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Comparing Coro/Coro/State.xs (file contents):
Revision 1.291 by root, Tue Nov 18 05:55:04 2008 UTC vs.
Revision 1.428 by root, Wed Dec 5 16:34:12 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"
12 17
18#define ECB_NO_THREADS 1
19#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#if defined(_WIN32)
48# undef HAS_GETTIMEOFDAY
18# undef setjmp 49# undef setjmp
19# undef longjmp 50# undef longjmp
20# undef _exit 51# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 52# define setjmp _setjmp /* deep magic */
22#else 53#else
23# include <inttypes.h> /* most portable stdint.h */ 54# include <inttypes.h> /* most portable stdint.h */
24#endif 55#endif
25 56
26#ifdef HAVE_MMAP 57#if HAVE_MMAP
27# include <unistd.h> 58# include <unistd.h>
28# include <sys/mman.h> 59# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS 60# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON 61# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON 62# define MAP_ANONYMOUS MAP_ANON
… …
51#endif 82#endif
52 83
53/* the maximum number of idle cctx that will be pooled */ 84/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 85static int cctx_max_idle = 4;
55 86
56#define PERL_VERSION_ATLEAST(a,b,c) \ 87#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 88# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif 89#endif
108 90
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 91#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD 92# undef CORO_STACKGUARD
111#endif 93#endif
… …
120#endif 102#endif
121 103
122/* The next macros try to return the current stack pointer, in an as 104/* The next macros try to return the current stack pointer, in an as
123 * portable way as possible. */ 105 * portable way as possible. */
124#if __GNUC__ >= 4 106#if __GNUC__ >= 4
107# define dSTACKLEVEL int stacklevel_dummy
125# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 108# define STACKLEVEL __builtin_frame_address (0)
126#else 109#else
127# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 110# define dSTACKLEVEL volatile void *stacklevel
111# define STACKLEVEL ((void *)&stacklevel)
128#endif 112#endif
129 113
130#define IN_DESTRUCT (PL_main_cv == Nullcv) 114#define IN_DESTRUCT PL_dirty
131
132#if __GNUC__ >= 3
133# define attribute(x) __attribute__(x)
134# define expect(expr,value) __builtin_expect ((expr),(value))
135# define INLINE static inline
136#else
137# define attribute(x)
138# define expect(expr,value) (expr)
139# define INLINE static
140#endif
141
142#define expect_false(expr) expect ((expr) != 0, 0)
143#define expect_true(expr) expect ((expr) != 0, 1)
144
145#define NOINLINE attribute ((noinline))
146 115
147#include "CoroAPI.h" 116#include "CoroAPI.h"
117#define GCoroAPI (&coroapi) /* very sneaky */
148 118
149#ifdef USE_ITHREADS 119#ifdef USE_ITHREADS
150# if CORO_PTHREAD 120# if CORO_PTHREAD
151static void *coro_thx; 121static void *coro_thx;
152# endif 122# endif
153#endif 123#endif
154 124
125#ifdef __linux
126# include <time.h> /* for timespec */
127# include <syscall.h> /* for SYS_* */
128# ifdef SYS_clock_gettime
129# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
130# define CORO_CLOCK_MONOTONIC 1
131# define CORO_CLOCK_THREAD_CPUTIME_ID 3
132# endif
133#endif
134
155static double (*nvtime)(); /* so why doesn't it take void? */ 135static double (*nvtime)(); /* so why doesn't it take void? */
136static void (*u2time)(pTHX_ UV ret[2]);
156 137
157/* we hijack an hopefully unused CV flag for our purposes */ 138/* we hijack an hopefully unused CV flag for our purposes */
158#define CVf_SLF 0x4000 139#define CVf_SLF 0x4000
159static OP *pp_slf (pTHX); 140static OP *pp_slf (pTHX);
141static void slf_destroy (pTHX_ struct coro *coro);
160 142
161static U32 cctx_gen; 143static U32 cctx_gen;
162static size_t cctx_stacksize = CORO_STACKSIZE; 144static size_t cctx_stacksize = CORO_STACKSIZE;
163static struct CoroAPI coroapi; 145static struct CoroAPI coroapi;
164static AV *main_mainstack; /* used to differentiate between $main and others */ 146static AV *main_mainstack; /* used to differentiate between $main and others */
165static JMPENV *main_top_env; 147static JMPENV *main_top_env;
166static HV *coro_state_stash, *coro_stash; 148static HV *coro_state_stash, *coro_stash;
167static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 149static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
168 150
151static AV *av_destroy; /* destruction queue */
152static SV *sv_manager; /* the manager coro */
153static SV *sv_idle; /* $Coro::idle */
154
169static GV *irsgv; /* $/ */ 155static GV *irsgv; /* $/ */
170static GV *stdoutgv; /* *STDOUT */ 156static GV *stdoutgv; /* *STDOUT */
171static SV *rv_diehook; 157static SV *rv_diehook;
172static SV *rv_warnhook; 158static SV *rv_warnhook;
173static HV *hv_sig; /* %SIG */ 159static HV *hv_sig; /* %SIG */
174 160
175/* async_pool helper stuff */ 161/* async_pool helper stuff */
176static SV *sv_pool_rss; 162static SV *sv_pool_rss;
177static SV *sv_pool_size; 163static SV *sv_pool_size;
164static SV *sv_async_pool_idle; /* description string */
178static AV *av_async_pool; 165static AV *av_async_pool; /* idle pool */
166static SV *sv_Coro; /* class string */
167static CV *cv_pool_handler;
179 168
180/* Coro::AnyEvent */ 169/* Coro::AnyEvent */
181static SV *sv_activity; 170static SV *sv_activity;
182 171
172/* enable processtime/realtime profiling */
173static char enable_times;
174typedef U32 coro_ts[2];
175static coro_ts time_real, time_cpu;
176static char times_valid;
177
183static struct coro_cctx *cctx_first; 178static struct coro_cctx *cctx_first;
184static int cctx_count, cctx_idle; 179static int cctx_count, cctx_idle;
185 180
186enum { 181enum
182{
187 CC_MAPPED = 0x01, 183 CC_MAPPED = 0x01,
188 CC_NOREUSE = 0x02, /* throw this away after tracing */ 184 CC_NOREUSE = 0x02, /* throw this away after tracing */
189 CC_TRACE = 0x04, 185 CC_TRACE = 0x04,
190 CC_TRACE_SUB = 0x08, /* trace sub calls */ 186 CC_TRACE_SUB = 0x08, /* trace sub calls */
191 CC_TRACE_LINE = 0x10, /* trace each statement */ 187 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
201 void *sptr; 197 void *sptr;
202 size_t ssize; 198 size_t ssize;
203 199
204 /* cpu state */ 200 /* cpu state */
205 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 201 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
202#ifndef NDEBUG
206 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 203 JMPENV *idle_te; /* same as idle_sp, but for top_env */
204#endif
207 JMPENV *top_env; 205 JMPENV *top_env;
208 coro_context cctx; 206 coro_context cctx;
209 207
210 U32 gen; 208 U32 gen;
211#if CORO_USE_VALGRIND 209#if CORO_USE_VALGRIND
212 int valgrind_id; 210 int valgrind_id;
213#endif 211#endif
214 unsigned char flags; 212 unsigned char flags;
215} coro_cctx; 213} coro_cctx;
216 214
215static coro_cctx *cctx_current; /* the currently running cctx */
216
217/*****************************************************************************/
218
219static MGVTBL coro_state_vtbl;
220
217enum { 221enum
222{
218 CF_RUNNING = 0x0001, /* coroutine is running */ 223 CF_RUNNING = 0x0001, /* coroutine is running */
219 CF_READY = 0x0002, /* coroutine is ready */ 224 CF_READY = 0x0002, /* coroutine is ready */
220 CF_NEW = 0x0004, /* has never been switched to */ 225 CF_NEW = 0x0004, /* has never been switched to */
221 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 226 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
227 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
228 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
222}; 229};
223 230
224/* the structure where most of the perl state is stored, overlaid on the cxstack */ 231/* the structure where most of the perl state is stored, overlaid on the cxstack */
225typedef struct 232typedef struct
226{ 233{
227 SV *defsv;
228 AV *defav;
229 SV *errsv;
230 SV *irsgv;
231#define VAR(name,type) type name; 234 #define VARx(name,expr,type) type name;
232# include "state.h" 235 #include "state.h"
233#undef VAR
234} perl_slots; 236} perl_slots;
235 237
238/* how many context stack entries do we need for perl_slots */
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 240
238/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
239struct coro { 242struct coro
243{
240 /* the C coroutine allocated to this perl coroutine, if any */ 244 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 245 coro_cctx *cctx;
246
247 /* ready queue */
248 struct coro *next_ready;
242 249
243 /* state data */ 250 /* state data */
244 struct CoroSLF slf_frame; /* saved slf frame */ 251 struct CoroSLF slf_frame; /* saved slf frame */
245 AV *mainstack; 252 AV *mainstack;
246 perl_slots *slot; /* basically the saved sp */ 253 perl_slots *slot; /* basically the saved sp */
247 254
255 CV *startcv; /* the CV to execute */
248 AV *args; /* data associated with this coroutine (initial args) */ 256 AV *args; /* data associated with this coroutine (initial args) */
249 int refcnt; /* coroutines are refcounted, yes */
250 int flags; /* CF_ flags */ 257 int flags; /* CF_ flags */
251 HV *hv; /* the perl hash associated with this coro, if any */ 258 HV *hv; /* the perl hash associated with this coro, if any */
252 void (*on_destroy)(pTHX_ struct coro *coro);
253 259
254 /* statistics */ 260 /* statistics */
255 int usecount; /* number of transfers to this coro */ 261 int usecount; /* number of transfers to this coro */
256 262
257 /* coro process data */ 263 /* coro process data */
258 int prio; 264 int prio;
259 SV *throw; /* exception to be thrown */ 265 SV *except; /* exception to be thrown */
266 SV *rouse_cb; /* last rouse callback */
267 AV *on_destroy; /* callbacks or coros to notify on destroy */
268 AV *status; /* the exit status list */
260 269
261 /* async_pool */ 270 /* async_pool */
262 SV *saved_deffh; 271 SV *saved_deffh;
272 SV *invoke_cb;
273 AV *invoke_av;
274
275 /* on_enter/on_leave */
276 AV *on_enter;
277 AV *on_leave;
278
279 /* swap_sv */
280 AV *swap_sv;
281
282 /* times */
283 coro_ts t_cpu, t_real;
263 284
264 /* linked list */ 285 /* linked list */
265 struct coro *next, *prev; 286 struct coro *next, *prev;
266}; 287};
267 288
268typedef struct coro *Coro__State; 289typedef struct coro *Coro__State;
269typedef struct coro *Coro__State_or_hashref; 290typedef struct coro *Coro__State_or_hashref;
270 291
271/* the following variables are effectively part of the perl context */ 292/* the following variables are effectively part of the perl context */
272/* and get copied between struct coro and these variables */ 293/* and get copied between struct coro and these variables */
273/* the mainr easonw e don't support windows process emulation */ 294/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 295static struct CoroSLF slf_frame; /* the current slf frame */
275static SV *coro_throw;
276 296
277/** Coro ********************************************************************/ 297/** Coro ********************************************************************/
278 298
279#define PRIO_MAX 3 299#define CORO_PRIO_MAX 3
280#define PRIO_HIGH 1 300#define CORO_PRIO_HIGH 1
281#define PRIO_NORMAL 0 301#define CORO_PRIO_NORMAL 0
282#define PRIO_LOW -1 302#define CORO_PRIO_LOW -1
283#define PRIO_IDLE -3 303#define CORO_PRIO_IDLE -3
284#define PRIO_MIN -4 304#define CORO_PRIO_MIN -4
285 305
286/* for Coro.pm */ 306/* for Coro.pm */
287static SV *coro_current; 307static SV *coro_current;
288static SV *coro_readyhook; 308static SV *coro_readyhook;
289static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 309static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
310static CV *cv_coro_run;
290static struct coro *coro_first; 311static struct coro *coro_first;
291#define coro_nready coroapi.nready 312#define coro_nready coroapi.nready
292 313
314/** JIT *********************************************************************/
315
316#if CORO_JIT
317 /* APPLE doesn't have HAVE_MMAP though */
318 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
319 #ifndef CORO_JIT_TYPE
320 #if __x86_64 && CORO_JIT_UNIXY
321 #define CORO_JIT_TYPE "amd64-unix"
322 #elif __i386 && CORO_JIT_UNIXY
323 #define CORO_JIT_TYPE "x86-unix"
324 #endif
325 #endif
326#endif
327
328#if !defined(CORO_JIT_TYPE) || !HAVE_MMAP
329 #undef CORO_JIT
330#endif
331
332#if CORO_JIT
333 typedef void (*load_save_perl_slots_type)(perl_slots *);
334 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
335#endif
336
337/** Coro::Select ************************************************************/
338
339static OP *(*coro_old_pp_sselect) (pTHX);
340static SV *coro_select_select;
341
342/* horrible hack, but if it works... */
343static OP *
344coro_pp_sselect (pTHX)
345{
346 dSP;
347 PUSHMARK (SP - 4); /* fake argument list */
348 XPUSHs (coro_select_select);
349 PUTBACK;
350
351 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
352 PL_op->op_flags |= OPf_STACKED;
353 PL_op->op_private = 0;
354 return PL_ppaddr [OP_ENTERSUB](aTHX);
355}
356
357/** time stuff **************************************************************/
358
359#ifdef HAS_GETTIMEOFDAY
360
361ecb_inline void
362coro_u2time (pTHX_ UV ret[2])
363{
364 struct timeval tv;
365 gettimeofday (&tv, 0);
366
367 ret [0] = tv.tv_sec;
368 ret [1] = tv.tv_usec;
369}
370
371ecb_inline double
372coro_nvtime (void)
373{
374 struct timeval tv;
375 gettimeofday (&tv, 0);
376
377 return tv.tv_sec + tv.tv_usec * 1e-6;
378}
379
380ecb_inline void
381time_init (pTHX)
382{
383 nvtime = coro_nvtime;
384 u2time = coro_u2time;
385}
386
387#else
388
389ecb_inline void
390time_init (pTHX)
391{
392 SV **svp;
393
394 require_pv ("Time/HiRes.pm");
395
396 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
397
398 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
399 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
400
401 nvtime = INT2PTR (double (*)(), SvIV (*svp));
402
403 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
404 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
405}
406
407#endif
408
293/** lowlevel stuff **********************************************************/ 409/** lowlevel stuff **********************************************************/
294 410
295static SV * 411static SV * ecb_noinline
296coro_get_sv (pTHX_ const char *name, int create) 412coro_get_sv (pTHX_ const char *name, int create)
297{ 413{
298#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
299 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
300 get_sv (name, create); 416 get_sv (name, create);
301#endif 417#endif
302 return get_sv (name, create); 418 return get_sv (name, create);
303} 419}
304 420
305static AV * 421static AV * ecb_noinline
306coro_get_av (pTHX_ const char *name, int create) 422coro_get_av (pTHX_ const char *name, int create)
307{ 423{
308#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
309 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
310 get_av (name, create); 426 get_av (name, create);
311#endif 427#endif
312 return get_av (name, create); 428 return get_av (name, create);
313} 429}
314 430
315static HV * 431static HV * ecb_noinline
316coro_get_hv (pTHX_ const char *name, int create) 432coro_get_hv (pTHX_ const char *name, int create)
317{ 433{
318#if PERL_VERSION_ATLEAST (5,10,0) 434#if PERL_VERSION_ATLEAST (5,10,0)
319 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 435 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
320 get_hv (name, create); 436 get_hv (name, create);
321#endif 437#endif
322 return get_hv (name, create); 438 return get_hv (name, create);
323} 439}
324 440
325static AV * 441ecb_inline void
442coro_times_update (void)
443{
444#ifdef coro_clock_gettime
445 struct timespec ts;
446
447 ts.tv_sec = ts.tv_nsec = 0;
448 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
449 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
450
451 ts.tv_sec = ts.tv_nsec = 0;
452 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
453 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
454#else
455 dTHX;
456 UV tv[2];
457
458 u2time (aTHX_ tv);
459 time_real [0] = tv [0];
460 time_real [1] = tv [1] * 1000;
461#endif
462}
463
464ecb_inline void
465coro_times_add (struct coro *c)
466{
467 c->t_real [1] += time_real [1];
468 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
469 c->t_real [0] += time_real [0];
470
471 c->t_cpu [1] += time_cpu [1];
472 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
473 c->t_cpu [0] += time_cpu [0];
474}
475
476ecb_inline void
477coro_times_sub (struct coro *c)
478{
479 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
480 c->t_real [1] -= time_real [1];
481 c->t_real [0] -= time_real [0];
482
483 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
484 c->t_cpu [1] -= time_cpu [1];
485 c->t_cpu [0] -= time_cpu [0];
486}
487
488/*****************************************************************************/
489/* magic glue */
490
491#define CORO_MAGIC_type_cv 26
492#define CORO_MAGIC_type_state PERL_MAGIC_ext
493
494#define CORO_MAGIC_NN(sv, type) \
495 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
496 ? SvMAGIC (sv) \
497 : mg_find (sv, type))
498
499#define CORO_MAGIC(sv, type) \
500 (ecb_expect_true (SvMAGIC (sv)) \
501 ? CORO_MAGIC_NN (sv, type) \
502 : 0)
503
504#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
505#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
506
507ecb_inline MAGIC *
508SvSTATEhv_p (pTHX_ SV *coro)
509{
510 MAGIC *mg;
511
512 if (ecb_expect_true (
513 SvTYPE (coro) == SVt_PVHV
514 && (mg = CORO_MAGIC_state (coro))
515 && mg->mg_virtual == &coro_state_vtbl
516 ))
517 return mg;
518
519 return 0;
520}
521
522ecb_inline struct coro *
523SvSTATE_ (pTHX_ SV *coro)
524{
525 MAGIC *mg;
526
527 if (SvROK (coro))
528 coro = SvRV (coro);
529
530 mg = SvSTATEhv_p (aTHX_ coro);
531 if (!mg)
532 croak ("Coro::State object required");
533
534 return (struct coro *)mg->mg_ptr;
535}
536
537#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
538
539/* faster than SvSTATE, but expects a coroutine hv */
540#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
541#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
542
543/*****************************************************************************/
544/* padlist management and caching */
545
546ecb_inline PADLIST *
326coro_clone_padlist (pTHX_ CV *cv) 547coro_derive_padlist (pTHX_ CV *cv)
327{ 548{
328 AV *padlist = CvPADLIST (cv); 549 PADLIST *padlist = CvPADLIST (cv);
329 AV *newpadlist, *newpad; 550 PADLIST *newpadlist;
551 PAD *newpad;
552 PADOFFSET const off = PadlistMAX (padlist) + 1;
330 553
331 newpadlist = newAV (); 554 newPADLIST(newpadlist);
555#if !PERL_VERSION_ATLEAST(5,15,3)
556 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
332 AvREAL_off (newpadlist); 557 AvREAL_off (newpadlist);
558#endif
333#if PERL_VERSION_ATLEAST (5,10,0) 559#if PERL_VERSION_ATLEAST (5,10,0)
334 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 560 Perl_pad_push (aTHX_ padlist, off);
335#else 561#else
336 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); 562 Perl_pad_push (aTHX_ padlist, off, 1);
337#endif 563#endif
338 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; 564 newpad = PadlistARRAY (padlist)[off];
339 --AvFILLp (padlist); 565 PadlistMAX (padlist) = off - 1;
340 566
341 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 567 /* Already extended to 2 elements by newPADLIST. */
342 av_store (newpadlist, 1, (SV *)newpad); 568 PadlistMAX (newpadlist) = 1;
569 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
570 PadlistARRAY (newpadlist)[1] = newpad;
343 571
344 return newpadlist; 572 return newpadlist;
345} 573}
346 574
347static void 575ecb_inline void
348free_padlist (pTHX_ AV *padlist) 576free_padlist (pTHX_ PADLIST *padlist)
349{ 577{
350 /* may be during global destruction */ 578 /* may be during global destruction */
351 if (SvREFCNT (padlist)) 579 if (!IN_DESTRUCT)
352 { 580 {
353 I32 i = AvFILLp (padlist); 581 I32 i = PadlistMAX (padlist);
354 while (i >= 0) 582
583 while (i > 0) /* special-case index 0 */
355 { 584 {
356 SV **svp = av_fetch (padlist, i--, FALSE); 585 /* we try to be extra-careful here */
357 if (svp) 586 PAD *pad = PadlistARRAY (padlist)[i--];
358 { 587 I32 j = PadMAX (pad);
359 SV *sv;
360 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
361 SvREFCNT_dec (sv);
362 588
589 while (j >= 0)
590 SvREFCNT_dec (PadARRAY (pad)[j--]);
591
592 PadMAX (pad) = -1;
363 SvREFCNT_dec (*svp); 593 SvREFCNT_dec (pad);
364 }
365 } 594 }
366 595
596 SvREFCNT_dec (PadlistNAMES (padlist));
597
598#ifdef NEWPADAPI
599 Safefree (PadlistARRAY (padlist));
600 Safefree (padlist);
601#else
602 AvFILLp (padlist) = -1;
603 AvREAL_off (padlist);
367 SvREFCNT_dec ((SV*)padlist); 604 SvREFCNT_dec ((SV*)padlist);
605#endif
368 } 606 }
369} 607}
370 608
371static int 609static int
372coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 610coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
373{ 611{
374 AV *padlist; 612 PADLIST *padlist;
375 AV *av = (AV *)mg->mg_obj; 613 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
614 size_t len = *(size_t *)mg->mg_ptr;
376 615
377 /* casting is fun. */ 616 /* perl manages to free our internal AV and _then_ call us */
378 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 617 if (IN_DESTRUCT)
618 return 0;
619
620 while (len--)
379 free_padlist (aTHX_ padlist); 621 free_padlist (aTHX_ padlists[len]);
380
381 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
382 622
383 return 0; 623 return 0;
384} 624}
385
386#define CORO_MAGIC_type_cv 26
387#define CORO_MAGIC_type_state PERL_MAGIC_ext
388 625
389static MGVTBL coro_cv_vtbl = { 626static MGVTBL coro_cv_vtbl = {
390 0, 0, 0, 0, 627 0, 0, 0, 0,
391 coro_cv_free 628 coro_cv_free
392}; 629};
393 630
394#define CORO_MAGIC_NN(sv, type) \
395 (expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type))
398
399#define CORO_MAGIC(sv, type) \
400 (expect_true (SvMAGIC (sv)) \
401 ? CORO_MAGIC_NN (sv, type) \
402 : 0)
403
404#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
405#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
406
407INLINE struct coro *
408SvSTATE_ (pTHX_ SV *coro)
409{
410 HV *stash;
411 MAGIC *mg;
412
413 if (SvROK (coro))
414 coro = SvRV (coro);
415
416 if (expect_false (SvTYPE (coro) != SVt_PVHV))
417 croak ("Coro::State object required");
418
419 stash = SvSTASH (coro);
420 if (expect_false (stash != coro_stash && stash != coro_state_stash))
421 {
422 /* very slow, but rare, check */
423 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
424 croak ("Coro::State object required");
425 }
426
427 mg = CORO_MAGIC_state (coro);
428 return (struct coro *)mg->mg_ptr;
429}
430
431#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
432
433/* faster than SvSTATE, but expects a coroutine hv */
434#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
435#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
436
437/* the next two functions merely cache the padlists */ 631/* the next two functions merely cache the padlists */
438static void 632ecb_inline void
439get_padlist (pTHX_ CV *cv) 633get_padlist (pTHX_ CV *cv)
440{ 634{
441 MAGIC *mg = CORO_MAGIC_cv (cv); 635 MAGIC *mg = CORO_MAGIC_cv (cv);
442 AV *av; 636 size_t *lenp;
443 637
444 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 638 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
445 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 639 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
446 else 640 else
447 { 641 {
448#if CORO_PREFER_PERL_FUNCTIONS 642#if CORO_PREFER_PERL_FUNCTIONS
449 /* this is probably cleaner? but also slower! */ 643 /* this is probably cleaner? but also slower! */
450 /* in practise, it seems to be less stable */ 644 /* in practise, it seems to be less stable */
451 CV *cp = Perl_cv_clone (cv); 645 CV *cp = Perl_cv_clone (aTHX_ cv);
452 CvPADLIST (cv) = CvPADLIST (cp); 646 CvPADLIST (cv) = CvPADLIST (cp);
453 CvPADLIST (cp) = 0; 647 CvPADLIST (cp) = 0;
454 SvREFCNT_dec (cp); 648 SvREFCNT_dec (cp);
455#else 649#else
456 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 650 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
457#endif 651#endif
458 } 652 }
459} 653}
460 654
461static void 655ecb_inline void
462put_padlist (pTHX_ CV *cv) 656put_padlist (pTHX_ CV *cv)
463{ 657{
464 MAGIC *mg = CORO_MAGIC_cv (cv); 658 MAGIC *mg = CORO_MAGIC_cv (cv);
465 AV *av;
466 659
467 if (expect_false (!mg)) 660 if (ecb_expect_false (!mg))
661 {
468 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 662 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
663 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
664 mg->mg_len = 1; /* so mg_free frees mg_ptr */
665 }
666 else
667 Renew (mg->mg_ptr,
668 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
669 char);
469 670
470 av = (AV *)mg->mg_obj; 671 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
471
472 if (expect_false (AvFILLp (av) >= AvMAX (av)))
473 av_extend (av, AvMAX (av) + 1);
474
475 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
476} 672}
477 673
478/** load & save, init *******************************************************/ 674/** load & save, init *******************************************************/
675
676ecb_inline void
677swap_sv (SV *a, SV *b)
678{
679 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
680 SV tmp;
681
682 /* swap sv_any */
683 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
684
685 /* swap sv_flags */
686 SvFLAGS (&tmp) = SvFLAGS (a);
687 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
688 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
689
690#if PERL_VERSION_ATLEAST (5,10,0)
691 /* perl 5.10 and later complicates this _quite_ a bit, but it also
692 * is much faster, so no quarrels here. alternatively, we could
693 * sv_upgrade to avoid this.
694 */
695 {
696 /* swap sv_u */
697 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
698
699 /* if SvANY points to the head, we need to adjust the pointers,
700 * as the pointer for a still points to b, and maybe vice versa.
701 */
702 #define svany_in_head(type) \
703 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
704
705 if (svany_in_head (SvTYPE (a)))
706 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
707
708 if (svany_in_head (SvTYPE (b)))
709 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
710 }
711#endif
712}
713
714/* swap sv heads, at least logically */
715static void
716swap_svs (pTHX_ Coro__State c)
717{
718 int i;
719
720 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
721 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
722}
723
724#define SWAP_SVS(coro) \
725 if (ecb_expect_false ((coro)->swap_sv)) \
726 swap_svs (aTHX_ (coro))
727
728static void
729on_enterleave_call (pTHX_ SV *cb);
479 730
480static void 731static void
481load_perl (pTHX_ Coro__State c) 732load_perl (pTHX_ Coro__State c)
482{ 733{
483 perl_slots *slot = c->slot; 734 perl_slots *slot = c->slot;
484 c->slot = 0; 735 c->slot = 0;
485 736
486 PL_mainstack = c->mainstack; 737 PL_mainstack = c->mainstack;
487 738
488 GvSV (PL_defgv) = slot->defsv; 739#if CORO_JIT
489 GvAV (PL_defgv) = slot->defav; 740 load_perl_slots (slot);
490 GvSV (PL_errgv) = slot->errsv; 741#else
491 GvSV (irsgv) = slot->irsgv;
492
493 #define VAR(name,type) PL_ ## name = slot->name; 742 #define VARx(name,expr,type) expr = slot->name;
494 # include "state.h" 743 #include "state.h"
495 #undef VAR 744#endif
496 745
497 { 746 {
498 dSP; 747 dSP;
499 748
500 CV *cv; 749 CV *cv;
501 750
502 /* now do the ugly restore mess */ 751 /* now do the ugly restore mess */
503 while (expect_true (cv = (CV *)POPs)) 752 while (ecb_expect_true (cv = (CV *)POPs))
504 { 753 {
505 put_padlist (aTHX_ cv); /* mark this padlist as available */ 754 put_padlist (aTHX_ cv); /* mark this padlist as available */
506 CvDEPTH (cv) = PTR2IV (POPs); 755 CvDEPTH (cv) = PTR2IV (POPs);
507 CvPADLIST (cv) = (AV *)POPs; 756 CvPADLIST (cv) = (PADLIST *)POPs;
508 } 757 }
509 758
510 PUTBACK; 759 PUTBACK;
511 } 760 }
512 761
513 slf_frame = c->slf_frame; 762 slf_frame = c->slf_frame;
514 coro_throw = c->throw; 763 CORO_THROW = c->except;
764
765 if (ecb_expect_false (enable_times))
766 {
767 if (ecb_expect_false (!times_valid))
768 coro_times_update ();
769
770 coro_times_sub (c);
771 }
772
773 if (ecb_expect_false (c->on_enter))
774 {
775 int i;
776
777 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
778 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
779 }
780
781 SWAP_SVS (c);
515} 782}
516 783
517static void 784static void
518save_perl (pTHX_ Coro__State c) 785save_perl (pTHX_ Coro__State c)
519{ 786{
520 c->throw = coro_throw; 787 SWAP_SVS (c);
788
789 if (ecb_expect_false (c->on_leave))
790 {
791 int i;
792
793 for (i = AvFILLp (c->on_leave); i >= 0; --i)
794 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
795 }
796
797 times_valid = 0;
798
799 if (ecb_expect_false (enable_times))
800 {
801 coro_times_update (); times_valid = 1;
802 coro_times_add (c);
803 }
804
805 c->except = CORO_THROW;
521 c->slf_frame = slf_frame; 806 c->slf_frame = slf_frame;
522 807
523 { 808 {
524 dSP; 809 dSP;
525 I32 cxix = cxstack_ix; 810 I32 cxix = cxstack_ix;
… …
533 818
534 XPUSHs (Nullsv); 819 XPUSHs (Nullsv);
535 /* this loop was inspired by pp_caller */ 820 /* this loop was inspired by pp_caller */
536 for (;;) 821 for (;;)
537 { 822 {
538 while (expect_true (cxix >= 0)) 823 while (ecb_expect_true (cxix >= 0))
539 { 824 {
540 PERL_CONTEXT *cx = &ccstk[cxix--]; 825 PERL_CONTEXT *cx = &ccstk[cxix--];
541 826
542 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 827 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
543 { 828 {
544 CV *cv = cx->blk_sub.cv; 829 CV *cv = cx->blk_sub.cv;
545 830
546 if (expect_true (CvDEPTH (cv))) 831 if (ecb_expect_true (CvDEPTH (cv)))
547 { 832 {
548 EXTEND (SP, 3); 833 EXTEND (SP, 3);
549 PUSHs ((SV *)CvPADLIST (cv)); 834 PUSHs ((SV *)CvPADLIST (cv));
550 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 835 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
551 PUSHs ((SV *)cv); 836 PUSHs ((SV *)cv);
… …
554 get_padlist (aTHX_ cv); 839 get_padlist (aTHX_ cv);
555 } 840 }
556 } 841 }
557 } 842 }
558 843
559 if (expect_true (top_si->si_type == PERLSI_MAIN)) 844 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
560 break; 845 break;
561 846
562 top_si = top_si->si_prev; 847 top_si = top_si->si_prev;
563 ccstk = top_si->si_cxstack; 848 ccstk = top_si->si_cxstack;
564 cxix = top_si->si_cxix; 849 cxix = top_si->si_cxix;
… …
566 851
567 PUTBACK; 852 PUTBACK;
568 } 853 }
569 854
570 /* allocate some space on the context stack for our purposes */ 855 /* allocate some space on the context stack for our purposes */
571 /* we manually unroll here, as usually 2 slots is enough */ 856 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
572 if (SLOT_COUNT >= 1) CXINC;
573 if (SLOT_COUNT >= 2) CXINC;
574 if (SLOT_COUNT >= 3) CXINC;
575 { 857 {
576 int i; 858 unsigned int i;
859
577 for (i = 3; i < SLOT_COUNT; ++i) 860 for (i = 0; i < SLOT_COUNT; ++i)
578 CXINC; 861 CXINC;
579 } 862
580 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 863 cxstack_ix -= SLOT_COUNT; /* undo allocation */
864 }
581 865
582 c->mainstack = PL_mainstack; 866 c->mainstack = PL_mainstack;
583 867
584 { 868 {
585 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 869 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
586 870
587 slot->defav = GvAV (PL_defgv); 871#if CORO_JIT
588 slot->defsv = DEFSV; 872 save_perl_slots (slot);
589 slot->errsv = ERRSV; 873#else
590 slot->irsgv = GvSV (irsgv);
591
592 #define VAR(name,type) slot->name = PL_ ## name; 874 #define VARx(name,expr,type) slot->name = expr;
593 # include "state.h" 875 #include "state.h"
594 #undef VAR 876#endif
595 } 877 }
596} 878}
597 879
598/* 880/*
599 * allocate various perl stacks. This is almost an exact copy 881 * allocate various perl stacks. This is almost an exact copy
600 * of perl.c:init_stacks, except that it uses less memory 882 * of perl.c:init_stacks, except that it uses less memory
601 * on the (sometimes correct) assumption that coroutines do 883 * on the (sometimes correct) assumption that coroutines do
602 * not usually need a lot of stackspace. 884 * not usually need a lot of stackspace.
603 */ 885 */
604#if CORO_PREFER_PERL_FUNCTIONS 886#if CORO_PREFER_PERL_FUNCTIONS
605# define coro_init_stacks init_stacks 887# define coro_init_stacks(thx) init_stacks ()
606#else 888#else
607static void 889static void
608coro_init_stacks (pTHX) 890coro_init_stacks (pTHX)
609{ 891{
610 PL_curstackinfo = new_stackinfo(32, 8); 892 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
611 PL_curstackinfo->si_type = PERLSI_MAIN; 893 PL_curstackinfo->si_type = PERLSI_MAIN;
612 PL_curstack = PL_curstackinfo->si_stack; 894 PL_curstack = PL_curstackinfo->si_stack;
613 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 895 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
614 896
615 PL_stack_base = AvARRAY(PL_curstack); 897 PL_stack_base = AvARRAY(PL_curstack);
… …
630#endif 912#endif
631 913
632 New(54,PL_scopestack,8,I32); 914 New(54,PL_scopestack,8,I32);
633 PL_scopestack_ix = 0; 915 PL_scopestack_ix = 0;
634 PL_scopestack_max = 8; 916 PL_scopestack_max = 8;
917#if HAS_SCOPESTACK_NAME
918 New(54,PL_scopestack_name,8,const char*);
919#endif
635 920
636 New(54,PL_savestack,24,ANY); 921 New(54,PL_savestack,24,ANY);
637 PL_savestack_ix = 0; 922 PL_savestack_ix = 0;
638 PL_savestack_max = 24; 923 PL_savestack_max = 24;
639 924
… …
667 } 952 }
668 953
669 Safefree (PL_tmps_stack); 954 Safefree (PL_tmps_stack);
670 Safefree (PL_markstack); 955 Safefree (PL_markstack);
671 Safefree (PL_scopestack); 956 Safefree (PL_scopestack);
957#if HAS_SCOPESTACK_NAME
958 Safefree (PL_scopestack_name);
959#endif
672 Safefree (PL_savestack); 960 Safefree (PL_savestack);
673#if !PERL_VERSION_ATLEAST (5,10,0) 961#if !PERL_VERSION_ATLEAST (5,10,0)
674 Safefree (PL_retstack); 962 Safefree (PL_retstack);
675#endif 963#endif
676} 964}
677 965
966#define CORO_RSS \
967 rss += sizeof (SYM (curstackinfo)); \
968 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
969 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
970 rss += SYM (tmps_max) * sizeof (SV *); \
971 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
972 rss += SYM (scopestack_max) * sizeof (I32); \
973 rss += SYM (savestack_max) * sizeof (ANY);
974
678static size_t 975static size_t
679coro_rss (pTHX_ struct coro *coro) 976coro_rss (pTHX_ struct coro *coro)
680{ 977{
681 size_t rss = sizeof (*coro); 978 size_t rss = sizeof (*coro);
682 979
683 if (coro->mainstack) 980 if (coro->mainstack)
684 { 981 {
685 perl_slots tmp_slot;
686 perl_slots *slot;
687
688 if (coro->flags & CF_RUNNING) 982 if (coro->flags & CF_RUNNING)
689 { 983 {
690 slot = &tmp_slot; 984 #define SYM(sym) PL_ ## sym
691 985 CORO_RSS;
692 #define VAR(name,type) slot->name = PL_ ## name;
693 # include "state.h"
694 #undef VAR 986 #undef SYM
695 } 987 }
696 else 988 else
697 slot = coro->slot;
698
699 if (slot)
700 { 989 {
701 rss += sizeof (slot->curstackinfo); 990 #define SYM(sym) coro->slot->sym
702 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 991 CORO_RSS;
703 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 992 #undef SYM
704 rss += slot->tmps_max * sizeof (SV *);
705 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
706 rss += slot->scopestack_max * sizeof (I32);
707 rss += slot->savestack_max * sizeof (ANY);
708
709#if !PERL_VERSION_ATLEAST (5,10,0)
710 rss += slot->retstack_max * sizeof (OP *);
711#endif
712 } 993 }
713 } 994 }
714 995
715 return rss; 996 return rss;
716} 997}
… …
729#endif 1010#endif
730 1011
731/* 1012/*
732 * This overrides the default magic get method of %SIG elements. 1013 * This overrides the default magic get method of %SIG elements.
733 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1014 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
734 * and instead of tryign to save and restore the hash elements, we just provide 1015 * and instead of trying to save and restore the hash elements (extremely slow),
735 * readback here. 1016 * we just provide our own readback here.
736 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
737 * not expecting this to actually change the hook. This is a potential problem
738 * when a schedule happens then, but we ignore this.
739 */ 1017 */
740static int 1018static int ecb_cold
741coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1019coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
742{ 1020{
743 const char *s = MgPV_nolen_const (mg); 1021 const char *s = MgPV_nolen_const (mg);
744 1022
745 if (*s == '_') 1023 if (*s == '_')
746 { 1024 {
747 SV **svp = 0; 1025 SV **svp = 0;
748 1026
749 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1027 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
750 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1028 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
751 1029
752 if (svp) 1030 if (svp)
753 { 1031 {
754 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1032 SV *ssv;
1033
1034 if (!*svp)
1035 ssv = &PL_sv_undef;
1036 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1037 ssv = sv_2mortal (newRV_inc (*svp));
1038 else
1039 ssv = *svp;
1040
1041 sv_setsv (sv, ssv);
755 return 0; 1042 return 0;
756 } 1043 }
757 } 1044 }
758 1045
759 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1046 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
760} 1047}
761 1048
762static int 1049static int ecb_cold
763coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1050coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
764{ 1051{
765 const char *s = MgPV_nolen_const (mg); 1052 const char *s = MgPV_nolen_const (mg);
766 1053
767 if (*s == '_') 1054 if (*s == '_')
… …
781 } 1068 }
782 1069
783 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1070 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
784} 1071}
785 1072
786static int 1073static int ecb_cold
787coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1074coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
788{ 1075{
789 const char *s = MgPV_nolen_const (mg); 1076 const char *s = MgPV_nolen_const (mg);
790 1077
791 if (*s == '_') 1078 if (*s == '_')
… …
796 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1083 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
797 1084
798 if (svp) 1085 if (svp)
799 { 1086 {
800 SV *old = *svp; 1087 SV *old = *svp;
801 *svp = newSVsv (sv); 1088 *svp = SvOK (sv) ? newSVsv (sv) : 0;
802 SvREFCNT_dec (old); 1089 SvREFCNT_dec (old);
803 return 0; 1090 return 0;
804 } 1091 }
805 } 1092 }
806 1093
… …
818slf_check_nop (pTHX_ struct CoroSLF *frame) 1105slf_check_nop (pTHX_ struct CoroSLF *frame)
819{ 1106{
820 return 0; 1107 return 0;
821} 1108}
822 1109
823static UNOP coro_setup_op; 1110static int
1111slf_check_repeat (pTHX_ struct CoroSLF *frame)
1112{
1113 return 1;
1114}
824 1115
825static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1116static UNOP init_perl_op;
1117
1118ecb_noinline static void /* noinline to keep it out of the transfer fast path */
826coro_setup (pTHX_ struct coro *coro) 1119init_perl (pTHX_ struct coro *coro)
827{ 1120{
828 /* 1121 /*
829 * emulate part of the perl startup here. 1122 * emulate part of the perl startup here.
830 */ 1123 */
831 coro_init_stacks (aTHX); 1124 coro_init_stacks (aTHX);
832 1125
833 PL_runops = RUNOPS_DEFAULT; 1126 PL_runops = RUNOPS_DEFAULT;
834 PL_curcop = &PL_compiling; 1127 PL_curcop = &PL_compiling;
835 PL_in_eval = EVAL_NULL; 1128 PL_in_eval = EVAL_NULL;
836 PL_comppad = 0; 1129 PL_comppad = 0;
1130 PL_comppad_name = 0;
1131 PL_comppad_name_fill = 0;
1132 PL_comppad_name_floor = 0;
837 PL_curpm = 0; 1133 PL_curpm = 0;
838 PL_curpad = 0; 1134 PL_curpad = 0;
839 PL_localizing = 0; 1135 PL_localizing = 0;
840 PL_dirty = 0;
841 PL_restartop = 0; 1136 PL_restartop = 0;
842#if PERL_VERSION_ATLEAST (5,10,0) 1137#if PERL_VERSION_ATLEAST (5,10,0)
843 PL_parser = 0; 1138 PL_parser = 0;
844#endif 1139#endif
1140 PL_hints = 0;
845 1141
846 /* recreate the die/warn hooks */ 1142 /* recreate the die/warn hooks */
847 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1143 PL_diehook = SvREFCNT_inc (rv_diehook);
848 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1144 PL_warnhook = SvREFCNT_inc (rv_warnhook);
849 1145
850 GvSV (PL_defgv) = newSV (0); 1146 GvSV (PL_defgv) = newSV (0);
851 GvAV (PL_defgv) = coro->args; coro->args = 0; 1147 GvAV (PL_defgv) = coro->args; coro->args = 0;
852 GvSV (PL_errgv) = newSV (0); 1148 GvSV (PL_errgv) = newSV (0);
853 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1149 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1150 GvHV (PL_hintgv) = 0;
854 PL_rs = newSVsv (GvSV (irsgv)); 1151 PL_rs = newSVsv (GvSV (irsgv));
855 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1152 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
856 1153
857 { 1154 {
858 dSP; 1155 dSP;
859 UNOP myop; 1156 UNOP myop;
860 1157
861 Zero (&myop, 1, UNOP); 1158 Zero (&myop, 1, UNOP);
862 myop.op_next = Nullop; 1159 myop.op_next = Nullop;
1160 myop.op_type = OP_ENTERSUB;
863 myop.op_flags = OPf_WANT_VOID; 1161 myop.op_flags = OPf_WANT_VOID;
864 1162
865 PUSHMARK (SP); 1163 PUSHMARK (SP);
866 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1164 PUSHs ((SV *)coro->startcv);
867 PUTBACK; 1165 PUTBACK;
868 PL_op = (OP *)&myop; 1166 PL_op = (OP *)&myop;
869 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1167 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
870 SPAGAIN;
871 } 1168 }
872 1169
873 /* this newly created coroutine might be run on an existing cctx which most 1170 /* this newly created coroutine might be run on an existing cctx which most
874 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1171 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
875 */ 1172 */
876 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1173 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
877 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1174 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1175 slf_frame.destroy = 0;
878 1176
879 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1177 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
880 coro_setup_op.op_type = OP_CUSTOM; 1178 init_perl_op.op_next = PL_op;
1179 init_perl_op.op_type = OP_ENTERSUB;
881 coro_setup_op.op_ppaddr = pp_slf; 1180 init_perl_op.op_ppaddr = pp_slf;
882 coro_setup_op.op_next = PL_op; 1181 /* no flags etc. required, as an init function won't be called */
883 1182
884 PL_op = (OP *)&coro_setup_op; 1183 PL_op = (OP *)&init_perl_op;
885 1184
886 /* copy throw, in case it was set before coro_setup */ 1185 /* copy throw, in case it was set before init_perl */
887 coro_throw = coro->throw; 1186 CORO_THROW = coro->except;
888}
889 1187
1188 SWAP_SVS (coro);
1189
1190 if (ecb_expect_false (enable_times))
1191 {
1192 coro_times_update ();
1193 coro_times_sub (coro);
1194 }
1195}
1196
890static void 1197static void
891coro_destruct (pTHX_ struct coro *coro) 1198coro_unwind_stacks (pTHX)
892{ 1199{
893 if (!IN_DESTRUCT) 1200 if (!IN_DESTRUCT)
894 { 1201 {
895 /* restore all saved variables and stuff */ 1202 /* restore all saved variables and stuff */
896 LEAVE_SCOPE (0); 1203 LEAVE_SCOPE (0);
… …
904 POPSTACK_TO (PL_mainstack); 1211 POPSTACK_TO (PL_mainstack);
905 1212
906 /* unwind main stack */ 1213 /* unwind main stack */
907 dounwind (-1); 1214 dounwind (-1);
908 } 1215 }
1216}
909 1217
910 SvREFCNT_dec (GvSV (PL_defgv)); 1218static void
911 SvREFCNT_dec (GvAV (PL_defgv)); 1219destroy_perl (pTHX_ struct coro *coro)
912 SvREFCNT_dec (GvSV (PL_errgv)); 1220{
913 SvREFCNT_dec (PL_defoutgv); 1221 SV *svf [9];
914 SvREFCNT_dec (PL_rs);
915 SvREFCNT_dec (GvSV (irsgv));
916 1222
917 SvREFCNT_dec (PL_diehook);
918 SvREFCNT_dec (PL_warnhook);
919 1223 {
1224 SV *old_current = SvRV (coro_current);
1225 struct coro *current = SvSTATE (old_current);
1226
1227 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1228
1229 save_perl (aTHX_ current);
1230
1231 /* this will cause transfer_check to croak on block*/
1232 SvRV_set (coro_current, (SV *)coro->hv);
1233
1234 load_perl (aTHX_ coro);
1235
1236 coro_unwind_stacks (aTHX);
1237
1238 /* restore swapped sv's */
1239 SWAP_SVS (coro);
1240
1241 coro_destruct_stacks (aTHX);
1242
1243 /* now save some sv's to be free'd later */
1244 svf [0] = GvSV (PL_defgv);
1245 svf [1] = (SV *)GvAV (PL_defgv);
1246 svf [2] = GvSV (PL_errgv);
1247 svf [3] = (SV *)PL_defoutgv;
1248 svf [4] = PL_rs;
1249 svf [5] = GvSV (irsgv);
1250 svf [6] = (SV *)GvHV (PL_hintgv);
1251 svf [7] = PL_diehook;
1252 svf [8] = PL_warnhook;
1253 assert (9 == sizeof (svf) / sizeof (*svf));
1254
1255 SvRV_set (coro_current, old_current);
1256
1257 load_perl (aTHX_ current);
1258 }
1259
1260 {
1261 unsigned int i;
1262
1263 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1264 SvREFCNT_dec (svf [i]);
1265
920 SvREFCNT_dec (coro->saved_deffh); 1266 SvREFCNT_dec (coro->saved_deffh);
921 SvREFCNT_dec (coro_throw); 1267 SvREFCNT_dec (coro->rouse_cb);
922 1268 SvREFCNT_dec (coro->invoke_cb);
923 coro_destruct_stacks (aTHX); 1269 SvREFCNT_dec (coro->invoke_av);
1270 }
924} 1271}
925 1272
926INLINE void 1273ecb_inline void
927free_coro_mortal (pTHX) 1274free_coro_mortal (pTHX)
928{ 1275{
929 if (expect_true (coro_mortal)) 1276 if (ecb_expect_true (coro_mortal))
930 { 1277 {
931 SvREFCNT_dec (coro_mortal); 1278 SvREFCNT_dec ((SV *)coro_mortal);
932 coro_mortal = 0; 1279 coro_mortal = 0;
933 } 1280 }
934} 1281}
935 1282
936static int 1283static int
937runops_trace (pTHX) 1284runops_trace (pTHX)
938{ 1285{
939 COP *oldcop = 0; 1286 COP *oldcop = 0;
940 int oldcxix = -2; 1287 int oldcxix = -2;
941 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
942 coro_cctx *cctx = coro->cctx;
943 1288
944 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1289 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
945 { 1290 {
946 PERL_ASYNC_CHECK (); 1291 PERL_ASYNC_CHECK ();
947 1292
948 if (cctx->flags & CC_TRACE_ALL) 1293 if (cctx_current->flags & CC_TRACE_ALL)
949 { 1294 {
950 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1295 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
951 { 1296 {
952 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1297 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
953 SV **bot, **top; 1298 SV **bot, **top;
954 AV *av = newAV (); /* return values */ 1299 AV *av = newAV (); /* return values */
955 SV **cb; 1300 SV **cb;
… …
992 1337
993 if (PL_curcop != &PL_compiling) 1338 if (PL_curcop != &PL_compiling)
994 { 1339 {
995 SV **cb; 1340 SV **cb;
996 1341
997 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1342 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
998 { 1343 {
999 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1344 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1000 1345
1001 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1346 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1002 { 1347 {
1003 runops_proc_t old_runops = PL_runops;
1004 dSP; 1348 dSP;
1005 GV *gv = CvGV (cx->blk_sub.cv); 1349 GV *gv = CvGV (cx->blk_sub.cv);
1006 SV *fullname = sv_2mortal (newSV (0)); 1350 SV *fullname = sv_2mortal (newSV (0));
1007 1351
1008 if (isGV (gv)) 1352 if (isGV (gv))
… …
1013 SAVETMPS; 1357 SAVETMPS;
1014 EXTEND (SP, 3); 1358 EXTEND (SP, 3);
1015 PUSHMARK (SP); 1359 PUSHMARK (SP);
1016 PUSHs (&PL_sv_yes); 1360 PUSHs (&PL_sv_yes);
1017 PUSHs (fullname); 1361 PUSHs (fullname);
1018 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1362 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1019 PUTBACK; 1363 PUTBACK;
1020 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1364 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1021 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1365 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1022 SPAGAIN; 1366 SPAGAIN;
1023 FREETMPS; 1367 FREETMPS;
… …
1026 } 1370 }
1027 1371
1028 oldcxix = cxstack_ix; 1372 oldcxix = cxstack_ix;
1029 } 1373 }
1030 1374
1031 if (cctx->flags & CC_TRACE_LINE) 1375 if (cctx_current->flags & CC_TRACE_LINE)
1032 { 1376 {
1033 dSP; 1377 dSP;
1034 1378
1035 PL_runops = RUNOPS_DEFAULT; 1379 PL_runops = RUNOPS_DEFAULT;
1036 ENTER; 1380 ENTER;
… …
1055 1399
1056 TAINT_NOT; 1400 TAINT_NOT;
1057 return 0; 1401 return 0;
1058} 1402}
1059 1403
1060static struct coro_cctx *cctx_ssl_cctx;
1061static struct CoroSLF cctx_ssl_frame; 1404static struct CoroSLF cctx_ssl_frame;
1062 1405
1063static void 1406static void
1064slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1407slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1065{ 1408{
1066 ta->prev = (struct coro *)cctx_ssl_cctx;
1067 ta->next = 0; 1409 ta->prev = 0;
1068} 1410}
1069 1411
1070static int 1412static int
1071slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1413slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1072{ 1414{
1073 *frame = cctx_ssl_frame; 1415 *frame = cctx_ssl_frame;
1074 1416
1075 return 1; 1417 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1076} 1418}
1077 1419
1078/* initialises PL_top_env and injects a pseudo-slf-call to sett he stacklevel */ 1420/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1079static void NOINLINE 1421static void ecb_noinline
1080cctx_prepare (pTHX_ coro_cctx *cctx) 1422cctx_prepare (pTHX)
1081{ 1423{
1082 PL_top_env = &PL_start_env; 1424 PL_top_env = &PL_start_env;
1083 1425
1084 if (cctx->flags & CC_TRACE) 1426 if (cctx_current->flags & CC_TRACE)
1085 PL_runops = runops_trace; 1427 PL_runops = runops_trace;
1086 1428
1087 /* we already must be in an SLF call, there is no other valid way 1429 /* we already must be executing an SLF op, there is no other valid way
1088 * that can lead to creation of a new cctx */ 1430 * that can lead to creation of a new cctx */
1089 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1431 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1090 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1432 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1091 1433
1092 cctx_ssl_cctx = cctx; 1434 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1093 cctx_ssl_frame = slf_frame; 1435 cctx_ssl_frame = slf_frame;
1094 1436
1095 slf_frame.prepare = slf_prepare_set_stacklevel; 1437 slf_frame.prepare = slf_prepare_set_stacklevel;
1096 slf_frame.check = slf_check_set_stacklevel; 1438 slf_frame.check = slf_check_set_stacklevel;
1097} 1439}
1098 1440
1099/* the tail of transfer: execute stuff we can only do after a transfer */ 1441/* the tail of transfer: execute stuff we can only do after a transfer */
1100INLINE void 1442ecb_inline void
1101transfer_tail (pTHX) 1443transfer_tail (pTHX)
1102{ 1444{
1103 free_coro_mortal (aTHX); 1445 free_coro_mortal (aTHX);
1446}
1447
1448/* try to exit the same way perl's main function would do */
1449/* we do not bother resetting the environment or other things *7
1450/* that are not, uhm, essential */
1451/* this obviously also doesn't work when perl is embedded */
1452static void ecb_noinline ecb_cold
1453perlish_exit (pTHX)
1454{
1455 int exitstatus = perl_destruct (PL_curinterp);
1456 perl_free (PL_curinterp);
1457 exit (exitstatus);
1104} 1458}
1105 1459
1106/* 1460/*
1107 * this is a _very_ stripped down perl interpreter ;) 1461 * this is a _very_ stripped down perl interpreter ;)
1108 */ 1462 */
… …
1120 /* normally we would need to skip the entersub here */ 1474 /* normally we would need to skip the entersub here */
1121 /* not doing so will re-execute it, which is exactly what we want */ 1475 /* not doing so will re-execute it, which is exactly what we want */
1122 /* PL_nop = PL_nop->op_next */ 1476 /* PL_nop = PL_nop->op_next */
1123 1477
1124 /* inject a fake subroutine call to cctx_init */ 1478 /* inject a fake subroutine call to cctx_init */
1125 cctx_prepare (aTHX_ (coro_cctx *)arg); 1479 cctx_prepare (aTHX);
1126 1480
1127 /* cctx_run is the alternative tail of transfer() */ 1481 /* cctx_run is the alternative tail of transfer() */
1128 transfer_tail (aTHX); 1482 transfer_tail (aTHX);
1129 1483
1130 /* somebody or something will hit me for both perl_run and PL_restartop */ 1484 /* somebody or something will hit me for both perl_run and PL_restartop */
1131 PL_restartop = PL_op; 1485 PL_restartop = PL_op;
1132 perl_run (PL_curinterp); 1486 perl_run (PL_curinterp);
1487 /*
1488 * Unfortunately, there is no way to get at the return values of the
1489 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1490 * runtime errors here, as this is just a random interpreter, not a thread.
1491 */
1133 1492
1134 /* 1493 /*
1135 * If perl-run returns we assume exit() was being called or the coro 1494 * If perl-run returns we assume exit() was being called or the coro
1136 * fell off the end, which seems to be the only valid (non-bug) 1495 * fell off the end, which seems to be the only valid (non-bug)
1137 * reason for perl_run to return. We try to exit by jumping to the 1496 * reason for perl_run to return. We try to mimic whatever perl is normally
1138 * bootstrap-time "top" top_env, as we cannot restore the "main" 1497 * doing in that case. YMMV.
1139 * coroutine as Coro has no such concept
1140 */ 1498 */
1141 PL_top_env = main_top_env; 1499 perlish_exit (aTHX);
1142 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1143 } 1500 }
1144} 1501}
1145 1502
1146static coro_cctx * 1503static coro_cctx *
1147cctx_new () 1504cctx_new (void)
1148{ 1505{
1149 coro_cctx *cctx; 1506 coro_cctx *cctx;
1150 1507
1151 ++cctx_count; 1508 ++cctx_count;
1152 New (0, cctx, 1, coro_cctx); 1509 New (0, cctx, 1, coro_cctx);
… …
1158 return cctx; 1515 return cctx;
1159} 1516}
1160 1517
1161/* create a new cctx only suitable as source */ 1518/* create a new cctx only suitable as source */
1162static coro_cctx * 1519static coro_cctx *
1163cctx_new_empty () 1520cctx_new_empty (void)
1164{ 1521{
1165 coro_cctx *cctx = cctx_new (); 1522 coro_cctx *cctx = cctx_new ();
1166 1523
1167 cctx->sptr = 0; 1524 cctx->sptr = 0;
1168 coro_create (&cctx->cctx, 0, 0, 0, 0); 1525 coro_create (&cctx->cctx, 0, 0, 0, 0);
… …
1170 return cctx; 1527 return cctx;
1171} 1528}
1172 1529
1173/* create a new cctx suitable as destination/running a perl interpreter */ 1530/* create a new cctx suitable as destination/running a perl interpreter */
1174static coro_cctx * 1531static coro_cctx *
1175cctx_new_run () 1532cctx_new_run (void)
1176{ 1533{
1177 coro_cctx *cctx = cctx_new (); 1534 coro_cctx *cctx = cctx_new ();
1178 void *stack_start; 1535 void *stack_start;
1179 size_t stack_size; 1536 size_t stack_size;
1180 1537
1538#if CORO_FIBER
1539
1540 cctx->ssize = cctx_stacksize * sizeof (long);
1541 cctx->sptr = 0;
1542
1543#else
1544
1181#if HAVE_MMAP 1545 #if HAVE_MMAP
1182 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1546 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1183 /* mmap supposedly does allocate-on-write for us */ 1547 /* mmap supposedly does allocate-on-write for us */
1184 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1548 cctx->sptr = mmap (0, cctx->ssize, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANONYMOUS, -1, 0);
1185 1549
1186 if (cctx->sptr != (void *)-1) 1550 if (cctx->sptr != (void *)-1)
1187 { 1551 {
1188 #if CORO_STACKGUARD 1552 #if CORO_STACKGUARD
1189 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1553 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1190 #endif 1554 #endif
1191 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; 1555 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1192 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1556 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1193 cctx->flags |= CC_MAPPED; 1557 cctx->flags |= CC_MAPPED;
1194 } 1558 }
1195 else 1559 else
1196#endif 1560 #endif
1197 { 1561 {
1198 cctx->ssize = cctx_stacksize * (long)sizeof (long); 1562 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1199 New (0, cctx->sptr, cctx_stacksize, long); 1563 New (0, cctx->sptr, cctx_stacksize, long);
1200 1564
1201 if (!cctx->sptr) 1565 if (!cctx->sptr)
1202 { 1566 {
1203 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1567 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1204 _exit (EXIT_FAILURE); 1568 _exit (EXIT_FAILURE);
1205 } 1569 }
1206 1570
1207 stack_start = cctx->sptr; 1571 stack_start = cctx->sptr;
1208 stack_size = cctx->ssize; 1572 stack_size = cctx->ssize;
1209 } 1573 }
1574 #endif
1210 1575
1211 #if CORO_USE_VALGRIND 1576 #if CORO_USE_VALGRIND
1212 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); 1577 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1213 #endif 1578 #endif
1214 1579
… …
1221cctx_destroy (coro_cctx *cctx) 1586cctx_destroy (coro_cctx *cctx)
1222{ 1587{
1223 if (!cctx) 1588 if (!cctx)
1224 return; 1589 return;
1225 1590
1591 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1592
1226 --cctx_count; 1593 --cctx_count;
1227 coro_destroy (&cctx->cctx); 1594 coro_destroy (&cctx->cctx);
1228 1595
1229 /* coro_transfer creates new, empty cctx's */ 1596 /* coro_transfer creates new, empty cctx's */
1230 if (cctx->sptr) 1597 if (cctx->sptr)
1231 { 1598 {
1232 #if CORO_USE_VALGRIND 1599 #if CORO_USE_VALGRIND
1233 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1600 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1234 #endif 1601 #endif
1235 1602
1236#if HAVE_MMAP 1603 #if HAVE_MMAP
1237 if (cctx->flags & CC_MAPPED) 1604 if (cctx->flags & CC_MAPPED)
1238 munmap (cctx->sptr, cctx->ssize); 1605 munmap (cctx->sptr, cctx->ssize);
1239 else 1606 else
1240#endif 1607 #endif
1241 Safefree (cctx->sptr); 1608 Safefree (cctx->sptr);
1242 } 1609 }
1243 1610
1244 Safefree (cctx); 1611 Safefree (cctx);
1245} 1612}
1246 1613
… …
1248#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1615#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1249 1616
1250static coro_cctx * 1617static coro_cctx *
1251cctx_get (pTHX) 1618cctx_get (pTHX)
1252{ 1619{
1253 while (expect_true (cctx_first)) 1620 while (ecb_expect_true (cctx_first))
1254 { 1621 {
1255 coro_cctx *cctx = cctx_first; 1622 coro_cctx *cctx = cctx_first;
1256 cctx_first = cctx->next; 1623 cctx_first = cctx->next;
1257 --cctx_idle; 1624 --cctx_idle;
1258 1625
1259 if (expect_true (!CCTX_EXPIRED (cctx))) 1626 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1260 return cctx; 1627 return cctx;
1261 1628
1262 cctx_destroy (cctx); 1629 cctx_destroy (cctx);
1263 } 1630 }
1264 1631
… …
1269cctx_put (coro_cctx *cctx) 1636cctx_put (coro_cctx *cctx)
1270{ 1637{
1271 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1638 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1272 1639
1273 /* free another cctx if overlimit */ 1640 /* free another cctx if overlimit */
1274 if (expect_false (cctx_idle >= cctx_max_idle)) 1641 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1275 { 1642 {
1276 coro_cctx *first = cctx_first; 1643 coro_cctx *first = cctx_first;
1277 cctx_first = first->next; 1644 cctx_first = first->next;
1278 --cctx_idle; 1645 --cctx_idle;
1279 1646
… …
1290static void 1657static void
1291transfer_check (pTHX_ struct coro *prev, struct coro *next) 1658transfer_check (pTHX_ struct coro *prev, struct coro *next)
1292{ 1659{
1293 /* TODO: throwing up here is considered harmful */ 1660 /* TODO: throwing up here is considered harmful */
1294 1661
1295 if (expect_true (prev != next)) 1662 if (ecb_expect_true (prev != next))
1296 { 1663 {
1297 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1664 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1298 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1665 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1299 1666
1300 if (expect_false (next->flags & CF_RUNNING)) 1667 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1301 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1302
1303 if (expect_false (next->flags & CF_DESTROYED))
1304 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1668 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1305 1669
1306#if !PERL_VERSION_ATLEAST (5,10,0) 1670#if !PERL_VERSION_ATLEAST (5,10,0)
1307 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1671 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1308 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1672 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1309#endif 1673#endif
1310 } 1674 }
1311} 1675}
1312 1676
1313/* always use the TRANSFER macro */ 1677/* always use the TRANSFER macro */
1314static void NOINLINE /* noinline so we have a fixed stackframe */ 1678static void ecb_noinline /* noinline so we have a fixed stackframe */
1315transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1679transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1316{ 1680{
1317 dSTACKLEVEL; 1681 dSTACKLEVEL;
1318 1682
1319 /* sometimes transfer is only called to set idle_sp */ 1683 /* sometimes transfer is only called to set idle_sp */
1320 if (expect_false (!next)) 1684 if (ecb_expect_false (!prev))
1321 { 1685 {
1322 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1686 cctx_current->idle_sp = STACKLEVEL;
1323 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1687 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1324 } 1688 }
1325 else if (expect_true (prev != next)) 1689 else if (ecb_expect_true (prev != next))
1326 { 1690 {
1327 coro_cctx *prev__cctx; 1691 coro_cctx *cctx_prev;
1328 1692
1329 if (expect_false (prev->flags & CF_NEW)) 1693 if (ecb_expect_false (prev->flags & CF_NEW))
1330 { 1694 {
1331 /* create a new empty/source context */ 1695 /* create a new empty/source context */
1332 prev->cctx = cctx_new_empty ();
1333 prev->flags &= ~CF_NEW; 1696 prev->flags &= ~CF_NEW;
1334 prev->flags |= CF_RUNNING; 1697 prev->flags |= CF_RUNNING;
1335 } 1698 }
1336 1699
1337 prev->flags &= ~CF_RUNNING; 1700 prev->flags &= ~CF_RUNNING;
1338 next->flags |= CF_RUNNING; 1701 next->flags |= CF_RUNNING;
1339 1702
1340 /* first get rid of the old state */ 1703 /* first get rid of the old state */
1341 save_perl (aTHX_ prev); 1704 save_perl (aTHX_ prev);
1342 1705
1343 if (expect_false (next->flags & CF_NEW)) 1706 if (ecb_expect_false (next->flags & CF_NEW))
1344 { 1707 {
1345 /* need to start coroutine */ 1708 /* need to start coroutine */
1346 next->flags &= ~CF_NEW; 1709 next->flags &= ~CF_NEW;
1347 /* setup coroutine call */ 1710 /* setup coroutine call */
1348 coro_setup (aTHX_ next); 1711 init_perl (aTHX_ next);
1349 } 1712 }
1350 else 1713 else
1351 load_perl (aTHX_ next); 1714 load_perl (aTHX_ next);
1352 1715
1353 prev__cctx = prev->cctx;
1354
1355 /* possibly untie and reuse the cctx */ 1716 /* possibly untie and reuse the cctx */
1356 if (expect_true ( 1717 if (ecb_expect_true (
1357 prev__cctx->idle_sp == (void *)stacklevel 1718 cctx_current->idle_sp == STACKLEVEL
1358 && !(prev__cctx->flags & CC_TRACE) 1719 && !(cctx_current->flags & CC_TRACE)
1359 && !force_cctx 1720 && !force_cctx
1360 )) 1721 ))
1361 { 1722 {
1362 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1723 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1363 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1724 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1364 1725
1365 prev->cctx = 0;
1366
1367 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1726 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1368 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1727 /* without this the next cctx_get might destroy the running cctx while still in use */
1369 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1728 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1370 if (!next->cctx) 1729 if (ecb_expect_true (!next->cctx))
1371 next->cctx = cctx_get (aTHX); 1730 next->cctx = cctx_get (aTHX);
1372 1731
1373 cctx_put (prev__cctx); 1732 cctx_put (cctx_current);
1374 } 1733 }
1734 else
1735 prev->cctx = cctx_current;
1375 1736
1376 ++next->usecount; 1737 ++next->usecount;
1377 1738
1378 if (expect_true (!next->cctx)) 1739 cctx_prev = cctx_current;
1379 next->cctx = cctx_get (aTHX); 1740 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1380 1741
1381 if (expect_false (prev__cctx != next->cctx)) 1742 next->cctx = 0;
1743
1744 if (ecb_expect_false (cctx_prev != cctx_current))
1382 { 1745 {
1383 prev__cctx->top_env = PL_top_env; 1746 cctx_prev->top_env = PL_top_env;
1384 PL_top_env = next->cctx->top_env; 1747 PL_top_env = cctx_current->top_env;
1385 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1748 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1386 } 1749 }
1387 1750
1388 transfer_tail (aTHX); 1751 transfer_tail (aTHX);
1389 } 1752 }
1390} 1753}
… …
1392#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1755#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1393#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1756#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1394 1757
1395/** high level stuff ********************************************************/ 1758/** high level stuff ********************************************************/
1396 1759
1760/* this function is actually Coro, not Coro::State, but we call it from here */
1761/* because it is convenient - but it hasn't been declared yet for that reason */
1397static int 1762static void
1763coro_call_on_destroy (pTHX_ struct coro *coro);
1764
1765static void
1398coro_state_destroy (pTHX_ struct coro *coro) 1766coro_state_destroy (pTHX_ struct coro *coro)
1399{ 1767{
1400 if (coro->flags & CF_DESTROYED) 1768 if (coro->flags & CF_ZOMBIE)
1401 return 0; 1769 return;
1402 1770
1403 if (coro->on_destroy)
1404 coro->on_destroy (aTHX_ coro); 1771 slf_destroy (aTHX_ coro);
1405 1772
1406 coro->flags |= CF_DESTROYED; 1773 coro->flags |= CF_ZOMBIE;
1407 1774
1408 if (coro->flags & CF_READY) 1775 if (coro->flags & CF_READY)
1409 { 1776 {
1410 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1777 /* reduce nready, as destroying a ready coro effectively unreadies it */
1411 /* alternative: look through all ready queues and remove the coro */ 1778 /* alternative: look through all ready queues and remove the coro */
1412 --coro_nready; 1779 --coro_nready;
1413 } 1780 }
1414 else 1781 else
1415 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1782 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1416 1783
1417 if (coro->mainstack && coro->mainstack != main_mainstack)
1418 {
1419 struct coro temp;
1420
1421 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1422
1423 save_perl (aTHX_ &temp);
1424 load_perl (aTHX_ coro);
1425
1426 coro_destruct (aTHX_ coro);
1427
1428 load_perl (aTHX_ &temp);
1429
1430 coro->slot = 0;
1431 }
1432
1433 cctx_destroy (coro->cctx);
1434 SvREFCNT_dec (coro->args);
1435
1436 if (coro->next) coro->next->prev = coro->prev; 1784 if (coro->next) coro->next->prev = coro->prev;
1437 if (coro->prev) coro->prev->next = coro->next; 1785 if (coro->prev) coro->prev->next = coro->next;
1438 if (coro == coro_first) coro_first = coro->next; 1786 if (coro == coro_first) coro_first = coro->next;
1439 1787
1440 return 1; 1788 if (coro->mainstack
1789 && coro->mainstack != main_mainstack
1790 && coro->slot
1791 && !PL_dirty)
1792 destroy_perl (aTHX_ coro);
1793
1794 cctx_destroy (coro->cctx);
1795 SvREFCNT_dec (coro->startcv);
1796 SvREFCNT_dec (coro->args);
1797 SvREFCNT_dec (coro->swap_sv);
1798 SvREFCNT_dec (CORO_THROW);
1799
1800 coro_call_on_destroy (aTHX_ coro);
1801
1802 /* more destruction mayhem in coro_state_free */
1441} 1803}
1442 1804
1443static int 1805static int
1444coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1806coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1445{ 1807{
1446 struct coro *coro = (struct coro *)mg->mg_ptr; 1808 struct coro *coro = (struct coro *)mg->mg_ptr;
1447 mg->mg_ptr = 0; 1809 mg->mg_ptr = 0;
1448 1810
1449 coro->hv = 0;
1450
1451 if (--coro->refcnt < 0)
1452 {
1453 coro_state_destroy (aTHX_ coro); 1811 coro_state_destroy (aTHX_ coro);
1812 SvREFCNT_dec (coro->on_destroy);
1813 SvREFCNT_dec (coro->status);
1814
1454 Safefree (coro); 1815 Safefree (coro);
1455 }
1456 1816
1457 return 0; 1817 return 0;
1458} 1818}
1459 1819
1460static int 1820static int ecb_cold
1461coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1821coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1462{ 1822{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1823 /* called when perl clones the current process the slow way (windows process emulation) */
1464 1824 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1465 ++coro->refcnt; 1825 mg->mg_ptr = 0;
1826 mg->mg_virtual = 0;
1466 1827
1467 return 0; 1828 return 0;
1468} 1829}
1469 1830
1470static MGVTBL coro_state_vtbl = { 1831static MGVTBL coro_state_vtbl = {
… …
1495 TRANSFER (ta, 1); 1856 TRANSFER (ta, 1);
1496} 1857}
1497 1858
1498/** Coro ********************************************************************/ 1859/** Coro ********************************************************************/
1499 1860
1500INLINE void 1861ecb_inline void
1501coro_enq (pTHX_ struct coro *coro) 1862coro_enq (pTHX_ struct coro *coro)
1502{ 1863{
1503 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1864 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1504}
1505 1865
1506INLINE SV * 1866 SvREFCNT_inc_NN (coro->hv);
1867
1868 coro->next_ready = 0;
1869 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1870 ready [1] = coro;
1871}
1872
1873ecb_inline struct coro *
1507coro_deq (pTHX) 1874coro_deq (pTHX)
1508{ 1875{
1509 int prio; 1876 int prio;
1510 1877
1511 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1878 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1512 if (AvFILLp (coro_ready [prio]) >= 0) 1879 {
1513 return av_shift (coro_ready [prio]); 1880 struct coro **ready = coro_ready [prio];
1881
1882 if (ready [0])
1883 {
1884 struct coro *coro = ready [0];
1885 ready [0] = coro->next_ready;
1886 return coro;
1887 }
1888 }
1514 1889
1515 return 0; 1890 return 0;
1891}
1892
1893static void
1894invoke_sv_ready_hook_helper (void)
1895{
1896 dTHX;
1897 dSP;
1898
1899 ENTER;
1900 SAVETMPS;
1901
1902 PUSHMARK (SP);
1903 PUTBACK;
1904 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1905
1906 FREETMPS;
1907 LEAVE;
1516} 1908}
1517 1909
1518static int 1910static int
1519api_ready (pTHX_ SV *coro_sv) 1911api_ready (pTHX_ SV *coro_sv)
1520{ 1912{
1521 struct coro *coro;
1522 SV *sv_hook;
1523 void (*xs_hook)(void);
1524
1525 if (SvROK (coro_sv))
1526 coro_sv = SvRV (coro_sv);
1527
1528 coro = SvSTATE (coro_sv); 1913 struct coro *coro = SvSTATE (coro_sv);
1529 1914
1530 if (coro->flags & CF_READY) 1915 if (coro->flags & CF_READY)
1531 return 0; 1916 return 0;
1532 1917
1533 coro->flags |= CF_READY; 1918 coro->flags |= CF_READY;
1534 1919
1535 sv_hook = coro_nready ? 0 : coro_readyhook;
1536 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1537
1538 coro_enq (aTHX_ coro); 1920 coro_enq (aTHX_ coro);
1539 ++coro_nready;
1540 1921
1541 if (sv_hook) 1922 if (!coro_nready++)
1542 { 1923 if (coroapi.readyhook)
1543 dSP; 1924 coroapi.readyhook ();
1544
1545 ENTER;
1546 SAVETMPS;
1547
1548 PUSHMARK (SP);
1549 PUTBACK;
1550 call_sv (sv_hook, G_VOID | G_DISCARD);
1551
1552 FREETMPS;
1553 LEAVE;
1554 }
1555
1556 if (xs_hook)
1557 xs_hook ();
1558 1925
1559 return 1; 1926 return 1;
1560} 1927}
1561 1928
1562static int 1929static int
1563api_is_ready (pTHX_ SV *coro_sv) 1930api_is_ready (pTHX_ SV *coro_sv)
1564{ 1931{
1565 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1932 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1566} 1933}
1567 1934
1568INLINE void 1935/* expects to own a reference to next->hv */
1936ecb_inline void
1569prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1937prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1570{ 1938{
1571 SV *prev_sv, *next_sv;
1572
1573 for (;;)
1574 {
1575 next_sv = coro_deq (aTHX);
1576
1577 /* nothing to schedule: call the idle handler */
1578 if (expect_false (!next_sv))
1579 {
1580 dSP;
1581
1582 ENTER;
1583 SAVETMPS;
1584
1585 PUSHMARK (SP);
1586 PUTBACK;
1587 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1588
1589 FREETMPS;
1590 LEAVE;
1591 continue;
1592 }
1593
1594 ta->next = SvSTATE_hv (next_sv);
1595
1596 /* cannot transfer to destroyed coros, skip and look for next */
1597 if (expect_false (ta->next->flags & CF_DESTROYED))
1598 {
1599 SvREFCNT_dec (next_sv);
1600 /* coro_nready has already been taken care of by destroy */
1601 continue;
1602 }
1603
1604 --coro_nready;
1605 break;
1606 }
1607
1608 /* free this only after the transfer */
1609 prev_sv = SvRV (coro_current); 1939 SV *prev_sv = SvRV (coro_current);
1940
1610 ta->prev = SvSTATE_hv (prev_sv); 1941 ta->prev = SvSTATE_hv (prev_sv);
1942 ta->next = next;
1943
1611 TRANSFER_CHECK (*ta); 1944 TRANSFER_CHECK (*ta);
1612 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1945
1613 ta->next->flags &= ~CF_READY;
1614 SvRV_set (coro_current, next_sv); 1946 SvRV_set (coro_current, (SV *)next->hv);
1615 1947
1616 free_coro_mortal (aTHX); 1948 free_coro_mortal (aTHX);
1617 coro_mortal = prev_sv; 1949 coro_mortal = prev_sv;
1618} 1950}
1619 1951
1620INLINE void 1952static void
1953prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1954{
1955 for (;;)
1956 {
1957 struct coro *next = coro_deq (aTHX);
1958
1959 if (ecb_expect_true (next))
1960 {
1961 /* cannot transfer to destroyed coros, skip and look for next */
1962 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1963 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1964 else
1965 {
1966 next->flags &= ~CF_READY;
1967 --coro_nready;
1968
1969 prepare_schedule_to (aTHX_ ta, next);
1970 break;
1971 }
1972 }
1973 else
1974 {
1975 /* nothing to schedule: call the idle handler */
1976 if (SvROK (sv_idle)
1977 && SvOBJECT (SvRV (sv_idle)))
1978 {
1979 if (SvRV (sv_idle) == SvRV (coro_current))
1980 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1981
1982 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1983 api_ready (aTHX_ SvRV (sv_idle));
1984 --coro_nready;
1985 }
1986 else
1987 {
1988 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1989 dSP;
1990
1991 ENTER;
1992 SAVETMPS;
1993
1994 PUSHMARK (SP);
1995 PUTBACK;
1996 call_sv (sv_idle, G_VOID | G_DISCARD);
1997
1998 FREETMPS;
1999 LEAVE;
2000 }
2001 }
2002 }
2003}
2004
2005ecb_inline void
1621prepare_cede (pTHX_ struct coro_transfer_args *ta) 2006prepare_cede (pTHX_ struct coro_transfer_args *ta)
1622{ 2007{
1623 api_ready (aTHX_ coro_current); 2008 api_ready (aTHX_ coro_current);
1624 prepare_schedule (aTHX_ ta); 2009 prepare_schedule (aTHX_ ta);
1625} 2010}
1626 2011
1627INLINE void 2012ecb_inline void
1628prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2013prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1629{ 2014{
1630 SV *prev = SvRV (coro_current); 2015 SV *prev = SvRV (coro_current);
1631 2016
1632 if (coro_nready) 2017 if (coro_nready)
… …
1645 2030
1646 prepare_schedule (aTHX_ &ta); 2031 prepare_schedule (aTHX_ &ta);
1647 TRANSFER (ta, 1); 2032 TRANSFER (ta, 1);
1648} 2033}
1649 2034
2035static void
2036api_schedule_to (pTHX_ SV *coro_sv)
2037{
2038 struct coro_transfer_args ta;
2039 struct coro *next = SvSTATE (coro_sv);
2040
2041 SvREFCNT_inc_NN (coro_sv);
2042 prepare_schedule_to (aTHX_ &ta, next);
2043}
2044
1650static int 2045static int
1651api_cede (pTHX) 2046api_cede (pTHX)
1652{ 2047{
1653 struct coro_transfer_args ta; 2048 struct coro_transfer_args ta;
1654 2049
1655 prepare_cede (aTHX_ &ta); 2050 prepare_cede (aTHX_ &ta);
1656 2051
1657 if (expect_true (ta.prev != ta.next)) 2052 if (ecb_expect_true (ta.prev != ta.next))
1658 { 2053 {
1659 TRANSFER (ta, 1); 2054 TRANSFER (ta, 1);
1660 return 1; 2055 return 1;
1661 } 2056 }
1662 else 2057 else
… …
1681static void 2076static void
1682api_trace (pTHX_ SV *coro_sv, int flags) 2077api_trace (pTHX_ SV *coro_sv, int flags)
1683{ 2078{
1684 struct coro *coro = SvSTATE (coro_sv); 2079 struct coro *coro = SvSTATE (coro_sv);
1685 2080
2081 if (coro->flags & CF_RUNNING)
2082 croak ("cannot enable tracing on a running coroutine, caught");
2083
1686 if (flags & CC_TRACE) 2084 if (flags & CC_TRACE)
1687 { 2085 {
1688 if (!coro->cctx) 2086 if (!coro->cctx)
1689 coro->cctx = cctx_new_run (); 2087 coro->cctx = cctx_new_run ();
1690 else if (!(coro->cctx->flags & CC_TRACE)) 2088 else if (!(coro->cctx->flags & CC_TRACE))
1691 croak ("cannot enable tracing on coroutine with custom stack,"); 2089 croak ("cannot enable tracing on coroutine with custom stack, caught");
1692 2090
1693 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2091 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1694 } 2092 }
1695 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2093 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1696 { 2094 {
… …
1699 if (coro->flags & CF_RUNNING) 2097 if (coro->flags & CF_RUNNING)
1700 PL_runops = RUNOPS_DEFAULT; 2098 PL_runops = RUNOPS_DEFAULT;
1701 else 2099 else
1702 coro->slot->runops = RUNOPS_DEFAULT; 2100 coro->slot->runops = RUNOPS_DEFAULT;
1703 } 2101 }
2102}
2103
2104static void
2105coro_push_av (pTHX_ AV *av, I32 gimme_v)
2106{
2107 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2108 {
2109 dSP;
2110
2111 if (gimme_v == G_SCALAR)
2112 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2113 else
2114 {
2115 int i;
2116 EXTEND (SP, AvFILLp (av) + 1);
2117
2118 for (i = 0; i <= AvFILLp (av); ++i)
2119 PUSHs (AvARRAY (av)[i]);
2120 }
2121
2122 PUTBACK;
2123 }
2124}
2125
2126static void
2127coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2128{
2129 if (!coro->on_destroy)
2130 coro->on_destroy = newAV ();
2131
2132 av_push (coro->on_destroy, cb);
2133}
2134
2135static void
2136slf_destroy_join (pTHX_ struct CoroSLF *frame)
2137{
2138 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2139}
2140
2141static int
2142slf_check_join (pTHX_ struct CoroSLF *frame)
2143{
2144 struct coro *coro = (struct coro *)frame->data;
2145
2146 if (!coro->status)
2147 return 1;
2148
2149 frame->destroy = 0;
2150
2151 coro_push_av (aTHX_ coro->status, GIMME_V);
2152
2153 SvREFCNT_dec ((SV *)coro->hv);
2154
2155 return 0;
2156}
2157
2158static void
2159slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2160{
2161 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2162
2163 if (items > 1)
2164 croak ("join called with too many arguments");
2165
2166 if (coro->status)
2167 frame->prepare = prepare_nop;
2168 else
2169 {
2170 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2171 frame->prepare = prepare_schedule;
2172 }
2173
2174 frame->check = slf_check_join;
2175 frame->destroy = slf_destroy_join;
2176 frame->data = (void *)coro;
2177 SvREFCNT_inc (coro->hv);
2178}
2179
2180static void
2181coro_call_on_destroy (pTHX_ struct coro *coro)
2182{
2183 AV *od = coro->on_destroy;
2184
2185 if (!od)
2186 return;
2187
2188 while (AvFILLp (od) >= 0)
2189 {
2190 SV *cb = sv_2mortal (av_pop (od));
2191
2192 /* coro hv's (and only hv's at the moment) are supported as well */
2193 if (SvSTATEhv_p (aTHX_ cb))
2194 api_ready (aTHX_ cb);
2195 else
2196 {
2197 dSP; /* don't disturb outer sp */
2198 PUSHMARK (SP);
2199
2200 if (coro->status)
2201 {
2202 PUTBACK;
2203 coro_push_av (aTHX_ coro->status, G_ARRAY);
2204 SPAGAIN;
2205 }
2206
2207 PUTBACK;
2208 call_sv (cb, G_VOID | G_DISCARD);
2209 }
2210 }
2211}
2212
2213static void
2214coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2215{
2216 AV *av;
2217
2218 if (coro->status)
2219 {
2220 av = coro->status;
2221 av_clear (av);
2222 }
2223 else
2224 av = coro->status = newAV ();
2225
2226 /* items are actually not so common, so optimise for this case */
2227 if (items)
2228 {
2229 int i;
2230
2231 av_extend (av, items - 1);
2232
2233 for (i = 0; i < items; ++i)
2234 av_push (av, SvREFCNT_inc_NN (arg [i]));
2235 }
2236}
2237
2238static void
2239slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2240{
2241 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2242 api_ready (aTHX_ sv_manager);
2243
2244 frame->prepare = prepare_schedule;
2245 frame->check = slf_check_repeat;
2246
2247 /* as a minor optimisation, we could unwind all stacks here */
2248 /* but that puts extra pressure on pp_slf, and is not worth much */
2249 /*coro_unwind_stacks (aTHX);*/
2250}
2251
2252static void
2253slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2254{
2255 HV *coro_hv = (HV *)SvRV (coro_current);
2256
2257 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2258 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2259}
2260
2261static void
2262slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2263{
2264 HV *coro_hv;
2265 struct coro *coro;
2266
2267 if (items <= 0)
2268 croak ("Coro::cancel called without coro object,");
2269
2270 coro = SvSTATE (arg [0]);
2271 coro_hv = coro->hv;
2272
2273 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2274
2275 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2276 {
2277 /* coro currently busy cancelling something, so just notify it */
2278 coro->slf_frame.data = (void *)coro;
2279
2280 frame->prepare = prepare_nop;
2281 frame->check = slf_check_nop;
2282 }
2283 else if (coro_hv == (HV *)SvRV (coro_current))
2284 {
2285 /* cancelling the current coro is allowed, and equals terminate */
2286 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2287 }
2288 else
2289 {
2290 struct coro *self = SvSTATE_current;
2291
2292 /* otherwise we cancel directly, purely for speed reasons
2293 * unfortunately, this requires some magic trickery, as
2294 * somebody else could cancel us, so we have to fight the cancellation.
2295 * this is ugly, and hopefully fully worth the extra speed.
2296 * besides, I can't get the slow-but-safe version working...
2297 */
2298 slf_frame.data = 0;
2299 self->flags |= CF_NOCANCEL;
2300 coro_state_destroy (aTHX_ coro);
2301 self->flags &= ~CF_NOCANCEL;
2302
2303 if (slf_frame.data)
2304 {
2305 /* while we were busy we have been cancelled, so terminate */
2306 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2307 }
2308 else
2309 {
2310 frame->prepare = prepare_nop;
2311 frame->check = slf_check_nop;
2312 }
2313 }
2314}
2315
2316static int
2317slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2318{
2319 frame->prepare = 0;
2320 coro_unwind_stacks (aTHX);
2321
2322 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2323
2324 return 1;
2325}
2326
2327static int
2328safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2329{
2330 if (coro->cctx)
2331 croak ("coro inside C callback, unable to cancel at this time, caught");
2332
2333 if (coro->flags & CF_NEW)
2334 {
2335 coro_set_status (aTHX_ coro, arg, items);
2336 coro_state_destroy (aTHX_ coro);
2337 }
2338 else
2339 {
2340 if (!coro->slf_frame.prepare)
2341 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2342
2343 slf_destroy (aTHX_ coro);
2344
2345 coro_set_status (aTHX_ coro, arg, items);
2346 coro->slf_frame.prepare = prepare_nop;
2347 coro->slf_frame.check = slf_check_safe_cancel;
2348
2349 api_ready (aTHX_ (SV *)coro->hv);
2350 }
2351
2352 return 1;
2353}
2354
2355/*****************************************************************************/
2356/* async pool handler */
2357
2358static int
2359slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2360{
2361 HV *hv = (HV *)SvRV (coro_current);
2362 struct coro *coro = (struct coro *)frame->data;
2363
2364 if (!coro->invoke_cb)
2365 return 1; /* loop till we have invoke */
2366 else
2367 {
2368 hv_store (hv, "desc", sizeof ("desc") - 1,
2369 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2370
2371 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2372
2373 {
2374 dSP;
2375 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2376 PUTBACK;
2377 }
2378
2379 SvREFCNT_dec (GvAV (PL_defgv));
2380 GvAV (PL_defgv) = coro->invoke_av;
2381 coro->invoke_av = 0;
2382
2383 return 0;
2384 }
2385}
2386
2387static void
2388slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2389{
2390 HV *hv = (HV *)SvRV (coro_current);
2391 struct coro *coro = SvSTATE_hv ((SV *)hv);
2392
2393 if (ecb_expect_true (coro->saved_deffh))
2394 {
2395 /* subsequent iteration */
2396 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2397 coro->saved_deffh = 0;
2398
2399 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2400 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2401 {
2402 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2403 return;
2404 }
2405 else
2406 {
2407 av_clear (GvAV (PL_defgv));
2408 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2409
2410 coro->prio = 0;
2411
2412 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2413 api_trace (aTHX_ coro_current, 0);
2414
2415 frame->prepare = prepare_schedule;
2416 av_push (av_async_pool, SvREFCNT_inc (hv));
2417 }
2418 }
2419 else
2420 {
2421 /* first iteration, simply fall through */
2422 frame->prepare = prepare_nop;
2423 }
2424
2425 frame->check = slf_check_pool_handler;
2426 frame->data = (void *)coro;
2427}
2428
2429/*****************************************************************************/
2430/* rouse callback */
2431
2432#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2433
2434static void
2435coro_rouse_callback (pTHX_ CV *cv)
2436{
2437 dXSARGS;
2438 SV *data = (SV *)S_GENSUB_ARG;
2439
2440 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2441 {
2442 /* first call, set args */
2443 SV *coro = SvRV (data);
2444 AV *av = newAV ();
2445
2446 SvRV_set (data, (SV *)av);
2447
2448 /* better take a full copy of the arguments */
2449 while (items--)
2450 av_store (av, items, newSVsv (ST (items)));
2451
2452 api_ready (aTHX_ coro);
2453 SvREFCNT_dec (coro);
2454 }
2455
2456 XSRETURN_EMPTY;
2457}
2458
2459static int
2460slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2461{
2462 SV *data = (SV *)frame->data;
2463
2464 if (CORO_THROW)
2465 return 0;
2466
2467 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2468 return 1;
2469
2470 /* now push all results on the stack */
2471 {
2472 dSP;
2473 AV *av = (AV *)SvRV (data);
2474 int i;
2475
2476 EXTEND (SP, AvFILLp (av) + 1);
2477 for (i = 0; i <= AvFILLp (av); ++i)
2478 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2479
2480 /* we have stolen the elements, so set length to zero and free */
2481 AvFILLp (av) = -1;
2482 av_undef (av);
2483
2484 PUTBACK;
2485 }
2486
2487 return 0;
2488}
2489
2490static void
2491slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2492{
2493 SV *cb;
2494
2495 if (items)
2496 cb = arg [0];
2497 else
2498 {
2499 struct coro *coro = SvSTATE_current;
2500
2501 if (!coro->rouse_cb)
2502 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2503
2504 cb = sv_2mortal (coro->rouse_cb);
2505 coro->rouse_cb = 0;
2506 }
2507
2508 if (!SvROK (cb)
2509 || SvTYPE (SvRV (cb)) != SVt_PVCV
2510 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2511 croak ("Coro::rouse_wait called with illegal callback argument,");
2512
2513 {
2514 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2515 SV *data = (SV *)S_GENSUB_ARG;
2516
2517 frame->data = (void *)data;
2518 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2519 frame->check = slf_check_rouse_wait;
2520 }
2521}
2522
2523static SV *
2524coro_new_rouse_cb (pTHX)
2525{
2526 HV *hv = (HV *)SvRV (coro_current);
2527 struct coro *coro = SvSTATE_hv (hv);
2528 SV *data = newRV_inc ((SV *)hv);
2529 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2530
2531 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2532 SvREFCNT_dec (data); /* magicext increases the refcount */
2533
2534 SvREFCNT_dec (coro->rouse_cb);
2535 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2536
2537 return cb;
1704} 2538}
1705 2539
1706/*****************************************************************************/ 2540/*****************************************************************************/
1707/* schedule-like-function opcode (SLF) */ 2541/* schedule-like-function opcode (SLF) */
1708 2542
… …
1758 frame->prepare = prepare_schedule; 2592 frame->prepare = prepare_schedule;
1759 frame->check = slf_check_nop; 2593 frame->check = slf_check_nop;
1760} 2594}
1761 2595
1762static void 2596static void
2597slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2598{
2599 struct coro *next = (struct coro *)slf_frame.data;
2600
2601 SvREFCNT_inc_NN (next->hv);
2602 prepare_schedule_to (aTHX_ ta, next);
2603}
2604
2605static void
2606slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2607{
2608 if (!items)
2609 croak ("Coro::schedule_to expects a coroutine argument, caught");
2610
2611 frame->data = (void *)SvSTATE (arg [0]);
2612 frame->prepare = slf_prepare_schedule_to;
2613 frame->check = slf_check_nop;
2614}
2615
2616static void
2617slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2618{
2619 api_ready (aTHX_ SvRV (coro_current));
2620
2621 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2622}
2623
2624static void
1763slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2625slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1764{ 2626{
1765 frame->prepare = prepare_cede; 2627 frame->prepare = prepare_cede;
1766 frame->check = slf_check_nop; 2628 frame->check = slf_check_nop;
1767} 2629}
… …
1769static void 2631static void
1770slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2632slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1771{ 2633{
1772 frame->prepare = prepare_cede_notself; 2634 frame->prepare = prepare_cede_notself;
1773 frame->check = slf_check_nop; 2635 frame->check = slf_check_nop;
2636}
2637
2638/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2639static void
2640slf_destroy (pTHX_ struct coro *coro)
2641{
2642 /* this callback is reserved for slf functions needing to do cleanup */
2643 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2644 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2645
2646 /*
2647 * The on_destroy above most likely is from an SLF call.
2648 * Since by definition the SLF call will not finish when we destroy
2649 * the coro, we will have to force-finish it here, otherwise
2650 * cleanup functions cannot call SLF functions.
2651 */
2652 coro->slf_frame.prepare = 0;
1774} 2653}
1775 2654
1776/* 2655/*
1777 * these not obviously related functions are all rolled into one 2656 * these not obviously related functions are all rolled into one
1778 * function to increase chances that they all will call transfer with the same 2657 * function to increase chances that they all will call transfer with the same
… …
1785 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2664 I32 checkmark; /* mark SP to see how many elements check has pushed */
1786 2665
1787 /* set up the slf frame, unless it has already been set-up */ 2666 /* set up the slf frame, unless it has already been set-up */
1788 /* the latter happens when a new coro has been started */ 2667 /* the latter happens when a new coro has been started */
1789 /* or when a new cctx was attached to an existing coroutine */ 2668 /* or when a new cctx was attached to an existing coroutine */
1790 if (expect_true (!slf_frame.prepare)) 2669 if (ecb_expect_true (!slf_frame.prepare))
1791 { 2670 {
1792 /* first iteration */ 2671 /* first iteration */
1793 dSP; 2672 dSP;
1794 SV **arg = PL_stack_base + TOPMARK + 1; 2673 SV **arg = PL_stack_base + TOPMARK + 1;
1795 int items = SP - arg; /* args without function object */ 2674 int items = SP - arg; /* args without function object */
… …
1835 } 2714 }
1836 while (slf_frame.check (aTHX_ &slf_frame)); 2715 while (slf_frame.check (aTHX_ &slf_frame));
1837 2716
1838 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2717 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1839 2718
2719 /* exception handling */
2720 if (ecb_expect_false (CORO_THROW))
2721 {
2722 SV *exception = sv_2mortal (CORO_THROW);
2723
2724 CORO_THROW = 0;
2725 sv_setsv (ERRSV, exception);
2726 croak (0);
2727 }
2728
1840 /* return value handling - mostly like entersub */ 2729 /* return value handling - mostly like entersub */
1841 /* make sure we put something on the stack in scalar context */ 2730 /* make sure we put something on the stack in scalar context */
1842 if (GIMME_V == G_SCALAR) 2731 if (GIMME_V == G_SCALAR
2732 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1843 { 2733 {
1844 dSP; 2734 dSP;
1845 SV **bot = PL_stack_base + checkmark; 2735 SV **bot = PL_stack_base + checkmark;
1846 2736
1847 if (sp == bot) /* too few, push undef */ 2737 if (sp == bot) /* too few, push undef */
1848 bot [1] = &PL_sv_undef; 2738 bot [1] = &PL_sv_undef;
1849 else if (sp != bot + 1) /* too many, take last one */ 2739 else /* too many, take last one */
1850 bot [1] = *sp; 2740 bot [1] = *sp;
1851 2741
1852 SP = bot + 1; 2742 SP = bot + 1;
1853 2743
1854 PUTBACK; 2744 PUTBACK;
1855 }
1856
1857 /* exception handling */
1858 if (expect_false (coro_throw))
1859 {
1860 SV *exception = sv_2mortal (coro_throw);
1861
1862 coro_throw = 0;
1863 sv_setsv (ERRSV, exception);
1864 croak (0);
1865 } 2745 }
1866 2746
1867 return NORMAL; 2747 return NORMAL;
1868} 2748}
1869 2749
… …
1897 if (PL_op->op_flags & OPf_STACKED) 2777 if (PL_op->op_flags & OPf_STACKED)
1898 { 2778 {
1899 if (items > slf_arga) 2779 if (items > slf_arga)
1900 { 2780 {
1901 slf_arga = items; 2781 slf_arga = items;
1902 free (slf_argv); 2782 Safefree (slf_argv);
1903 slf_argv = malloc (slf_arga * sizeof (SV *)); 2783 New (0, slf_argv, slf_arga, SV *);
1904 } 2784 }
1905 2785
1906 slf_argc = items; 2786 slf_argc = items;
1907 2787
1908 for (i = 0; i < items; ++i) 2788 for (i = 0; i < items; ++i)
… …
1910 } 2790 }
1911 else 2791 else
1912 slf_argc = 0; 2792 slf_argc = 0;
1913 2793
1914 PL_op->op_ppaddr = pp_slf; 2794 PL_op->op_ppaddr = pp_slf;
1915 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2795 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
1916 2796
1917 PL_op = (OP *)&slf_restore; 2797 PL_op = (OP *)&slf_restore;
2798}
2799
2800/*****************************************************************************/
2801/* dynamic wind */
2802
2803static void
2804on_enterleave_call (pTHX_ SV *cb)
2805{
2806 dSP;
2807
2808 PUSHSTACK;
2809
2810 PUSHMARK (SP);
2811 PUTBACK;
2812 call_sv (cb, G_VOID | G_DISCARD);
2813 SPAGAIN;
2814
2815 POPSTACK;
2816}
2817
2818static SV *
2819coro_avp_pop_and_free (pTHX_ AV **avp)
2820{
2821 AV *av = *avp;
2822 SV *res = av_pop (av);
2823
2824 if (AvFILLp (av) < 0)
2825 {
2826 *avp = 0;
2827 SvREFCNT_dec (av);
2828 }
2829
2830 return res;
2831}
2832
2833static void
2834coro_pop_on_enter (pTHX_ void *coro)
2835{
2836 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2837 SvREFCNT_dec (cb);
2838}
2839
2840static void
2841coro_pop_on_leave (pTHX_ void *coro)
2842{
2843 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2844 on_enterleave_call (aTHX_ sv_2mortal (cb));
1918} 2845}
1919 2846
1920/*****************************************************************************/ 2847/*****************************************************************************/
1921/* PerlIO::cede */ 2848/* PerlIO::cede */
1922 2849
… …
1924{ 2851{
1925 PerlIOBuf base; 2852 PerlIOBuf base;
1926 NV next, every; 2853 NV next, every;
1927} PerlIOCede; 2854} PerlIOCede;
1928 2855
1929static IV 2856static IV ecb_cold
1930PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2857PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1931{ 2858{
1932 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2859 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1933 2860
1934 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2861 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1935 self->next = nvtime () + self->every; 2862 self->next = nvtime () + self->every;
1936 2863
1937 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2864 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1938} 2865}
1939 2866
1940static SV * 2867static SV * ecb_cold
1941PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2868PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1942{ 2869{
1943 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2870 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1944 2871
1945 return newSVnv (self->every); 2872 return newSVnv (self->every);
… …
1991 PerlIOBuf_get_cnt, 2918 PerlIOBuf_get_cnt,
1992 PerlIOBuf_set_ptrcnt, 2919 PerlIOBuf_set_ptrcnt,
1993}; 2920};
1994 2921
1995/*****************************************************************************/ 2922/*****************************************************************************/
2923/* Coro::Semaphore & Coro::Signal */
2924
2925static SV *
2926coro_waitarray_new (pTHX_ int count)
2927{
2928 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2929 AV *av = newAV ();
2930 SV **ary;
2931
2932 /* unfortunately, building manually saves memory */
2933 Newx (ary, 2, SV *);
2934 AvALLOC (av) = ary;
2935#if PERL_VERSION_ATLEAST (5,10,0)
2936 AvARRAY (av) = ary;
2937#else
2938 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2939 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2940 SvPVX ((SV *)av) = (char *)ary;
2941#endif
2942 AvMAX (av) = 1;
2943 AvFILLp (av) = 0;
2944 ary [0] = newSViv (count);
2945
2946 return newRV_noinc ((SV *)av);
2947}
2948
1996/* Coro::Semaphore */ 2949/* semaphore */
1997 2950
1998static void 2951static void
1999coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2952coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2000{ 2953{
2001 SV *count_sv = AvARRAY (av)[0]; 2954 SV *count_sv = AvARRAY (av)[0];
… …
2013 AvARRAY (av)[0] = AvARRAY (av)[1]; 2966 AvARRAY (av)[0] = AvARRAY (av)[1];
2014 AvARRAY (av)[1] = count_sv; 2967 AvARRAY (av)[1] = count_sv;
2015 cb = av_shift (av); 2968 cb = av_shift (av);
2016 2969
2017 if (SvOBJECT (cb)) 2970 if (SvOBJECT (cb))
2971 {
2018 api_ready (aTHX_ cb); 2972 api_ready (aTHX_ cb);
2019 else 2973 --count;
2020 croak ("callbacks not yet supported"); 2974 }
2975 else if (SvTYPE (cb) == SVt_PVCV)
2976 {
2977 dSP;
2978 PUSHMARK (SP);
2979 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2980 PUTBACK;
2981 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2982 }
2021 2983
2022 SvREFCNT_dec (cb); 2984 SvREFCNT_dec (cb);
2023
2024 --count;
2025 } 2985 }
2026} 2986}
2027 2987
2028static void 2988static void
2029coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2989coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2030{ 2990{
2031 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2991 /* call $sem->adjust (0) to possibly wake up some other waiters */
2032 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2992 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2033} 2993}
2034 2994
2035static int 2995static int
2036slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2996slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2037{ 2997{
2038 AV *av = (AV *)frame->data; 2998 AV *av = (AV *)frame->data;
2039 SV *count_sv = AvARRAY (av)[0]; 2999 SV *count_sv = AvARRAY (av)[0];
3000 SV *coro_hv = SvRV (coro_current);
2040 3001
3002 /* if we are about to throw, don't actually acquire the lock, just throw */
3003 if (CORO_THROW)
3004 return 0;
2041 if (SvIVX (count_sv) > 0) 3005 else if (SvIVX (count_sv) > 0)
2042 { 3006 {
2043 SvSTATE_current->on_destroy = 0; 3007 frame->destroy = 0;
3008
3009 if (acquire)
2044 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3010 SvIVX (count_sv) = SvIVX (count_sv) - 1;
3011 else
3012 coro_semaphore_adjust (aTHX_ av, 0);
3013
2045 return 0; 3014 return 0;
2046 } 3015 }
2047 else 3016 else
2048 { 3017 {
2049 int i; 3018 int i;
2050 /* if we were woken up but can't down, we look through the whole */ 3019 /* if we were woken up but can't down, we look through the whole */
2051 /* waiters list and only add us if we aren't in there already */ 3020 /* waiters list and only add us if we aren't in there already */
2052 /* this avoids some degenerate memory usage cases */ 3021 /* this avoids some degenerate memory usage cases */
2053 3022 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2054 for (i = 1; i <= AvFILLp (av); ++i)
2055 if (AvARRAY (av)[i] == SvRV (coro_current)) 3023 if (AvARRAY (av)[i] == coro_hv)
2056 return 1; 3024 return 1;
2057 3025
2058 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3026 av_push (av, SvREFCNT_inc (coro_hv));
2059 return 1; 3027 return 1;
2060 } 3028 }
2061} 3029}
2062 3030
2063static void 3031static int
3032slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
3033{
3034 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
3035}
3036
3037static int
3038slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
3039{
3040 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
3041}
3042
3043static void
2064slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3044slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2065{ 3045{
2066 AV *av = (AV *)SvRV (arg [0]); 3046 AV *av = (AV *)SvRV (arg [0]);
2067 3047
2068 if (SvIVX (AvARRAY (av)[0]) > 0) 3048 if (SvIVX (AvARRAY (av)[0]) > 0)
2069 { 3049 {
2070 frame->data = (void *)av; 3050 frame->data = (void *)av;
2071 frame->prepare = prepare_nop; 3051 frame->prepare = prepare_nop;
2072 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2073 } 3052 }
2074 else 3053 else
2075 { 3054 {
2076 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3055 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2077 3056
2078 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3057 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2079 frame->prepare = prepare_schedule; 3058 frame->prepare = prepare_schedule;
2080
2081 /* to avoid race conditions when a woken-up coro gets terminated */ 3059 /* to avoid race conditions when a woken-up coro gets terminated */
2082 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3060 /* we arrange for a temporary on_destroy that calls adjust (0) */
2083 assert (!SvSTATE_current->on_destroy);//D
2084 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3061 frame->destroy = coro_semaphore_destroy;
2085 } 3062 }
3063}
2086 3064
3065static void
3066slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3067{
3068 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2087 frame->check = slf_check_semaphore_down; 3069 frame->check = slf_check_semaphore_down;
2088
2089} 3070}
2090 3071
2091/*****************************************************************************/ 3072static void
2092/* gensub: simple closure generation utility */ 3073slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2093
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr
2095
2096/* create a closure from XS, returns a code reference */
2097/* the arg can be accessed via GENSUB_ARG from the callback */
2098/* the callback must use dXSARGS/XSRETURN */
2099static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
2101{ 3074{
2102 CV *cv = (CV *)newSV (0); 3075 if (items >= 2)
3076 {
3077 /* callback form */
3078 AV *av = (AV *)SvRV (arg [0]);
3079 SV *cb_cv = s_get_cv_croak (arg [1]);
2103 3080
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3081 av_push (av, SvREFCNT_inc_NN (cb_cv));
2105 3082
2106 CvANON_on (cv); 3083 if (SvIVX (AvARRAY (av)[0]) > 0)
2107 CvISXSUB_on (cv); 3084 coro_semaphore_adjust (aTHX_ av, 0);
2108 CvXSUB (cv) = xsub;
2109 GENSUB_ARG = arg;
2110 3085
2111 return newRV_noinc ((SV *)cv); 3086 frame->prepare = prepare_nop;
3087 frame->check = slf_check_nop;
3088 }
3089 else
3090 {
3091 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3092 frame->check = slf_check_semaphore_wait;
3093 }
3094}
3095
3096/* signal */
3097
3098static void
3099coro_signal_wake (pTHX_ AV *av, int count)
3100{
3101 SvIVX (AvARRAY (av)[0]) = 0;
3102
3103 /* now signal count waiters */
3104 while (count > 0 && AvFILLp (av) > 0)
3105 {
3106 SV *cb;
3107
3108 /* swap first two elements so we can shift a waiter */
3109 cb = AvARRAY (av)[0];
3110 AvARRAY (av)[0] = AvARRAY (av)[1];
3111 AvARRAY (av)[1] = cb;
3112
3113 cb = av_shift (av);
3114
3115 if (SvTYPE (cb) == SVt_PVCV)
3116 {
3117 dSP;
3118 PUSHMARK (SP);
3119 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3120 PUTBACK;
3121 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3122 }
3123 else
3124 {
3125 api_ready (aTHX_ cb);
3126 sv_setiv (cb, 0); /* signal waiter */
3127 }
3128
3129 SvREFCNT_dec (cb);
3130
3131 --count;
3132 }
3133}
3134
3135static int
3136slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3137{
3138 /* if we are about to throw, also stop waiting */
3139 return SvROK ((SV *)frame->data) && !CORO_THROW;
3140}
3141
3142static void
3143slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3144{
3145 AV *av = (AV *)SvRV (arg [0]);
3146
3147 if (items >= 2)
3148 {
3149 SV *cb_cv = s_get_cv_croak (arg [1]);
3150 av_push (av, SvREFCNT_inc_NN (cb_cv));
3151
3152 if (SvIVX (AvARRAY (av)[0]))
3153 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3154
3155 frame->prepare = prepare_nop;
3156 frame->check = slf_check_nop;
3157 }
3158 else if (SvIVX (AvARRAY (av)[0]))
3159 {
3160 SvIVX (AvARRAY (av)[0]) = 0;
3161 frame->prepare = prepare_nop;
3162 frame->check = slf_check_nop;
3163 }
3164 else
3165 {
3166 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3167
3168 av_push (av, waiter);
3169
3170 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3171 frame->prepare = prepare_schedule;
3172 frame->check = slf_check_signal_wait;
3173 }
2112} 3174}
2113 3175
2114/*****************************************************************************/ 3176/*****************************************************************************/
2115/* Coro::AIO */ 3177/* Coro::AIO */
2116 3178
… …
2127 3189
2128static void 3190static void
2129coro_aio_callback (pTHX_ CV *cv) 3191coro_aio_callback (pTHX_ CV *cv)
2130{ 3192{
2131 dXSARGS; 3193 dXSARGS;
2132 AV *state = (AV *)GENSUB_ARG; 3194 AV *state = (AV *)S_GENSUB_ARG;
2133 SV *coro = av_pop (state); 3195 SV *coro = av_pop (state);
2134 SV *data_sv = newSV (sizeof (struct io_state)); 3196 SV *data_sv = newSV (sizeof (struct io_state));
2135 3197
2136 av_extend (state, items); 3198 av_extend (state, items - 1);
2137 3199
2138 sv_upgrade (data_sv, SVt_PV); 3200 sv_upgrade (data_sv, SVt_PV);
2139 SvCUR_set (data_sv, sizeof (struct io_state)); 3201 SvCUR_set (data_sv, sizeof (struct io_state));
2140 SvPOK_only (data_sv); 3202 SvPOK_only (data_sv);
2141 3203
… …
2166static int 3228static int
2167slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3229slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2168{ 3230{
2169 AV *state = (AV *)frame->data; 3231 AV *state = (AV *)frame->data;
2170 3232
3233 /* if we are about to throw, return early */
3234 /* this does not cancel the aio request, but at least */
3235 /* it quickly returns */
3236 if (CORO_THROW)
3237 return 0;
3238
2171 /* one element that is an RV? repeat! */ 3239 /* one element that is an RV? repeat! */
2172 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3240 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2173 return 1; 3241 return 1;
2174 3242
2175 /* restore status */ 3243 /* restore status */
… …
2216 dSP; 3284 dSP;
2217 3285
2218 static SV *prio_cv; 3286 static SV *prio_cv;
2219 static SV *prio_sv; 3287 static SV *prio_sv;
2220 3288
2221 if (expect_false (!prio_cv)) 3289 if (ecb_expect_false (!prio_cv))
2222 { 3290 {
2223 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3291 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2224 prio_sv = newSViv (0); 3292 prio_sv = newSViv (0);
2225 } 3293 }
2226 3294
… …
2245 3313
2246 for (i = 0; i < items; ++i) 3314 for (i = 0; i < items; ++i)
2247 PUSHs (arg [i]); 3315 PUSHs (arg [i]);
2248 3316
2249 /* now push the callback closure */ 3317 /* now push the callback closure */
2250 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3318 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2251 3319
2252 /* now call the AIO function - we assume our request is uncancelable */ 3320 /* now call the AIO function - we assume our request is uncancelable */
2253 PUTBACK; 3321 PUTBACK;
2254 call_sv ((SV *)req, G_VOID | G_DISCARD); 3322 call_sv ((SV *)req, G_VOID | G_DISCARD);
2255 } 3323 }
2256 3324
2257 /* now that the requets is going, we loop toll we have a result */ 3325 /* now that the request is going, we loop till we have a result */
2258 frame->data = (void *)state; 3326 frame->data = (void *)state;
2259 frame->prepare = prepare_schedule; 3327 frame->prepare = prepare_schedule;
2260 frame->check = slf_check_aio_req; 3328 frame->check = slf_check_aio_req;
2261} 3329}
2262 3330
… …
2269 3337
2270 XSRETURN_EMPTY; 3338 XSRETURN_EMPTY;
2271} 3339}
2272 3340
2273/*****************************************************************************/ 3341/*****************************************************************************/
3342
3343#if CORO_CLONE
3344# include "clone.c"
3345#endif
3346
3347/*****************************************************************************/
3348
3349static SV *
3350coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3351{
3352 SV *coro_sv;
3353 struct coro *coro;
3354 MAGIC *mg;
3355 HV *hv;
3356 SV *cb;
3357 int i;
3358
3359 if (argc > 0)
3360 {
3361 cb = s_get_cv_croak (argv [0]);
3362
3363 if (!is_coro)
3364 {
3365 if (CvISXSUB (cb))
3366 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3367
3368 if (!CvROOT (cb))
3369 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3370 }
3371 }
3372
3373 Newz (0, coro, 1, struct coro);
3374 coro->args = newAV ();
3375 coro->flags = CF_NEW;
3376
3377 if (coro_first) coro_first->prev = coro;
3378 coro->next = coro_first;
3379 coro_first = coro;
3380
3381 coro->hv = hv = newHV ();
3382 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3383 mg->mg_flags |= MGf_DUP;
3384 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3385
3386 if (argc > 0)
3387 {
3388 av_extend (coro->args, argc + is_coro - 1);
3389
3390 if (is_coro)
3391 {
3392 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3393 cb = (SV *)cv_coro_run;
3394 }
3395
3396 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3397
3398 for (i = 1; i < argc; i++)
3399 av_push (coro->args, newSVsv (argv [i]));
3400 }
3401
3402 return coro_sv;
3403}
3404
3405#ifndef __cplusplus
3406ecb_cold XS(boot_Coro__State);
3407#endif
3408
3409#if CORO_JIT
3410
3411static void ecb_noinline ecb_cold
3412pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3413{
3414 dSP;
3415 AV *av = newAV ();
3416
3417 av_store (av, 3, newSVuv (d));
3418 av_store (av, 2, newSVuv (c));
3419 av_store (av, 1, newSVuv (b));
3420 av_store (av, 0, newSVuv (a));
3421
3422 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3423
3424 PUTBACK;
3425}
3426
3427static void ecb_noinline ecb_cold
3428jit_init (pTHX)
3429{
3430 dSP;
3431 SV *load, *save;
3432 char *map_base;
3433 char *load_ptr, *save_ptr;
3434 STRLEN load_len, save_len, map_len;
3435 int count;
3436
3437 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3438
3439 PUSHMARK (SP);
3440 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3441 #include "state.h"
3442 count = call_pv ("Coro::State::_jit", G_ARRAY);
3443 SPAGAIN;
3444
3445 save = POPs; save_ptr = SvPVbyte (save, save_len);
3446 load = POPs; load_ptr = SvPVbyte (load, load_len);
3447
3448 map_len = load_len + save_len + 16;
3449
3450 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3451
3452 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3453
3454 load_perl_slots = (load_save_perl_slots_type)map_base;
3455 memcpy (map_base, load_ptr, load_len);
3456
3457 map_base += (load_len + 15) & ~15;
3458
3459 save_perl_slots = (load_save_perl_slots_type)map_base;
3460 memcpy (map_base, save_ptr, save_len);
3461
3462 /* we are good citizens and try to make the page read-only, so the evil evil */
3463 /* hackers might have it a bit more difficult */
3464 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3465
3466 PUTBACK;
3467 eval_pv ("undef &Coro::State::_jit", 1);
3468}
3469
3470#endif
2274 3471
2275MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3472MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2276 3473
2277PROTOTYPES: DISABLE 3474PROTOTYPES: DISABLE
2278 3475
… …
2283 coro_thx = PERL_GET_CONTEXT; 3480 coro_thx = PERL_GET_CONTEXT;
2284# endif 3481# endif
2285#endif 3482#endif
2286 BOOT_PAGESIZE; 3483 BOOT_PAGESIZE;
2287 3484
3485 /* perl defines these to check for existance first, but why it doesn't */
3486 /* just create them one at init time is not clear to me, except for */
3487 /* programs trying to delete them, but... */
3488 /* anyway, we declare this as invalid and make sure they are initialised here */
3489 DEFSV;
3490 ERRSV;
3491
3492 cctx_current = cctx_new_empty ();
3493
2288 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3494 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2289 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3495 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2290 3496
2291 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3497 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2292 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3498 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
… …
2311 3517
2312 { 3518 {
2313 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3519 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2314 3520
2315 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3521 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2316 hv_store_ent (PL_custom_op_names, slf, 3522 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2317 newSVpv ("coro_slf", 0), 0);
2318 3523
2319 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3524 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2320 hv_store_ent (PL_custom_op_descs, slf, 3525 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2321 newSVpv ("coro schedule like function", 0), 0);
2322 } 3526 }
2323 3527
2324 coroapi.ver = CORO_API_VERSION; 3528 coroapi.ver = CORO_API_VERSION;
2325 coroapi.rev = CORO_API_REVISION; 3529 coroapi.rev = CORO_API_REVISION;
2326 3530
… …
2331 coroapi.prepare_nop = prepare_nop; 3535 coroapi.prepare_nop = prepare_nop;
2332 coroapi.prepare_schedule = prepare_schedule; 3536 coroapi.prepare_schedule = prepare_schedule;
2333 coroapi.prepare_cede = prepare_cede; 3537 coroapi.prepare_cede = prepare_cede;
2334 coroapi.prepare_cede_notself = prepare_cede_notself; 3538 coroapi.prepare_cede_notself = prepare_cede_notself;
2335 3539
2336 { 3540 time_init (aTHX);
2337 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2338 3541
2339 if (!svp) croak ("Time::HiRes is required");
2340 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2341
2342 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2343 }
2344
2345 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3542 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3543#if CORO_JIT
3544 PUTBACK;
3545 jit_init (aTHX);
3546 SPAGAIN;
3547#endif
2346} 3548}
2347 3549
2348SV * 3550SV *
2349new (char *klass, ...) 3551new (SV *klass, ...)
3552 ALIAS:
3553 Coro::new = 1
2350 CODE: 3554 CODE:
2351{ 3555 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2352 struct coro *coro; 3556 OUTPUT:
2353 MAGIC *mg;
2354 HV *hv;
2355 int i;
2356
2357 Newz (0, coro, 1, struct coro);
2358 coro->args = newAV ();
2359 coro->flags = CF_NEW;
2360
2361 if (coro_first) coro_first->prev = coro;
2362 coro->next = coro_first;
2363 coro_first = coro;
2364
2365 coro->hv = hv = newHV ();
2366 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2367 mg->mg_flags |= MGf_DUP;
2368 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2369
2370 av_extend (coro->args, items - 1);
2371 for (i = 1; i < items; i++)
2372 av_push (coro->args, newSVsv (ST (i)));
2373}
2374 OUTPUT:
2375 RETVAL 3557 RETVAL
2376 3558
2377void 3559void
2378transfer (...) 3560transfer (...)
2379 PROTOTYPE: $$ 3561 PROTOTYPE: $$
2380 CODE: 3562 CODE:
2381 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3563 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2382 3564
2383bool
2384_destroy (SV *coro_sv)
2385 CODE:
2386 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2387 OUTPUT:
2388 RETVAL
2389
2390void 3565void
2391_exit (int code) 3566_exit (int code)
2392 PROTOTYPE: $ 3567 PROTOTYPE: $
2393 CODE: 3568 CODE:
2394 _exit (code); 3569 _exit (code);
3570
3571SV *
3572clone (Coro::State coro)
3573 CODE:
3574{
3575#if CORO_CLONE
3576 struct coro *ncoro = coro_clone (aTHX_ coro);
3577 MAGIC *mg;
3578 /* TODO: too much duplication */
3579 ncoro->hv = newHV ();
3580 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3581 mg->mg_flags |= MGf_DUP;
3582 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3583#else
3584 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3585#endif
3586}
3587 OUTPUT:
3588 RETVAL
2395 3589
2396int 3590int
2397cctx_stacksize (int new_stacksize = 0) 3591cctx_stacksize (int new_stacksize = 0)
2398 PROTOTYPE: ;$ 3592 PROTOTYPE: ;$
2399 CODE: 3593 CODE:
… …
2435void 3629void
2436list () 3630list ()
2437 PROTOTYPE: 3631 PROTOTYPE:
2438 PPCODE: 3632 PPCODE:
2439{ 3633{
2440 struct coro *coro; 3634 struct coro *coro;
2441 for (coro = coro_first; coro; coro = coro->next) 3635 for (coro = coro_first; coro; coro = coro->next)
2442 if (coro->hv) 3636 if (coro->hv)
2443 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3637 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2444} 3638}
2445 3639
… …
2449 eval = 1 3643 eval = 1
2450 CODE: 3644 CODE:
2451{ 3645{
2452 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3646 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2453 { 3647 {
2454 struct coro temp; 3648 struct coro *current = SvSTATE_current;
3649 struct CoroSLF slf_save;
2455 3650
2456 if (!(coro->flags & CF_RUNNING)) 3651 if (current != coro)
2457 { 3652 {
2458 PUTBACK; 3653 PUTBACK;
2459 save_perl (aTHX_ &temp); 3654 save_perl (aTHX_ current);
2460 load_perl (aTHX_ coro); 3655 load_perl (aTHX_ coro);
3656 /* the coro is most likely in an active SLF call.
3657 * while not strictly required (the code we execute is
3658 * not allowed to call any SLF functions), it's cleaner
3659 * to reinitialise the slf_frame and restore it later.
3660 * This might one day allow us to actually do SLF calls
3661 * from code executed here.
3662 */
3663 slf_save = slf_frame;
3664 slf_frame.prepare = 0;
3665 SPAGAIN;
2461 } 3666 }
2462 3667
2463 {
2464 dSP;
2465 ENTER;
2466 SAVETMPS;
2467 PUTBACK;
2468 PUSHSTACK; 3668 PUSHSTACK;
3669
2469 PUSHMARK (SP); 3670 PUSHMARK (SP);
3671 PUTBACK;
2470 3672
2471 if (ix) 3673 if (ix)
2472 eval_sv (coderef, 0); 3674 eval_sv (coderef, 0);
2473 else 3675 else
2474 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3676 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2475 3677
2476 POPSTACK; 3678 POPSTACK;
2477 SPAGAIN; 3679 SPAGAIN;
2478 FREETMPS;
2479 LEAVE;
2480 PUTBACK;
2481 }
2482 3680
2483 if (!(coro->flags & CF_RUNNING)) 3681 if (current != coro)
2484 { 3682 {
3683 PUTBACK;
3684 slf_frame = slf_save;
2485 save_perl (aTHX_ coro); 3685 save_perl (aTHX_ coro);
2486 load_perl (aTHX_ &temp); 3686 load_perl (aTHX_ current);
2487 SPAGAIN; 3687 SPAGAIN;
2488 } 3688 }
2489 } 3689 }
2490} 3690}
2491 3691
… …
2494 PROTOTYPE: $ 3694 PROTOTYPE: $
2495 ALIAS: 3695 ALIAS:
2496 is_ready = CF_READY 3696 is_ready = CF_READY
2497 is_running = CF_RUNNING 3697 is_running = CF_RUNNING
2498 is_new = CF_NEW 3698 is_new = CF_NEW
2499 is_destroyed = CF_DESTROYED 3699 is_destroyed = CF_ZOMBIE
3700 is_zombie = CF_ZOMBIE
3701 is_suspended = CF_SUSPENDED
2500 CODE: 3702 CODE:
2501 RETVAL = boolSV (coro->flags & ix); 3703 RETVAL = boolSV (coro->flags & ix);
2502 OUTPUT: 3704 OUTPUT:
2503 RETVAL 3705 RETVAL
2504 3706
2505void 3707void
2506throw (Coro::State self, SV *throw = &PL_sv_undef) 3708throw (SV *self, SV *exception = &PL_sv_undef)
2507 PROTOTYPE: $;$ 3709 PROTOTYPE: $;$
2508 CODE: 3710 CODE:
2509{ 3711{
3712 struct coro *coro = SvSTATE (self);
2510 struct coro *current = SvSTATE_current; 3713 struct coro *current = SvSTATE_current;
2511 SV **throwp = self == current ? &coro_throw : &self->throw; 3714 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2512 SvREFCNT_dec (*throwp); 3715 SvREFCNT_dec (*exceptionp);
2513 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3716 SvGETMAGIC (exception);
3717 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3718
3719 api_ready (aTHX_ self);
2514} 3720}
2515 3721
2516void 3722void
2517api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3723api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2518 PROTOTYPE: $;$ 3724 PROTOTYPE: $;$
… …
2520 3726
2521SV * 3727SV *
2522has_cctx (Coro::State coro) 3728has_cctx (Coro::State coro)
2523 PROTOTYPE: $ 3729 PROTOTYPE: $
2524 CODE: 3730 CODE:
2525 RETVAL = boolSV (!!coro->cctx); 3731 /* maybe manage the running flag differently */
3732 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2526 OUTPUT: 3733 OUTPUT:
2527 RETVAL 3734 RETVAL
2528 3735
2529int 3736int
2530is_traced (Coro::State coro) 3737is_traced (Coro::State coro)
… …
2550 3757
2551void 3758void
2552force_cctx () 3759force_cctx ()
2553 PROTOTYPE: 3760 PROTOTYPE:
2554 CODE: 3761 CODE:
2555 SvSTATE_current->cctx->idle_sp = 0; 3762 cctx_current->idle_sp = 0;
2556 3763
2557void 3764void
2558swap_defsv (Coro::State self) 3765swap_defsv (Coro::State self)
2559 PROTOTYPE: $ 3766 PROTOTYPE: $
2560 ALIAS: 3767 ALIAS:
… …
2568 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3775 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2569 3776
2570 SV *tmp = *src; *src = *dst; *dst = tmp; 3777 SV *tmp = *src; *src = *dst; *dst = tmp;
2571 } 3778 }
2572 3779
3780void
3781cancel (Coro::State self)
3782 CODE:
3783 coro_state_destroy (aTHX_ self);
3784
3785SV *
3786enable_times (int enabled = enable_times)
3787 CODE:
3788{
3789 RETVAL = boolSV (enable_times);
3790
3791 if (enabled != enable_times)
3792 {
3793 enable_times = enabled;
3794
3795 coro_times_update ();
3796 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3797 }
3798}
3799 OUTPUT:
3800 RETVAL
3801
3802void
3803times (Coro::State self)
3804 PPCODE:
3805{
3806 struct coro *current = SvSTATE (coro_current);
3807
3808 if (ecb_expect_false (current == self))
3809 {
3810 coro_times_update ();
3811 coro_times_add (SvSTATE (coro_current));
3812 }
3813
3814 EXTEND (SP, 2);
3815 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3816 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3817
3818 if (ecb_expect_false (current == self))
3819 coro_times_sub (SvSTATE (coro_current));
3820}
3821
3822void
3823swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3824 CODE:
3825{
3826 struct coro *current = SvSTATE_current;
3827
3828 if (current == coro)
3829 SWAP_SVS (current);
3830
3831 if (!coro->swap_sv)
3832 coro->swap_sv = newAV ();
3833
3834 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3835 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3836
3837 if (current == coro)
3838 SWAP_SVS (current);
3839}
3840
2573 3841
2574MODULE = Coro::State PACKAGE = Coro 3842MODULE = Coro::State PACKAGE = Coro
2575 3843
2576BOOT: 3844BOOT:
2577{ 3845{
2578 int i;
2579
2580 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2581 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3846 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2582 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3847 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2583 3848 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2584 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3849 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2585 SvREADONLY_on (coro_current); 3850 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3851 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3852 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3853 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3854
3855 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3856 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3857 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3858 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2586 3859
2587 coro_stash = gv_stashpv ("Coro", TRUE); 3860 coro_stash = gv_stashpv ("Coro", TRUE);
2588 3861
2589 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3862 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2590 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3863 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2591 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3864 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2592 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3865 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2593 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3866 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2594 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3867 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2595
2596 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2597 coro_ready[i] = newAV ();
2598 3868
2599 { 3869 {
2600 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3870 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2601 3871
2602 coroapi.schedule = api_schedule; 3872 coroapi.schedule = api_schedule;
3873 coroapi.schedule_to = api_schedule_to;
2603 coroapi.cede = api_cede; 3874 coroapi.cede = api_cede;
2604 coroapi.cede_notself = api_cede_notself; 3875 coroapi.cede_notself = api_cede_notself;
2605 coroapi.ready = api_ready; 3876 coroapi.ready = api_ready;
2606 coroapi.is_ready = api_is_ready; 3877 coroapi.is_ready = api_is_ready;
2607 coroapi.nready = coro_nready; 3878 coroapi.nready = coro_nready;
2608 coroapi.current = coro_current; 3879 coroapi.current = coro_current;
2609 3880
2610 GCoroAPI = &coroapi; 3881 /*GCoroAPI = &coroapi;*/
2611 sv_setiv (sv, (IV)&coroapi); 3882 sv_setiv (sv, (IV)&coroapi);
2612 SvREADONLY_on (sv); 3883 SvREADONLY_on (sv);
2613 } 3884 }
2614} 3885}
3886
3887SV *
3888async (...)
3889 PROTOTYPE: &@
3890 CODE:
3891 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3892 api_ready (aTHX_ RETVAL);
3893 OUTPUT:
3894 RETVAL
3895
3896void
3897_destroy (Coro::State coro)
3898 CODE:
3899 /* used by the manager thread */
3900 coro_state_destroy (aTHX_ coro);
3901
3902void
3903on_destroy (Coro::State coro, SV *cb)
3904 CODE:
3905 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3906
3907void
3908join (...)
3909 CODE:
3910 CORO_EXECUTE_SLF_XS (slf_init_join);
3911
3912void
3913terminate (...)
3914 CODE:
3915 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3916
3917void
3918cancel (...)
3919 CODE:
3920 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3921
3922int
3923safe_cancel (Coro::State self, ...)
3924 C_ARGS: aTHX_ self, &ST (1), items - 1
2615 3925
2616void 3926void
2617schedule (...) 3927schedule (...)
2618 CODE: 3928 CODE:
2619 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3929 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3930
3931void
3932schedule_to (...)
3933 CODE:
3934 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3935
3936void
3937cede_to (...)
3938 CODE:
3939 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2620 3940
2621void 3941void
2622cede (...) 3942cede (...)
2623 CODE: 3943 CODE:
2624 CORO_EXECUTE_SLF_XS (slf_init_cede); 3944 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2638void 3958void
2639_set_readyhook (SV *hook) 3959_set_readyhook (SV *hook)
2640 PROTOTYPE: $ 3960 PROTOTYPE: $
2641 CODE: 3961 CODE:
2642 SvREFCNT_dec (coro_readyhook); 3962 SvREFCNT_dec (coro_readyhook);
3963 SvGETMAGIC (hook);
3964 if (SvOK (hook))
3965 {
2643 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3966 coro_readyhook = newSVsv (hook);
3967 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3968 }
3969 else
3970 {
3971 coro_readyhook = 0;
3972 CORO_READYHOOK = 0;
3973 }
2644 3974
2645int 3975int
2646prio (Coro::State coro, int newprio = 0) 3976prio (Coro::State coro, int newprio = 0)
2647 PROTOTYPE: $;$ 3977 PROTOTYPE: $;$
2648 ALIAS: 3978 ALIAS:
… …
2654 if (items > 1) 3984 if (items > 1)
2655 { 3985 {
2656 if (ix) 3986 if (ix)
2657 newprio = coro->prio - newprio; 3987 newprio = coro->prio - newprio;
2658 3988
2659 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3989 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2660 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3990 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2661 3991
2662 coro->prio = newprio; 3992 coro->prio = newprio;
2663 } 3993 }
2664} 3994}
2665 OUTPUT: 3995 OUTPUT:
… …
2679 CODE: 4009 CODE:
2680 RETVAL = coro_nready; 4010 RETVAL = coro_nready;
2681 OUTPUT: 4011 OUTPUT:
2682 RETVAL 4012 RETVAL
2683 4013
2684# for async_pool speedup
2685void 4014void
2686_pool_1 (SV *cb) 4015suspend (Coro::State self)
4016 PROTOTYPE: $
2687 CODE: 4017 CODE:
2688{ 4018 self->flags |= CF_SUSPENDED;
2689 HV *hv = (HV *)SvRV (coro_current);
2690 struct coro *coro = SvSTATE_hv ((SV *)hv);
2691 AV *defav = GvAV (PL_defgv);
2692 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2693 AV *invoke_av;
2694 int i, len;
2695 4019
2696 if (!invoke) 4020void
4021resume (Coro::State self)
4022 PROTOTYPE: $
4023 CODE:
4024 self->flags &= ~CF_SUSPENDED;
4025
4026void
4027_pool_handler (...)
4028 CODE:
4029 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4030
4031void
4032async_pool (SV *cv, ...)
4033 PROTOTYPE: &@
4034 PPCODE:
4035{
4036 HV *hv = (HV *)av_pop (av_async_pool);
4037 AV *av = newAV ();
4038 SV *cb = ST (0);
4039 int i;
4040
4041 av_extend (av, items - 2);
4042 for (i = 1; i < items; ++i)
4043 av_push (av, SvREFCNT_inc_NN (ST (i)));
4044
4045 if ((SV *)hv == &PL_sv_undef)
2697 { 4046 {
2698 SV *old = PL_diehook; 4047 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2699 PL_diehook = 0; 4048 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2700 SvREFCNT_dec (old); 4049 SvREFCNT_dec (sv);
2701 croak ("\3async_pool terminate\2\n");
2702 } 4050 }
2703 4051
2704 SvREFCNT_dec (coro->saved_deffh);
2705 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2706
2707 hv_store (hv, "desc", sizeof ("desc") - 1,
2708 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2709
2710 invoke_av = (AV *)SvRV (invoke);
2711 len = av_len (invoke_av);
2712
2713 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2714
2715 if (len > 0)
2716 { 4052 {
2717 av_fill (defav, len - 1); 4053 struct coro *coro = SvSTATE_hv (hv);
2718 for (i = 0; i < len; ++i) 4054
2719 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4055 assert (!coro->invoke_cb);
4056 assert (!coro->invoke_av);
4057 coro->invoke_cb = SvREFCNT_inc (cb);
4058 coro->invoke_av = av;
2720 } 4059 }
4060
4061 api_ready (aTHX_ (SV *)hv);
4062
4063 if (GIMME_V != G_VOID)
4064 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4065 else
4066 SvREFCNT_dec (hv);
2721} 4067}
4068
4069SV *
4070rouse_cb ()
4071 PROTOTYPE:
4072 CODE:
4073 RETVAL = coro_new_rouse_cb (aTHX);
4074 OUTPUT:
4075 RETVAL
2722 4076
2723void 4077void
2724_pool_2 (SV *cb) 4078rouse_wait (...)
4079 PROTOTYPE: ;$
4080 PPCODE:
4081 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4082
4083void
4084on_enter (SV *block)
4085 ALIAS:
4086 on_leave = 1
4087 PROTOTYPE: &
2725 CODE: 4088 CODE:
2726{ 4089{
2727 HV *hv = (HV *)SvRV (coro_current);
2728 struct coro *coro = SvSTATE_hv ((SV *)hv); 4090 struct coro *coro = SvSTATE_current;
4091 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2729 4092
2730 sv_setsv (cb, &PL_sv_undef); 4093 block = s_get_cv_croak (block);
2731 4094
2732 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4095 if (!*avp)
2733 coro->saved_deffh = 0; 4096 *avp = newAV ();
2734 4097
2735 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 4098 av_push (*avp, SvREFCNT_inc (block));
2736 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2737 {
2738 SV *old = PL_diehook;
2739 PL_diehook = 0;
2740 SvREFCNT_dec (old);
2741 croak ("\3async_pool terminate\2\n");
2742 }
2743 4099
2744 av_clear (GvAV (PL_defgv)); 4100 if (!ix)
2745 hv_store (hv, "desc", sizeof ("desc") - 1, 4101 on_enterleave_call (aTHX_ block);
2746 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2747 4102
2748 coro->prio = 0; 4103 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2749 4104 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2750 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 4105 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2751 api_trace (aTHX_ coro_current, 0);
2752
2753 av_push (av_async_pool, newSVsv (coro_current));
2754} 4106}
2755 4107
2756 4108
2757MODULE = Coro::State PACKAGE = PerlIO::cede 4109MODULE = Coro::State PACKAGE = PerlIO::cede
2758 4110
… …
2761 4113
2762 4114
2763MODULE = Coro::State PACKAGE = Coro::Semaphore 4115MODULE = Coro::State PACKAGE = Coro::Semaphore
2764 4116
2765SV * 4117SV *
2766new (SV *klass, SV *count_ = 0) 4118new (SV *klass, SV *count = 0)
2767 CODE: 4119 CODE:
2768{ 4120{
2769 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4121 int semcnt = 1;
2770 AV *av = newAV ();
2771 SV **ary;
2772 4122
2773 /* unfortunately, building manually saves memory */ 4123 if (count)
2774 Newx (ary, 2, SV *); 4124 {
2775 AvALLOC (av) = ary; 4125 SvGETMAGIC (count);
2776 AvARRAY (av) = ary;
2777 AvMAX (av) = 1;
2778 AvFILLp (av) = 0;
2779 ary [0] = newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1);
2780 4126
2781 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4127 if (SvOK (count))
4128 semcnt = SvIV (count);
4129 }
4130
4131 RETVAL = sv_bless (
4132 coro_waitarray_new (aTHX_ semcnt),
4133 GvSTASH (CvGV (cv))
4134 );
2782} 4135}
4136 OUTPUT:
4137 RETVAL
4138
4139# helper for Coro::Channel and others
4140SV *
4141_alloc (int count)
4142 CODE:
4143 RETVAL = coro_waitarray_new (aTHX_ count);
2783 OUTPUT: 4144 OUTPUT:
2784 RETVAL 4145 RETVAL
2785 4146
2786SV * 4147SV *
2787count (SV *self) 4148count (SV *self)
… …
2796 adjust = 1 4157 adjust = 1
2797 CODE: 4158 CODE:
2798 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4159 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2799 4160
2800void 4161void
2801down (SV *self) 4162down (...)
2802 CODE: 4163 CODE:
2803 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4164 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4165
4166void
4167wait (...)
4168 CODE:
4169 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2804 4170
2805void 4171void
2806try (SV *self) 4172try (SV *self)
2807 PPCODE: 4173 PPCODE:
2808{ 4174{
… …
2820 XSRETURN_NO; 4186 XSRETURN_NO;
2821} 4187}
2822 4188
2823void 4189void
2824waiters (SV *self) 4190waiters (SV *self)
2825 CODE: 4191 PPCODE:
2826{ 4192{
2827 AV *av = (AV *)SvRV (self); 4193 AV *av = (AV *)SvRV (self);
4194 int wcount = AvFILLp (av) + 1 - 1;
2828 4195
2829 if (GIMME_V == G_SCALAR) 4196 if (GIMME_V == G_SCALAR)
2830 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4197 XPUSHs (sv_2mortal (newSViv (wcount)));
2831 else 4198 else
2832 { 4199 {
2833 int i; 4200 int i;
2834 EXTEND (SP, AvFILLp (av) + 1 - 1); 4201 EXTEND (SP, wcount);
2835 for (i = 1; i <= AvFILLp (av); ++i) 4202 for (i = 1; i <= wcount; ++i)
2836 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4203 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2837 } 4204 }
2838} 4205}
4206
4207MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4208
4209void
4210_may_delete (SV *sem, int count, unsigned int extra_refs)
4211 PPCODE:
4212{
4213 AV *av = (AV *)SvRV (sem);
4214
4215 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4216 && AvFILLp (av) == 0 /* no waiters, just count */
4217 && SvIV (AvARRAY (av)[0]) == count)
4218 XSRETURN_YES;
4219
4220 XSRETURN_NO;
4221}
4222
4223MODULE = Coro::State PACKAGE = Coro::Signal
4224
4225SV *
4226new (SV *klass)
4227 CODE:
4228 RETVAL = sv_bless (
4229 coro_waitarray_new (aTHX_ 0),
4230 GvSTASH (CvGV (cv))
4231 );
4232 OUTPUT:
4233 RETVAL
4234
4235void
4236wait (...)
4237 CODE:
4238 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4239
4240void
4241broadcast (SV *self)
4242 CODE:
4243{
4244 AV *av = (AV *)SvRV (self);
4245 coro_signal_wake (aTHX_ av, AvFILLp (av));
4246}
4247
4248void
4249send (SV *self)
4250 CODE:
4251{
4252 AV *av = (AV *)SvRV (self);
4253
4254 if (AvFILLp (av))
4255 coro_signal_wake (aTHX_ av, 1);
4256 else
4257 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4258}
4259
4260IV
4261awaited (SV *self)
4262 CODE:
4263 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4264 OUTPUT:
4265 RETVAL
2839 4266
2840 4267
2841MODULE = Coro::State PACKAGE = Coro::AnyEvent 4268MODULE = Coro::State PACKAGE = Coro::AnyEvent
2842 4269
2843BOOT: 4270BOOT:
… …
2845 4272
2846void 4273void
2847_schedule (...) 4274_schedule (...)
2848 CODE: 4275 CODE:
2849{ 4276{
2850 static int incede; 4277 static int incede;
2851 4278
2852 api_cede_notself (aTHX); 4279 api_cede_notself (aTHX);
2853 4280
2854 ++incede; 4281 ++incede;
2855 while (coro_nready >= incede && api_cede (aTHX)) 4282 while (coro_nready >= incede && api_cede (aTHX))
… …
2871 4298
2872void 4299void
2873_register (char *target, char *proto, SV *req) 4300_register (char *target, char *proto, SV *req)
2874 CODE: 4301 CODE:
2875{ 4302{
2876 HV *st; 4303 SV *req_cv = s_get_cv_croak (req);
2877 GV *gvp;
2878 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
2879 /* newXSproto doesn't return the CV on 5.8 */ 4304 /* newXSproto doesn't return the CV on 5.8 */
2880 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4305 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
2881 sv_setpv ((SV *)slf_cv, proto); 4306 sv_setpv ((SV *)slf_cv, proto);
2882 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4307 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
2883} 4308}
2884 4309
4310MODULE = Coro::State PACKAGE = Coro::Select
4311
4312void
4313patch_pp_sselect ()
4314 CODE:
4315 if (!coro_old_pp_sselect)
4316 {
4317 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4318 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4319 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4320 }
4321
4322void
4323unpatch_pp_sselect ()
4324 CODE:
4325 if (coro_old_pp_sselect)
4326 {
4327 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4328 coro_old_pp_sselect = 0;
4329 }
4330

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