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Comparing Coro/Coro/State.xs (file contents):
Revision 1.303 by root, Wed Nov 19 05:52:42 2008 UTC vs.
Revision 1.440 by root, Sat Feb 22 14:12:45 2014 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 /* perl usually disables NDEBUG later */
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#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47
48/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
49/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
50#if PERL_VERSION_ATLEAST(5,19,0)
51# define SVt_BIND SVt_IV
52#endif
53
54#if defined(_WIN32)
55# undef HAS_GETTIMEOFDAY
18# undef setjmp 56# undef setjmp
19# undef longjmp 57# undef longjmp
20# undef _exit 58# undef _exit
21# define setjmp _setjmp /* deep magic */ 59# define setjmp _setjmp /* deep magic */
22#else 60#else
23# include <inttypes.h> /* most portable stdint.h */ 61# include <inttypes.h> /* most portable stdint.h */
24#endif 62#endif
25 63
26#ifdef HAVE_MMAP
27# include <unistd.h>
28# include <sys/mman.h>
29# ifndef MAP_ANONYMOUS
30# ifdef MAP_ANON
31# define MAP_ANONYMOUS MAP_ANON
32# else
33# undef HAVE_MMAP
34# endif
35# endif
36# include <limits.h>
37# ifndef PAGESIZE
38# define PAGESIZE pagesize
39# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
40static long pagesize;
41# else
42# define BOOT_PAGESIZE (void)0
43# endif
44#else
45# define PAGESIZE 0
46# define BOOT_PAGESIZE (void)0
47#endif
48
49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h>
51#endif
52
53/* the maximum number of idle cctx that will be pooled */ 64/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 65static int cctx_max_idle = 4;
55 66
56#define PERL_VERSION_ATLEAST(a,b,c) \ 67#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 68# 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
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 69#endif
116 70
117/* prefer perl internal functions over our own? */ 71/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 72#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 73# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 81#else
128# define dSTACKLEVEL volatile void *stacklevel 82# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 83# define STACKLEVEL ((void *)&stacklevel)
130#endif 84#endif
131 85
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 86#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 87
149#include "CoroAPI.h" 88#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 89#define GCoroAPI (&coroapi) /* very sneaky */
151 90
152#ifdef USE_ITHREADS 91#ifdef USE_ITHREADS
153# if CORO_PTHREAD 92# if CORO_PTHREAD
154static void *coro_thx; 93static void *coro_thx;
155# endif 94# endif
156#endif 95#endif
157 96
97#ifdef __linux
98# include <time.h> /* for timespec */
99# include <syscall.h> /* for SYS_* */
100# ifdef SYS_clock_gettime
101# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
102# define CORO_CLOCK_MONOTONIC 1
103# define CORO_CLOCK_THREAD_CPUTIME_ID 3
104# endif
105#endif
106
158static double (*nvtime)(); /* so why doesn't it take void? */ 107static double (*nvtime)(); /* so why doesn't it take void? */
108static void (*u2time)(pTHX_ UV ret[2]);
159 109
160/* we hijack an hopefully unused CV flag for our purposes */ 110/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 111#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 112static OP *pp_slf (pTHX);
113static void slf_destroy (pTHX_ struct coro *coro);
163 114
164static U32 cctx_gen; 115static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 116static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 117static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 118static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 119static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 120static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 121static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 122
123static AV *av_destroy; /* destruction queue */
124static SV *sv_manager; /* the manager coro */
125static SV *sv_idle; /* $Coro::idle */
126
172static GV *irsgv; /* $/ */ 127static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 128static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 129static SV *rv_diehook;
175static SV *rv_warnhook; 130static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 131static HV *hv_sig; /* %SIG */
177 132
178/* async_pool helper stuff */ 133/* async_pool helper stuff */
179static SV *sv_pool_rss; 134static SV *sv_pool_rss;
180static SV *sv_pool_size; 135static SV *sv_pool_size;
136static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 137static AV *av_async_pool; /* idle pool */
138static SV *sv_Coro; /* class string */
139static CV *cv_pool_handler;
182 140
183/* Coro::AnyEvent */ 141/* Coro::AnyEvent */
184static SV *sv_activity; 142static SV *sv_activity;
185 143
144/* enable processtime/realtime profiling */
145static char enable_times;
146typedef U32 coro_ts[2];
147static coro_ts time_real, time_cpu;
148static char times_valid;
149
186static struct coro_cctx *cctx_first; 150static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 151static int cctx_count, cctx_idle;
188 152
189enum { 153enum
154{
190 CC_MAPPED = 0x01, 155 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 156 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 157 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 158 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 159 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 164typedef struct coro_cctx
200{ 165{
201 struct coro_cctx *next; 166 struct coro_cctx *next;
202 167
203 /* the stack */ 168 /* the stack */
204 void *sptr; 169 struct coro_stack stack;
205 size_t ssize;
206 170
207 /* cpu state */ 171 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 172 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
173#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 174 JMPENV *idle_te; /* same as idle_sp, but for top_env */
175#endif
210 JMPENV *top_env; 176 JMPENV *top_env;
211 coro_context cctx; 177 coro_context cctx;
212 178
213 U32 gen; 179 U32 gen;
214#if CORO_USE_VALGRIND 180#if CORO_USE_VALGRIND
215 int valgrind_id; 181 int valgrind_id;
216#endif 182#endif
217 unsigned char flags; 183 unsigned char flags;
218} coro_cctx; 184} coro_cctx;
219 185
186static coro_cctx *cctx_current; /* the currently running cctx */
187
188/*****************************************************************************/
189
190static MGVTBL coro_state_vtbl;
191
220enum { 192enum
193{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 194 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 195 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 196 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 197 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
198 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
199 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 200};
226 201
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 202/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 203typedef struct
229{ 204{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 205 #define VARx(name,expr,type) type name;
235# include "state.h" 206 #include "state.h"
236#undef VAR
237} perl_slots; 207} perl_slots;
238 208
209/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 210#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 211
241/* this is a structure representing a perl-level coroutine */ 212/* this is a structure representing a perl-level coroutine */
242struct coro { 213struct coro
214{
243 /* the C coroutine allocated to this perl coroutine, if any */ 215 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 216 coro_cctx *cctx;
217
218 /* ready queue */
219 struct coro *next_ready;
245 220
246 /* state data */ 221 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 222 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 223 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 224 perl_slots *slot; /* basically the saved sp */
250 225
226 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 227 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 228 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 229 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 230
257 /* statistics */ 231 /* statistics */
258 int usecount; /* number of transfers to this coro */ 232 int usecount; /* number of transfers to this coro */
259 233
260 /* coro process data */ 234 /* coro process data */
261 int prio; 235 int prio;
262 SV *except; /* exception to be thrown */ 236 SV *except; /* exception to be thrown */
263 SV *rouse_cb; 237 SV *rouse_cb; /* last rouse callback */
238 AV *on_destroy; /* callbacks or coros to notify on destroy */
239 AV *status; /* the exit status list */
264 240
265 /* async_pool */ 241 /* async_pool */
266 SV *saved_deffh; 242 SV *saved_deffh;
243 SV *invoke_cb;
244 AV *invoke_av;
245
246 /* on_enter/on_leave */
247 AV *on_enter;
248 AV *on_leave;
249
250 /* swap_sv */
251 AV *swap_sv;
252
253 /* times */
254 coro_ts t_cpu, t_real;
267 255
268 /* linked list */ 256 /* linked list */
269 struct coro *next, *prev; 257 struct coro *next, *prev;
270}; 258};
271 259
272typedef struct coro *Coro__State; 260typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 261typedef struct coro *Coro__State_or_hashref;
274 262
275/* the following variables are effectively part of the perl context */ 263/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */ 264/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */ 265/* the main reason we don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */ 266static struct CoroSLF slf_frame; /* the current slf frame */
279 267
280/** Coro ********************************************************************/ 268/** Coro ********************************************************************/
281 269
282#define PRIO_MAX 3 270#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 271#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 272#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 273#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 274#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 275#define CORO_PRIO_MIN -4
288 276
289/* for Coro.pm */ 277/* for Coro.pm */
290static SV *coro_current; 278static SV *coro_current;
291static SV *coro_readyhook; 279static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 280static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
281static CV *cv_coro_run;
293static struct coro *coro_first; 282static struct coro *coro_first;
294#define coro_nready coroapi.nready 283#define coro_nready coroapi.nready
295 284
285/** JIT *********************************************************************/
286
287#if CORO_JIT
288 /* APPLE doesn't have mmap though */
289 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
290 #ifndef CORO_JIT_TYPE
291 #if ECB_AMD64 && CORO_JIT_UNIXY
292 #define CORO_JIT_TYPE "amd64-unix"
293 #elif __i386 && CORO_JIT_UNIXY
294 #define CORO_JIT_TYPE "x86-unix"
295 #endif
296 #endif
297#endif
298
299#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
300 #undef CORO_JIT
301#endif
302
303#if CORO_JIT
304 typedef void (*load_save_perl_slots_type)(perl_slots *);
305 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
306#endif
307
308/** Coro::Select ************************************************************/
309
310static OP *(*coro_old_pp_sselect) (pTHX);
311static SV *coro_select_select;
312
313/* horrible hack, but if it works... */
314static OP *
315coro_pp_sselect (pTHX)
316{
317 dSP;
318 PUSHMARK (SP - 4); /* fake argument list */
319 XPUSHs (coro_select_select);
320 PUTBACK;
321
322 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
323 PL_op->op_flags |= OPf_STACKED;
324 PL_op->op_private = 0;
325 return PL_ppaddr [OP_ENTERSUB](aTHX);
326}
327
328/** time stuff **************************************************************/
329
330#ifdef HAS_GETTIMEOFDAY
331
332ecb_inline void
333coro_u2time (pTHX_ UV ret[2])
334{
335 struct timeval tv;
336 gettimeofday (&tv, 0);
337
338 ret [0] = tv.tv_sec;
339 ret [1] = tv.tv_usec;
340}
341
342ecb_inline double
343coro_nvtime (void)
344{
345 struct timeval tv;
346 gettimeofday (&tv, 0);
347
348 return tv.tv_sec + tv.tv_usec * 1e-6;
349}
350
351ecb_inline void
352time_init (pTHX)
353{
354 nvtime = coro_nvtime;
355 u2time = coro_u2time;
356}
357
358#else
359
360ecb_inline void
361time_init (pTHX)
362{
363 SV **svp;
364
365 require_pv ("Time/HiRes.pm");
366
367 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
368
369 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
370 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
371
372 nvtime = INT2PTR (double (*)(), SvIV (*svp));
373
374 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
375 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
376}
377
378#endif
379
296/** lowlevel stuff **********************************************************/ 380/** lowlevel stuff **********************************************************/
297 381
298static SV * 382static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 383coro_get_sv (pTHX_ const char *name, int create)
300{ 384{
301#if PERL_VERSION_ATLEAST (5,10,0) 385#if PERL_VERSION_ATLEAST (5,10,0)
302 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 386 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
303 get_sv (name, create); 387 get_sv (name, create);
304#endif 388#endif
305 return get_sv (name, create); 389 return get_sv (name, create);
306} 390}
307 391
308static AV * 392static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 393coro_get_av (pTHX_ const char *name, int create)
310{ 394{
311#if PERL_VERSION_ATLEAST (5,10,0) 395#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 396 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create); 397 get_av (name, create);
314#endif 398#endif
315 return get_av (name, create); 399 return get_av (name, create);
316} 400}
317 401
318static HV * 402static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 403coro_get_hv (pTHX_ const char *name, int create)
320{ 404{
321#if PERL_VERSION_ATLEAST (5,10,0) 405#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 406 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create); 407 get_hv (name, create);
324#endif 408#endif
325 return get_hv (name, create); 409 return get_hv (name, create);
326} 410}
327 411
328static AV * 412ecb_inline void
413coro_times_update (void)
414{
415#ifdef coro_clock_gettime
416 struct timespec ts;
417
418 ts.tv_sec = ts.tv_nsec = 0;
419 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
420 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
421
422 ts.tv_sec = ts.tv_nsec = 0;
423 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
424 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
425#else
426 dTHX;
427 UV tv[2];
428
429 u2time (aTHX_ tv);
430 time_real [0] = tv [0];
431 time_real [1] = tv [1] * 1000;
432#endif
433}
434
435ecb_inline void
436coro_times_add (struct coro *c)
437{
438 c->t_real [1] += time_real [1];
439 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
440 c->t_real [0] += time_real [0];
441
442 c->t_cpu [1] += time_cpu [1];
443 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
444 c->t_cpu [0] += time_cpu [0];
445}
446
447ecb_inline void
448coro_times_sub (struct coro *c)
449{
450 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
451 c->t_real [1] -= time_real [1];
452 c->t_real [0] -= time_real [0];
453
454 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
455 c->t_cpu [1] -= time_cpu [1];
456 c->t_cpu [0] -= time_cpu [0];
457}
458
459/*****************************************************************************/
460/* magic glue */
461
462#define CORO_MAGIC_type_cv 26
463#define CORO_MAGIC_type_state PERL_MAGIC_ext
464
465#define CORO_MAGIC_NN(sv, type) \
466 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
467 ? SvMAGIC (sv) \
468 : mg_find (sv, type))
469
470#define CORO_MAGIC(sv, type) \
471 (ecb_expect_true (SvMAGIC (sv)) \
472 ? CORO_MAGIC_NN (sv, type) \
473 : 0)
474
475#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
476#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
477
478ecb_inline MAGIC *
479SvSTATEhv_p (pTHX_ SV *coro)
480{
481 MAGIC *mg;
482
483 if (ecb_expect_true (
484 SvTYPE (coro) == SVt_PVHV
485 && (mg = CORO_MAGIC_state (coro))
486 && mg->mg_virtual == &coro_state_vtbl
487 ))
488 return mg;
489
490 return 0;
491}
492
493ecb_inline struct coro *
494SvSTATE_ (pTHX_ SV *coro)
495{
496 MAGIC *mg;
497
498 if (SvROK (coro))
499 coro = SvRV (coro);
500
501 mg = SvSTATEhv_p (aTHX_ coro);
502 if (!mg)
503 croak ("Coro::State object required");
504
505 return (struct coro *)mg->mg_ptr;
506}
507
508#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
509
510/* faster than SvSTATE, but expects a coroutine hv */
511#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
512#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
513
514/*****************************************************************************/
515/* padlist management and caching */
516
517ecb_inline PADLIST *
329coro_clone_padlist (pTHX_ CV *cv) 518coro_derive_padlist (pTHX_ CV *cv)
330{ 519{
331 AV *padlist = CvPADLIST (cv); 520 PADLIST *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 521 PADLIST *newpadlist;
522 PAD *newpad;
523 PADOFFSET off = PadlistMAX (padlist) + 1;
333 524
334 newpadlist = newAV (); 525#if NEWPADAPI
526
527 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
528 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
529 while (!PadlistARRAY (padlist)[off - 1])
530 --off;
531
532 Perl_pad_push (aTHX_ padlist, off);
533
534 newpad = PadlistARRAY (padlist)[off];
535 PadlistARRAY (padlist)[off] = 0;
536
537#else
538
539#if PERL_VERSION_ATLEAST (5,10,0)
540 Perl_pad_push (aTHX_ padlist, off);
541#else
542 Perl_pad_push (aTHX_ padlist, off, 1);
543#endif
544
545 newpad = PadlistARRAY (padlist)[off];
546 PadlistMAX (padlist) = off - 1;
547
548#endif
549
550 newPADLIST (newpadlist);
551#if !PERL_VERSION_ATLEAST(5,15,3)
552 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
335 AvREAL_off (newpadlist); 553 AvREAL_off (newpadlist);
336#if PERL_VERSION_ATLEAST (5,10,0)
337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
338#else
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 554#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist);
343 555
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 556 /* Already extended to 2 elements by newPADLIST. */
345 av_store (newpadlist, 1, (SV *)newpad); 557 PadlistMAX (newpadlist) = 1;
558 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
559 PadlistARRAY (newpadlist)[1] = newpad;
346 560
347 return newpadlist; 561 return newpadlist;
348} 562}
349 563
350static void 564ecb_inline void
351free_padlist (pTHX_ AV *padlist) 565free_padlist (pTHX_ PADLIST *padlist)
352{ 566{
353 /* may be during global destruction */ 567 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 568 if (!IN_DESTRUCT)
355 { 569 {
356 I32 i = AvFILLp (padlist); 570 I32 i = PadlistMAX (padlist);
357 while (i >= 0) 571
572 while (i > 0) /* special-case index 0 */
358 { 573 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 574 /* we try to be extra-careful here */
575 PAD *pad = PadlistARRAY (padlist)[i--];
576
360 if (svp) 577 if (pad)
361 { 578 {
362 SV *sv; 579 I32 j = PadMAX (pad);
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 580
581 while (j >= 0)
364 SvREFCNT_dec (sv); 582 SvREFCNT_dec (PadARRAY (pad)[j--]);
365 583
584 PadMAX (pad) = -1;
366 SvREFCNT_dec (*svp); 585 SvREFCNT_dec (pad);
367 } 586 }
368 } 587 }
369 588
589 SvREFCNT_dec (PadlistNAMES (padlist));
590
591#if NEWPADAPI
592 Safefree (PadlistARRAY (padlist));
593 Safefree (padlist);
594#else
595 AvFILLp (padlist) = -1;
596 AvREAL_off (padlist);
370 SvREFCNT_dec ((SV*)padlist); 597 SvREFCNT_dec ((SV*)padlist);
598#endif
371 } 599 }
372} 600}
373 601
374static int 602static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 603coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 604{
377 AV *padlist; 605 PADLIST *padlist;
378 AV *av = (AV *)mg->mg_obj; 606 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
607 size_t len = *(size_t *)mg->mg_ptr;
379 608
380 /* casting is fun. */ 609 /* perl manages to free our internal AV and _then_ call us */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 610 if (IN_DESTRUCT)
611 return 0;
612
613 while (len--)
382 free_padlist (aTHX_ padlist); 614 free_padlist (aTHX_ padlists[len]);
383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 615
386 return 0; 616 return 0;
387} 617}
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 618
392static MGVTBL coro_cv_vtbl = { 619static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 620 0, 0, 0, 0,
394 coro_cv_free 621 coro_cv_free
395}; 622};
396 623
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
405 : 0)
406
407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
411SvSTATE_ (pTHX_ SV *coro)
412{
413 HV *stash;
414 MAGIC *mg;
415
416 if (SvROK (coro))
417 coro = SvRV (coro);
418
419 if (expect_false (SvTYPE (coro) != SVt_PVHV))
420 croak ("Coro::State object required");
421
422 stash = SvSTASH (coro);
423 if (expect_false (stash != coro_stash && stash != coro_state_stash))
424 {
425 /* very slow, but rare, check */
426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
427 croak ("Coro::State object required");
428 }
429
430 mg = CORO_MAGIC_state (coro);
431 return (struct coro *)mg->mg_ptr;
432}
433
434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439
440/* the next two functions merely cache the padlists */ 624/* the next two functions merely cache the padlists */
441static void 625ecb_inline void
442get_padlist (pTHX_ CV *cv) 626get_padlist (pTHX_ CV *cv)
443{ 627{
444 MAGIC *mg = CORO_MAGIC_cv (cv); 628 MAGIC *mg = CORO_MAGIC_cv (cv);
445 AV *av; 629 size_t *lenp;
446 630
447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 631 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 632 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
449 else 633 else
450 { 634 {
451#if CORO_PREFER_PERL_FUNCTIONS 635#if CORO_PREFER_PERL_FUNCTIONS
452 /* this is probably cleaner? but also slower! */ 636 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */ 637 /* in practise, it seems to be less stable */
454 CV *cp = Perl_cv_clone (cv); 638 CV *cp = Perl_cv_clone (aTHX_ cv);
455 CvPADLIST (cv) = CvPADLIST (cp); 639 CvPADLIST (cv) = CvPADLIST (cp);
456 CvPADLIST (cp) = 0; 640 CvPADLIST (cp) = 0;
457 SvREFCNT_dec (cp); 641 SvREFCNT_dec (cp);
458#else 642#else
459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 643 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
460#endif 644#endif
461 } 645 }
462} 646}
463 647
464static void 648ecb_inline void
465put_padlist (pTHX_ CV *cv) 649put_padlist (pTHX_ CV *cv)
466{ 650{
467 MAGIC *mg = CORO_MAGIC_cv (cv); 651 MAGIC *mg = CORO_MAGIC_cv (cv);
468 AV *av;
469 652
470 if (expect_false (!mg)) 653 if (ecb_expect_false (!mg))
654 {
471 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 655 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
656 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
657 mg->mg_len = 1; /* so mg_free frees mg_ptr */
658 }
659 else
660 Renew (mg->mg_ptr,
661 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
662 char);
472 663
473 av = (AV *)mg->mg_obj; 664 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
474
475 if (expect_false (AvFILLp (av) >= AvMAX (av)))
476 av_extend (av, AvMAX (av) + 1);
477
478 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
479} 665}
480 666
481/** load & save, init *******************************************************/ 667/** load & save, init *******************************************************/
668
669ecb_inline void
670swap_sv (SV *a, SV *b)
671{
672 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
673 SV tmp;
674
675 /* swap sv_any */
676 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
677
678 /* swap sv_flags */
679 SvFLAGS (&tmp) = SvFLAGS (a);
680 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
681 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
682
683#if PERL_VERSION_ATLEAST (5,10,0)
684 /* perl 5.10 and later complicates this _quite_ a bit, but it also
685 * is much faster, so no quarrels here. alternatively, we could
686 * sv_upgrade to avoid this.
687 */
688 {
689 /* swap sv_u */
690 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
691
692 /* if SvANY points to the head, we need to adjust the pointers,
693 * as the pointer for a still points to b, and maybe vice versa.
694 */
695 #define svany_in_head(type) \
696 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
697
698 if (svany_in_head (SvTYPE (a)))
699 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
700
701 if (svany_in_head (SvTYPE (b)))
702 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
703 }
704#endif
705}
706
707/* swap sv heads, at least logically */
708static void
709swap_svs (pTHX_ Coro__State c)
710{
711 int i;
712
713 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
714 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
715}
716
717#define SWAP_SVS(coro) \
718 if (ecb_expect_false ((coro)->swap_sv)) \
719 swap_svs (aTHX_ (coro))
720
721static void
722on_enterleave_call (pTHX_ SV *cb);
482 723
483static void 724static void
484load_perl (pTHX_ Coro__State c) 725load_perl (pTHX_ Coro__State c)
485{ 726{
486 perl_slots *slot = c->slot; 727 perl_slots *slot = c->slot;
487 c->slot = 0; 728 c->slot = 0;
488 729
489 PL_mainstack = c->mainstack; 730 PL_mainstack = c->mainstack;
490 731
491 GvSV (PL_defgv) = slot->defsv; 732#if CORO_JIT
492 GvAV (PL_defgv) = slot->defav; 733 load_perl_slots (slot);
493 GvSV (PL_errgv) = slot->errsv; 734#else
494 GvSV (irsgv) = slot->irsgv;
495
496 #define VAR(name,type) PL_ ## name = slot->name; 735 #define VARx(name,expr,type) expr = slot->name;
497 # include "state.h" 736 #include "state.h"
498 #undef VAR 737#endif
499 738
500 { 739 {
501 dSP; 740 dSP;
502 741
503 CV *cv; 742 CV *cv;
504 743
505 /* now do the ugly restore mess */ 744 /* now do the ugly restore mess */
506 while (expect_true (cv = (CV *)POPs)) 745 while (ecb_expect_true (cv = (CV *)POPs))
507 { 746 {
508 put_padlist (aTHX_ cv); /* mark this padlist as available */ 747 put_padlist (aTHX_ cv); /* mark this padlist as available */
509 CvDEPTH (cv) = PTR2IV (POPs); 748 CvDEPTH (cv) = PTR2IV (POPs);
510 CvPADLIST (cv) = (AV *)POPs; 749 CvPADLIST (cv) = (PADLIST *)POPs;
511 } 750 }
512 751
513 PUTBACK; 752 PUTBACK;
514 } 753 }
515 754
516 slf_frame = c->slf_frame; 755 slf_frame = c->slf_frame;
517 CORO_THROW = c->except; 756 CORO_THROW = c->except;
757
758 if (ecb_expect_false (enable_times))
759 {
760 if (ecb_expect_false (!times_valid))
761 coro_times_update ();
762
763 coro_times_sub (c);
764 }
765
766 if (ecb_expect_false (c->on_enter))
767 {
768 int i;
769
770 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
771 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
772 }
773
774 SWAP_SVS (c);
518} 775}
519 776
520static void 777static void
521save_perl (pTHX_ Coro__State c) 778save_perl (pTHX_ Coro__State c)
522{ 779{
780 SWAP_SVS (c);
781
782 if (ecb_expect_false (c->on_leave))
783 {
784 int i;
785
786 for (i = AvFILLp (c->on_leave); i >= 0; --i)
787 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
788 }
789
790 times_valid = 0;
791
792 if (ecb_expect_false (enable_times))
793 {
794 coro_times_update (); times_valid = 1;
795 coro_times_add (c);
796 }
797
523 c->except = CORO_THROW; 798 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 799 c->slf_frame = slf_frame;
525 800
526 { 801 {
527 dSP; 802 dSP;
… …
536 811
537 XPUSHs (Nullsv); 812 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 813 /* this loop was inspired by pp_caller */
539 for (;;) 814 for (;;)
540 { 815 {
541 while (expect_true (cxix >= 0)) 816 while (ecb_expect_true (cxix >= 0))
542 { 817 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 818 PERL_CONTEXT *cx = &ccstk[cxix--];
544 819
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 820 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 821 {
547 CV *cv = cx->blk_sub.cv; 822 CV *cv = cx->blk_sub.cv;
548 823
549 if (expect_true (CvDEPTH (cv))) 824 if (ecb_expect_true (CvDEPTH (cv)))
550 { 825 {
551 EXTEND (SP, 3); 826 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 827 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 828 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 829 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 832 get_padlist (aTHX_ cv);
558 } 833 }
559 } 834 }
560 } 835 }
561 836
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 837 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 838 break;
564 839
565 top_si = top_si->si_prev; 840 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 841 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 842 cxix = top_si->si_cxix;
… …
569 844
570 PUTBACK; 845 PUTBACK;
571 } 846 }
572 847
573 /* allocate some space on the context stack for our purposes */ 848 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 849 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 850 {
579 int i; 851 unsigned int i;
852
580 for (i = 3; i < SLOT_COUNT; ++i) 853 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 854 CXINC;
582 } 855
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 856 cxstack_ix -= SLOT_COUNT; /* undo allocation */
857 }
584 858
585 c->mainstack = PL_mainstack; 859 c->mainstack = PL_mainstack;
586 860
587 { 861 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 862 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 863
590 slot->defav = GvAV (PL_defgv); 864#if CORO_JIT
591 slot->defsv = DEFSV; 865 save_perl_slots (slot);
592 slot->errsv = ERRSV; 866#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 867 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 868 #include "state.h"
597 #undef VAR 869#endif
598 } 870 }
599} 871}
600 872
601/* 873/*
602 * allocate various perl stacks. This is almost an exact copy 874 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 875 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 876 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 877 * not usually need a lot of stackspace.
606 */ 878 */
607#if CORO_PREFER_PERL_FUNCTIONS 879#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 880# define coro_init_stacks(thx) init_stacks ()
609#else 881#else
610static void 882static void
611coro_init_stacks (pTHX) 883coro_init_stacks (pTHX)
612{ 884{
613 PL_curstackinfo = new_stackinfo(32, 8); 885 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 886 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 887 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 888 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 889
618 PL_stack_base = AvARRAY(PL_curstack); 890 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 905#endif
634 906
635 New(54,PL_scopestack,8,I32); 907 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 908 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 909 PL_scopestack_max = 8;
910#if HAS_SCOPESTACK_NAME
911 New(54,PL_scopestack_name,8,const char*);
912#endif
638 913
639 New(54,PL_savestack,24,ANY); 914 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 915 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 916 PL_savestack_max = 24;
642 917
… …
670 } 945 }
671 946
672 Safefree (PL_tmps_stack); 947 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 948 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 949 Safefree (PL_scopestack);
950#if HAS_SCOPESTACK_NAME
951 Safefree (PL_scopestack_name);
952#endif
675 Safefree (PL_savestack); 953 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 954#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 955 Safefree (PL_retstack);
678#endif 956#endif
679} 957}
680 958
959#define CORO_RSS \
960 rss += sizeof (SYM (curstackinfo)); \
961 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
962 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
963 rss += SYM (tmps_max) * sizeof (SV *); \
964 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
965 rss += SYM (scopestack_max) * sizeof (I32); \
966 rss += SYM (savestack_max) * sizeof (ANY);
967
681static size_t 968static size_t
682coro_rss (pTHX_ struct coro *coro) 969coro_rss (pTHX_ struct coro *coro)
683{ 970{
684 size_t rss = sizeof (*coro); 971 size_t rss = sizeof (*coro);
685 972
686 if (coro->mainstack) 973 if (coro->mainstack)
687 { 974 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 975 if (coro->flags & CF_RUNNING)
692 { 976 {
693 slot = &tmp_slot; 977 #define SYM(sym) PL_ ## sym
694 978 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 979 #undef SYM
698 } 980 }
699 else 981 else
700 slot = coro->slot;
701
702 if (slot)
703 { 982 {
704 rss += sizeof (slot->curstackinfo); 983 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 984 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 985 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 986 }
716 } 987 }
717 988
718 return rss; 989 return rss;
719} 990}
… …
732#endif 1003#endif
733 1004
734/* 1005/*
735 * This overrides the default magic get method of %SIG elements. 1006 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1007 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 1008 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 1009 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 1010 */
743static int 1011static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1012coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 1013{
746 const char *s = MgPV_nolen_const (mg); 1014 const char *s = MgPV_nolen_const (mg);
747 1015
748 if (*s == '_') 1016 if (*s == '_')
749 { 1017 {
750 SV **svp = 0; 1018 SV **svp = 0;
751 1019
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1020 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1021 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754 1022
755 if (svp) 1023 if (svp)
756 { 1024 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1025 SV *ssv;
1026
1027 if (!*svp)
1028 ssv = &PL_sv_undef;
1029 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1030 ssv = sv_2mortal (newRV_inc (*svp));
1031 else
1032 ssv = *svp;
1033
1034 sv_setsv (sv, ssv);
758 return 0; 1035 return 0;
759 } 1036 }
760 } 1037 }
761 1038
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1039 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763} 1040}
764 1041
765static int 1042static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1043coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1044{
768 const char *s = MgPV_nolen_const (mg); 1045 const char *s = MgPV_nolen_const (mg);
769 1046
770 if (*s == '_') 1047 if (*s == '_')
… …
784 } 1061 }
785 1062
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1063 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1064}
788 1065
789static int 1066static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1067coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1068{
792 const char *s = MgPV_nolen_const (mg); 1069 const char *s = MgPV_nolen_const (mg);
793 1070
794 if (*s == '_') 1071 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1076 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1077
801 if (svp) 1078 if (svp)
802 { 1079 {
803 SV *old = *svp; 1080 SV *old = *svp;
804 *svp = newSVsv (sv); 1081 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1082 SvREFCNT_dec (old);
806 return 0; 1083 return 0;
807 } 1084 }
808 } 1085 }
809 1086
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1098slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1099{
823 return 0; 1100 return 0;
824} 1101}
825 1102
826static UNOP coro_setup_op; 1103static int
1104slf_check_repeat (pTHX_ struct CoroSLF *frame)
1105{
1106 return 1;
1107}
827 1108
828static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1109static UNOP init_perl_op;
1110
1111ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1112init_perl (pTHX_ struct coro *coro)
830{ 1113{
831 /* 1114 /*
832 * emulate part of the perl startup here. 1115 * emulate part of the perl startup here.
833 */ 1116 */
834 coro_init_stacks (aTHX); 1117 coro_init_stacks (aTHX);
835 1118
836 PL_runops = RUNOPS_DEFAULT; 1119 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1120 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1121 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1122 PL_comppad = 0;
1123 PL_comppad_name = 0;
1124 PL_comppad_name_fill = 0;
1125 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1126 PL_curpm = 0;
841 PL_curpad = 0; 1127 PL_curpad = 0;
842 PL_localizing = 0; 1128 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1129 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1130#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1131 PL_parser = 0;
847#endif 1132#endif
1133 PL_hints = 0;
848 1134
849 /* recreate the die/warn hooks */ 1135 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1136 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1137 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1138
853 GvSV (PL_defgv) = newSV (0); 1139 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1140 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1141 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1142 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1143 GvHV (PL_hintgv) = 0;
857 PL_rs = newSVsv (GvSV (irsgv)); 1144 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1145 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1146
860 { 1147 {
861 dSP; 1148 dSP;
862 UNOP myop; 1149 UNOP myop;
863 1150
864 Zero (&myop, 1, UNOP); 1151 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1152 myop.op_next = Nullop;
1153 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1154 myop.op_flags = OPf_WANT_VOID;
867 1155
868 PUSHMARK (SP); 1156 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1157 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1158 PUTBACK;
871 PL_op = (OP *)&myop; 1159 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1160 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1161 }
875 1162
876 /* this newly created coroutine might be run on an existing cctx which most 1163 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1164 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1165 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1166 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1167 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1168 slf_frame.destroy = 0;
881 1169
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1170 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op; 1171 init_perl_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM; 1172 init_perl_op.op_type = OP_ENTERSUB;
885 coro_setup_op.op_ppaddr = pp_slf; 1173 init_perl_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */ 1174 /* no flags etc. required, as an init function won't be called */
887 1175
888 PL_op = (OP *)&coro_setup_op; 1176 PL_op = (OP *)&init_perl_op;
889 1177
890 /* copy throw, in case it was set before coro_setup */ 1178 /* copy throw, in case it was set before init_perl */
891 CORO_THROW = coro->except; 1179 CORO_THROW = coro->except;
892}
893 1180
1181 SWAP_SVS (coro);
1182
1183 if (ecb_expect_false (enable_times))
1184 {
1185 coro_times_update ();
1186 coro_times_sub (coro);
1187 }
1188}
1189
894static void 1190static void
895coro_destruct (pTHX_ struct coro *coro) 1191coro_unwind_stacks (pTHX)
896{ 1192{
897 if (!IN_DESTRUCT) 1193 if (!IN_DESTRUCT)
898 { 1194 {
899 /* restore all saved variables and stuff */ 1195 /* restore all saved variables and stuff */
900 LEAVE_SCOPE (0); 1196 LEAVE_SCOPE (0);
… …
908 POPSTACK_TO (PL_mainstack); 1204 POPSTACK_TO (PL_mainstack);
909 1205
910 /* unwind main stack */ 1206 /* unwind main stack */
911 dounwind (-1); 1207 dounwind (-1);
912 } 1208 }
1209}
913 1210
914 SvREFCNT_dec (GvSV (PL_defgv)); 1211static void
915 SvREFCNT_dec (GvAV (PL_defgv)); 1212destroy_perl (pTHX_ struct coro *coro)
916 SvREFCNT_dec (GvSV (PL_errgv)); 1213{
917 SvREFCNT_dec (PL_defoutgv); 1214 SV *svf [9];
918 SvREFCNT_dec (PL_rs);
919 SvREFCNT_dec (GvSV (irsgv));
920 1215
921 SvREFCNT_dec (PL_diehook);
922 SvREFCNT_dec (PL_warnhook);
923 1216 {
924 SvREFCNT_dec (CORO_THROW); 1217 SV *old_current = SvRV (coro_current);
1218 struct coro *current = SvSTATE (old_current);
1219
1220 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1221
1222 save_perl (aTHX_ current);
1223
1224 /* this will cause transfer_check to croak on block*/
1225 SvRV_set (coro_current, (SV *)coro->hv);
1226
1227 load_perl (aTHX_ coro);
1228
1229 coro_unwind_stacks (aTHX);
1230
1231 /* restore swapped sv's */
1232 SWAP_SVS (coro);
1233
1234 coro_destruct_stacks (aTHX);
1235
1236 /* now save some sv's to be free'd later */
1237 svf [0] = GvSV (PL_defgv);
1238 svf [1] = (SV *)GvAV (PL_defgv);
1239 svf [2] = GvSV (PL_errgv);
1240 svf [3] = (SV *)PL_defoutgv;
1241 svf [4] = PL_rs;
1242 svf [5] = GvSV (irsgv);
1243 svf [6] = (SV *)GvHV (PL_hintgv);
1244 svf [7] = PL_diehook;
1245 svf [8] = PL_warnhook;
1246 assert (9 == sizeof (svf) / sizeof (*svf));
1247
1248 SvRV_set (coro_current, old_current);
1249
1250 load_perl (aTHX_ current);
1251 }
1252
1253 {
1254 unsigned int i;
1255
1256 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1257 SvREFCNT_dec (svf [i]);
1258
925 SvREFCNT_dec (coro->saved_deffh); 1259 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->rouse_cb); 1260 SvREFCNT_dec (coro->rouse_cb);
927 1261 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1262 SvREFCNT_dec (coro->invoke_av);
1263 }
929} 1264}
930 1265
931INLINE void 1266ecb_inline void
932free_coro_mortal (pTHX) 1267free_coro_mortal (pTHX)
933{ 1268{
934 if (expect_true (coro_mortal)) 1269 if (ecb_expect_true (coro_mortal))
935 { 1270 {
936 SvREFCNT_dec (coro_mortal); 1271 SvREFCNT_dec ((SV *)coro_mortal);
937 coro_mortal = 0; 1272 coro_mortal = 0;
938 } 1273 }
939} 1274}
940 1275
941static int 1276static int
942runops_trace (pTHX) 1277runops_trace (pTHX)
943{ 1278{
944 COP *oldcop = 0; 1279 COP *oldcop = 0;
945 int oldcxix = -2; 1280 int oldcxix = -2;
946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1281
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1282 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1283 {
951 PERL_ASYNC_CHECK (); 1284 PERL_ASYNC_CHECK ();
952 1285
953 if (cctx->flags & CC_TRACE_ALL) 1286 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1287 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1288 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1289 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1290 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1291 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1292 AV *av = newAV (); /* return values */
960 SV **cb; 1293 SV **cb;
… …
997 1330
998 if (PL_curcop != &PL_compiling) 1331 if (PL_curcop != &PL_compiling)
999 { 1332 {
1000 SV **cb; 1333 SV **cb;
1001 1334
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1335 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1003 { 1336 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1337 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1338
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1339 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1340 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1341 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1342 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1343 SV *fullname = sv_2mortal (newSV (0));
1012 1344
1013 if (isGV (gv)) 1345 if (isGV (gv))
… …
1018 SAVETMPS; 1350 SAVETMPS;
1019 EXTEND (SP, 3); 1351 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1352 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1353 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1354 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1355 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1356 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1357 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1358 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1359 SPAGAIN;
1028 FREETMPS; 1360 FREETMPS;
… …
1031 } 1363 }
1032 1364
1033 oldcxix = cxstack_ix; 1365 oldcxix = cxstack_ix;
1034 } 1366 }
1035 1367
1036 if (cctx->flags & CC_TRACE_LINE) 1368 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1369 {
1038 dSP; 1370 dSP;
1039 1371
1040 PL_runops = RUNOPS_DEFAULT; 1372 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1373 ENTER;
… …
1060 1392
1061 TAINT_NOT; 1393 TAINT_NOT;
1062 return 0; 1394 return 0;
1063} 1395}
1064 1396
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame; 1397static struct CoroSLF cctx_ssl_frame;
1067 1398
1068static void 1399static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1400slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{ 1401{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0; 1402 ta->prev = 0;
1073} 1403}
1074 1404
1075static int 1405static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1406slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{ 1407{
… …
1079 1409
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1410 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081} 1411}
1082 1412
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1413/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1084static void NOINLINE 1414static void ecb_noinline
1085cctx_prepare (pTHX_ coro_cctx *cctx) 1415cctx_prepare (pTHX)
1086{ 1416{
1087 PL_top_env = &PL_start_env; 1417 PL_top_env = &PL_start_env;
1088 1418
1089 if (cctx->flags & CC_TRACE) 1419 if (cctx_current->flags & CC_TRACE)
1090 PL_runops = runops_trace; 1420 PL_runops = runops_trace;
1091 1421
1092 /* we already must be executing an SLF op, there is no other valid way 1422 /* we already must be executing an SLF op, there is no other valid way
1093 * that can lead to creation of a new cctx */ 1423 * that can lead to creation of a new cctx */
1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1424 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1425 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1096 1426
1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1427 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1098 cctx_ssl_cctx = cctx;
1099 cctx_ssl_frame = slf_frame; 1428 cctx_ssl_frame = slf_frame;
1100 1429
1101 slf_frame.prepare = slf_prepare_set_stacklevel; 1430 slf_frame.prepare = slf_prepare_set_stacklevel;
1102 slf_frame.check = slf_check_set_stacklevel; 1431 slf_frame.check = slf_check_set_stacklevel;
1103} 1432}
1104 1433
1105/* the tail of transfer: execute stuff we can only do after a transfer */ 1434/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void 1435ecb_inline void
1107transfer_tail (pTHX) 1436transfer_tail (pTHX)
1108{ 1437{
1109 free_coro_mortal (aTHX); 1438 free_coro_mortal (aTHX);
1439}
1440
1441/* try to exit the same way perl's main function would do */
1442/* we do not bother resetting the environment or other things *7
1443/* that are not, uhm, essential */
1444/* this obviously also doesn't work when perl is embedded */
1445static void ecb_noinline ecb_cold
1446perlish_exit (pTHX)
1447{
1448 int exitstatus = perl_destruct (PL_curinterp);
1449 perl_free (PL_curinterp);
1450 exit (exitstatus);
1110} 1451}
1111 1452
1112/* 1453/*
1113 * this is a _very_ stripped down perl interpreter ;) 1454 * this is a _very_ stripped down perl interpreter ;)
1114 */ 1455 */
… …
1126 /* normally we would need to skip the entersub here */ 1467 /* normally we would need to skip the entersub here */
1127 /* not doing so will re-execute it, which is exactly what we want */ 1468 /* not doing so will re-execute it, which is exactly what we want */
1128 /* PL_nop = PL_nop->op_next */ 1469 /* PL_nop = PL_nop->op_next */
1129 1470
1130 /* inject a fake subroutine call to cctx_init */ 1471 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1472 cctx_prepare (aTHX);
1132 1473
1133 /* cctx_run is the alternative tail of transfer() */ 1474 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1475 transfer_tail (aTHX);
1135 1476
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1477 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1478 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1479 perl_run (PL_curinterp);
1480 /*
1481 * Unfortunately, there is no way to get at the return values of the
1482 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1483 * runtime errors here, as this is just a random interpreter, not a thread.
1484 */
1139 1485
1140 /* 1486 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1487 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1488 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1489 * reason for perl_run to return. We try to mimic whatever perl is normally
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1490 * doing in that case. YMMV.
1145 * coroutine as Coro has no such concept
1146 */ 1491 */
1147 PL_top_env = main_top_env; 1492 perlish_exit (aTHX);
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1493 }
1150} 1494}
1151 1495
1152static coro_cctx * 1496static coro_cctx *
1153cctx_new () 1497cctx_new (void)
1154{ 1498{
1155 coro_cctx *cctx; 1499 coro_cctx *cctx;
1156 1500
1157 ++cctx_count; 1501 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx); 1502 New (0, cctx, 1, coro_cctx);
… …
1164 return cctx; 1508 return cctx;
1165} 1509}
1166 1510
1167/* create a new cctx only suitable as source */ 1511/* create a new cctx only suitable as source */
1168static coro_cctx * 1512static coro_cctx *
1169cctx_new_empty () 1513cctx_new_empty (void)
1170{ 1514{
1171 coro_cctx *cctx = cctx_new (); 1515 coro_cctx *cctx = cctx_new ();
1172 1516
1173 cctx->sptr = 0; 1517 cctx->stack.sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0); 1518 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175 1519
1176 return cctx; 1520 return cctx;
1177} 1521}
1178 1522
1179/* create a new cctx suitable as destination/running a perl interpreter */ 1523/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx * 1524static coro_cctx *
1181cctx_new_run () 1525cctx_new_run (void)
1182{ 1526{
1183 coro_cctx *cctx = cctx_new (); 1527 coro_cctx *cctx = cctx_new ();
1184 void *stack_start;
1185 size_t stack_size;
1186 1528
1187#if HAVE_MMAP 1529 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1189 /* mmap supposedly does allocate-on-write for us */
1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1191
1192 if (cctx->sptr != (void *)-1)
1193 {
1194 #if CORO_STACKGUARD
1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1196 #endif
1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1199 cctx->flags |= CC_MAPPED;
1200 } 1530 {
1201 else
1202#endif
1203 {
1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1205 New (0, cctx->sptr, cctx_stacksize, long);
1206
1207 if (!cctx->sptr)
1208 {
1209 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1531 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1210 _exit (EXIT_FAILURE); 1532 _exit (EXIT_FAILURE);
1211 }
1212
1213 stack_start = cctx->sptr;
1214 stack_size = cctx->ssize;
1215 } 1533 }
1216 1534
1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1535 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1222 1536
1223 return cctx; 1537 return cctx;
1224} 1538}
1225 1539
1226static void 1540static void
1227cctx_destroy (coro_cctx *cctx) 1541cctx_destroy (coro_cctx *cctx)
1228{ 1542{
1229 if (!cctx) 1543 if (!cctx)
1230 return; 1544 return;
1231 1545
1546 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1547
1232 --cctx_count; 1548 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1549 coro_destroy (&cctx->cctx);
1234 1550
1235 /* coro_transfer creates new, empty cctx's */ 1551 coro_stack_free (&cctx->stack);
1236 if (cctx->sptr)
1237 {
1238 #if CORO_USE_VALGRIND
1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1240 #endif
1241
1242#if HAVE_MMAP
1243 if (cctx->flags & CC_MAPPED)
1244 munmap (cctx->sptr, cctx->ssize);
1245 else
1246#endif
1247 Safefree (cctx->sptr);
1248 }
1249 1552
1250 Safefree (cctx); 1553 Safefree (cctx);
1251} 1554}
1252 1555
1253/* wether this cctx should be destructed */ 1556/* wether this cctx should be destructed */
1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1557#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1255 1558
1256static coro_cctx * 1559static coro_cctx *
1257cctx_get (pTHX) 1560cctx_get (pTHX)
1258{ 1561{
1259 while (expect_true (cctx_first)) 1562 while (ecb_expect_true (cctx_first))
1260 { 1563 {
1261 coro_cctx *cctx = cctx_first; 1564 coro_cctx *cctx = cctx_first;
1262 cctx_first = cctx->next; 1565 cctx_first = cctx->next;
1263 --cctx_idle; 1566 --cctx_idle;
1264 1567
1265 if (expect_true (!CCTX_EXPIRED (cctx))) 1568 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1266 return cctx; 1569 return cctx;
1267 1570
1268 cctx_destroy (cctx); 1571 cctx_destroy (cctx);
1269 } 1572 }
1270 1573
… …
1272} 1575}
1273 1576
1274static void 1577static void
1275cctx_put (coro_cctx *cctx) 1578cctx_put (coro_cctx *cctx)
1276{ 1579{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1580 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1278 1581
1279 /* free another cctx if overlimit */ 1582 /* free another cctx if overlimit */
1280 if (expect_false (cctx_idle >= cctx_max_idle)) 1583 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1281 { 1584 {
1282 coro_cctx *first = cctx_first; 1585 coro_cctx *first = cctx_first;
1283 cctx_first = first->next; 1586 cctx_first = first->next;
1284 --cctx_idle; 1587 --cctx_idle;
1285 1588
… …
1296static void 1599static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1600transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1601{
1299 /* TODO: throwing up here is considered harmful */ 1602 /* TODO: throwing up here is considered harmful */
1300 1603
1301 if (expect_true (prev != next)) 1604 if (ecb_expect_true (prev != next))
1302 { 1605 {
1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1606 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1607 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1305 1608
1306 if (expect_false (next->flags & CF_RUNNING)) 1609 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1308
1309 if (expect_false (next->flags & CF_DESTROYED))
1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1610 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1311 1611
1312#if !PERL_VERSION_ATLEAST (5,10,0) 1612#if !PERL_VERSION_ATLEAST (5,10,0)
1313 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1613 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1614 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif 1615#endif
1316 } 1616 }
1317} 1617}
1318 1618
1319/* always use the TRANSFER macro */ 1619/* always use the TRANSFER macro */
1320static void NOINLINE /* noinline so we have a fixed stackframe */ 1620static void ecb_noinline /* noinline so we have a fixed stackframe */
1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1621transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1322{ 1622{
1323 dSTACKLEVEL; 1623 dSTACKLEVEL;
1324 1624
1325 /* sometimes transfer is only called to set idle_sp */ 1625 /* sometimes transfer is only called to set idle_sp */
1326 if (expect_false (!next)) 1626 if (ecb_expect_false (!prev))
1327 { 1627 {
1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1628 cctx_current->idle_sp = STACKLEVEL;
1329 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1629 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1330 } 1630 }
1331 else if (expect_true (prev != next)) 1631 else if (ecb_expect_true (prev != next))
1332 { 1632 {
1333 coro_cctx *prev__cctx; 1633 coro_cctx *cctx_prev;
1334 1634
1335 if (expect_false (prev->flags & CF_NEW)) 1635 if (ecb_expect_false (prev->flags & CF_NEW))
1336 { 1636 {
1337 /* create a new empty/source context */ 1637 /* create a new empty/source context */
1338 prev->cctx = cctx_new_empty ();
1339 prev->flags &= ~CF_NEW; 1638 prev->flags &= ~CF_NEW;
1340 prev->flags |= CF_RUNNING; 1639 prev->flags |= CF_RUNNING;
1341 } 1640 }
1342 1641
1343 prev->flags &= ~CF_RUNNING; 1642 prev->flags &= ~CF_RUNNING;
1344 next->flags |= CF_RUNNING; 1643 next->flags |= CF_RUNNING;
1345 1644
1346 /* first get rid of the old state */ 1645 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1646 save_perl (aTHX_ prev);
1348 1647
1349 if (expect_false (next->flags & CF_NEW)) 1648 if (ecb_expect_false (next->flags & CF_NEW))
1350 { 1649 {
1351 /* need to start coroutine */ 1650 /* need to start coroutine */
1352 next->flags &= ~CF_NEW; 1651 next->flags &= ~CF_NEW;
1353 /* setup coroutine call */ 1652 /* setup coroutine call */
1354 coro_setup (aTHX_ next); 1653 init_perl (aTHX_ next);
1355 } 1654 }
1356 else 1655 else
1357 load_perl (aTHX_ next); 1656 load_perl (aTHX_ next);
1358 1657
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1658 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1659 if (ecb_expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1660 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1661 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1662 && !force_cctx
1366 )) 1663 ))
1367 { 1664 {
1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1665 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1666 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1667
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1668 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1669 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1670 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1671 if (ecb_expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1672 next->cctx = cctx_get (aTHX);
1378 1673
1379 cctx_put (prev__cctx); 1674 cctx_put (cctx_current);
1380 } 1675 }
1676 else
1677 prev->cctx = cctx_current;
1381 1678
1382 ++next->usecount; 1679 ++next->usecount;
1383 1680
1384 if (expect_true (!next->cctx)) 1681 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1682 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1683
1387 if (expect_false (prev__cctx != next->cctx)) 1684 next->cctx = 0;
1685
1686 if (ecb_expect_false (cctx_prev != cctx_current))
1388 { 1687 {
1389 prev__cctx->top_env = PL_top_env; 1688 cctx_prev->top_env = PL_top_env;
1390 PL_top_env = next->cctx->top_env; 1689 PL_top_env = cctx_current->top_env;
1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1690 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1392 } 1691 }
1393 1692
1394 transfer_tail (aTHX); 1693 transfer_tail (aTHX);
1395 } 1694 }
1396} 1695}
… …
1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1697#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1698#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1400 1699
1401/** high level stuff ********************************************************/ 1700/** high level stuff ********************************************************/
1402 1701
1702/* this function is actually Coro, not Coro::State, but we call it from here */
1703/* because it is convenient - but it hasn't been declared yet for that reason */
1403static int 1704static void
1705coro_call_on_destroy (pTHX_ struct coro *coro);
1706
1707static void
1404coro_state_destroy (pTHX_ struct coro *coro) 1708coro_state_destroy (pTHX_ struct coro *coro)
1405{ 1709{
1406 if (coro->flags & CF_DESTROYED) 1710 if (coro->flags & CF_ZOMBIE)
1407 return 0; 1711 return;
1408 1712
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro); 1713 slf_destroy (aTHX_ coro);
1411 1714
1412 coro->flags |= CF_DESTROYED; 1715 coro->flags |= CF_ZOMBIE;
1413 1716
1414 if (coro->flags & CF_READY) 1717 if (coro->flags & CF_READY)
1415 { 1718 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1719 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1720 /* alternative: look through all ready queues and remove the coro */
1418 --coro_nready; 1721 --coro_nready;
1419 } 1722 }
1420 else 1723 else
1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1724 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1422 1725
1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1424 {
1425 struct coro temp;
1426
1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1428
1429 save_perl (aTHX_ &temp);
1430 load_perl (aTHX_ coro);
1431
1432 coro_destruct (aTHX_ coro);
1433
1434 load_perl (aTHX_ &temp);
1435
1436 coro->slot = 0;
1437 }
1438
1439 cctx_destroy (coro->cctx);
1440 SvREFCNT_dec (coro->args);
1441
1442 if (coro->next) coro->next->prev = coro->prev; 1726 if (coro->next) coro->next->prev = coro->prev;
1443 if (coro->prev) coro->prev->next = coro->next; 1727 if (coro->prev) coro->prev->next = coro->next;
1444 if (coro == coro_first) coro_first = coro->next; 1728 if (coro == coro_first) coro_first = coro->next;
1445 1729
1446 return 1; 1730 if (coro->mainstack
1731 && coro->mainstack != main_mainstack
1732 && coro->slot
1733 && !PL_dirty)
1734 destroy_perl (aTHX_ coro);
1735
1736 cctx_destroy (coro->cctx);
1737 SvREFCNT_dec (coro->startcv);
1738 SvREFCNT_dec (coro->args);
1739 SvREFCNT_dec (coro->swap_sv);
1740 SvREFCNT_dec (CORO_THROW);
1741
1742 coro_call_on_destroy (aTHX_ coro);
1743
1744 /* more destruction mayhem in coro_state_free */
1447} 1745}
1448 1746
1449static int 1747static int
1450coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1748coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1451{ 1749{
1452 struct coro *coro = (struct coro *)mg->mg_ptr; 1750 struct coro *coro = (struct coro *)mg->mg_ptr;
1453 mg->mg_ptr = 0; 1751 mg->mg_ptr = 0;
1454 1752
1455 coro->hv = 0;
1456
1457 if (--coro->refcnt < 0)
1458 {
1459 coro_state_destroy (aTHX_ coro); 1753 coro_state_destroy (aTHX_ coro);
1754 SvREFCNT_dec (coro->on_destroy);
1755 SvREFCNT_dec (coro->status);
1756
1460 Safefree (coro); 1757 Safefree (coro);
1461 }
1462 1758
1463 return 0; 1759 return 0;
1464} 1760}
1465 1761
1466static int 1762static int ecb_cold
1467coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1763coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1468{ 1764{
1469 struct coro *coro = (struct coro *)mg->mg_ptr; 1765 /* called when perl clones the current process the slow way (windows process emulation) */
1470 1766 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1471 ++coro->refcnt; 1767 mg->mg_ptr = 0;
1768 mg->mg_virtual = 0;
1472 1769
1473 return 0; 1770 return 0;
1474} 1771}
1475 1772
1476static MGVTBL coro_state_vtbl = { 1773static MGVTBL coro_state_vtbl = {
… …
1499 1796
1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1797 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1501 TRANSFER (ta, 1); 1798 TRANSFER (ta, 1);
1502} 1799}
1503 1800
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1527/** Coro ********************************************************************/ 1801/** Coro ********************************************************************/
1528 1802
1529INLINE void 1803ecb_inline void
1530coro_enq (pTHX_ struct coro *coro) 1804coro_enq (pTHX_ struct coro *coro)
1531{ 1805{
1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1806 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1533}
1534 1807
1535INLINE SV * 1808 SvREFCNT_inc_NN (coro->hv);
1809
1810 coro->next_ready = 0;
1811 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1812 ready [1] = coro;
1813}
1814
1815ecb_inline struct coro *
1536coro_deq (pTHX) 1816coro_deq (pTHX)
1537{ 1817{
1538 int prio; 1818 int prio;
1539 1819
1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1820 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1541 if (AvFILLp (coro_ready [prio]) >= 0) 1821 {
1542 return av_shift (coro_ready [prio]); 1822 struct coro **ready = coro_ready [prio];
1823
1824 if (ready [0])
1825 {
1826 struct coro *coro = ready [0];
1827 ready [0] = coro->next_ready;
1828 return coro;
1829 }
1830 }
1543 1831
1544 return 0; 1832 return 0;
1833}
1834
1835static void
1836invoke_sv_ready_hook_helper (void)
1837{
1838 dTHX;
1839 dSP;
1840
1841 ENTER;
1842 SAVETMPS;
1843
1844 PUSHMARK (SP);
1845 PUTBACK;
1846 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1847
1848 FREETMPS;
1849 LEAVE;
1545} 1850}
1546 1851
1547static int 1852static int
1548api_ready (pTHX_ SV *coro_sv) 1853api_ready (pTHX_ SV *coro_sv)
1549{ 1854{
1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1553
1554 if (SvROK (coro_sv))
1555 coro_sv = SvRV (coro_sv);
1556
1557 coro = SvSTATE (coro_sv); 1855 struct coro *coro = SvSTATE (coro_sv);
1558 1856
1559 if (coro->flags & CF_READY) 1857 if (coro->flags & CF_READY)
1560 return 0; 1858 return 0;
1561 1859
1562 coro->flags |= CF_READY; 1860 coro->flags |= CF_READY;
1563 1861
1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro); 1862 coro_enq (aTHX_ coro);
1568 ++coro_nready;
1569 1863
1570 if (sv_hook) 1864 if (!coro_nready++)
1571 { 1865 if (coroapi.readyhook)
1572 dSP; 1866 coroapi.readyhook ();
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1587 1867
1588 return 1; 1868 return 1;
1589} 1869}
1590 1870
1591static int 1871static int
1592api_is_ready (pTHX_ SV *coro_sv) 1872api_is_ready (pTHX_ SV *coro_sv)
1593{ 1873{
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1874 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1875}
1596 1876
1597INLINE void 1877/* expects to own a reference to next->hv */
1878ecb_inline void
1598prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1879prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1880{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 next_sv = coro_deq (aTHX);
1605
1606 /* nothing to schedule: call the idle handler */
1607 if (expect_false (!next_sv))
1608 {
1609 dSP;
1610
1611 ENTER;
1612 SAVETMPS;
1613
1614 PUSHMARK (SP);
1615 PUTBACK;
1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE_hv (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 break;
1635 }
1636
1637 /* free this only after the transfer */
1638 prev_sv = SvRV (coro_current); 1881 SV *prev_sv = SvRV (coro_current);
1882
1639 ta->prev = SvSTATE_hv (prev_sv); 1883 ta->prev = SvSTATE_hv (prev_sv);
1884 ta->next = next;
1885
1640 TRANSFER_CHECK (*ta); 1886 TRANSFER_CHECK (*ta);
1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1887
1642 ta->next->flags &= ~CF_READY;
1643 SvRV_set (coro_current, next_sv); 1888 SvRV_set (coro_current, (SV *)next->hv);
1644 1889
1645 free_coro_mortal (aTHX); 1890 free_coro_mortal (aTHX);
1646 coro_mortal = prev_sv; 1891 coro_mortal = prev_sv;
1647} 1892}
1648 1893
1649INLINE void 1894static void
1895prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1896{
1897 for (;;)
1898 {
1899 struct coro *next = coro_deq (aTHX);
1900
1901 if (ecb_expect_true (next))
1902 {
1903 /* cannot transfer to destroyed coros, skip and look for next */
1904 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1905 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1906 else
1907 {
1908 next->flags &= ~CF_READY;
1909 --coro_nready;
1910
1911 prepare_schedule_to (aTHX_ ta, next);
1912 break;
1913 }
1914 }
1915 else
1916 {
1917 /* nothing to schedule: call the idle handler */
1918 if (SvROK (sv_idle)
1919 && SvOBJECT (SvRV (sv_idle)))
1920 {
1921 if (SvRV (sv_idle) == SvRV (coro_current))
1922 {
1923 require_pv ("Carp");
1924
1925 {
1926 dSP;
1927
1928 ENTER;
1929 SAVETMPS;
1930
1931 PUSHMARK (SP);
1932 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1933 PUTBACK;
1934 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1935
1936 FREETMPS;
1937 LEAVE;
1938 }
1939 }
1940
1941 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1942 api_ready (aTHX_ SvRV (sv_idle));
1943 --coro_nready;
1944 }
1945 else
1946 {
1947 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1948 dSP;
1949
1950 ENTER;
1951 SAVETMPS;
1952
1953 PUSHMARK (SP);
1954 PUTBACK;
1955 call_sv (sv_idle, G_VOID | G_DISCARD);
1956
1957 FREETMPS;
1958 LEAVE;
1959 }
1960 }
1961 }
1962}
1963
1964ecb_inline void
1650prepare_cede (pTHX_ struct coro_transfer_args *ta) 1965prepare_cede (pTHX_ struct coro_transfer_args *ta)
1651{ 1966{
1652 api_ready (aTHX_ coro_current); 1967 api_ready (aTHX_ coro_current);
1653 prepare_schedule (aTHX_ ta); 1968 prepare_schedule (aTHX_ ta);
1654} 1969}
1655 1970
1656INLINE void 1971ecb_inline void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1972prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{ 1973{
1659 SV *prev = SvRV (coro_current); 1974 SV *prev = SvRV (coro_current);
1660 1975
1661 if (coro_nready) 1976 if (coro_nready)
… …
1674 1989
1675 prepare_schedule (aTHX_ &ta); 1990 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1677} 1992}
1678 1993
1994static void
1995api_schedule_to (pTHX_ SV *coro_sv)
1996{
1997 struct coro_transfer_args ta;
1998 struct coro *next = SvSTATE (coro_sv);
1999
2000 SvREFCNT_inc_NN (coro_sv);
2001 prepare_schedule_to (aTHX_ &ta, next);
2002}
2003
1679static int 2004static int
1680api_cede (pTHX) 2005api_cede (pTHX)
1681{ 2006{
1682 struct coro_transfer_args ta; 2007 struct coro_transfer_args ta;
1683 2008
1684 prepare_cede (aTHX_ &ta); 2009 prepare_cede (aTHX_ &ta);
1685 2010
1686 if (expect_true (ta.prev != ta.next)) 2011 if (ecb_expect_true (ta.prev != ta.next))
1687 { 2012 {
1688 TRANSFER (ta, 1); 2013 TRANSFER (ta, 1);
1689 return 1; 2014 return 1;
1690 } 2015 }
1691 else 2016 else
… …
1710static void 2035static void
1711api_trace (pTHX_ SV *coro_sv, int flags) 2036api_trace (pTHX_ SV *coro_sv, int flags)
1712{ 2037{
1713 struct coro *coro = SvSTATE (coro_sv); 2038 struct coro *coro = SvSTATE (coro_sv);
1714 2039
2040 if (coro->flags & CF_RUNNING)
2041 croak ("cannot enable tracing on a running coroutine, caught");
2042
1715 if (flags & CC_TRACE) 2043 if (flags & CC_TRACE)
1716 { 2044 {
1717 if (!coro->cctx) 2045 if (!coro->cctx)
1718 coro->cctx = cctx_new_run (); 2046 coro->cctx = cctx_new_run ();
1719 else if (!(coro->cctx->flags & CC_TRACE)) 2047 else if (!(coro->cctx->flags & CC_TRACE))
1720 croak ("cannot enable tracing on coroutine with custom stack,"); 2048 croak ("cannot enable tracing on coroutine with custom stack, caught");
1721 2049
1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2050 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1723 } 2051 }
1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2052 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1725 { 2053 {
… …
1730 else 2058 else
1731 coro->slot->runops = RUNOPS_DEFAULT; 2059 coro->slot->runops = RUNOPS_DEFAULT;
1732 } 2060 }
1733} 2061}
1734 2062
2063static void
2064coro_push_av (pTHX_ AV *av, I32 gimme_v)
2065{
2066 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2067 {
2068 dSP;
2069
2070 if (gimme_v == G_SCALAR)
2071 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2072 else
2073 {
2074 int i;
2075 EXTEND (SP, AvFILLp (av) + 1);
2076
2077 for (i = 0; i <= AvFILLp (av); ++i)
2078 PUSHs (AvARRAY (av)[i]);
2079 }
2080
2081 PUTBACK;
2082 }
2083}
2084
2085static void
2086coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2087{
2088 if (!coro->on_destroy)
2089 coro->on_destroy = newAV ();
2090
2091 av_push (coro->on_destroy, cb);
2092}
2093
2094static void
2095slf_destroy_join (pTHX_ struct CoroSLF *frame)
2096{
2097 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2098}
2099
2100static int
2101slf_check_join (pTHX_ struct CoroSLF *frame)
2102{
2103 struct coro *coro = (struct coro *)frame->data;
2104
2105 if (!coro->status)
2106 return 1;
2107
2108 frame->destroy = 0;
2109
2110 coro_push_av (aTHX_ coro->status, GIMME_V);
2111
2112 SvREFCNT_dec ((SV *)coro->hv);
2113
2114 return 0;
2115}
2116
2117static void
2118slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2119{
2120 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2121
2122 if (items > 1)
2123 croak ("join called with too many arguments");
2124
2125 if (coro->status)
2126 frame->prepare = prepare_nop;
2127 else
2128 {
2129 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2130 frame->prepare = prepare_schedule;
2131 }
2132
2133 frame->check = slf_check_join;
2134 frame->destroy = slf_destroy_join;
2135 frame->data = (void *)coro;
2136 SvREFCNT_inc (coro->hv);
2137}
2138
2139static void
2140coro_call_on_destroy (pTHX_ struct coro *coro)
2141{
2142 AV *od = coro->on_destroy;
2143
2144 if (!od)
2145 return;
2146
2147 coro->on_destroy = 0;
2148 sv_2mortal ((SV *)od);
2149
2150 while (AvFILLp (od) >= 0)
2151 {
2152 SV *cb = sv_2mortal (av_pop (od));
2153
2154 /* coro hv's (and only hv's at the moment) are supported as well */
2155 if (SvSTATEhv_p (aTHX_ cb))
2156 api_ready (aTHX_ cb);
2157 else
2158 {
2159 dSP; /* don't disturb outer sp */
2160 PUSHMARK (SP);
2161
2162 if (coro->status)
2163 {
2164 PUTBACK;
2165 coro_push_av (aTHX_ coro->status, G_ARRAY);
2166 SPAGAIN;
2167 }
2168
2169 PUTBACK;
2170 call_sv (cb, G_VOID | G_DISCARD);
2171 }
2172 }
2173}
2174
2175static void
2176coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2177{
2178 AV *av;
2179
2180 if (coro->status)
2181 {
2182 av = coro->status;
2183 av_clear (av);
2184 }
2185 else
2186 av = coro->status = newAV ();
2187
2188 /* items are actually not so common, so optimise for this case */
2189 if (items)
2190 {
2191 int i;
2192
2193 av_extend (av, items - 1);
2194
2195 for (i = 0; i < items; ++i)
2196 av_push (av, SvREFCNT_inc_NN (arg [i]));
2197 }
2198}
2199
2200static void
2201slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2202{
2203 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2204 api_ready (aTHX_ sv_manager);
2205
2206 frame->prepare = prepare_schedule;
2207 frame->check = slf_check_repeat;
2208
2209 /* as a minor optimisation, we could unwind all stacks here */
2210 /* but that puts extra pressure on pp_slf, and is not worth much */
2211 /*coro_unwind_stacks (aTHX);*/
2212}
2213
2214static void
2215slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2216{
2217 HV *coro_hv = (HV *)SvRV (coro_current);
2218
2219 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2220 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2221}
2222
2223static void
2224slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2225{
2226 HV *coro_hv;
2227 struct coro *coro;
2228
2229 if (items <= 0)
2230 croak ("Coro::cancel called without coro object,");
2231
2232 coro = SvSTATE (arg [0]);
2233 coro_hv = coro->hv;
2234
2235 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2236
2237 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2238 {
2239 /* coro currently busy cancelling something, so just notify it */
2240 coro->slf_frame.data = (void *)coro;
2241
2242 frame->prepare = prepare_nop;
2243 frame->check = slf_check_nop;
2244 }
2245 else if (coro_hv == (HV *)SvRV (coro_current))
2246 {
2247 /* cancelling the current coro is allowed, and equals terminate */
2248 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2249 }
2250 else
2251 {
2252 struct coro *self = SvSTATE_current;
2253
2254 /* otherwise we cancel directly, purely for speed reasons
2255 * unfortunately, this requires some magic trickery, as
2256 * somebody else could cancel us, so we have to fight the cancellation.
2257 * this is ugly, and hopefully fully worth the extra speed.
2258 * besides, I can't get the slow-but-safe version working...
2259 */
2260 slf_frame.data = 0;
2261 self->flags |= CF_NOCANCEL;
2262 coro_state_destroy (aTHX_ coro);
2263 self->flags &= ~CF_NOCANCEL;
2264
2265 if (slf_frame.data)
2266 {
2267 /* while we were busy we have been cancelled, so terminate */
2268 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2269 }
2270 else
2271 {
2272 frame->prepare = prepare_nop;
2273 frame->check = slf_check_nop;
2274 }
2275 }
2276}
2277
2278static int
2279slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2280{
2281 frame->prepare = 0;
2282 coro_unwind_stacks (aTHX);
2283
2284 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2285
2286 return 1;
2287}
2288
2289static int
2290safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2291{
2292 if (coro->cctx)
2293 croak ("coro inside C callback, unable to cancel at this time, caught");
2294
2295 if (coro->flags & CF_NEW)
2296 {
2297 coro_set_status (aTHX_ coro, arg, items);
2298 coro_state_destroy (aTHX_ coro);
2299 }
2300 else
2301 {
2302 if (!coro->slf_frame.prepare)
2303 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2304
2305 slf_destroy (aTHX_ coro);
2306
2307 coro_set_status (aTHX_ coro, arg, items);
2308 coro->slf_frame.prepare = prepare_nop;
2309 coro->slf_frame.check = slf_check_safe_cancel;
2310
2311 api_ready (aTHX_ (SV *)coro->hv);
2312 }
2313
2314 return 1;
2315}
2316
2317/*****************************************************************************/
2318/* async pool handler */
2319
2320static int
2321slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2322{
2323 HV *hv = (HV *)SvRV (coro_current);
2324 struct coro *coro = (struct coro *)frame->data;
2325
2326 if (!coro->invoke_cb)
2327 return 1; /* loop till we have invoke */
2328 else
2329 {
2330 hv_store (hv, "desc", sizeof ("desc") - 1,
2331 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2332
2333 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2334
2335 {
2336 dSP;
2337 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2338 PUTBACK;
2339 }
2340
2341 SvREFCNT_dec (GvAV (PL_defgv));
2342 GvAV (PL_defgv) = coro->invoke_av;
2343 coro->invoke_av = 0;
2344
2345 return 0;
2346 }
2347}
2348
2349static void
2350slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2351{
2352 HV *hv = (HV *)SvRV (coro_current);
2353 struct coro *coro = SvSTATE_hv ((SV *)hv);
2354
2355 if (ecb_expect_true (coro->saved_deffh))
2356 {
2357 /* subsequent iteration */
2358 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2359 coro->saved_deffh = 0;
2360
2361 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2362 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2363 {
2364 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2365 return;
2366 }
2367 else
2368 {
2369 av_clear (GvAV (PL_defgv));
2370 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2371
2372 coro->prio = 0;
2373
2374 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2375 api_trace (aTHX_ coro_current, 0);
2376
2377 frame->prepare = prepare_schedule;
2378 av_push (av_async_pool, SvREFCNT_inc (hv));
2379 }
2380 }
2381 else
2382 {
2383 /* first iteration, simply fall through */
2384 frame->prepare = prepare_nop;
2385 }
2386
2387 frame->check = slf_check_pool_handler;
2388 frame->data = (void *)coro;
2389}
2390
1735/*****************************************************************************/ 2391/*****************************************************************************/
1736/* rouse callback */ 2392/* rouse callback */
1737 2393
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2394#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739 2395
1740static void 2396static void
1741coro_rouse_callback (pTHX_ CV *cv) 2397coro_rouse_callback (pTHX_ CV *cv)
1742{ 2398{
1743 dXSARGS; 2399 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG; 2400 SV *data = (SV *)S_GENSUB_ARG;
1745 2401
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2402 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 { 2403 {
1748 /* first call, set args */ 2404 /* first call, set args */
1749 int i; 2405 SV *coro = SvRV (data);
1750 AV *av = newAV (); 2406 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752 2407
1753 SvRV_set (data, (SV *)av); 2408 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756 2409
1757 /* better take a full copy of the arguments */ 2410 /* better take a full copy of the arguments */
1758 while (items--) 2411 while (items--)
1759 av_store (av, items, newSVsv (ST (items))); 2412 av_store (av, items, newSVsv (ST (items)));
2413
2414 api_ready (aTHX_ coro);
2415 SvREFCNT_dec (coro);
1760 } 2416 }
1761 2417
1762 XSRETURN_EMPTY; 2418 XSRETURN_EMPTY;
1763} 2419}
1764 2420
1765static int 2421static int
1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2422slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1767{ 2423{
1768 SV *data = (SV *)frame->data; 2424 SV *data = (SV *)frame->data;
1769 2425
1770 if (CORO_THROW) 2426 if (CORO_THROW)
1771 return 0; 2427 return 0;
1772 2428
1773 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2429 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1; 2430 return 1;
… …
1781 2437
1782 EXTEND (SP, AvFILLp (av) + 1); 2438 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i) 2439 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2440 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785 2441
1786 /* we have stolen the elements, so ste length to zero and free */ 2442 /* we have stolen the elements, so set length to zero and free */
1787 AvFILLp (av) = -1; 2443 AvFILLp (av) = -1;
1788 av_undef (av); 2444 av_undef (av);
1789 2445
1790 PUTBACK; 2446 PUTBACK;
1791 } 2447 }
… …
1810 cb = sv_2mortal (coro->rouse_cb); 2466 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0; 2467 coro->rouse_cb = 0;
1812 } 2468 }
1813 2469
1814 if (!SvROK (cb) 2470 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV 2471 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2472 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,"); 2473 croak ("Coro::rouse_wait called with illegal callback argument,");
1818 2474
1819 { 2475 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2476 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG; 2477 SV *data = (SV *)S_GENSUB_ARG;
1822 2478
1823 frame->data = (void *)data; 2479 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2480 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait; 2481 frame->check = slf_check_rouse_wait;
1826 } 2482 }
… …
1830coro_new_rouse_cb (pTHX) 2486coro_new_rouse_cb (pTHX)
1831{ 2487{
1832 HV *hv = (HV *)SvRV (coro_current); 2488 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv); 2489 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv); 2490 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2491 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1836 2492
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2493 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */ 2494 SvREFCNT_dec (data); /* magicext increases the refcount */
1839 2495
1840 SvREFCNT_dec (coro->rouse_cb); 2496 SvREFCNT_dec (coro->rouse_cb);
… …
1898 frame->prepare = prepare_schedule; 2554 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop; 2555 frame->check = slf_check_nop;
1900} 2556}
1901 2557
1902static void 2558static void
2559slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2560{
2561 struct coro *next = (struct coro *)slf_frame.data;
2562
2563 SvREFCNT_inc_NN (next->hv);
2564 prepare_schedule_to (aTHX_ ta, next);
2565}
2566
2567static void
2568slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2569{
2570 if (!items)
2571 croak ("Coro::schedule_to expects a coroutine argument, caught");
2572
2573 frame->data = (void *)SvSTATE (arg [0]);
2574 frame->prepare = slf_prepare_schedule_to;
2575 frame->check = slf_check_nop;
2576}
2577
2578static void
2579slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2580{
2581 api_ready (aTHX_ SvRV (coro_current));
2582
2583 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2584}
2585
2586static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2587slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{ 2588{
1905 frame->prepare = prepare_cede; 2589 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
1907} 2591}
… …
1909static void 2593static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2594slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{ 2595{
1912 frame->prepare = prepare_cede_notself; 2596 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop; 2597 frame->check = slf_check_nop;
2598}
2599
2600/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2601static void
2602slf_destroy (pTHX_ struct coro *coro)
2603{
2604 /* this callback is reserved for slf functions needing to do cleanup */
2605 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2606 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2607
2608 /*
2609 * The on_destroy above most likely is from an SLF call.
2610 * Since by definition the SLF call will not finish when we destroy
2611 * the coro, we will have to force-finish it here, otherwise
2612 * cleanup functions cannot call SLF functions.
2613 */
2614 coro->slf_frame.prepare = 0;
1914} 2615}
1915 2616
1916/* 2617/*
1917 * these not obviously related functions are all rolled into one 2618 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same 2619 * function to increase chances that they all will call transfer with the same
… …
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2626 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926 2627
1927 /* set up the slf frame, unless it has already been set-up */ 2628 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */ 2629 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */ 2630 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare)) 2631 if (ecb_expect_true (!slf_frame.prepare))
1931 { 2632 {
1932 /* first iteration */ 2633 /* first iteration */
1933 dSP; 2634 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1; 2635 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */ 2636 int items = SP - arg; /* args without function object */
… …
1976 while (slf_frame.check (aTHX_ &slf_frame)); 2677 while (slf_frame.check (aTHX_ &slf_frame));
1977 2678
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2679 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979 2680
1980 /* exception handling */ 2681 /* exception handling */
1981 if (expect_false (CORO_THROW)) 2682 if (ecb_expect_false (CORO_THROW))
1982 { 2683 {
1983 SV *exception = sv_2mortal (CORO_THROW); 2684 SV *exception = sv_2mortal (CORO_THROW);
1984 2685
1985 CORO_THROW = 0; 2686 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception); 2687 sv_setsv (ERRSV, exception);
1987 croak (0); 2688 croak (0);
1988 } 2689 }
1989 2690
1990 /* return value handling - mostly like entersub */ 2691 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */ 2692 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR) 2693 if (GIMME_V == G_SCALAR
2694 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1993 { 2695 {
1994 dSP; 2696 dSP;
1995 SV **bot = PL_stack_base + checkmark; 2697 SV **bot = PL_stack_base + checkmark;
1996 2698
1997 if (sp == bot) /* too few, push undef */ 2699 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef; 2700 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */ 2701 else /* too many, take last one */
2000 bot [1] = *sp; 2702 bot [1] = *sp;
2001 2703
2002 SP = bot + 1; 2704 SP = bot + 1;
2003 2705
2004 PUTBACK; 2706 PUTBACK;
… …
2037 if (PL_op->op_flags & OPf_STACKED) 2739 if (PL_op->op_flags & OPf_STACKED)
2038 { 2740 {
2039 if (items > slf_arga) 2741 if (items > slf_arga)
2040 { 2742 {
2041 slf_arga = items; 2743 slf_arga = items;
2042 free (slf_argv); 2744 Safefree (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *)); 2745 New (0, slf_argv, slf_arga, SV *);
2044 } 2746 }
2045 2747
2046 slf_argc = items; 2748 slf_argc = items;
2047 2749
2048 for (i = 0; i < items; ++i) 2750 for (i = 0; i < items; ++i)
… …
2050 } 2752 }
2051 else 2753 else
2052 slf_argc = 0; 2754 slf_argc = 0;
2053 2755
2054 PL_op->op_ppaddr = pp_slf; 2756 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2757 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2056 2758
2057 PL_op = (OP *)&slf_restore; 2759 PL_op = (OP *)&slf_restore;
2760}
2761
2762/*****************************************************************************/
2763/* dynamic wind */
2764
2765static void
2766on_enterleave_call (pTHX_ SV *cb)
2767{
2768 dSP;
2769
2770 PUSHSTACK;
2771
2772 PUSHMARK (SP);
2773 PUTBACK;
2774 call_sv (cb, G_VOID | G_DISCARD);
2775 SPAGAIN;
2776
2777 POPSTACK;
2778}
2779
2780static SV *
2781coro_avp_pop_and_free (pTHX_ AV **avp)
2782{
2783 AV *av = *avp;
2784 SV *res = av_pop (av);
2785
2786 if (AvFILLp (av) < 0)
2787 {
2788 *avp = 0;
2789 SvREFCNT_dec (av);
2790 }
2791
2792 return res;
2793}
2794
2795static void
2796coro_pop_on_enter (pTHX_ void *coro)
2797{
2798 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2799 SvREFCNT_dec (cb);
2800}
2801
2802static void
2803coro_pop_on_leave (pTHX_ void *coro)
2804{
2805 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2806 on_enterleave_call (aTHX_ sv_2mortal (cb));
2058} 2807}
2059 2808
2060/*****************************************************************************/ 2809/*****************************************************************************/
2061/* PerlIO::cede */ 2810/* PerlIO::cede */
2062 2811
… …
2064{ 2813{
2065 PerlIOBuf base; 2814 PerlIOBuf base;
2066 NV next, every; 2815 NV next, every;
2067} PerlIOCede; 2816} PerlIOCede;
2068 2817
2069static IV 2818static IV ecb_cold
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2819PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{ 2820{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2821 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073 2822
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2823 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every; 2824 self->next = nvtime () + self->every;
2076 2825
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2826 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078} 2827}
2079 2828
2080static SV * 2829static SV * ecb_cold
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2830PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{ 2831{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2832 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084 2833
2085 return newSVnv (self->every); 2834 return newSVnv (self->every);
… …
2136/* Coro::Semaphore & Coro::Signal */ 2885/* Coro::Semaphore & Coro::Signal */
2137 2886
2138static SV * 2887static SV *
2139coro_waitarray_new (pTHX_ int count) 2888coro_waitarray_new (pTHX_ int count)
2140{ 2889{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2890 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV (); 2891 AV *av = newAV ();
2143 SV **ary; 2892 SV **ary;
2144 2893
2145 /* unfortunately, building manually saves memory */ 2894 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *); 2895 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary; 2896 AvALLOC (av) = ary;
2897#if PERL_VERSION_ATLEAST (5,10,0)
2148 AvARRAY (av) = ary; 2898 AvARRAY (av) = ary;
2899#else
2900 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2901 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2902 SvPVX ((SV *)av) = (char *)ary;
2903#endif
2149 AvMAX (av) = 1; 2904 AvMAX (av) = 1;
2150 AvFILLp (av) = 0; 2905 AvFILLp (av) = 0;
2151 ary [0] = newSViv (count); 2906 ary [0] = newSViv (count);
2152 2907
2153 return newRV_noinc ((SV *)av); 2908 return newRV_noinc ((SV *)av);
… …
2173 AvARRAY (av)[0] = AvARRAY (av)[1]; 2928 AvARRAY (av)[0] = AvARRAY (av)[1];
2174 AvARRAY (av)[1] = count_sv; 2929 AvARRAY (av)[1] = count_sv;
2175 cb = av_shift (av); 2930 cb = av_shift (av);
2176 2931
2177 if (SvOBJECT (cb)) 2932 if (SvOBJECT (cb))
2933 {
2178 api_ready (aTHX_ cb); 2934 api_ready (aTHX_ cb);
2179 else 2935 --count;
2180 croak ("callbacks not yet supported"); 2936 }
2937 else if (SvTYPE (cb) == SVt_PVCV)
2938 {
2939 dSP;
2940 PUSHMARK (SP);
2941 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2942 PUTBACK;
2943 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2944 }
2181 2945
2182 SvREFCNT_dec (cb); 2946 SvREFCNT_dec (cb);
2183
2184 --count;
2185 } 2947 }
2186} 2948}
2187 2949
2188static void 2950static void
2189coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2951coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2190{ 2952{
2191 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2953 /* call $sem->adjust (0) to possibly wake up some other waiters */
2192 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2954 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2193} 2955}
2194 2956
2195static int 2957static int
2196slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2958slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2197{ 2959{
2198 AV *av = (AV *)frame->data; 2960 AV *av = (AV *)frame->data;
2199 SV *count_sv = AvARRAY (av)[0]; 2961 SV *count_sv = AvARRAY (av)[0];
2962 SV *coro_hv = SvRV (coro_current);
2200 2963
2201 /* if we are about to throw, don't actually acquire the lock, just throw */ 2964 /* if we are about to throw, don't actually acquire the lock, just throw */
2202 if (CORO_THROW) 2965 if (CORO_THROW)
2203 return 0; 2966 return 0;
2204 else if (SvIVX (count_sv) > 0) 2967 else if (SvIVX (count_sv) > 0)
2205 { 2968 {
2206 SvSTATE_current->on_destroy = 0; 2969 frame->destroy = 0;
2207 2970
2208 if (acquire) 2971 if (acquire)
2209 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2972 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2210 else 2973 else
2211 coro_semaphore_adjust (aTHX_ av, 0); 2974 coro_semaphore_adjust (aTHX_ av, 0);
… …
2216 { 2979 {
2217 int i; 2980 int i;
2218 /* if we were woken up but can't down, we look through the whole */ 2981 /* if we were woken up but can't down, we look through the whole */
2219 /* waiters list and only add us if we aren't in there already */ 2982 /* waiters list and only add us if we aren't in there already */
2220 /* this avoids some degenerate memory usage cases */ 2983 /* this avoids some degenerate memory usage cases */
2221 2984 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2222 for (i = 1; i <= AvFILLp (av); ++i)
2223 if (AvARRAY (av)[i] == SvRV (coro_current)) 2985 if (AvARRAY (av)[i] == coro_hv)
2224 return 1; 2986 return 1;
2225 2987
2226 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2988 av_push (av, SvREFCNT_inc (coro_hv));
2227 return 1; 2989 return 1;
2228 } 2990 }
2229} 2991}
2230 2992
2231static int 2993static int
… …
2254 { 3016 {
2255 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3017 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2256 3018
2257 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3019 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2258 frame->prepare = prepare_schedule; 3020 frame->prepare = prepare_schedule;
2259
2260 /* to avoid race conditions when a woken-up coro gets terminated */ 3021 /* to avoid race conditions when a woken-up coro gets terminated */
2261 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3022 /* we arrange for a temporary on_destroy that calls adjust (0) */
2262 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3023 frame->destroy = coro_semaphore_destroy;
2263 } 3024 }
2264} 3025}
2265 3026
2266static void 3027static void
2267slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3028slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2271} 3032}
2272 3033
2273static void 3034static void
2274slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3035slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2275{ 3036{
3037 if (items >= 2)
3038 {
3039 /* callback form */
3040 AV *av = (AV *)SvRV (arg [0]);
3041 SV *cb_cv = s_get_cv_croak (arg [1]);
3042
3043 av_push (av, SvREFCNT_inc_NN (cb_cv));
3044
3045 if (SvIVX (AvARRAY (av)[0]) > 0)
3046 coro_semaphore_adjust (aTHX_ av, 0);
3047
3048 frame->prepare = prepare_nop;
3049 frame->check = slf_check_nop;
3050 }
3051 else
3052 {
2276 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 3053 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2277 frame->check = slf_check_semaphore_wait; 3054 frame->check = slf_check_semaphore_wait;
3055 }
2278} 3056}
2279 3057
2280/* signal */ 3058/* signal */
2281 3059
2282static void 3060static void
… …
2294 AvARRAY (av)[0] = AvARRAY (av)[1]; 3072 AvARRAY (av)[0] = AvARRAY (av)[1];
2295 AvARRAY (av)[1] = cb; 3073 AvARRAY (av)[1] = cb;
2296 3074
2297 cb = av_shift (av); 3075 cb = av_shift (av);
2298 3076
3077 if (SvTYPE (cb) == SVt_PVCV)
3078 {
3079 dSP;
3080 PUSHMARK (SP);
3081 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3082 PUTBACK;
3083 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3084 }
3085 else
3086 {
2299 api_ready (aTHX_ cb); 3087 api_ready (aTHX_ cb);
2300 sv_setiv (cb, 0); /* signal waiter */ 3088 sv_setiv (cb, 0); /* signal waiter */
3089 }
3090
2301 SvREFCNT_dec (cb); 3091 SvREFCNT_dec (cb);
2302 3092
2303 --count; 3093 --count;
2304 } 3094 }
2305} 3095}
… …
2314static void 3104static void
2315slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3105slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2316{ 3106{
2317 AV *av = (AV *)SvRV (arg [0]); 3107 AV *av = (AV *)SvRV (arg [0]);
2318 3108
3109 if (items >= 2)
3110 {
3111 SV *cb_cv = s_get_cv_croak (arg [1]);
3112 av_push (av, SvREFCNT_inc_NN (cb_cv));
3113
2319 if (SvIVX (AvARRAY (av)[0])) 3114 if (SvIVX (AvARRAY (av)[0]))
3115 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3116
3117 frame->prepare = prepare_nop;
3118 frame->check = slf_check_nop;
3119 }
3120 else if (SvIVX (AvARRAY (av)[0]))
2320 { 3121 {
2321 SvIVX (AvARRAY (av)[0]) = 0; 3122 SvIVX (AvARRAY (av)[0]) = 0;
2322 frame->prepare = prepare_nop; 3123 frame->prepare = prepare_nop;
2323 frame->check = slf_check_nop; 3124 frame->check = slf_check_nop;
2324 } 3125 }
2325 else 3126 else
2326 { 3127 {
2327 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3128 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2328 3129
2329 av_push (av, waiter); 3130 av_push (av, waiter);
2330 3131
2331 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3132 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2332 frame->prepare = prepare_schedule; 3133 frame->prepare = prepare_schedule;
… …
2350 3151
2351static void 3152static void
2352coro_aio_callback (pTHX_ CV *cv) 3153coro_aio_callback (pTHX_ CV *cv)
2353{ 3154{
2354 dXSARGS; 3155 dXSARGS;
2355 AV *state = (AV *)GENSUB_ARG; 3156 AV *state = (AV *)S_GENSUB_ARG;
2356 SV *coro = av_pop (state); 3157 SV *coro = av_pop (state);
2357 SV *data_sv = newSV (sizeof (struct io_state)); 3158 SV *data_sv = newSV (sizeof (struct io_state));
2358 3159
2359 av_extend (state, items); 3160 av_extend (state, items - 1);
2360 3161
2361 sv_upgrade (data_sv, SVt_PV); 3162 sv_upgrade (data_sv, SVt_PV);
2362 SvCUR_set (data_sv, sizeof (struct io_state)); 3163 SvCUR_set (data_sv, sizeof (struct io_state));
2363 SvPOK_only (data_sv); 3164 SvPOK_only (data_sv);
2364 3165
… …
2396 /* it quickly returns */ 3197 /* it quickly returns */
2397 if (CORO_THROW) 3198 if (CORO_THROW)
2398 return 0; 3199 return 0;
2399 3200
2400 /* one element that is an RV? repeat! */ 3201 /* one element that is an RV? repeat! */
2401 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3202 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2402 return 1; 3203 return 1;
2403 3204
2404 /* restore status */ 3205 /* restore status */
2405 { 3206 {
2406 SV *data_sv = av_pop (state); 3207 SV *data_sv = av_pop (state);
… …
2445 dSP; 3246 dSP;
2446 3247
2447 static SV *prio_cv; 3248 static SV *prio_cv;
2448 static SV *prio_sv; 3249 static SV *prio_sv;
2449 3250
2450 if (expect_false (!prio_cv)) 3251 if (ecb_expect_false (!prio_cv))
2451 { 3252 {
2452 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3253 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2453 prio_sv = newSViv (0); 3254 prio_sv = newSViv (0);
2454 } 3255 }
2455 3256
… …
2474 3275
2475 for (i = 0; i < items; ++i) 3276 for (i = 0; i < items; ++i)
2476 PUSHs (arg [i]); 3277 PUSHs (arg [i]);
2477 3278
2478 /* now push the callback closure */ 3279 /* now push the callback closure */
2479 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3280 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2480 3281
2481 /* now call the AIO function - we assume our request is uncancelable */ 3282 /* now call the AIO function - we assume our request is uncancelable */
2482 PUTBACK; 3283 PUTBACK;
2483 call_sv ((SV *)req, G_VOID | G_DISCARD); 3284 call_sv ((SV *)req, G_VOID | G_DISCARD);
2484 } 3285 }
2485 3286
2486 /* now that the requets is going, we loop toll we have a result */ 3287 /* now that the request is going, we loop till we have a result */
2487 frame->data = (void *)state; 3288 frame->data = (void *)state;
2488 frame->prepare = prepare_schedule; 3289 frame->prepare = prepare_schedule;
2489 frame->check = slf_check_aio_req; 3290 frame->check = slf_check_aio_req;
2490} 3291}
2491 3292
… …
2498 3299
2499 XSRETURN_EMPTY; 3300 XSRETURN_EMPTY;
2500} 3301}
2501 3302
2502/*****************************************************************************/ 3303/*****************************************************************************/
3304
3305#if CORO_CLONE
3306# include "clone.c"
3307#endif
3308
3309/*****************************************************************************/
3310
3311static SV *
3312coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3313{
3314 SV *coro_sv;
3315 struct coro *coro;
3316 MAGIC *mg;
3317 HV *hv;
3318 SV *cb;
3319 int i;
3320
3321 if (argc > 0)
3322 {
3323 cb = s_get_cv_croak (argv [0]);
3324
3325 if (!is_coro)
3326 {
3327 if (CvISXSUB (cb))
3328 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3329
3330 if (!CvROOT (cb))
3331 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3332 }
3333 }
3334
3335 Newz (0, coro, 1, struct coro);
3336 coro->args = newAV ();
3337 coro->flags = CF_NEW;
3338
3339 if (coro_first) coro_first->prev = coro;
3340 coro->next = coro_first;
3341 coro_first = coro;
3342
3343 coro->hv = hv = newHV ();
3344 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3345 mg->mg_flags |= MGf_DUP;
3346 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3347
3348 if (argc > 0)
3349 {
3350 av_extend (coro->args, argc + is_coro - 1);
3351
3352 if (is_coro)
3353 {
3354 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3355 cb = (SV *)cv_coro_run;
3356 }
3357
3358 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3359
3360 for (i = 1; i < argc; i++)
3361 av_push (coro->args, newSVsv (argv [i]));
3362 }
3363
3364 return coro_sv;
3365}
3366
3367#ifndef __cplusplus
3368ecb_cold XS(boot_Coro__State);
3369#endif
3370
3371#if CORO_JIT
3372
3373static void ecb_noinline ecb_cold
3374pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3375{
3376 dSP;
3377 AV *av = newAV ();
3378
3379 av_store (av, 3, newSVuv (d));
3380 av_store (av, 2, newSVuv (c));
3381 av_store (av, 1, newSVuv (b));
3382 av_store (av, 0, newSVuv (a));
3383
3384 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3385
3386 PUTBACK;
3387}
3388
3389static void ecb_noinline ecb_cold
3390jit_init (pTHX)
3391{
3392 dSP;
3393 SV *load, *save;
3394 char *map_base;
3395 char *load_ptr, *save_ptr;
3396 STRLEN load_len, save_len, map_len;
3397 int count;
3398
3399 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3400
3401 PUSHMARK (SP);
3402 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3403 #include "state.h"
3404 count = call_pv ("Coro::State::_jit", G_ARRAY);
3405 SPAGAIN;
3406
3407 save = POPs; save_ptr = SvPVbyte (save, save_len);
3408 load = POPs; load_ptr = SvPVbyte (load, load_len);
3409
3410 map_len = load_len + save_len + 16;
3411
3412 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3413
3414 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3415
3416 load_perl_slots = (load_save_perl_slots_type)map_base;
3417 memcpy (map_base, load_ptr, load_len);
3418
3419 map_base += (load_len + 15) & ~15;
3420
3421 save_perl_slots = (load_save_perl_slots_type)map_base;
3422 memcpy (map_base, save_ptr, save_len);
3423
3424 /* we are good citizens and try to make the page read-only, so the evil evil */
3425 /* hackers might have it a bit more difficult */
3426 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3427
3428 PUTBACK;
3429 eval_pv ("undef &Coro::State::_jit", 1);
3430}
3431
3432#endif
2503 3433
2504MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3434MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2505 3435
2506PROTOTYPES: DISABLE 3436PROTOTYPES: DISABLE
2507 3437
… …
2510#ifdef USE_ITHREADS 3440#ifdef USE_ITHREADS
2511# if CORO_PTHREAD 3441# if CORO_PTHREAD
2512 coro_thx = PERL_GET_CONTEXT; 3442 coro_thx = PERL_GET_CONTEXT;
2513# endif 3443# endif
2514#endif 3444#endif
2515 BOOT_PAGESIZE; 3445 /* perl defines these to check for existance first, but why it doesn't */
3446 /* just create them one at init time is not clear to me, except for */
3447 /* programs trying to delete them, but... */
3448 /* anyway, we declare this as invalid and make sure they are initialised here */
3449 DEFSV;
3450 ERRSV;
3451
3452 cctx_current = cctx_new_empty ();
2516 3453
2517 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3454 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2518 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3455 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2519 3456
2520 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3457 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2540 3477
2541 { 3478 {
2542 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3479 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2543 3480
2544 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3481 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2545 hv_store_ent (PL_custom_op_names, slf, 3482 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2546 newSVpv ("coro_slf", 0), 0);
2547 3483
2548 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3484 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2549 hv_store_ent (PL_custom_op_descs, slf, 3485 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2550 newSVpv ("coro schedule like function", 0), 0);
2551 } 3486 }
2552 3487
2553 coroapi.ver = CORO_API_VERSION; 3488 coroapi.ver = CORO_API_VERSION;
2554 coroapi.rev = CORO_API_REVISION; 3489 coroapi.rev = CORO_API_REVISION;
2555 3490
… …
2560 coroapi.prepare_nop = prepare_nop; 3495 coroapi.prepare_nop = prepare_nop;
2561 coroapi.prepare_schedule = prepare_schedule; 3496 coroapi.prepare_schedule = prepare_schedule;
2562 coroapi.prepare_cede = prepare_cede; 3497 coroapi.prepare_cede = prepare_cede;
2563 coroapi.prepare_cede_notself = prepare_cede_notself; 3498 coroapi.prepare_cede_notself = prepare_cede_notself;
2564 3499
2565 { 3500 time_init (aTHX);
2566 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2567 3501
2568 if (!svp) croak ("Time::HiRes is required");
2569 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2570
2571 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2572 }
2573
2574 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3502 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3503#if CORO_JIT
3504 PUTBACK;
3505 jit_init (aTHX);
3506 SPAGAIN;
3507#endif
2575} 3508}
2576 3509
2577SV * 3510SV *
2578new (char *klass, ...) 3511new (SV *klass, ...)
3512 ALIAS:
3513 Coro::new = 1
2579 CODE: 3514 CODE:
2580{ 3515 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2581 struct coro *coro; 3516 OUTPUT:
2582 MAGIC *mg;
2583 HV *hv;
2584 int i;
2585
2586 Newz (0, coro, 1, struct coro);
2587 coro->args = newAV ();
2588 coro->flags = CF_NEW;
2589
2590 if (coro_first) coro_first->prev = coro;
2591 coro->next = coro_first;
2592 coro_first = coro;
2593
2594 coro->hv = hv = newHV ();
2595 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2596 mg->mg_flags |= MGf_DUP;
2597 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2598
2599 av_extend (coro->args, items - 1);
2600 for (i = 1; i < items; i++)
2601 av_push (coro->args, newSVsv (ST (i)));
2602}
2603 OUTPUT:
2604 RETVAL 3517 RETVAL
2605 3518
2606void 3519void
2607transfer (...) 3520transfer (...)
2608 PROTOTYPE: $$ 3521 PROTOTYPE: $$
2609 CODE: 3522 CODE:
2610 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3523 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2611 3524
2612bool 3525SV *
2613_destroy (SV *coro_sv) 3526clone (Coro::State coro)
2614 CODE: 3527 CODE:
2615 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3528{
3529#if CORO_CLONE
3530 struct coro *ncoro = coro_clone (aTHX_ coro);
3531 MAGIC *mg;
3532 /* TODO: too much duplication */
3533 ncoro->hv = newHV ();
3534 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3535 mg->mg_flags |= MGf_DUP;
3536 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3537#else
3538 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3539#endif
3540}
2616 OUTPUT: 3541 OUTPUT:
2617 RETVAL 3542 RETVAL
2618
2619void
2620_exit (int code)
2621 PROTOTYPE: $
2622 CODE:
2623 _exit (code);
2624 3543
2625int 3544int
2626cctx_stacksize (int new_stacksize = 0) 3545cctx_stacksize (int new_stacksize = 0)
2627 PROTOTYPE: ;$ 3546 PROTOTYPE: ;$
2628 CODE: 3547 CODE:
… …
2664void 3583void
2665list () 3584list ()
2666 PROTOTYPE: 3585 PROTOTYPE:
2667 PPCODE: 3586 PPCODE:
2668{ 3587{
2669 struct coro *coro; 3588 struct coro *coro;
2670 for (coro = coro_first; coro; coro = coro->next) 3589 for (coro = coro_first; coro; coro = coro->next)
2671 if (coro->hv) 3590 if (coro->hv)
2672 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3591 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2673} 3592}
2674 3593
… …
2678 eval = 1 3597 eval = 1
2679 CODE: 3598 CODE:
2680{ 3599{
2681 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3600 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2682 { 3601 {
2683 struct coro temp; 3602 struct coro *current = SvSTATE_current;
3603 struct CoroSLF slf_save;
2684 3604
2685 if (!(coro->flags & CF_RUNNING)) 3605 if (current != coro)
2686 { 3606 {
2687 PUTBACK; 3607 PUTBACK;
2688 save_perl (aTHX_ &temp); 3608 save_perl (aTHX_ current);
2689 load_perl (aTHX_ coro); 3609 load_perl (aTHX_ coro);
3610 /* the coro is most likely in an active SLF call.
3611 * while not strictly required (the code we execute is
3612 * not allowed to call any SLF functions), it's cleaner
3613 * to reinitialise the slf_frame and restore it later.
3614 * This might one day allow us to actually do SLF calls
3615 * from code executed here.
3616 */
3617 slf_save = slf_frame;
3618 slf_frame.prepare = 0;
3619 SPAGAIN;
2690 } 3620 }
2691 3621
2692 {
2693 dSP;
2694 ENTER;
2695 SAVETMPS;
2696 PUTBACK;
2697 PUSHSTACK; 3622 PUSHSTACK;
3623
2698 PUSHMARK (SP); 3624 PUSHMARK (SP);
3625 PUTBACK;
2699 3626
2700 if (ix) 3627 if (ix)
2701 eval_sv (coderef, 0); 3628 eval_sv (coderef, 0);
2702 else 3629 else
2703 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3630 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2704 3631
2705 POPSTACK; 3632 POPSTACK;
2706 SPAGAIN; 3633 SPAGAIN;
2707 FREETMPS;
2708 LEAVE;
2709 PUTBACK;
2710 }
2711 3634
2712 if (!(coro->flags & CF_RUNNING)) 3635 if (current != coro)
2713 { 3636 {
3637 PUTBACK;
3638 slf_frame = slf_save;
2714 save_perl (aTHX_ coro); 3639 save_perl (aTHX_ coro);
2715 load_perl (aTHX_ &temp); 3640 load_perl (aTHX_ current);
2716 SPAGAIN; 3641 SPAGAIN;
2717 } 3642 }
2718 } 3643 }
2719} 3644}
2720 3645
… …
2723 PROTOTYPE: $ 3648 PROTOTYPE: $
2724 ALIAS: 3649 ALIAS:
2725 is_ready = CF_READY 3650 is_ready = CF_READY
2726 is_running = CF_RUNNING 3651 is_running = CF_RUNNING
2727 is_new = CF_NEW 3652 is_new = CF_NEW
2728 is_destroyed = CF_DESTROYED 3653 is_destroyed = CF_ZOMBIE
3654 is_zombie = CF_ZOMBIE
3655 is_suspended = CF_SUSPENDED
2729 CODE: 3656 CODE:
2730 RETVAL = boolSV (coro->flags & ix); 3657 RETVAL = boolSV (coro->flags & ix);
2731 OUTPUT: 3658 OUTPUT:
2732 RETVAL 3659 RETVAL
2733 3660
2734void 3661void
2735throw (Coro::State self, SV *throw = &PL_sv_undef) 3662throw (SV *self, SV *exception = &PL_sv_undef)
2736 PROTOTYPE: $;$ 3663 PROTOTYPE: $;$
2737 CODE: 3664 CODE:
2738{ 3665{
3666 struct coro *coro = SvSTATE (self);
2739 struct coro *current = SvSTATE_current; 3667 struct coro *current = SvSTATE_current;
2740 SV **throwp = self == current ? &CORO_THROW : &self->except; 3668 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2741 SvREFCNT_dec (*throwp); 3669 SvREFCNT_dec (*exceptionp);
2742 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3670 SvGETMAGIC (exception);
3671 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3672
3673 api_ready (aTHX_ self);
2743} 3674}
2744 3675
2745void 3676void
2746api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3677api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2747 PROTOTYPE: $;$ 3678 PROTOTYPE: $;$
… …
2749 3680
2750SV * 3681SV *
2751has_cctx (Coro::State coro) 3682has_cctx (Coro::State coro)
2752 PROTOTYPE: $ 3683 PROTOTYPE: $
2753 CODE: 3684 CODE:
2754 RETVAL = boolSV (!!coro->cctx); 3685 /* maybe manage the running flag differently */
3686 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2755 OUTPUT: 3687 OUTPUT:
2756 RETVAL 3688 RETVAL
2757 3689
2758int 3690int
2759is_traced (Coro::State coro) 3691is_traced (Coro::State coro)
… …
2779 3711
2780void 3712void
2781force_cctx () 3713force_cctx ()
2782 PROTOTYPE: 3714 PROTOTYPE:
2783 CODE: 3715 CODE:
2784 SvSTATE_current->cctx->idle_sp = 0; 3716 cctx_current->idle_sp = 0;
2785 3717
2786void 3718void
2787swap_defsv (Coro::State self) 3719swap_defsv (Coro::State self)
2788 PROTOTYPE: $ 3720 PROTOTYPE: $
2789 ALIAS: 3721 ALIAS:
… …
2797 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3729 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2798 3730
2799 SV *tmp = *src; *src = *dst; *dst = tmp; 3731 SV *tmp = *src; *src = *dst; *dst = tmp;
2800 } 3732 }
2801 3733
3734void
3735cancel (Coro::State self)
3736 CODE:
3737 coro_state_destroy (aTHX_ self);
3738
3739SV *
3740enable_times (int enabled = enable_times)
3741 CODE:
3742{
3743 RETVAL = boolSV (enable_times);
3744
3745 if (enabled != enable_times)
3746 {
3747 enable_times = enabled;
3748
3749 coro_times_update ();
3750 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3751 }
3752}
3753 OUTPUT:
3754 RETVAL
3755
3756void
3757times (Coro::State self)
3758 PPCODE:
3759{
3760 struct coro *current = SvSTATE (coro_current);
3761
3762 if (ecb_expect_false (current == self))
3763 {
3764 coro_times_update ();
3765 coro_times_add (SvSTATE (coro_current));
3766 }
3767
3768 EXTEND (SP, 2);
3769 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3770 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3771
3772 if (ecb_expect_false (current == self))
3773 coro_times_sub (SvSTATE (coro_current));
3774}
3775
3776void
3777swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3778 CODE:
3779{
3780 struct coro *current = SvSTATE_current;
3781
3782 if (current == coro)
3783 SWAP_SVS (current);
3784
3785 if (!coro->swap_sv)
3786 coro->swap_sv = newAV ();
3787
3788 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3789 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3790
3791 if (current == coro)
3792 SWAP_SVS (current);
3793}
3794
2802 3795
2803MODULE = Coro::State PACKAGE = Coro 3796MODULE = Coro::State PACKAGE = Coro
2804 3797
2805BOOT: 3798BOOT:
2806{ 3799{
2807 int i;
2808
2809 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2810 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3800 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2811 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3801 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2812 3802 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2813 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3803 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2814 SvREADONLY_on (coro_current); 3804 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3805 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3806 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3807 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3808
3809 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3810 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3811 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3812 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2815 3813
2816 coro_stash = gv_stashpv ("Coro", TRUE); 3814 coro_stash = gv_stashpv ("Coro", TRUE);
2817 3815
2818 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3816 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2819 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3817 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2820 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3818 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2821 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3819 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2822 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3820 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2823 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3821 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2824
2825 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2826 coro_ready[i] = newAV ();
2827 3822
2828 { 3823 {
2829 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3824 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2830 3825
2831 coroapi.schedule = api_schedule; 3826 coroapi.schedule = api_schedule;
3827 coroapi.schedule_to = api_schedule_to;
2832 coroapi.cede = api_cede; 3828 coroapi.cede = api_cede;
2833 coroapi.cede_notself = api_cede_notself; 3829 coroapi.cede_notself = api_cede_notself;
2834 coroapi.ready = api_ready; 3830 coroapi.ready = api_ready;
2835 coroapi.is_ready = api_is_ready; 3831 coroapi.is_ready = api_is_ready;
2836 coroapi.nready = coro_nready; 3832 coroapi.nready = coro_nready;
… …
2840 sv_setiv (sv, (IV)&coroapi); 3836 sv_setiv (sv, (IV)&coroapi);
2841 SvREADONLY_on (sv); 3837 SvREADONLY_on (sv);
2842 } 3838 }
2843} 3839}
2844 3840
3841SV *
3842async (...)
3843 PROTOTYPE: &@
3844 CODE:
3845 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3846 api_ready (aTHX_ RETVAL);
3847 OUTPUT:
3848 RETVAL
3849
3850void
3851_destroy (Coro::State coro)
3852 CODE:
3853 /* used by the manager thread */
3854 coro_state_destroy (aTHX_ coro);
3855
3856void
3857on_destroy (Coro::State coro, SV *cb)
3858 CODE:
3859 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3860
3861void
3862join (...)
3863 CODE:
3864 CORO_EXECUTE_SLF_XS (slf_init_join);
3865
3866void
3867terminate (...)
3868 CODE:
3869 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3870
3871void
3872cancel (...)
3873 CODE:
3874 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3875
3876int
3877safe_cancel (Coro::State self, ...)
3878 C_ARGS: aTHX_ self, &ST (1), items - 1
3879
2845void 3880void
2846schedule (...) 3881schedule (...)
2847 CODE: 3882 CODE:
2848 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3883 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3884
3885void
3886schedule_to (...)
3887 CODE:
3888 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3889
3890void
3891cede_to (...)
3892 CODE:
3893 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2849 3894
2850void 3895void
2851cede (...) 3896cede (...)
2852 CODE: 3897 CODE:
2853 CORO_EXECUTE_SLF_XS (slf_init_cede); 3898 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2867void 3912void
2868_set_readyhook (SV *hook) 3913_set_readyhook (SV *hook)
2869 PROTOTYPE: $ 3914 PROTOTYPE: $
2870 CODE: 3915 CODE:
2871 SvREFCNT_dec (coro_readyhook); 3916 SvREFCNT_dec (coro_readyhook);
3917 SvGETMAGIC (hook);
3918 if (SvOK (hook))
3919 {
2872 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3920 coro_readyhook = newSVsv (hook);
3921 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3922 }
3923 else
3924 {
3925 coro_readyhook = 0;
3926 CORO_READYHOOK = 0;
3927 }
2873 3928
2874int 3929int
2875prio (Coro::State coro, int newprio = 0) 3930prio (Coro::State coro, int newprio = 0)
2876 PROTOTYPE: $;$ 3931 PROTOTYPE: $;$
2877 ALIAS: 3932 ALIAS:
… …
2883 if (items > 1) 3938 if (items > 1)
2884 { 3939 {
2885 if (ix) 3940 if (ix)
2886 newprio = coro->prio - newprio; 3941 newprio = coro->prio - newprio;
2887 3942
2888 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3943 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2889 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3944 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2890 3945
2891 coro->prio = newprio; 3946 coro->prio = newprio;
2892 } 3947 }
2893} 3948}
2894 OUTPUT: 3949 OUTPUT:
… …
2908 CODE: 3963 CODE:
2909 RETVAL = coro_nready; 3964 RETVAL = coro_nready;
2910 OUTPUT: 3965 OUTPUT:
2911 RETVAL 3966 RETVAL
2912 3967
2913# for async_pool speedup
2914void 3968void
2915_pool_1 (SV *cb) 3969suspend (Coro::State self)
3970 PROTOTYPE: $
2916 CODE: 3971 CODE:
2917{ 3972 self->flags |= CF_SUSPENDED;
2918 HV *hv = (HV *)SvRV (coro_current);
2919 struct coro *coro = SvSTATE_hv ((SV *)hv);
2920 AV *defav = GvAV (PL_defgv);
2921 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2922 AV *invoke_av;
2923 int i, len;
2924 3973
2925 if (!invoke) 3974void
3975resume (Coro::State self)
3976 PROTOTYPE: $
3977 CODE:
3978 self->flags &= ~CF_SUSPENDED;
3979
3980void
3981_pool_handler (...)
3982 CODE:
3983 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3984
3985void
3986async_pool (SV *cv, ...)
3987 PROTOTYPE: &@
3988 PPCODE:
3989{
3990 HV *hv = (HV *)av_pop (av_async_pool);
3991 AV *av = newAV ();
3992 SV *cb = ST (0);
3993 int i;
3994
3995 av_extend (av, items - 2);
3996 for (i = 1; i < items; ++i)
3997 av_push (av, SvREFCNT_inc_NN (ST (i)));
3998
3999 if ((SV *)hv == &PL_sv_undef)
2926 { 4000 {
2927 SV *old = PL_diehook; 4001 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2928 PL_diehook = 0; 4002 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2929 SvREFCNT_dec (old); 4003 SvREFCNT_dec (sv);
2930 croak ("\3async_pool terminate\2\n");
2931 } 4004 }
2932 4005
2933 SvREFCNT_dec (coro->saved_deffh);
2934 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2935
2936 hv_store (hv, "desc", sizeof ("desc") - 1,
2937 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2938
2939 invoke_av = (AV *)SvRV (invoke);
2940 len = av_len (invoke_av);
2941
2942 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2943
2944 if (len > 0)
2945 { 4006 {
2946 av_fill (defav, len - 1); 4007 struct coro *coro = SvSTATE_hv (hv);
2947 for (i = 0; i < len; ++i) 4008
2948 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4009 assert (!coro->invoke_cb);
4010 assert (!coro->invoke_av);
4011 coro->invoke_cb = SvREFCNT_inc (cb);
4012 coro->invoke_av = av;
2949 } 4013 }
2950}
2951 4014
2952void 4015 api_ready (aTHX_ (SV *)hv);
2953_pool_2 (SV *cb)
2954 CODE:
2955{
2956 HV *hv = (HV *)SvRV (coro_current);
2957 struct coro *coro = SvSTATE_hv ((SV *)hv);
2958 4016
2959 sv_setsv (cb, &PL_sv_undef); 4017 if (GIMME_V != G_VOID)
2960 4018 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
2961 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4019 else
2962 coro->saved_deffh = 0;
2963
2964 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2965 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2966 {
2967 SV *old = PL_diehook;
2968 PL_diehook = 0;
2969 SvREFCNT_dec (old); 4020 SvREFCNT_dec (hv);
2970 croak ("\3async_pool terminate\2\n");
2971 }
2972
2973 av_clear (GvAV (PL_defgv));
2974 hv_store (hv, "desc", sizeof ("desc") - 1,
2975 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2976
2977 coro->prio = 0;
2978
2979 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2980 api_trace (aTHX_ coro_current, 0);
2981
2982 av_push (av_async_pool, newSVsv (coro_current));
2983} 4021}
2984 4022
2985SV * 4023SV *
2986rouse_cb () 4024rouse_cb ()
2987 PROTOTYPE: 4025 PROTOTYPE:
… …
2989 RETVAL = coro_new_rouse_cb (aTHX); 4027 RETVAL = coro_new_rouse_cb (aTHX);
2990 OUTPUT: 4028 OUTPUT:
2991 RETVAL 4029 RETVAL
2992 4030
2993void 4031void
2994rouse_wait (SV *cb = 0) 4032rouse_wait (...)
2995 PROTOTYPE: ;$ 4033 PROTOTYPE: ;$
2996 PPCODE: 4034 PPCODE:
2997 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4035 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2998 4036
4037void
4038on_enter (SV *block)
4039 ALIAS:
4040 on_leave = 1
4041 PROTOTYPE: &
4042 CODE:
4043{
4044 struct coro *coro = SvSTATE_current;
4045 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4046
4047 block = s_get_cv_croak (block);
4048
4049 if (!*avp)
4050 *avp = newAV ();
4051
4052 av_push (*avp, SvREFCNT_inc (block));
4053
4054 if (!ix)
4055 on_enterleave_call (aTHX_ block);
4056
4057 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4058 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4059 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4060}
4061
2999 4062
3000MODULE = Coro::State PACKAGE = PerlIO::cede 4063MODULE = Coro::State PACKAGE = PerlIO::cede
3001 4064
3002BOOT: 4065BOOT:
3003 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4066 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3006MODULE = Coro::State PACKAGE = Coro::Semaphore 4069MODULE = Coro::State PACKAGE = Coro::Semaphore
3007 4070
3008SV * 4071SV *
3009new (SV *klass, SV *count = 0) 4072new (SV *klass, SV *count = 0)
3010 CODE: 4073 CODE:
4074{
4075 int semcnt = 1;
4076
4077 if (count)
4078 {
4079 SvGETMAGIC (count);
4080
4081 if (SvOK (count))
4082 semcnt = SvIV (count);
4083 }
4084
3011 RETVAL = sv_bless ( 4085 RETVAL = sv_bless (
3012 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4086 coro_waitarray_new (aTHX_ semcnt),
3013 GvSTASH (CvGV (cv)) 4087 GvSTASH (CvGV (cv))
3014 ); 4088 );
4089}
3015 OUTPUT: 4090 OUTPUT:
3016 RETVAL 4091 RETVAL
3017 4092
3018# helper for Coro::Channel 4093# helper for Coro::Channel and others
3019SV * 4094SV *
3020_alloc (int count) 4095_alloc (int count)
3021 CODE: 4096 CODE:
3022 RETVAL = coro_waitarray_new (aTHX_ count); 4097 RETVAL = coro_waitarray_new (aTHX_ count);
3023 OUTPUT: 4098 OUTPUT:
… …
3036 adjust = 1 4111 adjust = 1
3037 CODE: 4112 CODE:
3038 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4113 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3039 4114
3040void 4115void
3041down (SV *self) 4116down (...)
3042 CODE: 4117 CODE:
3043 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4118 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3044 4119
3045void 4120void
3046wait (SV *self) 4121wait (...)
3047 CODE: 4122 CODE:
3048 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 4123 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3049 4124
3050void 4125void
3051try (SV *self) 4126try (SV *self)
… …
3065 XSRETURN_NO; 4140 XSRETURN_NO;
3066} 4141}
3067 4142
3068void 4143void
3069waiters (SV *self) 4144waiters (SV *self)
3070 PPCODE: 4145 PPCODE:
3071{ 4146{
3072 AV *av = (AV *)SvRV (self); 4147 AV *av = (AV *)SvRV (self);
3073 int wcount = AvFILLp (av) + 1 - 1; 4148 int wcount = AvFILLp (av) + 1 - 1;
3074 4149
3075 if (GIMME_V == G_SCALAR) 4150 if (GIMME_V == G_SCALAR)
… …
3081 for (i = 1; i <= wcount; ++i) 4156 for (i = 1; i <= wcount; ++i)
3082 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4157 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3083 } 4158 }
3084} 4159}
3085 4160
4161MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4162
4163void
4164_may_delete (SV *sem, int count, unsigned int extra_refs)
4165 PPCODE:
4166{
4167 AV *av = (AV *)SvRV (sem);
4168
4169 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4170 && AvFILLp (av) == 0 /* no waiters, just count */
4171 && SvIV (AvARRAY (av)[0]) == count)
4172 XSRETURN_YES;
4173
4174 XSRETURN_NO;
4175}
4176
3086MODULE = Coro::State PACKAGE = Coro::Signal 4177MODULE = Coro::State PACKAGE = Coro::Signal
3087 4178
3088SV * 4179SV *
3089new (SV *klass) 4180new (SV *klass)
3090 CODE: 4181 CODE:
… …
3094 ); 4185 );
3095 OUTPUT: 4186 OUTPUT:
3096 RETVAL 4187 RETVAL
3097 4188
3098void 4189void
3099wait (SV *self) 4190wait (...)
3100 CODE: 4191 CODE:
3101 CORO_EXECUTE_SLF_XS (slf_init_signal_wait); 4192 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3102 4193
3103void 4194void
3104broadcast (SV *self) 4195broadcast (SV *self)
3105 CODE: 4196 CODE:
3106{ 4197{
3107 AV *av = (AV *)SvRV (self); 4198 AV *av = (AV *)SvRV (self);
3108 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4199 coro_signal_wake (aTHX_ av, AvFILLp (av));
3109} 4200}
3110 4201
3111void 4202void
3112send (SV *self) 4203send (SV *self)
… …
3120 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4211 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3121} 4212}
3122 4213
3123IV 4214IV
3124awaited (SV *self) 4215awaited (SV *self)
3125 CODE: 4216 CODE:
3126 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4217 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3127 OUTPUT: 4218 OUTPUT:
3128 RETVAL 4219 RETVAL
3129 4220
3130 4221
… …
3135 4226
3136void 4227void
3137_schedule (...) 4228_schedule (...)
3138 CODE: 4229 CODE:
3139{ 4230{
3140 static int incede; 4231 static int incede;
3141 4232
3142 api_cede_notself (aTHX); 4233 api_cede_notself (aTHX);
3143 4234
3144 ++incede; 4235 ++incede;
3145 while (coro_nready >= incede && api_cede (aTHX)) 4236 while (coro_nready >= incede && api_cede (aTHX))
… …
3161 4252
3162void 4253void
3163_register (char *target, char *proto, SV *req) 4254_register (char *target, char *proto, SV *req)
3164 CODE: 4255 CODE:
3165{ 4256{
3166 HV *st; 4257 SV *req_cv = s_get_cv_croak (req);
3167 GV *gvp;
3168 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3169 /* newXSproto doesn't return the CV on 5.8 */ 4258 /* newXSproto doesn't return the CV on 5.8 */
3170 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4259 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3171 sv_setpv ((SV *)slf_cv, proto); 4260 sv_setpv ((SV *)slf_cv, proto);
3172 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4261 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3173} 4262}
3174 4263
4264MODULE = Coro::State PACKAGE = Coro::Select
4265
4266void
4267patch_pp_sselect ()
4268 CODE:
4269 if (!coro_old_pp_sselect)
4270 {
4271 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4272 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4273 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4274 }
4275
4276void
4277unpatch_pp_sselect ()
4278 CODE:
4279 if (coro_old_pp_sselect)
4280 {
4281 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4282 coro_old_pp_sselect = 0;
4283 }
4284
4285MODULE = Coro::State PACKAGE = Coro::Util
4286
4287void
4288_exit (int code)
4289 CODE:
4290 _exit (code);
4291
4292NV
4293time ()
4294 CODE:
4295 RETVAL = nvtime (aTHX);
4296 OUTPUT:
4297 RETVAL
4298
4299NV
4300gettimeofday ()
4301 PPCODE:
4302{
4303 UV tv [2];
4304 u2time (aTHX_ tv);
4305 EXTEND (SP, 2);
4306 PUSHs (sv_2mortal (newSVuv (tv [0])));
4307 PUSHs (sv_2mortal (newSVuv (tv [1])));
4308}
4309

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