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Comparing Coro/Coro/State.xs (file contents):
Revision 1.327 by root, Mon Nov 24 06:07:16 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) && PERL_SUBVERSION >= (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#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD
117#endif
118
119#ifndef CORO_STACKGUARD
120# define CORO_STACKGUARD 0
121#endif 83#endif
122 84
123/* prefer perl internal functions over our own? */ 85/* prefer perl internal functions over our own? */
124#ifndef CORO_PREFER_PERL_FUNCTIONS 86#ifndef CORO_PREFER_PERL_FUNCTIONS
125# define CORO_PREFER_PERL_FUNCTIONS 0 87# define CORO_PREFER_PERL_FUNCTIONS 0
… …
133#else 95#else
134# define dSTACKLEVEL volatile void *stacklevel 96# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel) 97# define STACKLEVEL ((void *)&stacklevel)
136#endif 98#endif
137 99
138#define IN_DESTRUCT (PL_main_cv == Nullcv) 100#define IN_DESTRUCT PL_dirty
139
140#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
144#else
145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
152
153#define NOINLINE attribute ((noinline))
154 101
155#include "CoroAPI.h" 102#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */ 103#define GCoroAPI (&coroapi) /* very sneaky */
157 104
158#ifdef USE_ITHREADS 105#ifdef USE_ITHREADS
159# if CORO_PTHREAD 106# if CORO_PTHREAD
160static void *coro_thx; 107static void *coro_thx;
161# endif 108# endif
162#endif 109#endif
163 110
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
164static 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]);
165 129
166/* we hijack an hopefully unused CV flag for our purposes */ 130/* we hijack an hopefully unused CV flag for our purposes */
167#define CVf_SLF 0x4000 131#define CVf_SLF 0x4000
168static OP *pp_slf (pTHX); 132static OP *pp_slf (pTHX);
133static void slf_destroy (pTHX_ struct coro *coro);
169 134
170static U32 cctx_gen; 135static U32 cctx_gen;
171static size_t cctx_stacksize = CORO_STACKSIZE; 136static size_t cctx_stacksize = CORO_STACKSIZE;
172static struct CoroAPI coroapi; 137static struct CoroAPI coroapi;
173static AV *main_mainstack; /* used to differentiate between $main and others */ 138static AV *main_mainstack; /* used to differentiate between $main and others */
… …
181 146
182static GV *irsgv; /* $/ */ 147static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */ 148static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook; 149static SV *rv_diehook;
185static SV *rv_warnhook; 150static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187 151
188/* async_pool helper stuff */ 152/* async_pool helper stuff */
189static SV *sv_pool_rss; 153static SV *sv_pool_rss;
190static SV *sv_pool_size; 154static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */ 155static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */ 156static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */ 157static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler; 158static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196 159
197/* Coro::AnyEvent */ 160/* Coro::AnyEvent */
198static SV *sv_activity; 161static SV *sv_activity;
199 162
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
200static struct coro_cctx *cctx_first; 169static struct coro_cctx *cctx_first;
201static int cctx_count, cctx_idle; 170static int cctx_count, cctx_idle;
202 171
203enum { 172enum
173{
204 CC_MAPPED = 0x01, 174 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */ 175 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04, 176 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */ 177 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */ 178 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
213typedef struct coro_cctx 183typedef struct coro_cctx
214{ 184{
215 struct coro_cctx *next; 185 struct coro_cctx *next;
216 186
217 /* the stack */ 187 /* the stack */
218 void *sptr; 188 struct coro_stack stack;
219 size_t ssize;
220 189
221 /* cpu state */ 190 /* cpu state */
222 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
223 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
224 JMPENV *top_env; 195 JMPENV *top_env;
225 coro_context cctx; 196 coro_context cctx;
226 197
227 U32 gen; 198 U32 gen;
228#if CORO_USE_VALGRIND 199#if CORO_USE_VALGRIND
229 int valgrind_id; 200 int valgrind_id;
230#endif 201#endif
231 unsigned char flags; 202 unsigned char flags;
232} coro_cctx; 203} coro_cctx;
233 204
234coro_cctx *cctx_current; /* the currently running cctx */ 205static coro_cctx *cctx_current; /* the currently running cctx */
235 206
236/*****************************************************************************/ 207/*****************************************************************************/
237 208
209static MGVTBL coro_state_vtbl;
210
238enum { 211enum
212{
239 CF_RUNNING = 0x0001, /* coroutine is running */ 213 CF_RUNNING = 0x0001, /* coroutine is running */
240 CF_READY = 0x0002, /* coroutine is ready */ 214 CF_READY = 0x0002, /* coroutine is ready */
241 CF_NEW = 0x0004, /* has never been switched to */ 215 CF_NEW = 0x0004, /* has never been switched to */
242 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) */
243}; 219};
244 220
245/* 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 */
246typedef struct 222typedef struct
247{ 223{
248 SV *defsv;
249 AV *defav;
250 SV *errsv;
251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name; 224 #define VARx(name,expr,type) type name;
254# include "state.h" 225 #include "state.h"
255#undef VAR
256} perl_slots; 226} perl_slots;
257 227
228/* how many context stack entries do we need for perl_slots */
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 229#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259 230
260/* this is a structure representing a perl-level coroutine */ 231/* this is a structure representing a perl-level coroutine */
261struct coro { 232struct coro
233{
262 /* the C coroutine allocated to this perl coroutine, if any */ 234 /* the C coroutine allocated to this perl coroutine, if any */
263 coro_cctx *cctx; 235 coro_cctx *cctx;
236
237 /* ready queue */
238 struct coro *next_ready;
264 239
265 /* state data */ 240 /* state data */
266 struct CoroSLF slf_frame; /* saved slf frame */ 241 struct CoroSLF slf_frame; /* saved slf frame */
267 AV *mainstack; 242 AV *mainstack;
268 perl_slots *slot; /* basically the saved sp */ 243 perl_slots *slot; /* basically the saved sp */
269 244
270 CV *startcv; /* the CV to execute */ 245 CV *startcv; /* the CV to execute */
271 AV *args; /* data associated with this coroutine (initial args) */ 246 AV *args; /* data associated with this coroutine (initial args) */
272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */ 247 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */ 248 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276 249
277 /* statistics */ 250 /* statistics */
278 int usecount; /* number of transfers to this coro */ 251 int usecount; /* number of transfers to this coro */
279 252
280 /* coro process data */ 253 /* coro process data */
281 int prio; 254 int prio;
282 SV *except; /* exception to be thrown */ 255 SV *except; /* exception to be thrown */
283 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 */
284 259
285 /* async_pool */ 260 /* async_pool */
286 SV *saved_deffh; 261 SV *saved_deffh;
287 SV *invoke_cb; 262 SV *invoke_cb;
288 AV *invoke_av; 263 AV *invoke_av;
289 264
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;
274
290 /* linked list */ 275 /* linked list */
291 struct coro *next, *prev; 276 struct coro *next, *prev;
292}; 277};
293 278
294typedef struct coro *Coro__State; 279typedef struct coro *Coro__State;
295typedef struct coro *Coro__State_or_hashref; 280typedef struct coro *Coro__State_or_hashref;
296 281
297/* the following variables are effectively part of the perl context */ 282/* the following variables are effectively part of the perl context */
298/* and get copied between struct coro and these variables */ 283/* and get copied between struct coro and these variables */
299/* the mainr easonw e don't support windows process emulation */ 284/* the main reason we don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */ 285static struct CoroSLF slf_frame; /* the current slf frame */
301 286
302/** Coro ********************************************************************/ 287/** Coro ********************************************************************/
303 288
304#define PRIO_MAX 3 289#define CORO_PRIO_MAX 3
305#define PRIO_HIGH 1 290#define CORO_PRIO_HIGH 1
306#define PRIO_NORMAL 0 291#define CORO_PRIO_NORMAL 0
307#define PRIO_LOW -1 292#define CORO_PRIO_LOW -1
308#define PRIO_IDLE -3 293#define CORO_PRIO_IDLE -3
309#define PRIO_MIN -4 294#define CORO_PRIO_MIN -4
310 295
311/* for Coro.pm */ 296/* for Coro.pm */
312static SV *coro_current; 297static SV *coro_current;
313static SV *coro_readyhook; 298static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 299static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
315static CV *cv_coro_run, *cv_coro_terminate; 300static CV *cv_coro_run;
316static struct coro *coro_first; 301static struct coro *coro_first;
317#define coro_nready coroapi.nready 302#define coro_nready coroapi.nready
318 303
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
319/** lowlevel stuff **********************************************************/ 399/** lowlevel stuff **********************************************************/
320 400
321static SV * 401static SV * ecb_noinline
322coro_get_sv (pTHX_ const char *name, int create) 402coro_get_sv (pTHX_ const char *name, int create)
323{ 403{
324#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
325 /* 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 */
326 get_sv (name, create); 406 get_sv (name, create);
327#endif 407#endif
328 return get_sv (name, create); 408 return get_sv (name, create);
329} 409}
330 410
331static AV * 411static AV * ecb_noinline
332coro_get_av (pTHX_ const char *name, int create) 412coro_get_av (pTHX_ const char *name, int create)
333{ 413{
334#if PERL_VERSION_ATLEAST (5,10,0) 414#if PERL_VERSION_ATLEAST (5,10,0)
335 /* 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 */
336 get_av (name, create); 416 get_av (name, create);
337#endif 417#endif
338 return get_av (name, create); 418 return get_av (name, create);
339} 419}
340 420
341static HV * 421static HV * ecb_noinline
342coro_get_hv (pTHX_ const char *name, int create) 422coro_get_hv (pTHX_ const char *name, int create)
343{ 423{
344#if PERL_VERSION_ATLEAST (5,10,0) 424#if PERL_VERSION_ATLEAST (5,10,0)
345 /* 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 */
346 get_hv (name, create); 426 get_hv (name, create);
347#endif 427#endif
348 return get_hv (name, create); 428 return get_hv (name, create);
349} 429}
350 430
351/* may croak */ 431ecb_inline void
352INLINE CV * 432coro_times_update (void)
353coro_sv_2cv (pTHX_ SV *sv)
354{ 433{
355 HV *st; 434#ifdef coro_clock_gettime
356 GV *gvp; 435 struct timespec ts;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359 436
360static AV * 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 *
361coro_derive_padlist (pTHX_ CV *cv) 537coro_derive_padlist (pTHX_ CV *cv)
362{ 538{
363 AV *padlist = CvPADLIST (cv); 539 PADLIST *padlist = CvPADLIST (cv);
364 AV *newpadlist, *newpad; 540 PADLIST *newpadlist;
541 PADNAMELIST *padnames;
542 PAD *newpad;
543 PADOFFSET off = PadlistMAX (padlist) + 1;
365 544
366 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. */
367 AvREAL_off (newpadlist); 573 AvREAL_off (newpadlist);
368#if PERL_VERSION_ATLEAST (5,10,0)
369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
370#else
371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
372#endif 574#endif
373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
374 --AvFILLp (padlist);
375 575
376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 576 /* Already extended to 2 elements by newPADLIST. */
377 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;
378 584
379 return newpadlist; 585 return newpadlist;
380} 586}
381 587
382static void 588ecb_inline void
383free_padlist (pTHX_ AV *padlist) 589free_padlist (pTHX_ PADLIST *padlist)
384{ 590{
385 /* may be during global destruction */ 591 /* may be during global destruction */
386 if (SvREFCNT (padlist)) 592 if (!IN_DESTRUCT)
387 { 593 {
388 I32 i = AvFILLp (padlist); 594 I32 i = PadlistMAX (padlist);
389 while (i >= 0) 595
596 while (i > 0) /* special-case index 0 */
390 { 597 {
391 SV **svp = av_fetch (padlist, i--, FALSE); 598 /* we try to be extra-careful here */
599 PAD *pad = PadlistARRAY (padlist)[i--];
600
392 if (svp) 601 if (pad)
393 { 602 {
394 SV *sv; 603 I32 j = PadMAX (pad);
395 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 604
605 while (j >= 0)
396 SvREFCNT_dec (sv); 606 SvREFCNT_dec (PadARRAY (pad)[j--]);
397 607
608 PadMAX (pad) = -1;
398 SvREFCNT_dec (*svp); 609 SvREFCNT_dec (pad);
399 } 610 }
400 } 611 }
401 612
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);
402 SvREFCNT_dec ((SV*)padlist); 621 SvREFCNT_dec ((SV*)padlist);
622#endif
403 } 623 }
404} 624}
405 625
406static int 626static int
407coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 627coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
408{ 628{
409 AV *padlist; 629 PADLIST *padlist;
410 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;
411 632
412 /* casting is fun. */ 633 /* perl manages to free our internal AV and _then_ call us */
413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 634 if (IN_DESTRUCT)
635 return 0;
636
637 while (len--)
414 free_padlist (aTHX_ padlist); 638 free_padlist (aTHX_ padlists[len]);
415
416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
417 639
418 return 0; 640 return 0;
419} 641}
420
421#define CORO_MAGIC_type_cv 26
422#define CORO_MAGIC_type_state PERL_MAGIC_ext
423 642
424static MGVTBL coro_cv_vtbl = { 643static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0, 644 0, 0, 0, 0,
426 coro_cv_free 645 coro_cv_free
427}; 646};
428 647
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
471
472/* the next two functions merely cache the padlists */ 648/* the next two functions merely cache the padlists */
473static void 649ecb_inline void
474get_padlist (pTHX_ CV *cv) 650get_padlist (pTHX_ CV *cv)
475{ 651{
476 MAGIC *mg = CORO_MAGIC_cv (cv); 652 MAGIC *mg = CORO_MAGIC_cv (cv);
477 AV *av; 653 size_t *lenp;
478 654
479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 655 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 656 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
481 else 657 else
482 { 658 {
483#if CORO_PREFER_PERL_FUNCTIONS 659#if CORO_PREFER_PERL_FUNCTIONS
484 /* this is probably cleaner? but also slower! */ 660 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */ 661 /* in practise, it seems to be less stable */
… …
491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); 667 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
492#endif 668#endif
493 } 669 }
494} 670}
495 671
496static void 672ecb_inline void
497put_padlist (pTHX_ CV *cv) 673put_padlist (pTHX_ CV *cv)
498{ 674{
499 MAGIC *mg = CORO_MAGIC_cv (cv); 675 MAGIC *mg = CORO_MAGIC_cv (cv);
500 AV *av;
501 676
502 if (expect_false (!mg)) 677 if (ecb_expect_false (!mg))
678 {
503 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);
504 687
505 av = (AV *)mg->mg_obj; 688 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
506
507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
508 av_extend (av, AvMAX (av) + 1);
509
510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
511} 689}
512 690
513/** 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);
514 764
515static void 765static void
516load_perl (pTHX_ Coro__State c) 766load_perl (pTHX_ Coro__State c)
517{ 767{
518 perl_slots *slot = c->slot; 768 perl_slots *slot = c->slot;
519 c->slot = 0; 769 c->slot = 0;
520 770
521 PL_mainstack = c->mainstack; 771 PL_mainstack = c->mainstack;
522 772
523 GvSV (PL_defgv) = slot->defsv; 773#if CORO_JIT
524 GvAV (PL_defgv) = slot->defav; 774 load_perl_slots (slot);
525 GvSV (PL_errgv) = slot->errsv; 775#else
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
529 #define VAR(name,type) PL_ ## name = slot->name; 776 #define VARx(name,expr,type) expr = slot->name;
530 # include "state.h" 777 #include "state.h"
531 #undef VAR 778#endif
532 779
533 { 780 {
534 dSP; 781 dSP;
535 782
536 CV *cv; 783 CV *cv;
537 784
538 /* now do the ugly restore mess */ 785 /* now do the ugly restore mess */
539 while (expect_true (cv = (CV *)POPs)) 786 while (ecb_expect_true (cv = (CV *)POPs))
540 { 787 {
541 put_padlist (aTHX_ cv); /* mark this padlist as available */ 788 put_padlist (aTHX_ cv); /* mark this padlist as available */
542 CvDEPTH (cv) = PTR2IV (POPs); 789 CvDEPTH (cv) = PTR2IV (POPs);
543 CvPADLIST (cv) = (AV *)POPs; 790 CvPADLIST (cv) = (PADLIST *)POPs;
544 } 791 }
545 792
546 PUTBACK; 793 PUTBACK;
547 } 794 }
548 795
549 slf_frame = c->slf_frame; 796 slf_frame = c->slf_frame;
550 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);
551} 824}
552 825
553static void 826static void
554save_perl (pTHX_ Coro__State c) 827save_perl (pTHX_ Coro__State c)
555{ 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
556 c->except = CORO_THROW; 855 c->except = CORO_THROW;
557 c->slf_frame = slf_frame; 856 c->slf_frame = slf_frame;
558 857
559 { 858 {
560 dSP; 859 dSP;
… …
569 868
570 XPUSHs (Nullsv); 869 XPUSHs (Nullsv);
571 /* this loop was inspired by pp_caller */ 870 /* this loop was inspired by pp_caller */
572 for (;;) 871 for (;;)
573 { 872 {
574 while (expect_true (cxix >= 0)) 873 while (ecb_expect_true (cxix >= 0))
575 { 874 {
576 PERL_CONTEXT *cx = &ccstk[cxix--]; 875 PERL_CONTEXT *cx = &ccstk[cxix--];
577 876
578 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))
579 { 878 {
580 CV *cv = cx->blk_sub.cv; 879 CV *cv = cx->blk_sub.cv;
581 880
582 if (expect_true (CvDEPTH (cv))) 881 if (ecb_expect_true (CvDEPTH (cv)))
583 { 882 {
584 EXTEND (SP, 3); 883 EXTEND (SP, 3);
585 PUSHs ((SV *)CvPADLIST (cv)); 884 PUSHs ((SV *)CvPADLIST (cv));
586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 885 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
587 PUSHs ((SV *)cv); 886 PUSHs ((SV *)cv);
… …
590 get_padlist (aTHX_ cv); 889 get_padlist (aTHX_ cv);
591 } 890 }
592 } 891 }
593 } 892 }
594 893
595 if (expect_true (top_si->si_type == PERLSI_MAIN)) 894 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
596 break; 895 break;
597 896
598 top_si = top_si->si_prev; 897 top_si = top_si->si_prev;
599 ccstk = top_si->si_cxstack; 898 ccstk = top_si->si_cxstack;
600 cxix = top_si->si_cxix; 899 cxix = top_si->si_cxix;
… …
602 901
603 PUTBACK; 902 PUTBACK;
604 } 903 }
605 904
606 /* allocate some space on the context stack for our purposes */ 905 /* allocate some space on the context stack for our purposes */
607 /* we manually unroll here, as usually 2 slots is enough */ 906 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 { 907 {
612 int i; 908 unsigned int i;
909
613 for (i = 3; i < SLOT_COUNT; ++i) 910 for (i = 0; i < SLOT_COUNT; ++i)
614 CXINC; 911 CXINC;
615 } 912
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 913 cxstack_ix -= SLOT_COUNT; /* undo allocation */
914 }
617 915
618 c->mainstack = PL_mainstack; 916 c->mainstack = PL_mainstack;
619 917
620 { 918 {
621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 919 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
622 920
623 slot->defav = GvAV (PL_defgv); 921#if CORO_JIT
624 slot->defsv = DEFSV; 922 save_perl_slots (slot);
625 slot->errsv = ERRSV; 923#else
626 slot->irsgv = GvSV (irsgv);
627 slot->hinthv = GvHV (PL_hintgv);
628
629 #define VAR(name,type) slot->name = PL_ ## name; 924 #define VARx(name,expr,type) slot->name = expr;
630 # include "state.h" 925 #include "state.h"
631 #undef VAR 926#endif
632 } 927 }
633} 928}
634 929
635/* 930/*
636 * allocate various perl stacks. This is almost an exact copy 931 * allocate various perl stacks. This is almost an exact copy
… …
642# define coro_init_stacks(thx) init_stacks () 937# define coro_init_stacks(thx) init_stacks ()
643#else 938#else
644static void 939static void
645coro_init_stacks (pTHX) 940coro_init_stacks (pTHX)
646{ 941{
647 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() */
648 PL_curstackinfo->si_type = PERLSI_MAIN; 943 PL_curstackinfo->si_type = PERLSI_MAIN;
649 PL_curstack = PL_curstackinfo->si_stack; 944 PL_curstack = PL_curstackinfo->si_stack;
650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 945 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
651 946
652 PL_stack_base = AvARRAY(PL_curstack); 947 PL_stack_base = AvARRAY(PL_curstack);
… …
667#endif 962#endif
668 963
669 New(54,PL_scopestack,8,I32); 964 New(54,PL_scopestack,8,I32);
670 PL_scopestack_ix = 0; 965 PL_scopestack_ix = 0;
671 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
672 970
673 New(54,PL_savestack,24,ANY); 971 New(54,PL_savestack,24,ANY);
674 PL_savestack_ix = 0; 972 PL_savestack_ix = 0;
675 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
676 979
677#if !PERL_VERSION_ATLEAST (5,10,0) 980#if !PERL_VERSION_ATLEAST (5,10,0)
678 New(54,PL_retstack,4,OP*); 981 New(54,PL_retstack,4,OP*);
679 PL_retstack_ix = 0; 982 PL_retstack_ix = 0;
680 PL_retstack_max = 4; 983 PL_retstack_max = 4;
… …
704 } 1007 }
705 1008
706 Safefree (PL_tmps_stack); 1009 Safefree (PL_tmps_stack);
707 Safefree (PL_markstack); 1010 Safefree (PL_markstack);
708 Safefree (PL_scopestack); 1011 Safefree (PL_scopestack);
1012#if HAS_SCOPESTACK_NAME
1013 Safefree (PL_scopestack_name);
1014#endif
709 Safefree (PL_savestack); 1015 Safefree (PL_savestack);
710#if !PERL_VERSION_ATLEAST (5,10,0) 1016#if !PERL_VERSION_ATLEAST (5,10,0)
711 Safefree (PL_retstack); 1017 Safefree (PL_retstack);
712#endif 1018#endif
713} 1019}
… …
743 } 1049 }
744 1050
745 return rss; 1051 return rss;
746} 1052}
747 1053
748/** coroutine stack handling ************************************************/ 1054/** provide custom get/set/clear methods for %SIG elements ******************/
749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753 1055
754/* apparently < 5.8.8 */ 1056/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const 1057#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1058#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1059 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr) 1060 (const char*)(mg)->mg_ptr)
759#endif 1061#endif
760 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
761/* 1082/*
762 * This overrides the default magic get method of %SIG elements. 1083 * This overrides the default magic get method of %SIG elements.
763 * 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
764 * 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),
765 * readback here. 1086 * we just provide our own readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */ 1087 */
770static int 1088static int ecb_cold
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1089coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{ 1090{
773 const char *s = MgPV_nolen_const (mg); 1091 const char *s = MgPV_nolen_const (mg);
774 1092
775 if (*s == '_') 1093 if (*s == '_')
776 { 1094 {
777 SV **svp = 0; 1095 SV **svp = 0;
778 1096
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1097 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1098 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781 1099
782 if (svp) 1100 if (svp)
783 { 1101 {
784 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);
785 return 0; 1112 return 0;
786 } 1113 }
787 } 1114 }
788 1115
789 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;
790} 1117}
791 1118
792static int 1119static int ecb_cold
793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1120coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{ 1121{
795 const char *s = MgPV_nolen_const (mg); 1122 const char *s = MgPV_nolen_const (mg);
796 1123
797 if (*s == '_') 1124 if (*s == '_')
… …
808 SvREFCNT_dec (old); 1135 SvREFCNT_dec (old);
809 return 0; 1136 return 0;
810 } 1137 }
811 } 1138 }
812 1139
813 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;
814} 1141}
815 1142
816static int 1143static int ecb_cold
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1144coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{ 1145{
819 const char *s = MgPV_nolen_const (mg); 1146 const char *s = MgPV_nolen_const (mg);
820 1147
821 if (*s == '_') 1148 if (*s == '_')
… …
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1153 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827 1154
828 if (svp) 1155 if (svp)
829 { 1156 {
830 SV *old = *svp; 1157 SV *old = *svp;
831 *svp = newSVsv (sv); 1158 *svp = SvOK (sv) ? newSVsv (sv) : 0;
832 SvREFCNT_dec (old); 1159 SvREFCNT_dec (old);
833 return 0; 1160 return 0;
834 } 1161 }
835 } 1162 }
836 1163
837 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;
838} 1165}
839 1166
840static void 1167static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta) 1168prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{ 1169{
… …
854slf_check_repeat (pTHX_ struct CoroSLF *frame) 1181slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{ 1182{
856 return 1; 1183 return 1;
857} 1184}
858 1185
859static UNOP coro_setup_op; 1186/** coroutine stack handling ************************************************/
860 1187
861static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1188static UNOP init_perl_op;
1189
1190ecb_noinline static void /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro) 1191init_perl (pTHX_ struct coro *coro)
863{ 1192{
864 /* 1193 /*
865 * emulate part of the perl startup here. 1194 * emulate part of the perl startup here.
866 */ 1195 */
867 coro_init_stacks (aTHX); 1196 coro_init_stacks (aTHX);
… …
874 PL_comppad_name_fill = 0; 1203 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0; 1204 PL_comppad_name_floor = 0;
876 PL_curpm = 0; 1205 PL_curpm = 0;
877 PL_curpad = 0; 1206 PL_curpad = 0;
878 PL_localizing = 0; 1207 PL_localizing = 0;
879 PL_dirty = 0;
880 PL_restartop = 0; 1208 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0) 1209#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0; 1210 PL_parser = 0;
883#endif 1211#endif
884 PL_hints = 0; 1212 PL_hints = 0;
885 1213
886 /* recreate the die/warn hooks */ 1214 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1215 PL_diehook = SvREFCNT_inc (rv_diehook);
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1216 PL_warnhook = SvREFCNT_inc (rv_warnhook);
889 1217
890 GvSV (PL_defgv) = newSV (0); 1218 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0; 1219 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0); 1220 GvSV (PL_errgv) = newSV (0);
893 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);
894 GvHV (PL_hintgv) = 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
895 PL_rs = newSVsv (GvSV (irsgv)); 1226 PL_rs = newSVsv (GvSV (irsgv));
896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1227 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
897 1228
898 { 1229 {
899 dSP; 1230 dSP;
… …
914 /* 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
915 * 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.
916 */ 1247 */
917 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 */
918 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;
919 1251
920 /* 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 */
921 coro_setup_op.op_next = PL_op; 1253 init_perl_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB; 1254 init_perl_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf; 1255 init_perl_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */ 1256 /* no flags etc. required, as an init function won't be called */
925 1257
926 PL_op = (OP *)&coro_setup_op; 1258 PL_op = (OP *)&init_perl_op;
927 1259
928 /* copy throw, in case it was set before coro_setup */ 1260 /* copy throw, in case it was set before init_perl */
929 CORO_THROW = coro->except; 1261 CORO_THROW = coro->except;
930}
931 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
932static void 1272static void
933coro_destruct (pTHX_ struct coro *coro) 1273coro_unwind_stacks (pTHX)
934{ 1274{
935 if (!IN_DESTRUCT) 1275 if (!IN_DESTRUCT)
936 { 1276 {
937 /* restore all saved variables and stuff */ 1277 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0); 1278 LEAVE_SCOPE (0);
… …
946 POPSTACK_TO (PL_mainstack); 1286 POPSTACK_TO (PL_mainstack);
947 1287
948 /* unwind main stack */ 1288 /* unwind main stack */
949 dounwind (-1); 1289 dounwind (-1);
950 } 1290 }
1291}
951 1292
952 SvREFCNT_dec (GvSV (PL_defgv)); 1293static void
953 SvREFCNT_dec (GvAV (PL_defgv)); 1294destroy_perl (pTHX_ struct coro *coro)
954 SvREFCNT_dec (GvSV (PL_errgv)); 1295{
955 SvREFCNT_dec (PL_defoutgv); 1296 SV *svf [9];
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
959 1297
960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962 1298 {
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
963 SvREFCNT_dec (coro->saved_deffh); 1341 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb); 1342 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb); 1343 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av); 1344 SvREFCNT_dec (coro->invoke_av);
967 1345 SvREFCNT_dec (coro->on_enter_xs);
968 coro_destruct_stacks (aTHX); 1346 SvREFCNT_dec (coro->on_leave_xs);
1347 }
969} 1348}
970 1349
971INLINE void 1350ecb_inline void
972free_coro_mortal (pTHX) 1351free_coro_mortal (pTHX)
973{ 1352{
974 if (expect_true (coro_mortal)) 1353 if (ecb_expect_true (coro_mortal))
975 { 1354 {
976 SvREFCNT_dec (coro_mortal); 1355 SvREFCNT_dec ((SV *)coro_mortal);
977 coro_mortal = 0; 1356 coro_mortal = 0;
978 } 1357 }
979} 1358}
980 1359
981static int 1360static int
… …
1035 1414
1036 if (PL_curcop != &PL_compiling) 1415 if (PL_curcop != &PL_compiling)
1037 { 1416 {
1038 SV **cb; 1417 SV **cb;
1039 1418
1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) 1419 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1041 { 1420 {
1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1421 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1043 1422
1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1423 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1045 { 1424 {
… …
1114 1493
1115 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 */
1116} 1495}
1117 1496
1118/* 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 */
1119static void NOINLINE 1498static void ecb_noinline
1120cctx_prepare (pTHX) 1499cctx_prepare (pTHX)
1121{ 1500{
1122 PL_top_env = &PL_start_env; 1501 PL_top_env = &PL_start_env;
1123 1502
1124 if (cctx_current->flags & CC_TRACE) 1503 if (cctx_current->flags & CC_TRACE)
… …
1135 slf_frame.prepare = slf_prepare_set_stacklevel; 1514 slf_frame.prepare = slf_prepare_set_stacklevel;
1136 slf_frame.check = slf_check_set_stacklevel; 1515 slf_frame.check = slf_check_set_stacklevel;
1137} 1516}
1138 1517
1139/* 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 */
1140INLINE void 1519ecb_inline void
1141transfer_tail (pTHX) 1520transfer_tail (pTHX)
1142{ 1521{
1143 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);
1144} 1535}
1145 1536
1146/* 1537/*
1147 * this is a _very_ stripped down perl interpreter ;) 1538 * this is a _very_ stripped down perl interpreter ;)
1148 */ 1539 */
… …
1170 /* 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 */
1171 PL_restartop = PL_op; 1562 PL_restartop = PL_op;
1172 perl_run (PL_curinterp); 1563 perl_run (PL_curinterp);
1173 /* 1564 /*
1174 * Unfortunately, there is no way to get at the return values of the 1565 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these 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.
1176 */ 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;
1177 1576
1178 /* 1577 /*
1179 * 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
1180 * 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)
1181 * 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
1182 * bootstrap-time "top" top_env, as we cannot restore the "main" 1581 * doing in that case. YMMV.
1183 * coroutine as Coro has no such concept
1184 */ 1582 */
1185 PL_top_env = main_top_env; 1583 perlish_exit (aTHX);
1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 } 1584 }
1188} 1585}
1189 1586
1190static coro_cctx * 1587static coro_cctx *
1191cctx_new () 1588cctx_new (void)
1192{ 1589{
1193 coro_cctx *cctx; 1590 coro_cctx *cctx;
1194 1591
1195 ++cctx_count; 1592 ++cctx_count;
1196 New (0, cctx, 1, coro_cctx); 1593 New (0, cctx, 1, coro_cctx);
… …
1202 return cctx; 1599 return cctx;
1203} 1600}
1204 1601
1205/* create a new cctx only suitable as source */ 1602/* create a new cctx only suitable as source */
1206static coro_cctx * 1603static coro_cctx *
1207cctx_new_empty () 1604cctx_new_empty (void)
1208{ 1605{
1209 coro_cctx *cctx = cctx_new (); 1606 coro_cctx *cctx = cctx_new ();
1210 1607
1211 cctx->sptr = 0; 1608 cctx->stack.sptr = 0;
1212 coro_create (&cctx->cctx, 0, 0, 0, 0); 1609 coro_create (&cctx->cctx, 0, 0, 0, 0);
1213 1610
1214 return cctx; 1611 return cctx;
1215} 1612}
1216 1613
1217/* create a new cctx suitable as destination/running a perl interpreter */ 1614/* create a new cctx suitable as destination/running a perl interpreter */
1218static coro_cctx * 1615static coro_cctx *
1219cctx_new_run () 1616cctx_new_run (void)
1220{ 1617{
1221 coro_cctx *cctx = cctx_new (); 1618 coro_cctx *cctx = cctx_new ();
1222 void *stack_start;
1223 size_t stack_size;
1224 1619
1225#if HAVE_MMAP 1620 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1226 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1227 /* mmap supposedly does allocate-on-write for us */
1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1229
1230 if (cctx->sptr != (void *)-1)
1231 {
1232 #if CORO_STACKGUARD
1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1234 #endif
1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1237 cctx->flags |= CC_MAPPED;
1238 } 1621 {
1239 else
1240#endif
1241 {
1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1243 New (0, cctx->sptr, cctx_stacksize, long);
1244
1245 if (!cctx->sptr)
1246 {
1247 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1622 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1248 _exit (EXIT_FAILURE); 1623 _exit (EXIT_FAILURE);
1249 }
1250
1251 stack_start = cctx->sptr;
1252 stack_size = cctx->ssize;
1253 } 1624 }
1254 1625
1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1257 #endif
1258
1259 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);
1260 1627
1261 return cctx; 1628 return cctx;
1262} 1629}
1263 1630
1264static void 1631static void
1265cctx_destroy (coro_cctx *cctx) 1632cctx_destroy (coro_cctx *cctx)
1266{ 1633{
1267 if (!cctx) 1634 if (!cctx)
1268 return; 1635 return;
1269 1636
1270 assert (cctx != cctx_current);//D temporary 1637 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1271 1638
1272 --cctx_count; 1639 --cctx_count;
1273 coro_destroy (&cctx->cctx); 1640 coro_destroy (&cctx->cctx);
1274 1641
1275 /* coro_transfer creates new, empty cctx's */ 1642 coro_stack_free (&cctx->stack);
1276 if (cctx->sptr)
1277 {
1278 #if CORO_USE_VALGRIND
1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1280 #endif
1281
1282#if HAVE_MMAP
1283 if (cctx->flags & CC_MAPPED)
1284 munmap (cctx->sptr, cctx->ssize);
1285 else
1286#endif
1287 Safefree (cctx->sptr);
1288 }
1289 1643
1290 Safefree (cctx); 1644 Safefree (cctx);
1291} 1645}
1292 1646
1293/* wether this cctx should be destructed */ 1647/* wether this cctx should be destructed */
1294#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))
1295 1649
1296static coro_cctx * 1650static coro_cctx *
1297cctx_get (pTHX) 1651cctx_get (pTHX)
1298{ 1652{
1299 while (expect_true (cctx_first)) 1653 while (ecb_expect_true (cctx_first))
1300 { 1654 {
1301 coro_cctx *cctx = cctx_first; 1655 coro_cctx *cctx = cctx_first;
1302 cctx_first = cctx->next; 1656 cctx_first = cctx->next;
1303 --cctx_idle; 1657 --cctx_idle;
1304 1658
1305 if (expect_true (!CCTX_EXPIRED (cctx))) 1659 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1306 return cctx; 1660 return cctx;
1307 1661
1308 cctx_destroy (cctx); 1662 cctx_destroy (cctx);
1309 } 1663 }
1310 1664
… …
1312} 1666}
1313 1667
1314static void 1668static void
1315cctx_put (coro_cctx *cctx) 1669cctx_put (coro_cctx *cctx)
1316{ 1670{
1317 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));
1318 1672
1319 /* free another cctx if overlimit */ 1673 /* free another cctx if overlimit */
1320 if (expect_false (cctx_idle >= cctx_max_idle)) 1674 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1321 { 1675 {
1322 coro_cctx *first = cctx_first; 1676 coro_cctx *first = cctx_first;
1323 cctx_first = first->next; 1677 cctx_first = first->next;
1324 --cctx_idle; 1678 --cctx_idle;
1325 1679
… …
1336static void 1690static void
1337transfer_check (pTHX_ struct coro *prev, struct coro *next) 1691transfer_check (pTHX_ struct coro *prev, struct coro *next)
1338{ 1692{
1339 /* TODO: throwing up here is considered harmful */ 1693 /* TODO: throwing up here is considered harmful */
1340 1694
1341 if (expect_true (prev != next)) 1695 if (ecb_expect_true (prev != next))
1342 { 1696 {
1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1697 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1344 croak ("Coro::State::transfer called with a suspended 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,");
1345 1699
1346 if (expect_false (next->flags & CF_RUNNING)) 1700 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1348
1349 if (expect_false (next->flags & CF_DESTROYED))
1350 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,");
1351 1702
1352#if !PERL_VERSION_ATLEAST (5,10,0) 1703#if !PERL_VERSION_ATLEAST (5,10,0)
1353 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1704 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1354 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,");
1355#endif 1706#endif
1356 } 1707 }
1357} 1708}
1358 1709
1359/* always use the TRANSFER macro */ 1710/* always use the TRANSFER macro */
1360static void NOINLINE /* noinline so we have a fixed stackframe */ 1711static void ecb_noinline /* noinline so we have a fixed stackframe */
1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1712transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1362{ 1713{
1363 dSTACKLEVEL; 1714 dSTACKLEVEL;
1364 1715
1365 /* sometimes transfer is only called to set idle_sp */ 1716 /* sometimes transfer is only called to set idle_sp */
1366 if (expect_false (!prev)) 1717 if (ecb_expect_false (!prev))
1367 { 1718 {
1368 cctx_current->idle_sp = STACKLEVEL; 1719 cctx_current->idle_sp = STACKLEVEL;
1369 assert (cctx_current->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 */
1370 } 1721 }
1371 else if (expect_true (prev != next)) 1722 else if (ecb_expect_true (prev != next))
1372 { 1723 {
1373 coro_cctx *cctx_prev; 1724 coro_cctx *cctx_prev;
1374 1725
1375 if (expect_false (prev->flags & CF_NEW)) 1726 if (ecb_expect_false (prev->flags & CF_NEW))
1376 { 1727 {
1377 /* create a new empty/source context */ 1728 /* create a new empty/source context */
1378 prev->flags &= ~CF_NEW; 1729 prev->flags &= ~CF_NEW;
1379 prev->flags |= CF_RUNNING; 1730 prev->flags |= CF_RUNNING;
1380 } 1731 }
… …
1383 next->flags |= CF_RUNNING; 1734 next->flags |= CF_RUNNING;
1384 1735
1385 /* first get rid of the old state */ 1736 /* first get rid of the old state */
1386 save_perl (aTHX_ prev); 1737 save_perl (aTHX_ prev);
1387 1738
1388 if (expect_false (next->flags & CF_NEW)) 1739 if (ecb_expect_false (next->flags & CF_NEW))
1389 { 1740 {
1390 /* need to start coroutine */ 1741 /* need to start coroutine */
1391 next->flags &= ~CF_NEW; 1742 next->flags &= ~CF_NEW;
1392 /* setup coroutine call */ 1743 /* setup coroutine call */
1393 coro_setup (aTHX_ next); 1744 init_perl (aTHX_ next);
1394 } 1745 }
1395 else 1746 else
1396 load_perl (aTHX_ next); 1747 load_perl (aTHX_ next);
1397 1748
1398 assert (!prev->cctx);//D temporary
1399
1400 /* possibly untie and reuse the cctx */ 1749 /* possibly untie and reuse the cctx */
1401 if (expect_true ( 1750 if (ecb_expect_true (
1402 cctx_current->idle_sp == STACKLEVEL 1751 cctx_current->idle_sp == STACKLEVEL
1403 && !(cctx_current->flags & CC_TRACE) 1752 && !(cctx_current->flags & CC_TRACE)
1404 && !force_cctx 1753 && !force_cctx
1405 )) 1754 ))
1406 { 1755 {
1407 /* 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 */
1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); 1757 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1409 1758
1410 /* 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. */
1411 /* without this the next cctx_get might destroy the running cctx while still in use */ 1760 /* without this the next cctx_get might destroy the running cctx while still in use */
1412 if (expect_false (CCTX_EXPIRED (cctx_current))) 1761 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1413 if (expect_true (!next->cctx)) 1762 if (ecb_expect_true (!next->cctx))
1414 next->cctx = cctx_get (aTHX); 1763 next->cctx = cctx_get (aTHX);
1415 1764
1416 cctx_put (cctx_current); 1765 cctx_put (cctx_current);
1417 } 1766 }
1418 else 1767 else
1419 prev->cctx = cctx_current; 1768 prev->cctx = cctx_current;
1420 1769
1421 ++next->usecount; 1770 ++next->usecount;
1422 1771
1423 cctx_prev = cctx_current; 1772 cctx_prev = cctx_current;
1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); 1773 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1425 1774
1426 next->cctx = 0; 1775 next->cctx = 0;
1427 1776
1428 if (expect_false (cctx_prev != cctx_current)) 1777 if (ecb_expect_false (cctx_prev != cctx_current))
1429 { 1778 {
1430 cctx_prev->top_env = PL_top_env; 1779 cctx_prev->top_env = PL_top_env;
1431 PL_top_env = cctx_current->top_env; 1780 PL_top_env = cctx_current->top_env;
1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); 1781 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1433 } 1782 }
… …
1439#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))
1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1789#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1441 1790
1442/** high level stuff ********************************************************/ 1791/** high level stuff ********************************************************/
1443 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 */
1444static int 1795static void
1796coro_call_on_destroy (pTHX_ struct coro *coro);
1797
1798static void
1445coro_state_destroy (pTHX_ struct coro *coro) 1799coro_state_destroy (pTHX_ struct coro *coro)
1446{ 1800{
1447 if (coro->flags & CF_DESTROYED) 1801 if (coro->flags & CF_ZOMBIE)
1448 return 0; 1802 return;
1449 1803
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro); 1804 slf_destroy (aTHX_ coro);
1452 1805
1453 coro->flags |= CF_DESTROYED; 1806 coro->flags |= CF_ZOMBIE;
1454 1807
1455 if (coro->flags & CF_READY) 1808 if (coro->flags & CF_READY)
1456 { 1809 {
1457 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1810 /* reduce nready, as destroying a ready coro effectively unreadies it */
1458 /* alternative: look through all ready queues and remove the coro */ 1811 /* alternative: look through all ready queues and remove the coro */
1459 --coro_nready; 1812 --coro_nready;
1460 } 1813 }
1461 else 1814 else
1462 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 */
1463 1816
1464 if (coro->mainstack && coro->mainstack != main_mainstack) 1817 if (coro->next) coro->next->prev = coro->prev;
1465 { 1818 if (coro->prev) coro->prev->next = coro->next;
1466 struct coro temp; 1819 if (coro == coro_first) coro_first = coro->next;
1467 1820
1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1821 if (coro->mainstack
1469 1822 && coro->mainstack != main_mainstack
1470 save_perl (aTHX_ &temp); 1823 && coro->slot
1824 && !PL_dirty)
1471 load_perl (aTHX_ coro); 1825 destroy_perl (aTHX_ coro);
1472
1473 coro_destruct (aTHX_ coro);
1474
1475 load_perl (aTHX_ &temp);
1476
1477 coro->slot = 0;
1478 }
1479 1826
1480 cctx_destroy (coro->cctx); 1827 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv); 1828 SvREFCNT_dec (coro->startcv);
1482 SvREFCNT_dec (coro->args); 1829 SvREFCNT_dec (coro->args);
1830 SvREFCNT_dec (coro->swap_sv);
1483 SvREFCNT_dec (CORO_THROW); 1831 SvREFCNT_dec (CORO_THROW);
1484 1832
1485 if (coro->next) coro->next->prev = coro->prev; 1833 coro_call_on_destroy (aTHX_ coro);
1486 if (coro->prev) coro->prev->next = coro->next;
1487 if (coro == coro_first) coro_first = coro->next;
1488 1834
1489 return 1; 1835 /* more destruction mayhem in coro_state_free */
1490} 1836}
1491 1837
1492static int 1838static int
1493coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1839coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1494{ 1840{
1495 struct coro *coro = (struct coro *)mg->mg_ptr; 1841 struct coro *coro = (struct coro *)mg->mg_ptr;
1496 mg->mg_ptr = 0; 1842 mg->mg_ptr = 0;
1497 1843
1498 coro->hv = 0;
1499
1500 if (--coro->refcnt < 0)
1501 {
1502 coro_state_destroy (aTHX_ coro); 1844 coro_state_destroy (aTHX_ coro);
1845 SvREFCNT_dec (coro->on_destroy);
1846 SvREFCNT_dec (coro->status);
1847
1503 Safefree (coro); 1848 Safefree (coro);
1504 }
1505 1849
1506 return 0; 1850 return 0;
1507} 1851}
1508 1852
1509static int 1853static int ecb_cold
1510coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1854coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1511{ 1855{
1512 struct coro *coro = (struct coro *)mg->mg_ptr; 1856 /* called when perl clones the current process the slow way (windows process emulation) */
1513 1857 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1514 ++coro->refcnt; 1858 mg->mg_ptr = 0;
1859 mg->mg_virtual = 0;
1515 1860
1516 return 0; 1861 return 0;
1517} 1862}
1518 1863
1519static MGVTBL coro_state_vtbl = { 1864static MGVTBL coro_state_vtbl = {
… …
1542 1887
1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1888 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1544 TRANSFER (ta, 1); 1889 TRANSFER (ta, 1);
1545} 1890}
1546 1891
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1570/** Coro ********************************************************************/ 1892/** Coro ********************************************************************/
1571 1893
1572INLINE void 1894ecb_inline void
1573coro_enq (pTHX_ struct coro *coro) 1895coro_enq (pTHX_ struct coro *coro)
1574{ 1896{
1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1897 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1576}
1577 1898
1578INLINE 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 *
1579coro_deq (pTHX) 1907coro_deq (pTHX)
1580{ 1908{
1581 int prio; 1909 int prio;
1582 1910
1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1911 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1584 if (AvFILLp (coro_ready [prio]) >= 0) 1912 {
1585 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 }
1586 1922
1587 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;
1588} 1941}
1589 1942
1590static int 1943static int
1591api_ready (pTHX_ SV *coro_sv) 1944api_ready (pTHX_ SV *coro_sv)
1592{ 1945{
1593 struct coro *coro;
1594 SV *sv_hook;
1595 void (*xs_hook)(void);
1596
1597 coro = SvSTATE (coro_sv); 1946 struct coro *coro = SvSTATE (coro_sv);
1598 1947
1599 if (coro->flags & CF_READY) 1948 if (coro->flags & CF_READY)
1600 return 0; 1949 return 0;
1601 1950
1602 coro->flags |= CF_READY; 1951 coro->flags |= CF_READY;
1603 1952
1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro); 1953 coro_enq (aTHX_ coro);
1608 ++coro_nready;
1609 1954
1610 if (sv_hook) 1955 if (!coro_nready++)
1611 { 1956 if (coroapi.readyhook)
1612 dSP; 1957 coroapi.readyhook ();
1613
1614 ENTER;
1615 SAVETMPS;
1616
1617 PUSHMARK (SP);
1618 PUTBACK;
1619 call_sv (sv_hook, G_VOID | G_DISCARD);
1620
1621 FREETMPS;
1622 LEAVE;
1623 }
1624
1625 if (xs_hook)
1626 xs_hook ();
1627 1958
1628 return 1; 1959 return 1;
1629} 1960}
1630 1961
1631static int 1962static int
… …
1633{ 1964{
1634 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1965 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1635} 1966}
1636 1967
1637/* expects to own a reference to next->hv */ 1968/* expects to own a reference to next->hv */
1638INLINE void 1969ecb_inline void
1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) 1970prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1640{ 1971{
1641 SV *prev_sv = SvRV (coro_current); 1972 SV *prev_sv = SvRV (coro_current);
1642 1973
1643 ta->prev = SvSTATE_hv (prev_sv); 1974 ta->prev = SvSTATE_hv (prev_sv);
… …
1654static void 1985static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1986prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{ 1987{
1657 for (;;) 1988 for (;;)
1658 { 1989 {
1659 SV *next_sv = coro_deq (aTHX); 1990 struct coro *next = coro_deq (aTHX);
1660 1991
1661 if (expect_true (next_sv)) 1992 if (ecb_expect_true (next))
1662 { 1993 {
1663 struct coro *next = SvSTATE_hv (next_sv);
1664
1665 /* cannot transfer to destroyed coros, skip and look for next */ 1994 /* cannot transfer to destroyed coros, skip and look for next */
1666 if (expect_false (next->flags & CF_DESTROYED)) 1995 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ 1996 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1668 else 1997 else
1669 { 1998 {
1670 next->flags &= ~CF_READY; 1999 next->flags &= ~CF_READY;
1671 --coro_nready; 2000 --coro_nready;
1672 2001
… …
1678 { 2007 {
1679 /* nothing to schedule: call the idle handler */ 2008 /* nothing to schedule: call the idle handler */
1680 if (SvROK (sv_idle) 2009 if (SvROK (sv_idle)
1681 && SvOBJECT (SvRV (sv_idle))) 2010 && SvOBJECT (SvRV (sv_idle)))
1682 { 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
1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ 2032 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1684 api_ready (aTHX_ SvRV (sv_idle)); 2033 api_ready (aTHX_ SvRV (sv_idle));
1685 --coro_nready; 2034 --coro_nready;
1686 } 2035 }
1687 else 2036 else
1688 { 2037 {
2038 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1689 dSP; 2039 dSP;
1690 2040
1691 ENTER; 2041 ENTER;
1692 SAVETMPS; 2042 SAVETMPS;
1693 2043
… …
1700 } 2050 }
1701 } 2051 }
1702 } 2052 }
1703} 2053}
1704 2054
1705INLINE void 2055ecb_inline void
1706prepare_cede (pTHX_ struct coro_transfer_args *ta) 2056prepare_cede (pTHX_ struct coro_transfer_args *ta)
1707{ 2057{
1708 api_ready (aTHX_ coro_current); 2058 api_ready (aTHX_ coro_current);
1709 prepare_schedule (aTHX_ ta); 2059 prepare_schedule (aTHX_ ta);
1710} 2060}
1711 2061
1712INLINE void 2062ecb_inline void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{ 2064{
1715 SV *prev = SvRV (coro_current); 2065 SV *prev = SvRV (coro_current);
1716 2066
1717 if (coro_nready) 2067 if (coro_nready)
… …
1747{ 2097{
1748 struct coro_transfer_args ta; 2098 struct coro_transfer_args ta;
1749 2099
1750 prepare_cede (aTHX_ &ta); 2100 prepare_cede (aTHX_ &ta);
1751 2101
1752 if (expect_true (ta.prev != ta.next)) 2102 if (ecb_expect_true (ta.prev != ta.next))
1753 { 2103 {
1754 TRANSFER (ta, 1); 2104 TRANSFER (ta, 1);
1755 return 1; 2105 return 1;
1756 } 2106 }
1757 else 2107 else
… …
1800 coro->slot->runops = RUNOPS_DEFAULT; 2150 coro->slot->runops = RUNOPS_DEFAULT;
1801 } 2151 }
1802} 2152}
1803 2153
1804static void 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
1805coro_call_on_destroy (pTHX_ struct coro *coro) 2231coro_call_on_destroy (pTHX_ struct coro *coro)
1806{ 2232{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); 2233 AV *od = coro->on_destroy;
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809 2234
1810 if (on_destroyp) 2235 if (!od)
1811 { 2236 return;
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813 2237
2238 coro->on_destroy = 0;
2239 sv_2mortal ((SV *)od);
2240
1814 while (AvFILLp (on_destroy) >= 0) 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
1815 { 2249 {
1816 dSP; /* don't disturb outer sp */ 2250 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP); 2251 PUSHMARK (SP);
1820 2252
1821 if (statusp) 2253 if (coro->status)
1822 { 2254 {
1823 int i; 2255 PUTBACK;
1824 AV *status = (AV *)SvRV (*statusp); 2256 coro_push_av (aTHX_ coro->status, G_ARRAY);
1825 EXTEND (SP, AvFILLp (status) + 1); 2257 SPAGAIN;
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 } 2258 }
1830 2259
1831 PUTBACK; 2260 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); 2261 call_sv (cb, G_VOID | G_DISCARD);
1833 } 2262 }
1834 } 2263 }
1835} 2264}
1836 2265
1837static void 2266static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2267coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1839{ 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 {
1840 int i; 2282 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843 2283
1844 av_extend (av, items - 1); 2284 av_extend (av, items - 1);
2285
1845 for (i = 0; i < items; ++i) 2286 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i])); 2287 av_push (av, SvREFCNT_inc_NN (arg [i]));
2288 }
2289}
1847 2290
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); 2291static void
1849 2292slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2293{
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ 2294 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager); 2295 api_ready (aTHX_ sv_manager);
1852 2296
1853 frame->prepare = prepare_schedule; 2297 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat; 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;
1855} 2409}
1856 2410
1857/*****************************************************************************/ 2411/*****************************************************************************/
1858/* async pool handler */ 2412/* async pool handler */
1859 2413
… …
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2444slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{ 2445{
1892 HV *hv = (HV *)SvRV (coro_current); 2446 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv); 2447 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894 2448
1895 if (expect_true (coro->saved_deffh)) 2449 if (ecb_expect_true (coro->saved_deffh))
1896 { 2450 {
1897 /* subsequent iteration */ 2451 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2452 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0; 2453 coro->saved_deffh = 0;
1900 2454
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2455 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2456 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 { 2457 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2458 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1905 coro->invoke_av = newAV (); 2459 return;
1906
1907 frame->prepare = prepare_nop;
1908 } 2460 }
1909 else 2461 else
1910 { 2462 {
1911 av_clear (GvAV (PL_defgv)); 2463 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2464 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913 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
1914 coro->prio = 0; 2473 coro->prio = 0;
1915 2474
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2475 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0); 2476 api_trace (aTHX_ coro_current, 0);
1918 2477
1919 frame->prepare = prepare_schedule; 2478 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv)); 2479 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 } 2480 }
… …
1937 2496
1938static void 2497static void
1939coro_rouse_callback (pTHX_ CV *cv) 2498coro_rouse_callback (pTHX_ CV *cv)
1940{ 2499{
1941 dXSARGS; 2500 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG; 2501 SV *data = (SV *)S_GENSUB_ARG;
1943 2502
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2503 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 { 2504 {
1946 /* first call, set args */ 2505 /* first call, set args */
2506 SV *coro = SvRV (data);
1947 AV *av = newAV (); 2507 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949 2508
1950 SvRV_set (data, (SV *)av); 2509 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953 2510
1954 /* better take a full copy of the arguments */ 2511 /* better take a full copy of the arguments */
1955 while (items--) 2512 while (items--)
1956 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);
1957 } 2517 }
1958 2518
1959 XSRETURN_EMPTY; 2519 XSRETURN_EMPTY;
1960} 2520}
1961 2521
1962static int 2522static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2523slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{ 2524{
1965 SV *data = (SV *)frame->data; 2525 SV *data = (SV *)frame->data;
1966 2526
1967 if (CORO_THROW) 2527 if (CORO_THROW)
1968 return 0; 2528 return 0;
1969 2529
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2530 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1; 2531 return 1;
… …
1978 2538
1979 EXTEND (SP, AvFILLp (av) + 1); 2539 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i) 2540 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2541 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982 2542
1983 /* 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 */
1984 AvFILLp (av) = -1; 2544 AvFILLp (av) = -1;
1985 av_undef (av); 2545 av_undef (av);
1986 2546
1987 PUTBACK; 2547 PUTBACK;
1988 } 2548 }
… …
2007 cb = sv_2mortal (coro->rouse_cb); 2567 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0; 2568 coro->rouse_cb = 0;
2009 } 2569 }
2010 2570
2011 if (!SvROK (cb) 2571 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV 2572 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2573 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,"); 2574 croak ("Coro::rouse_wait called with illegal callback argument,");
2015 2575
2016 { 2576 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2577 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG; 2578 SV *data = (SV *)S_GENSUB_ARG;
2019 2579
2020 frame->data = (void *)data; 2580 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2581 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait; 2582 frame->check = slf_check_rouse_wait;
2023 } 2583 }
… …
2027coro_new_rouse_cb (pTHX) 2587coro_new_rouse_cb (pTHX)
2028{ 2588{
2029 HV *hv = (HV *)SvRV (coro_current); 2589 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv); 2590 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv); 2591 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2592 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2033 2593
2034 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);
2035 SvREFCNT_dec (data); /* magicext increases the refcount */ 2595 SvREFCNT_dec (data); /* magicext increases the refcount */
2036 2596
2037 SvREFCNT_dec (coro->rouse_cb); 2597 SvREFCNT_dec (coro->rouse_cb);
… …
2134static void 2694static void
2135slf_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)
2136{ 2696{
2137 frame->prepare = prepare_cede_notself; 2697 frame->prepare = prepare_cede_notself;
2138 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);
2139} 2718}
2140 2719
2141/* 2720/*
2142 * these not obviously related functions are all rolled into one 2721 * these not obviously related functions are all rolled into one
2143 * 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
… …
2150 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 */
2151 2730
2152 /* 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 */
2153 /* the latter happens when a new coro has been started */ 2732 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */ 2733 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare)) 2734 if (ecb_expect_true (!slf_frame.prepare))
2156 { 2735 {
2157 /* first iteration */ 2736 /* first iteration */
2158 dSP; 2737 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1; 2738 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */ 2739 int items = SP - arg; /* args without function object */
… …
2201 while (slf_frame.check (aTHX_ &slf_frame)); 2780 while (slf_frame.check (aTHX_ &slf_frame));
2202 2781
2203 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 */
2204 2783
2205 /* exception handling */ 2784 /* exception handling */
2206 if (expect_false (CORO_THROW)) 2785 if (ecb_expect_false (CORO_THROW))
2207 { 2786 {
2208 SV *exception = sv_2mortal (CORO_THROW); 2787 SV *exception = sv_2mortal (CORO_THROW);
2209 2788
2210 CORO_THROW = 0; 2789 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception); 2790 sv_setsv (ERRSV, exception);
2212 croak (0); 2791 croak (0);
2213 } 2792 }
2214 2793
2215 /* return value handling - mostly like entersub */ 2794 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */ 2795 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR) 2796 if (GIMME_V == G_SCALAR
2797 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2218 { 2798 {
2219 dSP; 2799 dSP;
2220 SV **bot = PL_stack_base + checkmark; 2800 SV **bot = PL_stack_base + checkmark;
2221 2801
2222 if (sp == bot) /* too few, push undef */ 2802 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef; 2803 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */ 2804 else /* too many, take last one */
2225 bot [1] = *sp; 2805 bot [1] = *sp;
2226 2806
2227 SP = bot + 1; 2807 SP = bot + 1;
2228 2808
2229 PUTBACK; 2809 PUTBACK;
… …
2262 if (PL_op->op_flags & OPf_STACKED) 2842 if (PL_op->op_flags & OPf_STACKED)
2263 { 2843 {
2264 if (items > slf_arga) 2844 if (items > slf_arga)
2265 { 2845 {
2266 slf_arga = items; 2846 slf_arga = items;
2267 free (slf_argv); 2847 Safefree (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *)); 2848 New (0, slf_argv, slf_arga, SV *);
2269 } 2849 }
2270 2850
2271 slf_argc = items; 2851 slf_argc = items;
2272 2852
2273 for (i = 0; i < items; ++i) 2853 for (i = 0; i < items; ++i)
… …
2278 2858
2279 PL_op->op_ppaddr = pp_slf; 2859 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ 2860 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281 2861
2282 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);
2283} 3002}
2284 3003
2285/*****************************************************************************/ 3004/*****************************************************************************/
2286/* PerlIO::cede */ 3005/* PerlIO::cede */
2287 3006
… …
2289{ 3008{
2290 PerlIOBuf base; 3009 PerlIOBuf base;
2291 NV next, every; 3010 NV next, every;
2292} PerlIOCede; 3011} PerlIOCede;
2293 3012
2294static IV 3013static IV ecb_cold
2295PerlIOCede_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)
2296{ 3015{
2297 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3016 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2298 3017
2299 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3018 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2300 self->next = nvtime () + self->every; 3019 self->next = nvtime () + self->every;
2301 3020
2302 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3021 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2303} 3022}
2304 3023
2305static SV * 3024static SV * ecb_cold
2306PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3025PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2307{ 3026{
2308 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3027 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2309 3028
2310 return newSVnv (self->every); 3029 return newSVnv (self->every);
… …
2361/* Coro::Semaphore & Coro::Signal */ 3080/* Coro::Semaphore & Coro::Signal */
2362 3081
2363static SV * 3082static SV *
2364coro_waitarray_new (pTHX_ int count) 3083coro_waitarray_new (pTHX_ int count)
2365{ 3084{
2366 /* 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 */
2367 AV *av = newAV (); 3086 AV *av = newAV ();
2368 SV **ary; 3087 SV **ary;
2369 3088
2370 /* unfortunately, building manually saves memory */ 3089 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *); 3090 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary; 3091 AvALLOC (av) = ary;
3092#if PERL_VERSION_ATLEAST (5,10,0)
2373 /*AvARRAY (av) = ary;*/ 3093 AvARRAY (av) = ary;
3094#else
2374 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
2375 AvMAX (av) = 1; 3099 AvMAX (av) = 1;
2376 AvFILLp (av) = 0; 3100 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count); 3101 ary [0] = newSViv (count);
2378 3102
2379 return newRV_noinc ((SV *)av); 3103 return newRV_noinc ((SV *)av);
… …
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3136 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK; 3137 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3138 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 } 3139 }
2416 3140
2417 SvREFCNT_dec (cb); 3141 SvREFCNT_dec_NN (cb);
2418 } 3142 }
2419} 3143}
2420 3144
2421static void 3145static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3146coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2423{ 3147{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3148 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3149 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2426} 3150}
2427 3151
2428static int 3152static int
2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3153slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2430{ 3154{
2431 AV *av = (AV *)frame->data; 3155 AV *av = (AV *)frame->data;
2432 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;
2433 3160
2434 /* 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 */
2435 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
2436 return 0; 3167 return 0;
3168 }
2437 else if (SvIVX (count_sv) > 0) 3169 else if (SvIVX (count_sv) > 0)
2438 { 3170 {
2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire) 3171 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3172 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else 3173 else
2444 coro_semaphore_adjust (aTHX_ av, 0); 3174 coro_semaphore_adjust (aTHX_ av, 0);
2445 3175
… …
2449 { 3179 {
2450 int i; 3180 int i;
2451 /* 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 */
2452 /* 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 */
2453 /* this avoids some degenerate memory usage cases */ 3183 /* this avoids some degenerate memory usage cases */
2454 3184 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current)) 3185 if (AvARRAY (av)[i] == coro_hv)
2457 return 1; 3186 return 1;
2458 3187
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3188 av_push (av, SvREFCNT_inc (coro_hv));
2460 return 1; 3189 return 1;
2461 } 3190 }
2462} 3191}
2463 3192
2464static int 3193static int
… …
2487 { 3216 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3217 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489 3218
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3219 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule; 3220 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */ 3221 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3222 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3223 frame->destroy = coro_semaphore_destroy;
2496 } 3224 }
2497} 3225}
2498 3226
2499static void 3227static void
2500slf_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)
… …
2508{ 3236{
2509 if (items >= 2) 3237 if (items >= 2)
2510 { 3238 {
2511 /* callback form */ 3239 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]); 3240 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3241 SV *cb_cv = s_get_cv_croak (arg [1]);
2514 3242
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3243 av_push (av, SvREFCNT_inc_NN (cb_cv));
2516 3244
2517 if (SvIVX (AvARRAY (av)[0]) > 0) 3245 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0); 3246 coro_semaphore_adjust (aTHX_ av, 0);
2519 3247
2520 frame->prepare = prepare_nop; 3248 frame->prepare = prepare_nop;
… …
2544 AvARRAY (av)[0] = AvARRAY (av)[1]; 3272 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb; 3273 AvARRAY (av)[1] = cb;
2546 3274
2547 cb = av_shift (av); 3275 cb = av_shift (av);
2548 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 {
2549 api_ready (aTHX_ cb); 3287 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */ 3288 sv_setiv (cb, 0); /* signal waiter */
3289 }
3290
2551 SvREFCNT_dec (cb); 3291 SvREFCNT_dec_NN (cb);
2552 3292
2553 --count; 3293 --count;
2554 } 3294 }
2555} 3295}
2556 3296
… …
2564static void 3304static void
2565slf_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)
2566{ 3306{
2567 AV *av = (AV *)SvRV (arg [0]); 3307 AV *av = (AV *)SvRV (arg [0]);
2568 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
2569 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]))
2570 { 3321 {
2571 SvIVX (AvARRAY (av)[0]) = 0; 3322 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop; 3323 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop; 3324 frame->check = slf_check_nop;
2574 } 3325 }
2575 else 3326 else
2576 { 3327 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3328 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2578 3329
2579 av_push (av, waiter); 3330 av_push (av, waiter);
2580 3331
2581 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 */
2582 frame->prepare = prepare_schedule; 3333 frame->prepare = prepare_schedule;
… …
2600 3351
2601static void 3352static void
2602coro_aio_callback (pTHX_ CV *cv) 3353coro_aio_callback (pTHX_ CV *cv)
2603{ 3354{
2604 dXSARGS; 3355 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG; 3356 AV *state = (AV *)S_GENSUB_ARG;
2606 SV *coro = av_pop (state); 3357 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state)); 3358 SV *data_sv = newSV (sizeof (struct io_state));
2608 3359
2609 av_extend (state, items - 1); 3360 av_extend (state, items - 1);
2610 3361
… …
2630 } 3381 }
2631 3382
2632 av_push (state, data_sv); 3383 av_push (state, data_sv);
2633 3384
2634 api_ready (aTHX_ coro); 3385 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro); 3386 SvREFCNT_dec_NN (coro);
2636 SvREFCNT_dec ((AV *)state); 3387 SvREFCNT_dec_NN ((AV *)state);
2637} 3388}
2638 3389
2639static int 3390static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3391slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{ 3392{
… …
2646 /* it quickly returns */ 3397 /* it quickly returns */
2647 if (CORO_THROW) 3398 if (CORO_THROW)
2648 return 0; 3399 return 0;
2649 3400
2650 /* one element that is an RV? repeat! */ 3401 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3402 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2652 return 1; 3403 return 1;
2653 3404
2654 /* restore status */ 3405 /* restore status */
2655 { 3406 {
2656 SV *data_sv = av_pop (state); 3407 SV *data_sv = av_pop (state);
… …
2659 errno = data->errorno; 3410 errno = data->errorno;
2660 PL_laststype = data->laststype; 3411 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval; 3412 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache; 3413 PL_statcache = data->statcache;
2663 3414
2664 SvREFCNT_dec (data_sv); 3415 SvREFCNT_dec_NN (data_sv);
2665 } 3416 }
2666 3417
2667 /* push result values */ 3418 /* push result values */
2668 { 3419 {
2669 dSP; 3420 dSP;
… …
2695 dSP; 3446 dSP;
2696 3447
2697 static SV *prio_cv; 3448 static SV *prio_cv;
2698 static SV *prio_sv; 3449 static SV *prio_sv;
2699 3450
2700 if (expect_false (!prio_cv)) 3451 if (ecb_expect_false (!prio_cv))
2701 { 3452 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3453 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0); 3454 prio_sv = newSViv (0);
2704 } 3455 }
2705 3456
… …
2724 3475
2725 for (i = 0; i < items; ++i) 3476 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]); 3477 PUSHs (arg [i]);
2727 3478
2728 /* now push the callback closure */ 3479 /* now push the callback closure */
2729 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))));
2730 3481
2731 /* now call the AIO function - we assume our request is uncancelable */ 3482 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK; 3483 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD); 3484 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 } 3485 }
2735 3486
2736 /* 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 */
2737 frame->data = (void *)state; 3488 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule; 3489 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req; 3490 frame->check = slf_check_aio_req;
2740} 3491}
2741 3492
… …
2753 3504
2754#if CORO_CLONE 3505#if CORO_CLONE
2755# include "clone.c" 3506# include "clone.c"
2756#endif 3507#endif
2757 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
2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3634MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2759 3635
2760PROTOTYPES: DISABLE 3636PROTOTYPES: DISABLE
2761 3637
2762BOOT: 3638BOOT:
2763{ 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"
2764#ifdef USE_ITHREADS 3642#ifdef USE_ITHREADS
2765# if CORO_PTHREAD 3643# if CORO_PTHREAD
2766 coro_thx = PERL_GET_CONTEXT; 3644 coro_thx = PERL_GET_CONTEXT;
2767# endif 3645# endif
2768#endif 3646#endif
2769 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;
2770 3653
2771 cctx_current = cctx_new_empty (); 3654 cctx_current = cctx_new_empty ();
2772 3655
2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3656 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3657 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2775 3658
2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3659 {
2777 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3660 /*
2778 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 }
2779 3683
2780 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2781 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));
2782 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));
2783 3686
2784 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3687 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
2785 3688
… …
2814 coroapi.prepare_nop = prepare_nop; 3717 coroapi.prepare_nop = prepare_nop;
2815 coroapi.prepare_schedule = prepare_schedule; 3718 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede; 3719 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself; 3720 coroapi.prepare_cede_notself = prepare_cede_notself;
2818 3721
2819 { 3722 time_init (aTHX);
2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2821 3723
2822 if (!svp) croak ("Time::HiRes is required");
2823 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2824
2825 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2826 }
2827
2828 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
2829} 3730}
2830 3731
2831SV * 3732SV *
2832new (char *klass, ...) 3733new (SV *klass, ...)
2833 ALIAS: 3734 ALIAS:
2834 Coro::new = 1 3735 Coro::new = 1
2835 CODE: 3736 CODE:
2836{ 3737 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2837 struct coro *coro; 3738 OUTPUT:
2838 MAGIC *mg;
2839 HV *hv;
2840 CV *cb;
2841 int i;
2842
2843 if (items > 1)
2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2856
2857 Newz (0, coro, 1, struct coro);
2858 coro->args = newAV ();
2859 coro->flags = CF_NEW;
2860
2861 if (coro_first) coro_first->prev = coro;
2862 coro->next = coro_first;
2863 coro_first = coro;
2864
2865 coro->hv = hv = newHV ();
2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2867 mg->mg_flags |= MGf_DUP;
2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2869
2870 if (items > 1)
2871 {
2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
2882 for (i = 2; i < items; i++)
2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
2885}
2886 OUTPUT:
2887 RETVAL 3739 RETVAL
2888 3740
2889void 3741void
2890transfer (...) 3742transfer (...)
2891 PROTOTYPE: $$ 3743 PROTOTYPE: $$
2892 CODE: 3744 CODE:
2893 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3745 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2894 3746
2895bool
2896_destroy (SV *coro_sv)
2897 CODE:
2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2899 OUTPUT:
2900 RETVAL
2901
2902void
2903_exit (int code)
2904 PROTOTYPE: $
2905 CODE:
2906 _exit (code);
2907
2908SV * 3747SV *
2909clone (Coro::State coro) 3748clone (Coro::State coro)
2910 CODE: 3749 CODE:
2911{ 3750{
2912#if CORO_CLONE 3751#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro); 3752 struct coro *ncoro = coro_clone (aTHX_ coro);
2914 MAGIC *mg; 3753 MAGIC *mg;
2915 /* TODO: too much duplication */ 3754 /* TODO: too much duplication */
2916 ncoro->hv = newHV (); 3755 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); 3756 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP; 3757 mg->mg_flags |= MGf_DUP;
… …
2966void 3805void
2967list () 3806list ()
2968 PROTOTYPE: 3807 PROTOTYPE:
2969 PPCODE: 3808 PPCODE:
2970{ 3809{
2971 struct coro *coro; 3810 struct coro *coro;
2972 for (coro = coro_first; coro; coro = coro->next) 3811 for (coro = coro_first; coro; coro = coro->next)
2973 if (coro->hv) 3812 if (coro->hv)
2974 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3813 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2975} 3814}
2976 3815
… …
2980 eval = 1 3819 eval = 1
2981 CODE: 3820 CODE:
2982{ 3821{
2983 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3822 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2984 { 3823 {
2985 struct coro temp; 3824 struct coro *current = SvSTATE_current;
3825 struct CoroSLF slf_save;
2986 3826
2987 if (!(coro->flags & CF_RUNNING)) 3827 if (current != coro)
2988 { 3828 {
2989 PUTBACK; 3829 PUTBACK;
2990 save_perl (aTHX_ &temp); 3830 save_perl (aTHX_ current);
2991 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;
2992 } 3842 }
2993 3843
2994 {
2995 dSP;
2996 ENTER;
2997 SAVETMPS;
2998 PUTBACK;
2999 PUSHSTACK; 3844 PUSHSTACK;
3845
3000 PUSHMARK (SP); 3846 PUSHMARK (SP);
3847 PUTBACK;
3001 3848
3002 if (ix) 3849 if (ix)
3003 eval_sv (coderef, 0); 3850 eval_sv (coderef, 0);
3004 else 3851 else
3005 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3852 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3006 3853
3007 POPSTACK; 3854 POPSTACK;
3008 SPAGAIN; 3855 SPAGAIN;
3009 FREETMPS;
3010 LEAVE;
3011 PUTBACK;
3012 }
3013 3856
3014 if (!(coro->flags & CF_RUNNING)) 3857 if (current != coro)
3015 { 3858 {
3859 PUTBACK;
3860 slf_frame = slf_save;
3016 save_perl (aTHX_ coro); 3861 save_perl (aTHX_ coro);
3017 load_perl (aTHX_ &temp); 3862 load_perl (aTHX_ current);
3018 SPAGAIN; 3863 SPAGAIN;
3019 } 3864 }
3020 } 3865 }
3021} 3866}
3022 3867
… …
3025 PROTOTYPE: $ 3870 PROTOTYPE: $
3026 ALIAS: 3871 ALIAS:
3027 is_ready = CF_READY 3872 is_ready = CF_READY
3028 is_running = CF_RUNNING 3873 is_running = CF_RUNNING
3029 is_new = CF_NEW 3874 is_new = CF_NEW
3030 is_destroyed = CF_DESTROYED 3875 is_destroyed = CF_ZOMBIE
3876 is_zombie = CF_ZOMBIE
3877 is_suspended = CF_SUSPENDED
3031 CODE: 3878 CODE:
3032 RETVAL = boolSV (coro->flags & ix); 3879 RETVAL = boolSV (coro->flags & ix);
3033 OUTPUT: 3880 OUTPUT:
3034 RETVAL 3881 RETVAL
3035 3882
3036void 3883void
3037throw (Coro::State self, SV *throw = &PL_sv_undef) 3884throw (SV *self, SV *exception = &PL_sv_undef)
3038 PROTOTYPE: $;$ 3885 PROTOTYPE: $;$
3039 CODE: 3886 CODE:
3040{ 3887{
3888 struct coro *coro = SvSTATE (self);
3041 struct coro *current = SvSTATE_current; 3889 struct coro *current = SvSTATE_current;
3042 SV **throwp = self == current ? &CORO_THROW : &self->except; 3890 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
3043 SvREFCNT_dec (*throwp); 3891 SvREFCNT_dec (*exceptionp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3892 SvGETMAGIC (exception);
3893 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3894
3895 api_ready (aTHX_ self);
3045} 3896}
3046 3897
3047void 3898void
3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3899api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$ 3900 PROTOTYPE: $;$
… …
3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3951 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3101 3952
3102 SV *tmp = *src; *src = *dst; *dst = tmp; 3953 SV *tmp = *src; *src = *dst; *dst = tmp;
3103 } 3954 }
3104 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
3105 4045
3106MODULE = Coro::State PACKAGE = Coro 4046MODULE = Coro::State PACKAGE = Coro
3107 4047
3108BOOT: 4048BOOT:
3109{ 4049{
3110 int i; 4050 if (SVt_LAST > 32)
4051 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
3111 4052
3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4053 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4054 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 4055 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); 4056 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); 4057 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); 4058 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); 4059 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); 4060 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121 4061
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4062 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4063 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); 4064 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); 4065 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3126 4066
3127 coro_stash = gv_stashpv ("Coro", TRUE); 4067 coro_stash = gv_stashpv ("Coro", TRUE);
3128 4068
3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4069 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4070 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3131 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4071 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3132 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4072 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3133 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4073 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3134 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4074 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3135
3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3137 coro_ready[i] = newAV ();
3138 4075
3139 { 4076 {
3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4077 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3141 4078
3142 coroapi.schedule = api_schedule; 4079 coroapi.schedule = api_schedule;
… …
3146 coroapi.ready = api_ready; 4083 coroapi.ready = api_ready;
3147 coroapi.is_ready = api_is_ready; 4084 coroapi.is_ready = api_is_ready;
3148 coroapi.nready = coro_nready; 4085 coroapi.nready = coro_nready;
3149 coroapi.current = coro_current; 4086 coroapi.current = coro_current;
3150 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
3151 /*GCoroAPI = &coroapi;*/ 4092 /*GCoroAPI = &coroapi;*/
3152 sv_setiv (sv, (IV)&coroapi); 4093 sv_setiv (sv, (IV)&coroapi);
3153 SvREADONLY_on (sv); 4094 SvREADONLY_on (sv);
3154 } 4095 }
3155} 4096}
3156 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
3157void 4123void
3158terminate (...) 4124terminate (...)
3159 CODE: 4125 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate); 4126 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161 4127
3162void 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
4137void
3163schedule (...) 4138schedule (...)
3164 CODE: 4139 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4140 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166 4141
3167void 4142void
… …
3183cede_notself (...) 4158cede_notself (...)
3184 CODE: 4159 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself); 4160 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186 4161
3187void 4162void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
3192
3193void
3194_set_current (SV *current) 4163_set_current (SV *current)
3195 PROTOTYPE: $ 4164 PROTOTYPE: $
3196 CODE: 4165 CODE:
3197 SvREFCNT_dec (SvRV (coro_current)); 4166 SvREFCNT_dec_NN (SvRV (coro_current));
3198 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4167 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3199 4168
3200void 4169void
3201_set_readyhook (SV *hook) 4170_set_readyhook (SV *hook)
3202 PROTOTYPE: $ 4171 PROTOTYPE: $
3203 CODE: 4172 CODE:
3204 SvREFCNT_dec (coro_readyhook); 4173 SvREFCNT_dec (coro_readyhook);
4174 SvGETMAGIC (hook);
4175 if (SvOK (hook))
4176 {
3205 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 }
3206 4185
3207int 4186int
3208prio (Coro::State coro, int newprio = 0) 4187prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$ 4188 PROTOTYPE: $;$
3210 ALIAS: 4189 ALIAS:
… …
3216 if (items > 1) 4195 if (items > 1)
3217 { 4196 {
3218 if (ix) 4197 if (ix)
3219 newprio = coro->prio - newprio; 4198 newprio = coro->prio - newprio;
3220 4199
3221 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4200 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3222 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4201 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3223 4202
3224 coro->prio = newprio; 4203 coro->prio = newprio;
3225 } 4204 }
3226} 4205}
3227 OUTPUT: 4206 OUTPUT:
… …
3242 RETVAL = coro_nready; 4221 RETVAL = coro_nready;
3243 OUTPUT: 4222 OUTPUT:
3244 RETVAL 4223 RETVAL
3245 4224
3246void 4225void
4226suspend (Coro::State self)
4227 PROTOTYPE: $
4228 CODE:
4229 self->flags |= CF_SUSPENDED;
4230
4231void
4232resume (Coro::State self)
4233 PROTOTYPE: $
4234 CODE:
4235 self->flags &= ~CF_SUSPENDED;
4236
4237void
3247_pool_handler (...) 4238_pool_handler (...)
3248 CODE: 4239 CODE:
3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 4240 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3250 4241
3251void 4242void
… …
3262 for (i = 1; i < items; ++i) 4253 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i))); 4254 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264 4255
3265 if ((SV *)hv == &PL_sv_undef) 4256 if ((SV *)hv == &PL_sv_undef)
3266 { 4257 {
3267 PUSHMARK (SP); 4258 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4259 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4260 SvREFCNT_dec_NN (sv);
3276 } 4261 }
3277 4262
3278 { 4263 {
3279 struct coro *coro = SvSTATE_hv (hv); 4264 struct coro *coro = SvSTATE_hv (hv);
3280 4265
… …
3287 api_ready (aTHX_ (SV *)hv); 4272 api_ready (aTHX_ (SV *)hv);
3288 4273
3289 if (GIMME_V != G_VOID) 4274 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4275 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else 4276 else
3292 SvREFCNT_dec (hv); 4277 SvREFCNT_dec_NN (hv);
3293} 4278}
3294 4279
3295SV * 4280SV *
3296rouse_cb () 4281rouse_cb ()
3297 PROTOTYPE: 4282 PROTOTYPE:
… …
3304rouse_wait (...) 4289rouse_wait (...)
3305 PROTOTYPE: ;$ 4290 PROTOTYPE: ;$
3306 PPCODE: 4291 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4292 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3308 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
3309 4319
3310MODULE = Coro::State PACKAGE = PerlIO::cede 4320MODULE = Coro::State PACKAGE = PerlIO::cede
3311 4321
3312BOOT: 4322BOOT:
3313 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4323 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3316MODULE = Coro::State PACKAGE = Coro::Semaphore 4326MODULE = Coro::State PACKAGE = Coro::Semaphore
3317 4327
3318SV * 4328SV *
3319new (SV *klass, SV *count = 0) 4329new (SV *klass, SV *count = 0)
3320 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
3321 RETVAL = sv_bless ( 4342 RETVAL = sv_bless (
3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4343 coro_waitarray_new (aTHX_ semcnt),
3323 GvSTASH (CvGV (cv)) 4344 GvSTASH (CvGV (cv))
3324 ); 4345 );
4346}
3325 OUTPUT: 4347 OUTPUT:
3326 RETVAL 4348 RETVAL
3327 4349
3328# helper for Coro::Channel 4350# helper for Coro::Channel and others
3329SV * 4351SV *
3330_alloc (int count) 4352_alloc (int count)
3331 CODE: 4353 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count); 4354 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT: 4355 OUTPUT:
… …
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4361 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT: 4362 OUTPUT:
3341 RETVAL 4363 RETVAL
3342 4364
3343void 4365void
3344up (SV *self, int adjust = 1) 4366up (SV *self)
3345 ALIAS:
3346 adjust = 1
3347 CODE: 4367 CODE:
4368 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4369
4370void
4371adjust (SV *self, int adjust)
4372 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4373 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3349 4374
3350void 4375void
3351down (...) 4376down (...)
3352 CODE: 4377 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4378 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3375 XSRETURN_NO; 4400 XSRETURN_NO;
3376} 4401}
3377 4402
3378void 4403void
3379waiters (SV *self) 4404waiters (SV *self)
3380 PPCODE: 4405 PPCODE:
3381{ 4406{
3382 AV *av = (AV *)SvRV (self); 4407 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1; 4408 int wcount = AvFILLp (av) + 1 - 1;
3384 4409
3385 if (GIMME_V == G_SCALAR) 4410 if (GIMME_V == G_SCALAR)
… …
3391 for (i = 1; i <= wcount; ++i) 4416 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4417 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 } 4418 }
3394} 4419}
3395 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
3396MODULE = Coro::State PACKAGE = Coro::Signal 4437MODULE = Coro::State PACKAGE = Coro::Signal
3397 4438
3398SV * 4439SV *
3399new (SV *klass) 4440new (SV *klass)
3400 CODE: 4441 CODE:
… …
3412 4453
3413void 4454void
3414broadcast (SV *self) 4455broadcast (SV *self)
3415 CODE: 4456 CODE:
3416{ 4457{
3417 AV *av = (AV *)SvRV (self); 4458 AV *av = (AV *)SvRV (self);
3418 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4459 coro_signal_wake (aTHX_ av, AvFILLp (av));
3419} 4460}
3420 4461
3421void 4462void
3422send (SV *self) 4463send (SV *self)
… …
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4471 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3431} 4472}
3432 4473
3433IV 4474IV
3434awaited (SV *self) 4475awaited (SV *self)
3435 CODE: 4476 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4477 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT: 4478 OUTPUT:
3438 RETVAL 4479 RETVAL
3439 4480
3440 4481
… …
3445 4486
3446void 4487void
3447_schedule (...) 4488_schedule (...)
3448 CODE: 4489 CODE:
3449{ 4490{
3450 static int incede; 4491 static int incede;
3451 4492
3452 api_cede_notself (aTHX); 4493 api_cede_notself (aTHX);
3453 4494
3454 ++incede; 4495 ++incede;
3455 while (coro_nready >= incede && api_cede (aTHX)) 4496 while (coro_nready >= incede && api_cede (aTHX))
… …
3471 4512
3472void 4513void
3473_register (char *target, char *proto, SV *req) 4514_register (char *target, char *proto, SV *req)
3474 CODE: 4515 CODE:
3475{ 4516{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req); 4517 SV *req_cv = s_get_cv_croak (req);
3477 /* newXSproto doesn't return the CV on 5.8 */ 4518 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4519 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto); 4520 sv_setpv ((SV *)slf_cv, proto);
3480 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);
3481} 4522}
3482 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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