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Comparing Coro/Coro/State.xs (file contents):
Revision 1.307 by root, Wed Nov 19 14:34:46 2008 UTC vs.
Revision 1.450 by root, Sun Jun 28 22:31:03 2015 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#define ECB_NO_LIBM 1
20#include "ecb.h"
21
22#include <stddef.h>
13#include <stdio.h> 23#include <stdio.h>
14#include <errno.h> 24#include <errno.h>
15#include <assert.h> 25#include <assert.h>
16 26
17#ifdef WIN32 27#ifndef SVs_PADSTALE
28# define SVs_PADSTALE 0
29#endif
30
31#ifdef PadARRAY
32# define NEWPADAPI 1
33# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
34#else
35typedef AV PADNAMELIST;
36# if !PERL_VERSION_ATLEAST(5,8,0)
37typedef AV PADLIST;
38typedef AV PAD;
39# endif
40# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
41# define PadlistMAX(pl) AvFILLp (pl)
42# define PadlistNAMES(pl) (*PadlistARRAY (pl))
43# define PadARRAY AvARRAY
44# define PadMAX AvFILLp
45# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
46#endif
47#ifndef PadnamelistREFCNT
48# define PadnamelistREFCNT(pnl) SvREFCNT (pnl)
49#endif
50#ifndef PadnamelistREFCNT_dec
51# define PadnamelistREFCNT_dec(pnl) SvREFCNT_dec (pnl)
52#endif
53
54/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
55/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
56#if PERL_VERSION_ATLEAST(5,19,0)
57# define SVt_BIND SVt_IV
58#endif
59
60#if defined(_WIN32)
61# undef HAS_GETTIMEOFDAY
18# undef setjmp 62# undef setjmp
19# undef longjmp 63# undef longjmp
20# undef _exit 64# undef _exit
21# define setjmp _setjmp /* deep magic */ 65# define setjmp _setjmp /* deep magic */
22#else 66#else
23# include <inttypes.h> /* most portable stdint.h */ 67# include <inttypes.h> /* most portable stdint.h */
24#endif 68#endif
25 69
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 */ 70/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 71static int cctx_max_idle = 4;
55 72
56#define PERL_VERSION_ATLEAST(a,b,c) \ 73#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 74# define HAS_SCOPESTACK_NAME 1
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
63# ifndef PL_ppaddr
64# define PL_ppaddr ppaddr
65# endif
66# ifndef call_sv
67# define call_sv perl_call_sv
68# endif
69# ifndef get_sv
70# define get_sv perl_get_sv
71# endif
72# ifndef get_cv
73# define get_cv perl_get_cv
74# endif
75# ifndef IS_PADGV
76# define IS_PADGV(v) 0
77# endif
78# ifndef IS_PADCONST
79# define IS_PADCONST(v) 0
80# endif
81#endif
82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103
104/* 5.8.7 */
105#ifndef SvRV_set
106# define SvRV_set(s,v) SvRV(s) = (v)
107#endif
108
109#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
110# undef CORO_STACKGUARD
111#endif
112
113#ifndef CORO_STACKGUARD
114# define CORO_STACKGUARD 0
115#endif 75#endif
116 76
117/* prefer perl internal functions over our own? */ 77/* prefer perl internal functions over our own? */
118#ifndef CORO_PREFER_PERL_FUNCTIONS 78#ifndef CORO_PREFER_PERL_FUNCTIONS
119# define CORO_PREFER_PERL_FUNCTIONS 0 79# define CORO_PREFER_PERL_FUNCTIONS 0
… …
127#else 87#else
128# define dSTACKLEVEL volatile void *stacklevel 88# define dSTACKLEVEL volatile void *stacklevel
129# define STACKLEVEL ((void *)&stacklevel) 89# define STACKLEVEL ((void *)&stacklevel)
130#endif 90#endif
131 91
132#define IN_DESTRUCT (PL_main_cv == Nullcv) 92#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 93
149#include "CoroAPI.h" 94#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */ 95#define GCoroAPI (&coroapi) /* very sneaky */
151 96
152#ifdef USE_ITHREADS 97#ifdef USE_ITHREADS
153# if CORO_PTHREAD 98# if CORO_PTHREAD
154static void *coro_thx; 99static void *coro_thx;
155# endif 100# endif
156#endif 101#endif
157 102
103#ifdef __linux
104# include <time.h> /* for timespec */
105# include <syscall.h> /* for SYS_* */
106# ifdef SYS_clock_gettime
107# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
108# define CORO_CLOCK_MONOTONIC 1
109# define CORO_CLOCK_THREAD_CPUTIME_ID 3
110# endif
111#endif
112
158static double (*nvtime)(); /* so why doesn't it take void? */ 113static double (*nvtime)(); /* so why doesn't it take void? */
114static void (*u2time)(pTHX_ UV ret[2]);
159 115
160/* we hijack an hopefully unused CV flag for our purposes */ 116/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000 117#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX); 118static OP *pp_slf (pTHX);
119static void slf_destroy (pTHX_ struct coro *coro);
163 120
164static U32 cctx_gen; 121static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 122static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 123static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 124static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 125static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 126static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 127static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 128
129static AV *av_destroy; /* destruction queue */
130static SV *sv_manager; /* the manager coro */
131static SV *sv_idle; /* $Coro::idle */
132
172static GV *irsgv; /* $/ */ 133static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 134static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 135static SV *rv_diehook;
175static SV *rv_warnhook; 136static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 137static HV *hv_sig; /* %SIG */
177 138
178/* async_pool helper stuff */ 139/* async_pool helper stuff */
179static SV *sv_pool_rss; 140static SV *sv_pool_rss;
180static SV *sv_pool_size; 141static SV *sv_pool_size;
142static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 143static AV *av_async_pool; /* idle pool */
144static SV *sv_Coro; /* class string */
145static CV *cv_pool_handler;
182 146
183/* Coro::AnyEvent */ 147/* Coro::AnyEvent */
184static SV *sv_activity; 148static SV *sv_activity;
185 149
150/* enable processtime/realtime profiling */
151static char enable_times;
152typedef U32 coro_ts[2];
153static coro_ts time_real, time_cpu;
154static char times_valid;
155
186static struct coro_cctx *cctx_first; 156static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 157static int cctx_count, cctx_idle;
188 158
189enum { 159enum
160{
190 CC_MAPPED = 0x01, 161 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 162 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 163 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 164 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 165 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 170typedef struct coro_cctx
200{ 171{
201 struct coro_cctx *next; 172 struct coro_cctx *next;
202 173
203 /* the stack */ 174 /* the stack */
204 void *sptr; 175 struct coro_stack stack;
205 size_t ssize;
206 176
207 /* cpu state */ 177 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 178 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
179#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 180 JMPENV *idle_te; /* same as idle_sp, but for top_env */
181#endif
210 JMPENV *top_env; 182 JMPENV *top_env;
211 coro_context cctx; 183 coro_context cctx;
212 184
213 U32 gen; 185 U32 gen;
214#if CORO_USE_VALGRIND 186#if CORO_USE_VALGRIND
215 int valgrind_id; 187 int valgrind_id;
216#endif 188#endif
217 unsigned char flags; 189 unsigned char flags;
218} coro_cctx; 190} coro_cctx;
219 191
192static coro_cctx *cctx_current; /* the currently running cctx */
193
194/*****************************************************************************/
195
196static MGVTBL coro_state_vtbl;
197
220enum { 198enum
199{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 200 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 201 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 202 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 203 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
204 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
205 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 206};
226 207
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 208/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 209typedef struct
229{ 210{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 211 #define VARx(name,expr,type) type name;
235# include "state.h" 212 #include "state.h"
236#undef VAR
237} perl_slots; 213} perl_slots;
238 214
215/* how many context stack entries do we need for perl_slots */
239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 216#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 217
241/* this is a structure representing a perl-level coroutine */ 218/* this is a structure representing a perl-level coroutine */
242struct coro { 219struct coro
220{
243 /* the C coroutine allocated to this perl coroutine, if any */ 221 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 222 coro_cctx *cctx;
223
224 /* ready queue */
225 struct coro *next_ready;
245 226
246 /* state data */ 227 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 228 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 229 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 230 perl_slots *slot; /* basically the saved sp */
250 231
251 CV *startcv; /* the CV to execute */ 232 CV *startcv; /* the CV to execute */
252 AV *args; /* data associated with this coroutine (initial args) */ 233 AV *args; /* data associated with this coroutine (initial args) */
253 int refcnt; /* coroutines are refcounted, yes */
254 int flags; /* CF_ flags */ 234 int flags; /* CF_ flags */
255 HV *hv; /* the perl hash associated with this coro, if any */ 235 HV *hv; /* the perl hash associated with this coro, if any */
256 void (*on_destroy)(pTHX_ struct coro *coro);
257 236
258 /* statistics */ 237 /* statistics */
259 int usecount; /* number of transfers to this coro */ 238 int usecount; /* number of transfers to this coro */
260 239
261 /* coro process data */ 240 /* coro process data */
262 int prio; 241 int prio;
263 SV *except; /* exception to be thrown */ 242 SV *except; /* exception to be thrown */
264 SV *rouse_cb; 243 SV *rouse_cb; /* last rouse callback */
244 AV *on_destroy; /* callbacks or coros to notify on destroy */
245 AV *status; /* the exit status list */
265 246
266 /* async_pool */ 247 /* async_pool */
267 SV *saved_deffh; 248 SV *saved_deffh;
249 SV *invoke_cb;
250 AV *invoke_av;
251
252 /* on_enter/on_leave */
253 AV *on_enter; AV *on_enter_xs;
254 AV *on_leave; AV *on_leave_xs;
255
256 /* swap_sv */
257 AV *swap_sv;
258
259 /* times */
260 coro_ts t_cpu, t_real;
268 261
269 /* linked list */ 262 /* linked list */
270 struct coro *next, *prev; 263 struct coro *next, *prev;
271}; 264};
272 265
273typedef struct coro *Coro__State; 266typedef struct coro *Coro__State;
274typedef struct coro *Coro__State_or_hashref; 267typedef struct coro *Coro__State_or_hashref;
275 268
276/* the following variables are effectively part of the perl context */ 269/* the following variables are effectively part of the perl context */
277/* and get copied between struct coro and these variables */ 270/* and get copied between struct coro and these variables */
278/* the mainr easonw e don't support windows process emulation */ 271/* the main reason we don't support windows process emulation */
279static struct CoroSLF slf_frame; /* the current slf frame */ 272static struct CoroSLF slf_frame; /* the current slf frame */
280 273
281/** Coro ********************************************************************/ 274/** Coro ********************************************************************/
282 275
283#define PRIO_MAX 3 276#define CORO_PRIO_MAX 3
284#define PRIO_HIGH 1 277#define CORO_PRIO_HIGH 1
285#define PRIO_NORMAL 0 278#define CORO_PRIO_NORMAL 0
286#define PRIO_LOW -1 279#define CORO_PRIO_LOW -1
287#define PRIO_IDLE -3 280#define CORO_PRIO_IDLE -3
288#define PRIO_MIN -4 281#define CORO_PRIO_MIN -4
289 282
290/* for Coro.pm */ 283/* for Coro.pm */
291static SV *coro_current; 284static SV *coro_current;
292static SV *coro_readyhook; 285static SV *coro_readyhook;
293static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 286static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
287static CV *cv_coro_run;
294static struct coro *coro_first; 288static struct coro *coro_first;
295#define coro_nready coroapi.nready 289#define coro_nready coroapi.nready
296 290
291/** JIT *********************************************************************/
292
293#if CORO_JIT
294 /* APPLE doesn't have mmap though */
295 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
296 #ifndef CORO_JIT_TYPE
297 #if ECB_AMD64 && CORO_JIT_UNIXY
298 #define CORO_JIT_TYPE "amd64-unix"
299 #elif __i386 && CORO_JIT_UNIXY
300 #define CORO_JIT_TYPE "x86-unix"
301 #endif
302 #endif
303#endif
304
305#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
306 #undef CORO_JIT
307#endif
308
309#if CORO_JIT
310 typedef void (*load_save_perl_slots_type)(perl_slots *);
311 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
312#endif
313
314/** Coro::Select ************************************************************/
315
316static OP *(*coro_old_pp_sselect) (pTHX);
317static SV *coro_select_select;
318
319/* horrible hack, but if it works... */
320static OP *
321coro_pp_sselect (pTHX)
322{
323 dSP;
324 PUSHMARK (SP - 4); /* fake argument list */
325 XPUSHs (coro_select_select);
326 PUTBACK;
327
328 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
329 PL_op->op_flags |= OPf_STACKED;
330 PL_op->op_private = 0;
331 return PL_ppaddr [OP_ENTERSUB](aTHX);
332}
333
334/** time stuff **************************************************************/
335
336#ifdef HAS_GETTIMEOFDAY
337
338ecb_inline void
339coro_u2time (pTHX_ UV ret[2])
340{
341 struct timeval tv;
342 gettimeofday (&tv, 0);
343
344 ret [0] = tv.tv_sec;
345 ret [1] = tv.tv_usec;
346}
347
348ecb_inline double
349coro_nvtime (void)
350{
351 struct timeval tv;
352 gettimeofday (&tv, 0);
353
354 return tv.tv_sec + tv.tv_usec * 1e-6;
355}
356
357ecb_inline void
358time_init (pTHX)
359{
360 nvtime = coro_nvtime;
361 u2time = coro_u2time;
362}
363
364#else
365
366ecb_inline void
367time_init (pTHX)
368{
369 SV **svp;
370
371 require_pv ("Time/HiRes.pm");
372
373 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
374
375 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
376 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
377
378 nvtime = INT2PTR (double (*)(), SvIV (*svp));
379
380 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
381 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
382}
383
384#endif
385
297/** lowlevel stuff **********************************************************/ 386/** lowlevel stuff **********************************************************/
298 387
299static SV * 388static SV * ecb_noinline
300coro_get_sv (pTHX_ const char *name, int create) 389coro_get_sv (pTHX_ const char *name, int create)
301{ 390{
302#if PERL_VERSION_ATLEAST (5,10,0) 391#if PERL_VERSION_ATLEAST (5,10,0)
303 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 392 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
304 get_sv (name, create); 393 get_sv (name, create);
305#endif 394#endif
306 return get_sv (name, create); 395 return get_sv (name, create);
307} 396}
308 397
309static AV * 398static AV * ecb_noinline
310coro_get_av (pTHX_ const char *name, int create) 399coro_get_av (pTHX_ const char *name, int create)
311{ 400{
312#if PERL_VERSION_ATLEAST (5,10,0) 401#if PERL_VERSION_ATLEAST (5,10,0)
313 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 402 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
314 get_av (name, create); 403 get_av (name, create);
315#endif 404#endif
316 return get_av (name, create); 405 return get_av (name, create);
317} 406}
318 407
319static HV * 408static HV * ecb_noinline
320coro_get_hv (pTHX_ const char *name, int create) 409coro_get_hv (pTHX_ const char *name, int create)
321{ 410{
322#if PERL_VERSION_ATLEAST (5,10,0) 411#if PERL_VERSION_ATLEAST (5,10,0)
323 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 412 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
324 get_hv (name, create); 413 get_hv (name, create);
325#endif 414#endif
326 return get_hv (name, create); 415 return get_hv (name, create);
327} 416}
328 417
329/* may croak */ 418ecb_inline void
330INLINE CV * 419coro_times_update (void)
331coro_sv_2cv (SV *sv)
332{ 420{
333 HV *st; 421#ifdef coro_clock_gettime
334 GV *gvp; 422 struct timespec ts;
335 return sv_2cv (sv, &st, &gvp, 0);
336}
337 423
338static AV * 424 ts.tv_sec = ts.tv_nsec = 0;
425 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
426 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
427
428 ts.tv_sec = ts.tv_nsec = 0;
429 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
430 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
431#else
432 dTHX;
433 UV tv[2];
434
435 u2time (aTHX_ tv);
436 time_real [0] = tv [0];
437 time_real [1] = tv [1] * 1000;
438#endif
439}
440
441ecb_inline void
442coro_times_add (struct coro *c)
443{
444 c->t_real [1] += time_real [1];
445 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
446 c->t_real [0] += time_real [0];
447
448 c->t_cpu [1] += time_cpu [1];
449 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
450 c->t_cpu [0] += time_cpu [0];
451}
452
453ecb_inline void
454coro_times_sub (struct coro *c)
455{
456 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
457 c->t_real [1] -= time_real [1];
458 c->t_real [0] -= time_real [0];
459
460 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
461 c->t_cpu [1] -= time_cpu [1];
462 c->t_cpu [0] -= time_cpu [0];
463}
464
465/*****************************************************************************/
466/* magic glue */
467
468#define CORO_MAGIC_type_cv 26
469#define CORO_MAGIC_type_state PERL_MAGIC_ext
470
471#define CORO_MAGIC_NN(sv, type) \
472 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
473 ? SvMAGIC (sv) \
474 : mg_find (sv, type))
475
476#define CORO_MAGIC(sv, type) \
477 (ecb_expect_true (SvMAGIC (sv)) \
478 ? CORO_MAGIC_NN (sv, type) \
479 : 0)
480
481#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
482#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
483
484ecb_inline MAGIC *
485SvSTATEhv_p (pTHX_ SV *coro)
486{
487 MAGIC *mg;
488
489 if (ecb_expect_true (
490 SvTYPE (coro) == SVt_PVHV
491 && (mg = CORO_MAGIC_state (coro))
492 && mg->mg_virtual == &coro_state_vtbl
493 ))
494 return mg;
495
496 return 0;
497}
498
499ecb_inline struct coro *
500SvSTATE_ (pTHX_ SV *coro_sv)
501{
502 MAGIC *mg;
503
504 if (SvROK (coro_sv))
505 coro_sv = SvRV (coro_sv);
506
507 mg = SvSTATEhv_p (aTHX_ coro_sv);
508 if (!mg)
509 croak ("Coro::State object required");
510
511 return (struct coro *)mg->mg_ptr;
512}
513
514#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
515
516/* faster than SvSTATE, but expects a coroutine hv */
517#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
518#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
519
520/*****************************************************************************/
521/* padlist management and caching */
522
523ecb_inline PADLIST *
339coro_clone_padlist (pTHX_ CV *cv) 524coro_derive_padlist (pTHX_ CV *cv)
340{ 525{
341 AV *padlist = CvPADLIST (cv); 526 PADLIST *padlist = CvPADLIST (cv);
342 AV *newpadlist, *newpad; 527 PADLIST *newpadlist;
528 PADNAMELIST *padnames;
529 PAD *newpad;
530 PADOFFSET off = PadlistMAX (padlist) + 1;
343 531
344 newpadlist = newAV (); 532#if NEWPADAPI
533
534 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
535 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
536 while (!PadlistARRAY (padlist)[off - 1])
537 --off;
538
539 Perl_pad_push (aTHX_ padlist, off);
540
541 newpad = PadlistARRAY (padlist)[off];
542 PadlistARRAY (padlist)[off] = 0;
543
544#else
545
546#if PERL_VERSION_ATLEAST (5,10,0)
547 Perl_pad_push (aTHX_ padlist, off);
548#else
549 Perl_pad_push (aTHX_ padlist, off, 1);
550#endif
551
552 newpad = PadlistARRAY (padlist)[off];
553 PadlistMAX (padlist) = off - 1;
554
555#endif
556
557 newPADLIST (newpadlist);
558#if !PERL_VERSION_ATLEAST(5,15,3)
559 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
345 AvREAL_off (newpadlist); 560 AvREAL_off (newpadlist);
346#if PERL_VERSION_ATLEAST (5,10,0)
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
348#else
349 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
350#endif 561#endif
351 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
352 --AvFILLp (padlist);
353 562
354 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 563 /* Already extended to 2 elements by newPADLIST. */
355 av_store (newpadlist, 1, (SV *)newpad); 564 PadlistMAX (newpadlist) = 1;
565
566 padnames = PadlistNAMES (padlist);
567 ++PadnamelistREFCNT (padnames);
568 PadlistNAMES (newpadlist) = padnames;
569
570 PadlistARRAY (newpadlist)[1] = newpad;
356 571
357 return newpadlist; 572 return newpadlist;
358} 573}
359 574
360static void 575ecb_inline void
361free_padlist (pTHX_ AV *padlist) 576free_padlist (pTHX_ PADLIST *padlist)
362{ 577{
363 /* may be during global destruction */ 578 /* may be during global destruction */
364 if (SvREFCNT (padlist)) 579 if (!IN_DESTRUCT)
365 { 580 {
366 I32 i = AvFILLp (padlist); 581 I32 i = PadlistMAX (padlist);
367 while (i >= 0) 582
583 while (i > 0) /* special-case index 0 */
368 { 584 {
369 SV **svp = av_fetch (padlist, i--, FALSE); 585 /* we try to be extra-careful here */
586 PAD *pad = PadlistARRAY (padlist)[i--];
587
370 if (svp) 588 if (pad)
371 { 589 {
372 SV *sv; 590 I32 j = PadMAX (pad);
373 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 591
592 while (j >= 0)
374 SvREFCNT_dec (sv); 593 SvREFCNT_dec (PadARRAY (pad)[j--]);
375 594
595 PadMAX (pad) = -1;
376 SvREFCNT_dec (*svp); 596 SvREFCNT_dec (pad);
377 } 597 }
378 } 598 }
379 599
600 PadnamelistREFCNT_dec (PadlistNAMES (padlist));
601
602#if NEWPADAPI
603 Safefree (PadlistARRAY (padlist));
604 Safefree (padlist);
605#else
606 AvFILLp (padlist) = -1;
607 AvREAL_off (padlist);
380 SvREFCNT_dec ((SV*)padlist); 608 SvREFCNT_dec ((SV*)padlist);
609#endif
381 } 610 }
382} 611}
383 612
384static int 613static int
385coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 614coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
386{ 615{
387 AV *padlist; 616 PADLIST *padlist;
388 AV *av = (AV *)mg->mg_obj; 617 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
618 size_t len = *(size_t *)mg->mg_ptr;
389 619
390 /* casting is fun. */ 620 /* perl manages to free our internal AV and _then_ call us */
391 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 621 if (IN_DESTRUCT)
622 return 0;
623
624 while (len--)
392 free_padlist (aTHX_ padlist); 625 free_padlist (aTHX_ padlists[len]);
393
394 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
395 626
396 return 0; 627 return 0;
397} 628}
398
399#define CORO_MAGIC_type_cv 26
400#define CORO_MAGIC_type_state PERL_MAGIC_ext
401 629
402static MGVTBL coro_cv_vtbl = { 630static MGVTBL coro_cv_vtbl = {
403 0, 0, 0, 0, 631 0, 0, 0, 0,
404 coro_cv_free 632 coro_cv_free
405}; 633};
406 634
407#define CORO_MAGIC_NN(sv, type) \
408 (expect_true (SvMAGIC (sv)->mg_type == type) \
409 ? SvMAGIC (sv) \
410 : mg_find (sv, type))
411
412#define CORO_MAGIC(sv, type) \
413 (expect_true (SvMAGIC (sv)) \
414 ? CORO_MAGIC_NN (sv, type) \
415 : 0)
416
417#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
418#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
419
420INLINE struct coro *
421SvSTATE_ (pTHX_ SV *coro)
422{
423 HV *stash;
424 MAGIC *mg;
425
426 if (SvROK (coro))
427 coro = SvRV (coro);
428
429 if (expect_false (SvTYPE (coro) != SVt_PVHV))
430 croak ("Coro::State object required");
431
432 stash = SvSTASH (coro);
433 if (expect_false (stash != coro_stash && stash != coro_state_stash))
434 {
435 /* very slow, but rare, check */
436 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
437 croak ("Coro::State object required");
438 }
439
440 mg = CORO_MAGIC_state (coro);
441 return (struct coro *)mg->mg_ptr;
442}
443
444#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
445
446/* faster than SvSTATE, but expects a coroutine hv */
447#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
448#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
449
450/* the next two functions merely cache the padlists */ 635/* the next two functions merely cache the padlists */
451static void 636ecb_inline void
452get_padlist (pTHX_ CV *cv) 637get_padlist (pTHX_ CV *cv)
453{ 638{
454 MAGIC *mg = CORO_MAGIC_cv (cv); 639 MAGIC *mg = CORO_MAGIC_cv (cv);
455 AV *av; 640 size_t *lenp;
456 641
457 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 642 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
458 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 643 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
459 else 644 else
460 { 645 {
461#if CORO_PREFER_PERL_FUNCTIONS 646#if CORO_PREFER_PERL_FUNCTIONS
462 /* this is probably cleaner? but also slower! */ 647 /* this is probably cleaner? but also slower! */
463 /* in practise, it seems to be less stable */ 648 /* in practise, it seems to be less stable */
464 CV *cp = Perl_cv_clone (aTHX_ cv); 649 CV *cp = Perl_cv_clone (aTHX_ cv);
465 CvPADLIST (cv) = CvPADLIST (cp); 650 CvPADLIST (cv) = CvPADLIST (cp);
466 CvPADLIST (cp) = 0; 651 CvPADLIST (cp) = 0;
467 SvREFCNT_dec (cp); 652 SvREFCNT_dec (cp);
468#else 653#else
469 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 654 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
470#endif 655#endif
471 } 656 }
472} 657}
473 658
474static void 659ecb_inline void
475put_padlist (pTHX_ CV *cv) 660put_padlist (pTHX_ CV *cv)
476{ 661{
477 MAGIC *mg = CORO_MAGIC_cv (cv); 662 MAGIC *mg = CORO_MAGIC_cv (cv);
478 AV *av;
479 663
480 if (expect_false (!mg)) 664 if (ecb_expect_false (!mg))
665 {
481 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 666 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
667 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
668 mg->mg_len = 1; /* so mg_free frees mg_ptr */
669 }
670 else
671 Renew (mg->mg_ptr,
672 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
673 char);
482 674
483 av = (AV *)mg->mg_obj; 675 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
484
485 if (expect_false (AvFILLp (av) >= AvMAX (av)))
486 av_extend (av, AvMAX (av) + 1);
487
488 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
489} 676}
490 677
491/** load & save, init *******************************************************/ 678/** load & save, init *******************************************************/
679
680ecb_inline void
681swap_sv (SV *a, SV *b)
682{
683 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
684 SV tmp;
685
686 /* swap sv_any */
687 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
688
689 /* swap sv_flags */
690 SvFLAGS (&tmp) = SvFLAGS (a);
691 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
692 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
693
694#if PERL_VERSION_ATLEAST (5,10,0)
695 /* perl 5.10 and later complicates this _quite_ a bit, but it also
696 * is much faster, so no quarrels here. alternatively, we could
697 * sv_upgrade to avoid this.
698 */
699 {
700 /* swap sv_u */
701 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
702
703 /* if SvANY points to the head, we need to adjust the pointers,
704 * as the pointer for a still points to b, and maybe vice versa.
705 */
706 #define svany_in_head(type) \
707 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
708
709 if (svany_in_head (SvTYPE (a)))
710 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
711
712 if (svany_in_head (SvTYPE (b)))
713 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
714 }
715#endif
716}
717
718/* swap sv heads, at least logically */
719static void
720swap_svs (pTHX_ Coro__State c)
721{
722 int i;
723
724 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
725 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
726}
727
728#define SWAP_SVS(coro) \
729 if (ecb_expect_false ((coro)->swap_sv)) \
730 swap_svs (aTHX_ (coro))
731
732static void
733on_enterleave_call (pTHX_ SV *cb);
492 734
493static void 735static void
494load_perl (pTHX_ Coro__State c) 736load_perl (pTHX_ Coro__State c)
495{ 737{
496 perl_slots *slot = c->slot; 738 perl_slots *slot = c->slot;
497 c->slot = 0; 739 c->slot = 0;
498 740
499 PL_mainstack = c->mainstack; 741 PL_mainstack = c->mainstack;
500 742
501 GvSV (PL_defgv) = slot->defsv; 743#if CORO_JIT
502 GvAV (PL_defgv) = slot->defav; 744 load_perl_slots (slot);
503 GvSV (PL_errgv) = slot->errsv; 745#else
504 GvSV (irsgv) = slot->irsgv;
505
506 #define VAR(name,type) PL_ ## name = slot->name; 746 #define VARx(name,expr,type) expr = slot->name;
507 # include "state.h" 747 #include "state.h"
508 #undef VAR 748#endif
509 749
510 { 750 {
511 dSP; 751 dSP;
512 752
513 CV *cv; 753 CV *cv;
514 754
515 /* now do the ugly restore mess */ 755 /* now do the ugly restore mess */
516 while (expect_true (cv = (CV *)POPs)) 756 while (ecb_expect_true (cv = (CV *)POPs))
517 { 757 {
518 put_padlist (aTHX_ cv); /* mark this padlist as available */ 758 put_padlist (aTHX_ cv); /* mark this padlist as available */
519 CvDEPTH (cv) = PTR2IV (POPs); 759 CvDEPTH (cv) = PTR2IV (POPs);
520 CvPADLIST (cv) = (AV *)POPs; 760 CvPADLIST (cv) = (PADLIST *)POPs;
521 } 761 }
522 762
523 PUTBACK; 763 PUTBACK;
524 } 764 }
525 765
526 slf_frame = c->slf_frame; 766 slf_frame = c->slf_frame;
527 CORO_THROW = c->except; 767 CORO_THROW = c->except;
768
769 if (ecb_expect_false (enable_times))
770 {
771 if (ecb_expect_false (!times_valid))
772 coro_times_update ();
773
774 coro_times_sub (c);
775 }
776
777 if (ecb_expect_false (c->on_enter))
778 {
779 int i;
780
781 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
782 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
783 }
784
785 if (ecb_expect_false (c->on_enter_xs))
786 {
787 int i;
788
789 for (i = 0; i <= AvFILLp (c->on_enter_xs); i += 2)
790 ((coro_enterleave_hook)AvARRAY (c->on_enter_xs)[i]) (aTHX_ AvARRAY (c->on_enter_xs)[i + 1]);
791 }
792
793 SWAP_SVS (c);
528} 794}
529 795
530static void 796static void
531save_perl (pTHX_ Coro__State c) 797save_perl (pTHX_ Coro__State c)
532{ 798{
799 SWAP_SVS (c);
800
801 if (ecb_expect_false (c->on_leave_xs))
802 {
803 int i;
804
805 for (i = AvFILLp (c->on_leave_xs) - 1; i >= 0; i -= 2)
806 ((coro_enterleave_hook)AvARRAY (c->on_leave_xs)[i]) (aTHX_ AvARRAY (c->on_leave_xs)[i + 1]);
807 }
808
809 if (ecb_expect_false (c->on_leave))
810 {
811 int i;
812
813 for (i = AvFILLp (c->on_leave); i >= 0; --i)
814 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
815 }
816
817 times_valid = 0;
818
819 if (ecb_expect_false (enable_times))
820 {
821 coro_times_update (); times_valid = 1;
822 coro_times_add (c);
823 }
824
533 c->except = CORO_THROW; 825 c->except = CORO_THROW;
534 c->slf_frame = slf_frame; 826 c->slf_frame = slf_frame;
535 827
536 { 828 {
537 dSP; 829 dSP;
… …
546 838
547 XPUSHs (Nullsv); 839 XPUSHs (Nullsv);
548 /* this loop was inspired by pp_caller */ 840 /* this loop was inspired by pp_caller */
549 for (;;) 841 for (;;)
550 { 842 {
551 while (expect_true (cxix >= 0)) 843 while (ecb_expect_true (cxix >= 0))
552 { 844 {
553 PERL_CONTEXT *cx = &ccstk[cxix--]; 845 PERL_CONTEXT *cx = &ccstk[cxix--];
554 846
555 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 847 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
556 { 848 {
557 CV *cv = cx->blk_sub.cv; 849 CV *cv = cx->blk_sub.cv;
558 850
559 if (expect_true (CvDEPTH (cv))) 851 if (ecb_expect_true (CvDEPTH (cv)))
560 { 852 {
561 EXTEND (SP, 3); 853 EXTEND (SP, 3);
562 PUSHs ((SV *)CvPADLIST (cv)); 854 PUSHs ((SV *)CvPADLIST (cv));
563 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 855 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
564 PUSHs ((SV *)cv); 856 PUSHs ((SV *)cv);
… …
567 get_padlist (aTHX_ cv); 859 get_padlist (aTHX_ cv);
568 } 860 }
569 } 861 }
570 } 862 }
571 863
572 if (expect_true (top_si->si_type == PERLSI_MAIN)) 864 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
573 break; 865 break;
574 866
575 top_si = top_si->si_prev; 867 top_si = top_si->si_prev;
576 ccstk = top_si->si_cxstack; 868 ccstk = top_si->si_cxstack;
577 cxix = top_si->si_cxix; 869 cxix = top_si->si_cxix;
… …
579 871
580 PUTBACK; 872 PUTBACK;
581 } 873 }
582 874
583 /* allocate some space on the context stack for our purposes */ 875 /* allocate some space on the context stack for our purposes */
584 /* we manually unroll here, as usually 2 slots is enough */ 876 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
585 if (SLOT_COUNT >= 1) CXINC;
586 if (SLOT_COUNT >= 2) CXINC;
587 if (SLOT_COUNT >= 3) CXINC;
588 { 877 {
589 int i; 878 unsigned int i;
879
590 for (i = 3; i < SLOT_COUNT; ++i) 880 for (i = 0; i < SLOT_COUNT; ++i)
591 CXINC; 881 CXINC;
592 } 882
593 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 883 cxstack_ix -= SLOT_COUNT; /* undo allocation */
884 }
594 885
595 c->mainstack = PL_mainstack; 886 c->mainstack = PL_mainstack;
596 887
597 { 888 {
598 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 889 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
599 890
600 slot->defav = GvAV (PL_defgv); 891#if CORO_JIT
601 slot->defsv = DEFSV; 892 save_perl_slots (slot);
602 slot->errsv = ERRSV; 893#else
603 slot->irsgv = GvSV (irsgv);
604
605 #define VAR(name,type) slot->name = PL_ ## name; 894 #define VARx(name,expr,type) slot->name = expr;
606 # include "state.h" 895 #include "state.h"
607 #undef VAR 896#endif
608 } 897 }
609} 898}
610 899
611/* 900/*
612 * allocate various perl stacks. This is almost an exact copy 901 * allocate various perl stacks. This is almost an exact copy
… …
618# define coro_init_stacks(thx) init_stacks () 907# define coro_init_stacks(thx) init_stacks ()
619#else 908#else
620static void 909static void
621coro_init_stacks (pTHX) 910coro_init_stacks (pTHX)
622{ 911{
623 PL_curstackinfo = new_stackinfo(32, 8); 912 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
624 PL_curstackinfo->si_type = PERLSI_MAIN; 913 PL_curstackinfo->si_type = PERLSI_MAIN;
625 PL_curstack = PL_curstackinfo->si_stack; 914 PL_curstack = PL_curstackinfo->si_stack;
626 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 915 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
627 916
628 PL_stack_base = AvARRAY(PL_curstack); 917 PL_stack_base = AvARRAY(PL_curstack);
… …
643#endif 932#endif
644 933
645 New(54,PL_scopestack,8,I32); 934 New(54,PL_scopestack,8,I32);
646 PL_scopestack_ix = 0; 935 PL_scopestack_ix = 0;
647 PL_scopestack_max = 8; 936 PL_scopestack_max = 8;
937#if HAS_SCOPESTACK_NAME
938 New(54,PL_scopestack_name,8,const char*);
939#endif
648 940
649 New(54,PL_savestack,24,ANY); 941 New(54,PL_savestack,24,ANY);
650 PL_savestack_ix = 0; 942 PL_savestack_ix = 0;
651 PL_savestack_max = 24; 943 PL_savestack_max = 24;
652 944
… …
680 } 972 }
681 973
682 Safefree (PL_tmps_stack); 974 Safefree (PL_tmps_stack);
683 Safefree (PL_markstack); 975 Safefree (PL_markstack);
684 Safefree (PL_scopestack); 976 Safefree (PL_scopestack);
977#if HAS_SCOPESTACK_NAME
978 Safefree (PL_scopestack_name);
979#endif
685 Safefree (PL_savestack); 980 Safefree (PL_savestack);
686#if !PERL_VERSION_ATLEAST (5,10,0) 981#if !PERL_VERSION_ATLEAST (5,10,0)
687 Safefree (PL_retstack); 982 Safefree (PL_retstack);
688#endif 983#endif
689} 984}
690 985
986#define CORO_RSS \
987 rss += sizeof (SYM (curstackinfo)); \
988 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
989 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
990 rss += SYM (tmps_max) * sizeof (SV *); \
991 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
992 rss += SYM (scopestack_max) * sizeof (I32); \
993 rss += SYM (savestack_max) * sizeof (ANY);
994
691static size_t 995static size_t
692coro_rss (pTHX_ struct coro *coro) 996coro_rss (pTHX_ struct coro *coro)
693{ 997{
694 size_t rss = sizeof (*coro); 998 size_t rss = sizeof (*coro);
695 999
696 if (coro->mainstack) 1000 if (coro->mainstack)
697 { 1001 {
698 perl_slots tmp_slot;
699 perl_slots *slot;
700
701 if (coro->flags & CF_RUNNING) 1002 if (coro->flags & CF_RUNNING)
702 { 1003 {
703 slot = &tmp_slot; 1004 #define SYM(sym) PL_ ## sym
704 1005 CORO_RSS;
705 #define VAR(name,type) slot->name = PL_ ## name;
706 # include "state.h"
707 #undef VAR 1006 #undef SYM
708 } 1007 }
709 else 1008 else
710 slot = coro->slot;
711
712 if (slot)
713 { 1009 {
714 rss += sizeof (slot->curstackinfo); 1010 #define SYM(sym) coro->slot->sym
715 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 1011 CORO_RSS;
716 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 1012 #undef SYM
717 rss += slot->tmps_max * sizeof (SV *);
718 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
719 rss += slot->scopestack_max * sizeof (I32);
720 rss += slot->savestack_max * sizeof (ANY);
721
722#if !PERL_VERSION_ATLEAST (5,10,0)
723 rss += slot->retstack_max * sizeof (OP *);
724#endif
725 } 1013 }
726 } 1014 }
727 1015
728 return rss; 1016 return rss;
729} 1017}
… …
742#endif 1030#endif
743 1031
744/* 1032/*
745 * This overrides the default magic get method of %SIG elements. 1033 * 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 1034 * 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 1035 * and instead of trying to save and restore the hash elements (extremely slow),
748 * readback here. 1036 * 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 */ 1037 */
753static int 1038static int ecb_cold
754coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1039coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
755{ 1040{
756 const char *s = MgPV_nolen_const (mg); 1041 const char *s = MgPV_nolen_const (mg);
757 1042
758 if (*s == '_') 1043 if (*s == '_')
759 { 1044 {
760 SV **svp = 0; 1045 SV **svp = 0;
761 1046
762 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1047 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
763 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1048 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
764 1049
765 if (svp) 1050 if (svp)
766 { 1051 {
767 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1052 SV *ssv;
1053
1054 if (!*svp)
1055 ssv = &PL_sv_undef;
1056 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1057 ssv = sv_2mortal (newRV_inc (*svp));
1058 else
1059 ssv = *svp;
1060
1061 sv_setsv (sv, ssv);
768 return 0; 1062 return 0;
769 } 1063 }
770 } 1064 }
771 1065
772 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1066 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
773} 1067}
774 1068
775static int 1069static int ecb_cold
776coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1070coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
777{ 1071{
778 const char *s = MgPV_nolen_const (mg); 1072 const char *s = MgPV_nolen_const (mg);
779 1073
780 if (*s == '_') 1074 if (*s == '_')
… …
794 } 1088 }
795 1089
796 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1090 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
797} 1091}
798 1092
799static int 1093static int ecb_cold
800coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1094coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
801{ 1095{
802 const char *s = MgPV_nolen_const (mg); 1096 const char *s = MgPV_nolen_const (mg);
803 1097
804 if (*s == '_') 1098 if (*s == '_')
… …
809 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1103 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
810 1104
811 if (svp) 1105 if (svp)
812 { 1106 {
813 SV *old = *svp; 1107 SV *old = *svp;
814 *svp = newSVsv (sv); 1108 *svp = SvOK (sv) ? newSVsv (sv) : 0;
815 SvREFCNT_dec (old); 1109 SvREFCNT_dec (old);
816 return 0; 1110 return 0;
817 } 1111 }
818 } 1112 }
819 1113
… …
831slf_check_nop (pTHX_ struct CoroSLF *frame) 1125slf_check_nop (pTHX_ struct CoroSLF *frame)
832{ 1126{
833 return 0; 1127 return 0;
834} 1128}
835 1129
836static UNOP coro_setup_op; 1130static int
1131slf_check_repeat (pTHX_ struct CoroSLF *frame)
1132{
1133 return 1;
1134}
837 1135
838static void NOINLINE /* noinline to keep it out of the transfer fast path */ 1136static UNOP init_perl_op;
1137
1138ecb_noinline static void /* noinline to keep it out of the transfer fast path */
839coro_setup (pTHX_ struct coro *coro) 1139init_perl (pTHX_ struct coro *coro)
840{ 1140{
841 /* 1141 /*
842 * emulate part of the perl startup here. 1142 * emulate part of the perl startup here.
843 */ 1143 */
844 coro_init_stacks (aTHX); 1144 coro_init_stacks (aTHX);
845 1145
846 PL_runops = RUNOPS_DEFAULT; 1146 PL_runops = RUNOPS_DEFAULT;
847 PL_curcop = &PL_compiling; 1147 PL_curcop = &PL_compiling;
848 PL_in_eval = EVAL_NULL; 1148 PL_in_eval = EVAL_NULL;
849 PL_comppad = 0; 1149 PL_comppad = 0;
1150 PL_comppad_name = 0;
1151 PL_comppad_name_fill = 0;
1152 PL_comppad_name_floor = 0;
850 PL_curpm = 0; 1153 PL_curpm = 0;
851 PL_curpad = 0; 1154 PL_curpad = 0;
852 PL_localizing = 0; 1155 PL_localizing = 0;
853 PL_dirty = 0;
854 PL_restartop = 0; 1156 PL_restartop = 0;
855#if PERL_VERSION_ATLEAST (5,10,0) 1157#if PERL_VERSION_ATLEAST (5,10,0)
856 PL_parser = 0; 1158 PL_parser = 0;
857#endif 1159#endif
1160 PL_hints = 0;
858 1161
859 /* recreate the die/warn hooks */ 1162 /* recreate the die/warn hooks */
860 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1163 PL_diehook = SvREFCNT_inc (rv_diehook);
861 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1164 PL_warnhook = SvREFCNT_inc (rv_warnhook);
862 1165
863 GvSV (PL_defgv) = newSV (0); 1166 GvSV (PL_defgv) = newSV (0);
864 GvAV (PL_defgv) = coro->args; coro->args = 0; 1167 GvAV (PL_defgv) = coro->args; coro->args = 0;
865 GvSV (PL_errgv) = newSV (0); 1168 GvSV (PL_errgv) = newSV (0);
866 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1169 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1170 GvHV (PL_hintgv) = newHV ();
1171#if PERL_VERSION_ATLEAST (5,10,0)
1172 hv_magic (GvHV (PL_hintgv), 0, PERL_MAGIC_hints);
1173#endif
867 PL_rs = newSVsv (GvSV (irsgv)); 1174 PL_rs = newSVsv (GvSV (irsgv));
868 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1175 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
869 1176
870 { 1177 {
871 dSP; 1178 dSP;
872 UNOP myop; 1179 UNOP myop;
873 1180
874 Zero (&myop, 1, UNOP); 1181 Zero (&myop, 1, UNOP);
875 myop.op_next = Nullop; 1182 myop.op_next = Nullop;
1183 myop.op_type = OP_ENTERSUB;
876 myop.op_flags = OPf_WANT_VOID; 1184 myop.op_flags = OPf_WANT_VOID;
877 1185
878 PUSHMARK (SP); 1186 PUSHMARK (SP);
879 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1187 PUSHs ((SV *)coro->startcv);
880 PUTBACK; 1188 PUTBACK;
881 PL_op = (OP *)&myop; 1189 PL_op = (OP *)&myop;
882 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1190 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
883 SPAGAIN;
884 } 1191 }
885 1192
886 /* this newly created coroutine might be run on an existing cctx which most 1193 /* 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. 1194 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
888 */ 1195 */
889 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1196 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 */ 1197 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1198 slf_frame.destroy = 0;
891 1199
892 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ 1200 /* 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; 1201 init_perl_op.op_next = PL_op;
894 coro_setup_op.op_type = OP_CUSTOM; 1202 init_perl_op.op_type = OP_ENTERSUB;
895 coro_setup_op.op_ppaddr = pp_slf; 1203 init_perl_op.op_ppaddr = pp_slf;
896 /* no flags required, as an init function won't be called */ 1204 /* no flags etc. required, as an init function won't be called */
897 1205
898 PL_op = (OP *)&coro_setup_op; 1206 PL_op = (OP *)&init_perl_op;
899 1207
900 /* copy throw, in case it was set before coro_setup */ 1208 /* copy throw, in case it was set before init_perl */
901 CORO_THROW = coro->except; 1209 CORO_THROW = coro->except;
902}
903 1210
1211 SWAP_SVS (coro);
1212
1213 if (ecb_expect_false (enable_times))
1214 {
1215 coro_times_update ();
1216 coro_times_sub (coro);
1217 }
1218}
1219
904static void 1220static void
905coro_destruct (pTHX_ struct coro *coro) 1221coro_unwind_stacks (pTHX)
906{ 1222{
907 if (!IN_DESTRUCT) 1223 if (!IN_DESTRUCT)
908 { 1224 {
909 /* restore all saved variables and stuff */ 1225 /* restore all saved variables and stuff */
910 LEAVE_SCOPE (0); 1226 LEAVE_SCOPE (0);
… …
918 POPSTACK_TO (PL_mainstack); 1234 POPSTACK_TO (PL_mainstack);
919 1235
920 /* unwind main stack */ 1236 /* unwind main stack */
921 dounwind (-1); 1237 dounwind (-1);
922 } 1238 }
1239}
923 1240
924 SvREFCNT_dec (GvSV (PL_defgv)); 1241static void
925 SvREFCNT_dec (GvAV (PL_defgv)); 1242destroy_perl (pTHX_ struct coro *coro)
926 SvREFCNT_dec (GvSV (PL_errgv)); 1243{
927 SvREFCNT_dec (PL_defoutgv); 1244 SV *svf [9];
928 SvREFCNT_dec (PL_rs);
929 SvREFCNT_dec (GvSV (irsgv));
930 1245
931 SvREFCNT_dec (PL_diehook);
932 SvREFCNT_dec (PL_warnhook);
933 1246 {
934 SvREFCNT_dec (CORO_THROW); 1247 SV *old_current = SvRV (coro_current);
1248 struct coro *current = SvSTATE (old_current);
1249
1250 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1251
1252 save_perl (aTHX_ current);
1253
1254 /* this will cause transfer_check to croak on block*/
1255 SvRV_set (coro_current, (SV *)coro->hv);
1256
1257 load_perl (aTHX_ coro);
1258
1259 coro_unwind_stacks (aTHX);
1260
1261 /* restore swapped sv's */
1262 SWAP_SVS (coro);
1263
1264 coro_destruct_stacks (aTHX);
1265
1266 /* now save some sv's to be free'd later */
1267 svf [0] = GvSV (PL_defgv);
1268 svf [1] = (SV *)GvAV (PL_defgv);
1269 svf [2] = GvSV (PL_errgv);
1270 svf [3] = (SV *)PL_defoutgv;
1271 svf [4] = PL_rs;
1272 svf [5] = GvSV (irsgv);
1273 svf [6] = (SV *)GvHV (PL_hintgv);
1274 svf [7] = PL_diehook;
1275 svf [8] = PL_warnhook;
1276 assert (9 == sizeof (svf) / sizeof (*svf));
1277
1278 SvRV_set (coro_current, old_current);
1279
1280 load_perl (aTHX_ current);
1281 }
1282
1283 {
1284 unsigned int i;
1285
1286 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1287 SvREFCNT_dec (svf [i]);
1288
935 SvREFCNT_dec (coro->saved_deffh); 1289 SvREFCNT_dec (coro->saved_deffh);
936 SvREFCNT_dec (coro->rouse_cb); 1290 SvREFCNT_dec (coro->rouse_cb);
937 1291 SvREFCNT_dec (coro->invoke_cb);
938 coro_destruct_stacks (aTHX); 1292 SvREFCNT_dec (coro->invoke_av);
1293 SvREFCNT_dec (coro->on_enter_xs);
1294 SvREFCNT_dec (coro->on_leave_xs);
1295 }
939} 1296}
940 1297
941INLINE void 1298ecb_inline void
942free_coro_mortal (pTHX) 1299free_coro_mortal (pTHX)
943{ 1300{
944 if (expect_true (coro_mortal)) 1301 if (ecb_expect_true (coro_mortal))
945 { 1302 {
946 SvREFCNT_dec (coro_mortal); 1303 SvREFCNT_dec ((SV *)coro_mortal);
947 coro_mortal = 0; 1304 coro_mortal = 0;
948 } 1305 }
949} 1306}
950 1307
951static int 1308static int
952runops_trace (pTHX) 1309runops_trace (pTHX)
953{ 1310{
954 COP *oldcop = 0; 1311 COP *oldcop = 0;
955 int oldcxix = -2; 1312 int oldcxix = -2;
956 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
957 coro_cctx *cctx = coro->cctx;
958 1313
959 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1314 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
960 { 1315 {
961 PERL_ASYNC_CHECK (); 1316 PERL_ASYNC_CHECK ();
962 1317
963 if (cctx->flags & CC_TRACE_ALL) 1318 if (cctx_current->flags & CC_TRACE_ALL)
964 { 1319 {
965 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1320 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
966 { 1321 {
967 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1322 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
968 SV **bot, **top; 1323 SV **bot, **top;
969 AV *av = newAV (); /* return values */ 1324 AV *av = newAV (); /* return values */
970 SV **cb; 1325 SV **cb;
… …
1007 1362
1008 if (PL_curcop != &PL_compiling) 1363 if (PL_curcop != &PL_compiling)
1009 { 1364 {
1010 SV **cb; 1365 SV **cb;
1011 1366
1012 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1367 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB && cxstack_ix >= 0)
1013 { 1368 {
1014 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1369 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1015 1370
1016 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1371 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1017 { 1372 {
1018 runops_proc_t old_runops = PL_runops;
1019 dSP; 1373 dSP;
1020 GV *gv = CvGV (cx->blk_sub.cv); 1374 GV *gv = CvGV (cx->blk_sub.cv);
1021 SV *fullname = sv_2mortal (newSV (0)); 1375 SV *fullname = sv_2mortal (newSV (0));
1022 1376
1023 if (isGV (gv)) 1377 if (isGV (gv))
… …
1041 } 1395 }
1042 1396
1043 oldcxix = cxstack_ix; 1397 oldcxix = cxstack_ix;
1044 } 1398 }
1045 1399
1046 if (cctx->flags & CC_TRACE_LINE) 1400 if (cctx_current->flags & CC_TRACE_LINE)
1047 { 1401 {
1048 dSP; 1402 dSP;
1049 1403
1050 PL_runops = RUNOPS_DEFAULT; 1404 PL_runops = RUNOPS_DEFAULT;
1051 ENTER; 1405 ENTER;
… …
1070 1424
1071 TAINT_NOT; 1425 TAINT_NOT;
1072 return 0; 1426 return 0;
1073} 1427}
1074 1428
1075static struct coro_cctx *cctx_ssl_cctx;
1076static struct CoroSLF cctx_ssl_frame; 1429static struct CoroSLF cctx_ssl_frame;
1077 1430
1078static void 1431static void
1079slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) 1432slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1080{ 1433{
1081 ta->prev = (struct coro *)cctx_ssl_cctx;
1082 ta->next = 0; 1434 ta->prev = 0;
1083} 1435}
1084 1436
1085static int 1437static int
1086slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) 1438slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1087{ 1439{
… …
1089 1441
1090 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ 1442 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1091} 1443}
1092 1444
1093/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ 1445/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1094static void NOINLINE 1446static void ecb_noinline
1095cctx_prepare (pTHX_ coro_cctx *cctx) 1447cctx_prepare (pTHX)
1096{ 1448{
1097 PL_top_env = &PL_start_env; 1449 PL_top_env = &PL_start_env;
1098 1450
1099 if (cctx->flags & CC_TRACE) 1451 if (cctx_current->flags & CC_TRACE)
1100 PL_runops = runops_trace; 1452 PL_runops = runops_trace;
1101 1453
1102 /* we already must be executing an SLF op, there is no other valid way 1454 /* we already must be executing an SLF op, there is no other valid way
1103 * that can lead to creation of a new cctx */ 1455 * that can lead to creation of a new cctx */
1104 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", 1456 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1105 slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); 1457 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1106 1458
1107 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ 1459 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1108 cctx_ssl_cctx = cctx;
1109 cctx_ssl_frame = slf_frame; 1460 cctx_ssl_frame = slf_frame;
1110 1461
1111 slf_frame.prepare = slf_prepare_set_stacklevel; 1462 slf_frame.prepare = slf_prepare_set_stacklevel;
1112 slf_frame.check = slf_check_set_stacklevel; 1463 slf_frame.check = slf_check_set_stacklevel;
1113} 1464}
1114 1465
1115/* the tail of transfer: execute stuff we can only do after a transfer */ 1466/* the tail of transfer: execute stuff we can only do after a transfer */
1116INLINE void 1467ecb_inline void
1117transfer_tail (pTHX) 1468transfer_tail (pTHX)
1118{ 1469{
1119 free_coro_mortal (aTHX); 1470 free_coro_mortal (aTHX);
1471}
1472
1473/* try to exit the same way perl's main function would do */
1474/* we do not bother resetting the environment or other things *7
1475/* that are not, uhm, essential */
1476/* this obviously also doesn't work when perl is embedded */
1477static void ecb_noinline ecb_cold
1478perlish_exit (pTHX)
1479{
1480 int exitstatus = perl_destruct (PL_curinterp);
1481 perl_free (PL_curinterp);
1482 exit (exitstatus);
1120} 1483}
1121 1484
1122/* 1485/*
1123 * this is a _very_ stripped down perl interpreter ;) 1486 * this is a _very_ stripped down perl interpreter ;)
1124 */ 1487 */
… …
1136 /* normally we would need to skip the entersub here */ 1499 /* normally we would need to skip the entersub here */
1137 /* not doing so will re-execute it, which is exactly what we want */ 1500 /* not doing so will re-execute it, which is exactly what we want */
1138 /* PL_nop = PL_nop->op_next */ 1501 /* PL_nop = PL_nop->op_next */
1139 1502
1140 /* inject a fake subroutine call to cctx_init */ 1503 /* inject a fake subroutine call to cctx_init */
1141 cctx_prepare (aTHX_ (coro_cctx *)arg); 1504 cctx_prepare (aTHX);
1142 1505
1143 /* cctx_run is the alternative tail of transfer() */ 1506 /* cctx_run is the alternative tail of transfer() */
1144 transfer_tail (aTHX); 1507 transfer_tail (aTHX);
1145 1508
1146 /* somebody or something will hit me for both perl_run and PL_restartop */ 1509 /* somebody or something will hit me for both perl_run and PL_restartop */
1147 PL_restartop = PL_op; 1510 PL_restartop = PL_op;
1148 perl_run (PL_curinterp); 1511 perl_run (PL_curinterp);
1512 /*
1513 * Unfortunately, there is no way to get at the return values of the
1514 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1515 * runtime errors here, as this is just a random interpreter, not a thread.
1516 */
1149 1517
1150 /* 1518 /*
1151 * If perl-run returns we assume exit() was being called or the coro 1519 * If perl-run returns we assume exit() was being called or the coro
1152 * fell off the end, which seems to be the only valid (non-bug) 1520 * fell off the end, which seems to be the only valid (non-bug)
1153 * reason for perl_run to return. We try to exit by jumping to the 1521 * reason for perl_run to return. We try to mimic whatever perl is normally
1154 * bootstrap-time "top" top_env, as we cannot restore the "main" 1522 * doing in that case. YMMV.
1155 * coroutine as Coro has no such concept
1156 */ 1523 */
1157 PL_top_env = main_top_env; 1524 perlish_exit (aTHX);
1158 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1159 } 1525 }
1160} 1526}
1161 1527
1162static coro_cctx * 1528static coro_cctx *
1163cctx_new () 1529cctx_new (void)
1164{ 1530{
1165 coro_cctx *cctx; 1531 coro_cctx *cctx;
1166 1532
1167 ++cctx_count; 1533 ++cctx_count;
1168 New (0, cctx, 1, coro_cctx); 1534 New (0, cctx, 1, coro_cctx);
… …
1174 return cctx; 1540 return cctx;
1175} 1541}
1176 1542
1177/* create a new cctx only suitable as source */ 1543/* create a new cctx only suitable as source */
1178static coro_cctx * 1544static coro_cctx *
1179cctx_new_empty () 1545cctx_new_empty (void)
1180{ 1546{
1181 coro_cctx *cctx = cctx_new (); 1547 coro_cctx *cctx = cctx_new ();
1182 1548
1183 cctx->sptr = 0; 1549 cctx->stack.sptr = 0;
1184 coro_create (&cctx->cctx, 0, 0, 0, 0); 1550 coro_create (&cctx->cctx, 0, 0, 0, 0);
1185 1551
1186 return cctx; 1552 return cctx;
1187} 1553}
1188 1554
1189/* create a new cctx suitable as destination/running a perl interpreter */ 1555/* create a new cctx suitable as destination/running a perl interpreter */
1190static coro_cctx * 1556static coro_cctx *
1191cctx_new_run () 1557cctx_new_run (void)
1192{ 1558{
1193 coro_cctx *cctx = cctx_new (); 1559 coro_cctx *cctx = cctx_new ();
1194 void *stack_start;
1195 size_t stack_size;
1196 1560
1197#if HAVE_MMAP 1561 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1198 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1199 /* mmap supposedly does allocate-on-write for us */
1200 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1201
1202 if (cctx->sptr != (void *)-1)
1203 {
1204 #if CORO_STACKGUARD
1205 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1206 #endif
1207 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1208 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1209 cctx->flags |= CC_MAPPED;
1210 } 1562 {
1211 else
1212#endif
1213 {
1214 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1215 New (0, cctx->sptr, cctx_stacksize, long);
1216
1217 if (!cctx->sptr)
1218 {
1219 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1563 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1220 _exit (EXIT_FAILURE); 1564 _exit (EXIT_FAILURE);
1221 }
1222
1223 stack_start = cctx->sptr;
1224 stack_size = cctx->ssize;
1225 } 1565 }
1226 1566
1227 #if CORO_USE_VALGRIND
1228 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1229 #endif
1230
1231 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1567 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1232 1568
1233 return cctx; 1569 return cctx;
1234} 1570}
1235 1571
1236static void 1572static void
1237cctx_destroy (coro_cctx *cctx) 1573cctx_destroy (coro_cctx *cctx)
1238{ 1574{
1239 if (!cctx) 1575 if (!cctx)
1240 return; 1576 return;
1241 1577
1578 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1579
1242 --cctx_count; 1580 --cctx_count;
1243 coro_destroy (&cctx->cctx); 1581 coro_destroy (&cctx->cctx);
1244 1582
1245 /* coro_transfer creates new, empty cctx's */ 1583 coro_stack_free (&cctx->stack);
1246 if (cctx->sptr)
1247 {
1248 #if CORO_USE_VALGRIND
1249 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1250 #endif
1251
1252#if HAVE_MMAP
1253 if (cctx->flags & CC_MAPPED)
1254 munmap (cctx->sptr, cctx->ssize);
1255 else
1256#endif
1257 Safefree (cctx->sptr);
1258 }
1259 1584
1260 Safefree (cctx); 1585 Safefree (cctx);
1261} 1586}
1262 1587
1263/* wether this cctx should be destructed */ 1588/* wether this cctx should be destructed */
1264#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1589#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1265 1590
1266static coro_cctx * 1591static coro_cctx *
1267cctx_get (pTHX) 1592cctx_get (pTHX)
1268{ 1593{
1269 while (expect_true (cctx_first)) 1594 while (ecb_expect_true (cctx_first))
1270 { 1595 {
1271 coro_cctx *cctx = cctx_first; 1596 coro_cctx *cctx = cctx_first;
1272 cctx_first = cctx->next; 1597 cctx_first = cctx->next;
1273 --cctx_idle; 1598 --cctx_idle;
1274 1599
1275 if (expect_true (!CCTX_EXPIRED (cctx))) 1600 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1276 return cctx; 1601 return cctx;
1277 1602
1278 cctx_destroy (cctx); 1603 cctx_destroy (cctx);
1279 } 1604 }
1280 1605
… …
1282} 1607}
1283 1608
1284static void 1609static void
1285cctx_put (coro_cctx *cctx) 1610cctx_put (coro_cctx *cctx)
1286{ 1611{
1287 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1612 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1288 1613
1289 /* free another cctx if overlimit */ 1614 /* free another cctx if overlimit */
1290 if (expect_false (cctx_idle >= cctx_max_idle)) 1615 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1291 { 1616 {
1292 coro_cctx *first = cctx_first; 1617 coro_cctx *first = cctx_first;
1293 cctx_first = first->next; 1618 cctx_first = first->next;
1294 --cctx_idle; 1619 --cctx_idle;
1295 1620
… …
1306static void 1631static void
1307transfer_check (pTHX_ struct coro *prev, struct coro *next) 1632transfer_check (pTHX_ struct coro *prev, struct coro *next)
1308{ 1633{
1309 /* TODO: throwing up here is considered harmful */ 1634 /* TODO: throwing up here is considered harmful */
1310 1635
1311 if (expect_true (prev != next)) 1636 if (ecb_expect_true (prev != next))
1312 { 1637 {
1313 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1638 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1314 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1639 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1315 1640
1316 if (expect_false (next->flags & CF_RUNNING)) 1641 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1317 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1318
1319 if (expect_false (next->flags & CF_DESTROYED))
1320 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1642 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1321 1643
1322#if !PERL_VERSION_ATLEAST (5,10,0) 1644#if !PERL_VERSION_ATLEAST (5,10,0)
1323 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1645 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1324 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1646 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1325#endif 1647#endif
1326 } 1648 }
1327} 1649}
1328 1650
1329/* always use the TRANSFER macro */ 1651/* always use the TRANSFER macro */
1330static void NOINLINE /* noinline so we have a fixed stackframe */ 1652static void ecb_noinline /* noinline so we have a fixed stackframe */
1331transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1653transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1332{ 1654{
1333 dSTACKLEVEL; 1655 dSTACKLEVEL;
1334 1656
1335 /* sometimes transfer is only called to set idle_sp */ 1657 /* sometimes transfer is only called to set idle_sp */
1336 if (expect_false (!next)) 1658 if (ecb_expect_false (!prev))
1337 { 1659 {
1338 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1660 cctx_current->idle_sp = STACKLEVEL;
1339 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1661 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1340 } 1662 }
1341 else if (expect_true (prev != next)) 1663 else if (ecb_expect_true (prev != next))
1342 { 1664 {
1343 coro_cctx *prev__cctx; 1665 coro_cctx *cctx_prev;
1344 1666
1345 if (expect_false (prev->flags & CF_NEW)) 1667 if (ecb_expect_false (prev->flags & CF_NEW))
1346 { 1668 {
1347 /* create a new empty/source context */ 1669 /* create a new empty/source context */
1348 prev->cctx = cctx_new_empty ();
1349 prev->flags &= ~CF_NEW; 1670 prev->flags &= ~CF_NEW;
1350 prev->flags |= CF_RUNNING; 1671 prev->flags |= CF_RUNNING;
1351 } 1672 }
1352 1673
1353 prev->flags &= ~CF_RUNNING; 1674 prev->flags &= ~CF_RUNNING;
1354 next->flags |= CF_RUNNING; 1675 next->flags |= CF_RUNNING;
1355 1676
1356 /* first get rid of the old state */ 1677 /* first get rid of the old state */
1357 save_perl (aTHX_ prev); 1678 save_perl (aTHX_ prev);
1358 1679
1359 if (expect_false (next->flags & CF_NEW)) 1680 if (ecb_expect_false (next->flags & CF_NEW))
1360 { 1681 {
1361 /* need to start coroutine */ 1682 /* need to start coroutine */
1362 next->flags &= ~CF_NEW; 1683 next->flags &= ~CF_NEW;
1363 /* setup coroutine call */ 1684 /* setup coroutine call */
1364 coro_setup (aTHX_ next); 1685 init_perl (aTHX_ next);
1365 } 1686 }
1366 else 1687 else
1367 load_perl (aTHX_ next); 1688 load_perl (aTHX_ next);
1368 1689
1369 prev__cctx = prev->cctx;
1370
1371 /* possibly untie and reuse the cctx */ 1690 /* possibly untie and reuse the cctx */
1372 if (expect_true ( 1691 if (ecb_expect_true (
1373 prev__cctx->idle_sp == STACKLEVEL 1692 cctx_current->idle_sp == STACKLEVEL
1374 && !(prev__cctx->flags & CC_TRACE) 1693 && !(cctx_current->flags & CC_TRACE)
1375 && !force_cctx 1694 && !force_cctx
1376 )) 1695 ))
1377 { 1696 {
1378 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1697 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1379 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1698 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1380 1699
1381 prev->cctx = 0;
1382
1383 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1700 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1384 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1701 /* without this the next cctx_get might destroy the running cctx while still in use */
1385 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1702 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1386 if (!next->cctx) 1703 if (ecb_expect_true (!next->cctx))
1387 next->cctx = cctx_get (aTHX); 1704 next->cctx = cctx_get (aTHX);
1388 1705
1389 cctx_put (prev__cctx); 1706 cctx_put (cctx_current);
1390 } 1707 }
1708 else
1709 prev->cctx = cctx_current;
1391 1710
1392 ++next->usecount; 1711 ++next->usecount;
1393 1712
1394 if (expect_true (!next->cctx)) 1713 cctx_prev = cctx_current;
1395 next->cctx = cctx_get (aTHX); 1714 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1396 1715
1397 if (expect_false (prev__cctx != next->cctx)) 1716 next->cctx = 0;
1717
1718 if (ecb_expect_false (cctx_prev != cctx_current))
1398 { 1719 {
1399 prev__cctx->top_env = PL_top_env; 1720 cctx_prev->top_env = PL_top_env;
1400 PL_top_env = next->cctx->top_env; 1721 PL_top_env = cctx_current->top_env;
1401 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1722 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1402 } 1723 }
1403 1724
1404 transfer_tail (aTHX); 1725 transfer_tail (aTHX);
1405 } 1726 }
1406} 1727}
… …
1408#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1729#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1409#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1730#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1410 1731
1411/** high level stuff ********************************************************/ 1732/** high level stuff ********************************************************/
1412 1733
1734/* this function is actually Coro, not Coro::State, but we call it from here */
1735/* because it is convenient - but it hasn't been declared yet for that reason */
1413static int 1736static void
1737coro_call_on_destroy (pTHX_ struct coro *coro);
1738
1739static void
1414coro_state_destroy (pTHX_ struct coro *coro) 1740coro_state_destroy (pTHX_ struct coro *coro)
1415{ 1741{
1416 if (coro->flags & CF_DESTROYED) 1742 if (coro->flags & CF_ZOMBIE)
1417 return 0; 1743 return;
1418 1744
1419 if (coro->on_destroy)
1420 coro->on_destroy (aTHX_ coro); 1745 slf_destroy (aTHX_ coro);
1421 1746
1422 coro->flags |= CF_DESTROYED; 1747 coro->flags |= CF_ZOMBIE;
1423 1748
1424 if (coro->flags & CF_READY) 1749 if (coro->flags & CF_READY)
1425 { 1750 {
1426 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1751 /* reduce nready, as destroying a ready coro effectively unreadies it */
1427 /* alternative: look through all ready queues and remove the coro */ 1752 /* alternative: look through all ready queues and remove the coro */
1428 --coro_nready; 1753 --coro_nready;
1429 } 1754 }
1430 else 1755 else
1431 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1756 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1432 1757
1433 if (coro->mainstack && coro->mainstack != main_mainstack) 1758 if (coro->next) coro->next->prev = coro->prev;
1434 { 1759 if (coro->prev) coro->prev->next = coro->next;
1435 struct coro temp; 1760 if (coro == coro_first) coro_first = coro->next;
1436 1761
1437 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); 1762 if (coro->mainstack
1438 1763 && coro->mainstack != main_mainstack
1439 save_perl (aTHX_ &temp); 1764 && coro->slot
1765 && !PL_dirty)
1440 load_perl (aTHX_ coro); 1766 destroy_perl (aTHX_ coro);
1441
1442 coro_destruct (aTHX_ coro);
1443
1444 load_perl (aTHX_ &temp);
1445
1446 coro->slot = 0;
1447 }
1448 1767
1449 cctx_destroy (coro->cctx); 1768 cctx_destroy (coro->cctx);
1450 SvREFCNT_dec (coro->startcv); 1769 SvREFCNT_dec (coro->startcv);
1451 SvREFCNT_dec (coro->args); 1770 SvREFCNT_dec (coro->args);
1771 SvREFCNT_dec (coro->swap_sv);
1772 SvREFCNT_dec (CORO_THROW);
1452 1773
1453 if (coro->next) coro->next->prev = coro->prev; 1774 coro_call_on_destroy (aTHX_ coro);
1454 if (coro->prev) coro->prev->next = coro->next;
1455 if (coro == coro_first) coro_first = coro->next;
1456 1775
1457 return 1; 1776 /* more destruction mayhem in coro_state_free */
1458} 1777}
1459 1778
1460static int 1779static int
1461coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1780coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1462{ 1781{
1463 struct coro *coro = (struct coro *)mg->mg_ptr; 1782 struct coro *coro = (struct coro *)mg->mg_ptr;
1464 mg->mg_ptr = 0; 1783 mg->mg_ptr = 0;
1465 1784
1466 coro->hv = 0;
1467
1468 if (--coro->refcnt < 0)
1469 {
1470 coro_state_destroy (aTHX_ coro); 1785 coro_state_destroy (aTHX_ coro);
1786 SvREFCNT_dec (coro->on_destroy);
1787 SvREFCNT_dec (coro->status);
1788
1471 Safefree (coro); 1789 Safefree (coro);
1472 }
1473 1790
1474 return 0; 1791 return 0;
1475} 1792}
1476 1793
1477static int 1794static int ecb_cold
1478coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1795coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1479{ 1796{
1480 struct coro *coro = (struct coro *)mg->mg_ptr; 1797 /* called when perl clones the current process the slow way (windows process emulation) */
1481 1798 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1482 ++coro->refcnt; 1799 mg->mg_ptr = 0;
1800 mg->mg_virtual = 0;
1483 1801
1484 return 0; 1802 return 0;
1485} 1803}
1486 1804
1487static MGVTBL coro_state_vtbl = { 1805static MGVTBL coro_state_vtbl = {
… …
1510 1828
1511 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1829 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1512 TRANSFER (ta, 1); 1830 TRANSFER (ta, 1);
1513} 1831}
1514 1832
1515/*****************************************************************************/
1516/* gensub: simple closure generation utility */
1517
1518#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1519
1520/* create a closure from XS, returns a code reference */
1521/* the arg can be accessed via GENSUB_ARG from the callback */
1522/* the callback must use dXSARGS/XSRETURN */
1523static SV *
1524gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1525{
1526 CV *cv = (CV *)newSV (0);
1527
1528 sv_upgrade ((SV *)cv, SVt_PVCV);
1529
1530 CvANON_on (cv);
1531 CvISXSUB_on (cv);
1532 CvXSUB (cv) = xsub;
1533 GENSUB_ARG = arg;
1534
1535 return newRV_noinc ((SV *)cv);
1536}
1537
1538/** Coro ********************************************************************/ 1833/** Coro ********************************************************************/
1539 1834
1540INLINE void 1835ecb_inline void
1541coro_enq (pTHX_ struct coro *coro) 1836coro_enq (pTHX_ struct coro *coro)
1542{ 1837{
1543 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1838 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1544}
1545 1839
1546INLINE SV * 1840 SvREFCNT_inc_NN (coro->hv);
1841
1842 coro->next_ready = 0;
1843 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1844 ready [1] = coro;
1845}
1846
1847ecb_inline struct coro *
1547coro_deq (pTHX) 1848coro_deq (pTHX)
1548{ 1849{
1549 int prio; 1850 int prio;
1550 1851
1551 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1852 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1552 if (AvFILLp (coro_ready [prio]) >= 0) 1853 {
1553 return av_shift (coro_ready [prio]); 1854 struct coro **ready = coro_ready [prio];
1855
1856 if (ready [0])
1857 {
1858 struct coro *coro = ready [0];
1859 ready [0] = coro->next_ready;
1860 return coro;
1861 }
1862 }
1554 1863
1555 return 0; 1864 return 0;
1865}
1866
1867static void
1868invoke_sv_ready_hook_helper (void)
1869{
1870 dTHX;
1871 dSP;
1872
1873 ENTER;
1874 SAVETMPS;
1875
1876 PUSHMARK (SP);
1877 PUTBACK;
1878 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1879
1880 FREETMPS;
1881 LEAVE;
1556} 1882}
1557 1883
1558static int 1884static int
1559api_ready (pTHX_ SV *coro_sv) 1885api_ready (pTHX_ SV *coro_sv)
1560{ 1886{
1561 struct coro *coro;
1562 SV *sv_hook;
1563 void (*xs_hook)(void);
1564
1565 if (SvROK (coro_sv))
1566 coro_sv = SvRV (coro_sv);
1567
1568 coro = SvSTATE (coro_sv); 1887 struct coro *coro = SvSTATE (coro_sv);
1569 1888
1570 if (coro->flags & CF_READY) 1889 if (coro->flags & CF_READY)
1571 return 0; 1890 return 0;
1572 1891
1573 coro->flags |= CF_READY; 1892 coro->flags |= CF_READY;
1574 1893
1575 sv_hook = coro_nready ? 0 : coro_readyhook;
1576 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1577
1578 coro_enq (aTHX_ coro); 1894 coro_enq (aTHX_ coro);
1579 ++coro_nready;
1580 1895
1581 if (sv_hook) 1896 if (!coro_nready++)
1582 { 1897 if (coroapi.readyhook)
1583 dSP; 1898 coroapi.readyhook ();
1584
1585 ENTER;
1586 SAVETMPS;
1587
1588 PUSHMARK (SP);
1589 PUTBACK;
1590 call_sv (sv_hook, G_VOID | G_DISCARD);
1591
1592 FREETMPS;
1593 LEAVE;
1594 }
1595
1596 if (xs_hook)
1597 xs_hook ();
1598 1899
1599 return 1; 1900 return 1;
1600} 1901}
1601 1902
1602static int 1903static int
1603api_is_ready (pTHX_ SV *coro_sv) 1904api_is_ready (pTHX_ SV *coro_sv)
1604{ 1905{
1605 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1906 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1606} 1907}
1607 1908
1608INLINE void 1909/* expects to own a reference to next->hv */
1910ecb_inline void
1609prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1911prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1610{ 1912{
1611 SV *prev_sv, *next_sv;
1612
1613 for (;;)
1614 {
1615 next_sv = coro_deq (aTHX);
1616
1617 /* nothing to schedule: call the idle handler */
1618 if (expect_false (!next_sv))
1619 {
1620 dSP;
1621
1622 ENTER;
1623 SAVETMPS;
1624
1625 PUSHMARK (SP);
1626 PUTBACK;
1627 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1628
1629 FREETMPS;
1630 LEAVE;
1631 continue;
1632 }
1633
1634 ta->next = SvSTATE_hv (next_sv);
1635
1636 /* cannot transfer to destroyed coros, skip and look for next */
1637 if (expect_false (ta->next->flags & CF_DESTROYED))
1638 {
1639 SvREFCNT_dec (next_sv);
1640 /* coro_nready has already been taken care of by destroy */
1641 continue;
1642 }
1643
1644 --coro_nready;
1645 break;
1646 }
1647
1648 /* free this only after the transfer */
1649 prev_sv = SvRV (coro_current); 1913 SV *prev_sv = SvRV (coro_current);
1914
1650 ta->prev = SvSTATE_hv (prev_sv); 1915 ta->prev = SvSTATE_hv (prev_sv);
1916 ta->next = next;
1917
1651 TRANSFER_CHECK (*ta); 1918 TRANSFER_CHECK (*ta);
1652 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1919
1653 ta->next->flags &= ~CF_READY;
1654 SvRV_set (coro_current, next_sv); 1920 SvRV_set (coro_current, (SV *)next->hv);
1655 1921
1656 free_coro_mortal (aTHX); 1922 free_coro_mortal (aTHX);
1657 coro_mortal = prev_sv; 1923 coro_mortal = prev_sv;
1658} 1924}
1659 1925
1660INLINE void 1926static void
1927prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1928{
1929 for (;;)
1930 {
1931 struct coro *next = coro_deq (aTHX);
1932
1933 if (ecb_expect_true (next))
1934 {
1935 /* cannot transfer to destroyed coros, skip and look for next */
1936 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1937 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1938 else
1939 {
1940 next->flags &= ~CF_READY;
1941 --coro_nready;
1942
1943 prepare_schedule_to (aTHX_ ta, next);
1944 break;
1945 }
1946 }
1947 else
1948 {
1949 /* nothing to schedule: call the idle handler */
1950 if (SvROK (sv_idle)
1951 && SvOBJECT (SvRV (sv_idle)))
1952 {
1953 if (SvRV (sv_idle) == SvRV (coro_current))
1954 {
1955 require_pv ("Carp");
1956
1957 {
1958 dSP;
1959
1960 ENTER;
1961 SAVETMPS;
1962
1963 PUSHMARK (SP);
1964 XPUSHs (sv_2mortal (newSVpv ("FATAL: $Coro::idle blocked itself - did you try to block inside an event loop callback? Caught", 0)));
1965 PUTBACK;
1966 call_pv ("Carp::confess", G_VOID | G_DISCARD);
1967
1968 FREETMPS;
1969 LEAVE;
1970 }
1971 }
1972
1973 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1974 api_ready (aTHX_ SvRV (sv_idle));
1975 --coro_nready;
1976 }
1977 else
1978 {
1979 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1980 dSP;
1981
1982 ENTER;
1983 SAVETMPS;
1984
1985 PUSHMARK (SP);
1986 PUTBACK;
1987 call_sv (sv_idle, G_VOID | G_DISCARD);
1988
1989 FREETMPS;
1990 LEAVE;
1991 }
1992 }
1993 }
1994}
1995
1996ecb_inline void
1661prepare_cede (pTHX_ struct coro_transfer_args *ta) 1997prepare_cede (pTHX_ struct coro_transfer_args *ta)
1662{ 1998{
1663 api_ready (aTHX_ coro_current); 1999 api_ready (aTHX_ coro_current);
1664 prepare_schedule (aTHX_ ta); 2000 prepare_schedule (aTHX_ ta);
1665} 2001}
1666 2002
1667INLINE void 2003ecb_inline void
1668prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 2004prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1669{ 2005{
1670 SV *prev = SvRV (coro_current); 2006 SV *prev = SvRV (coro_current);
1671 2007
1672 if (coro_nready) 2008 if (coro_nready)
… …
1685 2021
1686 prepare_schedule (aTHX_ &ta); 2022 prepare_schedule (aTHX_ &ta);
1687 TRANSFER (ta, 1); 2023 TRANSFER (ta, 1);
1688} 2024}
1689 2025
2026static void
2027api_schedule_to (pTHX_ SV *coro_sv)
2028{
2029 struct coro_transfer_args ta;
2030 struct coro *next = SvSTATE (coro_sv);
2031
2032 SvREFCNT_inc_NN (coro_sv);
2033 prepare_schedule_to (aTHX_ &ta, next);
2034}
2035
1690static int 2036static int
1691api_cede (pTHX) 2037api_cede (pTHX)
1692{ 2038{
1693 struct coro_transfer_args ta; 2039 struct coro_transfer_args ta;
1694 2040
1695 prepare_cede (aTHX_ &ta); 2041 prepare_cede (aTHX_ &ta);
1696 2042
1697 if (expect_true (ta.prev != ta.next)) 2043 if (ecb_expect_true (ta.prev != ta.next))
1698 { 2044 {
1699 TRANSFER (ta, 1); 2045 TRANSFER (ta, 1);
1700 return 1; 2046 return 1;
1701 } 2047 }
1702 else 2048 else
… …
1721static void 2067static void
1722api_trace (pTHX_ SV *coro_sv, int flags) 2068api_trace (pTHX_ SV *coro_sv, int flags)
1723{ 2069{
1724 struct coro *coro = SvSTATE (coro_sv); 2070 struct coro *coro = SvSTATE (coro_sv);
1725 2071
2072 if (coro->flags & CF_RUNNING)
2073 croak ("cannot enable tracing on a running coroutine, caught");
2074
1726 if (flags & CC_TRACE) 2075 if (flags & CC_TRACE)
1727 { 2076 {
1728 if (!coro->cctx) 2077 if (!coro->cctx)
1729 coro->cctx = cctx_new_run (); 2078 coro->cctx = cctx_new_run ();
1730 else if (!(coro->cctx->flags & CC_TRACE)) 2079 else if (!(coro->cctx->flags & CC_TRACE))
1731 croak ("cannot enable tracing on coroutine with custom stack,"); 2080 croak ("cannot enable tracing on coroutine with custom stack, caught");
1732 2081
1733 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2082 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1734 } 2083 }
1735 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2084 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1736 { 2085 {
… …
1741 else 2090 else
1742 coro->slot->runops = RUNOPS_DEFAULT; 2091 coro->slot->runops = RUNOPS_DEFAULT;
1743 } 2092 }
1744} 2093}
1745 2094
2095static void
2096coro_push_av (pTHX_ AV *av, I32 gimme_v)
2097{
2098 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2099 {
2100 dSP;
2101
2102 if (gimme_v == G_SCALAR)
2103 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2104 else
2105 {
2106 int i;
2107 EXTEND (SP, AvFILLp (av) + 1);
2108
2109 for (i = 0; i <= AvFILLp (av); ++i)
2110 PUSHs (AvARRAY (av)[i]);
2111 }
2112
2113 PUTBACK;
2114 }
2115}
2116
2117static void
2118coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2119{
2120 if (!coro->on_destroy)
2121 coro->on_destroy = newAV ();
2122
2123 av_push (coro->on_destroy, cb);
2124}
2125
2126static void
2127slf_destroy_join (pTHX_ struct CoroSLF *frame)
2128{
2129 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2130}
2131
2132static int
2133slf_check_join (pTHX_ struct CoroSLF *frame)
2134{
2135 struct coro *coro = (struct coro *)frame->data;
2136
2137 if (!coro->status)
2138 return 1;
2139
2140 frame->destroy = 0;
2141
2142 coro_push_av (aTHX_ coro->status, GIMME_V);
2143
2144 SvREFCNT_dec ((SV *)coro->hv);
2145
2146 return 0;
2147}
2148
2149static void
2150slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2151{
2152 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2153
2154 if (items > 1)
2155 croak ("join called with too many arguments");
2156
2157 if (coro->status)
2158 frame->prepare = prepare_nop;
2159 else
2160 {
2161 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2162 frame->prepare = prepare_schedule;
2163 }
2164
2165 frame->check = slf_check_join;
2166 frame->destroy = slf_destroy_join;
2167 frame->data = (void *)coro;
2168 SvREFCNT_inc (coro->hv);
2169}
2170
2171static void
2172coro_call_on_destroy (pTHX_ struct coro *coro)
2173{
2174 AV *od = coro->on_destroy;
2175
2176 if (!od)
2177 return;
2178
2179 coro->on_destroy = 0;
2180 sv_2mortal ((SV *)od);
2181
2182 while (AvFILLp (od) >= 0)
2183 {
2184 SV *cb = sv_2mortal (av_pop (od));
2185
2186 /* coro hv's (and only hv's at the moment) are supported as well */
2187 if (SvSTATEhv_p (aTHX_ cb))
2188 api_ready (aTHX_ cb);
2189 else
2190 {
2191 dSP; /* don't disturb outer sp */
2192 PUSHMARK (SP);
2193
2194 if (coro->status)
2195 {
2196 PUTBACK;
2197 coro_push_av (aTHX_ coro->status, G_ARRAY);
2198 SPAGAIN;
2199 }
2200
2201 PUTBACK;
2202 call_sv (cb, G_VOID | G_DISCARD);
2203 }
2204 }
2205}
2206
2207static void
2208coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2209{
2210 AV *av;
2211
2212 if (coro->status)
2213 {
2214 av = coro->status;
2215 av_clear (av);
2216 }
2217 else
2218 av = coro->status = newAV ();
2219
2220 /* items are actually not so common, so optimise for this case */
2221 if (items)
2222 {
2223 int i;
2224
2225 av_extend (av, items - 1);
2226
2227 for (i = 0; i < items; ++i)
2228 av_push (av, SvREFCNT_inc_NN (arg [i]));
2229 }
2230}
2231
2232static void
2233slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2234{
2235 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2236 api_ready (aTHX_ sv_manager);
2237
2238 frame->prepare = prepare_schedule;
2239 frame->check = slf_check_repeat;
2240
2241 /* as a minor optimisation, we could unwind all stacks here */
2242 /* but that puts extra pressure on pp_slf, and is not worth much */
2243 /*coro_unwind_stacks (aTHX);*/
2244}
2245
2246static void
2247slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2248{
2249 HV *coro_hv = (HV *)SvRV (coro_current);
2250
2251 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2252 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2253}
2254
2255static void
2256slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2257{
2258 HV *coro_hv;
2259 struct coro *coro;
2260
2261 if (items <= 0)
2262 croak ("Coro::cancel called without coro object,");
2263
2264 coro = SvSTATE (arg [0]);
2265 coro_hv = coro->hv;
2266
2267 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2268
2269 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2270 {
2271 /* coro currently busy cancelling something, so just notify it */
2272 coro->slf_frame.data = (void *)coro;
2273
2274 frame->prepare = prepare_nop;
2275 frame->check = slf_check_nop;
2276 }
2277 else if (coro_hv == (HV *)SvRV (coro_current))
2278 {
2279 /* cancelling the current coro is allowed, and equals terminate */
2280 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2281 }
2282 else
2283 {
2284 struct coro *self = SvSTATE_current;
2285
2286 if (!self)
2287 croak ("Coro::cancel called outside of thread content,");
2288
2289 /* otherwise we cancel directly, purely for speed reasons
2290 * unfortunately, this requires some magic trickery, as
2291 * somebody else could cancel us, so we have to fight the cancellation.
2292 * this is ugly, and hopefully fully worth the extra speed.
2293 * besides, I can't get the slow-but-safe version working...
2294 */
2295 slf_frame.data = 0;
2296 self->flags |= CF_NOCANCEL;
2297 coro_state_destroy (aTHX_ coro);
2298 self->flags &= ~CF_NOCANCEL;
2299
2300 if (slf_frame.data)
2301 {
2302 /* while we were busy we have been cancelled, so terminate */
2303 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2304 }
2305 else
2306 {
2307 frame->prepare = prepare_nop;
2308 frame->check = slf_check_nop;
2309 }
2310 }
2311}
2312
2313static int
2314slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2315{
2316 frame->prepare = 0;
2317 coro_unwind_stacks (aTHX);
2318
2319 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2320
2321 return 1;
2322}
2323
2324static int
2325safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2326{
2327 if (coro->cctx)
2328 croak ("coro inside C callback, unable to cancel at this time, caught");
2329
2330 if (coro->flags & CF_NEW)
2331 {
2332 coro_set_status (aTHX_ coro, arg, items);
2333 coro_state_destroy (aTHX_ coro);
2334 }
2335 else
2336 {
2337 if (!coro->slf_frame.prepare)
2338 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2339
2340 slf_destroy (aTHX_ coro);
2341
2342 coro_set_status (aTHX_ coro, arg, items);
2343 coro->slf_frame.prepare = prepare_nop;
2344 coro->slf_frame.check = slf_check_safe_cancel;
2345
2346 api_ready (aTHX_ (SV *)coro->hv);
2347 }
2348
2349 return 1;
2350}
2351
2352/*****************************************************************************/
2353/* async pool handler */
2354
2355static int
2356slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2357{
2358 HV *hv = (HV *)SvRV (coro_current);
2359 struct coro *coro = (struct coro *)frame->data;
2360
2361 if (!coro->invoke_cb)
2362 return 1; /* loop till we have invoke */
2363 else
2364 {
2365 hv_store (hv, "desc", sizeof ("desc") - 1,
2366 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2367
2368 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2369
2370 {
2371 dSP;
2372 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2373 PUTBACK;
2374 }
2375
2376 SvREFCNT_dec (GvAV (PL_defgv));
2377 GvAV (PL_defgv) = coro->invoke_av;
2378 coro->invoke_av = 0;
2379
2380 return 0;
2381 }
2382}
2383
2384static void
2385slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2386{
2387 HV *hv = (HV *)SvRV (coro_current);
2388 struct coro *coro = SvSTATE_hv ((SV *)hv);
2389
2390 if (ecb_expect_true (coro->saved_deffh))
2391 {
2392 /* subsequent iteration */
2393 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2394 coro->saved_deffh = 0;
2395
2396 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2397 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2398 {
2399 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2400 return;
2401 }
2402 else
2403 {
2404 av_clear (GvAV (PL_defgv));
2405 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2406
2407 coro->prio = 0;
2408
2409 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2410 api_trace (aTHX_ coro_current, 0);
2411
2412 frame->prepare = prepare_schedule;
2413 av_push (av_async_pool, SvREFCNT_inc (hv));
2414 }
2415 }
2416 else
2417 {
2418 /* first iteration, simply fall through */
2419 frame->prepare = prepare_nop;
2420 }
2421
2422 frame->check = slf_check_pool_handler;
2423 frame->data = (void *)coro;
2424}
2425
1746/*****************************************************************************/ 2426/*****************************************************************************/
1747/* rouse callback */ 2427/* rouse callback */
1748 2428
1749#define CORO_MAGIC_type_rouse PERL_MAGIC_ext 2429#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1750 2430
1751static void 2431static void
1752coro_rouse_callback (pTHX_ CV *cv) 2432coro_rouse_callback (pTHX_ CV *cv)
1753{ 2433{
1754 dXSARGS; 2434 dXSARGS;
1755 SV *data = (SV *)GENSUB_ARG; 2435 SV *data = (SV *)S_GENSUB_ARG;
1756 2436
1757 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2437 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1758 { 2438 {
1759 /* first call, set args */ 2439 /* first call, set args */
1760 int i; 2440 SV *coro = SvRV (data);
1761 AV *av = newAV (); 2441 AV *av = newAV ();
1762 SV *coro = SvRV (data);
1763 2442
1764 SvRV_set (data, (SV *)av); 2443 SvRV_set (data, (SV *)av);
1765 api_ready (aTHX_ coro);
1766 SvREFCNT_dec (coro);
1767 2444
1768 /* better take a full copy of the arguments */ 2445 /* better take a full copy of the arguments */
1769 while (items--) 2446 while (items--)
1770 av_store (av, items, newSVsv (ST (items))); 2447 av_store (av, items, newSVsv (ST (items)));
2448
2449 api_ready (aTHX_ coro);
2450 SvREFCNT_dec (coro);
1771 } 2451 }
1772 2452
1773 XSRETURN_EMPTY; 2453 XSRETURN_EMPTY;
1774} 2454}
1775 2455
1776static int 2456static int
1777slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) 2457slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1778{ 2458{
1779 SV *data = (SV *)frame->data; 2459 SV *data = (SV *)frame->data;
1780 2460
1781 if (CORO_THROW) 2461 if (CORO_THROW)
1782 return 0; 2462 return 0;
1783 2463
1784 if (SvTYPE (SvRV (data)) != SVt_PVAV) 2464 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1785 return 1; 2465 return 1;
… …
1792 2472
1793 EXTEND (SP, AvFILLp (av) + 1); 2473 EXTEND (SP, AvFILLp (av) + 1);
1794 for (i = 0; i <= AvFILLp (av); ++i) 2474 for (i = 0; i <= AvFILLp (av); ++i)
1795 PUSHs (sv_2mortal (AvARRAY (av)[i])); 2475 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1796 2476
1797 /* we have stolen the elements, so ste length to zero and free */ 2477 /* we have stolen the elements, so set length to zero and free */
1798 AvFILLp (av) = -1; 2478 AvFILLp (av) = -1;
1799 av_undef (av); 2479 av_undef (av);
1800 2480
1801 PUTBACK; 2481 PUTBACK;
1802 } 2482 }
… …
1821 cb = sv_2mortal (coro->rouse_cb); 2501 cb = sv_2mortal (coro->rouse_cb);
1822 coro->rouse_cb = 0; 2502 coro->rouse_cb = 0;
1823 } 2503 }
1824 2504
1825 if (!SvROK (cb) 2505 if (!SvROK (cb)
1826 || SvTYPE (SvRV (cb)) != SVt_PVCV 2506 || SvTYPE (SvRV (cb)) != SVt_PVCV
1827 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) 2507 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1828 croak ("Coro::rouse_wait called with illegal callback argument,"); 2508 croak ("Coro::rouse_wait called with illegal callback argument,");
1829 2509
1830 { 2510 {
1831 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ 2511 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1832 SV *data = (SV *)GENSUB_ARG; 2512 SV *data = (SV *)S_GENSUB_ARG;
1833 2513
1834 frame->data = (void *)data; 2514 frame->data = (void *)data;
1835 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; 2515 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1836 frame->check = slf_check_rouse_wait; 2516 frame->check = slf_check_rouse_wait;
1837 } 2517 }
… …
1841coro_new_rouse_cb (pTHX) 2521coro_new_rouse_cb (pTHX)
1842{ 2522{
1843 HV *hv = (HV *)SvRV (coro_current); 2523 HV *hv = (HV *)SvRV (coro_current);
1844 struct coro *coro = SvSTATE_hv (hv); 2524 struct coro *coro = SvSTATE_hv (hv);
1845 SV *data = newRV_inc ((SV *)hv); 2525 SV *data = newRV_inc ((SV *)hv);
1846 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); 2526 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1847 2527
1848 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); 2528 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1849 SvREFCNT_dec (data); /* magicext increases the refcount */ 2529 SvREFCNT_dec (data); /* magicext increases the refcount */
1850 2530
1851 SvREFCNT_dec (coro->rouse_cb); 2531 SvREFCNT_dec (coro->rouse_cb);
… …
1909 frame->prepare = prepare_schedule; 2589 frame->prepare = prepare_schedule;
1910 frame->check = slf_check_nop; 2590 frame->check = slf_check_nop;
1911} 2591}
1912 2592
1913static void 2593static void
2594slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2595{
2596 struct coro *next = (struct coro *)slf_frame.data;
2597
2598 SvREFCNT_inc_NN (next->hv);
2599 prepare_schedule_to (aTHX_ ta, next);
2600}
2601
2602static void
2603slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2604{
2605 if (!items)
2606 croak ("Coro::schedule_to expects a coroutine argument, caught");
2607
2608 frame->data = (void *)SvSTATE (arg [0]);
2609 frame->prepare = slf_prepare_schedule_to;
2610 frame->check = slf_check_nop;
2611}
2612
2613static void
2614slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2615{
2616 api_ready (aTHX_ SvRV (coro_current));
2617
2618 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2619}
2620
2621static void
1914slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2622slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1915{ 2623{
1916 frame->prepare = prepare_cede; 2624 frame->prepare = prepare_cede;
1917 frame->check = slf_check_nop; 2625 frame->check = slf_check_nop;
1918} 2626}
… …
1920static void 2628static void
1921slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2629slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1922{ 2630{
1923 frame->prepare = prepare_cede_notself; 2631 frame->prepare = prepare_cede_notself;
1924 frame->check = slf_check_nop; 2632 frame->check = slf_check_nop;
2633}
2634
2635/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2636static void
2637slf_destroy (pTHX_ struct coro *coro)
2638{
2639 struct CoroSLF frame = coro->slf_frame;
2640
2641 /*
2642 * The on_destroy below most likely is from an SLF call.
2643 * Since by definition the SLF call will not finish when we destroy
2644 * the coro, we will have to force-finish it here, otherwise
2645 * cleanup functions cannot call SLF functions.
2646 */
2647 coro->slf_frame.prepare = 0;
2648
2649 /* this callback is reserved for slf functions needing to do cleanup */
2650 if (frame.destroy && frame.prepare && !PL_dirty)
2651 frame.destroy (aTHX_ &frame);
1925} 2652}
1926 2653
1927/* 2654/*
1928 * these not obviously related functions are all rolled into one 2655 * these not obviously related functions are all rolled into one
1929 * function to increase chances that they all will call transfer with the same 2656 * function to increase chances that they all will call transfer with the same
… …
1936 I32 checkmark; /* mark SP to see how many elements check has pushed */ 2663 I32 checkmark; /* mark SP to see how many elements check has pushed */
1937 2664
1938 /* set up the slf frame, unless it has already been set-up */ 2665 /* set up the slf frame, unless it has already been set-up */
1939 /* the latter happens when a new coro has been started */ 2666 /* the latter happens when a new coro has been started */
1940 /* or when a new cctx was attached to an existing coroutine */ 2667 /* or when a new cctx was attached to an existing coroutine */
1941 if (expect_true (!slf_frame.prepare)) 2668 if (ecb_expect_true (!slf_frame.prepare))
1942 { 2669 {
1943 /* first iteration */ 2670 /* first iteration */
1944 dSP; 2671 dSP;
1945 SV **arg = PL_stack_base + TOPMARK + 1; 2672 SV **arg = PL_stack_base + TOPMARK + 1;
1946 int items = SP - arg; /* args without function object */ 2673 int items = SP - arg; /* args without function object */
… …
1987 while (slf_frame.check (aTHX_ &slf_frame)); 2714 while (slf_frame.check (aTHX_ &slf_frame));
1988 2715
1989 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ 2716 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1990 2717
1991 /* exception handling */ 2718 /* exception handling */
1992 if (expect_false (CORO_THROW)) 2719 if (ecb_expect_false (CORO_THROW))
1993 { 2720 {
1994 SV *exception = sv_2mortal (CORO_THROW); 2721 SV *exception = sv_2mortal (CORO_THROW);
1995 2722
1996 CORO_THROW = 0; 2723 CORO_THROW = 0;
1997 sv_setsv (ERRSV, exception); 2724 sv_setsv (ERRSV, exception);
1998 croak (0); 2725 croak (0);
1999 } 2726 }
2000 2727
2001 /* return value handling - mostly like entersub */ 2728 /* return value handling - mostly like entersub */
2002 /* make sure we put something on the stack in scalar context */ 2729 /* make sure we put something on the stack in scalar context */
2003 if (GIMME_V == G_SCALAR) 2730 if (GIMME_V == G_SCALAR
2731 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2004 { 2732 {
2005 dSP; 2733 dSP;
2006 SV **bot = PL_stack_base + checkmark; 2734 SV **bot = PL_stack_base + checkmark;
2007 2735
2008 if (sp == bot) /* too few, push undef */ 2736 if (sp == bot) /* too few, push undef */
2009 bot [1] = &PL_sv_undef; 2737 bot [1] = &PL_sv_undef;
2010 else if (sp != bot + 1) /* too many, take last one */ 2738 else /* too many, take last one */
2011 bot [1] = *sp; 2739 bot [1] = *sp;
2012 2740
2013 SP = bot + 1; 2741 SP = bot + 1;
2014 2742
2015 PUTBACK; 2743 PUTBACK;
… …
2048 if (PL_op->op_flags & OPf_STACKED) 2776 if (PL_op->op_flags & OPf_STACKED)
2049 { 2777 {
2050 if (items > slf_arga) 2778 if (items > slf_arga)
2051 { 2779 {
2052 slf_arga = items; 2780 slf_arga = items;
2053 free (slf_argv); 2781 Safefree (slf_argv);
2054 slf_argv = malloc (slf_arga * sizeof (SV *)); 2782 New (0, slf_argv, slf_arga, SV *);
2055 } 2783 }
2056 2784
2057 slf_argc = items; 2785 slf_argc = items;
2058 2786
2059 for (i = 0; i < items; ++i) 2787 for (i = 0; i < items; ++i)
… …
2061 } 2789 }
2062 else 2790 else
2063 slf_argc = 0; 2791 slf_argc = 0;
2064 2792
2065 PL_op->op_ppaddr = pp_slf; 2793 PL_op->op_ppaddr = pp_slf;
2066 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ 2794 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2067 2795
2068 PL_op = (OP *)&slf_restore; 2796 PL_op = (OP *)&slf_restore;
2797}
2798
2799/*****************************************************************************/
2800/* dynamic wind */
2801
2802static void
2803on_enterleave_call (pTHX_ SV *cb)
2804{
2805 dSP;
2806
2807 PUSHSTACK;
2808
2809 PUSHMARK (SP);
2810 PUTBACK;
2811 call_sv (cb, G_VOID | G_DISCARD);
2812 SPAGAIN;
2813
2814 POPSTACK;
2815}
2816
2817static SV *
2818coro_avp_pop_and_free (pTHX_ AV **avp)
2819{
2820 AV *av = *avp;
2821 SV *res = av_pop (av);
2822
2823 if (AvFILLp (av) < 0)
2824 {
2825 *avp = 0;
2826 SvREFCNT_dec (av);
2827 }
2828
2829 return res;
2830}
2831
2832static void
2833coro_pop_on_enter (pTHX_ void *coro)
2834{
2835 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2836 SvREFCNT_dec (cb);
2837}
2838
2839static void
2840coro_pop_on_leave (pTHX_ void *coro)
2841{
2842 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2843 on_enterleave_call (aTHX_ sv_2mortal (cb));
2844}
2845
2846static void
2847enterleave_hook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, void *arg)
2848{
2849 if (!hook)
2850 return;
2851
2852 if (!*avp)
2853 {
2854 *avp = newAV ();
2855 AvREAL_off (*avp);
2856 }
2857
2858 av_push (*avp, (SV *)hook);
2859 av_push (*avp, (SV *)arg);
2860}
2861
2862static void
2863enterleave_unhook_xs (pTHX_ struct coro *coro, AV **avp, coro_enterleave_hook hook, int execute)
2864{
2865 AV *av = *avp;
2866 int i;
2867
2868 if (!av)
2869 return;
2870
2871 for (i = AvFILLp (av) - 1; i >= 0; i -= 2)
2872 if (AvARRAY (av)[i] == (SV *)hook)
2873 {
2874 if (execute)
2875 hook ((void *)AvARRAY (av)[i + 1]);
2876
2877 memmove (AvARRAY (av) + i, AvARRAY (av) + i + 2, AvFILLp (av) - i - 1);
2878 av_pop (av);
2879 av_pop (av);
2880 break;
2881 }
2882
2883 if (AvFILLp (av) >= 0)
2884 {
2885 *avp = 0;
2886 SvREFCNT_dec_NN (av);
2887 }
2888}
2889
2890static void
2891api_enterleave_hook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2892{
2893 struct coro *coro = SvSTATE (coro_sv);
2894
2895 if (SvSTATE_current == coro)
2896 if (enter)
2897 enter (aTHX enter_arg);
2898
2899 enterleave_hook_xs (aTHX_ coro, &coro->on_enter_xs, enter, enter_arg);
2900 enterleave_hook_xs (aTHX_ coro, &coro->on_leave_xs, leave, leave_arg);
2901}
2902
2903static void
2904api_enterleave_unhook (pTHX_ SV *coro_sv, coro_enterleave_hook enter, coro_enterleave_hook leave)
2905{
2906 struct coro *coro = SvSTATE (coro_sv);
2907
2908 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2909 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, SvSTATE_current == coro);
2910}
2911
2912static void
2913savedestructor_unhook_enter (pTHX_ coro_enterleave_hook enter)
2914{
2915 struct coro *coro = SvSTATE_current;
2916
2917 enterleave_unhook_xs (aTHX_ coro, &coro->on_enter_xs, enter, 0);
2918}
2919
2920static void
2921savedestructor_unhook_leave (pTHX_ coro_enterleave_hook leave)
2922{
2923 struct coro *coro = SvSTATE_current;
2924
2925 enterleave_unhook_xs (aTHX_ coro, &coro->on_leave_xs, leave, 1);
2926}
2927
2928static void
2929api_enterleave_scope_hook (pTHX_ coro_enterleave_hook enter, void *enter_arg, coro_enterleave_hook leave, void *leave_arg)
2930{
2931 api_enterleave_hook (aTHX_ coro_current, enter, enter_arg, leave, leave_arg);
2932
2933 /* this ought to be much cheaper than malloc + a single destructor call */
2934 if (enter) SAVEDESTRUCTOR_X (savedestructor_unhook_enter, enter);
2935 if (leave) SAVEDESTRUCTOR_X (savedestructor_unhook_leave, leave);
2069} 2936}
2070 2937
2071/*****************************************************************************/ 2938/*****************************************************************************/
2072/* PerlIO::cede */ 2939/* PerlIO::cede */
2073 2940
… …
2075{ 2942{
2076 PerlIOBuf base; 2943 PerlIOBuf base;
2077 NV next, every; 2944 NV next, every;
2078} PerlIOCede; 2945} PerlIOCede;
2079 2946
2080static IV 2947static IV ecb_cold
2081PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2948PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2082{ 2949{
2083 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2950 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2084 2951
2085 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2952 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2086 self->next = nvtime () + self->every; 2953 self->next = nvtime () + self->every;
2087 2954
2088 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2955 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2089} 2956}
2090 2957
2091static SV * 2958static SV * ecb_cold
2092PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2959PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2093{ 2960{
2094 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2961 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2095 2962
2096 return newSVnv (self->every); 2963 return newSVnv (self->every);
… …
2147/* Coro::Semaphore & Coro::Signal */ 3014/* Coro::Semaphore & Coro::Signal */
2148 3015
2149static SV * 3016static SV *
2150coro_waitarray_new (pTHX_ int count) 3017coro_waitarray_new (pTHX_ int count)
2151{ 3018{
2152 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 3019 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2153 AV *av = newAV (); 3020 AV *av = newAV ();
2154 SV **ary; 3021 SV **ary;
2155 3022
2156 /* unfortunately, building manually saves memory */ 3023 /* unfortunately, building manually saves memory */
2157 Newx (ary, 2, SV *); 3024 Newx (ary, 2, SV *);
2158 AvALLOC (av) = ary; 3025 AvALLOC (av) = ary;
3026#if PERL_VERSION_ATLEAST (5,10,0)
2159 /*AvARRAY (av) = ary;*/ 3027 AvARRAY (av) = ary;
3028#else
2160 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ 3029 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
3030 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
3031 SvPVX ((SV *)av) = (char *)ary;
3032#endif
2161 AvMAX (av) = 1; 3033 AvMAX (av) = 1;
2162 AvFILLp (av) = 0; 3034 AvFILLp (av) = 0;
2163 ary [0] = newSViv (count); 3035 ary [0] = newSViv (count);
2164 3036
2165 return newRV_noinc ((SV *)av); 3037 return newRV_noinc ((SV *)av);
… …
2198 XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); 3070 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2199 PUTBACK; 3071 PUTBACK;
2200 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); 3072 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2201 } 3073 }
2202 3074
2203 SvREFCNT_dec (cb); 3075 SvREFCNT_dec_NN (cb);
2204 } 3076 }
2205} 3077}
2206 3078
2207static void 3079static void
2208coro_semaphore_on_destroy (pTHX_ struct coro *coro) 3080coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2209{ 3081{
2210 /* call $sem->adjust (0) to possibly wake up some other waiters */ 3082 /* call $sem->adjust (0) to possibly wake up some other waiters */
2211 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 3083 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2212} 3084}
2213 3085
2214static int 3086static int
2215slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) 3087slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2216{ 3088{
2217 AV *av = (AV *)frame->data; 3089 AV *av = (AV *)frame->data;
2218 SV *count_sv = AvARRAY (av)[0]; 3090 SV *count_sv = AvARRAY (av)[0];
3091 SV *coro_hv = SvRV (coro_current);
3092
3093 frame->destroy = 0;
2219 3094
2220 /* if we are about to throw, don't actually acquire the lock, just throw */ 3095 /* if we are about to throw, don't actually acquire the lock, just throw */
2221 if (CORO_THROW) 3096 if (ecb_expect_false (CORO_THROW))
3097 {
3098 /* we still might be responsible for the semaphore, so wake up others */
3099 coro_semaphore_adjust (aTHX_ av, 0);
3100
2222 return 0; 3101 return 0;
3102 }
2223 else if (SvIVX (count_sv) > 0) 3103 else if (SvIVX (count_sv) > 0)
2224 { 3104 {
2225 SvSTATE_current->on_destroy = 0;
2226
2227 if (acquire) 3105 if (acquire)
2228 SvIVX (count_sv) = SvIVX (count_sv) - 1; 3106 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2229 else 3107 else
2230 coro_semaphore_adjust (aTHX_ av, 0); 3108 coro_semaphore_adjust (aTHX_ av, 0);
2231 3109
… …
2235 { 3113 {
2236 int i; 3114 int i;
2237 /* if we were woken up but can't down, we look through the whole */ 3115 /* if we were woken up but can't down, we look through the whole */
2238 /* waiters list and only add us if we aren't in there already */ 3116 /* waiters list and only add us if we aren't in there already */
2239 /* this avoids some degenerate memory usage cases */ 3117 /* this avoids some degenerate memory usage cases */
2240 3118 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2241 for (i = 1; i <= AvFILLp (av); ++i)
2242 if (AvARRAY (av)[i] == SvRV (coro_current)) 3119 if (AvARRAY (av)[i] == coro_hv)
2243 return 1; 3120 return 1;
2244 3121
2245 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3122 av_push (av, SvREFCNT_inc (coro_hv));
2246 return 1; 3123 return 1;
2247 } 3124 }
2248} 3125}
2249 3126
2250static int 3127static int
… …
2273 { 3150 {
2274 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 3151 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2275 3152
2276 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3153 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2277 frame->prepare = prepare_schedule; 3154 frame->prepare = prepare_schedule;
2278
2279 /* to avoid race conditions when a woken-up coro gets terminated */ 3155 /* to avoid race conditions when a woken-up coro gets terminated */
2280 /* we arrange for a temporary on_destroy that calls adjust (0) */ 3156 /* we arrange for a temporary on_destroy that calls adjust (0) */
2281 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 3157 frame->destroy = coro_semaphore_destroy;
2282 } 3158 }
2283} 3159}
2284 3160
2285static void 3161static void
2286slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3162slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
… …
2294{ 3170{
2295 if (items >= 2) 3171 if (items >= 2)
2296 { 3172 {
2297 /* callback form */ 3173 /* callback form */
2298 AV *av = (AV *)SvRV (arg [0]); 3174 AV *av = (AV *)SvRV (arg [0]);
2299 CV *cb_cv = coro_sv_2cv (arg [1]); 3175 SV *cb_cv = s_get_cv_croak (arg [1]);
2300 3176
2301 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); 3177 av_push (av, SvREFCNT_inc_NN (cb_cv));
2302 3178
2303 if (SvIVX (AvARRAY (av)[0]) > 0) 3179 if (SvIVX (AvARRAY (av)[0]) > 0)
2304 coro_semaphore_adjust (aTHX_ av, 0); 3180 coro_semaphore_adjust (aTHX_ av, 0);
2305 3181
2306 frame->prepare = prepare_nop; 3182 frame->prepare = prepare_nop;
… …
2330 AvARRAY (av)[0] = AvARRAY (av)[1]; 3206 AvARRAY (av)[0] = AvARRAY (av)[1];
2331 AvARRAY (av)[1] = cb; 3207 AvARRAY (av)[1] = cb;
2332 3208
2333 cb = av_shift (av); 3209 cb = av_shift (av);
2334 3210
3211 if (SvTYPE (cb) == SVt_PVCV)
3212 {
3213 dSP;
3214 PUSHMARK (SP);
3215 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3216 PUTBACK;
3217 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3218 }
3219 else
3220 {
2335 api_ready (aTHX_ cb); 3221 api_ready (aTHX_ cb);
2336 sv_setiv (cb, 0); /* signal waiter */ 3222 sv_setiv (cb, 0); /* signal waiter */
3223 }
3224
2337 SvREFCNT_dec (cb); 3225 SvREFCNT_dec_NN (cb);
2338 3226
2339 --count; 3227 --count;
2340 } 3228 }
2341} 3229}
2342 3230
… …
2350static void 3238static void
2351slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 3239slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2352{ 3240{
2353 AV *av = (AV *)SvRV (arg [0]); 3241 AV *av = (AV *)SvRV (arg [0]);
2354 3242
3243 if (items >= 2)
3244 {
3245 SV *cb_cv = s_get_cv_croak (arg [1]);
3246 av_push (av, SvREFCNT_inc_NN (cb_cv));
3247
2355 if (SvIVX (AvARRAY (av)[0])) 3248 if (SvIVX (AvARRAY (av)[0]))
3249 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3250
3251 frame->prepare = prepare_nop;
3252 frame->check = slf_check_nop;
3253 }
3254 else if (SvIVX (AvARRAY (av)[0]))
2356 { 3255 {
2357 SvIVX (AvARRAY (av)[0]) = 0; 3256 SvIVX (AvARRAY (av)[0]) = 0;
2358 frame->prepare = prepare_nop; 3257 frame->prepare = prepare_nop;
2359 frame->check = slf_check_nop; 3258 frame->check = slf_check_nop;
2360 } 3259 }
2361 else 3260 else
2362 { 3261 {
2363 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ 3262 SV *waiter = newSVsv (coro_current); /* owned by signal av */
2364 3263
2365 av_push (av, waiter); 3264 av_push (av, waiter);
2366 3265
2367 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ 3266 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2368 frame->prepare = prepare_schedule; 3267 frame->prepare = prepare_schedule;
… …
2386 3285
2387static void 3286static void
2388coro_aio_callback (pTHX_ CV *cv) 3287coro_aio_callback (pTHX_ CV *cv)
2389{ 3288{
2390 dXSARGS; 3289 dXSARGS;
2391 AV *state = (AV *)GENSUB_ARG; 3290 AV *state = (AV *)S_GENSUB_ARG;
2392 SV *coro = av_pop (state); 3291 SV *coro = av_pop (state);
2393 SV *data_sv = newSV (sizeof (struct io_state)); 3292 SV *data_sv = newSV (sizeof (struct io_state));
2394 3293
2395 av_extend (state, items); 3294 av_extend (state, items - 1);
2396 3295
2397 sv_upgrade (data_sv, SVt_PV); 3296 sv_upgrade (data_sv, SVt_PV);
2398 SvCUR_set (data_sv, sizeof (struct io_state)); 3297 SvCUR_set (data_sv, sizeof (struct io_state));
2399 SvPOK_only (data_sv); 3298 SvPOK_only (data_sv);
2400 3299
… …
2416 } 3315 }
2417 3316
2418 av_push (state, data_sv); 3317 av_push (state, data_sv);
2419 3318
2420 api_ready (aTHX_ coro); 3319 api_ready (aTHX_ coro);
2421 SvREFCNT_dec (coro); 3320 SvREFCNT_dec_NN (coro);
2422 SvREFCNT_dec ((AV *)state); 3321 SvREFCNT_dec_NN ((AV *)state);
2423} 3322}
2424 3323
2425static int 3324static int
2426slf_check_aio_req (pTHX_ struct CoroSLF *frame) 3325slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2427{ 3326{
… …
2432 /* it quickly returns */ 3331 /* it quickly returns */
2433 if (CORO_THROW) 3332 if (CORO_THROW)
2434 return 0; 3333 return 0;
2435 3334
2436 /* one element that is an RV? repeat! */ 3335 /* one element that is an RV? repeat! */
2437 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) 3336 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
2438 return 1; 3337 return 1;
2439 3338
2440 /* restore status */ 3339 /* restore status */
2441 { 3340 {
2442 SV *data_sv = av_pop (state); 3341 SV *data_sv = av_pop (state);
… …
2445 errno = data->errorno; 3344 errno = data->errorno;
2446 PL_laststype = data->laststype; 3345 PL_laststype = data->laststype;
2447 PL_laststatval = data->laststatval; 3346 PL_laststatval = data->laststatval;
2448 PL_statcache = data->statcache; 3347 PL_statcache = data->statcache;
2449 3348
2450 SvREFCNT_dec (data_sv); 3349 SvREFCNT_dec_NN (data_sv);
2451 } 3350 }
2452 3351
2453 /* push result values */ 3352 /* push result values */
2454 { 3353 {
2455 dSP; 3354 dSP;
… …
2481 dSP; 3380 dSP;
2482 3381
2483 static SV *prio_cv; 3382 static SV *prio_cv;
2484 static SV *prio_sv; 3383 static SV *prio_sv;
2485 3384
2486 if (expect_false (!prio_cv)) 3385 if (ecb_expect_false (!prio_cv))
2487 { 3386 {
2488 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); 3387 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2489 prio_sv = newSViv (0); 3388 prio_sv = newSViv (0);
2490 } 3389 }
2491 3390
… …
2510 3409
2511 for (i = 0; i < items; ++i) 3410 for (i = 0; i < items; ++i)
2512 PUSHs (arg [i]); 3411 PUSHs (arg [i]);
2513 3412
2514 /* now push the callback closure */ 3413 /* now push the callback closure */
2515 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); 3414 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2516 3415
2517 /* now call the AIO function - we assume our request is uncancelable */ 3416 /* now call the AIO function - we assume our request is uncancelable */
2518 PUTBACK; 3417 PUTBACK;
2519 call_sv ((SV *)req, G_VOID | G_DISCARD); 3418 call_sv ((SV *)req, G_VOID | G_DISCARD);
2520 } 3419 }
2521 3420
2522 /* now that the requets is going, we loop toll we have a result */ 3421 /* now that the request is going, we loop till we have a result */
2523 frame->data = (void *)state; 3422 frame->data = (void *)state;
2524 frame->prepare = prepare_schedule; 3423 frame->prepare = prepare_schedule;
2525 frame->check = slf_check_aio_req; 3424 frame->check = slf_check_aio_req;
2526} 3425}
2527 3426
… …
2535 XSRETURN_EMPTY; 3434 XSRETURN_EMPTY;
2536} 3435}
2537 3436
2538/*****************************************************************************/ 3437/*****************************************************************************/
2539 3438
3439#if CORO_CLONE
3440# include "clone.c"
3441#endif
3442
3443/*****************************************************************************/
3444
3445static SV *
3446coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3447{
3448 SV *coro_sv;
3449 struct coro *coro;
3450 MAGIC *mg;
3451 HV *hv;
3452 SV *cb;
3453 int i;
3454
3455 if (argc > 0)
3456 {
3457 cb = s_get_cv_croak (argv [0]);
3458
3459 if (!is_coro)
3460 {
3461 if (CvISXSUB (cb))
3462 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3463
3464 if (!CvROOT (cb))
3465 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3466 }
3467 }
3468
3469 Newz (0, coro, 1, struct coro);
3470 coro->args = newAV ();
3471 coro->flags = CF_NEW;
3472
3473 if (coro_first) coro_first->prev = coro;
3474 coro->next = coro_first;
3475 coro_first = coro;
3476
3477 coro->hv = hv = newHV ();
3478 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3479 mg->mg_flags |= MGf_DUP;
3480 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3481
3482 if (argc > 0)
3483 {
3484 av_extend (coro->args, argc + is_coro - 1);
3485
3486 if (is_coro)
3487 {
3488 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3489 cb = (SV *)cv_coro_run;
3490 }
3491
3492 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3493
3494 for (i = 1; i < argc; i++)
3495 av_push (coro->args, newSVsv (argv [i]));
3496 }
3497
3498 return coro_sv;
3499}
3500
3501#ifndef __cplusplus
3502ecb_cold XS(boot_Coro__State);
3503#endif
3504
3505#if CORO_JIT
3506
3507static void ecb_noinline ecb_cold
3508pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3509{
3510 dSP;
3511 AV *av = newAV ();
3512
3513 av_store (av, 3, newSVuv (d));
3514 av_store (av, 2, newSVuv (c));
3515 av_store (av, 1, newSVuv (b));
3516 av_store (av, 0, newSVuv (a));
3517
3518 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3519
3520 PUTBACK;
3521}
3522
3523static void ecb_noinline ecb_cold
3524jit_init (pTHX)
3525{
3526 dSP;
3527 SV *load, *save;
3528 char *map_base;
3529 char *load_ptr, *save_ptr;
3530 STRLEN load_len, save_len, map_len;
3531 int count;
3532
3533 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3534
3535 PUSHMARK (SP);
3536 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3537 #include "state.h"
3538 count = call_pv ("Coro::State::_jit", G_ARRAY);
3539 SPAGAIN;
3540
3541 save = POPs; save_ptr = SvPVbyte (save, save_len);
3542 load = POPs; load_ptr = SvPVbyte (load, load_len);
3543
3544 map_len = load_len + save_len + 16;
3545
3546 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3547
3548 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3549
3550 load_perl_slots = (load_save_perl_slots_type)map_base;
3551 memcpy (map_base, load_ptr, load_len);
3552
3553 map_base += (load_len + 15) & ~15;
3554
3555 save_perl_slots = (load_save_perl_slots_type)map_base;
3556 memcpy (map_base, save_ptr, save_len);
3557
3558 /* we are good citizens and try to make the page read-only, so the evil evil */
3559 /* hackers might have it a bit more difficult */
3560 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3561
3562 PUTBACK;
3563 eval_pv ("undef &Coro::State::_jit", 1);
3564}
3565
3566#endif
3567
2540MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3568MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2541 3569
2542PROTOTYPES: DISABLE 3570PROTOTYPES: DISABLE
2543 3571
2544BOOT: 3572BOOT:
2545{ 3573{
3574#define VARx(name,expr,type) if (sizeof (type) < sizeof (expr)) croak ("FATAL: Coro thread context slot '" # name "' too small for this version of perl.");
3575#include "state.h"
2546#ifdef USE_ITHREADS 3576#ifdef USE_ITHREADS
2547# if CORO_PTHREAD 3577# if CORO_PTHREAD
2548 coro_thx = PERL_GET_CONTEXT; 3578 coro_thx = PERL_GET_CONTEXT;
2549# endif 3579# endif
2550#endif 3580#endif
2551 BOOT_PAGESIZE; 3581 /* perl defines these to check for existance first, but why it doesn't */
3582 /* just create them one at init time is not clear to me, except for */
3583 /* programs trying to delete them, but... */
3584 /* anyway, we declare this as invalid and make sure they are initialised here */
3585 DEFSV;
3586 ERRSV;
3587
3588 cctx_current = cctx_new_empty ();
2552 3589
2553 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3590 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2554 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3591 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2555 3592
2556 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3593 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2576 3613
2577 { 3614 {
2578 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3615 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2579 3616
2580 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3617 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2581 hv_store_ent (PL_custom_op_names, slf, 3618 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2582 newSVpv ("coro_slf", 0), 0);
2583 3619
2584 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3620 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2585 hv_store_ent (PL_custom_op_descs, slf, 3621 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2586 newSVpv ("coro schedule like function", 0), 0);
2587 } 3622 }
2588 3623
2589 coroapi.ver = CORO_API_VERSION; 3624 coroapi.ver = CORO_API_VERSION;
2590 coroapi.rev = CORO_API_REVISION; 3625 coroapi.rev = CORO_API_REVISION;
2591 3626
… …
2596 coroapi.prepare_nop = prepare_nop; 3631 coroapi.prepare_nop = prepare_nop;
2597 coroapi.prepare_schedule = prepare_schedule; 3632 coroapi.prepare_schedule = prepare_schedule;
2598 coroapi.prepare_cede = prepare_cede; 3633 coroapi.prepare_cede = prepare_cede;
2599 coroapi.prepare_cede_notself = prepare_cede_notself; 3634 coroapi.prepare_cede_notself = prepare_cede_notself;
2600 3635
2601 { 3636 time_init (aTHX);
2602 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2603 3637
2604 if (!svp) croak ("Time::HiRes is required");
2605 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2606
2607 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2608 }
2609
2610 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3638 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3639#if CORO_JIT
3640 PUTBACK;
3641 jit_init (aTHX);
3642 SPAGAIN;
3643#endif
2611} 3644}
2612 3645
2613SV * 3646SV *
2614new (char *klass, ...) 3647new (SV *klass, ...)
3648 ALIAS:
3649 Coro::new = 1
2615 CODE: 3650 CODE:
2616{ 3651 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2617 struct coro *coro; 3652 OUTPUT:
2618 MAGIC *mg;
2619 HV *hv;
2620 CV *cb;
2621 int i;
2622
2623 if (items > 1)
2624 {
2625 cb = coro_sv_2cv (ST (1));
2626
2627 if (CvISXSUB (cb))
2628 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2629
2630 if (!CvROOT (cb))
2631 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2632 }
2633
2634 Newz (0, coro, 1, struct coro);
2635 coro->args = newAV ();
2636 coro->flags = CF_NEW;
2637
2638 if (coro_first) coro_first->prev = coro;
2639 coro->next = coro_first;
2640 coro_first = coro;
2641
2642 coro->hv = hv = newHV ();
2643 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2644 mg->mg_flags |= MGf_DUP;
2645 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2646
2647 if (items > 1)
2648 {
2649 coro->startcv = SvREFCNT_inc_NN (cb);
2650
2651 av_extend (coro->args, items - 1);
2652 av_push (coro->args, SvREFCNT_inc (cb));
2653 for (i = 2; i < items; i++)
2654 av_push (coro->args, newSVsv (ST (i)));
2655 }
2656}
2657 OUTPUT:
2658 RETVAL 3653 RETVAL
2659 3654
2660void 3655void
2661transfer (...) 3656transfer (...)
2662 PROTOTYPE: $$ 3657 PROTOTYPE: $$
2663 CODE: 3658 CODE:
2664 CORO_EXECUTE_SLF_XS (slf_init_transfer); 3659 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2665 3660
2666bool 3661SV *
2667_destroy (SV *coro_sv) 3662clone (Coro::State coro)
2668 CODE: 3663 CODE:
2669 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3664{
3665#if CORO_CLONE
3666 struct coro *ncoro = coro_clone (aTHX_ coro);
3667 MAGIC *mg;
3668 /* TODO: too much duplication */
3669 ncoro->hv = newHV ();
3670 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3671 mg->mg_flags |= MGf_DUP;
3672 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3673#else
3674 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3675#endif
3676}
2670 OUTPUT: 3677 OUTPUT:
2671 RETVAL 3678 RETVAL
2672
2673void
2674_exit (int code)
2675 PROTOTYPE: $
2676 CODE:
2677 _exit (code);
2678 3679
2679int 3680int
2680cctx_stacksize (int new_stacksize = 0) 3681cctx_stacksize (int new_stacksize = 0)
2681 PROTOTYPE: ;$ 3682 PROTOTYPE: ;$
2682 CODE: 3683 CODE:
… …
2718void 3719void
2719list () 3720list ()
2720 PROTOTYPE: 3721 PROTOTYPE:
2721 PPCODE: 3722 PPCODE:
2722{ 3723{
2723 struct coro *coro; 3724 struct coro *coro;
2724 for (coro = coro_first; coro; coro = coro->next) 3725 for (coro = coro_first; coro; coro = coro->next)
2725 if (coro->hv) 3726 if (coro->hv)
2726 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3727 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2727} 3728}
2728 3729
… …
2732 eval = 1 3733 eval = 1
2733 CODE: 3734 CODE:
2734{ 3735{
2735 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3736 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2736 { 3737 {
2737 struct coro temp; 3738 struct coro *current = SvSTATE_current;
3739 struct CoroSLF slf_save;
2738 3740
2739 if (!(coro->flags & CF_RUNNING)) 3741 if (current != coro)
2740 { 3742 {
2741 PUTBACK; 3743 PUTBACK;
2742 save_perl (aTHX_ &temp); 3744 save_perl (aTHX_ current);
2743 load_perl (aTHX_ coro); 3745 load_perl (aTHX_ coro);
3746 /* the coro is most likely in an active SLF call.
3747 * while not strictly required (the code we execute is
3748 * not allowed to call any SLF functions), it's cleaner
3749 * to reinitialise the slf_frame and restore it later.
3750 * This might one day allow us to actually do SLF calls
3751 * from code executed here.
3752 */
3753 slf_save = slf_frame;
3754 slf_frame.prepare = 0;
3755 SPAGAIN;
2744 } 3756 }
2745 3757
2746 {
2747 dSP;
2748 ENTER;
2749 SAVETMPS;
2750 PUTBACK;
2751 PUSHSTACK; 3758 PUSHSTACK;
3759
2752 PUSHMARK (SP); 3760 PUSHMARK (SP);
3761 PUTBACK;
2753 3762
2754 if (ix) 3763 if (ix)
2755 eval_sv (coderef, 0); 3764 eval_sv (coderef, 0);
2756 else 3765 else
2757 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3766 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2758 3767
2759 POPSTACK; 3768 POPSTACK;
2760 SPAGAIN; 3769 SPAGAIN;
2761 FREETMPS;
2762 LEAVE;
2763 PUTBACK;
2764 }
2765 3770
2766 if (!(coro->flags & CF_RUNNING)) 3771 if (current != coro)
2767 { 3772 {
3773 PUTBACK;
3774 slf_frame = slf_save;
2768 save_perl (aTHX_ coro); 3775 save_perl (aTHX_ coro);
2769 load_perl (aTHX_ &temp); 3776 load_perl (aTHX_ current);
2770 SPAGAIN; 3777 SPAGAIN;
2771 } 3778 }
2772 } 3779 }
2773} 3780}
2774 3781
… …
2777 PROTOTYPE: $ 3784 PROTOTYPE: $
2778 ALIAS: 3785 ALIAS:
2779 is_ready = CF_READY 3786 is_ready = CF_READY
2780 is_running = CF_RUNNING 3787 is_running = CF_RUNNING
2781 is_new = CF_NEW 3788 is_new = CF_NEW
2782 is_destroyed = CF_DESTROYED 3789 is_destroyed = CF_ZOMBIE
3790 is_zombie = CF_ZOMBIE
3791 is_suspended = CF_SUSPENDED
2783 CODE: 3792 CODE:
2784 RETVAL = boolSV (coro->flags & ix); 3793 RETVAL = boolSV (coro->flags & ix);
2785 OUTPUT: 3794 OUTPUT:
2786 RETVAL 3795 RETVAL
2787 3796
2788void 3797void
2789throw (Coro::State self, SV *throw = &PL_sv_undef) 3798throw (SV *self, SV *exception = &PL_sv_undef)
2790 PROTOTYPE: $;$ 3799 PROTOTYPE: $;$
2791 CODE: 3800 CODE:
2792{ 3801{
3802 struct coro *coro = SvSTATE (self);
2793 struct coro *current = SvSTATE_current; 3803 struct coro *current = SvSTATE_current;
2794 SV **throwp = self == current ? &CORO_THROW : &self->except; 3804 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2795 SvREFCNT_dec (*throwp); 3805 SvREFCNT_dec (*exceptionp);
2796 *throwp = SvOK (throw) ? newSVsv (throw) : 0; 3806 SvGETMAGIC (exception);
3807 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3808
3809 api_ready (aTHX_ self);
2797} 3810}
2798 3811
2799void 3812void
2800api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3813api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2801 PROTOTYPE: $;$ 3814 PROTOTYPE: $;$
… …
2803 3816
2804SV * 3817SV *
2805has_cctx (Coro::State coro) 3818has_cctx (Coro::State coro)
2806 PROTOTYPE: $ 3819 PROTOTYPE: $
2807 CODE: 3820 CODE:
2808 RETVAL = boolSV (!!coro->cctx); 3821 /* maybe manage the running flag differently */
3822 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2809 OUTPUT: 3823 OUTPUT:
2810 RETVAL 3824 RETVAL
2811 3825
2812int 3826int
2813is_traced (Coro::State coro) 3827is_traced (Coro::State coro)
… …
2833 3847
2834void 3848void
2835force_cctx () 3849force_cctx ()
2836 PROTOTYPE: 3850 PROTOTYPE:
2837 CODE: 3851 CODE:
2838 SvSTATE_current->cctx->idle_sp = 0; 3852 cctx_current->idle_sp = 0;
2839 3853
2840void 3854void
2841swap_defsv (Coro::State self) 3855swap_defsv (Coro::State self)
2842 PROTOTYPE: $ 3856 PROTOTYPE: $
2843 ALIAS: 3857 ALIAS:
… …
2851 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3865 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2852 3866
2853 SV *tmp = *src; *src = *dst; *dst = tmp; 3867 SV *tmp = *src; *src = *dst; *dst = tmp;
2854 } 3868 }
2855 3869
3870void
3871cancel (Coro::State self)
3872 CODE:
3873 coro_state_destroy (aTHX_ self);
3874
3875SV *
3876enable_times (int enabled = enable_times)
3877 CODE:
3878{
3879 RETVAL = boolSV (enable_times);
3880
3881 if (enabled != enable_times)
3882 {
3883 enable_times = enabled;
3884
3885 coro_times_update ();
3886 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3887 }
3888}
3889 OUTPUT:
3890 RETVAL
3891
3892void
3893times (Coro::State self)
3894 PPCODE:
3895{
3896 struct coro *current = SvSTATE (coro_current);
3897
3898 if (ecb_expect_false (current == self))
3899 {
3900 coro_times_update ();
3901 coro_times_add (SvSTATE (coro_current));
3902 }
3903
3904 EXTEND (SP, 2);
3905 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3906 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3907
3908 if (ecb_expect_false (current == self))
3909 coro_times_sub (SvSTATE (coro_current));
3910}
3911
3912void
3913swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3914 CODE:
3915{
3916 struct coro *current = SvSTATE_current;
3917
3918 if (current == coro)
3919 SWAP_SVS (current);
3920
3921 if (!coro->swap_sv)
3922 coro->swap_sv = newAV ();
3923
3924 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3925 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3926
3927 if (current == coro)
3928 SWAP_SVS (current);
3929}
3930
2856 3931
2857MODULE = Coro::State PACKAGE = Coro 3932MODULE = Coro::State PACKAGE = Coro
2858 3933
2859BOOT: 3934BOOT:
2860{ 3935{
2861 int i;
2862
2863 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2864 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3936 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2865 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3937 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2866 3938 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2867 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3939 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2868 SvREADONLY_on (coro_current); 3940 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3941 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3942 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3943 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3944
3945 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3946 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3947 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3948 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2869 3949
2870 coro_stash = gv_stashpv ("Coro", TRUE); 3950 coro_stash = gv_stashpv ("Coro", TRUE);
2871 3951
2872 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3952 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2873 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3953 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2874 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3954 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2875 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3955 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2876 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3956 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2877 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3957 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2878
2879 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2880 coro_ready[i] = newAV ();
2881 3958
2882 { 3959 {
2883 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3960 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2884 3961
2885 coroapi.schedule = api_schedule; 3962 coroapi.schedule = api_schedule;
3963 coroapi.schedule_to = api_schedule_to;
2886 coroapi.cede = api_cede; 3964 coroapi.cede = api_cede;
2887 coroapi.cede_notself = api_cede_notself; 3965 coroapi.cede_notself = api_cede_notself;
2888 coroapi.ready = api_ready; 3966 coroapi.ready = api_ready;
2889 coroapi.is_ready = api_is_ready; 3967 coroapi.is_ready = api_is_ready;
2890 coroapi.nready = coro_nready; 3968 coroapi.nready = coro_nready;
2891 coroapi.current = coro_current; 3969 coroapi.current = coro_current;
2892 3970
3971 coroapi.enterleave_hook = api_enterleave_hook;
3972 coroapi.enterleave_unhook = api_enterleave_unhook;
3973 coroapi.enterleave_scope_hook = api_enterleave_scope_hook;
3974
2893 /*GCoroAPI = &coroapi;*/ 3975 /*GCoroAPI = &coroapi;*/
2894 sv_setiv (sv, (IV)&coroapi); 3976 sv_setiv (sv, (IV)&coroapi);
2895 SvREADONLY_on (sv); 3977 SvREADONLY_on (sv);
2896 } 3978 }
2897} 3979}
2898 3980
3981SV *
3982async (...)
3983 PROTOTYPE: &@
3984 CODE:
3985 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3986 api_ready (aTHX_ RETVAL);
3987 OUTPUT:
3988 RETVAL
3989
3990void
3991_destroy (Coro::State coro)
3992 CODE:
3993 /* used by the manager thread */
3994 coro_state_destroy (aTHX_ coro);
3995
3996void
3997on_destroy (Coro::State coro, SV *cb)
3998 CODE:
3999 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
4000
4001void
4002join (...)
4003 CODE:
4004 CORO_EXECUTE_SLF_XS (slf_init_join);
4005
4006void
4007terminate (...)
4008 CODE:
4009 CORO_EXECUTE_SLF_XS (slf_init_terminate);
4010
4011void
4012cancel (...)
4013 CODE:
4014 CORO_EXECUTE_SLF_XS (slf_init_cancel);
4015
4016int
4017safe_cancel (Coro::State self, ...)
4018 C_ARGS: aTHX_ self, &ST (1), items - 1
4019
2899void 4020void
2900schedule (...) 4021schedule (...)
2901 CODE: 4022 CODE:
2902 CORO_EXECUTE_SLF_XS (slf_init_schedule); 4023 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2903 4024
2904void 4025void
4026schedule_to (...)
4027 CODE:
4028 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
4029
4030void
4031cede_to (...)
4032 CODE:
4033 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
4034
4035void
2905cede (...) 4036cede (...)
2906 CODE: 4037 CODE:
2907 CORO_EXECUTE_SLF_XS (slf_init_cede); 4038 CORO_EXECUTE_SLF_XS (slf_init_cede);
2908 4039
2909void 4040void
… …
2913 4044
2914void 4045void
2915_set_current (SV *current) 4046_set_current (SV *current)
2916 PROTOTYPE: $ 4047 PROTOTYPE: $
2917 CODE: 4048 CODE:
2918 SvREFCNT_dec (SvRV (coro_current)); 4049 SvREFCNT_dec_NN (SvRV (coro_current));
2919 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); 4050 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
2920 4051
2921void 4052void
2922_set_readyhook (SV *hook) 4053_set_readyhook (SV *hook)
2923 PROTOTYPE: $ 4054 PROTOTYPE: $
2924 CODE: 4055 CODE:
2925 SvREFCNT_dec (coro_readyhook); 4056 SvREFCNT_dec (coro_readyhook);
4057 SvGETMAGIC (hook);
4058 if (SvOK (hook))
4059 {
2926 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 4060 coro_readyhook = newSVsv (hook);
4061 CORO_READYHOOK = invoke_sv_ready_hook_helper;
4062 }
4063 else
4064 {
4065 coro_readyhook = 0;
4066 CORO_READYHOOK = 0;
4067 }
2927 4068
2928int 4069int
2929prio (Coro::State coro, int newprio = 0) 4070prio (Coro::State coro, int newprio = 0)
2930 PROTOTYPE: $;$ 4071 PROTOTYPE: $;$
2931 ALIAS: 4072 ALIAS:
… …
2937 if (items > 1) 4078 if (items > 1)
2938 { 4079 {
2939 if (ix) 4080 if (ix)
2940 newprio = coro->prio - newprio; 4081 newprio = coro->prio - newprio;
2941 4082
2942 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 4083 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2943 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 4084 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2944 4085
2945 coro->prio = newprio; 4086 coro->prio = newprio;
2946 } 4087 }
2947} 4088}
2948 OUTPUT: 4089 OUTPUT:
… …
2962 CODE: 4103 CODE:
2963 RETVAL = coro_nready; 4104 RETVAL = coro_nready;
2964 OUTPUT: 4105 OUTPUT:
2965 RETVAL 4106 RETVAL
2966 4107
2967# for async_pool speedup
2968void 4108void
2969_pool_1 (SV *cb) 4109suspend (Coro::State self)
4110 PROTOTYPE: $
2970 CODE: 4111 CODE:
2971{ 4112 self->flags |= CF_SUSPENDED;
2972 HV *hv = (HV *)SvRV (coro_current);
2973 struct coro *coro = SvSTATE_hv ((SV *)hv);
2974 AV *defav = GvAV (PL_defgv);
2975 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2976 AV *invoke_av;
2977 int i, len;
2978 4113
2979 if (!invoke) 4114void
4115resume (Coro::State self)
4116 PROTOTYPE: $
4117 CODE:
4118 self->flags &= ~CF_SUSPENDED;
4119
4120void
4121_pool_handler (...)
4122 CODE:
4123 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
4124
4125void
4126async_pool (SV *cv, ...)
4127 PROTOTYPE: &@
4128 PPCODE:
4129{
4130 HV *hv = (HV *)av_pop (av_async_pool);
4131 AV *av = newAV ();
4132 SV *cb = ST (0);
4133 int i;
4134
4135 av_extend (av, items - 2);
4136 for (i = 1; i < items; ++i)
4137 av_push (av, SvREFCNT_inc_NN (ST (i)));
4138
4139 if ((SV *)hv == &PL_sv_undef)
2980 { 4140 {
2981 SV *old = PL_diehook; 4141 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2982 PL_diehook = 0; 4142 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2983 SvREFCNT_dec (old); 4143 SvREFCNT_dec_NN (sv);
2984 croak ("\3async_pool terminate\2\n");
2985 } 4144 }
2986 4145
2987 SvREFCNT_dec (coro->saved_deffh);
2988 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2989
2990 hv_store (hv, "desc", sizeof ("desc") - 1,
2991 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2992
2993 invoke_av = (AV *)SvRV (invoke);
2994 len = av_len (invoke_av);
2995
2996 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2997
2998 if (len > 0)
2999 { 4146 {
3000 av_fill (defav, len - 1); 4147 struct coro *coro = SvSTATE_hv (hv);
3001 for (i = 0; i < len; ++i) 4148
3002 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 4149 assert (!coro->invoke_cb);
4150 assert (!coro->invoke_av);
4151 coro->invoke_cb = SvREFCNT_inc (cb);
4152 coro->invoke_av = av;
3003 } 4153 }
3004}
3005 4154
3006void 4155 api_ready (aTHX_ (SV *)hv);
3007_pool_2 (SV *cb)
3008 CODE:
3009{
3010 HV *hv = (HV *)SvRV (coro_current);
3011 struct coro *coro = SvSTATE_hv ((SV *)hv);
3012 4156
3013 sv_setsv (cb, &PL_sv_undef); 4157 if (GIMME_V != G_VOID)
3014 4158 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3015 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4159 else
3016 coro->saved_deffh = 0;
3017
3018 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
3019 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
3020 {
3021 SV *old = PL_diehook;
3022 PL_diehook = 0;
3023 SvREFCNT_dec (old); 4160 SvREFCNT_dec_NN (hv);
3024 croak ("\3async_pool terminate\2\n");
3025 }
3026
3027 av_clear (GvAV (PL_defgv));
3028 hv_store (hv, "desc", sizeof ("desc") - 1,
3029 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
3030
3031 coro->prio = 0;
3032
3033 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
3034 api_trace (aTHX_ coro_current, 0);
3035
3036 av_push (av_async_pool, newSVsv (coro_current));
3037} 4161}
3038 4162
3039SV * 4163SV *
3040rouse_cb () 4164rouse_cb ()
3041 PROTOTYPE: 4165 PROTOTYPE:
… …
3048rouse_wait (...) 4172rouse_wait (...)
3049 PROTOTYPE: ;$ 4173 PROTOTYPE: ;$
3050 PPCODE: 4174 PPCODE:
3051 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); 4175 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3052 4176
4177void
4178on_enter (SV *block)
4179 ALIAS:
4180 on_leave = 1
4181 PROTOTYPE: &
4182 CODE:
4183{
4184 struct coro *coro = SvSTATE_current;
4185 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4186
4187 block = s_get_cv_croak (block);
4188
4189 if (!*avp)
4190 *avp = newAV ();
4191
4192 av_push (*avp, SvREFCNT_inc (block));
4193
4194 if (!ix)
4195 on_enterleave_call (aTHX_ block);
4196
4197 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4198 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4199 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4200}
4201
3053 4202
3054MODULE = Coro::State PACKAGE = PerlIO::cede 4203MODULE = Coro::State PACKAGE = PerlIO::cede
3055 4204
3056BOOT: 4205BOOT:
3057 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4206 PerlIO_define_layer (aTHX_ &PerlIO_cede);
… …
3060MODULE = Coro::State PACKAGE = Coro::Semaphore 4209MODULE = Coro::State PACKAGE = Coro::Semaphore
3061 4210
3062SV * 4211SV *
3063new (SV *klass, SV *count = 0) 4212new (SV *klass, SV *count = 0)
3064 CODE: 4213 CODE:
4214{
4215 int semcnt = 1;
4216
4217 if (count)
4218 {
4219 SvGETMAGIC (count);
4220
4221 if (SvOK (count))
4222 semcnt = SvIV (count);
4223 }
4224
3065 RETVAL = sv_bless ( 4225 RETVAL = sv_bless (
3066 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), 4226 coro_waitarray_new (aTHX_ semcnt),
3067 GvSTASH (CvGV (cv)) 4227 GvSTASH (CvGV (cv))
3068 ); 4228 );
4229}
3069 OUTPUT: 4230 OUTPUT:
3070 RETVAL 4231 RETVAL
3071 4232
3072# helper for Coro::Channel 4233# helper for Coro::Channel and others
3073SV * 4234SV *
3074_alloc (int count) 4235_alloc (int count)
3075 CODE: 4236 CODE:
3076 RETVAL = coro_waitarray_new (aTHX_ count); 4237 RETVAL = coro_waitarray_new (aTHX_ count);
3077 OUTPUT: 4238 OUTPUT:
… …
3119 XSRETURN_NO; 4280 XSRETURN_NO;
3120} 4281}
3121 4282
3122void 4283void
3123waiters (SV *self) 4284waiters (SV *self)
3124 PPCODE: 4285 PPCODE:
3125{ 4286{
3126 AV *av = (AV *)SvRV (self); 4287 AV *av = (AV *)SvRV (self);
3127 int wcount = AvFILLp (av) + 1 - 1; 4288 int wcount = AvFILLp (av) + 1 - 1;
3128 4289
3129 if (GIMME_V == G_SCALAR) 4290 if (GIMME_V == G_SCALAR)
… …
3135 for (i = 1; i <= wcount; ++i) 4296 for (i = 1; i <= wcount; ++i)
3136 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); 4297 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3137 } 4298 }
3138} 4299}
3139 4300
4301MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4302
4303void
4304_may_delete (SV *sem, int count, unsigned int extra_refs)
4305 PPCODE:
4306{
4307 AV *av = (AV *)SvRV (sem);
4308
4309 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4310 && AvFILLp (av) == 0 /* no waiters, just count */
4311 && SvIV (AvARRAY (av)[0]) == count)
4312 XSRETURN_YES;
4313
4314 XSRETURN_NO;
4315}
4316
3140MODULE = Coro::State PACKAGE = Coro::Signal 4317MODULE = Coro::State PACKAGE = Coro::Signal
3141 4318
3142SV * 4319SV *
3143new (SV *klass) 4320new (SV *klass)
3144 CODE: 4321 CODE:
… …
3156 4333
3157void 4334void
3158broadcast (SV *self) 4335broadcast (SV *self)
3159 CODE: 4336 CODE:
3160{ 4337{
3161 AV *av = (AV *)SvRV (self); 4338 AV *av = (AV *)SvRV (self);
3162 coro_signal_wake (aTHX_ av, AvFILLp (av)); 4339 coro_signal_wake (aTHX_ av, AvFILLp (av));
3163} 4340}
3164 4341
3165void 4342void
3166send (SV *self) 4343send (SV *self)
… …
3174 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ 4351 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3175} 4352}
3176 4353
3177IV 4354IV
3178awaited (SV *self) 4355awaited (SV *self)
3179 CODE: 4356 CODE:
3180 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; 4357 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3181 OUTPUT: 4358 OUTPUT:
3182 RETVAL 4359 RETVAL
3183 4360
3184 4361
… …
3189 4366
3190void 4367void
3191_schedule (...) 4368_schedule (...)
3192 CODE: 4369 CODE:
3193{ 4370{
3194 static int incede; 4371 static int incede;
3195 4372
3196 api_cede_notself (aTHX); 4373 api_cede_notself (aTHX);
3197 4374
3198 ++incede; 4375 ++incede;
3199 while (coro_nready >= incede && api_cede (aTHX)) 4376 while (coro_nready >= incede && api_cede (aTHX))
… …
3215 4392
3216void 4393void
3217_register (char *target, char *proto, SV *req) 4394_register (char *target, char *proto, SV *req)
3218 CODE: 4395 CODE:
3219{ 4396{
3220 CV *req_cv = coro_sv_2cv (req); 4397 SV *req_cv = s_get_cv_croak (req);
3221 /* newXSproto doesn't return the CV on 5.8 */ 4398 /* newXSproto doesn't return the CV on 5.8 */
3222 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); 4399 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3223 sv_setpv ((SV *)slf_cv, proto); 4400 sv_setpv ((SV *)slf_cv, proto);
3224 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); 4401 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3225} 4402}
3226 4403
4404MODULE = Coro::State PACKAGE = Coro::Select
4405
4406void
4407patch_pp_sselect ()
4408 CODE:
4409 if (!coro_old_pp_sselect)
4410 {
4411 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4412 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4413 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4414 }
4415
4416void
4417unpatch_pp_sselect ()
4418 CODE:
4419 if (coro_old_pp_sselect)
4420 {
4421 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4422 coro_old_pp_sselect = 0;
4423 }
4424
4425MODULE = Coro::State PACKAGE = Coro::Util
4426
4427void
4428_exit (int code)
4429 CODE:
4430 _exit (code);
4431
4432NV
4433time ()
4434 CODE:
4435 RETVAL = nvtime (aTHX);
4436 OUTPUT:
4437 RETVAL
4438
4439NV
4440gettimeofday ()
4441 PPCODE:
4442{
4443 UV tv [2];
4444 u2time (aTHX_ tv);
4445 EXTEND (SP, 2);
4446 PUSHs (sv_2mortal (newSVuv (tv [0])));
4447 PUSHs (sv_2mortal (newSVuv (tv [1])));
4448}
4449

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