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Comparing Coro/Coro/State.xs (file contents):
Revision 1.305 by root, Wed Nov 19 10:44:41 2008 UTC vs.
Revision 1.465 by root, Sat Jun 25 19:04:04 2016 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SvREFCNT_dec_NN
28 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
29#endif
30
31#ifndef SvREFCNT_inc_NN
32 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
33#endif
34
35#ifndef SVs_PADSTALE
36# define SVs_PADSTALE 0
37#endif
38
39#ifdef PadARRAY
40# define NEWPADAPI 1
41# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
42#else
43typedef AV PADNAMELIST;
44# if !PERL_VERSION_ATLEAST(5,8,0)
45typedef AV PADLIST;
46typedef AV PAD;
47# endif
48# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
49# define PadlistMAX(pl) AvFILLp (pl)
50# define PadlistNAMES(pl) (*PadlistARRAY (pl))
51# define PadARRAY AvARRAY
52# define PadMAX AvFILLp
53# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
54#endif
55#ifndef PadnamelistREFCNT
56# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
57#endif
58#ifndef PadnamelistREFCNT_dec
59# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
60#endif
61
62/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
63/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
64#if PERL_VERSION_ATLEAST(5,19,0)
65# define SVt_BIND SVt_IV
66#endif
67
68#if defined(_WIN32)
69# undef HAS_GETTIMEOFDAY
18# undef setjmp 70# undef setjmp
19# undef longjmp 71# undef longjmp
20# undef _exit 72# undef _exit
21# define setjmp _setjmp /* deep magic */ 73# define setjmp _setjmp /* deep magic */
22#else 74#else
23# include <inttypes.h> /* most portable stdint.h */ 75# include <inttypes.h> /* most portable stdint.h */
24#endif 76#endif
25 77
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 */ 78/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 79static int cctx_max_idle = 4;
55 80
56#define PERL_VERSION_ATLEAST(a,b,c) \ 81#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 82# 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 83#endif
116 84
117/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 95#else
128# define dSTACKLEVEL volatile void *stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
130#endif 98#endif
131 99
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#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))
148 101
149#include "CoroAPI.h" 102#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
151 104
152#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
153# if CORO_PTHREAD 106# if CORO_PTHREAD
154static void *coro_thx; 107static void *coro_thx;
155# endif 108# endif
156#endif 109#endif
157 110
111#ifdef __linux
112# include <time.h> /* for timespec */
113# include <syscall.h> /* for SYS_* */
114# ifdef SYS_clock_gettime
115# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
116# define CORO_CLOCK_MONOTONIC 1
117# define CORO_CLOCK_THREAD_CPUTIME_ID 3
118# endif
119#endif
120
121/* perl usually suppressed asserts. for debugging, we sometimes force it to be on */
122#if 0
123# undef NDEBUG
124# include <assert.h>
125#endif
126
158static double (*nvtime)(); /* so why doesn't it take void? */ 127static double (*nvtime)(); /* so why doesn't it take void? */
128static void (*u2time)(pTHX_ UV ret[2]);
159 129
160/* we hijack an hopefully unused CV flag for our purposes */ 130/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 131#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 132static OP *pp_slf (pTHX);
133static void slf_destroy (pTHX_ struct coro *coro);
163 134
164static U32 cctx_gen; 135static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 139static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 140static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 141static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 142
143static AV *av_destroy; /* destruction queue */
144static SV *sv_manager; /* the manager coro */
145static SV *sv_idle; /* $Coro::idle */
146
172static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 149static SV *rv_diehook;
175static SV *rv_warnhook; 150static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 151
178/* async_pool helper stuff */ 152/* async_pool helper stuff */
179static SV *sv_pool_rss; 153static SV *sv_pool_rss;
180static SV *sv_pool_size; 154static SV *sv_pool_size;
155static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 156static AV *av_async_pool; /* idle pool */
157static SV *sv_Coro; /* class string */
158static CV *cv_pool_handler;
182 159
183/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
184static SV *sv_activity; 161static SV *sv_activity;
185 162
163/* enable processtime/realtime profiling */
164static char enable_times;
165typedef U32 coro_ts[2];
166static coro_ts time_real, time_cpu;
167static char times_valid;
168
186static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
188 171
189enum { 172enum
173{
190 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 183typedef struct coro_cctx
200{ 184{
201 struct coro_cctx *next; 185 struct coro_cctx *next;
202 186
203 /* the stack */ 187 /* the stack */
204 void *sptr; 188 struct coro_stack stack;
205 size_t ssize;
206 189
207 /* cpu state */ 190 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 191 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
192#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 193 JMPENV *idle_te; /* same as idle_sp, but for top_env */
194#endif
210 JMPENV *top_env; 195 JMPENV *top_env;
211 coro_context cctx; 196 coro_context cctx;
212 197
213 U32 gen; 198 U32 gen;
214#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
215 int valgrind_id; 200 int valgrind_id;
216#endif 201#endif
217 unsigned char flags; 202 unsigned char flags;
218} coro_cctx; 203} coro_cctx;
219 204
205static coro_cctx *cctx_current; /* the currently running cctx */
206
207/*****************************************************************************/
208
209static MGVTBL coro_state_vtbl;
210
220enum { 211enum
212{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 216 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
217 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
218 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 219};
226 220
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 221/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 222typedef struct
229{ 223{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
235# include "state.h" 225 #include "state.h"
236#undef VAR
237} perl_slots; 226} perl_slots;
238 227
228/* 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)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 230
241/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
242struct coro { 232struct coro
233{
243 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 235 coro_cctx *cctx;
236
237 /* ready queue */
238 struct coro *next_ready;
245 239
246 /* state data */ 240 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 242 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
250 244
245 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 249
257 /* statistics */ 250 /* statistics */
258 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
259 252
260 /* coro process data */ 253 /* coro process data */
261 int prio; 254 int prio;
262 SV *except; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
263 SV *rouse_cb; 256 SV *rouse_cb; /* last rouse callback */
257 AV *on_destroy; /* callbacks or coros to notify on destroy */
258 AV *status; /* the exit status list */
264 259
265 /* async_pool */ 260 /* async_pool */
266 SV *saved_deffh; 261 SV *saved_deffh;
262 SV *invoke_cb;
263 AV *invoke_av;
264
265 /* on_enter/on_leave */
266 AV *on_enter; AV *on_enter_xs;
267 AV *on_leave; AV *on_leave_xs;
268
269 /* swap_sv */
270 AV *swap_sv;
271
272 /* times */
273 coro_ts t_cpu, t_real;
267 274
268 /* linked list */ 275 /* linked list */
269 struct coro *next, *prev; 276 struct coro *next, *prev;
270}; 277};
271 278
272typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
273typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
274 281
275/* the following variables are effectively part of the perl context */ 282/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */ 283/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */ 284/* the main reason we don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
279 286
280/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
281 288
282#define PRIO_MAX 3 289#define CORO_PRIO_MAX 3
283#define PRIO_HIGH 1 290#define CORO_PRIO_HIGH 1
284#define PRIO_NORMAL 0 291#define CORO_PRIO_NORMAL 0
285#define PRIO_LOW -1 292#define CORO_PRIO_LOW -1
286#define PRIO_IDLE -3 293#define CORO_PRIO_IDLE -3
287#define PRIO_MIN -4 294#define CORO_PRIO_MIN -4
288 295
289/* for Coro.pm */ 296/* for Coro.pm */
290static SV *coro_current; 297static SV *coro_current;
291static SV *coro_readyhook; 298static SV *coro_readyhook;
292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
300static CV *cv_coro_run;
293static struct coro *coro_first; 301static struct coro *coro_first;
294#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
295 303
304/** JIT *********************************************************************/
305
306#if CORO_JIT
307 /* APPLE doesn't have mmap though */
308 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
309 #ifndef CORO_JIT_TYPE
310 #if ECB_AMD64 && CORO_JIT_UNIXY
311 #define CORO_JIT_TYPE "amd64-unix"
312 #elif __i386 && CORO_JIT_UNIXY
313 #define CORO_JIT_TYPE "x86-unix"
314 #endif
315 #endif
316#endif
317
318#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
319 #undef CORO_JIT
320#endif
321
322#if CORO_JIT
323 typedef void (*load_save_perl_slots_type)(perl_slots *);
324 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
325#endif
326
327/** Coro::Select ************************************************************/
328
329static OP *(*coro_old_pp_sselect) (pTHX);
330static SV *coro_select_select;
331
332/* horrible hack, but if it works... */
333static OP *
334coro_pp_sselect (pTHX)
335{
336 dSP;
337 PUSHMARK (SP - 4); /* fake argument list */
338 XPUSHs (coro_select_select);
339 PUTBACK;
340
341 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
342 PL_op->op_flags |= OPf_STACKED;
343 PL_op->op_private = 0;
344 return PL_ppaddr [OP_ENTERSUB](aTHX);
345}
346
347/** time stuff **************************************************************/
348
349#ifdef HAS_GETTIMEOFDAY
350
351ecb_inline void
352coro_u2time (pTHX_ UV ret[2])
353{
354 struct timeval tv;
355 gettimeofday (&tv, 0);
356
357 ret [0] = tv.tv_sec;
358 ret [1] = tv.tv_usec;
359}
360
361ecb_inline double
362coro_nvtime (void)
363{
364 struct timeval tv;
365 gettimeofday (&tv, 0);
366
367 return tv.tv_sec + tv.tv_usec * 1e-6;
368}
369
370ecb_inline void
371time_init (pTHX)
372{
373 nvtime = coro_nvtime;
374 u2time = coro_u2time;
375}
376
377#else
378
379ecb_inline void
380time_init (pTHX)
381{
382 SV **svp;
383
384 require_pv ("Time/HiRes.pm");
385
386 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
387
388 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
389 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
390
391 nvtime = INT2PTR (double (*)(), SvIV (*svp));
392
393 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
394 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
395}
396
397#endif
398
296/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
297 400
298static SV * 401static SV * ecb_noinline
299coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
300{ 403{
301#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
302 /* 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 */
303 get_sv (name, create); 406 get_sv (name, create);
304#endif 407#endif
305 return get_sv (name, create); 408 return get_sv (name, create);
306} 409}
307 410
308static AV * 411static AV * ecb_noinline
309coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
310{ 413{
311#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
312 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 415 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
313 get_av (name, create); 416 get_av (name, create);
314#endif 417#endif
315 return get_av (name, create); 418 return get_av (name, create);
316} 419}
317 420
318static HV * 421static HV * ecb_noinline
319coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
320{ 423{
321#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
322 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 425 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
323 get_hv (name, create); 426 get_hv (name, create);
324#endif 427#endif
325 return get_hv (name, create); 428 return get_hv (name, create);
326} 429}
327 430
328static AV * 431ecb_inline void
432coro_times_update (void)
433{
434#ifdef coro_clock_gettime
435 struct timespec ts;
436
437 ts.tv_sec = ts.tv_nsec = 0;
438 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
439 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
440
441 ts.tv_sec = ts.tv_nsec = 0;
442 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
443 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
444#else
445 dTHX;
446 UV tv[2];
447
448 u2time (aTHX_ tv);
449 time_real [0] = tv [0];
450 time_real [1] = tv [1] * 1000;
451#endif
452}
453
454ecb_inline void
455coro_times_add (struct coro *c)
456{
457 c->t_real [1] += time_real [1];
458 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
459 c->t_real [0] += time_real [0];
460
461 c->t_cpu [1] += time_cpu [1];
462 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
463 c->t_cpu [0] += time_cpu [0];
464}
465
466ecb_inline void
467coro_times_sub (struct coro *c)
468{
469 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
470 c->t_real [1] -= time_real [1];
471 c->t_real [0] -= time_real [0];
472
473 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
474 c->t_cpu [1] -= time_cpu [1];
475 c->t_cpu [0] -= time_cpu [0];
476}
477
478/*****************************************************************************/
479/* magic glue */
480
481#define CORO_MAGIC_type_cv 26
482#define CORO_MAGIC_type_state PERL_MAGIC_ext
483
484#define CORO_MAGIC_NN(sv, type) \
485 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
486 ? SvMAGIC (sv) \
487 : mg_find (sv, type))
488
489#define CORO_MAGIC(sv, type) \
490 (ecb_expect_true (SvMAGIC (sv)) \
491 ? CORO_MAGIC_NN (sv, type) \
492 : 0)
493
494#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
495#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
496
497ecb_inline MAGIC *
498SvSTATEhv_p (pTHX_ SV *coro)
499{
500 MAGIC *mg;
501
502 if (ecb_expect_true (
503 SvTYPE (coro) == SVt_PVHV
504 && (mg = CORO_MAGIC_state (coro))
505 && mg->mg_virtual == &coro_state_vtbl
506 ))
507 return mg;
508
509 return 0;
510}
511
512ecb_inline struct coro *
513SvSTATE_ (pTHX_ SV *coro_sv)
514{
515 MAGIC *mg;
516
517 if (SvROK (coro_sv))
518 coro_sv = SvRV (coro_sv);
519
520 mg = SvSTATEhv_p (aTHX_ coro_sv);
521 if (!mg)
522 croak ("Coro::State object required");
523
524 return (struct coro *)mg->mg_ptr;
525}
526
527#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
528
529/* faster than SvSTATE, but expects a coroutine hv */
530#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
531#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
532
533/*****************************************************************************/
534/* padlist management and caching */
535
536ecb_inline PADLIST *
329coro_clone_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
330{ 538{
331 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
332 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
333 544
334 newpadlist = newAV (); 545#if NEWPADAPI
546
547 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
548 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
549 while (!PadlistARRAY (padlist)[off - 1])
550 --off;
551
552 Perl_pad_push (aTHX_ padlist, off);
553
554 newpad = PadlistARRAY (padlist)[off];
555 PadlistARRAY (padlist)[off] = 0;
556
557#else
558
559#if PERL_VERSION_ATLEAST (5,10,0)
560 Perl_pad_push (aTHX_ padlist, off);
561#else
562 Perl_pad_push (aTHX_ padlist, off, 1);
563#endif
564
565 newpad = PadlistARRAY (padlist)[off];
566 PadlistMAX (padlist) = off - 1;
567
568#endif
569
570 newPADLIST (newpadlist);
571#if !PERL_VERSION_ATLEAST(5,15,3)
572 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
335 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
336#if PERL_VERSION_ATLEAST (5,10,0)
337 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
338#else
339 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
340#endif 574#endif
341 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
342 --AvFILLp (padlist);
343 575
344 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 576 /* Already extended to 2 elements by newPADLIST. */
345 av_store (newpadlist, 1, (SV *)newpad); 577 PadlistMAX (newpadlist) = 1;
578
579 padnames = PadlistNAMES (padlist);
580 ++PadnamelistREFCNT (padnames);
581 PadlistNAMES (newpadlist) = padnames;
582
583 PadlistARRAY (newpadlist)[1] = newpad;
346 584
347 return newpadlist; 585 return newpadlist;
348} 586}
349 587
350static void 588ecb_inline void
351free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
352{ 590{
353 /* may be during global destruction */ 591 /* may be during global destruction */
354 if (SvREFCNT (padlist)) 592 if (!IN_DESTRUCT)
355 { 593 {
356 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
357 while (i >= 0) 595
596 while (i > 0) /* special-case index 0 */
358 { 597 {
359 SV **svp = av_fetch (padlist, i--, FALSE); 598 /* we try to be extra-careful here */
599 PAD *pad = PadlistARRAY (padlist)[i--];
600
360 if (svp) 601 if (pad)
361 { 602 {
362 SV *sv; 603 I32 j = PadMAX (pad);
363 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 604
605 while (j >= 0)
364 SvREFCNT_dec (sv); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
365 607
608 PadMAX (pad) = -1;
366 SvREFCNT_dec (*svp); 609 SvREFCNT_dec (pad);
367 } 610 }
368 } 611 }
369 612
613 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
614
615#if NEWPADAPI
616 Safefree (PadlistARRAY (padlist));
617 Safefree (padlist);
618#else
619 AvFILLp (padlist) = -1;
620 AvREAL_off (padlist);
370 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
371 } 623 }
372} 624}
373 625
374static int 626static int
375coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
376{ 628{
377 AV *padlist; 629 PADLIST *padlist;
378 AV *av = (AV *)mg->mg_obj; 630 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
631 size_t len = *(size_t *)mg->mg_ptr;
379 632
380 /* casting is fun. */ 633 /* perl manages to free our internal AV and _then_ call us */
381 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 634 if (IN_DESTRUCT)
635 return 0;
636
637 while (len--)
382 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
383
384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
385 639
386 return 0; 640 return 0;
387} 641}
388
389#define CORO_MAGIC_type_cv 26
390#define CORO_MAGIC_type_state PERL_MAGIC_ext
391 642
392static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
393 0, 0, 0, 0, 644 0, 0, 0, 0,
394 coro_cv_free 645 coro_cv_free
395}; 646};
396 647
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
402#define CORO_MAGIC(sv, type) \
403 (expect_true (SvMAGIC (sv)) \
404 ? CORO_MAGIC_NN (sv, type) \
405 : 0)
406
407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
409
410INLINE struct coro *
411SvSTATE_ (pTHX_ SV *coro)
412{
413 HV *stash;
414 MAGIC *mg;
415
416 if (SvROK (coro))
417 coro = SvRV (coro);
418
419 if (expect_false (SvTYPE (coro) != SVt_PVHV))
420 croak ("Coro::State object required");
421
422 stash = SvSTASH (coro);
423 if (expect_false (stash != coro_stash && stash != coro_state_stash))
424 {
425 /* very slow, but rare, check */
426 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
427 croak ("Coro::State object required");
428 }
429
430 mg = CORO_MAGIC_state (coro);
431 return (struct coro *)mg->mg_ptr;
432}
433
434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
439
440/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
441static void 649ecb_inline void
442get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
443{ 651{
444 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
445 AV *av; 653 size_t *lenp;
446 654
447 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
448 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
449 else 657 else
450 { 658 {
451#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
452 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
453 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
454 CV *cp = Perl_cv_clone (aTHX_ cv); 662 CV *cp = Perl_cv_clone (aTHX_ cv);
455 CvPADLIST (cv) = CvPADLIST (cp); 663 CvPADLIST (cv) = CvPADLIST (cp);
456 CvPADLIST (cp) = 0; 664 CvPADLIST (cp) = 0;
457 SvREFCNT_dec (cp); 665 SvREFCNT_dec (cp);
458#else 666#else
459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
460#endif 668#endif
461 } 669 }
462} 670}
463 671
464static void 672ecb_inline void
465put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
466{ 674{
467 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
468 AV *av;
469 676
470 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
471 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 679 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
680 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
681 mg->mg_len = 1; /* so mg_free frees mg_ptr */
682 }
683 else
684 Renew (mg->mg_ptr,
685 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
686 char);
472 687
473 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
474
475 if (expect_false (AvFILLp (av) >= AvMAX (av)))
476 av_extend (av, AvMAX (av) + 1);
477
478 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
479} 689}
480 690
481/** load & save, init *******************************************************/ 691/** load & save, init *******************************************************/
692
693ecb_inline void
694swap_sv (SV *a, SV *b)
695{
696 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
697 SV tmp;
698
699 /* swap sv_any */
700 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
701
702 /* swap sv_flags */
703 SvFLAGS (&tmp) = SvFLAGS (a);
704 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
705 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
706
707#if PERL_VERSION_ATLEAST (5,10,0)
708 /* perl 5.10 and later complicates this _quite_ a bit, but it also
709 * is much faster, so no quarrels here. alternatively, we could
710 * sv_upgrade to avoid this.
711 */
712 {
713 /* swap sv_u */
714 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
715
716 /* if SvANY points to the head, we need to adjust the pointers,
717 * as the pointer for a still points to b, and maybe vice versa.
718 */
719 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
720 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
721 svany_in_head_set |= 1 << SVt_NV;
722 #endif
723
724 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
725
726 if (svany_in_head (SvTYPE (a)))
727 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
728
729 if (svany_in_head (SvTYPE (b)))
730 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
731 }
732#endif
733}
734
735/* swap sv heads, at least logically */
736static void
737swap_svs_enter (pTHX_ Coro__State c)
738{
739 int i;
740
741 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
742 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
743}
744
745static void
746swap_svs_leave (pTHX_ Coro__State c)
747{
748 int i;
749
750 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
751 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
752}
753
754#define SWAP_SVS_ENTER(coro) \
755 if (ecb_expect_false ((coro)->swap_sv)) \
756 swap_svs_enter (aTHX_ (coro))
757
758#define SWAP_SVS_LEAVE(coro) \
759 if (ecb_expect_false ((coro)->swap_sv)) \
760 swap_svs_leave (aTHX_ (coro))
761
762static void
763on_enterleave_call (pTHX_ SV *cb);
482 764
483static void 765static void
484load_perl (pTHX_ Coro__State c) 766load_perl (pTHX_ Coro__State c)
485{ 767{
486 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
487 c->slot = 0; 769 c->slot = 0;
488 770
489 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
490 772
491 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
492 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
493 GvSV (PL_errgv) = slot->errsv; 775#else
494 GvSV (irsgv) = slot->irsgv;
495
496 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
497 # include "state.h" 777 #include "state.h"
498 #undef VAR 778#endif
499 779
500 { 780 {
501 dSP; 781 dSP;
502 782
503 CV *cv; 783 CV *cv;
504 784
505 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
506 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
507 { 787 {
508 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
509 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
510 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
511 } 791 }
512 792
513 PUTBACK; 793 PUTBACK;
514 } 794 }
515 795
516 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
517 CORO_THROW = c->except; 797 CORO_THROW = c->except;
798
799 if (ecb_expect_false (enable_times))
800 {
801 if (ecb_expect_false (!times_valid))
802 coro_times_update ();
803
804 coro_times_sub (c);
805 }
806
807 if (ecb_expect_false (c->on_enter))
808 {
809 int i;
810
811 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
812 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
813 }
814
815 if (ecb_expect_false (c->on_enter_xs))
816 {
817 int i;
818
819 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
820 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
821 }
822
823 SWAP_SVS_ENTER (c);
518} 824}
519 825
520static void 826static void
521save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
522{ 828{
829 SWAP_SVS_LEAVE (c);
830
831 if (ecb_expect_false (c->on_leave_xs))
832 {
833 int i;
834
835 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
836 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
837 }
838
839 if (ecb_expect_false (c->on_leave))
840 {
841 int i;
842
843 for (i = AvFILLp (c->on_leave); i >= 0; --i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
845 }
846
847 times_valid = 0;
848
849 if (ecb_expect_false (enable_times))
850 {
851 coro_times_update (); times_valid = 1;
852 coro_times_add (c);
853 }
854
523 c->except = CORO_THROW; 855 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 856 c->slf_frame = slf_frame;
525 857
526 { 858 {
527 dSP; 859 dSP;
… …
536 868
537 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
539 for (;;) 871 for (;;)
540 { 872 {
541 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
542 { 874 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
544 876
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 877 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 878 {
547 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
548 880
549 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
550 { 882 {
551 EXTEND (SP, 3); 883 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
558 } 890 }
559 } 891 }
560 } 892 }
561 893
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 895 break;
564 896
565 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
569 901
570 PUTBACK; 902 PUTBACK;
571 } 903 }
572 904
573 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 907 {
579 int i; 908 unsigned int i;
909
580 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 911 CXINC;
582 } 912
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
584 915
585 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
586 917
587 { 918 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 920
590 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
591 slot->defsv = DEFSV; 922 save_perl_slots (slot);
592 slot->errsv = ERRSV; 923#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 925 #include "state.h"
597 #undef VAR 926#endif
598 } 927 }
599} 928}
600 929
601/* 930/*
602 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
… …
608# define coro_init_stacks(thx) init_stacks () 937# define coro_init_stacks(thx) init_stacks ()
609#else 938#else
610static void 939static void
611coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
612{ 941{
613 PL_curstackinfo = new_stackinfo(32, 8); 942 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 946
618 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 962#endif
634 963
635 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 966 PL_scopestack_max = 8;
967#if HAS_SCOPESTACK_NAME
968 New(54,PL_scopestack_name,8,const char*);
969#endif
638 970
639 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 973 PL_savestack_max = 24;
974#if PERL_VERSION_ATLEAST (5,24,0)
975 /* perl 5.24 moves SS_MAXPUSH optimisation from */
976 /* the header macros to PL_savestack_max */
977 PL_savestack_max -= SS_MAXPUSH;
978#endif
642 979
643#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
644 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
645 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
646 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
670 } 1007 }
671 1008
672 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
675 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
678#endif 1018#endif
679} 1019}
680 1020
1021#define CORO_RSS \
1022 rss += sizeof (SYM (curstackinfo)); \
1023 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
1024 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
1025 rss += SYM (tmps_max) * sizeof (SV *); \
1026 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
1027 rss += SYM (scopestack_max) * sizeof (I32); \
1028 rss += SYM (savestack_max) * sizeof (ANY);
1029
681static size_t 1030static size_t
682coro_rss (pTHX_ struct coro *coro) 1031coro_rss (pTHX_ struct coro *coro)
683{ 1032{
684 size_t rss = sizeof (*coro); 1033 size_t rss = sizeof (*coro);
685 1034
686 if (coro->mainstack) 1035 if (coro->mainstack)
687 { 1036 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 1037 if (coro->flags & CF_RUNNING)
692 { 1038 {
693 slot = &tmp_slot; 1039 #define SYM(sym) PL_ ## sym
694 1040 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 1041 #undef SYM
698 } 1042 }
699 else 1043 else
700 slot = coro->slot;
701
702 if (slot)
703 { 1044 {
704 rss += sizeof (slot->curstackinfo); 1045 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1046 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1047 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 1048 }
716 } 1049 }
717 1050
718 return rss; 1051 return rss;
719} 1052}
720 1053
721/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
722
723static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
724static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
725static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
726 1055
727/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
728#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
729#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
730 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
731 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
732#endif 1061#endif
733 1062
1063/* this will be a patched copy of PL_vtbl_sigelem */
1064static MGVTBL coro_sigelem_vtbl;
1065
1066static int ecb_cold
1067coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1068{
1069 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1070 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1071 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1072 return 1;
1073}
1074
1075/* perl does not have a %SIG vtbl, we provide one so we can override */
1076/* the cwvtblagic for %SIG members */
1077static const MGVTBL coro_sig_vtbl = {
1078 0, 0, 0, 0, 0,
1079 coro_sig_copy
1080};
1081
734/* 1082/*
735 * This overrides the default magic get method of %SIG elements. 1083 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1084 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 1085 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 1086 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 1087 */
743static int 1088static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1089coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 1090{
746 const char *s = MgPV_nolen_const (mg); 1091 const char *s = MgPV_nolen_const (mg);
747 1092
748 if (*s == '_') 1093 if (*s == '_')
749 { 1094 {
750 SV **svp = 0; 1095 SV **svp = 0;
751 1096
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1097 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1098 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754 1099
755 if (svp) 1100 if (svp)
756 { 1101 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1102 SV *ssv;
1103
1104 if (!*svp)
1105 ssv = &PL_sv_undef;
1106 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1107 ssv = sv_2mortal (newRV_inc (*svp));
1108 else
1109 ssv = *svp;
1110
1111 sv_setsv (sv, ssv);
758 return 0; 1112 return 0;
759 } 1113 }
760 } 1114 }
761 1115
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1116 return PL_vtbl_sigelem.svt_get ? PL_vtbl_sigelem.svt_get (aTHX_ sv, mg) : 0;
763} 1117}
764 1118
765static int 1119static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1120coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1121{
768 const char *s = MgPV_nolen_const (mg); 1122 const char *s = MgPV_nolen_const (mg);
769 1123
770 if (*s == '_') 1124 if (*s == '_')
… …
781 SvREFCNT_dec (old); 1135 SvREFCNT_dec (old);
782 return 0; 1136 return 0;
783 } 1137 }
784 } 1138 }
785 1139
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1140 return PL_vtbl_sigelem.svt_clear ? PL_vtbl_sigelem.svt_clear (aTHX_ sv, mg) : 0;
787} 1141}
788 1142
789static int 1143static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1144coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1145{
792 const char *s = MgPV_nolen_const (mg); 1146 const char *s = MgPV_nolen_const (mg);
793 1147
794 if (*s == '_') 1148 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1153 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1154
801 if (svp) 1155 if (svp)
802 { 1156 {
803 SV *old = *svp; 1157 SV *old = *svp;
804 *svp = newSVsv (sv); 1158 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1159 SvREFCNT_dec (old);
806 return 0; 1160 return 0;
807 } 1161 }
808 } 1162 }
809 1163
810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1164 return PL_vtbl_sigelem.svt_set ? PL_vtbl_sigelem.svt_set (aTHX_ sv, mg) : 0;
811} 1165}
812 1166
813static void 1167static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta) 1168prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{ 1169{
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1175slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1176{
823 return 0; 1177 return 0;
824} 1178}
825 1179
826static UNOP coro_setup_op; 1180static int
1181slf_check_repeat (pTHX_ struct CoroSLF *frame)
1182{
1183 return 1;
1184}
827 1185
828static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1186/** coroutine stack handling ************************************************/
1187
1188static UNOP init_perl_op;
1189
1190ecb_noinline static void /* noinline to keep it out of the transfer fast path */
829coro_setup (pTHX_ struct coro *coro) 1191init_perl (pTHX_ struct coro *coro)
830{ 1192{
831 /* 1193 /*
832 * emulate part of the perl startup here. 1194 * emulate part of the perl startup here.
833 */ 1195 */
834 coro_init_stacks (aTHX); 1196 coro_init_stacks (aTHX);
835 1197
836 PL_runops = RUNOPS_DEFAULT; 1198 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1199 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1200 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1201 PL_comppad = 0;
1202 PL_comppad_name = 0;
1203 PL_comppad_name_fill = 0;
1204 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1205 PL_curpm = 0;
841 PL_curpad = 0; 1206 PL_curpad = 0;
842 PL_localizing = 0; 1207 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1208 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1209#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1210 PL_parser = 0;
847#endif 1211#endif
1212 PL_hints = 0;
848 1213
849 /* recreate the die/warn hooks */ 1214 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1215 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1216 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1217
853 GvSV (PL_defgv) = newSV (0); 1218 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1219 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1220 GvSV (PL_errgv) = newSV (0);
856 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1221 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1222 GvHV (PL_hintgv) = newHV ();
1223#if PERL_VERSION_ATLEAST (5,10,0)
1224 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1225#endif
857 PL_rs = newSVsv (GvSV (irsgv)); 1226 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1227 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1228
860 { 1229 {
861 dSP; 1230 dSP;
862 UNOP myop; 1231 UNOP myop;
863 1232
864 Zero (&myop, 1, UNOP); 1233 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1234 myop.op_next = Nullop;
1235 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1236 myop.op_flags = OPf_WANT_VOID;
867 1237
868 PUSHMARK (SP); 1238 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1239 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1240 PUTBACK;
871 PL_op = (OP *)&myop; 1241 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1242 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1243 }
875 1244
876 /* this newly created coroutine might be run on an existing cctx which most 1245 /* this newly created coroutine might be run on an existing cctx which most
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1246 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1247 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1248 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1249 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1250 slf_frame.destroy = 0;
881 1251
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1252 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op; 1253 init_perl_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM; 1254 init_perl_op.op_type = OP_ENTERSUB;
885 coro_setup_op.op_ppaddr = pp_slf; 1255 init_perl_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */ 1256 /* no flags etc. required, as an init function won't be called */
887 1257
888 PL_op = (OP *)&coro_setup_op; 1258 PL_op = (OP *)&init_perl_op;
889 1259
890 /* copy throw, in case it was set before coro_setup */ 1260 /* copy throw, in case it was set before init_perl */
891 CORO_THROW = coro->except; 1261 CORO_THROW = coro->except;
892}
893 1262
1263 SWAP_SVS_ENTER (coro);
1264
1265 if (ecb_expect_false (enable_times))
1266 {
1267 coro_times_update ();
1268 coro_times_sub (coro);
1269 }
1270}
1271
894static void 1272static void
895coro_destruct (pTHX_ struct coro *coro) 1273coro_unwind_stacks (pTHX)
896{ 1274{
897 if (!IN_DESTRUCT) 1275 if (!IN_DESTRUCT)
898 { 1276 {
899 /* restore all saved variables and stuff */ 1277 /* restore all saved variables and stuff */
900 LEAVE_SCOPE (0); 1278 LEAVE_SCOPE (0);
… …
908 POPSTACK_TO (PL_mainstack); 1286 POPSTACK_TO (PL_mainstack);
909 1287
910 /* unwind main stack */ 1288 /* unwind main stack */
911 dounwind (-1); 1289 dounwind (-1);
912 } 1290 }
1291}
913 1292
914 SvREFCNT_dec (GvSV (PL_defgv)); 1293static void
915 SvREFCNT_dec (GvAV (PL_defgv)); 1294destroy_perl (pTHX_ struct coro *coro)
916 SvREFCNT_dec (GvSV (PL_errgv)); 1295{
917 SvREFCNT_dec (PL_defoutgv); 1296 SV *svf [9];
918 SvREFCNT_dec (PL_rs);
919 SvREFCNT_dec (GvSV (irsgv));
920 1297
921 SvREFCNT_dec (PL_diehook);
922 SvREFCNT_dec (PL_warnhook);
923 1298 {
924 SvREFCNT_dec (CORO_THROW); 1299 SV *old_current = SvRV (coro_current);
1300 struct coro *current = SvSTATE (old_current);
1301
1302 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1303
1304 save_perl (aTHX_ current);
1305
1306 /* this will cause transfer_check to croak on block*/
1307 SvRV_set (coro_current, (SV *)coro->hv);
1308
1309 load_perl (aTHX_ coro);
1310
1311 /* restore swapped sv's */
1312 SWAP_SVS_LEAVE (coro);
1313
1314 coro_unwind_stacks (aTHX);
1315
1316 coro_destruct_stacks (aTHX);
1317
1318 /* now save some sv's to be free'd later */
1319 svf [0] = GvSV (PL_defgv);
1320 svf [1] = (SV *)GvAV (PL_defgv);
1321 svf [2] = GvSV (PL_errgv);
1322 svf [3] = (SV *)PL_defoutgv;
1323 svf [4] = PL_rs;
1324 svf [5] = GvSV (irsgv);
1325 svf [6] = (SV *)GvHV (PL_hintgv);
1326 svf [7] = PL_diehook;
1327 svf [8] = PL_warnhook;
1328 assert (9 == sizeof (svf) / sizeof (*svf));
1329
1330 SvRV_set (coro_current, old_current);
1331
1332 load_perl (aTHX_ current);
1333 }
1334
1335 {
1336 unsigned int i;
1337
1338 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1339 SvREFCNT_dec (svf [i]);
1340
925 SvREFCNT_dec (coro->saved_deffh); 1341 SvREFCNT_dec (coro->saved_deffh);
926 SvREFCNT_dec (coro->rouse_cb); 1342 SvREFCNT_dec (coro->rouse_cb);
927 1343 SvREFCNT_dec (coro->invoke_cb);
928 coro_destruct_stacks (aTHX); 1344 SvREFCNT_dec (coro->invoke_av);
1345 SvREFCNT_dec (coro->on_enter_xs);
1346 SvREFCNT_dec (coro->on_leave_xs);
1347 }
929} 1348}
930 1349
931INLINE void 1350ecb_inline void
932free_coro_mortal (pTHX) 1351free_coro_mortal (pTHX)
933{ 1352{
934 if (expect_true (coro_mortal)) 1353 if (ecb_expect_true (coro_mortal))
935 { 1354 {
936 SvREFCNT_dec (coro_mortal); 1355 SvREFCNT_dec ((SV *)coro_mortal);
937 coro_mortal = 0; 1356 coro_mortal = 0;
938 } 1357 }
939} 1358}
940 1359
941static int 1360static int
942runops_trace (pTHX) 1361runops_trace (pTHX)
943{ 1362{
944 COP *oldcop = 0; 1363 COP *oldcop = 0;
945 int oldcxix = -2; 1364 int oldcxix = -2;
946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
947 coro_cctx *cctx = coro->cctx;
948 1365
949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1366 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
950 { 1367 {
951 PERL_ASYNC_CHECK (); 1368 PERL_ASYNC_CHECK ();
952 1369
953 if (cctx->flags & CC_TRACE_ALL) 1370 if (cctx_current->flags & CC_TRACE_ALL)
954 { 1371 {
955 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1372 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
956 { 1373 {
957 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1374 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
958 SV **bot, **top; 1375 SV **bot, **top;
959 AV *av = newAV (); /* return values */ 1376 AV *av = newAV (); /* return values */
960 SV **cb; 1377 SV **cb;
… …
997 1414
998 if (PL_curcop != &PL_compiling) 1415 if (PL_curcop != &PL_compiling)
999 { 1416 {
1000 SV **cb; 1417 SV **cb;
1001 1418
1002 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1419 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1003 { 1420 {
1004 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1421 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1005 1422
1006 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1423 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1007 { 1424 {
1008 runops_proc_t old_runops = PL_runops;
1009 dSP; 1425 dSP;
1010 GV *gv = CvGV (cx->blk_sub.cv); 1426 GV *gv = CvGV (cx->blk_sub.cv);
1011 SV *fullname = sv_2mortal (newSV (0)); 1427 SV *fullname = sv_2mortal (newSV (0));
1012 1428
1013 if (isGV (gv)) 1429 if (isGV (gv))
… …
1018 SAVETMPS; 1434 SAVETMPS;
1019 EXTEND (SP, 3); 1435 EXTEND (SP, 3);
1020 PUSHMARK (SP); 1436 PUSHMARK (SP);
1021 PUSHs (&PL_sv_yes); 1437 PUSHs (&PL_sv_yes);
1022 PUSHs (fullname); 1438 PUSHs (fullname);
1023 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1439 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1024 PUTBACK; 1440 PUTBACK;
1025 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1441 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1026 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1442 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1027 SPAGAIN; 1443 SPAGAIN;
1028 FREETMPS; 1444 FREETMPS;
… …
1031 } 1447 }
1032 1448
1033 oldcxix = cxstack_ix; 1449 oldcxix = cxstack_ix;
1034 } 1450 }
1035 1451
1036 if (cctx->flags & CC_TRACE_LINE) 1452 if (cctx_current->flags & CC_TRACE_LINE)
1037 { 1453 {
1038 dSP; 1454 dSP;
1039 1455
1040 PL_runops = RUNOPS_DEFAULT; 1456 PL_runops = RUNOPS_DEFAULT;
1041 ENTER; 1457 ENTER;
… …
1060 1476
1061 TAINT_NOT; 1477 TAINT_NOT;
1062 return 0; 1478 return 0;
1063} 1479}
1064 1480
1065static struct coro_cctx *cctx_ssl_cctx;
1066static struct CoroSLF cctx_ssl_frame; 1481static struct CoroSLF cctx_ssl_frame;
1067 1482
1068static void 1483static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1484slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{ 1485{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0; 1486 ta->prev = 0;
1073} 1487}
1074 1488
1075static int 1489static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1490slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{ 1491{
… …
1079 1493
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1494 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081} 1495}
1082 1496
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1497/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1084static void NOINLINE 1498static void ecb_noinline
1085cctx_prepare (pTHX_ coro_cctx *cctx) 1499cctx_prepare (pTHX)
1086{ 1500{
1087 PL_top_env = &PL_start_env; 1501 PL_top_env = &PL_start_env;
1088 1502
1089 if (cctx->flags & CC_TRACE) 1503 if (cctx_current->flags & CC_TRACE)
1090 PL_runops = runops_trace; 1504 PL_runops = runops_trace;
1091 1505
1092 /* we already must be executing an SLF op, there is no other valid way 1506 /* we already must be executing an SLF op, there is no other valid way
1093 * that can lead to creation of a new cctx */ 1507 * that can lead to creation of a new cctx */
1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1508 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1509 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1096 1510
1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1511 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1098 cctx_ssl_cctx = cctx;
1099 cctx_ssl_frame = slf_frame; 1512 cctx_ssl_frame = slf_frame;
1100 1513
1101 slf_frame.prepare = slf_prepare_set_stacklevel; 1514 slf_frame.prepare = slf_prepare_set_stacklevel;
1102 slf_frame.check = slf_check_set_stacklevel; 1515 slf_frame.check = slf_check_set_stacklevel;
1103} 1516}
1104 1517
1105/* the tail of transfer: execute stuff we can only do after a transfer */ 1518/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void 1519ecb_inline void
1107transfer_tail (pTHX) 1520transfer_tail (pTHX)
1108{ 1521{
1109 free_coro_mortal (aTHX); 1522 free_coro_mortal (aTHX);
1523}
1524
1525/* try to exit the same way perl's main function would do */
1526/* we do not bother resetting the environment or other things *7
1527/* that are not, uhm, essential */
1528/* this obviously also doesn't work when perl is embedded */
1529static void ecb_noinline ecb_cold
1530perlish_exit (pTHX)
1531{
1532 int exitstatus = perl_destruct (PL_curinterp);
1533 perl_free (PL_curinterp);
1534 exit (exitstatus);
1110} 1535}
1111 1536
1112/* 1537/*
1113 * this is a _very_ stripped down perl interpreter ;) 1538 * this is a _very_ stripped down perl interpreter ;)
1114 */ 1539 */
… …
1126 /* normally we would need to skip the entersub here */ 1551 /* normally we would need to skip the entersub here */
1127 /* not doing so will re-execute it, which is exactly what we want */ 1552 /* not doing so will re-execute it, which is exactly what we want */
1128 /* PL_nop = PL_nop->op_next */ 1553 /* PL_nop = PL_nop->op_next */
1129 1554
1130 /* inject a fake subroutine call to cctx_init */ 1555 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1556 cctx_prepare (aTHX);
1132 1557
1133 /* cctx_run is the alternative tail of transfer() */ 1558 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1559 transfer_tail (aTHX);
1135 1560
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1561 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1562 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1563 perl_run (PL_curinterp);
1564 /*
1565 * Unfortunately, there is no way to get at the return values of the
1566 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1567 * runtime errors here, as this is just a random interpreter, not a thread.
1568 */
1569
1570 /*
1571 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1572 * requires PL_scopestack_ix, so do it here if required.
1573 */
1574 if (!PL_scopestack_ix)
1575 ENTER;
1139 1576
1140 /* 1577 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1578 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1579 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1580 * reason for perl_run to return. We try to mimic whatever perl is normally
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1581 * doing in that case. YMMV.
1145 * coroutine as Coro has no such concept
1146 */ 1582 */
1147 PL_top_env = main_top_env; 1583 perlish_exit (aTHX);
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1584 }
1150} 1585}
1151 1586
1152static coro_cctx * 1587static coro_cctx *
1153cctx_new () 1588cctx_new (void)
1154{ 1589{
1155 coro_cctx *cctx; 1590 coro_cctx *cctx;
1156 1591
1157 ++cctx_count; 1592 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx); 1593 New (0, cctx, 1, coro_cctx);
… …
1164 return cctx; 1599 return cctx;
1165} 1600}
1166 1601
1167/* create a new cctx only suitable as source */ 1602/* create a new cctx only suitable as source */
1168static coro_cctx * 1603static coro_cctx *
1169cctx_new_empty () 1604cctx_new_empty (void)
1170{ 1605{
1171 coro_cctx *cctx = cctx_new (); 1606 coro_cctx *cctx = cctx_new ();
1172 1607
1173 cctx->sptr = 0; 1608 cctx->stack.sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0); 1609 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175 1610
1176 return cctx; 1611 return cctx;
1177} 1612}
1178 1613
1179/* create a new cctx suitable as destination/running a perl interpreter */ 1614/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx * 1615static coro_cctx *
1181cctx_new_run () 1616cctx_new_run (void)
1182{ 1617{
1183 coro_cctx *cctx = cctx_new (); 1618 coro_cctx *cctx = cctx_new ();
1184 void *stack_start;
1185 size_t stack_size;
1186 1619
1187#if HAVE_MMAP 1620 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1189 /* mmap supposedly does allocate-on-write for us */
1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1191
1192 if (cctx->sptr != (void *)-1)
1193 {
1194 #if CORO_STACKGUARD
1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1196 #endif
1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1199 cctx->flags |= CC_MAPPED;
1200 } 1621 {
1201 else
1202#endif
1203 {
1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1205 New (0, cctx->sptr, cctx_stacksize, long);
1206
1207 if (!cctx->sptr)
1208 {
1209 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1622 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1210 _exit (EXIT_FAILURE); 1623 _exit (EXIT_FAILURE);
1211 }
1212
1213 stack_start = cctx->sptr;
1214 stack_size = cctx->ssize;
1215 } 1624 }
1216 1625
1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1626 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1222 1627
1223 return cctx; 1628 return cctx;
1224} 1629}
1225 1630
1226static void 1631static void
1227cctx_destroy (coro_cctx *cctx) 1632cctx_destroy (coro_cctx *cctx)
1228{ 1633{
1229 if (!cctx) 1634 if (!cctx)
1230 return; 1635 return;
1231 1636
1637 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1638
1232 --cctx_count; 1639 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1640 coro_destroy (&cctx->cctx);
1234 1641
1235 /* coro_transfer creates new, empty cctx's */ 1642 coro_stack_free (&cctx->stack);
1236 if (cctx->sptr)
1237 {
1238 #if CORO_USE_VALGRIND
1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1240 #endif
1241
1242#if HAVE_MMAP
1243 if (cctx->flags & CC_MAPPED)
1244 munmap (cctx->sptr, cctx->ssize);
1245 else
1246#endif
1247 Safefree (cctx->sptr);
1248 }
1249 1643
1250 Safefree (cctx); 1644 Safefree (cctx);
1251} 1645}
1252 1646
1253/* wether this cctx should be destructed */ 1647/* wether this cctx should be destructed */
1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1648#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1255 1649
1256static coro_cctx * 1650static coro_cctx *
1257cctx_get (pTHX) 1651cctx_get (pTHX)
1258{ 1652{
1259 while (expect_true (cctx_first)) 1653 while (ecb_expect_true (cctx_first))
1260 { 1654 {
1261 coro_cctx *cctx = cctx_first; 1655 coro_cctx *cctx = cctx_first;
1262 cctx_first = cctx->next; 1656 cctx_first = cctx->next;
1263 --cctx_idle; 1657 --cctx_idle;
1264 1658
1265 if (expect_true (!CCTX_EXPIRED (cctx))) 1659 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1266 return cctx; 1660 return cctx;
1267 1661
1268 cctx_destroy (cctx); 1662 cctx_destroy (cctx);
1269 } 1663 }
1270 1664
… …
1272} 1666}
1273 1667
1274static void 1668static void
1275cctx_put (coro_cctx *cctx) 1669cctx_put (coro_cctx *cctx)
1276{ 1670{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1671 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1278 1672
1279 /* free another cctx if overlimit */ 1673 /* free another cctx if overlimit */
1280 if (expect_false (cctx_idle >= cctx_max_idle)) 1674 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1281 { 1675 {
1282 coro_cctx *first = cctx_first; 1676 coro_cctx *first = cctx_first;
1283 cctx_first = first->next; 1677 cctx_first = first->next;
1284 --cctx_idle; 1678 --cctx_idle;
1285 1679
… …
1296static void 1690static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1691transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1692{
1299 /* TODO: throwing up here is considered harmful */ 1693 /* TODO: throwing up here is considered harmful */
1300 1694
1301 if (expect_true (prev != next)) 1695 if (ecb_expect_true (prev != next))
1302 { 1696 {
1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1697 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1698 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1305 1699
1306 if (expect_false (next->flags & CF_RUNNING)) 1700 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1308
1309 if (expect_false (next->flags & CF_DESTROYED))
1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1701 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1311 1702
1312#if !PERL_VERSION_ATLEAST (5,10,0) 1703#if !PERL_VERSION_ATLEAST (5,10,0)
1313 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1704 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1705 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1315#endif 1706#endif
1316 } 1707 }
1317} 1708}
1318 1709
1319/* always use the TRANSFER macro */ 1710/* always use the TRANSFER macro */
1320static void NOINLINE /* noinline so we have a fixed stackframe */ 1711static void ecb_noinline /* noinline so we have a fixed stackframe */
1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1712transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1322{ 1713{
1323 dSTACKLEVEL; 1714 dSTACKLEVEL;
1324 1715
1325 /* sometimes transfer is only called to set idle_sp */ 1716 /* sometimes transfer is only called to set idle_sp */
1326 if (expect_false (!next)) 1717 if (ecb_expect_false (!prev))
1327 { 1718 {
1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1719 cctx_current->idle_sp = STACKLEVEL;
1329 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1720 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1330 } 1721 }
1331 else if (expect_true (prev != next)) 1722 else if (ecb_expect_true (prev != next))
1332 { 1723 {
1333 coro_cctx *prev__cctx; 1724 coro_cctx *cctx_prev;
1334 1725
1335 if (expect_false (prev->flags & CF_NEW)) 1726 if (ecb_expect_false (prev->flags & CF_NEW))
1336 { 1727 {
1337 /* create a new empty/source context */ 1728 /* create a new empty/source context */
1338 prev->cctx = cctx_new_empty ();
1339 prev->flags &= ~CF_NEW; 1729 prev->flags &= ~CF_NEW;
1340 prev->flags |= CF_RUNNING; 1730 prev->flags |= CF_RUNNING;
1341 } 1731 }
1342 1732
1343 prev->flags &= ~CF_RUNNING; 1733 prev->flags &= ~CF_RUNNING;
1344 next->flags |= CF_RUNNING; 1734 next->flags |= CF_RUNNING;
1345 1735
1346 /* first get rid of the old state */ 1736 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1737 save_perl (aTHX_ prev);
1348 1738
1349 if (expect_false (next->flags & CF_NEW)) 1739 if (ecb_expect_false (next->flags & CF_NEW))
1350 { 1740 {
1351 /* need to start coroutine */ 1741 /* need to start coroutine */
1352 next->flags &= ~CF_NEW; 1742 next->flags &= ~CF_NEW;
1353 /* setup coroutine call */ 1743 /* setup coroutine call */
1354 coro_setup (aTHX_ next); 1744 init_perl (aTHX_ next);
1355 } 1745 }
1356 else 1746 else
1357 load_perl (aTHX_ next); 1747 load_perl (aTHX_ next);
1358 1748
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1749 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1750 if (ecb_expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1751 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1752 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1753 && !force_cctx
1366 )) 1754 ))
1367 { 1755 {
1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1756 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1757 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1758
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1759 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1760 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1761 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1762 if (ecb_expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1763 next->cctx = cctx_get (aTHX);
1378 1764
1379 cctx_put (prev__cctx); 1765 cctx_put (cctx_current);
1380 } 1766 }
1767 else
1768 prev->cctx = cctx_current;
1381 1769
1382 ++next->usecount; 1770 ++next->usecount;
1383 1771
1384 if (expect_true (!next->cctx)) 1772 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1773 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1774
1387 if (expect_false (prev__cctx != next->cctx)) 1775 next->cctx = 0;
1776
1777 if (ecb_expect_false (cctx_prev != cctx_current))
1388 { 1778 {
1389 prev__cctx->top_env = PL_top_env; 1779 cctx_prev->top_env = PL_top_env;
1390 PL_top_env = next->cctx->top_env; 1780 PL_top_env = cctx_current->top_env;
1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1781 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1392 } 1782 }
1393 1783
1394 transfer_tail (aTHX); 1784 transfer_tail (aTHX);
1395 } 1785 }
1396} 1786}
… …
1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1788#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1789#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1400 1790
1401/** high level stuff ********************************************************/ 1791/** high level stuff ********************************************************/
1402 1792
1793/* this function is actually Coro, not Coro::State, but we call it from here */
1794/* because it is convenient - but it hasn't been declared yet for that reason */
1403static int 1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro);
1797
1798static void
1404coro_state_destroy (pTHX_ struct coro *coro) 1799coro_state_destroy (pTHX_ struct coro *coro)
1405{ 1800{
1406 if (coro->flags & CF_DESTROYED) 1801 if (coro->flags & CF_ZOMBIE)
1407 return 0; 1802 return;
1408 1803
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro); 1804 slf_destroy (aTHX_ coro);
1411 1805
1412 coro->flags |= CF_DESTROYED; 1806 coro->flags |= CF_ZOMBIE;
1413 1807
1414 if (coro->flags & CF_READY) 1808 if (coro->flags & CF_READY)
1415 { 1809 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1810 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1811 /* alternative: look through all ready queues and remove the coro */
1418 --coro_nready; 1812 --coro_nready;
1419 } 1813 }
1420 else 1814 else
1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1815 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1422 1816
1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1424 {
1425 struct coro temp;
1426
1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1428
1429 save_perl (aTHX_ &temp);
1430 load_perl (aTHX_ coro);
1431
1432 coro_destruct (aTHX_ coro);
1433
1434 load_perl (aTHX_ &temp);
1435
1436 coro->slot = 0;
1437 }
1438
1439 cctx_destroy (coro->cctx);
1440 SvREFCNT_dec (coro->args);
1441
1442 if (coro->next) coro->next->prev = coro->prev; 1817 if (coro->next) coro->next->prev = coro->prev;
1443 if (coro->prev) coro->prev->next = coro->next; 1818 if (coro->prev) coro->prev->next = coro->next;
1444 if (coro == coro_first) coro_first = coro->next; 1819 if (coro == coro_first) coro_first = coro->next;
1445 1820
1446 return 1; 1821 if (coro->mainstack
1822 && coro->mainstack != main_mainstack
1823 && coro->slot
1824 && !PL_dirty)
1825 destroy_perl (aTHX_ coro);
1826
1827 cctx_destroy (coro->cctx);
1828 SvREFCNT_dec (coro->startcv);
1829 SvREFCNT_dec (coro->args);
1830 SvREFCNT_dec (coro->swap_sv);
1831 SvREFCNT_dec (CORO_THROW);
1832
1833 coro_call_on_destroy (aTHX_ coro);
1834
1835 /* more destruction mayhem in coro_state_free */
1447} 1836}
1448 1837
1449static int 1838static int
1450coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1839coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1451{ 1840{
1452 struct coro *coro = (struct coro *)mg->mg_ptr; 1841 struct coro *coro = (struct coro *)mg->mg_ptr;
1453 mg->mg_ptr = 0; 1842 mg->mg_ptr = 0;
1454 1843
1455 coro->hv = 0;
1456
1457 if (--coro->refcnt < 0)
1458 {
1459 coro_state_destroy (aTHX_ coro); 1844 coro_state_destroy (aTHX_ coro);
1845 SvREFCNT_dec (coro->on_destroy);
1846 SvREFCNT_dec (coro->status);
1847
1460 Safefree (coro); 1848 Safefree (coro);
1461 }
1462 1849
1463 return 0; 1850 return 0;
1464} 1851}
1465 1852
1466static int 1853static int ecb_cold
1467coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1854coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1468{ 1855{
1469 struct coro *coro = (struct coro *)mg->mg_ptr; 1856 /* called when perl clones the current process the slow way (windows process emulation) */
1470 1857 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1471 ++coro->refcnt; 1858 mg->mg_ptr = 0;
1859 mg->mg_virtual = 0;
1472 1860
1473 return 0; 1861 return 0;
1474} 1862}
1475 1863
1476static MGVTBL coro_state_vtbl = { 1864static MGVTBL coro_state_vtbl = {
… …
1499 1887
1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1888 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1501 TRANSFER (ta, 1); 1889 TRANSFER (ta, 1);
1502} 1890}
1503 1891
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1527/** Coro ********************************************************************/ 1892/** Coro ********************************************************************/
1528 1893
1529INLINE void 1894ecb_inline void
1530coro_enq (pTHX_ struct coro *coro) 1895coro_enq (pTHX_ struct coro *coro)
1531{ 1896{
1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1897 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1533}
1534 1898
1535INLINE SV * 1899 SvREFCNT_inc_NN (coro->hv);
1900
1901 coro->next_ready = 0;
1902 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1903 ready [1] = coro;
1904}
1905
1906ecb_inline struct coro *
1536coro_deq (pTHX) 1907coro_deq (pTHX)
1537{ 1908{
1538 int prio; 1909 int prio;
1539 1910
1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1911 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1541 if (AvFILLp (coro_ready [prio]) >= 0) 1912 {
1542 return av_shift (coro_ready [prio]); 1913 struct coro **ready = coro_ready [prio];
1914
1915 if (ready [0])
1916 {
1917 struct coro *coro = ready [0];
1918 ready [0] = coro->next_ready;
1919 return coro;
1920 }
1921 }
1543 1922
1544 return 0; 1923 return 0;
1924}
1925
1926static void
1927invoke_sv_ready_hook_helper (void)
1928{
1929 dTHX;
1930 dSP;
1931
1932 ENTER;
1933 SAVETMPS;
1934
1935 PUSHMARK (SP);
1936 PUTBACK;
1937 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1938
1939 FREETMPS;
1940 LEAVE;
1545} 1941}
1546 1942
1547static int 1943static int
1548api_ready (pTHX_ SV *coro_sv) 1944api_ready (pTHX_ SV *coro_sv)
1549{ 1945{
1550 struct coro *coro;
1551 SV *sv_hook;
1552 void (*xs_hook)(void);
1553
1554 if (SvROK (coro_sv))
1555 coro_sv = SvRV (coro_sv);
1556
1557 coro = SvSTATE (coro_sv); 1946 struct coro *coro = SvSTATE (coro_sv);
1558 1947
1559 if (coro->flags & CF_READY) 1948 if (coro->flags & CF_READY)
1560 return 0; 1949 return 0;
1561 1950
1562 coro->flags |= CF_READY; 1951 coro->flags |= CF_READY;
1563 1952
1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1566
1567 coro_enq (aTHX_ coro); 1953 coro_enq (aTHX_ coro);
1568 ++coro_nready;
1569 1954
1570 if (sv_hook) 1955 if (!coro_nready++)
1571 { 1956 if (coroapi.readyhook)
1572 dSP; 1957 coroapi.readyhook ();
1573
1574 ENTER;
1575 SAVETMPS;
1576
1577 PUSHMARK (SP);
1578 PUTBACK;
1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1580
1581 FREETMPS;
1582 LEAVE;
1583 }
1584
1585 if (xs_hook)
1586 xs_hook ();
1587 1958
1588 return 1; 1959 return 1;
1589} 1960}
1590 1961
1591static int 1962static int
1592api_is_ready (pTHX_ SV *coro_sv) 1963api_is_ready (pTHX_ SV *coro_sv)
1593{ 1964{
1594 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1965 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1595} 1966}
1596 1967
1597INLINE void 1968/* expects to own a reference to next->hv */
1969ecb_inline void
1598prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1970prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1599{ 1971{
1600 SV *prev_sv, *next_sv;
1601
1602 for (;;)
1603 {
1604 next_sv = coro_deq (aTHX);
1605
1606 /* nothing to schedule: call the idle handler */
1607 if (expect_false (!next_sv))
1608 {
1609 dSP;
1610
1611 ENTER;
1612 SAVETMPS;
1613
1614 PUSHMARK (SP);
1615 PUTBACK;
1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1617
1618 FREETMPS;
1619 LEAVE;
1620 continue;
1621 }
1622
1623 ta->next = SvSTATE_hv (next_sv);
1624
1625 /* cannot transfer to destroyed coros, skip and look for next */
1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1627 {
1628 SvREFCNT_dec (next_sv);
1629 /* coro_nready has already been taken care of by destroy */
1630 continue;
1631 }
1632
1633 --coro_nready;
1634 break;
1635 }
1636
1637 /* free this only after the transfer */
1638 prev_sv = SvRV (coro_current); 1972 SV *prev_sv = SvRV (coro_current);
1973
1639 ta->prev = SvSTATE_hv (prev_sv); 1974 ta->prev = SvSTATE_hv (prev_sv);
1975 ta->next = next;
1976
1640 TRANSFER_CHECK (*ta); 1977 TRANSFER_CHECK (*ta);
1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1978
1642 ta->next->flags &= ~CF_READY;
1643 SvRV_set (coro_current, next_sv); 1979 SvRV_set (coro_current, (SV *)next->hv);
1644 1980
1645 free_coro_mortal (aTHX); 1981 free_coro_mortal (aTHX);
1646 coro_mortal = prev_sv; 1982 coro_mortal = prev_sv;
1647} 1983}
1648 1984
1649INLINE void 1985static void
1986prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1987{
1988 for (;;)
1989 {
1990 struct coro *next = coro_deq (aTHX);
1991
1992 if (ecb_expect_true (next))
1993 {
1994 /* cannot transfer to destroyed coros, skip and look for next */
1995 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1996 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1997 else
1998 {
1999 next->flags &= ~CF_READY;
2000 --coro_nready;
2001
2002 prepare_schedule_to (aTHX_ ta, next);
2003 break;
2004 }
2005 }
2006 else
2007 {
2008 /* nothing to schedule: call the idle handler */
2009 if (SvROK (sv_idle)
2010 && SvOBJECT (SvRV (sv_idle)))
2011 {
2012 if (SvRV (sv_idle) == SvRV (coro_current))
2013 {
2014 require_pv ("Carp");
2015
2016 {
2017 dSP;
2018
2019 ENTER;
2020 SAVETMPS;
2021
2022 PUSHMARK (SP);
2023 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2024 PUTBACK;
2025 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2026
2027 FREETMPS;
2028 LEAVE;
2029 }
2030 }
2031
2032 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2033 api_ready (aTHX_ SvRV (sv_idle));
2034 --coro_nready;
2035 }
2036 else
2037 {
2038 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2039 dSP;
2040
2041 ENTER;
2042 SAVETMPS;
2043
2044 PUSHMARK (SP);
2045 PUTBACK;
2046 call_sv (sv_idle, G_VOID | G_DISCARD);
2047
2048 FREETMPS;
2049 LEAVE;
2050 }
2051 }
2052 }
2053}
2054
2055ecb_inline void
1650prepare_cede (pTHX_ struct coro_transfer_args *ta) 2056prepare_cede (pTHX_ struct coro_transfer_args *ta)
1651{ 2057{
1652 api_ready (aTHX_ coro_current); 2058 api_ready (aTHX_ coro_current);
1653 prepare_schedule (aTHX_ ta); 2059 prepare_schedule (aTHX_ ta);
1654} 2060}
1655 2061
1656INLINE void 2062ecb_inline void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{ 2064{
1659 SV *prev = SvRV (coro_current); 2065 SV *prev = SvRV (coro_current);
1660 2066
1661 if (coro_nready) 2067 if (coro_nready)
… …
1674 2080
1675 prepare_schedule (aTHX_ &ta); 2081 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1); 2082 TRANSFER (ta, 1);
1677} 2083}
1678 2084
2085static void
2086api_schedule_to (pTHX_ SV *coro_sv)
2087{
2088 struct coro_transfer_args ta;
2089 struct coro *next = SvSTATE (coro_sv);
2090
2091 SvREFCNT_inc_NN (coro_sv);
2092 prepare_schedule_to (aTHX_ &ta, next);
2093}
2094
1679static int 2095static int
1680api_cede (pTHX) 2096api_cede (pTHX)
1681{ 2097{
1682 struct coro_transfer_args ta; 2098 struct coro_transfer_args ta;
1683 2099
1684 prepare_cede (aTHX_ &ta); 2100 prepare_cede (aTHX_ &ta);
1685 2101
1686 if (expect_true (ta.prev != ta.next)) 2102 if (ecb_expect_true (ta.prev != ta.next))
1687 { 2103 {
1688 TRANSFER (ta, 1); 2104 TRANSFER (ta, 1);
1689 return 1; 2105 return 1;
1690 } 2106 }
1691 else 2107 else
… …
1710static void 2126static void
1711api_trace (pTHX_ SV *coro_sv, int flags) 2127api_trace (pTHX_ SV *coro_sv, int flags)
1712{ 2128{
1713 struct coro *coro = SvSTATE (coro_sv); 2129 struct coro *coro = SvSTATE (coro_sv);
1714 2130
2131 if (coro->flags & CF_RUNNING)
2132 croak ("cannot enable tracing on a running coroutine, caught");
2133
1715 if (flags & CC_TRACE) 2134 if (flags & CC_TRACE)
1716 { 2135 {
1717 if (!coro->cctx) 2136 if (!coro->cctx)
1718 coro->cctx = cctx_new_run (); 2137 coro->cctx = cctx_new_run ();
1719 else if (!(coro->cctx->flags & CC_TRACE)) 2138 else if (!(coro->cctx->flags & CC_TRACE))
1720 croak ("cannot enable tracing on coroutine with custom stack,"); 2139 croak ("cannot enable tracing on coroutine with custom stack, caught");
1721 2140
1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2141 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1723 } 2142 }
1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2143 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1725 { 2144 {
… …
1730 else 2149 else
1731 coro->slot->runops = RUNOPS_DEFAULT; 2150 coro->slot->runops = RUNOPS_DEFAULT;
1732 } 2151 }
1733} 2152}
1734 2153
2154static void
2155coro_push_av (pTHX_ AV *av, I32 gimme_v)
2156{
2157 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2158 {
2159 dSP;
2160
2161 if (gimme_v == G_SCALAR)
2162 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2163 else
2164 {
2165 int i;
2166 EXTEND (SP, AvFILLp (av) + 1);
2167
2168 for (i = 0; i <= AvFILLp (av); ++i)
2169 PUSHs (AvARRAY (av)[i]);
2170 }
2171
2172 PUTBACK;
2173 }
2174}
2175
2176static void
2177coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2178{
2179 if (!coro->on_destroy)
2180 coro->on_destroy = newAV ();
2181
2182 av_push (coro->on_destroy, cb);
2183}
2184
2185static void
2186slf_destroy_join (pTHX_ struct CoroSLF *frame)
2187{
2188 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2189}
2190
2191static int
2192slf_check_join (pTHX_ struct CoroSLF *frame)
2193{
2194 struct coro *coro = (struct coro *)frame->data;
2195
2196 if (!coro->status)
2197 return 1;
2198
2199 frame->destroy = 0;
2200
2201 coro_push_av (aTHX_ coro->status, GIMME_V);
2202
2203 SvREFCNT_dec ((SV *)coro->hv);
2204
2205 return 0;
2206}
2207
2208static void
2209slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2210{
2211 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2212
2213 if (items > 1)
2214 croak ("join called with too many arguments");
2215
2216 if (coro->status)
2217 frame->prepare = prepare_nop;
2218 else
2219 {
2220 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2221 frame->prepare = prepare_schedule;
2222 }
2223
2224 frame->check = slf_check_join;
2225 frame->destroy = slf_destroy_join;
2226 frame->data = (void *)coro;
2227 SvREFCNT_inc (coro->hv);
2228}
2229
2230static void
2231coro_call_on_destroy (pTHX_ struct coro *coro)
2232{
2233 AV *od = coro->on_destroy;
2234
2235 if (!od)
2236 return;
2237
2238 coro->on_destroy = 0;
2239 sv_2mortal ((SV *)od);
2240
2241 while (AvFILLp (od) >= 0)
2242 {
2243 SV *cb = sv_2mortal (av_pop (od));
2244
2245 /* coro hv's (and only hv's at the moment) are supported as well */
2246 if (SvSTATEhv_p (aTHX_ cb))
2247 api_ready (aTHX_ cb);
2248 else
2249 {
2250 dSP; /* don't disturb outer sp */
2251 PUSHMARK (SP);
2252
2253 if (coro->status)
2254 {
2255 PUTBACK;
2256 coro_push_av (aTHX_ coro->status, G_ARRAY);
2257 SPAGAIN;
2258 }
2259
2260 PUTBACK;
2261 call_sv (cb, G_VOID | G_DISCARD);
2262 }
2263 }
2264}
2265
2266static void
2267coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2268{
2269 AV *av;
2270
2271 if (coro->status)
2272 {
2273 av = coro->status;
2274 av_clear (av);
2275 }
2276 else
2277 av = coro->status = newAV ();
2278
2279 /* items are actually not so common, so optimise for this case */
2280 if (items)
2281 {
2282 int i;
2283
2284 av_extend (av, items - 1);
2285
2286 for (i = 0; i < items; ++i)
2287 av_push (av, SvREFCNT_inc_NN (arg [i]));
2288 }
2289}
2290
2291static void
2292slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2293{
2294 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2295 api_ready (aTHX_ sv_manager);
2296
2297 frame->prepare = prepare_schedule;
2298 frame->check = slf_check_repeat;
2299
2300 /* as a minor optimisation, we could unwind all stacks here */
2301 /* but that puts extra pressure on pp_slf, and is not worth much */
2302 /*coro_unwind_stacks (aTHX);*/
2303}
2304
2305static void
2306slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2307{
2308 HV *coro_hv = (HV *)SvRV (coro_current);
2309
2310 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2311 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2312}
2313
2314static void
2315slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2316{
2317 HV *coro_hv;
2318 struct coro *coro;
2319
2320 if (items <= 0)
2321 croak ("Coro::cancel called without coro object,");
2322
2323 coro = SvSTATE (arg [0]);
2324 coro_hv = coro->hv;
2325
2326 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2327
2328 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2329 {
2330 /* coro currently busy cancelling something, so just notify it */
2331 coro->slf_frame.data = (void *)coro;
2332
2333 frame->prepare = prepare_nop;
2334 frame->check = slf_check_nop;
2335 }
2336 else if (coro_hv == (HV *)SvRV (coro_current))
2337 {
2338 /* cancelling the current coro is allowed, and equals terminate */
2339 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2340 }
2341 else
2342 {
2343 struct coro *self = SvSTATE_current;
2344
2345 if (!self)
2346 croak ("Coro::cancel called outside of thread content,");
2347
2348 /* otherwise we cancel directly, purely for speed reasons
2349 * unfortunately, this requires some magic trickery, as
2350 * somebody else could cancel us, so we have to fight the cancellation.
2351 * this is ugly, and hopefully fully worth the extra speed.
2352 * besides, I can't get the slow-but-safe version working...
2353 */
2354 slf_frame.data = 0;
2355 self->flags |= CF_NOCANCEL;
2356 coro_state_destroy (aTHX_ coro);
2357 self->flags &= ~CF_NOCANCEL;
2358
2359 if (slf_frame.data)
2360 {
2361 /* while we were busy we have been cancelled, so terminate */
2362 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2363 }
2364 else
2365 {
2366 frame->prepare = prepare_nop;
2367 frame->check = slf_check_nop;
2368 }
2369 }
2370}
2371
2372static int
2373slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2374{
2375 frame->prepare = 0;
2376 coro_unwind_stacks (aTHX);
2377
2378 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2379
2380 return 1;
2381}
2382
2383static int
2384safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2385{
2386 if (coro->cctx)
2387 croak ("coro inside C callback, unable to cancel at this time, caught");
2388
2389 if (coro->flags & CF_NEW)
2390 {
2391 coro_set_status (aTHX_ coro, arg, items);
2392 coro_state_destroy (aTHX_ coro);
2393 }
2394 else
2395 {
2396 if (!coro->slf_frame.prepare)
2397 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2398
2399 slf_destroy (aTHX_ coro);
2400
2401 coro_set_status (aTHX_ coro, arg, items);
2402 coro->slf_frame.prepare = prepare_nop;
2403 coro->slf_frame.check = slf_check_safe_cancel;
2404
2405 api_ready (aTHX_ (SV *)coro->hv);
2406 }
2407
2408 return 1;
2409}
2410
2411/*****************************************************************************/
2412/* async pool handler */
2413
2414static int
2415slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2416{
2417 HV *hv = (HV *)SvRV (coro_current);
2418 struct coro *coro = (struct coro *)frame->data;
2419
2420 if (!coro->invoke_cb)
2421 return 1; /* loop till we have invoke */
2422 else
2423 {
2424 hv_store (hv, "desc", sizeof ("desc") - 1,
2425 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2426
2427 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2428
2429 {
2430 dSP;
2431 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2432 PUTBACK;
2433 }
2434
2435 SvREFCNT_dec (GvAV (PL_defgv));
2436 GvAV (PL_defgv) = coro->invoke_av;
2437 coro->invoke_av = 0;
2438
2439 return 0;
2440 }
2441}
2442
2443static void
2444slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2445{
2446 HV *hv = (HV *)SvRV (coro_current);
2447 struct coro *coro = SvSTATE_hv ((SV *)hv);
2448
2449 if (ecb_expect_true (coro->saved_deffh))
2450 {
2451 /* subsequent iteration */
2452 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2453 coro->saved_deffh = 0;
2454
2455 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2456 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2457 {
2458 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2459 return;
2460 }
2461 else
2462 {
2463 av_clear (GvAV (PL_defgv));
2464 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2465
2466 if (ecb_expect_false (coro->swap_sv))
2467 {
2468 swap_svs_leave (coro);
2469 SvREFCNT_dec_NN (coro->swap_sv);
2470 coro->swap_sv = 0;
2471 }
2472
2473 coro->prio = 0;
2474
2475 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
2476 api_trace (aTHX_ coro_current, 0);
2477
2478 frame->prepare = prepare_schedule;
2479 av_push (av_async_pool, SvREFCNT_inc (hv));
2480 }
2481 }
2482 else
2483 {
2484 /* first iteration, simply fall through */
2485 frame->prepare = prepare_nop;
2486 }
2487
2488 frame->check = slf_check_pool_handler;
2489 frame->data = (void *)coro;
2490}
2491
1735/*****************************************************************************/ 2492/*****************************************************************************/
1736/* rouse callback */ 2493/* rouse callback */
1737 2494
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2495#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739 2496
1740static void 2497static void
1741coro_rouse_callback (pTHX_ CV *cv) 2498coro_rouse_callback (pTHX_ CV *cv)
1742{ 2499{
1743 dXSARGS; 2500 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG; 2501 SV *data = (SV *)S_GENSUB_ARG;
1745 2502
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2503 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 { 2504 {
1748 /* first call, set args */ 2505 /* first call, set args */
1749 int i; 2506 SV *coro = SvRV (data);
1750 AV *av = newAV (); 2507 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752 2508
1753 SvRV_set (data, (SV *)av); 2509 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756 2510
1757 /* better take a full copy of the arguments */ 2511 /* better take a full copy of the arguments */
1758 while (items--) 2512 while (items--)
1759 av_store (av, items, newSVsv (ST (items))); 2513 av_store (av, items, newSVsv (ST (items)));
2514
2515 api_ready (aTHX_ coro);
2516 SvREFCNT_dec (coro);
1760 } 2517 }
1761 2518
1762 XSRETURN_EMPTY; 2519 XSRETURN_EMPTY;
1763} 2520}
1764 2521
1765static int 2522static int
1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2523slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1767{ 2524{
1768 SV *data = (SV *)frame->data; 2525 SV *data = (SV *)frame->data;
1769 2526
1770 if (CORO_THROW) 2527 if (CORO_THROW)
1771 return 0; 2528 return 0;
1772 2529
1773 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2530 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1; 2531 return 1;
… …
1781 2538
1782 EXTEND (SP, AvFILLp (av) + 1); 2539 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i) 2540 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2541 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785 2542
1786 /* we have stolen the elements, so ste length to zero and free */ 2543 /* we have stolen the elements, so set length to zero and free */
1787 AvFILLp (av) = -1; 2544 AvFILLp (av) = -1;
1788 av_undef (av); 2545 av_undef (av);
1789 2546
1790 PUTBACK; 2547 PUTBACK;
1791 } 2548 }
… …
1810 cb = sv_2mortal (coro->rouse_cb); 2567 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0; 2568 coro->rouse_cb = 0;
1812 } 2569 }
1813 2570
1814 if (!SvROK (cb) 2571 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV 2572 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2573 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,"); 2574 croak ("Coro::rouse_wait called with illegal callback argument,");
1818 2575
1819 { 2576 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2577 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG; 2578 SV *data = (SV *)S_GENSUB_ARG;
1822 2579
1823 frame->data = (void *)data; 2580 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2581 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait; 2582 frame->check = slf_check_rouse_wait;
1826 } 2583 }
… …
1830coro_new_rouse_cb (pTHX) 2587coro_new_rouse_cb (pTHX)
1831{ 2588{
1832 HV *hv = (HV *)SvRV (coro_current); 2589 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv); 2590 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv); 2591 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2592 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1836 2593
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2594 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */ 2595 SvREFCNT_dec (data); /* magicext increases the refcount */
1839 2596
1840 SvREFCNT_dec (coro->rouse_cb); 2597 SvREFCNT_dec (coro->rouse_cb);
… …
1898 frame->prepare = prepare_schedule; 2655 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop; 2656 frame->check = slf_check_nop;
1900} 2657}
1901 2658
1902static void 2659static void
2660slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2661{
2662 struct coro *next = (struct coro *)slf_frame.data;
2663
2664 SvREFCNT_inc_NN (next->hv);
2665 prepare_schedule_to (aTHX_ ta, next);
2666}
2667
2668static void
2669slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2670{
2671 if (!items)
2672 croak ("Coro::schedule_to expects a coroutine argument, caught");
2673
2674 frame->data = (void *)SvSTATE (arg [0]);
2675 frame->prepare = slf_prepare_schedule_to;
2676 frame->check = slf_check_nop;
2677}
2678
2679static void
2680slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2681{
2682 api_ready (aTHX_ SvRV (coro_current));
2683
2684 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2685}
2686
2687static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2688slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{ 2689{
1905 frame->prepare = prepare_cede; 2690 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop; 2691 frame->check = slf_check_nop;
1907} 2692}
… …
1909static void 2694static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2695slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{ 2696{
1912 frame->prepare = prepare_cede_notself; 2697 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop; 2698 frame->check = slf_check_nop;
2699}
2700
2701/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2702static void
2703slf_destroy (pTHX_ struct coro *coro)
2704{
2705 struct CoroSLF frame = coro->slf_frame;
2706
2707 /*
2708 * The on_destroy below most likely is from an SLF call.
2709 * Since by definition the SLF call will not finish when we destroy
2710 * the coro, we will have to force-finish it here, otherwise
2711 * cleanup functions cannot call SLF functions.
2712 */
2713 coro->slf_frame.prepare = 0;
2714
2715 /* this callback is reserved for slf functions needing to do cleanup */
2716 if (frame.destroy && frame.prepare && !PL_dirty)
2717 frame.destroy (aTHX_ &frame);
1914} 2718}
1915 2719
1916/* 2720/*
1917 * these not obviously related functions are all rolled into one 2721 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same 2722 * function to increase chances that they all will call transfer with the same
… …
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2729 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926 2730
1927 /* set up the slf frame, unless it has already been set-up */ 2731 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */ 2732 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */ 2733 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare)) 2734 if (ecb_expect_true (!slf_frame.prepare))
1931 { 2735 {
1932 /* first iteration */ 2736 /* first iteration */
1933 dSP; 2737 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1; 2738 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */ 2739 int items = SP - arg; /* args without function object */
… …
1976 while (slf_frame.check (aTHX_ &slf_frame)); 2780 while (slf_frame.check (aTHX_ &slf_frame));
1977 2781
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2782 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979 2783
1980 /* exception handling */ 2784 /* exception handling */
1981 if (expect_false (CORO_THROW)) 2785 if (ecb_expect_false (CORO_THROW))
1982 { 2786 {
1983 SV *exception = sv_2mortal (CORO_THROW); 2787 SV *exception = sv_2mortal (CORO_THROW);
1984 2788
1985 CORO_THROW = 0; 2789 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception); 2790 sv_setsv (ERRSV, exception);
1987 croak (0); 2791 croak (0);
1988 } 2792 }
1989 2793
1990 /* return value handling - mostly like entersub */ 2794 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */ 2795 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR) 2796 if (GIMME_V == G_SCALAR
2797 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
1993 { 2798 {
1994 dSP; 2799 dSP;
1995 SV **bot = PL_stack_base + checkmark; 2800 SV **bot = PL_stack_base + checkmark;
1996 2801
1997 if (sp == bot) /* too few, push undef */ 2802 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef; 2803 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */ 2804 else /* too many, take last one */
2000 bot [1] = *sp; 2805 bot [1] = *sp;
2001 2806
2002 SP = bot + 1; 2807 SP = bot + 1;
2003 2808
2004 PUTBACK; 2809 PUTBACK;
… …
2037 if (PL_op->op_flags & OPf_STACKED) 2842 if (PL_op->op_flags & OPf_STACKED)
2038 { 2843 {
2039 if (items > slf_arga) 2844 if (items > slf_arga)
2040 { 2845 {
2041 slf_arga = items; 2846 slf_arga = items;
2042 free (slf_argv); 2847 Safefree (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *)); 2848 New (0, slf_argv, slf_arga, SV *);
2044 } 2849 }
2045 2850
2046 slf_argc = items; 2851 slf_argc = items;
2047 2852
2048 for (i = 0; i < items; ++i) 2853 for (i = 0; i < items; ++i)
… …
2050 } 2855 }
2051 else 2856 else
2052 slf_argc = 0; 2857 slf_argc = 0;
2053 2858
2054 PL_op->op_ppaddr = pp_slf; 2859 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2860 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2056 2861
2057 PL_op = (OP *)&slf_restore; 2862 PL_op = (OP *)&slf_restore;
2863}
2864
2865/*****************************************************************************/
2866/* dynamic wind */
2867
2868static void
2869on_enterleave_call (pTHX_ SV *cb)
2870{
2871 dSP;
2872
2873 PUSHSTACK;
2874
2875 PUSHMARK (SP);
2876 PUTBACK;
2877 call_sv (cb, G_VOID | G_DISCARD);
2878 SPAGAIN;
2879
2880 POPSTACK;
2881}
2882
2883static SV *
2884coro_avp_pop_and_free (pTHX_ AV **avp)
2885{
2886 AV *av = *avp;
2887 SV *res = av_pop (av);
2888
2889 if (AvFILLp (av) < 0)
2890 {
2891 *avp = 0;
2892 SvREFCNT_dec (av);
2893 }
2894
2895 return res;
2896}
2897
2898static void
2899coro_pop_on_enter (pTHX_ void *coro)
2900{
2901 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2902 SvREFCNT_dec (cb);
2903}
2904
2905static void
2906coro_pop_on_leave (pTHX_ void *coro)
2907{
2908 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2909 on_enterleave_call (aTHX_ sv_2mortal (cb));
2910}
2911
2912static void
2913enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2914{
2915 if (!hook)
2916 return;
2917
2918 if (!*avp)
2919 {
2920 *avp = newAV ();
2921 AvREAL_off (*avp);
2922 }
2923
2924 av_push (*avp, (SV *)hook);
2925 av_push (*avp, (SV *)arg);
2926}
2927
2928static void
2929enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2930{
2931 AV *av = *avp;
2932 int i;
2933
2934 if (!av)
2935 return;
2936
2937 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2938 if (AvARRAY (av)[i] == (SV *)hook)
2939 {
2940 if (execute)
2941 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2942
2943 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2944 av_pop (av);
2945 av_pop (av);
2946 break;
2947 }
2948
2949 if (AvFILLp (av) >= 0)
2950 {
2951 *avp = 0;
2952 SvREFCNT_dec_NN (av);
2953 }
2954}
2955
2956static void
2957api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2958{
2959 struct coro *coro = SvSTATE (coro_sv);
2960
2961 if (SvSTATE_current == coro)
2962 if (enter)
2963 enter (aTHX_ enter_arg);
2964
2965 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2966 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2967}
2968
2969static void
2970api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2971{
2972 struct coro *coro = SvSTATE (coro_sv);
2973
2974 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2975 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2976}
2977
2978static void
2979savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2980{
2981 struct coro *coro = SvSTATE_current;
2982
2983 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2984}
2985
2986static void
2987savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2988{
2989 struct coro *coro = SvSTATE_current;
2990
2991 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2992}
2993
2994static void
2995api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2996{
2997 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2998
2999 /* this ought to be much cheaper than malloc + a single destructor call */
3000 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
3001 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2058} 3002}
2059 3003
2060/*****************************************************************************/ 3004/*****************************************************************************/
2061/* PerlIO::cede */ 3005/* PerlIO::cede */
2062 3006
… …
2064{ 3008{
2065 PerlIOBuf base; 3009 PerlIOBuf base;
2066 NV next, every; 3010 NV next, every;
2067} PerlIOCede; 3011} PerlIOCede;
2068 3012
2069static IV 3013static IV ecb_cold
2070PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3014PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2071{ 3015{
2072 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3016 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2073 3017
2074 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3018 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2075 self->next = nvtime () + self->every; 3019 self->next = nvtime () + self->every;
2076 3020
2077 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3021 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2078} 3022}
2079 3023
2080static SV * 3024static SV * ecb_cold
2081PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3025PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2082{ 3026{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3027 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084 3028
2085 return newSVnv (self->every); 3029 return newSVnv (self->every);
… …
2136/* Coro::Semaphore & Coro::Signal */ 3080/* Coro::Semaphore & Coro::Signal */
2137 3081
2138static SV * 3082static SV *
2139coro_waitarray_new (pTHX_ int count) 3083coro_waitarray_new (pTHX_ int count)
2140{ 3084{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3085 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV (); 3086 AV *av = newAV ();
2143 SV **ary; 3087 SV **ary;
2144 3088
2145 /* unfortunately, building manually saves memory */ 3089 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *); 3090 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary; 3091 AvALLOC (av) = ary;
3092#if PERL_VERSION_ATLEAST (5,10,0)
2148 /*AvARRAY (av) = ary;*/ 3093 AvARRAY (av) = ary;
3094#else
2149 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 3095 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3096 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3097 SvPVX ((SV *)av) = (char *)ary;
3098#endif
2150 AvMAX (av) = 1; 3099 AvMAX (av) = 1;
2151 AvFILLp (av) = 0; 3100 AvFILLp (av) = 0;
2152 ary [0] = newSViv (count); 3101 ary [0] = newSViv (count);
2153 3102
2154 return newRV_noinc ((SV *)av); 3103 return newRV_noinc ((SV *)av);
… …
2174 AvARRAY (av)[0] = AvARRAY (av)[1]; 3123 AvARRAY (av)[0] = AvARRAY (av)[1];
2175 AvARRAY (av)[1] = count_sv; 3124 AvARRAY (av)[1] = count_sv;
2176 cb = av_shift (av); 3125 cb = av_shift (av);
2177 3126
2178 if (SvOBJECT (cb)) 3127 if (SvOBJECT (cb))
3128 {
2179 api_ready (aTHX_ cb); 3129 api_ready (aTHX_ cb);
2180 else 3130 --count;
2181 croak ("callbacks not yet supported"); 3131 }
3132 else if (SvTYPE (cb) == SVt_PVCV)
3133 {
3134 dSP;
3135 PUSHMARK (SP);
3136 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3137 PUTBACK;
3138 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3139 }
2182 3140
2183 SvREFCNT_dec (cb); 3141 SvREFCNT_dec_NN (cb);
2184
2185 --count;
2186 } 3142 }
2187} 3143}
2188 3144
2189static void 3145static void
2190coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3146coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2191{ 3147{
2192 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3148 /* call $sem->adjust (0) to possibly wake up some other waiters */
2193 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3149 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2194} 3150}
2195 3151
2196static int 3152static int
2197slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3153slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2198{ 3154{
2199 AV *av = (AV *)frame->data; 3155 AV *av = (AV *)frame->data;
2200 SV *count_sv = AvARRAY (av)[0]; 3156 SV *count_sv = AvARRAY (av)[0];
3157 SV *coro_hv = SvRV (coro_current);
3158
3159 frame->destroy = 0;
2201 3160
2202 /* if we are about to throw, don't actually acquire the lock, just throw */ 3161 /* if we are about to throw, don't actually acquire the lock, just throw */
2203 if (CORO_THROW) 3162 if (ecb_expect_false (CORO_THROW))
3163 {
3164 /* we still might be responsible for the semaphore, so wake up others */
3165 coro_semaphore_adjust (aTHX_ av, 0);
3166
2204 return 0; 3167 return 0;
3168 }
2205 else if (SvIVX (count_sv) > 0) 3169 else if (SvIVX (count_sv) > 0)
2206 { 3170 {
2207 SvSTATE_current->on_destroy = 0;
2208
2209 if (acquire) 3171 if (acquire)
2210 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3172 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2211 else 3173 else
2212 coro_semaphore_adjust (aTHX_ av, 0); 3174 coro_semaphore_adjust (aTHX_ av, 0);
2213 3175
… …
2217 { 3179 {
2218 int i; 3180 int i;
2219 /* if we were woken up but can't down, we look through the whole */ 3181 /* if we were woken up but can't down, we look through the whole */
2220 /* waiters list and only add us if we aren't in there already */ 3182 /* waiters list and only add us if we aren't in there already */
2221 /* this avoids some degenerate memory usage cases */ 3183 /* this avoids some degenerate memory usage cases */
2222 3184 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2223 for (i = 1; i <= AvFILLp (av); ++i)
2224 if (AvARRAY (av)[i] == SvRV (coro_current)) 3185 if (AvARRAY (av)[i] == coro_hv)
2225 return 1; 3186 return 1;
2226 3187
2227 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3188 av_push (av, SvREFCNT_inc (coro_hv));
2228 return 1; 3189 return 1;
2229 } 3190 }
2230} 3191}
2231 3192
2232static int 3193static int
… …
2255 { 3216 {
2256 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3217 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2257 3218
2258 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3219 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2259 frame->prepare = prepare_schedule; 3220 frame->prepare = prepare_schedule;
2260
2261 /* to avoid race conditions when a woken-up coro gets terminated */ 3221 /* to avoid race conditions when a woken-up coro gets terminated */
2262 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3222 /* we arrange for a temporary on_destroy that calls adjust (0) */
2263 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3223 frame->destroy = coro_semaphore_destroy;
2264 } 3224 }
2265} 3225}
2266 3226
2267static void 3227static void
2268slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3228slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2272} 3232}
2273 3233
2274static void 3234static void
2275slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3235slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2276{ 3236{
3237 if (items >= 2)
3238 {
3239 /* callback form */
3240 AV *av = (AV *)SvRV (arg [0]);
3241 SV *cb_cv = s_get_cv_croak (arg [1]);
3242
3243 av_push (av, SvREFCNT_inc_NN (cb_cv));
3244
3245 if (SvIVX (AvARRAY (av)[0]) > 0)
3246 coro_semaphore_adjust (aTHX_ av, 0);
3247
3248 frame->prepare = prepare_nop;
3249 frame->check = slf_check_nop;
3250 }
3251 else
3252 {
2277 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); 3253 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2278 frame->check = slf_check_semaphore_wait; 3254 frame->check = slf_check_semaphore_wait;
3255 }
2279} 3256}
2280 3257
2281/* signal */ 3258/* signal */
2282 3259
2283static void 3260static void
… …
2295 AvARRAY (av)[0] = AvARRAY (av)[1]; 3272 AvARRAY (av)[0] = AvARRAY (av)[1];
2296 AvARRAY (av)[1] = cb; 3273 AvARRAY (av)[1] = cb;
2297 3274
2298 cb = av_shift (av); 3275 cb = av_shift (av);
2299 3276
3277 if (SvTYPE (cb) == SVt_PVCV)
3278 {
3279 dSP;
3280 PUSHMARK (SP);
3281 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3282 PUTBACK;
3283 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3284 }
3285 else
3286 {
2300 api_ready (aTHX_ cb); 3287 api_ready (aTHX_ cb);
2301 sv_setiv (cb, 0); /* signal waiter */ 3288 sv_setiv (cb, 0); /* signal waiter */
3289 }
3290
2302 SvREFCNT_dec (cb); 3291 SvREFCNT_dec_NN (cb);
2303 3292
2304 --count; 3293 --count;
2305 } 3294 }
2306} 3295}
2307 3296
… …
2315static void 3304static void
2316slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3305slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2317{ 3306{
2318 AV *av = (AV *)SvRV (arg [0]); 3307 AV *av = (AV *)SvRV (arg [0]);
2319 3308
3309 if (items >= 2)
3310 {
3311 SV *cb_cv = s_get_cv_croak (arg [1]);
3312 av_push (av, SvREFCNT_inc_NN (cb_cv));
3313
2320 if (SvIVX (AvARRAY (av)[0])) 3314 if (SvIVX (AvARRAY (av)[0]))
3315 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3316
3317 frame->prepare = prepare_nop;
3318 frame->check = slf_check_nop;
3319 }
3320 else if (SvIVX (AvARRAY (av)[0]))
2321 { 3321 {
2322 SvIVX (AvARRAY (av)[0]) = 0; 3322 SvIVX (AvARRAY (av)[0]) = 0;
2323 frame->prepare = prepare_nop; 3323 frame->prepare = prepare_nop;
2324 frame->check = slf_check_nop; 3324 frame->check = slf_check_nop;
2325 } 3325 }
2326 else 3326 else
2327 { 3327 {
2328 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3328 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2329 3329
2330 av_push (av, waiter); 3330 av_push (av, waiter);
2331 3331
2332 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3332 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2333 frame->prepare = prepare_schedule; 3333 frame->prepare = prepare_schedule;
… …
2351 3351
2352static void 3352static void
2353coro_aio_callback (pTHX_ CV *cv) 3353coro_aio_callback (pTHX_ CV *cv)
2354{ 3354{
2355 dXSARGS; 3355 dXSARGS;
2356 AV *state = (AV *)GENSUB_ARG; 3356 AV *state = (AV *)S_GENSUB_ARG;
2357 SV *coro = av_pop (state); 3357 SV *coro = av_pop (state);
2358 SV *data_sv = newSV (sizeof (struct io_state)); 3358 SV *data_sv = newSV (sizeof (struct io_state));
2359 3359
2360 av_extend (state, items); 3360 av_extend (state, items - 1);
2361 3361
2362 sv_upgrade (data_sv, SVt_PV); 3362 sv_upgrade (data_sv, SVt_PV);
2363 SvCUR_set (data_sv, sizeof (struct io_state)); 3363 SvCUR_set (data_sv, sizeof (struct io_state));
2364 SvPOK_only (data_sv); 3364 SvPOK_only (data_sv);
2365 3365
… …
2381 } 3381 }
2382 3382
2383 av_push (state, data_sv); 3383 av_push (state, data_sv);
2384 3384
2385 api_ready (aTHX_ coro); 3385 api_ready (aTHX_ coro);
2386 SvREFCNT_dec (coro); 3386 SvREFCNT_dec_NN (coro);
2387 SvREFCNT_dec ((AV *)state); 3387 SvREFCNT_dec_NN ((AV *)state);
2388} 3388}
2389 3389
2390static int 3390static int
2391slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3391slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2392{ 3392{
… …
2397 /* it quickly returns */ 3397 /* it quickly returns */
2398 if (CORO_THROW) 3398 if (CORO_THROW)
2399 return 0; 3399 return 0;
2400 3400
2401 /* one element that is an RV? repeat! */ 3401 /* one element that is an RV? repeat! */
2402 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3402 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2403 return 1; 3403 return 1;
2404 3404
2405 /* restore status */ 3405 /* restore status */
2406 { 3406 {
2407 SV *data_sv = av_pop (state); 3407 SV *data_sv = av_pop (state);
… …
2410 errno = data->errorno; 3410 errno = data->errorno;
2411 PL_laststype = data->laststype; 3411 PL_laststype = data->laststype;
2412 PL_laststatval = data->laststatval; 3412 PL_laststatval = data->laststatval;
2413 PL_statcache = data->statcache; 3413 PL_statcache = data->statcache;
2414 3414
2415 SvREFCNT_dec (data_sv); 3415 SvREFCNT_dec_NN (data_sv);
2416 } 3416 }
2417 3417
2418 /* push result values */ 3418 /* push result values */
2419 { 3419 {
2420 dSP; 3420 dSP;
… …
2446 dSP; 3446 dSP;
2447 3447
2448 static SV *prio_cv; 3448 static SV *prio_cv;
2449 static SV *prio_sv; 3449 static SV *prio_sv;
2450 3450
2451 if (expect_false (!prio_cv)) 3451 if (ecb_expect_false (!prio_cv))
2452 { 3452 {
2453 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3453 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2454 prio_sv = newSViv (0); 3454 prio_sv = newSViv (0);
2455 } 3455 }
2456 3456
… …
2475 3475
2476 for (i = 0; i < items; ++i) 3476 for (i = 0; i < items; ++i)
2477 PUSHs (arg [i]); 3477 PUSHs (arg [i]);
2478 3478
2479 /* now push the callback closure */ 3479 /* now push the callback closure */
2480 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3480 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2481 3481
2482 /* now call the AIO function - we assume our request is uncancelable */ 3482 /* now call the AIO function - we assume our request is uncancelable */
2483 PUTBACK; 3483 PUTBACK;
2484 call_sv ((SV *)req, G_VOID | G_DISCARD); 3484 call_sv ((SV *)req, G_VOID | G_DISCARD);
2485 } 3485 }
2486 3486
2487 /* now that the requets is going, we loop toll we have a result */ 3487 /* now that the request is going, we loop till we have a result */
2488 frame->data = (void *)state; 3488 frame->data = (void *)state;
2489 frame->prepare = prepare_schedule; 3489 frame->prepare = prepare_schedule;
2490 frame->check = slf_check_aio_req; 3490 frame->check = slf_check_aio_req;
2491} 3491}
2492 3492
… …
2500 XSRETURN_EMPTY; 3500 XSRETURN_EMPTY;
2501} 3501}
2502 3502
2503/*****************************************************************************/ 3503/*****************************************************************************/
2504 3504
3505#if CORO_CLONE
3506# include "clone.c"
3507#endif
3508
3509/*****************************************************************************/
3510
3511static SV *
3512coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3513{
3514 SV *coro_sv;
3515 struct coro *coro;
3516 MAGIC *mg;
3517 HV *hv;
3518 SV *cb;
3519 int i;
3520
3521 if (argc > 0)
3522 {
3523 cb = s_get_cv_croak (argv [0]);
3524
3525 if (!is_coro)
3526 {
3527 if (CvISXSUB (cb))
3528 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3529
3530 if (!CvROOT (cb))
3531 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3532 }
3533 }
3534
3535 Newz (0, coro, 1, struct coro);
3536 coro->args = newAV ();
3537 coro->flags = CF_NEW;
3538
3539 if (coro_first) coro_first->prev = coro;
3540 coro->next = coro_first;
3541 coro_first = coro;
3542
3543 coro->hv = hv = newHV ();
3544 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3545 mg->mg_flags |= MGf_DUP;
3546 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3547
3548 if (argc > 0)
3549 {
3550 av_extend (coro->args, argc + is_coro - 1);
3551
3552 if (is_coro)
3553 {
3554 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3555 cb = (SV *)cv_coro_run;
3556 }
3557
3558 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3559
3560 for (i = 1; i < argc; i++)
3561 av_push (coro->args, newSVsv (argv [i]));
3562 }
3563
3564 return coro_sv;
3565}
3566
3567#ifndef __cplusplus
3568ecb_cold XS(boot_Coro__State);
3569#endif
3570
3571#if CORO_JIT
3572
3573static void ecb_noinline ecb_cold
3574pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3575{
3576 dSP;
3577 AV *av = newAV ();
3578
3579 av_store (av, 3, newSVuv (d));
3580 av_store (av, 2, newSVuv (c));
3581 av_store (av, 1, newSVuv (b));
3582 av_store (av, 0, newSVuv (a));
3583
3584 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3585
3586 PUTBACK;
3587}
3588
3589static void ecb_noinline ecb_cold
3590jit_init (pTHX)
3591{
3592 dSP;
3593 SV *load, *save;
3594 char *map_base;
3595 char *load_ptr, *save_ptr;
3596 STRLEN load_len, save_len, map_len;
3597 int count;
3598
3599 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3600
3601 PUSHMARK (SP);
3602 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3603 #include "state.h"
3604 count = call_pv ("Coro::State::_jit", G_ARRAY);
3605 SPAGAIN;
3606
3607 save = POPs; save_ptr = SvPVbyte (save, save_len);
3608 load = POPs; load_ptr = SvPVbyte (load, load_len);
3609
3610 map_len = load_len + save_len + 16;
3611
3612 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3613
3614 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3615
3616 load_perl_slots = (load_save_perl_slots_type)map_base;
3617 memcpy (map_base, load_ptr, load_len);
3618
3619 map_base += (load_len + 15) & ~15;
3620
3621 save_perl_slots = (load_save_perl_slots_type)map_base;
3622 memcpy (map_base, save_ptr, save_len);
3623
3624 /* we are good citizens and try to make the page read-only, so the evil evil */
3625 /* hackers might have it a bit more difficult */
3626 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3627
3628 PUTBACK;
3629 eval_pv ("undef &Coro::State::_jit", 1);
3630}
3631
3632#endif
3633
2505MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3634MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2506 3635
2507PROTOTYPES: DISABLE 3636PROTOTYPES: DISABLE
2508 3637
2509BOOT: 3638BOOT:
2510{ 3639{
3640#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3641#include "state.h"
2511#ifdef USE_ITHREADS 3642#ifdef USE_ITHREADS
2512# if CORO_PTHREAD 3643# if CORO_PTHREAD
2513 coro_thx = PERL_GET_CONTEXT; 3644 coro_thx = PERL_GET_CONTEXT;
2514# endif 3645# endif
2515#endif 3646#endif
2516 BOOT_PAGESIZE; 3647 /* perl defines these to check for existance first, but why it doesn't */
3648 /* just create them one at init time is not clear to me, except for */
3649 /* programs trying to delete them, but... */
3650 /* anyway, we declare this as invalid and make sure they are initialised here */
3651 DEFSV;
3652 ERRSV;
3653
3654 cctx_current = cctx_new_empty ();
2517 3655
2518 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3656 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2519 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3657 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2520 3658
2521 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3659 {
2522 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3660 /*
2523 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3661 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3662 * by coro_sig_vtbl in hash values.
3663 */
3664 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3665
3666 /* this only works if perl doesn't have a vtbl for %SIG */
3667 assert (!mg->mg_virtual);
3668
3669 /*
3670 * The irony is that the perl API itself asserts that mg_virtual
3671 * must be non-const, yet perl5porters insisted on marking their
3672 * vtbls as read-only, just to thwart perl modules from patching
3673 * them.
3674 */
3675 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3676 mg->mg_flags |= MGf_COPY;
3677
3678 coro_sigelem_vtbl = PL_vtbl_sigelem;
3679 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3680 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3681 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3682 }
2524 3683
2525 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2526 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3684 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2527 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3685 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2528 3686
2529 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3687 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2530 3688
… …
2541 3699
2542 { 3700 {
2543 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3701 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2544 3702
2545 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3703 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2546 hv_store_ent (PL_custom_op_names, slf, 3704 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2547 newSVpv ("coro_slf", 0), 0);
2548 3705
2549 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3706 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2550 hv_store_ent (PL_custom_op_descs, slf, 3707 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2551 newSVpv ("coro schedule like function", 0), 0);
2552 } 3708 }
2553 3709
2554 coroapi.ver = CORO_API_VERSION; 3710 coroapi.ver = CORO_API_VERSION;
2555 coroapi.rev = CORO_API_REVISION; 3711 coroapi.rev = CORO_API_REVISION;
2556 3712
… …
2561 coroapi.prepare_nop = prepare_nop; 3717 coroapi.prepare_nop = prepare_nop;
2562 coroapi.prepare_schedule = prepare_schedule; 3718 coroapi.prepare_schedule = prepare_schedule;
2563 coroapi.prepare_cede = prepare_cede; 3719 coroapi.prepare_cede = prepare_cede;
2564 coroapi.prepare_cede_notself = prepare_cede_notself; 3720 coroapi.prepare_cede_notself = prepare_cede_notself;
2565 3721
2566 { 3722 time_init (aTHX);
2567 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2568 3723
2569 if (!svp) croak ("Time::HiRes is required");
2570 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2571
2572 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2573 }
2574
2575 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3724 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3725#if CORO_JIT
3726 PUTBACK;
3727 jit_init (aTHX);
3728 SPAGAIN;
3729#endif
2576} 3730}
2577 3731
2578SV * 3732SV *
2579new (char *klass, ...) 3733new (SV *klass, ...)
3734 ALIAS:
3735 Coro::new = 1
2580 CODE: 3736 CODE:
2581{ 3737 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2582 struct coro *coro; 3738 OUTPUT:
2583 MAGIC *mg;
2584 HV *hv;
2585 int i;
2586
2587 Newz (0, coro, 1, struct coro);
2588 coro->args = newAV ();
2589 coro->flags = CF_NEW;
2590
2591 if (coro_first) coro_first->prev = coro;
2592 coro->next = coro_first;
2593 coro_first = coro;
2594
2595 coro->hv = hv = newHV ();
2596 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2597 mg->mg_flags |= MGf_DUP;
2598 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2599
2600 av_extend (coro->args, items - 1);
2601 for (i = 1; i < items; i++)
2602 av_push (coro->args, newSVsv (ST (i)));
2603}
2604 OUTPUT:
2605 RETVAL 3739 RETVAL
2606 3740
2607void 3741void
2608transfer (...) 3742transfer (...)
2609 PROTOTYPE: $$ 3743 PROTOTYPE: $$
2610 CODE: 3744 CODE:
2611 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3745 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2612 3746
2613bool 3747SV *
2614_destroy (SV *coro_sv) 3748clone (Coro::State coro)
2615 CODE: 3749 CODE:
2616 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3750{
3751#if CORO_CLONE
3752 struct coro *ncoro = coro_clone (aTHX_ coro);
3753 MAGIC *mg;
3754 /* TODO: too much duplication */
3755 ncoro->hv = newHV ();
3756 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3757 mg->mg_flags |= MGf_DUP;
3758 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3759#else
3760 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3761#endif
3762}
2617 OUTPUT: 3763 OUTPUT:
2618 RETVAL 3764 RETVAL
2619
2620void
2621_exit (int code)
2622 PROTOTYPE: $
2623 CODE:
2624 _exit (code);
2625 3765
2626int 3766int
2627cctx_stacksize (int new_stacksize = 0) 3767cctx_stacksize (int new_stacksize = 0)
2628 PROTOTYPE: ;$ 3768 PROTOTYPE: ;$
2629 CODE: 3769 CODE:
… …
2665void 3805void
2666list () 3806list ()
2667 PROTOTYPE: 3807 PROTOTYPE:
2668 PPCODE: 3808 PPCODE:
2669{ 3809{
2670 struct coro *coro; 3810 struct coro *coro;
2671 for (coro = coro_first; coro; coro = coro->next) 3811 for (coro = coro_first; coro; coro = coro->next)
2672 if (coro->hv) 3812 if (coro->hv)
2673 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3813 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2674} 3814}
2675 3815
… …
2679 eval = 1 3819 eval = 1
2680 CODE: 3820 CODE:
2681{ 3821{
2682 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3822 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2683 { 3823 {
2684 struct coro temp; 3824 struct coro *current = SvSTATE_current;
3825 struct CoroSLF slf_save;
2685 3826
2686 if (!(coro->flags & CF_RUNNING)) 3827 if (current != coro)
2687 { 3828 {
2688 PUTBACK; 3829 PUTBACK;
2689 save_perl (aTHX_ &temp); 3830 save_perl (aTHX_ current);
2690 load_perl (aTHX_ coro); 3831 load_perl (aTHX_ coro);
3832 /* the coro is most likely in an active SLF call.
3833 * while not strictly required (the code we execute is
3834 * not allowed to call any SLF functions), it's cleaner
3835 * to reinitialise the slf_frame and restore it later.
3836 * This might one day allow us to actually do SLF calls
3837 * from code executed here.
3838 */
3839 slf_save = slf_frame;
3840 slf_frame.prepare = 0;
3841 SPAGAIN;
2691 } 3842 }
2692 3843
2693 {
2694 dSP;
2695 ENTER;
2696 SAVETMPS;
2697 PUTBACK;
2698 PUSHSTACK; 3844 PUSHSTACK;
3845
2699 PUSHMARK (SP); 3846 PUSHMARK (SP);
3847 PUTBACK;
2700 3848
2701 if (ix) 3849 if (ix)
2702 eval_sv (coderef, 0); 3850 eval_sv (coderef, 0);
2703 else 3851 else
2704 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3852 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2705 3853
2706 POPSTACK; 3854 POPSTACK;
2707 SPAGAIN; 3855 SPAGAIN;
2708 FREETMPS;
2709 LEAVE;
2710 PUTBACK;
2711 }
2712 3856
2713 if (!(coro->flags & CF_RUNNING)) 3857 if (current != coro)
2714 { 3858 {
3859 PUTBACK;
3860 slf_frame = slf_save;
2715 save_perl (aTHX_ coro); 3861 save_perl (aTHX_ coro);
2716 load_perl (aTHX_ &temp); 3862 load_perl (aTHX_ current);
2717 SPAGAIN; 3863 SPAGAIN;
2718 } 3864 }
2719 } 3865 }
2720} 3866}
2721 3867
… …
2724 PROTOTYPE: $ 3870 PROTOTYPE: $
2725 ALIAS: 3871 ALIAS:
2726 is_ready = CF_READY 3872 is_ready = CF_READY
2727 is_running = CF_RUNNING 3873 is_running = CF_RUNNING
2728 is_new = CF_NEW 3874 is_new = CF_NEW
2729 is_destroyed = CF_DESTROYED 3875 is_destroyed = CF_ZOMBIE
3876 is_zombie = CF_ZOMBIE
3877 is_suspended = CF_SUSPENDED
2730 CODE: 3878 CODE:
2731 RETVAL = boolSV (coro->flags & ix); 3879 RETVAL = boolSV (coro->flags & ix);
2732 OUTPUT: 3880 OUTPUT:
2733 RETVAL 3881 RETVAL
2734 3882
2735void 3883void
2736throw (Coro::State self, SV *throw = &PL_sv_undef) 3884throw (SV *self, SV *exception = &PL_sv_undef)
2737 PROTOTYPE: $;$ 3885 PROTOTYPE: $;$
2738 CODE: 3886 CODE:
2739{ 3887{
3888 struct coro *coro = SvSTATE (self);
2740 struct coro *current = SvSTATE_current; 3889 struct coro *current = SvSTATE_current;
2741 SV **throwp = self == current ? &CORO_THROW : &self->except; 3890 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2742 SvREFCNT_dec (*throwp); 3891 SvREFCNT_dec (*exceptionp);
2743 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3892 SvGETMAGIC (exception);
3893 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3894
3895 api_ready (aTHX_ self);
2744} 3896}
2745 3897
2746void 3898void
2747api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3899api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2748 PROTOTYPE: $;$ 3900 PROTOTYPE: $;$
… …
2750 3902
2751SV * 3903SV *
2752has_cctx (Coro::State coro) 3904has_cctx (Coro::State coro)
2753 PROTOTYPE: $ 3905 PROTOTYPE: $
2754 CODE: 3906 CODE:
2755 RETVAL = boolSV (!!coro->cctx); 3907 /* maybe manage the running flag differently */
3908 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2756 OUTPUT: 3909 OUTPUT:
2757 RETVAL 3910 RETVAL
2758 3911
2759int 3912int
2760is_traced (Coro::State coro) 3913is_traced (Coro::State coro)
… …
2780 3933
2781void 3934void
2782force_cctx () 3935force_cctx ()
2783 PROTOTYPE: 3936 PROTOTYPE:
2784 CODE: 3937 CODE:
2785 SvSTATE_current->cctx->idle_sp = 0; 3938 cctx_current->idle_sp = 0;
2786 3939
2787void 3940void
2788swap_defsv (Coro::State self) 3941swap_defsv (Coro::State self)
2789 PROTOTYPE: $ 3942 PROTOTYPE: $
2790 ALIAS: 3943 ALIAS:
… …
2798 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3951 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2799 3952
2800 SV *tmp = *src; *src = *dst; *dst = tmp; 3953 SV *tmp = *src; *src = *dst; *dst = tmp;
2801 } 3954 }
2802 3955
3956void
3957cancel (Coro::State self)
3958 CODE:
3959 coro_state_destroy (aTHX_ self);
3960
3961SV *
3962enable_times (int enabled = enable_times)
3963 CODE:
3964{
3965 RETVAL = boolSV (enable_times);
3966
3967 if (enabled != enable_times)
3968 {
3969 enable_times = enabled;
3970
3971 coro_times_update ();
3972 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3973 }
3974}
3975 OUTPUT:
3976 RETVAL
3977
3978void
3979times (Coro::State self)
3980 PPCODE:
3981{
3982 struct coro *current = SvSTATE (coro_current);
3983
3984 if (ecb_expect_false (current == self))
3985 {
3986 coro_times_update ();
3987 coro_times_add (SvSTATE (coro_current));
3988 }
3989
3990 EXTEND (SP, 2);
3991 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3992 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3993
3994 if (ecb_expect_false (current == self))
3995 coro_times_sub (SvSTATE (coro_current));
3996}
3997
3998void
3999swap_sv (Coro::State coro, SV *sva, SV *svb)
4000 CODE:
4001{
4002 struct coro *current = SvSTATE_current;
4003 AV *swap_sv;
4004 int i;
4005
4006 sva = SvRV (sva);
4007 svb = SvRV (svb);
4008
4009 if (current == coro)
4010 SWAP_SVS_LEAVE (current);
4011
4012 if (!coro->swap_sv)
4013 coro->swap_sv = newAV ();
4014
4015 swap_sv = coro->swap_sv;
4016
4017 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4018 {
4019 SV *a = AvARRAY (swap_sv)[i ];
4020 SV *b = AvARRAY (swap_sv)[i + 1];
4021
4022 if (a == sva && b == svb)
4023 {
4024 SvREFCNT_dec_NN (a);
4025 SvREFCNT_dec_NN (b);
4026
4027 for (; i <= AvFILLp (swap_sv) - 2; i++)
4028 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4029
4030 AvFILLp (swap_sv) -= 2;
4031
4032 goto removed;
4033 }
4034 }
4035
4036 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4037 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4038
4039 removed:
4040
4041 if (current == coro)
4042 SWAP_SVS_ENTER (current);
4043}
4044
2803 4045
2804MODULE = Coro::State PACKAGE = Coro 4046MODULE = Coro::State PACKAGE = Coro
2805 4047
2806BOOT: 4048BOOT:
2807{ 4049{
2808 int i; 4050 if (SVt_LAST > 32)
4051 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2809 4052
2810 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2811 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4053 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2812 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4054 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2813 4055 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2814 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 4056 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2815 SvREADONLY_on (coro_current); 4057 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4058 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4059 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4060 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
4061
4062 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
4063 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
4064 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
4065 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2816 4066
2817 coro_stash = gv_stashpv ("Coro", TRUE); 4067 coro_stash = gv_stashpv ("Coro", TRUE);
2818 4068
2819 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4069 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2820 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4070 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2821 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4071 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2822 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4072 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2823 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4073 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2824 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4074 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2825
2826 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2827 coro_ready[i] = newAV ();
2828 4075
2829 { 4076 {
2830 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4077 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2831 4078
2832 coroapi.schedule = api_schedule; 4079 coroapi.schedule = api_schedule;
4080 coroapi.schedule_to = api_schedule_to;
2833 coroapi.cede = api_cede; 4081 coroapi.cede = api_cede;
2834 coroapi.cede_notself = api_cede_notself; 4082 coroapi.cede_notself = api_cede_notself;
2835 coroapi.ready = api_ready; 4083 coroapi.ready = api_ready;
2836 coroapi.is_ready = api_is_ready; 4084 coroapi.is_ready = api_is_ready;
2837 coroapi.nready = coro_nready; 4085 coroapi.nready = coro_nready;
2838 coroapi.current = coro_current; 4086 coroapi.current = coro_current;
2839 4087
4088 coroapi.enterleave_hook = api_enterleave_hook;
4089 coroapi.enterleave_unhook = api_enterleave_unhook;
4090 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4091
2840 /*GCoroAPI = &coroapi;*/ 4092 /*GCoroAPI = &coroapi;*/
2841 sv_setiv (sv, (IV)&coroapi); 4093 sv_setiv (sv, (IV)&coroapi);
2842 SvREADONLY_on (sv); 4094 SvREADONLY_on (sv);
2843 } 4095 }
2844} 4096}
2845 4097
4098SV *
4099async (...)
4100 PROTOTYPE: &@
4101 CODE:
4102 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4103 api_ready (aTHX_ RETVAL);
4104 OUTPUT:
4105 RETVAL
4106
4107void
4108_destroy (Coro::State coro)
4109 CODE:
4110 /* used by the manager thread */
4111 coro_state_destroy (aTHX_ coro);
4112
4113void
4114on_destroy (Coro::State coro, SV *cb)
4115 CODE:
4116 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4117
4118void
4119join (...)
4120 CODE:
4121 CORO_EXECUTE_SLF_XS (slf_init_join);
4122
4123void
4124terminate (...)
4125 CODE:
4126 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4127
4128void
4129cancel (...)
4130 CODE:
4131 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4132
4133int
4134safe_cancel (Coro::State self, ...)
4135 C_ARGS: aTHX_ self, &ST (1), items - 1
4136
2846void 4137void
2847schedule (...) 4138schedule (...)
2848 CODE: 4139 CODE:
2849 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4140 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2850 4141
2851void 4142void
4143schedule_to (...)
4144 CODE:
4145 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4146
4147void
4148cede_to (...)
4149 CODE:
4150 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4151
4152void
2852cede (...) 4153cede (...)
2853 CODE: 4154 CODE:
2854 CORO_EXECUTE_SLF_XS (slf_init_cede); 4155 CORO_EXECUTE_SLF_XS (slf_init_cede);
2855 4156
2856void 4157void
… …
2860 4161
2861void 4162void
2862_set_current (SV *current) 4163_set_current (SV *current)
2863 PROTOTYPE: $ 4164 PROTOTYPE: $
2864 CODE: 4165 CODE:
2865 SvREFCNT_dec (SvRV (coro_current)); 4166 SvREFCNT_dec_NN (SvRV (coro_current));
2866 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4167 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2867 4168
2868void 4169void
2869_set_readyhook (SV *hook) 4170_set_readyhook (SV *hook)
2870 PROTOTYPE: $ 4171 PROTOTYPE: $
2871 CODE: 4172 CODE:
2872 SvREFCNT_dec (coro_readyhook); 4173 SvREFCNT_dec (coro_readyhook);
4174 SvGETMAGIC (hook);
4175 if (SvOK (hook))
4176 {
2873 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4177 coro_readyhook = newSVsv (hook);
4178 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4179 }
4180 else
4181 {
4182 coro_readyhook = 0;
4183 CORO_READYHOOK = 0;
4184 }
2874 4185
2875int 4186int
2876prio (Coro::State coro, int newprio = 0) 4187prio (Coro::State coro, int newprio = 0)
2877 PROTOTYPE: $;$ 4188 PROTOTYPE: $;$
2878 ALIAS: 4189 ALIAS:
… …
2884 if (items > 1) 4195 if (items > 1)
2885 { 4196 {
2886 if (ix) 4197 if (ix)
2887 newprio = coro->prio - newprio; 4198 newprio = coro->prio - newprio;
2888 4199
2889 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4200 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2890 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4201 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2891 4202
2892 coro->prio = newprio; 4203 coro->prio = newprio;
2893 } 4204 }
2894} 4205}
2895 OUTPUT: 4206 OUTPUT:
… …
2909 CODE: 4220 CODE:
2910 RETVAL = coro_nready; 4221 RETVAL = coro_nready;
2911 OUTPUT: 4222 OUTPUT:
2912 RETVAL 4223 RETVAL
2913 4224
2914# for async_pool speedup
2915void 4225void
2916_pool_1 (SV *cb) 4226suspend (Coro::State self)
4227 PROTOTYPE: $
2917 CODE: 4228 CODE:
2918{ 4229 self->flags |= CF_SUSPENDED;
2919 HV *hv = (HV *)SvRV (coro_current);
2920 struct coro *coro = SvSTATE_hv ((SV *)hv);
2921 AV *defav = GvAV (PL_defgv);
2922 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2923 AV *invoke_av;
2924 int i, len;
2925 4230
2926 if (!invoke) 4231void
4232resume (Coro::State self)
4233 PROTOTYPE: $
4234 CODE:
4235 self->flags &= ~CF_SUSPENDED;
4236
4237void
4238_pool_handler (...)
4239 CODE:
4240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4241
4242void
4243async_pool (SV *cv, ...)
4244 PROTOTYPE: &@
4245 PPCODE:
4246{
4247 HV *hv = (HV *)av_pop (av_async_pool);
4248 AV *av = newAV ();
4249 SV *cb = ST (0);
4250 int i;
4251
4252 av_extend (av, items - 2);
4253 for (i = 1; i < items; ++i)
4254 av_push (av, SvREFCNT_inc_NN (ST (i)));
4255
4256 if ((SV *)hv == &PL_sv_undef)
2927 { 4257 {
2928 SV *old = PL_diehook; 4258 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2929 PL_diehook = 0; 4259 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2930 SvREFCNT_dec (old); 4260 SvREFCNT_dec_NN (sv);
2931 croak ("\3async_pool terminate\2\n");
2932 } 4261 }
2933 4262
2934 SvREFCNT_dec (coro->saved_deffh);
2935 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2936
2937 hv_store (hv, "desc", sizeof ("desc") - 1,
2938 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2939
2940 invoke_av = (AV *)SvRV (invoke);
2941 len = av_len (invoke_av);
2942
2943 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2944
2945 if (len > 0)
2946 { 4263 {
2947 av_fill (defav, len - 1); 4264 struct coro *coro = SvSTATE_hv (hv);
2948 for (i = 0; i < len; ++i) 4265
2949 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4266 assert (!coro->invoke_cb);
4267 assert (!coro->invoke_av);
4268 coro->invoke_cb = SvREFCNT_inc (cb);
4269 coro->invoke_av = av;
2950 } 4270 }
2951}
2952 4271
2953void 4272 api_ready (aTHX_ (SV *)hv);
2954_pool_2 (SV *cb)
2955 CODE:
2956{
2957 HV *hv = (HV *)SvRV (coro_current);
2958 struct coro *coro = SvSTATE_hv ((SV *)hv);
2959 4273
2960 sv_setsv (cb, &PL_sv_undef); 4274 if (GIMME_V != G_VOID)
2961 4275 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
2962 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4276 else
2963 coro->saved_deffh = 0;
2964
2965 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2966 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2967 {
2968 SV *old = PL_diehook;
2969 PL_diehook = 0;
2970 SvREFCNT_dec (old); 4277 SvREFCNT_dec_NN (hv);
2971 croak ("\3async_pool terminate\2\n");
2972 }
2973
2974 av_clear (GvAV (PL_defgv));
2975 hv_store (hv, "desc", sizeof ("desc") - 1,
2976 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2977
2978 coro->prio = 0;
2979
2980 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2981 api_trace (aTHX_ coro_current, 0);
2982
2983 av_push (av_async_pool, newSVsv (coro_current));
2984} 4278}
2985 4279
2986SV * 4280SV *
2987rouse_cb () 4281rouse_cb ()
2988 PROTOTYPE: 4282 PROTOTYPE:
… …
2990 RETVAL = coro_new_rouse_cb (aTHX); 4284 RETVAL = coro_new_rouse_cb (aTHX);
2991 OUTPUT: 4285 OUTPUT:
2992 RETVAL 4286 RETVAL
2993 4287
2994void 4288void
2995rouse_wait (SV *cb = 0) 4289rouse_wait (...)
2996 PROTOTYPE: ;$ 4290 PROTOTYPE: ;$
2997 PPCODE: 4291 PPCODE:
2998 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4292 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2999 4293
4294void
4295on_enter (SV *block)
4296 ALIAS:
4297 on_leave = 1
4298 PROTOTYPE: &
4299 CODE:
4300{
4301 struct coro *coro = SvSTATE_current;
4302 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4303
4304 block = s_get_cv_croak (block);
4305
4306 if (!*avp)
4307 *avp = newAV ();
4308
4309 av_push (*avp, SvREFCNT_inc (block));
4310
4311 if (!ix)
4312 on_enterleave_call (aTHX_ block);
4313
4314 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4315 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4316 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4317}
4318
3000 4319
3001MODULE = Coro::State PACKAGE = PerlIO::cede 4320MODULE = Coro::State PACKAGE = PerlIO::cede
3002 4321
3003BOOT: 4322BOOT:
3004 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3007MODULE = Coro::State PACKAGE = Coro::Semaphore 4326MODULE = Coro::State PACKAGE = Coro::Semaphore
3008 4327
3009SV * 4328SV *
3010new (SV *klass, SV *count = 0) 4329new (SV *klass, SV *count = 0)
3011 CODE: 4330 CODE:
4331{
4332 int semcnt = 1;
4333
4334 if (count)
4335 {
4336 SvGETMAGIC (count);
4337
4338 if (SvOK (count))
4339 semcnt = SvIV (count);
4340 }
4341
3012 RETVAL = sv_bless ( 4342 RETVAL = sv_bless (
3013 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4343 coro_waitarray_new (aTHX_ semcnt),
3014 GvSTASH (CvGV (cv)) 4344 GvSTASH (CvGV (cv))
3015 ); 4345 );
4346}
3016 OUTPUT: 4347 OUTPUT:
3017 RETVAL 4348 RETVAL
3018 4349
3019# helper for Coro::Channel 4350# helper for Coro::Channel and others
3020SV * 4351SV *
3021_alloc (int count) 4352_alloc (int count)
3022 CODE: 4353 CODE:
3023 RETVAL = coro_waitarray_new (aTHX_ count); 4354 RETVAL = coro_waitarray_new (aTHX_ count);
3024 OUTPUT: 4355 OUTPUT:
… …
3030 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4361 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3031 OUTPUT: 4362 OUTPUT:
3032 RETVAL 4363 RETVAL
3033 4364
3034void 4365void
3035up (SV *self, int adjust = 1) 4366up (SV *self)
3036 ALIAS:
3037 adjust = 1
3038 CODE: 4367 CODE:
3039 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4368 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
3040 4369
3041void 4370void
3042down (SV *self) 4371adjust (SV *self, int adjust)
4372 CODE:
4373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
4374
4375void
4376down (...)
3043 CODE: 4377 CODE:
3044 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4378 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3045 4379
3046void 4380void
3047wait (SV *self) 4381wait (...)
3048 CODE: 4382 CODE:
3049 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); 4383 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3050 4384
3051void 4385void
3052try (SV *self) 4386try (SV *self)
… …
3066 XSRETURN_NO; 4400 XSRETURN_NO;
3067} 4401}
3068 4402
3069void 4403void
3070waiters (SV *self) 4404waiters (SV *self)
3071 PPCODE: 4405 PPCODE:
3072{ 4406{
3073 AV *av = (AV *)SvRV (self); 4407 AV *av = (AV *)SvRV (self);
3074 int wcount = AvFILLp (av) + 1 - 1; 4408 int wcount = AvFILLp (av) + 1 - 1;
3075 4409
3076 if (GIMME_V == G_SCALAR) 4410 if (GIMME_V == G_SCALAR)
… …
3082 for (i = 1; i <= wcount; ++i) 4416 for (i = 1; i <= wcount; ++i)
3083 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3084 } 4418 }
3085} 4419}
3086 4420
4421MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4422
4423void
4424_may_delete (SV *sem, int count, unsigned int extra_refs)
4425 PPCODE:
4426{
4427 AV *av = (AV *)SvRV (sem);
4428
4429 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4430 && AvFILLp (av) == 0 /* no waiters, just count */
4431 && SvIV (AvARRAY (av)[0]) == count)
4432 XSRETURN_YES;
4433
4434 XSRETURN_NO;
4435}
4436
3087MODULE = Coro::State PACKAGE = Coro::Signal 4437MODULE = Coro::State PACKAGE = Coro::Signal
3088 4438
3089SV * 4439SV *
3090new (SV *klass) 4440new (SV *klass)
3091 CODE: 4441 CODE:
… …
3095 ); 4445 );
3096 OUTPUT: 4446 OUTPUT:
3097 RETVAL 4447 RETVAL
3098 4448
3099void 4449void
3100wait (SV *self) 4450wait (...)
3101 CODE: 4451 CODE:
3102 CORO_EXECUTE_SLF_XS (slf_init_signal_wait); 4452 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3103 4453
3104void 4454void
3105broadcast (SV *self) 4455broadcast (SV *self)
3106 CODE: 4456 CODE:
3107{ 4457{
3108 AV *av = (AV *)SvRV (self); 4458 AV *av = (AV *)SvRV (self);
3109 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4459 coro_signal_wake (aTHX_ av, AvFILLp (av));
3110} 4460}
3111 4461
3112void 4462void
3113send (SV *self) 4463send (SV *self)
… …
3121 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4471 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3122} 4472}
3123 4473
3124IV 4474IV
3125awaited (SV *self) 4475awaited (SV *self)
3126 CODE: 4476 CODE:
3127 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4477 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3128 OUTPUT: 4478 OUTPUT:
3129 RETVAL 4479 RETVAL
3130 4480
3131 4481
… …
3136 4486
3137void 4487void
3138_schedule (...) 4488_schedule (...)
3139 CODE: 4489 CODE:
3140{ 4490{
3141 static int incede; 4491 static int incede;
3142 4492
3143 api_cede_notself (aTHX); 4493 api_cede_notself (aTHX);
3144 4494
3145 ++incede; 4495 ++incede;
3146 while (coro_nready >= incede && api_cede (aTHX)) 4496 while (coro_nready >= incede && api_cede (aTHX))
… …
3162 4512
3163void 4513void
3164_register (char *target, char *proto, SV *req) 4514_register (char *target, char *proto, SV *req)
3165 CODE: 4515 CODE:
3166{ 4516{
3167 HV *st; 4517 SV *req_cv = s_get_cv_croak (req);
3168 GV *gvp;
3169 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3170 /* newXSproto doesn't return the CV on 5.8 */ 4518 /* newXSproto doesn't return the CV on 5.8 */
3171 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4519 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3172 sv_setpv ((SV *)slf_cv, proto); 4520 sv_setpv ((SV *)slf_cv, proto);
3173 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4521 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3174} 4522}
3175 4523
4524MODULE = Coro::State PACKAGE = Coro::Select
4525
4526void
4527patch_pp_sselect ()
4528 CODE:
4529 if (!coro_old_pp_sselect)
4530 {
4531 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4532 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4533 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4534 }
4535
4536void
4537unpatch_pp_sselect ()
4538 CODE:
4539 if (coro_old_pp_sselect)
4540 {
4541 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4542 coro_old_pp_sselect = 0;
4543 }
4544
4545MODULE = Coro::State PACKAGE = Coro::Util
4546
4547void
4548_exit (int code)
4549 CODE:
4550 _exit (code);
4551
4552NV
4553time ()
4554 CODE:
4555 RETVAL = nvtime (aTHX);
4556 OUTPUT:
4557 RETVAL
4558
4559NV
4560gettimeofday ()
4561 PPCODE:
4562{
4563 UV tv [2];
4564 u2time (aTHX_ tv);
4565 EXTEND (SP, 2);
4566 PUSHs (sv_2mortal (newSVuv (tv [0])));
4567 PUSHs (sv_2mortal (newSVuv (tv [1])));
4568}
4569

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