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Comparing Coro/Coro/State.xs (file contents):
Revision 1.265 by root, Fri Nov 14 02:42:26 2008 UTC vs.
Revision 1.438 by root, Mon Nov 18 10:27:53 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/* 5.19.something has replaced SVt_BIND by SVt_INVLIST */
48/* we just alias it to SVt_IV, as that is sufficient for swap_sv for now */
49#if PERL_VERSION_ATLEAST(5,19,0)
50# define SVt_BIND SVt_IV
51#endif
52
53#if defined(_WIN32)
54# undef HAS_GETTIMEOFDAY
18# undef setjmp 55# undef setjmp
19# undef longjmp 56# undef longjmp
20# undef _exit 57# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 58# define setjmp _setjmp /* deep magic */
22#else 59#else
23# include <inttypes.h> /* most portable stdint.h */ 60# include <inttypes.h> /* most portable stdint.h */
24#endif 61#endif
25 62
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 */ 63/* the maximum number of idle cctx that will be pooled */
54static int cctx_max_idle = 4; 64static int cctx_max_idle = 4;
55 65
56#define PERL_VERSION_ATLEAST(a,b,c) \ 66#if defined(DEBUGGING) && PERL_VERSION_ATLEAST(5,12,0)
57 (PERL_REVISION > (a) \ 67# 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 68#endif
113 69
114/* prefer perl internal functions over our own? */ 70/* prefer perl internal functions over our own? */
115#ifndef CORO_PREFER_PERL_FUNCTIONS 71#ifndef CORO_PREFER_PERL_FUNCTIONS
116# define CORO_PREFER_PERL_FUNCTIONS 0 72# define CORO_PREFER_PERL_FUNCTIONS 0
117#endif 73#endif
118 74
119/* The next macros try to return the current stack pointer, in an as 75/* The next macros try to return the current stack pointer, in an as
120 * portable way as possible. */ 76 * portable way as possible. */
121#define dSTACKLEVEL volatile char stacklevel
122#define STACKLEVEL ((void *)&stacklevel)
123
124#define IN_DESTRUCT (PL_main_cv == Nullcv)
125
126#if __GNUC__ >= 3 77#if __GNUC__ >= 4
127# define attribute(x) __attribute__(x) 78# define dSTACKLEVEL int stacklevel_dummy
128# define expect(expr,value) __builtin_expect ((expr),(value)) 79# define STACKLEVEL __builtin_frame_address (0)
129# define INLINE static inline
130#else 80#else
131# define attribute(x) 81# define dSTACKLEVEL volatile void *stacklevel
132# define expect(expr,value) (expr) 82# define STACKLEVEL ((void *)&stacklevel)
133# define INLINE static
134#endif 83#endif
135 84
136#define expect_false(expr) expect ((expr) != 0, 0) 85#define IN_DESTRUCT PL_dirty
137#define expect_true(expr) expect ((expr) != 0, 1)
138
139#define NOINLINE attribute ((noinline))
140 86
141#include "CoroAPI.h" 87#include "CoroAPI.h"
88#define GCoroAPI (&coroapi) /* very sneaky */
142 89
143#ifdef USE_ITHREADS 90#ifdef USE_ITHREADS
144
145static perl_mutex coro_lock;
146# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
147# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
148# if CORO_PTHREAD 91# if CORO_PTHREAD
149static void *coro_thx; 92static void *coro_thx;
150# endif 93# endif
94#endif
151 95
152#else 96#ifdef __linux
153 97# include <time.h> /* for timespec */
154# define LOCK (void)0 98# include <syscall.h> /* for SYS_* */
155# define UNLOCK (void)0 99# ifdef SYS_clock_gettime
156 100# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
101# define CORO_CLOCK_MONOTONIC 1
102# define CORO_CLOCK_THREAD_CPUTIME_ID 3
157#endif 103# endif
158 104#endif
159# undef LOCK
160# define LOCK (void)0
161# undef UNLOCK
162# define UNLOCK (void)0
163
164/* helper storage struct for Coro::AIO */
165struct io_state
166{
167 AV *res;
168 int errorno;
169 I32 laststype; /* U16 in 5.10.0 */
170 int laststatval;
171 Stat_t statcache;
172};
173 105
174static double (*nvtime)(); /* so why doesn't it take void? */ 106static double (*nvtime)(); /* so why doesn't it take void? */
107static void (*u2time)(pTHX_ UV ret[2]);
108
109/* we hijack an hopefully unused CV flag for our purposes */
110#define CVf_SLF 0x4000
111static OP *pp_slf (pTHX);
112static void slf_destroy (pTHX_ struct coro *coro);
175 113
176static U32 cctx_gen; 114static U32 cctx_gen;
177static size_t cctx_stacksize = CORO_STACKSIZE; 115static size_t cctx_stacksize = CORO_STACKSIZE;
178static struct CoroAPI coroapi; 116static struct CoroAPI coroapi;
179static AV *main_mainstack; /* used to differentiate between $main and others */ 117static AV *main_mainstack; /* used to differentiate between $main and others */
180static JMPENV *main_top_env; 118static JMPENV *main_top_env;
181static HV *coro_state_stash, *coro_stash; 119static HV *coro_state_stash, *coro_stash;
182static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 120static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
183static volatile struct coro *transfer_next;
184 121
185struct transfer_args 122static AV *av_destroy; /* destruction queue */
186{ 123static SV *sv_manager; /* the manager coro */
187 struct coro *prev, *next; 124static SV *sv_idle; /* $Coro::idle */
188};
189 125
190static GV *irsgv; /* $/ */ 126static GV *irsgv; /* $/ */
191static GV *stdoutgv; /* *STDOUT */ 127static GV *stdoutgv; /* *STDOUT */
192static SV *rv_diehook; 128static SV *rv_diehook;
193static SV *rv_warnhook; 129static SV *rv_warnhook;
194static HV *hv_sig; /* %SIG */ 130static HV *hv_sig; /* %SIG */
195 131
196/* async_pool helper stuff */ 132/* async_pool helper stuff */
197static SV *sv_pool_rss; 133static SV *sv_pool_rss;
198static SV *sv_pool_size; 134static SV *sv_pool_size;
135static SV *sv_async_pool_idle; /* description string */
199static AV *av_async_pool; 136static AV *av_async_pool; /* idle pool */
137static SV *sv_Coro; /* class string */
138static CV *cv_pool_handler;
200 139
201/* Coro::AnyEvent */ 140/* Coro::AnyEvent */
202static SV *sv_activity; 141static SV *sv_activity;
203 142
143/* enable processtime/realtime profiling */
144static char enable_times;
145typedef U32 coro_ts[2];
146static coro_ts time_real, time_cpu;
147static char times_valid;
148
204static struct coro_cctx *cctx_first; 149static struct coro_cctx *cctx_first;
205static int cctx_count, cctx_idle; 150static int cctx_count, cctx_idle;
206 151
207enum { 152enum
153{
208 CC_MAPPED = 0x01, 154 CC_MAPPED = 0x01,
209 CC_NOREUSE = 0x02, /* throw this away after tracing */ 155 CC_NOREUSE = 0x02, /* throw this away after tracing */
210 CC_TRACE = 0x04, 156 CC_TRACE = 0x04,
211 CC_TRACE_SUB = 0x08, /* trace sub calls */ 157 CC_TRACE_SUB = 0x08, /* trace sub calls */
212 CC_TRACE_LINE = 0x10, /* trace each statement */ 158 CC_TRACE_LINE = 0x10, /* trace each statement */
213 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 159 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
214}; 160};
215 161
216/* this is a structure representing a c-level coroutine */ 162/* this is a structure representing a c-level coroutine */
217typedef struct coro_cctx { 163typedef struct coro_cctx
164{
218 struct coro_cctx *next; 165 struct coro_cctx *next;
219 166
220 /* the stack */ 167 /* the stack */
221 void *sptr; 168 struct coro_stack stack;
222 size_t ssize;
223 169
224 /* cpu state */ 170 /* cpu state */
225 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 171 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
172#ifndef NDEBUG
226 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 173 JMPENV *idle_te; /* same as idle_sp, but for top_env */
174#endif
227 JMPENV *top_env; 175 JMPENV *top_env;
228 coro_context cctx; 176 coro_context cctx;
229 177
230 U32 gen; 178 U32 gen;
231#if CORO_USE_VALGRIND 179#if CORO_USE_VALGRIND
232 int valgrind_id; 180 int valgrind_id;
233#endif 181#endif
234 unsigned char flags; 182 unsigned char flags;
235} coro_cctx; 183} coro_cctx;
236 184
185static coro_cctx *cctx_current; /* the currently running cctx */
186
187/*****************************************************************************/
188
189static MGVTBL coro_state_vtbl;
190
237enum { 191enum
192{
238 CF_RUNNING = 0x0001, /* coroutine is running */ 193 CF_RUNNING = 0x0001, /* coroutine is running */
239 CF_READY = 0x0002, /* coroutine is ready */ 194 CF_READY = 0x0002, /* coroutine is ready */
240 CF_NEW = 0x0004, /* has never been switched to */ 195 CF_NEW = 0x0004, /* has never been switched to */
241 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 196 CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
197 CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
198 CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
242}; 199};
243 200
244/* the structure where most of the perl state is stored, overlaid on the cxstack */ 201/* the structure where most of the perl state is stored, overlaid on the cxstack */
245typedef struct { 202typedef struct
246 SV *defsv; 203{
247 AV *defav;
248 SV *errsv;
249 SV *irsgv;
250#define VAR(name,type) type name; 204 #define VARx(name,expr,type) type name;
251# include "state.h" 205 #include "state.h"
252#undef VAR
253} perl_slots; 206} perl_slots;
254 207
208/* how many context stack entries do we need for perl_slots */
255#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 209#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
256 210
257/* this is a structure representing a perl-level coroutine */ 211/* this is a structure representing a perl-level coroutine */
258struct coro { 212struct coro
213{
259 /* the c coroutine allocated to this perl coroutine, if any */ 214 /* the C coroutine allocated to this perl coroutine, if any */
260 coro_cctx *cctx; 215 coro_cctx *cctx;
261 216
262 /* process data */ 217 /* ready queue */
218 struct coro *next_ready;
219
220 /* state data */
221 struct CoroSLF slf_frame; /* saved slf frame */
263 AV *mainstack; 222 AV *mainstack;
264 perl_slots *slot; /* basically the saved sp */ 223 perl_slots *slot; /* basically the saved sp */
265 224
225 CV *startcv; /* the CV to execute */
266 AV *args; /* data associated with this coroutine (initial args) */ 226 AV *args; /* data associated with this coroutine (initial args) */
267 int refcnt; /* coroutines are refcounted, yes */
268 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
269 HV *hv; /* the perl hash associated with this coro, if any */ 228 HV *hv; /* the perl hash associated with this coro, if any */
270 229
271 /* statistics */ 230 /* statistics */
272 int usecount; /* number of transfers to this coro */ 231 int usecount; /* number of transfers to this coro */
273 232
274 /* coro process data */ 233 /* coro process data */
275 int prio; 234 int prio;
276 SV *throw; /* exception to be thrown */ 235 SV *except; /* exception to be thrown */
236 SV *rouse_cb; /* last rouse callback */
237 AV *on_destroy; /* callbacks or coros to notify on destroy */
238 AV *status; /* the exit status list */
277 239
278 /* async_pool */ 240 /* async_pool */
279 SV *saved_deffh; 241 SV *saved_deffh;
242 SV *invoke_cb;
243 AV *invoke_av;
244
245 /* on_enter/on_leave */
246 AV *on_enter;
247 AV *on_leave;
248
249 /* swap_sv */
250 AV *swap_sv;
251
252 /* times */
253 coro_ts t_cpu, t_real;
280 254
281 /* linked list */ 255 /* linked list */
282 struct coro *next, *prev; 256 struct coro *next, *prev;
283}; 257};
284 258
285typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
286typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
287 261
262/* the following variables are effectively part of the perl context */
263/* and get copied between struct coro and these variables */
264/* the main reason we don't support windows process emulation */
265static struct CoroSLF slf_frame; /* the current slf frame */
266
288/** Coro ********************************************************************/ 267/** Coro ********************************************************************/
289 268
290#define PRIO_MAX 3 269#define CORO_PRIO_MAX 3
291#define PRIO_HIGH 1 270#define CORO_PRIO_HIGH 1
292#define PRIO_NORMAL 0 271#define CORO_PRIO_NORMAL 0
293#define PRIO_LOW -1 272#define CORO_PRIO_LOW -1
294#define PRIO_IDLE -3 273#define CORO_PRIO_IDLE -3
295#define PRIO_MIN -4 274#define CORO_PRIO_MIN -4
296 275
297/* for Coro.pm */ 276/* for Coro.pm */
298static SV *coro_current; 277static SV *coro_current;
299static SV *coro_readyhook; 278static SV *coro_readyhook;
300static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 279static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
301static int coro_nready; 280static CV *cv_coro_run;
302static struct coro *coro_first; 281static struct coro *coro_first;
282#define coro_nready coroapi.nready
283
284/** JIT *********************************************************************/
285
286#if CORO_JIT
287 /* APPLE doesn't have mmap though */
288 #define CORO_JIT_UNIXY (__linux || __FreeBSD__ || __OpenBSD__ || __NetBSD__ || __solaris || __APPLE__)
289 #ifndef CORO_JIT_TYPE
290 #if ECB_AMD64 && CORO_JIT_UNIXY
291 #define CORO_JIT_TYPE "amd64-unix"
292 #elif __i386 && CORO_JIT_UNIXY
293 #define CORO_JIT_TYPE "x86-unix"
294 #endif
295 #endif
296#endif
297
298#if !defined(CORO_JIT_TYPE) || _POSIX_MEMORY_PROTECTION <= 0
299 #undef CORO_JIT
300#endif
301
302#if CORO_JIT
303 typedef void (*load_save_perl_slots_type)(perl_slots *);
304 static load_save_perl_slots_type load_perl_slots, save_perl_slots;
305#endif
306
307/** Coro::Select ************************************************************/
308
309static OP *(*coro_old_pp_sselect) (pTHX);
310static SV *coro_select_select;
311
312/* horrible hack, but if it works... */
313static OP *
314coro_pp_sselect (pTHX)
315{
316 dSP;
317 PUSHMARK (SP - 4); /* fake argument list */
318 XPUSHs (coro_select_select);
319 PUTBACK;
320
321 /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
322 PL_op->op_flags |= OPf_STACKED;
323 PL_op->op_private = 0;
324 return PL_ppaddr [OP_ENTERSUB](aTHX);
325}
326
327/** time stuff **************************************************************/
328
329#ifdef HAS_GETTIMEOFDAY
330
331ecb_inline void
332coro_u2time (pTHX_ UV ret[2])
333{
334 struct timeval tv;
335 gettimeofday (&tv, 0);
336
337 ret [0] = tv.tv_sec;
338 ret [1] = tv.tv_usec;
339}
340
341ecb_inline double
342coro_nvtime (void)
343{
344 struct timeval tv;
345 gettimeofday (&tv, 0);
346
347 return tv.tv_sec + tv.tv_usec * 1e-6;
348}
349
350ecb_inline void
351time_init (pTHX)
352{
353 nvtime = coro_nvtime;
354 u2time = coro_u2time;
355}
356
357#else
358
359ecb_inline void
360time_init (pTHX)
361{
362 SV **svp;
363
364 require_pv ("Time/HiRes.pm");
365
366 svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
367
368 if (!svp) croak ("Time::HiRes is required, but missing. Caught");
369 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
370
371 nvtime = INT2PTR (double (*)(), SvIV (*svp));
372
373 svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
374 u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
375}
376
377#endif
303 378
304/** lowlevel stuff **********************************************************/ 379/** lowlevel stuff **********************************************************/
305 380
306static SV * 381static SV * ecb_noinline
307coro_get_sv (pTHX_ const char *name, int create) 382coro_get_sv (pTHX_ const char *name, int create)
308{ 383{
309#if PERL_VERSION_ATLEAST (5,10,0) 384#if PERL_VERSION_ATLEAST (5,10,0)
310 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 385 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
311 get_sv (name, create); 386 get_sv (name, create);
312#endif 387#endif
313 return get_sv (name, create); 388 return get_sv (name, create);
314} 389}
315 390
316static AV * 391static AV * ecb_noinline
317coro_get_av (pTHX_ const char *name, int create) 392coro_get_av (pTHX_ const char *name, int create)
318{ 393{
319#if PERL_VERSION_ATLEAST (5,10,0) 394#if PERL_VERSION_ATLEAST (5,10,0)
320 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 395 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
321 get_av (name, create); 396 get_av (name, create);
322#endif 397#endif
323 return get_av (name, create); 398 return get_av (name, create);
324} 399}
325 400
326static HV * 401static HV * ecb_noinline
327coro_get_hv (pTHX_ const char *name, int create) 402coro_get_hv (pTHX_ const char *name, int create)
328{ 403{
329#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
330 /* silence stupid and wrong 5.10 warning that I am unable to switch off */ 405 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
331 get_hv (name, create); 406 get_hv (name, create);
332#endif 407#endif
333 return get_hv (name, create); 408 return get_hv (name, create);
334} 409}
335 410
336static AV * 411ecb_inline void
412coro_times_update (void)
413{
414#ifdef coro_clock_gettime
415 struct timespec ts;
416
417 ts.tv_sec = ts.tv_nsec = 0;
418 coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
419 time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
420
421 ts.tv_sec = ts.tv_nsec = 0;
422 coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
423 time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
424#else
425 dTHX;
426 UV tv[2];
427
428 u2time (aTHX_ tv);
429 time_real [0] = tv [0];
430 time_real [1] = tv [1] * 1000;
431#endif
432}
433
434ecb_inline void
435coro_times_add (struct coro *c)
436{
437 c->t_real [1] += time_real [1];
438 if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
439 c->t_real [0] += time_real [0];
440
441 c->t_cpu [1] += time_cpu [1];
442 if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
443 c->t_cpu [0] += time_cpu [0];
444}
445
446ecb_inline void
447coro_times_sub (struct coro *c)
448{
449 if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
450 c->t_real [1] -= time_real [1];
451 c->t_real [0] -= time_real [0];
452
453 if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
454 c->t_cpu [1] -= time_cpu [1];
455 c->t_cpu [0] -= time_cpu [0];
456}
457
458/*****************************************************************************/
459/* magic glue */
460
461#define CORO_MAGIC_type_cv 26
462#define CORO_MAGIC_type_state PERL_MAGIC_ext
463
464#define CORO_MAGIC_NN(sv, type) \
465 (ecb_expect_true (SvMAGIC (sv)->mg_type == type) \
466 ? SvMAGIC (sv) \
467 : mg_find (sv, type))
468
469#define CORO_MAGIC(sv, type) \
470 (ecb_expect_true (SvMAGIC (sv)) \
471 ? CORO_MAGIC_NN (sv, type) \
472 : 0)
473
474#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
475#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
476
477ecb_inline MAGIC *
478SvSTATEhv_p (pTHX_ SV *coro)
479{
480 MAGIC *mg;
481
482 if (ecb_expect_true (
483 SvTYPE (coro) == SVt_PVHV
484 && (mg = CORO_MAGIC_state (coro))
485 && mg->mg_virtual == &coro_state_vtbl
486 ))
487 return mg;
488
489 return 0;
490}
491
492ecb_inline struct coro *
493SvSTATE_ (pTHX_ SV *coro)
494{
495 MAGIC *mg;
496
497 if (SvROK (coro))
498 coro = SvRV (coro);
499
500 mg = SvSTATEhv_p (aTHX_ coro);
501 if (!mg)
502 croak ("Coro::State object required");
503
504 return (struct coro *)mg->mg_ptr;
505}
506
507#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
508
509/* faster than SvSTATE, but expects a coroutine hv */
510#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
511#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
512
513/*****************************************************************************/
514/* padlist management and caching */
515
516ecb_inline PADLIST *
337coro_clone_padlist (pTHX_ CV *cv) 517coro_derive_padlist (pTHX_ CV *cv)
338{ 518{
339 AV *padlist = CvPADLIST (cv); 519 PADLIST *padlist = CvPADLIST (cv);
340 AV *newpadlist, *newpad; 520 PADLIST *newpadlist;
521 PAD *newpad;
522 PADOFFSET off = PadlistMAX (padlist) + 1;
341 523
342 newpadlist = newAV (); 524#if NEWPADAPI
525
526 /* if we had the original CvDEPTH, we might be able to steal the CvDEPTH+1 entry instead */
527 /* 20131102194744.GA6705@schmorp.de, 20131102195825.2013.qmail@lists-nntp.develooper.com */
528 while (!PadlistARRAY (padlist)[off - 1])
529 --off;
530
531 Perl_pad_push (aTHX_ padlist, off);
532
533 newpad = PadlistARRAY (padlist)[off];
534 PadlistARRAY (padlist)[off] = 0;
535
536#else
537
538#if PERL_VERSION_ATLEAST (5,10,0)
539 Perl_pad_push (aTHX_ padlist, off);
540#else
541 Perl_pad_push (aTHX_ padlist, off, 1);
542#endif
543
544 newpad = PadlistARRAY (padlist)[off];
545 PadlistMAX (padlist) = off - 1;
546
547#endif
548
549 newPADLIST (newpadlist);
550#if !PERL_VERSION_ATLEAST(5,15,3)
551 /* Padlists are AvREAL as of 5.15.3. See perl bug #98092 and perl commit 7d953ba. */
343 AvREAL_off (newpadlist); 552 AvREAL_off (newpadlist);
344#if PERL_VERSION_ATLEAST (5,10,0)
345 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
346#else
347 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
348#endif 553#endif
349 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
350 --AvFILLp (padlist);
351 554
352 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 555 /* Already extended to 2 elements by newPADLIST. */
353 av_store (newpadlist, 1, (SV *)newpad); 556 PadlistMAX (newpadlist) = 1;
557 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
558 PadlistARRAY (newpadlist)[1] = newpad;
354 559
355 return newpadlist; 560 return newpadlist;
356} 561}
357 562
358static void 563ecb_inline void
359free_padlist (pTHX_ AV *padlist) 564free_padlist (pTHX_ PADLIST *padlist)
360{ 565{
361 /* may be during global destruction */ 566 /* may be during global destruction */
362 if (SvREFCNT (padlist)) 567 if (!IN_DESTRUCT)
363 { 568 {
364 I32 i = AvFILLp (padlist); 569 I32 i = PadlistMAX (padlist);
365 while (i >= 0) 570
571 while (i > 0) /* special-case index 0 */
366 { 572 {
367 SV **svp = av_fetch (padlist, i--, FALSE); 573 /* we try to be extra-careful here */
574 PAD *pad = PadlistARRAY (padlist)[i--];
575
368 if (svp) 576 if (pad)
369 { 577 {
370 SV *sv; 578 I32 j = PadMAX (pad);
371 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 579
580 while (j >= 0)
372 SvREFCNT_dec (sv); 581 SvREFCNT_dec (PadARRAY (pad)[j--]);
373 582
583 PadMAX (pad) = -1;
374 SvREFCNT_dec (*svp); 584 SvREFCNT_dec (pad);
375 } 585 }
376 } 586 }
377 587
588 SvREFCNT_dec (PadlistNAMES (padlist));
589
590#if NEWPADAPI
591 Safefree (PadlistARRAY (padlist));
592 Safefree (padlist);
593#else
594 AvFILLp (padlist) = -1;
595 AvREAL_off (padlist);
378 SvREFCNT_dec ((SV*)padlist); 596 SvREFCNT_dec ((SV*)padlist);
597#endif
379 } 598 }
380} 599}
381 600
382static int 601static int
383coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 602coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
384{ 603{
385 AV *padlist; 604 PADLIST *padlist;
386 AV *av = (AV *)mg->mg_obj; 605 PADLIST **padlists = (PADLIST **)(mg->mg_ptr + sizeof(size_t));
606 size_t len = *(size_t *)mg->mg_ptr;
387 607
388 /* casting is fun. */ 608 /* perl manages to free our internal AV and _then_ call us */
389 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 609 if (IN_DESTRUCT)
610 return 0;
611
612 while (len--)
390 free_padlist (aTHX_ padlist); 613 free_padlist (aTHX_ padlists[len]);
391
392 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
393 614
394 return 0; 615 return 0;
395} 616}
396
397#define CORO_MAGIC_type_cv PERL_MAGIC_ext
398#define CORO_MAGIC_type_state PERL_MAGIC_ext
399 617
400static MGVTBL coro_cv_vtbl = { 618static MGVTBL coro_cv_vtbl = {
401 0, 0, 0, 0, 619 0, 0, 0, 0,
402 coro_cv_free 620 coro_cv_free
403}; 621};
404 622
405#define CORO_MAGIC(sv, type) \
406 SvMAGIC (sv) \
407 ? SvMAGIC (sv)->mg_type == type \
408 ? SvMAGIC (sv) \
409 : mg_find (sv, type) \
410 : 0
411
412#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
413#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
414
415INLINE struct coro *
416SvSTATE_ (pTHX_ SV *coro)
417{
418 HV *stash;
419 MAGIC *mg;
420
421 if (SvROK (coro))
422 coro = SvRV (coro);
423
424 if (expect_false (SvTYPE (coro) != SVt_PVHV))
425 croak ("Coro::State object required");
426
427 stash = SvSTASH (coro);
428 if (expect_false (stash != coro_stash && stash != coro_state_stash))
429 {
430 /* very slow, but rare, check */
431 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
432 croak ("Coro::State object required");
433 }
434
435 mg = CORO_MAGIC_state (coro);
436 return (struct coro *)mg->mg_ptr;
437}
438
439#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
440
441/* the next two functions merely cache the padlists */ 623/* the next two functions merely cache the padlists */
442static void 624ecb_inline void
443get_padlist (pTHX_ CV *cv) 625get_padlist (pTHX_ CV *cv)
444{ 626{
445 MAGIC *mg = CORO_MAGIC_cv (cv); 627 MAGIC *mg = CORO_MAGIC_cv (cv);
446 AV *av; 628 size_t *lenp;
447 629
448 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 630 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
449 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 631 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
450 else 632 else
451 { 633 {
452#if CORO_PREFER_PERL_FUNCTIONS 634#if CORO_PREFER_PERL_FUNCTIONS
453 /* this is probably cleaner? but also slower! */ 635 /* this is probably cleaner? but also slower! */
454 /* in practise, it seems to be less stable */ 636 /* in practise, it seems to be less stable */
455 CV *cp = Perl_cv_clone (cv); 637 CV *cp = Perl_cv_clone (aTHX_ cv);
456 CvPADLIST (cv) = CvPADLIST (cp); 638 CvPADLIST (cv) = CvPADLIST (cp);
457 CvPADLIST (cp) = 0; 639 CvPADLIST (cp) = 0;
458 SvREFCNT_dec (cp); 640 SvREFCNT_dec (cp);
459#else 641#else
460 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 642 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
461#endif 643#endif
462 } 644 }
463} 645}
464 646
465static void 647ecb_inline void
466put_padlist (pTHX_ CV *cv) 648put_padlist (pTHX_ CV *cv)
467{ 649{
468 MAGIC *mg = CORO_MAGIC_cv (cv); 650 MAGIC *mg = CORO_MAGIC_cv (cv);
469 AV *av;
470 651
471 if (expect_false (!mg)) 652 if (ecb_expect_false (!mg))
653 {
472 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); 654 mg = sv_magicext ((SV *)cv, 0, CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
655 Newz (0, mg->mg_ptr ,sizeof (size_t) + sizeof (PADLIST *), char);
656 mg->mg_len = 1; /* so mg_free frees mg_ptr */
657 }
658 else
659 Renew (mg->mg_ptr,
660 sizeof(size_t) + (*(size_t *)mg->mg_ptr + 1) * sizeof(PADLIST *),
661 char);
473 662
474 av = (AV *)mg->mg_obj; 663 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
475
476 if (expect_false (AvFILLp (av) >= AvMAX (av)))
477 av_extend (av, AvMAX (av) + 1);
478
479 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
480} 664}
481 665
482/** load & save, init *******************************************************/ 666/** load & save, init *******************************************************/
667
668ecb_inline void
669swap_sv (SV *a, SV *b)
670{
671 const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
672 SV tmp;
673
674 /* swap sv_any */
675 SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
676
677 /* swap sv_flags */
678 SvFLAGS (&tmp) = SvFLAGS (a);
679 SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
680 SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
681
682#if PERL_VERSION_ATLEAST (5,10,0)
683 /* perl 5.10 and later complicates this _quite_ a bit, but it also
684 * is much faster, so no quarrels here. alternatively, we could
685 * sv_upgrade to avoid this.
686 */
687 {
688 /* swap sv_u */
689 tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
690
691 /* if SvANY points to the head, we need to adjust the pointers,
692 * as the pointer for a still points to b, and maybe vice versa.
693 */
694 #define svany_in_head(type) \
695 (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
696
697 if (svany_in_head (SvTYPE (a)))
698 SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
699
700 if (svany_in_head (SvTYPE (b)))
701 SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
702 }
703#endif
704}
705
706/* swap sv heads, at least logically */
707static void
708swap_svs (pTHX_ Coro__State c)
709{
710 int i;
711
712 for (i = 0; i <= AvFILLp (c->swap_sv); i += 2)
713 swap_sv (AvARRAY (c->swap_sv)[i], AvARRAY (c->swap_sv)[i + 1]);
714}
715
716#define SWAP_SVS(coro) \
717 if (ecb_expect_false ((coro)->swap_sv)) \
718 swap_svs (aTHX_ (coro))
719
720static void
721on_enterleave_call (pTHX_ SV *cb);
483 722
484static void 723static void
485load_perl (pTHX_ Coro__State c) 724load_perl (pTHX_ Coro__State c)
486{ 725{
487 perl_slots *slot = c->slot; 726 perl_slots *slot = c->slot;
488 c->slot = 0; 727 c->slot = 0;
489 728
490 PL_mainstack = c->mainstack; 729 PL_mainstack = c->mainstack;
491 730
492 GvSV (PL_defgv) = slot->defsv; 731#if CORO_JIT
493 GvAV (PL_defgv) = slot->defav; 732 load_perl_slots (slot);
494 GvSV (PL_errgv) = slot->errsv; 733#else
495 GvSV (irsgv) = slot->irsgv;
496
497 #define VAR(name,type) PL_ ## name = slot->name; 734 #define VARx(name,expr,type) expr = slot->name;
498 # include "state.h" 735 #include "state.h"
499 #undef VAR 736#endif
500 737
501 { 738 {
502 dSP; 739 dSP;
503 740
504 CV *cv; 741 CV *cv;
505 742
506 /* now do the ugly restore mess */ 743 /* now do the ugly restore mess */
507 while (expect_true (cv = (CV *)POPs)) 744 while (ecb_expect_true (cv = (CV *)POPs))
508 { 745 {
509 put_padlist (aTHX_ cv); /* mark this padlist as available */ 746 put_padlist (aTHX_ cv); /* mark this padlist as available */
510 CvDEPTH (cv) = PTR2IV (POPs); 747 CvDEPTH (cv) = PTR2IV (POPs);
511 CvPADLIST (cv) = (AV *)POPs; 748 CvPADLIST (cv) = (PADLIST *)POPs;
512 } 749 }
513 750
514 PUTBACK; 751 PUTBACK;
515 } 752 }
753
754 slf_frame = c->slf_frame;
755 CORO_THROW = c->except;
756
757 if (ecb_expect_false (enable_times))
758 {
759 if (ecb_expect_false (!times_valid))
760 coro_times_update ();
761
762 coro_times_sub (c);
763 }
764
765 if (ecb_expect_false (c->on_enter))
766 {
767 int i;
768
769 for (i = 0; i <= AvFILLp (c->on_enter); ++i)
770 on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
771 }
772
773 SWAP_SVS (c);
516} 774}
517 775
518static void 776static void
519save_perl (pTHX_ Coro__State c) 777save_perl (pTHX_ Coro__State c)
520{ 778{
779 SWAP_SVS (c);
780
781 if (ecb_expect_false (c->on_leave))
782 {
783 int i;
784
785 for (i = AvFILLp (c->on_leave); i >= 0; --i)
786 on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
787 }
788
789 times_valid = 0;
790
791 if (ecb_expect_false (enable_times))
792 {
793 coro_times_update (); times_valid = 1;
794 coro_times_add (c);
795 }
796
797 c->except = CORO_THROW;
798 c->slf_frame = slf_frame;
799
521 { 800 {
522 dSP; 801 dSP;
523 I32 cxix = cxstack_ix; 802 I32 cxix = cxstack_ix;
524 PERL_CONTEXT *ccstk = cxstack; 803 PERL_CONTEXT *ccstk = cxstack;
525 PERL_SI *top_si = PL_curstackinfo; 804 PERL_SI *top_si = PL_curstackinfo;
… …
531 810
532 XPUSHs (Nullsv); 811 XPUSHs (Nullsv);
533 /* this loop was inspired by pp_caller */ 812 /* this loop was inspired by pp_caller */
534 for (;;) 813 for (;;)
535 { 814 {
536 while (expect_true (cxix >= 0)) 815 while (ecb_expect_true (cxix >= 0))
537 { 816 {
538 PERL_CONTEXT *cx = &ccstk[cxix--]; 817 PERL_CONTEXT *cx = &ccstk[cxix--];
539 818
540 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) 819 if (ecb_expect_true (CxTYPE (cx) == CXt_SUB) || ecb_expect_false (CxTYPE (cx) == CXt_FORMAT))
541 { 820 {
542 CV *cv = cx->blk_sub.cv; 821 CV *cv = cx->blk_sub.cv;
543 822
544 if (expect_true (CvDEPTH (cv))) 823 if (ecb_expect_true (CvDEPTH (cv)))
545 { 824 {
546 EXTEND (SP, 3); 825 EXTEND (SP, 3);
547 PUSHs ((SV *)CvPADLIST (cv)); 826 PUSHs ((SV *)CvPADLIST (cv));
548 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 827 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
549 PUSHs ((SV *)cv); 828 PUSHs ((SV *)cv);
… …
552 get_padlist (aTHX_ cv); 831 get_padlist (aTHX_ cv);
553 } 832 }
554 } 833 }
555 } 834 }
556 835
557 if (expect_true (top_si->si_type == PERLSI_MAIN)) 836 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
558 break; 837 break;
559 838
560 top_si = top_si->si_prev; 839 top_si = top_si->si_prev;
561 ccstk = top_si->si_cxstack; 840 ccstk = top_si->si_cxstack;
562 cxix = top_si->si_cxix; 841 cxix = top_si->si_cxix;
… …
564 843
565 PUTBACK; 844 PUTBACK;
566 } 845 }
567 846
568 /* allocate some space on the context stack for our purposes */ 847 /* allocate some space on the context stack for our purposes */
569 /* we manually unroll here, as usually 2 slots is enough */ 848 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
570 if (SLOT_COUNT >= 1) CXINC;
571 if (SLOT_COUNT >= 2) CXINC;
572 if (SLOT_COUNT >= 3) CXINC;
573 { 849 {
574 int i; 850 unsigned int i;
851
575 for (i = 3; i < SLOT_COUNT; ++i) 852 for (i = 0; i < SLOT_COUNT; ++i)
576 CXINC; 853 CXINC;
577 } 854
578 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 855 cxstack_ix -= SLOT_COUNT; /* undo allocation */
856 }
579 857
580 c->mainstack = PL_mainstack; 858 c->mainstack = PL_mainstack;
581 859
582 { 860 {
583 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 861 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
584 862
585 slot->defav = GvAV (PL_defgv); 863#if CORO_JIT
586 slot->defsv = DEFSV; 864 save_perl_slots (slot);
587 slot->errsv = ERRSV; 865#else
588 slot->irsgv = GvSV (irsgv);
589
590 #define VAR(name,type) slot->name = PL_ ## name; 866 #define VARx(name,expr,type) slot->name = expr;
591 # include "state.h" 867 #include "state.h"
592 #undef VAR 868#endif
593 } 869 }
594} 870}
595 871
596/* 872/*
597 * allocate various perl stacks. This is an exact copy 873 * allocate various perl stacks. This is almost an exact copy
598 * of perl.c:init_stacks, except that it uses less memory 874 * of perl.c:init_stacks, except that it uses less memory
599 * on the (sometimes correct) assumption that coroutines do 875 * on the (sometimes correct) assumption that coroutines do
600 * not usually need a lot of stackspace. 876 * not usually need a lot of stackspace.
601 */ 877 */
602#if CORO_PREFER_PERL_FUNCTIONS 878#if CORO_PREFER_PERL_FUNCTIONS
603# define coro_init_stacks init_stacks 879# define coro_init_stacks(thx) init_stacks ()
604#else 880#else
605static void 881static void
606coro_init_stacks (pTHX) 882coro_init_stacks (pTHX)
607{ 883{
608 PL_curstackinfo = new_stackinfo(32, 8); 884 PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
609 PL_curstackinfo->si_type = PERLSI_MAIN; 885 PL_curstackinfo->si_type = PERLSI_MAIN;
610 PL_curstack = PL_curstackinfo->si_stack; 886 PL_curstack = PL_curstackinfo->si_stack;
611 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 887 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
612 888
613 PL_stack_base = AvARRAY(PL_curstack); 889 PL_stack_base = AvARRAY(PL_curstack);
… …
628#endif 904#endif
629 905
630 New(54,PL_scopestack,8,I32); 906 New(54,PL_scopestack,8,I32);
631 PL_scopestack_ix = 0; 907 PL_scopestack_ix = 0;
632 PL_scopestack_max = 8; 908 PL_scopestack_max = 8;
909#if HAS_SCOPESTACK_NAME
910 New(54,PL_scopestack_name,8,const char*);
911#endif
633 912
634 New(54,PL_savestack,24,ANY); 913 New(54,PL_savestack,24,ANY);
635 PL_savestack_ix = 0; 914 PL_savestack_ix = 0;
636 PL_savestack_max = 24; 915 PL_savestack_max = 24;
637 916
… …
665 } 944 }
666 945
667 Safefree (PL_tmps_stack); 946 Safefree (PL_tmps_stack);
668 Safefree (PL_markstack); 947 Safefree (PL_markstack);
669 Safefree (PL_scopestack); 948 Safefree (PL_scopestack);
949#if HAS_SCOPESTACK_NAME
950 Safefree (PL_scopestack_name);
951#endif
670 Safefree (PL_savestack); 952 Safefree (PL_savestack);
671#if !PERL_VERSION_ATLEAST (5,10,0) 953#if !PERL_VERSION_ATLEAST (5,10,0)
672 Safefree (PL_retstack); 954 Safefree (PL_retstack);
673#endif 955#endif
674} 956}
675 957
958#define CORO_RSS \
959 rss += sizeof (SYM (curstackinfo)); \
960 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
961 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
962 rss += SYM (tmps_max) * sizeof (SV *); \
963 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
964 rss += SYM (scopestack_max) * sizeof (I32); \
965 rss += SYM (savestack_max) * sizeof (ANY);
966
676static size_t 967static size_t
677coro_rss (pTHX_ struct coro *coro) 968coro_rss (pTHX_ struct coro *coro)
678{ 969{
679 size_t rss = sizeof (*coro); 970 size_t rss = sizeof (*coro);
680 971
681 if (coro->mainstack) 972 if (coro->mainstack)
682 { 973 {
683 perl_slots tmp_slot;
684 perl_slots *slot;
685
686 if (coro->flags & CF_RUNNING) 974 if (coro->flags & CF_RUNNING)
687 { 975 {
688 slot = &tmp_slot; 976 #define SYM(sym) PL_ ## sym
689 977 CORO_RSS;
690 #define VAR(name,type) slot->name = PL_ ## name;
691 # include "state.h"
692 #undef VAR 978 #undef SYM
693 } 979 }
694 else 980 else
695 slot = coro->slot;
696
697 if (slot)
698 { 981 {
699 rss += sizeof (slot->curstackinfo); 982 #define SYM(sym) coro->slot->sym
700 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 983 CORO_RSS;
701 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 984 #undef SYM
702 rss += slot->tmps_max * sizeof (SV *);
703 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
704 rss += slot->scopestack_max * sizeof (I32);
705 rss += slot->savestack_max * sizeof (ANY);
706
707#if !PERL_VERSION_ATLEAST (5,10,0)
708 rss += slot->retstack_max * sizeof (OP *);
709#endif
710 } 985 }
711 } 986 }
712 987
713 return rss; 988 return rss;
714}
715
716/** set stacklevel support **************************************************/
717
718/* we sometimes need to create the effect of pp_set_stacklevel calling us */
719#define SSL_HEAD (void)0
720/* we somtimes need to create the effect of leaving via pp_set_stacklevel */
721#define SSL_TAIL set_stacklevel_tail (aTHX)
722
723INLINE void
724set_stacklevel_tail (pTHX)
725{
726 dSP;
727 int gimme = GIMME_V;
728
729 if (gimme == G_SCALAR)
730 XPUSHs (&PL_sv_undef);
731
732 PUTBACK;
733} 989}
734 990
735/** coroutine stack handling ************************************************/ 991/** coroutine stack handling ************************************************/
736 992
737static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); 993static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
… …
746#endif 1002#endif
747 1003
748/* 1004/*
749 * This overrides the default magic get method of %SIG elements. 1005 * This overrides the default magic get method of %SIG elements.
750 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook 1006 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
751 * and instead of tryign to save and restore the hash elements, we just provide 1007 * and instead of trying to save and restore the hash elements (extremely slow),
752 * readback here. 1008 * we just provide our own readback here.
753 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
754 * not expecting this to actually change the hook. This is a potential problem
755 * when a schedule happens then, but we ignore this.
756 */ 1009 */
757static int 1010static int ecb_cold
758coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1011coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
759{ 1012{
760 const char *s = MgPV_nolen_const (mg); 1013 const char *s = MgPV_nolen_const (mg);
761 1014
762 if (*s == '_') 1015 if (*s == '_')
763 { 1016 {
764 SV **svp = 0; 1017 SV **svp = 0;
765 1018
766 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1019 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
767 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1020 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
768 1021
769 if (svp) 1022 if (svp)
770 { 1023 {
771 sv_setsv (sv, *svp ? *svp : &PL_sv_undef); 1024 SV *ssv;
1025
1026 if (!*svp)
1027 ssv = &PL_sv_undef;
1028 else if (SvTYPE (*svp) == SVt_PVCV) /* perlio directly stores a CV in warnhook. ugh. */
1029 ssv = sv_2mortal (newRV_inc (*svp));
1030 else
1031 ssv = *svp;
1032
1033 sv_setsv (sv, ssv);
772 return 0; 1034 return 0;
773 } 1035 }
774 } 1036 }
775 1037
776 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1038 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
777} 1039}
778 1040
779static int 1041static int ecb_cold
780coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1042coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
781{ 1043{
782 const char *s = MgPV_nolen_const (mg); 1044 const char *s = MgPV_nolen_const (mg);
783 1045
784 if (*s == '_') 1046 if (*s == '_')
… …
798 } 1060 }
799 1061
800 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1062 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
801} 1063}
802 1064
803static int 1065static int ecb_cold
804coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1066coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
805{ 1067{
806 const char *s = MgPV_nolen_const (mg); 1068 const char *s = MgPV_nolen_const (mg);
807 1069
808 if (*s == '_') 1070 if (*s == '_')
… …
813 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1075 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
814 1076
815 if (svp) 1077 if (svp)
816 { 1078 {
817 SV *old = *svp; 1079 SV *old = *svp;
818 *svp = newSVsv (sv); 1080 *svp = SvOK (sv) ? newSVsv (sv) : 0;
819 SvREFCNT_dec (old); 1081 SvREFCNT_dec (old);
820 return 0; 1082 return 0;
821 } 1083 }
822 } 1084 }
823 1085
824 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1086 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
825} 1087}
826 1088
827static void 1089static void
1090prepare_nop (pTHX_ struct coro_transfer_args *ta)
1091{
1092 /* kind of mega-hacky, but works */
1093 ta->next = ta->prev = (struct coro *)ta;
1094}
1095
1096static int
1097slf_check_nop (pTHX_ struct CoroSLF *frame)
1098{
1099 return 0;
1100}
1101
1102static int
1103slf_check_repeat (pTHX_ struct CoroSLF *frame)
1104{
1105 return 1;
1106}
1107
1108static UNOP init_perl_op;
1109
1110ecb_noinline static void /* noinline to keep it out of the transfer fast path */
828coro_setup (pTHX_ struct coro *coro) 1111init_perl (pTHX_ struct coro *coro)
829{ 1112{
830 /* 1113 /*
831 * emulate part of the perl startup here. 1114 * emulate part of the perl startup here.
832 */ 1115 */
833 coro_init_stacks (aTHX); 1116 coro_init_stacks (aTHX);
834 1117
835 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
836 PL_curcop = &PL_compiling; 1119 PL_curcop = &PL_compiling;
837 PL_in_eval = EVAL_NULL; 1120 PL_in_eval = EVAL_NULL;
838 PL_comppad = 0; 1121 PL_comppad = 0;
1122 PL_comppad_name = 0;
1123 PL_comppad_name_fill = 0;
1124 PL_comppad_name_floor = 0;
839 PL_curpm = 0; 1125 PL_curpm = 0;
840 PL_curpad = 0; 1126 PL_curpad = 0;
841 PL_localizing = 0; 1127 PL_localizing = 0;
842 PL_dirty = 0;
843 PL_restartop = 0; 1128 PL_restartop = 0;
844#if PERL_VERSION_ATLEAST (5,10,0) 1129#if PERL_VERSION_ATLEAST (5,10,0)
845 PL_parser = 0; 1130 PL_parser = 0;
846#endif 1131#endif
1132 PL_hints = 0;
847 1133
848 /* recreate the die/warn hooks */ 1134 /* recreate the die/warn hooks */
849 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1135 PL_diehook = SvREFCNT_inc (rv_diehook);
850 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1136 PL_warnhook = SvREFCNT_inc (rv_warnhook);
851 1137
852 GvSV (PL_defgv) = newSV (0); 1138 GvSV (PL_defgv) = newSV (0);
853 GvAV (PL_defgv) = coro->args; coro->args = 0; 1139 GvAV (PL_defgv) = coro->args; coro->args = 0;
854 GvSV (PL_errgv) = newSV (0); 1140 GvSV (PL_errgv) = newSV (0);
855 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); 1141 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
1142 GvHV (PL_hintgv) = 0;
856 PL_rs = newSVsv (GvSV (irsgv)); 1143 PL_rs = newSVsv (GvSV (irsgv));
857 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1144 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
858 1145
859 { 1146 {
860 dSP; 1147 dSP;
861 UNOP myop; 1148 UNOP myop;
862 1149
863 Zero (&myop, 1, UNOP); 1150 Zero (&myop, 1, UNOP);
864 myop.op_next = Nullop; 1151 myop.op_next = Nullop;
1152 myop.op_type = OP_ENTERSUB;
865 myop.op_flags = OPf_WANT_VOID; 1153 myop.op_flags = OPf_WANT_VOID;
866 1154
867 PUSHMARK (SP); 1155 PUSHMARK (SP);
868 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1156 PUSHs ((SV *)coro->startcv);
869 PUTBACK; 1157 PUTBACK;
870 PL_op = (OP *)&myop; 1158 PL_op = (OP *)&myop;
871 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1159 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
872 SPAGAIN;
873 } 1160 }
874 1161
875 /* this newly created coroutine might be run on an existing cctx which most 1162 /* this newly created coroutine might be run on an existing cctx which most
876 * likely was suspended in set_stacklevel, called from pp_set_stacklevel, 1163 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
877 * so we have to emulate entering pp_set_stacklevel here.
878 */ 1164 */
879 SSL_HEAD; 1165 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880} 1166 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
1167 slf_frame.destroy = 0;
881 1168
1169 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1170 init_perl_op.op_next = PL_op;
1171 init_perl_op.op_type = OP_ENTERSUB;
1172 init_perl_op.op_ppaddr = pp_slf;
1173 /* no flags etc. required, as an init function won't be called */
1174
1175 PL_op = (OP *)&init_perl_op;
1176
1177 /* copy throw, in case it was set before init_perl */
1178 CORO_THROW = coro->except;
1179
1180 SWAP_SVS (coro);
1181
1182 if (ecb_expect_false (enable_times))
1183 {
1184 coro_times_update ();
1185 coro_times_sub (coro);
1186 }
1187}
1188
882static void 1189static void
883coro_destruct (pTHX_ struct coro *coro) 1190coro_unwind_stacks (pTHX)
884{ 1191{
885 if (!IN_DESTRUCT) 1192 if (!IN_DESTRUCT)
886 { 1193 {
887 /* restore all saved variables and stuff */ 1194 /* restore all saved variables and stuff */
888 LEAVE_SCOPE (0); 1195 LEAVE_SCOPE (0);
… …
896 POPSTACK_TO (PL_mainstack); 1203 POPSTACK_TO (PL_mainstack);
897 1204
898 /* unwind main stack */ 1205 /* unwind main stack */
899 dounwind (-1); 1206 dounwind (-1);
900 } 1207 }
1208}
901 1209
902 SvREFCNT_dec (GvSV (PL_defgv)); 1210static void
903 SvREFCNT_dec (GvAV (PL_defgv)); 1211destroy_perl (pTHX_ struct coro *coro)
904 SvREFCNT_dec (GvSV (PL_errgv)); 1212{
905 SvREFCNT_dec (PL_defoutgv); 1213 SV *svf [9];
906 SvREFCNT_dec (PL_rs);
907 SvREFCNT_dec (GvSV (irsgv));
908 1214
909 SvREFCNT_dec (PL_diehook);
910 SvREFCNT_dec (PL_warnhook);
911 1215 {
1216 SV *old_current = SvRV (coro_current);
1217 struct coro *current = SvSTATE (old_current);
1218
1219 assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1220
1221 save_perl (aTHX_ current);
1222
1223 /* this will cause transfer_check to croak on block*/
1224 SvRV_set (coro_current, (SV *)coro->hv);
1225
1226 load_perl (aTHX_ coro);
1227
1228 coro_unwind_stacks (aTHX);
1229
1230 /* restore swapped sv's */
1231 SWAP_SVS (coro);
1232
1233 coro_destruct_stacks (aTHX);
1234
1235 /* now save some sv's to be free'd later */
1236 svf [0] = GvSV (PL_defgv);
1237 svf [1] = (SV *)GvAV (PL_defgv);
1238 svf [2] = GvSV (PL_errgv);
1239 svf [3] = (SV *)PL_defoutgv;
1240 svf [4] = PL_rs;
1241 svf [5] = GvSV (irsgv);
1242 svf [6] = (SV *)GvHV (PL_hintgv);
1243 svf [7] = PL_diehook;
1244 svf [8] = PL_warnhook;
1245 assert (9 == sizeof (svf) / sizeof (*svf));
1246
1247 SvRV_set (coro_current, old_current);
1248
1249 load_perl (aTHX_ current);
1250 }
1251
1252 {
1253 unsigned int i;
1254
1255 for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1256 SvREFCNT_dec (svf [i]);
1257
912 SvREFCNT_dec (coro->saved_deffh); 1258 SvREFCNT_dec (coro->saved_deffh);
913 SvREFCNT_dec (coro->throw); 1259 SvREFCNT_dec (coro->rouse_cb);
914 1260 SvREFCNT_dec (coro->invoke_cb);
915 coro_destruct_stacks (aTHX); 1261 SvREFCNT_dec (coro->invoke_av);
1262 }
916} 1263}
917 1264
918INLINE void 1265ecb_inline void
919free_coro_mortal (pTHX) 1266free_coro_mortal (pTHX)
920{ 1267{
921 if (expect_true (coro_mortal)) 1268 if (ecb_expect_true (coro_mortal))
922 { 1269 {
923 SvREFCNT_dec (coro_mortal); 1270 SvREFCNT_dec ((SV *)coro_mortal);
924 coro_mortal = 0; 1271 coro_mortal = 0;
925 } 1272 }
926} 1273}
927 1274
928static int 1275static int
929runops_trace (pTHX) 1276runops_trace (pTHX)
930{ 1277{
931 COP *oldcop = 0; 1278 COP *oldcop = 0;
932 int oldcxix = -2; 1279 int oldcxix = -2;
933 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
934 coro_cctx *cctx = coro->cctx;
935 1280
936 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1281 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
937 { 1282 {
938 PERL_ASYNC_CHECK (); 1283 PERL_ASYNC_CHECK ();
939 1284
940 if (cctx->flags & CC_TRACE_ALL) 1285 if (cctx_current->flags & CC_TRACE_ALL)
941 { 1286 {
942 if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) 1287 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
943 { 1288 {
944 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1289 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
945 SV **bot, **top; 1290 SV **bot, **top;
946 AV *av = newAV (); /* return values */ 1291 AV *av = newAV (); /* return values */
947 SV **cb; 1292 SV **cb;
… …
984 1329
985 if (PL_curcop != &PL_compiling) 1330 if (PL_curcop != &PL_compiling)
986 { 1331 {
987 SV **cb; 1332 SV **cb;
988 1333
989 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1334 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
990 { 1335 {
991 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1336 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
992 1337
993 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1338 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
994 { 1339 {
995 runops_proc_t old_runops = PL_runops;
996 dSP; 1340 dSP;
997 GV *gv = CvGV (cx->blk_sub.cv); 1341 GV *gv = CvGV (cx->blk_sub.cv);
998 SV *fullname = sv_2mortal (newSV (0)); 1342 SV *fullname = sv_2mortal (newSV (0));
999 1343
1000 if (isGV (gv)) 1344 if (isGV (gv))
… …
1005 SAVETMPS; 1349 SAVETMPS;
1006 EXTEND (SP, 3); 1350 EXTEND (SP, 3);
1007 PUSHMARK (SP); 1351 PUSHMARK (SP);
1008 PUSHs (&PL_sv_yes); 1352 PUSHs (&PL_sv_yes);
1009 PUSHs (fullname); 1353 PUSHs (fullname);
1010 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); 1354 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1011 PUTBACK; 1355 PUTBACK;
1012 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); 1356 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1013 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 1357 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1014 SPAGAIN; 1358 SPAGAIN;
1015 FREETMPS; 1359 FREETMPS;
… …
1018 } 1362 }
1019 1363
1020 oldcxix = cxstack_ix; 1364 oldcxix = cxstack_ix;
1021 } 1365 }
1022 1366
1023 if (cctx->flags & CC_TRACE_LINE) 1367 if (cctx_current->flags & CC_TRACE_LINE)
1024 { 1368 {
1025 dSP; 1369 dSP;
1026 1370
1027 PL_runops = RUNOPS_DEFAULT; 1371 PL_runops = RUNOPS_DEFAULT;
1028 ENTER; 1372 ENTER;
… …
1047 1391
1048 TAINT_NOT; 1392 TAINT_NOT;
1049 return 0; 1393 return 0;
1050} 1394}
1051 1395
1396static struct CoroSLF cctx_ssl_frame;
1397
1052static void 1398static void
1053prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx) 1399slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1054{ 1400{
1055 ta->prev = (struct coro *)cctx;
1056 ta->next = 0; 1401 ta->prev = 0;
1057} 1402}
1058 1403
1059/* inject a fake call to Coro::State::_cctx_init into the execution */ 1404static int
1060/* _cctx_init should be careful, as it could be called at almost any time */ 1405slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1061/* during execution of a perl program */
1062/* also initialises PL_top_env */
1063static void NOINLINE
1064cctx_prepare (pTHX_ coro_cctx *cctx)
1065{ 1406{
1066 dSP; 1407 *frame = cctx_ssl_frame;
1067 UNOP myop;
1068 1408
1409 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1410}
1411
1412/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1413static void ecb_noinline
1414cctx_prepare (pTHX)
1415{
1069 PL_top_env = &PL_start_env; 1416 PL_top_env = &PL_start_env;
1070 1417
1071 if (cctx->flags & CC_TRACE) 1418 if (cctx_current->flags & CC_TRACE)
1072 PL_runops = runops_trace; 1419 PL_runops = runops_trace;
1073 1420
1074 Zero (&myop, 1, UNOP); 1421 /* we already must be executing an SLF op, there is no other valid way
1075 myop.op_next = PL_op; 1422 * that can lead to creation of a new cctx */
1076 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1423 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1424 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1077 1425
1078 PUSHMARK (SP); 1426 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1079 EXTEND (SP, 2); 1427 cctx_ssl_frame = slf_frame;
1080 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1428
1081 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1429 slf_frame.prepare = slf_prepare_set_stacklevel;
1082 PUTBACK; 1430 slf_frame.check = slf_check_set_stacklevel;
1083 PL_op = (OP *)&myop;
1084 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1085 SPAGAIN;
1086} 1431}
1087 1432
1088/* the tail of transfer: execute stuff we can only do after a transfer */ 1433/* the tail of transfer: execute stuff we can only do after a transfer */
1089INLINE void 1434ecb_inline void
1090transfer_tail (pTHX) 1435transfer_tail (pTHX)
1091{ 1436{
1092 struct coro *next = (struct coro *)transfer_next;
1093 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1094 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1095
1096 free_coro_mortal (aTHX); 1437 free_coro_mortal (aTHX);
1097 UNLOCK; 1438}
1098 1439
1099 if (expect_false (next->throw)) 1440/* try to exit the same way perl's main function would do */
1100 { 1441/* we do not bother resetting the environment or other things *7
1101 SV *exception = sv_2mortal (next->throw); 1442/* that are not, uhm, essential */
1102 1443/* this obviously also doesn't work when perl is embedded */
1103 next->throw = 0; 1444static void ecb_noinline ecb_cold
1104 sv_setsv (ERRSV, exception); 1445perlish_exit (pTHX)
1105 croak (0); 1446{
1106 } 1447 int exitstatus = perl_destruct (PL_curinterp);
1448 perl_free (PL_curinterp);
1449 exit (exitstatus);
1107} 1450}
1108 1451
1109/* 1452/*
1110 * this is a _very_ stripped down perl interpreter ;) 1453 * this is a _very_ stripped down perl interpreter ;)
1111 */ 1454 */
… …
1118# endif 1461# endif
1119#endif 1462#endif
1120 { 1463 {
1121 dTHX; 1464 dTHX;
1122 1465
1123 /* we are the alternative tail to pp_set_stacklevel */ 1466 /* normally we would need to skip the entersub here */
1124 /* so do the same things here */ 1467 /* not doing so will re-execute it, which is exactly what we want */
1125 SSL_TAIL;
1126
1127 /* we now skip the op that did lead to transfer() */
1128 PL_op = PL_op->op_next; 1468 /* PL_nop = PL_nop->op_next */
1129 1469
1130 /* inject a fake subroutine call to cctx_init */ 1470 /* inject a fake subroutine call to cctx_init */
1131 cctx_prepare (aTHX_ (coro_cctx *)arg); 1471 cctx_prepare (aTHX);
1132 1472
1133 /* cctx_run is the alternative tail of transfer() */ 1473 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1135 1475
1136 /* somebody or something will hit me for both perl_run and PL_restartop */ 1476 /* somebody or something will hit me for both perl_run and PL_restartop */
1137 PL_restartop = PL_op; 1477 PL_restartop = PL_op;
1138 perl_run (PL_curinterp); 1478 perl_run (PL_curinterp);
1479 /*
1480 * Unfortunately, there is no way to get at the return values of the
1481 * coro body here, as perl_run destroys these. Likewise, we cannot catch
1482 * runtime errors here, as this is just a random interpreter, not a thread.
1483 */
1139 1484
1140 /* 1485 /*
1141 * If perl-run returns we assume exit() was being called or the coro 1486 * If perl-run returns we assume exit() was being called or the coro
1142 * fell off the end, which seems to be the only valid (non-bug) 1487 * fell off the end, which seems to be the only valid (non-bug)
1143 * reason for perl_run to return. We try to exit by jumping to the 1488 * reason for perl_run to return. We try to mimic whatever perl is normally
1144 * bootstrap-time "top" top_env, as we cannot restore the "main" 1489 * doing in that case. YMMV.
1145 * coroutine as Coro has no such concept
1146 */ 1490 */
1147 PL_top_env = main_top_env; 1491 perlish_exit (aTHX);
1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 } 1492 }
1150} 1493}
1151 1494
1152static coro_cctx * 1495static coro_cctx *
1153cctx_new () 1496cctx_new (void)
1154{ 1497{
1155 coro_cctx *cctx; 1498 coro_cctx *cctx;
1156 1499
1157 ++cctx_count; 1500 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx); 1501 New (0, cctx, 1, coro_cctx);
… …
1164 return cctx; 1507 return cctx;
1165} 1508}
1166 1509
1167/* create a new cctx only suitable as source */ 1510/* create a new cctx only suitable as source */
1168static coro_cctx * 1511static coro_cctx *
1169cctx_new_empty () 1512cctx_new_empty (void)
1170{ 1513{
1171 coro_cctx *cctx = cctx_new (); 1514 coro_cctx *cctx = cctx_new ();
1172 1515
1173 cctx->sptr = 0; 1516 cctx->stack.sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0); 1517 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175 1518
1176 return cctx; 1519 return cctx;
1177} 1520}
1178 1521
1179/* create a new cctx suitable as destination/running a perl interpreter */ 1522/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx * 1523static coro_cctx *
1181cctx_new_run () 1524cctx_new_run (void)
1182{ 1525{
1183 coro_cctx *cctx = cctx_new (); 1526 coro_cctx *cctx = cctx_new ();
1184 void *stack_start;
1185 size_t stack_size;
1186 1527
1187#if HAVE_MMAP 1528 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1189 /* mmap supposedly does allocate-on-write for us */
1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1191
1192 if (cctx->sptr != (void *)-1)
1193 {
1194 #if CORO_STACKGUARD
1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1196 #endif
1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1199 cctx->flags |= CC_MAPPED;
1200 } 1529 {
1201 else
1202#endif
1203 {
1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1205 New (0, cctx->sptr, cctx_stacksize, long);
1206
1207 if (!cctx->sptr)
1208 {
1209 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1530 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1210 _exit (EXIT_FAILURE); 1531 _exit (EXIT_FAILURE);
1211 }
1212
1213 stack_start = cctx->sptr;
1214 stack_size = cctx->ssize;
1215 } 1532 }
1216 1533
1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1534 coro_create (&cctx->cctx, cctx_run, (void *)cctx, cctx->stack.sptr, cctx->stack.ssze);
1222 1535
1223 return cctx; 1536 return cctx;
1224} 1537}
1225 1538
1226static void 1539static void
1227cctx_destroy (coro_cctx *cctx) 1540cctx_destroy (coro_cctx *cctx)
1228{ 1541{
1229 if (!cctx) 1542 if (!cctx)
1230 return; 1543 return;
1231 1544
1545 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1546
1232 --cctx_count; 1547 --cctx_count;
1233 coro_destroy (&cctx->cctx); 1548 coro_destroy (&cctx->cctx);
1234 1549
1235 /* coro_transfer creates new, empty cctx's */ 1550 coro_stack_free (&cctx->stack);
1236 if (cctx->sptr)
1237 {
1238 #if CORO_USE_VALGRIND
1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1240 #endif
1241
1242#if HAVE_MMAP
1243 if (cctx->flags & CC_MAPPED)
1244 munmap (cctx->sptr, cctx->ssize);
1245 else
1246#endif
1247 Safefree (cctx->sptr);
1248 }
1249 1551
1250 Safefree (cctx); 1552 Safefree (cctx);
1251} 1553}
1252 1554
1253/* wether this cctx should be destructed */ 1555/* wether this cctx should be destructed */
1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) 1556#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1255 1557
1256static coro_cctx * 1558static coro_cctx *
1257cctx_get (pTHX) 1559cctx_get (pTHX)
1258{ 1560{
1259 while (expect_true (cctx_first)) 1561 while (ecb_expect_true (cctx_first))
1260 { 1562 {
1261 coro_cctx *cctx = cctx_first; 1563 coro_cctx *cctx = cctx_first;
1262 cctx_first = cctx->next; 1564 cctx_first = cctx->next;
1263 --cctx_idle; 1565 --cctx_idle;
1264 1566
1265 if (expect_true (!CCTX_EXPIRED (cctx))) 1567 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1266 return cctx; 1568 return cctx;
1267 1569
1268 cctx_destroy (cctx); 1570 cctx_destroy (cctx);
1269 } 1571 }
1270 1572
… …
1272} 1574}
1273 1575
1274static void 1576static void
1275cctx_put (coro_cctx *cctx) 1577cctx_put (coro_cctx *cctx)
1276{ 1578{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); 1579 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->stack.sptr));
1278 1580
1279 /* free another cctx if overlimit */ 1581 /* free another cctx if overlimit */
1280 if (expect_false (cctx_idle >= cctx_max_idle)) 1582 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1281 { 1583 {
1282 coro_cctx *first = cctx_first; 1584 coro_cctx *first = cctx_first;
1283 cctx_first = first->next; 1585 cctx_first = first->next;
1284 --cctx_idle; 1586 --cctx_idle;
1285 1587
… …
1294/** coroutine switching *****************************************************/ 1596/** coroutine switching *****************************************************/
1295 1597
1296static void 1598static void
1297transfer_check (pTHX_ struct coro *prev, struct coro *next) 1599transfer_check (pTHX_ struct coro *prev, struct coro *next)
1298{ 1600{
1601 /* TODO: throwing up here is considered harmful */
1602
1299 if (expect_true (prev != next)) 1603 if (ecb_expect_true (prev != next))
1300 { 1604 {
1301 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1605 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1302 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1606 croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1303 1607
1304 if (expect_false (next->flags & CF_RUNNING)) 1608 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1305 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1306
1307 if (expect_false (next->flags & CF_DESTROYED))
1308 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1609 croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1309 1610
1310#if !PERL_VERSION_ATLEAST (5,10,0) 1611#if !PERL_VERSION_ATLEAST (5,10,0)
1311 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1612 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1312 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1613 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1313#endif 1614#endif
1314 } 1615 }
1315} 1616}
1316 1617
1317/* always use the TRANSFER macro */ 1618/* always use the TRANSFER macro */
1318static void NOINLINE 1619static void ecb_noinline /* noinline so we have a fixed stackframe */
1319transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1620transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1320{ 1621{
1321 dSTACKLEVEL; 1622 dSTACKLEVEL;
1322 1623
1323 /* sometimes transfer is only called to set idle_sp */ 1624 /* sometimes transfer is only called to set idle_sp */
1324 if (expect_false (!next)) 1625 if (ecb_expect_false (!prev))
1325 { 1626 {
1326 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1627 cctx_current->idle_sp = STACKLEVEL;
1327 assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ 1628 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1328 } 1629 }
1329 else if (expect_true (prev != next)) 1630 else if (ecb_expect_true (prev != next))
1330 { 1631 {
1331 coro_cctx *prev__cctx; 1632 coro_cctx *cctx_prev;
1332 1633
1333 if (expect_false (prev->flags & CF_NEW)) 1634 if (ecb_expect_false (prev->flags & CF_NEW))
1334 { 1635 {
1335 /* create a new empty/source context */ 1636 /* create a new empty/source context */
1336 prev->cctx = cctx_new_empty ();
1337 prev->flags &= ~CF_NEW; 1637 prev->flags &= ~CF_NEW;
1338 prev->flags |= CF_RUNNING; 1638 prev->flags |= CF_RUNNING;
1339 } 1639 }
1340 1640
1341 prev->flags &= ~CF_RUNNING; 1641 prev->flags &= ~CF_RUNNING;
1342 next->flags |= CF_RUNNING; 1642 next->flags |= CF_RUNNING;
1343 1643
1344 LOCK;
1345
1346 /* first get rid of the old state */ 1644 /* first get rid of the old state */
1347 save_perl (aTHX_ prev); 1645 save_perl (aTHX_ prev);
1348 1646
1349 if (expect_false (next->flags & CF_NEW)) 1647 if (ecb_expect_false (next->flags & CF_NEW))
1350 { 1648 {
1351 /* need to start coroutine */ 1649 /* need to start coroutine */
1352 next->flags &= ~CF_NEW; 1650 next->flags &= ~CF_NEW;
1353 /* setup coroutine call */ 1651 /* setup coroutine call */
1354 coro_setup (aTHX_ next); 1652 init_perl (aTHX_ next);
1355 } 1653 }
1356 else 1654 else
1357 load_perl (aTHX_ next); 1655 load_perl (aTHX_ next);
1358 1656
1359 prev__cctx = prev->cctx;
1360
1361 /* possibly untie and reuse the cctx */ 1657 /* possibly untie and reuse the cctx */
1362 if (expect_true ( 1658 if (ecb_expect_true (
1363 prev__cctx->idle_sp == STACKLEVEL 1659 cctx_current->idle_sp == STACKLEVEL
1364 && !(prev__cctx->flags & CC_TRACE) 1660 && !(cctx_current->flags & CC_TRACE)
1365 && !force_cctx 1661 && !force_cctx
1366 )) 1662 ))
1367 { 1663 {
1368 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1664 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); 1665 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1370 1666
1371 prev->cctx = 0;
1372
1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1667 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1668 /* without this the next cctx_get might destroy the running cctx while still in use */
1375 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1669 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1376 if (!next->cctx) 1670 if (ecb_expect_true (!next->cctx))
1377 next->cctx = cctx_get (aTHX); 1671 next->cctx = cctx_get (aTHX);
1378 1672
1379 cctx_put (prev__cctx); 1673 cctx_put (cctx_current);
1380 } 1674 }
1675 else
1676 prev->cctx = cctx_current;
1381 1677
1382 ++next->usecount; 1678 ++next->usecount;
1383 1679
1384 if (expect_true (!next->cctx)) 1680 cctx_prev = cctx_current;
1385 next->cctx = cctx_get (aTHX); 1681 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1386 1682
1387 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1683 next->cctx = 0;
1388 transfer_next = next;
1389 1684
1390 if (expect_false (prev__cctx != next->cctx)) 1685 if (ecb_expect_false (cctx_prev != cctx_current))
1391 { 1686 {
1392 prev__cctx->top_env = PL_top_env; 1687 cctx_prev->top_env = PL_top_env;
1393 PL_top_env = next->cctx->top_env; 1688 PL_top_env = cctx_current->top_env;
1394 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1689 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1395 } 1690 }
1396 1691
1397 transfer_tail (aTHX); 1692 transfer_tail (aTHX);
1398 } 1693 }
1399} 1694}
… …
1401#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1696#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1402#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1697#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1403 1698
1404/** high level stuff ********************************************************/ 1699/** high level stuff ********************************************************/
1405 1700
1701/* this function is actually Coro, not Coro::State, but we call it from here */
1702/* because it is convenient - but it hasn't been declared yet for that reason */
1406static int 1703static void
1704coro_call_on_destroy (pTHX_ struct coro *coro);
1705
1706static void
1407coro_state_destroy (pTHX_ struct coro *coro) 1707coro_state_destroy (pTHX_ struct coro *coro)
1408{ 1708{
1409 if (coro->flags & CF_DESTROYED) 1709 if (coro->flags & CF_ZOMBIE)
1410 return 0; 1710 return;
1411 1711
1712 slf_destroy (aTHX_ coro);
1713
1412 coro->flags |= CF_DESTROYED; 1714 coro->flags |= CF_ZOMBIE;
1413 1715
1414 if (coro->flags & CF_READY) 1716 if (coro->flags & CF_READY)
1415 { 1717 {
1416 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1718 /* reduce nready, as destroying a ready coro effectively unreadies it */
1417 /* alternative: look through all ready queues and remove the coro */ 1719 /* alternative: look through all ready queues and remove the coro */
1418 LOCK;
1419 --coro_nready; 1720 --coro_nready;
1420 UNLOCK;
1421 } 1721 }
1422 else 1722 else
1423 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1723 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1424
1425 if (coro->mainstack && coro->mainstack != main_mainstack)
1426 {
1427 struct coro temp;
1428
1429 if (coro->flags & CF_RUNNING)
1430 croak ("FATAL: tried to destroy currently running coroutine");
1431
1432 save_perl (aTHX_ &temp);
1433 load_perl (aTHX_ coro);
1434
1435 coro_destruct (aTHX_ coro);
1436
1437 load_perl (aTHX_ &temp);
1438
1439 coro->slot = 0;
1440 }
1441
1442 cctx_destroy (coro->cctx);
1443 SvREFCNT_dec (coro->args);
1444 1724
1445 if (coro->next) coro->next->prev = coro->prev; 1725 if (coro->next) coro->next->prev = coro->prev;
1446 if (coro->prev) coro->prev->next = coro->next; 1726 if (coro->prev) coro->prev->next = coro->next;
1447 if (coro == coro_first) coro_first = coro->next; 1727 if (coro == coro_first) coro_first = coro->next;
1448 1728
1449 return 1; 1729 if (coro->mainstack
1730 && coro->mainstack != main_mainstack
1731 && coro->slot
1732 && !PL_dirty)
1733 destroy_perl (aTHX_ coro);
1734
1735 cctx_destroy (coro->cctx);
1736 SvREFCNT_dec (coro->startcv);
1737 SvREFCNT_dec (coro->args);
1738 SvREFCNT_dec (coro->swap_sv);
1739 SvREFCNT_dec (CORO_THROW);
1740
1741 coro_call_on_destroy (aTHX_ coro);
1742
1743 /* more destruction mayhem in coro_state_free */
1450} 1744}
1451 1745
1452static int 1746static int
1453coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1747coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1454{ 1748{
1455 struct coro *coro = (struct coro *)mg->mg_ptr; 1749 struct coro *coro = (struct coro *)mg->mg_ptr;
1456 mg->mg_ptr = 0; 1750 mg->mg_ptr = 0;
1457 1751
1458 coro->hv = 0;
1459
1460 if (--coro->refcnt < 0)
1461 {
1462 coro_state_destroy (aTHX_ coro); 1752 coro_state_destroy (aTHX_ coro);
1753 SvREFCNT_dec (coro->on_destroy);
1754 SvREFCNT_dec (coro->status);
1755
1463 Safefree (coro); 1756 Safefree (coro);
1464 }
1465 1757
1466 return 0; 1758 return 0;
1467} 1759}
1468 1760
1469static int 1761static int ecb_cold
1470coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1762coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1471{ 1763{
1472 struct coro *coro = (struct coro *)mg->mg_ptr; 1764 /* called when perl clones the current process the slow way (windows process emulation) */
1473 1765 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1474 ++coro->refcnt; 1766 mg->mg_ptr = 0;
1767 mg->mg_virtual = 0;
1475 1768
1476 return 0; 1769 return 0;
1477} 1770}
1478 1771
1479static MGVTBL coro_state_vtbl = { 1772static MGVTBL coro_state_vtbl = {
… …
1486# define MGf_DUP 0 1779# define MGf_DUP 0
1487#endif 1780#endif
1488}; 1781};
1489 1782
1490static void 1783static void
1491prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1784prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1492{ 1785{
1493 ta->prev = SvSTATE (prev_sv); 1786 ta->prev = SvSTATE (prev_sv);
1494 ta->next = SvSTATE (next_sv); 1787 ta->next = SvSTATE (next_sv);
1495 TRANSFER_CHECK (*ta); 1788 TRANSFER_CHECK (*ta);
1496} 1789}
1497 1790
1498static void 1791static void
1499api_transfer (SV *prev_sv, SV *next_sv) 1792api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1500{ 1793{
1501 dTHX;
1502 struct transfer_args ta; 1794 struct coro_transfer_args ta;
1503 1795
1504 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1796 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1505 TRANSFER (ta, 1); 1797 TRANSFER (ta, 1);
1506} 1798}
1507 1799
1508/** Coro ********************************************************************/ 1800/** Coro ********************************************************************/
1509 1801
1510static void 1802ecb_inline void
1511coro_enq (pTHX_ SV *coro_sv) 1803coro_enq (pTHX_ struct coro *coro)
1512{ 1804{
1513 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1805 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1514}
1515 1806
1516static SV * 1807 SvREFCNT_inc_NN (coro->hv);
1808
1809 coro->next_ready = 0;
1810 *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
1811 ready [1] = coro;
1812}
1813
1814ecb_inline struct coro *
1517coro_deq (pTHX) 1815coro_deq (pTHX)
1518{ 1816{
1519 int prio; 1817 int prio;
1520 1818
1521 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1819 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1522 if (AvFILLp (coro_ready [prio]) >= 0) 1820 {
1523 return av_shift (coro_ready [prio]); 1821 struct coro **ready = coro_ready [prio];
1822
1823 if (ready [0])
1824 {
1825 struct coro *coro = ready [0];
1826 ready [0] = coro->next_ready;
1827 return coro;
1828 }
1829 }
1524 1830
1525 return 0; 1831 return 0;
1526} 1832}
1527 1833
1834static void
1835invoke_sv_ready_hook_helper (void)
1836{
1837 dTHX;
1838 dSP;
1839
1840 ENTER;
1841 SAVETMPS;
1842
1843 PUSHMARK (SP);
1844 PUTBACK;
1845 call_sv (coro_readyhook, G_VOID | G_DISCARD);
1846
1847 FREETMPS;
1848 LEAVE;
1849}
1850
1528static int 1851static int
1529api_ready (SV *coro_sv) 1852api_ready (pTHX_ SV *coro_sv)
1530{ 1853{
1531 dTHX;
1532 struct coro *coro;
1533 SV *sv_hook;
1534 void (*xs_hook)(void);
1535
1536 if (SvROK (coro_sv))
1537 coro_sv = SvRV (coro_sv);
1538
1539 coro = SvSTATE (coro_sv); 1854 struct coro *coro = SvSTATE (coro_sv);
1540 1855
1541 if (coro->flags & CF_READY) 1856 if (coro->flags & CF_READY)
1542 return 0; 1857 return 0;
1543 1858
1544 coro->flags |= CF_READY; 1859 coro->flags |= CF_READY;
1545 1860
1546 LOCK; 1861 coro_enq (aTHX_ coro);
1547 1862
1548 sv_hook = coro_nready ? 0 : coro_readyhook; 1863 if (!coro_nready++)
1549 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1864 if (coroapi.readyhook)
1550 1865 coroapi.readyhook ();
1551 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1552 ++coro_nready;
1553
1554 UNLOCK;
1555
1556 if (sv_hook)
1557 {
1558 dSP;
1559
1560 ENTER;
1561 SAVETMPS;
1562
1563 PUSHMARK (SP);
1564 PUTBACK;
1565 call_sv (sv_hook, G_DISCARD);
1566 SPAGAIN;
1567
1568 FREETMPS;
1569 LEAVE;
1570 }
1571
1572 if (xs_hook)
1573 xs_hook ();
1574 1866
1575 return 1; 1867 return 1;
1576} 1868}
1577 1869
1578static int 1870static int
1579api_is_ready (SV *coro_sv) 1871api_is_ready (pTHX_ SV *coro_sv)
1580{ 1872{
1581 dTHX;
1582
1583 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1873 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1584} 1874}
1585 1875
1586INLINE void 1876/* expects to own a reference to next->hv */
1877ecb_inline void
1587prepare_schedule (pTHX_ struct transfer_args *ta) 1878prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1588{ 1879{
1589 SV *prev_sv, *next_sv;
1590
1591 for (;;)
1592 {
1593 LOCK;
1594 next_sv = coro_deq (aTHX);
1595
1596 /* nothing to schedule: call the idle handler */
1597 if (expect_false (!next_sv))
1598 {
1599 dSP;
1600 UNLOCK;
1601
1602 ENTER;
1603 SAVETMPS;
1604
1605 PUSHMARK (SP);
1606 PUTBACK;
1607 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1608 SPAGAIN;
1609
1610 FREETMPS;
1611 LEAVE;
1612 continue;
1613 }
1614
1615 ta->next = SvSTATE (next_sv);
1616
1617 /* cannot transfer to destroyed coros, skip and look for next */
1618 if (expect_false (ta->next->flags & CF_DESTROYED))
1619 {
1620 UNLOCK;
1621 SvREFCNT_dec (next_sv);
1622 /* coro_nready has already been taken care of by destroy */
1623 continue;
1624 }
1625
1626 --coro_nready;
1627 UNLOCK;
1628 break;
1629 }
1630
1631 /* free this only after the transfer */
1632 prev_sv = SvRV (coro_current); 1880 SV *prev_sv = SvRV (coro_current);
1881
1633 ta->prev = SvSTATE (prev_sv); 1882 ta->prev = SvSTATE_hv (prev_sv);
1883 ta->next = next;
1884
1634 TRANSFER_CHECK (*ta); 1885 TRANSFER_CHECK (*ta);
1635 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1886
1636 ta->next->flags &= ~CF_READY;
1637 SvRV_set (coro_current, next_sv); 1887 SvRV_set (coro_current, (SV *)next->hv);
1638 1888
1639 LOCK;
1640 free_coro_mortal (aTHX); 1889 free_coro_mortal (aTHX);
1641 coro_mortal = prev_sv; 1890 coro_mortal = prev_sv;
1642 UNLOCK;
1643} 1891}
1644 1892
1645INLINE void 1893static void
1894prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1895{
1896 for (;;)
1897 {
1898 struct coro *next = coro_deq (aTHX);
1899
1900 if (ecb_expect_true (next))
1901 {
1902 /* cannot transfer to destroyed coros, skip and look for next */
1903 if (ecb_expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1904 SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1905 else
1906 {
1907 next->flags &= ~CF_READY;
1908 --coro_nready;
1909
1910 prepare_schedule_to (aTHX_ ta, next);
1911 break;
1912 }
1913 }
1914 else
1915 {
1916 /* nothing to schedule: call the idle handler */
1917 if (SvROK (sv_idle)
1918 && SvOBJECT (SvRV (sv_idle)))
1919 {
1920 if (SvRV (sv_idle) == SvRV (coro_current))
1921 croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
1922
1923 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1924 api_ready (aTHX_ SvRV (sv_idle));
1925 --coro_nready;
1926 }
1927 else
1928 {
1929 /* TODO: deprecated, remove, cannot work reliably *//*D*/
1930 dSP;
1931
1932 ENTER;
1933 SAVETMPS;
1934
1935 PUSHMARK (SP);
1936 PUTBACK;
1937 call_sv (sv_idle, G_VOID | G_DISCARD);
1938
1939 FREETMPS;
1940 LEAVE;
1941 }
1942 }
1943 }
1944}
1945
1946ecb_inline void
1646prepare_cede (pTHX_ struct transfer_args *ta) 1947prepare_cede (pTHX_ struct coro_transfer_args *ta)
1647{ 1948{
1648 api_ready (coro_current); 1949 api_ready (aTHX_ coro_current);
1649 prepare_schedule (aTHX_ ta); 1950 prepare_schedule (aTHX_ ta);
1650} 1951}
1651 1952
1953ecb_inline void
1954prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1955{
1956 SV *prev = SvRV (coro_current);
1957
1958 if (coro_nready)
1959 {
1960 prepare_schedule (aTHX_ ta);
1961 api_ready (aTHX_ prev);
1962 }
1963 else
1964 prepare_nop (aTHX_ ta);
1965}
1966
1967static void
1968api_schedule (pTHX)
1969{
1970 struct coro_transfer_args ta;
1971
1972 prepare_schedule (aTHX_ &ta);
1973 TRANSFER (ta, 1);
1974}
1975
1976static void
1977api_schedule_to (pTHX_ SV *coro_sv)
1978{
1979 struct coro_transfer_args ta;
1980 struct coro *next = SvSTATE (coro_sv);
1981
1982 SvREFCNT_inc_NN (coro_sv);
1983 prepare_schedule_to (aTHX_ &ta, next);
1984}
1985
1652static int 1986static int
1653prepare_cede_notself (pTHX_ struct transfer_args *ta) 1987api_cede (pTHX)
1654{ 1988{
1655 if (coro_nready) 1989 struct coro_transfer_args ta;
1656 { 1990
1657 SV *prev = SvRV (coro_current);
1658 prepare_schedule (aTHX_ ta); 1991 prepare_cede (aTHX_ &ta);
1659 api_ready (prev); 1992
1993 if (ecb_expect_true (ta.prev != ta.next))
1994 {
1995 TRANSFER (ta, 1);
1660 return 1; 1996 return 1;
1661 } 1997 }
1662 else 1998 else
1663 return 0; 1999 return 0;
1664} 2000}
1665 2001
1666static void
1667api_schedule (void)
1668{
1669 dTHX;
1670 struct transfer_args ta;
1671
1672 prepare_schedule (aTHX_ &ta);
1673 TRANSFER (ta, 1);
1674}
1675
1676static int 2002static int
1677api_cede (void) 2003api_cede_notself (pTHX)
1678{ 2004{
1679 dTHX; 2005 if (coro_nready)
2006 {
1680 struct transfer_args ta; 2007 struct coro_transfer_args ta;
1681 2008
1682 prepare_cede (aTHX_ &ta); 2009 prepare_cede_notself (aTHX_ &ta);
1683
1684 if (expect_true (ta.prev != ta.next))
1685 {
1686 TRANSFER (ta, 1); 2010 TRANSFER (ta, 1);
1687 return 1; 2011 return 1;
1688 } 2012 }
1689 else 2013 else
1690 return 0; 2014 return 0;
1691} 2015}
1692 2016
1693static int 2017static void
1694api_cede_notself (void)
1695{
1696 dTHX;
1697 struct transfer_args ta;
1698
1699 if (prepare_cede_notself (aTHX_ &ta))
1700 {
1701 TRANSFER (ta, 1);
1702 return 1;
1703 }
1704 else
1705 return 0;
1706}
1707
1708static void
1709api_trace (SV *coro_sv, int flags) 2018api_trace (pTHX_ SV *coro_sv, int flags)
1710{ 2019{
1711 dTHX;
1712 struct coro *coro = SvSTATE (coro_sv); 2020 struct coro *coro = SvSTATE (coro_sv);
2021
2022 if (coro->flags & CF_RUNNING)
2023 croak ("cannot enable tracing on a running coroutine, caught");
1713 2024
1714 if (flags & CC_TRACE) 2025 if (flags & CC_TRACE)
1715 { 2026 {
1716 if (!coro->cctx) 2027 if (!coro->cctx)
1717 coro->cctx = cctx_new_run (); 2028 coro->cctx = cctx_new_run ();
1718 else if (!(coro->cctx->flags & CC_TRACE)) 2029 else if (!(coro->cctx->flags & CC_TRACE))
1719 croak ("cannot enable tracing on coroutine with custom stack"); 2030 croak ("cannot enable tracing on coroutine with custom stack, caught");
1720 2031
1721 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2032 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1722 } 2033 }
1723 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2034 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1724 { 2035 {
… …
1729 else 2040 else
1730 coro->slot->runops = RUNOPS_DEFAULT; 2041 coro->slot->runops = RUNOPS_DEFAULT;
1731 } 2042 }
1732} 2043}
1733 2044
1734#if 0 2045static void
2046coro_push_av (pTHX_ AV *av, I32 gimme_v)
2047{
2048 if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
2049 {
2050 dSP;
2051
2052 if (gimme_v == G_SCALAR)
2053 XPUSHs (AvARRAY (av)[AvFILLp (av)]);
2054 else
2055 {
2056 int i;
2057 EXTEND (SP, AvFILLp (av) + 1);
2058
2059 for (i = 0; i <= AvFILLp (av); ++i)
2060 PUSHs (AvARRAY (av)[i]);
2061 }
2062
2063 PUTBACK;
2064 }
2065}
2066
2067static void
2068coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
2069{
2070 if (!coro->on_destroy)
2071 coro->on_destroy = newAV ();
2072
2073 av_push (coro->on_destroy, cb);
2074}
2075
2076static void
2077slf_destroy_join (pTHX_ struct CoroSLF *frame)
2078{
2079 SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
2080}
2081
1735static int 2082static int
1736coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2083slf_check_join (pTHX_ struct CoroSLF *frame)
1737{ 2084{
1738 AV *padlist; 2085 struct coro *coro = (struct coro *)frame->data;
1739 AV *av = (AV *)mg->mg_obj;
1740 2086
1741 abort (); 2087 if (!coro->status)
2088 return 1;
2089
2090 frame->destroy = 0;
2091
2092 coro_push_av (aTHX_ coro->status, GIMME_V);
2093
2094 SvREFCNT_dec ((SV *)coro->hv);
1742 2095
1743 return 0; 2096 return 0;
1744} 2097}
1745 2098
1746static MGVTBL coro_gensub_vtbl = { 2099static void
1747 0, 0, 0, 0, 2100slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1748 coro_gensub_free 2101{
1749}; 2102 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1750#endif 2103
2104 if (items > 1)
2105 croak ("join called with too many arguments");
2106
2107 if (coro->status)
2108 frame->prepare = prepare_nop;
2109 else
2110 {
2111 coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
2112 frame->prepare = prepare_schedule;
2113 }
2114
2115 frame->check = slf_check_join;
2116 frame->destroy = slf_destroy_join;
2117 frame->data = (void *)coro;
2118 SvREFCNT_inc (coro->hv);
2119}
2120
2121static void
2122coro_call_on_destroy (pTHX_ struct coro *coro)
2123{
2124 AV *od = coro->on_destroy;
2125
2126 if (!od)
2127 return;
2128
2129 coro->on_destroy = 0;
2130 sv_2mortal ((SV *)od);
2131
2132 while (AvFILLp (od) >= 0)
2133 {
2134 SV *cb = sv_2mortal (av_pop (od));
2135
2136 /* coro hv's (and only hv's at the moment) are supported as well */
2137 if (SvSTATEhv_p (aTHX_ cb))
2138 api_ready (aTHX_ cb);
2139 else
2140 {
2141 dSP; /* don't disturb outer sp */
2142 PUSHMARK (SP);
2143
2144 if (coro->status)
2145 {
2146 PUTBACK;
2147 coro_push_av (aTHX_ coro->status, G_ARRAY);
2148 SPAGAIN;
2149 }
2150
2151 PUTBACK;
2152 call_sv (cb, G_VOID | G_DISCARD);
2153 }
2154 }
2155}
2156
2157static void
2158coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
2159{
2160 AV *av;
2161
2162 if (coro->status)
2163 {
2164 av = coro->status;
2165 av_clear (av);
2166 }
2167 else
2168 av = coro->status = newAV ();
2169
2170 /* items are actually not so common, so optimise for this case */
2171 if (items)
2172 {
2173 int i;
2174
2175 av_extend (av, items - 1);
2176
2177 for (i = 0; i < items; ++i)
2178 av_push (av, SvREFCNT_inc_NN (arg [i]));
2179 }
2180}
2181
2182static void
2183slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
2184{
2185 av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2186 api_ready (aTHX_ sv_manager);
2187
2188 frame->prepare = prepare_schedule;
2189 frame->check = slf_check_repeat;
2190
2191 /* as a minor optimisation, we could unwind all stacks here */
2192 /* but that puts extra pressure on pp_slf, and is not worth much */
2193 /*coro_unwind_stacks (aTHX);*/
2194}
2195
2196static void
2197slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2198{
2199 HV *coro_hv = (HV *)SvRV (coro_current);
2200
2201 coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
2202 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2203}
2204
2205static void
2206slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2207{
2208 HV *coro_hv;
2209 struct coro *coro;
2210
2211 if (items <= 0)
2212 croak ("Coro::cancel called without coro object,");
2213
2214 coro = SvSTATE (arg [0]);
2215 coro_hv = coro->hv;
2216
2217 coro_set_status (aTHX_ coro, arg + 1, items - 1);
2218
2219 if (ecb_expect_false (coro->flags & CF_NOCANCEL))
2220 {
2221 /* coro currently busy cancelling something, so just notify it */
2222 coro->slf_frame.data = (void *)coro;
2223
2224 frame->prepare = prepare_nop;
2225 frame->check = slf_check_nop;
2226 }
2227 else if (coro_hv == (HV *)SvRV (coro_current))
2228 {
2229 /* cancelling the current coro is allowed, and equals terminate */
2230 slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
2231 }
2232 else
2233 {
2234 struct coro *self = SvSTATE_current;
2235
2236 /* otherwise we cancel directly, purely for speed reasons
2237 * unfortunately, this requires some magic trickery, as
2238 * somebody else could cancel us, so we have to fight the cancellation.
2239 * this is ugly, and hopefully fully worth the extra speed.
2240 * besides, I can't get the slow-but-safe version working...
2241 */
2242 slf_frame.data = 0;
2243 self->flags |= CF_NOCANCEL;
2244 coro_state_destroy (aTHX_ coro);
2245 self->flags &= ~CF_NOCANCEL;
2246
2247 if (slf_frame.data)
2248 {
2249 /* while we were busy we have been cancelled, so terminate */
2250 slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
2251 }
2252 else
2253 {
2254 frame->prepare = prepare_nop;
2255 frame->check = slf_check_nop;
2256 }
2257 }
2258}
2259
2260static int
2261slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
2262{
2263 frame->prepare = 0;
2264 coro_unwind_stacks (aTHX);
2265
2266 slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
2267
2268 return 1;
2269}
2270
2271static int
2272safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
2273{
2274 if (coro->cctx)
2275 croak ("coro inside C callback, unable to cancel at this time, caught");
2276
2277 if (coro->flags & CF_NEW)
2278 {
2279 coro_set_status (aTHX_ coro, arg, items);
2280 coro_state_destroy (aTHX_ coro);
2281 }
2282 else
2283 {
2284 if (!coro->slf_frame.prepare)
2285 croak ("coro outside an SLF function, unable to cancel at this time, caught");
2286
2287 slf_destroy (aTHX_ coro);
2288
2289 coro_set_status (aTHX_ coro, arg, items);
2290 coro->slf_frame.prepare = prepare_nop;
2291 coro->slf_frame.check = slf_check_safe_cancel;
2292
2293 api_ready (aTHX_ (SV *)coro->hv);
2294 }
2295
2296 return 1;
2297}
2298
2299/*****************************************************************************/
2300/* async pool handler */
2301
2302static int
2303slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
2304{
2305 HV *hv = (HV *)SvRV (coro_current);
2306 struct coro *coro = (struct coro *)frame->data;
2307
2308 if (!coro->invoke_cb)
2309 return 1; /* loop till we have invoke */
2310 else
2311 {
2312 hv_store (hv, "desc", sizeof ("desc") - 1,
2313 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2314
2315 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2316
2317 {
2318 dSP;
2319 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
2320 PUTBACK;
2321 }
2322
2323 SvREFCNT_dec (GvAV (PL_defgv));
2324 GvAV (PL_defgv) = coro->invoke_av;
2325 coro->invoke_av = 0;
2326
2327 return 0;
2328 }
2329}
2330
2331static void
2332slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2333{
2334 HV *hv = (HV *)SvRV (coro_current);
2335 struct coro *coro = SvSTATE_hv ((SV *)hv);
2336
2337 if (ecb_expect_true (coro->saved_deffh))
2338 {
2339 /* subsequent iteration */
2340 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2341 coro->saved_deffh = 0;
2342
2343 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2344 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2345 {
2346 slf_init_terminate_cancel_common (aTHX_ frame, hv);
2347 return;
2348 }
2349 else
2350 {
2351 av_clear (GvAV (PL_defgv));
2352 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
2353
2354 coro->prio = 0;
2355
2356 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2357 api_trace (aTHX_ coro_current, 0);
2358
2359 frame->prepare = prepare_schedule;
2360 av_push (av_async_pool, SvREFCNT_inc (hv));
2361 }
2362 }
2363 else
2364 {
2365 /* first iteration, simply fall through */
2366 frame->prepare = prepare_nop;
2367 }
2368
2369 frame->check = slf_check_pool_handler;
2370 frame->data = (void *)coro;
2371}
2372
2373/*****************************************************************************/
2374/* rouse callback */
2375
2376#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
2377
2378static void
2379coro_rouse_callback (pTHX_ CV *cv)
2380{
2381 dXSARGS;
2382 SV *data = (SV *)S_GENSUB_ARG;
2383
2384 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2385 {
2386 /* first call, set args */
2387 SV *coro = SvRV (data);
2388 AV *av = newAV ();
2389
2390 SvRV_set (data, (SV *)av);
2391
2392 /* better take a full copy of the arguments */
2393 while (items--)
2394 av_store (av, items, newSVsv (ST (items)));
2395
2396 api_ready (aTHX_ coro);
2397 SvREFCNT_dec (coro);
2398 }
2399
2400 XSRETURN_EMPTY;
2401}
2402
2403static int
2404slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
2405{
2406 SV *data = (SV *)frame->data;
2407
2408 if (CORO_THROW)
2409 return 0;
2410
2411 if (SvTYPE (SvRV (data)) != SVt_PVAV)
2412 return 1;
2413
2414 /* now push all results on the stack */
2415 {
2416 dSP;
2417 AV *av = (AV *)SvRV (data);
2418 int i;
2419
2420 EXTEND (SP, AvFILLp (av) + 1);
2421 for (i = 0; i <= AvFILLp (av); ++i)
2422 PUSHs (sv_2mortal (AvARRAY (av)[i]));
2423
2424 /* we have stolen the elements, so set length to zero and free */
2425 AvFILLp (av) = -1;
2426 av_undef (av);
2427
2428 PUTBACK;
2429 }
2430
2431 return 0;
2432}
2433
2434static void
2435slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436{
2437 SV *cb;
2438
2439 if (items)
2440 cb = arg [0];
2441 else
2442 {
2443 struct coro *coro = SvSTATE_current;
2444
2445 if (!coro->rouse_cb)
2446 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2447
2448 cb = sv_2mortal (coro->rouse_cb);
2449 coro->rouse_cb = 0;
2450 }
2451
2452 if (!SvROK (cb)
2453 || SvTYPE (SvRV (cb)) != SVt_PVCV
2454 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2455 croak ("Coro::rouse_wait called with illegal callback argument,");
2456
2457 {
2458 CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2459 SV *data = (SV *)S_GENSUB_ARG;
2460
2461 frame->data = (void *)data;
2462 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2463 frame->check = slf_check_rouse_wait;
2464 }
2465}
2466
2467static SV *
2468coro_new_rouse_cb (pTHX)
2469{
2470 HV *hv = (HV *)SvRV (coro_current);
2471 struct coro *coro = SvSTATE_hv (hv);
2472 SV *data = newRV_inc ((SV *)hv);
2473 SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2474
2475 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2476 SvREFCNT_dec (data); /* magicext increases the refcount */
2477
2478 SvREFCNT_dec (coro->rouse_cb);
2479 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2480
2481 return cb;
2482}
2483
2484/*****************************************************************************/
2485/* schedule-like-function opcode (SLF) */
2486
2487static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2488static const CV *slf_cv;
2489static SV **slf_argv;
2490static int slf_argc, slf_arga; /* count, allocated */
2491static I32 slf_ax; /* top of stack, for restore */
2492
2493/* this restores the stack in the case we patched the entersub, to */
2494/* recreate the stack frame as perl will on following calls */
2495/* since entersub cleared the stack */
2496static OP *
2497pp_restore (pTHX)
2498{
2499 int i;
2500 SV **SP = PL_stack_base + slf_ax;
2501
2502 PUSHMARK (SP);
2503
2504 EXTEND (SP, slf_argc + 1);
2505
2506 for (i = 0; i < slf_argc; ++i)
2507 PUSHs (sv_2mortal (slf_argv [i]));
2508
2509 PUSHs ((SV *)CvGV (slf_cv));
2510
2511 RETURNOP (slf_restore.op_first);
2512}
2513
2514static void
2515slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2516{
2517 SV **arg = (SV **)slf_frame.data;
2518
2519 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2520}
2521
2522static void
2523slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2524{
2525 if (items != 2)
2526 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2527
2528 frame->prepare = slf_prepare_transfer;
2529 frame->check = slf_check_nop;
2530 frame->data = (void *)arg; /* let's hope it will stay valid */
2531}
2532
2533static void
2534slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2535{
2536 frame->prepare = prepare_schedule;
2537 frame->check = slf_check_nop;
2538}
2539
2540static void
2541slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2542{
2543 struct coro *next = (struct coro *)slf_frame.data;
2544
2545 SvREFCNT_inc_NN (next->hv);
2546 prepare_schedule_to (aTHX_ ta, next);
2547}
2548
2549static void
2550slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2551{
2552 if (!items)
2553 croak ("Coro::schedule_to expects a coroutine argument, caught");
2554
2555 frame->data = (void *)SvSTATE (arg [0]);
2556 frame->prepare = slf_prepare_schedule_to;
2557 frame->check = slf_check_nop;
2558}
2559
2560static void
2561slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2562{
2563 api_ready (aTHX_ SvRV (coro_current));
2564
2565 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2566}
2567
2568static void
2569slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2570{
2571 frame->prepare = prepare_cede;
2572 frame->check = slf_check_nop;
2573}
2574
2575static void
2576slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2577{
2578 frame->prepare = prepare_cede_notself;
2579 frame->check = slf_check_nop;
2580}
2581
2582/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
2583static void
2584slf_destroy (pTHX_ struct coro *coro)
2585{
2586 /* this callback is reserved for slf functions needing to do cleanup */
2587 if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
2588 coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
2589
2590 /*
2591 * The on_destroy above most likely is from an SLF call.
2592 * Since by definition the SLF call will not finish when we destroy
2593 * the coro, we will have to force-finish it here, otherwise
2594 * cleanup functions cannot call SLF functions.
2595 */
2596 coro->slf_frame.prepare = 0;
2597}
2598
2599/*
2600 * these not obviously related functions are all rolled into one
2601 * function to increase chances that they all will call transfer with the same
2602 * stack offset
2603 * SLF stands for "schedule-like-function".
2604 */
2605static OP *
2606pp_slf (pTHX)
2607{
2608 I32 checkmark; /* mark SP to see how many elements check has pushed */
2609
2610 /* set up the slf frame, unless it has already been set-up */
2611 /* the latter happens when a new coro has been started */
2612 /* or when a new cctx was attached to an existing coroutine */
2613 if (ecb_expect_true (!slf_frame.prepare))
2614 {
2615 /* first iteration */
2616 dSP;
2617 SV **arg = PL_stack_base + TOPMARK + 1;
2618 int items = SP - arg; /* args without function object */
2619 SV *gv = *sp;
2620
2621 /* do a quick consistency check on the "function" object, and if it isn't */
2622 /* for us, divert to the real entersub */
2623 if (SvTYPE (gv) != SVt_PVGV
2624 || !GvCV (gv)
2625 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2626 return PL_ppaddr[OP_ENTERSUB](aTHX);
2627
2628 if (!(PL_op->op_flags & OPf_STACKED))
2629 {
2630 /* ampersand-form of call, use @_ instead of stack */
2631 AV *av = GvAV (PL_defgv);
2632 arg = AvARRAY (av);
2633 items = AvFILLp (av) + 1;
2634 }
2635
2636 /* now call the init function, which needs to set up slf_frame */
2637 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2638 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2639
2640 /* pop args */
2641 SP = PL_stack_base + POPMARK;
2642
2643 PUTBACK;
2644 }
2645
2646 /* now that we have a slf_frame, interpret it! */
2647 /* we use a callback system not to make the code needlessly */
2648 /* complicated, but so we can run multiple perl coros from one cctx */
2649
2650 do
2651 {
2652 struct coro_transfer_args ta;
2653
2654 slf_frame.prepare (aTHX_ &ta);
2655 TRANSFER (ta, 0);
2656
2657 checkmark = PL_stack_sp - PL_stack_base;
2658 }
2659 while (slf_frame.check (aTHX_ &slf_frame));
2660
2661 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2662
2663 /* exception handling */
2664 if (ecb_expect_false (CORO_THROW))
2665 {
2666 SV *exception = sv_2mortal (CORO_THROW);
2667
2668 CORO_THROW = 0;
2669 sv_setsv (ERRSV, exception);
2670 croak (0);
2671 }
2672
2673 /* return value handling - mostly like entersub */
2674 /* make sure we put something on the stack in scalar context */
2675 if (GIMME_V == G_SCALAR
2676 && ecb_expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2677 {
2678 dSP;
2679 SV **bot = PL_stack_base + checkmark;
2680
2681 if (sp == bot) /* too few, push undef */
2682 bot [1] = &PL_sv_undef;
2683 else /* too many, take last one */
2684 bot [1] = *sp;
2685
2686 SP = bot + 1;
2687
2688 PUTBACK;
2689 }
2690
2691 return NORMAL;
2692}
2693
2694static void
2695api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2696{
2697 int i;
2698 SV **arg = PL_stack_base + ax;
2699 int items = PL_stack_sp - arg + 1;
2700
2701 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2702
2703 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2704 && PL_op->op_ppaddr != pp_slf)
2705 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2706
2707 CvFLAGS (cv) |= CVf_SLF;
2708 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2709 slf_cv = cv;
2710
2711 /* we patch the op, and then re-run the whole call */
2712 /* we have to put the same argument on the stack for this to work */
2713 /* and this will be done by pp_restore */
2714 slf_restore.op_next = (OP *)&slf_restore;
2715 slf_restore.op_type = OP_CUSTOM;
2716 slf_restore.op_ppaddr = pp_restore;
2717 slf_restore.op_first = PL_op;
2718
2719 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2720
2721 if (PL_op->op_flags & OPf_STACKED)
2722 {
2723 if (items > slf_arga)
2724 {
2725 slf_arga = items;
2726 Safefree (slf_argv);
2727 New (0, slf_argv, slf_arga, SV *);
2728 }
2729
2730 slf_argc = items;
2731
2732 for (i = 0; i < items; ++i)
2733 slf_argv [i] = SvREFCNT_inc (arg [i]);
2734 }
2735 else
2736 slf_argc = 0;
2737
2738 PL_op->op_ppaddr = pp_slf;
2739 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2740
2741 PL_op = (OP *)&slf_restore;
2742}
2743
2744/*****************************************************************************/
2745/* dynamic wind */
2746
2747static void
2748on_enterleave_call (pTHX_ SV *cb)
2749{
2750 dSP;
2751
2752 PUSHSTACK;
2753
2754 PUSHMARK (SP);
2755 PUTBACK;
2756 call_sv (cb, G_VOID | G_DISCARD);
2757 SPAGAIN;
2758
2759 POPSTACK;
2760}
2761
2762static SV *
2763coro_avp_pop_and_free (pTHX_ AV **avp)
2764{
2765 AV *av = *avp;
2766 SV *res = av_pop (av);
2767
2768 if (AvFILLp (av) < 0)
2769 {
2770 *avp = 0;
2771 SvREFCNT_dec (av);
2772 }
2773
2774 return res;
2775}
2776
2777static void
2778coro_pop_on_enter (pTHX_ void *coro)
2779{
2780 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
2781 SvREFCNT_dec (cb);
2782}
2783
2784static void
2785coro_pop_on_leave (pTHX_ void *coro)
2786{
2787 SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
2788 on_enterleave_call (aTHX_ sv_2mortal (cb));
2789}
1751 2790
1752/*****************************************************************************/ 2791/*****************************************************************************/
1753/* PerlIO::cede */ 2792/* PerlIO::cede */
1754 2793
1755typedef struct 2794typedef struct
1756{ 2795{
1757 PerlIOBuf base; 2796 PerlIOBuf base;
1758 NV next, every; 2797 NV next, every;
1759} PerlIOCede; 2798} PerlIOCede;
1760 2799
1761static IV 2800static IV ecb_cold
1762PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) 2801PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
1763{ 2802{
1764 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2803 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1765 2804
1766 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2805 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1767 self->next = nvtime () + self->every; 2806 self->next = nvtime () + self->every;
1768 2807
1769 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2808 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1770} 2809}
1771 2810
1772static SV * 2811static SV * ecb_cold
1773PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2812PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1774{ 2813{
1775 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2814 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1776 2815
1777 return newSVnv (self->every); 2816 return newSVnv (self->every);
… …
1783 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2822 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1784 double now = nvtime (); 2823 double now = nvtime ();
1785 2824
1786 if (now >= self->next) 2825 if (now >= self->next)
1787 { 2826 {
1788 api_cede (); 2827 api_cede (aTHX);
1789 self->next = now + self->every; 2828 self->next = now + self->every;
1790 } 2829 }
1791 2830
1792 return PerlIOBuf_flush (aTHX_ f); 2831 return PerlIOBuf_flush (aTHX_ f);
1793} 2832}
… …
1823 PerlIOBuf_get_cnt, 2862 PerlIOBuf_get_cnt,
1824 PerlIOBuf_set_ptrcnt, 2863 PerlIOBuf_set_ptrcnt,
1825}; 2864};
1826 2865
1827/*****************************************************************************/ 2866/*****************************************************************************/
2867/* Coro::Semaphore & Coro::Signal */
1828 2868
1829static const CV *ssl_cv; /* for quick consistency check */
1830
1831static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
1832static SV *ssl_arg0;
1833static SV *ssl_arg1;
1834
1835/* this restores the stack in the case we patched the entersub, to */
1836/* recreate the stack frame as perl will on following calls */
1837/* since entersub cleared the stack */
1838static OP * 2869static SV *
1839pp_restore (pTHX) 2870coro_waitarray_new (pTHX_ int count)
2871{
2872 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2873 AV *av = newAV ();
2874 SV **ary;
2875
2876 /* unfortunately, building manually saves memory */
2877 Newx (ary, 2, SV *);
2878 AvALLOC (av) = ary;
2879#if PERL_VERSION_ATLEAST (5,10,0)
2880 AvARRAY (av) = ary;
2881#else
2882 /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
2883 /* -DDEBUGGING flags this as a bug, despite it perfectly working */
2884 SvPVX ((SV *)av) = (char *)ary;
2885#endif
2886 AvMAX (av) = 1;
2887 AvFILLp (av) = 0;
2888 ary [0] = newSViv (count);
2889
2890 return newRV_noinc ((SV *)av);
2891}
2892
2893/* semaphore */
2894
2895static void
2896coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2897{
2898 SV *count_sv = AvARRAY (av)[0];
2899 IV count = SvIVX (count_sv);
2900
2901 count += adjust;
2902 SvIVX (count_sv) = count;
2903
2904 /* now wake up as many waiters as are expected to lock */
2905 while (count > 0 && AvFILLp (av) > 0)
2906 {
2907 SV *cb;
2908
2909 /* swap first two elements so we can shift a waiter */
2910 AvARRAY (av)[0] = AvARRAY (av)[1];
2911 AvARRAY (av)[1] = count_sv;
2912 cb = av_shift (av);
2913
2914 if (SvOBJECT (cb))
2915 {
2916 api_ready (aTHX_ cb);
2917 --count;
2918 }
2919 else if (SvTYPE (cb) == SVt_PVCV)
2920 {
2921 dSP;
2922 PUSHMARK (SP);
2923 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2924 PUTBACK;
2925 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2926 }
2927
2928 SvREFCNT_dec (cb);
2929 }
2930}
2931
2932static void
2933coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2934{
2935 /* call $sem->adjust (0) to possibly wake up some other waiters */
2936 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2937}
2938
2939static int
2940slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2941{
2942 AV *av = (AV *)frame->data;
2943 SV *count_sv = AvARRAY (av)[0];
2944 SV *coro_hv = SvRV (coro_current);
2945
2946 /* if we are about to throw, don't actually acquire the lock, just throw */
2947 if (CORO_THROW)
2948 return 0;
2949 else if (SvIVX (count_sv) > 0)
2950 {
2951 frame->destroy = 0;
2952
2953 if (acquire)
2954 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2955 else
2956 coro_semaphore_adjust (aTHX_ av, 0);
2957
2958 return 0;
2959 }
2960 else
2961 {
2962 int i;
2963 /* if we were woken up but can't down, we look through the whole */
2964 /* waiters list and only add us if we aren't in there already */
2965 /* this avoids some degenerate memory usage cases */
2966 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2967 if (AvARRAY (av)[i] == coro_hv)
2968 return 1;
2969
2970 av_push (av, SvREFCNT_inc (coro_hv));
2971 return 1;
2972 }
2973}
2974
2975static int
2976slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2977{
2978 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2979}
2980
2981static int
2982slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2983{
2984 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2985}
2986
2987static void
2988slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2989{
2990 AV *av = (AV *)SvRV (arg [0]);
2991
2992 if (SvIVX (AvARRAY (av)[0]) > 0)
2993 {
2994 frame->data = (void *)av;
2995 frame->prepare = prepare_nop;
2996 }
2997 else
2998 {
2999 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
3000
3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
3002 frame->prepare = prepare_schedule;
3003 /* to avoid race conditions when a woken-up coro gets terminated */
3004 /* we arrange for a temporary on_destroy that calls adjust (0) */
3005 frame->destroy = coro_semaphore_destroy;
3006 }
3007}
3008
3009static void
3010slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3011{
3012 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3013 frame->check = slf_check_semaphore_down;
3014}
3015
3016static void
3017slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3018{
3019 if (items >= 2)
3020 {
3021 /* callback form */
3022 AV *av = (AV *)SvRV (arg [0]);
3023 SV *cb_cv = s_get_cv_croak (arg [1]);
3024
3025 av_push (av, SvREFCNT_inc_NN (cb_cv));
3026
3027 if (SvIVX (AvARRAY (av)[0]) > 0)
3028 coro_semaphore_adjust (aTHX_ av, 0);
3029
3030 frame->prepare = prepare_nop;
3031 frame->check = slf_check_nop;
3032 }
3033 else
3034 {
3035 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
3036 frame->check = slf_check_semaphore_wait;
3037 }
3038}
3039
3040/* signal */
3041
3042static void
3043coro_signal_wake (pTHX_ AV *av, int count)
3044{
3045 SvIVX (AvARRAY (av)[0]) = 0;
3046
3047 /* now signal count waiters */
3048 while (count > 0 && AvFILLp (av) > 0)
3049 {
3050 SV *cb;
3051
3052 /* swap first two elements so we can shift a waiter */
3053 cb = AvARRAY (av)[0];
3054 AvARRAY (av)[0] = AvARRAY (av)[1];
3055 AvARRAY (av)[1] = cb;
3056
3057 cb = av_shift (av);
3058
3059 if (SvTYPE (cb) == SVt_PVCV)
3060 {
3061 dSP;
3062 PUSHMARK (SP);
3063 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
3064 PUTBACK;
3065 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
3066 }
3067 else
3068 {
3069 api_ready (aTHX_ cb);
3070 sv_setiv (cb, 0); /* signal waiter */
3071 }
3072
3073 SvREFCNT_dec (cb);
3074
3075 --count;
3076 }
3077}
3078
3079static int
3080slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
3081{
3082 /* if we are about to throw, also stop waiting */
3083 return SvROK ((SV *)frame->data) && !CORO_THROW;
3084}
3085
3086static void
3087slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3088{
3089 AV *av = (AV *)SvRV (arg [0]);
3090
3091 if (items >= 2)
3092 {
3093 SV *cb_cv = s_get_cv_croak (arg [1]);
3094 av_push (av, SvREFCNT_inc_NN (cb_cv));
3095
3096 if (SvIVX (AvARRAY (av)[0]))
3097 coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
3098
3099 frame->prepare = prepare_nop;
3100 frame->check = slf_check_nop;
3101 }
3102 else if (SvIVX (AvARRAY (av)[0]))
3103 {
3104 SvIVX (AvARRAY (av)[0]) = 0;
3105 frame->prepare = prepare_nop;
3106 frame->check = slf_check_nop;
3107 }
3108 else
3109 {
3110 SV *waiter = newSVsv (coro_current); /* owned by signal av */
3111
3112 av_push (av, waiter);
3113
3114 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
3115 frame->prepare = prepare_schedule;
3116 frame->check = slf_check_signal_wait;
3117 }
3118}
3119
3120/*****************************************************************************/
3121/* Coro::AIO */
3122
3123#define CORO_MAGIC_type_aio PERL_MAGIC_ext
3124
3125/* helper storage struct */
3126struct io_state
3127{
3128 int errorno;
3129 I32 laststype; /* U16 in 5.10.0 */
3130 int laststatval;
3131 Stat_t statcache;
3132};
3133
3134static void
3135coro_aio_callback (pTHX_ CV *cv)
3136{
3137 dXSARGS;
3138 AV *state = (AV *)S_GENSUB_ARG;
3139 SV *coro = av_pop (state);
3140 SV *data_sv = newSV (sizeof (struct io_state));
3141
3142 av_extend (state, items - 1);
3143
3144 sv_upgrade (data_sv, SVt_PV);
3145 SvCUR_set (data_sv, sizeof (struct io_state));
3146 SvPOK_only (data_sv);
3147
3148 {
3149 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3150
3151 data->errorno = errno;
3152 data->laststype = PL_laststype;
3153 data->laststatval = PL_laststatval;
3154 data->statcache = PL_statcache;
3155 }
3156
3157 /* now build the result vector out of all the parameters and the data_sv */
3158 {
3159 int i;
3160
3161 for (i = 0; i < items; ++i)
3162 av_push (state, SvREFCNT_inc_NN (ST (i)));
3163 }
3164
3165 av_push (state, data_sv);
3166
3167 api_ready (aTHX_ coro);
3168 SvREFCNT_dec (coro);
3169 SvREFCNT_dec ((AV *)state);
3170}
3171
3172static int
3173slf_check_aio_req (pTHX_ struct CoroSLF *frame)
3174{
3175 AV *state = (AV *)frame->data;
3176
3177 /* if we are about to throw, return early */
3178 /* this does not cancel the aio request, but at least */
3179 /* it quickly returns */
3180 if (CORO_THROW)
3181 return 0;
3182
3183 /* one element that is an RV? repeat! */
3184 if (AvFILLp (state) == 0 && SvTYPE (AvARRAY (state)[0]) != SVt_PV)
3185 return 1;
3186
3187 /* restore status */
3188 {
3189 SV *data_sv = av_pop (state);
3190 struct io_state *data = (struct io_state *)SvPVX (data_sv);
3191
3192 errno = data->errorno;
3193 PL_laststype = data->laststype;
3194 PL_laststatval = data->laststatval;
3195 PL_statcache = data->statcache;
3196
3197 SvREFCNT_dec (data_sv);
3198 }
3199
3200 /* push result values */
3201 {
3202 dSP;
3203 int i;
3204
3205 EXTEND (SP, AvFILLp (state) + 1);
3206 for (i = 0; i <= AvFILLp (state); ++i)
3207 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
3208
3209 PUTBACK;
3210 }
3211
3212 return 0;
3213}
3214
3215static void
3216slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
3217{
3218 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
3219 SV *coro_hv = SvRV (coro_current);
3220 struct coro *coro = SvSTATE_hv (coro_hv);
3221
3222 /* put our coroutine id on the state arg */
3223 av_push (state, SvREFCNT_inc_NN (coro_hv));
3224
3225 /* first see whether we have a non-zero priority and set it as AIO prio */
3226 if (coro->prio)
3227 {
3228 dSP;
3229
3230 static SV *prio_cv;
3231 static SV *prio_sv;
3232
3233 if (ecb_expect_false (!prio_cv))
3234 {
3235 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
3236 prio_sv = newSViv (0);
3237 }
3238
3239 PUSHMARK (SP);
3240 sv_setiv (prio_sv, coro->prio);
3241 XPUSHs (prio_sv);
3242
3243 PUTBACK;
3244 call_sv (prio_cv, G_VOID | G_DISCARD);
3245 }
3246
3247 /* now call the original request */
3248 {
3249 dSP;
3250 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
3251 int i;
3252
3253 PUSHMARK (SP);
3254
3255 /* first push all args to the stack */
3256 EXTEND (SP, items + 1);
3257
3258 for (i = 0; i < items; ++i)
3259 PUSHs (arg [i]);
3260
3261 /* now push the callback closure */
3262 PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
3263
3264 /* now call the AIO function - we assume our request is uncancelable */
3265 PUTBACK;
3266 call_sv ((SV *)req, G_VOID | G_DISCARD);
3267 }
3268
3269 /* now that the request is going, we loop till we have a result */
3270 frame->data = (void *)state;
3271 frame->prepare = prepare_schedule;
3272 frame->check = slf_check_aio_req;
3273}
3274
3275static void
3276coro_aio_req_xs (pTHX_ CV *cv)
3277{
3278 dXSARGS;
3279
3280 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
3281
3282 XSRETURN_EMPTY;
3283}
3284
3285/*****************************************************************************/
3286
3287#if CORO_CLONE
3288# include "clone.c"
3289#endif
3290
3291/*****************************************************************************/
3292
3293static SV *
3294coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
3295{
3296 SV *coro_sv;
3297 struct coro *coro;
3298 MAGIC *mg;
3299 HV *hv;
3300 SV *cb;
3301 int i;
3302
3303 if (argc > 0)
3304 {
3305 cb = s_get_cv_croak (argv [0]);
3306
3307 if (!is_coro)
3308 {
3309 if (CvISXSUB (cb))
3310 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3311
3312 if (!CvROOT (cb))
3313 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3314 }
3315 }
3316
3317 Newz (0, coro, 1, struct coro);
3318 coro->args = newAV ();
3319 coro->flags = CF_NEW;
3320
3321 if (coro_first) coro_first->prev = coro;
3322 coro->next = coro_first;
3323 coro_first = coro;
3324
3325 coro->hv = hv = newHV ();
3326 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3327 mg->mg_flags |= MGf_DUP;
3328 coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
3329
3330 if (argc > 0)
3331 {
3332 av_extend (coro->args, argc + is_coro - 1);
3333
3334 if (is_coro)
3335 {
3336 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3337 cb = (SV *)cv_coro_run;
3338 }
3339
3340 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3341
3342 for (i = 1; i < argc; i++)
3343 av_push (coro->args, newSVsv (argv [i]));
3344 }
3345
3346 return coro_sv;
3347}
3348
3349#ifndef __cplusplus
3350ecb_cold XS(boot_Coro__State);
3351#endif
3352
3353#if CORO_JIT
3354
3355static void ecb_noinline ecb_cold
3356pushav_4uv (pTHX_ UV a, UV b, UV c, UV d)
1840{ 3357{
1841 dSP; 3358 dSP;
3359 AV *av = newAV ();
3360
3361 av_store (av, 3, newSVuv (d));
3362 av_store (av, 2, newSVuv (c));
3363 av_store (av, 1, newSVuv (b));
3364 av_store (av, 0, newSVuv (a));
3365
3366 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
3367
3368 PUTBACK;
3369}
3370
3371static void ecb_noinline ecb_cold
3372jit_init (pTHX)
3373{
3374 dSP;
3375 SV *load, *save;
3376 char *map_base;
3377 char *load_ptr, *save_ptr;
3378 STRLEN load_len, save_len, map_len;
3379 int count;
3380
3381 eval_pv ("require 'Coro/jit-" CORO_JIT_TYPE ".pl'", 1);
1842 3382
1843 PUSHMARK (SP); 3383 PUSHMARK (SP);
3384 #define VARx(name,expr,type) pushav_4uv (aTHX_ (UV)&(expr), sizeof (expr), offsetof (perl_slots, name), sizeof (type));
3385 #include "state.h"
3386 count = call_pv ("Coro::State::_jit", G_ARRAY);
3387 SPAGAIN;
1844 3388
1845 EXTEND (SP, 3); 3389 save = POPs; save_ptr = SvPVbyte (save, save_len);
1846 if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0; 3390 load = POPs; load_ptr = SvPVbyte (load, load_len);
1847 if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
1848 PUSHs ((SV *)CvGV (ssl_cv));
1849 3391
1850 RETURNOP (ssl_restore.op_first); 3392 map_len = load_len + save_len + 16;
1851}
1852 3393
1853/* declare prototype */ 3394 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
1854XS(XS_Coro__State__set_stacklevel);
1855 3395
1856static OP * 3396 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
1857pp_set_stacklevel (pTHX)
1858{
1859 dSP;
1860 struct transfer_args ta;
1861 SV **arg = PL_stack_base + TOPMARK + 1;
1862 int items = SP - arg; /* args without function object */
1863 3397
1864 /* do a quick consistency check on the "function" object, and if it isn't */ 3398 load_perl_slots = (load_save_perl_slots_type)map_base;
1865 /* for us, divert to the real entersub */ 3399 memcpy (map_base, load_ptr, load_len);
1866 if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
1867 return PL_ppaddr[OP_ENTERSUB](aTHX);
1868 3400
1869 /* pop args */ 3401 map_base += (load_len + 15) & ~15;
1870 SP = PL_stack_base + POPMARK;
1871 3402
1872 if (!(PL_op->op_flags & OPf_STACKED)) 3403 save_perl_slots = (load_save_perl_slots_type)map_base;
1873 { 3404 memcpy (map_base, save_ptr, save_len);
1874 /* ampersand-form of call, use @_ instead of stack */ 3405
1875 AV *av = GvAV (PL_defgv); 3406 /* we are good citizens and try to make the page read-only, so the evil evil */
1876 arg = AvARRAY (av); 3407 /* hackers might have it a bit more difficult */
1877 items = AvFILLp (av) + 1; 3408 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
1878 }
1879 3409
1880 PUTBACK; 3410 PUTBACK;
1881 switch (PL_op->op_private & 7) 3411 eval_pv ("undef &Coro::State::_jit", 1);
1882 {
1883 case 0:
1884 prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
1885 break;
1886
1887 case 1:
1888 if (items != 2)
1889 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
1890
1891 prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
1892 break;
1893
1894 case 2:
1895 prepare_schedule (aTHX_ &ta);
1896 break;
1897
1898 case 3:
1899 prepare_cede (aTHX_ &ta);
1900 break;
1901
1902 case 4:
1903 if (!prepare_cede_notself (aTHX_ &ta))
1904 goto skip;
1905
1906 break;
1907 }
1908
1909 TRANSFER (ta, 0);
1910 SPAGAIN;
1911
1912skip:
1913 PUTBACK;
1914 SSL_TAIL;
1915 SPAGAIN;
1916 RETURN;
1917} 3412}
3413
3414#endif
1918 3415
1919MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3416MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1920 3417
1921PROTOTYPES: DISABLE 3418PROTOTYPES: DISABLE
1922 3419
1923# these not obviously related functions are all rolled into the same xs
1924# function to increase chances that they all will call transfer with the same
1925# stack offset
1926void
1927_set_stacklevel (...)
1928 ALIAS:
1929 Coro::State::transfer = 1
1930 Coro::schedule = 2
1931 Coro::cede = 3
1932 Coro::cede_notself = 4
1933 CODE:
1934{
1935 assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1936
1937 /* we patch the op, and then re-run the whole call */
1938 /* we have to put some dummy argument on the stack for this to work */
1939 /* TODO: walk back the opcode chain (but how?), nuke the pp_gv etc. */
1940 ssl_restore.op_next = (OP *)&ssl_restore;
1941 ssl_restore.op_type = OP_NULL;
1942 ssl_restore.op_ppaddr = pp_restore;
1943 ssl_restore.op_first = PL_op;
1944
1945 ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
1946 ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
1947
1948 PL_op->op_ppaddr = pp_set_stacklevel;
1949 PL_op->op_private = PL_op->op_private & ~7 | ix; /* we potentially share our private flags with entersub */
1950
1951 PL_op = (OP *)&ssl_restore;
1952}
1953
1954BOOT: 3420BOOT:
1955{ 3421{
1956#ifdef USE_ITHREADS 3422#ifdef USE_ITHREADS
1957 MUTEX_INIT (&coro_lock);
1958# if CORO_PTHREAD 3423# if CORO_PTHREAD
1959 coro_thx = PERL_GET_CONTEXT; 3424 coro_thx = PERL_GET_CONTEXT;
1960# endif 3425# endif
1961#endif 3426#endif
1962 BOOT_PAGESIZE; 3427 /* perl defines these to check for existance first, but why it doesn't */
3428 /* just create them one at init time is not clear to me, except for */
3429 /* programs trying to delete them, but... */
3430 /* anyway, we declare this as invalid and make sure they are initialised here */
3431 DEFSV;
3432 ERRSV;
1963 3433
1964 ssl_cv = get_cv ("Coro::State::_set_stacklevel", 0); 3434 cctx_current = cctx_new_empty ();
1965 3435
1966 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3436 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1967 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3437 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1968 3438
1969 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; 3439 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
… …
1985 main_top_env = PL_top_env; 3455 main_top_env = PL_top_env;
1986 3456
1987 while (main_top_env->je_prev) 3457 while (main_top_env->je_prev)
1988 main_top_env = main_top_env->je_prev; 3458 main_top_env = main_top_env->je_prev;
1989 3459
1990 coroapi.ver = CORO_API_VERSION;
1991 coroapi.rev = CORO_API_REVISION;
1992 coroapi.transfer = api_transfer;
1993
1994 { 3460 {
1995 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 3461 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
1996 3462
1997 if (!svp) croak ("Time::HiRes is required"); 3463 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
1998 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); 3464 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
1999 3465
2000 nvtime = INT2PTR (double (*)(), SvIV (*svp)); 3466 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
3467 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2001 } 3468 }
2002 3469
3470 coroapi.ver = CORO_API_VERSION;
3471 coroapi.rev = CORO_API_REVISION;
3472
3473 coroapi.transfer = api_transfer;
3474
3475 coroapi.sv_state = SvSTATE_;
3476 coroapi.execute_slf = api_execute_slf;
3477 coroapi.prepare_nop = prepare_nop;
3478 coroapi.prepare_schedule = prepare_schedule;
3479 coroapi.prepare_cede = prepare_cede;
3480 coroapi.prepare_cede_notself = prepare_cede_notself;
3481
3482 time_init (aTHX);
3483
2003 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); 3484 assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3485#if CORO_JIT
3486 PUTBACK;
3487 jit_init (aTHX);
3488 SPAGAIN;
3489#endif
2004} 3490}
2005 3491
2006SV * 3492SV *
2007new (char *klass, ...) 3493new (SV *klass, ...)
3494 ALIAS:
3495 Coro::new = 1
2008 CODE: 3496 CODE:
2009{ 3497 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2010 struct coro *coro;
2011 MAGIC *mg;
2012 HV *hv;
2013 int i;
2014
2015 Newz (0, coro, 1, struct coro);
2016 coro->args = newAV ();
2017 coro->flags = CF_NEW;
2018
2019 if (coro_first) coro_first->prev = coro;
2020 coro->next = coro_first;
2021 coro_first = coro;
2022
2023 coro->hv = hv = newHV ();
2024 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2025 mg->mg_flags |= MGf_DUP;
2026 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2027
2028 av_extend (coro->args, items - 1);
2029 for (i = 1; i < items; i++)
2030 av_push (coro->args, newSVsv (ST (i)));
2031}
2032 OUTPUT:
2033 RETVAL
2034
2035bool
2036_destroy (SV *coro_sv)
2037 CODE:
2038 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2039 OUTPUT: 3498 OUTPUT:
2040 RETVAL 3499 RETVAL
2041 3500
2042void 3501void
2043_exit (int code) 3502transfer (...)
2044 PROTOTYPE: $ 3503 PROTOTYPE: $$
2045 CODE: 3504 CODE:
2046 _exit (code); 3505 CORO_EXECUTE_SLF_XS (slf_init_transfer);
3506
3507SV *
3508clone (Coro::State coro)
3509 CODE:
3510{
3511#if CORO_CLONE
3512 struct coro *ncoro = coro_clone (aTHX_ coro);
3513 MAGIC *mg;
3514 /* TODO: too much duplication */
3515 ncoro->hv = newHV ();
3516 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
3517 mg->mg_flags |= MGf_DUP;
3518 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
3519#else
3520 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
3521#endif
3522}
3523 OUTPUT:
3524 RETVAL
2047 3525
2048int 3526int
2049cctx_stacksize (int new_stacksize = 0) 3527cctx_stacksize (int new_stacksize = 0)
3528 PROTOTYPE: ;$
2050 CODE: 3529 CODE:
2051 RETVAL = cctx_stacksize; 3530 RETVAL = cctx_stacksize;
2052 if (new_stacksize) 3531 if (new_stacksize)
2053 { 3532 {
2054 cctx_stacksize = new_stacksize; 3533 cctx_stacksize = new_stacksize;
… …
2057 OUTPUT: 3536 OUTPUT:
2058 RETVAL 3537 RETVAL
2059 3538
2060int 3539int
2061cctx_max_idle (int max_idle = 0) 3540cctx_max_idle (int max_idle = 0)
3541 PROTOTYPE: ;$
2062 CODE: 3542 CODE:
2063 RETVAL = cctx_max_idle; 3543 RETVAL = cctx_max_idle;
2064 if (max_idle > 1) 3544 if (max_idle > 1)
2065 cctx_max_idle = max_idle; 3545 cctx_max_idle = max_idle;
2066 OUTPUT: 3546 OUTPUT:
2067 RETVAL 3547 RETVAL
2068 3548
2069int 3549int
2070cctx_count () 3550cctx_count ()
3551 PROTOTYPE:
2071 CODE: 3552 CODE:
2072 RETVAL = cctx_count; 3553 RETVAL = cctx_count;
2073 OUTPUT: 3554 OUTPUT:
2074 RETVAL 3555 RETVAL
2075 3556
2076int 3557int
2077cctx_idle () 3558cctx_idle ()
3559 PROTOTYPE:
2078 CODE: 3560 CODE:
2079 RETVAL = cctx_idle; 3561 RETVAL = cctx_idle;
2080 OUTPUT: 3562 OUTPUT:
2081 RETVAL 3563 RETVAL
2082 3564
2083void 3565void
2084list () 3566list ()
3567 PROTOTYPE:
2085 PPCODE: 3568 PPCODE:
2086{ 3569{
2087 struct coro *coro; 3570 struct coro *coro;
2088 for (coro = coro_first; coro; coro = coro->next) 3571 for (coro = coro_first; coro; coro = coro->next)
2089 if (coro->hv) 3572 if (coro->hv)
2090 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3573 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2091} 3574}
2092 3575
… …
2096 eval = 1 3579 eval = 1
2097 CODE: 3580 CODE:
2098{ 3581{
2099 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3582 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2100 { 3583 {
2101 struct coro temp; 3584 struct coro *current = SvSTATE_current;
3585 struct CoroSLF slf_save;
2102 3586
2103 if (!(coro->flags & CF_RUNNING)) 3587 if (current != coro)
2104 { 3588 {
2105 PUTBACK; 3589 PUTBACK;
2106 save_perl (aTHX_ &temp); 3590 save_perl (aTHX_ current);
2107 load_perl (aTHX_ coro); 3591 load_perl (aTHX_ coro);
3592 /* the coro is most likely in an active SLF call.
3593 * while not strictly required (the code we execute is
3594 * not allowed to call any SLF functions), it's cleaner
3595 * to reinitialise the slf_frame and restore it later.
3596 * This might one day allow us to actually do SLF calls
3597 * from code executed here.
3598 */
3599 slf_save = slf_frame;
3600 slf_frame.prepare = 0;
3601 SPAGAIN;
2108 } 3602 }
2109 3603
2110 {
2111 dSP;
2112 ENTER;
2113 SAVETMPS;
2114 PUTBACK;
2115 PUSHSTACK; 3604 PUSHSTACK;
3605
2116 PUSHMARK (SP); 3606 PUSHMARK (SP);
3607 PUTBACK;
2117 3608
2118 if (ix) 3609 if (ix)
2119 eval_sv (coderef, 0); 3610 eval_sv (coderef, 0);
2120 else 3611 else
2121 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3612 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2122 3613
2123 POPSTACK; 3614 POPSTACK;
2124 SPAGAIN; 3615 SPAGAIN;
2125 FREETMPS;
2126 LEAVE;
2127 PUTBACK;
2128 }
2129 3616
2130 if (!(coro->flags & CF_RUNNING)) 3617 if (current != coro)
2131 { 3618 {
3619 PUTBACK;
3620 slf_frame = slf_save;
2132 save_perl (aTHX_ coro); 3621 save_perl (aTHX_ coro);
2133 load_perl (aTHX_ &temp); 3622 load_perl (aTHX_ current);
2134 SPAGAIN; 3623 SPAGAIN;
2135 } 3624 }
2136 } 3625 }
2137} 3626}
2138 3627
… …
2141 PROTOTYPE: $ 3630 PROTOTYPE: $
2142 ALIAS: 3631 ALIAS:
2143 is_ready = CF_READY 3632 is_ready = CF_READY
2144 is_running = CF_RUNNING 3633 is_running = CF_RUNNING
2145 is_new = CF_NEW 3634 is_new = CF_NEW
2146 is_destroyed = CF_DESTROYED 3635 is_destroyed = CF_ZOMBIE
3636 is_zombie = CF_ZOMBIE
3637 is_suspended = CF_SUSPENDED
2147 CODE: 3638 CODE:
2148 RETVAL = boolSV (coro->flags & ix); 3639 RETVAL = boolSV (coro->flags & ix);
2149 OUTPUT: 3640 OUTPUT:
2150 RETVAL 3641 RETVAL
2151 3642
2152void 3643void
2153throw (Coro::State self, SV *throw = &PL_sv_undef) 3644throw (SV *self, SV *exception = &PL_sv_undef)
2154 PROTOTYPE: $;$ 3645 PROTOTYPE: $;$
2155 CODE: 3646 CODE:
3647{
3648 struct coro *coro = SvSTATE (self);
3649 struct coro *current = SvSTATE_current;
3650 SV **exceptionp = coro == current ? &CORO_THROW : &coro->except;
2156 SvREFCNT_dec (self->throw); 3651 SvREFCNT_dec (*exceptionp);
2157 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3652 SvGETMAGIC (exception);
3653 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3654
3655 api_ready (aTHX_ self);
3656}
2158 3657
2159void 3658void
2160api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3659api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3660 PROTOTYPE: $;$
3661 C_ARGS: aTHX_ coro, flags
2161 3662
2162SV * 3663SV *
2163has_cctx (Coro::State coro) 3664has_cctx (Coro::State coro)
2164 PROTOTYPE: $ 3665 PROTOTYPE: $
2165 CODE: 3666 CODE:
2166 RETVAL = boolSV (!!coro->cctx); 3667 /* maybe manage the running flag differently */
3668 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2167 OUTPUT: 3669 OUTPUT:
2168 RETVAL 3670 RETVAL
2169 3671
2170int 3672int
2171is_traced (Coro::State coro) 3673is_traced (Coro::State coro)
… …
2189 OUTPUT: 3691 OUTPUT:
2190 RETVAL 3692 RETVAL
2191 3693
2192void 3694void
2193force_cctx () 3695force_cctx ()
3696 PROTOTYPE:
2194 CODE: 3697 CODE:
2195 struct coro *coro = SvSTATE (coro_current);
2196 coro->cctx->idle_sp = 0; 3698 cctx_current->idle_sp = 0;
2197 3699
2198void 3700void
2199swap_defsv (Coro::State self) 3701swap_defsv (Coro::State self)
2200 PROTOTYPE: $ 3702 PROTOTYPE: $
2201 ALIAS: 3703 ALIAS:
2202 swap_defav = 1 3704 swap_defav = 1
2203 CODE: 3705 CODE:
2204 if (!self->slot) 3706 if (!self->slot)
2205 croak ("cannot swap state with coroutine that has no saved state"); 3707 croak ("cannot swap state with coroutine that has no saved state,");
2206 else 3708 else
2207 { 3709 {
2208 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 3710 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2209 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3711 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2210 3712
2211 SV *tmp = *src; *src = *dst; *dst = tmp; 3713 SV *tmp = *src; *src = *dst; *dst = tmp;
2212 } 3714 }
2213 3715
3716void
3717cancel (Coro::State self)
3718 CODE:
3719 coro_state_destroy (aTHX_ self);
3720
3721SV *
3722enable_times (int enabled = enable_times)
3723 CODE:
3724{
3725 RETVAL = boolSV (enable_times);
3726
3727 if (enabled != enable_times)
3728 {
3729 enable_times = enabled;
3730
3731 coro_times_update ();
3732 (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
3733 }
3734}
3735 OUTPUT:
3736 RETVAL
3737
3738void
3739times (Coro::State self)
3740 PPCODE:
3741{
3742 struct coro *current = SvSTATE (coro_current);
3743
3744 if (ecb_expect_false (current == self))
3745 {
3746 coro_times_update ();
3747 coro_times_add (SvSTATE (coro_current));
3748 }
3749
3750 EXTEND (SP, 2);
3751 PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
3752 PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
3753
3754 if (ecb_expect_false (current == self))
3755 coro_times_sub (SvSTATE (coro_current));
3756}
3757
3758void
3759swap_sv (Coro::State coro, SV *sv, SV *swapsv)
3760 CODE:
3761{
3762 struct coro *current = SvSTATE_current;
3763
3764 if (current == coro)
3765 SWAP_SVS (current);
3766
3767 if (!coro->swap_sv)
3768 coro->swap_sv = newAV ();
3769
3770 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
3771 av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
3772
3773 if (current == coro)
3774 SWAP_SVS (current);
3775}
3776
3777
2214MODULE = Coro::State PACKAGE = Coro 3778MODULE = Coro::State PACKAGE = Coro
2215 3779
2216BOOT: 3780BOOT:
2217{ 3781{
2218 int i;
2219
2220 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2221 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3782 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2222 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3783 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2223 3784 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2224 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3785 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2225 SvREADONLY_on (coro_current); 3786 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3787 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3788 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3789 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3790
3791 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3792 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3793 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3794 CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
2226 3795
2227 coro_stash = gv_stashpv ("Coro", TRUE); 3796 coro_stash = gv_stashpv ("Coro", TRUE);
2228 3797
2229 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3798 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2230 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3799 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2231 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3800 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2232 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3801 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2233 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3802 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2234 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3803 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2235
2236 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2237 coro_ready[i] = newAV ();
2238 3804
2239 { 3805 {
2240 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3806 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2241 3807
2242 coroapi.schedule = api_schedule; 3808 coroapi.schedule = api_schedule;
3809 coroapi.schedule_to = api_schedule_to;
2243 coroapi.cede = api_cede; 3810 coroapi.cede = api_cede;
2244 coroapi.cede_notself = api_cede_notself; 3811 coroapi.cede_notself = api_cede_notself;
2245 coroapi.ready = api_ready; 3812 coroapi.ready = api_ready;
2246 coroapi.is_ready = api_is_ready; 3813 coroapi.is_ready = api_is_ready;
2247 coroapi.nready = &coro_nready; 3814 coroapi.nready = coro_nready;
2248 coroapi.current = coro_current; 3815 coroapi.current = coro_current;
2249 3816
2250 GCoroAPI = &coroapi; 3817 /*GCoroAPI = &coroapi;*/
2251 sv_setiv (sv, (IV)&coroapi); 3818 sv_setiv (sv, (IV)&coroapi);
2252 SvREADONLY_on (sv); 3819 SvREADONLY_on (sv);
2253 } 3820 }
2254} 3821}
3822
3823SV *
3824async (...)
3825 PROTOTYPE: &@
3826 CODE:
3827 RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
3828 api_ready (aTHX_ RETVAL);
3829 OUTPUT:
3830 RETVAL
3831
3832void
3833_destroy (Coro::State coro)
3834 CODE:
3835 /* used by the manager thread */
3836 coro_state_destroy (aTHX_ coro);
3837
3838void
3839on_destroy (Coro::State coro, SV *cb)
3840 CODE:
3841 coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
3842
3843void
3844join (...)
3845 CODE:
3846 CORO_EXECUTE_SLF_XS (slf_init_join);
3847
3848void
3849terminate (...)
3850 CODE:
3851 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3852
3853void
3854cancel (...)
3855 CODE:
3856 CORO_EXECUTE_SLF_XS (slf_init_cancel);
3857
3858int
3859safe_cancel (Coro::State self, ...)
3860 C_ARGS: aTHX_ self, &ST (1), items - 1
3861
3862void
3863schedule (...)
3864 CODE:
3865 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3866
3867void
3868schedule_to (...)
3869 CODE:
3870 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3871
3872void
3873cede_to (...)
3874 CODE:
3875 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3876
3877void
3878cede (...)
3879 CODE:
3880 CORO_EXECUTE_SLF_XS (slf_init_cede);
3881
3882void
3883cede_notself (...)
3884 CODE:
3885 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2255 3886
2256void 3887void
2257_set_current (SV *current) 3888_set_current (SV *current)
2258 PROTOTYPE: $ 3889 PROTOTYPE: $
2259 CODE: 3890 CODE:
… …
2262 3893
2263void 3894void
2264_set_readyhook (SV *hook) 3895_set_readyhook (SV *hook)
2265 PROTOTYPE: $ 3896 PROTOTYPE: $
2266 CODE: 3897 CODE:
2267 LOCK;
2268 SvREFCNT_dec (coro_readyhook); 3898 SvREFCNT_dec (coro_readyhook);
3899 SvGETMAGIC (hook);
3900 if (SvOK (hook))
3901 {
2269 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3902 coro_readyhook = newSVsv (hook);
2270 UNLOCK; 3903 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3904 }
3905 else
3906 {
3907 coro_readyhook = 0;
3908 CORO_READYHOOK = 0;
3909 }
2271 3910
2272int 3911int
2273prio (Coro::State coro, int newprio = 0) 3912prio (Coro::State coro, int newprio = 0)
3913 PROTOTYPE: $;$
2274 ALIAS: 3914 ALIAS:
2275 nice = 1 3915 nice = 1
2276 CODE: 3916 CODE:
2277{ 3917{
2278 RETVAL = coro->prio; 3918 RETVAL = coro->prio;
… …
2280 if (items > 1) 3920 if (items > 1)
2281 { 3921 {
2282 if (ix) 3922 if (ix)
2283 newprio = coro->prio - newprio; 3923 newprio = coro->prio - newprio;
2284 3924
2285 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3925 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2286 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3926 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2287 3927
2288 coro->prio = newprio; 3928 coro->prio = newprio;
2289 } 3929 }
2290} 3930}
2291 OUTPUT: 3931 OUTPUT:
… …
2293 3933
2294SV * 3934SV *
2295ready (SV *self) 3935ready (SV *self)
2296 PROTOTYPE: $ 3936 PROTOTYPE: $
2297 CODE: 3937 CODE:
2298 RETVAL = boolSV (api_ready (self)); 3938 RETVAL = boolSV (api_ready (aTHX_ self));
2299 OUTPUT: 3939 OUTPUT:
2300 RETVAL 3940 RETVAL
2301 3941
2302int 3942int
2303nready (...) 3943nready (...)
… …
2305 CODE: 3945 CODE:
2306 RETVAL = coro_nready; 3946 RETVAL = coro_nready;
2307 OUTPUT: 3947 OUTPUT:
2308 RETVAL 3948 RETVAL
2309 3949
2310# for async_pool speedup
2311void 3950void
2312_pool_1 (SV *cb) 3951suspend (Coro::State self)
3952 PROTOTYPE: $
2313 CODE: 3953 CODE:
2314{ 3954 self->flags |= CF_SUSPENDED;
2315 struct coro *coro = SvSTATE (coro_current);
2316 HV *hv = (HV *)SvRV (coro_current);
2317 AV *defav = GvAV (PL_defgv);
2318 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2319 AV *invoke_av;
2320 int i, len;
2321 3955
2322 if (!invoke) 3956void
3957resume (Coro::State self)
3958 PROTOTYPE: $
3959 CODE:
3960 self->flags &= ~CF_SUSPENDED;
3961
3962void
3963_pool_handler (...)
3964 CODE:
3965 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3966
3967void
3968async_pool (SV *cv, ...)
3969 PROTOTYPE: &@
3970 PPCODE:
3971{
3972 HV *hv = (HV *)av_pop (av_async_pool);
3973 AV *av = newAV ();
3974 SV *cb = ST (0);
3975 int i;
3976
3977 av_extend (av, items - 2);
3978 for (i = 1; i < items; ++i)
3979 av_push (av, SvREFCNT_inc_NN (ST (i)));
3980
3981 if ((SV *)hv == &PL_sv_undef)
2323 { 3982 {
2324 SV *old = PL_diehook; 3983 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2325 PL_diehook = 0; 3984 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2326 SvREFCNT_dec (old); 3985 SvREFCNT_dec (sv);
2327 croak ("\3async_pool terminate\2\n");
2328 } 3986 }
2329 3987
2330 SvREFCNT_dec (coro->saved_deffh);
2331 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2332
2333 hv_store (hv, "desc", sizeof ("desc") - 1,
2334 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2335
2336 invoke_av = (AV *)SvRV (invoke);
2337 len = av_len (invoke_av);
2338
2339 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2340
2341 if (len > 0)
2342 { 3988 {
2343 av_fill (defav, len - 1); 3989 struct coro *coro = SvSTATE_hv (hv);
2344 for (i = 0; i < len; ++i) 3990
2345 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 3991 assert (!coro->invoke_cb);
3992 assert (!coro->invoke_av);
3993 coro->invoke_cb = SvREFCNT_inc (cb);
3994 coro->invoke_av = av;
2346 } 3995 }
2347 3996
3997 api_ready (aTHX_ (SV *)hv);
3998
3999 if (GIMME_V != G_VOID)
4000 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4001 else
2348 SvREFCNT_dec (invoke); 4002 SvREFCNT_dec (hv);
2349} 4003}
2350 4004
2351void 4005SV *
2352_pool_2 (SV *cb) 4006rouse_cb ()
4007 PROTOTYPE:
2353 CODE: 4008 CODE:
2354{ 4009 RETVAL = coro_new_rouse_cb (aTHX);
2355 struct coro *coro = SvSTATE (coro_current);
2356
2357 sv_setsv (cb, &PL_sv_undef);
2358
2359 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2360 coro->saved_deffh = 0;
2361
2362 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2363 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2364 {
2365 SV *old = PL_diehook;
2366 PL_diehook = 0;
2367 SvREFCNT_dec (old);
2368 croak ("\3async_pool terminate\2\n");
2369 }
2370
2371 av_clear (GvAV (PL_defgv));
2372 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2373 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2374
2375 coro->prio = 0;
2376
2377 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2378 api_trace (coro_current, 0);
2379
2380 av_push (av_async_pool, newSVsv (coro_current));
2381}
2382
2383#if 0
2384
2385void
2386_generator_call (...)
2387 PROTOTYPE: @
2388 PPCODE:
2389 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2390 xxxx
2391 abort ();
2392
2393SV *
2394gensub (SV *sub, ...)
2395 PROTOTYPE: &;@
2396 CODE:
2397{
2398 struct coro *coro;
2399 MAGIC *mg;
2400 CV *xcv;
2401 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2402 int i;
2403
2404 CvGV (ncv) = CvGV (cv);
2405 CvFILE (ncv) = CvFILE (cv);
2406
2407 Newz (0, coro, 1, struct coro);
2408 coro->args = newAV ();
2409 coro->flags = CF_NEW;
2410
2411 av_extend (coro->args, items - 1);
2412 for (i = 1; i < items; i++)
2413 av_push (coro->args, newSVsv (ST (i)));
2414
2415 CvISXSUB_on (ncv);
2416 CvXSUBANY (ncv).any_ptr = (void *)coro;
2417
2418 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2419
2420 CvXSUB (ncv) = CvXSUB (xcv);
2421 CvANON_on (ncv);
2422
2423 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2424 RETVAL = newRV_noinc ((SV *)ncv);
2425}
2426 OUTPUT: 4010 OUTPUT:
2427 RETVAL 4011 RETVAL
2428 4012
2429#endif
2430
2431
2432MODULE = Coro::State PACKAGE = Coro::AIO
2433
2434void 4013void
2435_get_state (SV *self) 4014rouse_wait (...)
4015 PROTOTYPE: ;$
2436 PPCODE: 4016 PPCODE:
2437{ 4017 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2438 AV *defav = GvAV (PL_defgv);
2439 AV *av = newAV ();
2440 int i;
2441 SV *data_sv = newSV (sizeof (struct io_state));
2442 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2443 SvCUR_set (data_sv, sizeof (struct io_state));
2444 SvPOK_only (data_sv);
2445
2446 data->errorno = errno;
2447 data->laststype = PL_laststype;
2448 data->laststatval = PL_laststatval;
2449 data->statcache = PL_statcache;
2450
2451 av_extend (av, AvFILLp (defav) + 1 + 1);
2452
2453 for (i = 0; i <= AvFILLp (defav); ++i)
2454 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2455
2456 av_push (av, data_sv);
2457
2458 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2459
2460 api_ready (self);
2461}
2462 4018
2463void 4019void
2464_set_state (SV *state) 4020on_enter (SV *block)
4021 ALIAS:
4022 on_leave = 1
2465 PROTOTYPE: $ 4023 PROTOTYPE: &
4024 CODE:
4025{
4026 struct coro *coro = SvSTATE_current;
4027 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
4028
4029 block = s_get_cv_croak (block);
4030
4031 if (!*avp)
4032 *avp = newAV ();
4033
4034 av_push (*avp, SvREFCNT_inc (block));
4035
4036 if (!ix)
4037 on_enterleave_call (aTHX_ block);
4038
4039 LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4040 SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
4041 ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
4042}
4043
4044
4045MODULE = Coro::State PACKAGE = PerlIO::cede
4046
4047BOOT:
4048 PerlIO_define_layer (aTHX_ &PerlIO_cede);
4049
4050
4051MODULE = Coro::State PACKAGE = Coro::Semaphore
4052
4053SV *
4054new (SV *klass, SV *count = 0)
4055 CODE:
4056{
4057 int semcnt = 1;
4058
4059 if (count)
4060 {
4061 SvGETMAGIC (count);
4062
4063 if (SvOK (count))
4064 semcnt = SvIV (count);
4065 }
4066
4067 RETVAL = sv_bless (
4068 coro_waitarray_new (aTHX_ semcnt),
4069 GvSTASH (CvGV (cv))
4070 );
4071}
4072 OUTPUT:
4073 RETVAL
4074
4075# helper for Coro::Channel and others
4076SV *
4077_alloc (int count)
4078 CODE:
4079 RETVAL = coro_waitarray_new (aTHX_ count);
4080 OUTPUT:
4081 RETVAL
4082
4083SV *
4084count (SV *self)
4085 CODE:
4086 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
4087 OUTPUT:
4088 RETVAL
4089
4090void
4091up (SV *self, int adjust = 1)
4092 ALIAS:
4093 adjust = 1
4094 CODE:
4095 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
4096
4097void
4098down (...)
4099 CODE:
4100 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4101
4102void
4103wait (...)
4104 CODE:
4105 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
4106
4107void
4108try (SV *self)
4109 PPCODE:
4110{
4111 AV *av = (AV *)SvRV (self);
4112 SV *count_sv = AvARRAY (av)[0];
4113 IV count = SvIVX (count_sv);
4114
4115 if (count > 0)
4116 {
4117 --count;
4118 SvIVX (count_sv) = count;
4119 XSRETURN_YES;
4120 }
4121 else
4122 XSRETURN_NO;
4123}
4124
4125void
4126waiters (SV *self)
2466 PPCODE: 4127 PPCODE:
2467{ 4128{
4129 AV *av = (AV *)SvRV (self);
4130 int wcount = AvFILLp (av) + 1 - 1;
4131
4132 if (GIMME_V == G_SCALAR)
4133 XPUSHs (sv_2mortal (newSViv (wcount)));
4134 else
4135 {
4136 int i;
4137 EXTEND (SP, wcount);
4138 for (i = 1; i <= wcount; ++i)
4139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
4140 }
4141}
4142
4143MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4144
4145void
4146_may_delete (SV *sem, int count, unsigned int extra_refs)
4147 PPCODE:
4148{
2468 AV *av = (AV *)SvRV (state); 4149 AV *av = (AV *)SvRV (sem);
2469 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2470 int i;
2471 4150
2472 errno = data->errorno; 4151 if (SvREFCNT ((SV *)av) == 1 + extra_refs
2473 PL_laststype = data->laststype; 4152 && AvFILLp (av) == 0 /* no waiters, just count */
2474 PL_laststatval = data->laststatval; 4153 && SvIV (AvARRAY (av)[0]) == count)
2475 PL_statcache = data->statcache; 4154 XSRETURN_YES;
2476 4155
4156 XSRETURN_NO;
4157}
4158
4159MODULE = Coro::State PACKAGE = Coro::Signal
4160
4161SV *
4162new (SV *klass)
4163 CODE:
4164 RETVAL = sv_bless (
4165 coro_waitarray_new (aTHX_ 0),
4166 GvSTASH (CvGV (cv))
4167 );
4168 OUTPUT:
4169 RETVAL
4170
4171void
4172wait (...)
4173 CODE:
4174 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
4175
4176void
4177broadcast (SV *self)
4178 CODE:
4179{
4180 AV *av = (AV *)SvRV (self);
4181 coro_signal_wake (aTHX_ av, AvFILLp (av));
4182}
4183
4184void
4185send (SV *self)
4186 CODE:
4187{
4188 AV *av = (AV *)SvRV (self);
4189
2477 EXTEND (SP, AvFILLp (av)); 4190 if (AvFILLp (av))
2478 for (i = 0; i < AvFILLp (av); ++i) 4191 coro_signal_wake (aTHX_ av, 1);
2479 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 4192 else
4193 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2480} 4194}
4195
4196IV
4197awaited (SV *self)
4198 CODE:
4199 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4200 OUTPUT:
4201 RETVAL
2481 4202
2482 4203
2483MODULE = Coro::State PACKAGE = Coro::AnyEvent 4204MODULE = Coro::State PACKAGE = Coro::AnyEvent
2484 4205
2485BOOT: 4206BOOT:
2486 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 4207 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2487 4208
2488SV * 4209void
2489_schedule (...) 4210_schedule (...)
2490 PROTOTYPE: @
2491 CODE: 4211 CODE:
2492{ 4212{
2493 static int incede; 4213 static int incede;
2494 4214
2495 api_cede_notself (); 4215 api_cede_notself (aTHX);
2496 4216
2497 ++incede; 4217 ++incede;
2498 while (coro_nready >= incede && api_cede ()) 4218 while (coro_nready >= incede && api_cede (aTHX))
2499 ; 4219 ;
2500 4220
2501 sv_setsv (sv_activity, &PL_sv_undef); 4221 sv_setsv (sv_activity, &PL_sv_undef);
2502 if (coro_nready >= incede) 4222 if (coro_nready >= incede)
2503 { 4223 {
2504 PUSHMARK (SP); 4224 PUSHMARK (SP);
2505 PUTBACK; 4225 PUTBACK;
2506 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 4226 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2507 SPAGAIN;
2508 } 4227 }
2509 4228
2510 --incede; 4229 --incede;
2511} 4230}
2512 4231
2513 4232
2514MODULE = Coro::State PACKAGE = PerlIO::cede 4233MODULE = Coro::State PACKAGE = Coro::AIO
2515 4234
2516BOOT: 4235void
2517 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4236_register (char *target, char *proto, SV *req)
4237 CODE:
4238{
4239 SV *req_cv = s_get_cv_croak (req);
4240 /* newXSproto doesn't return the CV on 5.8 */
4241 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
4242 sv_setpv ((SV *)slf_cv, proto);
4243 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
4244}
2518 4245
4246MODULE = Coro::State PACKAGE = Coro::Select
4247
4248void
4249patch_pp_sselect ()
4250 CODE:
4251 if (!coro_old_pp_sselect)
4252 {
4253 coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
4254 coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
4255 PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
4256 }
4257
4258void
4259unpatch_pp_sselect ()
4260 CODE:
4261 if (coro_old_pp_sselect)
4262 {
4263 PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
4264 coro_old_pp_sselect = 0;
4265 }
4266
4267MODULE = Coro::State PACKAGE = Coro::Util
4268
4269void
4270_exit (int code)
4271 CODE:
4272 _exit (code);
4273
4274NV
4275time ()
4276 CODE:
4277 RETVAL = nvtime (aTHX);
4278 OUTPUT:
4279 RETVAL
4280
4281NV
4282gettimeofday ()
4283 PPCODE:
4284{
4285 UV tv [2];
4286 u2time (aTHX_ tv);
4287 EXTEND (SP, 2);
4288 PUSHs (sv_2mortal (newSVuv (tv [0])));
4289 PUSHs (sv_2mortal (newSVuv (tv [1])));
4290}
4291

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