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Comparing Coro/Coro/State.xs (file contents):
Revision 1.313 by root, Thu Nov 20 03:22:59 2008 UTC vs.
Revision 1.475 by root, Tue Aug 14 16:51:38 2018 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"
7
8#if CORO_UCONTEXT
9 #define CORO_BACKEND "ucontext"
10#elif CORO_SJLJ
11 #define CORO_BACKEND "sjlj"
12#elif CORO_LINUX
13 #define CORO_BACKEND "linux"
14#elif CORO_LOSER
15 #define CORO_BACKEND "loser"
16#elif CORO_FIBER
17 #define CORO_BACKEND "fiber"
18#elif CORO_IRIX
19 #define CORO_BACKEND "irix"
20#elif CORO_ASM
21 #define CORO_BACKEND "asm"
22#elif CORO_PTHREAD
23 #define CORO_BACKEND "pthread"
24#else
25 #define CORO_BACKEND "unknown"
26#endif
2 27
3#define PERL_NO_GET_CONTEXT 28#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 29#define PERL_EXT
5 30
6#include "EXTERN.h" 31#include "EXTERN.h"
7#include "perl.h" 32#include "perl.h"
8#include "XSUB.h" 33#include "XSUB.h"
9#include "perliol.h" 34#include "perliol.h"
10 35
11#include "patchlevel.h" 36#include "schmorp.h"
12 37
38#define ECB_NO_THREADS 1
39#define ECB_NO_LIBM 1
40#include "ecb.h"
41
42#include <stddef.h>
13#include <stdio.h> 43#include <stdio.h>
14#include <errno.h> 44#include <errno.h>
15#include <assert.h> 45#include <assert.h>
16 46
17#ifdef WIN32 47#ifndef SvREFCNT_dec_NN
48 #define SvREFCNT_dec_NN(sv) SvREFCNT_dec (sv)
49#endif
50
51#ifndef SvREFCNT_inc_NN
52 #define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
53#endif
54
55#ifndef SVs_PADSTALE
56# define SVs_PADSTALE 0
57#endif
58
59#ifdef PadARRAY
60# define NEWPADAPI 1
61# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
62#else
63typedef AV PADNAMELIST;
64# if !PERL_VERSION_ATLEAST(5,8,0)
65typedef AV PADLIST;
66typedef AV PAD;
67# endif
68# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
69# define PadlistMAX(pl) AvFILLp (pl)
70# define PadlistNAMES(pl) (*PadlistARRAY (pl))
71# define PadARRAY AvARRAY
72# define PadMAX AvFILLp
73# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
74#endif
75#ifndef PadnamelistREFCNT
76# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
77#endif
78#ifndef PadnamelistREFCNT_dec
79# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
80#endif
81
82/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
83/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
84#if PERL_VERSION_ATLEAST(5,19,0)
85# define SVt_BIND SVt_IV
86#endif
87
88#if defined(_WIN32)
89# undef HAS_GETTIMEOFDAY
18# undef setjmp 90# undef setjmp
19# undef longjmp 91# undef longjmp
20# undef _exit 92# undef _exit
21# define setjmp _setjmp /* deep magic */ 93# define setjmp _setjmp /* deep magic */
22#else 94#else
23# include <inttypes.h> /* most portable stdint.h */ 95# include <inttypes.h> /* most portable stdint.h */
24#endif 96#endif
25 97
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 */ 98/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 99static int cctx_max_idle = 4;
55 100
56#define PERL_VERSION_ATLEAST(a,b,c) \ 101#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 102# 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
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 103#endif
116 104
117/* prefer perl internal functions over our own? */ 105/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 106#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 107# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 115#else
128# define dSTACKLEVEL volatile void *stacklevel 116# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 117# define STACKLEVEL ((void *)&stacklevel)
130#endif 118#endif
131 119
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 120#define IN_DESTRUCT PL_dirty
133
134#if __GNUC__ >= 3
135# define attribute(x) __attribute__(x)
136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
138#else
139# define attribute(x)
140# define expect(expr,value) (expr)
141# define INLINE static
142#endif
143
144#define expect_false(expr) expect ((expr) != 0, 0)
145#define expect_true(expr) expect ((expr) != 0, 1)
146
147#define NOINLINE attribute ((noinline))
148 121
149#include "CoroAPI.h" 122#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 123#define GCoroAPI (&coroapi) /* very sneaky */
151 124
152#ifdef USE_ITHREADS 125#ifdef USE_ITHREADS
153# if CORO_PTHREAD 126# if CORO_PTHREAD
154static void *coro_thx; 127static void *coro_thx;
155# endif 128# endif
156#endif 129#endif
157 130
131#ifdef __linux
132# include <time.h> /* for timespec */
133# include <syscall.h> /* for SYS_* */
134# ifdef SYS_clock_gettime
135# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
136# define CORO_CLOCK_MONOTONIC 1
137# define CORO_CLOCK_THREAD_CPUTIME_ID 3
138# endif
139#endif
140
141/* one off bugfix for perl 5.22 */
142#if PERL_VERSION_ATLEAST(5,22,0) && !PERL_VERSION_ATLEAST(5,24,0)
143# undef PadlistNAMES
144# define PadlistNAMES(pl) *((PADNAMELIST **)PadlistARRAY (pl))
145#endif
146
147#if PERL_VERSION_ATLEAST(5,24,0)
148# define SUB_ARGARRAY PL_curpad[0]
149#else
150# define SUB_ARGARRAY (SV *)cx->blk_sub.argarray
151#endif
152
153/* perl usually suppresses asserts. for debugging, we sometimes force it to be on */
154#if 0
155# undef NDEBUG
156# include <assert.h>
157#endif
158
158static double (*nvtime)(); /* so why doesn't it take void? */ 159static double (*nvtime)(); /* so why doesn't it take void? */
160static void (*u2time)(pTHX_ UV ret[2]);
159 161
160/* we hijack an hopefully unused CV flag for our purposes */ 162/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 163#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 164static OP *pp_slf (pTHX);
165static void slf_destroy (pTHX_ struct coro *coro);
163 166
164static U32 cctx_gen; 167static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 168static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 169static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 170static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 171static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 172static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 173static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 174
175static AV *av_destroy; /* destruction queue */
176static SV *sv_manager; /* the manager coro */
177static SV *sv_idle; /* $Coro::idle */
178
172static GV *irsgv; /* $/ */ 179static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 180static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 181static SV *rv_diehook;
175static SV *rv_warnhook; 182static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */
177 183
178/* async_pool helper stuff */ 184/* async_pool helper stuff */
179static SV *sv_pool_rss; 185static SV *sv_pool_rss;
180static SV *sv_pool_size; 186static SV *sv_pool_size;
181static SV *sv_async_pool_idle; 187static SV *sv_async_pool_idle; /* description string */
182static AV *av_async_pool; 188static AV *av_async_pool; /* idle pool */
183static SV *sv_Coro; 189static SV *sv_Coro; /* class string */
184static CV *cv_pool_handler; 190static CV *cv_pool_handler;
185static CV *cv_coro_new;
186 191
187/* Coro::AnyEvent */ 192/* Coro::AnyEvent */
188static SV *sv_activity; 193static SV *sv_activity;
189 194
195/* enable processtime/realtime profiling */
196static char enable_times;
197typedef U32 coro_ts[2];
198static coro_ts time_real, time_cpu;
199static char times_valid;
200
190static struct coro_cctx *cctx_first; 201static struct coro_cctx *cctx_first;
191static int cctx_count, cctx_idle; 202static int cctx_count, cctx_idle;
192 203
193enum { 204enum
205{
194 CC_MAPPED = 0x01, 206 CC_MAPPED = 0x01,
195 CC_NOREUSE = 0x02, /* throw this away after tracing */ 207 CC_NOREUSE = 0x02, /* throw this away after tracing */
196 CC_TRACE = 0x04, 208 CC_TRACE = 0x04,
197 CC_TRACE_SUB = 0x08, /* trace sub calls */ 209 CC_TRACE_SUB = 0x08, /* trace sub calls */
198 CC_TRACE_LINE = 0x10, /* trace each statement */ 210 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
203typedef struct coro_cctx 215typedef struct coro_cctx
204{ 216{
205 struct coro_cctx *next; 217 struct coro_cctx *next;
206 218
207 /* the stack */ 219 /* the stack */
208 void *sptr; 220 struct coro_stack stack;
209 size_t ssize;
210 221
211 /* cpu state */ 222 /* cpu state */
212 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 223 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
224#ifndef NDEBUG
213 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 225 JMPENV *idle_te; /* same as idle_sp, but for top_env */
226#endif
214 JMPENV *top_env; 227 JMPENV *top_env;
215 coro_context cctx; 228 coro_context cctx;
216 229
217 U32 gen; 230 U32 gen;
218#if CORO_USE_VALGRIND 231#if CORO_USE_VALGRIND
219 int valgrind_id; 232 int valgrind_id;
220#endif 233#endif
221 unsigned char flags; 234 unsigned char flags;
222} coro_cctx; 235} coro_cctx;
223 236
237static coro_cctx *cctx_current; /* the currently running cctx */
238
239/*****************************************************************************/
240
241static MGVTBL coro_state_vtbl;
242
224enum { 243enum
244{
225 CF_RUNNING = 0x0001, /* coroutine is running */ 245 CF_RUNNING = 0x0001, /* coroutine is running */
226 CF_READY = 0x0002, /* coroutine is ready */ 246 CF_READY = 0x0002, /* coroutine is ready */
227 CF_NEW = 0x0004, /* has never been switched to */ 247 CF_NEW = 0x0004, /* has never been switched to */
228 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 248 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
249 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
250 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
229}; 251};
230 252
231/* the structure where most of the perl state is stored, overlaid on the cxstack */ 253/* the structure where most of the perl state is stored, overlaid on the cxstack */
232typedef struct 254typedef struct
233{ 255{
234 SV *defsv;
235 AV *defav;
236 SV *errsv;
237 SV *irsgv;
238#define VAR(name,type) type name; 256 #define VARx(name,expr,type) type name;
239# include "state.h" 257 #include "state.h"
240#undef VAR
241} perl_slots; 258} perl_slots;
242 259
260/* how many context stack entries do we need for perl_slots */
243#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 261#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
244 262
245/* this is a structure representing a perl-level coroutine */ 263/* this is a structure representing a perl-level coroutine */
246struct coro { 264struct coro
265{
247 /* the C coroutine allocated to this perl coroutine, if any */ 266 /* the C coroutine allocated to this perl coroutine, if any */
248 coro_cctx *cctx; 267 coro_cctx *cctx;
268
269 /* ready queue */
270 struct coro *next_ready;
249 271
250 /* state data */ 272 /* state data */
251 struct CoroSLF slf_frame; /* saved slf frame */ 273 struct CoroSLF slf_frame; /* saved slf frame */
252 AV *mainstack; 274 AV *mainstack;
253 perl_slots *slot; /* basically the saved sp */ 275 perl_slots *slot; /* basically the saved sp */
254 276
255 CV *startcv; /* the CV to execute */ 277 CV *startcv; /* the CV to execute */
256 AV *args; /* data associated with this coroutine (initial args) */ 278 AV *args; /* data associated with this coroutine (initial args) */
257 int refcnt; /* coroutines are refcounted, yes */
258 int flags; /* CF_ flags */ 279 int flags; /* CF_ flags */
259 HV *hv; /* the perl hash associated with this coro, if any */ 280 HV *hv; /* the perl hash associated with this coro, if any */
260 void (*on_destroy)(pTHX_ struct coro *coro);
261 281
262 /* statistics */ 282 /* statistics */
263 int usecount; /* number of transfers to this coro */ 283 int usecount; /* number of transfers to this coro */
264 284
265 /* coro process data */ 285 /* coro process data */
266 int prio; 286 int prio;
267 SV *except; /* exception to be thrown */ 287 SV *except; /* exception to be thrown */
268 SV *rouse_cb; 288 SV *rouse_cb; /* last rouse callback */
289 AV *on_destroy; /* callbacks or coros to notify on destroy */
290 AV *status; /* the exit status list */
269 291
270 /* async_pool */ 292 /* async_pool */
271 SV *saved_deffh; 293 SV *saved_deffh;
272 SV *invoke_cb; 294 SV *invoke_cb;
273 AV *invoke_av; 295 AV *invoke_av;
274 296
297 /* on_enter/on_leave */
298 AV *on_enter; AV *on_enter_xs;
299 AV *on_leave; AV *on_leave_xs;
300
301 /* swap_sv */
302 AV *swap_sv;
303
304 /* times */
305 coro_ts t_cpu, t_real;
306
275 /* linked list */ 307 /* linked list */
276 struct coro *next, *prev; 308 struct coro *next, *prev;
277}; 309};
278 310
279typedef struct coro *Coro__State; 311typedef struct coro *Coro__State;
280typedef struct coro *Coro__State_or_hashref; 312typedef struct coro *Coro__State_or_hashref;
281 313
282/* the following variables are effectively part of the perl context */ 314/* the following variables are effectively part of the perl context */
283/* and get copied between struct coro and these variables */ 315/* and get copied between struct coro and these variables */
284/* the mainr easonw e don't support windows process emulation */ 316/* the main reason we don't support windows process emulation */
285static struct CoroSLF slf_frame; /* the current slf frame */ 317static struct CoroSLF slf_frame; /* the current slf frame */
286 318
287/** Coro ********************************************************************/ 319/** Coro ********************************************************************/
288 320
289#define PRIO_MAX 3 321#define CORO_PRIO_MAX 3
290#define PRIO_HIGH 1 322#define CORO_PRIO_HIGH 1
291#define PRIO_NORMAL 0 323#define CORO_PRIO_NORMAL 0
292#define PRIO_LOW -1 324#define CORO_PRIO_LOW -1
293#define PRIO_IDLE -3 325#define CORO_PRIO_IDLE -3
294#define PRIO_MIN -4 326#define CORO_PRIO_MIN -4
295 327
296/* for Coro.pm */ 328/* for Coro.pm */
297static SV *coro_current; 329static SV *coro_current;
298static SV *coro_readyhook; 330static SV *coro_readyhook;
299static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 331static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
300static CV *cv_coro_run, *cv_coro_terminate; 332static CV *cv_coro_run;
301static struct coro *coro_first; 333static struct coro *coro_first;
302#define coro_nready coroapi.nready 334#define coro_nready coroapi.nready
303 335
336/** JIT *********************************************************************/
337
338#if CORO_JIT
339 /* APPLE doesn't have mmap though */
340 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
341 #ifndef CORO_JIT_TYPE
342 #if ECB_AMD64 && CORO_JIT_UNIXY
343 #define CORO_JIT_TYPE "amd64-unix"
344 #elif __i386 && CORO_JIT_UNIXY
345 #define CORO_JIT_TYPE "x86-unix"
346 #endif
347 #endif
348#endif
349
350#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
351 #undef CORO_JIT
352#endif
353
354#if CORO_JIT
355 typedef void (*load_save_perl_slots_type)(perl_slots *);
356 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
357#endif
358
359/** Coro::Select ************************************************************/
360
361static OP *(*coro_old_pp_sselect) (pTHX);
362static SV *coro_select_select;
363
364/* horrible hack, but if it works... */
365static OP *
366coro_pp_sselect (pTHX)
367{
368 dSP;
369 PUSHMARK (SP - 4); /* fake argument list */
370 XPUSHs (coro_select_select);
371 PUTBACK;
372
373 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
374 PL_op->op_flags |= OPf_STACKED;
375 PL_op->op_private = 0;
376 return PL_ppaddr [OP_ENTERSUB](aTHX);
377}
378
379/** time stuff **************************************************************/
380
381#ifdef HAS_GETTIMEOFDAY
382
383ecb_inline void
384coro_u2time (pTHX_ UV ret[2])
385{
386 struct timeval tv;
387 gettimeofday (&tv, 0);
388
389 ret [0] = tv.tv_sec;
390 ret [1] = tv.tv_usec;
391}
392
393ecb_inline double
394coro_nvtime (void)
395{
396 struct timeval tv;
397 gettimeofday (&tv, 0);
398
399 return tv.tv_sec + tv.tv_usec * 1e-6;
400}
401
402ecb_inline void
403time_init (pTHX)
404{
405 nvtime = coro_nvtime;
406 u2time = coro_u2time;
407}
408
409#else
410
411ecb_inline void
412time_init (pTHX)
413{
414 SV **svp;
415
416 require_pv ("Time/HiRes.pm");
417
418 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
419
420 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
421 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
422
423 nvtime = INT2PTR (double (*)(), SvIV (*svp));
424
425 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
426 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
427}
428
429#endif
430
304/** lowlevel stuff **********************************************************/ 431/** lowlevel stuff **********************************************************/
305 432
306static SV * 433static SV * ecb_noinline
307coro_get_sv (pTHX_ const char *name, int create) 434coro_get_sv (pTHX_ const char *name, int create)
308{ 435{
309#if PERL_VERSION_ATLEAST (5,10,0) 436#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 437 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create); 438 get_sv (name, create);
312#endif 439#endif
313 return get_sv (name, create); 440 return get_sv (name, create);
314} 441}
315 442
316static AV * 443static AV * ecb_noinline
317coro_get_av (pTHX_ const char *name, int create) 444coro_get_av (pTHX_ const char *name, int create)
318{ 445{
319#if PERL_VERSION_ATLEAST (5,10,0) 446#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 447 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create); 448 get_av (name, create);
322#endif 449#endif
323 return get_av (name, create); 450 return get_av (name, create);
324} 451}
325 452
326static HV * 453static HV * ecb_noinline
327coro_get_hv (pTHX_ const char *name, int create) 454coro_get_hv (pTHX_ const char *name, int create)
328{ 455{
329#if PERL_VERSION_ATLEAST (5,10,0) 456#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 457 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 458 get_hv (name, create);
332#endif 459#endif
333 return get_hv (name, create); 460 return get_hv (name, create);
334} 461}
335 462
336/* may croak */ 463ecb_inline void
337INLINE CV * 464coro_times_update (void)
338coro_sv_2cv (pTHX_ SV *sv)
339{ 465{
340 HV *st; 466#ifdef coro_clock_gettime
341 GV *gvp; 467 struct timespec ts;
342 return sv_2cv (sv, &st, &gvp, 0);
343}
344 468
345static AV * 469 ts.tv_sec = ts.tv_nsec = 0;
470 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
471 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
472
473 ts.tv_sec = ts.tv_nsec = 0;
474 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
475 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
476#else
477 dTHX;
478 UV tv[2];
479
480 u2time (aTHX_ tv);
481 time_real [0] = tv [0];
482 time_real [1] = tv [1] * 1000;
483#endif
484}
485
486ecb_inline void
487coro_times_add (struct coro *c)
488{
489 c->t_real [1] += time_real [1];
490 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
491 c->t_real [0] += time_real [0];
492
493 c->t_cpu [1] += time_cpu [1];
494 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
495 c->t_cpu [0] += time_cpu [0];
496}
497
498ecb_inline void
499coro_times_sub (struct coro *c)
500{
501 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
502 c->t_real [1] -= time_real [1];
503 c->t_real [0] -= time_real [0];
504
505 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
506 c->t_cpu [1] -= time_cpu [1];
507 c->t_cpu [0] -= time_cpu [0];
508}
509
510/*****************************************************************************/
511/* magic glue */
512
513#define CORO_MAGIC_type_cv 26
514#define CORO_MAGIC_type_state PERL_MAGIC_ext
515
516#define CORO_MAGIC_NN(sv, type) \
517 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
518 ? SvMAGIC (sv) \
519 : mg_find (sv, type))
520
521#define CORO_MAGIC(sv, type) \
522 (ecb_expect_true (SvMAGIC (sv)) \
523 ? CORO_MAGIC_NN (sv, type) \
524 : 0)
525
526#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
527#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
528
529ecb_inline MAGIC *
530SvSTATEhv_p (pTHX_ SV *coro)
531{
532 MAGIC *mg;
533
534 if (ecb_expect_true (
535 SvTYPE (coro) == SVt_PVHV
536 && (mg = CORO_MAGIC_state (coro))
537 && mg->mg_virtual == &coro_state_vtbl
538 ))
539 return mg;
540
541 return 0;
542}
543
544ecb_inline struct coro *
545SvSTATE_ (pTHX_ SV *coro_sv)
546{
547 MAGIC *mg;
548
549 if (SvROK (coro_sv))
550 coro_sv = SvRV (coro_sv);
551
552 mg = SvSTATEhv_p (aTHX_ coro_sv);
553 if (!mg)
554 croak ("Coro::State object required");
555
556 return (struct coro *)mg->mg_ptr;
557}
558
559#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
560
561/* faster than SvSTATE, but expects a coroutine hv */
562#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
563#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
564
565/*****************************************************************************/
566/* padlist management and caching */
567
568ecb_inline PADLIST *
346coro_clone_padlist (pTHX_ CV *cv) 569coro_derive_padlist (pTHX_ CV *cv)
347{ 570{
348 AV *padlist = CvPADLIST (cv); 571 PADLIST *padlist = CvPADLIST (cv);
349 AV *newpadlist, *newpad; 572 PADLIST *newpadlist;
573 PADNAMELIST *padnames;
574 PAD *newpad;
575 PADOFFSET off = PadlistMAX (padlist) + 1;
350 576
351 newpadlist = newAV (); 577#if NEWPADAPI
578
579 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
580 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
581 while (!PadlistARRAY (padlist)[off - 1])
582 --off;
583
584 Perl_pad_push (aTHX_ padlist, off);
585
586 newpad = PadlistARRAY (padlist)[off];
587 PadlistARRAY (padlist)[off] = 0;
588
589#else
590
591#if PERL_VERSION_ATLEAST (5,10,0)
592 Perl_pad_push (aTHX_ padlist, off);
593#else
594 Perl_pad_push (aTHX_ padlist, off, 1);
595#endif
596
597 newpad = PadlistARRAY (padlist)[off];
598 PadlistMAX (padlist) = off - 1;
599
600#endif
601
602 newPADLIST (newpadlist);
603#if !PERL_VERSION_ATLEAST(5,15,3)
604 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
352 AvREAL_off (newpadlist); 605 AvREAL_off (newpadlist);
353#if PERL_VERSION_ATLEAST (5,10,0)
354 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
355#else
356 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
357#endif 606#endif
358 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
359 --AvFILLp (padlist);
360 607
361 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 608 /* Already extended to 2 elements by newPADLIST. */
362 av_store (newpadlist, 1, (SV *)newpad); 609 PadlistMAX (newpadlist) = 1;
610
611 padnames = PadlistNAMES (padlist);
612 ++PadnamelistREFCNT (padnames);
613 PadlistNAMES (newpadlist) = padnames;
614
615 PadlistARRAY (newpadlist)[1] = newpad;
363 616
364 return newpadlist; 617 return newpadlist;
365} 618}
366 619
367static void 620ecb_inline void
368free_padlist (pTHX_ AV *padlist) 621free_padlist (pTHX_ PADLIST *padlist)
369{ 622{
370 /* may be during global destruction */ 623 /* may be during global destruction */
371 if (SvREFCNT (padlist)) 624 if (!IN_DESTRUCT)
372 { 625 {
373 I32 i = AvFILLp (padlist); 626 I32 i = PadlistMAX (padlist);
374 while (i >= 0) 627
628 while (i > 0) /* special-case index 0 */
375 { 629 {
376 SV **svp = av_fetch (padlist, i--, FALSE); 630 /* we try to be extra-careful here */
631 PAD *pad = PadlistARRAY (padlist)[i--];
632
377 if (svp) 633 if (pad)
378 { 634 {
379 SV *sv; 635 I32 j = PadMAX (pad);
380 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 636
637 while (j >= 0)
381 SvREFCNT_dec (sv); 638 SvREFCNT_dec (PadARRAY (pad)[j--]);
382 639
640 PadMAX (pad) = -1;
383 SvREFCNT_dec (*svp); 641 SvREFCNT_dec (pad);
384 } 642 }
385 } 643 }
386 644
645 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
646
647#if NEWPADAPI
648 Safefree (PadlistARRAY (padlist));
649 Safefree (padlist);
650#else
651 AvFILLp (padlist) = -1;
652 AvREAL_off (padlist);
387 SvREFCNT_dec ((SV*)padlist); 653 SvREFCNT_dec ((SV*)padlist);
654#endif
388 } 655 }
389} 656}
390 657
391static int 658static int
392coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 659coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
393{ 660{
394 AV *padlist; 661 PADLIST *padlist;
395 AV *av = (AV *)mg->mg_obj; 662 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
663 size_t len = *(size_t *)mg->mg_ptr;
396 664
397 /* casting is fun. */ 665 /* perl manages to free our internal AV and _then_ call us */
398 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 666 if (IN_DESTRUCT)
667 return 0;
668
669 while (len--)
399 free_padlist (aTHX_ padlist); 670 free_padlist (aTHX_ padlists[len]);
400
401 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
402 671
403 return 0; 672 return 0;
404} 673}
405
406#define CORO_MAGIC_type_cv 26
407#define CORO_MAGIC_type_state PERL_MAGIC_ext
408 674
409static MGVTBL coro_cv_vtbl = { 675static MGVTBL coro_cv_vtbl = {
410 0, 0, 0, 0, 676 0, 0, 0, 0,
411 coro_cv_free 677 coro_cv_free
412}; 678};
413 679
414#define CORO_MAGIC_NN(sv, type) \
415 (expect_true (SvMAGIC (sv)->mg_type == type) \
416 ? SvMAGIC (sv) \
417 : mg_find (sv, type))
418
419#define CORO_MAGIC(sv, type) \
420 (expect_true (SvMAGIC (sv)) \
421 ? CORO_MAGIC_NN (sv, type) \
422 : 0)
423
424#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
425#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
426
427INLINE struct coro *
428SvSTATE_ (pTHX_ SV *coro)
429{
430 HV *stash;
431 MAGIC *mg;
432
433 if (SvROK (coro))
434 coro = SvRV (coro);
435
436 if (expect_false (SvTYPE (coro) != SVt_PVHV))
437 croak ("Coro::State object required");
438
439 stash = SvSTASH (coro);
440 if (expect_false (stash != coro_stash && stash != coro_state_stash))
441 {
442 /* very slow, but rare, check */
443 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
444 croak ("Coro::State object required");
445 }
446
447 mg = CORO_MAGIC_state (coro);
448 return (struct coro *)mg->mg_ptr;
449}
450
451#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
452
453/* faster than SvSTATE, but expects a coroutine hv */
454#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
455#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
456
457/* the next two functions merely cache the padlists */ 680/* the next two functions merely cache the padlists */
458static void 681ecb_inline void
459get_padlist (pTHX_ CV *cv) 682get_padlist (pTHX_ CV *cv)
460{ 683{
461 MAGIC *mg = CORO_MAGIC_cv (cv); 684 MAGIC *mg = CORO_MAGIC_cv (cv);
462 AV *av; 685 size_t *lenp;
463 686
464 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 687 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
465 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 688 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
466 else 689 else
467 { 690 {
468#if CORO_PREFER_PERL_FUNCTIONS 691#if CORO_PREFER_PERL_FUNCTIONS
469 /* this is probably cleaner? but also slower! */ 692 /* this is probably cleaner? but also slower! */
470 /* in practise, it seems to be less stable */ 693 /* in practise, it seems to be less stable */
471 CV *cp = Perl_cv_clone (aTHX_ cv); 694 CV *cp = Perl_cv_clone (aTHX_ cv);
472 CvPADLIST (cv) = CvPADLIST (cp); 695 CvPADLIST (cv) = CvPADLIST (cp);
473 CvPADLIST (cp) = 0; 696 CvPADLIST (cp) = 0;
474 SvREFCNT_dec (cp); 697 SvREFCNT_dec (cp);
475#else 698#else
476 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 699 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
477#endif 700#endif
478 } 701 }
479} 702}
480 703
481static void 704ecb_inline void
482put_padlist (pTHX_ CV *cv) 705put_padlist (pTHX_ CV *cv)
483{ 706{
484 MAGIC *mg = CORO_MAGIC_cv (cv); 707 MAGIC *mg = CORO_MAGIC_cv (cv);
485 AV *av;
486 708
487 if (expect_false (!mg)) 709 if (ecb_expect_false (!mg))
710 {
488 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 711 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
712 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
713 mg->mg_len = 1; /* so mg_free frees mg_ptr */
714 }
715 else
716 Renew (mg->mg_ptr,
717 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
718 char);
489 719
490 av = (AV *)mg->mg_obj; 720 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
491
492 if (expect_false (AvFILLp (av) >= AvMAX (av)))
493 av_extend (av, AvMAX (av) + 1);
494
495 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
496} 721}
497 722
498/** load & save, init *******************************************************/ 723/** load & save, init *******************************************************/
724
725ecb_inline void
726swap_sv (SV *a, SV *b)
727{
728 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
729 SV tmp;
730
731 /* swap sv_any */
732 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
733
734 /* swap sv_flags */
735 SvFLAGS (&tmp) = SvFLAGS (a);
736 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
737 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
738
739#if PERL_VERSION_ATLEAST (5,10,0)
740 /* perl 5.10 and later complicates this _quite_ a bit, but it also
741 * is much faster, so no quarrels here. alternatively, we could
742 * sv_upgrade to avoid this.
743 */
744 {
745 /* swap sv_u */
746 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
747
748 /* if SvANY points to the head, we need to adjust the pointers,
749 * as the pointer for a still points to b, and maybe vice versa.
750 */
751 U32 svany_in_head_set = (1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV);
752 #if NVSIZE <= IVSIZE && PERL_VERSION_ATLEAST(5,22,0)
753 svany_in_head_set |= 1 << SVt_NV;
754 #endif
755
756 #define svany_in_head(type) (svany_in_head_set & (1 << (type)))
757
758 if (svany_in_head (SvTYPE (a)))
759 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
760
761 if (svany_in_head (SvTYPE (b)))
762 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
763 }
764#endif
765}
766
767/* swap sv heads, at least logically */
768static void
769swap_svs_enter (pTHX_ Coro__State c)
770{
771 int i;
772
773 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
774 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
775}
776
777static void
778swap_svs_leave (pTHX_ Coro__State c)
779{
780 int i;
781
782 for (i = AvFILLp (c->swap_sv) - 1; i >= 0; i -= 2)
783 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
784}
785
786#define SWAP_SVS_ENTER(coro) \
787 if (ecb_expect_false ((coro)->swap_sv)) \
788 swap_svs_enter (aTHX_ (coro))
789
790#define SWAP_SVS_LEAVE(coro) \
791 if (ecb_expect_false ((coro)->swap_sv)) \
792 swap_svs_leave (aTHX_ (coro))
793
794static void
795on_enterleave_call (pTHX_ SV *cb);
499 796
500static void 797static void
501load_perl (pTHX_ Coro__State c) 798load_perl (pTHX_ Coro__State c)
502{ 799{
503 perl_slots *slot = c->slot; 800 perl_slots *slot = c->slot;
504 c->slot = 0; 801 c->slot = 0;
505 802
506 PL_mainstack = c->mainstack; 803 PL_mainstack = c->mainstack;
507 804
508 GvSV (PL_defgv) = slot->defsv; 805#if CORO_JIT
509 GvAV (PL_defgv) = slot->defav; 806 load_perl_slots (slot);
510 GvSV (PL_errgv) = slot->errsv; 807#else
511 GvSV (irsgv) = slot->irsgv;
512
513 #define VAR(name,type) PL_ ## name = slot->name; 808 #define VARx(name,expr,type) expr = slot->name;
514 # include "state.h" 809 #include "state.h"
515 #undef VAR 810#endif
516 811
517 { 812 {
518 dSP; 813 dSP;
519 814
520 CV *cv; 815 CV *cv;
521 816
522 /* now do the ugly restore mess */ 817 /* now do the ugly restore mess */
523 while (expect_true (cv = (CV *)POPs)) 818 while (ecb_expect_true (cv = (CV *)POPs))
524 { 819 {
525 put_padlist (aTHX_ cv); /* mark this padlist as available */ 820 put_padlist (aTHX_ cv); /* mark this padlist as available */
526 CvDEPTH (cv) = PTR2IV (POPs); 821 CvDEPTH (cv) = PTR2IV (POPs);
527 CvPADLIST (cv) = (AV *)POPs; 822 CvPADLIST (cv) = (PADLIST *)POPs;
528 } 823 }
529 824
530 PUTBACK; 825 PUTBACK;
531 } 826 }
532 827
533 slf_frame = c->slf_frame; 828 slf_frame = c->slf_frame;
534 CORO_THROW = c->except; 829 CORO_THROW = c->except;
830
831 if (ecb_expect_false (enable_times))
832 {
833 if (ecb_expect_false (!times_valid))
834 coro_times_update ();
835
836 coro_times_sub (c);
837 }
838
839 if (ecb_expect_false (c->on_enter))
840 {
841 int i;
842
843 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
844 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
845 }
846
847 if (ecb_expect_false (c->on_enter_xs))
848 {
849 int i;
850
851 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
852 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
853 }
854
855 SWAP_SVS_ENTER (c);
535} 856}
536 857
537static void 858static void
538save_perl (pTHX_ Coro__State c) 859save_perl (pTHX_ Coro__State c)
539{ 860{
861 SWAP_SVS_LEAVE (c);
862
863 if (ecb_expect_false (c->on_leave_xs))
864 {
865 int i;
866
867 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
868 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
869 }
870
871 if (ecb_expect_false (c->on_leave))
872 {
873 int i;
874
875 for (i = AvFILLp (c->on_leave); i >= 0; --i)
876 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
877 }
878
879 times_valid = 0;
880
881 if (ecb_expect_false (enable_times))
882 {
883 coro_times_update (); times_valid = 1;
884 coro_times_add (c);
885 }
886
540 c->except = CORO_THROW; 887 c->except = CORO_THROW;
541 c->slf_frame = slf_frame; 888 c->slf_frame = slf_frame;
542 889
543 { 890 {
544 dSP; 891 dSP;
… …
553 900
554 XPUSHs (Nullsv); 901 XPUSHs (Nullsv);
555 /* this loop was inspired by pp_caller */ 902 /* this loop was inspired by pp_caller */
556 for (;;) 903 for (;;)
557 { 904 {
558 while (expect_true (cxix >= 0)) 905 while (ecb_expect_true (cxix >= 0))
559 { 906 {
560 PERL_CONTEXT *cx = &ccstk[cxix--]; 907 PERL_CONTEXT *cx = &ccstk[cxix--];
561 908
562 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 909 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
563 { 910 {
564 CV *cv = cx->blk_sub.cv; 911 CV *cv = cx->blk_sub.cv;
565 912
566 if (expect_true (CvDEPTH (cv))) 913 if (ecb_expect_true (CvDEPTH (cv)))
567 { 914 {
568 EXTEND (SP, 3); 915 EXTEND (SP, 3);
569 PUSHs ((SV *)CvPADLIST (cv)); 916 PUSHs ((SV *)CvPADLIST (cv));
570 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 917 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
571 PUSHs ((SV *)cv); 918 PUSHs ((SV *)cv);
… …
574 get_padlist (aTHX_ cv); 921 get_padlist (aTHX_ cv);
575 } 922 }
576 } 923 }
577 } 924 }
578 925
579 if (expect_true (top_si->si_type == PERLSI_MAIN)) 926 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
580 break; 927 break;
581 928
582 top_si = top_si->si_prev; 929 top_si = top_si->si_prev;
583 ccstk = top_si->si_cxstack; 930 ccstk = top_si->si_cxstack;
584 cxix = top_si->si_cxix; 931 cxix = top_si->si_cxix;
… …
586 933
587 PUTBACK; 934 PUTBACK;
588 } 935 }
589 936
590 /* allocate some space on the context stack for our purposes */ 937 /* allocate some space on the context stack for our purposes */
591 /* we manually unroll here, as usually 2 slots is enough */ 938 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
592 if (SLOT_COUNT >= 1) CXINC;
593 if (SLOT_COUNT >= 2) CXINC;
594 if (SLOT_COUNT >= 3) CXINC;
595 { 939 {
596 int i; 940 unsigned int i;
941
597 for (i = 3; i < SLOT_COUNT; ++i) 942 for (i = 0; i < SLOT_COUNT; ++i)
598 CXINC; 943 CXINC;
599 } 944
600 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 945 cxstack_ix -= SLOT_COUNT; /* undo allocation */
946 }
601 947
602 c->mainstack = PL_mainstack; 948 c->mainstack = PL_mainstack;
603 949
604 { 950 {
605 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 951 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
606 952
607 slot->defav = GvAV (PL_defgv); 953#if CORO_JIT
608 slot->defsv = DEFSV; 954 save_perl_slots (slot);
609 slot->errsv = ERRSV; 955#else
610 slot->irsgv = GvSV (irsgv);
611
612 #define VAR(name,type) slot->name = PL_ ## name; 956 #define VARx(name,expr,type) slot->name = expr;
613 # include "state.h" 957 #include "state.h"
614 #undef VAR 958#endif
615 } 959 }
616} 960}
617 961
618/* 962/*
619 * allocate various perl stacks. This is almost an exact copy 963 * allocate various perl stacks. This is almost an exact copy
… …
625# define coro_init_stacks(thx) init_stacks () 969# define coro_init_stacks(thx) init_stacks ()
626#else 970#else
627static void 971static void
628coro_init_stacks (pTHX) 972coro_init_stacks (pTHX)
629{ 973{
630 PL_curstackinfo = new_stackinfo(32, 8); 974 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
631 PL_curstackinfo->si_type = PERLSI_MAIN; 975 PL_curstackinfo->si_type = PERLSI_MAIN;
632 PL_curstack = PL_curstackinfo->si_stack; 976 PL_curstack = PL_curstackinfo->si_stack;
633 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 977 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
634 978
635 PL_stack_base = AvARRAY(PL_curstack); 979 PL_stack_base = AvARRAY(PL_curstack);
… …
650#endif 994#endif
651 995
652 New(54,PL_scopestack,8,I32); 996 New(54,PL_scopestack,8,I32);
653 PL_scopestack_ix = 0; 997 PL_scopestack_ix = 0;
654 PL_scopestack_max = 8; 998 PL_scopestack_max = 8;
999#if HAS_SCOPESTACK_NAME
1000 New(54,PL_scopestack_name,8,const char*);
1001#endif
655 1002
656 New(54,PL_savestack,24,ANY); 1003 New(54,PL_savestack,24,ANY);
657 PL_savestack_ix = 0; 1004 PL_savestack_ix = 0;
658 PL_savestack_max = 24; 1005 PL_savestack_max = 24;
1006#if PERL_VERSION_ATLEAST (5,24,0)
1007 /* perl 5.24 moves SS_MAXPUSH optimisation from */
1008 /* the header macros to PL_savestack_max */
1009 PL_savestack_max -= SS_MAXPUSH;
1010#endif
659 1011
660#if !PERL_VERSION_ATLEAST (5,10,0) 1012#if !PERL_VERSION_ATLEAST (5,10,0)
661 New(54,PL_retstack,4,OP*); 1013 New(54,PL_retstack,4,OP*);
662 PL_retstack_ix = 0; 1014 PL_retstack_ix = 0;
663 PL_retstack_max = 4; 1015 PL_retstack_max = 4;
… …
687 } 1039 }
688 1040
689 Safefree (PL_tmps_stack); 1041 Safefree (PL_tmps_stack);
690 Safefree (PL_markstack); 1042 Safefree (PL_markstack);
691 Safefree (PL_scopestack); 1043 Safefree (PL_scopestack);
1044#if HAS_SCOPESTACK_NAME
1045 Safefree (PL_scopestack_name);
1046#endif
692 Safefree (PL_savestack); 1047 Safefree (PL_savestack);
693#if !PERL_VERSION_ATLEAST (5,10,0) 1048#if !PERL_VERSION_ATLEAST (5,10,0)
694 Safefree (PL_retstack); 1049 Safefree (PL_retstack);
695#endif 1050#endif
696} 1051}
… …
726 } 1081 }
727 1082
728 return rss; 1083 return rss;
729} 1084}
730 1085
731/** coroutine stack handling ************************************************/ 1086/** provide custom get/set/clear methods for %SIG elements ******************/
732
733static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
734static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
735static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
736 1087
737/* apparently < 5.8.8 */ 1088/* apparently < 5.8.8 */
738#ifndef MgPV_nolen_const 1089#ifndef MgPV_nolen_const
739#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ 1090#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
740 SvPV_nolen((SV*)((mg)->mg_ptr)) : \ 1091 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
741 (const char*)(mg)->mg_ptr) 1092 (const char*)(mg)->mg_ptr)
742#endif 1093#endif
743 1094
1095/* this will be a patched copy of PL_vtbl_sigelem */
1096static MGVTBL coro_sigelem_vtbl;
1097
1098static int ecb_cold
1099coro_sig_copy (pTHX_ SV *sv, MAGIC *mg, SV *nsv, const char *name, I32 namlen)
1100{
1101 char *key = SvPV_nolen ((SV *)name);
1102
1103 /* do what mg_copy normally does */
1104 sv_magic (nsv, mg->mg_obj, PERL_MAGIC_sigelem, name, namlen);
1105 assert (mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual == &PL_vtbl_sigelem);
1106
1107 /* patch sigelem vtbl, but only for __WARN__ and __DIE__ */
1108 if (*key == '_'
1109 && (strEQ (key, "__DIE__")
1110 || strEQ (key, "__WARN__")))
1111 mg_find (nsv, PERL_MAGIC_sigelem)->mg_virtual = &coro_sigelem_vtbl;
1112
1113 return 1;
1114}
1115
1116/* perl does not have a %SIG vtbl, we provide one so we can override */
1117/* the magic vtbl for the __DIE__ and __WARN__ members */
1118static const MGVTBL coro_sig_vtbl = {
1119 0, 0, 0, 0, 0,
1120 coro_sig_copy
1121};
1122
744/* 1123/*
745 * This overrides the default magic get method of %SIG elements. 1124 * This overrides the default magic get method of %SIG elements.
746 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1125 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
747 * and instead of tryign to save and restore the hash elements, we just provide 1126 * and instead of trying to save and restore the hash elements (extremely slow),
748 * readback here. 1127 * we just provide our own readback here.
749 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
750 * not expecting this to actually change the hook. This is a potential problem
751 * when a schedule happens then, but we ignore this.
752 */ 1128 */
753static int 1129static int ecb_cold
754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1130coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{ 1131{
756 const char *s = MgPV_nolen_const (mg); 1132 const char *s = MgPV_nolen_const (mg);
1133 /* the key must be either __DIE__ or __WARN__ here */
1134 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
757 1135
758 if (*s == '_') 1136 SV *ssv;
759 {
760 SV **svp = 0;
761 1137
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764
765 if (svp) 1138 if (!*svp)
766 { 1139 ssv = &PL_sv_undef;
767 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1140 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
768 return 0; 1141 ssv = sv_2mortal (newRV_inc (*svp));
769 } 1142 else
770 } 1143 ssv = *svp;
771 1144
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1145 sv_setsv (sv, ssv);
1146 return 0;
773} 1147}
774 1148
775static int 1149static int ecb_cold
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1150coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{ 1151{
778 const char *s = MgPV_nolen_const (mg); 1152 const char *s = MgPV_nolen_const (mg);
1153 /* the key must be either __DIE__ or __WARN__ here */
1154 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
779 1155
780 if (*s == '_')
781 {
782 SV **svp = 0;
783
784 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
785 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
786
787 if (svp)
788 {
789 SV *old = *svp; 1156 SV *old = *svp;
790 *svp = 0; 1157 *svp = 0;
791 SvREFCNT_dec (old); 1158 SvREFCNT_dec (old);
792 return 0; 1159 return 0;
793 }
794 }
795
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797} 1160}
798 1161
799static int 1162static int ecb_cold
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1163coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{ 1164{
802 const char *s = MgPV_nolen_const (mg); 1165 const char *s = MgPV_nolen_const (mg);
1166 /* the key must be either __DIE__ or __WARN__ here */
1167 SV **svp = s[2] == 'D' ? &PL_diehook : &PL_warnhook;
803 1168
804 if (*s == '_')
805 {
806 SV **svp = 0;
807
808 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810
811 if (svp)
812 {
813 SV *old = *svp; 1169 SV *old = *svp;
814 *svp = newSVsv (sv); 1170 *svp = SvOK (sv) ? newSVsv (sv) : 0;
815 SvREFCNT_dec (old); 1171 SvREFCNT_dec (old);
816 return 0; 1172 return 0;
817 }
818 }
819
820 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
821} 1173}
822 1174
823static void 1175static void
824prepare_nop (pTHX_ struct coro_transfer_args *ta) 1176prepare_nop (pTHX_ struct coro_transfer_args *ta)
825{ 1177{
… …
831slf_check_nop (pTHX_ struct CoroSLF *frame) 1183slf_check_nop (pTHX_ struct CoroSLF *frame)
832{ 1184{
833 return 0; 1185 return 0;
834} 1186}
835 1187
836static UNOP coro_setup_op; 1188static int
1189slf_check_repeat (pTHX_ struct CoroSLF *frame)
1190{
1191 return 1;
1192}
837 1193
838static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1194/** coroutine stack handling ************************************************/
1195
1196static UNOP init_perl_op;
1197
1198ecb_noinline static void /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1199init_perl (pTHX_ struct coro *coro)
840{ 1200{
841 /* 1201 /*
842 * emulate part of the perl startup here. 1202 * emulate part of the perl startup here.
843 */ 1203 */
844 coro_init_stacks (aTHX); 1204 coro_init_stacks (aTHX);
845 1205
846 PL_runops = RUNOPS_DEFAULT; 1206 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1207 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1208 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1209 PL_comppad = 0;
1210 PL_comppad_name = 0;
1211 PL_comppad_name_fill = 0;
1212 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1213 PL_curpm = 0;
851 PL_curpad = 0; 1214 PL_curpad = 0;
852 PL_localizing = 0; 1215 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1216 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1217#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1218 PL_parser = 0;
857#endif 1219#endif
1220 PL_hints = 0;
858 1221
859 /* recreate the die/warn hooks */ 1222 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1223 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1224 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1225
863 GvSV (PL_defgv) = newSV (0); 1226 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1227 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1228 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1229 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1230 GvHV (PL_hintgv) = newHV ();
1231#if PERL_VERSION_ATLEAST (5,10,0)
1232 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1233#endif
867 PL_rs = newSVsv (GvSV (irsgv)); 1234 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1235 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1236
870 { 1237 {
871 dSP; 1238 dSP;
… …
875 myop.op_next = Nullop; 1242 myop.op_next = Nullop;
876 myop.op_type = OP_ENTERSUB; 1243 myop.op_type = OP_ENTERSUB;
877 myop.op_flags = OPf_WANT_VOID; 1244 myop.op_flags = OPf_WANT_VOID;
878 1245
879 PUSHMARK (SP); 1246 PUSHMARK (SP);
880 PUSHs ((SV *)coro->startcv); 1247 XPUSHs ((SV *)coro->startcv);
881 PUTBACK; 1248 PUTBACK;
882 PL_op = (OP *)&myop; 1249 PL_op = (OP *)&myop;
883 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1250 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
884 } 1251 }
885 1252
886 /* this newly created coroutine might be run on an existing cctx which most 1253 /* this newly created coroutine might be run on an existing cctx which most
887 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1254 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 */ 1255 */
889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1256 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
890 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1257 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1258 slf_frame.destroy = 0;
891 1259
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1260 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
893 coro_setup_op.op_next = PL_op; 1261 init_perl_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM; 1262 init_perl_op.op_type = OP_ENTERSUB;
895 coro_setup_op.op_ppaddr = pp_slf; 1263 init_perl_op.op_ppaddr = pp_slf;
896 /* no flags etc. required, as an init function won't be called */ 1264 /* no flags etc. required, as an init function won't be called */
897 1265
898 PL_op = (OP *)&coro_setup_op; 1266 PL_op = (OP *)&init_perl_op;
899 1267
900 /* copy throw, in case it was set before coro_setup */ 1268 /* copy throw, in case it was set before init_perl */
901 CORO_THROW = coro->except; 1269 CORO_THROW = coro->except;
902}
903 1270
1271 SWAP_SVS_ENTER (coro);
1272
1273 if (ecb_expect_false (enable_times))
1274 {
1275 coro_times_update ();
1276 coro_times_sub (coro);
1277 }
1278}
1279
904static void 1280static void
905coro_destruct (pTHX_ struct coro *coro) 1281coro_unwind_stacks (pTHX)
906{ 1282{
907 if (!IN_DESTRUCT) 1283 if (!IN_DESTRUCT)
908 { 1284 {
909 /* restore all saved variables and stuff */ 1285 /* restore all saved variables and stuff */
910 LEAVE_SCOPE (0); 1286 LEAVE_SCOPE (0);
… …
918 POPSTACK_TO (PL_mainstack); 1294 POPSTACK_TO (PL_mainstack);
919 1295
920 /* unwind main stack */ 1296 /* unwind main stack */
921 dounwind (-1); 1297 dounwind (-1);
922 } 1298 }
1299}
923 1300
924 SvREFCNT_dec (GvSV (PL_defgv)); 1301static void
925 SvREFCNT_dec (GvAV (PL_defgv)); 1302destroy_perl (pTHX_ struct coro *coro)
926 SvREFCNT_dec (GvSV (PL_errgv)); 1303{
927 SvREFCNT_dec (PL_defoutgv); 1304 SV *svf [9];
928 SvREFCNT_dec (PL_rs);
929 SvREFCNT_dec (GvSV (irsgv));
930 1305
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933 1306 {
1307 SV *old_current = SvRV (coro_current);
1308 struct coro *current = SvSTATE (old_current);
1309
1310 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1311
1312 save_perl (aTHX_ current);
1313
1314 /* this will cause transfer_check to croak on block*/
1315 SvRV_set (coro_current, (SV *)coro->hv);
1316
1317 load_perl (aTHX_ coro);
1318
1319 /* restore swapped sv's */
1320 SWAP_SVS_LEAVE (coro);
1321
1322 coro_unwind_stacks (aTHX);
1323
1324 coro_destruct_stacks (aTHX);
1325
1326 /* now save some sv's to be free'd later */
1327 svf [0] = GvSV (PL_defgv);
1328 svf [1] = (SV *)GvAV (PL_defgv);
1329 svf [2] = GvSV (PL_errgv);
1330 svf [3] = (SV *)PL_defoutgv;
1331 svf [4] = PL_rs;
1332 svf [5] = GvSV (irsgv);
1333 svf [6] = (SV *)GvHV (PL_hintgv);
1334 svf [7] = PL_diehook;
1335 svf [8] = PL_warnhook;
1336 assert (9 == sizeof (svf) / sizeof (*svf));
1337
1338 SvRV_set (coro_current, old_current);
1339
1340 load_perl (aTHX_ current);
1341 }
1342
1343 {
1344 unsigned int i;
1345
1346 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1347 SvREFCNT_dec (svf [i]);
1348
934 SvREFCNT_dec (coro->saved_deffh); 1349 SvREFCNT_dec (coro->saved_deffh);
935 SvREFCNT_dec (coro->rouse_cb); 1350 SvREFCNT_dec (coro->rouse_cb);
936 SvREFCNT_dec (coro->invoke_cb); 1351 SvREFCNT_dec (coro->invoke_cb);
937 SvREFCNT_dec (coro->invoke_av); 1352 SvREFCNT_dec (coro->invoke_av);
938 1353 SvREFCNT_dec (coro->on_enter_xs);
939 coro_destruct_stacks (aTHX); 1354 SvREFCNT_dec (coro->on_leave_xs);
1355 }
940} 1356}
941 1357
942INLINE void 1358ecb_inline void
943free_coro_mortal (pTHX) 1359free_coro_mortal (pTHX)
944{ 1360{
945 if (expect_true (coro_mortal)) 1361 if (ecb_expect_true (coro_mortal))
946 { 1362 {
947 SvREFCNT_dec (coro_mortal); 1363 SvREFCNT_dec ((SV *)coro_mortal);
948 coro_mortal = 0; 1364 coro_mortal = 0;
949 } 1365 }
950} 1366}
951 1367
952static int 1368static int
953runops_trace (pTHX) 1369runops_trace (pTHX)
954{ 1370{
955 COP *oldcop = 0; 1371 COP *oldcop = 0;
956 int oldcxix = -2; 1372 int oldcxix = -2;
957 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
958 coro_cctx *cctx = coro->cctx;
959 1373
960 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1374 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
961 { 1375 {
962 PERL_ASYNC_CHECK (); 1376 PERL_ASYNC_CHECK ();
963 1377
964 if (cctx->flags & CC_TRACE_ALL) 1378 if (cctx_current->flags & CC_TRACE_ALL)
965 { 1379 {
966 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1380 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
967 { 1381 {
968 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1382 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
969 SV **bot, **top; 1383 SV **bot, **top;
970 AV *av = newAV (); /* return values */ 1384 AV *av = newAV (); /* return values */
971 SV **cb; 1385 SV **cb;
… …
986 av_push (av, SvREFCNT_inc_NN (*bot++)); 1400 av_push (av, SvREFCNT_inc_NN (*bot++));
987 1401
988 PL_runops = RUNOPS_DEFAULT; 1402 PL_runops = RUNOPS_DEFAULT;
989 ENTER; 1403 ENTER;
990 SAVETMPS; 1404 SAVETMPS;
1405 PUSHMARK (SP);
991 EXTEND (SP, 3); 1406 EXTEND (SP, 3);
992 PUSHMARK (SP);
993 PUSHs (&PL_sv_no); 1407 PUSHs (&PL_sv_no);
994 PUSHs (fullname); 1408 PUSHs (fullname);
995 PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 1409 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
996 PUTBACK; 1410 PUTBACK;
997 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1411 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
… …
1008 1422
1009 if (PL_curcop != &PL_compiling) 1423 if (PL_curcop != &PL_compiling)
1010 { 1424 {
1011 SV **cb; 1425 SV **cb;
1012 1426
1013 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1427 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1014 { 1428 {
1015 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1429 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1016 1430
1017 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1431 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1018 { 1432 {
1019 runops_proc_t old_runops = PL_runops;
1020 dSP; 1433 dSP;
1021 GV *gv = CvGV (cx->blk_sub.cv); 1434 GV *gv = CvGV (cx->blk_sub.cv);
1022 SV *fullname = sv_2mortal (newSV (0)); 1435 SV *fullname = sv_2mortal (newSV (0));
1023 1436
1024 if (isGV (gv)) 1437 if (isGV (gv))
1025 gv_efullname3 (fullname, gv, 0); 1438 gv_efullname3 (fullname, gv, 0);
1026 1439
1027 PL_runops = RUNOPS_DEFAULT; 1440 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1441 ENTER;
1029 SAVETMPS; 1442 SAVETMPS;
1443 PUSHMARK (SP);
1030 EXTEND (SP, 3); 1444 EXTEND (SP, 3);
1031 PUSHMARK (SP);
1032 PUSHs (&PL_sv_yes); 1445 PUSHs (&PL_sv_yes);
1033 PUSHs (fullname); 1446 PUSHs (fullname);
1034 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1447 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc (SUB_ARGARRAY)) : &PL_sv_undef);
1035 PUTBACK; 1448 PUTBACK;
1036 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1449 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1037 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1450 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1038 SPAGAIN; 1451 SPAGAIN;
1039 FREETMPS; 1452 FREETMPS;
… …
1042 } 1455 }
1043 1456
1044 oldcxix = cxstack_ix; 1457 oldcxix = cxstack_ix;
1045 } 1458 }
1046 1459
1047 if (cctx->flags & CC_TRACE_LINE) 1460 if (cctx_current->flags & CC_TRACE_LINE)
1048 { 1461 {
1049 dSP; 1462 dSP;
1050 1463
1051 PL_runops = RUNOPS_DEFAULT; 1464 PL_runops = RUNOPS_DEFAULT;
1052 ENTER; 1465 ENTER;
1053 SAVETMPS; 1466 SAVETMPS;
1054 EXTEND (SP, 3);
1055 PL_runops = RUNOPS_DEFAULT;
1056 PUSHMARK (SP); 1467 PUSHMARK (SP);
1468 EXTEND (SP, 2);
1057 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); 1469 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1058 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); 1470 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1059 PUTBACK; 1471 PUTBACK;
1060 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); 1472 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1061 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1473 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
… …
1071 1483
1072 TAINT_NOT; 1484 TAINT_NOT;
1073 return 0; 1485 return 0;
1074} 1486}
1075 1487
1076static struct coro_cctx *cctx_ssl_cctx;
1077static struct CoroSLF cctx_ssl_frame; 1488static struct CoroSLF cctx_ssl_frame;
1078 1489
1079static void 1490static void
1080slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1491slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1081{ 1492{
1082 ta->prev = (struct coro *)cctx_ssl_cctx;
1083 ta->next = 0; 1493 ta->prev = 0;
1084} 1494}
1085 1495
1086static int 1496static int
1087slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1497slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1088{ 1498{
… …
1090 1500
1091 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1501 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1092} 1502}
1093 1503
1094/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1504/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1095static void NOINLINE 1505static void ecb_noinline
1096cctx_prepare (pTHX_ coro_cctx *cctx) 1506cctx_prepare (pTHX)
1097{ 1507{
1098 PL_top_env = &PL_start_env; 1508 PL_top_env = &PL_start_env;
1099 1509
1100 if (cctx->flags & CC_TRACE) 1510 if (cctx_current->flags & CC_TRACE)
1101 PL_runops = runops_trace; 1511 PL_runops = runops_trace;
1102 1512
1103 /* we already must be executing an SLF op, there is no other valid way 1513 /* we already must be executing an SLF op, there is no other valid way
1104 * that can lead to creation of a new cctx */ 1514 * that can lead to creation of a new cctx */
1105 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1515 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1106 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1516 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1107 1517
1108 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1518 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1109 cctx_ssl_cctx = cctx;
1110 cctx_ssl_frame = slf_frame; 1519 cctx_ssl_frame = slf_frame;
1111 1520
1112 slf_frame.prepare = slf_prepare_set_stacklevel; 1521 slf_frame.prepare = slf_prepare_set_stacklevel;
1113 slf_frame.check = slf_check_set_stacklevel; 1522 slf_frame.check = slf_check_set_stacklevel;
1114} 1523}
1115 1524
1116/* the tail of transfer: execute stuff we can only do after a transfer */ 1525/* the tail of transfer: execute stuff we can only do after a transfer */
1117INLINE void 1526ecb_inline void
1118transfer_tail (pTHX) 1527transfer_tail (pTHX)
1119{ 1528{
1120 free_coro_mortal (aTHX); 1529 free_coro_mortal (aTHX);
1530}
1531
1532/* try to exit the same way perl's main function would do */
1533/* we do not bother resetting the environment or other things *7
1534/* that are not, uhm, essential */
1535/* this obviously also doesn't work when perl is embedded */
1536static void ecb_noinline ecb_cold
1537perlish_exit (pTHX)
1538{
1539 int exitstatus = perl_destruct (PL_curinterp);
1540 perl_free (PL_curinterp);
1541 exit (exitstatus);
1121} 1542}
1122 1543
1123/* 1544/*
1124 * this is a _very_ stripped down perl interpreter ;) 1545 * this is a _very_ stripped down perl interpreter ;)
1125 */ 1546 */
… …
1137 /* normally we would need to skip the entersub here */ 1558 /* normally we would need to skip the entersub here */
1138 /* not doing so will re-execute it, which is exactly what we want */ 1559 /* not doing so will re-execute it, which is exactly what we want */
1139 /* PL_nop = PL_nop->op_next */ 1560 /* PL_nop = PL_nop->op_next */
1140 1561
1141 /* inject a fake subroutine call to cctx_init */ 1562 /* inject a fake subroutine call to cctx_init */
1142 cctx_prepare (aTHX_ (coro_cctx *)arg); 1563 cctx_prepare (aTHX);
1143 1564
1144 /* cctx_run is the alternative tail of transfer() */ 1565 /* cctx_run is the alternative tail of transfer() */
1145 transfer_tail (aTHX); 1566 transfer_tail (aTHX);
1146 1567
1147 /* somebody or something will hit me for both perl_run and PL_restartop */ 1568 /* somebody or something will hit me for both perl_run and PL_restartop */
1148 PL_restartop = PL_op; 1569 PL_restartop = PL_op;
1149 perl_run (PL_curinterp); 1570 perl_run (PL_curinterp);
1150 /* 1571 /*
1151 * Unfortunately, there is no way to get at the return values of the 1572 * Unfortunately, there is no way to get at the return values of the
1152 * coro body here, as perl_run destroys these 1573 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1574 * runtime errors here, as this is just a random interpreter, not a thread.
1153 */ 1575 */
1576
1577 /*
1578 * pp_entersub in 5.24 no longer ENTERs, but perl_destruct
1579 * requires PL_scopestack_ix, so do it here if required.
1580 */
1581 if (!PL_scopestack_ix)
1582 ENTER;
1154 1583
1155 /* 1584 /*
1156 * If perl-run returns we assume exit() was being called or the coro 1585 * If perl-run returns we assume exit() was being called or the coro
1157 * fell off the end, which seems to be the only valid (non-bug) 1586 * fell off the end, which seems to be the only valid (non-bug)
1158 * reason for perl_run to return. We try to exit by jumping to the 1587 * reason for perl_run to return. We try to mimic whatever perl is normally
1159 * bootstrap-time "top" top_env, as we cannot restore the "main" 1588 * doing in that case. YMMV.
1160 * coroutine as Coro has no such concept
1161 */ 1589 */
1162 PL_top_env = main_top_env; 1590 perlish_exit (aTHX);
1163 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1164 } 1591 }
1165} 1592}
1166 1593
1167static coro_cctx * 1594static coro_cctx *
1168cctx_new () 1595cctx_new (void)
1169{ 1596{
1170 coro_cctx *cctx; 1597 coro_cctx *cctx;
1171 1598
1172 ++cctx_count; 1599 ++cctx_count;
1173 New (0, cctx, 1, coro_cctx); 1600 New (0, cctx, 1, coro_cctx);
… …
1179 return cctx; 1606 return cctx;
1180} 1607}
1181 1608
1182/* create a new cctx only suitable as source */ 1609/* create a new cctx only suitable as source */
1183static coro_cctx * 1610static coro_cctx *
1184cctx_new_empty () 1611cctx_new_empty (void)
1185{ 1612{
1186 coro_cctx *cctx = cctx_new (); 1613 coro_cctx *cctx = cctx_new ();
1187 1614
1188 cctx->sptr = 0; 1615 cctx->stack.sptr = 0;
1189 coro_create (&cctx->cctx, 0, 0, 0, 0); 1616 coro_create (&cctx->cctx, 0, 0, 0, 0);
1190 1617
1191 return cctx; 1618 return cctx;
1192} 1619}
1193 1620
1194/* create a new cctx suitable as destination/running a perl interpreter */ 1621/* create a new cctx suitable as destination/running a perl interpreter */
1195static coro_cctx * 1622static coro_cctx *
1196cctx_new_run () 1623cctx_new_run (void)
1197{ 1624{
1198 coro_cctx *cctx = cctx_new (); 1625 coro_cctx *cctx = cctx_new ();
1199 void *stack_start;
1200 size_t stack_size;
1201 1626
1202#if HAVE_MMAP 1627 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1203 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1204 /* mmap supposedly does allocate-on-write for us */
1205 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1206
1207 if (cctx->sptr != (void *)-1)
1208 {
1209 #if CORO_STACKGUARD
1210 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1211 #endif
1212 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1213 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1214 cctx->flags |= CC_MAPPED;
1215 } 1628 {
1216 else
1217#endif
1218 {
1219 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1220 New (0, cctx->sptr, cctx_stacksize, long);
1221
1222 if (!cctx->sptr)
1223 {
1224 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1629 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1225 _exit (EXIT_FAILURE); 1630 _exit (EXIT_FAILURE);
1226 }
1227
1228 stack_start = cctx->sptr;
1229 stack_size = cctx->ssize;
1230 } 1631 }
1231 1632
1232 #if CORO_USE_VALGRIND
1233 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1234 #endif
1235
1236 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1633 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1237 1634
1238 return cctx; 1635 return cctx;
1239} 1636}
1240 1637
1241static void 1638static void
1242cctx_destroy (coro_cctx *cctx) 1639cctx_destroy (coro_cctx *cctx)
1243{ 1640{
1244 if (!cctx) 1641 if (!cctx)
1245 return; 1642 return;
1246 1643
1644 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1645
1247 --cctx_count; 1646 --cctx_count;
1248 coro_destroy (&cctx->cctx); 1647 coro_destroy (&cctx->cctx);
1249 1648
1250 /* coro_transfer creates new, empty cctx's */ 1649 coro_stack_free (&cctx->stack);
1251 if (cctx->sptr)
1252 {
1253 #if CORO_USE_VALGRIND
1254 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1255 #endif
1256
1257#if HAVE_MMAP
1258 if (cctx->flags & CC_MAPPED)
1259 munmap (cctx->sptr, cctx->ssize);
1260 else
1261#endif
1262 Safefree (cctx->sptr);
1263 }
1264 1650
1265 Safefree (cctx); 1651 Safefree (cctx);
1266} 1652}
1267 1653
1268/* wether this cctx should be destructed */ 1654/* wether this cctx should be destructed */
1269#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1655#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1270 1656
1271static coro_cctx * 1657static coro_cctx *
1272cctx_get (pTHX) 1658cctx_get (pTHX)
1273{ 1659{
1274 while (expect_true (cctx_first)) 1660 while (ecb_expect_true (cctx_first))
1275 { 1661 {
1276 coro_cctx *cctx = cctx_first; 1662 coro_cctx *cctx = cctx_first;
1277 cctx_first = cctx->next; 1663 cctx_first = cctx->next;
1278 --cctx_idle; 1664 --cctx_idle;
1279 1665
1280 if (expect_true (!CCTX_EXPIRED (cctx))) 1666 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1281 return cctx; 1667 return cctx;
1282 1668
1283 cctx_destroy (cctx); 1669 cctx_destroy (cctx);
1284 } 1670 }
1285 1671
… …
1287} 1673}
1288 1674
1289static void 1675static void
1290cctx_put (coro_cctx *cctx) 1676cctx_put (coro_cctx *cctx)
1291{ 1677{
1292 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1678 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1293 1679
1294 /* free another cctx if overlimit */ 1680 /* free another cctx if overlimit */
1295 if (expect_false (cctx_idle >= cctx_max_idle)) 1681 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1296 { 1682 {
1297 coro_cctx *first = cctx_first; 1683 coro_cctx *first = cctx_first;
1298 cctx_first = first->next; 1684 cctx_first = first->next;
1299 --cctx_idle; 1685 --cctx_idle;
1300 1686
… …
1311static void 1697static void
1312transfer_check (pTHX_ struct coro *prev, struct coro *next) 1698transfer_check (pTHX_ struct coro *prev, struct coro *next)
1313{ 1699{
1314 /* TODO: throwing up here is considered harmful */ 1700 /* TODO: throwing up here is considered harmful */
1315 1701
1316 if (expect_true (prev != next)) 1702 if (ecb_expect_true (prev != next))
1317 { 1703 {
1318 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1704 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1319 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1705 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1320 1706
1321 if (expect_false (next->flags & CF_RUNNING)) 1707 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1322 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1323
1324 if (expect_false (next->flags & CF_DESTROYED))
1325 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1708 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1326 1709
1327#if !PERL_VERSION_ATLEAST (5,10,0) 1710#if !PERL_VERSION_ATLEAST (5,10,0)
1328 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1711 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1329 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1712 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1330#endif 1713#endif
1331 } 1714 }
1332} 1715}
1333 1716
1334/* always use the TRANSFER macro */ 1717/* always use the TRANSFER macro */
1335static void NOINLINE /* noinline so we have a fixed stackframe */ 1718static void ecb_noinline /* noinline so we have a fixed stackframe */
1336transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1719transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1337{ 1720{
1338 dSTACKLEVEL; 1721 dSTACKLEVEL;
1339 1722
1340 /* sometimes transfer is only called to set idle_sp */ 1723 /* sometimes transfer is only called to set idle_sp */
1341 if (expect_false (!next)) 1724 if (ecb_expect_false (!prev))
1342 { 1725 {
1343 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1726 cctx_current->idle_sp = STACKLEVEL;
1344 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1727 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1345 } 1728 }
1346 else if (expect_true (prev != next)) 1729 else if (ecb_expect_true (prev != next))
1347 { 1730 {
1348 coro_cctx *prev__cctx; 1731 coro_cctx *cctx_prev;
1349 1732
1350 if (expect_false (prev->flags & CF_NEW)) 1733 if (ecb_expect_false (prev->flags & CF_NEW))
1351 { 1734 {
1352 /* create a new empty/source context */ 1735 /* create a new empty/source context */
1353 prev->cctx = cctx_new_empty ();
1354 prev->flags &= ~CF_NEW; 1736 prev->flags &= ~CF_NEW;
1355 prev->flags |= CF_RUNNING; 1737 prev->flags |= CF_RUNNING;
1356 } 1738 }
1357 1739
1358 prev->flags &= ~CF_RUNNING; 1740 prev->flags &= ~CF_RUNNING;
1359 next->flags |= CF_RUNNING; 1741 next->flags |= CF_RUNNING;
1360 1742
1361 /* first get rid of the old state */ 1743 /* first get rid of the old state */
1362 save_perl (aTHX_ prev); 1744 save_perl (aTHX_ prev);
1363 1745
1364 if (expect_false (next->flags & CF_NEW)) 1746 if (ecb_expect_false (next->flags & CF_NEW))
1365 { 1747 {
1366 /* need to start coroutine */ 1748 /* need to start coroutine */
1367 next->flags &= ~CF_NEW; 1749 next->flags &= ~CF_NEW;
1368 /* setup coroutine call */ 1750 /* setup coroutine call */
1369 coro_setup (aTHX_ next); 1751 init_perl (aTHX_ next);
1370 } 1752 }
1371 else 1753 else
1372 load_perl (aTHX_ next); 1754 load_perl (aTHX_ next);
1373 1755
1374 prev__cctx = prev->cctx;
1375
1376 /* possibly untie and reuse the cctx */ 1756 /* possibly untie and reuse the cctx */
1377 if (expect_true ( 1757 if (ecb_expect_true (
1378 prev__cctx->idle_sp == STACKLEVEL 1758 cctx_current->idle_sp == STACKLEVEL
1379 && !(prev__cctx->flags & CC_TRACE) 1759 && !(cctx_current->flags & CC_TRACE)
1380 && !force_cctx 1760 && !force_cctx
1381 )) 1761 ))
1382 { 1762 {
1383 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1763 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1384 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1764 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1385 1765
1386 prev->cctx = 0;
1387
1388 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1766 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1389 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1767 /* without this the next cctx_get might destroy the running cctx while still in use */
1390 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1768 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1391 if (!next->cctx) 1769 if (ecb_expect_true (!next->cctx))
1392 next->cctx = cctx_get (aTHX); 1770 next->cctx = cctx_get (aTHX);
1393 1771
1394 cctx_put (prev__cctx); 1772 cctx_put (cctx_current);
1395 } 1773 }
1774 else
1775 prev->cctx = cctx_current;
1396 1776
1397 ++next->usecount; 1777 ++next->usecount;
1398 1778
1399 if (expect_true (!next->cctx)) 1779 cctx_prev = cctx_current;
1400 next->cctx = cctx_get (aTHX); 1780 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1401 1781
1402 if (expect_false (prev__cctx != next->cctx)) 1782 next->cctx = 0;
1783
1784 if (ecb_expect_false (cctx_prev != cctx_current))
1403 { 1785 {
1404 prev__cctx->top_env = PL_top_env; 1786 cctx_prev->top_env = PL_top_env;
1405 PL_top_env = next->cctx->top_env; 1787 PL_top_env = cctx_current->top_env;
1406 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1788 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1407 } 1789 }
1408 1790
1409 transfer_tail (aTHX); 1791 transfer_tail (aTHX);
1410 } 1792 }
1411} 1793}
… …
1413#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1795#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1414#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1796#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1415 1797
1416/** high level stuff ********************************************************/ 1798/** high level stuff ********************************************************/
1417 1799
1800/* this function is actually Coro, not Coro::State, but we call it from here */
1801/* because it is convenient - but it hasn't been declared yet for that reason */
1418static int 1802static void
1803coro_call_on_destroy (pTHX_ struct coro *coro);
1804
1805static void
1419coro_state_destroy (pTHX_ struct coro *coro) 1806coro_state_destroy (pTHX_ struct coro *coro)
1420{ 1807{
1421 if (coro->flags & CF_DESTROYED) 1808 if (coro->flags & CF_ZOMBIE)
1422 return 0; 1809 return;
1423 1810
1424 if (coro->on_destroy)
1425 coro->on_destroy (aTHX_ coro); 1811 slf_destroy (aTHX_ coro);
1426 1812
1427 coro->flags |= CF_DESTROYED; 1813 coro->flags |= CF_ZOMBIE;
1428 1814
1429 if (coro->flags & CF_READY) 1815 if (coro->flags & CF_READY)
1430 { 1816 {
1431 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1817 /* reduce nready, as destroying a ready coro effectively unreadies it */
1432 /* alternative: look through all ready queues and remove the coro */ 1818 /* alternative: look through all ready queues and remove the coro */
1433 --coro_nready; 1819 --coro_nready;
1434 } 1820 }
1435 else 1821 else
1436 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1822 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1437 1823
1438 if (coro->mainstack && coro->mainstack != main_mainstack) 1824 if (coro->next) coro->next->prev = coro->prev;
1439 { 1825 if (coro->prev) coro->prev->next = coro->next;
1440 struct coro temp; 1826 if (coro == coro_first) coro_first = coro->next;
1441 1827
1442 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1828 if (coro->mainstack
1443 1829 && coro->mainstack != main_mainstack
1444 save_perl (aTHX_ &temp); 1830 && coro->slot
1831 && !PL_dirty)
1445 load_perl (aTHX_ coro); 1832 destroy_perl (aTHX_ coro);
1446
1447 coro_destruct (aTHX_ coro);
1448
1449 load_perl (aTHX_ &temp);
1450
1451 coro->slot = 0;
1452 }
1453 1833
1454 cctx_destroy (coro->cctx); 1834 cctx_destroy (coro->cctx);
1455 SvREFCNT_dec (coro->startcv); 1835 SvREFCNT_dec (coro->startcv);
1456 SvREFCNT_dec (coro->args); 1836 SvREFCNT_dec (coro->args);
1837 SvREFCNT_dec (coro->swap_sv);
1457 SvREFCNT_dec (CORO_THROW); 1838 SvREFCNT_dec (CORO_THROW);
1458 1839
1459 if (coro->next) coro->next->prev = coro->prev; 1840 coro_call_on_destroy (aTHX_ coro);
1460 if (coro->prev) coro->prev->next = coro->next;
1461 if (coro == coro_first) coro_first = coro->next;
1462 1841
1463 return 1; 1842 /* more destruction mayhem in coro_state_free */
1464} 1843}
1465 1844
1466static int 1845static int
1467coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1846coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1468{ 1847{
1469 struct coro *coro = (struct coro *)mg->mg_ptr; 1848 struct coro *coro = (struct coro *)mg->mg_ptr;
1470 mg->mg_ptr = 0; 1849 mg->mg_ptr = 0;
1471 1850
1472 coro->hv = 0;
1473
1474 if (--coro->refcnt < 0)
1475 {
1476 coro_state_destroy (aTHX_ coro); 1851 coro_state_destroy (aTHX_ coro);
1852 SvREFCNT_dec (coro->on_destroy);
1853 SvREFCNT_dec (coro->status);
1854
1477 Safefree (coro); 1855 Safefree (coro);
1478 }
1479 1856
1480 return 0; 1857 return 0;
1481} 1858}
1482 1859
1483static int 1860static int ecb_cold
1484coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1861coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1485{ 1862{
1486 struct coro *coro = (struct coro *)mg->mg_ptr; 1863 /* called when perl clones the current process the slow way (windows process emulation) */
1487 1864 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1488 ++coro->refcnt; 1865 mg->mg_ptr = 0;
1866 mg->mg_virtual = 0;
1489 1867
1490 return 0; 1868 return 0;
1491} 1869}
1492 1870
1493static MGVTBL coro_state_vtbl = { 1871static MGVTBL coro_state_vtbl = {
… …
1516 1894
1517 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1895 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1518 TRANSFER (ta, 1); 1896 TRANSFER (ta, 1);
1519} 1897}
1520 1898
1521/*****************************************************************************/
1522/* gensub: simple closure generation utility */
1523
1524#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1525
1526/* create a closure from XS, returns a code reference */
1527/* the arg can be accessed via GENSUB_ARG from the callback */
1528/* the callback must use dXSARGS/XSRETURN */
1529static SV *
1530gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1531{
1532 CV *cv = (CV *)newSV (0);
1533
1534 sv_upgrade ((SV *)cv, SVt_PVCV);
1535
1536 CvANON_on (cv);
1537 CvISXSUB_on (cv);
1538 CvXSUB (cv) = xsub;
1539 GENSUB_ARG = arg;
1540
1541 return newRV_noinc ((SV *)cv);
1542}
1543
1544/** Coro ********************************************************************/ 1899/** Coro ********************************************************************/
1545 1900
1546INLINE void 1901ecb_inline void
1547coro_enq (pTHX_ struct coro *coro) 1902coro_enq (pTHX_ struct coro *coro)
1548{ 1903{
1549 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1904 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1550}
1551 1905
1552INLINE SV * 1906 SvREFCNT_inc_NN (coro->hv);
1907
1908 coro->next_ready = 0;
1909 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1910 ready [1] = coro;
1911}
1912
1913ecb_inline struct coro *
1553coro_deq (pTHX) 1914coro_deq (pTHX)
1554{ 1915{
1555 int prio; 1916 int prio;
1556 1917
1557 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1918 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1558 if (AvFILLp (coro_ready [prio]) >= 0) 1919 {
1559 return av_shift (coro_ready [prio]); 1920 struct coro **ready = coro_ready [prio];
1921
1922 if (ready [0])
1923 {
1924 struct coro *coro = ready [0];
1925 ready [0] = coro->next_ready;
1926 return coro;
1927 }
1928 }
1560 1929
1561 return 0; 1930 return 0;
1931}
1932
1933static void
1934invoke_sv_ready_hook_helper (void)
1935{
1936 dTHX;
1937 dSP;
1938
1939 ENTER;
1940 SAVETMPS;
1941
1942 PUSHMARK (SP);
1943 PUTBACK;
1944 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1945
1946 FREETMPS;
1947 LEAVE;
1562} 1948}
1563 1949
1564static int 1950static int
1565api_ready (pTHX_ SV *coro_sv) 1951api_ready (pTHX_ SV *coro_sv)
1566{ 1952{
1567 struct coro *coro;
1568 SV *sv_hook;
1569 void (*xs_hook)(void);
1570
1571 if (SvROK (coro_sv))
1572 coro_sv = SvRV (coro_sv);
1573
1574 coro = SvSTATE (coro_sv); 1953 struct coro *coro = SvSTATE (coro_sv);
1575 1954
1576 if (coro->flags & CF_READY) 1955 if (coro->flags & CF_READY)
1577 return 0; 1956 return 0;
1578 1957
1579 coro->flags |= CF_READY; 1958 coro->flags |= CF_READY;
1580 1959
1581 sv_hook = coro_nready ? 0 : coro_readyhook;
1582 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1583
1584 coro_enq (aTHX_ coro); 1960 coro_enq (aTHX_ coro);
1585 ++coro_nready;
1586 1961
1587 if (sv_hook) 1962 if (!coro_nready++)
1588 { 1963 if (coroapi.readyhook)
1589 dSP; 1964 coroapi.readyhook ();
1590
1591 ENTER;
1592 SAVETMPS;
1593
1594 PUSHMARK (SP);
1595 PUTBACK;
1596 call_sv (sv_hook, G_VOID | G_DISCARD);
1597
1598 FREETMPS;
1599 LEAVE;
1600 }
1601
1602 if (xs_hook)
1603 xs_hook ();
1604 1965
1605 return 1; 1966 return 1;
1606} 1967}
1607 1968
1608static int 1969static int
1609api_is_ready (pTHX_ SV *coro_sv) 1970api_is_ready (pTHX_ SV *coro_sv)
1610{ 1971{
1611 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1972 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1612} 1973}
1613 1974
1614INLINE void 1975/* expects to own a reference to next->hv */
1976ecb_inline void
1615prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1977prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1616{ 1978{
1617 SV *prev_sv, *next_sv;
1618
1619 for (;;)
1620 {
1621 next_sv = coro_deq (aTHX);
1622
1623 /* nothing to schedule: call the idle handler */
1624 if (expect_false (!next_sv))
1625 {
1626 dSP;
1627
1628 ENTER;
1629 SAVETMPS;
1630
1631 PUSHMARK (SP);
1632 PUTBACK;
1633 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1634
1635 FREETMPS;
1636 LEAVE;
1637 continue;
1638 }
1639
1640 ta->next = SvSTATE_hv (next_sv);
1641
1642 /* cannot transfer to destroyed coros, skip and look for next */
1643 if (expect_false (ta->next->flags & CF_DESTROYED))
1644 {
1645 SvREFCNT_dec (next_sv);
1646 /* coro_nready has already been taken care of by destroy */
1647 continue;
1648 }
1649
1650 --coro_nready;
1651 break;
1652 }
1653
1654 /* free this only after the transfer */
1655 prev_sv = SvRV (coro_current); 1979 SV *prev_sv = SvRV (coro_current);
1980
1656 ta->prev = SvSTATE_hv (prev_sv); 1981 ta->prev = SvSTATE_hv (prev_sv);
1982 ta->next = next;
1983
1657 TRANSFER_CHECK (*ta); 1984 TRANSFER_CHECK (*ta);
1658 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1985
1659 ta->next->flags &= ~CF_READY;
1660 SvRV_set (coro_current, next_sv); 1986 SvRV_set (coro_current, (SV *)next->hv);
1661 1987
1662 free_coro_mortal (aTHX); 1988 free_coro_mortal (aTHX);
1663 coro_mortal = prev_sv; 1989 coro_mortal = prev_sv;
1664} 1990}
1665 1991
1666INLINE void 1992static void
1993prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1994{
1995 for (;;)
1996 {
1997 struct coro *next = coro_deq (aTHX);
1998
1999 if (ecb_expect_true (next))
2000 {
2001 /* cannot transfer to destroyed coros, skip and look for next */
2002 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
2003 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
2004 else
2005 {
2006 next->flags &= ~CF_READY;
2007 --coro_nready;
2008
2009 prepare_schedule_to (aTHX_ ta, next);
2010 break;
2011 }
2012 }
2013 else
2014 {
2015 /* nothing to schedule: call the idle handler */
2016 if (SvROK (sv_idle)
2017 && SvOBJECT (SvRV (sv_idle)))
2018 {
2019 if (SvRV (sv_idle) == SvRV (coro_current))
2020 {
2021 require_pv ("Carp");
2022
2023 {
2024 dSP;
2025
2026 ENTER;
2027 SAVETMPS;
2028
2029 PUSHMARK (SP);
2030 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
2031 PUTBACK;
2032 call_pv ("Carp::confess", G_VOID | G_DISCARD);
2033
2034 FREETMPS;
2035 LEAVE;
2036 }
2037 }
2038
2039 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
2040 api_ready (aTHX_ SvRV (sv_idle));
2041 --coro_nready;
2042 }
2043 else
2044 {
2045 /* TODO: deprecated, remove, cannot work reliably *//*D*/
2046 dSP;
2047
2048 ENTER;
2049 SAVETMPS;
2050
2051 PUSHMARK (SP);
2052 PUTBACK;
2053 call_sv (sv_idle, G_VOID | G_DISCARD);
2054
2055 FREETMPS;
2056 LEAVE;
2057 }
2058 }
2059 }
2060}
2061
2062ecb_inline void
1667prepare_cede (pTHX_ struct coro_transfer_args *ta) 2063prepare_cede (pTHX_ struct coro_transfer_args *ta)
1668{ 2064{
1669 api_ready (aTHX_ coro_current); 2065 api_ready (aTHX_ coro_current);
1670 prepare_schedule (aTHX_ ta); 2066 prepare_schedule (aTHX_ ta);
1671} 2067}
1672 2068
1673INLINE void 2069ecb_inline void
1674prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2070prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1675{ 2071{
1676 SV *prev = SvRV (coro_current); 2072 SV *prev = SvRV (coro_current);
1677 2073
1678 if (coro_nready) 2074 if (coro_nready)
… …
1691 2087
1692 prepare_schedule (aTHX_ &ta); 2088 prepare_schedule (aTHX_ &ta);
1693 TRANSFER (ta, 1); 2089 TRANSFER (ta, 1);
1694} 2090}
1695 2091
2092static void
2093api_schedule_to (pTHX_ SV *coro_sv)
2094{
2095 struct coro_transfer_args ta;
2096 struct coro *next = SvSTATE (coro_sv);
2097
2098 SvREFCNT_inc_NN (coro_sv);
2099 prepare_schedule_to (aTHX_ &ta, next);
2100}
2101
1696static int 2102static int
1697api_cede (pTHX) 2103api_cede (pTHX)
1698{ 2104{
1699 struct coro_transfer_args ta; 2105 struct coro_transfer_args ta;
1700 2106
1701 prepare_cede (aTHX_ &ta); 2107 prepare_cede (aTHX_ &ta);
1702 2108
1703 if (expect_true (ta.prev != ta.next)) 2109 if (ecb_expect_true (ta.prev != ta.next))
1704 { 2110 {
1705 TRANSFER (ta, 1); 2111 TRANSFER (ta, 1);
1706 return 1; 2112 return 1;
1707 } 2113 }
1708 else 2114 else
… …
1727static void 2133static void
1728api_trace (pTHX_ SV *coro_sv, int flags) 2134api_trace (pTHX_ SV *coro_sv, int flags)
1729{ 2135{
1730 struct coro *coro = SvSTATE (coro_sv); 2136 struct coro *coro = SvSTATE (coro_sv);
1731 2137
2138 if (coro->flags & CF_RUNNING)
2139 croak ("cannot enable tracing on a running coroutine, caught");
2140
1732 if (flags & CC_TRACE) 2141 if (flags & CC_TRACE)
1733 { 2142 {
1734 if (!coro->cctx) 2143 if (!coro->cctx)
1735 coro->cctx = cctx_new_run (); 2144 coro->cctx = cctx_new_run ();
1736 else if (!(coro->cctx->flags & CC_TRACE)) 2145 else if (!(coro->cctx->flags & CC_TRACE))
1737 croak ("cannot enable tracing on coroutine with custom stack,"); 2146 croak ("cannot enable tracing on coroutine with custom stack, caught");
1738 2147
1739 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2148 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1740 } 2149 }
1741 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2150 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1742 { 2151 {
… …
1745 if (coro->flags & CF_RUNNING) 2154 if (coro->flags & CF_RUNNING)
1746 PL_runops = RUNOPS_DEFAULT; 2155 PL_runops = RUNOPS_DEFAULT;
1747 else 2156 else
1748 coro->slot->runops = RUNOPS_DEFAULT; 2157 coro->slot->runops = RUNOPS_DEFAULT;
1749 } 2158 }
2159}
2160
2161static void
2162coro_push_av (pTHX_ AV *av, I32 gimme_v)
2163{
2164 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2165 {
2166 dSP;
2167
2168 if (gimme_v == G_SCALAR)
2169 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2170 else
2171 {
2172 int i;
2173 EXTEND (SP, AvFILLp (av) + 1);
2174
2175 for (i = 0; i <= AvFILLp (av); ++i)
2176 PUSHs (AvARRAY (av)[i]);
2177 }
2178
2179 PUTBACK;
2180 }
2181}
2182
2183static void
2184coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2185{
2186 if (!coro->on_destroy)
2187 coro->on_destroy = newAV ();
2188
2189 av_push (coro->on_destroy, cb);
2190}
2191
2192static void
2193slf_destroy_join (pTHX_ struct CoroSLF *frame)
2194{
2195 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2196}
2197
2198static int
2199slf_check_join (pTHX_ struct CoroSLF *frame)
2200{
2201 struct coro *coro = (struct coro *)frame->data;
2202
2203 if (!coro->status)
2204 return 1;
2205
2206 frame->destroy = 0;
2207
2208 coro_push_av (aTHX_ coro->status, GIMME_V);
2209
2210 SvREFCNT_dec ((SV *)coro->hv);
2211
2212 return 0;
2213}
2214
2215static void
2216slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2217{
2218 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2219
2220 if (items > 1)
2221 croak ("join called with too many arguments");
2222
2223 if (coro->status)
2224 frame->prepare = prepare_nop;
2225 else
2226 {
2227 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2228 frame->prepare = prepare_schedule;
2229 }
2230
2231 frame->check = slf_check_join;
2232 frame->destroy = slf_destroy_join;
2233 frame->data = (void *)coro;
2234 SvREFCNT_inc (coro->hv);
2235}
2236
2237static void
2238coro_call_on_destroy (pTHX_ struct coro *coro)
2239{
2240 AV *od = coro->on_destroy;
2241
2242 if (!od)
2243 return;
2244
2245 coro->on_destroy = 0;
2246 sv_2mortal ((SV *)od);
2247
2248 while (AvFILLp (od) >= 0)
2249 {
2250 SV *cb = sv_2mortal (av_pop (od));
2251
2252 /* coro hv's (and only hv's at the moment) are supported as well */
2253 if (SvSTATEhv_p (aTHX_ cb))
2254 api_ready (aTHX_ cb);
2255 else
2256 {
2257 dSP; /* don't disturb outer sp */
2258 PUSHMARK (SP);
2259
2260 if (coro->status)
2261 {
2262 PUTBACK;
2263 coro_push_av (aTHX_ coro->status, G_ARRAY);
2264 SPAGAIN;
2265 }
2266
2267 PUTBACK;
2268 call_sv (cb, G_VOID | G_DISCARD);
2269 }
2270 }
2271}
2272
2273static void
2274coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2275{
2276 AV *av;
2277
2278 if (coro->status)
2279 {
2280 av = coro->status;
2281 av_clear (av);
2282 }
2283 else
2284 av = coro->status = newAV ();
2285
2286 /* items are actually not so common, so optimise for this case */
2287 if (items)
2288 {
2289 int i;
2290
2291 av_extend (av, items - 1);
2292
2293 for (i = 0; i < items; ++i)
2294 av_push (av, SvREFCNT_inc_NN (arg [i]));
2295 }
2296}
2297
2298static void
2299slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2300{
2301 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2302 api_ready (aTHX_ sv_manager);
2303
2304 frame->prepare = prepare_schedule;
2305 frame->check = slf_check_repeat;
2306
2307 /* as a minor optimisation, we could unwind all stacks here */
2308 /* but that puts extra pressure on pp_slf, and is not worth much */
2309 /*coro_unwind_stacks (aTHX);*/
2310}
2311
2312static void
2313slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2314{
2315 HV *coro_hv = (HV *)SvRV (coro_current);
2316
2317 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2318 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2319}
2320
2321static void
2322slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2323{
2324 HV *coro_hv;
2325 struct coro *coro;
2326
2327 if (items <= 0)
2328 croak ("Coro::cancel called without coro object,");
2329
2330 coro = SvSTATE (arg [0]);
2331 coro_hv = coro->hv;
2332
2333 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2334
2335 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2336 {
2337 /* coro currently busy cancelling something, so just notify it */
2338 coro->slf_frame.data = (void *)coro;
2339
2340 frame->prepare = prepare_nop;
2341 frame->check = slf_check_nop;
2342 }
2343 else if (coro_hv == (HV *)SvRV (coro_current))
2344 {
2345 /* cancelling the current coro is allowed, and equals terminate */
2346 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2347 }
2348 else
2349 {
2350 struct coro *self = SvSTATE_current;
2351
2352 if (!self)
2353 croak ("Coro::cancel called outside of thread content,");
2354
2355 /* otherwise we cancel directly, purely for speed reasons
2356 * unfortunately, this requires some magic trickery, as
2357 * somebody else could cancel us, so we have to fight the cancellation.
2358 * this is ugly, and hopefully fully worth the extra speed.
2359 * besides, I can't get the slow-but-safe version working...
2360 */
2361 slf_frame.data = 0;
2362 self->flags |= CF_NOCANCEL;
2363 coro_state_destroy (aTHX_ coro);
2364 self->flags &= ~CF_NOCANCEL;
2365
2366 if (slf_frame.data)
2367 {
2368 /* while we were busy we have been cancelled, so terminate */
2369 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2370 }
2371 else
2372 {
2373 frame->prepare = prepare_nop;
2374 frame->check = slf_check_nop;
2375 }
2376 }
2377}
2378
2379static int
2380slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2381{
2382 frame->prepare = 0;
2383 coro_unwind_stacks (aTHX);
2384
2385 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2386
2387 return 1;
2388}
2389
2390static int
2391safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2392{
2393 if (coro->cctx)
2394 croak ("coro inside C callback, unable to cancel at this time, caught");
2395
2396 if (coro->flags & (CF_NEW | CF_ZOMBIE))
2397 {
2398 coro_set_status (aTHX_ coro, arg, items);
2399 coro_state_destroy (aTHX_ coro);
2400 }
2401 else
2402 {
2403 if (!coro->slf_frame.prepare)
2404 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2405
2406 slf_destroy (aTHX_ coro);
2407
2408 coro_set_status (aTHX_ coro, arg, items);
2409 coro->slf_frame.prepare = prepare_nop;
2410 coro->slf_frame.check = slf_check_safe_cancel;
2411
2412 api_ready (aTHX_ (SV *)coro->hv);
2413 }
2414
2415 return 1;
1750} 2416}
1751 2417
1752/*****************************************************************************/ 2418/*****************************************************************************/
1753/* async pool handler */ 2419/* async pool handler */
1754 2420
… …
1785slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2451slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1786{ 2452{
1787 HV *hv = (HV *)SvRV (coro_current); 2453 HV *hv = (HV *)SvRV (coro_current);
1788 struct coro *coro = SvSTATE_hv ((SV *)hv); 2454 struct coro *coro = SvSTATE_hv ((SV *)hv);
1789 2455
1790 if (expect_true (coro->saved_deffh)) 2456 if (ecb_expect_true (coro->saved_deffh))
1791 { 2457 {
1792 /* subsequent iteration */ 2458 /* subsequent iteration */
1793 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2459 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1794 coro->saved_deffh = 0; 2460 coro->saved_deffh = 0;
1795 2461
1796 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) 2462 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1797 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2463 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1798 { 2464 {
1799 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); 2465 slf_init_terminate_cancel_common (aTHX_ frame, hv);
1800 coro->invoke_av = newAV (); 2466 return;
1801
1802 frame->prepare = prepare_nop;
1803 } 2467 }
1804 else 2468 else
1805 { 2469 {
1806 av_clear (GvAV (PL_defgv)); 2470 av_clear (GvAV (PL_defgv));
1807 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); 2471 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1808 2472
2473 if (ecb_expect_false (coro->swap_sv))
2474 {
2475 SWAP_SVS_LEAVE (coro);
2476 SvREFCNT_dec_NN (coro->swap_sv);
2477 coro->swap_sv = 0;
2478 }
2479
1809 coro->prio = 0; 2480 coro->prio = 0;
1810 2481
1811 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 2482 if (ecb_expect_false (coro->cctx) && ecb_expect_false (coro->cctx->flags & CC_TRACE))
1812 api_trace (aTHX_ coro_current, 0); 2483 api_trace (aTHX_ coro_current, 0);
1813 2484
1814 frame->prepare = prepare_schedule; 2485 frame->prepare = prepare_schedule;
1815 av_push (av_async_pool, SvREFCNT_inc (hv)); 2486 av_push (av_async_pool, SvREFCNT_inc (hv));
1816 } 2487 }
… …
1832 2503
1833static void 2504static void
1834coro_rouse_callback (pTHX_ CV *cv) 2505coro_rouse_callback (pTHX_ CV *cv)
1835{ 2506{
1836 dXSARGS; 2507 dXSARGS;
1837 SV *data = (SV *)GENSUB_ARG; 2508 SV *data = (SV *)S_GENSUB_ARG;
1838 2509
1839 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2510 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1840 { 2511 {
1841 /* first call, set args */ 2512 /* first call, set args */
2513 SV *coro = SvRV (data);
1842 AV *av = newAV (); 2514 AV *av = newAV ();
1843 SV *coro = SvRV (data);
1844 2515
1845 SvRV_set (data, (SV *)av); 2516 SvRV_set (data, (SV *)av);
1846 api_ready (aTHX_ coro);
1847 SvREFCNT_dec (coro);
1848 2517
1849 /* better take a full copy of the arguments */ 2518 /* better take a full copy of the arguments */
1850 while (items--) 2519 while (items--)
1851 av_store (av, items, newSVsv (ST (items))); 2520 av_store (av, items, newSVsv (ST (items)));
2521
2522 api_ready (aTHX_ coro);
2523 SvREFCNT_dec (coro);
1852 } 2524 }
1853 2525
1854 XSRETURN_EMPTY; 2526 XSRETURN_EMPTY;
1855} 2527}
1856 2528
1857static int 2529static int
1858slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2530slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1859{ 2531{
1860 SV *data = (SV *)frame->data; 2532 SV *data = (SV *)frame->data;
1861 2533
1862 if (CORO_THROW) 2534 if (CORO_THROW)
1863 return 0; 2535 return 0;
1864 2536
1865 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2537 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1866 return 1; 2538 return 1;
… …
1873 2545
1874 EXTEND (SP, AvFILLp (av) + 1); 2546 EXTEND (SP, AvFILLp (av) + 1);
1875 for (i = 0; i <= AvFILLp (av); ++i) 2547 for (i = 0; i <= AvFILLp (av); ++i)
1876 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2548 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1877 2549
1878 /* we have stolen the elements, so ste length to zero and free */ 2550 /* we have stolen the elements, so set length to zero and free */
1879 AvFILLp (av) = -1; 2551 AvFILLp (av) = -1;
1880 av_undef (av); 2552 av_undef (av);
1881 2553
1882 PUTBACK; 2554 PUTBACK;
1883 } 2555 }
… …
1902 cb = sv_2mortal (coro->rouse_cb); 2574 cb = sv_2mortal (coro->rouse_cb);
1903 coro->rouse_cb = 0; 2575 coro->rouse_cb = 0;
1904 } 2576 }
1905 2577
1906 if (!SvROK (cb) 2578 if (!SvROK (cb)
1907 || SvTYPE (SvRV (cb)) != SVt_PVCV 2579 || SvTYPE (SvRV (cb)) != SVt_PVCV
1908 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2580 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1909 croak ("Coro::rouse_wait called with illegal callback argument,"); 2581 croak ("Coro::rouse_wait called with illegal callback argument,");
1910 2582
1911 { 2583 {
1912 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2584 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1913 SV *data = (SV *)GENSUB_ARG; 2585 SV *data = (SV *)S_GENSUB_ARG;
1914 2586
1915 frame->data = (void *)data; 2587 frame->data = (void *)data;
1916 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2588 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1917 frame->check = slf_check_rouse_wait; 2589 frame->check = slf_check_rouse_wait;
1918 } 2590 }
… …
1922coro_new_rouse_cb (pTHX) 2594coro_new_rouse_cb (pTHX)
1923{ 2595{
1924 HV *hv = (HV *)SvRV (coro_current); 2596 HV *hv = (HV *)SvRV (coro_current);
1925 struct coro *coro = SvSTATE_hv (hv); 2597 struct coro *coro = SvSTATE_hv (hv);
1926 SV *data = newRV_inc ((SV *)hv); 2598 SV *data = newRV_inc ((SV *)hv);
1927 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2599 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1928 2600
1929 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2601 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1930 SvREFCNT_dec (data); /* magicext increases the refcount */ 2602 SvREFCNT_dec (data); /* magicext increases the refcount */
1931 2603
1932 SvREFCNT_dec (coro->rouse_cb); 2604 SvREFCNT_dec (coro->rouse_cb);
… …
1990 frame->prepare = prepare_schedule; 2662 frame->prepare = prepare_schedule;
1991 frame->check = slf_check_nop; 2663 frame->check = slf_check_nop;
1992} 2664}
1993 2665
1994static void 2666static void
2667slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2668{
2669 struct coro *next = (struct coro *)slf_frame.data;
2670
2671 SvREFCNT_inc_NN (next->hv);
2672 prepare_schedule_to (aTHX_ ta, next);
2673}
2674
2675static void
2676slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2677{
2678 if (!items)
2679 croak ("Coro::schedule_to expects a coroutine argument, caught");
2680
2681 frame->data = (void *)SvSTATE (arg [0]);
2682 frame->prepare = slf_prepare_schedule_to;
2683 frame->check = slf_check_nop;
2684}
2685
2686static void
2687slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2688{
2689 api_ready (aTHX_ SvRV (coro_current));
2690
2691 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2692}
2693
2694static void
1995slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2695slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1996{ 2696{
1997 frame->prepare = prepare_cede; 2697 frame->prepare = prepare_cede;
1998 frame->check = slf_check_nop; 2698 frame->check = slf_check_nop;
1999} 2699}
… …
2001static void 2701static void
2002slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2702slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2003{ 2703{
2004 frame->prepare = prepare_cede_notself; 2704 frame->prepare = prepare_cede_notself;
2005 frame->check = slf_check_nop; 2705 frame->check = slf_check_nop;
2706}
2707
2708/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2709static void
2710slf_destroy (pTHX_ struct coro *coro)
2711{
2712 struct CoroSLF frame = coro->slf_frame;
2713
2714 /*
2715 * The on_destroy below most likely is from an SLF call.
2716 * Since by definition the SLF call will not finish when we destroy
2717 * the coro, we will have to force-finish it here, otherwise
2718 * cleanup functions cannot call SLF functions.
2719 */
2720 coro->slf_frame.prepare = 0;
2721
2722 /* this callback is reserved for slf functions needing to do cleanup */
2723 if (frame.destroy && frame.prepare && !PL_dirty)
2724 frame.destroy (aTHX_ &frame);
2006} 2725}
2007 2726
2008/* 2727/*
2009 * these not obviously related functions are all rolled into one 2728 * these not obviously related functions are all rolled into one
2010 * function to increase chances that they all will call transfer with the same 2729 * function to increase chances that they all will call transfer with the same
… …
2017 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2736 I32 checkmark; /* mark SP to see how many elements check has pushed */
2018 2737
2019 /* set up the slf frame, unless it has already been set-up */ 2738 /* set up the slf frame, unless it has already been set-up */
2020 /* the latter happens when a new coro has been started */ 2739 /* the latter happens when a new coro has been started */
2021 /* or when a new cctx was attached to an existing coroutine */ 2740 /* or when a new cctx was attached to an existing coroutine */
2022 if (expect_true (!slf_frame.prepare)) 2741 if (ecb_expect_true (!slf_frame.prepare))
2023 { 2742 {
2024 /* first iteration */ 2743 /* first iteration */
2025 dSP; 2744 dSP;
2026 SV **arg = PL_stack_base + TOPMARK + 1; 2745 SV **arg = PL_stack_base + TOPMARK + 1;
2027 int items = SP - arg; /* args without function object */ 2746 int items = SP - arg; /* args without function object */
… …
2068 while (slf_frame.check (aTHX_ &slf_frame)); 2787 while (slf_frame.check (aTHX_ &slf_frame));
2069 2788
2070 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2789 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2071 2790
2072 /* exception handling */ 2791 /* exception handling */
2073 if (expect_false (CORO_THROW)) 2792 if (ecb_expect_false (CORO_THROW))
2074 { 2793 {
2075 SV *exception = sv_2mortal (CORO_THROW); 2794 SV *exception = sv_2mortal (CORO_THROW);
2076 2795
2077 CORO_THROW = 0; 2796 CORO_THROW = 0;
2078 sv_setsv (ERRSV, exception); 2797 sv_setsv (ERRSV, exception);
2079 croak (0); 2798 croak (0);
2080 } 2799 }
2081 2800
2082 /* return value handling - mostly like entersub */ 2801 /* return value handling - mostly like entersub */
2083 /* make sure we put something on the stack in scalar context */ 2802 /* make sure we put something on the stack in scalar context */
2084 if (GIMME_V == G_SCALAR) 2803 if (GIMME_V == G_SCALAR
2804 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2085 { 2805 {
2086 dSP; 2806 dSP;
2087 SV **bot = PL_stack_base + checkmark; 2807 SV **bot = PL_stack_base + checkmark;
2088 2808
2089 if (sp == bot) /* too few, push undef */ 2809 if (sp == bot) /* too few, push undef */
2090 bot [1] = &PL_sv_undef; 2810 bot [1] = &PL_sv_undef;
2091 else if (sp != bot + 1) /* too many, take last one */ 2811 else /* too many, take last one */
2092 bot [1] = *sp; 2812 bot [1] = *sp;
2093 2813
2094 SP = bot + 1; 2814 SP = bot + 1;
2095 2815
2096 PUTBACK; 2816 PUTBACK;
… …
2129 if (PL_op->op_flags & OPf_STACKED) 2849 if (PL_op->op_flags & OPf_STACKED)
2130 { 2850 {
2131 if (items > slf_arga) 2851 if (items > slf_arga)
2132 { 2852 {
2133 slf_arga = items; 2853 slf_arga = items;
2134 free (slf_argv); 2854 Safefree (slf_argv);
2135 slf_argv = malloc (slf_arga * sizeof (SV *)); 2855 New (0, slf_argv, slf_arga, SV *);
2136 } 2856 }
2137 2857
2138 slf_argc = items; 2858 slf_argc = items;
2139 2859
2140 for (i = 0; i < items; ++i) 2860 for (i = 0; i < items; ++i)
… …
2142 } 2862 }
2143 else 2863 else
2144 slf_argc = 0; 2864 slf_argc = 0;
2145 2865
2146 PL_op->op_ppaddr = pp_slf; 2866 PL_op->op_ppaddr = pp_slf;
2147 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2867 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2148 2868
2149 PL_op = (OP *)&slf_restore; 2869 PL_op = (OP *)&slf_restore;
2870}
2871
2872/*****************************************************************************/
2873/* dynamic wind */
2874
2875static void
2876on_enterleave_call (pTHX_ SV *cb)
2877{
2878 dSP;
2879
2880 PUSHSTACK;
2881
2882 PUSHMARK (SP);
2883 PUTBACK;
2884 call_sv (cb, G_VOID | G_DISCARD);
2885 SPAGAIN;
2886
2887 POPSTACK;
2888}
2889
2890static SV *
2891coro_avp_pop_and_free (pTHX_ AV **avp)
2892{
2893 AV *av = *avp;
2894 SV *res = av_pop (av);
2895
2896 if (AvFILLp (av) < 0)
2897 {
2898 *avp = 0;
2899 SvREFCNT_dec (av);
2900 }
2901
2902 return res;
2903}
2904
2905static void
2906coro_pop_on_enter (pTHX_ void *coro)
2907{
2908 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2909 SvREFCNT_dec (cb);
2910}
2911
2912static void
2913coro_pop_on_leave (pTHX_ void *coro)
2914{
2915 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2916 on_enterleave_call (aTHX_ sv_2mortal (cb));
2917}
2918
2919static void
2920enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2921{
2922 if (!hook)
2923 return;
2924
2925 if (!*avp)
2926 {
2927 *avp = newAV ();
2928 AvREAL_off (*avp);
2929 }
2930
2931 av_push (*avp, (SV *)hook);
2932 av_push (*avp, (SV *)arg);
2933}
2934
2935static void
2936enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2937{
2938 AV *av = *avp;
2939 int i;
2940
2941 if (!av)
2942 return;
2943
2944 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2945 if (AvARRAY (av)[i] == (SV *)hook)
2946 {
2947 if (execute)
2948 hook (aTHX_ (void *)AvARRAY (av)[i + 1]);
2949
2950 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2951 av_pop (av);
2952 av_pop (av);
2953 break;
2954 }
2955
2956 if (AvFILLp (av) >= 0)
2957 {
2958 *avp = 0;
2959 SvREFCNT_dec_NN (av);
2960 }
2961}
2962
2963static void
2964api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2965{
2966 struct coro *coro = SvSTATE (coro_sv);
2967
2968 if (SvSTATE_current == coro)
2969 if (enter)
2970 enter (aTHX_ enter_arg);
2971
2972 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2973 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2974}
2975
2976static void
2977api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2978{
2979 struct coro *coro = SvSTATE (coro_sv);
2980
2981 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2982 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2983}
2984
2985static void
2986savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2987{
2988 struct coro *coro = SvSTATE_current;
2989
2990 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2991}
2992
2993static void
2994savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2995{
2996 struct coro *coro = SvSTATE_current;
2997
2998 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2999}
3000
3001static void
3002api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
3003{
3004 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
3005
3006 /* this ought to be much cheaper than malloc + a single destructor call */
3007 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
3008 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2150} 3009}
2151 3010
2152/*****************************************************************************/ 3011/*****************************************************************************/
2153/* PerlIO::cede */ 3012/* PerlIO::cede */
2154 3013
… …
2156{ 3015{
2157 PerlIOBuf base; 3016 PerlIOBuf base;
2158 NV next, every; 3017 NV next, every;
2159} PerlIOCede; 3018} PerlIOCede;
2160 3019
2161static IV 3020static IV ecb_cold
2162PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 3021PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2163{ 3022{
2164 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3023 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2165 3024
2166 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 3025 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2167 self->next = nvtime () + self->every; 3026 self->next = nvtime () + self->every;
2168 3027
2169 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 3028 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2170} 3029}
2171 3030
2172static SV * 3031static SV * ecb_cold
2173PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 3032PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2174{ 3033{
2175 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 3034 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2176 3035
2177 return newSVnv (self->every); 3036 return newSVnv (self->every);
… …
2228/* Coro::Semaphore & Coro::Signal */ 3087/* Coro::Semaphore & Coro::Signal */
2229 3088
2230static SV * 3089static SV *
2231coro_waitarray_new (pTHX_ int count) 3090coro_waitarray_new (pTHX_ int count)
2232{ 3091{
2233 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3092 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2234 AV *av = newAV (); 3093 AV *av = newAV ();
2235 SV **ary; 3094 SV **ary;
2236 3095
2237 /* unfortunately, building manually saves memory */ 3096 /* unfortunately, building manually saves memory */
2238 Newx (ary, 2, SV *); 3097 Newx (ary, 2, SV *);
2239 AvALLOC (av) = ary; 3098 AvALLOC (av) = ary;
3099#if PERL_VERSION_ATLEAST (5,10,0)
2240 /*AvARRAY (av) = ary;*/ 3100 AvARRAY (av) = ary;
3101#else
2241 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 3102 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3103 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3104 SvPVX ((SV *)av) = (char *)ary;
3105#endif
2242 AvMAX (av) = 1; 3106 AvMAX (av) = 1;
2243 AvFILLp (av) = 0; 3107 AvFILLp (av) = 0;
2244 ary [0] = newSViv (count); 3108 ary [0] = newSViv (count);
2245 3109
2246 return newRV_noinc ((SV *)av); 3110 return newRV_noinc ((SV *)av);
… …
2279 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3143 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2280 PUTBACK; 3144 PUTBACK;
2281 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3145 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2282 } 3146 }
2283 3147
2284 SvREFCNT_dec (cb); 3148 SvREFCNT_dec_NN (cb);
2285 } 3149 }
2286} 3150}
2287 3151
2288static void 3152static void
2289coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3153coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2290{ 3154{
2291 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3155 /* call $sem->adjust (0) to possibly wake up some other waiters */
2292 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3156 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2293} 3157}
2294 3158
2295static int 3159static int
2296slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3160slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2297{ 3161{
2298 AV *av = (AV *)frame->data; 3162 AV *av = (AV *)frame->data;
2299 SV *count_sv = AvARRAY (av)[0]; 3163 SV *count_sv = AvARRAY (av)[0];
3164 SV *coro_hv = SvRV (coro_current);
3165
3166 frame->destroy = 0;
2300 3167
2301 /* if we are about to throw, don't actually acquire the lock, just throw */ 3168 /* if we are about to throw, don't actually acquire the lock, just throw */
2302 if (CORO_THROW) 3169 if (ecb_expect_false (CORO_THROW))
3170 {
3171 /* we still might be responsible for the semaphore, so wake up others */
3172 coro_semaphore_adjust (aTHX_ av, 0);
3173
2303 return 0; 3174 return 0;
3175 }
2304 else if (SvIVX (count_sv) > 0) 3176 else if (SvIVX (count_sv) > 0)
2305 { 3177 {
2306 SvSTATE_current->on_destroy = 0;
2307
2308 if (acquire) 3178 if (acquire)
2309 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3179 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2310 else 3180 else
2311 coro_semaphore_adjust (aTHX_ av, 0); 3181 coro_semaphore_adjust (aTHX_ av, 0);
2312 3182
… …
2316 { 3186 {
2317 int i; 3187 int i;
2318 /* if we were woken up but can't down, we look through the whole */ 3188 /* if we were woken up but can't down, we look through the whole */
2319 /* waiters list and only add us if we aren't in there already */ 3189 /* waiters list and only add us if we aren't in there already */
2320 /* this avoids some degenerate memory usage cases */ 3190 /* this avoids some degenerate memory usage cases */
2321 3191 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2322 for (i = 1; i <= AvFILLp (av); ++i)
2323 if (AvARRAY (av)[i] == SvRV (coro_current)) 3192 if (AvARRAY (av)[i] == coro_hv)
2324 return 1; 3193 return 1;
2325 3194
2326 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3195 av_push (av, SvREFCNT_inc (coro_hv));
2327 return 1; 3196 return 1;
2328 } 3197 }
2329} 3198}
2330 3199
2331static int 3200static int
… …
2354 { 3223 {
2355 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3224 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2356 3225
2357 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3226 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2358 frame->prepare = prepare_schedule; 3227 frame->prepare = prepare_schedule;
2359
2360 /* to avoid race conditions when a woken-up coro gets terminated */ 3228 /* to avoid race conditions when a woken-up coro gets terminated */
2361 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3229 /* we arrange for a temporary on_destroy that calls adjust (0) */
2362 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3230 frame->destroy = coro_semaphore_destroy;
2363 } 3231 }
2364} 3232}
2365 3233
2366static void 3234static void
2367slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3235slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2375{ 3243{
2376 if (items >= 2) 3244 if (items >= 2)
2377 { 3245 {
2378 /* callback form */ 3246 /* callback form */
2379 AV *av = (AV *)SvRV (arg [0]); 3247 AV *av = (AV *)SvRV (arg [0]);
2380 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); 3248 SV *cb_cv = s_get_cv_croak (arg [1]);
2381 3249
2382 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3250 av_push (av, SvREFCNT_inc_NN (cb_cv));
2383 3251
2384 if (SvIVX (AvARRAY (av)[0]) > 0) 3252 if (SvIVX (AvARRAY (av)[0]) > 0)
2385 coro_semaphore_adjust (aTHX_ av, 0); 3253 coro_semaphore_adjust (aTHX_ av, 0);
2386 3254
2387 frame->prepare = prepare_nop; 3255 frame->prepare = prepare_nop;
… …
2411 AvARRAY (av)[0] = AvARRAY (av)[1]; 3279 AvARRAY (av)[0] = AvARRAY (av)[1];
2412 AvARRAY (av)[1] = cb; 3280 AvARRAY (av)[1] = cb;
2413 3281
2414 cb = av_shift (av); 3282 cb = av_shift (av);
2415 3283
3284 if (SvTYPE (cb) == SVt_PVCV)
3285 {
3286 dSP;
3287 PUSHMARK (SP);
3288 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3289 PUTBACK;
3290 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3291 }
3292 else
3293 {
2416 api_ready (aTHX_ cb); 3294 api_ready (aTHX_ cb);
2417 sv_setiv (cb, 0); /* signal waiter */ 3295 sv_setiv (cb, 0); /* signal waiter */
3296 }
3297
2418 SvREFCNT_dec (cb); 3298 SvREFCNT_dec_NN (cb);
2419 3299
2420 --count; 3300 --count;
2421 } 3301 }
2422} 3302}
2423 3303
… …
2431static void 3311static void
2432slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3312slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2433{ 3313{
2434 AV *av = (AV *)SvRV (arg [0]); 3314 AV *av = (AV *)SvRV (arg [0]);
2435 3315
3316 if (items >= 2)
3317 {
3318 SV *cb_cv = s_get_cv_croak (arg [1]);
3319 av_push (av, SvREFCNT_inc_NN (cb_cv));
3320
2436 if (SvIVX (AvARRAY (av)[0])) 3321 if (SvIVX (AvARRAY (av)[0]))
3322 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3323
3324 frame->prepare = prepare_nop;
3325 frame->check = slf_check_nop;
3326 }
3327 else if (SvIVX (AvARRAY (av)[0]))
2437 { 3328 {
2438 SvIVX (AvARRAY (av)[0]) = 0; 3329 SvIVX (AvARRAY (av)[0]) = 0;
2439 frame->prepare = prepare_nop; 3330 frame->prepare = prepare_nop;
2440 frame->check = slf_check_nop; 3331 frame->check = slf_check_nop;
2441 } 3332 }
2442 else 3333 else
2443 { 3334 {
2444 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3335 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2445 3336
2446 av_push (av, waiter); 3337 av_push (av, waiter);
2447 3338
2448 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3339 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2449 frame->prepare = prepare_schedule; 3340 frame->prepare = prepare_schedule;
… …
2467 3358
2468static void 3359static void
2469coro_aio_callback (pTHX_ CV *cv) 3360coro_aio_callback (pTHX_ CV *cv)
2470{ 3361{
2471 dXSARGS; 3362 dXSARGS;
2472 AV *state = (AV *)GENSUB_ARG; 3363 AV *state = (AV *)S_GENSUB_ARG;
2473 SV *coro = av_pop (state); 3364 SV *coro = av_pop (state);
2474 SV *data_sv = newSV (sizeof (struct io_state)); 3365 SV *data_sv = newSV (sizeof (struct io_state));
2475 3366
2476 av_extend (state, items - 1); 3367 av_extend (state, items - 1);
2477 3368
… …
2497 } 3388 }
2498 3389
2499 av_push (state, data_sv); 3390 av_push (state, data_sv);
2500 3391
2501 api_ready (aTHX_ coro); 3392 api_ready (aTHX_ coro);
2502 SvREFCNT_dec (coro); 3393 SvREFCNT_dec_NN (coro);
2503 SvREFCNT_dec ((AV *)state); 3394 SvREFCNT_dec_NN ((AV *)state);
2504} 3395}
2505 3396
2506static int 3397static int
2507slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3398slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2508{ 3399{
… …
2513 /* it quickly returns */ 3404 /* it quickly returns */
2514 if (CORO_THROW) 3405 if (CORO_THROW)
2515 return 0; 3406 return 0;
2516 3407
2517 /* one element that is an RV? repeat! */ 3408 /* one element that is an RV? repeat! */
2518 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3409 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2519 return 1; 3410 return 1;
2520 3411
2521 /* restore status */ 3412 /* restore status */
2522 { 3413 {
2523 SV *data_sv = av_pop (state); 3414 SV *data_sv = av_pop (state);
… …
2526 errno = data->errorno; 3417 errno = data->errorno;
2527 PL_laststype = data->laststype; 3418 PL_laststype = data->laststype;
2528 PL_laststatval = data->laststatval; 3419 PL_laststatval = data->laststatval;
2529 PL_statcache = data->statcache; 3420 PL_statcache = data->statcache;
2530 3421
2531 SvREFCNT_dec (data_sv); 3422 SvREFCNT_dec_NN (data_sv);
2532 } 3423 }
2533 3424
2534 /* push result values */ 3425 /* push result values */
2535 { 3426 {
2536 dSP; 3427 dSP;
… …
2562 dSP; 3453 dSP;
2563 3454
2564 static SV *prio_cv; 3455 static SV *prio_cv;
2565 static SV *prio_sv; 3456 static SV *prio_sv;
2566 3457
2567 if (expect_false (!prio_cv)) 3458 if (ecb_expect_false (!prio_cv))
2568 { 3459 {
2569 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3460 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2570 prio_sv = newSViv (0); 3461 prio_sv = newSViv (0);
2571 } 3462 }
2572 3463
… …
2591 3482
2592 for (i = 0; i < items; ++i) 3483 for (i = 0; i < items; ++i)
2593 PUSHs (arg [i]); 3484 PUSHs (arg [i]);
2594 3485
2595 /* now push the callback closure */ 3486 /* now push the callback closure */
2596 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3487 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2597 3488
2598 /* now call the AIO function - we assume our request is uncancelable */ 3489 /* now call the AIO function - we assume our request is uncancelable */
2599 PUTBACK; 3490 PUTBACK;
2600 call_sv ((SV *)req, G_VOID | G_DISCARD); 3491 call_sv ((SV *)req, G_VOID | G_DISCARD);
2601 } 3492 }
2602 3493
2603 /* now that the requets is going, we loop toll we have a result */ 3494 /* now that the request is going, we loop till we have a result */
2604 frame->data = (void *)state; 3495 frame->data = (void *)state;
2605 frame->prepare = prepare_schedule; 3496 frame->prepare = prepare_schedule;
2606 frame->check = slf_check_aio_req; 3497 frame->check = slf_check_aio_req;
2607} 3498}
2608 3499
… …
2616 XSRETURN_EMPTY; 3507 XSRETURN_EMPTY;
2617} 3508}
2618 3509
2619/*****************************************************************************/ 3510/*****************************************************************************/
2620 3511
3512#if CORO_CLONE
3513# include "clone.c"
3514#endif
3515
3516/*****************************************************************************/
3517
3518static SV *
3519coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3520{
3521 SV *coro_sv;
3522 struct coro *coro;
3523 MAGIC *mg;
3524 HV *hv;
3525 SV *cb;
3526 int i;
3527
3528 if (argc > 0)
3529 {
3530 cb = s_get_cv_croak (argv [0]);
3531
3532 if (!is_coro)
3533 {
3534 if (CvISXSUB (cb))
3535 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3536
3537 if (!CvROOT (cb))
3538 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3539 }
3540 }
3541
3542 Newz (0, coro, 1, struct coro);
3543 coro->args = newAV ();
3544 coro->flags = CF_NEW;
3545
3546 if (coro_first) coro_first->prev = coro;
3547 coro->next = coro_first;
3548 coro_first = coro;
3549
3550 coro->hv = hv = newHV ();
3551 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3552 mg->mg_flags |= MGf_DUP;
3553 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3554
3555 if (argc > 0)
3556 {
3557 av_extend (coro->args, argc + is_coro - 1);
3558
3559 if (is_coro)
3560 {
3561 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3562 cb = (SV *)cv_coro_run;
3563 }
3564
3565 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3566
3567 for (i = 1; i < argc; i++)
3568 av_push (coro->args, newSVsv (argv [i]));
3569 }
3570
3571 return coro_sv;
3572}
3573
3574#ifndef __cplusplus
3575ecb_cold XS(boot_Coro__State);
3576#endif
3577
3578#if CORO_JIT
3579
3580static void ecb_noinline ecb_cold
3581pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3582{
3583 dSP;
3584 AV *av = newAV ();
3585
3586 av_store (av, 3, newSVuv (d));
3587 av_store (av, 2, newSVuv (c));
3588 av_store (av, 1, newSVuv (b));
3589 av_store (av, 0, newSVuv (a));
3590
3591 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3592
3593 PUTBACK;
3594}
3595
3596static void ecb_noinline ecb_cold
3597jit_init (pTHX)
3598{
3599 dSP;
3600 SV *load, *save;
3601 char *map_base;
3602 char *load_ptr, *save_ptr;
3603 STRLEN load_len, save_len, map_len;
3604 int count;
3605
3606 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3607
3608 PUSHMARK (SP);
3609 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3610 #include "state.h"
3611 count = call_pv ("Coro::State::_jit", G_ARRAY);
3612 SPAGAIN;
3613
3614 save = POPs; save_ptr = SvPVbyte (save, save_len);
3615 load = POPs; load_ptr = SvPVbyte (load, load_len);
3616
3617 map_len = load_len + save_len + 16;
3618
3619 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3620
3621 if (map_base == (char *)MAP_FAILED)
3622 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3623
3624 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3625
3626 load_perl_slots = (load_save_perl_slots_type)map_base;
3627 memcpy (map_base, load_ptr, load_len);
3628
3629 map_base += (load_len + 15) & ~15;
3630
3631 save_perl_slots = (load_save_perl_slots_type)map_base;
3632 memcpy (map_base, save_ptr, save_len);
3633
3634 /* we are good citizens and try to make the page read-only, so the evil evil */
3635 /* hackers might have it a bit more difficult */
3636 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3637
3638 PUTBACK;
3639 eval_pv ("undef &Coro::State::_jit", 1);
3640}
3641
3642#endif
3643
2621MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3644MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2622 3645
2623PROTOTYPES: DISABLE 3646PROTOTYPES: DISABLE
2624 3647
2625BOOT: 3648BOOT:
2626{ 3649{
3650#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3651#include "state.h"
2627#ifdef USE_ITHREADS 3652#ifdef USE_ITHREADS
2628# if CORO_PTHREAD 3653# if CORO_PTHREAD
2629 coro_thx = PERL_GET_CONTEXT; 3654 coro_thx = PERL_GET_CONTEXT;
2630# endif 3655# endif
2631#endif 3656#endif
2632 BOOT_PAGESIZE; 3657 /* perl defines these to check for existance first, but why it doesn't */
3658 /* just create them one at init time is not clear to me, except for */
3659 /* programs trying to delete them, but... */
3660 /* anyway, we declare this as invalid and make sure they are initialised here */
3661 DEFSV;
3662 ERRSV;
3663
3664 cctx_current = cctx_new_empty ();
2633 3665
2634 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3666 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2635 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3667 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2636 3668
2637 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3669 {
2638 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; 3670 /*
2639 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; 3671 * we provide a vtbvl for %SIG magic that replaces PL_vtbl_sig
3672 * by coro_sig_vtbl in hash values.
3673 */
3674 MAGIC *mg = mg_find ((SV *)GvHV (gv_fetchpv ("SIG", GV_ADD | GV_NOTQUAL, SVt_PVHV)), PERL_MAGIC_sig);
3675
3676 /* this only works if perl doesn't have a vtbl for %SIG */
3677 assert (!mg->mg_virtual);
3678
3679 /*
3680 * The irony is that the perl API itself asserts that mg_virtual
3681 * must be non-const, yet perl5porters insisted on marking their
3682 * vtbls as read-only, just to thwart perl modules from patching
3683 * them.
3684 */
3685 mg->mg_virtual = (MGVTBL *)&coro_sig_vtbl;
3686 mg->mg_flags |= MGf_COPY;
3687
3688 coro_sigelem_vtbl = PL_vtbl_sigelem;
3689 coro_sigelem_vtbl.svt_get = coro_sigelem_get;
3690 coro_sigelem_vtbl.svt_set = coro_sigelem_set;
3691 coro_sigelem_vtbl.svt_clear = coro_sigelem_clr;
3692 }
2640 3693
2641 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2642 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); 3694 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2643 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); 3695 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2644 3696
2645 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 3697 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
3698
3699 newCONSTSUB (coro_state_stash, "BACKEND", newSVpv (CORO_BACKEND, 0)); /* undocumented */
2646 3700
2647 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); 3701 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
2648 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); 3702 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
2649 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); 3703 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
2650 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); 3704 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
… …
2657 3711
2658 { 3712 {
2659 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3713 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2660 3714
2661 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3715 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2662 hv_store_ent (PL_custom_op_names, slf, 3716 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2663 newSVpv ("coro_slf", 0), 0);
2664 3717
2665 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3718 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2666 hv_store_ent (PL_custom_op_descs, slf, 3719 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2667 newSVpv ("coro schedule like function", 0), 0);
2668 } 3720 }
2669 3721
2670 coroapi.ver = CORO_API_VERSION; 3722 coroapi.ver = CORO_API_VERSION;
2671 coroapi.rev = CORO_API_REVISION; 3723 coroapi.rev = CORO_API_REVISION;
2672 3724
… …
2677 coroapi.prepare_nop = prepare_nop; 3729 coroapi.prepare_nop = prepare_nop;
2678 coroapi.prepare_schedule = prepare_schedule; 3730 coroapi.prepare_schedule = prepare_schedule;
2679 coroapi.prepare_cede = prepare_cede; 3731 coroapi.prepare_cede = prepare_cede;
2680 coroapi.prepare_cede_notself = prepare_cede_notself; 3732 coroapi.prepare_cede_notself = prepare_cede_notself;
2681 3733
2682 { 3734 time_init (aTHX);
2683 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2684 3735
2685 if (!svp) croak ("Time::HiRes is required");
2686 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2687
2688 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2689 }
2690
2691 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3736 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3737#if CORO_JIT
3738 PUTBACK;
3739 jit_init (aTHX);
3740 SPAGAIN;
3741#endif
2692} 3742}
2693 3743
2694SV * 3744SV *
2695new (char *klass, ...) 3745new (SV *klass, ...)
2696 ALIAS: 3746 ALIAS:
2697 Coro::new = 1 3747 Coro::new = 1
2698 CODE: 3748 CODE:
2699{ 3749 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2700 struct coro *coro; 3750 OUTPUT:
2701 MAGIC *mg;
2702 HV *hv;
2703 CV *cb;
2704 int i;
2705
2706 if (items > 1)
2707 {
2708 cb = coro_sv_2cv (aTHX_ ST (1));
2709
2710 if (!ix)
2711 {
2712 if (CvISXSUB (cb))
2713 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2714
2715 if (!CvROOT (cb))
2716 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2717 }
2718 }
2719
2720 Newz (0, coro, 1, struct coro);
2721 coro->args = newAV ();
2722 coro->flags = CF_NEW;
2723
2724 if (coro_first) coro_first->prev = coro;
2725 coro->next = coro_first;
2726 coro_first = coro;
2727
2728 coro->hv = hv = newHV ();
2729 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2730 mg->mg_flags |= MGf_DUP;
2731 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2732
2733 if (items > 1)
2734 {
2735 av_extend (coro->args, items - 1 + ix - 1);
2736
2737 if (ix)
2738 {
2739 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2740 cb = cv_coro_run;
2741 }
2742
2743 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2744
2745 for (i = 2; i < items; i++)
2746 av_push (coro->args, newSVsv (ST (i)));
2747 }
2748}
2749 OUTPUT:
2750 RETVAL 3751 RETVAL
2751 3752
2752void 3753void
2753transfer (...) 3754transfer (...)
2754 PROTOTYPE: $$ 3755 PROTOTYPE: $$
2755 CODE: 3756 CODE:
2756 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3757 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2757 3758
2758bool 3759SV *
2759_destroy (SV *coro_sv) 3760clone (Coro::State coro)
2760 CODE: 3761 CODE:
2761 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3762{
3763#if CORO_CLONE
3764 struct coro *ncoro = coro_clone (aTHX_ coro);
3765 MAGIC *mg;
3766 /* TODO: too much duplication */
3767 ncoro->hv = newHV ();
3768 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3769 mg->mg_flags |= MGf_DUP;
3770 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3771#else
3772 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3773#endif
3774}
2762 OUTPUT: 3775 OUTPUT:
2763 RETVAL 3776 RETVAL
2764
2765void
2766_exit (int code)
2767 PROTOTYPE: $
2768 CODE:
2769 _exit (code);
2770 3777
2771int 3778int
2772cctx_stacksize (int new_stacksize = 0) 3779cctx_stacksize (int new_stacksize = 0)
2773 PROTOTYPE: ;$ 3780 PROTOTYPE: ;$
2774 CODE: 3781 CODE:
… …
2810void 3817void
2811list () 3818list ()
2812 PROTOTYPE: 3819 PROTOTYPE:
2813 PPCODE: 3820 PPCODE:
2814{ 3821{
2815 struct coro *coro; 3822 struct coro *coro;
2816 for (coro = coro_first; coro; coro = coro->next) 3823 for (coro = coro_first; coro; coro = coro->next)
2817 if (coro->hv) 3824 if (coro->hv)
2818 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3825 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2819} 3826}
2820 3827
… …
2822call (Coro::State coro, SV *coderef) 3829call (Coro::State coro, SV *coderef)
2823 ALIAS: 3830 ALIAS:
2824 eval = 1 3831 eval = 1
2825 CODE: 3832 CODE:
2826{ 3833{
3834 struct coro *current = SvSTATE_current;
3835
2827 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3836 if ((coro == current) || (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)))
2828 { 3837 {
2829 struct coro temp; 3838 struct CoroSLF slf_save;
2830 3839
2831 if (!(coro->flags & CF_RUNNING)) 3840 if (current != coro)
2832 { 3841 {
2833 PUTBACK; 3842 PUTBACK;
2834 save_perl (aTHX_ &temp); 3843 save_perl (aTHX_ current);
2835 load_perl (aTHX_ coro); 3844 load_perl (aTHX_ coro);
3845 /* the coro is most likely in an active SLF call.
3846 * while not strictly required (the code we execute is
3847 * not allowed to call any SLF functions), it's cleaner
3848 * to reinitialise the slf_frame and restore it later.
3849 * This might one day allow us to actually do SLF calls
3850 * from code executed here.
3851 */
3852 slf_save = slf_frame;
3853 slf_frame.prepare = 0;
3854 SPAGAIN;
2836 } 3855 }
2837 3856
2838 {
2839 dSP;
2840 ENTER;
2841 SAVETMPS;
2842 PUTBACK;
2843 PUSHSTACK; 3857 PUSHSTACK;
3858
2844 PUSHMARK (SP); 3859 PUSHMARK (SP);
3860 PUTBACK;
2845 3861
2846 if (ix) 3862 if (ix)
2847 eval_sv (coderef, 0); 3863 eval_sv (coderef, 0);
2848 else 3864 else
2849 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3865 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2850 3866
2851 POPSTACK; 3867 POPSTACK;
2852 SPAGAIN; 3868 SPAGAIN;
2853 FREETMPS;
2854 LEAVE;
2855 PUTBACK;
2856 }
2857 3869
2858 if (!(coro->flags & CF_RUNNING)) 3870 if (current != coro)
2859 { 3871 {
3872 PUTBACK;
3873 slf_frame = slf_save;
2860 save_perl (aTHX_ coro); 3874 save_perl (aTHX_ coro);
2861 load_perl (aTHX_ &temp); 3875 load_perl (aTHX_ current);
2862 SPAGAIN; 3876 SPAGAIN;
2863 } 3877 }
2864 } 3878 }
2865} 3879}
2866 3880
… …
2869 PROTOTYPE: $ 3883 PROTOTYPE: $
2870 ALIAS: 3884 ALIAS:
2871 is_ready = CF_READY 3885 is_ready = CF_READY
2872 is_running = CF_RUNNING 3886 is_running = CF_RUNNING
2873 is_new = CF_NEW 3887 is_new = CF_NEW
2874 is_destroyed = CF_DESTROYED 3888 is_destroyed = CF_ZOMBIE
3889 is_zombie = CF_ZOMBIE
3890 is_suspended = CF_SUSPENDED
2875 CODE: 3891 CODE:
2876 RETVAL = boolSV (coro->flags & ix); 3892 RETVAL = boolSV (coro->flags & ix);
2877 OUTPUT: 3893 OUTPUT:
2878 RETVAL 3894 RETVAL
2879 3895
2880void 3896void
2881throw (Coro::State self, SV *throw = &PL_sv_undef) 3897throw (SV *self, SV *exception = &PL_sv_undef)
2882 PROTOTYPE: $;$ 3898 PROTOTYPE: $;$
2883 CODE: 3899 CODE:
2884{ 3900{
3901 struct coro *coro = SvSTATE (self);
2885 struct coro *current = SvSTATE_current; 3902 struct coro *current = SvSTATE_current;
2886 SV **throwp = self == current ? &CORO_THROW : &self->except; 3903 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2887 SvREFCNT_dec (*throwp); 3904 SvREFCNT_dec (*exceptionp);
2888 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3905 SvGETMAGIC (exception);
3906 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3907
3908 api_ready (aTHX_ self);
2889} 3909}
2890 3910
2891void 3911void
2892api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3912api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2893 PROTOTYPE: $;$ 3913 PROTOTYPE: $;$
… …
2895 3915
2896SV * 3916SV *
2897has_cctx (Coro::State coro) 3917has_cctx (Coro::State coro)
2898 PROTOTYPE: $ 3918 PROTOTYPE: $
2899 CODE: 3919 CODE:
2900 RETVAL = boolSV (!!coro->cctx); 3920 /* maybe manage the running flag differently */
3921 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2901 OUTPUT: 3922 OUTPUT:
2902 RETVAL 3923 RETVAL
2903 3924
2904int 3925int
2905is_traced (Coro::State coro) 3926is_traced (Coro::State coro)
… …
2925 3946
2926void 3947void
2927force_cctx () 3948force_cctx ()
2928 PROTOTYPE: 3949 PROTOTYPE:
2929 CODE: 3950 CODE:
2930 SvSTATE_current->cctx->idle_sp = 0; 3951 cctx_current->idle_sp = 0;
2931 3952
2932void 3953void
2933swap_defsv (Coro::State self) 3954swap_defsv (Coro::State self)
2934 PROTOTYPE: $ 3955 PROTOTYPE: $
2935 ALIAS: 3956 ALIAS:
… …
2943 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3964 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2944 3965
2945 SV *tmp = *src; *src = *dst; *dst = tmp; 3966 SV *tmp = *src; *src = *dst; *dst = tmp;
2946 } 3967 }
2947 3968
3969void
3970cancel (Coro::State self)
3971 CODE:
3972 coro_state_destroy (aTHX_ self);
3973
3974SV *
3975enable_times (int enabled = enable_times)
3976 CODE:
3977{
3978 RETVAL = boolSV (enable_times);
3979
3980 if (enabled != enable_times)
3981 {
3982 enable_times = enabled;
3983
3984 coro_times_update ();
3985 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3986 }
3987}
3988 OUTPUT:
3989 RETVAL
3990
3991void
3992times (Coro::State self)
3993 PPCODE:
3994{
3995 struct coro *current = SvSTATE (coro_current);
3996
3997 if (ecb_expect_false (current == self))
3998 {
3999 coro_times_update ();
4000 coro_times_add (SvSTATE (coro_current));
4001 }
4002
4003 EXTEND (SP, 2);
4004 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
4005 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
4006
4007 if (ecb_expect_false (current == self))
4008 coro_times_sub (SvSTATE (coro_current));
4009}
4010
4011void
4012swap_sv (Coro::State coro, SV *sva, SV *svb)
4013 CODE:
4014{
4015 struct coro *current = SvSTATE_current;
4016 AV *swap_sv;
4017 int i;
4018
4019 sva = SvRV (sva);
4020 svb = SvRV (svb);
4021
4022 if (current == coro)
4023 SWAP_SVS_LEAVE (current);
4024
4025 if (!coro->swap_sv)
4026 coro->swap_sv = newAV ();
4027
4028 swap_sv = coro->swap_sv;
4029
4030 for (i = AvFILLp (swap_sv) - 1; i >= 0; i -= 2)
4031 {
4032 SV *a = AvARRAY (swap_sv)[i ];
4033 SV *b = AvARRAY (swap_sv)[i + 1];
4034
4035 if (a == sva && b == svb)
4036 {
4037 SvREFCNT_dec_NN (a);
4038 SvREFCNT_dec_NN (b);
4039
4040 for (; i <= AvFILLp (swap_sv) - 2; i++)
4041 AvARRAY (swap_sv)[i] = AvARRAY (swap_sv)[i + 2];
4042
4043 AvFILLp (swap_sv) -= 2;
4044
4045 goto removed;
4046 }
4047 }
4048
4049 av_push (swap_sv, SvREFCNT_inc_NN (sva));
4050 av_push (swap_sv, SvREFCNT_inc_NN (svb));
4051
4052 removed:
4053
4054 if (current == coro)
4055 SWAP_SVS_ENTER (current);
4056}
4057
2948 4058
2949MODULE = Coro::State PACKAGE = Coro 4059MODULE = Coro::State PACKAGE = Coro
2950 4060
2951BOOT: 4061BOOT:
2952{ 4062{
2953 int i; 4063 if (SVt_LAST > 32)
4064 croak ("Coro internal error: SVt_LAST > 32, swap_sv might need adjustment");
2954 4065
2955 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2956 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 4066 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2957 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 4067 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2958 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD); 4068 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2959 cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);
2960 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); 4069 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2961 SvREADONLY_on (coro_current); 4070 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
4071 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
4072 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
4073 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2962 4074
2963 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); 4075 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2964 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); 4076 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2965 cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler); 4077 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2966 cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new); 4078 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2967 4079
2968 coro_stash = gv_stashpv ("Coro", TRUE); 4080 coro_stash = gv_stashpv ("Coro", TRUE);
2969 4081
2970 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 4082 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2971 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 4083 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2972 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 4084 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2973 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 4085 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2974 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 4086 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2975 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 4087 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2976
2977 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2978 coro_ready[i] = newAV ();
2979 4088
2980 { 4089 {
2981 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 4090 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2982 4091
2983 coroapi.schedule = api_schedule; 4092 coroapi.schedule = api_schedule;
4093 coroapi.schedule_to = api_schedule_to;
2984 coroapi.cede = api_cede; 4094 coroapi.cede = api_cede;
2985 coroapi.cede_notself = api_cede_notself; 4095 coroapi.cede_notself = api_cede_notself;
2986 coroapi.ready = api_ready; 4096 coroapi.ready = api_ready;
2987 coroapi.is_ready = api_is_ready; 4097 coroapi.is_ready = api_is_ready;
2988 coroapi.nready = coro_nready; 4098 coroapi.nready = coro_nready;
2989 coroapi.current = coro_current; 4099 coroapi.current = coro_current;
2990 4100
4101 coroapi.enterleave_hook = api_enterleave_hook;
4102 coroapi.enterleave_unhook = api_enterleave_unhook;
4103 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
4104
2991 /*GCoroAPI = &coroapi;*/ 4105 /*GCoroAPI = &coroapi;*/
2992 sv_setiv (sv, (IV)&coroapi); 4106 sv_setiv (sv, PTR2IV (&coroapi));
2993 SvREADONLY_on (sv); 4107 SvREADONLY_on (sv);
2994 } 4108 }
2995} 4109}
4110
4111SV *
4112async (...)
4113 PROTOTYPE: &@
4114 CODE:
4115 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
4116 api_ready (aTHX_ RETVAL);
4117 OUTPUT:
4118 RETVAL
4119
4120void
4121_destroy (Coro::State coro)
4122 CODE:
4123 /* used by the manager thread */
4124 coro_state_destroy (aTHX_ coro);
4125
4126void
4127on_destroy (Coro::State coro, SV *cb)
4128 CODE:
4129 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4130
4131void
4132join (...)
4133 CODE:
4134 CORO_EXECUTE_SLF_XS (slf_init_join);
4135
4136void
4137terminate (...)
4138 CODE:
4139 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4140
4141void
4142cancel (...)
4143 CODE:
4144 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4145
4146int
4147safe_cancel (Coro::State self, ...)
4148 C_ARGS: aTHX_ self, &ST (1), items - 1
2996 4149
2997void 4150void
2998schedule (...) 4151schedule (...)
2999 CODE: 4152 CODE:
3000 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4153 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3001 4154
3002void 4155void
4156schedule_to (...)
4157 CODE:
4158 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4159
4160void
4161cede_to (...)
4162 CODE:
4163 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4164
4165void
3003cede (...) 4166cede (...)
3004 CODE: 4167 CODE:
3005 CORO_EXECUTE_SLF_XS (slf_init_cede); 4168 CORO_EXECUTE_SLF_XS (slf_init_cede);
3006 4169
3007void 4170void
… …
3011 4174
3012void 4175void
3013_set_current (SV *current) 4176_set_current (SV *current)
3014 PROTOTYPE: $ 4177 PROTOTYPE: $
3015 CODE: 4178 CODE:
3016 SvREFCNT_dec (SvRV (coro_current)); 4179 SvREFCNT_dec_NN (SvRV (coro_current));
3017 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4180 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
3018 4181
3019void 4182void
3020_set_readyhook (SV *hook) 4183_set_readyhook (SV *hook)
3021 PROTOTYPE: $ 4184 PROTOTYPE: $
3022 CODE: 4185 CODE:
3023 SvREFCNT_dec (coro_readyhook); 4186 SvREFCNT_dec (coro_readyhook);
4187 SvGETMAGIC (hook);
4188 if (SvOK (hook))
4189 {
3024 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4190 coro_readyhook = newSVsv (hook);
4191 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4192 }
4193 else
4194 {
4195 coro_readyhook = 0;
4196 CORO_READYHOOK = 0;
4197 }
3025 4198
3026int 4199int
3027prio (Coro::State coro, int newprio = 0) 4200prio (Coro::State coro, int newprio = 0)
3028 PROTOTYPE: $;$ 4201 PROTOTYPE: $;$
3029 ALIAS: 4202 ALIAS:
… …
3035 if (items > 1) 4208 if (items > 1)
3036 { 4209 {
3037 if (ix) 4210 if (ix)
3038 newprio = coro->prio - newprio; 4211 newprio = coro->prio - newprio;
3039 4212
3040 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4213 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3041 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4214 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3042 4215
3043 coro->prio = newprio; 4216 coro->prio = newprio;
3044 } 4217 }
3045} 4218}
3046 OUTPUT: 4219 OUTPUT:
… …
3061 RETVAL = coro_nready; 4234 RETVAL = coro_nready;
3062 OUTPUT: 4235 OUTPUT:
3063 RETVAL 4236 RETVAL
3064 4237
3065void 4238void
4239suspend (Coro::State self)
4240 PROTOTYPE: $
4241 CODE:
4242 self->flags |= CF_SUSPENDED;
4243
4244void
4245resume (Coro::State self)
4246 PROTOTYPE: $
4247 CODE:
4248 self->flags &= ~CF_SUSPENDED;
4249
4250void
3066_pool_handler (...) 4251_pool_handler (...)
3067 CODE: 4252 CODE:
3068 CORO_EXECUTE_SLF_XS (slf_init_pool_handler); 4253 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3069 4254
3070void 4255void
… …
3081 for (i = 1; i < items; ++i) 4266 for (i = 1; i < items; ++i)
3082 av_push (av, SvREFCNT_inc_NN (ST (i))); 4267 av_push (av, SvREFCNT_inc_NN (ST (i)));
3083 4268
3084 if ((SV *)hv == &PL_sv_undef) 4269 if ((SV *)hv == &PL_sv_undef)
3085 { 4270 {
3086 PUSHMARK (SP); 4271 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3087 EXTEND (SP, 2);
3088 PUSHs (sv_Coro);
3089 PUSHs ((SV *)cv_pool_handler);
3090 PUTBACK;
3091 call_sv ((SV *)cv_coro_new, G_SCALAR);
3092 SPAGAIN;
3093
3094 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); 4272 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
4273 SvREFCNT_dec_NN (sv);
3095 } 4274 }
3096 4275
3097 { 4276 {
3098 struct coro *coro = SvSTATE_hv (hv); 4277 struct coro *coro = SvSTATE_hv (hv);
3099 4278
… …
3106 api_ready (aTHX_ (SV *)hv); 4285 api_ready (aTHX_ (SV *)hv);
3107 4286
3108 if (GIMME_V != G_VOID) 4287 if (GIMME_V != G_VOID)
3109 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); 4288 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3110 else 4289 else
3111 SvREFCNT_dec (hv); 4290 SvREFCNT_dec_NN (hv);
3112} 4291}
3113 4292
3114SV * 4293SV *
3115rouse_cb () 4294rouse_cb ()
3116 PROTOTYPE: 4295 PROTOTYPE:
… …
3123rouse_wait (...) 4302rouse_wait (...)
3124 PROTOTYPE: ;$ 4303 PROTOTYPE: ;$
3125 PPCODE: 4304 PPCODE:
3126 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4305 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3127 4306
4307void
4308on_enter (SV *block)
4309 ALIAS:
4310 on_leave = 1
4311 PROTOTYPE: &
4312 CODE:
4313{
4314 struct coro *coro = SvSTATE_current;
4315 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4316
4317 block = s_get_cv_croak (block);
4318
4319 if (!*avp)
4320 *avp = newAV ();
4321
4322 av_push (*avp, SvREFCNT_inc (block));
4323
4324 if (!ix)
4325 on_enterleave_call (aTHX_ block);
4326
4327 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4328 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4329 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4330}
4331
3128 4332
3129MODULE = Coro::State PACKAGE = PerlIO::cede 4333MODULE = Coro::State PACKAGE = PerlIO::cede
3130 4334
3131BOOT: 4335BOOT:
3132 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4336 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3135MODULE = Coro::State PACKAGE = Coro::Semaphore 4339MODULE = Coro::State PACKAGE = Coro::Semaphore
3136 4340
3137SV * 4341SV *
3138new (SV *klass, SV *count = 0) 4342new (SV *klass, SV *count = 0)
3139 CODE: 4343 CODE:
4344{
4345 int semcnt = 1;
4346
4347 if (count)
4348 {
4349 SvGETMAGIC (count);
4350
4351 if (SvOK (count))
4352 semcnt = SvIV (count);
4353 }
4354
3140 RETVAL = sv_bless ( 4355 RETVAL = sv_bless (
3141 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4356 coro_waitarray_new (aTHX_ semcnt),
3142 GvSTASH (CvGV (cv)) 4357 GvSTASH (CvGV (cv))
3143 ); 4358 );
4359}
3144 OUTPUT: 4360 OUTPUT:
3145 RETVAL 4361 RETVAL
3146 4362
3147# helper for Coro::Channel 4363# helper for Coro::Channel and others
3148SV * 4364SV *
3149_alloc (int count) 4365_alloc (int count)
3150 CODE: 4366 CODE:
3151 RETVAL = coro_waitarray_new (aTHX_ count); 4367 RETVAL = coro_waitarray_new (aTHX_ count);
3152 OUTPUT: 4368 OUTPUT:
… …
3158 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); 4374 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3159 OUTPUT: 4375 OUTPUT:
3160 RETVAL 4376 RETVAL
3161 4377
3162void 4378void
3163up (SV *self, int adjust = 1) 4379up (SV *self)
3164 ALIAS:
3165 adjust = 1
3166 CODE: 4380 CODE:
4381 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), 1);
4382
4383void
4384adjust (SV *self, int adjust)
4385 CODE:
3167 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4386 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), adjust);
3168 4387
3169void 4388void
3170down (...) 4389down (...)
3171 CODE: 4390 CODE:
3172 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); 4391 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
… …
3194 XSRETURN_NO; 4413 XSRETURN_NO;
3195} 4414}
3196 4415
3197void 4416void
3198waiters (SV *self) 4417waiters (SV *self)
3199 PPCODE: 4418 PPCODE:
3200{ 4419{
3201 AV *av = (AV *)SvRV (self); 4420 AV *av = (AV *)SvRV (self);
3202 int wcount = AvFILLp (av) + 1 - 1; 4421 int wcount = AvFILLp (av) + 1 - 1;
3203 4422
3204 if (GIMME_V == G_SCALAR) 4423 if (GIMME_V == G_SCALAR)
… …
3210 for (i = 1; i <= wcount; ++i) 4429 for (i = 1; i <= wcount; ++i)
3211 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4430 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3212 } 4431 }
3213} 4432}
3214 4433
4434MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4435
4436void
4437_may_delete (SV *sem, int count, unsigned int extra_refs)
4438 PPCODE:
4439{
4440 AV *av = (AV *)SvRV (sem);
4441
4442 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4443 && AvFILLp (av) == 0 /* no waiters, just count */
4444 && SvIV (AvARRAY (av)[0]) == count)
4445 XSRETURN_YES;
4446
4447 XSRETURN_NO;
4448}
4449
3215MODULE = Coro::State PACKAGE = Coro::Signal 4450MODULE = Coro::State PACKAGE = Coro::Signal
3216 4451
3217SV * 4452SV *
3218new (SV *klass) 4453new (SV *klass)
3219 CODE: 4454 CODE:
… …
3231 4466
3232void 4467void
3233broadcast (SV *self) 4468broadcast (SV *self)
3234 CODE: 4469 CODE:
3235{ 4470{
3236 AV *av = (AV *)SvRV (self); 4471 AV *av = (AV *)SvRV (self);
3237 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4472 coro_signal_wake (aTHX_ av, AvFILLp (av));
3238} 4473}
3239 4474
3240void 4475void
3241send (SV *self) 4476send (SV *self)
… …
3249 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4484 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3250} 4485}
3251 4486
3252IV 4487IV
3253awaited (SV *self) 4488awaited (SV *self)
3254 CODE: 4489 CODE:
3255 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4490 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3256 OUTPUT: 4491 OUTPUT:
3257 RETVAL 4492 RETVAL
3258 4493
3259 4494
… …
3264 4499
3265void 4500void
3266_schedule (...) 4501_schedule (...)
3267 CODE: 4502 CODE:
3268{ 4503{
3269 static int incede; 4504 static int incede;
3270 4505
3271 api_cede_notself (aTHX); 4506 api_cede_notself (aTHX);
3272 4507
3273 ++incede; 4508 ++incede;
3274 while (coro_nready >= incede && api_cede (aTHX)) 4509 while (coro_nready >= incede && api_cede (aTHX))
… …
3290 4525
3291void 4526void
3292_register (char *target, char *proto, SV *req) 4527_register (char *target, char *proto, SV *req)
3293 CODE: 4528 CODE:
3294{ 4529{
3295 CV *req_cv = coro_sv_2cv (aTHX_ req); 4530 SV *req_cv = s_get_cv_croak (req);
3296 /* newXSproto doesn't return the CV on 5.8 */ 4531 /* newXSproto doesn't return the CV on 5.8 */
3297 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4532 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3298 sv_setpv ((SV *)slf_cv, proto); 4533 sv_setpv ((SV *)slf_cv, proto);
3299 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4534 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3300} 4535}
3301 4536
4537MODULE = Coro::State PACKAGE = Coro::Select
4538
4539void
4540patch_pp_sselect ()
4541 CODE:
4542 if (!coro_old_pp_sselect)
4543 {
4544 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4545 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4546 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4547 }
4548
4549void
4550unpatch_pp_sselect ()
4551 CODE:
4552 if (coro_old_pp_sselect)
4553 {
4554 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4555 coro_old_pp_sselect = 0;
4556 }
4557
4558MODULE = Coro::State PACKAGE = Coro::Util
4559
4560void
4561_exit (int code)
4562 CODE:
4563 _exit (code);
4564
4565NV
4566time ()
4567 CODE:
4568 RETVAL = nvtime (aTHX);
4569 OUTPUT:
4570 RETVAL
4571
4572NV
4573gettimeofday ()
4574 PPCODE:
4575{
4576 UV tv [2];
4577 u2time (aTHX_ tv);
4578 EXTEND (SP, 2);
4579 PUSHs (sv_2mortal (newSVuv (tv [0])));
4580 PUSHs (sv_2mortal (newSVuv (tv [1])));
4581}
4582

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