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Comparing Coro/Coro/State.xs (file contents):
Revision 1.283 by root, Sun Nov 16 11:12:57 2008 UTC vs.
Revision 1.434 by root, Sat Nov 2 19:48:50 2013 UTC

1/* this works around a bug in mingw32 providing a non-working setjmp */
2#define USE_NO_MINGW_SETJMP_TWO_ARGS
3
4#define NDEBUG 1 /* perl usually disables NDEBUG later */
5
1#include "libcoro/coro.c" 6#include "libcoro/coro.c"
2 7
3#define PERL_NO_GET_CONTEXT 8#define PERL_NO_GET_CONTEXT
4#define PERL_EXT 9#define PERL_EXT
5 10
6#include "EXTERN.h" 11#include "EXTERN.h"
7#include "perl.h" 12#include "perl.h"
8#include "XSUB.h" 13#include "XSUB.h"
9#include "perliol.h" 14#include "perliol.h"
10 15
11#include "patchlevel.h" 16#include "schmorp.h"
12 17
18#define ECB_NO_THREADS 1
19#include "ecb.h"
20
21#include <stddef.h>
13#include <stdio.h> 22#include <stdio.h>
14#include <errno.h> 23#include <errno.h>
15#include <assert.h> 24#include <assert.h>
16 25
17#ifdef WIN32 26#ifndef SVs_PADSTALE
27# define SVs_PADSTALE 0
28#endif
29
30#ifdef PadARRAY
31# define NEWPADAPI 1
32# define newPADLIST(var) (Newz (0, var, 1, PADLIST), Newx (PadlistARRAY (var), 2, PAD *))
33#else
34typedef AV PADNAMELIST;
35# if !PERL_VERSION_ATLEAST(5,8,0)
36typedef AV PADLIST;
37typedef AV PAD;
38# endif
39# define PadlistARRAY(pl) ((PAD **)AvARRAY (pl))
40# define PadlistMAX(pl) AvFILLp (pl)
41# define PadlistNAMES(pl) (*PadlistARRAY (pl))
42# define PadARRAY AvARRAY
43# define PadMAX AvFILLp
44# define newPADLIST(var) ((var) = newAV (), av_extend (var, 1))
45#endif
46
47#if defined(_WIN32)
48# undef HAS_GETTIMEOFDAY
18# undef setjmp 49# undef setjmp
19# undef longjmp 50# undef longjmp
20# undef _exit 51# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 52# define setjmp _setjmp /* deep magic */
22#else 53#else
23# include <inttypes.h> /* most portable stdint.h */ 54# include <inttypes.h> /* most portable stdint.h */
24#endif 55#endif
25 56
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 */ 57/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 58static int cctx_max_idle = 4;
55 59
56#define PERL_VERSION_ATLEAST(a,b,c) \ 60#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 61# 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
101/* 5.8.7 */
102#ifndef SvRV_set
103# define SvRV_set(s,v) SvRV(s) = (v)
104#endif
105
106#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
107# undef CORO_STACKGUARD
108#endif
109
110#ifndef CORO_STACKGUARD
111# define CORO_STACKGUARD 0
112#endif 62#endif
113 63
114/* prefer perl internal functions over our own? */ 64/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 65#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 66# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 67#endif
118 68
119/* The next macros try to return the current stack pointer, in an as 69/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 70 * portable way as possible. */
121#if __GNUC__ >= 4 71#if __GNUC__ >= 4
72# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 73# define STACKLEVEL __builtin_frame_address (0)
123#else 74#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 75# define dSTACKLEVEL volatile void *stacklevel
76# define STACKLEVEL ((void *)&stacklevel)
125#endif 77#endif
126 78
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 79#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 80
144#include "CoroAPI.h" 81#include "CoroAPI.h"
82#define GCoroAPI (&coroapi) /* very sneaky */
145 83
146#ifdef USE_ITHREADS 84#ifdef USE_ITHREADS
147# if CORO_PTHREAD 85# if CORO_PTHREAD
148static void *coro_thx; 86static void *coro_thx;
149# endif 87# endif
150#endif 88#endif
151 89
152/* helper storage struct for Coro::AIO */ 90#ifdef __linux
153struct io_state 91# include <time.h> /* for timespec */
154{ 92# include <syscall.h> /* for SYS_* */
155 AV *res; 93# ifdef SYS_clock_gettime
156 int errorno; 94# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
157 I32 laststype; /* U16 in 5.10.0 */ 95# define CORO_CLOCK_MONOTONIC 1
158 int laststatval; 96# define CORO_CLOCK_THREAD_CPUTIME_ID 3
159 Stat_t statcache; 97# endif
160}; 98#endif
161 99
162static double (*nvtime)(); /* so why doesn't it take void? */ 100static double (*nvtime)(); /* so why doesn't it take void? */
101static void (*u2time)(pTHX_ UV ret[2]);
102
103/* we hijack an hopefully unused CV flag for our purposes */
104#define CVf_SLF 0x4000
105static OP *pp_slf (pTHX);
106static void slf_destroy (pTHX_ struct coro *coro);
163 107
164static U32 cctx_gen; 108static U32 cctx_gen;
165static size_t cctx_stacksize = CORO_STACKSIZE; 109static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 110static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 111static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 112static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 113static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 114static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 115
116static AV *av_destroy; /* destruction queue */
117static SV *sv_manager; /* the manager coro */
118static SV *sv_idle; /* $Coro::idle */
119
172static GV *irsgv; /* $/ */ 120static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 121static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 122static SV *rv_diehook;
175static SV *rv_warnhook; 123static SV *rv_warnhook;
176static HV *hv_sig; /* %SIG */ 124static HV *hv_sig; /* %SIG */
177 125
178/* async_pool helper stuff */ 126/* async_pool helper stuff */
179static SV *sv_pool_rss; 127static SV *sv_pool_rss;
180static SV *sv_pool_size; 128static SV *sv_pool_size;
129static SV *sv_async_pool_idle; /* description string */
181static AV *av_async_pool; 130static AV *av_async_pool; /* idle pool */
131static SV *sv_Coro; /* class string */
132static CV *cv_pool_handler;
182 133
183/* Coro::AnyEvent */ 134/* Coro::AnyEvent */
184static SV *sv_activity; 135static SV *sv_activity;
185 136
137/* enable processtime/realtime profiling */
138static char enable_times;
139typedef U32 coro_ts[2];
140static coro_ts time_real, time_cpu;
141static char times_valid;
142
186static struct coro_cctx *cctx_first; 143static struct coro_cctx *cctx_first;
187static int cctx_count, cctx_idle; 144static int cctx_count, cctx_idle;
188 145
189enum { 146enum
147{
190 CC_MAPPED = 0x01, 148 CC_MAPPED = 0x01,
191 CC_NOREUSE = 0x02, /* throw this away after tracing */ 149 CC_NOREUSE = 0x02, /* throw this away after tracing */
192 CC_TRACE = 0x04, 150 CC_TRACE = 0x04,
193 CC_TRACE_SUB = 0x08, /* trace sub calls */ 151 CC_TRACE_SUB = 0x08, /* trace sub calls */
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 152 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
199typedef struct coro_cctx 157typedef struct coro_cctx
200{ 158{
201 struct coro_cctx *next; 159 struct coro_cctx *next;
202 160
203 /* the stack */ 161 /* the stack */
204 void *sptr; 162 struct coro_stack stack;
205 size_t ssize;
206 163
207 /* cpu state */ 164 /* cpu state */
208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 165 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166#ifndef NDEBUG
209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 167 JMPENV *idle_te; /* same as idle_sp, but for top_env */
168#endif
210 JMPENV *top_env; 169 JMPENV *top_env;
211 coro_context cctx; 170 coro_context cctx;
212 171
213 U32 gen; 172 U32 gen;
214#if CORO_USE_VALGRIND 173#if CORO_USE_VALGRIND
215 int valgrind_id; 174 int valgrind_id;
216#endif 175#endif
217 unsigned char flags; 176 unsigned char flags;
218} coro_cctx; 177} coro_cctx;
219 178
179static coro_cctx *cctx_current; /* the currently running cctx */
180
181/*****************************************************************************/
182
183static MGVTBL coro_state_vtbl;
184
220enum { 185enum
186{
221 CF_RUNNING = 0x0001, /* coroutine is running */ 187 CF_RUNNING = 0x0001, /* coroutine is running */
222 CF_READY = 0x0002, /* coroutine is ready */ 188 CF_READY = 0x0002, /* coroutine is ready */
223 CF_NEW = 0x0004, /* has never been switched to */ 189 CF_NEW = 0x0004, /* has never been switched to */
224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 190 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
191 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
192 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
225}; 193};
226 194
227/* the structure where most of the perl state is stored, overlaid on the cxstack */ 195/* the structure where most of the perl state is stored, overlaid on the cxstack */
228typedef struct 196typedef struct
229{ 197{
230 SV *defsv;
231 AV *defav;
232 SV *errsv;
233 SV *irsgv;
234#define VAR(name,type) type name; 198 #define VARx(name,expr,type) type name;
235# include "state.h" 199 #include "state.h"
236#undef VAR
237} perl_slots; 200} perl_slots;
238 201
202/* 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)) 203#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
240 204
241/* this is a structure representing a perl-level coroutine */ 205/* this is a structure representing a perl-level coroutine */
242struct coro { 206struct coro
207{
243 /* the C coroutine allocated to this perl coroutine, if any */ 208 /* the C coroutine allocated to this perl coroutine, if any */
244 coro_cctx *cctx; 209 coro_cctx *cctx;
245 210
246 /* process data */ 211 /* ready queue */
212 struct coro *next_ready;
213
214 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */ 215 struct CoroSLF slf_frame; /* saved slf frame */
248 AV *mainstack; 216 AV *mainstack;
249 perl_slots *slot; /* basically the saved sp */ 217 perl_slots *slot; /* basically the saved sp */
250 218
219 CV *startcv; /* the CV to execute */
251 AV *args; /* data associated with this coroutine (initial args) */ 220 AV *args; /* data associated with this coroutine (initial args) */
252 int refcnt; /* coroutines are refcounted, yes */
253 int flags; /* CF_ flags */ 221 int flags; /* CF_ flags */
254 HV *hv; /* the perl hash associated with this coro, if any */ 222 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
256 223
257 /* statistics */ 224 /* statistics */
258 int usecount; /* number of transfers to this coro */ 225 int usecount; /* number of transfers to this coro */
259 226
260 /* coro process data */ 227 /* coro process data */
261 int prio; 228 int prio;
262 SV *throw; /* exception to be thrown */ 229 SV *except; /* exception to be thrown */
230 SV *rouse_cb; /* last rouse callback */
231 AV *on_destroy; /* callbacks or coros to notify on destroy */
232 AV *status; /* the exit status list */
263 233
264 /* async_pool */ 234 /* async_pool */
265 SV *saved_deffh; 235 SV *saved_deffh;
236 SV *invoke_cb;
237 AV *invoke_av;
238
239 /* on_enter/on_leave */
240 AV *on_enter;
241 AV *on_leave;
242
243 /* swap_sv */
244 AV *swap_sv;
245
246 /* times */
247 coro_ts t_cpu, t_real;
266 248
267 /* linked list */ 249 /* linked list */
268 struct coro *next, *prev; 250 struct coro *next, *prev;
269}; 251};
270 252
271typedef struct coro *Coro__State; 253typedef struct coro *Coro__State;
272typedef struct coro *Coro__State_or_hashref; 254typedef struct coro *Coro__State_or_hashref;
273 255
256/* the following variables are effectively part of the perl context */
257/* and get copied between struct coro and these variables */
258/* the main reason we don't support windows process emulation */
274static struct CoroSLF slf_frame; /* the current slf frame */ 259static struct CoroSLF slf_frame; /* the current slf frame */
275 260
276/** Coro ********************************************************************/ 261/** Coro ********************************************************************/
277 262
278#define PRIO_MAX 3 263#define CORO_PRIO_MAX 3
279#define PRIO_HIGH 1 264#define CORO_PRIO_HIGH 1
280#define PRIO_NORMAL 0 265#define CORO_PRIO_NORMAL 0
281#define PRIO_LOW -1 266#define CORO_PRIO_LOW -1
282#define PRIO_IDLE -3 267#define CORO_PRIO_IDLE -3
283#define PRIO_MIN -4 268#define CORO_PRIO_MIN -4
284 269
285/* for Coro.pm */ 270/* for Coro.pm */
286static SV *coro_current; 271static SV *coro_current;
287static SV *coro_readyhook; 272static SV *coro_readyhook;
288static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 273static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
274static CV *cv_coro_run;
289static struct coro *coro_first; 275static struct coro *coro_first;
290#define coro_nready coroapi.nready 276#define coro_nready coroapi.nready
291 277
278/** JIT *********************************************************************/
279
280#if CORO_JIT
281 /* APPLE doesn't have mmap though */
282 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
283 #ifndef CORO_JIT_TYPE
284 #if ECB_AMD64 && CORO_JIT_UNIXY
285 #define CORO_JIT_TYPE "amd64-unix"
286 #elif __i386 && CORO_JIT_UNIXY
287 #define CORO_JIT_TYPE "x86-unix"
288 #endif
289 #endif
290#endif
291
292#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
293 #undef CORO_JIT
294#endif
295
296#if CORO_JIT
297 typedef void (*load_save_perl_slots_type)(perl_slots *);
298 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
299#endif
300
301/** Coro::Select ************************************************************/
302
303static OP *(*coro_old_pp_sselect) (pTHX);
304static SV *coro_select_select;
305
306/* horrible hack, but if it works... */
307static OP *
308coro_pp_sselect (pTHX)
309{
310 dSP;
311 PUSHMARK (SP - 4); /* fake argument list */
312 XPUSHs (coro_select_select);
313 PUTBACK;
314
315 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
316 PL_op->op_flags |= OPf_STACKED;
317 PL_op->op_private = 0;
318 return PL_ppaddr [OP_ENTERSUB](aTHX);
319}
320
321/** time stuff **************************************************************/
322
323#ifdef HAS_GETTIMEOFDAY
324
325ecb_inline void
326coro_u2time (pTHX_ UV ret[2])
327{
328 struct timeval tv;
329 gettimeofday (&tv, 0);
330
331 ret [0] = tv.tv_sec;
332 ret [1] = tv.tv_usec;
333}
334
335ecb_inline double
336coro_nvtime (void)
337{
338 struct timeval tv;
339 gettimeofday (&tv, 0);
340
341 return tv.tv_sec + tv.tv_usec * 1e-6;
342}
343
344ecb_inline void
345time_init (pTHX)
346{
347 nvtime = coro_nvtime;
348 u2time = coro_u2time;
349}
350
351#else
352
353ecb_inline void
354time_init (pTHX)
355{
356 SV **svp;
357
358 require_pv ("Time/HiRes.pm");
359
360 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
361
362 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
363 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
364
365 nvtime = INT2PTR (double (*)(), SvIV (*svp));
366
367 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
368 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
369}
370
371#endif
372
292/** lowlevel stuff **********************************************************/ 373/** lowlevel stuff **********************************************************/
293 374
294static SV * 375static SV * ecb_noinline
295coro_get_sv (pTHX_ const char *name, int create) 376coro_get_sv (pTHX_ const char *name, int create)
296{ 377{
297#if PERL_VERSION_ATLEAST (5,10,0) 378#if PERL_VERSION_ATLEAST (5,10,0)
298 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 379 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
299 get_sv (name, create); 380 get_sv (name, create);
300#endif 381#endif
301 return get_sv (name, create); 382 return get_sv (name, create);
302} 383}
303 384
304static AV * 385static AV * ecb_noinline
305coro_get_av (pTHX_ const char *name, int create) 386coro_get_av (pTHX_ const char *name, int create)
306{ 387{
307#if PERL_VERSION_ATLEAST (5,10,0) 388#if PERL_VERSION_ATLEAST (5,10,0)
308 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 389 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
309 get_av (name, create); 390 get_av (name, create);
310#endif 391#endif
311 return get_av (name, create); 392 return get_av (name, create);
312} 393}
313 394
314static HV * 395static HV * ecb_noinline
315coro_get_hv (pTHX_ const char *name, int create) 396coro_get_hv (pTHX_ const char *name, int create)
316{ 397{
317#if PERL_VERSION_ATLEAST (5,10,0) 398#if PERL_VERSION_ATLEAST (5,10,0)
318 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 399 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
319 get_hv (name, create); 400 get_hv (name, create);
320#endif 401#endif
321 return get_hv (name, create); 402 return get_hv (name, create);
322} 403}
323 404
324static AV * 405ecb_inline void
406coro_times_update (void)
407{
408#ifdef coro_clock_gettime
409 struct timespec ts;
410
411 ts.tv_sec = ts.tv_nsec = 0;
412 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
413 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
414
415 ts.tv_sec = ts.tv_nsec = 0;
416 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
417 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
418#else
419 dTHX;
420 UV tv[2];
421
422 u2time (aTHX_ tv);
423 time_real [0] = tv [0];
424 time_real [1] = tv [1] * 1000;
425#endif
426}
427
428ecb_inline void
429coro_times_add (struct coro *c)
430{
431 c->t_real [1] += time_real [1];
432 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
433 c->t_real [0] += time_real [0];
434
435 c->t_cpu [1] += time_cpu [1];
436 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
437 c->t_cpu [0] += time_cpu [0];
438}
439
440ecb_inline void
441coro_times_sub (struct coro *c)
442{
443 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
444 c->t_real [1] -= time_real [1];
445 c->t_real [0] -= time_real [0];
446
447 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
448 c->t_cpu [1] -= time_cpu [1];
449 c->t_cpu [0] -= time_cpu [0];
450}
451
452/*****************************************************************************/
453/* magic glue */
454
455#define CORO_MAGIC_type_cv 26
456#define CORO_MAGIC_type_state PERL_MAGIC_ext
457
458#define CORO_MAGIC_NN(sv, type) \
459 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
460 ? SvMAGIC (sv) \
461 : mg_find (sv, type))
462
463#define CORO_MAGIC(sv, type) \
464 (ecb_expect_true (SvMAGIC (sv)) \
465 ? CORO_MAGIC_NN (sv, type) \
466 : 0)
467
468#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
469#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
470
471ecb_inline MAGIC *
472SvSTATEhv_p (pTHX_ SV *coro)
473{
474 MAGIC *mg;
475
476 if (ecb_expect_true (
477 SvTYPE (coro) == SVt_PVHV
478 && (mg = CORO_MAGIC_state (coro))
479 && mg->mg_virtual == &coro_state_vtbl
480 ))
481 return mg;
482
483 return 0;
484}
485
486ecb_inline struct coro *
487SvSTATE_ (pTHX_ SV *coro)
488{
489 MAGIC *mg;
490
491 if (SvROK (coro))
492 coro = SvRV (coro);
493
494 mg = SvSTATEhv_p (aTHX_ coro);
495 if (!mg)
496 croak ("Coro::State object required");
497
498 return (struct coro *)mg->mg_ptr;
499}
500
501#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
502
503/* faster than SvSTATE, but expects a coroutine hv */
504#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
505#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
506
507/*****************************************************************************/
508/* padlist management and caching */
509
510ecb_inline PADLIST *
325coro_clone_padlist (pTHX_ CV *cv) 511coro_derive_padlist (pTHX_ CV *cv)
326{ 512{
327 AV *padlist = CvPADLIST (cv); 513 PADLIST *padlist = CvPADLIST (cv);
328 AV *newpadlist, *newpad; 514 PADLIST *newpadlist;
515 PAD *newpad;
516 PADOFFSET off = PadlistMAX (padlist) + 1;
329 517
330 newpadlist = newAV (); 518#if NEWPADAPI
519
520 while (!PadlistARRAY (padlist)[off - 1])
521 --off;
522
523 Perl_pad_push (aTHX_ padlist, off);
524 newpad = PadlistARRAY (padlist)[off];
525 PadlistARRAY (padlist)[off] = 0;
526
527#else
528
529#if PERL_VERSION_ATLEAST (5,10,0)
530 Perl_pad_push (aTHX_ padlist, off);
531#else
532 Perl_pad_push (aTHX_ padlist, off, 1);
533#endif
534
535 newpad = PadlistARRAY (padlist)[off];
536 PadlistMAX (padlist) = off - 1;
537
538#endif
539
540 newPADLIST (newpadlist);
541#if !PERL_VERSION_ATLEAST(5,15,3)
542 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
331 AvREAL_off (newpadlist); 543 AvREAL_off (newpadlist);
332#if PERL_VERSION_ATLEAST (5,10,0) 544#endif
333 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); 545
546 /* Already extended to 2 elements by newPADLIST. */
547 PadlistMAX (newpadlist) = 1;
548 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
549 PadlistARRAY (newpadlist)[1] = newpad;
550
551 return newpadlist;
552}
553
554ecb_inline void
555free_padlist (pTHX_ PADLIST *padlist)
556{
557 /* may be during global destruction */
558 if (!IN_DESTRUCT)
559 {
560 I32 i = PadlistMAX (padlist);
561
562 while (i > 0) /* special-case index 0 */
563 {
564 /* we try to be extra-careful here */
565 PAD *pad = PadlistARRAY (padlist)[i--];
566 I32 j = PadMAX (pad);
567
568 while (j >= 0)
569 SvREFCNT_dec (PadARRAY (pad)[j--]);
570
571 PadMAX (pad) = -1;
572 SvREFCNT_dec (pad);
573 }
574
575 SvREFCNT_dec (PadlistNAMES (padlist));
576
577#if NEWPADAPI
578 Safefree (PadlistARRAY (padlist));
579 Safefree (padlist);
334#else 580#else
335 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
336#endif
337 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
338 --AvFILLp (padlist);
339
340 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
341 av_store (newpadlist, 1, (SV *)newpad);
342
343 return newpadlist;
344}
345
346static void
347free_padlist (pTHX_ AV *padlist)
348{
349 /* may be during global destruction */
350 if (SvREFCNT (padlist))
351 {
352 I32 i = AvFILLp (padlist); 581 AvFILLp (padlist) = -1;
353 while (i >= 0) 582 AvREAL_off (padlist);
354 {
355 SV **svp = av_fetch (padlist, i--, FALSE);
356 if (svp)
357 {
358 SV *sv;
359 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))
360 SvREFCNT_dec (sv);
361
362 SvREFCNT_dec (*svp);
363 }
364 }
365
366 SvREFCNT_dec ((SV*)padlist); 583 SvREFCNT_dec ((SV*)padlist);
584#endif
367 } 585 }
368} 586}
369 587
370static int 588static int
371coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 589coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
372{ 590{
373 AV *padlist; 591 PADLIST *padlist;
374 AV *av = (AV *)mg->mg_obj; 592 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
593 size_t len = *(size_t *)mg->mg_ptr;
375 594
376 /* casting is fun. */ 595 /* perl manages to free our internal AV and _then_ call us */
377 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 596 if (IN_DESTRUCT)
597 return 0;
598
599 while (len--)
378 free_padlist (aTHX_ padlist); 600 free_padlist (aTHX_ padlists[len]);
379
380 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
381 601
382 return 0; 602 return 0;
383} 603}
384
385#define CORO_MAGIC_type_cv PERL_MAGIC_ext
386#define CORO_MAGIC_type_state PERL_MAGIC_ext
387 604
388static MGVTBL coro_cv_vtbl = { 605static MGVTBL coro_cv_vtbl = {
389 0, 0, 0, 0, 606 0, 0, 0, 0,
390 coro_cv_free 607 coro_cv_free
391}; 608};
392 609
393#define CORO_MAGIC(sv, type) \
394 expect_true (SvMAGIC (sv)) \
395 ? expect_true (SvMAGIC (sv)->mg_type == type) \
396 ? SvMAGIC (sv) \
397 : mg_find (sv, type) \
398 : 0
399
400#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
401#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
402
403INLINE struct coro *
404SvSTATE_ (pTHX_ SV *coro)
405{
406 HV *stash;
407 MAGIC *mg;
408
409 if (SvROK (coro))
410 coro = SvRV (coro);
411
412 if (expect_false (SvTYPE (coro) != SVt_PVHV))
413 croak ("Coro::State object required");
414
415 stash = SvSTASH (coro);
416 if (expect_false (stash != coro_stash && stash != coro_state_stash))
417 {
418 /* very slow, but rare, check */
419 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
420 croak ("Coro::State object required");
421 }
422
423 mg = CORO_MAGIC_state (coro);
424 return (struct coro *)mg->mg_ptr;
425}
426
427#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
428
429/* fastert than SvSTATE, but expects a coroutine hv */
430INLINE struct coro *
431SvSTATE_hv (SV *sv)
432{
433 MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state)
434 ? SvMAGIC (sv)
435 : mg_find (sv, CORO_MAGIC_type_state);
436
437 return (struct coro *)mg->mg_ptr;
438}
439
440#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
441
442/* the next two functions merely cache the padlists */ 610/* the next two functions merely cache the padlists */
443static void 611ecb_inline void
444get_padlist (pTHX_ CV *cv) 612get_padlist (pTHX_ CV *cv)
445{ 613{
446 MAGIC *mg = CORO_MAGIC_cv (cv); 614 MAGIC *mg = CORO_MAGIC_cv (cv);
447 AV *av; 615 size_t *lenp;
448 616
449 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 617 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
450 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 618 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
451 else 619 else
452 { 620 {
453#if CORO_PREFER_PERL_FUNCTIONS 621#if CORO_PREFER_PERL_FUNCTIONS
454 /* this is probably cleaner? but also slower! */ 622 /* this is probably cleaner? but also slower! */
455 /* in practise, it seems to be less stable */ 623 /* in practise, it seems to be less stable */
456 CV *cp = Perl_cv_clone (cv); 624 CV *cp = Perl_cv_clone (aTHX_ cv);
457 CvPADLIST (cv) = CvPADLIST (cp); 625 CvPADLIST (cv) = CvPADLIST (cp);
458 CvPADLIST (cp) = 0; 626 CvPADLIST (cp) = 0;
459 SvREFCNT_dec (cp); 627 SvREFCNT_dec (cp);
460#else 628#else
461 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 629 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
462#endif 630#endif
463 } 631 }
464} 632}
465 633
466static void 634ecb_inline void
467put_padlist (pTHX_ CV *cv) 635put_padlist (pTHX_ CV *cv)
468{ 636{
469 MAGIC *mg = CORO_MAGIC_cv (cv); 637 MAGIC *mg = CORO_MAGIC_cv (cv);
470 AV *av;
471 638
472 if (expect_false (!mg)) 639 if (ecb_expect_false (!mg))
640 {
473 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 641 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
642 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
643 mg->mg_len = 1; /* so mg_free frees mg_ptr */
644 }
645 else
646 Renew (mg->mg_ptr,
647 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
648 char);
474 649
475 av = (AV *)mg->mg_obj; 650 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
476
477 if (expect_false (AvFILLp (av) >= AvMAX (av)))
478 av_extend (av, AvMAX (av) + 1);
479
480 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
481} 651}
482 652
483/** load & save, init *******************************************************/ 653/** load & save, init *******************************************************/
654
655ecb_inline void
656swap_sv (SV *a, SV *b)
657{
658 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
659 SV tmp;
660
661 /* swap sv_any */
662 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
663
664 /* swap sv_flags */
665 SvFLAGS (&tmp) = SvFLAGS (a);
666 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
667 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
668
669#if PERL_VERSION_ATLEAST (5,10,0)
670 /* perl 5.10 and later complicates this _quite_ a bit, but it also
671 * is much faster, so no quarrels here. alternatively, we could
672 * sv_upgrade to avoid this.
673 */
674 {
675 /* swap sv_u */
676 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
677
678 /* if SvANY points to the head, we need to adjust the pointers,
679 * as the pointer for a still points to b, and maybe vice versa.
680 */
681 #define svany_in_head(type) \
682 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
683
684 if (svany_in_head (SvTYPE (a)))
685 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
686
687 if (svany_in_head (SvTYPE (b)))
688 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
689 }
690#endif
691}
692
693/* swap sv heads, at least logically */
694static void
695swap_svs (pTHX_ Coro__State c)
696{
697 int i;
698
699 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
700 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
701}
702
703#define SWAP_SVS(coro) \
704 if (ecb_expect_false ((coro)->swap_sv)) \
705 swap_svs (aTHX_ (coro))
706
707static void
708on_enterleave_call (pTHX_ SV *cb);
484 709
485static void 710static void
486load_perl (pTHX_ Coro__State c) 711load_perl (pTHX_ Coro__State c)
487{ 712{
488 perl_slots *slot = c->slot; 713 perl_slots *slot = c->slot;
489 c->slot = 0; 714 c->slot = 0;
490 715
491 PL_mainstack = c->mainstack; 716 PL_mainstack = c->mainstack;
492 717
493 GvSV (PL_defgv) = slot->defsv; 718#if CORO_JIT
494 GvAV (PL_defgv) = slot->defav; 719 load_perl_slots (slot);
495 GvSV (PL_errgv) = slot->errsv; 720#else
496 GvSV (irsgv) = slot->irsgv;
497
498 #define VAR(name,type) PL_ ## name = slot->name; 721 #define VARx(name,expr,type) expr = slot->name;
499 # include "state.h" 722 #include "state.h"
500 #undef VAR 723#endif
501 724
502 { 725 {
503 dSP; 726 dSP;
504 727
505 CV *cv; 728 CV *cv;
506 729
507 /* now do the ugly restore mess */ 730 /* now do the ugly restore mess */
508 while (expect_true (cv = (CV *)POPs)) 731 while (ecb_expect_true (cv = (CV *)POPs))
509 { 732 {
510 put_padlist (aTHX_ cv); /* mark this padlist as available */ 733 put_padlist (aTHX_ cv); /* mark this padlist as available */
511 CvDEPTH (cv) = PTR2IV (POPs); 734 CvDEPTH (cv) = PTR2IV (POPs);
512 CvPADLIST (cv) = (AV *)POPs; 735 CvPADLIST (cv) = (PADLIST *)POPs;
513 } 736 }
514 737
515 PUTBACK; 738 PUTBACK;
516 } 739 }
517 740
518 slf_frame = c->slf_frame; 741 slf_frame = c->slf_frame;
742 CORO_THROW = c->except;
743
744 if (ecb_expect_false (enable_times))
745 {
746 if (ecb_expect_false (!times_valid))
747 coro_times_update ();
748
749 coro_times_sub (c);
750 }
751
752 if (ecb_expect_false (c->on_enter))
753 {
754 int i;
755
756 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
757 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
758 }
759
760 SWAP_SVS (c);
519} 761}
520 762
521static void 763static void
522save_perl (pTHX_ Coro__State c) 764save_perl (pTHX_ Coro__State c)
523{ 765{
766 SWAP_SVS (c);
767
768 if (ecb_expect_false (c->on_leave))
769 {
770 int i;
771
772 for (i = AvFILLp (c->on_leave); i >= 0; --i)
773 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
774 }
775
776 times_valid = 0;
777
778 if (ecb_expect_false (enable_times))
779 {
780 coro_times_update (); times_valid = 1;
781 coro_times_add (c);
782 }
783
784 c->except = CORO_THROW;
524 c->slf_frame = slf_frame; 785 c->slf_frame = slf_frame;
525 786
526 { 787 {
527 dSP; 788 dSP;
528 I32 cxix = cxstack_ix; 789 I32 cxix = cxstack_ix;
… …
536 797
537 XPUSHs (Nullsv); 798 XPUSHs (Nullsv);
538 /* this loop was inspired by pp_caller */ 799 /* this loop was inspired by pp_caller */
539 for (;;) 800 for (;;)
540 { 801 {
541 while (expect_true (cxix >= 0)) 802 while (ecb_expect_true (cxix >= 0))
542 { 803 {
543 PERL_CONTEXT *cx = &ccstk[cxix--]; 804 PERL_CONTEXT *cx = &ccstk[cxix--];
544 805
545 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 806 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
546 { 807 {
547 CV *cv = cx->blk_sub.cv; 808 CV *cv = cx->blk_sub.cv;
548 809
549 if (expect_true (CvDEPTH (cv))) 810 if (ecb_expect_true (CvDEPTH (cv)))
550 { 811 {
551 EXTEND (SP, 3); 812 EXTEND (SP, 3);
552 PUSHs ((SV *)CvPADLIST (cv)); 813 PUSHs ((SV *)CvPADLIST (cv));
553 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 814 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
554 PUSHs ((SV *)cv); 815 PUSHs ((SV *)cv);
… …
557 get_padlist (aTHX_ cv); 818 get_padlist (aTHX_ cv);
558 } 819 }
559 } 820 }
560 } 821 }
561 822
562 if (expect_true (top_si->si_type == PERLSI_MAIN)) 823 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
563 break; 824 break;
564 825
565 top_si = top_si->si_prev; 826 top_si = top_si->si_prev;
566 ccstk = top_si->si_cxstack; 827 ccstk = top_si->si_cxstack;
567 cxix = top_si->si_cxix; 828 cxix = top_si->si_cxix;
… …
569 830
570 PUTBACK; 831 PUTBACK;
571 } 832 }
572 833
573 /* allocate some space on the context stack for our purposes */ 834 /* allocate some space on the context stack for our purposes */
574 /* we manually unroll here, as usually 2 slots is enough */ 835 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
575 if (SLOT_COUNT >= 1) CXINC;
576 if (SLOT_COUNT >= 2) CXINC;
577 if (SLOT_COUNT >= 3) CXINC;
578 { 836 {
579 int i; 837 unsigned int i;
838
580 for (i = 3; i < SLOT_COUNT; ++i) 839 for (i = 0; i < SLOT_COUNT; ++i)
581 CXINC; 840 CXINC;
582 } 841
583 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 842 cxstack_ix -= SLOT_COUNT; /* undo allocation */
843 }
584 844
585 c->mainstack = PL_mainstack; 845 c->mainstack = PL_mainstack;
586 846
587 { 847 {
588 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 848 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
589 849
590 slot->defav = GvAV (PL_defgv); 850#if CORO_JIT
591 slot->defsv = DEFSV; 851 save_perl_slots (slot);
592 slot->errsv = ERRSV; 852#else
593 slot->irsgv = GvSV (irsgv);
594
595 #define VAR(name,type) slot->name = PL_ ## name; 853 #define VARx(name,expr,type) slot->name = expr;
596 # include "state.h" 854 #include "state.h"
597 #undef VAR 855#endif
598 } 856 }
599} 857}
600 858
601/* 859/*
602 * allocate various perl stacks. This is almost an exact copy 860 * allocate various perl stacks. This is almost an exact copy
603 * of perl.c:init_stacks, except that it uses less memory 861 * of perl.c:init_stacks, except that it uses less memory
604 * on the (sometimes correct) assumption that coroutines do 862 * on the (sometimes correct) assumption that coroutines do
605 * not usually need a lot of stackspace. 863 * not usually need a lot of stackspace.
606 */ 864 */
607#if CORO_PREFER_PERL_FUNCTIONS 865#if CORO_PREFER_PERL_FUNCTIONS
608# define coro_init_stacks init_stacks 866# define coro_init_stacks(thx) init_stacks ()
609#else 867#else
610static void 868static void
611coro_init_stacks (pTHX) 869coro_init_stacks (pTHX)
612{ 870{
613 PL_curstackinfo = new_stackinfo(32, 8); 871 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
614 PL_curstackinfo->si_type = PERLSI_MAIN; 872 PL_curstackinfo->si_type = PERLSI_MAIN;
615 PL_curstack = PL_curstackinfo->si_stack; 873 PL_curstack = PL_curstackinfo->si_stack;
616 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 874 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
617 875
618 PL_stack_base = AvARRAY(PL_curstack); 876 PL_stack_base = AvARRAY(PL_curstack);
… …
633#endif 891#endif
634 892
635 New(54,PL_scopestack,8,I32); 893 New(54,PL_scopestack,8,I32);
636 PL_scopestack_ix = 0; 894 PL_scopestack_ix = 0;
637 PL_scopestack_max = 8; 895 PL_scopestack_max = 8;
896#if HAS_SCOPESTACK_NAME
897 New(54,PL_scopestack_name,8,const char*);
898#endif
638 899
639 New(54,PL_savestack,24,ANY); 900 New(54,PL_savestack,24,ANY);
640 PL_savestack_ix = 0; 901 PL_savestack_ix = 0;
641 PL_savestack_max = 24; 902 PL_savestack_max = 24;
642 903
… …
670 } 931 }
671 932
672 Safefree (PL_tmps_stack); 933 Safefree (PL_tmps_stack);
673 Safefree (PL_markstack); 934 Safefree (PL_markstack);
674 Safefree (PL_scopestack); 935 Safefree (PL_scopestack);
936#if HAS_SCOPESTACK_NAME
937 Safefree (PL_scopestack_name);
938#endif
675 Safefree (PL_savestack); 939 Safefree (PL_savestack);
676#if !PERL_VERSION_ATLEAST (5,10,0) 940#if !PERL_VERSION_ATLEAST (5,10,0)
677 Safefree (PL_retstack); 941 Safefree (PL_retstack);
678#endif 942#endif
679} 943}
680 944
945#define CORO_RSS \
946 rss += sizeof (SYM (curstackinfo)); \
947 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
948 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
949 rss += SYM (tmps_max) * sizeof (SV *); \
950 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
951 rss += SYM (scopestack_max) * sizeof (I32); \
952 rss += SYM (savestack_max) * sizeof (ANY);
953
681static size_t 954static size_t
682coro_rss (pTHX_ struct coro *coro) 955coro_rss (pTHX_ struct coro *coro)
683{ 956{
684 size_t rss = sizeof (*coro); 957 size_t rss = sizeof (*coro);
685 958
686 if (coro->mainstack) 959 if (coro->mainstack)
687 { 960 {
688 perl_slots tmp_slot;
689 perl_slots *slot;
690
691 if (coro->flags & CF_RUNNING) 961 if (coro->flags & CF_RUNNING)
692 { 962 {
693 slot = &tmp_slot; 963 #define SYM(sym) PL_ ## sym
694 964 CORO_RSS;
695 #define VAR(name,type) slot->name = PL_ ## name;
696 # include "state.h"
697 #undef VAR 965 #undef SYM
698 } 966 }
699 else 967 else
700 slot = coro->slot;
701
702 if (slot)
703 { 968 {
704 rss += sizeof (slot->curstackinfo); 969 #define SYM(sym) coro->slot->sym
705 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 970 CORO_RSS;
706 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 971 #undef SYM
707 rss += slot->tmps_max * sizeof (SV *);
708 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
709 rss += slot->scopestack_max * sizeof (I32);
710 rss += slot->savestack_max * sizeof (ANY);
711
712#if !PERL_VERSION_ATLEAST (5,10,0)
713 rss += slot->retstack_max * sizeof (OP *);
714#endif
715 } 972 }
716 } 973 }
717 974
718 return rss; 975 return rss;
719} 976}
… …
732#endif 989#endif
733 990
734/* 991/*
735 * This overrides the default magic get method of %SIG elements. 992 * This overrides the default magic get method of %SIG elements.
736 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 993 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
737 * and instead of tryign to save and restore the hash elements, we just provide 994 * and instead of trying to save and restore the hash elements (extremely slow),
738 * readback here. 995 * we just provide our own readback here.
739 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
740 * not expecting this to actually change the hook. This is a potential problem
741 * when a schedule happens then, but we ignore this.
742 */ 996 */
743static int 997static int ecb_cold
744coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 998coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
745{ 999{
746 const char *s = MgPV_nolen_const (mg); 1000 const char *s = MgPV_nolen_const (mg);
747 1001
748 if (*s == '_') 1002 if (*s == '_')
749 { 1003 {
750 SV **svp = 0; 1004 SV **svp = 0;
751 1005
752 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1006 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
753 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1007 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
754 1008
755 if (svp) 1009 if (svp)
756 { 1010 {
757 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1011 SV *ssv;
1012
1013 if (!*svp)
1014 ssv = &PL_sv_undef;
1015 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1016 ssv = sv_2mortal (newRV_inc (*svp));
1017 else
1018 ssv = *svp;
1019
1020 sv_setsv (sv, ssv);
758 return 0; 1021 return 0;
759 } 1022 }
760 } 1023 }
761 1024
762 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1025 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
763} 1026}
764 1027
765static int 1028static int ecb_cold
766coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1029coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
767{ 1030{
768 const char *s = MgPV_nolen_const (mg); 1031 const char *s = MgPV_nolen_const (mg);
769 1032
770 if (*s == '_') 1033 if (*s == '_')
… …
784 } 1047 }
785 1048
786 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1049 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
787} 1050}
788 1051
789static int 1052static int ecb_cold
790coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1053coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
791{ 1054{
792 const char *s = MgPV_nolen_const (mg); 1055 const char *s = MgPV_nolen_const (mg);
793 1056
794 if (*s == '_') 1057 if (*s == '_')
… …
799 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1062 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
800 1063
801 if (svp) 1064 if (svp)
802 { 1065 {
803 SV *old = *svp; 1066 SV *old = *svp;
804 *svp = newSVsv (sv); 1067 *svp = SvOK (sv) ? newSVsv (sv) : 0;
805 SvREFCNT_dec (old); 1068 SvREFCNT_dec (old);
806 return 0; 1069 return 0;
807 } 1070 }
808 } 1071 }
809 1072
… …
821slf_check_nop (pTHX_ struct CoroSLF *frame) 1084slf_check_nop (pTHX_ struct CoroSLF *frame)
822{ 1085{
823 return 0; 1086 return 0;
824} 1087}
825 1088
826static void 1089static int
1090slf_check_repeat (pTHX_ struct CoroSLF *frame)
1091{
1092 return 1;
1093}
1094
1095static UNOP init_perl_op;
1096
1097ecb_noinline static void /* noinline to keep it out of the transfer fast path */
827coro_setup (pTHX_ struct coro *coro) 1098init_perl (pTHX_ struct coro *coro)
828{ 1099{
829 /* 1100 /*
830 * emulate part of the perl startup here. 1101 * emulate part of the perl startup here.
831 */ 1102 */
832 coro_init_stacks (aTHX); 1103 coro_init_stacks (aTHX);
833 1104
834 PL_runops = RUNOPS_DEFAULT; 1105 PL_runops = RUNOPS_DEFAULT;
835 PL_curcop = &PL_compiling; 1106 PL_curcop = &PL_compiling;
836 PL_in_eval = EVAL_NULL; 1107 PL_in_eval = EVAL_NULL;
837 PL_comppad = 0; 1108 PL_comppad = 0;
1109 PL_comppad_name = 0;
1110 PL_comppad_name_fill = 0;
1111 PL_comppad_name_floor = 0;
838 PL_curpm = 0; 1112 PL_curpm = 0;
839 PL_curpad = 0; 1113 PL_curpad = 0;
840 PL_localizing = 0; 1114 PL_localizing = 0;
841 PL_dirty = 0;
842 PL_restartop = 0; 1115 PL_restartop = 0;
843#if PERL_VERSION_ATLEAST (5,10,0) 1116#if PERL_VERSION_ATLEAST (5,10,0)
844 PL_parser = 0; 1117 PL_parser = 0;
845#endif 1118#endif
1119 PL_hints = 0;
846 1120
847 /* recreate the die/warn hooks */ 1121 /* recreate the die/warn hooks */
848 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1122 PL_diehook = SvREFCNT_inc (rv_diehook);
849 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1123 PL_warnhook = SvREFCNT_inc (rv_warnhook);
850 1124
851 GvSV (PL_defgv) = newSV (0); 1125 GvSV (PL_defgv) = newSV (0);
852 GvAV (PL_defgv) = coro->args; coro->args = 0; 1126 GvAV (PL_defgv) = coro->args; coro->args = 0;
853 GvSV (PL_errgv) = newSV (0); 1127 GvSV (PL_errgv) = newSV (0);
854 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1128 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1129 GvHV (PL_hintgv) = 0;
855 PL_rs = newSVsv (GvSV (irsgv)); 1130 PL_rs = newSVsv (GvSV (irsgv));
856 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1131 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
857 1132
858 { 1133 {
859 dSP; 1134 dSP;
860 UNOP myop; 1135 UNOP myop;
861 1136
862 Zero (&myop, 1, UNOP); 1137 Zero (&myop, 1, UNOP);
863 myop.op_next = Nullop; 1138 myop.op_next = Nullop;
1139 myop.op_type = OP_ENTERSUB;
864 myop.op_flags = OPf_WANT_VOID; 1140 myop.op_flags = OPf_WANT_VOID;
865 1141
866 PUSHMARK (SP); 1142 PUSHMARK (SP);
867 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1143 PUSHs ((SV *)coro->startcv);
868 PUTBACK; 1144 PUTBACK;
869 PL_op = (OP *)&myop; 1145 PL_op = (OP *)&myop;
870 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1146 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
871 SPAGAIN;
872 } 1147 }
873 1148
874 /* this newly created coroutine might be run on an existing cctx which most 1149 /* this newly created coroutine might be run on an existing cctx which most
875 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1150 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
876 */ 1151 */
877 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1152 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
878 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1153 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
879} 1154 slf_frame.destroy = 0;
880 1155
1156 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1157 init_perl_op.op_next = PL_op;
1158 init_perl_op.op_type = OP_ENTERSUB;
1159 init_perl_op.op_ppaddr = pp_slf;
1160 /* no flags etc. required, as an init function won't be called */
1161
1162 PL_op = (OP *)&init_perl_op;
1163
1164 /* copy throw, in case it was set before init_perl */
1165 CORO_THROW = coro->except;
1166
1167 SWAP_SVS (coro);
1168
1169 if (ecb_expect_false (enable_times))
1170 {
1171 coro_times_update ();
1172 coro_times_sub (coro);
1173 }
1174}
1175
881static void 1176static void
882coro_destruct (pTHX_ struct coro *coro) 1177coro_unwind_stacks (pTHX)
883{ 1178{
884 if (!IN_DESTRUCT) 1179 if (!IN_DESTRUCT)
885 { 1180 {
886 /* restore all saved variables and stuff */ 1181 /* restore all saved variables and stuff */
887 LEAVE_SCOPE (0); 1182 LEAVE_SCOPE (0);
… …
895 POPSTACK_TO (PL_mainstack); 1190 POPSTACK_TO (PL_mainstack);
896 1191
897 /* unwind main stack */ 1192 /* unwind main stack */
898 dounwind (-1); 1193 dounwind (-1);
899 } 1194 }
1195}
900 1196
901 SvREFCNT_dec (GvSV (PL_defgv)); 1197static void
902 SvREFCNT_dec (GvAV (PL_defgv)); 1198destroy_perl (pTHX_ struct coro *coro)
903 SvREFCNT_dec (GvSV (PL_errgv)); 1199{
904 SvREFCNT_dec (PL_defoutgv); 1200 SV *svf [9];
905 SvREFCNT_dec (PL_rs);
906 SvREFCNT_dec (GvSV (irsgv));
907 1201
908 SvREFCNT_dec (PL_diehook);
909 SvREFCNT_dec (PL_warnhook);
910 1202 {
1203 SV *old_current = SvRV (coro_current);
1204 struct coro *current = SvSTATE (old_current);
1205
1206 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1207
1208 save_perl (aTHX_ current);
1209
1210 /* this will cause transfer_check to croak on block*/
1211 SvRV_set (coro_current, (SV *)coro->hv);
1212
1213 load_perl (aTHX_ coro);
1214
1215 coro_unwind_stacks (aTHX);
1216
1217 /* restore swapped sv's */
1218 SWAP_SVS (coro);
1219
1220 coro_destruct_stacks (aTHX);
1221
1222 /* now save some sv's to be free'd later */
1223 svf [0] = GvSV (PL_defgv);
1224 svf [1] = (SV *)GvAV (PL_defgv);
1225 svf [2] = GvSV (PL_errgv);
1226 svf [3] = (SV *)PL_defoutgv;
1227 svf [4] = PL_rs;
1228 svf [5] = GvSV (irsgv);
1229 svf [6] = (SV *)GvHV (PL_hintgv);
1230 svf [7] = PL_diehook;
1231 svf [8] = PL_warnhook;
1232 assert (9 == sizeof (svf) / sizeof (*svf));
1233
1234 SvRV_set (coro_current, old_current);
1235
1236 load_perl (aTHX_ current);
1237 }
1238
1239 {
1240 unsigned int i;
1241
1242 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1243 SvREFCNT_dec (svf [i]);
1244
911 SvREFCNT_dec (coro->saved_deffh); 1245 SvREFCNT_dec (coro->saved_deffh);
912 SvREFCNT_dec (coro->throw); 1246 SvREFCNT_dec (coro->rouse_cb);
913 1247 SvREFCNT_dec (coro->invoke_cb);
914 coro_destruct_stacks (aTHX); 1248 SvREFCNT_dec (coro->invoke_av);
1249 }
915} 1250}
916 1251
917INLINE void 1252ecb_inline void
918free_coro_mortal (pTHX) 1253free_coro_mortal (pTHX)
919{ 1254{
920 if (expect_true (coro_mortal)) 1255 if (ecb_expect_true (coro_mortal))
921 { 1256 {
922 SvREFCNT_dec (coro_mortal); 1257 SvREFCNT_dec ((SV *)coro_mortal);
923 coro_mortal = 0; 1258 coro_mortal = 0;
924 } 1259 }
925} 1260}
926 1261
927static int 1262static int
928runops_trace (pTHX) 1263runops_trace (pTHX)
929{ 1264{
930 COP *oldcop = 0; 1265 COP *oldcop = 0;
931 int oldcxix = -2; 1266 int oldcxix = -2;
932 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
933 coro_cctx *cctx = coro->cctx;
934 1267
935 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1268 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
936 { 1269 {
937 PERL_ASYNC_CHECK (); 1270 PERL_ASYNC_CHECK ();
938 1271
939 if (cctx->flags & CC_TRACE_ALL) 1272 if (cctx_current->flags & CC_TRACE_ALL)
940 { 1273 {
941 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1274 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
942 { 1275 {
943 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1276 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
944 SV **bot, **top; 1277 SV **bot, **top;
945 AV *av = newAV (); /* return values */ 1278 AV *av = newAV (); /* return values */
946 SV **cb; 1279 SV **cb;
… …
983 1316
984 if (PL_curcop != &PL_compiling) 1317 if (PL_curcop != &PL_compiling)
985 { 1318 {
986 SV **cb; 1319 SV **cb;
987 1320
988 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1321 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
989 { 1322 {
990 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1323 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
991 1324
992 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1325 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
993 { 1326 {
994 runops_proc_t old_runops = PL_runops;
995 dSP; 1327 dSP;
996 GV *gv = CvGV (cx->blk_sub.cv); 1328 GV *gv = CvGV (cx->blk_sub.cv);
997 SV *fullname = sv_2mortal (newSV (0)); 1329 SV *fullname = sv_2mortal (newSV (0));
998 1330
999 if (isGV (gv)) 1331 if (isGV (gv))
… …
1004 SAVETMPS; 1336 SAVETMPS;
1005 EXTEND (SP, 3); 1337 EXTEND (SP, 3);
1006 PUSHMARK (SP); 1338 PUSHMARK (SP);
1007 PUSHs (&PL_sv_yes); 1339 PUSHs (&PL_sv_yes);
1008 PUSHs (fullname); 1340 PUSHs (fullname);
1009 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1341 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1010 PUTBACK; 1342 PUTBACK;
1011 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1343 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1012 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1344 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1013 SPAGAIN; 1345 SPAGAIN;
1014 FREETMPS; 1346 FREETMPS;
… …
1017 } 1349 }
1018 1350
1019 oldcxix = cxstack_ix; 1351 oldcxix = cxstack_ix;
1020 } 1352 }
1021 1353
1022 if (cctx->flags & CC_TRACE_LINE) 1354 if (cctx_current->flags & CC_TRACE_LINE)
1023 { 1355 {
1024 dSP; 1356 dSP;
1025 1357
1026 PL_runops = RUNOPS_DEFAULT; 1358 PL_runops = RUNOPS_DEFAULT;
1027 ENTER; 1359 ENTER;
… …
1046 1378
1047 TAINT_NOT; 1379 TAINT_NOT;
1048 return 0; 1380 return 0;
1049} 1381}
1050 1382
1383static struct CoroSLF cctx_ssl_frame;
1384
1051static void 1385static void
1052prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1386slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1053{ 1387{
1054 ta->prev = (struct coro *)cctx;
1055 ta->next = 0; 1388 ta->prev = 0;
1056} 1389}
1057 1390
1058/* inject a fake call to Coro::State::_cctx_init into the execution */ 1391static int
1059/* _cctx_init should be careful, as it could be called at almost any time */ 1392slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1060/* during execution of a perl program */
1061/* also initialises PL_top_env */
1062static void NOINLINE
1063cctx_prepare (pTHX_ coro_cctx *cctx)
1064{ 1393{
1065 dSP; 1394 *frame = cctx_ssl_frame;
1066 UNOP myop;
1067 1395
1396 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1397}
1398
1399/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1400static void ecb_noinline
1401cctx_prepare (pTHX)
1402{
1068 PL_top_env = &PL_start_env; 1403 PL_top_env = &PL_start_env;
1069 1404
1070 if (cctx->flags & CC_TRACE) 1405 if (cctx_current->flags & CC_TRACE)
1071 PL_runops = runops_trace; 1406 PL_runops = runops_trace;
1072 1407
1073 Zero (&myop, 1, UNOP); 1408 /* we already must be executing an SLF op, there is no other valid way
1074 myop.op_next = PL_op; 1409 * that can lead to creation of a new cctx */
1075 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1410 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1411 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1076 1412
1077 PUSHMARK (SP); 1413 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1078 EXTEND (SP, 2); 1414 cctx_ssl_frame = slf_frame;
1079 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1415
1080 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1416 slf_frame.prepare = slf_prepare_set_stacklevel;
1081 PUTBACK; 1417 slf_frame.check = slf_check_set_stacklevel;
1082 PL_op = (OP *)&myop;
1083 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1084 SPAGAIN;
1085} 1418}
1086 1419
1087/* the tail of transfer: execute stuff we can only do after a transfer */ 1420/* the tail of transfer: execute stuff we can only do after a transfer */
1088INLINE void 1421ecb_inline void
1089transfer_tail (pTHX) 1422transfer_tail (pTHX)
1090{ 1423{
1091 free_coro_mortal (aTHX); 1424 free_coro_mortal (aTHX);
1425}
1426
1427/* try to exit the same way perl's main function would do */
1428/* we do not bother resetting the environment or other things *7
1429/* that are not, uhm, essential */
1430/* this obviously also doesn't work when perl is embedded */
1431static void ecb_noinline ecb_cold
1432perlish_exit (pTHX)
1433{
1434 int exitstatus = perl_destruct (PL_curinterp);
1435 perl_free (PL_curinterp);
1436 exit (exitstatus);
1092} 1437}
1093 1438
1094/* 1439/*
1095 * this is a _very_ stripped down perl interpreter ;) 1440 * this is a _very_ stripped down perl interpreter ;)
1096 */ 1441 */
… …
1108 /* normally we would need to skip the entersub here */ 1453 /* normally we would need to skip the entersub here */
1109 /* not doing so will re-execute it, which is exactly what we want */ 1454 /* not doing so will re-execute it, which is exactly what we want */
1110 /* PL_nop = PL_nop->op_next */ 1455 /* PL_nop = PL_nop->op_next */
1111 1456
1112 /* inject a fake subroutine call to cctx_init */ 1457 /* inject a fake subroutine call to cctx_init */
1113 cctx_prepare (aTHX_ (coro_cctx *)arg); 1458 cctx_prepare (aTHX);
1114 1459
1115 /* cctx_run is the alternative tail of transfer() */ 1460 /* cctx_run is the alternative tail of transfer() */
1116 transfer_tail (aTHX); 1461 transfer_tail (aTHX);
1117 1462
1118 /* somebody or something will hit me for both perl_run and PL_restartop */ 1463 /* somebody or something will hit me for both perl_run and PL_restartop */
1119 PL_restartop = PL_op; 1464 PL_restartop = PL_op;
1120 perl_run (PL_curinterp); 1465 perl_run (PL_curinterp);
1466 /*
1467 * Unfortunately, there is no way to get at the return values of the
1468 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1469 * runtime errors here, as this is just a random interpreter, not a thread.
1470 */
1121 1471
1122 /* 1472 /*
1123 * If perl-run returns we assume exit() was being called or the coro 1473 * If perl-run returns we assume exit() was being called or the coro
1124 * fell off the end, which seems to be the only valid (non-bug) 1474 * fell off the end, which seems to be the only valid (non-bug)
1125 * reason for perl_run to return. We try to exit by jumping to the 1475 * reason for perl_run to return. We try to mimic whatever perl is normally
1126 * bootstrap-time "top" top_env, as we cannot restore the "main" 1476 * doing in that case. YMMV.
1127 * coroutine as Coro has no such concept
1128 */ 1477 */
1129 PL_top_env = main_top_env; 1478 perlish_exit (aTHX);
1130 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1131 } 1479 }
1132} 1480}
1133 1481
1134static coro_cctx * 1482static coro_cctx *
1135cctx_new () 1483cctx_new (void)
1136{ 1484{
1137 coro_cctx *cctx; 1485 coro_cctx *cctx;
1138 1486
1139 ++cctx_count; 1487 ++cctx_count;
1140 New (0, cctx, 1, coro_cctx); 1488 New (0, cctx, 1, coro_cctx);
… …
1146 return cctx; 1494 return cctx;
1147} 1495}
1148 1496
1149/* create a new cctx only suitable as source */ 1497/* create a new cctx only suitable as source */
1150static coro_cctx * 1498static coro_cctx *
1151cctx_new_empty () 1499cctx_new_empty (void)
1152{ 1500{
1153 coro_cctx *cctx = cctx_new (); 1501 coro_cctx *cctx = cctx_new ();
1154 1502
1155 cctx->sptr = 0; 1503 cctx->stack.sptr = 0;
1156 coro_create (&cctx->cctx, 0, 0, 0, 0); 1504 coro_create (&cctx->cctx, 0, 0, 0, 0);
1157 1505
1158 return cctx; 1506 return cctx;
1159} 1507}
1160 1508
1161/* create a new cctx suitable as destination/running a perl interpreter */ 1509/* create a new cctx suitable as destination/running a perl interpreter */
1162static coro_cctx * 1510static coro_cctx *
1163cctx_new_run () 1511cctx_new_run (void)
1164{ 1512{
1165 coro_cctx *cctx = cctx_new (); 1513 coro_cctx *cctx = cctx_new ();
1166 void *stack_start;
1167 size_t stack_size;
1168 1514
1169#if HAVE_MMAP 1515 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1170 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1171 /* mmap supposedly does allocate-on-write for us */
1172 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1173
1174 if (cctx->sptr != (void *)-1)
1175 {
1176 #if CORO_STACKGUARD
1177 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1178 #endif
1179 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1180 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1181 cctx->flags |= CC_MAPPED;
1182 } 1516 {
1183 else
1184#endif
1185 {
1186 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1187 New (0, cctx->sptr, cctx_stacksize, long);
1188
1189 if (!cctx->sptr)
1190 {
1191 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1517 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1192 _exit (EXIT_FAILURE); 1518 _exit (EXIT_FAILURE);
1193 }
1194
1195 stack_start = cctx->sptr;
1196 stack_size = cctx->ssize;
1197 } 1519 }
1198 1520
1199 #if CORO_USE_VALGRIND
1200 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1201 #endif
1202
1203 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1521 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1204 1522
1205 return cctx; 1523 return cctx;
1206} 1524}
1207 1525
1208static void 1526static void
1209cctx_destroy (coro_cctx *cctx) 1527cctx_destroy (coro_cctx *cctx)
1210{ 1528{
1211 if (!cctx) 1529 if (!cctx)
1212 return; 1530 return;
1213 1531
1532 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1533
1214 --cctx_count; 1534 --cctx_count;
1215 coro_destroy (&cctx->cctx); 1535 coro_destroy (&cctx->cctx);
1216 1536
1217 /* coro_transfer creates new, empty cctx's */ 1537 coro_stack_free (&cctx->stack);
1218 if (cctx->sptr)
1219 {
1220 #if CORO_USE_VALGRIND
1221 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1222 #endif
1223
1224#if HAVE_MMAP
1225 if (cctx->flags & CC_MAPPED)
1226 munmap (cctx->sptr, cctx->ssize);
1227 else
1228#endif
1229 Safefree (cctx->sptr);
1230 }
1231 1538
1232 Safefree (cctx); 1539 Safefree (cctx);
1233} 1540}
1234 1541
1235/* wether this cctx should be destructed */ 1542/* wether this cctx should be destructed */
1236#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1543#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1237 1544
1238static coro_cctx * 1545static coro_cctx *
1239cctx_get (pTHX) 1546cctx_get (pTHX)
1240{ 1547{
1241 while (expect_true (cctx_first)) 1548 while (ecb_expect_true (cctx_first))
1242 { 1549 {
1243 coro_cctx *cctx = cctx_first; 1550 coro_cctx *cctx = cctx_first;
1244 cctx_first = cctx->next; 1551 cctx_first = cctx->next;
1245 --cctx_idle; 1552 --cctx_idle;
1246 1553
1247 if (expect_true (!CCTX_EXPIRED (cctx))) 1554 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1248 return cctx; 1555 return cctx;
1249 1556
1250 cctx_destroy (cctx); 1557 cctx_destroy (cctx);
1251 } 1558 }
1252 1559
… …
1254} 1561}
1255 1562
1256static void 1563static void
1257cctx_put (coro_cctx *cctx) 1564cctx_put (coro_cctx *cctx)
1258{ 1565{
1259 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1566 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1260 1567
1261 /* free another cctx if overlimit */ 1568 /* free another cctx if overlimit */
1262 if (expect_false (cctx_idle >= cctx_max_idle)) 1569 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1263 { 1570 {
1264 coro_cctx *first = cctx_first; 1571 coro_cctx *first = cctx_first;
1265 cctx_first = first->next; 1572 cctx_first = first->next;
1266 --cctx_idle; 1573 --cctx_idle;
1267 1574
… …
1276/** coroutine switching *****************************************************/ 1583/** coroutine switching *****************************************************/
1277 1584
1278static void 1585static void
1279transfer_check (pTHX_ struct coro *prev, struct coro *next) 1586transfer_check (pTHX_ struct coro *prev, struct coro *next)
1280{ 1587{
1588 /* TODO: throwing up here is considered harmful */
1589
1281 if (expect_true (prev != next)) 1590 if (ecb_expect_true (prev != next))
1282 { 1591 {
1283 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1592 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1284 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); 1593 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1285 1594
1286 if (expect_false (next->flags & CF_RUNNING)) 1595 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1287 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1288
1289 if (expect_false (next->flags & CF_DESTROYED))
1290 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); 1596 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1291 1597
1292#if !PERL_VERSION_ATLEAST (5,10,0) 1598#if !PERL_VERSION_ATLEAST (5,10,0)
1293 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1599 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1294 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); 1600 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1295#endif 1601#endif
1296 } 1602 }
1297} 1603}
1298 1604
1299/* always use the TRANSFER macro */ 1605/* always use the TRANSFER macro */
1300static void NOINLINE 1606static void ecb_noinline /* noinline so we have a fixed stackframe */
1301transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1607transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1302{ 1608{
1303 dSTACKLEVEL; 1609 dSTACKLEVEL;
1304 1610
1305 /* sometimes transfer is only called to set idle_sp */ 1611 /* sometimes transfer is only called to set idle_sp */
1306 if (expect_false (!next)) 1612 if (ecb_expect_false (!prev))
1307 { 1613 {
1308 ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; 1614 cctx_current->idle_sp = STACKLEVEL;
1309 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1615 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1310 } 1616 }
1311 else if (expect_true (prev != next)) 1617 else if (ecb_expect_true (prev != next))
1312 { 1618 {
1313 coro_cctx *prev__cctx; 1619 coro_cctx *cctx_prev;
1314 1620
1315 if (expect_false (prev->flags & CF_NEW)) 1621 if (ecb_expect_false (prev->flags & CF_NEW))
1316 { 1622 {
1317 /* create a new empty/source context */ 1623 /* create a new empty/source context */
1318 prev->cctx = cctx_new_empty ();
1319 prev->flags &= ~CF_NEW; 1624 prev->flags &= ~CF_NEW;
1320 prev->flags |= CF_RUNNING; 1625 prev->flags |= CF_RUNNING;
1321 } 1626 }
1322 1627
1323 prev->flags &= ~CF_RUNNING; 1628 prev->flags &= ~CF_RUNNING;
1324 next->flags |= CF_RUNNING; 1629 next->flags |= CF_RUNNING;
1325 1630
1326 /* first get rid of the old state */ 1631 /* first get rid of the old state */
1327 save_perl (aTHX_ prev); 1632 save_perl (aTHX_ prev);
1328 1633
1329 if (expect_false (next->flags & CF_NEW)) 1634 if (ecb_expect_false (next->flags & CF_NEW))
1330 { 1635 {
1331 /* need to start coroutine */ 1636 /* need to start coroutine */
1332 next->flags &= ~CF_NEW; 1637 next->flags &= ~CF_NEW;
1333 /* setup coroutine call */ 1638 /* setup coroutine call */
1334 coro_setup (aTHX_ next); 1639 init_perl (aTHX_ next);
1335 } 1640 }
1336 else 1641 else
1337 load_perl (aTHX_ next); 1642 load_perl (aTHX_ next);
1338 1643
1339 prev__cctx = prev->cctx;
1340
1341 /* possibly untie and reuse the cctx */ 1644 /* possibly untie and reuse the cctx */
1342 if (expect_true ( 1645 if (ecb_expect_true (
1343 prev__cctx->idle_sp == (void *)stacklevel 1646 cctx_current->idle_sp == STACKLEVEL
1344 && !(prev__cctx->flags & CC_TRACE) 1647 && !(cctx_current->flags & CC_TRACE)
1345 && !force_cctx 1648 && !force_cctx
1346 )) 1649 ))
1347 { 1650 {
1348 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ 1651 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1349 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1652 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1350 1653
1351 prev->cctx = 0;
1352
1353 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1654 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1354 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1655 /* without this the next cctx_get might destroy the running cctx while still in use */
1355 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1656 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1356 if (!next->cctx) 1657 if (ecb_expect_true (!next->cctx))
1357 next->cctx = cctx_get (aTHX); 1658 next->cctx = cctx_get (aTHX);
1358 1659
1359 cctx_put (prev__cctx); 1660 cctx_put (cctx_current);
1360 } 1661 }
1662 else
1663 prev->cctx = cctx_current;
1361 1664
1362 ++next->usecount; 1665 ++next->usecount;
1363 1666
1364 if (expect_true (!next->cctx)) 1667 cctx_prev = cctx_current;
1365 next->cctx = cctx_get (aTHX); 1668 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1366 1669
1367 if (expect_false (prev__cctx != next->cctx)) 1670 next->cctx = 0;
1671
1672 if (ecb_expect_false (cctx_prev != cctx_current))
1368 { 1673 {
1369 prev__cctx->top_env = PL_top_env; 1674 cctx_prev->top_env = PL_top_env;
1370 PL_top_env = next->cctx->top_env; 1675 PL_top_env = cctx_current->top_env;
1371 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1676 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1372 } 1677 }
1373 1678
1374 transfer_tail (aTHX); 1679 transfer_tail (aTHX);
1375 } 1680 }
1376} 1681}
… …
1378#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1683#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1379#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1684#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1380 1685
1381/** high level stuff ********************************************************/ 1686/** high level stuff ********************************************************/
1382 1687
1688/* this function is actually Coro, not Coro::State, but we call it from here */
1689/* because it is convenient - but it hasn't been declared yet for that reason */
1383static int 1690static void
1691coro_call_on_destroy (pTHX_ struct coro *coro);
1692
1693static void
1384coro_state_destroy (pTHX_ struct coro *coro) 1694coro_state_destroy (pTHX_ struct coro *coro)
1385{ 1695{
1386 if (coro->flags & CF_DESTROYED) 1696 if (coro->flags & CF_ZOMBIE)
1387 return 0; 1697 return;
1388 1698
1389 if (coro->on_destroy)
1390 coro->on_destroy (aTHX_ coro); 1699 slf_destroy (aTHX_ coro);
1391 1700
1392 coro->flags |= CF_DESTROYED; 1701 coro->flags |= CF_ZOMBIE;
1393 1702
1394 if (coro->flags & CF_READY) 1703 if (coro->flags & CF_READY)
1395 { 1704 {
1396 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1705 /* reduce nready, as destroying a ready coro effectively unreadies it */
1397 /* alternative: look through all ready queues and remove the coro */ 1706 /* alternative: look through all ready queues and remove the coro */
1398 --coro_nready; 1707 --coro_nready;
1399 } 1708 }
1400 else 1709 else
1401 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1710 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1402 1711
1403 if (coro->mainstack && coro->mainstack != main_mainstack)
1404 {
1405 struct coro temp;
1406
1407 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1408
1409 save_perl (aTHX_ &temp);
1410 load_perl (aTHX_ coro);
1411
1412 coro_destruct (aTHX_ coro);
1413
1414 load_perl (aTHX_ &temp);
1415
1416 coro->slot = 0;
1417 }
1418
1419 cctx_destroy (coro->cctx);
1420 SvREFCNT_dec (coro->args);
1421
1422 if (coro->next) coro->next->prev = coro->prev; 1712 if (coro->next) coro->next->prev = coro->prev;
1423 if (coro->prev) coro->prev->next = coro->next; 1713 if (coro->prev) coro->prev->next = coro->next;
1424 if (coro == coro_first) coro_first = coro->next; 1714 if (coro == coro_first) coro_first = coro->next;
1425 1715
1426 return 1; 1716 if (coro->mainstack
1717 && coro->mainstack != main_mainstack
1718 && coro->slot
1719 && !PL_dirty)
1720 destroy_perl (aTHX_ coro);
1721
1722 cctx_destroy (coro->cctx);
1723 SvREFCNT_dec (coro->startcv);
1724 SvREFCNT_dec (coro->args);
1725 SvREFCNT_dec (coro->swap_sv);
1726 SvREFCNT_dec (CORO_THROW);
1727
1728 coro_call_on_destroy (aTHX_ coro);
1729
1730 /* more destruction mayhem in coro_state_free */
1427} 1731}
1428 1732
1429static int 1733static int
1430coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1734coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1431{ 1735{
1432 struct coro *coro = (struct coro *)mg->mg_ptr; 1736 struct coro *coro = (struct coro *)mg->mg_ptr;
1433 mg->mg_ptr = 0; 1737 mg->mg_ptr = 0;
1434 1738
1435 coro->hv = 0;
1436
1437 if (--coro->refcnt < 0)
1438 {
1439 coro_state_destroy (aTHX_ coro); 1739 coro_state_destroy (aTHX_ coro);
1740 SvREFCNT_dec (coro->on_destroy);
1741 SvREFCNT_dec (coro->status);
1742
1440 Safefree (coro); 1743 Safefree (coro);
1441 }
1442 1744
1443 return 0; 1745 return 0;
1444} 1746}
1445 1747
1446static int 1748static int ecb_cold
1447coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1749coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1448{ 1750{
1449 struct coro *coro = (struct coro *)mg->mg_ptr; 1751 /* called when perl clones the current process the slow way (windows process emulation) */
1450 1752 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1451 ++coro->refcnt; 1753 mg->mg_ptr = 0;
1754 mg->mg_virtual = 0;
1452 1755
1453 return 0; 1756 return 0;
1454} 1757}
1455 1758
1456static MGVTBL coro_state_vtbl = { 1759static MGVTBL coro_state_vtbl = {
… …
1481 TRANSFER (ta, 1); 1784 TRANSFER (ta, 1);
1482} 1785}
1483 1786
1484/** Coro ********************************************************************/ 1787/** Coro ********************************************************************/
1485 1788
1486INLINE void 1789ecb_inline void
1487coro_enq (pTHX_ struct coro *coro) 1790coro_enq (pTHX_ struct coro *coro)
1488{ 1791{
1489 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); 1792 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1490}
1491 1793
1492INLINE SV * 1794 SvREFCNT_inc_NN (coro->hv);
1795
1796 coro->next_ready = 0;
1797 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1798 ready [1] = coro;
1799}
1800
1801ecb_inline struct coro *
1493coro_deq (pTHX) 1802coro_deq (pTHX)
1494{ 1803{
1495 int prio; 1804 int prio;
1496 1805
1497 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1806 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1498 if (AvFILLp (coro_ready [prio]) >= 0) 1807 {
1499 return av_shift (coro_ready [prio]); 1808 struct coro **ready = coro_ready [prio];
1809
1810 if (ready [0])
1811 {
1812 struct coro *coro = ready [0];
1813 ready [0] = coro->next_ready;
1814 return coro;
1815 }
1816 }
1500 1817
1501 return 0; 1818 return 0;
1819}
1820
1821static void
1822invoke_sv_ready_hook_helper (void)
1823{
1824 dTHX;
1825 dSP;
1826
1827 ENTER;
1828 SAVETMPS;
1829
1830 PUSHMARK (SP);
1831 PUTBACK;
1832 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1833
1834 FREETMPS;
1835 LEAVE;
1502} 1836}
1503 1837
1504static int 1838static int
1505api_ready (pTHX_ SV *coro_sv) 1839api_ready (pTHX_ SV *coro_sv)
1506{ 1840{
1507 struct coro *coro;
1508 SV *sv_hook;
1509 void (*xs_hook)(void);
1510
1511 if (SvROK (coro_sv))
1512 coro_sv = SvRV (coro_sv);
1513
1514 coro = SvSTATE (coro_sv); 1841 struct coro *coro = SvSTATE (coro_sv);
1515 1842
1516 if (coro->flags & CF_READY) 1843 if (coro->flags & CF_READY)
1517 return 0; 1844 return 0;
1518 1845
1519 coro->flags |= CF_READY; 1846 coro->flags |= CF_READY;
1520 1847
1521 sv_hook = coro_nready ? 0 : coro_readyhook;
1522 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1523
1524 coro_enq (aTHX_ coro); 1848 coro_enq (aTHX_ coro);
1525 ++coro_nready;
1526 1849
1527 if (sv_hook) 1850 if (!coro_nready++)
1528 { 1851 if (coroapi.readyhook)
1529 dSP; 1852 coroapi.readyhook ();
1530
1531 ENTER;
1532 SAVETMPS;
1533
1534 PUSHMARK (SP);
1535 PUTBACK;
1536 call_sv (sv_hook, G_DISCARD);
1537 SPAGAIN;
1538
1539 FREETMPS;
1540 LEAVE;
1541 }
1542
1543 if (xs_hook)
1544 xs_hook ();
1545 1853
1546 return 1; 1854 return 1;
1547} 1855}
1548 1856
1549static int 1857static int
1550api_is_ready (pTHX_ SV *coro_sv) 1858api_is_ready (pTHX_ SV *coro_sv)
1551{ 1859{
1552 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1860 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1553} 1861}
1554 1862
1555INLINE void 1863/* expects to own a reference to next->hv */
1864ecb_inline void
1556prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1865prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1557{ 1866{
1558 SV *prev_sv, *next_sv;
1559
1560 for (;;)
1561 {
1562 next_sv = coro_deq (aTHX);
1563
1564 /* nothing to schedule: call the idle handler */
1565 if (expect_false (!next_sv))
1566 {
1567 dSP;
1568
1569 ENTER;
1570 SAVETMPS;
1571
1572 PUSHMARK (SP);
1573 PUTBACK;
1574 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1575 SPAGAIN;
1576
1577 FREETMPS;
1578 LEAVE;
1579 continue;
1580 }
1581
1582 ta->next = SvSTATE_hv (next_sv);
1583
1584 /* cannot transfer to destroyed coros, skip and look for next */
1585 if (expect_false (ta->next->flags & CF_DESTROYED))
1586 {
1587 SvREFCNT_dec (next_sv);
1588 /* coro_nready has already been taken care of by destroy */
1589 continue;
1590 }
1591
1592 --coro_nready;
1593 break;
1594 }
1595
1596 /* free this only after the transfer */
1597 prev_sv = SvRV (coro_current); 1867 SV *prev_sv = SvRV (coro_current);
1868
1598 ta->prev = SvSTATE_hv (prev_sv); 1869 ta->prev = SvSTATE_hv (prev_sv);
1870 ta->next = next;
1871
1599 TRANSFER_CHECK (*ta); 1872 TRANSFER_CHECK (*ta);
1600 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1873
1601 ta->next->flags &= ~CF_READY;
1602 SvRV_set (coro_current, next_sv); 1874 SvRV_set (coro_current, (SV *)next->hv);
1603 1875
1604 free_coro_mortal (aTHX); 1876 free_coro_mortal (aTHX);
1605 coro_mortal = prev_sv; 1877 coro_mortal = prev_sv;
1606} 1878}
1607 1879
1608INLINE void 1880static void
1881prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1882{
1883 for (;;)
1884 {
1885 struct coro *next = coro_deq (aTHX);
1886
1887 if (ecb_expect_true (next))
1888 {
1889 /* cannot transfer to destroyed coros, skip and look for next */
1890 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1891 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1892 else
1893 {
1894 next->flags &= ~CF_READY;
1895 --coro_nready;
1896
1897 prepare_schedule_to (aTHX_ ta, next);
1898 break;
1899 }
1900 }
1901 else
1902 {
1903 /* nothing to schedule: call the idle handler */
1904 if (SvROK (sv_idle)
1905 && SvOBJECT (SvRV (sv_idle)))
1906 {
1907 if (SvRV (sv_idle) == SvRV (coro_current))
1908 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1909
1910 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1911 api_ready (aTHX_ SvRV (sv_idle));
1912 --coro_nready;
1913 }
1914 else
1915 {
1916 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1917 dSP;
1918
1919 ENTER;
1920 SAVETMPS;
1921
1922 PUSHMARK (SP);
1923 PUTBACK;
1924 call_sv (sv_idle, G_VOID | G_DISCARD);
1925
1926 FREETMPS;
1927 LEAVE;
1928 }
1929 }
1930 }
1931}
1932
1933ecb_inline void
1609prepare_cede (pTHX_ struct coro_transfer_args *ta) 1934prepare_cede (pTHX_ struct coro_transfer_args *ta)
1610{ 1935{
1611 api_ready (aTHX_ coro_current); 1936 api_ready (aTHX_ coro_current);
1612 prepare_schedule (aTHX_ ta); 1937 prepare_schedule (aTHX_ ta);
1613} 1938}
1614 1939
1615INLINE void 1940ecb_inline void
1616prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1941prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1617{ 1942{
1618 SV *prev = SvRV (coro_current); 1943 SV *prev = SvRV (coro_current);
1619 1944
1620 if (coro_nready) 1945 if (coro_nready)
… …
1633 1958
1634 prepare_schedule (aTHX_ &ta); 1959 prepare_schedule (aTHX_ &ta);
1635 TRANSFER (ta, 1); 1960 TRANSFER (ta, 1);
1636} 1961}
1637 1962
1963static void
1964api_schedule_to (pTHX_ SV *coro_sv)
1965{
1966 struct coro_transfer_args ta;
1967 struct coro *next = SvSTATE (coro_sv);
1968
1969 SvREFCNT_inc_NN (coro_sv);
1970 prepare_schedule_to (aTHX_ &ta, next);
1971}
1972
1638static int 1973static int
1639api_cede (pTHX) 1974api_cede (pTHX)
1640{ 1975{
1641 struct coro_transfer_args ta; 1976 struct coro_transfer_args ta;
1642 1977
1643 prepare_cede (aTHX_ &ta); 1978 prepare_cede (aTHX_ &ta);
1644 1979
1645 if (expect_true (ta.prev != ta.next)) 1980 if (ecb_expect_true (ta.prev != ta.next))
1646 { 1981 {
1647 TRANSFER (ta, 1); 1982 TRANSFER (ta, 1);
1648 return 1; 1983 return 1;
1649 } 1984 }
1650 else 1985 else
… …
1669static void 2004static void
1670api_trace (pTHX_ SV *coro_sv, int flags) 2005api_trace (pTHX_ SV *coro_sv, int flags)
1671{ 2006{
1672 struct coro *coro = SvSTATE (coro_sv); 2007 struct coro *coro = SvSTATE (coro_sv);
1673 2008
2009 if (coro->flags & CF_RUNNING)
2010 croak ("cannot enable tracing on a running coroutine, caught");
2011
1674 if (flags & CC_TRACE) 2012 if (flags & CC_TRACE)
1675 { 2013 {
1676 if (!coro->cctx) 2014 if (!coro->cctx)
1677 coro->cctx = cctx_new_run (); 2015 coro->cctx = cctx_new_run ();
1678 else if (!(coro->cctx->flags & CC_TRACE)) 2016 else if (!(coro->cctx->flags & CC_TRACE))
1679 croak ("cannot enable tracing on coroutine with custom stack,"); 2017 croak ("cannot enable tracing on coroutine with custom stack, caught");
1680 2018
1681 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2019 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1682 } 2020 }
1683 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2021 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1684 { 2022 {
… …
1689 else 2027 else
1690 coro->slot->runops = RUNOPS_DEFAULT; 2028 coro->slot->runops = RUNOPS_DEFAULT;
1691 } 2029 }
1692} 2030}
1693 2031
2032static void
2033coro_push_av (pTHX_ AV *av, I32 gimme_v)
2034{
2035 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2036 {
2037 dSP;
2038
2039 if (gimme_v == G_SCALAR)
2040 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2041 else
2042 {
2043 int i;
2044 EXTEND (SP, AvFILLp (av) + 1);
2045
2046 for (i = 0; i <= AvFILLp (av); ++i)
2047 PUSHs (AvARRAY (av)[i]);
2048 }
2049
2050 PUTBACK;
2051 }
2052}
2053
2054static void
2055coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2056{
2057 if (!coro->on_destroy)
2058 coro->on_destroy = newAV ();
2059
2060 av_push (coro->on_destroy, cb);
2061}
2062
2063static void
2064slf_destroy_join (pTHX_ struct CoroSLF *frame)
2065{
2066 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2067}
2068
2069static int
2070slf_check_join (pTHX_ struct CoroSLF *frame)
2071{
2072 struct coro *coro = (struct coro *)frame->data;
2073
2074 if (!coro->status)
2075 return 1;
2076
2077 frame->destroy = 0;
2078
2079 coro_push_av (aTHX_ coro->status, GIMME_V);
2080
2081 SvREFCNT_dec ((SV *)coro->hv);
2082
2083 return 0;
2084}
2085
2086static void
2087slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2088{
2089 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
2090
2091 if (items > 1)
2092 croak ("join called with too many arguments");
2093
2094 if (coro->status)
2095 frame->prepare = prepare_nop;
2096 else
2097 {
2098 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2099 frame->prepare = prepare_schedule;
2100 }
2101
2102 frame->check = slf_check_join;
2103 frame->destroy = slf_destroy_join;
2104 frame->data = (void *)coro;
2105 SvREFCNT_inc (coro->hv);
2106}
2107
2108static void
2109coro_call_on_destroy (pTHX_ struct coro *coro)
2110{
2111 AV *od = coro->on_destroy;
2112
2113 if (!od)
2114 return;
2115
2116 coro->on_destroy = 0;
2117 sv_2mortal ((SV *)od);
2118
2119 while (AvFILLp (od) >= 0)
2120 {
2121 SV *cb = sv_2mortal (av_pop (od));
2122
2123 /* coro hv's (and only hv's at the moment) are supported as well */
2124 if (SvSTATEhv_p (aTHX_ cb))
2125 api_ready (aTHX_ cb);
2126 else
2127 {
2128 dSP; /* don't disturb outer sp */
2129 PUSHMARK (SP);
2130
2131 if (coro->status)
2132 {
2133 PUTBACK;
2134 coro_push_av (aTHX_ coro->status, G_ARRAY);
2135 SPAGAIN;
2136 }
2137
2138 PUTBACK;
2139 call_sv (cb, G_VOID | G_DISCARD);
2140 }
2141 }
2142}
2143
2144static void
2145coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2146{
2147 AV *av;
2148
2149 if (coro->status)
2150 {
2151 av = coro->status;
2152 av_clear (av);
2153 }
2154 else
2155 av = coro->status = newAV ();
2156
2157 /* items are actually not so common, so optimise for this case */
2158 if (items)
2159 {
2160 int i;
2161
2162 av_extend (av, items - 1);
2163
2164 for (i = 0; i < items; ++i)
2165 av_push (av, SvREFCNT_inc_NN (arg [i]));
2166 }
2167}
2168
2169static void
2170slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2171{
2172 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2173 api_ready (aTHX_ sv_manager);
2174
2175 frame->prepare = prepare_schedule;
2176 frame->check = slf_check_repeat;
2177
2178 /* as a minor optimisation, we could unwind all stacks here */
2179 /* but that puts extra pressure on pp_slf, and is not worth much */
2180 /*coro_unwind_stacks (aTHX);*/
2181}
2182
2183static void
2184slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2185{
2186 HV *coro_hv = (HV *)SvRV (coro_current);
2187
2188 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2189 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2190}
2191
2192static void
2193slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2194{
2195 HV *coro_hv;
2196 struct coro *coro;
2197
2198 if (items <= 0)
2199 croak ("Coro::cancel called without coro object,");
2200
2201 coro = SvSTATE (arg [0]);
2202 coro_hv = coro->hv;
2203
2204 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2205
2206 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2207 {
2208 /* coro currently busy cancelling something, so just notify it */
2209 coro->slf_frame.data = (void *)coro;
2210
2211 frame->prepare = prepare_nop;
2212 frame->check = slf_check_nop;
2213 }
2214 else if (coro_hv == (HV *)SvRV (coro_current))
2215 {
2216 /* cancelling the current coro is allowed, and equals terminate */
2217 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2218 }
2219 else
2220 {
2221 struct coro *self = SvSTATE_current;
2222
2223 /* otherwise we cancel directly, purely for speed reasons
2224 * unfortunately, this requires some magic trickery, as
2225 * somebody else could cancel us, so we have to fight the cancellation.
2226 * this is ugly, and hopefully fully worth the extra speed.
2227 * besides, I can't get the slow-but-safe version working...
2228 */
2229 slf_frame.data = 0;
2230 self->flags |= CF_NOCANCEL;
2231 coro_state_destroy (aTHX_ coro);
2232 self->flags &= ~CF_NOCANCEL;
2233
2234 if (slf_frame.data)
2235 {
2236 /* while we were busy we have been cancelled, so terminate */
2237 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2238 }
2239 else
2240 {
2241 frame->prepare = prepare_nop;
2242 frame->check = slf_check_nop;
2243 }
2244 }
2245}
2246
2247static int
2248slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2249{
2250 frame->prepare = 0;
2251 coro_unwind_stacks (aTHX);
2252
2253 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2254
2255 return 1;
2256}
2257
2258static int
2259safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2260{
2261 if (coro->cctx)
2262 croak ("coro inside C callback, unable to cancel at this time, caught");
2263
2264 if (coro->flags & CF_NEW)
2265 {
2266 coro_set_status (aTHX_ coro, arg, items);
2267 coro_state_destroy (aTHX_ coro);
2268 }
2269 else
2270 {
2271 if (!coro->slf_frame.prepare)
2272 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2273
2274 slf_destroy (aTHX_ coro);
2275
2276 coro_set_status (aTHX_ coro, arg, items);
2277 coro->slf_frame.prepare = prepare_nop;
2278 coro->slf_frame.check = slf_check_safe_cancel;
2279
2280 api_ready (aTHX_ (SV *)coro->hv);
2281 }
2282
2283 return 1;
2284}
2285
2286/*****************************************************************************/
2287/* async pool handler */
2288
2289static int
2290slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2291{
2292 HV *hv = (HV *)SvRV (coro_current);
2293 struct coro *coro = (struct coro *)frame->data;
2294
2295 if (!coro->invoke_cb)
2296 return 1; /* loop till we have invoke */
2297 else
2298 {
2299 hv_store (hv, "desc", sizeof ("desc") - 1,
2300 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2301
2302 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2303
2304 {
2305 dSP;
2306 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2307 PUTBACK;
2308 }
2309
2310 SvREFCNT_dec (GvAV (PL_defgv));
2311 GvAV (PL_defgv) = coro->invoke_av;
2312 coro->invoke_av = 0;
2313
2314 return 0;
2315 }
2316}
2317
2318static void
2319slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2320{
2321 HV *hv = (HV *)SvRV (coro_current);
2322 struct coro *coro = SvSTATE_hv ((SV *)hv);
2323
2324 if (ecb_expect_true (coro->saved_deffh))
2325 {
2326 /* subsequent iteration */
2327 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2328 coro->saved_deffh = 0;
2329
2330 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2331 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2332 {
2333 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2334 return;
2335 }
2336 else
2337 {
2338 av_clear (GvAV (PL_defgv));
2339 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2340
2341 coro->prio = 0;
2342
2343 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2344 api_trace (aTHX_ coro_current, 0);
2345
2346 frame->prepare = prepare_schedule;
2347 av_push (av_async_pool, SvREFCNT_inc (hv));
2348 }
2349 }
2350 else
2351 {
2352 /* first iteration, simply fall through */
2353 frame->prepare = prepare_nop;
2354 }
2355
2356 frame->check = slf_check_pool_handler;
2357 frame->data = (void *)coro;
2358}
2359
2360/*****************************************************************************/
2361/* rouse callback */
2362
2363#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2364
2365static void
2366coro_rouse_callback (pTHX_ CV *cv)
2367{
2368 dXSARGS;
2369 SV *data = (SV *)S_GENSUB_ARG;
2370
2371 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2372 {
2373 /* first call, set args */
2374 SV *coro = SvRV (data);
2375 AV *av = newAV ();
2376
2377 SvRV_set (data, (SV *)av);
2378
2379 /* better take a full copy of the arguments */
2380 while (items--)
2381 av_store (av, items, newSVsv (ST (items)));
2382
2383 api_ready (aTHX_ coro);
2384 SvREFCNT_dec (coro);
2385 }
2386
2387 XSRETURN_EMPTY;
2388}
2389
2390static int
2391slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2392{
2393 SV *data = (SV *)frame->data;
2394
2395 if (CORO_THROW)
2396 return 0;
2397
2398 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2399 return 1;
2400
2401 /* now push all results on the stack */
2402 {
2403 dSP;
2404 AV *av = (AV *)SvRV (data);
2405 int i;
2406
2407 EXTEND (SP, AvFILLp (av) + 1);
2408 for (i = 0; i <= AvFILLp (av); ++i)
2409 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2410
2411 /* we have stolen the elements, so set length to zero and free */
2412 AvFILLp (av) = -1;
2413 av_undef (av);
2414
2415 PUTBACK;
2416 }
2417
2418 return 0;
2419}
2420
2421static void
2422slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2423{
2424 SV *cb;
2425
2426 if (items)
2427 cb = arg [0];
2428 else
2429 {
2430 struct coro *coro = SvSTATE_current;
2431
2432 if (!coro->rouse_cb)
2433 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2434
2435 cb = sv_2mortal (coro->rouse_cb);
2436 coro->rouse_cb = 0;
2437 }
2438
2439 if (!SvROK (cb)
2440 || SvTYPE (SvRV (cb)) != SVt_PVCV
2441 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2442 croak ("Coro::rouse_wait called with illegal callback argument,");
2443
2444 {
2445 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2446 SV *data = (SV *)S_GENSUB_ARG;
2447
2448 frame->data = (void *)data;
2449 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2450 frame->check = slf_check_rouse_wait;
2451 }
2452}
2453
2454static SV *
2455coro_new_rouse_cb (pTHX)
2456{
2457 HV *hv = (HV *)SvRV (coro_current);
2458 struct coro *coro = SvSTATE_hv (hv);
2459 SV *data = newRV_inc ((SV *)hv);
2460 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2461
2462 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2463 SvREFCNT_dec (data); /* magicext increases the refcount */
2464
2465 SvREFCNT_dec (coro->rouse_cb);
2466 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2467
2468 return cb;
2469}
2470
2471/*****************************************************************************/
2472/* schedule-like-function opcode (SLF) */
2473
2474static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2475static const CV *slf_cv;
2476static SV **slf_argv;
2477static int slf_argc, slf_arga; /* count, allocated */
2478static I32 slf_ax; /* top of stack, for restore */
2479
2480/* this restores the stack in the case we patched the entersub, to */
2481/* recreate the stack frame as perl will on following calls */
2482/* since entersub cleared the stack */
2483static OP *
2484pp_restore (pTHX)
2485{
2486 int i;
2487 SV **SP = PL_stack_base + slf_ax;
2488
2489 PUSHMARK (SP);
2490
2491 EXTEND (SP, slf_argc + 1);
2492
2493 for (i = 0; i < slf_argc; ++i)
2494 PUSHs (sv_2mortal (slf_argv [i]));
2495
2496 PUSHs ((SV *)CvGV (slf_cv));
2497
2498 RETURNOP (slf_restore.op_first);
2499}
2500
2501static void
2502slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2503{
2504 SV **arg = (SV **)slf_frame.data;
2505
2506 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2507}
2508
2509static void
2510slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2511{
2512 if (items != 2)
2513 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2514
2515 frame->prepare = slf_prepare_transfer;
2516 frame->check = slf_check_nop;
2517 frame->data = (void *)arg; /* let's hope it will stay valid */
2518}
2519
2520static void
2521slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2522{
2523 frame->prepare = prepare_schedule;
2524 frame->check = slf_check_nop;
2525}
2526
2527static void
2528slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2529{
2530 struct coro *next = (struct coro *)slf_frame.data;
2531
2532 SvREFCNT_inc_NN (next->hv);
2533 prepare_schedule_to (aTHX_ ta, next);
2534}
2535
2536static void
2537slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2538{
2539 if (!items)
2540 croak ("Coro::schedule_to expects a coroutine argument, caught");
2541
2542 frame->data = (void *)SvSTATE (arg [0]);
2543 frame->prepare = slf_prepare_schedule_to;
2544 frame->check = slf_check_nop;
2545}
2546
2547static void
2548slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549{
2550 api_ready (aTHX_ SvRV (coro_current));
2551
2552 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2553}
2554
2555static void
2556slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2557{
2558 frame->prepare = prepare_cede;
2559 frame->check = slf_check_nop;
2560}
2561
2562static void
2563slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2564{
2565 frame->prepare = prepare_cede_notself;
2566 frame->check = slf_check_nop;
2567}
2568
2569/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2570static void
2571slf_destroy (pTHX_ struct coro *coro)
2572{
2573 /* this callback is reserved for slf functions needing to do cleanup */
2574 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2575 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2576
2577 /*
2578 * The on_destroy above most likely is from an SLF call.
2579 * Since by definition the SLF call will not finish when we destroy
2580 * the coro, we will have to force-finish it here, otherwise
2581 * cleanup functions cannot call SLF functions.
2582 */
2583 coro->slf_frame.prepare = 0;
2584}
2585
2586/*
2587 * these not obviously related functions are all rolled into one
2588 * function to increase chances that they all will call transfer with the same
2589 * stack offset
2590 * SLF stands for "schedule-like-function".
2591 */
2592static OP *
2593pp_slf (pTHX)
2594{
2595 I32 checkmark; /* mark SP to see how many elements check has pushed */
2596
2597 /* set up the slf frame, unless it has already been set-up */
2598 /* the latter happens when a new coro has been started */
2599 /* or when a new cctx was attached to an existing coroutine */
2600 if (ecb_expect_true (!slf_frame.prepare))
2601 {
2602 /* first iteration */
2603 dSP;
2604 SV **arg = PL_stack_base + TOPMARK + 1;
2605 int items = SP - arg; /* args without function object */
2606 SV *gv = *sp;
2607
2608 /* do a quick consistency check on the "function" object, and if it isn't */
2609 /* for us, divert to the real entersub */
2610 if (SvTYPE (gv) != SVt_PVGV
2611 || !GvCV (gv)
2612 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2613 return PL_ppaddr[OP_ENTERSUB](aTHX);
2614
2615 if (!(PL_op->op_flags & OPf_STACKED))
2616 {
2617 /* ampersand-form of call, use @_ instead of stack */
2618 AV *av = GvAV (PL_defgv);
2619 arg = AvARRAY (av);
2620 items = AvFILLp (av) + 1;
2621 }
2622
2623 /* now call the init function, which needs to set up slf_frame */
2624 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2625 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2626
2627 /* pop args */
2628 SP = PL_stack_base + POPMARK;
2629
2630 PUTBACK;
2631 }
2632
2633 /* now that we have a slf_frame, interpret it! */
2634 /* we use a callback system not to make the code needlessly */
2635 /* complicated, but so we can run multiple perl coros from one cctx */
2636
2637 do
2638 {
2639 struct coro_transfer_args ta;
2640
2641 slf_frame.prepare (aTHX_ &ta);
2642 TRANSFER (ta, 0);
2643
2644 checkmark = PL_stack_sp - PL_stack_base;
2645 }
2646 while (slf_frame.check (aTHX_ &slf_frame));
2647
2648 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2649
2650 /* exception handling */
2651 if (ecb_expect_false (CORO_THROW))
2652 {
2653 SV *exception = sv_2mortal (CORO_THROW);
2654
2655 CORO_THROW = 0;
2656 sv_setsv (ERRSV, exception);
2657 croak (0);
2658 }
2659
2660 /* return value handling - mostly like entersub */
2661 /* make sure we put something on the stack in scalar context */
2662 if (GIMME_V == G_SCALAR
2663 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2664 {
2665 dSP;
2666 SV **bot = PL_stack_base + checkmark;
2667
2668 if (sp == bot) /* too few, push undef */
2669 bot [1] = &PL_sv_undef;
2670 else /* too many, take last one */
2671 bot [1] = *sp;
2672
2673 SP = bot + 1;
2674
2675 PUTBACK;
2676 }
2677
2678 return NORMAL;
2679}
2680
2681static void
2682api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2683{
2684 int i;
2685 SV **arg = PL_stack_base + ax;
2686 int items = PL_stack_sp - arg + 1;
2687
2688 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2689
2690 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2691 && PL_op->op_ppaddr != pp_slf)
2692 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2693
2694 CvFLAGS (cv) |= CVf_SLF;
2695 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2696 slf_cv = cv;
2697
2698 /* we patch the op, and then re-run the whole call */
2699 /* we have to put the same argument on the stack for this to work */
2700 /* and this will be done by pp_restore */
2701 slf_restore.op_next = (OP *)&slf_restore;
2702 slf_restore.op_type = OP_CUSTOM;
2703 slf_restore.op_ppaddr = pp_restore;
2704 slf_restore.op_first = PL_op;
2705
2706 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2707
2708 if (PL_op->op_flags & OPf_STACKED)
2709 {
2710 if (items > slf_arga)
2711 {
2712 slf_arga = items;
2713 Safefree (slf_argv);
2714 New (0, slf_argv, slf_arga, SV *);
2715 }
2716
2717 slf_argc = items;
2718
2719 for (i = 0; i < items; ++i)
2720 slf_argv [i] = SvREFCNT_inc (arg [i]);
2721 }
2722 else
2723 slf_argc = 0;
2724
2725 PL_op->op_ppaddr = pp_slf;
2726 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2727
2728 PL_op = (OP *)&slf_restore;
2729}
2730
2731/*****************************************************************************/
2732/* dynamic wind */
2733
2734static void
2735on_enterleave_call (pTHX_ SV *cb)
2736{
2737 dSP;
2738
2739 PUSHSTACK;
2740
2741 PUSHMARK (SP);
2742 PUTBACK;
2743 call_sv (cb, G_VOID | G_DISCARD);
2744 SPAGAIN;
2745
2746 POPSTACK;
2747}
2748
2749static SV *
2750coro_avp_pop_and_free (pTHX_ AV **avp)
2751{
2752 AV *av = *avp;
2753 SV *res = av_pop (av);
2754
2755 if (AvFILLp (av) < 0)
2756 {
2757 *avp = 0;
2758 SvREFCNT_dec (av);
2759 }
2760
2761 return res;
2762}
2763
2764static void
2765coro_pop_on_enter (pTHX_ void *coro)
2766{
2767 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2768 SvREFCNT_dec (cb);
2769}
2770
2771static void
2772coro_pop_on_leave (pTHX_ void *coro)
2773{
2774 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2775 on_enterleave_call (aTHX_ sv_2mortal (cb));
2776}
2777
1694/*****************************************************************************/ 2778/*****************************************************************************/
1695/* PerlIO::cede */ 2779/* PerlIO::cede */
1696 2780
1697typedef struct 2781typedef struct
1698{ 2782{
1699 PerlIOBuf base; 2783 PerlIOBuf base;
1700 NV next, every; 2784 NV next, every;
1701} PerlIOCede; 2785} PerlIOCede;
1702 2786
1703static IV 2787static IV ecb_cold
1704PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2788PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1705{ 2789{
1706 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2790 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1707 2791
1708 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2792 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1709 self->next = nvtime () + self->every; 2793 self->next = nvtime () + self->every;
1710 2794
1711 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2795 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1712} 2796}
1713 2797
1714static SV * 2798static SV * ecb_cold
1715PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2799PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1716{ 2800{
1717 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2801 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1718 2802
1719 return newSVnv (self->every); 2803 return newSVnv (self->every);
… …
1765 PerlIOBuf_get_cnt, 2849 PerlIOBuf_get_cnt,
1766 PerlIOBuf_set_ptrcnt, 2850 PerlIOBuf_set_ptrcnt,
1767}; 2851};
1768 2852
1769/*****************************************************************************/ 2853/*****************************************************************************/
2854/* Coro::Semaphore & Coro::Signal */
1770 2855
1771static const CV *slf_cv; /* for quick consistency check */
1772
1773static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1774static SV *slf_arg0;
1775static SV *slf_arg1;
1776static SV *slf_arg2;
1777
1778/* this restores the stack in the case we patched the entersub, to */
1779/* recreate the stack frame as perl will on following calls */
1780/* since entersub cleared the stack */
1781static OP * 2856static SV *
1782pp_restore (pTHX) 2857coro_waitarray_new (pTHX_ int count)
1783{ 2858{
1784 dSP; 2859 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2860 AV *av = newAV ();
2861 SV **ary;
1785 2862
1786 PUSHMARK (SP); 2863 /* unfortunately, building manually saves memory */
2864 Newx (ary, 2, SV *);
2865 AvALLOC (av) = ary;
2866#if PERL_VERSION_ATLEAST (5,10,0)
2867 AvARRAY (av) = ary;
2868#else
2869 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2870 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2871 SvPVX ((SV *)av) = (char *)ary;
2872#endif
2873 AvMAX (av) = 1;
2874 AvFILLp (av) = 0;
2875 ary [0] = newSViv (count);
1787 2876
1788 EXTEND (SP, 3); 2877 return newRV_noinc ((SV *)av);
1789 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1790 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1791 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1792 PUSHs ((SV *)CvGV (slf_cv));
1793
1794 RETURNOP (slf_restore.op_first);
1795} 2878}
1796 2879
1797static void 2880/* semaphore */
1798slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1799{
1800 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1801}
1802
1803static void
1804slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1805{
1806 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1));
1807
1808 frame->prepare = slf_prepare_set_stacklevel;
1809 frame->check = slf_check_nop;
1810 frame->data = (void *)SvIV (arg [0]);
1811}
1812
1813static void
1814slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1815{
1816 SV **arg = (SV **)slf_frame.data;
1817
1818 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1819
1820 /* if the destination has ->throw set, then copy it */
1821 /* into the current coro's throw slot, so it will be raised */
1822 /* after the schedule */
1823 if (expect_false (ta->next->throw))
1824 {
1825 struct coro *coro = SvSTATE_current;
1826 SvREFCNT_dec (coro->throw);
1827 coro->throw = ta->next->throw;
1828 ta->next->throw = 0;
1829 }
1830}
1831
1832static void
1833slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1834{
1835 if (items != 2)
1836 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1837
1838 frame->prepare = slf_prepare_transfer;
1839 frame->check = slf_check_nop;
1840 frame->data = (void *)arg; /* let's hope it will stay valid */
1841}
1842
1843static void
1844slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1845{
1846 frame->prepare = prepare_schedule;
1847 frame->check = slf_check_nop;
1848}
1849
1850static void
1851slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1852{
1853 frame->prepare = prepare_cede;
1854 frame->check = slf_check_nop;
1855}
1856
1857static void
1858slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1859{
1860 frame->prepare = prepare_cede_notself;
1861 frame->check = slf_check_nop;
1862}
1863
1864/* we hijack an hopefully unused CV flag for our purposes */
1865#define CVf_SLF 0x4000
1866
1867/*
1868 * these not obviously related functions are all rolled into one
1869 * function to increase chances that they all will call transfer with the same
1870 * stack offset
1871 * SLF stands for "schedule-like-function".
1872 */
1873static OP *
1874pp_slf (pTHX)
1875{
1876 I32 checkmark; /* mark SP to see how many elements check has pushed */
1877
1878 /* set up the slf frame, unless it has already been set-up */
1879 /* the latter happens when a new coro has been started */
1880 /* or when a new cctx was attached to an existing coroutine */
1881 if (expect_true (!slf_frame.prepare))
1882 {
1883 /* first iteration */
1884 dSP;
1885 SV **arg = PL_stack_base + TOPMARK + 1;
1886 int items = SP - arg; /* args without function object */
1887 SV *gv = *sp;
1888
1889 /* do a quick consistency check on the "function" object, and if it isn't */
1890 /* for us, divert to the real entersub */
1891 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1892 return PL_ppaddr[OP_ENTERSUB](aTHX);
1893
1894 if (!(PL_op->op_flags & OPf_STACKED))
1895 {
1896 /* ampersand-form of call, use @_ instead of stack */
1897 AV *av = GvAV (PL_defgv);
1898 arg = AvARRAY (av);
1899 items = AvFILLp (av) + 1;
1900 }
1901
1902 PUTBACK;
1903
1904 /* now call the init function, which needs to set up slf_frame */
1905 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1906 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1907
1908 /* pop args */
1909 SP = PL_stack_base + POPMARK;
1910
1911 PUTBACK;
1912 }
1913
1914 /* now that we have a slf_frame, interpret it! */
1915 /* we use a callback system not to make the code needlessly */
1916 /* complicated, but so we can run multiple perl coros from one cctx */
1917
1918 do
1919 {
1920 struct coro_transfer_args ta;
1921
1922 slf_frame.prepare (aTHX_ &ta);
1923 TRANSFER (ta, 0);
1924
1925 checkmark = PL_stack_sp - PL_stack_base;
1926 }
1927 while (slf_frame.check (aTHX_ &slf_frame));
1928
1929 {
1930 dSP;
1931 SV **bot = PL_stack_base + checkmark;
1932 int gimme = GIMME_V;
1933
1934 slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */
1935
1936 /* make sure we put something on the stack in scalar context */
1937 if (gimme == G_SCALAR)
1938 {
1939 if (sp == bot)
1940 XPUSHs (&PL_sv_undef);
1941
1942 SP = bot + 1;
1943 }
1944
1945 PUTBACK;
1946 }
1947
1948 {
1949 struct coro *coro = SvSTATE_current;
1950
1951 if (expect_false (coro->throw))
1952 {
1953 SV *exception = sv_2mortal (coro->throw);
1954
1955 coro->throw = 0;
1956 sv_setsv (ERRSV, exception);
1957 croak (0);
1958 }
1959 }
1960
1961 return NORMAL;
1962}
1963
1964static void
1965api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items)
1966{
1967 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
1968
1969 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1970 && PL_op->op_ppaddr != pp_slf)
1971 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1972
1973 if (items > 3)
1974 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1975
1976 CvFLAGS (cv) |= CVf_SLF;
1977 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1978 slf_cv = cv;
1979
1980 /* we patch the op, and then re-run the whole call */
1981 /* we have to put the same argument on the stack for this to work */
1982 /* and this will be done by pp_restore */
1983 slf_restore.op_next = (OP *)&slf_restore;
1984 slf_restore.op_type = OP_CUSTOM;
1985 slf_restore.op_ppaddr = pp_restore;
1986 slf_restore.op_first = PL_op;
1987
1988 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
1989 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
1990 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
1991
1992 PL_op->op_ppaddr = pp_slf;
1993
1994 PL_op = (OP *)&slf_restore;
1995}
1996
1997/*****************************************************************************/
1998 2881
1999static void 2882static void
2000coro_semaphore_adjust (pTHX_ AV *av, IV adjust) 2883coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2001{ 2884{
2002 SV *count_sv = AvARRAY (av)[0]; 2885 SV *count_sv = AvARRAY (av)[0];
… …
2014 AvARRAY (av)[0] = AvARRAY (av)[1]; 2897 AvARRAY (av)[0] = AvARRAY (av)[1];
2015 AvARRAY (av)[1] = count_sv; 2898 AvARRAY (av)[1] = count_sv;
2016 cb = av_shift (av); 2899 cb = av_shift (av);
2017 2900
2018 if (SvOBJECT (cb)) 2901 if (SvOBJECT (cb))
2902 {
2019 api_ready (aTHX_ cb); 2903 api_ready (aTHX_ cb);
2020 else 2904 --count;
2021 croak ("callbacks not yet supported"); 2905 }
2906 else if (SvTYPE (cb) == SVt_PVCV)
2907 {
2908 dSP;
2909 PUSHMARK (SP);
2910 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2911 PUTBACK;
2912 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2913 }
2022 2914
2023 SvREFCNT_dec (cb); 2915 SvREFCNT_dec (cb);
2024
2025 --count;
2026 } 2916 }
2027} 2917}
2028 2918
2029static void 2919static void
2030coro_semaphore_on_destroy (pTHX_ struct coro *coro) 2920coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2031{ 2921{
2032 /* call $sem->adjust (0) to possibly wake up some other waiters */ 2922 /* call $sem->adjust (0) to possibly wake up some other waiters */
2033 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); 2923 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2034} 2924}
2035 2925
2036static int 2926static int
2037slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2927slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2038{ 2928{
2039 AV *av = (AV *)frame->data; 2929 AV *av = (AV *)frame->data;
2040 SV *count_sv = AvARRAY (av)[0]; 2930 SV *count_sv = AvARRAY (av)[0];
2931 SV *coro_hv = SvRV (coro_current);
2041 2932
2933 /* if we are about to throw, don't actually acquire the lock, just throw */
2934 if (CORO_THROW)
2935 return 0;
2042 if (SvIVX (count_sv) > 0) 2936 else if (SvIVX (count_sv) > 0)
2043 { 2937 {
2044 SvSTATE_current->on_destroy = 0; 2938 frame->destroy = 0;
2939
2940 if (acquire)
2045 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2941 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2942 else
2943 coro_semaphore_adjust (aTHX_ av, 0);
2944
2046 return 0; 2945 return 0;
2047 } 2946 }
2048 else 2947 else
2049 { 2948 {
2050 int i; 2949 int i;
2051 /* if we were woken up but can't down, we look through the whole */ 2950 /* if we were woken up but can't down, we look through the whole */
2052 /* waiters list and only add us if we aren't in there already */ 2951 /* waiters list and only add us if we aren't in there already */
2053 /* this avoids some degenerate memory usage cases */ 2952 /* this avoids some degenerate memory usage cases */
2054 2953 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2055 for (i = 1; i <= AvFILLp (av); ++i)
2056 if (AvARRAY (av)[i] == SvRV (coro_current)) 2954 if (AvARRAY (av)[i] == coro_hv)
2057 return 1; 2955 return 1;
2058 2956
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2957 av_push (av, SvREFCNT_inc (coro_hv));
2060 return 1; 2958 return 1;
2061 } 2959 }
2062} 2960}
2063 2961
2064static void 2962static int
2963slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2964{
2965 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2966}
2967
2968static int
2969slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2970{
2971 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2972}
2973
2974static void
2065slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) 2975slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2066{ 2976{
2067 AV *av = (AV *)SvRV (arg [0]); 2977 AV *av = (AV *)SvRV (arg [0]);
2068 2978
2069 if (SvIVX (AvARRAY (av)[0]) > 0) 2979 if (SvIVX (AvARRAY (av)[0]) > 0)
2070 { 2980 {
2071 frame->data = (void *)av; 2981 frame->data = (void *)av;
2072 frame->prepare = prepare_nop; 2982 frame->prepare = prepare_nop;
2073 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2074 } 2983 }
2075 else 2984 else
2076 { 2985 {
2077 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2986 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2078 2987
2079 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 2988 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2080 frame->prepare = prepare_schedule; 2989 frame->prepare = prepare_schedule;
2081
2082 /* to avoid race conditions when a woken-up coro gets terminated */ 2990 /* to avoid race conditions when a woken-up coro gets terminated */
2083 /* we arrange for a temporary on_destroy that calls adjust (0) */ 2991 /* we arrange for a temporary on_destroy that calls adjust (0) */
2084 assert (!SvSTATE_current->on_destroy);//D
2085 SvSTATE_current->on_destroy = coro_semaphore_on_destroy; 2992 frame->destroy = coro_semaphore_destroy;
2086 } 2993 }
2994}
2087 2995
2996static void
2997slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2998{
2999 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2088 frame->check = slf_check_semaphore_down; 3000 frame->check = slf_check_semaphore_down;
3001}
2089 3002
3003static void
3004slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3005{
3006 if (items >= 2)
3007 {
3008 /* callback form */
3009 AV *av = (AV *)SvRV (arg [0]);
3010 SV *cb_cv = s_get_cv_croak (arg [1]);
3011
3012 av_push (av, SvREFCNT_inc_NN (cb_cv));
3013
3014 if (SvIVX (AvARRAY (av)[0]) > 0)
3015 coro_semaphore_adjust (aTHX_ av, 0);
3016
3017 frame->prepare = prepare_nop;
3018 frame->check = slf_check_nop;
3019 }
3020 else
3021 {
3022 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3023 frame->check = slf_check_semaphore_wait;
3024 }
3025}
3026
3027/* signal */
3028
3029static void
3030coro_signal_wake (pTHX_ AV *av, int count)
3031{
3032 SvIVX (AvARRAY (av)[0]) = 0;
3033
3034 /* now signal count waiters */
3035 while (count > 0 && AvFILLp (av) > 0)
3036 {
3037 SV *cb;
3038
3039 /* swap first two elements so we can shift a waiter */
3040 cb = AvARRAY (av)[0];
3041 AvARRAY (av)[0] = AvARRAY (av)[1];
3042 AvARRAY (av)[1] = cb;
3043
3044 cb = av_shift (av);
3045
3046 if (SvTYPE (cb) == SVt_PVCV)
3047 {
3048 dSP;
3049 PUSHMARK (SP);
3050 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3051 PUTBACK;
3052 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3053 }
3054 else
3055 {
3056 api_ready (aTHX_ cb);
3057 sv_setiv (cb, 0); /* signal waiter */
3058 }
3059
3060 SvREFCNT_dec (cb);
3061
3062 --count;
3063 }
3064}
3065
3066static int
3067slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3068{
3069 /* if we are about to throw, also stop waiting */
3070 return SvROK ((SV *)frame->data) && !CORO_THROW;
3071}
3072
3073static void
3074slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3075{
3076 AV *av = (AV *)SvRV (arg [0]);
3077
3078 if (items >= 2)
3079 {
3080 SV *cb_cv = s_get_cv_croak (arg [1]);
3081 av_push (av, SvREFCNT_inc_NN (cb_cv));
3082
3083 if (SvIVX (AvARRAY (av)[0]))
3084 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3085
3086 frame->prepare = prepare_nop;
3087 frame->check = slf_check_nop;
3088 }
3089 else if (SvIVX (AvARRAY (av)[0]))
3090 {
3091 SvIVX (AvARRAY (av)[0]) = 0;
3092 frame->prepare = prepare_nop;
3093 frame->check = slf_check_nop;
3094 }
3095 else
3096 {
3097 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3098
3099 av_push (av, waiter);
3100
3101 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3102 frame->prepare = prepare_schedule;
3103 frame->check = slf_check_signal_wait;
3104 }
2090} 3105}
2091 3106
2092/*****************************************************************************/ 3107/*****************************************************************************/
3108/* Coro::AIO */
2093 3109
2094#define GENSUB_ARG CvXSUBANY (cv).any_ptr 3110#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2095 3111
2096/* create a closure from XS, returns a code reference */ 3112/* helper storage struct */
2097/* the arg can be accessed via GENSUB_ARG from the callback */ 3113struct io_state
2098/* the callback must use dXSARGS/XSRETURN */ 3114{
3115 int errorno;
3116 I32 laststype; /* U16 in 5.10.0 */
3117 int laststatval;
3118 Stat_t statcache;
3119};
3120
3121static void
3122coro_aio_callback (pTHX_ CV *cv)
3123{
3124 dXSARGS;
3125 AV *state = (AV *)S_GENSUB_ARG;
3126 SV *coro = av_pop (state);
3127 SV *data_sv = newSV (sizeof (struct io_state));
3128
3129 av_extend (state, items - 1);
3130
3131 sv_upgrade (data_sv, SVt_PV);
3132 SvCUR_set (data_sv, sizeof (struct io_state));
3133 SvPOK_only (data_sv);
3134
3135 {
3136 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3137
3138 data->errorno = errno;
3139 data->laststype = PL_laststype;
3140 data->laststatval = PL_laststatval;
3141 data->statcache = PL_statcache;
3142 }
3143
3144 /* now build the result vector out of all the parameters and the data_sv */
3145 {
3146 int i;
3147
3148 for (i = 0; i < items; ++i)
3149 av_push (state, SvREFCNT_inc_NN (ST (i)));
3150 }
3151
3152 av_push (state, data_sv);
3153
3154 api_ready (aTHX_ coro);
3155 SvREFCNT_dec (coro);
3156 SvREFCNT_dec ((AV *)state);
3157}
3158
3159static int
3160slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3161{
3162 AV *state = (AV *)frame->data;
3163
3164 /* if we are about to throw, return early */
3165 /* this does not cancel the aio request, but at least */
3166 /* it quickly returns */
3167 if (CORO_THROW)
3168 return 0;
3169
3170 /* one element that is an RV? repeat! */
3171 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3172 return 1;
3173
3174 /* restore status */
3175 {
3176 SV *data_sv = av_pop (state);
3177 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3178
3179 errno = data->errorno;
3180 PL_laststype = data->laststype;
3181 PL_laststatval = data->laststatval;
3182 PL_statcache = data->statcache;
3183
3184 SvREFCNT_dec (data_sv);
3185 }
3186
3187 /* push result values */
3188 {
3189 dSP;
3190 int i;
3191
3192 EXTEND (SP, AvFILLp (state) + 1);
3193 for (i = 0; i <= AvFILLp (state); ++i)
3194 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3195
3196 PUTBACK;
3197 }
3198
3199 return 0;
3200}
3201
3202static void
3203slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3204{
3205 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3206 SV *coro_hv = SvRV (coro_current);
3207 struct coro *coro = SvSTATE_hv (coro_hv);
3208
3209 /* put our coroutine id on the state arg */
3210 av_push (state, SvREFCNT_inc_NN (coro_hv));
3211
3212 /* first see whether we have a non-zero priority and set it as AIO prio */
3213 if (coro->prio)
3214 {
3215 dSP;
3216
3217 static SV *prio_cv;
3218 static SV *prio_sv;
3219
3220 if (ecb_expect_false (!prio_cv))
3221 {
3222 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3223 prio_sv = newSViv (0);
3224 }
3225
3226 PUSHMARK (SP);
3227 sv_setiv (prio_sv, coro->prio);
3228 XPUSHs (prio_sv);
3229
3230 PUTBACK;
3231 call_sv (prio_cv, G_VOID | G_DISCARD);
3232 }
3233
3234 /* now call the original request */
3235 {
3236 dSP;
3237 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3238 int i;
3239
3240 PUSHMARK (SP);
3241
3242 /* first push all args to the stack */
3243 EXTEND (SP, items + 1);
3244
3245 for (i = 0; i < items; ++i)
3246 PUSHs (arg [i]);
3247
3248 /* now push the callback closure */
3249 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3250
3251 /* now call the AIO function - we assume our request is uncancelable */
3252 PUTBACK;
3253 call_sv ((SV *)req, G_VOID | G_DISCARD);
3254 }
3255
3256 /* now that the request is going, we loop till we have a result */
3257 frame->data = (void *)state;
3258 frame->prepare = prepare_schedule;
3259 frame->check = slf_check_aio_req;
3260}
3261
3262static void
3263coro_aio_req_xs (pTHX_ CV *cv)
3264{
3265 dXSARGS;
3266
3267 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3268
3269 XSRETURN_EMPTY;
3270}
3271
3272/*****************************************************************************/
3273
3274#if CORO_CLONE
3275# include "clone.c"
3276#endif
3277
3278/*****************************************************************************/
3279
2099static SV * 3280static SV *
2100gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) 3281coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
2101{ 3282{
2102 CV *cv = (CV *)NEWSV (0, 0); 3283 SV *coro_sv;
3284 struct coro *coro;
3285 MAGIC *mg;
3286 HV *hv;
3287 SV *cb;
3288 int i;
2103 3289
2104 sv_upgrade ((SV *)cv, SVt_PVCV); 3290 if (argc > 0)
3291 {
3292 cb = s_get_cv_croak (argv [0]);
2105 3293
2106 CvANON_on (cv); 3294 if (!is_coro)
2107 CvISXSUB_on (cv); 3295 {
2108 CvXSUB (cv) = xsub; 3296 if (CvISXSUB (cb))
2109 GENSUB_ARG = arg; 3297 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2110 3298
2111 return newRV_noinc ((SV *)cv); 3299 if (!CvROOT (cb))
2112} 3300 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3301 }
3302 }
2113 3303
2114/*****************************************************************************/ 3304 Newz (0, coro, 1, struct coro);
3305 coro->args = newAV ();
3306 coro->flags = CF_NEW;
3307
3308 if (coro_first) coro_first->prev = coro;
3309 coro->next = coro_first;
3310 coro_first = coro;
3311
3312 coro->hv = hv = newHV ();
3313 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3314 mg->mg_flags |= MGf_DUP;
3315 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3316
3317 if (argc > 0)
3318 {
3319 av_extend (coro->args, argc + is_coro - 1);
3320
3321 if (is_coro)
3322 {
3323 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3324 cb = (SV *)cv_coro_run;
3325 }
3326
3327 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3328
3329 for (i = 1; i < argc; i++)
3330 av_push (coro->args, newSVsv (argv [i]));
3331 }
3332
3333 return coro_sv;
3334}
3335
3336#ifndef __cplusplus
3337ecb_cold XS(boot_Coro__State);
3338#endif
3339
3340#if CORO_JIT
3341
3342static void ecb_noinline ecb_cold
3343pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
3344{
3345 dSP;
3346 AV *av = newAV ();
3347
3348 av_store (av, 3, newSVuv (d));
3349 av_store (av, 2, newSVuv (c));
3350 av_store (av, 1, newSVuv (b));
3351 av_store (av, 0, newSVuv (a));
3352
3353 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3354
3355 PUTBACK;
3356}
3357
3358static void ecb_noinline ecb_cold
3359jit_init (pTHX)
3360{
3361 dSP;
3362 SV *load, *save;
3363 char *map_base;
3364 char *load_ptr, *save_ptr;
3365 STRLEN load_len, save_len, map_len;
3366 int count;
3367
3368 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
3369
3370 PUSHMARK (SP);
3371 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3372 #include "state.h"
3373 count = call_pv ("Coro::State::_jit", G_ARRAY);
3374 SPAGAIN;
3375
3376 save = POPs; save_ptr = SvPVbyte (save, save_len);
3377 load = POPs; load_ptr = SvPVbyte (load, load_len);
3378
3379 map_len = load_len + save_len + 16;
3380
3381 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3382
3383 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3384
3385 load_perl_slots = (load_save_perl_slots_type)map_base;
3386 memcpy (map_base, load_ptr, load_len);
3387
3388 map_base += (load_len + 15) & ~15;
3389
3390 save_perl_slots = (load_save_perl_slots_type)map_base;
3391 memcpy (map_base, save_ptr, save_len);
3392
3393 /* we are good citizens and try to make the page read-only, so the evil evil */
3394 /* hackers might have it a bit more difficult */
3395 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3396
3397 PUTBACK;
3398 eval_pv ("undef &Coro::State::_jit", 1);
3399}
3400
3401#endif
2115 3402
2116MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3403MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2117 3404
2118PROTOTYPES: DISABLE 3405PROTOTYPES: DISABLE
2119 3406
… …
2122#ifdef USE_ITHREADS 3409#ifdef USE_ITHREADS
2123# if CORO_PTHREAD 3410# if CORO_PTHREAD
2124 coro_thx = PERL_GET_CONTEXT; 3411 coro_thx = PERL_GET_CONTEXT;
2125# endif 3412# endif
2126#endif 3413#endif
2127 BOOT_PAGESIZE; 3414 /* perl defines these to check for existance first, but why it doesn't */
3415 /* just create them one at init time is not clear to me, except for */
3416 /* programs trying to delete them, but... */
3417 /* anyway, we declare this as invalid and make sure they are initialised here */
3418 DEFSV;
3419 ERRSV;
3420
3421 cctx_current = cctx_new_empty ();
2128 3422
2129 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3423 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2130 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3424 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2131 3425
2132 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3426 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
2152 3446
2153 { 3447 {
2154 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); 3448 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2155 3449
2156 if (!PL_custom_op_names) PL_custom_op_names = newHV (); 3450 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2157 hv_store_ent (PL_custom_op_names, slf, 3451 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2158 newSVpv ("coro_slf", 0), 0);
2159 3452
2160 if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); 3453 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2161 hv_store_ent (PL_custom_op_descs, slf, 3454 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2162 newSVpv ("coro schedule like function", 0), 0);
2163 } 3455 }
2164 3456
2165 coroapi.ver = CORO_API_VERSION; 3457 coroapi.ver = CORO_API_VERSION;
2166 coroapi.rev = CORO_API_REVISION; 3458 coroapi.rev = CORO_API_REVISION;
2167 3459
… …
2172 coroapi.prepare_nop = prepare_nop; 3464 coroapi.prepare_nop = prepare_nop;
2173 coroapi.prepare_schedule = prepare_schedule; 3465 coroapi.prepare_schedule = prepare_schedule;
2174 coroapi.prepare_cede = prepare_cede; 3466 coroapi.prepare_cede = prepare_cede;
2175 coroapi.prepare_cede_notself = prepare_cede_notself; 3467 coroapi.prepare_cede_notself = prepare_cede_notself;
2176 3468
2177 { 3469 time_init (aTHX);
2178 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2179 3470
2180 if (!svp) croak ("Time::HiRes is required");
2181 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2182
2183 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2184 }
2185
2186 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3471 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3472#if CORO_JIT
3473 PUTBACK;
3474 jit_init (aTHX);
3475 SPAGAIN;
3476#endif
2187} 3477}
2188 3478
2189SV * 3479SV *
2190new (char *klass, ...) 3480new (SV *klass, ...)
3481 ALIAS:
3482 Coro::new = 1
2191 CODE: 3483 CODE:
2192{ 3484 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2193 struct coro *coro; 3485 OUTPUT:
2194 MAGIC *mg;
2195 HV *hv;
2196 int i;
2197
2198 Newz (0, coro, 1, struct coro);
2199 coro->args = newAV ();
2200 coro->flags = CF_NEW;
2201
2202 if (coro_first) coro_first->prev = coro;
2203 coro->next = coro_first;
2204 coro_first = coro;
2205
2206 coro->hv = hv = newHV ();
2207 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2208 mg->mg_flags |= MGf_DUP;
2209 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2210
2211 av_extend (coro->args, items - 1);
2212 for (i = 1; i < items; i++)
2213 av_push (coro->args, newSVsv (ST (i)));
2214}
2215 OUTPUT:
2216 RETVAL 3486 RETVAL
2217
2218void
2219_set_stacklevel (...)
2220 CODE:
2221 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2222 3487
2223void 3488void
2224transfer (...) 3489transfer (...)
2225 PROTOTYPE: $$ 3490 PROTOTYPE: $$
2226 CODE: 3491 CODE:
2227 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3492 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2228 3493
2229bool 3494SV *
2230_destroy (SV *coro_sv) 3495clone (Coro::State coro)
2231 CODE: 3496 CODE:
2232 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 3497{
3498#if CORO_CLONE
3499 struct coro *ncoro = coro_clone (aTHX_ coro);
3500 MAGIC *mg;
3501 /* TODO: too much duplication */
3502 ncoro->hv = newHV ();
3503 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3504 mg->mg_flags |= MGf_DUP;
3505 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3506#else
3507 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3508#endif
3509}
2233 OUTPUT: 3510 OUTPUT:
2234 RETVAL 3511 RETVAL
2235
2236void
2237_exit (int code)
2238 PROTOTYPE: $
2239 CODE:
2240 _exit (code);
2241 3512
2242int 3513int
2243cctx_stacksize (int new_stacksize = 0) 3514cctx_stacksize (int new_stacksize = 0)
2244 PROTOTYPE: ;$ 3515 PROTOTYPE: ;$
2245 CODE: 3516 CODE:
… …
2281void 3552void
2282list () 3553list ()
2283 PROTOTYPE: 3554 PROTOTYPE:
2284 PPCODE: 3555 PPCODE:
2285{ 3556{
2286 struct coro *coro; 3557 struct coro *coro;
2287 for (coro = coro_first; coro; coro = coro->next) 3558 for (coro = coro_first; coro; coro = coro->next)
2288 if (coro->hv) 3559 if (coro->hv)
2289 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3560 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2290} 3561}
2291 3562
… …
2295 eval = 1 3566 eval = 1
2296 CODE: 3567 CODE:
2297{ 3568{
2298 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3569 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2299 { 3570 {
2300 struct coro temp; 3571 struct coro *current = SvSTATE_current;
3572 struct CoroSLF slf_save;
2301 3573
2302 if (!(coro->flags & CF_RUNNING)) 3574 if (current != coro)
2303 { 3575 {
2304 PUTBACK; 3576 PUTBACK;
2305 save_perl (aTHX_ &temp); 3577 save_perl (aTHX_ current);
2306 load_perl (aTHX_ coro); 3578 load_perl (aTHX_ coro);
3579 /* the coro is most likely in an active SLF call.
3580 * while not strictly required (the code we execute is
3581 * not allowed to call any SLF functions), it's cleaner
3582 * to reinitialise the slf_frame and restore it later.
3583 * This might one day allow us to actually do SLF calls
3584 * from code executed here.
3585 */
3586 slf_save = slf_frame;
3587 slf_frame.prepare = 0;
3588 SPAGAIN;
2307 } 3589 }
2308 3590
2309 {
2310 dSP;
2311 ENTER;
2312 SAVETMPS;
2313 PUTBACK;
2314 PUSHSTACK; 3591 PUSHSTACK;
3592
2315 PUSHMARK (SP); 3593 PUSHMARK (SP);
3594 PUTBACK;
2316 3595
2317 if (ix) 3596 if (ix)
2318 eval_sv (coderef, 0); 3597 eval_sv (coderef, 0);
2319 else 3598 else
2320 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3599 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2321 3600
2322 POPSTACK; 3601 POPSTACK;
2323 SPAGAIN; 3602 SPAGAIN;
2324 FREETMPS;
2325 LEAVE;
2326 PUTBACK;
2327 }
2328 3603
2329 if (!(coro->flags & CF_RUNNING)) 3604 if (current != coro)
2330 { 3605 {
3606 PUTBACK;
3607 slf_frame = slf_save;
2331 save_perl (aTHX_ coro); 3608 save_perl (aTHX_ coro);
2332 load_perl (aTHX_ &temp); 3609 load_perl (aTHX_ current);
2333 SPAGAIN; 3610 SPAGAIN;
2334 } 3611 }
2335 } 3612 }
2336} 3613}
2337 3614
… …
2340 PROTOTYPE: $ 3617 PROTOTYPE: $
2341 ALIAS: 3618 ALIAS:
2342 is_ready = CF_READY 3619 is_ready = CF_READY
2343 is_running = CF_RUNNING 3620 is_running = CF_RUNNING
2344 is_new = CF_NEW 3621 is_new = CF_NEW
2345 is_destroyed = CF_DESTROYED 3622 is_destroyed = CF_ZOMBIE
3623 is_zombie = CF_ZOMBIE
3624 is_suspended = CF_SUSPENDED
2346 CODE: 3625 CODE:
2347 RETVAL = boolSV (coro->flags & ix); 3626 RETVAL = boolSV (coro->flags & ix);
2348 OUTPUT: 3627 OUTPUT:
2349 RETVAL 3628 RETVAL
2350 3629
2351void 3630void
2352throw (Coro::State self, SV *throw = &PL_sv_undef) 3631throw (SV *self, SV *exception = &PL_sv_undef)
2353 PROTOTYPE: $;$ 3632 PROTOTYPE: $;$
2354 CODE: 3633 CODE:
3634{
3635 struct coro *coro = SvSTATE (self);
3636 struct coro *current = SvSTATE_current;
3637 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2355 SvREFCNT_dec (self->throw); 3638 SvREFCNT_dec (*exceptionp);
2356 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3639 SvGETMAGIC (exception);
3640 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3641
3642 api_ready (aTHX_ self);
3643}
2357 3644
2358void 3645void
2359api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3646api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2360 PROTOTYPE: $;$ 3647 PROTOTYPE: $;$
2361 C_ARGS: aTHX_ coro, flags 3648 C_ARGS: aTHX_ coro, flags
2362 3649
2363SV * 3650SV *
2364has_cctx (Coro::State coro) 3651has_cctx (Coro::State coro)
2365 PROTOTYPE: $ 3652 PROTOTYPE: $
2366 CODE: 3653 CODE:
2367 RETVAL = boolSV (!!coro->cctx); 3654 /* maybe manage the running flag differently */
3655 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2368 OUTPUT: 3656 OUTPUT:
2369 RETVAL 3657 RETVAL
2370 3658
2371int 3659int
2372is_traced (Coro::State coro) 3660is_traced (Coro::State coro)
… …
2392 3680
2393void 3681void
2394force_cctx () 3682force_cctx ()
2395 PROTOTYPE: 3683 PROTOTYPE:
2396 CODE: 3684 CODE:
2397 SvSTATE_current->cctx->idle_sp = 0; 3685 cctx_current->idle_sp = 0;
2398 3686
2399void 3687void
2400swap_defsv (Coro::State self) 3688swap_defsv (Coro::State self)
2401 PROTOTYPE: $ 3689 PROTOTYPE: $
2402 ALIAS: 3690 ALIAS:
… …
2410 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3698 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2411 3699
2412 SV *tmp = *src; *src = *dst; *dst = tmp; 3700 SV *tmp = *src; *src = *dst; *dst = tmp;
2413 } 3701 }
2414 3702
3703void
3704cancel (Coro::State self)
3705 CODE:
3706 coro_state_destroy (aTHX_ self);
3707
3708SV *
3709enable_times (int enabled = enable_times)
3710 CODE:
3711{
3712 RETVAL = boolSV (enable_times);
3713
3714 if (enabled != enable_times)
3715 {
3716 enable_times = enabled;
3717
3718 coro_times_update ();
3719 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3720 }
3721}
3722 OUTPUT:
3723 RETVAL
3724
3725void
3726times (Coro::State self)
3727 PPCODE:
3728{
3729 struct coro *current = SvSTATE (coro_current);
3730
3731 if (ecb_expect_false (current == self))
3732 {
3733 coro_times_update ();
3734 coro_times_add (SvSTATE (coro_current));
3735 }
3736
3737 EXTEND (SP, 2);
3738 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3739 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3740
3741 if (ecb_expect_false (current == self))
3742 coro_times_sub (SvSTATE (coro_current));
3743}
3744
3745void
3746swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3747 CODE:
3748{
3749 struct coro *current = SvSTATE_current;
3750
3751 if (current == coro)
3752 SWAP_SVS (current);
3753
3754 if (!coro->swap_sv)
3755 coro->swap_sv = newAV ();
3756
3757 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3758 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3759
3760 if (current == coro)
3761 SWAP_SVS (current);
3762}
3763
3764
2415MODULE = Coro::State PACKAGE = Coro 3765MODULE = Coro::State PACKAGE = Coro
2416 3766
2417BOOT: 3767BOOT:
2418{ 3768{
2419 int i;
2420
2421 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2422 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3769 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2423 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3770 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2424 3771 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2425 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3772 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2426 SvREADONLY_on (coro_current); 3773 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3774 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3775 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3776 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3777
3778 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3779 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3780 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3781 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2427 3782
2428 coro_stash = gv_stashpv ("Coro", TRUE); 3783 coro_stash = gv_stashpv ("Coro", TRUE);
2429 3784
2430 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3785 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2431 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3786 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2432 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3787 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2433 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3788 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2434 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3789 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2435 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3790 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2436
2437 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2438 coro_ready[i] = newAV ();
2439 3791
2440 { 3792 {
2441 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3793 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2442 3794
2443 coroapi.schedule = api_schedule; 3795 coroapi.schedule = api_schedule;
3796 coroapi.schedule_to = api_schedule_to;
2444 coroapi.cede = api_cede; 3797 coroapi.cede = api_cede;
2445 coroapi.cede_notself = api_cede_notself; 3798 coroapi.cede_notself = api_cede_notself;
2446 coroapi.ready = api_ready; 3799 coroapi.ready = api_ready;
2447 coroapi.is_ready = api_is_ready; 3800 coroapi.is_ready = api_is_ready;
2448 coroapi.nready = coro_nready; 3801 coroapi.nready = coro_nready;
2449 coroapi.current = coro_current; 3802 coroapi.current = coro_current;
2450 3803
2451 GCoroAPI = &coroapi; 3804 /*GCoroAPI = &coroapi;*/
2452 sv_setiv (sv, (IV)&coroapi); 3805 sv_setiv (sv, (IV)&coroapi);
2453 SvREADONLY_on (sv); 3806 SvREADONLY_on (sv);
2454 } 3807 }
2455} 3808}
2456 3809
3810SV *
3811async (...)
3812 PROTOTYPE: &@
3813 CODE:
3814 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3815 api_ready (aTHX_ RETVAL);
3816 OUTPUT:
3817 RETVAL
3818
3819void
3820_destroy (Coro::State coro)
3821 CODE:
3822 /* used by the manager thread */
3823 coro_state_destroy (aTHX_ coro);
3824
3825void
3826on_destroy (Coro::State coro, SV *cb)
3827 CODE:
3828 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3829
3830void
3831join (...)
3832 CODE:
3833 CORO_EXECUTE_SLF_XS (slf_init_join);
3834
3835void
3836terminate (...)
3837 CODE:
3838 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3839
3840void
3841cancel (...)
3842 CODE:
3843 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3844
3845int
3846safe_cancel (Coro::State self, ...)
3847 C_ARGS: aTHX_ self, &ST (1), items - 1
3848
2457void 3849void
2458schedule (...) 3850schedule (...)
2459 CODE: 3851 CODE:
2460 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 3852 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3853
3854void
3855schedule_to (...)
3856 CODE:
3857 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3858
3859void
3860cede_to (...)
3861 CODE:
3862 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
2461 3863
2462void 3864void
2463cede (...) 3865cede (...)
2464 CODE: 3866 CODE:
2465 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3867 CORO_EXECUTE_SLF_XS (slf_init_cede);
2466 3868
2467void 3869void
2468cede_notself (...) 3870cede_notself (...)
2469 CODE: 3871 CODE:
2470 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3872 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2471 3873
2472void 3874void
2473_set_current (SV *current) 3875_set_current (SV *current)
2474 PROTOTYPE: $ 3876 PROTOTYPE: $
2475 CODE: 3877 CODE:
… …
2479void 3881void
2480_set_readyhook (SV *hook) 3882_set_readyhook (SV *hook)
2481 PROTOTYPE: $ 3883 PROTOTYPE: $
2482 CODE: 3884 CODE:
2483 SvREFCNT_dec (coro_readyhook); 3885 SvREFCNT_dec (coro_readyhook);
3886 SvGETMAGIC (hook);
3887 if (SvOK (hook))
3888 {
2484 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3889 coro_readyhook = newSVsv (hook);
3890 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3891 }
3892 else
3893 {
3894 coro_readyhook = 0;
3895 CORO_READYHOOK = 0;
3896 }
2485 3897
2486int 3898int
2487prio (Coro::State coro, int newprio = 0) 3899prio (Coro::State coro, int newprio = 0)
2488 PROTOTYPE: $;$ 3900 PROTOTYPE: $;$
2489 ALIAS: 3901 ALIAS:
… …
2495 if (items > 1) 3907 if (items > 1)
2496 { 3908 {
2497 if (ix) 3909 if (ix)
2498 newprio = coro->prio - newprio; 3910 newprio = coro->prio - newprio;
2499 3911
2500 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3912 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2501 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3913 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2502 3914
2503 coro->prio = newprio; 3915 coro->prio = newprio;
2504 } 3916 }
2505} 3917}
2506 OUTPUT: 3918 OUTPUT:
… …
2520 CODE: 3932 CODE:
2521 RETVAL = coro_nready; 3933 RETVAL = coro_nready;
2522 OUTPUT: 3934 OUTPUT:
2523 RETVAL 3935 RETVAL
2524 3936
2525# for async_pool speedup
2526void 3937void
2527_pool_1 (SV *cb) 3938suspend (Coro::State self)
3939 PROTOTYPE: $
2528 CODE: 3940 CODE:
2529{ 3941 self->flags |= CF_SUSPENDED;
2530 HV *hv = (HV *)SvRV (coro_current);
2531 struct coro *coro = SvSTATE_hv ((SV *)hv);
2532 AV *defav = GvAV (PL_defgv);
2533 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2534 AV *invoke_av;
2535 int i, len;
2536 3942
2537 if (!invoke) 3943void
3944resume (Coro::State self)
3945 PROTOTYPE: $
3946 CODE:
3947 self->flags &= ~CF_SUSPENDED;
3948
3949void
3950_pool_handler (...)
3951 CODE:
3952 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3953
3954void
3955async_pool (SV *cv, ...)
3956 PROTOTYPE: &@
3957 PPCODE:
3958{
3959 HV *hv = (HV *)av_pop (av_async_pool);
3960 AV *av = newAV ();
3961 SV *cb = ST (0);
3962 int i;
3963
3964 av_extend (av, items - 2);
3965 for (i = 1; i < items; ++i)
3966 av_push (av, SvREFCNT_inc_NN (ST (i)));
3967
3968 if ((SV *)hv == &PL_sv_undef)
2538 { 3969 {
2539 SV *old = PL_diehook; 3970 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2540 PL_diehook = 0; 3971 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2541 SvREFCNT_dec (old); 3972 SvREFCNT_dec (sv);
2542 croak ("\3async_pool terminate\2\n");
2543 } 3973 }
2544 3974
2545 SvREFCNT_dec (coro->saved_deffh);
2546 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2547
2548 hv_store (hv, "desc", sizeof ("desc") - 1,
2549 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2550
2551 invoke_av = (AV *)SvRV (invoke);
2552 len = av_len (invoke_av);
2553
2554 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2555
2556 if (len > 0)
2557 { 3975 {
2558 av_fill (defav, len - 1); 3976 struct coro *coro = SvSTATE_hv (hv);
2559 for (i = 0; i < len; ++i) 3977
2560 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3978 assert (!coro->invoke_cb);
3979 assert (!coro->invoke_av);
3980 coro->invoke_cb = SvREFCNT_inc (cb);
3981 coro->invoke_av = av;
2561 } 3982 }
3983
3984 api_ready (aTHX_ (SV *)hv);
3985
3986 if (GIMME_V != G_VOID)
3987 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3988 else
3989 SvREFCNT_dec (hv);
2562} 3990}
3991
3992SV *
3993rouse_cb ()
3994 PROTOTYPE:
3995 CODE:
3996 RETVAL = coro_new_rouse_cb (aTHX);
3997 OUTPUT:
3998 RETVAL
2563 3999
2564void 4000void
2565_pool_2 (SV *cb) 4001rouse_wait (...)
4002 PROTOTYPE: ;$
4003 PPCODE:
4004 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
4005
4006void
4007on_enter (SV *block)
4008 ALIAS:
4009 on_leave = 1
4010 PROTOTYPE: &
2566 CODE: 4011 CODE:
2567{ 4012{
2568 struct coro *coro = SvSTATE_current; 4013 struct coro *coro = SvSTATE_current;
4014 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2569 4015
2570 sv_setsv (cb, &PL_sv_undef); 4016 block = s_get_cv_croak (block);
2571 4017
2572 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 4018 if (!*avp)
2573 coro->saved_deffh = 0;
2574
2575 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2576 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2577 {
2578 SV *old = PL_diehook;
2579 PL_diehook = 0;
2580 SvREFCNT_dec (old);
2581 croak ("\3async_pool terminate\2\n");
2582 }
2583
2584 av_clear (GvAV (PL_defgv));
2585 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2586 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2587
2588 coro->prio = 0;
2589
2590 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2591 api_trace (aTHX_ coro_current, 0);
2592
2593 av_push (av_async_pool, newSVsv (coro_current));
2594}
2595
2596
2597MODULE = Coro::State PACKAGE = Coro::AIO
2598
2599void
2600_get_state (SV *self)
2601 PROTOTYPE: $
2602 PPCODE:
2603{
2604 AV *defav = GvAV (PL_defgv);
2605 AV *av = newAV (); 4019 *avp = newAV ();
2606 int i;
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2609 SvCUR_set (data_sv, sizeof (struct io_state));
2610 SvPOK_only (data_sv);
2611 4020
2612 data->errorno = errno; 4021 av_push (*avp, SvREFCNT_inc (block));
2613 data->laststype = PL_laststype;
2614 data->laststatval = PL_laststatval;
2615 data->statcache = PL_statcache;
2616 4022
2617 av_extend (av, AvFILLp (defav) + 1 + 1); 4023 if (!ix)
4024 on_enterleave_call (aTHX_ block);
2618 4025
2619 for (i = 0; i <= AvFILLp (defav); ++i) 4026 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2620 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 4027 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
2621 4028 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
2622 av_push (av, data_sv);
2623
2624 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2625
2626 api_ready (aTHX_ self);
2627}
2628
2629void
2630_set_state (SV *state)
2631 PROTOTYPE: $
2632 PPCODE:
2633{
2634 AV *av = (AV *)SvRV (state);
2635 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2636 int i;
2637
2638 errno = data->errorno;
2639 PL_laststype = data->laststype;
2640 PL_laststatval = data->laststatval;
2641 PL_statcache = data->statcache;
2642
2643 EXTEND (SP, AvFILLp (av));
2644 for (i = 0; i < AvFILLp (av); ++i)
2645 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2646}
2647
2648
2649MODULE = Coro::State PACKAGE = Coro::AnyEvent
2650
2651BOOT:
2652 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2653
2654void
2655_schedule (...)
2656 CODE:
2657{
2658 static int incede;
2659
2660 api_cede_notself (aTHX);
2661
2662 ++incede;
2663 while (coro_nready >= incede && api_cede (aTHX))
2664 ;
2665
2666 sv_setsv (sv_activity, &PL_sv_undef);
2667 if (coro_nready >= incede)
2668 {
2669 PUSHMARK (SP);
2670 PUTBACK;
2671 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2672 SPAGAIN;
2673 }
2674
2675 --incede;
2676} 4029}
2677 4030
2678 4031
2679MODULE = Coro::State PACKAGE = PerlIO::cede 4032MODULE = Coro::State PACKAGE = PerlIO::cede
2680 4033
2681BOOT: 4034BOOT:
2682 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4035 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2683 4036
4037
2684MODULE = Coro::State PACKAGE = Coro::Semaphore 4038MODULE = Coro::State PACKAGE = Coro::Semaphore
2685 4039
2686SV * 4040SV *
2687new (SV *klass, SV *count_ = 0) 4041new (SV *klass, SV *count = 0)
2688 CODE: 4042 CODE:
2689{ 4043{
2690 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4044 int semcnt = 1;
2691 AV *av = newAV (); 4045
2692 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4046 if (count)
2693 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 4047 {
4048 SvGETMAGIC (count);
4049
4050 if (SvOK (count))
4051 semcnt = SvIV (count);
4052 }
4053
4054 RETVAL = sv_bless (
4055 coro_waitarray_new (aTHX_ semcnt),
4056 GvSTASH (CvGV (cv))
4057 );
2694} 4058}
4059 OUTPUT:
4060 RETVAL
4061
4062# helper for Coro::Channel and others
4063SV *
4064_alloc (int count)
4065 CODE:
4066 RETVAL = coro_waitarray_new (aTHX_ count);
2695 OUTPUT: 4067 OUTPUT:
2696 RETVAL 4068 RETVAL
2697 4069
2698SV * 4070SV *
2699count (SV *self) 4071count (SV *self)
… …
2708 adjust = 1 4080 adjust = 1
2709 CODE: 4081 CODE:
2710 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); 4082 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2711 4083
2712void 4084void
2713down (SV *self) 4085down (...)
2714 CODE: 4086 CODE:
2715 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4087 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4088
4089void
4090wait (...)
4091 CODE:
4092 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2716 4093
2717void 4094void
2718try (SV *self) 4095try (SV *self)
2719 PPCODE: 4096 PPCODE:
2720{ 4097{
… …
2732 XSRETURN_NO; 4109 XSRETURN_NO;
2733} 4110}
2734 4111
2735void 4112void
2736waiters (SV *self) 4113waiters (SV *self)
2737 CODE: 4114 PPCODE:
2738{ 4115{
2739 AV *av = (AV *)SvRV (self); 4116 AV *av = (AV *)SvRV (self);
4117 int wcount = AvFILLp (av) + 1 - 1;
2740 4118
2741 if (GIMME_V == G_SCALAR) 4119 if (GIMME_V == G_SCALAR)
2742 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4120 XPUSHs (sv_2mortal (newSViv (wcount)));
2743 else 4121 else
2744 { 4122 {
2745 int i; 4123 int i;
2746 EXTEND (SP, AvFILLp (av) + 1 - 1); 4124 EXTEND (SP, wcount);
2747 for (i = 1; i <= AvFILLp (av); ++i) 4125 for (i = 1; i <= wcount; ++i)
2748 PUSHs (newSVsv (AvARRAY (av)[i])); 4126 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2749 } 4127 }
2750} 4128}
2751 4129
4130MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4131
4132void
4133_may_delete (SV *sem, int count, unsigned int extra_refs)
4134 PPCODE:
4135{
4136 AV *av = (AV *)SvRV (sem);
4137
4138 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4139 && AvFILLp (av) == 0 /* no waiters, just count */
4140 && SvIV (AvARRAY (av)[0]) == count)
4141 XSRETURN_YES;
4142
4143 XSRETURN_NO;
4144}
4145
4146MODULE = Coro::State PACKAGE = Coro::Signal
4147
4148SV *
4149new (SV *klass)
4150 CODE:
4151 RETVAL = sv_bless (
4152 coro_waitarray_new (aTHX_ 0),
4153 GvSTASH (CvGV (cv))
4154 );
4155 OUTPUT:
4156 RETVAL
4157
4158void
4159wait (...)
4160 CODE:
4161 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4162
4163void
4164broadcast (SV *self)
4165 CODE:
4166{
4167 AV *av = (AV *)SvRV (self);
4168 coro_signal_wake (aTHX_ av, AvFILLp (av));
4169}
4170
4171void
4172send (SV *self)
4173 CODE:
4174{
4175 AV *av = (AV *)SvRV (self);
4176
4177 if (AvFILLp (av))
4178 coro_signal_wake (aTHX_ av, 1);
4179 else
4180 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4181}
4182
4183IV
4184awaited (SV *self)
4185 CODE:
4186 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4187 OUTPUT:
4188 RETVAL
4189
4190
4191MODULE = Coro::State PACKAGE = Coro::AnyEvent
4192
4193BOOT:
4194 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4195
4196void
4197_schedule (...)
4198 CODE:
4199{
4200 static int incede;
4201
4202 api_cede_notself (aTHX);
4203
4204 ++incede;
4205 while (coro_nready >= incede && api_cede (aTHX))
4206 ;
4207
4208 sv_setsv (sv_activity, &PL_sv_undef);
4209 if (coro_nready >= incede)
4210 {
4211 PUSHMARK (SP);
4212 PUTBACK;
4213 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4214 }
4215
4216 --incede;
4217}
4218
4219
4220MODULE = Coro::State PACKAGE = Coro::AIO
4221
4222void
4223_register (char *target, char *proto, SV *req)
4224 CODE:
4225{
4226 SV *req_cv = s_get_cv_croak (req);
4227 /* newXSproto doesn't return the CV on 5.8 */
4228 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4229 sv_setpv ((SV *)slf_cv, proto);
4230 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4231}
4232
4233MODULE = Coro::State PACKAGE = Coro::Select
4234
4235void
4236patch_pp_sselect ()
4237 CODE:
4238 if (!coro_old_pp_sselect)
4239 {
4240 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4241 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4242 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4243 }
4244
4245void
4246unpatch_pp_sselect ()
4247 CODE:
4248 if (coro_old_pp_sselect)
4249 {
4250 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4251 coro_old_pp_sselect = 0;
4252 }
4253
4254MODULE = Coro::State PACKAGE = Coro::Util
4255
4256void
4257_exit (int code)
4258 CODE:
4259 _exit (code);
4260
4261NV
4262time ()
4263 CODE:
4264 RETVAL = nvtime (aTHX);
4265 OUTPUT:
4266 RETVAL
4267
4268NV
4269gettimeofday ()
4270 PPCODE:
4271{
4272 UV tv [2];
4273 u2time (aTHX_ tv);
4274 EXTEND (SP, 2);
4275 PUSHs (sv_2mortal (newSVuv (tv [0])));
4276 PUSHs (sv_2mortal (newSVuv (tv [1])));
4277}
4278

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