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Comparing Coro/Coro/State.xs (file contents):
Revision 1.269 by root, Fri Nov 14 06:50:11 2008 UTC vs.
Revision 1.417 by root, Sun Feb 19 11:14:45 2012 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
17#include "ecb.h"
12 18
19#include <stddef.h>
13#include <stdio.h> 20#include <stdio.h>
14#include <errno.h> 21#include <errno.h>
15#include <assert.h> 22#include <assert.h>
16 23
17#ifdef WIN32 24#ifndef SVs_PADSTALE
25# define SVs_PADSTALE 0
26#endif
27
28#if defined(_WIN32)
29# undef HAS_GETTIMEOFDAY
18# undef setjmp 30# undef setjmp
19# undef longjmp 31# undef longjmp
20# undef _exit 32# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 33# define setjmp _setjmp /* deep magic */
22#else 34#else
23# include <inttypes.h> /* most portable stdint.h */ 35# include <inttypes.h> /* most portable stdint.h */
24#endif 36#endif
25 37
26#ifdef HAVE_MMAP 38#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
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif 70#endif
105 71
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 72#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD 73# undef CORO_STACKGUARD
108#endif 74#endif
… …
117#endif 83#endif
118 84
119/* The next macros try to return the current stack pointer, in an as 85/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 86 * portable way as possible. */
121#if __GNUC__ >= 4 87#if __GNUC__ >= 4
88# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 89# define STACKLEVEL __builtin_frame_address (0)
123#else 90#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 91# define dSTACKLEVEL volatile void *stacklevel
92# define STACKLEVEL ((void *)&stacklevel)
125#endif 93#endif
126 94
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 95#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 96
144#include "CoroAPI.h" 97#include "CoroAPI.h"
98#define GCoroAPI (&coroapi) /* very sneaky */
145 99
146#ifdef USE_ITHREADS 100#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 101# if CORO_PTHREAD
152static void *coro_thx; 102static void *coro_thx;
153# endif 103# endif
104#endif
154 105
155#else 106/* used in state.h */
107#define VAR(name,type) VARx(name, PL_ ## name, type)
156 108
157# define LOCK (void)0 109#ifdef __linux
158# define UNLOCK (void)0 110# include <time.h> /* for timespec */
159 111# 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
160#endif 116# endif
161 117#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 118
177static 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]);
121
122/* we hijack an hopefully unused CV flag for our purposes */
123#define CVf_SLF 0x4000
124static OP *pp_slf (pTHX);
125static void slf_destroy (pTHX_ struct coro *coro);
178 126
179static U32 cctx_gen; 127static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 128static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 129static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 130static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 131static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 132static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 133static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next;
187 134
188struct transfer_args 135static AV *av_destroy; /* destruction queue */
189{ 136static SV *sv_manager; /* the manager coro */
190 struct coro *prev, *next; 137static SV *sv_idle; /* $Coro::idle */
191};
192 138
193static GV *irsgv; /* $/ */ 139static GV *irsgv; /* $/ */
194static GV *stdoutgv; /* *STDOUT */ 140static GV *stdoutgv; /* *STDOUT */
195static SV *rv_diehook; 141static SV *rv_diehook;
196static SV *rv_warnhook; 142static SV *rv_warnhook;
197static HV *hv_sig; /* %SIG */ 143static HV *hv_sig; /* %SIG */
198 144
199/* async_pool helper stuff */ 145/* async_pool helper stuff */
200static SV *sv_pool_rss; 146static SV *sv_pool_rss;
201static SV *sv_pool_size; 147static SV *sv_pool_size;
148static SV *sv_async_pool_idle; /* description string */
202static AV *av_async_pool; 149static AV *av_async_pool; /* idle pool */
150static SV *sv_Coro; /* class string */
151static CV *cv_pool_handler;
203 152
204/* Coro::AnyEvent */ 153/* Coro::AnyEvent */
205static SV *sv_activity; 154static SV *sv_activity;
206 155
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
207static struct coro_cctx *cctx_first; 162static struct coro_cctx *cctx_first;
208static int cctx_count, cctx_idle; 163static int cctx_count, cctx_idle;
209 164
210enum { 165enum
166{
211 CC_MAPPED = 0x01, 167 CC_MAPPED = 0x01,
212 CC_NOREUSE = 0x02, /* throw this away after tracing */ 168 CC_NOREUSE = 0x02, /* throw this away after tracing */
213 CC_TRACE = 0x04, 169 CC_TRACE = 0x04,
214 CC_TRACE_SUB = 0x08, /* trace sub calls */ 170 CC_TRACE_SUB = 0x08, /* trace sub calls */
215 CC_TRACE_LINE = 0x10, /* trace each statement */ 171 CC_TRACE_LINE = 0x10, /* trace each statement */
216 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 172 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
217}; 173};
218 174
219/* this is a structure representing a c-level coroutine */ 175/* this is a structure representing a c-level coroutine */
220typedef struct coro_cctx { 176typedef struct coro_cctx
177{
221 struct coro_cctx *next; 178 struct coro_cctx *next;
222 179
223 /* the stack */ 180 /* the stack */
224 void *sptr; 181 void *sptr;
225 size_t ssize; 182 size_t ssize;
226 183
227 /* cpu state */ 184 /* cpu state */
228 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
229 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
230 JMPENV *top_env; 189 JMPENV *top_env;
231 coro_context cctx; 190 coro_context cctx;
232 191
233 U32 gen; 192 U32 gen;
234#if CORO_USE_VALGRIND 193#if CORO_USE_VALGRIND
235 int valgrind_id; 194 int valgrind_id;
236#endif 195#endif
237 unsigned char flags; 196 unsigned char flags;
238} coro_cctx; 197} coro_cctx;
239 198
199static coro_cctx *cctx_current; /* the currently running cctx */
200
201/*****************************************************************************/
202
203static MGVTBL coro_state_vtbl;
204
240enum { 205enum
206{
241 CF_RUNNING = 0x0001, /* coroutine is running */ 207 CF_RUNNING = 0x0001, /* coroutine is running */
242 CF_READY = 0x0002, /* coroutine is ready */ 208 CF_READY = 0x0002, /* coroutine is ready */
243 CF_NEW = 0x0004, /* has never been switched to */ 209 CF_NEW = 0x0004, /* has never been switched to */
244 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) */
245}; 213};
246 214
247/* 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 */
248typedef struct { 216typedef struct
249 SV *defsv; 217{
250 AV *defav;
251 SV *errsv;
252 SV *irsgv;
253#define VAR(name,type) type name; 218#define VARx(name,expr,type) type name;
254# include "state.h" 219# include "state.h"
255#undef VAR 220#undef VARx
256} perl_slots; 221} perl_slots;
257 222
223/* how many context stack entries do we need for perl_slots */
258#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))
259 225
260/* this is a structure representing a perl-level coroutine */ 226/* this is a structure representing a perl-level coroutine */
261struct coro { 227struct coro
228{
262 /* the c coroutine allocated to this perl coroutine, if any */ 229 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 230 coro_cctx *cctx;
264 231
265 /* process data */ 232 /* ready queue */
233 struct coro *next_ready;
234
235 /* state data */
236 struct CoroSLF slf_frame; /* saved slf frame */
266 AV *mainstack; 237 AV *mainstack;
267 perl_slots *slot; /* basically the saved sp */ 238 perl_slots *slot; /* basically the saved sp */
268 239
240 CV *startcv; /* the CV to execute */
269 AV *args; /* data associated with this coroutine (initial args) */ 241 AV *args; /* data associated with this coroutine (initial args) */
270 int refcnt; /* coroutines are refcounted, yes */
271 int flags; /* CF_ flags */ 242 int flags; /* CF_ flags */
272 HV *hv; /* the perl hash associated with this coro, if any */ 243 HV *hv; /* the perl hash associated with this coro, if any */
273 244
274 /* statistics */ 245 /* statistics */
275 int usecount; /* number of transfers to this coro */ 246 int usecount; /* number of transfers to this coro */
276 247
277 /* coro process data */ 248 /* coro process data */
278 int prio; 249 int prio;
279 SV *throw; /* exception to be thrown */ 250 SV *except; /* exception to be thrown */
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 */
280 254
281 /* async_pool */ 255 /* async_pool */
282 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;
283 269
284 /* linked list */ 270 /* linked list */
285 struct coro *next, *prev; 271 struct coro *next, *prev;
286}; 272};
287 273
288typedef struct coro *Coro__State; 274typedef struct coro *Coro__State;
289typedef struct coro *Coro__State_or_hashref; 275typedef struct coro *Coro__State_or_hashref;
290 276
277/* the following variables are effectively part of the perl context */
278/* and get copied between struct coro and these variables */
279/* the main reason we don't support windows process emulation */
280static struct CoroSLF slf_frame; /* the current slf frame */
281
291/** Coro ********************************************************************/ 282/** Coro ********************************************************************/
292 283
293#define PRIO_MAX 3 284#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 285#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 286#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 287#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 288#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 289#define CORO_PRIO_MIN -4
299 290
300/* for Coro.pm */ 291/* for Coro.pm */
301static SV *coro_current; 292static SV *coro_current;
302static SV *coro_readyhook; 293static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 294static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
304static int coro_nready; 295static CV *cv_coro_run;
305static struct coro *coro_first; 296static struct coro *coro_first;
297#define coro_nready coroapi.nready
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
306 393
307/** lowlevel stuff **********************************************************/ 394/** lowlevel stuff **********************************************************/
308 395
309static SV * 396static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 397coro_get_sv (pTHX_ const char *name, int create)
311{ 398{
312#if PERL_VERSION_ATLEAST (5,10,0) 399#if PERL_VERSION_ATLEAST (5,10,0)
313 /* 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 */
314 get_sv (name, create); 401 get_sv (name, create);
315#endif 402#endif
316 return get_sv (name, create); 403 return get_sv (name, create);
317} 404}
318 405
319static AV * 406static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 407coro_get_av (pTHX_ const char *name, int create)
321{ 408{
322#if PERL_VERSION_ATLEAST (5,10,0) 409#if PERL_VERSION_ATLEAST (5,10,0)
323 /* 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 */
324 get_av (name, create); 411 get_av (name, create);
325#endif 412#endif
326 return get_av (name, create); 413 return get_av (name, create);
327} 414}
328 415
329static HV * 416static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 417coro_get_hv (pTHX_ const char *name, int create)
331{ 418{
332#if PERL_VERSION_ATLEAST (5,10,0) 419#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 421 get_hv (name, create);
335#endif 422#endif
336 return get_hv (name, create); 423 return get_hv (name, create);
337} 424}
338 425
339static AV * 426ecb_inline void
427coro_times_update (void)
428{
429#ifdef coro_clock_gettime
430 struct timespec ts;
431
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 PERL_MAGIC_ext
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(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 605/* the next two functions merely cache the padlists */
445static void 606ecb_inline void
446get_padlist (pTHX_ CV *cv) 607get_padlist (pTHX_ CV *cv)
447{ 608{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 609 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 610 AV *av;
450 611
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 612 if (ecb_expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 613 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
453 else 614 else
454 { 615 {
455#if CORO_PREFER_PERL_FUNCTIONS 616#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 617 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 618 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 619 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 620 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 621 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 622 SvREFCNT_dec (cp);
462#else 623#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 624 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 625#endif
465 } 626 }
466} 627}
467 628
468static void 629ecb_inline void
469put_padlist (pTHX_ CV *cv) 630put_padlist (pTHX_ CV *cv)
470{ 631{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 632 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av; 633 AV *av;
473 634
474 if (expect_false (!mg)) 635 if (ecb_expect_false (!mg))
475 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);
476 637
477 av = (AV *)mg->mg_obj; 638 av = (AV *)mg->mg_obj;
478 639
479 if (expect_false (AvFILLp (av) >= AvMAX (av))) 640 if (ecb_expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1); 641 av_extend (av, AvFILLp (av) + 1);
481 642
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); 643 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 644}
484 645
485/** 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);
486 702
487static void 703static void
488load_perl (pTHX_ Coro__State c) 704load_perl (pTHX_ Coro__State c)
489{ 705{
490 perl_slots *slot = c->slot; 706 perl_slots *slot = c->slot;
491 c->slot = 0; 707 c->slot = 0;
492 708
493 PL_mainstack = c->mainstack; 709 PL_mainstack = c->mainstack;
494 710
495 GvSV (PL_defgv) = slot->defsv; 711#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 712 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 713#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 714 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 715 # include "state.h"
502 #undef VAR 716 #undef VARx
717#endif
503 718
504 { 719 {
505 dSP; 720 dSP;
506 721
507 CV *cv; 722 CV *cv;
508 723
509 /* now do the ugly restore mess */ 724 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 725 while (ecb_expect_true (cv = (CV *)POPs))
511 { 726 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 727 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 728 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 729 CvPADLIST (cv) = (AV *)POPs;
515 } 730 }
516 731
517 PUTBACK; 732 PUTBACK;
518 } 733 }
734
735 slf_frame = c->slf_frame;
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);
519} 755}
520 756
521static void 757static void
522save_perl (pTHX_ Coro__State c) 758save_perl (pTHX_ Coro__State c)
523{ 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
778 c->except = CORO_THROW;
779 c->slf_frame = slf_frame;
780
524 { 781 {
525 dSP; 782 dSP;
526 I32 cxix = cxstack_ix; 783 I32 cxix = cxstack_ix;
527 PERL_CONTEXT *ccstk = cxstack; 784 PERL_CONTEXT *ccstk = cxstack;
528 PERL_SI *top_si = PL_curstackinfo; 785 PERL_SI *top_si = PL_curstackinfo;
… …
534 791
535 XPUSHs (Nullsv); 792 XPUSHs (Nullsv);
536 /* this loop was inspired by pp_caller */ 793 /* this loop was inspired by pp_caller */
537 for (;;) 794 for (;;)
538 { 795 {
539 while (expect_true (cxix >= 0)) 796 while (ecb_expect_true (cxix >= 0))
540 { 797 {
541 PERL_CONTEXT *cx = &ccstk[cxix--]; 798 PERL_CONTEXT *cx = &ccstk[cxix--];
542 799
543 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))
544 { 801 {
545 CV *cv = cx->blk_sub.cv; 802 CV *cv = cx->blk_sub.cv;
546 803
547 if (expect_true (CvDEPTH (cv))) 804 if (ecb_expect_true (CvDEPTH (cv)))
548 { 805 {
549 EXTEND (SP, 3); 806 EXTEND (SP, 3);
550 PUSHs ((SV *)CvPADLIST (cv)); 807 PUSHs ((SV *)CvPADLIST (cv));
551 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 808 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
552 PUSHs ((SV *)cv); 809 PUSHs ((SV *)cv);
… …
555 get_padlist (aTHX_ cv); 812 get_padlist (aTHX_ cv);
556 } 813 }
557 } 814 }
558 } 815 }
559 816
560 if (expect_true (top_si->si_type == PERLSI_MAIN)) 817 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
561 break; 818 break;
562 819
563 top_si = top_si->si_prev; 820 top_si = top_si->si_prev;
564 ccstk = top_si->si_cxstack; 821 ccstk = top_si->si_cxstack;
565 cxix = top_si->si_cxix; 822 cxix = top_si->si_cxix;
… …
567 824
568 PUTBACK; 825 PUTBACK;
569 } 826 }
570 827
571 /* allocate some space on the context stack for our purposes */ 828 /* allocate some space on the context stack for our purposes */
572 /* we manually unroll here, as usually 2 slots is enough */ 829 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
573 if (SLOT_COUNT >= 1) CXINC;
574 if (SLOT_COUNT >= 2) CXINC;
575 if (SLOT_COUNT >= 3) CXINC;
576 { 830 {
577 int i; 831 unsigned int i;
832
578 for (i = 3; i < SLOT_COUNT; ++i) 833 for (i = 0; i < SLOT_COUNT; ++i)
579 CXINC; 834 CXINC;
580 } 835
581 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 836 cxstack_ix -= SLOT_COUNT; /* undo allocation */
837 }
582 838
583 c->mainstack = PL_mainstack; 839 c->mainstack = PL_mainstack;
584 840
585 { 841 {
586 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 842 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
587 843
588 slot->defav = GvAV (PL_defgv); 844#if CORO_JIT
589 slot->defsv = DEFSV; 845 save_perl_slots (slot);
590 slot->errsv = ERRSV; 846#else
591 slot->irsgv = GvSV (irsgv);
592
593 #define VAR(name,type) slot->name = PL_ ## name; 847 #define VARx(name,expr,type) slot->name = expr;
594 # include "state.h" 848 # include "state.h"
595 #undef VAR 849 #undef VARx
850#endif
596 } 851 }
597} 852}
598 853
599/* 854/*
600 * allocate various perl stacks. This is an exact copy 855 * allocate various perl stacks. This is almost an exact copy
601 * of perl.c:init_stacks, except that it uses less memory 856 * of perl.c:init_stacks, except that it uses less memory
602 * on the (sometimes correct) assumption that coroutines do 857 * on the (sometimes correct) assumption that coroutines do
603 * not usually need a lot of stackspace. 858 * not usually need a lot of stackspace.
604 */ 859 */
605#if CORO_PREFER_PERL_FUNCTIONS 860#if CORO_PREFER_PERL_FUNCTIONS
606# define coro_init_stacks init_stacks 861# define coro_init_stacks(thx) init_stacks ()
607#else 862#else
608static void 863static void
609coro_init_stacks (pTHX) 864coro_init_stacks (pTHX)
610{ 865{
611 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() */
612 PL_curstackinfo->si_type = PERLSI_MAIN; 867 PL_curstackinfo->si_type = PERLSI_MAIN;
613 PL_curstack = PL_curstackinfo->si_stack; 868 PL_curstack = PL_curstackinfo->si_stack;
614 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 869 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
615 870
616 PL_stack_base = AvARRAY(PL_curstack); 871 PL_stack_base = AvARRAY(PL_curstack);
… …
631#endif 886#endif
632 887
633 New(54,PL_scopestack,8,I32); 888 New(54,PL_scopestack,8,I32);
634 PL_scopestack_ix = 0; 889 PL_scopestack_ix = 0;
635 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
636 894
637 New(54,PL_savestack,24,ANY); 895 New(54,PL_savestack,24,ANY);
638 PL_savestack_ix = 0; 896 PL_savestack_ix = 0;
639 PL_savestack_max = 24; 897 PL_savestack_max = 24;
640 898
… …
668 } 926 }
669 927
670 Safefree (PL_tmps_stack); 928 Safefree (PL_tmps_stack);
671 Safefree (PL_markstack); 929 Safefree (PL_markstack);
672 Safefree (PL_scopestack); 930 Safefree (PL_scopestack);
931#if HAS_SCOPESTACK_NAME
932 Safefree (PL_scopestack_name);
933#endif
673 Safefree (PL_savestack); 934 Safefree (PL_savestack);
674#if !PERL_VERSION_ATLEAST (5,10,0) 935#if !PERL_VERSION_ATLEAST (5,10,0)
675 Safefree (PL_retstack); 936 Safefree (PL_retstack);
676#endif 937#endif
677} 938}
678 939
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
679static size_t 949static size_t
680coro_rss (pTHX_ struct coro *coro) 950coro_rss (pTHX_ struct coro *coro)
681{ 951{
682 size_t rss = sizeof (*coro); 952 size_t rss = sizeof (*coro);
683 953
684 if (coro->mainstack) 954 if (coro->mainstack)
685 { 955 {
686 perl_slots tmp_slot;
687 perl_slots *slot;
688
689 if (coro->flags & CF_RUNNING) 956 if (coro->flags & CF_RUNNING)
690 { 957 {
691 slot = &tmp_slot; 958 #define SYM(sym) PL_ ## sym
692 959 CORO_RSS;
693 #define VAR(name,type) slot->name = PL_ ## name;
694 # include "state.h"
695 #undef VAR 960 #undef SYM
696 } 961 }
697 else 962 else
698 slot = coro->slot;
699
700 if (slot)
701 { 963 {
702 rss += sizeof (slot->curstackinfo); 964 #define SYM(sym) coro->slot->sym
703 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 965 CORO_RSS;
704 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 966 #undef SYM
705 rss += slot->tmps_max * sizeof (SV *);
706 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
707 rss += slot->scopestack_max * sizeof (I32);
708 rss += slot->savestack_max * sizeof (ANY);
709
710#if !PERL_VERSION_ATLEAST (5,10,0)
711 rss += slot->retstack_max * sizeof (OP *);
712#endif
713 } 967 }
714 } 968 }
715 969
716 return rss; 970 return rss;
717}
718
719/** set stacklevel support **************************************************/
720
721/* we sometimes need to create the effect of pp_slf calling us */
722#define SLF_HEAD (void)0
723/* we sometimes need to create the effect of leaving via pp_slf */
724#define SLF_TAIL slf_tail (aTHX)
725
726INLINE void
727slf_tail (pTHX)
728{
729 dSP;
730 SV **bot = SP;
731
732 int gimme = GIMME_V;
733
734 /* make sure we put something on the stack in scalar context */
735 if (gimme == G_SCALAR)
736 {
737 if (sp == bot)
738 XPUSHs (&PL_sv_undef);
739
740 SP = bot + 1;
741 }
742
743 PUTBACK;
744} 971}
745 972
746/** coroutine stack handling ************************************************/ 973/** coroutine stack handling ************************************************/
747 974
748static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 975static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
757#endif 984#endif
758 985
759/* 986/*
760 * This overrides the default magic get method of %SIG elements. 987 * This overrides the default magic get method of %SIG elements.
761 * 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
762 * 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),
763 * readback here. 990 * we just provide our own readback here.
764 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
765 * not expecting this to actually change the hook. This is a potential problem
766 * when a schedule happens then, but we ignore this.
767 */ 991 */
768static int 992static int ecb_cold
769coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 993coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
770{ 994{
771 const char *s = MgPV_nolen_const (mg); 995 const char *s = MgPV_nolen_const (mg);
772 996
773 if (*s == '_') 997 if (*s == '_')
… …
777 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1001 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
778 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1002 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
779 1003
780 if (svp) 1004 if (svp)
781 { 1005 {
782 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);
783 return 0; 1016 return 0;
784 } 1017 }
785 } 1018 }
786 1019
787 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1020 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
788} 1021}
789 1022
790static int 1023static int ecb_cold
791coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1024coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
792{ 1025{
793 const char *s = MgPV_nolen_const (mg); 1026 const char *s = MgPV_nolen_const (mg);
794 1027
795 if (*s == '_') 1028 if (*s == '_')
… …
809 } 1042 }
810 1043
811 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1044 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
812} 1045}
813 1046
814static int 1047static int ecb_cold
815coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1048coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
816{ 1049{
817 const char *s = MgPV_nolen_const (mg); 1050 const char *s = MgPV_nolen_const (mg);
818 1051
819 if (*s == '_') 1052 if (*s == '_')
… …
824 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1057 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
825 1058
826 if (svp) 1059 if (svp)
827 { 1060 {
828 SV *old = *svp; 1061 SV *old = *svp;
829 *svp = newSVsv (sv); 1062 *svp = SvOK (sv) ? newSVsv (sv) : 0;
830 SvREFCNT_dec (old); 1063 SvREFCNT_dec (old);
831 return 0; 1064 return 0;
832 } 1065 }
833 } 1066 }
834 1067
835 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1068 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
836} 1069}
837 1070
838static void 1071static void
1072prepare_nop (pTHX_ struct coro_transfer_args *ta)
1073{
1074 /* kind of mega-hacky, but works */
1075 ta->next = ta->prev = (struct coro *)ta;
1076}
1077
1078static int
1079slf_check_nop (pTHX_ struct CoroSLF *frame)
1080{
1081 return 0;
1082}
1083
1084static int
1085slf_check_repeat (pTHX_ struct CoroSLF *frame)
1086{
1087 return 1;
1088}
1089
1090static UNOP init_perl_op;
1091
1092ecb_noinline static void /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1093init_perl (pTHX_ struct coro *coro)
840{ 1094{
841 /* 1095 /*
842 * emulate part of the perl startup here. 1096 * emulate part of the perl startup here.
843 */ 1097 */
844 coro_init_stacks (aTHX); 1098 coro_init_stacks (aTHX);
845 1099
846 PL_runops = RUNOPS_DEFAULT; 1100 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1101 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1102 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1103 PL_comppad = 0;
1104 PL_comppad_name = 0;
1105 PL_comppad_name_fill = 0;
1106 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1107 PL_curpm = 0;
851 PL_curpad = 0; 1108 PL_curpad = 0;
852 PL_localizing = 0; 1109 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1110 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1111#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1112 PL_parser = 0;
857#endif 1113#endif
1114 PL_hints = 0;
858 1115
859 /* recreate the die/warn hooks */ 1116 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1117 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1118 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1119
863 GvSV (PL_defgv) = newSV (0); 1120 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1121 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1122 GvSV (PL_errgv) = newSV (0);
866 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;
867 PL_rs = newSVsv (GvSV (irsgv)); 1125 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1126 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1127
870 { 1128 {
871 dSP; 1129 dSP;
872 UNOP myop; 1130 UNOP myop;
873 1131
874 Zero (&myop, 1, UNOP); 1132 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 1133 myop.op_next = Nullop;
1134 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 1135 myop.op_flags = OPf_WANT_VOID;
877 1136
878 PUSHMARK (SP); 1137 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1138 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 1139 PUTBACK;
881 PL_op = (OP *)&myop; 1140 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1141 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 1142 }
885 1143
886 /* 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
887 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1145 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 * so we have to emulate entering pp_set_stacklevel here.
889 */ 1146 */
890 SLF_HEAD; 1147 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
891} 1148 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1149 slf_frame.destroy = 0;
892 1150
1151 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1152 init_perl_op.op_next = PL_op;
1153 init_perl_op.op_type = OP_ENTERSUB;
1154 init_perl_op.op_ppaddr = pp_slf;
1155 /* no flags etc. required, as an init function won't be called */
1156
1157 PL_op = (OP *)&init_perl_op;
1158
1159 /* copy throw, in case it was set before init_perl */
1160 CORO_THROW = coro->except;
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
893static void 1171static void
894coro_destruct (pTHX_ struct coro *coro) 1172coro_unwind_stacks (pTHX)
895{ 1173{
896 if (!IN_DESTRUCT) 1174 if (!IN_DESTRUCT)
897 { 1175 {
898 /* restore all saved variables and stuff */ 1176 /* restore all saved variables and stuff */
899 LEAVE_SCOPE (0); 1177 LEAVE_SCOPE (0);
… …
907 POPSTACK_TO (PL_mainstack); 1185 POPSTACK_TO (PL_mainstack);
908 1186
909 /* unwind main stack */ 1187 /* unwind main stack */
910 dounwind (-1); 1188 dounwind (-1);
911 } 1189 }
1190}
912 1191
913 SvREFCNT_dec (GvSV (PL_defgv)); 1192static void
914 SvREFCNT_dec (GvAV (PL_defgv)); 1193destroy_perl (pTHX_ struct coro *coro)
915 SvREFCNT_dec (GvSV (PL_errgv)); 1194{
916 SvREFCNT_dec (PL_defoutgv); 1195 SV *svf [9];
917 SvREFCNT_dec (PL_rs);
918 SvREFCNT_dec (GvSV (irsgv));
919 1196
920 SvREFCNT_dec (PL_diehook);
921 SvREFCNT_dec (PL_warnhook);
922 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
923 SvREFCNT_dec (coro->saved_deffh); 1240 SvREFCNT_dec (coro->saved_deffh);
924 SvREFCNT_dec (coro->throw); 1241 SvREFCNT_dec (coro->rouse_cb);
925 1242 SvREFCNT_dec (coro->invoke_cb);
926 coro_destruct_stacks (aTHX); 1243 SvREFCNT_dec (coro->invoke_av);
1244 }
927} 1245}
928 1246
929INLINE void 1247ecb_inline void
930free_coro_mortal (pTHX) 1248free_coro_mortal (pTHX)
931{ 1249{
932 if (expect_true (coro_mortal)) 1250 if (ecb_expect_true (coro_mortal))
933 { 1251 {
934 SvREFCNT_dec (coro_mortal); 1252 SvREFCNT_dec ((SV *)coro_mortal);
935 coro_mortal = 0; 1253 coro_mortal = 0;
936 } 1254 }
937} 1255}
938 1256
939static int 1257static int
940runops_trace (pTHX) 1258runops_trace (pTHX)
941{ 1259{
942 COP *oldcop = 0; 1260 COP *oldcop = 0;
943 int oldcxix = -2; 1261 int oldcxix = -2;
944 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
945 coro_cctx *cctx = coro->cctx;
946 1262
947 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1263 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
948 { 1264 {
949 PERL_ASYNC_CHECK (); 1265 PERL_ASYNC_CHECK ();
950 1266
951 if (cctx->flags & CC_TRACE_ALL) 1267 if (cctx_current->flags & CC_TRACE_ALL)
952 { 1268 {
953 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)
954 { 1270 {
955 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1271 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
956 SV **bot, **top; 1272 SV **bot, **top;
957 AV *av = newAV (); /* return values */ 1273 AV *av = newAV (); /* return values */
958 SV **cb; 1274 SV **cb;
… …
995 1311
996 if (PL_curcop != &PL_compiling) 1312 if (PL_curcop != &PL_compiling)
997 { 1313 {
998 SV **cb; 1314 SV **cb;
999 1315
1000 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1316 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1001 { 1317 {
1002 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1318 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1003 1319
1004 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1320 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1005 { 1321 {
1006 runops_proc_t old_runops = PL_runops;
1007 dSP; 1322 dSP;
1008 GV *gv = CvGV (cx->blk_sub.cv); 1323 GV *gv = CvGV (cx->blk_sub.cv);
1009 SV *fullname = sv_2mortal (newSV (0)); 1324 SV *fullname = sv_2mortal (newSV (0));
1010 1325
1011 if (isGV (gv)) 1326 if (isGV (gv))
… …
1016 SAVETMPS; 1331 SAVETMPS;
1017 EXTEND (SP, 3); 1332 EXTEND (SP, 3);
1018 PUSHMARK (SP); 1333 PUSHMARK (SP);
1019 PUSHs (&PL_sv_yes); 1334 PUSHs (&PL_sv_yes);
1020 PUSHs (fullname); 1335 PUSHs (fullname);
1021 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1336 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1022 PUTBACK; 1337 PUTBACK;
1023 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1338 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1024 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1339 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1025 SPAGAIN; 1340 SPAGAIN;
1026 FREETMPS; 1341 FREETMPS;
… …
1029 } 1344 }
1030 1345
1031 oldcxix = cxstack_ix; 1346 oldcxix = cxstack_ix;
1032 } 1347 }
1033 1348
1034 if (cctx->flags & CC_TRACE_LINE) 1349 if (cctx_current->flags & CC_TRACE_LINE)
1035 { 1350 {
1036 dSP; 1351 dSP;
1037 1352
1038 PL_runops = RUNOPS_DEFAULT; 1353 PL_runops = RUNOPS_DEFAULT;
1039 ENTER; 1354 ENTER;
… …
1058 1373
1059 TAINT_NOT; 1374 TAINT_NOT;
1060 return 0; 1375 return 0;
1061} 1376}
1062 1377
1378static struct CoroSLF cctx_ssl_frame;
1379
1063static void 1380static void
1064prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1381slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1382{
1066 ta->prev = (struct coro *)cctx;
1067 ta->next = 0; 1383 ta->prev = 0;
1068} 1384}
1069 1385
1070/* inject a fake call to Coro::State::_cctx_init into the execution */ 1386static int
1071/* _cctx_init should be careful, as it could be called at almost any time */ 1387slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072/* during execution of a perl program */
1073/* also initialises PL_top_env */
1074static void NOINLINE
1075cctx_prepare (pTHX_ coro_cctx *cctx)
1076{ 1388{
1077 dSP; 1389 *frame = cctx_ssl_frame;
1078 UNOP myop;
1079 1390
1391 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1392}
1393
1394/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1395static void ecb_noinline
1396cctx_prepare (pTHX)
1397{
1080 PL_top_env = &PL_start_env; 1398 PL_top_env = &PL_start_env;
1081 1399
1082 if (cctx->flags & CC_TRACE) 1400 if (cctx_current->flags & CC_TRACE)
1083 PL_runops = runops_trace; 1401 PL_runops = runops_trace;
1084 1402
1085 Zero (&myop, 1, UNOP); 1403 /* we already must be executing an SLF op, there is no other valid way
1086 myop.op_next = PL_op; 1404 * that can lead to creation of a new cctx */
1087 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1405 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1406 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1088 1407
1089 PUSHMARK (SP); 1408 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1090 EXTEND (SP, 2); 1409 cctx_ssl_frame = slf_frame;
1091 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1410
1092 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1411 slf_frame.prepare = slf_prepare_set_stacklevel;
1093 PUTBACK; 1412 slf_frame.check = slf_check_set_stacklevel;
1094 PL_op = (OP *)&myop; 1413}
1095 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1414
1096 SPAGAIN; 1415/* try to exit the same way perl's main function would do */
1416/* we do not bother resetting the environment or other things *7
1417/* that are not, uhm, essential */
1418/* this obviously also doesn't work when perl is embedded */
1419static void ecb_noinline ecb_cold
1420perlish_exit (void)
1421{
1422 int exitstatus = perl_destruct (PL_curinterp);
1423 perl_free (PL_curinterp);
1424 exit (exitstatus);
1097} 1425}
1098 1426
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1427/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1428ecb_inline void
1101transfer_tail (pTHX) 1429transfer_tail (pTHX)
1102{ 1430{
1103 struct coro *next = (struct coro *)transfer_next;
1104 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1105 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1106
1107 free_coro_mortal (aTHX); 1431 free_coro_mortal (aTHX);
1108 UNLOCK;
1109
1110 if (expect_false (next->throw))
1111 {
1112 SV *exception = sv_2mortal (next->throw);
1113
1114 next->throw = 0;
1115 sv_setsv (ERRSV, exception);
1116 croak (0);
1117 }
1118} 1432}
1119 1433
1120/* 1434/*
1121 * this is a _very_ stripped down perl interpreter ;) 1435 * this is a _very_ stripped down perl interpreter ;)
1122 */ 1436 */
… …
1129# endif 1443# endif
1130#endif 1444#endif
1131 { 1445 {
1132 dTHX; 1446 dTHX;
1133 1447
1134 /* we are the alternative tail to pp_set_stacklevel */ 1448 /* normally we would need to skip the entersub here */
1135 /* so do the same things here */ 1449 /* not doing so will re-execute it, which is exactly what we want */
1136 SLF_TAIL;
1137
1138 /* we now skip the op that did lead to transfer() */
1139 PL_op = PL_op->op_next; 1450 /* PL_nop = PL_nop->op_next */
1140 1451
1141 /* inject a fake subroutine call to cctx_init */ 1452 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1453 cctx_prepare (aTHX);
1143 1454
1144 /* cctx_run is the alternative tail of transfer() */ 1455 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1456 transfer_tail (aTHX);
1146 1457
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1458 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1459 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1460 perl_run (PL_curinterp);
1461 /*
1462 * Unfortunately, there is no way to get at the return values of the
1463 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1464 * runtime errors here, as this is just a random interpreter, not a thread.
1465 */
1150 1466
1151 /* 1467 /*
1152 * If perl-run returns we assume exit() was being called or the coro 1468 * If perl-run returns we assume exit() was being called or the coro
1153 * fell off the end, which seems to be the only valid (non-bug) 1469 * fell off the end, which seems to be the only valid (non-bug)
1154 * reason for perl_run to return. We try to exit by jumping to the 1470 * reason for perl_run to return. We try to mimic whatever perl is normally
1155 * bootstrap-time "top" top_env, as we cannot restore the "main" 1471 * doing in that case. YMMV.
1156 * coroutine as Coro has no such concept
1157 */ 1472 */
1158 PL_top_env = main_top_env; 1473 perlish_exit ();
1159 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1160 } 1474 }
1161} 1475}
1162 1476
1163static coro_cctx * 1477static coro_cctx *
1164cctx_new () 1478cctx_new (void)
1165{ 1479{
1166 coro_cctx *cctx; 1480 coro_cctx *cctx;
1167 1481
1168 ++cctx_count; 1482 ++cctx_count;
1169 New (0, cctx, 1, coro_cctx); 1483 New (0, cctx, 1, coro_cctx);
… …
1175 return cctx; 1489 return cctx;
1176} 1490}
1177 1491
1178/* create a new cctx only suitable as source */ 1492/* create a new cctx only suitable as source */
1179static coro_cctx * 1493static coro_cctx *
1180cctx_new_empty () 1494cctx_new_empty (void)
1181{ 1495{
1182 coro_cctx *cctx = cctx_new (); 1496 coro_cctx *cctx = cctx_new ();
1183 1497
1184 cctx->sptr = 0; 1498 cctx->sptr = 0;
1185 coro_create (&cctx->cctx, 0, 0, 0, 0); 1499 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1187 return cctx; 1501 return cctx;
1188} 1502}
1189 1503
1190/* create a new cctx suitable as destination/running a perl interpreter */ 1504/* create a new cctx suitable as destination/running a perl interpreter */
1191static coro_cctx * 1505static coro_cctx *
1192cctx_new_run () 1506cctx_new_run (void)
1193{ 1507{
1194 coro_cctx *cctx = cctx_new (); 1508 coro_cctx *cctx = cctx_new ();
1195 void *stack_start; 1509 void *stack_start;
1196 size_t stack_size; 1510 size_t stack_size;
1197 1511
1198#if HAVE_MMAP 1512#if HAVE_MMAP
1199 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1513 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1200 /* mmap supposedly does allocate-on-write for us */ 1514 /* mmap supposedly does allocate-on-write for us */
1201 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1515 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, 0, 0);
1202 1516
1203 if (cctx->sptr != (void *)-1) 1517 if (cctx->sptr != (void *)-1)
1204 { 1518 {
1205 #if CORO_STACKGUARD 1519 #if CORO_STACKGUARD
1206 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1520 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
… …
1238cctx_destroy (coro_cctx *cctx) 1552cctx_destroy (coro_cctx *cctx)
1239{ 1553{
1240 if (!cctx) 1554 if (!cctx)
1241 return; 1555 return;
1242 1556
1557 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1558
1243 --cctx_count; 1559 --cctx_count;
1244 coro_destroy (&cctx->cctx); 1560 coro_destroy (&cctx->cctx);
1245 1561
1246 /* coro_transfer creates new, empty cctx's */ 1562 /* coro_transfer creates new, empty cctx's */
1247 if (cctx->sptr) 1563 if (cctx->sptr)
… …
1265#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1581#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1266 1582
1267static coro_cctx * 1583static coro_cctx *
1268cctx_get (pTHX) 1584cctx_get (pTHX)
1269{ 1585{
1270 while (expect_true (cctx_first)) 1586 while (ecb_expect_true (cctx_first))
1271 { 1587 {
1272 coro_cctx *cctx = cctx_first; 1588 coro_cctx *cctx = cctx_first;
1273 cctx_first = cctx->next; 1589 cctx_first = cctx->next;
1274 --cctx_idle; 1590 --cctx_idle;
1275 1591
1276 if (expect_true (!CCTX_EXPIRED (cctx))) 1592 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1277 return cctx; 1593 return cctx;
1278 1594
1279 cctx_destroy (cctx); 1595 cctx_destroy (cctx);
1280 } 1596 }
1281 1597
… …
1286cctx_put (coro_cctx *cctx) 1602cctx_put (coro_cctx *cctx)
1287{ 1603{
1288 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1604 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1289 1605
1290 /* free another cctx if overlimit */ 1606 /* free another cctx if overlimit */
1291 if (expect_false (cctx_idle >= cctx_max_idle)) 1607 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1292 { 1608 {
1293 coro_cctx *first = cctx_first; 1609 coro_cctx *first = cctx_first;
1294 cctx_first = first->next; 1610 cctx_first = first->next;
1295 --cctx_idle; 1611 --cctx_idle;
1296 1612
… …
1305/** coroutine switching *****************************************************/ 1621/** coroutine switching *****************************************************/
1306 1622
1307static void 1623static void
1308transfer_check (pTHX_ struct coro *prev, struct coro *next) 1624transfer_check (pTHX_ struct coro *prev, struct coro *next)
1309{ 1625{
1626 /* TODO: throwing up here is considered harmful */
1627
1310 if (expect_true (prev != next)) 1628 if (ecb_expect_true (prev != next))
1311 { 1629 {
1312 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1630 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1313 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1631 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1314 1632
1315 if (expect_false (next->flags & CF_RUNNING)) 1633 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1316 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1317
1318 if (expect_false (next->flags & CF_DESTROYED))
1319 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1634 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1320 1635
1321#if !PERL_VERSION_ATLEAST (5,10,0) 1636#if !PERL_VERSION_ATLEAST (5,10,0)
1322 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1637 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1323 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1638 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1324#endif 1639#endif
1325 } 1640 }
1326} 1641}
1327 1642
1328/* always use the TRANSFER macro */ 1643/* always use the TRANSFER macro */
1329static void NOINLINE 1644static void ecb_noinline /* noinline so we have a fixed stackframe */
1330transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1645transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1331{ 1646{
1332 dSTACKLEVEL; 1647 dSTACKLEVEL;
1333 1648
1334 /* sometimes transfer is only called to set idle_sp */ 1649 /* sometimes transfer is only called to set idle_sp */
1335 if (expect_false (!next)) 1650 if (ecb_expect_false (!prev))
1336 { 1651 {
1337 ((coro_cctx *)prev)->idle_sp = stacklevel; 1652 cctx_current->idle_sp = STACKLEVEL;
1338 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1653 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1339 } 1654 }
1340 else if (expect_true (prev != next)) 1655 else if (ecb_expect_true (prev != next))
1341 { 1656 {
1342 coro_cctx *prev__cctx; 1657 coro_cctx *cctx_prev;
1343 1658
1344 if (expect_false (prev->flags & CF_NEW)) 1659 if (ecb_expect_false (prev->flags & CF_NEW))
1345 { 1660 {
1346 /* create a new empty/source context */ 1661 /* create a new empty/source context */
1347 prev->cctx = cctx_new_empty ();
1348 prev->flags &= ~CF_NEW; 1662 prev->flags &= ~CF_NEW;
1349 prev->flags |= CF_RUNNING; 1663 prev->flags |= CF_RUNNING;
1350 } 1664 }
1351 1665
1352 prev->flags &= ~CF_RUNNING; 1666 prev->flags &= ~CF_RUNNING;
1353 next->flags |= CF_RUNNING; 1667 next->flags |= CF_RUNNING;
1354 1668
1355 LOCK;
1356
1357 /* first get rid of the old state */ 1669 /* first get rid of the old state */
1358 save_perl (aTHX_ prev); 1670 save_perl (aTHX_ prev);
1359 1671
1360 if (expect_false (next->flags & CF_NEW)) 1672 if (ecb_expect_false (next->flags & CF_NEW))
1361 { 1673 {
1362 /* need to start coroutine */ 1674 /* need to start coroutine */
1363 next->flags &= ~CF_NEW; 1675 next->flags &= ~CF_NEW;
1364 /* setup coroutine call */ 1676 /* setup coroutine call */
1365 coro_setup (aTHX_ next); 1677 init_perl (aTHX_ next);
1366 } 1678 }
1367 else 1679 else
1368 load_perl (aTHX_ next); 1680 load_perl (aTHX_ next);
1369 1681
1370 prev__cctx = prev->cctx;
1371
1372 /* possibly untie and reuse the cctx */ 1682 /* possibly untie and reuse the cctx */
1373 if (expect_true ( 1683 if (ecb_expect_true (
1374 prev__cctx->idle_sp == stacklevel 1684 cctx_current->idle_sp == STACKLEVEL
1375 && !(prev__cctx->flags & CC_TRACE) 1685 && !(cctx_current->flags & CC_TRACE)
1376 && !force_cctx 1686 && !force_cctx
1377 )) 1687 ))
1378 { 1688 {
1379 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1689 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1380 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1690 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1381 1691
1382 prev->cctx = 0;
1383
1384 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1692 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1385 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1693 /* without this the next cctx_get might destroy the running cctx while still in use */
1386 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1694 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1387 if (!next->cctx) 1695 if (ecb_expect_true (!next->cctx))
1388 next->cctx = cctx_get (aTHX); 1696 next->cctx = cctx_get (aTHX);
1389 1697
1390 cctx_put (prev__cctx); 1698 cctx_put (cctx_current);
1391 } 1699 }
1700 else
1701 prev->cctx = cctx_current;
1392 1702
1393 ++next->usecount; 1703 ++next->usecount;
1394 1704
1395 if (expect_true (!next->cctx)) 1705 cctx_prev = cctx_current;
1396 next->cctx = cctx_get (aTHX); 1706 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1397 1707
1398 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1708 next->cctx = 0;
1399 transfer_next = next;
1400 1709
1401 if (expect_false (prev__cctx != next->cctx)) 1710 if (ecb_expect_false (cctx_prev != cctx_current))
1402 { 1711 {
1403 prev__cctx->top_env = PL_top_env; 1712 cctx_prev->top_env = PL_top_env;
1404 PL_top_env = next->cctx->top_env; 1713 PL_top_env = cctx_current->top_env;
1405 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1714 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1406 } 1715 }
1407 1716
1408 transfer_tail (aTHX); 1717 transfer_tail (aTHX);
1409 } 1718 }
1410} 1719}
… …
1412#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1721#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) 1722#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1414 1723
1415/** high level stuff ********************************************************/ 1724/** high level stuff ********************************************************/
1416 1725
1726/* this function is actually Coro, not Coro::State, but we call it from here */
1727/* because it is convenient - but it hasn't been declared yet for that reason */
1417static int 1728static void
1729coro_call_on_destroy (pTHX_ struct coro *coro);
1730
1731static void
1418coro_state_destroy (pTHX_ struct coro *coro) 1732coro_state_destroy (pTHX_ struct coro *coro)
1419{ 1733{
1420 if (coro->flags & CF_DESTROYED) 1734 if (coro->flags & CF_ZOMBIE)
1421 return 0; 1735 return;
1422 1736
1737 slf_destroy (aTHX_ coro);
1738
1423 coro->flags |= CF_DESTROYED; 1739 coro->flags |= CF_ZOMBIE;
1424 1740
1425 if (coro->flags & CF_READY) 1741 if (coro->flags & CF_READY)
1426 { 1742 {
1427 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1743 /* reduce nready, as destroying a ready coro effectively unreadies it */
1428 /* alternative: look through all ready queues and remove the coro */ 1744 /* alternative: look through all ready queues and remove the coro */
1429 LOCK;
1430 --coro_nready; 1745 --coro_nready;
1431 UNLOCK;
1432 } 1746 }
1433 else 1747 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1748 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435
1436 if (coro->mainstack && coro->mainstack != main_mainstack)
1437 {
1438 struct coro temp;
1439
1440 if (coro->flags & CF_RUNNING)
1441 croak ("FATAL: tried to destroy currently running coroutine");
1442
1443 save_perl (aTHX_ &temp);
1444 load_perl (aTHX_ coro);
1445
1446 coro_destruct (aTHX_ coro);
1447
1448 load_perl (aTHX_ &temp);
1449
1450 coro->slot = 0;
1451 }
1452
1453 cctx_destroy (coro->cctx);
1454 SvREFCNT_dec (coro->args);
1455 1749
1456 if (coro->next) coro->next->prev = coro->prev; 1750 if (coro->next) coro->next->prev = coro->prev;
1457 if (coro->prev) coro->prev->next = coro->next; 1751 if (coro->prev) coro->prev->next = coro->next;
1458 if (coro == coro_first) coro_first = coro->next; 1752 if (coro == coro_first) coro_first = coro->next;
1459 1753
1460 return 1; 1754 if (coro->mainstack
1755 && coro->mainstack != main_mainstack
1756 && coro->slot
1757 && !PL_dirty)
1758 destroy_perl (aTHX_ coro);
1759
1760 cctx_destroy (coro->cctx);
1761 SvREFCNT_dec (coro->startcv);
1762 SvREFCNT_dec (coro->args);
1763 SvREFCNT_dec (coro->swap_sv);
1764 SvREFCNT_dec (CORO_THROW);
1765
1766 coro_call_on_destroy (aTHX_ coro);
1767
1768 /* more destruction mayhem in coro_state_free */
1461} 1769}
1462 1770
1463static int 1771static int
1464coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1772coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1465{ 1773{
1466 struct coro *coro = (struct coro *)mg->mg_ptr; 1774 struct coro *coro = (struct coro *)mg->mg_ptr;
1467 mg->mg_ptr = 0; 1775 mg->mg_ptr = 0;
1468 1776
1469 coro->hv = 0;
1470
1471 if (--coro->refcnt < 0)
1472 {
1473 coro_state_destroy (aTHX_ coro); 1777 coro_state_destroy (aTHX_ coro);
1778 SvREFCNT_dec (coro->on_destroy);
1779 SvREFCNT_dec (coro->status);
1780
1474 Safefree (coro); 1781 Safefree (coro);
1475 }
1476 1782
1477 return 0; 1783 return 0;
1478} 1784}
1479 1785
1480static int 1786static int ecb_cold
1481coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1787coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1482{ 1788{
1483 struct coro *coro = (struct coro *)mg->mg_ptr; 1789 /* called when perl clones the current process the slow way (windows process emulation) */
1484 1790 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1485 ++coro->refcnt; 1791 mg->mg_ptr = 0;
1792 mg->mg_virtual = 0;
1486 1793
1487 return 0; 1794 return 0;
1488} 1795}
1489 1796
1490static MGVTBL coro_state_vtbl = { 1797static MGVTBL coro_state_vtbl = {
… …
1497# define MGf_DUP 0 1804# define MGf_DUP 0
1498#endif 1805#endif
1499}; 1806};
1500 1807
1501static void 1808static void
1502prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1809prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1503{ 1810{
1504 ta->prev = SvSTATE (prev_sv); 1811 ta->prev = SvSTATE (prev_sv);
1505 ta->next = SvSTATE (next_sv); 1812 ta->next = SvSTATE (next_sv);
1506 TRANSFER_CHECK (*ta); 1813 TRANSFER_CHECK (*ta);
1507} 1814}
1508 1815
1509static void 1816static void
1510api_transfer (SV *prev_sv, SV *next_sv) 1817api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1511{ 1818{
1512 dTHX;
1513 struct transfer_args ta; 1819 struct coro_transfer_args ta;
1514 1820
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1821 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1822 TRANSFER (ta, 1);
1517} 1823}
1518 1824
1519/** Coro ********************************************************************/ 1825/** Coro ********************************************************************/
1520 1826
1521static void 1827ecb_inline void
1522coro_enq (pTHX_ SV *coro_sv) 1828coro_enq (pTHX_ struct coro *coro)
1523{ 1829{
1524 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1830 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1525}
1526 1831
1527static SV * 1832 SvREFCNT_inc_NN (coro->hv);
1833
1834 coro->next_ready = 0;
1835 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1836 ready [1] = coro;
1837}
1838
1839ecb_inline struct coro *
1528coro_deq (pTHX) 1840coro_deq (pTHX)
1529{ 1841{
1530 int prio; 1842 int prio;
1531 1843
1532 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1844 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1533 if (AvFILLp (coro_ready [prio]) >= 0) 1845 {
1534 return av_shift (coro_ready [prio]); 1846 struct coro **ready = coro_ready [prio];
1847
1848 if (ready [0])
1849 {
1850 struct coro *coro = ready [0];
1851 ready [0] = coro->next_ready;
1852 return coro;
1853 }
1854 }
1535 1855
1536 return 0; 1856 return 0;
1537} 1857}
1538 1858
1859static void
1860invoke_sv_ready_hook_helper (void)
1861{
1862 dTHX;
1863 dSP;
1864
1865 ENTER;
1866 SAVETMPS;
1867
1868 PUSHMARK (SP);
1869 PUTBACK;
1870 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1871
1872 FREETMPS;
1873 LEAVE;
1874}
1875
1539static int 1876static int
1540api_ready (SV *coro_sv) 1877api_ready (pTHX_ SV *coro_sv)
1541{ 1878{
1542 dTHX;
1543 struct coro *coro;
1544 SV *sv_hook;
1545 void (*xs_hook)(void);
1546
1547 if (SvROK (coro_sv))
1548 coro_sv = SvRV (coro_sv);
1549
1550 coro = SvSTATE (coro_sv); 1879 struct coro *coro = SvSTATE (coro_sv);
1551 1880
1552 if (coro->flags & CF_READY) 1881 if (coro->flags & CF_READY)
1553 return 0; 1882 return 0;
1554 1883
1555 coro->flags |= CF_READY; 1884 coro->flags |= CF_READY;
1556 1885
1557 LOCK; 1886 coro_enq (aTHX_ coro);
1558 1887
1559 sv_hook = coro_nready ? 0 : coro_readyhook; 1888 if (!coro_nready++)
1560 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1889 if (coroapi.readyhook)
1561 1890 coroapi.readyhook ();
1562 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1563 ++coro_nready;
1564
1565 UNLOCK;
1566
1567 if (sv_hook)
1568 {
1569 dSP;
1570
1571 ENTER;
1572 SAVETMPS;
1573
1574 PUSHMARK (SP);
1575 PUTBACK;
1576 call_sv (sv_hook, G_DISCARD);
1577 SPAGAIN;
1578
1579 FREETMPS;
1580 LEAVE;
1581 }
1582
1583 if (xs_hook)
1584 xs_hook ();
1585 1891
1586 return 1; 1892 return 1;
1587} 1893}
1588 1894
1589static int 1895static int
1590api_is_ready (SV *coro_sv) 1896api_is_ready (pTHX_ SV *coro_sv)
1591{ 1897{
1592 dTHX;
1593
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1898 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1899}
1596 1900
1597INLINE void 1901/* expects to own a reference to next->hv */
1902ecb_inline void
1598prepare_schedule (pTHX_ struct transfer_args *ta) 1903prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1904{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 LOCK;
1605 next_sv = coro_deq (aTHX);
1606
1607 /* nothing to schedule: call the idle handler */
1608 if (expect_false (!next_sv))
1609 {
1610 dSP;
1611 UNLOCK;
1612
1613 ENTER;
1614 SAVETMPS;
1615
1616 PUSHMARK (SP);
1617 PUTBACK;
1618 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1619 SPAGAIN;
1620
1621 FREETMPS;
1622 LEAVE;
1623 continue;
1624 }
1625
1626 ta->next = SvSTATE (next_sv);
1627
1628 /* cannot transfer to destroyed coros, skip and look for next */
1629 if (expect_false (ta->next->flags & CF_DESTROYED))
1630 {
1631 UNLOCK;
1632 SvREFCNT_dec (next_sv);
1633 /* coro_nready has already been taken care of by destroy */
1634 continue;
1635 }
1636
1637 --coro_nready;
1638 UNLOCK;
1639 break;
1640 }
1641
1642 /* free this only after the transfer */
1643 prev_sv = SvRV (coro_current); 1905 SV *prev_sv = SvRV (coro_current);
1906
1644 ta->prev = SvSTATE (prev_sv); 1907 ta->prev = SvSTATE_hv (prev_sv);
1908 ta->next = next;
1909
1645 TRANSFER_CHECK (*ta); 1910 TRANSFER_CHECK (*ta);
1646 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1911
1647 ta->next->flags &= ~CF_READY;
1648 SvRV_set (coro_current, next_sv); 1912 SvRV_set (coro_current, (SV *)next->hv);
1649 1913
1650 LOCK;
1651 free_coro_mortal (aTHX); 1914 free_coro_mortal (aTHX);
1652 coro_mortal = prev_sv; 1915 coro_mortal = prev_sv;
1653 UNLOCK;
1654} 1916}
1655 1917
1656INLINE void 1918static void
1919prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1920{
1921 for (;;)
1922 {
1923 struct coro *next = coro_deq (aTHX);
1924
1925 if (ecb_expect_true (next))
1926 {
1927 /* cannot transfer to destroyed coros, skip and look for next */
1928 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1929 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1930 else
1931 {
1932 next->flags &= ~CF_READY;
1933 --coro_nready;
1934
1935 prepare_schedule_to (aTHX_ ta, next);
1936 break;
1937 }
1938 }
1939 else
1940 {
1941 /* nothing to schedule: call the idle handler */
1942 if (SvROK (sv_idle)
1943 && SvOBJECT (SvRV (sv_idle)))
1944 {
1945 if (SvRV (sv_idle) == SvRV (coro_current))
1946 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1947
1948 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1949 api_ready (aTHX_ SvRV (sv_idle));
1950 --coro_nready;
1951 }
1952 else
1953 {
1954 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1955 dSP;
1956
1957 ENTER;
1958 SAVETMPS;
1959
1960 PUSHMARK (SP);
1961 PUTBACK;
1962 call_sv (sv_idle, G_VOID | G_DISCARD);
1963
1964 FREETMPS;
1965 LEAVE;
1966 }
1967 }
1968 }
1969}
1970
1971ecb_inline void
1657prepare_cede (pTHX_ struct transfer_args *ta) 1972prepare_cede (pTHX_ struct coro_transfer_args *ta)
1658{ 1973{
1659 api_ready (coro_current); 1974 api_ready (aTHX_ coro_current);
1660 prepare_schedule (aTHX_ ta); 1975 prepare_schedule (aTHX_ ta);
1661} 1976}
1662 1977
1663static void 1978ecb_inline void
1664prepare_cede_notself (pTHX_ struct transfer_args *ta) 1979prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1665{ 1980{
1666 SV *prev = SvRV (coro_current); 1981 SV *prev = SvRV (coro_current);
1667 1982
1668 if (coro_nready) 1983 if (coro_nready)
1669 { 1984 {
1670 prepare_schedule (aTHX_ ta); 1985 prepare_schedule (aTHX_ ta);
1671 api_ready (prev); 1986 api_ready (aTHX_ prev);
1672 } 1987 }
1673 else 1988 else
1674 ta->prev = ta->next = SvSTATE (prev); 1989 prepare_nop (aTHX_ ta);
1675} 1990}
1676 1991
1677static void 1992static void
1678api_schedule (void) 1993api_schedule (pTHX)
1679{ 1994{
1680 dTHX;
1681 struct transfer_args ta; 1995 struct coro_transfer_args ta;
1682 1996
1683 prepare_schedule (aTHX_ &ta); 1997 prepare_schedule (aTHX_ &ta);
1684 TRANSFER (ta, 1); 1998 TRANSFER (ta, 1);
1685} 1999}
1686 2000
2001static void
2002api_schedule_to (pTHX_ SV *coro_sv)
2003{
2004 struct coro_transfer_args ta;
2005 struct coro *next = SvSTATE (coro_sv);
2006
2007 SvREFCNT_inc_NN (coro_sv);
2008 prepare_schedule_to (aTHX_ &ta, next);
2009}
2010
1687static int 2011static int
1688api_cede (void) 2012api_cede (pTHX)
1689{ 2013{
1690 dTHX;
1691 struct transfer_args ta; 2014 struct coro_transfer_args ta;
1692 2015
1693 prepare_cede (aTHX_ &ta); 2016 prepare_cede (aTHX_ &ta);
1694 2017
1695 if (expect_true (ta.prev != ta.next)) 2018 if (ecb_expect_true (ta.prev != ta.next))
1696 { 2019 {
1697 TRANSFER (ta, 1); 2020 TRANSFER (ta, 1);
1698 return 1; 2021 return 1;
1699 } 2022 }
1700 else 2023 else
1701 return 0; 2024 return 0;
1702} 2025}
1703 2026
1704static int 2027static int
1705api_cede_notself (void) 2028api_cede_notself (pTHX)
1706{ 2029{
1707 if (coro_nready) 2030 if (coro_nready)
1708 { 2031 {
1709 dTHX;
1710 struct transfer_args ta; 2032 struct coro_transfer_args ta;
1711 2033
1712 prepare_cede_notself (aTHX_ &ta); 2034 prepare_cede_notself (aTHX_ &ta);
1713 TRANSFER (ta, 1); 2035 TRANSFER (ta, 1);
1714 return 1; 2036 return 1;
1715 } 2037 }
1716 else 2038 else
1717 return 0; 2039 return 0;
1718} 2040}
1719 2041
1720static void 2042static void
1721api_trace (SV *coro_sv, int flags) 2043api_trace (pTHX_ SV *coro_sv, int flags)
1722{ 2044{
1723 dTHX;
1724 struct coro *coro = SvSTATE (coro_sv); 2045 struct coro *coro = SvSTATE (coro_sv);
2046
2047 if (coro->flags & CF_RUNNING)
2048 croak ("cannot enable tracing on a running coroutine, caught");
1725 2049
1726 if (flags & CC_TRACE) 2050 if (flags & CC_TRACE)
1727 { 2051 {
1728 if (!coro->cctx) 2052 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 2053 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 2054 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack"); 2055 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 2056
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2057 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 2058 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2059 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 2060 {
… …
1741 else 2065 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 2066 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 2067 }
1744} 2068}
1745 2069
1746#if 0 2070static void
2071coro_push_av (pTHX_ AV *av, I32 gimme_v)
2072{
2073 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2074 {
2075 dSP;
2076
2077 if (gimme_v == G_SCALAR)
2078 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2079 else
2080 {
2081 int i;
2082 EXTEND (SP, AvFILLp (av) + 1);
2083
2084 for (i = 0; i <= AvFILLp (av); ++i)
2085 PUSHs (AvARRAY (av)[i]);
2086 }
2087
2088 PUTBACK;
2089 }
2090}
2091
2092static void
2093coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2094{
2095 if (!coro->on_destroy)
2096 coro->on_destroy = newAV ();
2097
2098 av_push (coro->on_destroy, cb);
2099}
2100
2101static void
2102slf_destroy_join (pTHX_ struct CoroSLF *frame)
2103{
2104 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2105}
2106
1747static int 2107static int
1748coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2108slf_check_join (pTHX_ struct CoroSLF *frame)
1749{ 2109{
1750 AV *padlist; 2110 struct coro *coro = (struct coro *)frame->data;
1751 AV *av = (AV *)mg->mg_obj;
1752 2111
1753 abort (); 2112 if (!coro->status)
2113 return 1;
2114
2115 frame->destroy = 0;
2116
2117 coro_push_av (aTHX_ coro->status, GIMME_V);
2118
2119 SvREFCNT_dec ((SV *)coro->hv);
1754 2120
1755 return 0; 2121 return 0;
1756} 2122}
1757 2123
1758static MGVTBL coro_gensub_vtbl = { 2124static void
1759 0, 0, 0, 0, 2125slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1760 coro_gensub_free 2126{
1761}; 2127 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1762#endif 2128
2129 if (items > 1)
2130 croak ("join called with too many arguments");
2131
2132 if (coro->status)
2133 frame->prepare = prepare_nop;
2134 else
2135 {
2136 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2137 frame->prepare = prepare_schedule;
2138 }
2139
2140 frame->check = slf_check_join;
2141 frame->destroy = slf_destroy_join;
2142 frame->data = (void *)coro;
2143 SvREFCNT_inc (coro->hv);
2144}
2145
2146static void
2147coro_call_on_destroy (pTHX_ struct coro *coro)
2148{
2149 AV *od = coro->on_destroy;
2150
2151 if (!od)
2152 return;
2153
2154 while (AvFILLp (od) >= 0)
2155 {
2156 SV *cb = sv_2mortal (av_pop (od));
2157
2158 /* coro hv's (and only hv's at the moment) are supported as well */
2159 if (SvSTATEhv_p (aTHX_ cb))
2160 api_ready (aTHX_ cb);
2161 else
2162 {
2163 dSP; /* don't disturb outer sp */
2164 PUSHMARK (SP);
2165
2166 if (coro->status)
2167 {
2168 PUTBACK;
2169 coro_push_av (aTHX_ coro->status, G_ARRAY);
2170 SPAGAIN;
2171 }
2172
2173 PUTBACK;
2174 call_sv (cb, G_VOID | G_DISCARD);
2175 }
2176 }
2177}
2178
2179static void
2180coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2181{
2182 AV *av;
2183
2184 if (coro->status)
2185 {
2186 av = coro->status;
2187 av_clear (av);
2188 }
2189 else
2190 av = coro->status = newAV ();
2191
2192 /* items are actually not so common, so optimise for this case */
2193 if (items)
2194 {
2195 int i;
2196
2197 av_extend (av, items - 1);
2198
2199 for (i = 0; i < items; ++i)
2200 av_push (av, SvREFCNT_inc_NN (arg [i]));
2201 }
2202}
2203
2204static void
2205slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2206{
2207 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2208 api_ready (aTHX_ sv_manager);
2209
2210 frame->prepare = prepare_schedule;
2211 frame->check = slf_check_repeat;
2212
2213 /* as a minor optimisation, we could unwind all stacks here */
2214 /* but that puts extra pressure on pp_slf, and is not worth much */
2215 /*coro_unwind_stacks (aTHX);*/
2216}
2217
2218static void
2219slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2220{
2221 HV *coro_hv = (HV *)SvRV (coro_current);
2222
2223 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2224 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2225}
2226
2227static void
2228slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2229{
2230 HV *coro_hv;
2231 struct coro *coro;
2232
2233 if (items <= 0)
2234 croak ("Coro::cancel called without coro object,");
2235
2236 coro = SvSTATE (arg [0]);
2237 coro_hv = coro->hv;
2238
2239 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2240
2241 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2242 {
2243 /* coro currently busy cancelling something, so just notify it */
2244 coro->slf_frame.data = (void *)coro;
2245
2246 frame->prepare = prepare_nop;
2247 frame->check = slf_check_nop;
2248 }
2249 else if (coro_hv == (HV *)SvRV (coro_current))
2250 {
2251 /* cancelling the current coro is allowed, and equals terminate */
2252 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2253 }
2254 else
2255 {
2256 struct coro *self = SvSTATE_current;
2257
2258 /* otherwise we cancel directly, purely for speed reasons
2259 * unfortunately, this requires some magic trickery, as
2260 * somebody else could cancel us, so we have to fight the cancellation.
2261 * this is ugly, and hopefully fully worth the extra speed.
2262 * besides, I can't get the slow-but-safe version working...
2263 */
2264 slf_frame.data = 0;
2265 self->flags |= CF_NOCANCEL;
2266 coro_state_destroy (aTHX_ coro);
2267 self->flags &= ~CF_NOCANCEL;
2268
2269 if (slf_frame.data)
2270 {
2271 /* while we were busy we have been cancelled, so terminate */
2272 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2273 }
2274 else
2275 {
2276 frame->prepare = prepare_nop;
2277 frame->check = slf_check_nop;
2278 }
2279 }
2280}
2281
2282static int
2283slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2284{
2285 frame->prepare = 0;
2286 coro_unwind_stacks (aTHX);
2287
2288 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2289
2290 return 1;
2291}
2292
2293static int
2294safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2295{
2296 if (coro->cctx)
2297 croak ("coro inside C callback, unable to cancel at this time, caught");
2298
2299 if (coro->flags & CF_NEW)
2300 {
2301 coro_set_status (aTHX_ coro, arg, items);
2302 coro_state_destroy (aTHX_ coro);
2303 }
2304 else
2305 {
2306 if (!coro->slf_frame.prepare)
2307 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2308
2309 slf_destroy (aTHX_ coro);
2310
2311 coro_set_status (aTHX_ coro, arg, items);
2312 coro->slf_frame.prepare = prepare_nop;
2313 coro->slf_frame.check = slf_check_safe_cancel;
2314
2315 api_ready (aTHX_ (SV *)coro->hv);
2316 }
2317
2318 return 1;
2319}
2320
2321/*****************************************************************************/
2322/* async pool handler */
2323
2324static int
2325slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2326{
2327 HV *hv = (HV *)SvRV (coro_current);
2328 struct coro *coro = (struct coro *)frame->data;
2329
2330 if (!coro->invoke_cb)
2331 return 1; /* loop till we have invoke */
2332 else
2333 {
2334 hv_store (hv, "desc", sizeof ("desc") - 1,
2335 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2336
2337 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2338
2339 {
2340 dSP;
2341 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2342 PUTBACK;
2343 }
2344
2345 SvREFCNT_dec (GvAV (PL_defgv));
2346 GvAV (PL_defgv) = coro->invoke_av;
2347 coro->invoke_av = 0;
2348
2349 return 0;
2350 }
2351}
2352
2353static void
2354slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2355{
2356 HV *hv = (HV *)SvRV (coro_current);
2357 struct coro *coro = SvSTATE_hv ((SV *)hv);
2358
2359 if (ecb_expect_true (coro->saved_deffh))
2360 {
2361 /* subsequent iteration */
2362 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2363 coro->saved_deffh = 0;
2364
2365 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2366 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2367 {
2368 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2369 return;
2370 }
2371 else
2372 {
2373 av_clear (GvAV (PL_defgv));
2374 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2375
2376 coro->prio = 0;
2377
2378 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2379 api_trace (aTHX_ coro_current, 0);
2380
2381 frame->prepare = prepare_schedule;
2382 av_push (av_async_pool, SvREFCNT_inc (hv));
2383 }
2384 }
2385 else
2386 {
2387 /* first iteration, simply fall through */
2388 frame->prepare = prepare_nop;
2389 }
2390
2391 frame->check = slf_check_pool_handler;
2392 frame->data = (void *)coro;
2393}
2394
2395/*****************************************************************************/
2396/* rouse callback */
2397
2398#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2399
2400static void
2401coro_rouse_callback (pTHX_ CV *cv)
2402{
2403 dXSARGS;
2404 SV *data = (SV *)S_GENSUB_ARG;
2405
2406 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2407 {
2408 /* first call, set args */
2409 SV *coro = SvRV (data);
2410 AV *av = newAV ();
2411
2412 SvRV_set (data, (SV *)av);
2413
2414 /* better take a full copy of the arguments */
2415 while (items--)
2416 av_store (av, items, newSVsv (ST (items)));
2417
2418 api_ready (aTHX_ coro);
2419 SvREFCNT_dec (coro);
2420 }
2421
2422 XSRETURN_EMPTY;
2423}
2424
2425static int
2426slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2427{
2428 SV *data = (SV *)frame->data;
2429
2430 if (CORO_THROW)
2431 return 0;
2432
2433 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2434 return 1;
2435
2436 /* now push all results on the stack */
2437 {
2438 dSP;
2439 AV *av = (AV *)SvRV (data);
2440 int i;
2441
2442 EXTEND (SP, AvFILLp (av) + 1);
2443 for (i = 0; i <= AvFILLp (av); ++i)
2444 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2445
2446 /* we have stolen the elements, so set length to zero and free */
2447 AvFILLp (av) = -1;
2448 av_undef (av);
2449
2450 PUTBACK;
2451 }
2452
2453 return 0;
2454}
2455
2456static void
2457slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2458{
2459 SV *cb;
2460
2461 if (items)
2462 cb = arg [0];
2463 else
2464 {
2465 struct coro *coro = SvSTATE_current;
2466
2467 if (!coro->rouse_cb)
2468 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2469
2470 cb = sv_2mortal (coro->rouse_cb);
2471 coro->rouse_cb = 0;
2472 }
2473
2474 if (!SvROK (cb)
2475 || SvTYPE (SvRV (cb)) != SVt_PVCV
2476 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2477 croak ("Coro::rouse_wait called with illegal callback argument,");
2478
2479 {
2480 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2481 SV *data = (SV *)S_GENSUB_ARG;
2482
2483 frame->data = (void *)data;
2484 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2485 frame->check = slf_check_rouse_wait;
2486 }
2487}
2488
2489static SV *
2490coro_new_rouse_cb (pTHX)
2491{
2492 HV *hv = (HV *)SvRV (coro_current);
2493 struct coro *coro = SvSTATE_hv (hv);
2494 SV *data = newRV_inc ((SV *)hv);
2495 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2496
2497 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2498 SvREFCNT_dec (data); /* magicext increases the refcount */
2499
2500 SvREFCNT_dec (coro->rouse_cb);
2501 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2502
2503 return cb;
2504}
2505
2506/*****************************************************************************/
2507/* schedule-like-function opcode (SLF) */
2508
2509static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2510static const CV *slf_cv;
2511static SV **slf_argv;
2512static int slf_argc, slf_arga; /* count, allocated */
2513static I32 slf_ax; /* top of stack, for restore */
2514
2515/* this restores the stack in the case we patched the entersub, to */
2516/* recreate the stack frame as perl will on following calls */
2517/* since entersub cleared the stack */
2518static OP *
2519pp_restore (pTHX)
2520{
2521 int i;
2522 SV **SP = PL_stack_base + slf_ax;
2523
2524 PUSHMARK (SP);
2525
2526 EXTEND (SP, slf_argc + 1);
2527
2528 for (i = 0; i < slf_argc; ++i)
2529 PUSHs (sv_2mortal (slf_argv [i]));
2530
2531 PUSHs ((SV *)CvGV (slf_cv));
2532
2533 RETURNOP (slf_restore.op_first);
2534}
2535
2536static void
2537slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2538{
2539 SV **arg = (SV **)slf_frame.data;
2540
2541 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2542}
2543
2544static void
2545slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2546{
2547 if (items != 2)
2548 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2549
2550 frame->prepare = slf_prepare_transfer;
2551 frame->check = slf_check_nop;
2552 frame->data = (void *)arg; /* let's hope it will stay valid */
2553}
2554
2555static void
2556slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 frame->prepare = prepare_schedule;
2559 frame->check = slf_check_nop;
2560}
2561
2562static void
2563slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2564{
2565 struct coro *next = (struct coro *)slf_frame.data;
2566
2567 SvREFCNT_inc_NN (next->hv);
2568 prepare_schedule_to (aTHX_ ta, next);
2569}
2570
2571static void
2572slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2573{
2574 if (!items)
2575 croak ("Coro::schedule_to expects a coroutine argument, caught");
2576
2577 frame->data = (void *)SvSTATE (arg [0]);
2578 frame->prepare = slf_prepare_schedule_to;
2579 frame->check = slf_check_nop;
2580}
2581
2582static void
2583slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2584{
2585 api_ready (aTHX_ SvRV (coro_current));
2586
2587 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2588}
2589
2590static void
2591slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2592{
2593 frame->prepare = prepare_cede;
2594 frame->check = slf_check_nop;
2595}
2596
2597static void
2598slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2599{
2600 frame->prepare = prepare_cede_notself;
2601 frame->check = slf_check_nop;
2602}
2603
2604/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2605static void
2606slf_destroy (pTHX_ struct coro *coro)
2607{
2608 /* this callback is reserved for slf functions needing to do cleanup */
2609 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2610 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2611
2612 /*
2613 * The on_destroy above most likely is from an SLF call.
2614 * Since by definition the SLF call will not finish when we destroy
2615 * the coro, we will have to force-finish it here, otherwise
2616 * cleanup functions cannot call SLF functions.
2617 */
2618 coro->slf_frame.prepare = 0;
2619}
2620
2621/*
2622 * these not obviously related functions are all rolled into one
2623 * function to increase chances that they all will call transfer with the same
2624 * stack offset
2625 * SLF stands for "schedule-like-function".
2626 */
2627static OP *
2628pp_slf (pTHX)
2629{
2630 I32 checkmark; /* mark SP to see how many elements check has pushed */
2631
2632 /* set up the slf frame, unless it has already been set-up */
2633 /* the latter happens when a new coro has been started */
2634 /* or when a new cctx was attached to an existing coroutine */
2635 if (ecb_expect_true (!slf_frame.prepare))
2636 {
2637 /* first iteration */
2638 dSP;
2639 SV **arg = PL_stack_base + TOPMARK + 1;
2640 int items = SP - arg; /* args without function object */
2641 SV *gv = *sp;
2642
2643 /* do a quick consistency check on the "function" object, and if it isn't */
2644 /* for us, divert to the real entersub */
2645 if (SvTYPE (gv) != SVt_PVGV
2646 || !GvCV (gv)
2647 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2648 return PL_ppaddr[OP_ENTERSUB](aTHX);
2649
2650 if (!(PL_op->op_flags & OPf_STACKED))
2651 {
2652 /* ampersand-form of call, use @_ instead of stack */
2653 AV *av = GvAV (PL_defgv);
2654 arg = AvARRAY (av);
2655 items = AvFILLp (av) + 1;
2656 }
2657
2658 /* now call the init function, which needs to set up slf_frame */
2659 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2660 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2661
2662 /* pop args */
2663 SP = PL_stack_base + POPMARK;
2664
2665 PUTBACK;
2666 }
2667
2668 /* now that we have a slf_frame, interpret it! */
2669 /* we use a callback system not to make the code needlessly */
2670 /* complicated, but so we can run multiple perl coros from one cctx */
2671
2672 do
2673 {
2674 struct coro_transfer_args ta;
2675
2676 slf_frame.prepare (aTHX_ &ta);
2677 TRANSFER (ta, 0);
2678
2679 checkmark = PL_stack_sp - PL_stack_base;
2680 }
2681 while (slf_frame.check (aTHX_ &slf_frame));
2682
2683 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2684
2685 /* exception handling */
2686 if (ecb_expect_false (CORO_THROW))
2687 {
2688 SV *exception = sv_2mortal (CORO_THROW);
2689
2690 CORO_THROW = 0;
2691 sv_setsv (ERRSV, exception);
2692 croak (0);
2693 }
2694
2695 /* return value handling - mostly like entersub */
2696 /* make sure we put something on the stack in scalar context */
2697 if (GIMME_V == G_SCALAR
2698 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2699 {
2700 dSP;
2701 SV **bot = PL_stack_base + checkmark;
2702
2703 if (sp == bot) /* too few, push undef */
2704 bot [1] = &PL_sv_undef;
2705 else /* too many, take last one */
2706 bot [1] = *sp;
2707
2708 SP = bot + 1;
2709
2710 PUTBACK;
2711 }
2712
2713 return NORMAL;
2714}
2715
2716static void
2717api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2718{
2719 int i;
2720 SV **arg = PL_stack_base + ax;
2721 int items = PL_stack_sp - arg + 1;
2722
2723 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2724
2725 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2726 && PL_op->op_ppaddr != pp_slf)
2727 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2728
2729 CvFLAGS (cv) |= CVf_SLF;
2730 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2731 slf_cv = cv;
2732
2733 /* we patch the op, and then re-run the whole call */
2734 /* we have to put the same argument on the stack for this to work */
2735 /* and this will be done by pp_restore */
2736 slf_restore.op_next = (OP *)&slf_restore;
2737 slf_restore.op_type = OP_CUSTOM;
2738 slf_restore.op_ppaddr = pp_restore;
2739 slf_restore.op_first = PL_op;
2740
2741 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2742
2743 if (PL_op->op_flags & OPf_STACKED)
2744 {
2745 if (items > slf_arga)
2746 {
2747 slf_arga = items;
2748 Safefree (slf_argv);
2749 New (0, slf_argv, slf_arga, SV *);
2750 }
2751
2752 slf_argc = items;
2753
2754 for (i = 0; i < items; ++i)
2755 slf_argv [i] = SvREFCNT_inc (arg [i]);
2756 }
2757 else
2758 slf_argc = 0;
2759
2760 PL_op->op_ppaddr = pp_slf;
2761 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2762
2763 PL_op = (OP *)&slf_restore;
2764}
2765
2766/*****************************************************************************/
2767/* dynamic wind */
2768
2769static void
2770on_enterleave_call (pTHX_ SV *cb)
2771{
2772 dSP;
2773
2774 PUSHSTACK;
2775
2776 PUSHMARK (SP);
2777 PUTBACK;
2778 call_sv (cb, G_VOID | G_DISCARD);
2779 SPAGAIN;
2780
2781 POPSTACK;
2782}
2783
2784static SV *
2785coro_avp_pop_and_free (pTHX_ AV **avp)
2786{
2787 AV *av = *avp;
2788 SV *res = av_pop (av);
2789
2790 if (AvFILLp (av) < 0)
2791 {
2792 *avp = 0;
2793 SvREFCNT_dec (av);
2794 }
2795
2796 return res;
2797}
2798
2799static void
2800coro_pop_on_enter (pTHX_ void *coro)
2801{
2802 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2803 SvREFCNT_dec (cb);
2804}
2805
2806static void
2807coro_pop_on_leave (pTHX_ void *coro)
2808{
2809 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2810 on_enterleave_call (aTHX_ sv_2mortal (cb));
2811}
1763 2812
1764/*****************************************************************************/ 2813/*****************************************************************************/
1765/* PerlIO::cede */ 2814/* PerlIO::cede */
1766 2815
1767typedef struct 2816typedef struct
1768{ 2817{
1769 PerlIOBuf base; 2818 PerlIOBuf base;
1770 NV next, every; 2819 NV next, every;
1771} PerlIOCede; 2820} PerlIOCede;
1772 2821
1773static IV 2822static IV ecb_cold
1774PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2823PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1775{ 2824{
1776 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2825 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1777 2826
1778 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2827 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1779 self->next = nvtime () + self->every; 2828 self->next = nvtime () + self->every;
1780 2829
1781 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2830 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1782} 2831}
1783 2832
1784static SV * 2833static SV * ecb_cold
1785PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2834PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1786{ 2835{
1787 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2836 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1788 2837
1789 return newSVnv (self->every); 2838 return newSVnv (self->every);
… …
1795 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2844 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1796 double now = nvtime (); 2845 double now = nvtime ();
1797 2846
1798 if (now >= self->next) 2847 if (now >= self->next)
1799 { 2848 {
1800 api_cede (); 2849 api_cede (aTHX);
1801 self->next = now + self->every; 2850 self->next = now + self->every;
1802 } 2851 }
1803 2852
1804 return PerlIOBuf_flush (aTHX_ f); 2853 return PerlIOBuf_flush (aTHX_ f);
1805} 2854}
… …
1835 PerlIOBuf_get_cnt, 2884 PerlIOBuf_get_cnt,
1836 PerlIOBuf_set_ptrcnt, 2885 PerlIOBuf_set_ptrcnt,
1837}; 2886};
1838 2887
1839/*****************************************************************************/ 2888/*****************************************************************************/
2889/* Coro::Semaphore & Coro::Signal */
1840 2890
1841static const CV *slf_cv; /* for quick consistency check */
1842
1843static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1844static SV *slf_arg0;
1845static SV *slf_arg1;
1846
1847/* this restores the stack in the case we patched the entersub, to */
1848/* recreate the stack frame as perl will on following calls */
1849/* since entersub cleared the stack */
1850static OP * 2891static SV *
1851pp_restore (pTHX) 2892coro_waitarray_new (pTHX_ int count)
2893{
2894 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2895 AV *av = newAV ();
2896 SV **ary;
2897
2898 /* unfortunately, building manually saves memory */
2899 Newx (ary, 2, SV *);
2900 AvALLOC (av) = ary;
2901#if PERL_VERSION_ATLEAST (5,10,0)
2902 AvARRAY (av) = ary;
2903#else
2904 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2905 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2906 SvPVX ((SV *)av) = (char *)ary;
2907#endif
2908 AvMAX (av) = 1;
2909 AvFILLp (av) = 0;
2910 ary [0] = newSViv (count);
2911
2912 return newRV_noinc ((SV *)av);
2913}
2914
2915/* semaphore */
2916
2917static void
2918coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2919{
2920 SV *count_sv = AvARRAY (av)[0];
2921 IV count = SvIVX (count_sv);
2922
2923 count += adjust;
2924 SvIVX (count_sv) = count;
2925
2926 /* now wake up as many waiters as are expected to lock */
2927 while (count > 0 && AvFILLp (av) > 0)
2928 {
2929 SV *cb;
2930
2931 /* swap first two elements so we can shift a waiter */
2932 AvARRAY (av)[0] = AvARRAY (av)[1];
2933 AvARRAY (av)[1] = count_sv;
2934 cb = av_shift (av);
2935
2936 if (SvOBJECT (cb))
2937 {
2938 api_ready (aTHX_ cb);
2939 --count;
2940 }
2941 else if (SvTYPE (cb) == SVt_PVCV)
2942 {
2943 dSP;
2944 PUSHMARK (SP);
2945 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2946 PUTBACK;
2947 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2948 }
2949
2950 SvREFCNT_dec (cb);
2951 }
2952}
2953
2954static void
2955coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2956{
2957 /* call $sem->adjust (0) to possibly wake up some other waiters */
2958 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2959}
2960
2961static int
2962slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2963{
2964 AV *av = (AV *)frame->data;
2965 SV *count_sv = AvARRAY (av)[0];
2966 SV *coro_hv = SvRV (coro_current);
2967
2968 /* if we are about to throw, don't actually acquire the lock, just throw */
2969 if (CORO_THROW)
2970 return 0;
2971 else if (SvIVX (count_sv) > 0)
2972 {
2973 frame->destroy = 0;
2974
2975 if (acquire)
2976 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2977 else
2978 coro_semaphore_adjust (aTHX_ av, 0);
2979
2980 return 0;
2981 }
2982 else
2983 {
2984 int i;
2985 /* if we were woken up but can't down, we look through the whole */
2986 /* waiters list and only add us if we aren't in there already */
2987 /* this avoids some degenerate memory usage cases */
2988 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2989 if (AvARRAY (av)[i] == coro_hv)
2990 return 1;
2991
2992 av_push (av, SvREFCNT_inc (coro_hv));
2993 return 1;
2994 }
2995}
2996
2997static int
2998slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2999{
3000 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3001}
3002
3003static int
3004slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3005{
3006 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3007}
3008
3009static void
3010slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3011{
3012 AV *av = (AV *)SvRV (arg [0]);
3013
3014 if (SvIVX (AvARRAY (av)[0]) > 0)
3015 {
3016 frame->data = (void *)av;
3017 frame->prepare = prepare_nop;
3018 }
3019 else
3020 {
3021 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
3022
3023 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
3024 frame->prepare = prepare_schedule;
3025 /* to avoid race conditions when a woken-up coro gets terminated */
3026 /* we arrange for a temporary on_destroy that calls adjust (0) */
3027 frame->destroy = coro_semaphore_destroy;
3028 }
3029}
3030
3031static void
3032slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3033{
3034 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3035 frame->check = slf_check_semaphore_down;
3036}
3037
3038static void
3039slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3040{
3041 if (items >= 2)
3042 {
3043 /* callback form */
3044 AV *av = (AV *)SvRV (arg [0]);
3045 SV *cb_cv = s_get_cv_croak (arg [1]);
3046
3047 av_push (av, SvREFCNT_inc_NN (cb_cv));
3048
3049 if (SvIVX (AvARRAY (av)[0]) > 0)
3050 coro_semaphore_adjust (aTHX_ av, 0);
3051
3052 frame->prepare = prepare_nop;
3053 frame->check = slf_check_nop;
3054 }
3055 else
3056 {
3057 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3058 frame->check = slf_check_semaphore_wait;
3059 }
3060}
3061
3062/* signal */
3063
3064static void
3065coro_signal_wake (pTHX_ AV *av, int count)
3066{
3067 SvIVX (AvARRAY (av)[0]) = 0;
3068
3069 /* now signal count waiters */
3070 while (count > 0 && AvFILLp (av) > 0)
3071 {
3072 SV *cb;
3073
3074 /* swap first two elements so we can shift a waiter */
3075 cb = AvARRAY (av)[0];
3076 AvARRAY (av)[0] = AvARRAY (av)[1];
3077 AvARRAY (av)[1] = cb;
3078
3079 cb = av_shift (av);
3080
3081 if (SvTYPE (cb) == SVt_PVCV)
3082 {
3083 dSP;
3084 PUSHMARK (SP);
3085 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3086 PUTBACK;
3087 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3088 }
3089 else
3090 {
3091 api_ready (aTHX_ cb);
3092 sv_setiv (cb, 0); /* signal waiter */
3093 }
3094
3095 SvREFCNT_dec (cb);
3096
3097 --count;
3098 }
3099}
3100
3101static int
3102slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3103{
3104 /* if we are about to throw, also stop waiting */
3105 return SvROK ((SV *)frame->data) && !CORO_THROW;
3106}
3107
3108static void
3109slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3110{
3111 AV *av = (AV *)SvRV (arg [0]);
3112
3113 if (items >= 2)
3114 {
3115 SV *cb_cv = s_get_cv_croak (arg [1]);
3116 av_push (av, SvREFCNT_inc_NN (cb_cv));
3117
3118 if (SvIVX (AvARRAY (av)[0]))
3119 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3120
3121 frame->prepare = prepare_nop;
3122 frame->check = slf_check_nop;
3123 }
3124 else if (SvIVX (AvARRAY (av)[0]))
3125 {
3126 SvIVX (AvARRAY (av)[0]) = 0;
3127 frame->prepare = prepare_nop;
3128 frame->check = slf_check_nop;
3129 }
3130 else
3131 {
3132 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3133
3134 av_push (av, waiter);
3135
3136 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3137 frame->prepare = prepare_schedule;
3138 frame->check = slf_check_signal_wait;
3139 }
3140}
3141
3142/*****************************************************************************/
3143/* Coro::AIO */
3144
3145#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3146
3147/* helper storage struct */
3148struct io_state
3149{
3150 int errorno;
3151 I32 laststype; /* U16 in 5.10.0 */
3152 int laststatval;
3153 Stat_t statcache;
3154};
3155
3156static void
3157coro_aio_callback (pTHX_ CV *cv)
3158{
3159 dXSARGS;
3160 AV *state = (AV *)S_GENSUB_ARG;
3161 SV *coro = av_pop (state);
3162 SV *data_sv = newSV (sizeof (struct io_state));
3163
3164 av_extend (state, items - 1);
3165
3166 sv_upgrade (data_sv, SVt_PV);
3167 SvCUR_set (data_sv, sizeof (struct io_state));
3168 SvPOK_only (data_sv);
3169
3170 {
3171 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3172
3173 data->errorno = errno;
3174 data->laststype = PL_laststype;
3175 data->laststatval = PL_laststatval;
3176 data->statcache = PL_statcache;
3177 }
3178
3179 /* now build the result vector out of all the parameters and the data_sv */
3180 {
3181 int i;
3182
3183 for (i = 0; i < items; ++i)
3184 av_push (state, SvREFCNT_inc_NN (ST (i)));
3185 }
3186
3187 av_push (state, data_sv);
3188
3189 api_ready (aTHX_ coro);
3190 SvREFCNT_dec (coro);
3191 SvREFCNT_dec ((AV *)state);
3192}
3193
3194static int
3195slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3196{
3197 AV *state = (AV *)frame->data;
3198
3199 /* if we are about to throw, return early */
3200 /* this does not cancel the aio request, but at least */
3201 /* it quickly returns */
3202 if (CORO_THROW)
3203 return 0;
3204
3205 /* one element that is an RV? repeat! */
3206 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
3207 return 1;
3208
3209 /* restore status */
3210 {
3211 SV *data_sv = av_pop (state);
3212 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3213
3214 errno = data->errorno;
3215 PL_laststype = data->laststype;
3216 PL_laststatval = data->laststatval;
3217 PL_statcache = data->statcache;
3218
3219 SvREFCNT_dec (data_sv);
3220 }
3221
3222 /* push result values */
3223 {
3224 dSP;
3225 int i;
3226
3227 EXTEND (SP, AvFILLp (state) + 1);
3228 for (i = 0; i <= AvFILLp (state); ++i)
3229 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3230
3231 PUTBACK;
3232 }
3233
3234 return 0;
3235}
3236
3237static void
3238slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3239{
3240 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3241 SV *coro_hv = SvRV (coro_current);
3242 struct coro *coro = SvSTATE_hv (coro_hv);
3243
3244 /* put our coroutine id on the state arg */
3245 av_push (state, SvREFCNT_inc_NN (coro_hv));
3246
3247 /* first see whether we have a non-zero priority and set it as AIO prio */
3248 if (coro->prio)
3249 {
3250 dSP;
3251
3252 static SV *prio_cv;
3253 static SV *prio_sv;
3254
3255 if (ecb_expect_false (!prio_cv))
3256 {
3257 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3258 prio_sv = newSViv (0);
3259 }
3260
3261 PUSHMARK (SP);
3262 sv_setiv (prio_sv, coro->prio);
3263 XPUSHs (prio_sv);
3264
3265 PUTBACK;
3266 call_sv (prio_cv, G_VOID | G_DISCARD);
3267 }
3268
3269 /* now call the original request */
3270 {
3271 dSP;
3272 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3273 int i;
3274
3275 PUSHMARK (SP);
3276
3277 /* first push all args to the stack */
3278 EXTEND (SP, items + 1);
3279
3280 for (i = 0; i < items; ++i)
3281 PUSHs (arg [i]);
3282
3283 /* now push the callback closure */
3284 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3285
3286 /* now call the AIO function - we assume our request is uncancelable */
3287 PUTBACK;
3288 call_sv ((SV *)req, G_VOID | G_DISCARD);
3289 }
3290
3291 /* now that the request is going, we loop till we have a result */
3292 frame->data = (void *)state;
3293 frame->prepare = prepare_schedule;
3294 frame->check = slf_check_aio_req;
3295}
3296
3297static void
3298coro_aio_req_xs (pTHX_ CV *cv)
3299{
3300 dXSARGS;
3301
3302 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3303
3304 XSRETURN_EMPTY;
3305}
3306
3307/*****************************************************************************/
3308
3309#if CORO_CLONE
3310# include "clone.c"
3311#endif
3312
3313/*****************************************************************************/
3314
3315static SV *
3316coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3317{
3318 SV *coro_sv;
3319 struct coro *coro;
3320 MAGIC *mg;
3321 HV *hv;
3322 SV *cb;
3323 int i;
3324
3325 if (argc > 0)
3326 {
3327 cb = s_get_cv_croak (argv [0]);
3328
3329 if (!is_coro)
3330 {
3331 if (CvISXSUB (cb))
3332 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3333
3334 if (!CvROOT (cb))
3335 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3336 }
3337 }
3338
3339 Newz (0, coro, 1, struct coro);
3340 coro->args = newAV ();
3341 coro->flags = CF_NEW;
3342
3343 if (coro_first) coro_first->prev = coro;
3344 coro->next = coro_first;
3345 coro_first = coro;
3346
3347 coro->hv = hv = newHV ();
3348 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3349 mg->mg_flags |= MGf_DUP;
3350 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3351
3352 if (argc > 0)
3353 {
3354 av_extend (coro->args, argc + is_coro - 1);
3355
3356 if (is_coro)
3357 {
3358 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3359 cb = (SV *)cv_coro_run;
3360 }
3361
3362 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3363
3364 for (i = 1; i < argc; i++)
3365 av_push (coro->args, newSVsv (argv [i]));
3366 }
3367
3368 return coro_sv;
3369}
3370
3371#ifndef __cplusplus
3372ecb_cold XS(boot_Coro__State);
3373#endif
3374
3375#if CORO_JIT
3376
3377static void ecb_noinline ecb_cold
3378pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
1852{ 3379{
1853 dSP; 3380 dSP;
3381 AV *av = newAV ();
3382
3383 av_store (av, 3, newSVuv (d));
3384 av_store (av, 2, newSVuv (c));
3385 av_store (av, 1, newSVuv (b));
3386 av_store (av, 0, newSVuv (a));
3387
3388 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3389
3390 PUTBACK;
3391}
3392
3393static void ecb_noinline ecb_cold
3394jit_init (pTHX)
3395{
3396 dSP;
3397 SV *load, *save;
3398 char *map_base;
3399 char *load_ptr, *save_ptr;
3400 STRLEN load_len, save_len, map_len;
3401 int count;
3402
3403 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
1854 3404
1855 PUSHMARK (SP); 3405 PUSHMARK (SP);
3406#define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3407# include "state.h"
3408#undef VARx
3409 count = call_pv ("Coro::State::_jit", G_ARRAY);
3410 SPAGAIN;
1856 3411
1857 EXTEND (SP, 3); 3412 save = POPs; save_ptr = SvPVbyte (save, save_len);
1858 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); 3413 load = POPs; load_ptr = SvPVbyte (load, load_len);
1859 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1860 PUSHs ((SV *)CvGV (slf_cv));
1861 3414
1862 RETURNOP (slf_restore.op_first); 3415 map_len = load_len + save_len + 16;
1863}
1864 3416
1865#define OPpENTERSUB_SLF 15 /* the part of op_private entersub hopefully doesn't use */ 3417 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1866 3418
1867/* declare prototype */ 3419 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
1868XS(XS_Coro__State__set_stacklevel);
1869 3420
1870/* 3421 load_perl_slots = (load_save_perl_slots_type)map_base;
1871 * these not obviously related functions are all rolled into one 3422 memcpy (map_base, load_ptr, load_len);
1872 * function to increase chances that they all will call transfer with the same
1873 * stack offset
1874 * SLF stands for "schedule-like-function".
1875 */
1876static OP *
1877pp_slf (pTHX)
1878{
1879 dSP;
1880 struct transfer_args ta;
1881 SV **arg = PL_stack_base + TOPMARK + 1;
1882 int items = SP - arg; /* args without function object */
1883 3423
1884 /* do a quick consistency check on the "function" object, and if it isn't */ 3424 map_base += (load_len + 15) & ~15;
1885 /* for us, divert to the real entersub */
1886 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1887 return PL_ppaddr[OP_ENTERSUB](aTHX);
1888 3425
1889 /* pop args */ 3426 save_perl_slots = (load_save_perl_slots_type)map_base;
1890 SP = PL_stack_base + POPMARK; 3427 memcpy (map_base, save_ptr, save_len);
1891 3428
1892 if (!(PL_op->op_flags & OPf_STACKED)) 3429 /* we are good citizens and try to make the page read-only, so the evil evil */
1893 { 3430 /* hackers might have it a bit more difficult */
1894 /* ampersand-form of call, use @_ instead of stack */ 3431 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
1895 AV *av = GvAV (PL_defgv);
1896 arg = AvARRAY (av);
1897 items = AvFILLp (av) + 1;
1898 }
1899 3432
1900 PUTBACK; 3433 PUTBACK;
1901 switch (PL_op->op_private & OPpENTERSUB_SLF) 3434 eval_pv ("undef &Coro::State::_jit", 1);
1902 {
1903 case 0:
1904 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1905 break;
1906
1907 case 1:
1908 if (items != 2)
1909 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1910
1911 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1912 break;
1913
1914 case 2:
1915 prepare_schedule (aTHX_ &ta);
1916 break;
1917
1918 case 3:
1919 prepare_cede (aTHX_ &ta);
1920 break;
1921
1922 case 4:
1923 prepare_cede_notself (aTHX_ &ta);
1924 break;
1925
1926 case 5:
1927 abort ();
1928
1929 default:
1930 abort ();
1931 }
1932
1933 TRANSFER (ta, 0);
1934 SPAGAIN;
1935
1936 PUTBACK;
1937 SLF_TAIL;
1938 SPAGAIN;
1939 RETURN;
1940} 3435}
1941 3436
1942static void 3437#endif
1943coro_slf_patch (pTHX_ CV *cv, int ix, SV **args, int items)
1944{
1945 assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf));
1946
1947 assert (("FATAL: SLF call with illegal CV value", CvGV (cv)));
1948 slf_cv = cv;
1949
1950 /* we patch the op, and then re-run the whole call */
1951 /* we have to put the same argument on the stack for this to work */
1952 /* and this will be done by pp_restore */
1953 slf_restore.op_next = (OP *)&slf_restore;
1954 slf_restore.op_type = OP_NULL;
1955 slf_restore.op_ppaddr = pp_restore;
1956 slf_restore.op_first = PL_op;
1957
1958 slf_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
1959 slf_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
1960
1961 PL_op->op_ppaddr = pp_slf;
1962 PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SLF | ix; /* we potentially share our private flags with entersub */
1963
1964 PL_op = (OP *)&slf_restore;
1965}
1966 3438
1967MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3439MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1968 3440
1969PROTOTYPES: DISABLE 3441PROTOTYPES: DISABLE
1970 3442
1971BOOT: 3443BOOT:
1972{ 3444{
1973#ifdef USE_ITHREADS 3445#ifdef USE_ITHREADS
1974 MUTEX_INIT (&coro_lock);
1975# if CORO_PTHREAD 3446# if CORO_PTHREAD
1976 coro_thx = PERL_GET_CONTEXT; 3447 coro_thx = PERL_GET_CONTEXT;
1977# endif 3448# endif
1978#endif 3449#endif
1979 BOOT_PAGESIZE; 3450 BOOT_PAGESIZE;
3451
3452 /* perl defines these to check for existance first, but why it doesn't */
3453 /* just create them one at init time is not clear to me, except for */
3454 /* programs trying to delete them, but... */
3455 /* anyway, we declare this as invalid and make sure they are initialised here */
3456 DEFSV;
3457 ERRSV;
3458
3459 cctx_current = cctx_new_empty ();
1980 3460
1981 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3461 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1982 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3462 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1983 3463
1984 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3464 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2000 main_top_env = PL_top_env; 3480 main_top_env = PL_top_env;
2001 3481
2002 while (main_top_env->je_prev) 3482 while (main_top_env->je_prev)
2003 main_top_env = main_top_env->je_prev; 3483 main_top_env = main_top_env->je_prev;
2004 3484
2005 coroapi.ver = CORO_API_VERSION;
2006 coroapi.rev = CORO_API_REVISION;
2007 coroapi.transfer = api_transfer;
2008
2009 { 3485 {
2010 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3486 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2011 3487
2012 if (!svp) croak ("Time::HiRes is required"); 3488 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2013 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3489 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2014 3490
2015 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3491 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3492 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2016 } 3493 }
2017 3494
3495 coroapi.ver = CORO_API_VERSION;
3496 coroapi.rev = CORO_API_REVISION;
3497
3498 coroapi.transfer = api_transfer;
3499
3500 coroapi.sv_state = SvSTATE_;
3501 coroapi.execute_slf = api_execute_slf;
3502 coroapi.prepare_nop = prepare_nop;
3503 coroapi.prepare_schedule = prepare_schedule;
3504 coroapi.prepare_cede = prepare_cede;
3505 coroapi.prepare_cede_notself = prepare_cede_notself;
3506
3507 time_init (aTHX);
3508
2018 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3509 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3510#if CORO_JIT
3511 PUTBACK;
3512 jit_init (aTHX);
3513 SPAGAIN;
3514#endif
2019} 3515}
2020 3516
2021SV * 3517SV *
2022new (char *klass, ...) 3518new (SV *klass, ...)
3519 ALIAS:
3520 Coro::new = 1
2023 CODE: 3521 CODE:
2024{ 3522 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2025 struct coro *coro;
2026 MAGIC *mg;
2027 HV *hv;
2028 int i;
2029
2030 Newz (0, coro, 1, struct coro);
2031 coro->args = newAV ();
2032 coro->flags = CF_NEW;
2033
2034 if (coro_first) coro_first->prev = coro;
2035 coro->next = coro_first;
2036 coro_first = coro;
2037
2038 coro->hv = hv = newHV ();
2039 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2040 mg->mg_flags |= MGf_DUP;
2041 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2042
2043 av_extend (coro->args, items - 1);
2044 for (i = 1; i < items; i++)
2045 av_push (coro->args, newSVsv (ST (i)));
2046}
2047 OUTPUT:
2048 RETVAL
2049
2050void
2051_set_stacklevel (...)
2052 ALIAS:
2053 Coro::State::transfer = 1
2054 Coro::schedule = 2
2055 Coro::cede = 3
2056 Coro::cede_notself = 4
2057 CODE:
2058 coro_slf_patch (aTHX_ cv, ix, &ST (0), items);
2059
2060bool
2061_destroy (SV *coro_sv)
2062 CODE:
2063 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2064 OUTPUT: 3523 OUTPUT:
2065 RETVAL 3524 RETVAL
3525
3526void
3527transfer (...)
3528 PROTOTYPE: $$
3529 CODE:
3530 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2066 3531
2067void 3532void
2068_exit (int code) 3533_exit (int code)
2069 PROTOTYPE: $ 3534 PROTOTYPE: $
2070 CODE: 3535 CODE:
2071 _exit (code); 3536 _exit (code);
2072 3537
3538SV *
3539clone (Coro::State coro)
3540 CODE:
3541{
3542#if CORO_CLONE
3543 struct coro *ncoro = coro_clone (aTHX_ coro);
3544 MAGIC *mg;
3545 /* TODO: too much duplication */
3546 ncoro->hv = newHV ();
3547 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3548 mg->mg_flags |= MGf_DUP;
3549 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3550#else
3551 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3552#endif
3553}
3554 OUTPUT:
3555 RETVAL
3556
2073int 3557int
2074cctx_stacksize (int new_stacksize = 0) 3558cctx_stacksize (int new_stacksize = 0)
3559 PROTOTYPE: ;$
2075 CODE: 3560 CODE:
2076 RETVAL = cctx_stacksize; 3561 RETVAL = cctx_stacksize;
2077 if (new_stacksize) 3562 if (new_stacksize)
2078 { 3563 {
2079 cctx_stacksize = new_stacksize; 3564 cctx_stacksize = new_stacksize;
… …
2082 OUTPUT: 3567 OUTPUT:
2083 RETVAL 3568 RETVAL
2084 3569
2085int 3570int
2086cctx_max_idle (int max_idle = 0) 3571cctx_max_idle (int max_idle = 0)
3572 PROTOTYPE: ;$
2087 CODE: 3573 CODE:
2088 RETVAL = cctx_max_idle; 3574 RETVAL = cctx_max_idle;
2089 if (max_idle > 1) 3575 if (max_idle > 1)
2090 cctx_max_idle = max_idle; 3576 cctx_max_idle = max_idle;
2091 OUTPUT: 3577 OUTPUT:
2092 RETVAL 3578 RETVAL
2093 3579
2094int 3580int
2095cctx_count () 3581cctx_count ()
3582 PROTOTYPE:
2096 CODE: 3583 CODE:
2097 RETVAL = cctx_count; 3584 RETVAL = cctx_count;
2098 OUTPUT: 3585 OUTPUT:
2099 RETVAL 3586 RETVAL
2100 3587
2101int 3588int
2102cctx_idle () 3589cctx_idle ()
3590 PROTOTYPE:
2103 CODE: 3591 CODE:
2104 RETVAL = cctx_idle; 3592 RETVAL = cctx_idle;
2105 OUTPUT: 3593 OUTPUT:
2106 RETVAL 3594 RETVAL
2107 3595
2108void 3596void
2109list () 3597list ()
3598 PROTOTYPE:
2110 PPCODE: 3599 PPCODE:
2111{ 3600{
2112 struct coro *coro; 3601 struct coro *coro;
2113 for (coro = coro_first; coro; coro = coro->next) 3602 for (coro = coro_first; coro; coro = coro->next)
2114 if (coro->hv) 3603 if (coro->hv)
… …
2121 eval = 1 3610 eval = 1
2122 CODE: 3611 CODE:
2123{ 3612{
2124 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3613 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2125 { 3614 {
2126 struct coro temp; 3615 struct coro *current = SvSTATE_current;
3616 struct CoroSLF slf_save;
2127 3617
2128 if (!(coro->flags & CF_RUNNING)) 3618 if (current != coro)
2129 { 3619 {
2130 PUTBACK; 3620 PUTBACK;
2131 save_perl (aTHX_ &temp); 3621 save_perl (aTHX_ current);
2132 load_perl (aTHX_ coro); 3622 load_perl (aTHX_ coro);
3623 /* the coro is most likely in an active SLF call.
3624 * while not strictly required (the code we execute is
3625 * not allowed to call any SLF functions), it's cleaner
3626 * to reinitialise the slf_frame and restore it later.
3627 * This might one day allow us to actually do SLF calls
3628 * from code executed here.
3629 */
3630 slf_save = slf_frame;
3631 slf_frame.prepare = 0;
3632 SPAGAIN;
2133 } 3633 }
2134 3634
2135 {
2136 dSP;
2137 ENTER;
2138 SAVETMPS;
2139 PUTBACK;
2140 PUSHSTACK; 3635 PUSHSTACK;
3636
2141 PUSHMARK (SP); 3637 PUSHMARK (SP);
3638 PUTBACK;
2142 3639
2143 if (ix) 3640 if (ix)
2144 eval_sv (coderef, 0); 3641 eval_sv (coderef, 0);
2145 else 3642 else
2146 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3643 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2147 3644
2148 POPSTACK; 3645 POPSTACK;
2149 SPAGAIN; 3646 SPAGAIN;
2150 FREETMPS;
2151 LEAVE;
2152 PUTBACK;
2153 }
2154 3647
2155 if (!(coro->flags & CF_RUNNING)) 3648 if (current != coro)
2156 { 3649 {
3650 PUTBACK;
3651 slf_frame = slf_save;
2157 save_perl (aTHX_ coro); 3652 save_perl (aTHX_ coro);
2158 load_perl (aTHX_ &temp); 3653 load_perl (aTHX_ current);
2159 SPAGAIN; 3654 SPAGAIN;
2160 } 3655 }
2161 } 3656 }
2162} 3657}
2163 3658
… …
2166 PROTOTYPE: $ 3661 PROTOTYPE: $
2167 ALIAS: 3662 ALIAS:
2168 is_ready = CF_READY 3663 is_ready = CF_READY
2169 is_running = CF_RUNNING 3664 is_running = CF_RUNNING
2170 is_new = CF_NEW 3665 is_new = CF_NEW
2171 is_destroyed = CF_DESTROYED 3666 is_destroyed = CF_ZOMBIE
3667 is_zombie = CF_ZOMBIE
3668 is_suspended = CF_SUSPENDED
2172 CODE: 3669 CODE:
2173 RETVAL = boolSV (coro->flags & ix); 3670 RETVAL = boolSV (coro->flags & ix);
2174 OUTPUT: 3671 OUTPUT:
2175 RETVAL 3672 RETVAL
2176 3673
2177void 3674void
2178throw (Coro::State self, SV *throw = &PL_sv_undef) 3675throw (Coro::State self, SV *exception = &PL_sv_undef)
2179 PROTOTYPE: $;$ 3676 PROTOTYPE: $;$
2180 CODE: 3677 CODE:
3678{
3679 struct coro *current = SvSTATE_current;
3680 SV **exceptionp = self == current ? &CORO_THROW : &self->except;
2181 SvREFCNT_dec (self->throw); 3681 SvREFCNT_dec (*exceptionp);
2182 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3682 SvGETMAGIC (exception);
3683 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3684}
2183 3685
2184void 3686void
2185api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3687api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3688 PROTOTYPE: $;$
3689 C_ARGS: aTHX_ coro, flags
2186 3690
2187SV * 3691SV *
2188has_cctx (Coro::State coro) 3692has_cctx (Coro::State coro)
2189 PROTOTYPE: $ 3693 PROTOTYPE: $
2190 CODE: 3694 CODE:
2191 RETVAL = boolSV (!!coro->cctx); 3695 /* maybe manage the running flag differently */
3696 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2192 OUTPUT: 3697 OUTPUT:
2193 RETVAL 3698 RETVAL
2194 3699
2195int 3700int
2196is_traced (Coro::State coro) 3701is_traced (Coro::State coro)
… …
2214 OUTPUT: 3719 OUTPUT:
2215 RETVAL 3720 RETVAL
2216 3721
2217void 3722void
2218force_cctx () 3723force_cctx ()
3724 PROTOTYPE:
2219 CODE: 3725 CODE:
2220 struct coro *coro = SvSTATE (coro_current);
2221 coro->cctx->idle_sp = 0; 3726 cctx_current->idle_sp = 0;
2222 3727
2223void 3728void
2224swap_defsv (Coro::State self) 3729swap_defsv (Coro::State self)
2225 PROTOTYPE: $ 3730 PROTOTYPE: $
2226 ALIAS: 3731 ALIAS:
2227 swap_defav = 1 3732 swap_defav = 1
2228 CODE: 3733 CODE:
2229 if (!self->slot) 3734 if (!self->slot)
2230 croak ("cannot swap state with coroutine that has no saved state"); 3735 croak ("cannot swap state with coroutine that has no saved state,");
2231 else 3736 else
2232 { 3737 {
2233 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3738 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2234 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3739 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2235 3740
2236 SV *tmp = *src; *src = *dst; *dst = tmp; 3741 SV *tmp = *src; *src = *dst; *dst = tmp;
2237 } 3742 }
2238 3743
3744void
3745cancel (Coro::State self)
3746 CODE:
3747 coro_state_destroy (aTHX_ self);
3748
3749SV *
3750enable_times (int enabled = enable_times)
3751 CODE:
3752{
3753 RETVAL = boolSV (enable_times);
3754
3755 if (enabled != enable_times)
3756 {
3757 enable_times = enabled;
3758
3759 coro_times_update ();
3760 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3761 }
3762}
3763 OUTPUT:
3764 RETVAL
3765
3766void
3767times (Coro::State self)
3768 PPCODE:
3769{
3770 struct coro *current = SvSTATE (coro_current);
3771
3772 if (ecb_expect_false (current == self))
3773 {
3774 coro_times_update ();
3775 coro_times_add (SvSTATE (coro_current));
3776 }
3777
3778 EXTEND (SP, 2);
3779 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3780 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3781
3782 if (ecb_expect_false (current == self))
3783 coro_times_sub (SvSTATE (coro_current));
3784}
3785
3786void
3787swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3788 CODE:
3789{
3790 struct coro *current = SvSTATE_current;
3791
3792 if (current == coro)
3793 SWAP_SVS (current);
3794
3795 if (!coro->swap_sv)
3796 coro->swap_sv = newAV ();
3797
3798 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3799 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3800
3801 if (current == coro)
3802 SWAP_SVS (current);
3803}
3804
3805
2239MODULE = Coro::State PACKAGE = Coro 3806MODULE = Coro::State PACKAGE = Coro
2240 3807
2241BOOT: 3808BOOT:
2242{ 3809{
2243 int i;
2244
2245 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2246 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2247 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2248 3812 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2249 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3813 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2250 SvREADONLY_on (coro_current); 3814 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3815 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3816 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3817 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2251 3818
3819 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3820 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3821 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3822 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3823
2252 coro_stash = gv_stashpv ("Coro", TRUE); 3824 coro_stash = gv_stashpv ("Coro", TRUE);
2253 3825
2254 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3826 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2255 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3827 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2256 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3828 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2257 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3829 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2258 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3830 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2259 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3831 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2260
2261 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2262 coro_ready[i] = newAV ();
2263 3832
2264 { 3833 {
2265 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3834 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2266 3835
2267 coroapi.schedule = api_schedule; 3836 coroapi.schedule = api_schedule;
3837 coroapi.schedule_to = api_schedule_to;
2268 coroapi.cede = api_cede; 3838 coroapi.cede = api_cede;
2269 coroapi.cede_notself = api_cede_notself; 3839 coroapi.cede_notself = api_cede_notself;
2270 coroapi.ready = api_ready; 3840 coroapi.ready = api_ready;
2271 coroapi.is_ready = api_is_ready; 3841 coroapi.is_ready = api_is_ready;
2272 coroapi.nready = &coro_nready; 3842 coroapi.nready = coro_nready;
2273 coroapi.current = coro_current; 3843 coroapi.current = coro_current;
2274 3844
2275 GCoroAPI = &coroapi; 3845 /*GCoroAPI = &coroapi;*/
2276 sv_setiv (sv, (IV)&coroapi); 3846 sv_setiv (sv, (IV)&coroapi);
2277 SvREADONLY_on (sv); 3847 SvREADONLY_on (sv);
2278 } 3848 }
2279} 3849}
3850
3851SV *
3852async (...)
3853 PROTOTYPE: &@
3854 CODE:
3855 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3856 api_ready (aTHX_ RETVAL);
3857 OUTPUT:
3858 RETVAL
3859
3860void
3861_destroy (Coro::State coro)
3862 CODE:
3863 /* used by the manager thread */
3864 coro_state_destroy (aTHX_ coro);
3865
3866void
3867on_destroy (Coro::State coro, SV *cb)
3868 CODE:
3869 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3870
3871void
3872join (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_join);
3875
3876void
3877terminate (...)
3878 CODE:
3879 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3880
3881void
3882cancel (...)
3883 CODE:
3884 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3885
3886int
3887safe_cancel (Coro::State self, ...)
3888 C_ARGS: aTHX_ self, &ST (1), items - 1
3889
3890void
3891schedule (...)
3892 CODE:
3893 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3894
3895void
3896schedule_to (...)
3897 CODE:
3898 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3899
3900void
3901cede_to (...)
3902 CODE:
3903 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3904
3905void
3906cede (...)
3907 CODE:
3908 CORO_EXECUTE_SLF_XS (slf_init_cede);
3909
3910void
3911cede_notself (...)
3912 CODE:
3913 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2280 3914
2281void 3915void
2282_set_current (SV *current) 3916_set_current (SV *current)
2283 PROTOTYPE: $ 3917 PROTOTYPE: $
2284 CODE: 3918 CODE:
… …
2287 3921
2288void 3922void
2289_set_readyhook (SV *hook) 3923_set_readyhook (SV *hook)
2290 PROTOTYPE: $ 3924 PROTOTYPE: $
2291 CODE: 3925 CODE:
2292 LOCK;
2293 SvREFCNT_dec (coro_readyhook); 3926 SvREFCNT_dec (coro_readyhook);
3927 SvGETMAGIC (hook);
3928 if (SvOK (hook))
3929 {
2294 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3930 coro_readyhook = newSVsv (hook);
2295 UNLOCK; 3931 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3932 }
3933 else
3934 {
3935 coro_readyhook = 0;
3936 CORO_READYHOOK = 0;
3937 }
2296 3938
2297int 3939int
2298prio (Coro::State coro, int newprio = 0) 3940prio (Coro::State coro, int newprio = 0)
3941 PROTOTYPE: $;$
2299 ALIAS: 3942 ALIAS:
2300 nice = 1 3943 nice = 1
2301 CODE: 3944 CODE:
2302{ 3945{
2303 RETVAL = coro->prio; 3946 RETVAL = coro->prio;
… …
2305 if (items > 1) 3948 if (items > 1)
2306 { 3949 {
2307 if (ix) 3950 if (ix)
2308 newprio = coro->prio - newprio; 3951 newprio = coro->prio - newprio;
2309 3952
2310 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3953 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2311 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3954 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2312 3955
2313 coro->prio = newprio; 3956 coro->prio = newprio;
2314 } 3957 }
2315} 3958}
2316 OUTPUT: 3959 OUTPUT:
… …
2318 3961
2319SV * 3962SV *
2320ready (SV *self) 3963ready (SV *self)
2321 PROTOTYPE: $ 3964 PROTOTYPE: $
2322 CODE: 3965 CODE:
2323 RETVAL = boolSV (api_ready (self)); 3966 RETVAL = boolSV (api_ready (aTHX_ self));
2324 OUTPUT: 3967 OUTPUT:
2325 RETVAL 3968 RETVAL
2326 3969
2327int 3970int
2328nready (...) 3971nready (...)
… …
2330 CODE: 3973 CODE:
2331 RETVAL = coro_nready; 3974 RETVAL = coro_nready;
2332 OUTPUT: 3975 OUTPUT:
2333 RETVAL 3976 RETVAL
2334 3977
2335# for async_pool speedup
2336void 3978void
2337_pool_1 (SV *cb) 3979suspend (Coro::State self)
3980 PROTOTYPE: $
2338 CODE: 3981 CODE:
2339{ 3982 self->flags |= CF_SUSPENDED;
2340 struct coro *coro = SvSTATE (coro_current);
2341 HV *hv = (HV *)SvRV (coro_current);
2342 AV *defav = GvAV (PL_defgv);
2343 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2344 AV *invoke_av;
2345 int i, len;
2346 3983
2347 if (!invoke) 3984void
3985resume (Coro::State self)
3986 PROTOTYPE: $
3987 CODE:
3988 self->flags &= ~CF_SUSPENDED;
3989
3990void
3991_pool_handler (...)
3992 CODE:
3993 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3994
3995void
3996async_pool (SV *cv, ...)
3997 PROTOTYPE: &@
3998 PPCODE:
3999{
4000 HV *hv = (HV *)av_pop (av_async_pool);
4001 AV *av = newAV ();
4002 SV *cb = ST (0);
4003 int i;
4004
4005 av_extend (av, items - 2);
4006 for (i = 1; i < items; ++i)
4007 av_push (av, SvREFCNT_inc_NN (ST (i)));
4008
4009 if ((SV *)hv == &PL_sv_undef)
2348 { 4010 {
2349 SV *old = PL_diehook; 4011 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2350 PL_diehook = 0; 4012 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2351 SvREFCNT_dec (old); 4013 SvREFCNT_dec (sv);
2352 croak ("\3async_pool terminate\2\n");
2353 } 4014 }
2354 4015
2355 SvREFCNT_dec (coro->saved_deffh);
2356 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2357
2358 hv_store (hv, "desc", sizeof ("desc") - 1,
2359 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2360
2361 invoke_av = (AV *)SvRV (invoke);
2362 len = av_len (invoke_av);
2363
2364 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2365
2366 if (len > 0)
2367 { 4016 {
2368 av_fill (defav, len - 1); 4017 struct coro *coro = SvSTATE_hv (hv);
2369 for (i = 0; i < len; ++i) 4018
2370 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4019 assert (!coro->invoke_cb);
4020 assert (!coro->invoke_av);
4021 coro->invoke_cb = SvREFCNT_inc (cb);
4022 coro->invoke_av = av;
2371 } 4023 }
2372 4024
4025 api_ready (aTHX_ (SV *)hv);
4026
4027 if (GIMME_V != G_VOID)
4028 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4029 else
2373 SvREFCNT_dec (invoke); 4030 SvREFCNT_dec (hv);
2374} 4031}
2375 4032
2376void 4033SV *
2377_pool_2 (SV *cb) 4034rouse_cb ()
4035 PROTOTYPE:
2378 CODE: 4036 CODE:
2379{ 4037 RETVAL = coro_new_rouse_cb (aTHX);
2380 struct coro *coro = SvSTATE (coro_current);
2381
2382 sv_setsv (cb, &PL_sv_undef);
2383
2384 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2385 coro->saved_deffh = 0;
2386
2387 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2388 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2389 {
2390 SV *old = PL_diehook;
2391 PL_diehook = 0;
2392 SvREFCNT_dec (old);
2393 croak ("\3async_pool terminate\2\n");
2394 }
2395
2396 av_clear (GvAV (PL_defgv));
2397 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2398 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2399
2400 coro->prio = 0;
2401
2402 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2403 api_trace (coro_current, 0);
2404
2405 av_push (av_async_pool, newSVsv (coro_current));
2406}
2407
2408#if 0
2409
2410void
2411_generator_call (...)
2412 PROTOTYPE: @
2413 PPCODE:
2414 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2415 xxxx
2416 abort ();
2417
2418SV *
2419gensub (SV *sub, ...)
2420 PROTOTYPE: &;@
2421 CODE:
2422{
2423 struct coro *coro;
2424 MAGIC *mg;
2425 CV *xcv;
2426 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2427 int i;
2428
2429 CvGV (ncv) = CvGV (cv);
2430 CvFILE (ncv) = CvFILE (cv);
2431
2432 Newz (0, coro, 1, struct coro);
2433 coro->args = newAV ();
2434 coro->flags = CF_NEW;
2435
2436 av_extend (coro->args, items - 1);
2437 for (i = 1; i < items; i++)
2438 av_push (coro->args, newSVsv (ST (i)));
2439
2440 CvISXSUB_on (ncv);
2441 CvXSUBANY (ncv).any_ptr = (void *)coro;
2442
2443 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2444
2445 CvXSUB (ncv) = CvXSUB (xcv);
2446 CvANON_on (ncv);
2447
2448 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2449 RETVAL = newRV_noinc ((SV *)ncv);
2450}
2451 OUTPUT: 4038 OUTPUT:
2452 RETVAL 4039 RETVAL
2453 4040
2454#endif
2455
2456
2457MODULE = Coro::State PACKAGE = Coro::AIO
2458
2459void 4041void
2460_get_state (SV *self) 4042rouse_wait (...)
4043 PROTOTYPE: ;$
2461 PPCODE: 4044 PPCODE:
2462{ 4045 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2463 AV *defav = GvAV (PL_defgv);
2464 AV *av = newAV ();
2465 int i;
2466 SV *data_sv = newSV (sizeof (struct io_state));
2467 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2468 SvCUR_set (data_sv, sizeof (struct io_state));
2469 SvPOK_only (data_sv);
2470
2471 data->errorno = errno;
2472 data->laststype = PL_laststype;
2473 data->laststatval = PL_laststatval;
2474 data->statcache = PL_statcache;
2475
2476 av_extend (av, AvFILLp (defav) + 1 + 1);
2477
2478 for (i = 0; i <= AvFILLp (defav); ++i)
2479 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2480
2481 av_push (av, data_sv);
2482
2483 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2484
2485 api_ready (self);
2486}
2487 4046
2488void 4047void
2489_set_state (SV *state) 4048on_enter (SV *block)
4049 ALIAS:
4050 on_leave = 1
2490 PROTOTYPE: $ 4051 PROTOTYPE: &
4052 CODE:
4053{
4054 struct coro *coro = SvSTATE_current;
4055 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4056
4057 block = s_get_cv_croak (block);
4058
4059 if (!*avp)
4060 *avp = newAV ();
4061
4062 av_push (*avp, SvREFCNT_inc (block));
4063
4064 if (!ix)
4065 on_enterleave_call (aTHX_ block);
4066
4067 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4068 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4069 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4070}
4071
4072
4073MODULE = Coro::State PACKAGE = PerlIO::cede
4074
4075BOOT:
4076 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4077
4078
4079MODULE = Coro::State PACKAGE = Coro::Semaphore
4080
4081SV *
4082new (SV *klass, SV *count = 0)
4083 CODE:
4084{
4085 int semcnt = 1;
4086
4087 if (count)
4088 {
4089 SvGETMAGIC (count);
4090
4091 if (SvOK (count))
4092 semcnt = SvIV (count);
4093 }
4094
4095 RETVAL = sv_bless (
4096 coro_waitarray_new (aTHX_ semcnt),
4097 GvSTASH (CvGV (cv))
4098 );
4099}
4100 OUTPUT:
4101 RETVAL
4102
4103# helper for Coro::Channel and others
4104SV *
4105_alloc (int count)
4106 CODE:
4107 RETVAL = coro_waitarray_new (aTHX_ count);
4108 OUTPUT:
4109 RETVAL
4110
4111SV *
4112count (SV *self)
4113 CODE:
4114 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4115 OUTPUT:
4116 RETVAL
4117
4118void
4119up (SV *self, int adjust = 1)
4120 ALIAS:
4121 adjust = 1
4122 CODE:
4123 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4124
4125void
4126down (...)
4127 CODE:
4128 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4129
4130void
4131wait (...)
4132 CODE:
4133 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4134
4135void
4136try (SV *self)
4137 PPCODE:
4138{
4139 AV *av = (AV *)SvRV (self);
4140 SV *count_sv = AvARRAY (av)[0];
4141 IV count = SvIVX (count_sv);
4142
4143 if (count > 0)
4144 {
4145 --count;
4146 SvIVX (count_sv) = count;
4147 XSRETURN_YES;
4148 }
4149 else
4150 XSRETURN_NO;
4151}
4152
4153void
4154waiters (SV *self)
4155 PPCODE:
4156{
4157 AV *av = (AV *)SvRV (self);
4158 int wcount = AvFILLp (av) + 1 - 1;
4159
4160 if (GIMME_V == G_SCALAR)
4161 XPUSHs (sv_2mortal (newSViv (wcount)));
4162 else
4163 {
4164 int i;
4165 EXTEND (SP, wcount);
4166 for (i = 1; i <= wcount; ++i)
4167 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4168 }
4169}
4170
4171MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4172
4173void
4174_may_delete (SV *sem, int count, unsigned int extra_refs)
2491 PPCODE: 4175 PPCODE:
2492{ 4176{
2493 AV *av = (AV *)SvRV (state); 4177 AV *av = (AV *)SvRV (sem);
2494 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2495 int i;
2496 4178
2497 errno = data->errorno; 4179 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2498 PL_laststype = data->laststype; 4180 && AvFILLp (av) == 0 /* no waiters, just count */
2499 PL_laststatval = data->laststatval; 4181 && SvIV (AvARRAY (av)[0]) == count)
2500 PL_statcache = data->statcache; 4182 XSRETURN_YES;
2501 4183
4184 XSRETURN_NO;
4185}
4186
4187MODULE = Coro::State PACKAGE = Coro::Signal
4188
4189SV *
4190new (SV *klass)
4191 CODE:
4192 RETVAL = sv_bless (
4193 coro_waitarray_new (aTHX_ 0),
4194 GvSTASH (CvGV (cv))
4195 );
4196 OUTPUT:
4197 RETVAL
4198
4199void
4200wait (...)
4201 CODE:
4202 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4203
4204void
4205broadcast (SV *self)
4206 CODE:
4207{
4208 AV *av = (AV *)SvRV (self);
4209 coro_signal_wake (aTHX_ av, AvFILLp (av));
4210}
4211
4212void
4213send (SV *self)
4214 CODE:
4215{
4216 AV *av = (AV *)SvRV (self);
4217
2502 EXTEND (SP, AvFILLp (av)); 4218 if (AvFILLp (av))
2503 for (i = 0; i < AvFILLp (av); ++i) 4219 coro_signal_wake (aTHX_ av, 1);
2504 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4220 else
4221 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2505} 4222}
4223
4224IV
4225awaited (SV *self)
4226 CODE:
4227 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4228 OUTPUT:
4229 RETVAL
2506 4230
2507 4231
2508MODULE = Coro::State PACKAGE = Coro::AnyEvent 4232MODULE = Coro::State PACKAGE = Coro::AnyEvent
2509 4233
2510BOOT: 4234BOOT:
2511 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4235 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2512 4236
2513SV * 4237void
2514_schedule (...) 4238_schedule (...)
2515 PROTOTYPE: @
2516 CODE: 4239 CODE:
2517{ 4240{
2518 static int incede; 4241 static int incede;
2519 4242
2520 api_cede_notself (); 4243 api_cede_notself (aTHX);
2521 4244
2522 ++incede; 4245 ++incede;
2523 while (coro_nready >= incede && api_cede ()) 4246 while (coro_nready >= incede && api_cede (aTHX))
2524 ; 4247 ;
2525 4248
2526 sv_setsv (sv_activity, &PL_sv_undef); 4249 sv_setsv (sv_activity, &PL_sv_undef);
2527 if (coro_nready >= incede) 4250 if (coro_nready >= incede)
2528 { 4251 {
2529 PUSHMARK (SP); 4252 PUSHMARK (SP);
2530 PUTBACK; 4253 PUTBACK;
2531 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4254 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2532 SPAGAIN;
2533 } 4255 }
2534 4256
2535 --incede; 4257 --incede;
2536} 4258}
2537 4259
2538 4260
2539MODULE = Coro::State PACKAGE = PerlIO::cede 4261MODULE = Coro::State PACKAGE = Coro::AIO
2540 4262
2541BOOT: 4263void
2542 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4264_register (char *target, char *proto, SV *req)
4265 CODE:
4266{
4267 SV *req_cv = s_get_cv_croak (req);
4268 /* newXSproto doesn't return the CV on 5.8 */
4269 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4270 sv_setpv ((SV *)slf_cv, proto);
4271 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4272}
2543 4273
4274MODULE = Coro::State PACKAGE = Coro::Select
4275
4276void
4277patch_pp_sselect ()
4278 CODE:
4279 if (!coro_old_pp_sselect)
4280 {
4281 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4282 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4283 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4284 }
4285
4286void
4287unpatch_pp_sselect ()
4288 CODE:
4289 if (coro_old_pp_sselect)
4290 {
4291 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4292 coro_old_pp_sselect = 0;
4293 }
4294

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