to make the code needlessly */
2638 /* complicated, but so we can run multiple perl coros from one cctx */
2639
2640 do
2641 {
2642 struct coro_transfer_args ta;
2643
2644 slf_frame.prepare (aTHX_ &ta);
2645 TRANSFER (ta, 0);
2646
2647 checkmark = PL_stack_sp - PL_stack_base;
2648 }
2649 while (slf_frame.check (aTHX_ &slf_frame));
2650
2651 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2652
2653 /* exception handling */
2654 if (ecb_expect_false (CORO_THROW))
2655 {
2656 SV *exception = sv_2mortal (CORO_THROW);
2657
2658 CORO_THROW = 0;
2659 sv_setsv (ERRSV, exception);
2660 croak (0);
2661 }
2662
2663 /* return value handling - mostly like entersub */
2664 /* make sure we put something on the stack in scalar context */
2665 if (GIMME_V == G_SCALAR
2666 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2667 {
2668 dSP;
2669 SV **bot = PL_stack_base + checkmark;
2670
2671 if (sp == bot) /* too few, push undef */
2672 bot [1] = &PL_sv_undef;
2673 else /* too many, take last one */
2674 bot [1] = *sp;
2675
2676 SP = bot + 1;
2677
2678 PUTBACK;
2679 }
2680
2681 return NORMAL;
2682}
2683
2684static void
2685api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2686{
2687 int i;
2688 SV **arg = PL_stack_base + ax;
2689 int items = PL_stack_sp - arg + 1;
2690
2691 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2692
2693 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2694 && PL_op->op_ppaddr != pp_slf)
2695 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2696
2697 CvFLAGS (cv) |= CVf_SLF;
2698 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2699 slf_cv = cv;
2700
2701 /* we patch the op, and then re-run the whole call */
2702 /* we have to put the same argument on the stack for this to work */
2703 /* and this will be done by pp_restore */
2704 slf_restore.op_next = (OP *)&slf_restore;
2705 slf_restore.op_type = OP_CUSTOM;
2706 slf_restore.op_ppaddr = pp_restore;
2707 slf_restore.op_first = PL_op;
2708
2709 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2710
2711 if (PL_op->op_flags & OPf_STACKED)
2712 {
2713 if (items > slf_arga)
2714 {
2715 slf_arga = items;
2716 Safefree (slf_argv);
2717 New (0, slf_argv, slf_arga, SV *);
2718 }
2719
2720 slf_argc = items;
2721
2722 for (i = 0; i < items; ++i)
2723 slf_argv [i] = SvREFCNT_inc (arg [i]);
2724 }
2725 else
2726 slf_argc = 0;
2727
2728 PL_op->op_ppaddr = pp_slf;
2729 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2730
2731 PL_op = (OP *)&slf_restore;
2732}
2733
2734/*****************************************************************************/
2735/* dynamic wind */
2736
2737static void
2738on_enterleave_call (pTHX_ SV *cb)
2739{
2740 dSP;
2741
2742 PUSHSTACK;
2743
2744 PUSHMARK (SP);
2745 PUTBACK;
2746 call_sv (cb, G_VOID | G_DISCARD);
2747 SPAGAIN;
2748
2749 POPSTACK;
2750}
2751
2752static SV *
2753coro_avp_pop_and_free (pTHX_ AV **avp)
2754{
2755 AV *av = *avp;
2756 SV *res = av_pop (av);
2757
2758 if (AvFILLp (av) < 0)
2759 {
2760 *avp = 0;
2761 SvREFCNT_dec (av);
2762 }
2763
2764 return res;
2765}
2766
2767static void
2768coro_pop_on_enter (pTHX_ void *coro)
2769{
2770 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2771 SvREFCNT_dec (cb);
2772}
2773
2774static void
2775coro_pop_on_leave (pTHX_ void *coro)
2776{
2777 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2778 on_enterleave_call (aTHX_ sv_2mortal (cb));
2779}
1658 2780
1659/*****************************************************************************/ 2781/*****************************************************************************/
1660/* PerlIO::cede */ 2782/* PerlIO::cede */
1661 2783
1662typedef struct 2784typedef struct
1663{ 2785{
1664 PerlIOBuf base; 2786 PerlIOBuf base;
1665 NV next, every; 2787 NV next, every;
1666} PerlIOCede; 2788} PerlIOCede;
1667 2789
1668static IV 2790static IV ecb_cold
1669PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2791PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1670{ 2792{
1671 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2793 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1672 2794
1673 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2795 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1674 self->next = nvtime () + self->every; 2796 self->next = nvtime () + self->every;
1675 2797
1676 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2798 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1677} 2799}
1678 2800
1679static SV * 2801static SV * ecb_cold
1680PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2802PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1681{ 2803{
1682 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2804 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1683 2805
1684 return newSVnv (self->every); 2806 return newSVnv (self->every);
… …
1690 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2812 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1691 double now = nvtime (); 2813 double now = nvtime ();
1692 2814
1693 if (now >= self->next) 2815 if (now >= self->next)
1694 { 2816 {
1695 api_cede (); 2817 api_cede (aTHX);
1696 self->next = now + self->every; 2818 self->next = now + self->every;
1697 } 2819 }
1698 2820
1699 return PerlIOBuf_flush (aTHX_ f); 2821 return PerlIOBuf_flush (aTHX_ f);
1700} 2822}
… …
1729 PerlIOBuf_get_ptr, 2851 PerlIOBuf_get_ptr,
1730 PerlIOBuf_get_cnt, 2852 PerlIOBuf_get_cnt,
1731 PerlIOBuf_set_ptrcnt, 2853 PerlIOBuf_set_ptrcnt,
1732}; 2854};
1733 2855
2856/*****************************************************************************/
2857/* Coro::Semaphore & Coro::Signal */
2858
2859static SV *
2860coro_waitarray_new (pTHX_ int count)
2861{
2862 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2863 AV *av = newAV ();
2864 SV **ary;
2865
2866 /* unfortunately, building manually saves memory */
2867 Newx (ary, 2, SV *);
2868 AvALLOC (av) = ary;
2869#if PERL_VERSION_ATLEAST (5,10,0)
2870 AvARRAY (av) = ary;
2871#else
2872 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2873 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2874 SvPVX ((SV *)av) = (char *)ary;
2875#endif
2876 AvMAX (av) = 1;
2877 AvFILLp (av) = 0;
2878 ary [0] = newSViv (count);
2879
2880 return newRV_noinc ((SV *)av);
2881}
2882
2883/* semaphore */
2884
2885static void
2886coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2887{
2888 SV *count_sv = AvARRAY (av)[0];
2889 IV count = SvIVX (count_sv);
2890
2891 count += adjust;
2892 SvIVX (count_sv) = count;
2893
2894 /* now wake up as many waiters as are expected to lock */
2895 while (count > 0 && AvFILLp (av) > 0)
2896 {
2897 SV *cb;
2898
2899 /* swap first two elements so we can shift a waiter */
2900 AvARRAY (av)[0] = AvARRAY (av)[1];
2901 AvARRAY (av)[1] = count_sv;
2902 cb = av_shift (av);
2903
2904 if (SvOBJECT (cb))
2905 {
2906 api_ready (aTHX_ cb);
2907 --count;
2908 }
2909 else if (SvTYPE (cb) == SVt_PVCV)
2910 {
2911 dSP;
2912 PUSHMARK (SP);
2913 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2914 PUTBACK;
2915 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2916 }
2917
2918 SvREFCNT_dec (cb);
2919 }
2920}
2921
2922static void
2923coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2924{
2925 /* call $sem->adjust (0) to possibly wake up some other waiters */
2926 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2927}
2928
2929static int
2930slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2931{
2932 AV *av = (AV *)frame->data;
2933 SV *count_sv = AvARRAY (av)[0];
2934 SV *coro_hv = SvRV (coro_current);
2935
2936 /* if we are about to throw, don't actually acquire the lock, just throw */
2937 if (CORO_THROW)
2938 return 0;
2939 else if (SvIVX (count_sv) > 0)
2940 {
2941 frame->destroy = 0;
2942
2943 if (acquire)
2944 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2945 else
2946 coro_semaphore_adjust (aTHX_ av, 0);
2947
2948 return 0;
2949 }
2950 else
2951 {
2952 int i;
2953 /* if we were woken up but can't down, we look through the whole */
2954 /* waiters list and only add us if we aren't in there already */
2955 /* this avoids some degenerate memory usage cases */
2956 for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2957 if (AvARRAY (av)[i] == coro_hv)
2958 return 1;
2959
2960 av_push (av, SvREFCNT_inc (coro_hv));
2961 return 1;
2962 }
2963}
2964
2965static int
2966slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2967{
2968 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2969}
2970
2971static int
2972slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2973{
2974 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2975}
2976
2977static void
2978slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2979{
2980 AV *av = (AV *)SvRV (arg [0]);
2981
2982 if (SvIVX (AvARRAY (av)[0]) > 0)
2983 {
2984 frame->data = (void *)av;
2985 frame->prepare = prepare_nop;
2986 }
2987 else
2988 {
2989 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2990
2991 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2992 frame->prepare = prepare_schedule;
2993 /* to avoid race conditions when a woken-up coro gets terminated */
2994 /* we arrange for a temporary on_destroy that calls adjust (0) */
2995 frame->destroy = coro_semaphore_destroy;
2996 }
2997}
2998
2999static void
3000slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3001{
3002 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3003 frame->check = slf_check_semaphore_down;
3004}
3005
3006static void
3007slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3008{
3009 if (items >= 2)
3010 {
3011 /* callback form */
3012 AV *av = (AV *)SvRV (arg [0]);
3013 SV *cb_cv = s_get_cv_croak (arg [1]);
3014
3015 av_push (av, SvREFCNT_inc_NN (cb_cv));
3016
3017 if (SvIVX (AvARRAY (av)[0]) > 0)
3018 coro_semaphore_adjust (aTHX_ av, 0);
3019
3020 frame->prepare = prepare_nop;
3021 frame->check = slf_check_nop;
3022 }
3023 else
3024 {
3025 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3026 frame->check = slf_check_semaphore_wait;
3027 }
3028}
3029
3030/* signal */
3031
3032static void
3033coro_signal_wake (pTHX_ AV *av, int count)
3034{
3035 SvIVX (AvARRAY (av)[0]) = 0;
3036
3037 /* now signal count waiters */
3038 while (count > 0 && AvFILLp (av) > 0)
3039 {
3040 SV *cb;
3041
3042 /* swap first two elements so we can shift a waiter */
3043 cb = AvARRAY (av)[0];
3044 AvARRAY (av)[0] = AvARRAY (av)[1];
3045 AvARRAY (av)[1] = cb;
3046
3047 cb = av_shift (av);
3048
3049 if (SvTYPE (cb) == SVt_PVCV)
3050 {
3051 dSP;
3052 PUSHMARK (SP);
3053 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3054 PUTBACK;
3055 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3056 }
3057 else
3058 {
3059 api_ready (aTHX_ cb);
3060 sv_setiv (cb, 0); /* signal waiter */
3061 }
3062
3063 SvREFCNT_dec (cb);
3064
3065 --count;
3066 }
3067}
3068
3069static int
3070slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3071{
3072 /* if we are about to throw, also stop waiting */
3073 return SvROK ((SV *)frame->data) && !CORO_THROW;
3074}
3075
3076static void
3077slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3078{
3079 AV *av = (AV *)SvRV (arg [0]);
3080
3081 if (items >= 2)
3082 {
3083 SV *cb_cv = s_get_cv_croak (arg [1]);
3084 av_push (av, SvREFCNT_inc_NN (cb_cv));
3085
3086 if (SvIVX (AvARRAY (av)[0]))
3087 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3088
3089 frame->prepare = prepare_nop;
3090 frame->check = slf_check_nop;
3091 }
3092 else if (SvIVX (AvARRAY (av)[0]))
3093 {
3094 SvIVX (AvARRAY (av)[0]) = 0;
3095 frame->prepare = prepare_nop;
3096 frame->check = slf_check_nop;
3097 }
3098 else
3099 {
3100 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3101
3102 av_push (av, waiter);
3103
3104 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3105 frame->prepare = prepare_schedule;
3106 frame->check = slf_check_signal_wait;
3107 }
3108}
3109
3110/*****************************************************************************/
3111/* Coro::AIO */
3112
3113#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3114
3115/* helper storage struct */
3116struct io_state
3117{
3118 int errorno;
3119 I32 laststype; /* U16 in 5.10.0 */
3120 int laststatval;
3121 Stat_t statcache;
3122};
3123
3124static void
3125coro_aio_callback (pTHX_ CV *cv)
3126{
3127 dXSARGS;
3128 AV *state = (AV *)S_GENSUB_ARG;
3129 SV *coro = av_pop (state);
3130 SV *data_sv = newSV (sizeof (struct io_state));
3131
3132 av_extend (state, items - 1);
3133
3134 sv_upgrade (data_sv, SVt_PV);
3135 SvCUR_set (data_sv, sizeof (struct io_state));
3136 SvPOK_only (data_sv);
3137
3138 {
3139 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3140
3141 data->errorno = errno;
3142 data->laststype = PL_laststype;
3143 data->laststatval = PL_laststatval;
3144 data->statcache = PL_statcache;
3145 }
3146
3147 /* now build the result vector out of all the parameters and the data_sv */
3148 {
3149 int i;
3150
3151 for (i = 0; i < items; ++i)
3152 av_push (state, SvREFCNT_inc_NN (ST (i)));
3153 }
3154
3155 av_push (state, data_sv);
3156
3157 api_ready (aTHX_ coro);
3158 SvREFCNT_dec (coro);
3159 SvREFCNT_dec ((AV *)state);
3160}
3161
3162static int
3163slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3164{
3165 AV *state = (AV *)frame->data;
3166
3167 /* if we are about to throw, return early */
3168 /* this does not cancel the aio request, but at least */
3169 /* it quickly returns */
3170 if (CORO_THROW)
3171 return 0;
3172
3173 /* one element that is an RV? repeat! */
3174 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3175 return 1;
3176
3177 /* restore status */
3178 {
3179 SV *data_sv = av_pop (state);
3180 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3181
3182 errno = data->errorno;
3183 PL_laststype = data->laststype;
3184 PL_laststatval = data->laststatval;
3185 PL_statcache = data->statcache;
3186
3187 SvREFCNT_dec (data_sv);
3188 }
3189
3190 /* push result values */
3191 {
3192 dSP;
3193 int i;
3194
3195 EXTEND (SP, AvFILLp (state) + 1);
3196 for (i = 0; i <= AvFILLp (state); ++i)
3197 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3198
3199 PUTBACK;
3200 }
3201
3202 return 0;
3203}
3204
3205static void
3206slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3207{
3208 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3209 SV *coro_hv = SvRV (coro_current);
3210 struct coro *coro = SvSTATE_hv (coro_hv);
3211
3212 /* put our coroutine id on the state arg */
3213 av_push (state, SvREFCNT_inc_NN (coro_hv));
3214
3215 /* first see whether we have a non-zero priority and set it as AIO prio */
3216 if (coro->prio)
3217 {
3218 dSP;
3219
3220 static SV *prio_cv;
3221 static SV *prio_sv;
3222
3223 if (ecb_expect_false (!prio_cv))
3224 {
3225 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3226 prio_sv = newSViv (0);
3227 }
3228
3229 PUSHMARK (SP);
3230 sv_setiv (prio_sv, coro->prio);
3231 XPUSHs (prio_sv);
3232
3233 PUTBACK;
3234 call_sv (prio_cv, G_VOID | G_DISCARD);
3235 }
3236
3237 /* now call the original request */
3238 {
3239 dSP;
3240 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3241 int i;
3242
3243 PUSHMARK (SP);
3244
3245 /* first push all args to the stack */
3246 EXTEND (SP, items + 1);
3247
3248 for (i = 0; i < items; ++i)
3249 PUSHs (arg [i]);
3250
3251 /* now push the callback closure */
3252 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3253
3254 /* now call the AIO function - we assume our request is uncancelable */
3255 PUTBACK;
3256 call_sv ((SV *)req, G_VOID | G_DISCARD);
3257 }
3258
3259 /* now that the request is going, we loop till we have a result */
3260 frame->data = (void *)state;
3261 frame->prepare = prepare_schedule;
3262 frame->check = slf_check_aio_req;
3263}
3264
3265static void
3266coro_aio_req_xs (pTHX_ CV *cv)
3267{
3268 dXSARGS;
3269
3270 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3271
3272 XSRETURN_EMPTY;
3273}
3274
3275/*****************************************************************************/
3276
3277#if CORO_CLONE
3278# include "clone.c"
3279#endif
3280
3281/*****************************************************************************/
3282
3283static SV *
3284coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3285{
3286 SV *coro_sv;
3287 struct coro *coro;
3288 MAGIC *mg;
3289 HV *hv;
3290 SV *cb;
3291 int i;
3292
3293 if (argc > 0)
3294 {
3295 cb = s_get_cv_croak (argv [0]);
3296
3297 if (!is_coro)
3298 {
3299 if (CvISXSUB (cb))
3300 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3301
3302 if (!CvROOT (cb))
3303 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3304 }
3305 }
3306
3307 Newz (0, coro, 1, struct coro);
3308 coro->args = newAV ();
3309 coro->flags = CF_NEW;
3310
3311 if (coro_first) coro_first->prev = coro;
3312 coro->next = coro_first;
3313 coro_first = coro;
3314
3315 coro->hv = hv = newHV ();
3316 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3317 mg->mg_flags |= MGf_DUP;
3318 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3319
3320 if (argc > 0)
3321 {
3322 av_extend (coro->args, argc + is_coro - 1);
3323
3324 if (is_coro)
3325 {
3326 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3327 cb = (SV *)cv_coro_run;
3328 }
3329
3330 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3331
3332 for (i = 1; i < argc; i++)
3333 av_push (coro->args, newSVsv (argv [i]));
3334 }
3335
3336 return coro_sv;
3337}
3338
3339#ifndef __cplusplus
3340ecb_cold XS(boot_Coro__State);
3341#endif
3342
3343#if CORO_JIT
3344
3345static void ecb_noinline ecb_cold
3346pushav_3uv (pTHX_ UV a, UV b, UV c)
3347{
3348 dSP;
3349 AV *av = newAV ();
3350
3351 av_store (av, 2, newSVuv (c));
3352 av_store (av, 1, newSVuv (b));
3353 av_store (av, 0, newSVuv (a));
3354
3355 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3356
3357 PUTBACK;
3358}
3359
3360static void ecb_noinline ecb_cold
3361jit_init (pTHX)
3362{
3363 dSP;
3364 SV *load, *save;
3365 char *map_base;
3366 char *load_ptr, *save_ptr;
3367 STRLEN load_len, save_len;
3368 int count;
3369
3370 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3371
3372 PUSHMARK (SP);
3373#define VARx(name,expr,type) pushav_3uv (aTHX_ (UV)&(expr), offsetof (perl_slots, name), sizeof (type));
3374# include "state.h"
3375#undef VARx
3376 count = call_pv ("Coro::State::_jit", G_ARRAY);
3377 SPAGAIN;
3378
3379 save = POPs; save_ptr = SvPVbyte (save, save_len);
3380 load = POPs; load_ptr = SvPVbyte (load, load_len);
3381
3382 map_base = mmap (0, load_len + save_len + 16, PROT_EXEC | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3383
3384 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3385
3386 load_perl_slots = (load_save_perl_slots_type)map_base;
3387 memcpy (map_base, load_ptr, load_len);
3388
3389 map_base += (load_len + 15) & ~15;
3390
3391 save_perl_slots = (load_save_perl_slots_type)map_base;
3392 memcpy (map_base, save_ptr, save_len);
3393
3394 PUTBACK;
3395 eval_pv ("undef &Coro::State::_jit", 1);
3396}
3397
3398#endif
1734 3399
1735MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3400MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1736 3401
1737PROTOTYPES: DISABLE 3402PROTOTYPES: DISABLE
1738 3403
1739BOOT: 3404BOOT:
1740{ 3405{
1741#ifdef USE_ITHREADS 3406#ifdef USE_ITHREADS
1742 MUTEX_INIT (&coro_mutex); 3407# if CORO_PTHREAD
3408 coro_thx = PERL_GET_CONTEXT;
3409# endif
1743#endif 3410#endif
1744 BOOT_PAGESIZE; 3411 BOOT_PAGESIZE;
3412
3413 /* perl defines these to check for existance first, but why it doesn't */
3414 /* just create them one at init time is not clear to me, except for */
3415 /* programs trying to delete them, but... */
3416 /* anyway, we declare this as invalid and make sure they are initialised here */
3417 DEFSV;
3418 ERRSV;
3419
3420 cctx_current = cctx_new_empty ();
1745 3421
1746 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3422 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1747 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3423 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1748 3424
1749 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3425 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1765 main_top_env = PL_top_env; 3441 main_top_env = PL_top_env;
1766 3442
1767 while (main_top_env->je_prev) 3443 while (main_top_env->je_prev)
1768 main_top_env = main_top_env->je_prev; 3444 main_top_env = main_top_env->je_prev;
1769 3445
1770 coroapi.ver = CORO_API_VERSION;
1771 coroapi.rev = CORO_API_REVISION;
1772 coroapi.transfer = api_transfer;
1773
1774 { 3446 {
1775 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3447 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
1776 3448
1777 if (!svp) croak ("Time::HiRes is required"); 3449 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
1778 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3450 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
1779 3451
1780 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3452 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3453 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
1781 } 3454 }
1782 3455
3456 coroapi.ver = CORO_API_VERSION;
3457 coroapi.rev = CORO_API_REVISION;
3458
3459 coroapi.transfer = api_transfer;
3460
3461 coroapi.sv_state = SvSTATE_;
3462 coroapi.execute_slf = api_execute_slf;
3463 coroapi.prepare_nop = prepare_nop;
3464 coroapi.prepare_schedule = prepare_schedule;
3465 coroapi.prepare_cede = prepare_cede;
3466 coroapi.prepare_cede_notself = prepare_cede_notself;
3467
3468 time_init (aTHX);
3469
1783 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3470 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3471#if CORO_JIT
3472 PUTBACK;
3473 jit_init (aTHX);
3474 SPAGAIN;
3475#endif
1784} 3476}
1785 3477
1786SV * 3478SV *
1787new (char *klass, ...) 3479new (SV *klass, ...)
3480 ALIAS:
3481 Coro::new = 1
1788 CODE: 3482 CODE:
1789{ 3483 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
1790 struct coro *coro;
1791 MAGIC *mg;
1792 HV *hv;
1793 int i;
1794
1795 Newz (0, coro, 1, struct coro);
1796 coro->args = newAV ();
1797 coro->flags = CF_NEW;
1798
1799 if (coro_first) coro_first->prev = coro;
1800 coro->next = coro_first;
1801 coro_first = coro;
1802
1803 coro->hv = hv = newHV ();
1804 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
1805 mg->mg_flags |= MGf_DUP;
1806 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1807
1808 av_extend (coro->args, items - 1);
1809 for (i = 1; i < items; i++)
1810 av_push (coro->args, newSVsv (ST (i)));
1811}
1812 OUTPUT:
1813 RETVAL
1814
1815# these not obviously related functions are all rolled into the same xs
1816# function to increase chances that they all will call transfer with the same
1817# stack offset
1818void
1819_set_stacklevel (...)
1820 ALIAS:
1821 Coro::State::transfer = 1
1822 Coro::schedule = 2
1823 Coro::cede = 3
1824 Coro::cede_notself = 4
1825 CODE:
1826{
1827 struct transfer_args ta;
1828
1829 PUTBACK;
1830 switch (ix)
1831 {
1832 case 0:
1833 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1834 ta.next = 0;
1835 break;
1836
1837 case 1:
1838 if (items != 2)
1839 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1840
1841 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1842 break;
1843
1844 case 2:
1845 prepare_schedule (aTHX_ &ta);
1846 break;
1847
1848 case 3:
1849 prepare_cede (aTHX_ &ta);
1850 break;
1851
1852 case 4:
1853 if (!prepare_cede_notself (aTHX_ &ta))
1854 XSRETURN_EMPTY;
1855
1856 break;
1857 }
1858 SPAGAIN;
1859
1860 BARRIER;
1861 PUTBACK;
1862 TRANSFER (ta, 0);
1863 SPAGAIN; /* might be the sp of a different coroutine now */
1864 /* be extra careful not to ever do anything after TRANSFER */
1865}
1866
1867bool
1868_destroy (SV *coro_sv)
1869 CODE:
1870 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1871 OUTPUT: 3484 OUTPUT:
1872 RETVAL 3485 RETVAL
3486
3487void
3488transfer (...)
3489 PROTOTYPE: $$
3490 CODE:
3491 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1873 3492
1874void 3493void
1875_exit (int code) 3494_exit (int code)
1876 PROTOTYPE: $ 3495 PROTOTYPE: $
1877 CODE: 3496 CODE:
1878 _exit (code); 3497 _exit (code);
1879 3498
3499SV *
3500clone (Coro::State coro)
3501 CODE:
3502{
3503#if CORO_CLONE
3504 struct coro *ncoro = coro_clone (aTHX_ coro);
3505 MAGIC *mg;
3506 /* TODO: too much duplication */
3507 ncoro->hv = newHV ();
3508 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3509 mg->mg_flags |= MGf_DUP;
3510 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3511#else
3512 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3513#endif
3514}
3515 OUTPUT:
3516 RETVAL
3517
1880int 3518int
1881cctx_stacksize (int new_stacksize = 0) 3519cctx_stacksize (int new_stacksize = 0)
3520 PROTOTYPE: ;$
1882 CODE: 3521 CODE:
1883 RETVAL = coro_stacksize; 3522 RETVAL = cctx_stacksize;
1884 if (new_stacksize) 3523 if (new_stacksize)
3524 {
1885 coro_stacksize = new_stacksize; 3525 cctx_stacksize = new_stacksize;
3526 ++cctx_gen;
3527 }
1886 OUTPUT: 3528 OUTPUT:
1887 RETVAL 3529 RETVAL
1888 3530
1889int 3531int
3532cctx_max_idle (int max_idle = 0)
3533 PROTOTYPE: ;$
3534 CODE:
3535 RETVAL = cctx_max_idle;
3536 if (max_idle > 1)
3537 cctx_max_idle = max_idle;
3538 OUTPUT:
3539 RETVAL
3540
3541int
1890cctx_count () 3542cctx_count ()
3543 PROTOTYPE:
1891 CODE: 3544 CODE:
1892 RETVAL = cctx_count; 3545 RETVAL = cctx_count;
1893 OUTPUT: 3546 OUTPUT:
1894 RETVAL 3547 RETVAL
1895 3548
1896int 3549int
1897cctx_idle () 3550cctx_idle ()
3551 PROTOTYPE:
1898 CODE: 3552 CODE:
1899 RETVAL = cctx_idle; 3553 RETVAL = cctx_idle;
1900 OUTPUT: 3554 OUTPUT:
1901 RETVAL 3555 RETVAL
1902 3556
1903void 3557void
1904list () 3558list ()
3559 PROTOTYPE:
1905 PPCODE: 3560 PPCODE:
1906{ 3561{
1907 struct coro *coro; 3562 struct coro *coro;
1908 for (coro = coro_first; coro; coro = coro->next) 3563 for (coro = coro_first; coro; coro = coro->next)
1909 if (coro->hv) 3564 if (coro->hv)
… …
1916 eval = 1 3571 eval = 1
1917 CODE: 3572 CODE:
1918{ 3573{
1919 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3574 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1920 { 3575 {
1921 struct coro temp; 3576 struct coro *current = SvSTATE_current;
3577 struct CoroSLF slf_save;
1922 3578
1923 if (!(coro->flags & CF_RUNNING)) 3579 if (current != coro)
1924 { 3580 {
1925 PUTBACK; 3581 PUTBACK;
1926 save_perl (aTHX_ &temp); 3582 save_perl (aTHX_ current);
1927 load_perl (aTHX_ coro); 3583 load_perl (aTHX_ coro);
3584 /* the coro is most likely in an active SLF call.
3585 * while not strictly required (the code we execute is
3586 * not allowed to call any SLF functions), it's cleaner
3587 * to reinitialise the slf_frame and restore it later.
3588 * This might one day allow us to actually do SLF calls
3589 * from code executed here.
3590 */
3591 slf_save = slf_frame;
3592 slf_frame.prepare = 0;
3593 SPAGAIN;
1928 } 3594 }
1929 3595
1930 {
1931 dSP;
1932 ENTER;
1933 SAVETMPS;
1934 PUTBACK;
1935 PUSHSTACK; 3596 PUSHSTACK;
3597
1936 PUSHMARK (SP); 3598 PUSHMARK (SP);
3599 PUTBACK;
1937 3600
1938 if (ix) 3601 if (ix)
1939 eval_sv (coderef, 0); 3602 eval_sv (coderef, 0);
1940 else 3603 else
1941 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3604 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1942 3605
1943 POPSTACK; 3606 POPSTACK;
1944 SPAGAIN; 3607 SPAGAIN;
1945 FREETMPS;
1946 LEAVE;
1947 PUTBACK;
1948 }
1949 3608
1950 if (!(coro->flags & CF_RUNNING)) 3609 if (current != coro)
1951 { 3610 {
3611 PUTBACK;
3612 slf_frame = slf_save;
1952 save_perl (aTHX_ coro); 3613 save_perl (aTHX_ coro);
1953 load_perl (aTHX_ &temp); 3614 load_perl (aTHX_ current);
1954 SPAGAIN; 3615 SPAGAIN;
1955 } 3616 }
1956 } 3617 }
1957} 3618}
1958 3619
… …
1961 PROTOTYPE: $ 3622 PROTOTYPE: $
1962 ALIAS: 3623 ALIAS:
1963 is_ready = CF_READY 3624 is_ready = CF_READY
1964 is_running = CF_RUNNING 3625 is_running = CF_RUNNING
1965 is_new = CF_NEW 3626 is_new = CF_NEW
1966 is_destroyed = CF_DESTROYED 3627 is_destroyed = CF_ZOMBIE
3628 is_zombie = CF_ZOMBIE
3629 is_suspended = CF_SUSPENDED
1967 CODE: 3630 CODE:
1968 RETVAL = boolSV (coro->flags & ix); 3631 RETVAL = boolSV (coro->flags & ix);
1969 OUTPUT: 3632 OUTPUT:
1970 RETVAL 3633 RETVAL
1971 3634
1972void 3635void
3636throw (Coro::State self, SV *exception = &PL_sv_undef)
3637 PROTOTYPE: $;$
3638 CODE:
3639{
3640 struct coro *current = SvSTATE_current;
3641 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3642 SvREFCNT_dec (*exceptionp);
3643 SvGETMAGIC (exception);
3644 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3645}
3646
3647void
1973api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3648api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3649 PROTOTYPE: $;$
3650 C_ARGS: aTHX_ coro, flags
1974 3651
1975SV * 3652SV *
1976has_cctx (Coro::State coro) 3653has_cctx (Coro::State coro)
1977 PROTOTYPE: $ 3654 PROTOTYPE: $
1978 CODE: 3655 CODE:
1979 RETVAL = boolSV (!!coro->cctx); 3656 /* maybe manage the running flag differently */
3657 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
1980 OUTPUT: 3658 OUTPUT:
1981 RETVAL 3659 RETVAL
1982 3660
1983int 3661int
1984is_traced (Coro::State coro) 3662is_traced (Coro::State coro)
… …
1986 CODE: 3664 CODE:
1987 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 3665 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1988 OUTPUT: 3666 OUTPUT:
1989 RETVAL 3667 RETVAL
1990 3668
1991IV 3669UV
1992rss (Coro::State coro) 3670rss (Coro::State coro)
1993 PROTOTYPE: $ 3671 PROTOTYPE: $
1994 ALIAS: 3672 ALIAS:
1995 usecount = 1 3673 usecount = 1
1996 CODE: 3674 CODE:
… …
2002 OUTPUT: 3680 OUTPUT:
2003 RETVAL 3681 RETVAL
2004 3682
2005void 3683void
2006force_cctx () 3684force_cctx ()
3685 PROTOTYPE:
2007 CODE: 3686 CODE:
2008 struct coro *coro = SvSTATE (coro_current);
2009 coro->cctx->idle_sp = 0; 3687 cctx_current->idle_sp = 0;
2010 3688
2011void 3689void
2012swap_defsv (Coro::State self) 3690swap_defsv (Coro::State self)
2013 PROTOTYPE: $ 3691 PROTOTYPE: $
2014 ALIAS: 3692 ALIAS:
2015 swap_defav = 1 3693 swap_defav = 1
2016 CODE: 3694 CODE:
2017 if (!self->slot) 3695 if (!self->slot)
2018 croak ("cannot swap state with coroutine that has no saved state"); 3696 croak ("cannot swap state with coroutine that has no saved state,");
2019 else 3697 else
2020 { 3698 {
2021 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3699 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2022 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3700 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2023 3701
2024 SV *tmp = *src; *src = *dst; *dst = tmp; 3702 SV *tmp = *src; *src = *dst; *dst = tmp;
2025 } 3703 }
2026 3704
3705void
3706cancel (Coro::State self)
3707 CODE:
3708 coro_state_destroy (aTHX_ self);
3709
3710SV *
3711enable_times (int enabled = enable_times)
3712 CODE:
3713{
3714 RETVAL = boolSV (enable_times);
3715
3716 if (enabled != enable_times)
3717 {
3718 enable_times = enabled;
3719
3720 coro_times_update ();
3721 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3722 }
3723}
3724 OUTPUT:
3725 RETVAL
3726
3727void
3728times (Coro::State self)
3729 PPCODE:
3730{
3731 struct coro *current = SvSTATE (coro_current);
3732
3733 if (ecb_expect_false (current == self))
3734 {
3735 coro_times_update ();
3736 coro_times_add (SvSTATE (coro_current));
3737 }
3738
3739 EXTEND (SP, 2);
3740 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3741 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3742
3743 if (ecb_expect_false (current == self))
3744 coro_times_sub (SvSTATE (coro_current));
3745}
3746
3747void
3748swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3749 CODE:
3750{
3751 struct coro *current = SvSTATE_current;
3752
3753 if (current == coro)
3754 SWAP_SVS (current);
3755
3756 if (!coro->swap_sv)
3757 coro->swap_sv = newAV ();
3758
3759 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3760 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3761
3762 if (current == coro)
3763 SWAP_SVS (current);
3764}
3765
3766
2027MODULE = Coro::State PACKAGE = Coro 3767MODULE = Coro::State PACKAGE = Coro
2028 3768
2029BOOT: 3769BOOT:
2030{ 3770{
2031 int i;
2032
2033 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2034 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3771 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2035 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3772 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2036 3773 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2037 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3774 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2038 SvREADONLY_on (coro_current); 3775 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3776 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3777 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3778 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2039 3779
3780 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3781 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3782 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3783 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3784
2040 coro_stash = gv_stashpv ("Coro", TRUE); 3785 coro_stash = gv_stashpv ("Coro", TRUE);
2041 3786
2042 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3787 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2043 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3788 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2044 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3789 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2045 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3790 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2046 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3791 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2047 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3792 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2048
2049 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2050 coro_ready[i] = newAV ();
2051 3793
2052 { 3794 {
2053 SV *sv = perl_get_sv ("Coro::API", TRUE); 3795 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2054 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2055 3796
2056 coroapi.schedule = api_schedule; 3797 coroapi.schedule = api_schedule;
3798 coroapi.schedule_to = api_schedule_to;
2057 coroapi.cede = api_cede; 3799 coroapi.cede = api_cede;
2058 coroapi.cede_notself = api_cede_notself; 3800 coroapi.cede_notself = api_cede_notself;
2059 coroapi.ready = api_ready; 3801 coroapi.ready = api_ready;
2060 coroapi.is_ready = api_is_ready; 3802 coroapi.is_ready = api_is_ready;
2061 coroapi.nready = &coro_nready; 3803 coroapi.nready = coro_nready;
2062 coroapi.current = coro_current; 3804 coroapi.current = coro_current;
2063 3805
2064 GCoroAPI = &coroapi; 3806 /*GCoroAPI = &coroapi;*/
2065 sv_setiv (sv, (IV)&coroapi); 3807 sv_setiv (sv, (IV)&coroapi);
2066 SvREADONLY_on (sv); 3808 SvREADONLY_on (sv);
2067 } 3809 }
2068} 3810}
3811
3812SV *
3813async (...)
3814 PROTOTYPE: &@
3815 CODE:
3816 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3817 api_ready (aTHX_ RETVAL);
3818 OUTPUT:
3819 RETVAL
3820
3821void
3822_destroy (Coro::State coro)
3823 CODE:
3824 /* used by the manager thread */
3825 coro_state_destroy (aTHX_ coro);
3826
3827void
3828on_destroy (Coro::State coro, SV *cb)
3829 CODE:
3830 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3831
3832void
3833join (...)
3834 CODE:
3835 CORO_EXECUTE_SLF_XS (slf_init_join);
3836
3837void
3838terminate (...)
3839 CODE:
3840 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3841
3842void
3843cancel (...)
3844 CODE:
3845 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3846
3847int
3848safe_cancel (Coro::State self, ...)
3849 C_ARGS: aTHX_ self, &ST (1), items - 1
3850
3851void
3852schedule (...)
3853 CODE:
3854 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3855
3856void
3857schedule_to (...)
3858 CODE:
3859 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3860
3861void
3862cede_to (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3865
3866void
3867cede (...)
3868 CODE:
3869 CORO_EXECUTE_SLF_XS (slf_init_cede);
3870
3871void
3872cede_notself (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2069 3875
2070void 3876void
2071_set_current (SV *current) 3877_set_current (SV *current)
2072 PROTOTYPE: $ 3878 PROTOTYPE: $
2073 CODE: 3879 CODE:
… …
2076 3882
2077void 3883void
2078_set_readyhook (SV *hook) 3884_set_readyhook (SV *hook)
2079 PROTOTYPE: $ 3885 PROTOTYPE: $
2080 CODE: 3886 CODE:
2081 LOCK;
2082 SvREFCNT_dec (coro_readyhook); 3887 SvREFCNT_dec (coro_readyhook);
3888 SvGETMAGIC (hook);
3889 if (SvOK (hook))
3890 {
2083 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3891 coro_readyhook = newSVsv (hook);
2084 UNLOCK; 3892 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3893 }
3894 else
3895 {
3896 coro_readyhook = 0;
3897 CORO_READYHOOK = 0;
3898 }
2085 3899
2086int 3900int
2087prio (Coro::State coro, int newprio = 0) 3901prio (Coro::State coro, int newprio = 0)
3902 PROTOTYPE: $;$
2088 ALIAS: 3903 ALIAS:
2089 nice = 1 3904 nice = 1
2090 CODE: 3905 CODE:
2091{ 3906{
2092 RETVAL = coro->prio; 3907 RETVAL = coro->prio;
… …
2094 if (items > 1) 3909 if (items > 1)
2095 { 3910 {
2096 if (ix) 3911 if (ix)
2097 newprio = coro->prio - newprio; 3912 newprio = coro->prio - newprio;
2098 3913
2099 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3914 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2100 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3915 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2101 3916
2102 coro->prio = newprio; 3917 coro->prio = newprio;
2103 } 3918 }
2104} 3919}
2105 OUTPUT: 3920 OUTPUT:
… …
2107 3922
2108SV * 3923SV *
2109ready (SV *self) 3924ready (SV *self)
2110 PROTOTYPE: $ 3925 PROTOTYPE: $
2111 CODE: 3926 CODE:
2112 RETVAL = boolSV (api_ready (self)); 3927 RETVAL = boolSV (api_ready (aTHX_ self));
2113 OUTPUT: 3928 OUTPUT:
2114 RETVAL 3929 RETVAL
2115 3930
2116int 3931int
2117nready (...) 3932nready (...)
… …
2120 RETVAL = coro_nready; 3935 RETVAL = coro_nready;
2121 OUTPUT: 3936 OUTPUT:
2122 RETVAL 3937 RETVAL
2123 3938
2124void 3939void
2125throw (Coro::State self, SV *throw = &PL_sv_undef) 3940suspend (Coro::State self)
2126 PROTOTYPE: $;$ 3941 PROTOTYPE: $
2127 CODE: 3942 CODE:
2128 SvREFCNT_dec (self->throw); 3943 self->flags |= CF_SUSPENDED;
2129 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2130 3944
2131# for async_pool speedup
2132void 3945void
2133_pool_1 (SV *cb) 3946resume (Coro::State self)
3947 PROTOTYPE: $
2134 CODE: 3948 CODE:
2135{ 3949 self->flags &= ~CF_SUSPENDED;
2136 struct coro *coro = SvSTATE (coro_current);
2137 HV *hv = (HV *)SvRV (coro_current);
2138 AV *defav = GvAV (PL_defgv);
2139 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2140 AV *invoke_av;
2141 int i, len;
2142 3950
2143 if (!invoke) 3951void
3952_pool_handler (...)
3953 CODE:
3954 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3955
3956void
3957async_pool (SV *cv, ...)
3958 PROTOTYPE: &@
3959 PPCODE:
3960{
3961 HV *hv = (HV *)av_pop (av_async_pool);
3962 AV *av = newAV ();
3963 SV *cb = ST (0);
3964 int i;
3965
3966 av_extend (av, items - 2);
3967 for (i = 1; i < items; ++i)
3968 av_push (av, SvREFCNT_inc_NN (ST (i)));
3969
3970 if ((SV *)hv == &PL_sv_undef)
2144 { 3971 {
2145 SV *old = PL_diehook; 3972 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2146 PL_diehook = 0; 3973 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2147 SvREFCNT_dec (old); 3974 SvREFCNT_dec (sv);
2148 croak ("\3async_pool terminate\2\n");
2149 } 3975 }
2150 3976
2151 SvREFCNT_dec (coro->saved_deffh);
2152 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2153
2154 hv_store (hv, "desc", sizeof ("desc") - 1,
2155 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2156
2157 invoke_av = (AV *)SvRV (invoke);
2158 len = av_len (invoke_av);
2159
2160 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2161
2162 if (len > 0)
2163 { 3977 {
2164 av_fill (defav, len - 1); 3978 struct coro *coro = SvSTATE_hv (hv);
2165 for (i = 0; i < len; ++i) 3979
2166 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3980 assert (!coro->invoke_cb);
3981 assert (!coro->invoke_av);
3982 coro->invoke_cb = SvREFCNT_inc (cb);
3983 coro->invoke_av = av;
2167 } 3984 }
2168 3985
3986 api_ready (aTHX_ (SV *)hv);
3987
3988 if (GIMME_V != G_VOID)
3989 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3990 else
2169 SvREFCNT_dec (invoke); 3991 SvREFCNT_dec (hv);
2170} 3992}
2171 3993
2172void 3994SV *
2173_pool_2 (SV *cb) 3995rouse_cb ()
3996 PROTOTYPE:
2174 CODE: 3997 CODE:
2175{ 3998 RETVAL = coro_new_rouse_cb (aTHX);
2176 struct coro *coro = SvSTATE (coro_current);
2177
2178 sv_setsv (cb, &PL_sv_undef);
2179
2180 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2181 coro->saved_deffh = 0;
2182
2183 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
2184 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2185 {
2186 SV *old = PL_diehook;
2187 PL_diehook = 0;
2188 SvREFCNT_dec (old);
2189 croak ("\3async_pool terminate\2\n");
2190 }
2191
2192 av_clear (GvAV (PL_defgv));
2193 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2194 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2195
2196 coro->prio = 0;
2197
2198 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2199 api_trace (coro_current, 0);
2200
2201 av_push (av_async_pool, newSVsv (coro_current));
2202}
2203
2204#if 0
2205
2206void
2207_generator_call (...)
2208 PROTOTYPE: @
2209 PPCODE:
2210 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2211 xxxx
2212 abort ();
2213
2214SV *
2215gensub (SV *sub, ...)
2216 PROTOTYPE: &;@
2217 CODE:
2218{
2219 struct coro *coro;
2220 MAGIC *mg;
2221 CV *xcv;
2222 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2223 int i;
2224
2225 CvGV (ncv) = CvGV (cv);
2226 CvFILE (ncv) = CvFILE (cv);
2227
2228 Newz (0, coro, 1, struct coro);
2229 coro->args = newAV ();
2230 coro->flags = CF_NEW;
2231
2232 av_extend (coro->args, items - 1);
2233 for (i = 1; i < items; i++)
2234 av_push (coro->args, newSVsv (ST (i)));
2235
2236 CvISXSUB_on (ncv);
2237 CvXSUBANY (ncv).any_ptr = (void *)coro;
2238
2239 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2240
2241 CvXSUB (ncv) = CvXSUB (xcv);
2242 CvANON_on (ncv);
2243
2244 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2245 RETVAL = newRV_noinc ((SV *)ncv);
2246}
2247 OUTPUT: 3999 OUTPUT:
2248 RETVAL 4000 RETVAL
2249 4001
2250#endif
2251
2252
2253MODULE = Coro::State PACKAGE = Coro::AIO
2254
2255void 4002void
2256_get_state (SV *self) 4003rouse_wait (...)
4004 PROTOTYPE: ;$
2257 PPCODE: 4005 PPCODE:
2258{ 4006 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2259 AV *defav = GvAV (PL_defgv);
2260 AV *av = newAV ();
2261 int i;
2262 SV *data_sv = newSV (sizeof (struct io_state));
2263 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2264 SvCUR_set (data_sv, sizeof (struct io_state));
2265 SvPOK_only (data_sv);
2266
2267 data->errorno = errno;
2268 data->laststype = PL_laststype;
2269 data->laststatval = PL_laststatval;
2270 data->statcache = PL_statcache;
2271
2272 av_extend (av, AvFILLp (defav) + 1 + 1);
2273
2274 for (i = 0; i <= AvFILLp (defav); ++i)
2275 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2276
2277 av_push (av, data_sv);
2278
2279 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2280
2281 api_ready (self);
2282}
2283 4007
2284void 4008void
2285_set_state (SV *state) 4009on_enter (SV *block)
4010 ALIAS:
4011 on_leave = 1
2286 PROTOTYPE: $ 4012 PROTOTYPE: &
4013 CODE:
4014{
4015 struct coro *coro = SvSTATE_current;
4016 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4017
4018 block = s_get_cv_croak (block);
4019
4020 if (!*avp)
4021 *avp = newAV ();
4022
4023 av_push (*avp, SvREFCNT_inc (block));
4024
4025 if (!ix)
4026 on_enterleave_call (aTHX_ block);
4027
4028 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4029 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4030 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4031}
4032
4033
4034MODULE = Coro::State PACKAGE = PerlIO::cede
4035
4036BOOT:
4037 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4038
4039
4040MODULE = Coro::State PACKAGE = Coro::Semaphore
4041
4042SV *
4043new (SV *klass, SV *count = 0)
4044 CODE:
4045{
4046 int semcnt = 1;
4047
4048 if (count)
4049 {
4050 SvGETMAGIC (count);
4051
4052 if (SvOK (count))
4053 semcnt = SvIV (count);
4054 }
4055
4056 RETVAL = sv_bless (
4057 coro_waitarray_new (aTHX_ semcnt),
4058 GvSTASH (CvGV (cv))
4059 );
4060}
4061 OUTPUT:
4062 RETVAL
4063
4064# helper for Coro::Channel and others
4065SV *
4066_alloc (int count)
4067 CODE:
4068 RETVAL = coro_waitarray_new (aTHX_ count);
4069 OUTPUT:
4070 RETVAL
4071
4072SV *
4073count (SV *self)
4074 CODE:
4075 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4076 OUTPUT:
4077 RETVAL
4078
4079void
4080up (SV *self, int adjust = 1)
4081 ALIAS:
4082 adjust = 1
4083 CODE:
4084 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4085
4086void
4087down (...)
4088 CODE:
4089 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4090
4091void
4092wait (...)
4093 CODE:
4094 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4095
4096void
4097try (SV *self)
4098 PPCODE:
4099{
4100 AV *av = (AV *)SvRV (self);
4101 SV *count_sv = AvARRAY (av)[0];
4102 IV count = SvIVX (count_sv);
4103
4104 if (count > 0)
4105 {
4106 --count;
4107 SvIVX (count_sv) = count;
4108 XSRETURN_YES;
4109 }
4110 else
4111 XSRETURN_NO;
4112}
4113
4114void
4115waiters (SV *self)
4116 PPCODE:
4117{
4118 AV *av = (AV *)SvRV (self);
4119 int wcount = AvFILLp (av) + 1 - 1;
4120
4121 if (GIMME_V == G_SCALAR)
4122 XPUSHs (sv_2mortal (newSViv (wcount)));
4123 else
4124 {
4125 int i;
4126 EXTEND (SP, wcount);
4127 for (i = 1; i <= wcount; ++i)
4128 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4129 }
4130}
4131
4132MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4133
4134void
4135_may_delete (SV *sem, int count, int extra_refs)
2287 PPCODE: 4136 PPCODE:
2288{ 4137{
2289 AV *av = (AV *)SvRV (state); 4138 AV *av = (AV *)SvRV (sem);
2290 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2291 int i;
2292 4139
2293 errno = data->errorno; 4140 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2294 PL_laststype = data->laststype; 4141 && AvFILLp (av) == 0 /* no waiters, just count */
2295 PL_laststatval = data->laststatval; 4142 && SvIV (AvARRAY (av)[0]) == count)
2296 PL_statcache = data->statcache; 4143 XSRETURN_YES;
2297 4144
4145 XSRETURN_NO;
4146}
4147
4148MODULE = Coro::State PACKAGE = Coro::Signal
4149
4150SV *
4151new (SV *klass)
4152 CODE:
4153 RETVAL = sv_bless (
4154 coro_waitarray_new (aTHX_ 0),
4155 GvSTASH (CvGV (cv))
4156 );
4157 OUTPUT:
4158 RETVAL
4159
4160void
4161wait (...)
4162 CODE:
4163 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4164
4165void
4166broadcast (SV *self)
4167 CODE:
4168{
4169 AV *av = (AV *)SvRV (self);
4170 coro_signal_wake (aTHX_ av, AvFILLp (av));
4171}
4172
4173void
4174send (SV *self)
4175 CODE:
4176{
4177 AV *av = (AV *)SvRV (self);
4178
2298 EXTEND (SP, AvFILLp (av)); 4179 if (AvFILLp (av))
2299 for (i = 0; i < AvFILLp (av); ++i) 4180 coro_signal_wake (aTHX_ av, 1);
2300 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4181 else
4182 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2301} 4183}
4184
4185IV
4186awaited (SV *self)
4187 CODE:
4188 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4189 OUTPUT:
4190 RETVAL
2302 4191
2303 4192
2304MODULE = Coro::State PACKAGE = Coro::AnyEvent 4193MODULE = Coro::State PACKAGE = Coro::AnyEvent
2305 4194
2306BOOT: 4195BOOT:
2307 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4196 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2308 4197
2309SV * 4198void
2310_schedule (...) 4199_schedule (...)
2311 PROTOTYPE: @
2312 CODE: 4200 CODE:
2313{ 4201{
2314 static int incede; 4202 static int incede;
2315 4203
2316 api_cede_notself (); 4204 api_cede_notself (aTHX);
2317 4205
2318 ++incede; 4206 ++incede;
2319 while (coro_nready >= incede && api_cede ()) 4207 while (coro_nready >= incede && api_cede (aTHX))
2320 ; 4208 ;
2321 4209
2322 sv_setsv (sv_activity, &PL_sv_undef); 4210 sv_setsv (sv_activity, &PL_sv_undef);
2323 if (coro_nready >= incede) 4211 if (coro_nready >= incede)
2324 { 4212 {
2325 PUSHMARK (SP); 4213 PUSHMARK (SP);
2326 PUTBACK; 4214 PUTBACK;
2327 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4215 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2328 SPAGAIN;
2329 } 4216 }
2330 4217
2331 --incede; 4218 --incede;
2332} 4219}
2333 4220
2334 4221
2335MODULE = Coro::State PACKAGE = PerlIO::cede 4222MODULE = Coro::State PACKAGE = Coro::AIO
2336 4223
2337BOOT: 4224void
2338 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4225_register (char *target, char *proto, SV *req)
4226 CODE:
4227{
4228 SV *req_cv = s_get_cv_croak (req);
4229 /* newXSproto doesn't return the CV on 5.8 */
4230 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4231 sv_setpv ((SV *)slf_cv, proto);
4232 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4233}
4234
4235MODULE = Coro::State PACKAGE = Coro::Select
4236
4237void
4238patch_pp_sselect ()
4239 CODE:
4240 if (!coro_old_pp_sselect)
4241 {
4242 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4243 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4244 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4245 }
4246
4247void
4248unpatch_pp_sselect ()
4249 CODE:
4250 if (coro_old_pp_sselect)
4251 {
4252 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4253 coro_old_pp_sselect = 0;
4254 }
4255

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