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Comparing Coro/Coro/State.xs (file contents):
Revision 1.308 by root, Wed Nov 19 15:09:57 2008 UTC vs.
Revision 1.437 by root, Tue Nov 5 15:13:42 2013 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#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI 1
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
48/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
49#if PERL_VERSION_ATLEAST(5,19,0)
50# define SVt_BIND SVt_IV
51#endif
52
53#if defined(_WIN32)
54# undef HAS_GETTIMEOFDAY
18# undef setjmp 55# undef setjmp
19# undef longjmp 56# undef longjmp
20# undef _exit 57# undef _exit
21# define setjmp _setjmp /* deep magic */ 58# define setjmp _setjmp /* deep magic */
22#else 59#else
23# include <inttypes.h> /* most portable stdint.h */ 60# include <inttypes.h> /* most portable stdint.h */
24#endif 61#endif
25 62
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 */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \ 66#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 67# 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 68#endif
116 69
117/* prefer perl internal functions over our own? */ 70/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 71#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 72# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 80#else
128# define dSTACKLEVEL volatile void *stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 82# define STACKLEVEL ((void *)&stacklevel)
130#endif 83#endif
131 84
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#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 86
149#include "CoroAPI.h" 87#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 88#define GCoroAPI (&coroapi) /* very sneaky */
151 89
152#ifdef USE_ITHREADS 90#ifdef USE_ITHREADS
153# if CORO_PTHREAD 91# if CORO_PTHREAD
154static void *coro_thx; 92static void *coro_thx;
155# endif 93# endif
156#endif 94#endif
157 95
96#ifdef __linux
97# include <time.h> /* for timespec */
98# include <syscall.h> /* for SYS_* */
99# ifdef SYS_clock_gettime
100# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
101# define CORO_CLOCK_MONOTONIC 1
102# define CORO_CLOCK_THREAD_CPUTIME_ID 3
103# endif
104#endif
105
158static double (*nvtime)(); /* so why doesn't it take void? */ 106static double (*nvtime)(); /* so why doesn't it take void? */
107static void (*u2time)(pTHX_ UV ret[2]);
159 108
160/* we hijack an hopefully unused CV flag for our purposes */ 109/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 110#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 111static OP *pp_slf (pTHX);
112static void slf_destroy (pTHX_ struct coro *coro);
163 113
164static U32 cctx_gen; 114static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 115static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 116static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 117static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 118static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 119static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 120static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 121
122static AV *av_destroy; /* destruction queue */
123static SV *sv_manager; /* the manager coro */
124static SV *sv_idle; /* $Coro::idle */
125
172static GV *irsgv; /* $/ */ 126static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 127static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 128static SV *rv_diehook;
175static SV *rv_warnhook; 129static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 130static HV *hv_sig; /* %SIG */
177 131
178/* async_pool helper stuff */ 132/* async_pool helper stuff */
179static SV *sv_pool_rss; 133static SV *sv_pool_rss;
180static SV *sv_pool_size; 134static SV *sv_pool_size;
135static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 136static AV *av_async_pool; /* idle pool */
137static SV *sv_Coro; /* class string */
138static CV *cv_pool_handler;
182 139
183/* Coro::AnyEvent */ 140/* Coro::AnyEvent */
184static SV *sv_activity; 141static SV *sv_activity;
185 142
143/* enable processtime/realtime profiling */
144static char enable_times;
145typedef U32 coro_ts[2];
146static coro_ts time_real, time_cpu;
147static char times_valid;
148
186static struct coro_cctx *cctx_first; 149static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 150static int cctx_count, cctx_idle;
188 151
189enum { 152enum
153{
190 CC_MAPPED = 0x01, 154 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 155 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 156 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 157 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 158 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 163typedef struct coro_cctx
200{ 164{
201 struct coro_cctx *next; 165 struct coro_cctx *next;
202 166
203 /* the stack */ 167 /* the stack */
204 void *sptr; 168 struct coro_stack stack;
205 size_t ssize;
206 169
207 /* cpu state */ 170 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
172#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 173 JMPENV *idle_te; /* same as idle_sp, but for top_env */
174#endif
210 JMPENV *top_env; 175 JMPENV *top_env;
211 coro_context cctx; 176 coro_context cctx;
212 177
213 U32 gen; 178 U32 gen;
214#if CORO_USE_VALGRIND 179#if CORO_USE_VALGRIND
215 int valgrind_id; 180 int valgrind_id;
216#endif 181#endif
217 unsigned char flags; 182 unsigned char flags;
218} coro_cctx; 183} coro_cctx;
219 184
185static coro_cctx *cctx_current; /* the currently running cctx */
186
187/*****************************************************************************/
188
189static MGVTBL coro_state_vtbl;
190
220enum { 191enum
192{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 193 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 194 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 195 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 196 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
197 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
198 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 199};
226 200
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 201/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 202typedef struct
229{ 203{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 204 #define VARx(name,expr,type) type name;
235# include "state.h" 205 #include "state.h"
236#undef VAR
237} perl_slots; 206} perl_slots;
238 207
208/* 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)) 209#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 210
241/* this is a structure representing a perl-level coroutine */ 211/* this is a structure representing a perl-level coroutine */
242struct coro { 212struct coro
213{
243 /* the C coroutine allocated to this perl coroutine, if any */ 214 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 215 coro_cctx *cctx;
216
217 /* ready queue */
218 struct coro *next_ready;
245 219
246 /* state data */ 220 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 221 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 222 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 223 perl_slots *slot; /* basically the saved sp */
250 224
251 CV *startcv; /* the CV to execute */ 225 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 226 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 228 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 229
258 /* statistics */ 230 /* statistics */
259 int usecount; /* number of transfers to this coro */ 231 int usecount; /* number of transfers to this coro */
260 232
261 /* coro process data */ 233 /* coro process data */
262 int prio; 234 int prio;
263 SV *except; /* exception to be thrown */ 235 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 236 SV *rouse_cb; /* last rouse callback */
237 AV *on_destroy; /* callbacks or coros to notify on destroy */
238 AV *status; /* the exit status list */
265 239
266 /* async_pool */ 240 /* async_pool */
267 SV *saved_deffh; 241 SV *saved_deffh;
242 SV *invoke_cb;
243 AV *invoke_av;
244
245 /* on_enter/on_leave */
246 AV *on_enter;
247 AV *on_leave;
248
249 /* swap_sv */
250 AV *swap_sv;
251
252 /* times */
253 coro_ts t_cpu, t_real;
268 254
269 /* linked list */ 255 /* linked list */
270 struct coro *next, *prev; 256 struct coro *next, *prev;
271}; 257};
272 258
273typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
275 261
276/* the following variables are effectively part of the perl context */ 262/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 263/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 264/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 265static struct CoroSLF slf_frame; /* the current slf frame */
280 266
281/** Coro ********************************************************************/ 267/** Coro ********************************************************************/
282 268
283#define PRIO_MAX 3 269#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 270#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 271#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 272#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 273#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 274#define CORO_PRIO_MIN -4
289 275
290/* for Coro.pm */ 276/* for Coro.pm */
291static SV *coro_current; 277static SV *coro_current;
292static SV *coro_readyhook; 278static SV *coro_readyhook;
293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 279static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
280static CV *cv_coro_run;
294static struct coro *coro_first; 281static struct coro *coro_first;
295#define coro_nready coroapi.nready 282#define coro_nready coroapi.nready
296 283
284/** JIT *********************************************************************/
285
286#if CORO_JIT
287 /* APPLE doesn't have mmap though */
288 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
289 #ifndef CORO_JIT_TYPE
290 #if ECB_AMD64 && CORO_JIT_UNIXY
291 #define CORO_JIT_TYPE "amd64-unix"
292 #elif __i386 && CORO_JIT_UNIXY
293 #define CORO_JIT_TYPE "x86-unix"
294 #endif
295 #endif
296#endif
297
298#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
299 #undef CORO_JIT
300#endif
301
302#if CORO_JIT
303 typedef void (*load_save_perl_slots_type)(perl_slots *);
304 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
305#endif
306
307/** Coro::Select ************************************************************/
308
309static OP *(*coro_old_pp_sselect) (pTHX);
310static SV *coro_select_select;
311
312/* horrible hack, but if it works... */
313static OP *
314coro_pp_sselect (pTHX)
315{
316 dSP;
317 PUSHMARK (SP - 4); /* fake argument list */
318 XPUSHs (coro_select_select);
319 PUTBACK;
320
321 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
322 PL_op->op_flags |= OPf_STACKED;
323 PL_op->op_private = 0;
324 return PL_ppaddr [OP_ENTERSUB](aTHX);
325}
326
327/** time stuff **************************************************************/
328
329#ifdef HAS_GETTIMEOFDAY
330
331ecb_inline void
332coro_u2time (pTHX_ UV ret[2])
333{
334 struct timeval tv;
335 gettimeofday (&tv, 0);
336
337 ret [0] = tv.tv_sec;
338 ret [1] = tv.tv_usec;
339}
340
341ecb_inline double
342coro_nvtime (void)
343{
344 struct timeval tv;
345 gettimeofday (&tv, 0);
346
347 return tv.tv_sec + tv.tv_usec * 1e-6;
348}
349
350ecb_inline void
351time_init (pTHX)
352{
353 nvtime = coro_nvtime;
354 u2time = coro_u2time;
355}
356
357#else
358
359ecb_inline void
360time_init (pTHX)
361{
362 SV **svp;
363
364 require_pv ("Time/HiRes.pm");
365
366 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
367
368 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
369 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
370
371 nvtime = INT2PTR (double (*)(), SvIV (*svp));
372
373 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
374 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
375}
376
377#endif
378
297/** lowlevel stuff **********************************************************/ 379/** lowlevel stuff **********************************************************/
298 380
299static SV * 381static SV * ecb_noinline
300coro_get_sv (pTHX_ const char *name, int create) 382coro_get_sv (pTHX_ const char *name, int create)
301{ 383{
302#if PERL_VERSION_ATLEAST (5,10,0) 384#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 385 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_sv (name, create); 386 get_sv (name, create);
305#endif 387#endif
306 return get_sv (name, create); 388 return get_sv (name, create);
307} 389}
308 390
309static AV * 391static AV * ecb_noinline
310coro_get_av (pTHX_ const char *name, int create) 392coro_get_av (pTHX_ const char *name, int create)
311{ 393{
312#if PERL_VERSION_ATLEAST (5,10,0) 394#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 395 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_av (name, create); 396 get_av (name, create);
315#endif 397#endif
316 return get_av (name, create); 398 return get_av (name, create);
317} 399}
318 400
319static HV * 401static HV * ecb_noinline
320coro_get_hv (pTHX_ const char *name, int create) 402coro_get_hv (pTHX_ const char *name, int create)
321{ 403{
322#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_hv (name, create); 406 get_hv (name, create);
325#endif 407#endif
326 return get_hv (name, create); 408 return get_hv (name, create);
327} 409}
328 410
329/* may croak */ 411ecb_inline void
330INLINE CV * 412coro_times_update (void)
331coro_sv_2cv (SV *sv)
332{ 413{
333 HV *st; 414#ifdef coro_clock_gettime
334 GV *gvp; 415 struct timespec ts;
335 return sv_2cv (sv, &st, &gvp, 0);
336}
337 416
338static AV * 417 ts.tv_sec = ts.tv_nsec = 0;
418 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
419 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
420
421 ts.tv_sec = ts.tv_nsec = 0;
422 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
423 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
424#else
425 dTHX;
426 UV tv[2];
427
428 u2time (aTHX_ tv);
429 time_real [0] = tv [0];
430 time_real [1] = tv [1] * 1000;
431#endif
432}
433
434ecb_inline void
435coro_times_add (struct coro *c)
436{
437 c->t_real [1] += time_real [1];
438 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
439 c->t_real [0] += time_real [0];
440
441 c->t_cpu [1] += time_cpu [1];
442 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
443 c->t_cpu [0] += time_cpu [0];
444}
445
446ecb_inline void
447coro_times_sub (struct coro *c)
448{
449 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
450 c->t_real [1] -= time_real [1];
451 c->t_real [0] -= time_real [0];
452
453 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
454 c->t_cpu [1] -= time_cpu [1];
455 c->t_cpu [0] -= time_cpu [0];
456}
457
458/*****************************************************************************/
459/* magic glue */
460
461#define CORO_MAGIC_type_cv 26
462#define CORO_MAGIC_type_state PERL_MAGIC_ext
463
464#define CORO_MAGIC_NN(sv, type) \
465 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
466 ? SvMAGIC (sv) \
467 : mg_find (sv, type))
468
469#define CORO_MAGIC(sv, type) \
470 (ecb_expect_true (SvMAGIC (sv)) \
471 ? CORO_MAGIC_NN (sv, type) \
472 : 0)
473
474#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
475#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
476
477ecb_inline MAGIC *
478SvSTATEhv_p (pTHX_ SV *coro)
479{
480 MAGIC *mg;
481
482 if (ecb_expect_true (
483 SvTYPE (coro) == SVt_PVHV
484 && (mg = CORO_MAGIC_state (coro))
485 && mg->mg_virtual == &coro_state_vtbl
486 ))
487 return mg;
488
489 return 0;
490}
491
492ecb_inline struct coro *
493SvSTATE_ (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (SvROK (coro))
498 coro = SvRV (coro);
499
500 mg = SvSTATEhv_p (aTHX_ coro);
501 if (!mg)
502 croak ("Coro::State object required");
503
504 return (struct coro *)mg->mg_ptr;
505}
506
507#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
508
509/* faster than SvSTATE, but expects a coroutine hv */
510#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
511#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
512
513/*****************************************************************************/
514/* padlist management and caching */
515
516ecb_inline PADLIST *
339coro_clone_padlist (pTHX_ CV *cv) 517coro_derive_padlist (pTHX_ CV *cv)
340{ 518{
341 AV *padlist = CvPADLIST (cv); 519 PADLIST *padlist = CvPADLIST (cv);
342 AV *newpadlist, *newpad; 520 PADLIST *newpadlist;
521 PAD *newpad;
522 PADOFFSET off = PadlistMAX (padlist) + 1;
343 523
344 newpadlist = newAV (); 524#if NEWPADAPI
525
526 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
527 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
528 while (!PadlistARRAY (padlist)[off - 1])
529 --off;
530
531 Perl_pad_push (aTHX_ padlist, off);
532
533 newpad = PadlistARRAY (padlist)[off];
534 PadlistARRAY (padlist)[off] = 0;
535
536#else
537
538#if PERL_VERSION_ATLEAST (5,10,0)
539 Perl_pad_push (aTHX_ padlist, off);
540#else
541 Perl_pad_push (aTHX_ padlist, off, 1);
542#endif
543
544 newpad = PadlistARRAY (padlist)[off];
545 PadlistMAX (padlist) = off - 1;
546
547#endif
548
549 newPADLIST (newpadlist);
550#if !PERL_VERSION_ATLEAST(5,15,3)
551 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
345 AvREAL_off (newpadlist); 552 AvREAL_off (newpadlist);
346#if PERL_VERSION_ATLEAST (5,10,0) 553#endif
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 554
555 /* Already extended to 2 elements by newPADLIST. */
556 PadlistMAX (newpadlist) = 1;
557 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
558 PadlistARRAY (newpadlist)[1] = newpad;
559
560 return newpadlist;
561}
562
563ecb_inline void
564free_padlist (pTHX_ PADLIST *padlist)
565{
566 /* may be during global destruction */
567 if (!IN_DESTRUCT)
568 {
569 I32 i = PadlistMAX (padlist);
570
571 while (i > 0) /* special-case index 0 */
572 {
573 /* we try to be extra-careful here */
574 PAD *pad = PadlistARRAY (padlist)[i--];
575 I32 j = PadMAX (pad);
576
577 while (j >= 0)
578 SvREFCNT_dec (PadARRAY (pad)[j--]);
579
580 PadMAX (pad) = -1;
581 SvREFCNT_dec (pad);
582 }
583
584 SvREFCNT_dec (PadlistNAMES (padlist));
585
586#if NEWPADAPI
587 Safefree (PadlistARRAY (padlist));
588 Safefree (padlist);
348#else 589#else
349 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
350#endif
351 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
352 --AvFILLp (padlist);
353
354 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
355 av_store (newpadlist, 1, (SV *)newpad);
356
357 return newpadlist;
358}
359
360static void
361free_padlist (pTHX_ AV *padlist)
362{
363 /* may be during global destruction */
364 if (SvREFCNT (padlist))
365 {
366 I32 i = AvFILLp (padlist); 590 AvFILLp (padlist) = -1;
367 while (i >= 0) 591 AvREAL_off (padlist);
368 {
369 SV **svp = av_fetch (padlist, i--, FALSE);
370 if (svp)
371 {
372 SV *sv;
373 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
374 SvREFCNT_dec (sv);
375
376 SvREFCNT_dec (*svp);
377 }
378 }
379
380 SvREFCNT_dec ((SV*)padlist); 592 SvREFCNT_dec ((SV*)padlist);
593#endif
381 } 594 }
382} 595}
383 596
384static int 597static int
385coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 598coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
386{ 599{
387 AV *padlist; 600 PADLIST *padlist;
388 AV *av = (AV *)mg->mg_obj; 601 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
602 size_t len = *(size_t *)mg->mg_ptr;
389 603
390 /* casting is fun. */ 604 /* perl manages to free our internal AV and _then_ call us */
391 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 605 if (IN_DESTRUCT)
606 return 0;
607
608 while (len--)
392 free_padlist (aTHX_ padlist); 609 free_padlist (aTHX_ padlists[len]);
393
394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
395 610
396 return 0; 611 return 0;
397} 612}
398
399#define CORO_MAGIC_type_cv 26
400#define CORO_MAGIC_type_state PERL_MAGIC_ext
401 613
402static MGVTBL coro_cv_vtbl = { 614static MGVTBL coro_cv_vtbl = {
403 0, 0, 0, 0, 615 0, 0, 0, 0,
404 coro_cv_free 616 coro_cv_free
405}; 617};
406 618
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
412#define CORO_MAGIC(sv, type) \
413 (expect_true (SvMAGIC (sv)) \
414 ? CORO_MAGIC_NN (sv, type) \
415 : 0)
416
417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
419
420INLINE struct coro *
421SvSTATE_ (pTHX_ SV *coro)
422{
423 HV *stash;
424 MAGIC *mg;
425
426 if (SvROK (coro))
427 coro = SvRV (coro);
428
429 if (expect_false (SvTYPE (coro) != SVt_PVHV))
430 croak ("Coro::State object required");
431
432 stash = SvSTASH (coro);
433 if (expect_false (stash != coro_stash && stash != coro_state_stash))
434 {
435 /* very slow, but rare, check */
436 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
437 croak ("Coro::State object required");
438 }
439
440 mg = CORO_MAGIC_state (coro);
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
449
450/* the next two functions merely cache the padlists */ 619/* the next two functions merely cache the padlists */
451static void 620ecb_inline void
452get_padlist (pTHX_ CV *cv) 621get_padlist (pTHX_ CV *cv)
453{ 622{
454 MAGIC *mg = CORO_MAGIC_cv (cv); 623 MAGIC *mg = CORO_MAGIC_cv (cv);
455 AV *av; 624 size_t *lenp;
456 625
457 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 626 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
458 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 627 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
459 else 628 else
460 { 629 {
461#if CORO_PREFER_PERL_FUNCTIONS 630#if CORO_PREFER_PERL_FUNCTIONS
462 /* this is probably cleaner? but also slower! */ 631 /* this is probably cleaner? but also slower! */
463 /* in practise, it seems to be less stable */ 632 /* in practise, it seems to be less stable */
464 CV *cp = Perl_cv_clone (aTHX_ cv); 633 CV *cp = Perl_cv_clone (aTHX_ cv);
465 CvPADLIST (cv) = CvPADLIST (cp); 634 CvPADLIST (cv) = CvPADLIST (cp);
466 CvPADLIST (cp) = 0; 635 CvPADLIST (cp) = 0;
467 SvREFCNT_dec (cp); 636 SvREFCNT_dec (cp);
468#else 637#else
469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 638 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
470#endif 639#endif
471 } 640 }
472} 641}
473 642
474static void 643ecb_inline void
475put_padlist (pTHX_ CV *cv) 644put_padlist (pTHX_ CV *cv)
476{ 645{
477 MAGIC *mg = CORO_MAGIC_cv (cv); 646 MAGIC *mg = CORO_MAGIC_cv (cv);
478 AV *av;
479 647
480 if (expect_false (!mg)) 648 if (ecb_expect_false (!mg))
649 {
481 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 650 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
651 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
652 mg->mg_len = 1; /* so mg_free frees mg_ptr */
653 }
654 else
655 Renew (mg->mg_ptr,
656 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
657 char);
482 658
483 av = (AV *)mg->mg_obj; 659 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
484
485 if (expect_false (AvFILLp (av) >= AvMAX (av)))
486 av_extend (av, AvMAX (av) + 1);
487
488 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
489} 660}
490 661
491/** load & save, init *******************************************************/ 662/** load & save, init *******************************************************/
663
664ecb_inline void
665swap_sv (SV *a, SV *b)
666{
667 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
668 SV tmp;
669
670 /* swap sv_any */
671 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
672
673 /* swap sv_flags */
674 SvFLAGS (&tmp) = SvFLAGS (a);
675 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
676 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
677
678#if PERL_VERSION_ATLEAST (5,10,0)
679 /* perl 5.10 and later complicates this _quite_ a bit, but it also
680 * is much faster, so no quarrels here. alternatively, we could
681 * sv_upgrade to avoid this.
682 */
683 {
684 /* swap sv_u */
685 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
686
687 /* if SvANY points to the head, we need to adjust the pointers,
688 * as the pointer for a still points to b, and maybe vice versa.
689 */
690 #define svany_in_head(type) \
691 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
692
693 if (svany_in_head (SvTYPE (a)))
694 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
695
696 if (svany_in_head (SvTYPE (b)))
697 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
698 }
699#endif
700}
701
702/* swap sv heads, at least logically */
703static void
704swap_svs (pTHX_ Coro__State c)
705{
706 int i;
707
708 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
709 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
710}
711
712#define SWAP_SVS(coro) \
713 if (ecb_expect_false ((coro)->swap_sv)) \
714 swap_svs (aTHX_ (coro))
715
716static void
717on_enterleave_call (pTHX_ SV *cb);
492 718
493static void 719static void
494load_perl (pTHX_ Coro__State c) 720load_perl (pTHX_ Coro__State c)
495{ 721{
496 perl_slots *slot = c->slot; 722 perl_slots *slot = c->slot;
497 c->slot = 0; 723 c->slot = 0;
498 724
499 PL_mainstack = c->mainstack; 725 PL_mainstack = c->mainstack;
500 726
501 GvSV (PL_defgv) = slot->defsv; 727#if CORO_JIT
502 GvAV (PL_defgv) = slot->defav; 728 load_perl_slots (slot);
503 GvSV (PL_errgv) = slot->errsv; 729#else
504 GvSV (irsgv) = slot->irsgv;
505
506 #define VAR(name,type) PL_ ## name = slot->name; 730 #define VARx(name,expr,type) expr = slot->name;
507 # include "state.h" 731 #include "state.h"
508 #undef VAR 732#endif
509 733
510 { 734 {
511 dSP; 735 dSP;
512 736
513 CV *cv; 737 CV *cv;
514 738
515 /* now do the ugly restore mess */ 739 /* now do the ugly restore mess */
516 while (expect_true (cv = (CV *)POPs)) 740 while (ecb_expect_true (cv = (CV *)POPs))
517 { 741 {
518 put_padlist (aTHX_ cv); /* mark this padlist as available */ 742 put_padlist (aTHX_ cv); /* mark this padlist as available */
519 CvDEPTH (cv) = PTR2IV (POPs); 743 CvDEPTH (cv) = PTR2IV (POPs);
520 CvPADLIST (cv) = (AV *)POPs; 744 CvPADLIST (cv) = (PADLIST *)POPs;
521 } 745 }
522 746
523 PUTBACK; 747 PUTBACK;
524 } 748 }
525 749
526 slf_frame = c->slf_frame; 750 slf_frame = c->slf_frame;
527 CORO_THROW = c->except; 751 CORO_THROW = c->except;
752
753 if (ecb_expect_false (enable_times))
754 {
755 if (ecb_expect_false (!times_valid))
756 coro_times_update ();
757
758 coro_times_sub (c);
759 }
760
761 if (ecb_expect_false (c->on_enter))
762 {
763 int i;
764
765 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
766 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
767 }
768
769 SWAP_SVS (c);
528} 770}
529 771
530static void 772static void
531save_perl (pTHX_ Coro__State c) 773save_perl (pTHX_ Coro__State c)
532{ 774{
775 SWAP_SVS (c);
776
777 if (ecb_expect_false (c->on_leave))
778 {
779 int i;
780
781 for (i = AvFILLp (c->on_leave); i >= 0; --i)
782 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
783 }
784
785 times_valid = 0;
786
787 if (ecb_expect_false (enable_times))
788 {
789 coro_times_update (); times_valid = 1;
790 coro_times_add (c);
791 }
792
533 c->except = CORO_THROW; 793 c->except = CORO_THROW;
534 c->slf_frame = slf_frame; 794 c->slf_frame = slf_frame;
535 795
536 { 796 {
537 dSP; 797 dSP;
… …
546 806
547 XPUSHs (Nullsv); 807 XPUSHs (Nullsv);
548 /* this loop was inspired by pp_caller */ 808 /* this loop was inspired by pp_caller */
549 for (;;) 809 for (;;)
550 { 810 {
551 while (expect_true (cxix >= 0)) 811 while (ecb_expect_true (cxix >= 0))
552 { 812 {
553 PERL_CONTEXT *cx = &ccstk[cxix--]; 813 PERL_CONTEXT *cx = &ccstk[cxix--];
554 814
555 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 815 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
556 { 816 {
557 CV *cv = cx->blk_sub.cv; 817 CV *cv = cx->blk_sub.cv;
558 818
559 if (expect_true (CvDEPTH (cv))) 819 if (ecb_expect_true (CvDEPTH (cv)))
560 { 820 {
561 EXTEND (SP, 3); 821 EXTEND (SP, 3);
562 PUSHs ((SV *)CvPADLIST (cv)); 822 PUSHs ((SV *)CvPADLIST (cv));
563 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 823 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
564 PUSHs ((SV *)cv); 824 PUSHs ((SV *)cv);
… …
567 get_padlist (aTHX_ cv); 827 get_padlist (aTHX_ cv);
568 } 828 }
569 } 829 }
570 } 830 }
571 831
572 if (expect_true (top_si->si_type == PERLSI_MAIN)) 832 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
573 break; 833 break;
574 834
575 top_si = top_si->si_prev; 835 top_si = top_si->si_prev;
576 ccstk = top_si->si_cxstack; 836 ccstk = top_si->si_cxstack;
577 cxix = top_si->si_cxix; 837 cxix = top_si->si_cxix;
… …
579 839
580 PUTBACK; 840 PUTBACK;
581 } 841 }
582 842
583 /* allocate some space on the context stack for our purposes */ 843 /* allocate some space on the context stack for our purposes */
584 /* we manually unroll here, as usually 2 slots is enough */ 844 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
585 if (SLOT_COUNT >= 1) CXINC;
586 if (SLOT_COUNT >= 2) CXINC;
587 if (SLOT_COUNT >= 3) CXINC;
588 { 845 {
589 int i; 846 unsigned int i;
847
590 for (i = 3; i < SLOT_COUNT; ++i) 848 for (i = 0; i < SLOT_COUNT; ++i)
591 CXINC; 849 CXINC;
592 } 850
593 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 851 cxstack_ix -= SLOT_COUNT; /* undo allocation */
852 }
594 853
595 c->mainstack = PL_mainstack; 854 c->mainstack = PL_mainstack;
596 855
597 { 856 {
598 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 857 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
599 858
600 slot->defav = GvAV (PL_defgv); 859#if CORO_JIT
601 slot->defsv = DEFSV; 860 save_perl_slots (slot);
602 slot->errsv = ERRSV; 861#else
603 slot->irsgv = GvSV (irsgv);
604
605 #define VAR(name,type) slot->name = PL_ ## name; 862 #define VARx(name,expr,type) slot->name = expr;
606 # include "state.h" 863 #include "state.h"
607 #undef VAR 864#endif
608 } 865 }
609} 866}
610 867
611/* 868/*
612 * allocate various perl stacks. This is almost an exact copy 869 * allocate various perl stacks. This is almost an exact copy
… …
618# define coro_init_stacks(thx) init_stacks () 875# define coro_init_stacks(thx) init_stacks ()
619#else 876#else
620static void 877static void
621coro_init_stacks (pTHX) 878coro_init_stacks (pTHX)
622{ 879{
623 PL_curstackinfo = new_stackinfo(32, 8); 880 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
624 PL_curstackinfo->si_type = PERLSI_MAIN; 881 PL_curstackinfo->si_type = PERLSI_MAIN;
625 PL_curstack = PL_curstackinfo->si_stack; 882 PL_curstack = PL_curstackinfo->si_stack;
626 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 883 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
627 884
628 PL_stack_base = AvARRAY(PL_curstack); 885 PL_stack_base = AvARRAY(PL_curstack);
… …
643#endif 900#endif
644 901
645 New(54,PL_scopestack,8,I32); 902 New(54,PL_scopestack,8,I32);
646 PL_scopestack_ix = 0; 903 PL_scopestack_ix = 0;
647 PL_scopestack_max = 8; 904 PL_scopestack_max = 8;
905#if HAS_SCOPESTACK_NAME
906 New(54,PL_scopestack_name,8,const char*);
907#endif
648 908
649 New(54,PL_savestack,24,ANY); 909 New(54,PL_savestack,24,ANY);
650 PL_savestack_ix = 0; 910 PL_savestack_ix = 0;
651 PL_savestack_max = 24; 911 PL_savestack_max = 24;
652 912
… …
680 } 940 }
681 941
682 Safefree (PL_tmps_stack); 942 Safefree (PL_tmps_stack);
683 Safefree (PL_markstack); 943 Safefree (PL_markstack);
684 Safefree (PL_scopestack); 944 Safefree (PL_scopestack);
945#if HAS_SCOPESTACK_NAME
946 Safefree (PL_scopestack_name);
947#endif
685 Safefree (PL_savestack); 948 Safefree (PL_savestack);
686#if !PERL_VERSION_ATLEAST (5,10,0) 949#if !PERL_VERSION_ATLEAST (5,10,0)
687 Safefree (PL_retstack); 950 Safefree (PL_retstack);
688#endif 951#endif
689} 952}
690 953
954#define CORO_RSS \
955 rss += sizeof (SYM (curstackinfo)); \
956 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
957 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
958 rss += SYM (tmps_max) * sizeof (SV *); \
959 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
960 rss += SYM (scopestack_max) * sizeof (I32); \
961 rss += SYM (savestack_max) * sizeof (ANY);
962
691static size_t 963static size_t
692coro_rss (pTHX_ struct coro *coro) 964coro_rss (pTHX_ struct coro *coro)
693{ 965{
694 size_t rss = sizeof (*coro); 966 size_t rss = sizeof (*coro);
695 967
696 if (coro->mainstack) 968 if (coro->mainstack)
697 { 969 {
698 perl_slots tmp_slot;
699 perl_slots *slot;
700
701 if (coro->flags & CF_RUNNING) 970 if (coro->flags & CF_RUNNING)
702 { 971 {
703 slot = &tmp_slot; 972 #define SYM(sym) PL_ ## sym
704 973 CORO_RSS;
705 #define VAR(name,type) slot->name = PL_ ## name;
706 # include "state.h"
707 #undef VAR 974 #undef SYM
708 } 975 }
709 else 976 else
710 slot = coro->slot;
711
712 if (slot)
713 { 977 {
714 rss += sizeof (slot->curstackinfo); 978 #define SYM(sym) coro->slot->sym
715 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 979 CORO_RSS;
716 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 980 #undef SYM
717 rss += slot->tmps_max * sizeof (SV *);
718 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
719 rss += slot->scopestack_max * sizeof (I32);
720 rss += slot->savestack_max * sizeof (ANY);
721
722#if !PERL_VERSION_ATLEAST (5,10,0)
723 rss += slot->retstack_max * sizeof (OP *);
724#endif
725 } 981 }
726 } 982 }
727 983
728 return rss; 984 return rss;
729} 985}
… …
742#endif 998#endif
743 999
744/* 1000/*
745 * This overrides the default magic get method of %SIG elements. 1001 * This overrides the default magic get method of %SIG elements.
746 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1002 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
747 * and instead of tryign to save and restore the hash elements, we just provide 1003 * and instead of trying to save and restore the hash elements (extremely slow),
748 * readback here. 1004 * we just provide our own readback here.
749 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
750 * not expecting this to actually change the hook. This is a potential problem
751 * when a schedule happens then, but we ignore this.
752 */ 1005 */
753static int 1006static int ecb_cold
754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1007coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{ 1008{
756 const char *s = MgPV_nolen_const (mg); 1009 const char *s = MgPV_nolen_const (mg);
757 1010
758 if (*s == '_') 1011 if (*s == '_')
759 { 1012 {
760 SV **svp = 0; 1013 SV **svp = 0;
761 1014
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1015 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1016 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764 1017
765 if (svp) 1018 if (svp)
766 { 1019 {
767 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1020 SV *ssv;
1021
1022 if (!*svp)
1023 ssv = &PL_sv_undef;
1024 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1025 ssv = sv_2mortal (newRV_inc (*svp));
1026 else
1027 ssv = *svp;
1028
1029 sv_setsv (sv, ssv);
768 return 0; 1030 return 0;
769 } 1031 }
770 } 1032 }
771 1033
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1034 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
773} 1035}
774 1036
775static int 1037static int ecb_cold
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1038coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{ 1039{
778 const char *s = MgPV_nolen_const (mg); 1040 const char *s = MgPV_nolen_const (mg);
779 1041
780 if (*s == '_') 1042 if (*s == '_')
… …
794 } 1056 }
795 1057
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1058 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797} 1059}
798 1060
799static int 1061static int ecb_cold
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1062coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{ 1063{
802 const char *s = MgPV_nolen_const (mg); 1064 const char *s = MgPV_nolen_const (mg);
803 1065
804 if (*s == '_') 1066 if (*s == '_')
… …
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1071 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810 1072
811 if (svp) 1073 if (svp)
812 { 1074 {
813 SV *old = *svp; 1075 SV *old = *svp;
814 *svp = newSVsv (sv); 1076 *svp = SvOK (sv) ? newSVsv (sv) : 0;
815 SvREFCNT_dec (old); 1077 SvREFCNT_dec (old);
816 return 0; 1078 return 0;
817 } 1079 }
818 } 1080 }
819 1081
… …
831slf_check_nop (pTHX_ struct CoroSLF *frame) 1093slf_check_nop (pTHX_ struct CoroSLF *frame)
832{ 1094{
833 return 0; 1095 return 0;
834} 1096}
835 1097
836static UNOP coro_setup_op; 1098static int
1099slf_check_repeat (pTHX_ struct CoroSLF *frame)
1100{
1101 return 1;
1102}
837 1103
838static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1104static UNOP init_perl_op;
1105
1106ecb_noinline static void /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1107init_perl (pTHX_ struct coro *coro)
840{ 1108{
841 /* 1109 /*
842 * emulate part of the perl startup here. 1110 * emulate part of the perl startup here.
843 */ 1111 */
844 coro_init_stacks (aTHX); 1112 coro_init_stacks (aTHX);
845 1113
846 PL_runops = RUNOPS_DEFAULT; 1114 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1115 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1116 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1117 PL_comppad = 0;
1118 PL_comppad_name = 0;
1119 PL_comppad_name_fill = 0;
1120 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1121 PL_curpm = 0;
851 PL_curpad = 0; 1122 PL_curpad = 0;
852 PL_localizing = 0; 1123 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1124 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1125#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1126 PL_parser = 0;
857#endif 1127#endif
1128 PL_hints = 0;
858 1129
859 /* recreate the die/warn hooks */ 1130 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1131 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1132 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1133
863 GvSV (PL_defgv) = newSV (0); 1134 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1135 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1136 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1137 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1138 GvHV (PL_hintgv) = 0;
867 PL_rs = newSVsv (GvSV (irsgv)); 1139 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1140 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1141
870 { 1142 {
871 dSP; 1143 dSP;
… …
886 /* this newly created coroutine might be run on an existing cctx which most 1158 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1159 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 */ 1160 */
889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1161 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1162 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1163 slf_frame.destroy = 0;
891 1164
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1165 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op; 1166 init_perl_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM; 1167 init_perl_op.op_type = OP_ENTERSUB;
895 coro_setup_op.op_ppaddr = pp_slf; 1168 init_perl_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */ 1169 /* no flags etc. required, as an init function won't be called */
897 1170
898 PL_op = (OP *)&coro_setup_op; 1171 PL_op = (OP *)&init_perl_op;
899 1172
900 /* copy throw, in case it was set before coro_setup */ 1173 /* copy throw, in case it was set before init_perl */
901 CORO_THROW = coro->except; 1174 CORO_THROW = coro->except;
902}
903 1175
1176 SWAP_SVS (coro);
1177
1178 if (ecb_expect_false (enable_times))
1179 {
1180 coro_times_update ();
1181 coro_times_sub (coro);
1182 }
1183}
1184
904static void 1185static void
905coro_destruct (pTHX_ struct coro *coro) 1186coro_unwind_stacks (pTHX)
906{ 1187{
907 if (!IN_DESTRUCT) 1188 if (!IN_DESTRUCT)
908 { 1189 {
909 /* restore all saved variables and stuff */ 1190 /* restore all saved variables and stuff */
910 LEAVE_SCOPE (0); 1191 LEAVE_SCOPE (0);
… …
918 POPSTACK_TO (PL_mainstack); 1199 POPSTACK_TO (PL_mainstack);
919 1200
920 /* unwind main stack */ 1201 /* unwind main stack */
921 dounwind (-1); 1202 dounwind (-1);
922 } 1203 }
1204}
923 1205
924 SvREFCNT_dec (GvSV (PL_defgv)); 1206static void
925 SvREFCNT_dec (GvAV (PL_defgv)); 1207destroy_perl (pTHX_ struct coro *coro)
926 SvREFCNT_dec (GvSV (PL_errgv)); 1208{
927 SvREFCNT_dec (PL_defoutgv); 1209 SV *svf [9];
928 SvREFCNT_dec (PL_rs);
929 SvREFCNT_dec (GvSV (irsgv));
930 1210
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933 1211 {
1212 SV *old_current = SvRV (coro_current);
1213 struct coro *current = SvSTATE (old_current);
1214
1215 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1216
1217 save_perl (aTHX_ current);
1218
1219 /* this will cause transfer_check to croak on block*/
1220 SvRV_set (coro_current, (SV *)coro->hv);
1221
1222 load_perl (aTHX_ coro);
1223
1224 coro_unwind_stacks (aTHX);
1225
1226 /* restore swapped sv's */
1227 SWAP_SVS (coro);
1228
1229 coro_destruct_stacks (aTHX);
1230
1231 /* now save some sv's to be free'd later */
1232 svf [0] = GvSV (PL_defgv);
1233 svf [1] = (SV *)GvAV (PL_defgv);
1234 svf [2] = GvSV (PL_errgv);
1235 svf [3] = (SV *)PL_defoutgv;
1236 svf [4] = PL_rs;
1237 svf [5] = GvSV (irsgv);
1238 svf [6] = (SV *)GvHV (PL_hintgv);
1239 svf [7] = PL_diehook;
1240 svf [8] = PL_warnhook;
1241 assert (9 == sizeof (svf) / sizeof (*svf));
1242
1243 SvRV_set (coro_current, old_current);
1244
1245 load_perl (aTHX_ current);
1246 }
1247
1248 {
1249 unsigned int i;
1250
1251 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1252 SvREFCNT_dec (svf [i]);
1253
934 SvREFCNT_dec (coro->saved_deffh); 1254 SvREFCNT_dec (coro->saved_deffh);
935 SvREFCNT_dec (coro->rouse_cb); 1255 SvREFCNT_dec (coro->rouse_cb);
936 1256 SvREFCNT_dec (coro->invoke_cb);
937 coro_destruct_stacks (aTHX); 1257 SvREFCNT_dec (coro->invoke_av);
1258 }
938} 1259}
939 1260
940INLINE void 1261ecb_inline void
941free_coro_mortal (pTHX) 1262free_coro_mortal (pTHX)
942{ 1263{
943 if (expect_true (coro_mortal)) 1264 if (ecb_expect_true (coro_mortal))
944 { 1265 {
945 SvREFCNT_dec (coro_mortal); 1266 SvREFCNT_dec ((SV *)coro_mortal);
946 coro_mortal = 0; 1267 coro_mortal = 0;
947 } 1268 }
948} 1269}
949 1270
950static int 1271static int
951runops_trace (pTHX) 1272runops_trace (pTHX)
952{ 1273{
953 COP *oldcop = 0; 1274 COP *oldcop = 0;
954 int oldcxix = -2; 1275 int oldcxix = -2;
955 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
956 coro_cctx *cctx = coro->cctx;
957 1276
958 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1277 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
959 { 1278 {
960 PERL_ASYNC_CHECK (); 1279 PERL_ASYNC_CHECK ();
961 1280
962 if (cctx->flags & CC_TRACE_ALL) 1281 if (cctx_current->flags & CC_TRACE_ALL)
963 { 1282 {
964 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1283 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
965 { 1284 {
966 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1285 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
967 SV **bot, **top; 1286 SV **bot, **top;
968 AV *av = newAV (); /* return values */ 1287 AV *av = newAV (); /* return values */
969 SV **cb; 1288 SV **cb;
… …
1006 1325
1007 if (PL_curcop != &PL_compiling) 1326 if (PL_curcop != &PL_compiling)
1008 { 1327 {
1009 SV **cb; 1328 SV **cb;
1010 1329
1011 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1330 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1012 { 1331 {
1013 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1332 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1014 1333
1015 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1334 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1016 { 1335 {
1017 runops_proc_t old_runops = PL_runops;
1018 dSP; 1336 dSP;
1019 GV *gv = CvGV (cx->blk_sub.cv); 1337 GV *gv = CvGV (cx->blk_sub.cv);
1020 SV *fullname = sv_2mortal (newSV (0)); 1338 SV *fullname = sv_2mortal (newSV (0));
1021 1339
1022 if (isGV (gv)) 1340 if (isGV (gv))
… …
1040 } 1358 }
1041 1359
1042 oldcxix = cxstack_ix; 1360 oldcxix = cxstack_ix;
1043 } 1361 }
1044 1362
1045 if (cctx->flags & CC_TRACE_LINE) 1363 if (cctx_current->flags & CC_TRACE_LINE)
1046 { 1364 {
1047 dSP; 1365 dSP;
1048 1366
1049 PL_runops = RUNOPS_DEFAULT; 1367 PL_runops = RUNOPS_DEFAULT;
1050 ENTER; 1368 ENTER;
… …
1069 1387
1070 TAINT_NOT; 1388 TAINT_NOT;
1071 return 0; 1389 return 0;
1072} 1390}
1073 1391
1074static struct coro_cctx *cctx_ssl_cctx;
1075static struct CoroSLF cctx_ssl_frame; 1392static struct CoroSLF cctx_ssl_frame;
1076 1393
1077static void 1394static void
1078slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1395slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1079{ 1396{
1080 ta->prev = (struct coro *)cctx_ssl_cctx;
1081 ta->next = 0; 1397 ta->prev = 0;
1082} 1398}
1083 1399
1084static int 1400static int
1085slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1401slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1086{ 1402{
… …
1088 1404
1089 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1405 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1090} 1406}
1091 1407
1092/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1408/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1093static void NOINLINE 1409static void ecb_noinline
1094cctx_prepare (pTHX_ coro_cctx *cctx) 1410cctx_prepare (pTHX)
1095{ 1411{
1096 PL_top_env = &PL_start_env; 1412 PL_top_env = &PL_start_env;
1097 1413
1098 if (cctx->flags & CC_TRACE) 1414 if (cctx_current->flags & CC_TRACE)
1099 PL_runops = runops_trace; 1415 PL_runops = runops_trace;
1100 1416
1101 /* we already must be executing an SLF op, there is no other valid way 1417 /* we already must be executing an SLF op, there is no other valid way
1102 * that can lead to creation of a new cctx */ 1418 * that can lead to creation of a new cctx */
1103 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1419 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1104 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1420 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1105 1421
1106 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1422 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1107 cctx_ssl_cctx = cctx;
1108 cctx_ssl_frame = slf_frame; 1423 cctx_ssl_frame = slf_frame;
1109 1424
1110 slf_frame.prepare = slf_prepare_set_stacklevel; 1425 slf_frame.prepare = slf_prepare_set_stacklevel;
1111 slf_frame.check = slf_check_set_stacklevel; 1426 slf_frame.check = slf_check_set_stacklevel;
1112} 1427}
1113 1428
1114/* the tail of transfer: execute stuff we can only do after a transfer */ 1429/* the tail of transfer: execute stuff we can only do after a transfer */
1115INLINE void 1430ecb_inline void
1116transfer_tail (pTHX) 1431transfer_tail (pTHX)
1117{ 1432{
1118 free_coro_mortal (aTHX); 1433 free_coro_mortal (aTHX);
1434}
1435
1436/* try to exit the same way perl's main function would do */
1437/* we do not bother resetting the environment or other things *7
1438/* that are not, uhm, essential */
1439/* this obviously also doesn't work when perl is embedded */
1440static void ecb_noinline ecb_cold
1441perlish_exit (pTHX)
1442{
1443 int exitstatus = perl_destruct (PL_curinterp);
1444 perl_free (PL_curinterp);
1445 exit (exitstatus);
1119} 1446}
1120 1447
1121/* 1448/*
1122 * this is a _very_ stripped down perl interpreter ;) 1449 * this is a _very_ stripped down perl interpreter ;)
1123 */ 1450 */
… …
1135 /* normally we would need to skip the entersub here */ 1462 /* normally we would need to skip the entersub here */
1136 /* not doing so will re-execute it, which is exactly what we want */ 1463 /* not doing so will re-execute it, which is exactly what we want */
1137 /* PL_nop = PL_nop->op_next */ 1464 /* PL_nop = PL_nop->op_next */
1138 1465
1139 /* inject a fake subroutine call to cctx_init */ 1466 /* inject a fake subroutine call to cctx_init */
1140 cctx_prepare (aTHX_ (coro_cctx *)arg); 1467 cctx_prepare (aTHX);
1141 1468
1142 /* cctx_run is the alternative tail of transfer() */ 1469 /* cctx_run is the alternative tail of transfer() */
1143 transfer_tail (aTHX); 1470 transfer_tail (aTHX);
1144 1471
1145 /* somebody or something will hit me for both perl_run and PL_restartop */ 1472 /* somebody or something will hit me for both perl_run and PL_restartop */
1146 PL_restartop = PL_op; 1473 PL_restartop = PL_op;
1147 perl_run (PL_curinterp); 1474 perl_run (PL_curinterp);
1148 /* 1475 /*
1149 * Unfortunately, there is no way to get at the return values of the 1476 * Unfortunately, there is no way to get at the return values of the
1150 * coro body here, as perl_run destroys these 1477 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1478 * runtime errors here, as this is just a random interpreter, not a thread.
1151 */ 1479 */
1152 1480
1153 /* 1481 /*
1154 * If perl-run returns we assume exit() was being called or the coro 1482 * If perl-run returns we assume exit() was being called or the coro
1155 * fell off the end, which seems to be the only valid (non-bug) 1483 * fell off the end, which seems to be the only valid (non-bug)
1156 * reason for perl_run to return. We try to exit by jumping to the 1484 * reason for perl_run to return. We try to mimic whatever perl is normally
1157 * bootstrap-time "top" top_env, as we cannot restore the "main" 1485 * doing in that case. YMMV.
1158 * coroutine as Coro has no such concept
1159 */ 1486 */
1160 PL_top_env = main_top_env; 1487 perlish_exit (aTHX);
1161 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1162 } 1488 }
1163} 1489}
1164 1490
1165static coro_cctx * 1491static coro_cctx *
1166cctx_new () 1492cctx_new (void)
1167{ 1493{
1168 coro_cctx *cctx; 1494 coro_cctx *cctx;
1169 1495
1170 ++cctx_count; 1496 ++cctx_count;
1171 New (0, cctx, 1, coro_cctx); 1497 New (0, cctx, 1, coro_cctx);
… …
1177 return cctx; 1503 return cctx;
1178} 1504}
1179 1505
1180/* create a new cctx only suitable as source */ 1506/* create a new cctx only suitable as source */
1181static coro_cctx * 1507static coro_cctx *
1182cctx_new_empty () 1508cctx_new_empty (void)
1183{ 1509{
1184 coro_cctx *cctx = cctx_new (); 1510 coro_cctx *cctx = cctx_new ();
1185 1511
1186 cctx->sptr = 0; 1512 cctx->stack.sptr = 0;
1187 coro_create (&cctx->cctx, 0, 0, 0, 0); 1513 coro_create (&cctx->cctx, 0, 0, 0, 0);
1188 1514
1189 return cctx; 1515 return cctx;
1190} 1516}
1191 1517
1192/* create a new cctx suitable as destination/running a perl interpreter */ 1518/* create a new cctx suitable as destination/running a perl interpreter */
1193static coro_cctx * 1519static coro_cctx *
1194cctx_new_run () 1520cctx_new_run (void)
1195{ 1521{
1196 coro_cctx *cctx = cctx_new (); 1522 coro_cctx *cctx = cctx_new ();
1197 void *stack_start;
1198 size_t stack_size;
1199 1523
1200#if HAVE_MMAP 1524 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1201 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1202 /* mmap supposedly does allocate-on-write for us */
1203 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1204
1205 if (cctx->sptr != (void *)-1)
1206 {
1207 #if CORO_STACKGUARD
1208 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1209 #endif
1210 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1211 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1212 cctx->flags |= CC_MAPPED;
1213 } 1525 {
1214 else
1215#endif
1216 {
1217 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1218 New (0, cctx->sptr, cctx_stacksize, long);
1219
1220 if (!cctx->sptr)
1221 {
1222 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1526 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1223 _exit (EXIT_FAILURE); 1527 _exit (EXIT_FAILURE);
1224 }
1225
1226 stack_start = cctx->sptr;
1227 stack_size = cctx->ssize;
1228 } 1528 }
1229 1529
1230 #if CORO_USE_VALGRIND
1231 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1232 #endif
1233
1234 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1530 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1235 1531
1236 return cctx; 1532 return cctx;
1237} 1533}
1238 1534
1239static void 1535static void
1240cctx_destroy (coro_cctx *cctx) 1536cctx_destroy (coro_cctx *cctx)
1241{ 1537{
1242 if (!cctx) 1538 if (!cctx)
1243 return; 1539 return;
1244 1540
1541 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1542
1245 --cctx_count; 1543 --cctx_count;
1246 coro_destroy (&cctx->cctx); 1544 coro_destroy (&cctx->cctx);
1247 1545
1248 /* coro_transfer creates new, empty cctx's */ 1546 coro_stack_free (&cctx->stack);
1249 if (cctx->sptr)
1250 {
1251 #if CORO_USE_VALGRIND
1252 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1253 #endif
1254
1255#if HAVE_MMAP
1256 if (cctx->flags & CC_MAPPED)
1257 munmap (cctx->sptr, cctx->ssize);
1258 else
1259#endif
1260 Safefree (cctx->sptr);
1261 }
1262 1547
1263 Safefree (cctx); 1548 Safefree (cctx);
1264} 1549}
1265 1550
1266/* wether this cctx should be destructed */ 1551/* wether this cctx should be destructed */
1267#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1552#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1268 1553
1269static coro_cctx * 1554static coro_cctx *
1270cctx_get (pTHX) 1555cctx_get (pTHX)
1271{ 1556{
1272 while (expect_true (cctx_first)) 1557 while (ecb_expect_true (cctx_first))
1273 { 1558 {
1274 coro_cctx *cctx = cctx_first; 1559 coro_cctx *cctx = cctx_first;
1275 cctx_first = cctx->next; 1560 cctx_first = cctx->next;
1276 --cctx_idle; 1561 --cctx_idle;
1277 1562
1278 if (expect_true (!CCTX_EXPIRED (cctx))) 1563 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1279 return cctx; 1564 return cctx;
1280 1565
1281 cctx_destroy (cctx); 1566 cctx_destroy (cctx);
1282 } 1567 }
1283 1568
… …
1285} 1570}
1286 1571
1287static void 1572static void
1288cctx_put (coro_cctx *cctx) 1573cctx_put (coro_cctx *cctx)
1289{ 1574{
1290 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1575 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1291 1576
1292 /* free another cctx if overlimit */ 1577 /* free another cctx if overlimit */
1293 if (expect_false (cctx_idle >= cctx_max_idle)) 1578 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1294 { 1579 {
1295 coro_cctx *first = cctx_first; 1580 coro_cctx *first = cctx_first;
1296 cctx_first = first->next; 1581 cctx_first = first->next;
1297 --cctx_idle; 1582 --cctx_idle;
1298 1583
… …
1309static void 1594static void
1310transfer_check (pTHX_ struct coro *prev, struct coro *next) 1595transfer_check (pTHX_ struct coro *prev, struct coro *next)
1311{ 1596{
1312 /* TODO: throwing up here is considered harmful */ 1597 /* TODO: throwing up here is considered harmful */
1313 1598
1314 if (expect_true (prev != next)) 1599 if (ecb_expect_true (prev != next))
1315 { 1600 {
1316 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1601 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1317 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1602 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1318 1603
1319 if (expect_false (next->flags & CF_RUNNING)) 1604 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1320 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1321
1322 if (expect_false (next->flags & CF_DESTROYED))
1323 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1605 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1324 1606
1325#if !PERL_VERSION_ATLEAST (5,10,0) 1607#if !PERL_VERSION_ATLEAST (5,10,0)
1326 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1608 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1327 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1609 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1328#endif 1610#endif
1329 } 1611 }
1330} 1612}
1331 1613
1332/* always use the TRANSFER macro */ 1614/* always use the TRANSFER macro */
1333static void NOINLINE /* noinline so we have a fixed stackframe */ 1615static void ecb_noinline /* noinline so we have a fixed stackframe */
1334transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1616transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1335{ 1617{
1336 dSTACKLEVEL; 1618 dSTACKLEVEL;
1337 1619
1338 /* sometimes transfer is only called to set idle_sp */ 1620 /* sometimes transfer is only called to set idle_sp */
1339 if (expect_false (!next)) 1621 if (ecb_expect_false (!prev))
1340 { 1622 {
1341 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1623 cctx_current->idle_sp = STACKLEVEL;
1342 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1624 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1343 } 1625 }
1344 else if (expect_true (prev != next)) 1626 else if (ecb_expect_true (prev != next))
1345 { 1627 {
1346 coro_cctx *prev__cctx; 1628 coro_cctx *cctx_prev;
1347 1629
1348 if (expect_false (prev->flags & CF_NEW)) 1630 if (ecb_expect_false (prev->flags & CF_NEW))
1349 { 1631 {
1350 /* create a new empty/source context */ 1632 /* create a new empty/source context */
1351 prev->cctx = cctx_new_empty ();
1352 prev->flags &= ~CF_NEW; 1633 prev->flags &= ~CF_NEW;
1353 prev->flags |= CF_RUNNING; 1634 prev->flags |= CF_RUNNING;
1354 } 1635 }
1355 1636
1356 prev->flags &= ~CF_RUNNING; 1637 prev->flags &= ~CF_RUNNING;
1357 next->flags |= CF_RUNNING; 1638 next->flags |= CF_RUNNING;
1358 1639
1359 /* first get rid of the old state */ 1640 /* first get rid of the old state */
1360 save_perl (aTHX_ prev); 1641 save_perl (aTHX_ prev);
1361 1642
1362 if (expect_false (next->flags & CF_NEW)) 1643 if (ecb_expect_false (next->flags & CF_NEW))
1363 { 1644 {
1364 /* need to start coroutine */ 1645 /* need to start coroutine */
1365 next->flags &= ~CF_NEW; 1646 next->flags &= ~CF_NEW;
1366 /* setup coroutine call */ 1647 /* setup coroutine call */
1367 coro_setup (aTHX_ next); 1648 init_perl (aTHX_ next);
1368 } 1649 }
1369 else 1650 else
1370 load_perl (aTHX_ next); 1651 load_perl (aTHX_ next);
1371 1652
1372 prev__cctx = prev->cctx;
1373
1374 /* possibly untie and reuse the cctx */ 1653 /* possibly untie and reuse the cctx */
1375 if (expect_true ( 1654 if (ecb_expect_true (
1376 prev__cctx->idle_sp == STACKLEVEL 1655 cctx_current->idle_sp == STACKLEVEL
1377 && !(prev__cctx->flags & CC_TRACE) 1656 && !(cctx_current->flags & CC_TRACE)
1378 && !force_cctx 1657 && !force_cctx
1379 )) 1658 ))
1380 { 1659 {
1381 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1660 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1382 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1661 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1383 1662
1384 prev->cctx = 0;
1385
1386 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1663 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1387 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1664 /* without this the next cctx_get might destroy the running cctx while still in use */
1388 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1665 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1389 if (!next->cctx) 1666 if (ecb_expect_true (!next->cctx))
1390 next->cctx = cctx_get (aTHX); 1667 next->cctx = cctx_get (aTHX);
1391 1668
1392 cctx_put (prev__cctx); 1669 cctx_put (cctx_current);
1393 } 1670 }
1671 else
1672 prev->cctx = cctx_current;
1394 1673
1395 ++next->usecount; 1674 ++next->usecount;
1396 1675
1397 if (expect_true (!next->cctx)) 1676 cctx_prev = cctx_current;
1398 next->cctx = cctx_get (aTHX); 1677 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1399 1678
1400 if (expect_false (prev__cctx != next->cctx)) 1679 next->cctx = 0;
1680
1681 if (ecb_expect_false (cctx_prev != cctx_current))
1401 { 1682 {
1402 prev__cctx->top_env = PL_top_env; 1683 cctx_prev->top_env = PL_top_env;
1403 PL_top_env = next->cctx->top_env; 1684 PL_top_env = cctx_current->top_env;
1404 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1685 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1405 } 1686 }
1406 1687
1407 transfer_tail (aTHX); 1688 transfer_tail (aTHX);
1408 } 1689 }
1409} 1690}
… …
1411#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1692#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1412#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1693#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1413 1694
1414/** high level stuff ********************************************************/ 1695/** high level stuff ********************************************************/
1415 1696
1697/* this function is actually Coro, not Coro::State, but we call it from here */
1698/* because it is convenient - but it hasn't been declared yet for that reason */
1416static int 1699static void
1700coro_call_on_destroy (pTHX_ struct coro *coro);
1701
1702static void
1417coro_state_destroy (pTHX_ struct coro *coro) 1703coro_state_destroy (pTHX_ struct coro *coro)
1418{ 1704{
1419 if (coro->flags & CF_DESTROYED) 1705 if (coro->flags & CF_ZOMBIE)
1420 return 0; 1706 return;
1421 1707
1422 if (coro->on_destroy)
1423 coro->on_destroy (aTHX_ coro); 1708 slf_destroy (aTHX_ coro);
1424 1709
1425 coro->flags |= CF_DESTROYED; 1710 coro->flags |= CF_ZOMBIE;
1426 1711
1427 if (coro->flags & CF_READY) 1712 if (coro->flags & CF_READY)
1428 { 1713 {
1429 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1714 /* reduce nready, as destroying a ready coro effectively unreadies it */
1430 /* alternative: look through all ready queues and remove the coro */ 1715 /* alternative: look through all ready queues and remove the coro */
1431 --coro_nready; 1716 --coro_nready;
1432 } 1717 }
1433 else 1718 else
1434 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1719 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1435 1720
1436 if (coro->mainstack && coro->mainstack != main_mainstack) 1721 if (coro->next) coro->next->prev = coro->prev;
1437 { 1722 if (coro->prev) coro->prev->next = coro->next;
1438 struct coro temp; 1723 if (coro == coro_first) coro_first = coro->next;
1439 1724
1440 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1725 if (coro->mainstack
1441 1726 && coro->mainstack != main_mainstack
1442 save_perl (aTHX_ &temp); 1727 && coro->slot
1728 && !PL_dirty)
1443 load_perl (aTHX_ coro); 1729 destroy_perl (aTHX_ coro);
1444
1445 coro_destruct (aTHX_ coro);
1446
1447 load_perl (aTHX_ &temp);
1448
1449 coro->slot = 0;
1450 }
1451 1730
1452 cctx_destroy (coro->cctx); 1731 cctx_destroy (coro->cctx);
1453 SvREFCNT_dec (coro->startcv); 1732 SvREFCNT_dec (coro->startcv);
1454 SvREFCNT_dec (coro->args); 1733 SvREFCNT_dec (coro->args);
1734 SvREFCNT_dec (coro->swap_sv);
1455 SvREFCNT_dec (CORO_THROW); 1735 SvREFCNT_dec (CORO_THROW);
1456 1736
1457 if (coro->next) coro->next->prev = coro->prev; 1737 coro_call_on_destroy (aTHX_ coro);
1458 if (coro->prev) coro->prev->next = coro->next;
1459 if (coro == coro_first) coro_first = coro->next;
1460 1738
1461 return 1; 1739 /* more destruction mayhem in coro_state_free */
1462} 1740}
1463 1741
1464static int 1742static int
1465coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1743coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1466{ 1744{
1467 struct coro *coro = (struct coro *)mg->mg_ptr; 1745 struct coro *coro = (struct coro *)mg->mg_ptr;
1468 mg->mg_ptr = 0; 1746 mg->mg_ptr = 0;
1469 1747
1470 coro->hv = 0;
1471
1472 if (--coro->refcnt < 0)
1473 {
1474 coro_state_destroy (aTHX_ coro); 1748 coro_state_destroy (aTHX_ coro);
1749 SvREFCNT_dec (coro->on_destroy);
1750 SvREFCNT_dec (coro->status);
1751
1475 Safefree (coro); 1752 Safefree (coro);
1476 }
1477 1753
1478 return 0; 1754 return 0;
1479} 1755}
1480 1756
1481static int 1757static int ecb_cold
1482coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1758coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1483{ 1759{
1484 struct coro *coro = (struct coro *)mg->mg_ptr; 1760 /* called when perl clones the current process the slow way (windows process emulation) */
1485 1761 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1486 ++coro->refcnt; 1762 mg->mg_ptr = 0;
1763 mg->mg_virtual = 0;
1487 1764
1488 return 0; 1765 return 0;
1489} 1766}
1490 1767
1491static MGVTBL coro_state_vtbl = { 1768static MGVTBL coro_state_vtbl = {
… …
1514 1791
1515 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1792 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1516 TRANSFER (ta, 1); 1793 TRANSFER (ta, 1);
1517} 1794}
1518 1795
1519/*****************************************************************************/
1520/* gensub: simple closure generation utility */
1521
1522#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1523
1524/* create a closure from XS, returns a code reference */
1525/* the arg can be accessed via GENSUB_ARG from the callback */
1526/* the callback must use dXSARGS/XSRETURN */
1527static SV *
1528gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1529{
1530 CV *cv = (CV *)newSV (0);
1531
1532 sv_upgrade ((SV *)cv, SVt_PVCV);
1533
1534 CvANON_on (cv);
1535 CvISXSUB_on (cv);
1536 CvXSUB (cv) = xsub;
1537 GENSUB_ARG = arg;
1538
1539 return newRV_noinc ((SV *)cv);
1540}
1541
1542/** Coro ********************************************************************/ 1796/** Coro ********************************************************************/
1543 1797
1544INLINE void 1798ecb_inline void
1545coro_enq (pTHX_ struct coro *coro) 1799coro_enq (pTHX_ struct coro *coro)
1546{ 1800{
1547 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1801 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1548}
1549 1802
1550INLINE SV * 1803 SvREFCNT_inc_NN (coro->hv);
1804
1805 coro->next_ready = 0;
1806 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1807 ready [1] = coro;
1808}
1809
1810ecb_inline struct coro *
1551coro_deq (pTHX) 1811coro_deq (pTHX)
1552{ 1812{
1553 int prio; 1813 int prio;
1554 1814
1555 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1815 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1556 if (AvFILLp (coro_ready [prio]) >= 0) 1816 {
1557 return av_shift (coro_ready [prio]); 1817 struct coro **ready = coro_ready [prio];
1818
1819 if (ready [0])
1820 {
1821 struct coro *coro = ready [0];
1822 ready [0] = coro->next_ready;
1823 return coro;
1824 }
1825 }
1558 1826
1559 return 0; 1827 return 0;
1828}
1829
1830static void
1831invoke_sv_ready_hook_helper (void)
1832{
1833 dTHX;
1834 dSP;
1835
1836 ENTER;
1837 SAVETMPS;
1838
1839 PUSHMARK (SP);
1840 PUTBACK;
1841 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1842
1843 FREETMPS;
1844 LEAVE;
1560} 1845}
1561 1846
1562static int 1847static int
1563api_ready (pTHX_ SV *coro_sv) 1848api_ready (pTHX_ SV *coro_sv)
1564{ 1849{
1565 struct coro *coro;
1566 SV *sv_hook;
1567 void (*xs_hook)(void);
1568
1569 if (SvROK (coro_sv))
1570 coro_sv = SvRV (coro_sv);
1571
1572 coro = SvSTATE (coro_sv); 1850 struct coro *coro = SvSTATE (coro_sv);
1573 1851
1574 if (coro->flags & CF_READY) 1852 if (coro->flags & CF_READY)
1575 return 0; 1853 return 0;
1576 1854
1577 coro->flags |= CF_READY; 1855 coro->flags |= CF_READY;
1578 1856
1579 sv_hook = coro_nready ? 0 : coro_readyhook;
1580 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1581
1582 coro_enq (aTHX_ coro); 1857 coro_enq (aTHX_ coro);
1583 ++coro_nready;
1584 1858
1585 if (sv_hook) 1859 if (!coro_nready++)
1586 { 1860 if (coroapi.readyhook)
1587 dSP; 1861 coroapi.readyhook ();
1588
1589 ENTER;
1590 SAVETMPS;
1591
1592 PUSHMARK (SP);
1593 PUTBACK;
1594 call_sv (sv_hook, G_VOID | G_DISCARD);
1595
1596 FREETMPS;
1597 LEAVE;
1598 }
1599
1600 if (xs_hook)
1601 xs_hook ();
1602 1862
1603 return 1; 1863 return 1;
1604} 1864}
1605 1865
1606static int 1866static int
1607api_is_ready (pTHX_ SV *coro_sv) 1867api_is_ready (pTHX_ SV *coro_sv)
1608{ 1868{
1609 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1869 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1610} 1870}
1611 1871
1612INLINE void 1872/* expects to own a reference to next->hv */
1873ecb_inline void
1613prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1874prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1614{ 1875{
1615 SV *prev_sv, *next_sv;
1616
1617 for (;;)
1618 {
1619 next_sv = coro_deq (aTHX);
1620
1621 /* nothing to schedule: call the idle handler */
1622 if (expect_false (!next_sv))
1623 {
1624 dSP;
1625
1626 ENTER;
1627 SAVETMPS;
1628
1629 PUSHMARK (SP);
1630 PUTBACK;
1631 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1632
1633 FREETMPS;
1634 LEAVE;
1635 continue;
1636 }
1637
1638 ta->next = SvSTATE_hv (next_sv);
1639
1640 /* cannot transfer to destroyed coros, skip and look for next */
1641 if (expect_false (ta->next->flags & CF_DESTROYED))
1642 {
1643 SvREFCNT_dec (next_sv);
1644 /* coro_nready has already been taken care of by destroy */
1645 continue;
1646 }
1647
1648 --coro_nready;
1649 break;
1650 }
1651
1652 /* free this only after the transfer */
1653 prev_sv = SvRV (coro_current); 1876 SV *prev_sv = SvRV (coro_current);
1877
1654 ta->prev = SvSTATE_hv (prev_sv); 1878 ta->prev = SvSTATE_hv (prev_sv);
1879 ta->next = next;
1880
1655 TRANSFER_CHECK (*ta); 1881 TRANSFER_CHECK (*ta);
1656 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1882
1657 ta->next->flags &= ~CF_READY;
1658 SvRV_set (coro_current, next_sv); 1883 SvRV_set (coro_current, (SV *)next->hv);
1659 1884
1660 free_coro_mortal (aTHX); 1885 free_coro_mortal (aTHX);
1661 coro_mortal = prev_sv; 1886 coro_mortal = prev_sv;
1662} 1887}
1663 1888
1664INLINE void 1889static void
1890prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1891{
1892 for (;;)
1893 {
1894 struct coro *next = coro_deq (aTHX);
1895
1896 if (ecb_expect_true (next))
1897 {
1898 /* cannot transfer to destroyed coros, skip and look for next */
1899 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1900 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1901 else
1902 {
1903 next->flags &= ~CF_READY;
1904 --coro_nready;
1905
1906 prepare_schedule_to (aTHX_ ta, next);
1907 break;
1908 }
1909 }
1910 else
1911 {
1912 /* nothing to schedule: call the idle handler */
1913 if (SvROK (sv_idle)
1914 && SvOBJECT (SvRV (sv_idle)))
1915 {
1916 if (SvRV (sv_idle) == SvRV (coro_current))
1917 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1918
1919 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1920 api_ready (aTHX_ SvRV (sv_idle));
1921 --coro_nready;
1922 }
1923 else
1924 {
1925 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1926 dSP;
1927
1928 ENTER;
1929 SAVETMPS;
1930
1931 PUSHMARK (SP);
1932 PUTBACK;
1933 call_sv (sv_idle, G_VOID | G_DISCARD);
1934
1935 FREETMPS;
1936 LEAVE;
1937 }
1938 }
1939 }
1940}
1941
1942ecb_inline void
1665prepare_cede (pTHX_ struct coro_transfer_args *ta) 1943prepare_cede (pTHX_ struct coro_transfer_args *ta)
1666{ 1944{
1667 api_ready (aTHX_ coro_current); 1945 api_ready (aTHX_ coro_current);
1668 prepare_schedule (aTHX_ ta); 1946 prepare_schedule (aTHX_ ta);
1669} 1947}
1670 1948
1671INLINE void 1949ecb_inline void
1672prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1950prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1673{ 1951{
1674 SV *prev = SvRV (coro_current); 1952 SV *prev = SvRV (coro_current);
1675 1953
1676 if (coro_nready) 1954 if (coro_nready)
… …
1689 1967
1690 prepare_schedule (aTHX_ &ta); 1968 prepare_schedule (aTHX_ &ta);
1691 TRANSFER (ta, 1); 1969 TRANSFER (ta, 1);
1692} 1970}
1693 1971
1972static void
1973api_schedule_to (pTHX_ SV *coro_sv)
1974{
1975 struct coro_transfer_args ta;
1976 struct coro *next = SvSTATE (coro_sv);
1977
1978 SvREFCNT_inc_NN (coro_sv);
1979 prepare_schedule_to (aTHX_ &ta, next);
1980}
1981
1694static int 1982static int
1695api_cede (pTHX) 1983api_cede (pTHX)
1696{ 1984{
1697 struct coro_transfer_args ta; 1985 struct coro_transfer_args ta;
1698 1986
1699 prepare_cede (aTHX_ &ta); 1987 prepare_cede (aTHX_ &ta);
1700 1988
1701 if (expect_true (ta.prev != ta.next)) 1989 if (ecb_expect_true (ta.prev != ta.next))
1702 { 1990 {
1703 TRANSFER (ta, 1); 1991 TRANSFER (ta, 1);
1704 return 1; 1992 return 1;
1705 } 1993 }
1706 else 1994 else
… …
1725static void 2013static void
1726api_trace (pTHX_ SV *coro_sv, int flags) 2014api_trace (pTHX_ SV *coro_sv, int flags)
1727{ 2015{
1728 struct coro *coro = SvSTATE (coro_sv); 2016 struct coro *coro = SvSTATE (coro_sv);
1729 2017
2018 if (coro->flags & CF_RUNNING)
2019 croak ("cannot enable tracing on a running coroutine, caught");
2020
1730 if (flags & CC_TRACE) 2021 if (flags & CC_TRACE)
1731 { 2022 {
1732 if (!coro->cctx) 2023 if (!coro->cctx)
1733 coro->cctx = cctx_new_run (); 2024 coro->cctx = cctx_new_run ();
1734 else if (!(coro->cctx->flags & CC_TRACE)) 2025 else if (!(coro->cctx->flags & CC_TRACE))
1735 croak ("cannot enable tracing on coroutine with custom stack,"); 2026 croak ("cannot enable tracing on coroutine with custom stack, caught");
1736 2027
1737 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2028 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1738 } 2029 }
1739 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2030 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1740 { 2031 {
… …
1745 else 2036 else
1746 coro->slot->runops = RUNOPS_DEFAULT; 2037 coro->slot->runops = RUNOPS_DEFAULT;
1747 } 2038 }
1748} 2039}
1749 2040
2041static void
2042coro_push_av (pTHX_ AV *av, I32 gimme_v)
2043{
2044 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2045 {
2046 dSP;
2047
2048 if (gimme_v == G_SCALAR)
2049 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2050 else
2051 {
2052 int i;
2053 EXTEND (SP, AvFILLp (av) + 1);
2054
2055 for (i = 0; i <= AvFILLp (av); ++i)
2056 PUSHs (AvARRAY (av)[i]);
2057 }
2058
2059 PUTBACK;
2060 }
2061}
2062
2063static void
2064coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2065{
2066 if (!coro->on_destroy)
2067 coro->on_destroy = newAV ();
2068
2069 av_push (coro->on_destroy, cb);
2070}
2071
2072static void
2073slf_destroy_join (pTHX_ struct CoroSLF *frame)
2074{
2075 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2076}
2077
2078static int
2079slf_check_join (pTHX_ struct CoroSLF *frame)
2080{
2081 struct coro *coro = (struct coro *)frame->data;
2082
2083 if (!coro->status)
2084 return 1;
2085
2086 frame->destroy = 0;
2087
2088 coro_push_av (aTHX_ coro->status, GIMME_V);
2089
2090 SvREFCNT_dec ((SV *)coro->hv);
2091
2092 return 0;
2093}
2094
2095static void
2096slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2097{
2098 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2099
2100 if (items > 1)
2101 croak ("join called with too many arguments");
2102
2103 if (coro->status)
2104 frame->prepare = prepare_nop;
2105 else
2106 {
2107 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2108 frame->prepare = prepare_schedule;
2109 }
2110
2111 frame->check = slf_check_join;
2112 frame->destroy = slf_destroy_join;
2113 frame->data = (void *)coro;
2114 SvREFCNT_inc (coro->hv);
2115}
2116
2117static void
2118coro_call_on_destroy (pTHX_ struct coro *coro)
2119{
2120 AV *od = coro->on_destroy;
2121
2122 if (!od)
2123 return;
2124
2125 coro->on_destroy = 0;
2126 sv_2mortal ((SV *)od);
2127
2128 while (AvFILLp (od) >= 0)
2129 {
2130 SV *cb = sv_2mortal (av_pop (od));
2131
2132 /* coro hv's (and only hv's at the moment) are supported as well */
2133 if (SvSTATEhv_p (aTHX_ cb))
2134 api_ready (aTHX_ cb);
2135 else
2136 {
2137 dSP; /* don't disturb outer sp */
2138 PUSHMARK (SP);
2139
2140 if (coro->status)
2141 {
2142 PUTBACK;
2143 coro_push_av (aTHX_ coro->status, G_ARRAY);
2144 SPAGAIN;
2145 }
2146
2147 PUTBACK;
2148 call_sv (cb, G_VOID | G_DISCARD);
2149 }
2150 }
2151}
2152
2153static void
2154coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2155{
2156 AV *av;
2157
2158 if (coro->status)
2159 {
2160 av = coro->status;
2161 av_clear (av);
2162 }
2163 else
2164 av = coro->status = newAV ();
2165
2166 /* items are actually not so common, so optimise for this case */
2167 if (items)
2168 {
2169 int i;
2170
2171 av_extend (av, items - 1);
2172
2173 for (i = 0; i < items; ++i)
2174 av_push (av, SvREFCNT_inc_NN (arg [i]));
2175 }
2176}
2177
2178static void
2179slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2180{
2181 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2182 api_ready (aTHX_ sv_manager);
2183
2184 frame->prepare = prepare_schedule;
2185 frame->check = slf_check_repeat;
2186
2187 /* as a minor optimisation, we could unwind all stacks here */
2188 /* but that puts extra pressure on pp_slf, and is not worth much */
2189 /*coro_unwind_stacks (aTHX);*/
2190}
2191
2192static void
2193slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2194{
2195 HV *coro_hv = (HV *)SvRV (coro_current);
2196
2197 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2198 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2199}
2200
2201static void
2202slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2203{
2204 HV *coro_hv;
2205 struct coro *coro;
2206
2207 if (items <= 0)
2208 croak ("Coro::cancel called without coro object,");
2209
2210 coro = SvSTATE (arg [0]);
2211 coro_hv = coro->hv;
2212
2213 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2214
2215 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2216 {
2217 /* coro currently busy cancelling something, so just notify it */
2218 coro->slf_frame.data = (void *)coro;
2219
2220 frame->prepare = prepare_nop;
2221 frame->check = slf_check_nop;
2222 }
2223 else if (coro_hv == (HV *)SvRV (coro_current))
2224 {
2225 /* cancelling the current coro is allowed, and equals terminate */
2226 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2227 }
2228 else
2229 {
2230 struct coro *self = SvSTATE_current;
2231
2232 /* otherwise we cancel directly, purely for speed reasons
2233 * unfortunately, this requires some magic trickery, as
2234 * somebody else could cancel us, so we have to fight the cancellation.
2235 * this is ugly, and hopefully fully worth the extra speed.
2236 * besides, I can't get the slow-but-safe version working...
2237 */
2238 slf_frame.data = 0;
2239 self->flags |= CF_NOCANCEL;
2240 coro_state_destroy (aTHX_ coro);
2241 self->flags &= ~CF_NOCANCEL;
2242
2243 if (slf_frame.data)
2244 {
2245 /* while we were busy we have been cancelled, so terminate */
2246 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2247 }
2248 else
2249 {
2250 frame->prepare = prepare_nop;
2251 frame->check = slf_check_nop;
2252 }
2253 }
2254}
2255
2256static int
2257slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2258{
2259 frame->prepare = 0;
2260 coro_unwind_stacks (aTHX);
2261
2262 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2263
2264 return 1;
2265}
2266
2267static int
2268safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2269{
2270 if (coro->cctx)
2271 croak ("coro inside C callback, unable to cancel at this time, caught");
2272
2273 if (coro->flags & CF_NEW)
2274 {
2275 coro_set_status (aTHX_ coro, arg, items);
2276 coro_state_destroy (aTHX_ coro);
2277 }
2278 else
2279 {
2280 if (!coro->slf_frame.prepare)
2281 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2282
2283 slf_destroy (aTHX_ coro);
2284
2285 coro_set_status (aTHX_ coro, arg, items);
2286 coro->slf_frame.prepare = prepare_nop;
2287 coro->slf_frame.check = slf_check_safe_cancel;
2288
2289 api_ready (aTHX_ (SV *)coro->hv);
2290 }
2291
2292 return 1;
2293}
2294
2295/*****************************************************************************/
2296/* async pool handler */
2297
2298static int
2299slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2300{
2301 HV *hv = (HV *)SvRV (coro_current);
2302 struct coro *coro = (struct coro *)frame->data;
2303
2304 if (!coro->invoke_cb)
2305 return 1; /* loop till we have invoke */
2306 else
2307 {
2308 hv_store (hv, "desc", sizeof ("desc") - 1,
2309 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2310
2311 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2312
2313 {
2314 dSP;
2315 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2316 PUTBACK;
2317 }
2318
2319 SvREFCNT_dec (GvAV (PL_defgv));
2320 GvAV (PL_defgv) = coro->invoke_av;
2321 coro->invoke_av = 0;
2322
2323 return 0;
2324 }
2325}
2326
2327static void
2328slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2329{
2330 HV *hv = (HV *)SvRV (coro_current);
2331 struct coro *coro = SvSTATE_hv ((SV *)hv);
2332
2333 if (ecb_expect_true (coro->saved_deffh))
2334 {
2335 /* subsequent iteration */
2336 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2337 coro->saved_deffh = 0;
2338
2339 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2340 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2341 {
2342 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2343 return;
2344 }
2345 else
2346 {
2347 av_clear (GvAV (PL_defgv));
2348 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2349
2350 coro->prio = 0;
2351
2352 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2353 api_trace (aTHX_ coro_current, 0);
2354
2355 frame->prepare = prepare_schedule;
2356 av_push (av_async_pool, SvREFCNT_inc (hv));
2357 }
2358 }
2359 else
2360 {
2361 /* first iteration, simply fall through */
2362 frame->prepare = prepare_nop;
2363 }
2364
2365 frame->check = slf_check_pool_handler;
2366 frame->data = (void *)coro;
2367}
2368
1750/*****************************************************************************/ 2369/*****************************************************************************/
1751/* rouse callback */ 2370/* rouse callback */
1752 2371
1753#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2372#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1754 2373
1755static void 2374static void
1756coro_rouse_callback (pTHX_ CV *cv) 2375coro_rouse_callback (pTHX_ CV *cv)
1757{ 2376{
1758 dXSARGS; 2377 dXSARGS;
1759 SV *data = (SV *)GENSUB_ARG; 2378 SV *data = (SV *)S_GENSUB_ARG;
1760 2379
1761 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2380 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1762 { 2381 {
1763 /* first call, set args */ 2382 /* first call, set args */
1764 int i; 2383 SV *coro = SvRV (data);
1765 AV *av = newAV (); 2384 AV *av = newAV ();
1766 SV *coro = SvRV (data);
1767 2385
1768 SvRV_set (data, (SV *)av); 2386 SvRV_set (data, (SV *)av);
1769 api_ready (aTHX_ coro);
1770 SvREFCNT_dec (coro);
1771 2387
1772 /* better take a full copy of the arguments */ 2388 /* better take a full copy of the arguments */
1773 while (items--) 2389 while (items--)
1774 av_store (av, items, newSVsv (ST (items))); 2390 av_store (av, items, newSVsv (ST (items)));
2391
2392 api_ready (aTHX_ coro);
2393 SvREFCNT_dec (coro);
1775 } 2394 }
1776 2395
1777 XSRETURN_EMPTY; 2396 XSRETURN_EMPTY;
1778} 2397}
1779 2398
1780static int 2399static int
1781slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2400slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1782{ 2401{
1783 SV *data = (SV *)frame->data; 2402 SV *data = (SV *)frame->data;
1784 2403
1785 if (CORO_THROW) 2404 if (CORO_THROW)
1786 return 0; 2405 return 0;
1787 2406
1788 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2407 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1789 return 1; 2408 return 1;
… …
1796 2415
1797 EXTEND (SP, AvFILLp (av) + 1); 2416 EXTEND (SP, AvFILLp (av) + 1);
1798 for (i = 0; i <= AvFILLp (av); ++i) 2417 for (i = 0; i <= AvFILLp (av); ++i)
1799 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2418 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1800 2419
1801 /* we have stolen the elements, so ste length to zero and free */ 2420 /* we have stolen the elements, so set length to zero and free */
1802 AvFILLp (av) = -1; 2421 AvFILLp (av) = -1;
1803 av_undef (av); 2422 av_undef (av);
1804 2423
1805 PUTBACK; 2424 PUTBACK;
1806 } 2425 }
… …
1825 cb = sv_2mortal (coro->rouse_cb); 2444 cb = sv_2mortal (coro->rouse_cb);
1826 coro->rouse_cb = 0; 2445 coro->rouse_cb = 0;
1827 } 2446 }
1828 2447
1829 if (!SvROK (cb) 2448 if (!SvROK (cb)
1830 || SvTYPE (SvRV (cb)) != SVt_PVCV 2449 || SvTYPE (SvRV (cb)) != SVt_PVCV
1831 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2450 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1832 croak ("Coro::rouse_wait called with illegal callback argument,"); 2451 croak ("Coro::rouse_wait called with illegal callback argument,");
1833 2452
1834 { 2453 {
1835 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2454 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1836 SV *data = (SV *)GENSUB_ARG; 2455 SV *data = (SV *)S_GENSUB_ARG;
1837 2456
1838 frame->data = (void *)data; 2457 frame->data = (void *)data;
1839 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2458 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1840 frame->check = slf_check_rouse_wait; 2459 frame->check = slf_check_rouse_wait;
1841 } 2460 }
… …
1845coro_new_rouse_cb (pTHX) 2464coro_new_rouse_cb (pTHX)
1846{ 2465{
1847 HV *hv = (HV *)SvRV (coro_current); 2466 HV *hv = (HV *)SvRV (coro_current);
1848 struct coro *coro = SvSTATE_hv (hv); 2467 struct coro *coro = SvSTATE_hv (hv);
1849 SV *data = newRV_inc ((SV *)hv); 2468 SV *data = newRV_inc ((SV *)hv);
1850 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2469 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1851 2470
1852 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2471 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1853 SvREFCNT_dec (data); /* magicext increases the refcount */ 2472 SvREFCNT_dec (data); /* magicext increases the refcount */
1854 2473
1855 SvREFCNT_dec (coro->rouse_cb); 2474 SvREFCNT_dec (coro->rouse_cb);
… …
1913 frame->prepare = prepare_schedule; 2532 frame->prepare = prepare_schedule;
1914 frame->check = slf_check_nop; 2533 frame->check = slf_check_nop;
1915} 2534}
1916 2535
1917static void 2536static void
2537slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2538{
2539 struct coro *next = (struct coro *)slf_frame.data;
2540
2541 SvREFCNT_inc_NN (next->hv);
2542 prepare_schedule_to (aTHX_ ta, next);
2543}
2544
2545static void
2546slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2547{
2548 if (!items)
2549 croak ("Coro::schedule_to expects a coroutine argument, caught");
2550
2551 frame->data = (void *)SvSTATE (arg [0]);
2552 frame->prepare = slf_prepare_schedule_to;
2553 frame->check = slf_check_nop;
2554}
2555
2556static void
2557slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2558{
2559 api_ready (aTHX_ SvRV (coro_current));
2560
2561 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2562}
2563
2564static void
1918slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2565slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1919{ 2566{
1920 frame->prepare = prepare_cede; 2567 frame->prepare = prepare_cede;
1921 frame->check = slf_check_nop; 2568 frame->check = slf_check_nop;
1922} 2569}
… …
1924static void 2571static void
1925slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2572slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1926{ 2573{
1927 frame->prepare = prepare_cede_notself; 2574 frame->prepare = prepare_cede_notself;
1928 frame->check = slf_check_nop; 2575 frame->check = slf_check_nop;
2576}
2577
2578/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2579static void
2580slf_destroy (pTHX_ struct coro *coro)
2581{
2582 /* this callback is reserved for slf functions needing to do cleanup */
2583 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2584 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2585
2586 /*
2587 * The on_destroy above most likely is from an SLF call.
2588 * Since by definition the SLF call will not finish when we destroy
2589 * the coro, we will have to force-finish it here, otherwise
2590 * cleanup functions cannot call SLF functions.
2591 */
2592 coro->slf_frame.prepare = 0;
1929} 2593}
1930 2594
1931/* 2595/*
1932 * these not obviously related functions are all rolled into one 2596 * these not obviously related functions are all rolled into one
1933 * function to increase chances that they all will call transfer with the same 2597 * function to increase chances that they all will call transfer with the same
… …
1940 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2604 I32 checkmark; /* mark SP to see how many elements check has pushed */
1941 2605
1942 /* set up the slf frame, unless it has already been set-up */ 2606 /* set up the slf frame, unless it has already been set-up */
1943 /* the latter happens when a new coro has been started */ 2607 /* the latter happens when a new coro has been started */
1944 /* or when a new cctx was attached to an existing coroutine */ 2608 /* or when a new cctx was attached to an existing coroutine */
1945 if (expect_true (!slf_frame.prepare)) 2609 if (ecb_expect_true (!slf_frame.prepare))
1946 { 2610 {
1947 /* first iteration */ 2611 /* first iteration */
1948 dSP; 2612 dSP;
1949 SV **arg = PL_stack_base + TOPMARK + 1; 2613 SV **arg = PL_stack_base + TOPMARK + 1;
1950 int items = SP - arg; /* args without function object */ 2614 int items = SP - arg; /* args without function object */
… …
1991 while (slf_frame.check (aTHX_ &slf_frame)); 2655 while (slf_frame.check (aTHX_ &slf_frame));
1992 2656
1993 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2657 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1994 2658
1995 /* exception handling */ 2659 /* exception handling */
1996 if (expect_false (CORO_THROW)) 2660 if (ecb_expect_false (CORO_THROW))
1997 { 2661 {
1998 SV *exception = sv_2mortal (CORO_THROW); 2662 SV *exception = sv_2mortal (CORO_THROW);
1999 2663
2000 CORO_THROW = 0; 2664 CORO_THROW = 0;
2001 sv_setsv (ERRSV, exception); 2665 sv_setsv (ERRSV, exception);
2002 croak (0); 2666 croak (0);
2003 } 2667 }
2004 2668
2005 /* return value handling - mostly like entersub */ 2669 /* return value handling - mostly like entersub */
2006 /* make sure we put something on the stack in scalar context */ 2670 /* make sure we put something on the stack in scalar context */
2007 if (GIMME_V == G_SCALAR) 2671 if (GIMME_V == G_SCALAR
2672 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2008 { 2673 {
2009 dSP; 2674 dSP;
2010 SV **bot = PL_stack_base + checkmark; 2675 SV **bot = PL_stack_base + checkmark;
2011 2676
2012 if (sp == bot) /* too few, push undef */ 2677 if (sp == bot) /* too few, push undef */
2013 bot [1] = &PL_sv_undef; 2678 bot [1] = &PL_sv_undef;
2014 else if (sp != bot + 1) /* too many, take last one */ 2679 else /* too many, take last one */
2015 bot [1] = *sp; 2680 bot [1] = *sp;
2016 2681
2017 SP = bot + 1; 2682 SP = bot + 1;
2018 2683
2019 PUTBACK; 2684 PUTBACK;
… …
2052 if (PL_op->op_flags & OPf_STACKED) 2717 if (PL_op->op_flags & OPf_STACKED)
2053 { 2718 {
2054 if (items > slf_arga) 2719 if (items > slf_arga)
2055 { 2720 {
2056 slf_arga = items; 2721 slf_arga = items;
2057 free (slf_argv); 2722 Safefree (slf_argv);
2058 slf_argv = malloc (slf_arga * sizeof (SV *)); 2723 New (0, slf_argv, slf_arga, SV *);
2059 } 2724 }
2060 2725
2061 slf_argc = items; 2726 slf_argc = items;
2062 2727
2063 for (i = 0; i < items; ++i) 2728 for (i = 0; i < items; ++i)
… …
2065 } 2730 }
2066 else 2731 else
2067 slf_argc = 0; 2732 slf_argc = 0;
2068 2733
2069 PL_op->op_ppaddr = pp_slf; 2734 PL_op->op_ppaddr = pp_slf;
2070 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2735 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2071 2736
2072 PL_op = (OP *)&slf_restore; 2737 PL_op = (OP *)&slf_restore;
2738}
2739
2740/*****************************************************************************/
2741/* dynamic wind */
2742
2743static void
2744on_enterleave_call (pTHX_ SV *cb)
2745{
2746 dSP;
2747
2748 PUSHSTACK;
2749
2750 PUSHMARK (SP);
2751 PUTBACK;
2752 call_sv (cb, G_VOID | G_DISCARD);
2753 SPAGAIN;
2754
2755 POPSTACK;
2756}
2757
2758static SV *
2759coro_avp_pop_and_free (pTHX_ AV **avp)
2760{
2761 AV *av = *avp;
2762 SV *res = av_pop (av);
2763
2764 if (AvFILLp (av) < 0)
2765 {
2766 *avp = 0;
2767 SvREFCNT_dec (av);
2768 }
2769
2770 return res;
2771}
2772
2773static void
2774coro_pop_on_enter (pTHX_ void *coro)
2775{
2776 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2777 SvREFCNT_dec (cb);
2778}
2779
2780static void
2781coro_pop_on_leave (pTHX_ void *coro)
2782{
2783 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2784 on_enterleave_call (aTHX_ sv_2mortal (cb));
2073} 2785}
2074 2786
2075/*****************************************************************************/ 2787/*****************************************************************************/
2076/* PerlIO::cede */ 2788/* PerlIO::cede */
2077 2789
… …
2079{ 2791{
2080 PerlIOBuf base; 2792 PerlIOBuf base;
2081 NV next, every; 2793 NV next, every;
2082} PerlIOCede; 2794} PerlIOCede;
2083 2795
2084static IV 2796static IV ecb_cold
2085PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2797PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2086{ 2798{
2087 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2799 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2088 2800
2089 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2801 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2090 self->next = nvtime () + self->every; 2802 self->next = nvtime () + self->every;
2091 2803
2092 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2804 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2093} 2805}
2094 2806
2095static SV * 2807static SV * ecb_cold
2096PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2808PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2097{ 2809{
2098 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2810 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2099 2811
2100 return newSVnv (self->every); 2812 return newSVnv (self->every);
… …
2151/* Coro::Semaphore & Coro::Signal */ 2863/* Coro::Semaphore & Coro::Signal */
2152 2864
2153static SV * 2865static SV *
2154coro_waitarray_new (pTHX_ int count) 2866coro_waitarray_new (pTHX_ int count)
2155{ 2867{
2156 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 2868 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2157 AV *av = newAV (); 2869 AV *av = newAV ();
2158 SV **ary; 2870 SV **ary;
2159 2871
2160 /* unfortunately, building manually saves memory */ 2872 /* unfortunately, building manually saves memory */
2161 Newx (ary, 2, SV *); 2873 Newx (ary, 2, SV *);
2162 AvALLOC (av) = ary; 2874 AvALLOC (av) = ary;
2875#if PERL_VERSION_ATLEAST (5,10,0)
2163 /*AvARRAY (av) = ary;*/ 2876 AvARRAY (av) = ary;
2877#else
2164 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 2878 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2879 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2880 SvPVX ((SV *)av) = (char *)ary;
2881#endif
2165 AvMAX (av) = 1; 2882 AvMAX (av) = 1;
2166 AvFILLp (av) = 0; 2883 AvFILLp (av) = 0;
2167 ary [0] = newSViv (count); 2884 ary [0] = newSViv (count);
2168 2885
2169 return newRV_noinc ((SV *)av); 2886 return newRV_noinc ((SV *)av);
… …
2207 SvREFCNT_dec (cb); 2924 SvREFCNT_dec (cb);
2208 } 2925 }
2209} 2926}
2210 2927
2211static void 2928static void
2212coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2929coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2213{ 2930{
2214 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2931 /* call $sem->adjust (0) to possibly wake up some other waiters */
2215 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2932 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2216} 2933}
2217 2934
2218static int 2935static int
2219slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 2936slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2220{ 2937{
2221 AV *av = (AV *)frame->data; 2938 AV *av = (AV *)frame->data;
2222 SV *count_sv = AvARRAY (av)[0]; 2939 SV *count_sv = AvARRAY (av)[0];
2940 SV *coro_hv = SvRV (coro_current);
2223 2941
2224 /* if we are about to throw, don't actually acquire the lock, just throw */ 2942 /* if we are about to throw, don't actually acquire the lock, just throw */
2225 if (CORO_THROW) 2943 if (CORO_THROW)
2226 return 0; 2944 return 0;
2227 else if (SvIVX (count_sv) > 0) 2945 else if (SvIVX (count_sv) > 0)
2228 { 2946 {
2229 SvSTATE_current->on_destroy = 0; 2947 frame->destroy = 0;
2230 2948
2231 if (acquire) 2949 if (acquire)
2232 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2950 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2233 else 2951 else
2234 coro_semaphore_adjust (aTHX_ av, 0); 2952 coro_semaphore_adjust (aTHX_ av, 0);
… …
2239 { 2957 {
2240 int i; 2958 int i;
2241 /* if we were woken up but can't down, we look through the whole */ 2959 /* if we were woken up but can't down, we look through the whole */
2242 /* waiters list and only add us if we aren't in there already */ 2960 /* waiters list and only add us if we aren't in there already */
2243 /* this avoids some degenerate memory usage cases */ 2961 /* this avoids some degenerate memory usage cases */
2244 2962 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2245 for (i = 1; i <= AvFILLp (av); ++i)
2246 if (AvARRAY (av)[i] == SvRV (coro_current)) 2963 if (AvARRAY (av)[i] == coro_hv)
2247 return 1; 2964 return 1;
2248 2965
2249 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2966 av_push (av, SvREFCNT_inc (coro_hv));
2250 return 1; 2967 return 1;
2251 } 2968 }
2252} 2969}
2253 2970
2254static int 2971static int
… …
2277 { 2994 {
2278 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2995 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2279 2996
2280 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2997 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2281 frame->prepare = prepare_schedule; 2998 frame->prepare = prepare_schedule;
2282
2283 /* to avoid race conditions when a woken-up coro gets terminated */ 2999 /* to avoid race conditions when a woken-up coro gets terminated */
2284 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3000 /* we arrange for a temporary on_destroy that calls adjust (0) */
2285 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3001 frame->destroy = coro_semaphore_destroy;
2286 } 3002 }
2287} 3003}
2288 3004
2289static void 3005static void
2290slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3006slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2298{ 3014{
2299 if (items >= 2) 3015 if (items >= 2)
2300 { 3016 {
2301 /* callback form */ 3017 /* callback form */
2302 AV *av = (AV *)SvRV (arg [0]); 3018 AV *av = (AV *)SvRV (arg [0]);
2303 CV *cb_cv = coro_sv_2cv (arg [1]); 3019 SV *cb_cv = s_get_cv_croak (arg [1]);
2304 3020
2305 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3021 av_push (av, SvREFCNT_inc_NN (cb_cv));
2306 3022
2307 if (SvIVX (AvARRAY (av)[0]) > 0) 3023 if (SvIVX (AvARRAY (av)[0]) > 0)
2308 coro_semaphore_adjust (aTHX_ av, 0); 3024 coro_semaphore_adjust (aTHX_ av, 0);
2309 3025
2310 frame->prepare = prepare_nop; 3026 frame->prepare = prepare_nop;
… …
2334 AvARRAY (av)[0] = AvARRAY (av)[1]; 3050 AvARRAY (av)[0] = AvARRAY (av)[1];
2335 AvARRAY (av)[1] = cb; 3051 AvARRAY (av)[1] = cb;
2336 3052
2337 cb = av_shift (av); 3053 cb = av_shift (av);
2338 3054
3055 if (SvTYPE (cb) == SVt_PVCV)
3056 {
3057 dSP;
3058 PUSHMARK (SP);
3059 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3060 PUTBACK;
3061 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3062 }
3063 else
3064 {
2339 api_ready (aTHX_ cb); 3065 api_ready (aTHX_ cb);
2340 sv_setiv (cb, 0); /* signal waiter */ 3066 sv_setiv (cb, 0); /* signal waiter */
3067 }
3068
2341 SvREFCNT_dec (cb); 3069 SvREFCNT_dec (cb);
2342 3070
2343 --count; 3071 --count;
2344 } 3072 }
2345} 3073}
… …
2354static void 3082static void
2355slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3083slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2356{ 3084{
2357 AV *av = (AV *)SvRV (arg [0]); 3085 AV *av = (AV *)SvRV (arg [0]);
2358 3086
3087 if (items >= 2)
3088 {
3089 SV *cb_cv = s_get_cv_croak (arg [1]);
3090 av_push (av, SvREFCNT_inc_NN (cb_cv));
3091
2359 if (SvIVX (AvARRAY (av)[0])) 3092 if (SvIVX (AvARRAY (av)[0]))
3093 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3094
3095 frame->prepare = prepare_nop;
3096 frame->check = slf_check_nop;
3097 }
3098 else if (SvIVX (AvARRAY (av)[0]))
2360 { 3099 {
2361 SvIVX (AvARRAY (av)[0]) = 0; 3100 SvIVX (AvARRAY (av)[0]) = 0;
2362 frame->prepare = prepare_nop; 3101 frame->prepare = prepare_nop;
2363 frame->check = slf_check_nop; 3102 frame->check = slf_check_nop;
2364 } 3103 }
2365 else 3104 else
2366 { 3105 {
2367 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3106 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2368 3107
2369 av_push (av, waiter); 3108 av_push (av, waiter);
2370 3109
2371 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3110 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2372 frame->prepare = prepare_schedule; 3111 frame->prepare = prepare_schedule;
… …
2390 3129
2391static void 3130static void
2392coro_aio_callback (pTHX_ CV *cv) 3131coro_aio_callback (pTHX_ CV *cv)
2393{ 3132{
2394 dXSARGS; 3133 dXSARGS;
2395 AV *state = (AV *)GENSUB_ARG; 3134 AV *state = (AV *)S_GENSUB_ARG;
2396 SV *coro = av_pop (state); 3135 SV *coro = av_pop (state);
2397 SV *data_sv = newSV (sizeof (struct io_state)); 3136 SV *data_sv = newSV (sizeof (struct io_state));
2398 3137
2399 av_extend (state, items); 3138 av_extend (state, items - 1);
2400 3139
2401 sv_upgrade (data_sv, SVt_PV); 3140 sv_upgrade (data_sv, SVt_PV);
2402 SvCUR_set (data_sv, sizeof (struct io_state)); 3141 SvCUR_set (data_sv, sizeof (struct io_state));
2403 SvPOK_only (data_sv); 3142 SvPOK_only (data_sv);
2404 3143
… …
2436 /* it quickly returns */ 3175 /* it quickly returns */
2437 if (CORO_THROW) 3176 if (CORO_THROW)
2438 return 0; 3177 return 0;
2439 3178
2440 /* one element that is an RV? repeat! */ 3179 /* one element that is an RV? repeat! */
2441 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3180 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2442 return 1; 3181 return 1;
2443 3182
2444 /* restore status */ 3183 /* restore status */
2445 { 3184 {
2446 SV *data_sv = av_pop (state); 3185 SV *data_sv = av_pop (state);
… …
2485 dSP; 3224 dSP;
2486 3225
2487 static SV *prio_cv; 3226 static SV *prio_cv;
2488 static SV *prio_sv; 3227 static SV *prio_sv;
2489 3228
2490 if (expect_false (!prio_cv)) 3229 if (ecb_expect_false (!prio_cv))
2491 { 3230 {
2492 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3231 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2493 prio_sv = newSViv (0); 3232 prio_sv = newSViv (0);
2494 } 3233 }
2495 3234
… …
2514 3253
2515 for (i = 0; i < items; ++i) 3254 for (i = 0; i < items; ++i)
2516 PUSHs (arg [i]); 3255 PUSHs (arg [i]);
2517 3256
2518 /* now push the callback closure */ 3257 /* now push the callback closure */
2519 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3258 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2520 3259
2521 /* now call the AIO function - we assume our request is uncancelable */ 3260 /* now call the AIO function - we assume our request is uncancelable */
2522 PUTBACK; 3261 PUTBACK;
2523 call_sv ((SV *)req, G_VOID | G_DISCARD); 3262 call_sv ((SV *)req, G_VOID | G_DISCARD);
2524 } 3263 }
2525 3264
2526 /* now that the requets is going, we loop toll we have a result */ 3265 /* now that the request is going, we loop till we have a result */
2527 frame->data = (void *)state; 3266 frame->data = (void *)state;
2528 frame->prepare = prepare_schedule; 3267 frame->prepare = prepare_schedule;
2529 frame->check = slf_check_aio_req; 3268 frame->check = slf_check_aio_req;
2530} 3269}
2531 3270
… …
2538 3277
2539 XSRETURN_EMPTY; 3278 XSRETURN_EMPTY;
2540} 3279}
2541 3280
2542/*****************************************************************************/ 3281/*****************************************************************************/
3282
3283#if CORO_CLONE
3284# include "clone.c"
3285#endif
3286
3287/*****************************************************************************/
3288
3289static SV *
3290coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3291{
3292 SV *coro_sv;
3293 struct coro *coro;
3294 MAGIC *mg;
3295 HV *hv;
3296 SV *cb;
3297 int i;
3298
3299 if (argc > 0)
3300 {
3301 cb = s_get_cv_croak (argv [0]);
3302
3303 if (!is_coro)
3304 {
3305 if (CvISXSUB (cb))
3306 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3307
3308 if (!CvROOT (cb))
3309 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3310 }
3311 }
3312
3313 Newz (0, coro, 1, struct coro);
3314 coro->args = newAV ();
3315 coro->flags = CF_NEW;
3316
3317 if (coro_first) coro_first->prev = coro;
3318 coro->next = coro_first;
3319 coro_first = coro;
3320
3321 coro->hv = hv = newHV ();
3322 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3323 mg->mg_flags |= MGf_DUP;
3324 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3325
3326 if (argc > 0)
3327 {
3328 av_extend (coro->args, argc + is_coro - 1);
3329
3330 if (is_coro)
3331 {
3332 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3333 cb = (SV *)cv_coro_run;
3334 }
3335
3336 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3337
3338 for (i = 1; i < argc; i++)
3339 av_push (coro->args, newSVsv (argv [i]));
3340 }
3341
3342 return coro_sv;
3343}
3344
3345#ifndef __cplusplus
3346ecb_cold XS(boot_Coro__State);
3347#endif
3348
3349#if CORO_JIT
3350
3351static void ecb_noinline ecb_cold
3352pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3353{
3354 dSP;
3355 AV *av = newAV ();
3356
3357 av_store (av, 3, newSVuv (d));
3358 av_store (av, 2, newSVuv (c));
3359 av_store (av, 1, newSVuv (b));
3360 av_store (av, 0, newSVuv (a));
3361
3362 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3363
3364 PUTBACK;
3365}
3366
3367static void ecb_noinline ecb_cold
3368jit_init (pTHX)
3369{
3370 dSP;
3371 SV *load, *save;
3372 char *map_base;
3373 char *load_ptr, *save_ptr;
3374 STRLEN load_len, save_len, map_len;
3375 int count;
3376
3377 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3378
3379 PUSHMARK (SP);
3380 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3381 #include "state.h"
3382 count = call_pv ("Coro::State::_jit", G_ARRAY);
3383 SPAGAIN;
3384
3385 save = POPs; save_ptr = SvPVbyte (save, save_len);
3386 load = POPs; load_ptr = SvPVbyte (load, load_len);
3387
3388 map_len = load_len + save_len + 16;
3389
3390 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3391
3392 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3393
3394 load_perl_slots = (load_save_perl_slots_type)map_base;
3395 memcpy (map_base, load_ptr, load_len);
3396
3397 map_base += (load_len + 15) & ~15;
3398
3399 save_perl_slots = (load_save_perl_slots_type)map_base;
3400 memcpy (map_base, save_ptr, save_len);
3401
3402 /* we are good citizens and try to make the page read-only, so the evil evil */
3403 /* hackers might have it a bit more difficult */
3404 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3405
3406 PUTBACK;
3407 eval_pv ("undef &Coro::State::_jit", 1);
3408}
3409
3410#endif
2543 3411
2544MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3412MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2545 3413
2546PROTOTYPES: DISABLE 3414PROTOTYPES: DISABLE
2547 3415
… …
2550#ifdef USE_ITHREADS 3418#ifdef USE_ITHREADS
2551# if CORO_PTHREAD 3419# if CORO_PTHREAD
2552 coro_thx = PERL_GET_CONTEXT; 3420 coro_thx = PERL_GET_CONTEXT;
2553# endif 3421# endif
2554#endif 3422#endif
2555 BOOT_PAGESIZE; 3423 /* perl defines these to check for existance first, but why it doesn't */
3424 /* just create them one at init time is not clear to me, except for */
3425 /* programs trying to delete them, but... */
3426 /* anyway, we declare this as invalid and make sure they are initialised here */
3427 DEFSV;
3428 ERRSV;
3429
3430 cctx_current = cctx_new_empty ();
2556 3431
2557 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3432 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2558 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3433 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2559 3434
2560 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3435 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2580 3455
2581 { 3456 {
2582 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3457 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2583 3458
2584 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3459 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2585 hv_store_ent (PL_custom_op_names, slf, 3460 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2586 newSVpv ("coro_slf", 0), 0);
2587 3461
2588 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3462 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2589 hv_store_ent (PL_custom_op_descs, slf, 3463 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2590 newSVpv ("coro schedule like function", 0), 0);
2591 } 3464 }
2592 3465
2593 coroapi.ver = CORO_API_VERSION; 3466 coroapi.ver = CORO_API_VERSION;
2594 coroapi.rev = CORO_API_REVISION; 3467 coroapi.rev = CORO_API_REVISION;
2595 3468
… …
2600 coroapi.prepare_nop = prepare_nop; 3473 coroapi.prepare_nop = prepare_nop;
2601 coroapi.prepare_schedule = prepare_schedule; 3474 coroapi.prepare_schedule = prepare_schedule;
2602 coroapi.prepare_cede = prepare_cede; 3475 coroapi.prepare_cede = prepare_cede;
2603 coroapi.prepare_cede_notself = prepare_cede_notself; 3476 coroapi.prepare_cede_notself = prepare_cede_notself;
2604 3477
2605 { 3478 time_init (aTHX);
2606 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2607 3479
2608 if (!svp) croak ("Time::HiRes is required");
2609 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2610
2611 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2612 }
2613
2614 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3480 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3481#if CORO_JIT
3482 PUTBACK;
3483 jit_init (aTHX);
3484 SPAGAIN;
3485#endif
2615} 3486}
2616 3487
2617SV * 3488SV *
2618new (char *klass, ...) 3489new (SV *klass, ...)
3490 ALIAS:
3491 Coro::new = 1
2619 CODE: 3492 CODE:
2620{ 3493 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2621 struct coro *coro; 3494 OUTPUT:
2622 MAGIC *mg;
2623 HV *hv;
2624 CV *cb;
2625 int i;
2626
2627 if (items > 1)
2628 {
2629 cb = coro_sv_2cv (ST (1));
2630
2631 if (CvISXSUB (cb))
2632 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2633
2634 if (!CvROOT (cb))
2635 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2636 }
2637
2638 Newz (0, coro, 1, struct coro);
2639 coro->args = newAV ();
2640 coro->flags = CF_NEW;
2641
2642 if (coro_first) coro_first->prev = coro;
2643 coro->next = coro_first;
2644 coro_first = coro;
2645
2646 coro->hv = hv = newHV ();
2647 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2648 mg->mg_flags |= MGf_DUP;
2649 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2650
2651 if (items > 1)
2652 {
2653 coro->startcv = SvREFCNT_inc_NN (cb);
2654
2655 av_extend (coro->args, items - 1);
2656 for (i = 2; i < items; i++)
2657 av_push (coro->args, newSVsv (ST (i)));
2658 }
2659}
2660 OUTPUT:
2661 RETVAL 3495 RETVAL
2662 3496
2663void 3497void
2664transfer (...) 3498transfer (...)
2665 PROTOTYPE: $$ 3499 PROTOTYPE: $$
2666 CODE: 3500 CODE:
2667 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3501 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2668 3502
2669bool 3503SV *
2670_destroy (SV *coro_sv) 3504clone (Coro::State coro)
2671 CODE: 3505 CODE:
2672 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3506{
3507#if CORO_CLONE
3508 struct coro *ncoro = coro_clone (aTHX_ coro);
3509 MAGIC *mg;
3510 /* TODO: too much duplication */
3511 ncoro->hv = newHV ();
3512 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3513 mg->mg_flags |= MGf_DUP;
3514 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3515#else
3516 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3517#endif
3518}
2673 OUTPUT: 3519 OUTPUT:
2674 RETVAL 3520 RETVAL
2675
2676void
2677_exit (int code)
2678 PROTOTYPE: $
2679 CODE:
2680 _exit (code);
2681 3521
2682int 3522int
2683cctx_stacksize (int new_stacksize = 0) 3523cctx_stacksize (int new_stacksize = 0)
2684 PROTOTYPE: ;$ 3524 PROTOTYPE: ;$
2685 CODE: 3525 CODE:
… …
2721void 3561void
2722list () 3562list ()
2723 PROTOTYPE: 3563 PROTOTYPE:
2724 PPCODE: 3564 PPCODE:
2725{ 3565{
2726 struct coro *coro; 3566 struct coro *coro;
2727 for (coro = coro_first; coro; coro = coro->next) 3567 for (coro = coro_first; coro; coro = coro->next)
2728 if (coro->hv) 3568 if (coro->hv)
2729 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3569 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2730} 3570}
2731 3571
… …
2735 eval = 1 3575 eval = 1
2736 CODE: 3576 CODE:
2737{ 3577{
2738 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3578 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2739 { 3579 {
2740 struct coro temp; 3580 struct coro *current = SvSTATE_current;
3581 struct CoroSLF slf_save;
2741 3582
2742 if (!(coro->flags & CF_RUNNING)) 3583 if (current != coro)
2743 { 3584 {
2744 PUTBACK; 3585 PUTBACK;
2745 save_perl (aTHX_ &temp); 3586 save_perl (aTHX_ current);
2746 load_perl (aTHX_ coro); 3587 load_perl (aTHX_ coro);
3588 /* the coro is most likely in an active SLF call.
3589 * while not strictly required (the code we execute is
3590 * not allowed to call any SLF functions), it's cleaner
3591 * to reinitialise the slf_frame and restore it later.
3592 * This might one day allow us to actually do SLF calls
3593 * from code executed here.
3594 */
3595 slf_save = slf_frame;
3596 slf_frame.prepare = 0;
3597 SPAGAIN;
2747 } 3598 }
2748 3599
2749 {
2750 dSP;
2751 ENTER;
2752 SAVETMPS;
2753 PUTBACK;
2754 PUSHSTACK; 3600 PUSHSTACK;
3601
2755 PUSHMARK (SP); 3602 PUSHMARK (SP);
3603 PUTBACK;
2756 3604
2757 if (ix) 3605 if (ix)
2758 eval_sv (coderef, 0); 3606 eval_sv (coderef, 0);
2759 else 3607 else
2760 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3608 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2761 3609
2762 POPSTACK; 3610 POPSTACK;
2763 SPAGAIN; 3611 SPAGAIN;
2764 FREETMPS;
2765 LEAVE;
2766 PUTBACK;
2767 }
2768 3612
2769 if (!(coro->flags & CF_RUNNING)) 3613 if (current != coro)
2770 { 3614 {
3615 PUTBACK;
3616 slf_frame = slf_save;
2771 save_perl (aTHX_ coro); 3617 save_perl (aTHX_ coro);
2772 load_perl (aTHX_ &temp); 3618 load_perl (aTHX_ current);
2773 SPAGAIN; 3619 SPAGAIN;
2774 } 3620 }
2775 } 3621 }
2776} 3622}
2777 3623
… …
2780 PROTOTYPE: $ 3626 PROTOTYPE: $
2781 ALIAS: 3627 ALIAS:
2782 is_ready = CF_READY 3628 is_ready = CF_READY
2783 is_running = CF_RUNNING 3629 is_running = CF_RUNNING
2784 is_new = CF_NEW 3630 is_new = CF_NEW
2785 is_destroyed = CF_DESTROYED 3631 is_destroyed = CF_ZOMBIE
3632 is_zombie = CF_ZOMBIE
3633 is_suspended = CF_SUSPENDED
2786 CODE: 3634 CODE:
2787 RETVAL = boolSV (coro->flags & ix); 3635 RETVAL = boolSV (coro->flags & ix);
2788 OUTPUT: 3636 OUTPUT:
2789 RETVAL 3637 RETVAL
2790 3638
2791void 3639void
2792throw (Coro::State self, SV *throw = &PL_sv_undef) 3640throw (SV *self, SV *exception = &PL_sv_undef)
2793 PROTOTYPE: $;$ 3641 PROTOTYPE: $;$
2794 CODE: 3642 CODE:
2795{ 3643{
3644 struct coro *coro = SvSTATE (self);
2796 struct coro *current = SvSTATE_current; 3645 struct coro *current = SvSTATE_current;
2797 SV **throwp = self == current ? &CORO_THROW : &self->except; 3646 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2798 SvREFCNT_dec (*throwp); 3647 SvREFCNT_dec (*exceptionp);
2799 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3648 SvGETMAGIC (exception);
3649 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3650
3651 api_ready (aTHX_ self);
2800} 3652}
2801 3653
2802void 3654void
2803api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3655api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2804 PROTOTYPE: $;$ 3656 PROTOTYPE: $;$
… …
2806 3658
2807SV * 3659SV *
2808has_cctx (Coro::State coro) 3660has_cctx (Coro::State coro)
2809 PROTOTYPE: $ 3661 PROTOTYPE: $
2810 CODE: 3662 CODE:
2811 RETVAL = boolSV (!!coro->cctx); 3663 /* maybe manage the running flag differently */
3664 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2812 OUTPUT: 3665 OUTPUT:
2813 RETVAL 3666 RETVAL
2814 3667
2815int 3668int
2816is_traced (Coro::State coro) 3669is_traced (Coro::State coro)
… …
2836 3689
2837void 3690void
2838force_cctx () 3691force_cctx ()
2839 PROTOTYPE: 3692 PROTOTYPE:
2840 CODE: 3693 CODE:
2841 SvSTATE_current->cctx->idle_sp = 0; 3694 cctx_current->idle_sp = 0;
2842 3695
2843void 3696void
2844swap_defsv (Coro::State self) 3697swap_defsv (Coro::State self)
2845 PROTOTYPE: $ 3698 PROTOTYPE: $
2846 ALIAS: 3699 ALIAS:
… …
2854 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3707 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2855 3708
2856 SV *tmp = *src; *src = *dst; *dst = tmp; 3709 SV *tmp = *src; *src = *dst; *dst = tmp;
2857 } 3710 }
2858 3711
3712void
3713cancel (Coro::State self)
3714 CODE:
3715 coro_state_destroy (aTHX_ self);
3716
3717SV *
3718enable_times (int enabled = enable_times)
3719 CODE:
3720{
3721 RETVAL = boolSV (enable_times);
3722
3723 if (enabled != enable_times)
3724 {
3725 enable_times = enabled;
3726
3727 coro_times_update ();
3728 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3729 }
3730}
3731 OUTPUT:
3732 RETVAL
3733
3734void
3735times (Coro::State self)
3736 PPCODE:
3737{
3738 struct coro *current = SvSTATE (coro_current);
3739
3740 if (ecb_expect_false (current == self))
3741 {
3742 coro_times_update ();
3743 coro_times_add (SvSTATE (coro_current));
3744 }
3745
3746 EXTEND (SP, 2);
3747 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3748 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3749
3750 if (ecb_expect_false (current == self))
3751 coro_times_sub (SvSTATE (coro_current));
3752}
3753
3754void
3755swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3756 CODE:
3757{
3758 struct coro *current = SvSTATE_current;
3759
3760 if (current == coro)
3761 SWAP_SVS (current);
3762
3763 if (!coro->swap_sv)
3764 coro->swap_sv = newAV ();
3765
3766 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3767 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3768
3769 if (current == coro)
3770 SWAP_SVS (current);
3771}
3772
2859 3773
2860MODULE = Coro::State PACKAGE = Coro 3774MODULE = Coro::State PACKAGE = Coro
2861 3775
2862BOOT: 3776BOOT:
2863{ 3777{
2864 int i;
2865
2866 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2867 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3778 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2868 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3779 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2869 3780 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2870 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3781 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2871 SvREADONLY_on (coro_current); 3782 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3783 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3784 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3785 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3786
3787 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3788 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3789 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3790 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2872 3791
2873 coro_stash = gv_stashpv ("Coro", TRUE); 3792 coro_stash = gv_stashpv ("Coro", TRUE);
2874 3793
2875 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3794 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2876 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3795 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2877 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3796 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2878 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3797 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2879 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3798 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2880 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3799 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2881
2882 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2883 coro_ready[i] = newAV ();
2884 3800
2885 { 3801 {
2886 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3802 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2887 3803
2888 coroapi.schedule = api_schedule; 3804 coroapi.schedule = api_schedule;
3805 coroapi.schedule_to = api_schedule_to;
2889 coroapi.cede = api_cede; 3806 coroapi.cede = api_cede;
2890 coroapi.cede_notself = api_cede_notself; 3807 coroapi.cede_notself = api_cede_notself;
2891 coroapi.ready = api_ready; 3808 coroapi.ready = api_ready;
2892 coroapi.is_ready = api_is_ready; 3809 coroapi.is_ready = api_is_ready;
2893 coroapi.nready = coro_nready; 3810 coroapi.nready = coro_nready;
… …
2897 sv_setiv (sv, (IV)&coroapi); 3814 sv_setiv (sv, (IV)&coroapi);
2898 SvREADONLY_on (sv); 3815 SvREADONLY_on (sv);
2899 } 3816 }
2900} 3817}
2901 3818
3819SV *
3820async (...)
3821 PROTOTYPE: &@
3822 CODE:
3823 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3824 api_ready (aTHX_ RETVAL);
3825 OUTPUT:
3826 RETVAL
3827
3828void
3829_destroy (Coro::State coro)
3830 CODE:
3831 /* used by the manager thread */
3832 coro_state_destroy (aTHX_ coro);
3833
3834void
3835on_destroy (Coro::State coro, SV *cb)
3836 CODE:
3837 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3838
3839void
3840join (...)
3841 CODE:
3842 CORO_EXECUTE_SLF_XS (slf_init_join);
3843
3844void
3845terminate (...)
3846 CODE:
3847 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3848
3849void
3850cancel (...)
3851 CODE:
3852 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3853
3854int
3855safe_cancel (Coro::State self, ...)
3856 C_ARGS: aTHX_ self, &ST (1), items - 1
3857
2902void 3858void
2903schedule (...) 3859schedule (...)
2904 CODE: 3860 CODE:
2905 CORO_EXECUTE_SLF_XS (slf_init_schedule); 3861 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3862
3863void
3864schedule_to (...)
3865 CODE:
3866 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3867
3868void
3869cede_to (...)
3870 CODE:
3871 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2906 3872
2907void 3873void
2908cede (...) 3874cede (...)
2909 CODE: 3875 CODE:
2910 CORO_EXECUTE_SLF_XS (slf_init_cede); 3876 CORO_EXECUTE_SLF_XS (slf_init_cede);
… …
2924void 3890void
2925_set_readyhook (SV *hook) 3891_set_readyhook (SV *hook)
2926 PROTOTYPE: $ 3892 PROTOTYPE: $
2927 CODE: 3893 CODE:
2928 SvREFCNT_dec (coro_readyhook); 3894 SvREFCNT_dec (coro_readyhook);
3895 SvGETMAGIC (hook);
3896 if (SvOK (hook))
3897 {
2929 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3898 coro_readyhook = newSVsv (hook);
3899 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3900 }
3901 else
3902 {
3903 coro_readyhook = 0;
3904 CORO_READYHOOK = 0;
3905 }
2930 3906
2931int 3907int
2932prio (Coro::State coro, int newprio = 0) 3908prio (Coro::State coro, int newprio = 0)
2933 PROTOTYPE: $;$ 3909 PROTOTYPE: $;$
2934 ALIAS: 3910 ALIAS:
… …
2940 if (items > 1) 3916 if (items > 1)
2941 { 3917 {
2942 if (ix) 3918 if (ix)
2943 newprio = coro->prio - newprio; 3919 newprio = coro->prio - newprio;
2944 3920
2945 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3921 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2946 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3922 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2947 3923
2948 coro->prio = newprio; 3924 coro->prio = newprio;
2949 } 3925 }
2950} 3926}
2951 OUTPUT: 3927 OUTPUT:
… …
2965 CODE: 3941 CODE:
2966 RETVAL = coro_nready; 3942 RETVAL = coro_nready;
2967 OUTPUT: 3943 OUTPUT:
2968 RETVAL 3944 RETVAL
2969 3945
2970# for async_pool speedup
2971void 3946void
2972_pool_1 (SV *cb) 3947suspend (Coro::State self)
3948 PROTOTYPE: $
2973 CODE: 3949 CODE:
2974{ 3950 self->flags |= CF_SUSPENDED;
2975 HV *hv = (HV *)SvRV (coro_current);
2976 struct coro *coro = SvSTATE_hv ((SV *)hv);
2977 AV *defav = GvAV (PL_defgv);
2978 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2979 AV *invoke_av;
2980 int i, len;
2981 3951
2982 if (!invoke) 3952void
3953resume (Coro::State self)
3954 PROTOTYPE: $
3955 CODE:
3956 self->flags &= ~CF_SUSPENDED;
3957
3958void
3959_pool_handler (...)
3960 CODE:
3961 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3962
3963void
3964async_pool (SV *cv, ...)
3965 PROTOTYPE: &@
3966 PPCODE:
3967{
3968 HV *hv = (HV *)av_pop (av_async_pool);
3969 AV *av = newAV ();
3970 SV *cb = ST (0);
3971 int i;
3972
3973 av_extend (av, items - 2);
3974 for (i = 1; i < items; ++i)
3975 av_push (av, SvREFCNT_inc_NN (ST (i)));
3976
3977 if ((SV *)hv == &PL_sv_undef)
2983 { 3978 {
2984 SV *old = PL_diehook; 3979 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2985 PL_diehook = 0; 3980 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2986 SvREFCNT_dec (old); 3981 SvREFCNT_dec (sv);
2987 croak ("\3async_pool terminate\2\n");
2988 } 3982 }
2989 3983
2990 SvREFCNT_dec (coro->saved_deffh);
2991 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2992
2993 hv_store (hv, "desc", sizeof ("desc") - 1,
2994 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2995
2996 invoke_av = (AV *)SvRV (invoke);
2997 len = av_len (invoke_av);
2998
2999 sv_setsv (cb, AvARRAY (invoke_av)[0]);
3000
3001 if (len > 0)
3002 { 3984 {
3003 av_fill (defav, len - 1); 3985 struct coro *coro = SvSTATE_hv (hv);
3004 for (i = 0; i < len; ++i) 3986
3005 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3987 assert (!coro->invoke_cb);
3988 assert (!coro->invoke_av);
3989 coro->invoke_cb = SvREFCNT_inc (cb);
3990 coro->invoke_av = av;
3006 } 3991 }
3007}
3008 3992
3009void 3993 api_ready (aTHX_ (SV *)hv);
3010_pool_2 (SV *cb)
3011 CODE:
3012{
3013 HV *hv = (HV *)SvRV (coro_current);
3014 struct coro *coro = SvSTATE_hv ((SV *)hv);
3015 3994
3016 sv_setsv (cb, &PL_sv_undef); 3995 if (GIMME_V != G_VOID)
3017 3996 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3018 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 3997 else
3019 coro->saved_deffh = 0;
3020
3021 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3022 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3023 {
3024 SV *old = PL_diehook;
3025 PL_diehook = 0;
3026 SvREFCNT_dec (old); 3998 SvREFCNT_dec (hv);
3027 croak ("\3async_pool terminate\2\n");
3028 }
3029
3030 av_clear (GvAV (PL_defgv));
3031 hv_store (hv, "desc", sizeof ("desc") - 1,
3032 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3033
3034 coro->prio = 0;
3035
3036 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3037 api_trace (aTHX_ coro_current, 0);
3038
3039 av_push (av_async_pool, newSVsv (coro_current));
3040} 3999}
3041 4000
3042SV * 4001SV *
3043rouse_cb () 4002rouse_cb ()
3044 PROTOTYPE: 4003 PROTOTYPE:
… …
3051rouse_wait (...) 4010rouse_wait (...)
3052 PROTOTYPE: ;$ 4011 PROTOTYPE: ;$
3053 PPCODE: 4012 PPCODE:
3054 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4013 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3055 4014
4015void
4016on_enter (SV *block)
4017 ALIAS:
4018 on_leave = 1
4019 PROTOTYPE: &
4020 CODE:
4021{
4022 struct coro *coro = SvSTATE_current;
4023 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4024
4025 block = s_get_cv_croak (block);
4026
4027 if (!*avp)
4028 *avp = newAV ();
4029
4030 av_push (*avp, SvREFCNT_inc (block));
4031
4032 if (!ix)
4033 on_enterleave_call (aTHX_ block);
4034
4035 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4036 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4037 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4038}
4039
3056 4040
3057MODULE = Coro::State PACKAGE = PerlIO::cede 4041MODULE = Coro::State PACKAGE = PerlIO::cede
3058 4042
3059BOOT: 4043BOOT:
3060 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4044 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3063MODULE = Coro::State PACKAGE = Coro::Semaphore 4047MODULE = Coro::State PACKAGE = Coro::Semaphore
3064 4048
3065SV * 4049SV *
3066new (SV *klass, SV *count = 0) 4050new (SV *klass, SV *count = 0)
3067 CODE: 4051 CODE:
4052{
4053 int semcnt = 1;
4054
4055 if (count)
4056 {
4057 SvGETMAGIC (count);
4058
4059 if (SvOK (count))
4060 semcnt = SvIV (count);
4061 }
4062
3068 RETVAL = sv_bless ( 4063 RETVAL = sv_bless (
3069 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4064 coro_waitarray_new (aTHX_ semcnt),
3070 GvSTASH (CvGV (cv)) 4065 GvSTASH (CvGV (cv))
3071 ); 4066 );
4067}
3072 OUTPUT: 4068 OUTPUT:
3073 RETVAL 4069 RETVAL
3074 4070
3075# helper for Coro::Channel 4071# helper for Coro::Channel and others
3076SV * 4072SV *
3077_alloc (int count) 4073_alloc (int count)
3078 CODE: 4074 CODE:
3079 RETVAL = coro_waitarray_new (aTHX_ count); 4075 RETVAL = coro_waitarray_new (aTHX_ count);
3080 OUTPUT: 4076 OUTPUT:
… …
3122 XSRETURN_NO; 4118 XSRETURN_NO;
3123} 4119}
3124 4120
3125void 4121void
3126waiters (SV *self) 4122waiters (SV *self)
3127 PPCODE: 4123 PPCODE:
3128{ 4124{
3129 AV *av = (AV *)SvRV (self); 4125 AV *av = (AV *)SvRV (self);
3130 int wcount = AvFILLp (av) + 1 - 1; 4126 int wcount = AvFILLp (av) + 1 - 1;
3131 4127
3132 if (GIMME_V == G_SCALAR) 4128 if (GIMME_V == G_SCALAR)
… …
3138 for (i = 1; i <= wcount; ++i) 4134 for (i = 1; i <= wcount; ++i)
3139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4135 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3140 } 4136 }
3141} 4137}
3142 4138
4139MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4140
4141void
4142_may_delete (SV *sem, int count, unsigned int extra_refs)
4143 PPCODE:
4144{
4145 AV *av = (AV *)SvRV (sem);
4146
4147 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4148 && AvFILLp (av) == 0 /* no waiters, just count */
4149 && SvIV (AvARRAY (av)[0]) == count)
4150 XSRETURN_YES;
4151
4152 XSRETURN_NO;
4153}
4154
3143MODULE = Coro::State PACKAGE = Coro::Signal 4155MODULE = Coro::State PACKAGE = Coro::Signal
3144 4156
3145SV * 4157SV *
3146new (SV *klass) 4158new (SV *klass)
3147 CODE: 4159 CODE:
… …
3159 4171
3160void 4172void
3161broadcast (SV *self) 4173broadcast (SV *self)
3162 CODE: 4174 CODE:
3163{ 4175{
3164 AV *av = (AV *)SvRV (self); 4176 AV *av = (AV *)SvRV (self);
3165 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4177 coro_signal_wake (aTHX_ av, AvFILLp (av));
3166} 4178}
3167 4179
3168void 4180void
3169send (SV *self) 4181send (SV *self)
… …
3177 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4189 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3178} 4190}
3179 4191
3180IV 4192IV
3181awaited (SV *self) 4193awaited (SV *self)
3182 CODE: 4194 CODE:
3183 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4195 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3184 OUTPUT: 4196 OUTPUT:
3185 RETVAL 4197 RETVAL
3186 4198
3187 4199
… …
3192 4204
3193void 4205void
3194_schedule (...) 4206_schedule (...)
3195 CODE: 4207 CODE:
3196{ 4208{
3197 static int incede; 4209 static int incede;
3198 4210
3199 api_cede_notself (aTHX); 4211 api_cede_notself (aTHX);
3200 4212
3201 ++incede; 4213 ++incede;
3202 while (coro_nready >= incede && api_cede (aTHX)) 4214 while (coro_nready >= incede && api_cede (aTHX))
… …
3218 4230
3219void 4231void
3220_register (char *target, char *proto, SV *req) 4232_register (char *target, char *proto, SV *req)
3221 CODE: 4233 CODE:
3222{ 4234{
3223 CV *req_cv = coro_sv_2cv (req); 4235 SV *req_cv = s_get_cv_croak (req);
3224 /* newXSproto doesn't return the CV on 5.8 */ 4236 /* newXSproto doesn't return the CV on 5.8 */
3225 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4237 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3226 sv_setpv ((SV *)slf_cv, proto); 4238 sv_setpv ((SV *)slf_cv, proto);
3227 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4239 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3228} 4240}
3229 4241
4242MODULE = Coro::State PACKAGE = Coro::Select
4243
4244void
4245patch_pp_sselect ()
4246 CODE:
4247 if (!coro_old_pp_sselect)
4248 {
4249 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4250 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4251 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4252 }
4253
4254void
4255unpatch_pp_sselect ()
4256 CODE:
4257 if (coro_old_pp_sselect)
4258 {
4259 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4260 coro_old_pp_sselect = 0;
4261 }
4262
4263MODULE = Coro::State PACKAGE = Coro::Util
4264
4265void
4266_exit (int code)
4267 CODE:
4268 _exit (code);
4269
4270NV
4271time ()
4272 CODE:
4273 RETVAL = nvtime (aTHX);
4274 OUTPUT:
4275 RETVAL
4276
4277NV
4278gettimeofday ()
4279 PPCODE:
4280{
4281 UV tv [2];
4282 u2time (aTHX_ tv);
4283 EXTEND (SP, 2);
4284 PUSHs (sv_2mortal (newSVuv (tv [0])));
4285 PUSHs (sv_2mortal (newSVuv (tv [1])));
4286}
4287

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