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Comparing Coro/Coro/State.xs (file contents):
Revision 1.311 by root, Thu Nov 20 01:12:08 2008 UTC vs.
Revision 1.416 by root, Mon Dec 12 15:19:56 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 */ 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#if HAVE_MMAP
27# include <unistd.h> 39# include <unistd.h>
28# include <sys/mman.h> 40# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 41# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 42# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 43# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 63#endif
52 64
53/* the maximum number of idle cctx that will be pooled */ 65/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 66static int cctx_max_idle = 4;
55 67
56#define PERL_VERSION_ATLEAST(a,b,c) \ 68#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 69# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 70#endif
108 71
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
111#endif 74#endif
… …
127#else 90#else
128# define dSTACKLEVEL volatile void *stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 92# define STACKLEVEL ((void *)&stacklevel)
130#endif 93#endif
131 94
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 96
149#include "CoroAPI.h" 97#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 98#define GCoroAPI (&coroapi) /* very sneaky */
151 99
152#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
153# if CORO_PTHREAD 101# if CORO_PTHREAD
154static void *coro_thx; 102static void *coro_thx;
155# endif 103# endif
156#endif 104#endif
157 105
106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
108
109#ifdef __linux
110# include <time.h> /* for timespec */
111# include <syscall.h> /* for SYS_* */
112# ifdef SYS_clock_gettime
113# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
114# define CORO_CLOCK_MONOTONIC 1
115# define CORO_CLOCK_THREAD_CPUTIME_ID 3
116# endif
117#endif
118
158static double (*nvtime)(); /* so why doesn't it take void? */ 119static double (*nvtime)(); /* so why doesn't it take void? */
120static void (*u2time)(pTHX_ UV ret[2]);
159 121
160/* we hijack an hopefully unused CV flag for our purposes */ 122/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 123#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
163 126
164static U32 cctx_gen; 127static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 131static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 134
135static AV *av_destroy; /* destruction queue */
136static SV *sv_manager; /* the manager coro */
137static SV *sv_idle; /* $Coro::idle */
138
172static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 141static SV *rv_diehook;
175static SV *rv_warnhook; 142static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
177 144
178/* async_pool helper stuff */ 145/* async_pool helper stuff */
179static SV *sv_pool_rss; 146static SV *sv_pool_rss;
180static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
182 152
183/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
184static SV *sv_activity; 154static SV *sv_activity;
185 155
156/* enable processtime/realtime profiling */
157static char enable_times;
158typedef U32 coro_ts[2];
159static coro_ts time_real, time_cpu;
160static char times_valid;
161
186static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
188 164
189enum { 165enum
166{
190 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
204 void *sptr; 181 void *sptr;
205 size_t ssize; 182 size_t ssize;
206 183
207 /* cpu state */ 184 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 185 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
186#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 187 JMPENV *idle_te; /* same as idle_sp, but for top_env */
188#endif
210 JMPENV *top_env; 189 JMPENV *top_env;
211 coro_context cctx; 190 coro_context cctx;
212 191
213 U32 gen; 192 U32 gen;
214#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
215 int valgrind_id; 194 int valgrind_id;
216#endif 195#endif
217 unsigned char flags; 196 unsigned char flags;
218} coro_cctx; 197} coro_cctx;
219 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
220enum { 205enum
206{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 210 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
211 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
212 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 213};
226 214
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 215/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 216typedef struct
229{ 217{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 218#define VARx(name,expr,type) type name;
235# include "state.h" 219# include "state.h"
236#undef VAR 220#undef VARx
237} perl_slots; 221} perl_slots;
238 222
223/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 224#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 225
241/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
242struct coro { 227struct coro
228{
243 /* the C coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 230 coro_cctx *cctx;
231
232 /* ready queue */
233 struct coro *next_ready;
245 234
246 /* state data */ 235 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 236 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 237 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
250 239
251 CV *startcv; /* the CV to execute */ 240 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 244
258 /* statistics */ 245 /* statistics */
259 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
260 247
261 /* coro process data */ 248 /* coro process data */
262 int prio; 249 int prio;
263 SV *except; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 251 SV *rouse_cb; /* last rouse callback */
252 AV *on_destroy; /* callbacks or coros to notify on destroy */
253 AV *status; /* the exit status list */
265 254
266 /* async_pool */ 255 /* async_pool */
267 SV *saved_deffh; 256 SV *saved_deffh;
257 SV *invoke_cb;
258 AV *invoke_av;
259
260 /* on_enter/on_leave */
261 AV *on_enter;
262 AV *on_leave;
263
264 /* swap_sv */
265 AV *swap_sv;
266
267 /* times */
268 coro_ts t_cpu, t_real;
268 269
269 /* linked list */ 270 /* linked list */
270 struct coro *next, *prev; 271 struct coro *next, *prev;
271}; 272};
272 273
273typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
275 276
276/* the following variables are effectively part of the perl context */ 277/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 278/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 279/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 280static struct CoroSLF slf_frame; /* the current slf frame */
280 281
281/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
282 283
283#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
289 290
290/* for Coro.pm */ 291/* for Coro.pm */
291static SV *coro_current; 292static SV *coro_current;
292static SV *coro_readyhook; 293static SV *coro_readyhook;
293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
294static CV *cv_coro_run; 295static CV *cv_coro_run;
295static struct coro *coro_first; 296static struct coro *coro_first;
296#define coro_nready coroapi.nready 297#define coro_nready coroapi.nready
297 298
299/** JIT *********************************************************************/
300
301#if CORO_JIT
302 /* APPLE doesn't have HAVE_MMAP though */
303 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
304 #ifndef CORO_JIT_TYPE
305 #if __x86_64 && CORO_JIT_UNIXY
306 #define CORO_JIT_TYPE "amd64-unix"
307 #elif __i386 && CORO_JIT_UNIXY
308 #define CORO_JIT_TYPE "x86-unix"
309 #endif
310 #endif
311#endif
312
313#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
314 #undef CORO_JIT
315#endif
316
317#if CORO_JIT
318 typedef void (*load_save_perl_slots_type)(perl_slots *);
319 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
320#endif
321
322/** Coro::Select ************************************************************/
323
324static OP *(*coro_old_pp_sselect) (pTHX);
325static SV *coro_select_select;
326
327/* horrible hack, but if it works... */
328static OP *
329coro_pp_sselect (pTHX)
330{
331 dSP;
332 PUSHMARK (SP - 4); /* fake argument list */
333 XPUSHs (coro_select_select);
334 PUTBACK;
335
336 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
337 PL_op->op_flags |= OPf_STACKED;
338 PL_op->op_private = 0;
339 return PL_ppaddr [OP_ENTERSUB](aTHX);
340}
341
342/** time stuff **************************************************************/
343
344#ifdef HAS_GETTIMEOFDAY
345
346ecb_inline void
347coro_u2time (pTHX_ UV ret[2])
348{
349 struct timeval tv;
350 gettimeofday (&tv, 0);
351
352 ret [0] = tv.tv_sec;
353 ret [1] = tv.tv_usec;
354}
355
356ecb_inline double
357coro_nvtime (void)
358{
359 struct timeval tv;
360 gettimeofday (&tv, 0);
361
362 return tv.tv_sec + tv.tv_usec * 1e-6;
363}
364
365ecb_inline void
366time_init (pTHX)
367{
368 nvtime = coro_nvtime;
369 u2time = coro_u2time;
370}
371
372#else
373
374ecb_inline void
375time_init (pTHX)
376{
377 SV **svp;
378
379 require_pv ("Time/HiRes.pm");
380
381 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
382
383 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
384 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
385
386 nvtime = INT2PTR (double (*)(), SvIV (*svp));
387
388 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
389 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
390}
391
392#endif
393
298/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
299 395
300static SV * 396static SV * ecb_noinline
301coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
302{ 398{
303#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
304 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 400 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
305 get_sv (name, create); 401 get_sv (name, create);
306#endif 402#endif
307 return get_sv (name, create); 403 return get_sv (name, create);
308} 404}
309 405
310static AV * 406static AV * ecb_noinline
311coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
312{ 408{
313#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
314 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 410 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
315 get_av (name, create); 411 get_av (name, create);
316#endif 412#endif
317 return get_av (name, create); 413 return get_av (name, create);
318} 414}
319 415
320static HV * 416static HV * ecb_noinline
321coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
322{ 418{
323#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
324 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 420 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
325 get_hv (name, create); 421 get_hv (name, create);
326#endif 422#endif
327 return get_hv (name, create); 423 return get_hv (name, create);
328} 424}
329 425
330/* may croak */ 426ecb_inline void
331INLINE CV * 427coro_times_update (void)
332coro_sv_2cv (pTHX_ SV *sv)
333{ 428{
334 HV *st; 429#ifdef coro_clock_gettime
335 GV *gvp; 430 struct timespec ts;
336 return sv_2cv (sv, &st, &gvp, 0);
337}
338 431
339static AV * 432 ts.tv_sec = ts.tv_nsec = 0;
433 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
434 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
435
436 ts.tv_sec = ts.tv_nsec = 0;
437 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
438 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
439#else
440 dTHX;
441 UV tv[2];
442
443 u2time (aTHX_ tv);
444 time_real [0] = tv [0];
445 time_real [1] = tv [1] * 1000;
446#endif
447}
448
449ecb_inline void
450coro_times_add (struct coro *c)
451{
452 c->t_real [1] += time_real [1];
453 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
454 c->t_real [0] += time_real [0];
455
456 c->t_cpu [1] += time_cpu [1];
457 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
458 c->t_cpu [0] += time_cpu [0];
459}
460
461ecb_inline void
462coro_times_sub (struct coro *c)
463{
464 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
465 c->t_real [1] -= time_real [1];
466 c->t_real [0] -= time_real [0];
467
468 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
469 c->t_cpu [1] -= time_cpu [1];
470 c->t_cpu [0] -= time_cpu [0];
471}
472
473/*****************************************************************************/
474/* magic glue */
475
476#define CORO_MAGIC_type_cv 26
477#define CORO_MAGIC_type_state PERL_MAGIC_ext
478
479#define CORO_MAGIC_NN(sv, type) \
480 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
481 ? SvMAGIC (sv) \
482 : mg_find (sv, type))
483
484#define CORO_MAGIC(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)) \
486 ? CORO_MAGIC_NN (sv, type) \
487 : 0)
488
489#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
490#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
491
492ecb_inline MAGIC *
493SvSTATEhv_p (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (ecb_expect_true (
498 SvTYPE (coro) == SVt_PVHV
499 && (mg = CORO_MAGIC_state (coro))
500 && mg->mg_virtual == &coro_state_vtbl
501 ))
502 return mg;
503
504 return 0;
505}
506
507ecb_inline struct coro *
508SvSTATE_ (pTHX_ SV *coro)
509{
510 MAGIC *mg;
511
512 if (SvROK (coro))
513 coro = SvRV (coro);
514
515 mg = SvSTATEhv_p (aTHX_ coro);
516 if (!mg)
517 croak ("Coro::State object required");
518
519 return (struct coro *)mg->mg_ptr;
520}
521
522#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
523
524/* faster than SvSTATE, but expects a coroutine hv */
525#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
526#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
527
528/*****************************************************************************/
529/* padlist management and caching */
530
531ecb_inline AV *
340coro_clone_padlist (pTHX_ CV *cv) 532coro_derive_padlist (pTHX_ CV *cv)
341{ 533{
342 AV *padlist = CvPADLIST (cv); 534 AV *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 535 AV *newpadlist, *newpad;
344 536
345 newpadlist = newAV (); 537 newpadlist = newAV ();
… …
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 542 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 543#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 544 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist); 545 --AvFILLp (padlist);
354 546
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 547 av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
356 av_store (newpadlist, 1, (SV *)newpad); 548 av_store (newpadlist, 1, (SV *)newpad);
357 549
358 return newpadlist; 550 return newpadlist;
359} 551}
360 552
361static void 553ecb_inline void
362free_padlist (pTHX_ AV *padlist) 554free_padlist (pTHX_ AV *padlist)
363{ 555{
364 /* may be during global destruction */ 556 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 557 if (!IN_DESTRUCT)
366 { 558 {
367 I32 i = AvFILLp (padlist); 559 I32 i = AvFILLp (padlist);
368 while (i >= 0) 560
561 while (i > 0) /* special-case index 0 */
369 { 562 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 563 /* we try to be extra-careful here */
371 if (svp) 564 AV *av = (AV *)AvARRAY (padlist)[i--];
372 { 565 I32 j = AvFILLp (av);
373 SV *sv; 566
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 567 while (j >= 0)
568 SvREFCNT_dec (AvARRAY (av)[j--]);
569
570 AvFILLp (av) = -1;
375 SvREFCNT_dec (sv); 571 SvREFCNT_dec (av);
376
377 SvREFCNT_dec (*svp);
378 }
379 } 572 }
380 573
574 SvREFCNT_dec (AvARRAY (padlist)[0]);
575
576 AvFILLp (padlist) = -1;
381 SvREFCNT_dec ((SV*)padlist); 577 SvREFCNT_dec ((SV*)padlist);
382 } 578 }
383} 579}
384 580
385static int 581static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 582coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 583{
388 AV *padlist; 584 AV *padlist;
389 AV *av = (AV *)mg->mg_obj; 585 AV *av = (AV *)mg->mg_obj;
586
587 /* perl manages to free our internal AV and _then_ call us */
588 if (IN_DESTRUCT)
589 return 0;
390 590
391 /* casting is fun. */ 591 /* casting is fun. */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 592 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
393 free_padlist (aTHX_ padlist); 593 free_padlist (aTHX_ padlist);
394 594
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 595 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 596
397 return 0; 597 return 0;
398} 598}
399
400#define CORO_MAGIC_type_cv 26
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 599
403static MGVTBL coro_cv_vtbl = { 600static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 601 0, 0, 0, 0,
405 coro_cv_free 602 coro_cv_free
406}; 603};
407 604
408#define CORO_MAGIC_NN(sv, type) \
409 (expect_true (SvMAGIC (sv)->mg_type == type) \
410 ? SvMAGIC (sv) \
411 : mg_find (sv, type))
412
413#define CORO_MAGIC(sv, type) \
414 (expect_true (SvMAGIC (sv)) \
415 ? CORO_MAGIC_NN (sv, type) \
416 : 0)
417
418#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
419#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
420
421INLINE struct coro *
422SvSTATE_ (pTHX_ SV *coro)
423{
424 HV *stash;
425 MAGIC *mg;
426
427 if (SvROK (coro))
428 coro = SvRV (coro);
429
430 if (expect_false (SvTYPE (coro) != SVt_PVHV))
431 croak ("Coro::State object required");
432
433 stash = SvSTASH (coro);
434 if (expect_false (stash != coro_stash && stash != coro_state_stash))
435 {
436 /* very slow, but rare, check */
437 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
438 croak ("Coro::State object required");
439 }
440
441 mg = CORO_MAGIC_state (coro);
442 return (struct coro *)mg->mg_ptr;
443}
444
445#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
446
447/* faster than SvSTATE, but expects a coroutine hv */
448#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
449#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
450
451/* the next two functions merely cache the padlists */ 605/* the next two functions merely cache the padlists */
452static void 606ecb_inline void
453get_padlist (pTHX_ CV *cv) 607get_padlist (pTHX_ CV *cv)
454{ 608{
455 MAGIC *mg = CORO_MAGIC_cv (cv); 609 MAGIC *mg = CORO_MAGIC_cv (cv);
456 AV *av; 610 AV *av;
457 611
458 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 612 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
459 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 613 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
460 else 614 else
461 { 615 {
462#if CORO_PREFER_PERL_FUNCTIONS 616#if CORO_PREFER_PERL_FUNCTIONS
463 /* this is probably cleaner? but also slower! */ 617 /* this is probably cleaner? but also slower! */
… …
465 CV *cp = Perl_cv_clone (aTHX_ cv); 619 CV *cp = Perl_cv_clone (aTHX_ cv);
466 CvPADLIST (cv) = CvPADLIST (cp); 620 CvPADLIST (cv) = CvPADLIST (cp);
467 CvPADLIST (cp) = 0; 621 CvPADLIST (cp) = 0;
468 SvREFCNT_dec (cp); 622 SvREFCNT_dec (cp);
469#else 623#else
470 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 624 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
471#endif 625#endif
472 } 626 }
473} 627}
474 628
475static void 629ecb_inline void
476put_padlist (pTHX_ CV *cv) 630put_padlist (pTHX_ CV *cv)
477{ 631{
478 MAGIC *mg = CORO_MAGIC_cv (cv); 632 MAGIC *mg = CORO_MAGIC_cv (cv);
479 AV *av; 633 AV *av;
480 634
481 if (expect_false (!mg)) 635 if (ecb_expect_false (!mg))
482 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 636 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
483 637
484 av = (AV *)mg->mg_obj; 638 av = (AV *)mg->mg_obj;
485 639
486 if (expect_false (AvFILLp (av) >= AvMAX (av))) 640 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
487 av_extend (av, AvMAX (av) + 1); 641 av_extend (av, AvFILLp (av) + 1);
488 642
489 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 643 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
490} 644}
491 645
492/** load & save, init *******************************************************/ 646/** load & save, init *******************************************************/
647
648ecb_inline void
649swap_sv (SV *a, SV *b)
650{
651 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
652 SV tmp;
653
654 /* swap sv_any */
655 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
656
657 /* swap sv_flags */
658 SvFLAGS (&tmp) = SvFLAGS (a);
659 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
660 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
661
662#if PERL_VERSION_ATLEAST (5,10,0)
663 /* perl 5.10 and later complicates this _quite_ a bit, but it also
664 * is much faster, so no quarrels here. alternatively, we could
665 * sv_upgrade to avoid this.
666 */
667 {
668 /* swap sv_u */
669 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
670
671 /* if SvANY points to the head, we need to adjust the pointers,
672 * as the pointer for a still points to b, and maybe vice versa.
673 */
674 #define svany_in_head(type) \
675 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
676
677 if (svany_in_head (SvTYPE (a)))
678 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
679
680 if (svany_in_head (SvTYPE (b)))
681 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
682 }
683#endif
684}
685
686/* swap sv heads, at least logically */
687static void
688swap_svs (pTHX_ Coro__State c)
689{
690 int i;
691
692 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
693 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
694}
695
696#define SWAP_SVS(coro) \
697 if (ecb_expect_false ((coro)->swap_sv)) \
698 swap_svs (aTHX_ (coro))
699
700static void
701on_enterleave_call (pTHX_ SV *cb);
493 702
494static void 703static void
495load_perl (pTHX_ Coro__State c) 704load_perl (pTHX_ Coro__State c)
496{ 705{
497 perl_slots *slot = c->slot; 706 perl_slots *slot = c->slot;
498 c->slot = 0; 707 c->slot = 0;
499 708
500 PL_mainstack = c->mainstack; 709 PL_mainstack = c->mainstack;
501 710
502 GvSV (PL_defgv) = slot->defsv; 711#if CORO_JIT
503 GvAV (PL_defgv) = slot->defav; 712 load_perl_slots (slot);
504 GvSV (PL_errgv) = slot->errsv; 713#else
505 GvSV (irsgv) = slot->irsgv;
506
507 #define VAR(name,type) PL_ ## name = slot->name; 714 #define VARx(name,expr,type) expr = slot->name;
508 # include "state.h" 715 # include "state.h"
509 #undef VAR 716 #undef VARx
717#endif
510 718
511 { 719 {
512 dSP; 720 dSP;
513 721
514 CV *cv; 722 CV *cv;
515 723
516 /* now do the ugly restore mess */ 724 /* now do the ugly restore mess */
517 while (expect_true (cv = (CV *)POPs)) 725 while (ecb_expect_true (cv = (CV *)POPs))
518 { 726 {
519 put_padlist (aTHX_ cv); /* mark this padlist as available */ 727 put_padlist (aTHX_ cv); /* mark this padlist as available */
520 CvDEPTH (cv) = PTR2IV (POPs); 728 CvDEPTH (cv) = PTR2IV (POPs);
521 CvPADLIST (cv) = (AV *)POPs; 729 CvPADLIST (cv) = (AV *)POPs;
522 } 730 }
… …
524 PUTBACK; 732 PUTBACK;
525 } 733 }
526 734
527 slf_frame = c->slf_frame; 735 slf_frame = c->slf_frame;
528 CORO_THROW = c->except; 736 CORO_THROW = c->except;
737
738 if (ecb_expect_false (enable_times))
739 {
740 if (ecb_expect_false (!times_valid))
741 coro_times_update ();
742
743 coro_times_sub (c);
744 }
745
746 if (ecb_expect_false (c->on_enter))
747 {
748 int i;
749
750 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
751 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
752 }
753
754 SWAP_SVS (c);
529} 755}
530 756
531static void 757static void
532save_perl (pTHX_ Coro__State c) 758save_perl (pTHX_ Coro__State c)
533{ 759{
760 SWAP_SVS (c);
761
762 if (ecb_expect_false (c->on_leave))
763 {
764 int i;
765
766 for (i = AvFILLp (c->on_leave); i >= 0; --i)
767 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
768 }
769
770 times_valid = 0;
771
772 if (ecb_expect_false (enable_times))
773 {
774 coro_times_update (); times_valid = 1;
775 coro_times_add (c);
776 }
777
534 c->except = CORO_THROW; 778 c->except = CORO_THROW;
535 c->slf_frame = slf_frame; 779 c->slf_frame = slf_frame;
536 780
537 { 781 {
538 dSP; 782 dSP;
… …
547 791
548 XPUSHs (Nullsv); 792 XPUSHs (Nullsv);
549 /* this loop was inspired by pp_caller */ 793 /* this loop was inspired by pp_caller */
550 for (;;) 794 for (;;)
551 { 795 {
552 while (expect_true (cxix >= 0)) 796 while (ecb_expect_true (cxix >= 0))
553 { 797 {
554 PERL_CONTEXT *cx = &ccstk[cxix--]; 798 PERL_CONTEXT *cx = &ccstk[cxix--];
555 799
556 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 800 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
557 { 801 {
558 CV *cv = cx->blk_sub.cv; 802 CV *cv = cx->blk_sub.cv;
559 803
560 if (expect_true (CvDEPTH (cv))) 804 if (ecb_expect_true (CvDEPTH (cv)))
561 { 805 {
562 EXTEND (SP, 3); 806 EXTEND (SP, 3);
563 PUSHs ((SV *)CvPADLIST (cv)); 807 PUSHs ((SV *)CvPADLIST (cv));
564 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 808 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
565 PUSHs ((SV *)cv); 809 PUSHs ((SV *)cv);
… …
568 get_padlist (aTHX_ cv); 812 get_padlist (aTHX_ cv);
569 } 813 }
570 } 814 }
571 } 815 }
572 816
573 if (expect_true (top_si->si_type == PERLSI_MAIN)) 817 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
574 break; 818 break;
575 819
576 top_si = top_si->si_prev; 820 top_si = top_si->si_prev;
577 ccstk = top_si->si_cxstack; 821 ccstk = top_si->si_cxstack;
578 cxix = top_si->si_cxix; 822 cxix = top_si->si_cxix;
… …
580 824
581 PUTBACK; 825 PUTBACK;
582 } 826 }
583 827
584 /* allocate some space on the context stack for our purposes */ 828 /* allocate some space on the context stack for our purposes */
585 /* we manually unroll here, as usually 2 slots is enough */ 829 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
586 if (SLOT_COUNT >= 1) CXINC;
587 if (SLOT_COUNT >= 2) CXINC;
588 if (SLOT_COUNT >= 3) CXINC;
589 { 830 {
590 int i; 831 unsigned int i;
832
591 for (i = 3; i < SLOT_COUNT; ++i) 833 for (i = 0; i < SLOT_COUNT; ++i)
592 CXINC; 834 CXINC;
593 } 835
594 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 836 cxstack_ix -= SLOT_COUNT; /* undo allocation */
837 }
595 838
596 c->mainstack = PL_mainstack; 839 c->mainstack = PL_mainstack;
597 840
598 { 841 {
599 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 842 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
600 843
601 slot->defav = GvAV (PL_defgv); 844#if CORO_JIT
602 slot->defsv = DEFSV; 845 save_perl_slots (slot);
603 slot->errsv = ERRSV; 846#else
604 slot->irsgv = GvSV (irsgv);
605
606 #define VAR(name,type) slot->name = PL_ ## name; 847 #define VARx(name,expr,type) slot->name = expr;
607 # include "state.h" 848 # include "state.h"
608 #undef VAR 849 #undef VARx
850#endif
609 } 851 }
610} 852}
611 853
612/* 854/*
613 * allocate various perl stacks. This is almost an exact copy 855 * allocate various perl stacks. This is almost an exact copy
… …
619# define coro_init_stacks(thx) init_stacks () 861# define coro_init_stacks(thx) init_stacks ()
620#else 862#else
621static void 863static void
622coro_init_stacks (pTHX) 864coro_init_stacks (pTHX)
623{ 865{
624 PL_curstackinfo = new_stackinfo(32, 8); 866 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
625 PL_curstackinfo->si_type = PERLSI_MAIN; 867 PL_curstackinfo->si_type = PERLSI_MAIN;
626 PL_curstack = PL_curstackinfo->si_stack; 868 PL_curstack = PL_curstackinfo->si_stack;
627 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 869 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
628 870
629 PL_stack_base = AvARRAY(PL_curstack); 871 PL_stack_base = AvARRAY(PL_curstack);
… …
644#endif 886#endif
645 887
646 New(54,PL_scopestack,8,I32); 888 New(54,PL_scopestack,8,I32);
647 PL_scopestack_ix = 0; 889 PL_scopestack_ix = 0;
648 PL_scopestack_max = 8; 890 PL_scopestack_max = 8;
891#if HAS_SCOPESTACK_NAME
892 New(54,PL_scopestack_name,8,const char*);
893#endif
649 894
650 New(54,PL_savestack,24,ANY); 895 New(54,PL_savestack,24,ANY);
651 PL_savestack_ix = 0; 896 PL_savestack_ix = 0;
652 PL_savestack_max = 24; 897 PL_savestack_max = 24;
653 898
… …
681 } 926 }
682 927
683 Safefree (PL_tmps_stack); 928 Safefree (PL_tmps_stack);
684 Safefree (PL_markstack); 929 Safefree (PL_markstack);
685 Safefree (PL_scopestack); 930 Safefree (PL_scopestack);
931#if HAS_SCOPESTACK_NAME
932 Safefree (PL_scopestack_name);
933#endif
686 Safefree (PL_savestack); 934 Safefree (PL_savestack);
687#if !PERL_VERSION_ATLEAST (5,10,0) 935#if !PERL_VERSION_ATLEAST (5,10,0)
688 Safefree (PL_retstack); 936 Safefree (PL_retstack);
689#endif 937#endif
690} 938}
691 939
940#define CORO_RSS \
941 rss += sizeof (SYM (curstackinfo)); \
942 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
943 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
944 rss += SYM (tmps_max) * sizeof (SV *); \
945 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
946 rss += SYM (scopestack_max) * sizeof (I32); \
947 rss += SYM (savestack_max) * sizeof (ANY);
948
692static size_t 949static size_t
693coro_rss (pTHX_ struct coro *coro) 950coro_rss (pTHX_ struct coro *coro)
694{ 951{
695 size_t rss = sizeof (*coro); 952 size_t rss = sizeof (*coro);
696 953
697 if (coro->mainstack) 954 if (coro->mainstack)
698 { 955 {
699 perl_slots tmp_slot;
700 perl_slots *slot;
701
702 if (coro->flags & CF_RUNNING) 956 if (coro->flags & CF_RUNNING)
703 { 957 {
704 slot = &tmp_slot; 958 #define SYM(sym) PL_ ## sym
705 959 CORO_RSS;
706 #define VAR(name,type) slot->name = PL_ ## name;
707 # include "state.h"
708 #undef VAR 960 #undef SYM
709 } 961 }
710 else 962 else
711 slot = coro->slot;
712
713 if (slot)
714 { 963 {
715 rss += sizeof (slot->curstackinfo); 964 #define SYM(sym) coro->slot->sym
716 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 965 CORO_RSS;
717 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 966 #undef SYM
718 rss += slot->tmps_max * sizeof (SV *);
719 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
720 rss += slot->scopestack_max * sizeof (I32);
721 rss += slot->savestack_max * sizeof (ANY);
722
723#if !PERL_VERSION_ATLEAST (5,10,0)
724 rss += slot->retstack_max * sizeof (OP *);
725#endif
726 } 967 }
727 } 968 }
728 969
729 return rss; 970 return rss;
730} 971}
… …
743#endif 984#endif
744 985
745/* 986/*
746 * This overrides the default magic get method of %SIG elements. 987 * This overrides the default magic get method of %SIG elements.
747 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 988 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
748 * and instead of tryign to save and restore the hash elements, we just provide 989 * and instead of trying to save and restore the hash elements (extremely slow),
749 * readback here. 990 * we just provide our own readback here.
750 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
751 * not expecting this to actually change the hook. This is a potential problem
752 * when a schedule happens then, but we ignore this.
753 */ 991 */
754static int 992static int ecb_cold
755coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 993coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
756{ 994{
757 const char *s = MgPV_nolen_const (mg); 995 const char *s = MgPV_nolen_const (mg);
758 996
759 if (*s == '_') 997 if (*s == '_')
… …
763 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1001 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
764 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1002 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
765 1003
766 if (svp) 1004 if (svp)
767 { 1005 {
768 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1006 SV *ssv;
1007
1008 if (!*svp)
1009 ssv = &PL_sv_undef;
1010 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1011 ssv = sv_2mortal (newRV_inc (*svp));
1012 else
1013 ssv = *svp;
1014
1015 sv_setsv (sv, ssv);
769 return 0; 1016 return 0;
770 } 1017 }
771 } 1018 }
772 1019
773 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
774} 1021}
775 1022
776static int 1023static int ecb_cold
777coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
778{ 1025{
779 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
780 1027
781 if (*s == '_') 1028 if (*s == '_')
… …
795 } 1042 }
796 1043
797 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
798} 1045}
799 1046
800static int 1047static int ecb_cold
801coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1048coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
802{ 1049{
803 const char *s = MgPV_nolen_const (mg); 1050 const char *s = MgPV_nolen_const (mg);
804 1051
805 if (*s == '_') 1052 if (*s == '_')
… …
810 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1057 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
811 1058
812 if (svp) 1059 if (svp)
813 { 1060 {
814 SV *old = *svp; 1061 SV *old = *svp;
815 *svp = newSVsv (sv); 1062 *svp = SvOK (sv) ? newSVsv (sv) : 0;
816 SvREFCNT_dec (old); 1063 SvREFCNT_dec (old);
817 return 0; 1064 return 0;
818 } 1065 }
819 } 1066 }
820 1067
… …
832slf_check_nop (pTHX_ struct CoroSLF *frame) 1079slf_check_nop (pTHX_ struct CoroSLF *frame)
833{ 1080{
834 return 0; 1081 return 0;
835} 1082}
836 1083
837static UNOP coro_setup_op; 1084static int
1085slf_check_repeat (pTHX_ struct CoroSLF *frame)
1086{
1087 return 1;
1088}
838 1089
839static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1090static UNOP init_perl_op;
1091
1092ecb_noinline static void /* noinline to keep it out of the transfer fast path */
840coro_setup (pTHX_ struct coro *coro) 1093init_perl (pTHX_ struct coro *coro)
841{ 1094{
842 /* 1095 /*
843 * emulate part of the perl startup here. 1096 * emulate part of the perl startup here.
844 */ 1097 */
845 coro_init_stacks (aTHX); 1098 coro_init_stacks (aTHX);
846 1099
847 PL_runops = RUNOPS_DEFAULT; 1100 PL_runops = RUNOPS_DEFAULT;
848 PL_curcop = &PL_compiling; 1101 PL_curcop = &PL_compiling;
849 PL_in_eval = EVAL_NULL; 1102 PL_in_eval = EVAL_NULL;
850 PL_comppad = 0; 1103 PL_comppad = 0;
1104 PL_comppad_name = 0;
1105 PL_comppad_name_fill = 0;
1106 PL_comppad_name_floor = 0;
851 PL_curpm = 0; 1107 PL_curpm = 0;
852 PL_curpad = 0; 1108 PL_curpad = 0;
853 PL_localizing = 0; 1109 PL_localizing = 0;
854 PL_dirty = 0;
855 PL_restartop = 0; 1110 PL_restartop = 0;
856#if PERL_VERSION_ATLEAST (5,10,0) 1111#if PERL_VERSION_ATLEAST (5,10,0)
857 PL_parser = 0; 1112 PL_parser = 0;
858#endif 1113#endif
1114 PL_hints = 0;
859 1115
860 /* recreate the die/warn hooks */ 1116 /* recreate the die/warn hooks */
861 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1117 PL_diehook = SvREFCNT_inc (rv_diehook);
862 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1118 PL_warnhook = SvREFCNT_inc (rv_warnhook);
863 1119
864 GvSV (PL_defgv) = newSV (0); 1120 GvSV (PL_defgv) = newSV (0);
865 GvAV (PL_defgv) = coro->args; coro->args = 0; 1121 GvAV (PL_defgv) = coro->args; coro->args = 0;
866 GvSV (PL_errgv) = newSV (0); 1122 GvSV (PL_errgv) = newSV (0);
867 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1123 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1124 GvHV (PL_hintgv) = 0;
868 PL_rs = newSVsv (GvSV (irsgv)); 1125 PL_rs = newSVsv (GvSV (irsgv));
869 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1126 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
870 1127
871 { 1128 {
872 dSP; 1129 dSP;
… …
887 /* this newly created coroutine might be run on an existing cctx which most 1144 /* this newly created coroutine might be run on an existing cctx which most
888 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1145 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
889 */ 1146 */
890 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1147 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1148 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1149 slf_frame.destroy = 0;
892 1150
893 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1151 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
894 coro_setup_op.op_next = PL_op; 1152 init_perl_op.op_next = PL_op;
895 coro_setup_op.op_type = OP_CUSTOM; 1153 init_perl_op.op_type = OP_ENTERSUB;
896 coro_setup_op.op_ppaddr = pp_slf; 1154 init_perl_op.op_ppaddr = pp_slf;
897 /* no flags etc. required, as an init function won't be called */ 1155 /* no flags etc. required, as an init function won't be called */
898 1156
899 PL_op = (OP *)&coro_setup_op; 1157 PL_op = (OP *)&init_perl_op;
900 1158
901 /* copy throw, in case it was set before coro_setup */ 1159 /* copy throw, in case it was set before init_perl */
902 CORO_THROW = coro->except; 1160 CORO_THROW = coro->except;
903}
904 1161
1162 SWAP_SVS (coro);
1163
1164 if (ecb_expect_false (enable_times))
1165 {
1166 coro_times_update ();
1167 coro_times_sub (coro);
1168 }
1169}
1170
905static void 1171static void
906coro_destruct (pTHX_ struct coro *coro) 1172coro_unwind_stacks (pTHX)
907{ 1173{
908 if (!IN_DESTRUCT) 1174 if (!IN_DESTRUCT)
909 { 1175 {
910 /* restore all saved variables and stuff */ 1176 /* restore all saved variables and stuff */
911 LEAVE_SCOPE (0); 1177 LEAVE_SCOPE (0);
… …
919 POPSTACK_TO (PL_mainstack); 1185 POPSTACK_TO (PL_mainstack);
920 1186
921 /* unwind main stack */ 1187 /* unwind main stack */
922 dounwind (-1); 1188 dounwind (-1);
923 } 1189 }
1190}
924 1191
925 SvREFCNT_dec (GvSV (PL_defgv)); 1192static void
926 SvREFCNT_dec (GvAV (PL_defgv)); 1193destroy_perl (pTHX_ struct coro *coro)
927 SvREFCNT_dec (GvSV (PL_errgv)); 1194{
928 SvREFCNT_dec (PL_defoutgv); 1195 SV *svf [9];
929 SvREFCNT_dec (PL_rs);
930 SvREFCNT_dec (GvSV (irsgv));
931 1196
932 SvREFCNT_dec (PL_diehook);
933 SvREFCNT_dec (PL_warnhook);
934 1197 {
1198 SV *old_current = SvRV (coro_current);
1199 struct coro *current = SvSTATE (old_current);
1200
1201 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1202
1203 save_perl (aTHX_ current);
1204
1205 /* this will cause transfer_check to croak on block*/
1206 SvRV_set (coro_current, (SV *)coro->hv);
1207
1208 load_perl (aTHX_ coro);
1209
1210 coro_unwind_stacks (aTHX);
1211
1212 /* restore swapped sv's */
1213 SWAP_SVS (coro);
1214
1215 coro_destruct_stacks (aTHX);
1216
1217 /* now save some sv's to be free'd later */
1218 svf [0] = GvSV (PL_defgv);
1219 svf [1] = (SV *)GvAV (PL_defgv);
1220 svf [2] = GvSV (PL_errgv);
1221 svf [3] = (SV *)PL_defoutgv;
1222 svf [4] = PL_rs;
1223 svf [5] = GvSV (irsgv);
1224 svf [6] = (SV *)GvHV (PL_hintgv);
1225 svf [7] = PL_diehook;
1226 svf [8] = PL_warnhook;
1227 assert (9 == sizeof (svf) / sizeof (*svf));
1228
1229 SvRV_set (coro_current, old_current);
1230
1231 load_perl (aTHX_ current);
1232 }
1233
1234 {
1235 unsigned int i;
1236
1237 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1238 SvREFCNT_dec (svf [i]);
1239
935 SvREFCNT_dec (coro->saved_deffh); 1240 SvREFCNT_dec (coro->saved_deffh);
936 SvREFCNT_dec (coro->rouse_cb); 1241 SvREFCNT_dec (coro->rouse_cb);
937 1242 SvREFCNT_dec (coro->invoke_cb);
938 coro_destruct_stacks (aTHX); 1243 SvREFCNT_dec (coro->invoke_av);
1244 }
939} 1245}
940 1246
941INLINE void 1247ecb_inline void
942free_coro_mortal (pTHX) 1248free_coro_mortal (pTHX)
943{ 1249{
944 if (expect_true (coro_mortal)) 1250 if (ecb_expect_true (coro_mortal))
945 { 1251 {
946 SvREFCNT_dec (coro_mortal); 1252 SvREFCNT_dec ((SV *)coro_mortal);
947 coro_mortal = 0; 1253 coro_mortal = 0;
948 } 1254 }
949} 1255}
950 1256
951static int 1257static int
952runops_trace (pTHX) 1258runops_trace (pTHX)
953{ 1259{
954 COP *oldcop = 0; 1260 COP *oldcop = 0;
955 int oldcxix = -2; 1261 int oldcxix = -2;
956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
957 coro_cctx *cctx = coro->cctx;
958 1262
959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1263 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
960 { 1264 {
961 PERL_ASYNC_CHECK (); 1265 PERL_ASYNC_CHECK ();
962 1266
963 if (cctx->flags & CC_TRACE_ALL) 1267 if (cctx_current->flags & CC_TRACE_ALL)
964 { 1268 {
965 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1269 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
966 { 1270 {
967 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
968 SV **bot, **top; 1272 SV **bot, **top;
969 AV *av = newAV (); /* return values */ 1273 AV *av = newAV (); /* return values */
970 SV **cb; 1274 SV **cb;
… …
1007 1311
1008 if (PL_curcop != &PL_compiling) 1312 if (PL_curcop != &PL_compiling)
1009 { 1313 {
1010 SV **cb; 1314 SV **cb;
1011 1315
1012 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1316 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1013 { 1317 {
1014 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1318 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1015 1319
1016 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1320 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1017 { 1321 {
1018 runops_proc_t old_runops = PL_runops;
1019 dSP; 1322 dSP;
1020 GV *gv = CvGV (cx->blk_sub.cv); 1323 GV *gv = CvGV (cx->blk_sub.cv);
1021 SV *fullname = sv_2mortal (newSV (0)); 1324 SV *fullname = sv_2mortal (newSV (0));
1022 1325
1023 if (isGV (gv)) 1326 if (isGV (gv))
… …
1041 } 1344 }
1042 1345
1043 oldcxix = cxstack_ix; 1346 oldcxix = cxstack_ix;
1044 } 1347 }
1045 1348
1046 if (cctx->flags & CC_TRACE_LINE) 1349 if (cctx_current->flags & CC_TRACE_LINE)
1047 { 1350 {
1048 dSP; 1351 dSP;
1049 1352
1050 PL_runops = RUNOPS_DEFAULT; 1353 PL_runops = RUNOPS_DEFAULT;
1051 ENTER; 1354 ENTER;
… …
1070 1373
1071 TAINT_NOT; 1374 TAINT_NOT;
1072 return 0; 1375 return 0;
1073} 1376}
1074 1377
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame; 1378static struct CoroSLF cctx_ssl_frame;
1077 1379
1078static void 1380static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1381slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{ 1382{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0; 1383 ta->prev = 0;
1083} 1384}
1084 1385
1085static int 1386static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1387slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{ 1388{
… …
1089 1390
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1391 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091} 1392}
1092 1393
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1394/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1094static void NOINLINE 1395static void ecb_noinline
1095cctx_prepare (pTHX_ coro_cctx *cctx) 1396cctx_prepare (pTHX)
1096{ 1397{
1097 PL_top_env = &PL_start_env; 1398 PL_top_env = &PL_start_env;
1098 1399
1099 if (cctx->flags & CC_TRACE) 1400 if (cctx_current->flags & CC_TRACE)
1100 PL_runops = runops_trace; 1401 PL_runops = runops_trace;
1101 1402
1102 /* we already must be executing an SLF op, there is no other valid way 1403 /* we already must be executing an SLF op, there is no other valid way
1103 * that can lead to creation of a new cctx */ 1404 * that can lead to creation of a new cctx */
1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1405 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1406 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1106 1407
1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1408 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1108 cctx_ssl_cctx = cctx;
1109 cctx_ssl_frame = slf_frame; 1409 cctx_ssl_frame = slf_frame;
1110 1410
1111 slf_frame.prepare = slf_prepare_set_stacklevel; 1411 slf_frame.prepare = slf_prepare_set_stacklevel;
1112 slf_frame.check = slf_check_set_stacklevel; 1412 slf_frame.check = slf_check_set_stacklevel;
1113} 1413}
1114 1414
1115/* the tail of transfer: execute stuff we can only do after a transfer */ 1415/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void 1416ecb_inline void
1117transfer_tail (pTHX) 1417transfer_tail (pTHX)
1118{ 1418{
1119 free_coro_mortal (aTHX); 1419 free_coro_mortal (aTHX);
1120} 1420}
1121 1421
… …
1136 /* normally we would need to skip the entersub here */ 1436 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1437 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1438 /* PL_nop = PL_nop->op_next */
1139 1439
1140 /* inject a fake subroutine call to cctx_init */ 1440 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1441 cctx_prepare (aTHX);
1142 1442
1143 /* cctx_run is the alternative tail of transfer() */ 1443 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX); 1444 transfer_tail (aTHX);
1145 1445
1146 /* somebody or something will hit me for both perl_run and PL_restartop */ 1446 /* somebody or something will hit me for both perl_run and PL_restartop */
1147 PL_restartop = PL_op; 1447 PL_restartop = PL_op;
1148 perl_run (PL_curinterp); 1448 perl_run (PL_curinterp);
1149 /* 1449 /*
1150 * Unfortunately, there is no way to get at the return values of the 1450 * Unfortunately, there is no way to get at the return values of the
1151 * coro body here, as perl_run destroys these 1451 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1452 * runtime errors here, as this is just a random interpreter, not a thread.
1152 */ 1453 */
1153 1454
1154 /* 1455 /*
1155 * If perl-run returns we assume exit() was being called or the coro 1456 * If perl-run returns we assume exit() was being called or the coro
1156 * fell off the end, which seems to be the only valid (non-bug) 1457 * fell off the end, which seems to be the only valid (non-bug)
1157 * reason for perl_run to return. We try to exit by jumping to the 1458 * reason for perl_run to return. We try to exit by jumping to the
1158 * bootstrap-time "top" top_env, as we cannot restore the "main" 1459 * bootstrap-time "top" top_env, as we cannot restore the "main"
1159 * coroutine as Coro has no such concept 1460 * coroutine as Coro has no such concept.
1461 * This actually isn't valid with the pthread backend, but OSes requiring
1462 * that backend are too broken to do it in a standards-compliant way.
1160 */ 1463 */
1161 PL_top_env = main_top_env; 1464 PL_top_env = main_top_env;
1162 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1465 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1163 } 1466 }
1164} 1467}
1165 1468
1166static coro_cctx * 1469static coro_cctx *
1167cctx_new () 1470cctx_new (void)
1168{ 1471{
1169 coro_cctx *cctx; 1472 coro_cctx *cctx;
1170 1473
1171 ++cctx_count; 1474 ++cctx_count;
1172 New (0, cctx, 1, coro_cctx); 1475 New (0, cctx, 1, coro_cctx);
… …
1178 return cctx; 1481 return cctx;
1179} 1482}
1180 1483
1181/* create a new cctx only suitable as source */ 1484/* create a new cctx only suitable as source */
1182static coro_cctx * 1485static coro_cctx *
1183cctx_new_empty () 1486cctx_new_empty (void)
1184{ 1487{
1185 coro_cctx *cctx = cctx_new (); 1488 coro_cctx *cctx = cctx_new ();
1186 1489
1187 cctx->sptr = 0; 1490 cctx->sptr = 0;
1188 coro_create (&cctx->cctx, 0, 0, 0, 0); 1491 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1190 return cctx; 1493 return cctx;
1191} 1494}
1192 1495
1193/* create a new cctx suitable as destination/running a perl interpreter */ 1496/* create a new cctx suitable as destination/running a perl interpreter */
1194static coro_cctx * 1497static coro_cctx *
1195cctx_new_run () 1498cctx_new_run (void)
1196{ 1499{
1197 coro_cctx *cctx = cctx_new (); 1500 coro_cctx *cctx = cctx_new ();
1198 void *stack_start; 1501 void *stack_start;
1199 size_t stack_size; 1502 size_t stack_size;
1200 1503
1201#if HAVE_MMAP 1504#if HAVE_MMAP
1202 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1505 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1203 /* mmap supposedly does allocate-on-write for us */ 1506 /* mmap supposedly does allocate-on-write for us */
1204 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1507 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1205 1508
1206 if (cctx->sptr != (void *)-1) 1509 if (cctx->sptr != (void *)-1)
1207 { 1510 {
1208 #if CORO_STACKGUARD 1511 #if CORO_STACKGUARD
1209 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1512 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1241cctx_destroy (coro_cctx *cctx) 1544cctx_destroy (coro_cctx *cctx)
1242{ 1545{
1243 if (!cctx) 1546 if (!cctx)
1244 return; 1547 return;
1245 1548
1549 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1550
1246 --cctx_count; 1551 --cctx_count;
1247 coro_destroy (&cctx->cctx); 1552 coro_destroy (&cctx->cctx);
1248 1553
1249 /* coro_transfer creates new, empty cctx's */ 1554 /* coro_transfer creates new, empty cctx's */
1250 if (cctx->sptr) 1555 if (cctx->sptr)
… …
1268#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1573#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1269 1574
1270static coro_cctx * 1575static coro_cctx *
1271cctx_get (pTHX) 1576cctx_get (pTHX)
1272{ 1577{
1273 while (expect_true (cctx_first)) 1578 while (ecb_expect_true (cctx_first))
1274 { 1579 {
1275 coro_cctx *cctx = cctx_first; 1580 coro_cctx *cctx = cctx_first;
1276 cctx_first = cctx->next; 1581 cctx_first = cctx->next;
1277 --cctx_idle; 1582 --cctx_idle;
1278 1583
1279 if (expect_true (!CCTX_EXPIRED (cctx))) 1584 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1280 return cctx; 1585 return cctx;
1281 1586
1282 cctx_destroy (cctx); 1587 cctx_destroy (cctx);
1283 } 1588 }
1284 1589
… …
1289cctx_put (coro_cctx *cctx) 1594cctx_put (coro_cctx *cctx)
1290{ 1595{
1291 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1596 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1292 1597
1293 /* free another cctx if overlimit */ 1598 /* free another cctx if overlimit */
1294 if (expect_false (cctx_idle >= cctx_max_idle)) 1599 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1295 { 1600 {
1296 coro_cctx *first = cctx_first; 1601 coro_cctx *first = cctx_first;
1297 cctx_first = first->next; 1602 cctx_first = first->next;
1298 --cctx_idle; 1603 --cctx_idle;
1299 1604
… …
1310static void 1615static void
1311transfer_check (pTHX_ struct coro *prev, struct coro *next) 1616transfer_check (pTHX_ struct coro *prev, struct coro *next)
1312{ 1617{
1313 /* TODO: throwing up here is considered harmful */ 1618 /* TODO: throwing up here is considered harmful */
1314 1619
1315 if (expect_true (prev != next)) 1620 if (ecb_expect_true (prev != next))
1316 { 1621 {
1317 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1622 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1318 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1623 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1319 1624
1320 if (expect_false (next->flags & CF_RUNNING)) 1625 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1321 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1322
1323 if (expect_false (next->flags & CF_DESTROYED))
1324 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1626 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1325 1627
1326#if !PERL_VERSION_ATLEAST (5,10,0) 1628#if !PERL_VERSION_ATLEAST (5,10,0)
1327 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1629 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1328 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1630 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1329#endif 1631#endif
1330 } 1632 }
1331} 1633}
1332 1634
1333/* always use the TRANSFER macro */ 1635/* always use the TRANSFER macro */
1334static void NOINLINE /* noinline so we have a fixed stackframe */ 1636static void ecb_noinline /* noinline so we have a fixed stackframe */
1335transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1637transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1336{ 1638{
1337 dSTACKLEVEL; 1639 dSTACKLEVEL;
1338 1640
1339 /* sometimes transfer is only called to set idle_sp */ 1641 /* sometimes transfer is only called to set idle_sp */
1340 if (expect_false (!next)) 1642 if (ecb_expect_false (!prev))
1341 { 1643 {
1342 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1644 cctx_current->idle_sp = STACKLEVEL;
1343 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1645 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1344 } 1646 }
1345 else if (expect_true (prev != next)) 1647 else if (ecb_expect_true (prev != next))
1346 { 1648 {
1347 coro_cctx *prev__cctx; 1649 coro_cctx *cctx_prev;
1348 1650
1349 if (expect_false (prev->flags & CF_NEW)) 1651 if (ecb_expect_false (prev->flags & CF_NEW))
1350 { 1652 {
1351 /* create a new empty/source context */ 1653 /* create a new empty/source context */
1352 prev->cctx = cctx_new_empty ();
1353 prev->flags &= ~CF_NEW; 1654 prev->flags &= ~CF_NEW;
1354 prev->flags |= CF_RUNNING; 1655 prev->flags |= CF_RUNNING;
1355 } 1656 }
1356 1657
1357 prev->flags &= ~CF_RUNNING; 1658 prev->flags &= ~CF_RUNNING;
1358 next->flags |= CF_RUNNING; 1659 next->flags |= CF_RUNNING;
1359 1660
1360 /* first get rid of the old state */ 1661 /* first get rid of the old state */
1361 save_perl (aTHX_ prev); 1662 save_perl (aTHX_ prev);
1362 1663
1363 if (expect_false (next->flags & CF_NEW)) 1664 if (ecb_expect_false (next->flags & CF_NEW))
1364 { 1665 {
1365 /* need to start coroutine */ 1666 /* need to start coroutine */
1366 next->flags &= ~CF_NEW; 1667 next->flags &= ~CF_NEW;
1367 /* setup coroutine call */ 1668 /* setup coroutine call */
1368 coro_setup (aTHX_ next); 1669 init_perl (aTHX_ next);
1369 } 1670 }
1370 else 1671 else
1371 load_perl (aTHX_ next); 1672 load_perl (aTHX_ next);
1372 1673
1373 prev__cctx = prev->cctx;
1374
1375 /* possibly untie and reuse the cctx */ 1674 /* possibly untie and reuse the cctx */
1376 if (expect_true ( 1675 if (ecb_expect_true (
1377 prev__cctx->idle_sp == STACKLEVEL 1676 cctx_current->idle_sp == STACKLEVEL
1378 && !(prev__cctx->flags & CC_TRACE) 1677 && !(cctx_current->flags & CC_TRACE)
1379 && !force_cctx 1678 && !force_cctx
1380 )) 1679 ))
1381 { 1680 {
1382 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1681 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1383 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1682 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1384 1683
1385 prev->cctx = 0;
1386
1387 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1684 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1388 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1685 /* without this the next cctx_get might destroy the running cctx while still in use */
1389 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1686 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1390 if (!next->cctx) 1687 if (ecb_expect_true (!next->cctx))
1391 next->cctx = cctx_get (aTHX); 1688 next->cctx = cctx_get (aTHX);
1392 1689
1393 cctx_put (prev__cctx); 1690 cctx_put (cctx_current);
1394 } 1691 }
1692 else
1693 prev->cctx = cctx_current;
1395 1694
1396 ++next->usecount; 1695 ++next->usecount;
1397 1696
1398 if (expect_true (!next->cctx)) 1697 cctx_prev = cctx_current;
1399 next->cctx = cctx_get (aTHX); 1698 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1400 1699
1401 if (expect_false (prev__cctx != next->cctx)) 1700 next->cctx = 0;
1701
1702 if (ecb_expect_false (cctx_prev != cctx_current))
1402 { 1703 {
1403 prev__cctx->top_env = PL_top_env; 1704 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1705 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1706 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1707 }
1407 1708
1408 transfer_tail (aTHX); 1709 transfer_tail (aTHX);
1409 } 1710 }
1410} 1711}
… …
1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1713#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1413#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1714#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414 1715
1415/** high level stuff ********************************************************/ 1716/** high level stuff ********************************************************/
1416 1717
1718/* this function is actually Coro, not Coro::State, but we call it from here */
1719/* because it is convenient - but it hasn't been declared yet for that reason */
1417static int 1720static void
1721coro_call_on_destroy (pTHX_ struct coro *coro);
1722
1723static void
1418coro_state_destroy (pTHX_ struct coro *coro) 1724coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1725{
1420 if (coro->flags & CF_DESTROYED) 1726 if (coro->flags & CF_ZOMBIE)
1421 return 0; 1727 return;
1422 1728
1423 if (coro->on_destroy)
1424 coro->on_destroy (aTHX_ coro); 1729 slf_destroy (aTHX_ coro);
1425 1730
1426 coro->flags |= CF_DESTROYED; 1731 coro->flags |= CF_ZOMBIE;
1427 1732
1428 if (coro->flags & CF_READY) 1733 if (coro->flags & CF_READY)
1429 { 1734 {
1430 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1735 /* reduce nready, as destroying a ready coro effectively unreadies it */
1431 /* alternative: look through all ready queues and remove the coro */ 1736 /* alternative: look through all ready queues and remove the coro */
1432 --coro_nready; 1737 --coro_nready;
1433 } 1738 }
1434 else 1739 else
1435 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1740 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1436 1741
1437 if (coro->mainstack && coro->mainstack != main_mainstack) 1742 if (coro->next) coro->next->prev = coro->prev;
1438 { 1743 if (coro->prev) coro->prev->next = coro->next;
1439 struct coro temp; 1744 if (coro == coro_first) coro_first = coro->next;
1440 1745
1441 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1746 if (coro->mainstack
1442 1747 && coro->mainstack != main_mainstack
1443 save_perl (aTHX_ &temp); 1748 && coro->slot
1749 && !PL_dirty)
1444 load_perl (aTHX_ coro); 1750 destroy_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452 1751
1453 cctx_destroy (coro->cctx); 1752 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->startcv); 1753 SvREFCNT_dec (coro->startcv);
1455 SvREFCNT_dec (coro->args); 1754 SvREFCNT_dec (coro->args);
1755 SvREFCNT_dec (coro->swap_sv);
1456 SvREFCNT_dec (CORO_THROW); 1756 SvREFCNT_dec (CORO_THROW);
1457 1757
1458 if (coro->next) coro->next->prev = coro->prev; 1758 coro_call_on_destroy (aTHX_ coro);
1459 if (coro->prev) coro->prev->next = coro->next;
1460 if (coro == coro_first) coro_first = coro->next;
1461 1759
1462 return 1; 1760 /* more destruction mayhem in coro_state_free */
1463} 1761}
1464 1762
1465static int 1763static int
1466coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1764coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1467{ 1765{
1468 struct coro *coro = (struct coro *)mg->mg_ptr; 1766 struct coro *coro = (struct coro *)mg->mg_ptr;
1469 mg->mg_ptr = 0; 1767 mg->mg_ptr = 0;
1470 1768
1471 coro->hv = 0;
1472
1473 if (--coro->refcnt < 0)
1474 {
1475 coro_state_destroy (aTHX_ coro); 1769 coro_state_destroy (aTHX_ coro);
1770 SvREFCNT_dec (coro->on_destroy);
1771 SvREFCNT_dec (coro->status);
1772
1476 Safefree (coro); 1773 Safefree (coro);
1477 }
1478 1774
1479 return 0; 1775 return 0;
1480} 1776}
1481 1777
1482static int 1778static int ecb_cold
1483coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1779coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1484{ 1780{
1485 struct coro *coro = (struct coro *)mg->mg_ptr; 1781 /* called when perl clones the current process the slow way (windows process emulation) */
1486 1782 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1487 ++coro->refcnt; 1783 mg->mg_ptr = 0;
1784 mg->mg_virtual = 0;
1488 1785
1489 return 0; 1786 return 0;
1490} 1787}
1491 1788
1492static MGVTBL coro_state_vtbl = { 1789static MGVTBL coro_state_vtbl = {
… …
1515 1812
1516 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1813 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1517 TRANSFER (ta, 1); 1814 TRANSFER (ta, 1);
1518} 1815}
1519 1816
1520/*****************************************************************************/
1521/* gensub: simple closure generation utility */
1522
1523#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1524
1525/* create a closure from XS, returns a code reference */
1526/* the arg can be accessed via GENSUB_ARG from the callback */
1527/* the callback must use dXSARGS/XSRETURN */
1528static SV *
1529gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1530{
1531 CV *cv = (CV *)newSV (0);
1532
1533 sv_upgrade ((SV *)cv, SVt_PVCV);
1534
1535 CvANON_on (cv);
1536 CvISXSUB_on (cv);
1537 CvXSUB (cv) = xsub;
1538 GENSUB_ARG = arg;
1539
1540 return newRV_noinc ((SV *)cv);
1541}
1542
1543/** Coro ********************************************************************/ 1817/** Coro ********************************************************************/
1544 1818
1545INLINE void 1819ecb_inline void
1546coro_enq (pTHX_ struct coro *coro) 1820coro_enq (pTHX_ struct coro *coro)
1547{ 1821{
1548 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1822 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1549}
1550 1823
1551INLINE SV * 1824 SvREFCNT_inc_NN (coro->hv);
1825
1826 coro->next_ready = 0;
1827 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1828 ready [1] = coro;
1829}
1830
1831ecb_inline struct coro *
1552coro_deq (pTHX) 1832coro_deq (pTHX)
1553{ 1833{
1554 int prio; 1834 int prio;
1555 1835
1556 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1836 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1557 if (AvFILLp (coro_ready [prio]) >= 0) 1837 {
1558 return av_shift (coro_ready [prio]); 1838 struct coro **ready = coro_ready [prio];
1839
1840 if (ready [0])
1841 {
1842 struct coro *coro = ready [0];
1843 ready [0] = coro->next_ready;
1844 return coro;
1845 }
1846 }
1559 1847
1560 return 0; 1848 return 0;
1849}
1850
1851static void
1852invoke_sv_ready_hook_helper (void)
1853{
1854 dTHX;
1855 dSP;
1856
1857 ENTER;
1858 SAVETMPS;
1859
1860 PUSHMARK (SP);
1861 PUTBACK;
1862 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1863
1864 FREETMPS;
1865 LEAVE;
1561} 1866}
1562 1867
1563static int 1868static int
1564api_ready (pTHX_ SV *coro_sv) 1869api_ready (pTHX_ SV *coro_sv)
1565{ 1870{
1566 struct coro *coro;
1567 SV *sv_hook;
1568 void (*xs_hook)(void);
1569
1570 if (SvROK (coro_sv))
1571 coro_sv = SvRV (coro_sv);
1572
1573 coro = SvSTATE (coro_sv); 1871 struct coro *coro = SvSTATE (coro_sv);
1574 1872
1575 if (coro->flags & CF_READY) 1873 if (coro->flags & CF_READY)
1576 return 0; 1874 return 0;
1577 1875
1578 coro->flags |= CF_READY; 1876 coro->flags |= CF_READY;
1579 1877
1580 sv_hook = coro_nready ? 0 : coro_readyhook;
1581 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1582
1583 coro_enq (aTHX_ coro); 1878 coro_enq (aTHX_ coro);
1584 ++coro_nready;
1585 1879
1586 if (sv_hook) 1880 if (!coro_nready++)
1587 { 1881 if (coroapi.readyhook)
1588 dSP; 1882 coroapi.readyhook ();
1589
1590 ENTER;
1591 SAVETMPS;
1592
1593 PUSHMARK (SP);
1594 PUTBACK;
1595 call_sv (sv_hook, G_VOID | G_DISCARD);
1596
1597 FREETMPS;
1598 LEAVE;
1599 }
1600
1601 if (xs_hook)
1602 xs_hook ();
1603 1883
1604 return 1; 1884 return 1;
1605} 1885}
1606 1886
1607static int 1887static int
1608api_is_ready (pTHX_ SV *coro_sv) 1888api_is_ready (pTHX_ SV *coro_sv)
1609{ 1889{
1610 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1890 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1611} 1891}
1612 1892
1613INLINE void 1893/* expects to own a reference to next->hv */
1894ecb_inline void
1614prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1895prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1615{ 1896{
1616 SV *prev_sv, *next_sv;
1617
1618 for (;;)
1619 {
1620 next_sv = coro_deq (aTHX);
1621
1622 /* nothing to schedule: call the idle handler */
1623 if (expect_false (!next_sv))
1624 {
1625 dSP;
1626
1627 ENTER;
1628 SAVETMPS;
1629
1630 PUSHMARK (SP);
1631 PUTBACK;
1632 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1633
1634 FREETMPS;
1635 LEAVE;
1636 continue;
1637 }
1638
1639 ta->next = SvSTATE_hv (next_sv);
1640
1641 /* cannot transfer to destroyed coros, skip and look for next */
1642 if (expect_false (ta->next->flags & CF_DESTROYED))
1643 {
1644 SvREFCNT_dec (next_sv);
1645 /* coro_nready has already been taken care of by destroy */
1646 continue;
1647 }
1648
1649 --coro_nready;
1650 break;
1651 }
1652
1653 /* free this only after the transfer */
1654 prev_sv = SvRV (coro_current); 1897 SV *prev_sv = SvRV (coro_current);
1898
1655 ta->prev = SvSTATE_hv (prev_sv); 1899 ta->prev = SvSTATE_hv (prev_sv);
1900 ta->next = next;
1901
1656 TRANSFER_CHECK (*ta); 1902 TRANSFER_CHECK (*ta);
1657 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1903
1658 ta->next->flags &= ~CF_READY;
1659 SvRV_set (coro_current, next_sv); 1904 SvRV_set (coro_current, (SV *)next->hv);
1660 1905
1661 free_coro_mortal (aTHX); 1906 free_coro_mortal (aTHX);
1662 coro_mortal = prev_sv; 1907 coro_mortal = prev_sv;
1663} 1908}
1664 1909
1665INLINE void 1910static void
1911prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1912{
1913 for (;;)
1914 {
1915 struct coro *next = coro_deq (aTHX);
1916
1917 if (ecb_expect_true (next))
1918 {
1919 /* cannot transfer to destroyed coros, skip and look for next */
1920 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1921 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1922 else
1923 {
1924 next->flags &= ~CF_READY;
1925 --coro_nready;
1926
1927 prepare_schedule_to (aTHX_ ta, next);
1928 break;
1929 }
1930 }
1931 else
1932 {
1933 /* nothing to schedule: call the idle handler */
1934 if (SvROK (sv_idle)
1935 && SvOBJECT (SvRV (sv_idle)))
1936 {
1937 if (SvRV (sv_idle) == SvRV (coro_current))
1938 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1939
1940 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1941 api_ready (aTHX_ SvRV (sv_idle));
1942 --coro_nready;
1943 }
1944 else
1945 {
1946 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1947 dSP;
1948
1949 ENTER;
1950 SAVETMPS;
1951
1952 PUSHMARK (SP);
1953 PUTBACK;
1954 call_sv (sv_idle, G_VOID | G_DISCARD);
1955
1956 FREETMPS;
1957 LEAVE;
1958 }
1959 }
1960 }
1961}
1962
1963ecb_inline void
1666prepare_cede (pTHX_ struct coro_transfer_args *ta) 1964prepare_cede (pTHX_ struct coro_transfer_args *ta)
1667{ 1965{
1668 api_ready (aTHX_ coro_current); 1966 api_ready (aTHX_ coro_current);
1669 prepare_schedule (aTHX_ ta); 1967 prepare_schedule (aTHX_ ta);
1670} 1968}
1671 1969
1672INLINE void 1970ecb_inline void
1673prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1971prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1674{ 1972{
1675 SV *prev = SvRV (coro_current); 1973 SV *prev = SvRV (coro_current);
1676 1974
1677 if (coro_nready) 1975 if (coro_nready)
… …
1690 1988
1691 prepare_schedule (aTHX_ &ta); 1989 prepare_schedule (aTHX_ &ta);
1692 TRANSFER (ta, 1); 1990 TRANSFER (ta, 1);
1693} 1991}
1694 1992
1993static void
1994api_schedule_to (pTHX_ SV *coro_sv)
1995{
1996 struct coro_transfer_args ta;
1997 struct coro *next = SvSTATE (coro_sv);
1998
1999 SvREFCNT_inc_NN (coro_sv);
2000 prepare_schedule_to (aTHX_ &ta, next);
2001}
2002
1695static int 2003static int
1696api_cede (pTHX) 2004api_cede (pTHX)
1697{ 2005{
1698 struct coro_transfer_args ta; 2006 struct coro_transfer_args ta;
1699 2007
1700 prepare_cede (aTHX_ &ta); 2008 prepare_cede (aTHX_ &ta);
1701 2009
1702 if (expect_true (ta.prev != ta.next)) 2010 if (ecb_expect_true (ta.prev != ta.next))
1703 { 2011 {
1704 TRANSFER (ta, 1); 2012 TRANSFER (ta, 1);
1705 return 1; 2013 return 1;
1706 } 2014 }
1707 else 2015 else
… …
1726static void 2034static void
1727api_trace (pTHX_ SV *coro_sv, int flags) 2035api_trace (pTHX_ SV *coro_sv, int flags)
1728{ 2036{
1729 struct coro *coro = SvSTATE (coro_sv); 2037 struct coro *coro = SvSTATE (coro_sv);
1730 2038
2039 if (coro->flags & CF_RUNNING)
2040 croak ("cannot enable tracing on a running coroutine, caught");
2041
1731 if (flags & CC_TRACE) 2042 if (flags & CC_TRACE)
1732 { 2043 {
1733 if (!coro->cctx) 2044 if (!coro->cctx)
1734 coro->cctx = cctx_new_run (); 2045 coro->cctx = cctx_new_run ();
1735 else if (!(coro->cctx->flags & CC_TRACE)) 2046 else if (!(coro->cctx->flags & CC_TRACE))
1736 croak ("cannot enable tracing on coroutine with custom stack,"); 2047 croak ("cannot enable tracing on coroutine with custom stack, caught");
1737 2048
1738 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2049 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1739 } 2050 }
1740 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2051 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1741 { 2052 {
… …
1746 else 2057 else
1747 coro->slot->runops = RUNOPS_DEFAULT; 2058 coro->slot->runops = RUNOPS_DEFAULT;
1748 } 2059 }
1749} 2060}
1750 2061
2062static void
2063coro_push_av (pTHX_ AV *av, I32 gimme_v)
2064{
2065 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2066 {
2067 dSP;
2068
2069 if (gimme_v == G_SCALAR)
2070 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2071 else
2072 {
2073 int i;
2074 EXTEND (SP, AvFILLp (av) + 1);
2075
2076 for (i = 0; i <= AvFILLp (av); ++i)
2077 PUSHs (AvARRAY (av)[i]);
2078 }
2079
2080 PUTBACK;
2081 }
2082}
2083
2084static void
2085coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2086{
2087 if (!coro->on_destroy)
2088 coro->on_destroy = newAV ();
2089
2090 av_push (coro->on_destroy, cb);
2091}
2092
2093static void
2094slf_destroy_join (pTHX_ struct CoroSLF *frame)
2095{
2096 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2097}
2098
2099static int
2100slf_check_join (pTHX_ struct CoroSLF *frame)
2101{
2102 struct coro *coro = (struct coro *)frame->data;
2103
2104 if (!coro->status)
2105 return 1;
2106
2107 frame->destroy = 0;
2108
2109 coro_push_av (aTHX_ coro->status, GIMME_V);
2110
2111 SvREFCNT_dec ((SV *)coro->hv);
2112
2113 return 0;
2114}
2115
2116static void
2117slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2118{
2119 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2120
2121 if (items > 1)
2122 croak ("join called with too many arguments");
2123
2124 if (coro->status)
2125 frame->prepare = prepare_nop;
2126 else
2127 {
2128 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2129 frame->prepare = prepare_schedule;
2130 }
2131
2132 frame->check = slf_check_join;
2133 frame->destroy = slf_destroy_join;
2134 frame->data = (void *)coro;
2135 SvREFCNT_inc (coro->hv);
2136}
2137
2138static void
2139coro_call_on_destroy (pTHX_ struct coro *coro)
2140{
2141 AV *od = coro->on_destroy;
2142
2143 if (!od)
2144 return;
2145
2146 while (AvFILLp (od) >= 0)
2147 {
2148 SV *cb = sv_2mortal (av_pop (od));
2149
2150 /* coro hv's (and only hv's at the moment) are supported as well */
2151 if (SvSTATEhv_p (aTHX_ cb))
2152 api_ready (aTHX_ cb);
2153 else
2154 {
2155 dSP; /* don't disturb outer sp */
2156 PUSHMARK (SP);
2157
2158 if (coro->status)
2159 {
2160 PUTBACK;
2161 coro_push_av (aTHX_ coro->status, G_ARRAY);
2162 SPAGAIN;
2163 }
2164
2165 PUTBACK;
2166 call_sv (cb, G_VOID | G_DISCARD);
2167 }
2168 }
2169}
2170
2171static void
2172coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2173{
2174 AV *av;
2175
2176 if (coro->status)
2177 {
2178 av = coro->status;
2179 av_clear (av);
2180 }
2181 else
2182 av = coro->status = newAV ();
2183
2184 /* items are actually not so common, so optimise for this case */
2185 if (items)
2186 {
2187 int i;
2188
2189 av_extend (av, items - 1);
2190
2191 for (i = 0; i < items; ++i)
2192 av_push (av, SvREFCNT_inc_NN (arg [i]));
2193 }
2194}
2195
2196static void
2197slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2198{
2199 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2200 api_ready (aTHX_ sv_manager);
2201
2202 frame->prepare = prepare_schedule;
2203 frame->check = slf_check_repeat;
2204
2205 /* as a minor optimisation, we could unwind all stacks here */
2206 /* but that puts extra pressure on pp_slf, and is not worth much */
2207 /*coro_unwind_stacks (aTHX);*/
2208}
2209
2210static void
2211slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2212{
2213 HV *coro_hv = (HV *)SvRV (coro_current);
2214
2215 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2216 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2217}
2218
2219static void
2220slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2221{
2222 HV *coro_hv;
2223 struct coro *coro;
2224
2225 if (items <= 0)
2226 croak ("Coro::cancel called without coro object,");
2227
2228 coro = SvSTATE (arg [0]);
2229 coro_hv = coro->hv;
2230
2231 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2232
2233 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2234 {
2235 /* coro currently busy cancelling something, so just notify it */
2236 coro->slf_frame.data = (void *)coro;
2237
2238 frame->prepare = prepare_nop;
2239 frame->check = slf_check_nop;
2240 }
2241 else if (coro_hv == (HV *)SvRV (coro_current))
2242 {
2243 /* cancelling the current coro is allowed, and equals terminate */
2244 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2245 }
2246 else
2247 {
2248 struct coro *self = SvSTATE_current;
2249
2250 /* otherwise we cancel directly, purely for speed reasons
2251 * unfortunately, this requires some magic trickery, as
2252 * somebody else could cancel us, so we have to fight the cancellation.
2253 * this is ugly, and hopefully fully worth the extra speed.
2254 * besides, I can't get the slow-but-safe version working...
2255 */
2256 slf_frame.data = 0;
2257 self->flags |= CF_NOCANCEL;
2258 coro_state_destroy (aTHX_ coro);
2259 self->flags &= ~CF_NOCANCEL;
2260
2261 if (slf_frame.data)
2262 {
2263 /* while we were busy we have been cancelled, so terminate */
2264 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2265 }
2266 else
2267 {
2268 frame->prepare = prepare_nop;
2269 frame->check = slf_check_nop;
2270 }
2271 }
2272}
2273
2274static int
2275slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2276{
2277 frame->prepare = 0;
2278 coro_unwind_stacks (aTHX);
2279
2280 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2281
2282 return 1;
2283}
2284
2285static int
2286safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2287{
2288 if (coro->cctx)
2289 croak ("coro inside C callback, unable to cancel at this time, caught");
2290
2291 if (coro->flags & CF_NEW)
2292 {
2293 coro_set_status (aTHX_ coro, arg, items);
2294 coro_state_destroy (aTHX_ coro);
2295 }
2296 else
2297 {
2298 if (!coro->slf_frame.prepare)
2299 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2300
2301 slf_destroy (aTHX_ coro);
2302
2303 coro_set_status (aTHX_ coro, arg, items);
2304 coro->slf_frame.prepare = prepare_nop;
2305 coro->slf_frame.check = slf_check_safe_cancel;
2306
2307 api_ready (aTHX_ (SV *)coro->hv);
2308 }
2309
2310 return 1;
2311}
2312
2313/*****************************************************************************/
2314/* async pool handler */
2315
2316static int
2317slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2318{
2319 HV *hv = (HV *)SvRV (coro_current);
2320 struct coro *coro = (struct coro *)frame->data;
2321
2322 if (!coro->invoke_cb)
2323 return 1; /* loop till we have invoke */
2324 else
2325 {
2326 hv_store (hv, "desc", sizeof ("desc") - 1,
2327 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2328
2329 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2330
2331 {
2332 dSP;
2333 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2334 PUTBACK;
2335 }
2336
2337 SvREFCNT_dec (GvAV (PL_defgv));
2338 GvAV (PL_defgv) = coro->invoke_av;
2339 coro->invoke_av = 0;
2340
2341 return 0;
2342 }
2343}
2344
2345static void
2346slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2347{
2348 HV *hv = (HV *)SvRV (coro_current);
2349 struct coro *coro = SvSTATE_hv ((SV *)hv);
2350
2351 if (ecb_expect_true (coro->saved_deffh))
2352 {
2353 /* subsequent iteration */
2354 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2355 coro->saved_deffh = 0;
2356
2357 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2358 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2359 {
2360 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2361 return;
2362 }
2363 else
2364 {
2365 av_clear (GvAV (PL_defgv));
2366 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2367
2368 coro->prio = 0;
2369
2370 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2371 api_trace (aTHX_ coro_current, 0);
2372
2373 frame->prepare = prepare_schedule;
2374 av_push (av_async_pool, SvREFCNT_inc (hv));
2375 }
2376 }
2377 else
2378 {
2379 /* first iteration, simply fall through */
2380 frame->prepare = prepare_nop;
2381 }
2382
2383 frame->check = slf_check_pool_handler;
2384 frame->data = (void *)coro;
2385}
2386
1751/*****************************************************************************/ 2387/*****************************************************************************/
1752/* rouse callback */ 2388/* rouse callback */
1753 2389
1754#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2390#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1755 2391
1756static void 2392static void
1757coro_rouse_callback (pTHX_ CV *cv) 2393coro_rouse_callback (pTHX_ CV *cv)
1758{ 2394{
1759 dXSARGS; 2395 dXSARGS;
1760 SV *data = (SV *)GENSUB_ARG; 2396 SV *data = (SV *)S_GENSUB_ARG;
1761 2397
1762 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2398 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1763 { 2399 {
1764 /* first call, set args */ 2400 /* first call, set args */
1765 int i; 2401 SV *coro = SvRV (data);
1766 AV *av = newAV (); 2402 AV *av = newAV ();
1767 SV *coro = SvRV (data);
1768 2403
1769 SvRV_set (data, (SV *)av); 2404 SvRV_set (data, (SV *)av);
1770 api_ready (aTHX_ coro);
1771 SvREFCNT_dec (coro);
1772 2405
1773 /* better take a full copy of the arguments */ 2406 /* better take a full copy of the arguments */
1774 while (items--) 2407 while (items--)
1775 av_store (av, items, newSVsv (ST (items))); 2408 av_store (av, items, newSVsv (ST (items)));
2409
2410 api_ready (aTHX_ coro);
2411 SvREFCNT_dec (coro);
1776 } 2412 }
1777 2413
1778 XSRETURN_EMPTY; 2414 XSRETURN_EMPTY;
1779} 2415}
1780 2416
… …
1797 2433
1798 EXTEND (SP, AvFILLp (av) + 1); 2434 EXTEND (SP, AvFILLp (av) + 1);
1799 for (i = 0; i <= AvFILLp (av); ++i) 2435 for (i = 0; i <= AvFILLp (av); ++i)
1800 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2436 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1801 2437
1802 /* we have stolen the elements, so ste length to zero and free */ 2438 /* we have stolen the elements, so set length to zero and free */
1803 AvFILLp (av) = -1; 2439 AvFILLp (av) = -1;
1804 av_undef (av); 2440 av_undef (av);
1805 2441
1806 PUTBACK; 2442 PUTBACK;
1807 } 2443 }
… …
1831 || SvTYPE (SvRV (cb)) != SVt_PVCV 2467 || SvTYPE (SvRV (cb)) != SVt_PVCV
1832 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2468 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1833 croak ("Coro::rouse_wait called with illegal callback argument,"); 2469 croak ("Coro::rouse_wait called with illegal callback argument,");
1834 2470
1835 { 2471 {
1836 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2472 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1837 SV *data = (SV *)GENSUB_ARG; 2473 SV *data = (SV *)S_GENSUB_ARG;
1838 2474
1839 frame->data = (void *)data; 2475 frame->data = (void *)data;
1840 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2476 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1841 frame->check = slf_check_rouse_wait; 2477 frame->check = slf_check_rouse_wait;
1842 } 2478 }
… …
1846coro_new_rouse_cb (pTHX) 2482coro_new_rouse_cb (pTHX)
1847{ 2483{
1848 HV *hv = (HV *)SvRV (coro_current); 2484 HV *hv = (HV *)SvRV (coro_current);
1849 struct coro *coro = SvSTATE_hv (hv); 2485 struct coro *coro = SvSTATE_hv (hv);
1850 SV *data = newRV_inc ((SV *)hv); 2486 SV *data = newRV_inc ((SV *)hv);
1851 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2487 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1852 2488
1853 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2489 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1854 SvREFCNT_dec (data); /* magicext increases the refcount */ 2490 SvREFCNT_dec (data); /* magicext increases the refcount */
1855 2491
1856 SvREFCNT_dec (coro->rouse_cb); 2492 SvREFCNT_dec (coro->rouse_cb);
… …
1914 frame->prepare = prepare_schedule; 2550 frame->prepare = prepare_schedule;
1915 frame->check = slf_check_nop; 2551 frame->check = slf_check_nop;
1916} 2552}
1917 2553
1918static void 2554static void
2555slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2556{
2557 struct coro *next = (struct coro *)slf_frame.data;
2558
2559 SvREFCNT_inc_NN (next->hv);
2560 prepare_schedule_to (aTHX_ ta, next);
2561}
2562
2563static void
2564slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2565{
2566 if (!items)
2567 croak ("Coro::schedule_to expects a coroutine argument, caught");
2568
2569 frame->data = (void *)SvSTATE (arg [0]);
2570 frame->prepare = slf_prepare_schedule_to;
2571 frame->check = slf_check_nop;
2572}
2573
2574static void
2575slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2576{
2577 api_ready (aTHX_ SvRV (coro_current));
2578
2579 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2580}
2581
2582static void
1919slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2583slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1920{ 2584{
1921 frame->prepare = prepare_cede; 2585 frame->prepare = prepare_cede;
1922 frame->check = slf_check_nop; 2586 frame->check = slf_check_nop;
1923} 2587}
… …
1925static void 2589static void
1926slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2590slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1927{ 2591{
1928 frame->prepare = prepare_cede_notself; 2592 frame->prepare = prepare_cede_notself;
1929 frame->check = slf_check_nop; 2593 frame->check = slf_check_nop;
2594}
2595
2596/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2597static void
2598slf_destroy (pTHX_ struct coro *coro)
2599{
2600 /* this callback is reserved for slf functions needing to do cleanup */
2601 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2602 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2603
2604 /*
2605 * The on_destroy above most likely is from an SLF call.
2606 * Since by definition the SLF call will not finish when we destroy
2607 * the coro, we will have to force-finish it here, otherwise
2608 * cleanup functions cannot call SLF functions.
2609 */
2610 coro->slf_frame.prepare = 0;
1930} 2611}
1931 2612
1932/* 2613/*
1933 * these not obviously related functions are all rolled into one 2614 * these not obviously related functions are all rolled into one
1934 * function to increase chances that they all will call transfer with the same 2615 * function to increase chances that they all will call transfer with the same
… …
1941 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2622 I32 checkmark; /* mark SP to see how many elements check has pushed */
1942 2623
1943 /* set up the slf frame, unless it has already been set-up */ 2624 /* set up the slf frame, unless it has already been set-up */
1944 /* the latter happens when a new coro has been started */ 2625 /* the latter happens when a new coro has been started */
1945 /* or when a new cctx was attached to an existing coroutine */ 2626 /* or when a new cctx was attached to an existing coroutine */
1946 if (expect_true (!slf_frame.prepare)) 2627 if (ecb_expect_true (!slf_frame.prepare))
1947 { 2628 {
1948 /* first iteration */ 2629 /* first iteration */
1949 dSP; 2630 dSP;
1950 SV **arg = PL_stack_base + TOPMARK + 1; 2631 SV **arg = PL_stack_base + TOPMARK + 1;
1951 int items = SP - arg; /* args without function object */ 2632 int items = SP - arg; /* args without function object */
… …
1992 while (slf_frame.check (aTHX_ &slf_frame)); 2673 while (slf_frame.check (aTHX_ &slf_frame));
1993 2674
1994 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2675 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1995 2676
1996 /* exception handling */ 2677 /* exception handling */
1997 if (expect_false (CORO_THROW)) 2678 if (ecb_expect_false (CORO_THROW))
1998 { 2679 {
1999 SV *exception = sv_2mortal (CORO_THROW); 2680 SV *exception = sv_2mortal (CORO_THROW);
2000 2681
2001 CORO_THROW = 0; 2682 CORO_THROW = 0;
2002 sv_setsv (ERRSV, exception); 2683 sv_setsv (ERRSV, exception);
2003 croak (0); 2684 croak (0);
2004 } 2685 }
2005 2686
2006 /* return value handling - mostly like entersub */ 2687 /* return value handling - mostly like entersub */
2007 /* make sure we put something on the stack in scalar context */ 2688 /* make sure we put something on the stack in scalar context */
2008 if (GIMME_V == G_SCALAR) 2689 if (GIMME_V == G_SCALAR
2690 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2009 { 2691 {
2010 dSP; 2692 dSP;
2011 SV **bot = PL_stack_base + checkmark; 2693 SV **bot = PL_stack_base + checkmark;
2012 2694
2013 if (sp == bot) /* too few, push undef */ 2695 if (sp == bot) /* too few, push undef */
2014 bot [1] = &PL_sv_undef; 2696 bot [1] = &PL_sv_undef;
2015 else if (sp != bot + 1) /* too many, take last one */ 2697 else /* too many, take last one */
2016 bot [1] = *sp; 2698 bot [1] = *sp;
2017 2699
2018 SP = bot + 1; 2700 SP = bot + 1;
2019 2701
2020 PUTBACK; 2702 PUTBACK;
… …
2053 if (PL_op->op_flags & OPf_STACKED) 2735 if (PL_op->op_flags & OPf_STACKED)
2054 { 2736 {
2055 if (items > slf_arga) 2737 if (items > slf_arga)
2056 { 2738 {
2057 slf_arga = items; 2739 slf_arga = items;
2058 free (slf_argv); 2740 Safefree (slf_argv);
2059 slf_argv = malloc (slf_arga * sizeof (SV *)); 2741 New (0, slf_argv, slf_arga, SV *);
2060 } 2742 }
2061 2743
2062 slf_argc = items; 2744 slf_argc = items;
2063 2745
2064 for (i = 0; i < items; ++i) 2746 for (i = 0; i < items; ++i)
… …
2066 } 2748 }
2067 else 2749 else
2068 slf_argc = 0; 2750 slf_argc = 0;
2069 2751
2070 PL_op->op_ppaddr = pp_slf; 2752 PL_op->op_ppaddr = pp_slf;
2071 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2753 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2072 2754
2073 PL_op = (OP *)&slf_restore; 2755 PL_op = (OP *)&slf_restore;
2756}
2757
2758/*****************************************************************************/
2759/* dynamic wind */
2760
2761static void
2762on_enterleave_call (pTHX_ SV *cb)
2763{
2764 dSP;
2765
2766 PUSHSTACK;
2767
2768 PUSHMARK (SP);
2769 PUTBACK;
2770 call_sv (cb, G_VOID | G_DISCARD);
2771 SPAGAIN;
2772
2773 POPSTACK;
2774}
2775
2776static SV *
2777coro_avp_pop_and_free (pTHX_ AV **avp)
2778{
2779 AV *av = *avp;
2780 SV *res = av_pop (av);
2781
2782 if (AvFILLp (av) < 0)
2783 {
2784 *avp = 0;
2785 SvREFCNT_dec (av);
2786 }
2787
2788 return res;
2789}
2790
2791static void
2792coro_pop_on_enter (pTHX_ void *coro)
2793{
2794 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2795 SvREFCNT_dec (cb);
2796}
2797
2798static void
2799coro_pop_on_leave (pTHX_ void *coro)
2800{
2801 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2802 on_enterleave_call (aTHX_ sv_2mortal (cb));
2074} 2803}
2075 2804
2076/*****************************************************************************/ 2805/*****************************************************************************/
2077/* PerlIO::cede */ 2806/* PerlIO::cede */
2078 2807
… …
2080{ 2809{
2081 PerlIOBuf base; 2810 PerlIOBuf base;
2082 NV next, every; 2811 NV next, every;
2083} PerlIOCede; 2812} PerlIOCede;
2084 2813
2085static IV 2814static IV ecb_cold
2086PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2815PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2087{ 2816{
2088 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2817 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2089 2818
2090 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2819 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2091 self->next = nvtime () + self->every; 2820 self->next = nvtime () + self->every;
2092 2821
2093 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2822 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2094} 2823}
2095 2824
2096static SV * 2825static SV * ecb_cold
2097PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2826PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2098{ 2827{
2099 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2828 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2100 2829
2101 return newSVnv (self->every); 2830 return newSVnv (self->every);
… …
2152/* Coro::Semaphore & Coro::Signal */ 2881/* Coro::Semaphore & Coro::Signal */
2153 2882
2154static SV * 2883static SV *
2155coro_waitarray_new (pTHX_ int count) 2884coro_waitarray_new (pTHX_ int count)
2156{ 2885{
2157 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2886 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2158 AV *av = newAV (); 2887 AV *av = newAV ();
2159 SV **ary; 2888 SV **ary;
2160 2889
2161 /* unfortunately, building manually saves memory */ 2890 /* unfortunately, building manually saves memory */
2162 Newx (ary, 2, SV *); 2891 Newx (ary, 2, SV *);
2163 AvALLOC (av) = ary; 2892 AvALLOC (av) = ary;
2893#if PERL_VERSION_ATLEAST (5,10,0)
2164 /*AvARRAY (av) = ary;*/ 2894 AvARRAY (av) = ary;
2895#else
2165 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2896 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2897 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2898 SvPVX ((SV *)av) = (char *)ary;
2899#endif
2166 AvMAX (av) = 1; 2900 AvMAX (av) = 1;
2167 AvFILLp (av) = 0; 2901 AvFILLp (av) = 0;
2168 ary [0] = newSViv (count); 2902 ary [0] = newSViv (count);
2169 2903
2170 return newRV_noinc ((SV *)av); 2904 return newRV_noinc ((SV *)av);
… …
2208 SvREFCNT_dec (cb); 2942 SvREFCNT_dec (cb);
2209 } 2943 }
2210} 2944}
2211 2945
2212static void 2946static void
2213coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2947coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2214{ 2948{
2215 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2949 /* call $sem->adjust (0) to possibly wake up some other waiters */
2216 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2950 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2217} 2951}
2218 2952
2219static int 2953static int
2220slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2954slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2221{ 2955{
2222 AV *av = (AV *)frame->data; 2956 AV *av = (AV *)frame->data;
2223 SV *count_sv = AvARRAY (av)[0]; 2957 SV *count_sv = AvARRAY (av)[0];
2958 SV *coro_hv = SvRV (coro_current);
2224 2959
2225 /* if we are about to throw, don't actually acquire the lock, just throw */ 2960 /* if we are about to throw, don't actually acquire the lock, just throw */
2226 if (CORO_THROW) 2961 if (CORO_THROW)
2227 return 0; 2962 return 0;
2228 else if (SvIVX (count_sv) > 0) 2963 else if (SvIVX (count_sv) > 0)
2229 { 2964 {
2230 SvSTATE_current->on_destroy = 0; 2965 frame->destroy = 0;
2231 2966
2232 if (acquire) 2967 if (acquire)
2233 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2968 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2234 else 2969 else
2235 coro_semaphore_adjust (aTHX_ av, 0); 2970 coro_semaphore_adjust (aTHX_ av, 0);
… …
2240 { 2975 {
2241 int i; 2976 int i;
2242 /* if we were woken up but can't down, we look through the whole */ 2977 /* if we were woken up but can't down, we look through the whole */
2243 /* waiters list and only add us if we aren't in there already */ 2978 /* waiters list and only add us if we aren't in there already */
2244 /* this avoids some degenerate memory usage cases */ 2979 /* this avoids some degenerate memory usage cases */
2245 2980 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2246 for (i = 1; i <= AvFILLp (av); ++i)
2247 if (AvARRAY (av)[i] == SvRV (coro_current)) 2981 if (AvARRAY (av)[i] == coro_hv)
2248 return 1; 2982 return 1;
2249 2983
2250 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2984 av_push (av, SvREFCNT_inc (coro_hv));
2251 return 1; 2985 return 1;
2252 } 2986 }
2253} 2987}
2254 2988
2255static int 2989static int
… …
2278 { 3012 {
2279 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3013 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2280 3014
2281 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3015 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2282 frame->prepare = prepare_schedule; 3016 frame->prepare = prepare_schedule;
2283
2284 /* to avoid race conditions when a woken-up coro gets terminated */ 3017 /* to avoid race conditions when a woken-up coro gets terminated */
2285 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3018 /* we arrange for a temporary on_destroy that calls adjust (0) */
2286 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3019 frame->destroy = coro_semaphore_destroy;
2287 } 3020 }
2288} 3021}
2289 3022
2290static void 3023static void
2291slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3024slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2299{ 3032{
2300 if (items >= 2) 3033 if (items >= 2)
2301 { 3034 {
2302 /* callback form */ 3035 /* callback form */
2303 AV *av = (AV *)SvRV (arg [0]); 3036 AV *av = (AV *)SvRV (arg [0]);
2304 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3037 SV *cb_cv = s_get_cv_croak (arg [1]);
2305 3038
2306 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3039 av_push (av, SvREFCNT_inc_NN (cb_cv));
2307 3040
2308 if (SvIVX (AvARRAY (av)[0]) > 0) 3041 if (SvIVX (AvARRAY (av)[0]) > 0)
2309 coro_semaphore_adjust (aTHX_ av, 0); 3042 coro_semaphore_adjust (aTHX_ av, 0);
2310 3043
2311 frame->prepare = prepare_nop; 3044 frame->prepare = prepare_nop;
… …
2335 AvARRAY (av)[0] = AvARRAY (av)[1]; 3068 AvARRAY (av)[0] = AvARRAY (av)[1];
2336 AvARRAY (av)[1] = cb; 3069 AvARRAY (av)[1] = cb;
2337 3070
2338 cb = av_shift (av); 3071 cb = av_shift (av);
2339 3072
3073 if (SvTYPE (cb) == SVt_PVCV)
3074 {
3075 dSP;
3076 PUSHMARK (SP);
3077 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3078 PUTBACK;
3079 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3080 }
3081 else
3082 {
2340 api_ready (aTHX_ cb); 3083 api_ready (aTHX_ cb);
2341 sv_setiv (cb, 0); /* signal waiter */ 3084 sv_setiv (cb, 0); /* signal waiter */
3085 }
3086
2342 SvREFCNT_dec (cb); 3087 SvREFCNT_dec (cb);
2343 3088
2344 --count; 3089 --count;
2345 } 3090 }
2346} 3091}
… …
2355static void 3100static void
2356slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3101slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2357{ 3102{
2358 AV *av = (AV *)SvRV (arg [0]); 3103 AV *av = (AV *)SvRV (arg [0]);
2359 3104
3105 if (items >= 2)
3106 {
3107 SV *cb_cv = s_get_cv_croak (arg [1]);
3108 av_push (av, SvREFCNT_inc_NN (cb_cv));
3109
2360 if (SvIVX (AvARRAY (av)[0])) 3110 if (SvIVX (AvARRAY (av)[0]))
3111 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3112
3113 frame->prepare = prepare_nop;
3114 frame->check = slf_check_nop;
3115 }
3116 else if (SvIVX (AvARRAY (av)[0]))
2361 { 3117 {
2362 SvIVX (AvARRAY (av)[0]) = 0; 3118 SvIVX (AvARRAY (av)[0]) = 0;
2363 frame->prepare = prepare_nop; 3119 frame->prepare = prepare_nop;
2364 frame->check = slf_check_nop; 3120 frame->check = slf_check_nop;
2365 } 3121 }
2366 else 3122 else
2367 { 3123 {
2368 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3124 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2369 3125
2370 av_push (av, waiter); 3126 av_push (av, waiter);
2371 3127
2372 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3128 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2373 frame->prepare = prepare_schedule; 3129 frame->prepare = prepare_schedule;
… …
2391 3147
2392static void 3148static void
2393coro_aio_callback (pTHX_ CV *cv) 3149coro_aio_callback (pTHX_ CV *cv)
2394{ 3150{
2395 dXSARGS; 3151 dXSARGS;
2396 AV *state = (AV *)GENSUB_ARG; 3152 AV *state = (AV *)S_GENSUB_ARG;
2397 SV *coro = av_pop (state); 3153 SV *coro = av_pop (state);
2398 SV *data_sv = newSV (sizeof (struct io_state)); 3154 SV *data_sv = newSV (sizeof (struct io_state));
2399 3155
2400 av_extend (state, items); 3156 av_extend (state, items - 1);
2401 3157
2402 sv_upgrade (data_sv, SVt_PV); 3158 sv_upgrade (data_sv, SVt_PV);
2403 SvCUR_set (data_sv, sizeof (struct io_state)); 3159 SvCUR_set (data_sv, sizeof (struct io_state));
2404 SvPOK_only (data_sv); 3160 SvPOK_only (data_sv);
2405 3161
… …
2486 dSP; 3242 dSP;
2487 3243
2488 static SV *prio_cv; 3244 static SV *prio_cv;
2489 static SV *prio_sv; 3245 static SV *prio_sv;
2490 3246
2491 if (expect_false (!prio_cv)) 3247 if (ecb_expect_false (!prio_cv))
2492 { 3248 {
2493 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3249 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2494 prio_sv = newSViv (0); 3250 prio_sv = newSViv (0);
2495 } 3251 }
2496 3252
… …
2515 3271
2516 for (i = 0; i < items; ++i) 3272 for (i = 0; i < items; ++i)
2517 PUSHs (arg [i]); 3273 PUSHs (arg [i]);
2518 3274
2519 /* now push the callback closure */ 3275 /* now push the callback closure */
2520 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3276 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2521 3277
2522 /* now call the AIO function - we assume our request is uncancelable */ 3278 /* now call the AIO function - we assume our request is uncancelable */
2523 PUTBACK; 3279 PUTBACK;
2524 call_sv ((SV *)req, G_VOID | G_DISCARD); 3280 call_sv ((SV *)req, G_VOID | G_DISCARD);
2525 } 3281 }
2526 3282
2527 /* now that the requets is going, we loop toll we have a result */ 3283 /* now that the request is going, we loop till we have a result */
2528 frame->data = (void *)state; 3284 frame->data = (void *)state;
2529 frame->prepare = prepare_schedule; 3285 frame->prepare = prepare_schedule;
2530 frame->check = slf_check_aio_req; 3286 frame->check = slf_check_aio_req;
2531} 3287}
2532 3288
… …
2539 3295
2540 XSRETURN_EMPTY; 3296 XSRETURN_EMPTY;
2541} 3297}
2542 3298
2543/*****************************************************************************/ 3299/*****************************************************************************/
3300
3301#if CORO_CLONE
3302# include "clone.c"
3303#endif
3304
3305/*****************************************************************************/
3306
3307static SV *
3308coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3309{
3310 SV *coro_sv;
3311 struct coro *coro;
3312 MAGIC *mg;
3313 HV *hv;
3314 SV *cb;
3315 int i;
3316
3317 if (argc > 0)
3318 {
3319 cb = s_get_cv_croak (argv [0]);
3320
3321 if (!is_coro)
3322 {
3323 if (CvISXSUB (cb))
3324 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3325
3326 if (!CvROOT (cb))
3327 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3328 }
3329 }
3330
3331 Newz (0, coro, 1, struct coro);
3332 coro->args = newAV ();
3333 coro->flags = CF_NEW;
3334
3335 if (coro_first) coro_first->prev = coro;
3336 coro->next = coro_first;
3337 coro_first = coro;
3338
3339 coro->hv = hv = newHV ();
3340 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3341 mg->mg_flags |= MGf_DUP;
3342 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3343
3344 if (argc > 0)
3345 {
3346 av_extend (coro->args, argc + is_coro - 1);
3347
3348 if (is_coro)
3349 {
3350 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3351 cb = (SV *)cv_coro_run;
3352 }
3353
3354 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3355
3356 for (i = 1; i < argc; i++)
3357 av_push (coro->args, newSVsv (argv [i]));
3358 }
3359
3360 return coro_sv;
3361}
3362
3363#ifndef __cplusplus
3364ecb_cold XS(boot_Coro__State);
3365#endif
3366
3367#if CORO_JIT
3368
3369static void ecb_noinline ecb_cold
3370pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3371{
3372 dSP;
3373 AV *av = newAV ();
3374
3375 av_store (av, 3, newSVuv (d));
3376 av_store (av, 2, newSVuv (c));
3377 av_store (av, 1, newSVuv (b));
3378 av_store (av, 0, newSVuv (a));
3379
3380 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3381
3382 PUTBACK;
3383}
3384
3385static void ecb_noinline ecb_cold
3386jit_init (pTHX)
3387{
3388 dSP;
3389 SV *load, *save;
3390 char *map_base;
3391 char *load_ptr, *save_ptr;
3392 STRLEN load_len, save_len, map_len;
3393 int count;
3394
3395 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3396
3397 PUSHMARK (SP);
3398#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3399# include "state.h"
3400#undef VARx
3401 count = call_pv ("Coro::State::_jit", G_ARRAY);
3402 SPAGAIN;
3403
3404 save = POPs; save_ptr = SvPVbyte (save, save_len);
3405 load = POPs; load_ptr = SvPVbyte (load, load_len);
3406
3407 map_len = load_len + save_len + 16;
3408
3409 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3410
3411 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3412
3413 load_perl_slots = (load_save_perl_slots_type)map_base;
3414 memcpy (map_base, load_ptr, load_len);
3415
3416 map_base += (load_len + 15) & ~15;
3417
3418 save_perl_slots = (load_save_perl_slots_type)map_base;
3419 memcpy (map_base, save_ptr, save_len);
3420
3421 /* we are good citizens and try to make the page read-only, so the evil evil */
3422 /* hackers might have it a bit more difficult */
3423 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3424
3425 PUTBACK;
3426 eval_pv ("undef &Coro::State::_jit", 1);
3427}
3428
3429#endif
2544 3430
2545MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3431MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2546 3432
2547PROTOTYPES: DISABLE 3433PROTOTYPES: DISABLE
2548 3434
… …
2553 coro_thx = PERL_GET_CONTEXT; 3439 coro_thx = PERL_GET_CONTEXT;
2554# endif 3440# endif
2555#endif 3441#endif
2556 BOOT_PAGESIZE; 3442 BOOT_PAGESIZE;
2557 3443
3444 /* perl defines these to check for existance first, but why it doesn't */
3445 /* just create them one at init time is not clear to me, except for */
3446 /* programs trying to delete them, but... */
3447 /* anyway, we declare this as invalid and make sure they are initialised here */
3448 DEFSV;
3449 ERRSV;
3450
3451 cctx_current = cctx_new_empty ();
3452
2558 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3453 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2559 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3454 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2560 3455
2561 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3456 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2562 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3457 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2581 3476
2582 { 3477 {
2583 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3478 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2584 3479
2585 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3480 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2586 hv_store_ent (PL_custom_op_names, slf, 3481 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2587 newSVpv ("coro_slf", 0), 0);
2588 3482
2589 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3483 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2590 hv_store_ent (PL_custom_op_descs, slf, 3484 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2591 newSVpv ("coro schedule like function", 0), 0);
2592 } 3485 }
2593 3486
2594 coroapi.ver = CORO_API_VERSION; 3487 coroapi.ver = CORO_API_VERSION;
2595 coroapi.rev = CORO_API_REVISION; 3488 coroapi.rev = CORO_API_REVISION;
2596 3489
… …
2601 coroapi.prepare_nop = prepare_nop; 3494 coroapi.prepare_nop = prepare_nop;
2602 coroapi.prepare_schedule = prepare_schedule; 3495 coroapi.prepare_schedule = prepare_schedule;
2603 coroapi.prepare_cede = prepare_cede; 3496 coroapi.prepare_cede = prepare_cede;
2604 coroapi.prepare_cede_notself = prepare_cede_notself; 3497 coroapi.prepare_cede_notself = prepare_cede_notself;
2605 3498
2606 { 3499 time_init (aTHX);
2607 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2608 3500
2609 if (!svp) croak ("Time::HiRes is required");
2610 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2611
2612 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2613 }
2614
2615 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3501 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3502#if CORO_JIT
3503 PUTBACK;
3504 jit_init (aTHX);
3505 SPAGAIN;
3506#endif
2616} 3507}
2617 3508
2618SV * 3509SV *
2619new (char *klass, ...) 3510new (SV *klass, ...)
2620 ALIAS: 3511 ALIAS:
2621 Coro::new = 1 3512 Coro::new = 1
2622 CODE: 3513 CODE:
2623{ 3514 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2624 struct coro *coro; 3515 OUTPUT:
2625 MAGIC *mg;
2626 HV *hv;
2627 CV *cb;
2628 int i;
2629
2630 if (items > 1)
2631 {
2632 cb = coro_sv_2cv (aTHX_ ST (1));
2633
2634 if (!ix)
2635 {
2636 if (CvISXSUB (cb))
2637 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2638
2639 if (!CvROOT (cb))
2640 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2641 }
2642 }
2643
2644 Newz (0, coro, 1, struct coro);
2645 coro->args = newAV ();
2646 coro->flags = CF_NEW;
2647
2648 if (coro_first) coro_first->prev = coro;
2649 coro->next = coro_first;
2650 coro_first = coro;
2651
2652 coro->hv = hv = newHV ();
2653 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2654 mg->mg_flags |= MGf_DUP;
2655 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2656
2657 if (items > 1)
2658 {
2659 av_extend (coro->args, items - 1 + ix);
2660
2661 if (ix)
2662 {
2663 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2664 cb = cv_coro_run;
2665 }
2666
2667 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2668
2669 for (i = 2; i < items; i++)
2670 av_push (coro->args, newSVsv (ST (i)));
2671 }
2672}
2673 OUTPUT:
2674 RETVAL 3516 RETVAL
2675 3517
2676void 3518void
2677transfer (...) 3519transfer (...)
2678 PROTOTYPE: $$ 3520 PROTOTYPE: $$
2679 CODE: 3521 CODE:
2680 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3522 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2681 3523
2682bool
2683_destroy (SV *coro_sv)
2684 CODE:
2685 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2686 OUTPUT:
2687 RETVAL
2688
2689void 3524void
2690_exit (int code) 3525_exit (int code)
2691 PROTOTYPE: $ 3526 PROTOTYPE: $
2692 CODE: 3527 CODE:
2693 _exit (code); 3528 _exit (code);
3529
3530SV *
3531clone (Coro::State coro)
3532 CODE:
3533{
3534#if CORO_CLONE
3535 struct coro *ncoro = coro_clone (aTHX_ coro);
3536 MAGIC *mg;
3537 /* TODO: too much duplication */
3538 ncoro->hv = newHV ();
3539 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3540 mg->mg_flags |= MGf_DUP;
3541 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3542#else
3543 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3544#endif
3545}
3546 OUTPUT:
3547 RETVAL
2694 3548
2695int 3549int
2696cctx_stacksize (int new_stacksize = 0) 3550cctx_stacksize (int new_stacksize = 0)
2697 PROTOTYPE: ;$ 3551 PROTOTYPE: ;$
2698 CODE: 3552 CODE:
… …
2748 eval = 1 3602 eval = 1
2749 CODE: 3603 CODE:
2750{ 3604{
2751 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3605 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2752 { 3606 {
2753 struct coro temp; 3607 struct coro *current = SvSTATE_current;
3608 struct CoroSLF slf_save;
2754 3609
2755 if (!(coro->flags & CF_RUNNING)) 3610 if (current != coro)
2756 { 3611 {
2757 PUTBACK; 3612 PUTBACK;
2758 save_perl (aTHX_ &temp); 3613 save_perl (aTHX_ current);
2759 load_perl (aTHX_ coro); 3614 load_perl (aTHX_ coro);
3615 /* the coro is most likely in an active SLF call.
3616 * while not strictly required (the code we execute is
3617 * not allowed to call any SLF functions), it's cleaner
3618 * to reinitialise the slf_frame and restore it later.
3619 * This might one day allow us to actually do SLF calls
3620 * from code executed here.
3621 */
3622 slf_save = slf_frame;
3623 slf_frame.prepare = 0;
3624 SPAGAIN;
2760 } 3625 }
2761 3626
2762 {
2763 dSP;
2764 ENTER;
2765 SAVETMPS;
2766 PUTBACK;
2767 PUSHSTACK; 3627 PUSHSTACK;
3628
2768 PUSHMARK (SP); 3629 PUSHMARK (SP);
3630 PUTBACK;
2769 3631
2770 if (ix) 3632 if (ix)
2771 eval_sv (coderef, 0); 3633 eval_sv (coderef, 0);
2772 else 3634 else
2773 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3635 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2774 3636
2775 POPSTACK; 3637 POPSTACK;
2776 SPAGAIN; 3638 SPAGAIN;
2777 FREETMPS;
2778 LEAVE;
2779 PUTBACK;
2780 }
2781 3639
2782 if (!(coro->flags & CF_RUNNING)) 3640 if (current != coro)
2783 { 3641 {
3642 PUTBACK;
3643 slf_frame = slf_save;
2784 save_perl (aTHX_ coro); 3644 save_perl (aTHX_ coro);
2785 load_perl (aTHX_ &temp); 3645 load_perl (aTHX_ current);
2786 SPAGAIN; 3646 SPAGAIN;
2787 } 3647 }
2788 } 3648 }
2789} 3649}
2790 3650
… …
2793 PROTOTYPE: $ 3653 PROTOTYPE: $
2794 ALIAS: 3654 ALIAS:
2795 is_ready = CF_READY 3655 is_ready = CF_READY
2796 is_running = CF_RUNNING 3656 is_running = CF_RUNNING
2797 is_new = CF_NEW 3657 is_new = CF_NEW
2798 is_destroyed = CF_DESTROYED 3658 is_destroyed = CF_ZOMBIE
3659 is_zombie = CF_ZOMBIE
3660 is_suspended = CF_SUSPENDED
2799 CODE: 3661 CODE:
2800 RETVAL = boolSV (coro->flags & ix); 3662 RETVAL = boolSV (coro->flags & ix);
2801 OUTPUT: 3663 OUTPUT:
2802 RETVAL 3664 RETVAL
2803 3665
2804void 3666void
2805throw (Coro::State self, SV *throw = &PL_sv_undef) 3667throw (Coro::State self, SV *exception = &PL_sv_undef)
2806 PROTOTYPE: $;$ 3668 PROTOTYPE: $;$
2807 CODE: 3669 CODE:
2808{ 3670{
2809 struct coro *current = SvSTATE_current; 3671 struct coro *current = SvSTATE_current;
2810 SV **throwp = self == current ? &CORO_THROW : &self->except; 3672 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2811 SvREFCNT_dec (*throwp); 3673 SvREFCNT_dec (*exceptionp);
2812 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3674 SvGETMAGIC (exception);
3675 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
2813} 3676}
2814 3677
2815void 3678void
2816api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3679api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2817 PROTOTYPE: $;$ 3680 PROTOTYPE: $;$
… …
2819 3682
2820SV * 3683SV *
2821has_cctx (Coro::State coro) 3684has_cctx (Coro::State coro)
2822 PROTOTYPE: $ 3685 PROTOTYPE: $
2823 CODE: 3686 CODE:
2824 RETVAL = boolSV (!!coro->cctx); 3687 /* maybe manage the running flag differently */
3688 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2825 OUTPUT: 3689 OUTPUT:
2826 RETVAL 3690 RETVAL
2827 3691
2828int 3692int
2829is_traced (Coro::State coro) 3693is_traced (Coro::State coro)
… …
2849 3713
2850void 3714void
2851force_cctx () 3715force_cctx ()
2852 PROTOTYPE: 3716 PROTOTYPE:
2853 CODE: 3717 CODE:
2854 SvSTATE_current->cctx->idle_sp = 0; 3718 cctx_current->idle_sp = 0;
2855 3719
2856void 3720void
2857swap_defsv (Coro::State self) 3721swap_defsv (Coro::State self)
2858 PROTOTYPE: $ 3722 PROTOTYPE: $
2859 ALIAS: 3723 ALIAS:
… …
2867 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3731 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2868 3732
2869 SV *tmp = *src; *src = *dst; *dst = tmp; 3733 SV *tmp = *src; *src = *dst; *dst = tmp;
2870 } 3734 }
2871 3735
3736void
3737cancel (Coro::State self)
3738 CODE:
3739 coro_state_destroy (aTHX_ self);
3740
3741SV *
3742enable_times (int enabled = enable_times)
3743 CODE:
3744{
3745 RETVAL = boolSV (enable_times);
3746
3747 if (enabled != enable_times)
3748 {
3749 enable_times = enabled;
3750
3751 coro_times_update ();
3752 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3753 }
3754}
3755 OUTPUT:
3756 RETVAL
3757
3758void
3759times (Coro::State self)
3760 PPCODE:
3761{
3762 struct coro *current = SvSTATE (coro_current);
3763
3764 if (ecb_expect_false (current == self))
3765 {
3766 coro_times_update ();
3767 coro_times_add (SvSTATE (coro_current));
3768 }
3769
3770 EXTEND (SP, 2);
3771 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3772 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3773
3774 if (ecb_expect_false (current == self))
3775 coro_times_sub (SvSTATE (coro_current));
3776}
3777
3778void
3779swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3780 CODE:
3781{
3782 struct coro *current = SvSTATE_current;
3783
3784 if (current == coro)
3785 SWAP_SVS (current);
3786
3787 if (!coro->swap_sv)
3788 coro->swap_sv = newAV ();
3789
3790 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3791 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3792
3793 if (current == coro)
3794 SWAP_SVS (current);
3795}
3796
2872 3797
2873MODULE = Coro::State PACKAGE = Coro 3798MODULE = Coro::State PACKAGE = Coro
2874 3799
2875BOOT: 3800BOOT:
2876{ 3801{
2877 int i;
2878
2879 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2880 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3802 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2881 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3803 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2882 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 3804 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2883 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); 3805 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2884 SvREADONLY_on (coro_current); 3806 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3807 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3808 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3809 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2885 3810
3811 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3812 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3813 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3814 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3815
2886 coro_stash = gv_stashpv ("Coro", TRUE); 3816 coro_stash = gv_stashpv ("Coro", TRUE);
2887 3817
2888 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3818 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2889 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3819 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2890 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3820 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2891 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3821 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2892 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3822 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2893 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3823 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2894
2895 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2896 coro_ready[i] = newAV ();
2897 3824
2898 { 3825 {
2899 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3826 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2900 3827
2901 coroapi.schedule = api_schedule; 3828 coroapi.schedule = api_schedule;
3829 coroapi.schedule_to = api_schedule_to;
2902 coroapi.cede = api_cede; 3830 coroapi.cede = api_cede;
2903 coroapi.cede_notself = api_cede_notself; 3831 coroapi.cede_notself = api_cede_notself;
2904 coroapi.ready = api_ready; 3832 coroapi.ready = api_ready;
2905 coroapi.is_ready = api_is_ready; 3833 coroapi.is_ready = api_is_ready;
2906 coroapi.nready = coro_nready; 3834 coroapi.nready = coro_nready;
… …
2910 sv_setiv (sv, (IV)&coroapi); 3838 sv_setiv (sv, (IV)&coroapi);
2911 SvREADONLY_on (sv); 3839 SvREADONLY_on (sv);
2912 } 3840 }
2913} 3841}
2914 3842
3843SV *
3844async (...)
3845 PROTOTYPE: &@
3846 CODE:
3847 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3848 api_ready (aTHX_ RETVAL);
3849 OUTPUT:
3850 RETVAL
3851
3852void
3853_destroy (Coro::State coro)
3854 CODE:
3855 /* used by the manager thread */
3856 coro_state_destroy (aTHX_ coro);
3857
3858void
3859on_destroy (Coro::State coro, SV *cb)
3860 CODE:
3861 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3862
3863void
3864join (...)
3865 CODE:
3866 CORO_EXECUTE_SLF_XS (slf_init_join);
3867
3868void
3869terminate (...)
3870 CODE:
3871 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3872
3873void
3874cancel (...)
3875 CODE:
3876 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3877
3878int
3879safe_cancel (Coro::State self, ...)
3880 C_ARGS: aTHX_ self, &ST (1), items - 1
3881
2915void 3882void
2916schedule (...) 3883schedule (...)
2917 CODE: 3884 CODE:
2918 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3885 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3886
3887void
3888schedule_to (...)
3889 CODE:
3890 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3891
3892void
3893cede_to (...)
3894 CODE:
3895 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2919 3896
2920void 3897void
2921cede (...) 3898cede (...)
2922 CODE: 3899 CODE:
2923 CORO_EXECUTE_SLF_XS (slf_init_cede); 3900 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2937void 3914void
2938_set_readyhook (SV *hook) 3915_set_readyhook (SV *hook)
2939 PROTOTYPE: $ 3916 PROTOTYPE: $
2940 CODE: 3917 CODE:
2941 SvREFCNT_dec (coro_readyhook); 3918 SvREFCNT_dec (coro_readyhook);
3919 SvGETMAGIC (hook);
3920 if (SvOK (hook))
3921 {
2942 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3922 coro_readyhook = newSVsv (hook);
3923 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3924 }
3925 else
3926 {
3927 coro_readyhook = 0;
3928 CORO_READYHOOK = 0;
3929 }
2943 3930
2944int 3931int
2945prio (Coro::State coro, int newprio = 0) 3932prio (Coro::State coro, int newprio = 0)
2946 PROTOTYPE: $;$ 3933 PROTOTYPE: $;$
2947 ALIAS: 3934 ALIAS:
… …
2953 if (items > 1) 3940 if (items > 1)
2954 { 3941 {
2955 if (ix) 3942 if (ix)
2956 newprio = coro->prio - newprio; 3943 newprio = coro->prio - newprio;
2957 3944
2958 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3945 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2959 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3946 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2960 3947
2961 coro->prio = newprio; 3948 coro->prio = newprio;
2962 } 3949 }
2963} 3950}
2964 OUTPUT: 3951 OUTPUT:
… …
2978 CODE: 3965 CODE:
2979 RETVAL = coro_nready; 3966 RETVAL = coro_nready;
2980 OUTPUT: 3967 OUTPUT:
2981 RETVAL 3968 RETVAL
2982 3969
2983# for async_pool speedup
2984void 3970void
2985_pool_1 (SV *cb) 3971suspend (Coro::State self)
3972 PROTOTYPE: $
2986 CODE: 3973 CODE:
2987{ 3974 self->flags |= CF_SUSPENDED;
2988 HV *hv = (HV *)SvRV (coro_current);
2989 struct coro *coro = SvSTATE_hv ((SV *)hv);
2990 AV *defav = GvAV (PL_defgv);
2991 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2992 AV *invoke_av;
2993 int i, len;
2994 3975
2995 if (!invoke) 3976void
3977resume (Coro::State self)
3978 PROTOTYPE: $
3979 CODE:
3980 self->flags &= ~CF_SUSPENDED;
3981
3982void
3983_pool_handler (...)
3984 CODE:
3985 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3986
3987void
3988async_pool (SV *cv, ...)
3989 PROTOTYPE: &@
3990 PPCODE:
3991{
3992 HV *hv = (HV *)av_pop (av_async_pool);
3993 AV *av = newAV ();
3994 SV *cb = ST (0);
3995 int i;
3996
3997 av_extend (av, items - 2);
3998 for (i = 1; i < items; ++i)
3999 av_push (av, SvREFCNT_inc_NN (ST (i)));
4000
4001 if ((SV *)hv == &PL_sv_undef)
2996 { 4002 {
2997 SV *old = PL_diehook; 4003 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2998 PL_diehook = 0; 4004 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2999 SvREFCNT_dec (old); 4005 SvREFCNT_dec (sv);
3000 croak ("\3async_pool terminate\2\n");
3001 } 4006 }
3002 4007
3003 SvREFCNT_dec (coro->saved_deffh);
3004 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
3005
3006 hv_store (hv, "desc", sizeof ("desc") - 1,
3007 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
3008
3009 invoke_av = (AV *)SvRV (invoke);
3010 len = av_len (invoke_av);
3011
3012 sv_setsv (cb, AvARRAY (invoke_av)[0]);
3013
3014 if (len > 0)
3015 { 4008 {
3016 av_fill (defav, len - 1); 4009 struct coro *coro = SvSTATE_hv (hv);
3017 for (i = 0; i < len; ++i) 4010
3018 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4011 assert (!coro->invoke_cb);
4012 assert (!coro->invoke_av);
4013 coro->invoke_cb = SvREFCNT_inc (cb);
4014 coro->invoke_av = av;
3019 } 4015 }
3020}
3021 4016
3022void 4017 api_ready (aTHX_ (SV *)hv);
3023_pool_2 (SV *cb)
3024 CODE:
3025{
3026 HV *hv = (HV *)SvRV (coro_current);
3027 struct coro *coro = SvSTATE_hv ((SV *)hv);
3028 4018
3029 sv_setsv (cb, &PL_sv_undef); 4019 if (GIMME_V != G_VOID)
3030 4020 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3031 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4021 else
3032 coro->saved_deffh = 0;
3033
3034 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3035 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3036 {
3037 SV *old = PL_diehook;
3038 PL_diehook = 0;
3039 SvREFCNT_dec (old); 4022 SvREFCNT_dec (hv);
3040 croak ("\3async_pool terminate\2\n");
3041 }
3042
3043 av_clear (GvAV (PL_defgv));
3044 hv_store (hv, "desc", sizeof ("desc") - 1,
3045 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3046
3047 coro->prio = 0;
3048
3049 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3050 api_trace (aTHX_ coro_current, 0);
3051
3052 av_push (av_async_pool, newSVsv (coro_current));
3053} 4023}
3054 4024
3055SV * 4025SV *
3056rouse_cb () 4026rouse_cb ()
3057 PROTOTYPE: 4027 PROTOTYPE:
… …
3064rouse_wait (...) 4034rouse_wait (...)
3065 PROTOTYPE: ;$ 4035 PROTOTYPE: ;$
3066 PPCODE: 4036 PPCODE:
3067 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4037 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3068 4038
4039void
4040on_enter (SV *block)
4041 ALIAS:
4042 on_leave = 1
4043 PROTOTYPE: &
4044 CODE:
4045{
4046 struct coro *coro = SvSTATE_current;
4047 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4048
4049 block = s_get_cv_croak (block);
4050
4051 if (!*avp)
4052 *avp = newAV ();
4053
4054 av_push (*avp, SvREFCNT_inc (block));
4055
4056 if (!ix)
4057 on_enterleave_call (aTHX_ block);
4058
4059 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4060 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4061 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4062}
4063
3069 4064
3070MODULE = Coro::State PACKAGE = PerlIO::cede 4065MODULE = Coro::State PACKAGE = PerlIO::cede
3071 4066
3072BOOT: 4067BOOT:
3073 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4068 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3076MODULE = Coro::State PACKAGE = Coro::Semaphore 4071MODULE = Coro::State PACKAGE = Coro::Semaphore
3077 4072
3078SV * 4073SV *
3079new (SV *klass, SV *count = 0) 4074new (SV *klass, SV *count = 0)
3080 CODE: 4075 CODE:
4076{
4077 int semcnt = 1;
4078
4079 if (count)
4080 {
4081 SvGETMAGIC (count);
4082
4083 if (SvOK (count))
4084 semcnt = SvIV (count);
4085 }
4086
3081 RETVAL = sv_bless ( 4087 RETVAL = sv_bless (
3082 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4088 coro_waitarray_new (aTHX_ semcnt),
3083 GvSTASH (CvGV (cv)) 4089 GvSTASH (CvGV (cv))
3084 ); 4090 );
4091}
3085 OUTPUT: 4092 OUTPUT:
3086 RETVAL 4093 RETVAL
3087 4094
3088# helper for Coro::Channel 4095# helper for Coro::Channel and others
3089SV * 4096SV *
3090_alloc (int count) 4097_alloc (int count)
3091 CODE: 4098 CODE:
3092 RETVAL = coro_waitarray_new (aTHX_ count); 4099 RETVAL = coro_waitarray_new (aTHX_ count);
3093 OUTPUT: 4100 OUTPUT:
… …
3151 for (i = 1; i <= wcount; ++i) 4158 for (i = 1; i <= wcount; ++i)
3152 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4159 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3153 } 4160 }
3154} 4161}
3155 4162
4163MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4164
4165void
4166_may_delete (SV *sem, int count, unsigned int extra_refs)
4167 PPCODE:
4168{
4169 AV *av = (AV *)SvRV (sem);
4170
4171 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4172 && AvFILLp (av) == 0 /* no waiters, just count */
4173 && SvIV (AvARRAY (av)[0]) == count)
4174 XSRETURN_YES;
4175
4176 XSRETURN_NO;
4177}
4178
3156MODULE = Coro::State PACKAGE = Coro::Signal 4179MODULE = Coro::State PACKAGE = Coro::Signal
3157 4180
3158SV * 4181SV *
3159new (SV *klass) 4182new (SV *klass)
3160 CODE: 4183 CODE:
… …
3231 4254
3232void 4255void
3233_register (char *target, char *proto, SV *req) 4256_register (char *target, char *proto, SV *req)
3234 CODE: 4257 CODE:
3235{ 4258{
3236 CV *req_cv = coro_sv_2cv (aTHX_ req); 4259 SV *req_cv = s_get_cv_croak (req);
3237 /* newXSproto doesn't return the CV on 5.8 */ 4260 /* newXSproto doesn't return the CV on 5.8 */
3238 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4261 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3239 sv_setpv ((SV *)slf_cv, proto); 4262 sv_setpv ((SV *)slf_cv, proto);
3240 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4263 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3241} 4264}
3242 4265
4266MODULE = Coro::State PACKAGE = Coro::Select
4267
4268void
4269patch_pp_sselect ()
4270 CODE:
4271 if (!coro_old_pp_sselect)
4272 {
4273 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4274 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4275 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4276 }
4277
4278void
4279unpatch_pp_sselect ()
4280 CODE:
4281 if (coro_old_pp_sselect)
4282 {
4283 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4284 coro_old_pp_sselect = 0;
4285 }
4286

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