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Comparing Coro/Coro/State.xs (file contents):
Revision 1.276 by root, Sat Nov 15 07:49:48 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#if __GNUC__ >= 4 77#if __GNUC__ >= 4
78# define dSTACKLEVEL int stacklevel_dummy
122# define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) 79# define STACKLEVEL __builtin_frame_address (0)
123#else 80#else
124# define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel 81# define dSTACKLEVEL volatile void *stacklevel
82# define STACKLEVEL ((void *)&stacklevel)
125#endif 83#endif
126 84
127#define IN_DESTRUCT (PL_main_cv == Nullcv) 85#define IN_DESTRUCT PL_dirty
128
129#if __GNUC__ >= 3
130# define attribute(x) __attribute__(x)
131# define expect(expr,value) __builtin_expect ((expr),(value))
132# define INLINE static inline
133#else
134# define attribute(x)
135# define expect(expr,value) (expr)
136# define INLINE static
137#endif
138
139#define expect_false(expr) expect ((expr) != 0, 0)
140#define expect_true(expr) expect ((expr) != 0, 1)
141
142#define NOINLINE attribute ((noinline))
143 86
144#include "CoroAPI.h" 87#include "CoroAPI.h"
88#define GCoroAPI (&coroapi) /* very sneaky */
145 89
146#ifdef USE_ITHREADS 90#ifdef USE_ITHREADS
147
148static perl_mutex coro_lock;
149# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
150# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
151# if CORO_PTHREAD 91# if CORO_PTHREAD
152static void *coro_thx; 92static void *coro_thx;
153# endif 93# endif
94#endif
154 95
155#else 96#ifdef __linux
156 97# include <time.h> /* for timespec */
157# define LOCK (void)0 98# include <syscall.h> /* for SYS_* */
158# define UNLOCK (void)0 99# ifdef SYS_clock_gettime
159 100# 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
160#endif 103# endif
161 104#endif
162# undef LOCK
163# define LOCK (void)0
164# undef UNLOCK
165# define UNLOCK (void)0
166
167/* helper storage struct for Coro::AIO */
168struct io_state
169{
170 AV *res;
171 int errorno;
172 I32 laststype; /* U16 in 5.10.0 */
173 int laststatval;
174 Stat_t statcache;
175};
176 105
177static 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);
178 113
179static U32 cctx_gen; 114static U32 cctx_gen;
180static size_t cctx_stacksize = CORO_STACKSIZE; 115static size_t cctx_stacksize = CORO_STACKSIZE;
181static struct CoroAPI coroapi; 116static struct CoroAPI coroapi;
182static AV *main_mainstack; /* used to differentiate between $main and others */ 117static AV *main_mainstack; /* used to differentiate between $main and others */
183static JMPENV *main_top_env; 118static JMPENV *main_top_env;
184static HV *coro_state_stash, *coro_stash; 119static HV *coro_state_stash, *coro_stash;
185static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ 120static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
186static volatile struct coro *transfer_next; 121
122static AV *av_destroy; /* destruction queue */
123static SV *sv_manager; /* the manager coro */
124static SV *sv_idle; /* $Coro::idle */
187 125
188static GV *irsgv; /* $/ */ 126static GV *irsgv; /* $/ */
189static GV *stdoutgv; /* *STDOUT */ 127static GV *stdoutgv; /* *STDOUT */
190static SV *rv_diehook; 128static SV *rv_diehook;
191static SV *rv_warnhook; 129static SV *rv_warnhook;
192static HV *hv_sig; /* %SIG */ 130static HV *hv_sig; /* %SIG */
193 131
194/* async_pool helper stuff */ 132/* async_pool helper stuff */
195static SV *sv_pool_rss; 133static SV *sv_pool_rss;
196static SV *sv_pool_size; 134static SV *sv_pool_size;
135static SV *sv_async_pool_idle; /* description string */
197static AV *av_async_pool; 136static AV *av_async_pool; /* idle pool */
137static SV *sv_Coro; /* class string */
138static CV *cv_pool_handler;
198 139
199/* Coro::AnyEvent */ 140/* Coro::AnyEvent */
200static SV *sv_activity; 141static SV *sv_activity;
201 142
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
202static struct coro_cctx *cctx_first; 149static struct coro_cctx *cctx_first;
203static int cctx_count, cctx_idle; 150static int cctx_count, cctx_idle;
204 151
205enum { 152enum
153{
206 CC_MAPPED = 0x01, 154 CC_MAPPED = 0x01,
207 CC_NOREUSE = 0x02, /* throw this away after tracing */ 155 CC_NOREUSE = 0x02, /* throw this away after tracing */
208 CC_TRACE = 0x04, 156 CC_TRACE = 0x04,
209 CC_TRACE_SUB = 0x08, /* trace sub calls */ 157 CC_TRACE_SUB = 0x08, /* trace sub calls */
210 CC_TRACE_LINE = 0x10, /* trace each statement */ 158 CC_TRACE_LINE = 0x10, /* trace each statement */
… …
215typedef struct coro_cctx 163typedef struct coro_cctx
216{ 164{
217 struct coro_cctx *next; 165 struct coro_cctx *next;
218 166
219 /* the stack */ 167 /* the stack */
220 void *sptr; 168 struct coro_stack stack;
221 size_t ssize;
222 169
223 /* cpu state */ 170 /* cpu state */
224 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
225 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
226 JMPENV *top_env; 175 JMPENV *top_env;
227 coro_context cctx; 176 coro_context cctx;
228 177
229 U32 gen; 178 U32 gen;
230#if CORO_USE_VALGRIND 179#if CORO_USE_VALGRIND
231 int valgrind_id; 180 int valgrind_id;
232#endif 181#endif
233 unsigned char flags; 182 unsigned char flags;
234} coro_cctx; 183} coro_cctx;
235 184
185static coro_cctx *cctx_current; /* the currently running cctx */
186
187/*****************************************************************************/
188
189static MGVTBL coro_state_vtbl;
190
236enum { 191enum
192{
237 CF_RUNNING = 0x0001, /* coroutine is running */ 193 CF_RUNNING = 0x0001, /* coroutine is running */
238 CF_READY = 0x0002, /* coroutine is ready */ 194 CF_READY = 0x0002, /* coroutine is ready */
239 CF_NEW = 0x0004, /* has never been switched to */ 195 CF_NEW = 0x0004, /* has never been switched to */
240 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) */
241}; 199};
242 200
243/* 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 */
244typedef struct 202typedef struct
245{ 203{
246 SV *defsv;
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 */
263 struct CoroSLF slf_frame; /* saved slf frame */ 221 struct CoroSLF slf_frame; /* saved slf frame */
264 AV *mainstack; 222 AV *mainstack;
265 perl_slots *slot; /* basically the saved sp */ 223 perl_slots *slot; /* basically the saved sp */
266 224
225 CV *startcv; /* the CV to execute */
267 AV *args; /* data associated with this coroutine (initial args) */ 226 AV *args; /* data associated with this coroutine (initial args) */
268 int refcnt; /* coroutines are refcounted, yes */
269 int flags; /* CF_ flags */ 227 int flags; /* CF_ flags */
270 HV *hv; /* the perl hash associated with this coro, if any */ 228 HV *hv; /* the perl hash associated with this coro, if any */
271 229
272 /* statistics */ 230 /* statistics */
273 int usecount; /* number of transfers to this coro */ 231 int usecount; /* number of transfers to this coro */
274 232
275 /* coro process data */ 233 /* coro process data */
276 int prio; 234 int prio;
277 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 */
278 239
279 /* async_pool */ 240 /* async_pool */
280 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;
281 254
282 /* linked list */ 255 /* linked list */
283 struct coro *next, *prev; 256 struct coro *next, *prev;
284}; 257};
285 258
286typedef struct coro *Coro__State; 259typedef struct coro *Coro__State;
287typedef struct coro *Coro__State_or_hashref; 260typedef struct coro *Coro__State_or_hashref;
288 261
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 */
289static struct CoroSLF slf_frame; /* the current slf frame */ 265static struct CoroSLF slf_frame; /* the current slf frame */
290 266
291/** Coro ********************************************************************/ 267/** Coro ********************************************************************/
292 268
293#define PRIO_MAX 3 269#define CORO_PRIO_MAX 3
294#define PRIO_HIGH 1 270#define CORO_PRIO_HIGH 1
295#define PRIO_NORMAL 0 271#define CORO_PRIO_NORMAL 0
296#define PRIO_LOW -1 272#define CORO_PRIO_LOW -1
297#define PRIO_IDLE -3 273#define CORO_PRIO_IDLE -3
298#define PRIO_MIN -4 274#define CORO_PRIO_MIN -4
299 275
300/* for Coro.pm */ 276/* for Coro.pm */
301static SV *coro_current; 277static SV *coro_current;
302static SV *coro_readyhook; 278static SV *coro_readyhook;
303static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; 279static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
280static CV *cv_coro_run;
304static struct coro *coro_first; 281static struct coro *coro_first;
305#define coro_nready coroapi.nready 282#define coro_nready coroapi.nready
306 283
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
378
307/** lowlevel stuff **********************************************************/ 379/** lowlevel stuff **********************************************************/
308 380
309static SV * 381static SV * ecb_noinline
310coro_get_sv (pTHX_ const char *name, int create) 382coro_get_sv (pTHX_ const char *name, int create)
311{ 383{
312#if PERL_VERSION_ATLEAST (5,10,0) 384#if PERL_VERSION_ATLEAST (5,10,0)
313 /* 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 */
314 get_sv (name, create); 386 get_sv (name, create);
315#endif 387#endif
316 return get_sv (name, create); 388 return get_sv (name, create);
317} 389}
318 390
319static AV * 391static AV * ecb_noinline
320coro_get_av (pTHX_ const char *name, int create) 392coro_get_av (pTHX_ const char *name, int create)
321{ 393{
322#if PERL_VERSION_ATLEAST (5,10,0) 394#if PERL_VERSION_ATLEAST (5,10,0)
323 /* 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 */
324 get_av (name, create); 396 get_av (name, create);
325#endif 397#endif
326 return get_av (name, create); 398 return get_av (name, create);
327} 399}
328 400
329static HV * 401static HV * ecb_noinline
330coro_get_hv (pTHX_ const char *name, int create) 402coro_get_hv (pTHX_ const char *name, int create)
331{ 403{
332#if PERL_VERSION_ATLEAST (5,10,0) 404#if PERL_VERSION_ATLEAST (5,10,0)
333 /* 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 */
334 get_hv (name, create); 406 get_hv (name, create);
335#endif 407#endif
336 return get_hv (name, create); 408 return get_hv (name, create);
337} 409}
338 410
339static 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 *
340coro_clone_padlist (pTHX_ CV *cv) 517coro_derive_padlist (pTHX_ CV *cv)
341{ 518{
342 AV *padlist = CvPADLIST (cv); 519 PADLIST *padlist = CvPADLIST (cv);
343 AV *newpadlist, *newpad; 520 PADLIST *newpadlist;
521 PAD *newpad;
522 PADOFFSET off = PadlistMAX (padlist) + 1;
344 523
345 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. */
346 AvREAL_off (newpadlist); 552 AvREAL_off (newpadlist);
347#if PERL_VERSION_ATLEAST (5,10,0)
348 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
349#else
350 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
351#endif 553#endif
352 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
353 --AvFILLp (padlist);
354 554
355 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); 555 /* Already extended to 2 elements by newPADLIST. */
356 av_store (newpadlist, 1, (SV *)newpad); 556 PadlistMAX (newpadlist) = 1;
557 PadlistNAMES (newpadlist) = (PADNAMELIST *)SvREFCNT_inc_NN (PadlistNAMES (padlist));
558 PadlistARRAY (newpadlist)[1] = newpad;
357 559
358 return newpadlist; 560 return newpadlist;
359} 561}
360 562
361static void 563ecb_inline void
362free_padlist (pTHX_ AV *padlist) 564free_padlist (pTHX_ PADLIST *padlist)
363{ 565{
364 /* may be during global destruction */ 566 /* may be during global destruction */
365 if (SvREFCNT (padlist)) 567 if (!IN_DESTRUCT)
366 { 568 {
367 I32 i = AvFILLp (padlist); 569 I32 i = PadlistMAX (padlist);
368 while (i >= 0) 570
571 while (i > 0) /* special-case index 0 */
369 { 572 {
370 SV **svp = av_fetch (padlist, i--, FALSE); 573 /* we try to be extra-careful here */
574 PAD *pad = PadlistARRAY (padlist)[i--];
575
371 if (svp) 576 if (pad)
372 { 577 {
373 SV *sv; 578 I32 j = PadMAX (pad);
374 while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) 579
580 while (j >= 0)
375 SvREFCNT_dec (sv); 581 SvREFCNT_dec (PadARRAY (pad)[j--]);
376 582
583 PadMAX (pad) = -1;
377 SvREFCNT_dec (*svp); 584 SvREFCNT_dec (pad);
378 } 585 }
379 } 586 }
380 587
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);
381 SvREFCNT_dec ((SV*)padlist); 596 SvREFCNT_dec ((SV*)padlist);
597#endif
382 } 598 }
383} 599}
384 600
385static int 601static int
386coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 602coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
387{ 603{
388 AV *padlist; 604 PADLIST *padlist;
389 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;
390 607
391 /* casting is fun. */ 608 /* perl manages to free our internal AV and _then_ call us */
392 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 609 if (IN_DESTRUCT)
610 return 0;
611
612 while (len--)
393 free_padlist (aTHX_ padlist); 613 free_padlist (aTHX_ padlists[len]);
394
395 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
396 614
397 return 0; 615 return 0;
398} 616}
399
400#define CORO_MAGIC_type_cv PERL_MAGIC_ext
401#define CORO_MAGIC_type_state PERL_MAGIC_ext
402 617
403static MGVTBL coro_cv_vtbl = { 618static MGVTBL coro_cv_vtbl = {
404 0, 0, 0, 0, 619 0, 0, 0, 0,
405 coro_cv_free 620 coro_cv_free
406}; 621};
407 622
408#define CORO_MAGIC(sv, type) \
409 SvMAGIC (sv) \
410 ? SvMAGIC (sv)->mg_type == type \
411 ? SvMAGIC (sv) \
412 : mg_find (sv, type) \
413 : 0
414
415#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
416#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
417
418INLINE struct coro *
419SvSTATE_ (pTHX_ SV *coro)
420{
421 HV *stash;
422 MAGIC *mg;
423
424 if (SvROK (coro))
425 coro = SvRV (coro);
426
427 if (expect_false (SvTYPE (coro) != SVt_PVHV))
428 croak ("Coro::State object required");
429
430 stash = SvSTASH (coro);
431 if (expect_false (stash != coro_stash && stash != coro_state_stash))
432 {
433 /* very slow, but rare, check */
434 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
435 croak ("Coro::State object required");
436 }
437
438 mg = CORO_MAGIC_state (coro);
439 return (struct coro *)mg->mg_ptr;
440}
441
442#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
443
444/* the next two functions merely cache the padlists */ 623/* the next two functions merely cache the padlists */
445static void 624ecb_inline void
446get_padlist (pTHX_ CV *cv) 625get_padlist (pTHX_ CV *cv)
447{ 626{
448 MAGIC *mg = CORO_MAGIC_cv (cv); 627 MAGIC *mg = CORO_MAGIC_cv (cv);
449 AV *av; 628 size_t *lenp;
450 629
451 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) 630 if (ecb_expect_true (mg && *(lenp = (size_t *)mg->mg_ptr)))
452 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 631 CvPADLIST (cv) = ((PADLIST **)(mg->mg_ptr + sizeof(size_t)))[--*lenp];
453 else 632 else
454 { 633 {
455#if CORO_PREFER_PERL_FUNCTIONS 634#if CORO_PREFER_PERL_FUNCTIONS
456 /* this is probably cleaner? but also slower! */ 635 /* this is probably cleaner? but also slower! */
457 /* in practise, it seems to be less stable */ 636 /* in practise, it seems to be less stable */
458 CV *cp = Perl_cv_clone (cv); 637 CV *cp = Perl_cv_clone (aTHX_ cv);
459 CvPADLIST (cv) = CvPADLIST (cp); 638 CvPADLIST (cv) = CvPADLIST (cp);
460 CvPADLIST (cp) = 0; 639 CvPADLIST (cp) = 0;
461 SvREFCNT_dec (cp); 640 SvREFCNT_dec (cp);
462#else 641#else
463 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 642 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
464#endif 643#endif
465 } 644 }
466} 645}
467 646
468static void 647ecb_inline void
469put_padlist (pTHX_ CV *cv) 648put_padlist (pTHX_ CV *cv)
470{ 649{
471 MAGIC *mg = CORO_MAGIC_cv (cv); 650 MAGIC *mg = CORO_MAGIC_cv (cv);
472 AV *av;
473 651
474 if (expect_false (!mg)) 652 if (ecb_expect_false (!mg))
653 {
475 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);
476 662
477 av = (AV *)mg->mg_obj; 663 ((PADLIST **)(mg->mg_ptr + sizeof (size_t))) [(*(size_t *)mg->mg_ptr)++] = CvPADLIST (cv);
478
479 if (expect_false (AvFILLp (av) >= AvMAX (av)))
480 av_extend (av, AvMAX (av) + 1);
481
482 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
483} 664}
484 665
485/** 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);
486 722
487static void 723static void
488load_perl (pTHX_ Coro__State c) 724load_perl (pTHX_ Coro__State c)
489{ 725{
490 perl_slots *slot = c->slot; 726 perl_slots *slot = c->slot;
491 c->slot = 0; 727 c->slot = 0;
492 728
493 PL_mainstack = c->mainstack; 729 PL_mainstack = c->mainstack;
494 730
495 GvSV (PL_defgv) = slot->defsv; 731#if CORO_JIT
496 GvAV (PL_defgv) = slot->defav; 732 load_perl_slots (slot);
497 GvSV (PL_errgv) = slot->errsv; 733#else
498 GvSV (irsgv) = slot->irsgv;
499
500 #define VAR(name,type) PL_ ## name = slot->name; 734 #define VARx(name,expr,type) expr = slot->name;
501 # include "state.h" 735 #include "state.h"
502 #undef VAR 736#endif
503 737
504 { 738 {
505 dSP; 739 dSP;
506 740
507 CV *cv; 741 CV *cv;
508 742
509 /* now do the ugly restore mess */ 743 /* now do the ugly restore mess */
510 while (expect_true (cv = (CV *)POPs)) 744 while (ecb_expect_true (cv = (CV *)POPs))
511 { 745 {
512 put_padlist (aTHX_ cv); /* mark this padlist as available */ 746 put_padlist (aTHX_ cv); /* mark this padlist as available */
513 CvDEPTH (cv) = PTR2IV (POPs); 747 CvDEPTH (cv) = PTR2IV (POPs);
514 CvPADLIST (cv) = (AV *)POPs; 748 CvPADLIST (cv) = (PADLIST *)POPs;
515 } 749 }
516 750
517 PUTBACK; 751 PUTBACK;
518 } 752 }
519 753
520 slf_frame = c->slf_frame; 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);
521} 774}
522 775
523static void 776static void
524save_perl (pTHX_ Coro__State c) 777save_perl (pTHX_ Coro__State c)
525{ 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;
526 c->slf_frame = slf_frame; 798 c->slf_frame = slf_frame;
527 799
528 { 800 {
529 dSP; 801 dSP;
530 I32 cxix = cxstack_ix; 802 I32 cxix = cxstack_ix;
… …
538 810
539 XPUSHs (Nullsv); 811 XPUSHs (Nullsv);
540 /* this loop was inspired by pp_caller */ 812 /* this loop was inspired by pp_caller */
541 for (;;) 813 for (;;)
542 { 814 {
543 while (expect_true (cxix >= 0)) 815 while (ecb_expect_true (cxix >= 0))
544 { 816 {
545 PERL_CONTEXT *cx = &ccstk[cxix--]; 817 PERL_CONTEXT *cx = &ccstk[cxix--];
546 818
547 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))
548 { 820 {
549 CV *cv = cx->blk_sub.cv; 821 CV *cv = cx->blk_sub.cv;
550 822
551 if (expect_true (CvDEPTH (cv))) 823 if (ecb_expect_true (CvDEPTH (cv)))
552 { 824 {
553 EXTEND (SP, 3); 825 EXTEND (SP, 3);
554 PUSHs ((SV *)CvPADLIST (cv)); 826 PUSHs ((SV *)CvPADLIST (cv));
555 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); 827 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
556 PUSHs ((SV *)cv); 828 PUSHs ((SV *)cv);
… …
559 get_padlist (aTHX_ cv); 831 get_padlist (aTHX_ cv);
560 } 832 }
561 } 833 }
562 } 834 }
563 835
564 if (expect_true (top_si->si_type == PERLSI_MAIN)) 836 if (ecb_expect_true (top_si->si_type == PERLSI_MAIN))
565 break; 837 break;
566 838
567 top_si = top_si->si_prev; 839 top_si = top_si->si_prev;
568 ccstk = top_si->si_cxstack; 840 ccstk = top_si->si_cxstack;
569 cxix = top_si->si_cxix; 841 cxix = top_si->si_cxix;
… …
571 843
572 PUTBACK; 844 PUTBACK;
573 } 845 }
574 846
575 /* allocate some space on the context stack for our purposes */ 847 /* allocate some space on the context stack for our purposes */
576 /* we manually unroll here, as usually 2 slots is enough */ 848 if (ecb_expect_false (cxstack_ix + (int)SLOT_COUNT >= cxstack_max))
577 if (SLOT_COUNT >= 1) CXINC;
578 if (SLOT_COUNT >= 2) CXINC;
579 if (SLOT_COUNT >= 3) CXINC;
580 { 849 {
581 int i; 850 unsigned int i;
851
582 for (i = 3; i < SLOT_COUNT; ++i) 852 for (i = 0; i < SLOT_COUNT; ++i)
583 CXINC; 853 CXINC;
584 } 854
585 cxstack_ix -= SLOT_COUNT; /* undo allocation */ 855 cxstack_ix -= SLOT_COUNT; /* undo allocation */
856 }
586 857
587 c->mainstack = PL_mainstack; 858 c->mainstack = PL_mainstack;
588 859
589 { 860 {
590 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); 861 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
591 862
592 slot->defav = GvAV (PL_defgv); 863#if CORO_JIT
593 slot->defsv = DEFSV; 864 save_perl_slots (slot);
594 slot->errsv = ERRSV; 865#else
595 slot->irsgv = GvSV (irsgv);
596
597 #define VAR(name,type) slot->name = PL_ ## name; 866 #define VARx(name,expr,type) slot->name = expr;
598 # include "state.h" 867 #include "state.h"
599 #undef VAR 868#endif
600 } 869 }
601} 870}
602 871
603/* 872/*
604 * allocate various perl stacks. This is almost an exact copy 873 * allocate various perl stacks. This is almost an exact copy
605 * of perl.c:init_stacks, except that it uses less memory 874 * of perl.c:init_stacks, except that it uses less memory
606 * on the (sometimes correct) assumption that coroutines do 875 * on the (sometimes correct) assumption that coroutines do
607 * not usually need a lot of stackspace. 876 * not usually need a lot of stackspace.
608 */ 877 */
609#if CORO_PREFER_PERL_FUNCTIONS 878#if CORO_PREFER_PERL_FUNCTIONS
610# define coro_init_stacks init_stacks 879# define coro_init_stacks(thx) init_stacks ()
611#else 880#else
612static void 881static void
613coro_init_stacks (pTHX) 882coro_init_stacks (pTHX)
614{ 883{
615 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() */
616 PL_curstackinfo->si_type = PERLSI_MAIN; 885 PL_curstackinfo->si_type = PERLSI_MAIN;
617 PL_curstack = PL_curstackinfo->si_stack; 886 PL_curstack = PL_curstackinfo->si_stack;
618 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 887 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
619 888
620 PL_stack_base = AvARRAY(PL_curstack); 889 PL_stack_base = AvARRAY(PL_curstack);
… …
635#endif 904#endif
636 905
637 New(54,PL_scopestack,8,I32); 906 New(54,PL_scopestack,8,I32);
638 PL_scopestack_ix = 0; 907 PL_scopestack_ix = 0;
639 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
640 912
641 New(54,PL_savestack,24,ANY); 913 New(54,PL_savestack,24,ANY);
642 PL_savestack_ix = 0; 914 PL_savestack_ix = 0;
643 PL_savestack_max = 24; 915 PL_savestack_max = 24;
644 916
… …
672 } 944 }
673 945
674 Safefree (PL_tmps_stack); 946 Safefree (PL_tmps_stack);
675 Safefree (PL_markstack); 947 Safefree (PL_markstack);
676 Safefree (PL_scopestack); 948 Safefree (PL_scopestack);
949#if HAS_SCOPESTACK_NAME
950 Safefree (PL_scopestack_name);
951#endif
677 Safefree (PL_savestack); 952 Safefree (PL_savestack);
678#if !PERL_VERSION_ATLEAST (5,10,0) 953#if !PERL_VERSION_ATLEAST (5,10,0)
679 Safefree (PL_retstack); 954 Safefree (PL_retstack);
680#endif 955#endif
681} 956}
682 957
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
683static size_t 967static size_t
684coro_rss (pTHX_ struct coro *coro) 968coro_rss (pTHX_ struct coro *coro)
685{ 969{
686 size_t rss = sizeof (*coro); 970 size_t rss = sizeof (*coro);
687 971
688 if (coro->mainstack) 972 if (coro->mainstack)
689 { 973 {
690 perl_slots tmp_slot;
691 perl_slots *slot;
692
693 if (coro->flags & CF_RUNNING) 974 if (coro->flags & CF_RUNNING)
694 { 975 {
695 slot = &tmp_slot; 976 #define SYM(sym) PL_ ## sym
696 977 CORO_RSS;
697 #define VAR(name,type) slot->name = PL_ ## name;
698 # include "state.h"
699 #undef VAR 978 #undef SYM
700 } 979 }
701 else 980 else
702 slot = coro->slot;
703
704 if (slot)
705 { 981 {
706 rss += sizeof (slot->curstackinfo); 982 #define SYM(sym) coro->slot->sym
707 rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); 983 CORO_RSS;
708 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); 984 #undef SYM
709 rss += slot->tmps_max * sizeof (SV *);
710 rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
711 rss += slot->scopestack_max * sizeof (I32);
712 rss += slot->savestack_max * sizeof (ANY);
713
714#if !PERL_VERSION_ATLEAST (5,10,0)
715 rss += slot->retstack_max * sizeof (OP *);
716#endif
717 } 985 }
718 } 986 }
719 987
720 return rss; 988 return rss;
721} 989}
… …
734#endif 1002#endif
735 1003
736/* 1004/*
737 * This overrides the default magic get method of %SIG elements. 1005 * This overrides the default magic get method of %SIG elements.
738 * 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
739 * 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),
740 * readback here. 1008 * we just provide our own readback here.
741 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
742 * not expecting this to actually change the hook. This is a potential problem
743 * when a schedule happens then, but we ignore this.
744 */ 1009 */
745static int 1010static int ecb_cold
746coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) 1011coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
747{ 1012{
748 const char *s = MgPV_nolen_const (mg); 1013 const char *s = MgPV_nolen_const (mg);
749 1014
750 if (*s == '_') 1015 if (*s == '_')
751 { 1016 {
752 SV **svp = 0; 1017 SV **svp = 0;
753 1018
754 if (strEQ (s, "__DIE__" )) svp = &PL_diehook; 1019 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
755 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1020 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
756 1021
757 if (svp) 1022 if (svp)
758 { 1023 {
759 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);
760 return 0; 1034 return 0;
761 } 1035 }
762 } 1036 }
763 1037
764 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; 1038 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
765} 1039}
766 1040
767static int 1041static int ecb_cold
768coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) 1042coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
769{ 1043{
770 const char *s = MgPV_nolen_const (mg); 1044 const char *s = MgPV_nolen_const (mg);
771 1045
772 if (*s == '_') 1046 if (*s == '_')
… …
786 } 1060 }
787 1061
788 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; 1062 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
789} 1063}
790 1064
791static int 1065static int ecb_cold
792coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) 1066coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
793{ 1067{
794 const char *s = MgPV_nolen_const (mg); 1068 const char *s = MgPV_nolen_const (mg);
795 1069
796 if (*s == '_') 1070 if (*s == '_')
… …
801 if (strEQ (s, "__WARN__")) svp = &PL_warnhook; 1075 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
802 1076
803 if (svp) 1077 if (svp)
804 { 1078 {
805 SV *old = *svp; 1079 SV *old = *svp;
806 *svp = newSVsv (sv); 1080 *svp = SvOK (sv) ? newSVsv (sv) : 0;
807 SvREFCNT_dec (old); 1081 SvREFCNT_dec (old);
808 return 0; 1082 return 0;
809 } 1083 }
810 } 1084 }
811 1085
812 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 1086 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
813} 1087}
814 1088
815static void 1089static void
816prepare_nop (aTHX_ struct coro_transfer_args *ta) 1090prepare_nop (pTHX_ struct coro_transfer_args *ta)
817{ 1091{
818 /* kind of mega-hacky, but works */ 1092 /* kind of mega-hacky, but works */
819 ta->next = ta->prev = (struct coro *)ta; 1093 ta->next = ta->prev = (struct coro *)ta;
820} 1094}
821 1095
822static int 1096static int
823slf_check_nop (aTHX) 1097slf_check_nop (pTHX_ struct CoroSLF *frame)
824{ 1098{
825 return 0; 1099 return 0;
826} 1100}
827 1101
828static void 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 */
829coro_setup (pTHX_ struct coro *coro) 1111init_perl (pTHX_ struct coro *coro)
830{ 1112{
831 /* 1113 /*
832 * emulate part of the perl startup here. 1114 * emulate part of the perl startup here.
833 */ 1115 */
834 coro_init_stacks (aTHX); 1116 coro_init_stacks (aTHX);
835 1117
836 PL_runops = RUNOPS_DEFAULT; 1118 PL_runops = RUNOPS_DEFAULT;
837 PL_curcop = &PL_compiling; 1119 PL_curcop = &PL_compiling;
838 PL_in_eval = EVAL_NULL; 1120 PL_in_eval = EVAL_NULL;
839 PL_comppad = 0; 1121 PL_comppad = 0;
1122 PL_comppad_name = 0;
1123 PL_comppad_name_fill = 0;
1124 PL_comppad_name_floor = 0;
840 PL_curpm = 0; 1125 PL_curpm = 0;
841 PL_curpad = 0; 1126 PL_curpad = 0;
842 PL_localizing = 0; 1127 PL_localizing = 0;
843 PL_dirty = 0;
844 PL_restartop = 0; 1128 PL_restartop = 0;
845#if PERL_VERSION_ATLEAST (5,10,0) 1129#if PERL_VERSION_ATLEAST (5,10,0)
846 PL_parser = 0; 1130 PL_parser = 0;
847#endif 1131#endif
1132 PL_hints = 0;
848 1133
849 /* recreate the die/warn hooks */ 1134 /* recreate the die/warn hooks */
850 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); 1135 PL_diehook = SvREFCNT_inc (rv_diehook);
851 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); 1136 PL_warnhook = SvREFCNT_inc (rv_warnhook);
852 1137
853 GvSV (PL_defgv) = newSV (0); 1138 GvSV (PL_defgv) = newSV (0);
854 GvAV (PL_defgv) = coro->args; coro->args = 0; 1139 GvAV (PL_defgv) = coro->args; coro->args = 0;
855 GvSV (PL_errgv) = newSV (0); 1140 GvSV (PL_errgv) = newSV (0);
856 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;
857 PL_rs = newSVsv (GvSV (irsgv)); 1143 PL_rs = newSVsv (GvSV (irsgv));
858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 1144 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
859 1145
860 { 1146 {
861 dSP; 1147 dSP;
862 UNOP myop; 1148 UNOP myop;
863 1149
864 Zero (&myop, 1, UNOP); 1150 Zero (&myop, 1, UNOP);
865 myop.op_next = Nullop; 1151 myop.op_next = Nullop;
1152 myop.op_type = OP_ENTERSUB;
866 myop.op_flags = OPf_WANT_VOID; 1153 myop.op_flags = OPf_WANT_VOID;
867 1154
868 PUSHMARK (SP); 1155 PUSHMARK (SP);
869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 1156 PUSHs ((SV *)coro->startcv);
870 PUTBACK; 1157 PUTBACK;
871 PL_op = (OP *)&myop; 1158 PL_op = (OP *)&myop;
872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1159 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
873 SPAGAIN;
874 } 1160 }
875 1161
876 /* 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
877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. 1163 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
878 */ 1164 */
879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ 1165 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ 1166 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
881} 1167 slf_frame.destroy = 0;
882 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
883static void 1189static void
884coro_destruct (pTHX_ struct coro *coro) 1190coro_unwind_stacks (pTHX)
885{ 1191{
886 if (!IN_DESTRUCT) 1192 if (!IN_DESTRUCT)
887 { 1193 {
888 /* restore all saved variables and stuff */ 1194 /* restore all saved variables and stuff */
889 LEAVE_SCOPE (0); 1195 LEAVE_SCOPE (0);
… …
897 POPSTACK_TO (PL_mainstack); 1203 POPSTACK_TO (PL_mainstack);
898 1204
899 /* unwind main stack */ 1205 /* unwind main stack */
900 dounwind (-1); 1206 dounwind (-1);
901 } 1207 }
1208}
902 1209
903 SvREFCNT_dec (GvSV (PL_defgv)); 1210static void
904 SvREFCNT_dec (GvAV (PL_defgv)); 1211destroy_perl (pTHX_ struct coro *coro)
905 SvREFCNT_dec (GvSV (PL_errgv)); 1212{
906 SvREFCNT_dec (PL_defoutgv); 1213 SV *svf [9];
907 SvREFCNT_dec (PL_rs);
908 SvREFCNT_dec (GvSV (irsgv));
909 1214
910 SvREFCNT_dec (PL_diehook);
911 SvREFCNT_dec (PL_warnhook);
912 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
913 SvREFCNT_dec (coro->saved_deffh); 1258 SvREFCNT_dec (coro->saved_deffh);
914 SvREFCNT_dec (coro->throw); 1259 SvREFCNT_dec (coro->rouse_cb);
915 1260 SvREFCNT_dec (coro->invoke_cb);
916 coro_destruct_stacks (aTHX); 1261 SvREFCNT_dec (coro->invoke_av);
1262 }
917} 1263}
918 1264
919INLINE void 1265ecb_inline void
920free_coro_mortal (pTHX) 1266free_coro_mortal (pTHX)
921{ 1267{
922 if (expect_true (coro_mortal)) 1268 if (ecb_expect_true (coro_mortal))
923 { 1269 {
924 SvREFCNT_dec (coro_mortal); 1270 SvREFCNT_dec ((SV *)coro_mortal);
925 coro_mortal = 0; 1271 coro_mortal = 0;
926 } 1272 }
927} 1273}
928 1274
929static int 1275static int
930runops_trace (pTHX) 1276runops_trace (pTHX)
931{ 1277{
932 COP *oldcop = 0; 1278 COP *oldcop = 0;
933 int oldcxix = -2; 1279 int oldcxix = -2;
934 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
935 coro_cctx *cctx = coro->cctx;
936 1280
937 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 1281 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
938 { 1282 {
939 PERL_ASYNC_CHECK (); 1283 PERL_ASYNC_CHECK ();
940 1284
941 if (cctx->flags & CC_TRACE_ALL) 1285 if (cctx_current->flags & CC_TRACE_ALL)
942 { 1286 {
943 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)
944 { 1288 {
945 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1289 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
946 SV **bot, **top; 1290 SV **bot, **top;
947 AV *av = newAV (); /* return values */ 1291 AV *av = newAV (); /* return values */
948 SV **cb; 1292 SV **cb;
… …
985 1329
986 if (PL_curcop != &PL_compiling) 1330 if (PL_curcop != &PL_compiling)
987 { 1331 {
988 SV **cb; 1332 SV **cb;
989 1333
990 if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) 1334 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
991 { 1335 {
992 PERL_CONTEXT *cx = &cxstack[cxstack_ix]; 1336 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
993 1337
994 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) 1338 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
995 { 1339 {
996 runops_proc_t old_runops = PL_runops;
997 dSP; 1340 dSP;
998 GV *gv = CvGV (cx->blk_sub.cv); 1341 GV *gv = CvGV (cx->blk_sub.cv);
999 SV *fullname = sv_2mortal (newSV (0)); 1342 SV *fullname = sv_2mortal (newSV (0));
1000 1343
1001 if (isGV (gv)) 1344 if (isGV (gv))
… …
1006 SAVETMPS; 1349 SAVETMPS;
1007 EXTEND (SP, 3); 1350 EXTEND (SP, 3);
1008 PUSHMARK (SP); 1351 PUSHMARK (SP);
1009 PUSHs (&PL_sv_yes); 1352 PUSHs (&PL_sv_yes);
1010 PUSHs (fullname); 1353 PUSHs (fullname);
1011 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);
1012 PUTBACK; 1355 PUTBACK;
1013 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);
1014 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);
1015 SPAGAIN; 1358 SPAGAIN;
1016 FREETMPS; 1359 FREETMPS;
… …
1019 } 1362 }
1020 1363
1021 oldcxix = cxstack_ix; 1364 oldcxix = cxstack_ix;
1022 } 1365 }
1023 1366
1024 if (cctx->flags & CC_TRACE_LINE) 1367 if (cctx_current->flags & CC_TRACE_LINE)
1025 { 1368 {
1026 dSP; 1369 dSP;
1027 1370
1028 PL_runops = RUNOPS_DEFAULT; 1371 PL_runops = RUNOPS_DEFAULT;
1029 ENTER; 1372 ENTER;
… …
1048 1391
1049 TAINT_NOT; 1392 TAINT_NOT;
1050 return 0; 1393 return 0;
1051} 1394}
1052 1395
1396static struct CoroSLF cctx_ssl_frame;
1397
1053static void 1398static void
1054prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) 1399slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1055{ 1400{
1056 ta->prev = (struct coro *)cctx;
1057 ta->next = 0; 1401 ta->prev = 0;
1058} 1402}
1059 1403
1060/* inject a fake call to Coro::State::_cctx_init into the execution */ 1404static int
1061/* _cctx_init should be careful, as it could be called at almost any time */ 1405slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1062/* during execution of a perl program */
1063/* also initialises PL_top_env */
1064static void NOINLINE
1065cctx_prepare (pTHX_ coro_cctx *cctx)
1066{ 1406{
1067 dSP; 1407 *frame = cctx_ssl_frame;
1068 UNOP myop;
1069 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{
1070 PL_top_env = &PL_start_env; 1416 PL_top_env = &PL_start_env;
1071 1417
1072 if (cctx->flags & CC_TRACE) 1418 if (cctx_current->flags & CC_TRACE)
1073 PL_runops = runops_trace; 1419 PL_runops = runops_trace;
1074 1420
1075 Zero (&myop, 1, UNOP); 1421 /* we already must be executing an SLF op, there is no other valid way
1076 myop.op_next = PL_op; 1422 * that can lead to creation of a new cctx */
1077 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));
1078 1425
1079 PUSHMARK (SP); 1426 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1080 EXTEND (SP, 2); 1427 cctx_ssl_frame = slf_frame;
1081 PUSHs (sv_2mortal (newSViv ((IV)cctx))); 1428
1082 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1429 slf_frame.prepare = slf_prepare_set_stacklevel;
1083 PUTBACK; 1430 slf_frame.check = slf_check_set_stacklevel;
1084 PL_op = (OP *)&myop;
1085 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
1086 SPAGAIN;
1087} 1431}
1088 1432
1089/* 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 */
1090INLINE void 1434ecb_inline void
1091transfer_tail (pTHX) 1435transfer_tail (pTHX)
1092{ 1436{
1093 struct coro *next = (struct coro *)transfer_next;
1094 assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
1095 assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
1096
1097 free_coro_mortal (aTHX); 1437 free_coro_mortal (aTHX);
1098 UNLOCK; 1438}
1099 1439
1100 if (expect_false (next->throw)) 1440/* try to exit the same way perl's main function would do */
1101 { 1441/* we do not bother resetting the environment or other things *7
1102 SV *exception = sv_2mortal (next->throw); 1442/* that are not, uhm, essential */
1103 1443/* this obviously also doesn't work when perl is embedded */
1104 next->throw = 0; 1444static void ecb_noinline ecb_cold
1105 sv_setsv (ERRSV, exception); 1445perlish_exit (pTHX)
1106 croak (0); 1446{
1107 } 1447 int exitstatus = perl_destruct (PL_curinterp);
1448 perl_free (PL_curinterp);
1449 exit (exitstatus);
1108} 1450}
1109 1451
1110/* 1452/*
1111 * this is a _very_ stripped down perl interpreter ;) 1453 * this is a _very_ stripped down perl interpreter ;)
1112 */ 1454 */
… …
1124 /* normally we would need to skip the entersub here */ 1466 /* normally we would need to skip the entersub here */
1125 /* not doing so will re-execute it, which is exactly what we want */ 1467 /* not doing so will re-execute it, which is exactly what we want */
1126 /* PL_nop = PL_nop->op_next */ 1468 /* PL_nop = PL_nop->op_next */
1127 1469
1128 /* inject a fake subroutine call to cctx_init */ 1470 /* inject a fake subroutine call to cctx_init */
1129 cctx_prepare (aTHX_ (coro_cctx *)arg); 1471 cctx_prepare (aTHX);
1130 1472
1131 /* cctx_run is the alternative tail of transfer() */ 1473 /* cctx_run is the alternative tail of transfer() */
1132 /* TODO: throwing an exception here might be deadly, VERIFY */
1133 transfer_tail (aTHX); 1474 transfer_tail (aTHX);
1134 1475
1135 /* 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 */
1136 PL_restartop = PL_op; 1477 PL_restartop = PL_op;
1137 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 */
1138 1484
1139 /* 1485 /*
1140 * 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
1141 * 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)
1142 * 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
1143 * bootstrap-time "top" top_env, as we cannot restore the "main" 1489 * doing in that case. YMMV.
1144 * coroutine as Coro has no such concept
1145 */ 1490 */
1146 PL_top_env = main_top_env; 1491 perlish_exit (aTHX);
1147 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1148 } 1492 }
1149} 1493}
1150 1494
1151static coro_cctx * 1495static coro_cctx *
1152cctx_new () 1496cctx_new (void)
1153{ 1497{
1154 coro_cctx *cctx; 1498 coro_cctx *cctx;
1155 1499
1156 ++cctx_count; 1500 ++cctx_count;
1157 New (0, cctx, 1, coro_cctx); 1501 New (0, cctx, 1, coro_cctx);
… …
1163 return cctx; 1507 return cctx;
1164} 1508}
1165 1509
1166/* create a new cctx only suitable as source */ 1510/* create a new cctx only suitable as source */
1167static coro_cctx * 1511static coro_cctx *
1168cctx_new_empty () 1512cctx_new_empty (void)
1169{ 1513{
1170 coro_cctx *cctx = cctx_new (); 1514 coro_cctx *cctx = cctx_new ();
1171 1515
1172 cctx->sptr = 0; 1516 cctx->stack.sptr = 0;
1173 coro_create (&cctx->cctx, 0, 0, 0, 0); 1517 coro_create (&cctx->cctx, 0, 0, 0, 0);
1174 1518
1175 return cctx; 1519 return cctx;
1176} 1520}
1177 1521
1178/* create a new cctx suitable as destination/running a perl interpreter */ 1522/* create a new cctx suitable as destination/running a perl interpreter */
1179static coro_cctx * 1523static coro_cctx *
1180cctx_new_run () 1524cctx_new_run (void)
1181{ 1525{
1182 coro_cctx *cctx = cctx_new (); 1526 coro_cctx *cctx = cctx_new ();
1183 void *stack_start;
1184 size_t stack_size;
1185 1527
1186#if HAVE_MMAP 1528 if (!coro_stack_alloc (&cctx->stack, cctx_stacksize))
1187 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1188 /* mmap supposedly does allocate-on-write for us */
1189 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1190
1191 if (cctx->sptr != (void *)-1)
1192 {
1193 #if CORO_STACKGUARD
1194 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1195 #endif
1196 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1197 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1198 cctx->flags |= CC_MAPPED;
1199 } 1529 {
1200 else
1201#endif
1202 {
1203 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1204 New (0, cctx->sptr, cctx_stacksize, long);
1205
1206 if (!cctx->sptr)
1207 {
1208 perror ("FATAL: unable to allocate stack for coroutine, exiting."); 1530 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1209 _exit (EXIT_FAILURE); 1531 _exit (EXIT_FAILURE);
1210 }
1211
1212 stack_start = cctx->sptr;
1213 stack_size = cctx->ssize;
1214 } 1532 }
1215 1533
1216 #if CORO_USE_VALGRIND
1217 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1218 #endif
1219
1220 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);
1221 1535
1222 return cctx; 1536 return cctx;
1223} 1537}
1224 1538
1225static void 1539static void
1226cctx_destroy (coro_cctx *cctx) 1540cctx_destroy (coro_cctx *cctx)
1227{ 1541{
1228 if (!cctx) 1542 if (!cctx)
1229 return; 1543 return;
1230 1544
1545 assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1546
1231 --cctx_count; 1547 --cctx_count;
1232 coro_destroy (&cctx->cctx); 1548 coro_destroy (&cctx->cctx);
1233 1549
1234 /* coro_transfer creates new, empty cctx's */ 1550 coro_stack_free (&cctx->stack);
1235 if (cctx->sptr)
1236 {
1237 #if CORO_USE_VALGRIND
1238 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1239 #endif
1240
1241#if HAVE_MMAP
1242 if (cctx->flags & CC_MAPPED)
1243 munmap (cctx->sptr, cctx->ssize);
1244 else
1245#endif
1246 Safefree (cctx->sptr);
1247 }
1248 1551
1249 Safefree (cctx); 1552 Safefree (cctx);
1250} 1553}
1251 1554
1252/* wether this cctx should be destructed */ 1555/* wether this cctx should be destructed */
1253#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))
1254 1557
1255static coro_cctx * 1558static coro_cctx *
1256cctx_get (pTHX) 1559cctx_get (pTHX)
1257{ 1560{
1258 while (expect_true (cctx_first)) 1561 while (ecb_expect_true (cctx_first))
1259 { 1562 {
1260 coro_cctx *cctx = cctx_first; 1563 coro_cctx *cctx = cctx_first;
1261 cctx_first = cctx->next; 1564 cctx_first = cctx->next;
1262 --cctx_idle; 1565 --cctx_idle;
1263 1566
1264 if (expect_true (!CCTX_EXPIRED (cctx))) 1567 if (ecb_expect_true (!CCTX_EXPIRED (cctx)))
1265 return cctx; 1568 return cctx;
1266 1569
1267 cctx_destroy (cctx); 1570 cctx_destroy (cctx);
1268 } 1571 }
1269 1572
… …
1271} 1574}
1272 1575
1273static void 1576static void
1274cctx_put (coro_cctx *cctx) 1577cctx_put (coro_cctx *cctx)
1275{ 1578{
1276 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));
1277 1580
1278 /* free another cctx if overlimit */ 1581 /* free another cctx if overlimit */
1279 if (expect_false (cctx_idle >= cctx_max_idle)) 1582 if (ecb_expect_false (cctx_idle >= cctx_max_idle))
1280 { 1583 {
1281 coro_cctx *first = cctx_first; 1584 coro_cctx *first = cctx_first;
1282 cctx_first = first->next; 1585 cctx_first = first->next;
1283 --cctx_idle; 1586 --cctx_idle;
1284 1587
… …
1293/** coroutine switching *****************************************************/ 1596/** coroutine switching *****************************************************/
1294 1597
1295static void 1598static void
1296transfer_check (pTHX_ struct coro *prev, struct coro *next) 1599transfer_check (pTHX_ struct coro *prev, struct coro *next)
1297{ 1600{
1601 /* TODO: throwing up here is considered harmful */
1602
1298 if (expect_true (prev != next)) 1603 if (ecb_expect_true (prev != next))
1299 { 1604 {
1300 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1605 if (ecb_expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1301 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,");
1302 1607
1303 if (expect_false (next->flags & CF_RUNNING)) 1608 if (ecb_expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1304 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1305
1306 if (expect_false (next->flags & CF_DESTROYED))
1307 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,");
1308 1610
1309#if !PERL_VERSION_ATLEAST (5,10,0) 1611#if !PERL_VERSION_ATLEAST (5,10,0)
1310 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1612 if (ecb_expect_false (PL_lex_state != LEX_NOTPARSING))
1311 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,");
1312#endif 1614#endif
1313 } 1615 }
1314} 1616}
1315 1617
1316/* always use the TRANSFER macro */ 1618/* always use the TRANSFER macro */
1317static void NOINLINE 1619static void ecb_noinline /* noinline so we have a fixed stackframe */
1318transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1620transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1319{ 1621{
1320 dSTACKLEVEL; 1622 dSTACKLEVEL;
1321 1623
1322 /* sometimes transfer is only called to set idle_sp */ 1624 /* sometimes transfer is only called to set idle_sp */
1323 if (expect_false (!next)) 1625 if (ecb_expect_false (!prev))
1324 { 1626 {
1325 ((coro_cctx *)prev)->idle_sp = stacklevel; 1627 cctx_current->idle_sp = STACKLEVEL;
1326 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 */
1327 } 1629 }
1328 else if (expect_true (prev != next)) 1630 else if (ecb_expect_true (prev != next))
1329 { 1631 {
1330 coro_cctx *prev__cctx; 1632 coro_cctx *cctx_prev;
1331 1633
1332 if (expect_false (prev->flags & CF_NEW)) 1634 if (ecb_expect_false (prev->flags & CF_NEW))
1333 { 1635 {
1334 /* create a new empty/source context */ 1636 /* create a new empty/source context */
1335 prev->cctx = cctx_new_empty ();
1336 prev->flags &= ~CF_NEW; 1637 prev->flags &= ~CF_NEW;
1337 prev->flags |= CF_RUNNING; 1638 prev->flags |= CF_RUNNING;
1338 } 1639 }
1339 1640
1340 prev->flags &= ~CF_RUNNING; 1641 prev->flags &= ~CF_RUNNING;
1341 next->flags |= CF_RUNNING; 1642 next->flags |= CF_RUNNING;
1342 1643
1343 LOCK;
1344
1345 /* first get rid of the old state */ 1644 /* first get rid of the old state */
1346 save_perl (aTHX_ prev); 1645 save_perl (aTHX_ prev);
1347 1646
1348 if (expect_false (next->flags & CF_NEW)) 1647 if (ecb_expect_false (next->flags & CF_NEW))
1349 { 1648 {
1350 /* need to start coroutine */ 1649 /* need to start coroutine */
1351 next->flags &= ~CF_NEW; 1650 next->flags &= ~CF_NEW;
1352 /* setup coroutine call */ 1651 /* setup coroutine call */
1353 coro_setup (aTHX_ next); 1652 init_perl (aTHX_ next);
1354 } 1653 }
1355 else 1654 else
1356 load_perl (aTHX_ next); 1655 load_perl (aTHX_ next);
1357 1656
1358 prev__cctx = prev->cctx;
1359
1360 /* possibly untie and reuse the cctx */ 1657 /* possibly untie and reuse the cctx */
1361 if (expect_true ( 1658 if (ecb_expect_true (
1362 prev__cctx->idle_sp == stacklevel 1659 cctx_current->idle_sp == STACKLEVEL
1363 && !(prev__cctx->flags & CC_TRACE) 1660 && !(cctx_current->flags & CC_TRACE)
1364 && !force_cctx 1661 && !force_cctx
1365 )) 1662 ))
1366 { 1663 {
1367 /* 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 */
1368 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));
1369 1666
1370 prev->cctx = 0;
1371
1372 /* 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. */
1373 /* 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 */
1374 if (expect_false (CCTX_EXPIRED (prev__cctx))) 1669 if (ecb_expect_false (CCTX_EXPIRED (cctx_current)))
1375 if (!next->cctx) 1670 if (ecb_expect_true (!next->cctx))
1376 next->cctx = cctx_get (aTHX); 1671 next->cctx = cctx_get (aTHX);
1377 1672
1378 cctx_put (prev__cctx); 1673 cctx_put (cctx_current);
1379 } 1674 }
1675 else
1676 prev->cctx = cctx_current;
1380 1677
1381 ++next->usecount; 1678 ++next->usecount;
1382 1679
1383 if (expect_true (!next->cctx)) 1680 cctx_prev = cctx_current;
1384 next->cctx = cctx_get (aTHX); 1681 cctx_current = ecb_expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1385 1682
1386 assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); 1683 next->cctx = 0;
1387 transfer_next = next;
1388 1684
1389 if (expect_false (prev__cctx != next->cctx)) 1685 if (ecb_expect_false (cctx_prev != cctx_current))
1390 { 1686 {
1391 prev__cctx->top_env = PL_top_env; 1687 cctx_prev->top_env = PL_top_env;
1392 PL_top_env = next->cctx->top_env; 1688 PL_top_env = cctx_current->top_env;
1393 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1689 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1394 } 1690 }
1395 1691
1396 transfer_tail (aTHX); 1692 transfer_tail (aTHX);
1397 } 1693 }
1398} 1694}
… …
1400#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))
1401#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1697#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1402 1698
1403/** high level stuff ********************************************************/ 1699/** high level stuff ********************************************************/
1404 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 */
1405static int 1703static void
1704coro_call_on_destroy (pTHX_ struct coro *coro);
1705
1706static void
1406coro_state_destroy (pTHX_ struct coro *coro) 1707coro_state_destroy (pTHX_ struct coro *coro)
1407{ 1708{
1408 if (coro->flags & CF_DESTROYED) 1709 if (coro->flags & CF_ZOMBIE)
1409 return 0; 1710 return;
1410 1711
1712 slf_destroy (aTHX_ coro);
1713
1411 coro->flags |= CF_DESTROYED; 1714 coro->flags |= CF_ZOMBIE;
1412 1715
1413 if (coro->flags & CF_READY) 1716 if (coro->flags & CF_READY)
1414 { 1717 {
1415 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1718 /* reduce nready, as destroying a ready coro effectively unreadies it */
1416 /* alternative: look through all ready queues and remove the coro */ 1719 /* alternative: look through all ready queues and remove the coro */
1417 LOCK;
1418 --coro_nready; 1720 --coro_nready;
1419 UNLOCK;
1420 } 1721 }
1421 else 1722 else
1422 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 */
1423
1424 if (coro->mainstack && coro->mainstack != main_mainstack)
1425 {
1426 struct coro temp;
1427
1428 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1429
1430 save_perl (aTHX_ &temp);
1431 load_perl (aTHX_ coro);
1432
1433 coro_destruct (aTHX_ coro);
1434
1435 load_perl (aTHX_ &temp);
1436
1437 coro->slot = 0;
1438 }
1439
1440 cctx_destroy (coro->cctx);
1441 SvREFCNT_dec (coro->args);
1442 1724
1443 if (coro->next) coro->next->prev = coro->prev; 1725 if (coro->next) coro->next->prev = coro->prev;
1444 if (coro->prev) coro->prev->next = coro->next; 1726 if (coro->prev) coro->prev->next = coro->next;
1445 if (coro == coro_first) coro_first = coro->next; 1727 if (coro == coro_first) coro_first = coro->next;
1446 1728
1447 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 */
1448} 1744}
1449 1745
1450static int 1746static int
1451coro_state_free (pTHX_ SV *sv, MAGIC *mg) 1747coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1452{ 1748{
1453 struct coro *coro = (struct coro *)mg->mg_ptr; 1749 struct coro *coro = (struct coro *)mg->mg_ptr;
1454 mg->mg_ptr = 0; 1750 mg->mg_ptr = 0;
1455 1751
1456 coro->hv = 0;
1457
1458 if (--coro->refcnt < 0)
1459 {
1460 coro_state_destroy (aTHX_ coro); 1752 coro_state_destroy (aTHX_ coro);
1753 SvREFCNT_dec (coro->on_destroy);
1754 SvREFCNT_dec (coro->status);
1755
1461 Safefree (coro); 1756 Safefree (coro);
1462 }
1463 1757
1464 return 0; 1758 return 0;
1465} 1759}
1466 1760
1467static int 1761static int ecb_cold
1468coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) 1762coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1469{ 1763{
1470 struct coro *coro = (struct coro *)mg->mg_ptr; 1764 /* called when perl clones the current process the slow way (windows process emulation) */
1471 1765 /* WE SIMply nuke the pointers in the copy, causing perl to croak */
1472 ++coro->refcnt; 1766 mg->mg_ptr = 0;
1767 mg->mg_virtual = 0;
1473 1768
1474 return 0; 1769 return 0;
1475} 1770}
1476 1771
1477static MGVTBL coro_state_vtbl = { 1772static MGVTBL coro_state_vtbl = {
… …
1502 TRANSFER (ta, 1); 1797 TRANSFER (ta, 1);
1503} 1798}
1504 1799
1505/** Coro ********************************************************************/ 1800/** Coro ********************************************************************/
1506 1801
1507static void 1802ecb_inline void
1508coro_enq (pTHX_ SV *coro_sv) 1803coro_enq (pTHX_ struct coro *coro)
1509{ 1804{
1510 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1805 struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1511}
1512 1806
1513static 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 *
1514coro_deq (pTHX) 1815coro_deq (pTHX)
1515{ 1816{
1516 int prio; 1817 int prio;
1517 1818
1518 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1819 for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1519 if (AvFILLp (coro_ready [prio]) >= 0) 1820 {
1520 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 }
1521 1830
1522 return 0; 1831 return 0;
1832}
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;
1523} 1849}
1524 1850
1525static int 1851static int
1526api_ready (pTHX_ SV *coro_sv) 1852api_ready (pTHX_ SV *coro_sv)
1527{ 1853{
1528 struct coro *coro;
1529 SV *sv_hook;
1530 void (*xs_hook)(void);
1531
1532 if (SvROK (coro_sv))
1533 coro_sv = SvRV (coro_sv);
1534
1535 coro = SvSTATE (coro_sv); 1854 struct coro *coro = SvSTATE (coro_sv);
1536 1855
1537 if (coro->flags & CF_READY) 1856 if (coro->flags & CF_READY)
1538 return 0; 1857 return 0;
1539 1858
1540 coro->flags |= CF_READY; 1859 coro->flags |= CF_READY;
1541 1860
1542 LOCK; 1861 coro_enq (aTHX_ coro);
1543 1862
1544 sv_hook = coro_nready ? 0 : coro_readyhook; 1863 if (!coro_nready++)
1545 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1864 if (coroapi.readyhook)
1546 1865 coroapi.readyhook ();
1547 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1548 ++coro_nready;
1549
1550 UNLOCK;
1551
1552 if (sv_hook)
1553 {
1554 dSP;
1555
1556 ENTER;
1557 SAVETMPS;
1558
1559 PUSHMARK (SP);
1560 PUTBACK;
1561 call_sv (sv_hook, G_DISCARD);
1562 SPAGAIN;
1563
1564 FREETMPS;
1565 LEAVE;
1566 }
1567
1568 if (xs_hook)
1569 xs_hook ();
1570 1866
1571 return 1; 1867 return 1;
1572} 1868}
1573 1869
1574static int 1870static int
1575api_is_ready (pTHX_ SV *coro_sv) 1871api_is_ready (pTHX_ SV *coro_sv)
1576{ 1872{
1577 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1873 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1578} 1874}
1579 1875
1580INLINE void 1876/* expects to own a reference to next->hv */
1877ecb_inline void
1581prepare_schedule (pTHX_ struct coro_transfer_args *ta) 1878prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1582{ 1879{
1583 SV *prev_sv, *next_sv;
1584
1585 for (;;)
1586 {
1587 LOCK;
1588 next_sv = coro_deq (aTHX);
1589
1590 /* nothing to schedule: call the idle handler */
1591 if (expect_false (!next_sv))
1592 {
1593 dSP;
1594 UNLOCK;
1595
1596 ENTER;
1597 SAVETMPS;
1598
1599 PUSHMARK (SP);
1600 PUTBACK;
1601 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1602 SPAGAIN;
1603
1604 FREETMPS;
1605 LEAVE;
1606 continue;
1607 }
1608
1609 ta->next = SvSTATE (next_sv);
1610
1611 /* cannot transfer to destroyed coros, skip and look for next */
1612 if (expect_false (ta->next->flags & CF_DESTROYED))
1613 {
1614 UNLOCK;
1615 SvREFCNT_dec (next_sv);
1616 /* coro_nready has already been taken care of by destroy */
1617 continue;
1618 }
1619
1620 --coro_nready;
1621 UNLOCK;
1622 break;
1623 }
1624
1625 /* free this only after the transfer */
1626 prev_sv = SvRV (coro_current); 1880 SV *prev_sv = SvRV (coro_current);
1881
1627 ta->prev = SvSTATE (prev_sv); 1882 ta->prev = SvSTATE_hv (prev_sv);
1883 ta->next = next;
1884
1628 TRANSFER_CHECK (*ta); 1885 TRANSFER_CHECK (*ta);
1629 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); 1886
1630 ta->next->flags &= ~CF_READY;
1631 SvRV_set (coro_current, next_sv); 1887 SvRV_set (coro_current, (SV *)next->hv);
1632 1888
1633 LOCK;
1634 free_coro_mortal (aTHX); 1889 free_coro_mortal (aTHX);
1635 coro_mortal = prev_sv; 1890 coro_mortal = prev_sv;
1636 UNLOCK;
1637} 1891}
1638 1892
1639INLINE 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
1640prepare_cede (pTHX_ struct coro_transfer_args *ta) 1947prepare_cede (pTHX_ struct coro_transfer_args *ta)
1641{ 1948{
1642 api_ready (aTHX_ coro_current); 1949 api_ready (aTHX_ coro_current);
1643 prepare_schedule (aTHX_ ta); 1950 prepare_schedule (aTHX_ ta);
1644} 1951}
1645 1952
1646INLINE void 1953ecb_inline void
1647prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) 1954prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1648{ 1955{
1649 SV *prev = SvRV (coro_current); 1956 SV *prev = SvRV (coro_current);
1650 1957
1651 if (coro_nready) 1958 if (coro_nready)
… …
1664 1971
1665 prepare_schedule (aTHX_ &ta); 1972 prepare_schedule (aTHX_ &ta);
1666 TRANSFER (ta, 1); 1973 TRANSFER (ta, 1);
1667} 1974}
1668 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
1669static int 1986static int
1670api_cede (pTHX) 1987api_cede (pTHX)
1671{ 1988{
1672 struct coro_transfer_args ta; 1989 struct coro_transfer_args ta;
1673 1990
1674 prepare_cede (aTHX_ &ta); 1991 prepare_cede (aTHX_ &ta);
1675 1992
1676 if (expect_true (ta.prev != ta.next)) 1993 if (ecb_expect_true (ta.prev != ta.next))
1677 { 1994 {
1678 TRANSFER (ta, 1); 1995 TRANSFER (ta, 1);
1679 return 1; 1996 return 1;
1680 } 1997 }
1681 else 1998 else
… …
1700static void 2017static void
1701api_trace (pTHX_ SV *coro_sv, int flags) 2018api_trace (pTHX_ SV *coro_sv, int flags)
1702{ 2019{
1703 struct coro *coro = SvSTATE (coro_sv); 2020 struct coro *coro = SvSTATE (coro_sv);
1704 2021
2022 if (coro->flags & CF_RUNNING)
2023 croak ("cannot enable tracing on a running coroutine, caught");
2024
1705 if (flags & CC_TRACE) 2025 if (flags & CC_TRACE)
1706 { 2026 {
1707 if (!coro->cctx) 2027 if (!coro->cctx)
1708 coro->cctx = cctx_new_run (); 2028 coro->cctx = cctx_new_run ();
1709 else if (!(coro->cctx->flags & CC_TRACE)) 2029 else if (!(coro->cctx->flags & CC_TRACE))
1710 croak ("cannot enable tracing on coroutine with custom stack,"); 2030 croak ("cannot enable tracing on coroutine with custom stack, caught");
1711 2031
1712 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 2032 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1713 } 2033 }
1714 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 2034 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1715 { 2035 {
… …
1720 else 2040 else
1721 coro->slot->runops = RUNOPS_DEFAULT; 2041 coro->slot->runops = RUNOPS_DEFAULT;
1722 } 2042 }
1723} 2043}
1724 2044
1725#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
1726static int 2082static int
1727coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 2083slf_check_join (pTHX_ struct CoroSLF *frame)
1728{ 2084{
1729 AV *padlist; 2085 struct coro *coro = (struct coro *)frame->data;
1730 AV *av = (AV *)mg->mg_obj;
1731 2086
1732 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);
1733 2095
1734 return 0; 2096 return 0;
1735} 2097}
1736 2098
1737static MGVTBL coro_gensub_vtbl = { 2099static void
1738 0, 0, 0, 0, 2100slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1739 coro_gensub_free 2101{
1740}; 2102 struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
1741#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}
1742 2790
1743/*****************************************************************************/ 2791/*****************************************************************************/
1744/* PerlIO::cede */ 2792/* PerlIO::cede */
1745 2793
1746typedef struct 2794typedef struct
1747{ 2795{
1748 PerlIOBuf base; 2796 PerlIOBuf base;
1749 NV next, every; 2797 NV next, every;
1750} PerlIOCede; 2798} PerlIOCede;
1751 2799
1752static IV 2800static IV ecb_cold
1753PerlIOCede_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)
1754{ 2802{
1755 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2803 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1756 2804
1757 self->every = SvCUR (arg) ? SvNV (arg) : 0.01; 2805 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
1758 self->next = nvtime () + self->every; 2806 self->next = nvtime () + self->every;
1759 2807
1760 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); 2808 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
1761} 2809}
1762 2810
1763static SV * 2811static SV * ecb_cold
1764PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) 2812PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
1765{ 2813{
1766 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2814 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1767 2815
1768 return newSVnv (self->every); 2816 return newSVnv (self->every);
… …
1814 PerlIOBuf_get_cnt, 2862 PerlIOBuf_get_cnt,
1815 PerlIOBuf_set_ptrcnt, 2863 PerlIOBuf_set_ptrcnt,
1816}; 2864};
1817 2865
1818/*****************************************************************************/ 2866/*****************************************************************************/
2867/* Coro::Semaphore & Coro::Signal */
1819 2868
1820static const CV *slf_cv; /* for quick consistency check */
1821
1822static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1823static SV *slf_arg0;
1824static SV *slf_arg1;
1825static SV *slf_arg2;
1826
1827/* this restores the stack in the case we patched the entersub, to */
1828/* recreate the stack frame as perl will on following calls */
1829/* since entersub cleared the stack */
1830static OP * 2869static SV *
1831pp_restore (pTHX) 2870coro_waitarray_new (pTHX_ int count)
1832{ 2871{
1833 dSP; 2872 /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2873 AV *av = newAV ();
2874 SV **ary;
1834 2875
1835 PUSHMARK (SP); 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);
1836 2889
1837 EXTEND (SP, 3); 2890 return newRV_noinc ((SV *)av);
1838 if (slf_arg0) PUSHs (sv_2mortal (slf_arg0));
1839 if (slf_arg1) PUSHs (sv_2mortal (slf_arg1));
1840 if (slf_arg2) PUSHs (sv_2mortal (slf_arg2));
1841 PUSHs ((SV *)CvGV (slf_cv));
1842
1843 RETURNOP (slf_restore.op_first);
1844} 2891}
1845 2892
1846static void 2893/* semaphore */
1847slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1848{
1849 prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data);
1850}
1851 2894
1852static void 2895static void
1853slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2896coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
1854{ 2897{
1855 assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); 2898 SV *count_sv = AvARRAY (av)[0];
2899 IV count = SvIVX (count_sv);
1856 2900
1857 frame->prepare = slf_prepare_set_stacklevel; 2901 count += adjust;
1858 frame->check = slf_check_nop; 2902 SvIVX (count_sv) = count;
1859 frame->data = (void *)SvIV (arg [0]);
1860}
1861 2903
1862static void 2904 /* now wake up as many waiters as are expected to lock */
1863slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) 2905 while (count > 0 && AvFILLp (av) > 0)
1864{
1865 SV **arg = (SV **)slf_frame.data;
1866
1867 prepare_transfer (ta, arg [0], arg [1]);
1868}
1869
1870static void
1871slf_init_transfer (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1872{
1873 if (items != 2)
1874 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1875
1876 frame->prepare = slf_prepare_transfer;
1877 frame->check = slf_check_nop;
1878 frame->data = (void *)arg; /* let's hope it will stay valid */
1879}
1880
1881static void
1882slf_init_schedule (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1883{
1884 frame->prepare = prepare_schedule;
1885 frame->check = slf_check_nop;
1886}
1887
1888static void
1889slf_init_cede (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1890{
1891 frame->prepare = prepare_cede;
1892 frame->check = slf_check_nop;
1893}
1894
1895static void
1896slf_init_cede_notself (pTHX_ struct CoroSLF *frame, SV **arg, int items)
1897{
1898 frame->prepare = prepare_cede_notself;
1899 frame->check = slf_check_nop;
1900}
1901
1902/* we hijack an hopefully unused CV flag for our purposes */
1903#define CVf_SLF 0x4000
1904
1905/*
1906 * these not obviously related functions are all rolled into one
1907 * function to increase chances that they all will call transfer with the same
1908 * stack offset
1909 * SLF stands for "schedule-like-function".
1910 */
1911static OP *
1912pp_slf (pTHX)
1913{
1914 I32 checkmark; /* mark SP to see how many elements check has pushed */
1915
1916 /* set up the slf frame, unless it has already been set-up */
1917 /* the latter happens when a new coro has been started */
1918 /* or when a new cctx was attached to an existing coroutine */
1919 if (expect_true (!slf_frame.prepare))
1920 { 2906 {
1921 /* first iteration */ 2907 SV *cb;
1922 dSP;
1923 SV **arg = PL_stack_base + TOPMARK + 1;
1924 int items = SP - arg; /* args without function object */
1925 SV *gv = *sp;
1926 2908
1927 /* do a quick consistency check on the "function" object, and if it isn't */ 2909 /* swap first two elements so we can shift a waiter */
1928 /* for us, divert to the real entersub */ 2910 AvARRAY (av)[0] = AvARRAY (av)[1];
1929 if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) 2911 AvARRAY (av)[1] = count_sv;
1930 return PL_ppaddr[OP_ENTERSUB](aTHX); 2912 cb = av_shift (av);
1931 2913
1932 /* pop args */ 2914 if (SvOBJECT (cb))
1933 SP = PL_stack_base + POPMARK;
1934
1935 if (!(PL_op->op_flags & OPf_STACKED))
1936 { 2915 {
1937 /* ampersand-form of call, use @_ instead of stack */ 2916 api_ready (aTHX_ cb);
1938 AV *av = GvAV (PL_defgv); 2917 --count;
1939 arg = AvARRAY (av);
1940 items = AvFILLp (av) + 1;
1941 } 2918 }
1942 2919 else if (SvTYPE (cb) == SVt_PVCV)
1943 PUTBACK;
1944
1945 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) (aTHX_ &slf_frame, arg, items);
1946 }
1947
1948 /* now interpret the slf_frame */
1949 /* we use a callback system not to make the code needlessly */
1950 /* complicated, but so we can run multiple perl coros from one cctx */
1951
1952 do
1953 {
1954 struct coro_transfer_args ta;
1955
1956 slf_frame.prepare (aTHX_ &ta);
1957 TRANSFER (ta, 0);
1958
1959 checkmark = PL_stack_sp - PL_stack_base;
1960 }
1961 while (slf_frame.check (aTHX_ &slf_frame));
1962
1963 {
1964 dSP;
1965 SV **bot = PL_stack_base + checkmark;
1966 int gimme = GIMME_V;
1967
1968 slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */
1969
1970 /* make sure we put something on the stack in scalar context */
1971 if (gimme == G_SCALAR)
1972 { 2920 {
1973 if (sp == bot) 2921 dSP;
1974 XPUSHs (&PL_sv_undef); 2922 PUSHMARK (SP);
1975 2923 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
1976 SP = bot + 1; 2924 PUTBACK;
2925 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
1977 } 2926 }
1978 2927
1979 PUTBACK; 2928 SvREFCNT_dec (cb);
1980 } 2929 }
1981
1982 return NORMAL;
1983} 2930}
1984 2931
1985static void 2932static void
1986api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) 2933coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
1987{ 2934{
1988 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); 2935 /* call $sem->adjust (0) to possibly wake up some other waiters */
1989 2936 coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
1990 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
1991 && PL_op->op_ppaddr != pp_slf)
1992 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
1993
1994 if (items > 3)
1995 croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items);
1996
1997 CvFLAGS (cv) |= CVf_SLF;
1998 CvXSUBANY (cv).any_ptr = (void *)init_cb;
1999 slf_cv = cv;
2000
2001 /* we patch the op, and then re-run the whole call */
2002 /* we have to put the same argument on the stack for this to work */
2003 /* and this will be done by pp_restore */
2004 slf_restore.op_next = (OP *)&slf_restore;
2005 slf_restore.op_type = OP_NULL;
2006 slf_restore.op_ppaddr = pp_restore;
2007 slf_restore.op_first = PL_op;
2008
2009 slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0;
2010 slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0;
2011 slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0;
2012
2013 PL_op->op_ppaddr = pp_slf;
2014
2015 PL_op = (OP *)&slf_restore;
2016} 2937}
2017
2018/*****************************************************************************/
2019 2938
2020static int 2939static int
2021slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) 2940slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2022{ 2941{
2023 AV *av = (AV *)frame->data; 2942 AV *av = (AV *)frame->data;
2024 SV *count_sv = AvARRAY (av)[0]; 2943 SV *count_sv = AvARRAY (av)[0];
2944 SV *coro_hv = SvRV (coro_current);
2025 2945
2946 /* if we are about to throw, don't actually acquire the lock, just throw */
2947 if (CORO_THROW)
2948 return 0;
2026 if (SvIVX (count_sv) > 0) 2949 else if (SvIVX (count_sv) > 0)
2027 { 2950 {
2951 frame->destroy = 0;
2952
2953 if (acquire)
2028 SvIVX (count_sv) = SvIVX (count_sv) - 1; 2954 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2955 else
2956 coro_semaphore_adjust (aTHX_ av, 0);
2957
2029 return 0; 2958 return 0;
2030 } 2959 }
2031 else 2960 else
2032 { 2961 {
2033 int i; 2962 int i;
2034 /* if we were woken up but can't down, we look through the whole */ 2963 /* if we were woken up but can't down, we look through the whole */
2035 /* waiters list and only add us if we aren't in there already */ 2964 /* waiters list and only add us if we aren't in there already */
2036 /* this avoids some degenerate memory usage cases */ 2965 /* this avoids some degenerate memory usage cases */
2037 2966 for (i = AvFILLp (av); i > 0; --i) /* i > 0 is not an off-by-one bug */
2038 for (i = 1; i <= AvFILLp (av); ++i)
2039 if (AvARRAY (av)[i] == SvRV (coro_current)) 2967 if (AvARRAY (av)[i] == coro_hv)
2040 return 1; 2968 return 1;
2041 2969
2042 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2970 av_push (av, SvREFCNT_inc (coro_hv));
2043 return 1; 2971 return 1;
2044 } 2972 }
2045} 2973}
2046 2974
2047static void 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
2048slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, SV **arg, int items) 2988slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2049{ 2989{
2050 AV *av = (AV *)SvRV (arg [0]); 2990 AV *av = (AV *)SvRV (arg [0]);
2051 2991
2052 if (SvIVX (AvARRAY (av)[0]) > 0) 2992 if (SvIVX (AvARRAY (av)[0]) > 0)
2053 { 2993 {
… …
2058 { 2998 {
2059 av_push (av, SvREFCNT_inc (SvRV (coro_current))); 2999 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2060 3000
2061 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); 3001 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2062 frame->prepare = prepare_schedule; 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;
2063 } 3006 }
3007}
2064 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);
2065 frame->check = slf_check_semaphore_down; 3013 frame->check = slf_check_semaphore_down;
2066
2067} 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)
3357{
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);
3382
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;
3388
3389 save = POPs; save_ptr = SvPVbyte (save, save_len);
3390 load = POPs; load_ptr = SvPVbyte (load, load_len);
3391
3392 map_len = load_len + save_len + 16;
3393
3394 map_base = mmap (0, map_len, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
3395
3396 assert (("Coro: unable to mmap jit code page, cannot continue.", map_base != (char *)MAP_FAILED));
3397
3398 load_perl_slots = (load_save_perl_slots_type)map_base;
3399 memcpy (map_base, load_ptr, load_len);
3400
3401 map_base += (load_len + 15) & ~15;
3402
3403 save_perl_slots = (load_save_perl_slots_type)map_base;
3404 memcpy (map_base, save_ptr, save_len);
3405
3406 /* we are good citizens and try to make the page read-only, so the evil evil */
3407 /* hackers might have it a bit more difficult */
3408 mprotect (map_base, map_len, PROT_READ | PROT_EXEC);
3409
3410 PUTBACK;
3411 eval_pv ("undef &Coro::State::_jit", 1);
3412}
3413
3414#endif
2068 3415
2069MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 3416MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2070 3417
2071PROTOTYPES: DISABLE 3418PROTOTYPES: DISABLE
2072 3419
2073BOOT: 3420BOOT:
2074{ 3421{
2075#ifdef USE_ITHREADS 3422#ifdef USE_ITHREADS
2076 MUTEX_INIT (&coro_lock);
2077# if CORO_PTHREAD 3423# if CORO_PTHREAD
2078 coro_thx = PERL_GET_CONTEXT; 3424 coro_thx = PERL_GET_CONTEXT;
2079# endif 3425# endif
2080#endif 3426#endif
2081 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;
3433
3434 cctx_current = cctx_new_empty ();
2082 3435
2083 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 3436 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2084 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 3437 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2085 3438
2086 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;
… …
2101 main_mainstack = PL_mainstack; 3454 main_mainstack = PL_mainstack;
2102 main_top_env = PL_top_env; 3455 main_top_env = PL_top_env;
2103 3456
2104 while (main_top_env->je_prev) 3457 while (main_top_env->je_prev)
2105 main_top_env = main_top_env->je_prev; 3458 main_top_env = main_top_env->je_prev;
3459
3460 {
3461 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
3462
3463 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
3464 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
3465
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);
3468 }
2106 3469
2107 coroapi.ver = CORO_API_VERSION; 3470 coroapi.ver = CORO_API_VERSION;
2108 coroapi.rev = CORO_API_REVISION; 3471 coroapi.rev = CORO_API_REVISION;
2109 3472
2110 coroapi.transfer = api_transfer; 3473 coroapi.transfer = api_transfer;
… …
2114 coroapi.prepare_nop = prepare_nop; 3477 coroapi.prepare_nop = prepare_nop;
2115 coroapi.prepare_schedule = prepare_schedule; 3478 coroapi.prepare_schedule = prepare_schedule;
2116 coroapi.prepare_cede = prepare_cede; 3479 coroapi.prepare_cede = prepare_cede;
2117 coroapi.prepare_cede_notself = prepare_cede_notself; 3480 coroapi.prepare_cede_notself = prepare_cede_notself;
2118 3481
2119 { 3482 time_init (aTHX);
2120 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2121 3483
2122 if (!svp) croak ("Time::HiRes is required");
2123 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2124
2125 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2126 }
2127
2128 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
2129} 3490}
2130 3491
2131SV * 3492SV *
2132new (char *klass, ...) 3493new (SV *klass, ...)
3494 ALIAS:
3495 Coro::new = 1
2133 CODE: 3496 CODE:
2134{ 3497 RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2135 struct coro *coro; 3498 OUTPUT:
2136 MAGIC *mg;
2137 HV *hv;
2138 int i;
2139
2140 Newz (0, coro, 1, struct coro);
2141 coro->args = newAV ();
2142 coro->flags = CF_NEW;
2143
2144 if (coro_first) coro_first->prev = coro;
2145 coro->next = coro_first;
2146 coro_first = coro;
2147
2148 coro->hv = hv = newHV ();
2149 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2150 mg->mg_flags |= MGf_DUP;
2151 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2152
2153 av_extend (coro->args, items - 1);
2154 for (i = 1; i < items; i++)
2155 av_push (coro->args, newSVsv (ST (i)));
2156}
2157 OUTPUT:
2158 RETVAL 3499 RETVAL
2159
2160void
2161_set_stacklevel (...)
2162 CODE:
2163 api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items);
2164 3500
2165void 3501void
2166transfer (...) 3502transfer (...)
2167 PROTOTYPE: $$ 3503 PROTOTYPE: $$
2168 CODE: 3504 CODE:
2169 api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); 3505 CORO_EXECUTE_SLF_XS (slf_init_transfer);
2170 3506
2171bool 3507SV *
2172_destroy (SV *coro_sv) 3508clone (Coro::State coro)
2173 CODE: 3509 CODE:
2174 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 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}
2175 OUTPUT: 3523 OUTPUT:
2176 RETVAL 3524 RETVAL
2177
2178void
2179_exit (int code)
2180 PROTOTYPE: $
2181 CODE:
2182 _exit (code);
2183 3525
2184int 3526int
2185cctx_stacksize (int new_stacksize = 0) 3527cctx_stacksize (int new_stacksize = 0)
2186 PROTOTYPE: ;$ 3528 PROTOTYPE: ;$
2187 CODE: 3529 CODE:
… …
2223void 3565void
2224list () 3566list ()
2225 PROTOTYPE: 3567 PROTOTYPE:
2226 PPCODE: 3568 PPCODE:
2227{ 3569{
2228 struct coro *coro; 3570 struct coro *coro;
2229 for (coro = coro_first; coro; coro = coro->next) 3571 for (coro = coro_first; coro; coro = coro->next)
2230 if (coro->hv) 3572 if (coro->hv)
2231 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); 3573 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2232} 3574}
2233 3575
… …
2237 eval = 1 3579 eval = 1
2238 CODE: 3580 CODE:
2239{ 3581{
2240 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) 3582 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2241 { 3583 {
2242 struct coro temp; 3584 struct coro *current = SvSTATE_current;
3585 struct CoroSLF slf_save;
2243 3586
2244 if (!(coro->flags & CF_RUNNING)) 3587 if (current != coro)
2245 { 3588 {
2246 PUTBACK; 3589 PUTBACK;
2247 save_perl (aTHX_ &temp); 3590 save_perl (aTHX_ current);
2248 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;
2249 } 3602 }
2250 3603
2251 {
2252 dSP;
2253 ENTER;
2254 SAVETMPS;
2255 PUTBACK;
2256 PUSHSTACK; 3604 PUSHSTACK;
3605
2257 PUSHMARK (SP); 3606 PUSHMARK (SP);
3607 PUTBACK;
2258 3608
2259 if (ix) 3609 if (ix)
2260 eval_sv (coderef, 0); 3610 eval_sv (coderef, 0);
2261 else 3611 else
2262 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); 3612 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2263 3613
2264 POPSTACK; 3614 POPSTACK;
2265 SPAGAIN; 3615 SPAGAIN;
2266 FREETMPS;
2267 LEAVE;
2268 PUTBACK;
2269 }
2270 3616
2271 if (!(coro->flags & CF_RUNNING)) 3617 if (current != coro)
2272 { 3618 {
3619 PUTBACK;
3620 slf_frame = slf_save;
2273 save_perl (aTHX_ coro); 3621 save_perl (aTHX_ coro);
2274 load_perl (aTHX_ &temp); 3622 load_perl (aTHX_ current);
2275 SPAGAIN; 3623 SPAGAIN;
2276 } 3624 }
2277 } 3625 }
2278} 3626}
2279 3627
… …
2282 PROTOTYPE: $ 3630 PROTOTYPE: $
2283 ALIAS: 3631 ALIAS:
2284 is_ready = CF_READY 3632 is_ready = CF_READY
2285 is_running = CF_RUNNING 3633 is_running = CF_RUNNING
2286 is_new = CF_NEW 3634 is_new = CF_NEW
2287 is_destroyed = CF_DESTROYED 3635 is_destroyed = CF_ZOMBIE
3636 is_zombie = CF_ZOMBIE
3637 is_suspended = CF_SUSPENDED
2288 CODE: 3638 CODE:
2289 RETVAL = boolSV (coro->flags & ix); 3639 RETVAL = boolSV (coro->flags & ix);
2290 OUTPUT: 3640 OUTPUT:
2291 RETVAL 3641 RETVAL
2292 3642
2293void 3643void
2294throw (Coro::State self, SV *throw = &PL_sv_undef) 3644throw (SV *self, SV *exception = &PL_sv_undef)
2295 PROTOTYPE: $;$ 3645 PROTOTYPE: $;$
2296 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;
2297 SvREFCNT_dec (self->throw); 3651 SvREFCNT_dec (*exceptionp);
2298 self->throw = SvOK (throw) ? newSVsv (throw) : 0; 3652 SvGETMAGIC (exception);
3653 *exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3654
3655 api_ready (aTHX_ self);
3656}
2299 3657
2300void 3658void
2301api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 3659api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2302 PROTOTYPE: $;$ 3660 PROTOTYPE: $;$
2303 C_ARGS: aTHX_ coro, flags 3661 C_ARGS: aTHX_ coro, flags
2304 3662
2305SV * 3663SV *
2306has_cctx (Coro::State coro) 3664has_cctx (Coro::State coro)
2307 PROTOTYPE: $ 3665 PROTOTYPE: $
2308 CODE: 3666 CODE:
2309 RETVAL = boolSV (!!coro->cctx); 3667 /* maybe manage the running flag differently */
3668 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2310 OUTPUT: 3669 OUTPUT:
2311 RETVAL 3670 RETVAL
2312 3671
2313int 3672int
2314is_traced (Coro::State coro) 3673is_traced (Coro::State coro)
… …
2334 3693
2335void 3694void
2336force_cctx () 3695force_cctx ()
2337 PROTOTYPE: 3696 PROTOTYPE:
2338 CODE: 3697 CODE:
2339 struct coro *coro = SvSTATE (coro_current);
2340 coro->cctx->idle_sp = 0; 3698 cctx_current->idle_sp = 0;
2341 3699
2342void 3700void
2343swap_defsv (Coro::State self) 3701swap_defsv (Coro::State self)
2344 PROTOTYPE: $ 3702 PROTOTYPE: $
2345 ALIAS: 3703 ALIAS:
… …
2353 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 3711 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2354 3712
2355 SV *tmp = *src; *src = *dst; *dst = tmp; 3713 SV *tmp = *src; *src = *dst; *dst = tmp;
2356 } 3714 }
2357 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
2358MODULE = Coro::State PACKAGE = Coro 3778MODULE = Coro::State PACKAGE = Coro
2359 3779
2360BOOT: 3780BOOT:
2361{ 3781{
2362 int i;
2363
2364 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2365 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); 3782 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2366 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); 3783 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2367 3784 cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2368 coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); 3785 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2369 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 */
2370 3795
2371 coro_stash = gv_stashpv ("Coro", TRUE); 3796 coro_stash = gv_stashpv ("Coro", TRUE);
2372 3797
2373 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3798 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2374 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3799 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2375 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3800 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2376 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3801 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2377 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3802 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2378 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3803 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2379
2380 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2381 coro_ready[i] = newAV ();
2382 3804
2383 { 3805 {
2384 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); 3806 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2385 3807
2386 coroapi.schedule = api_schedule; 3808 coroapi.schedule = api_schedule;
3809 coroapi.schedule_to = api_schedule_to;
2387 coroapi.cede = api_cede; 3810 coroapi.cede = api_cede;
2388 coroapi.cede_notself = api_cede_notself; 3811 coroapi.cede_notself = api_cede_notself;
2389 coroapi.ready = api_ready; 3812 coroapi.ready = api_ready;
2390 coroapi.is_ready = api_is_ready; 3813 coroapi.is_ready = api_is_ready;
2391 coroapi.nready = coro_nready; 3814 coroapi.nready = coro_nready;
2392 coroapi.current = coro_current; 3815 coroapi.current = coro_current;
2393 3816
2394 GCoroAPI = &coroapi; 3817 /*GCoroAPI = &coroapi;*/
2395 sv_setiv (sv, (IV)&coroapi); 3818 sv_setiv (sv, (IV)&coroapi);
2396 SvREADONLY_on (sv); 3819 SvREADONLY_on (sv);
2397 } 3820 }
2398} 3821}
2399 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
2400void 3862void
2401schedule (...) 3863schedule (...)
2402 CODE: 3864 CODE:
2403 api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); 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);
2404 3876
2405void 3877void
2406cede (...) 3878cede (...)
2407 CODE: 3879 CODE:
2408 api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); 3880 CORO_EXECUTE_SLF_XS (slf_init_cede);
2409 3881
2410void 3882void
2411cede_notself (...) 3883cede_notself (...)
2412 CODE: 3884 CODE:
2413 api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); 3885 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2414 3886
2415void 3887void
2416_set_current (SV *current) 3888_set_current (SV *current)
2417 PROTOTYPE: $ 3889 PROTOTYPE: $
2418 CODE: 3890 CODE:
… …
2421 3893
2422void 3894void
2423_set_readyhook (SV *hook) 3895_set_readyhook (SV *hook)
2424 PROTOTYPE: $ 3896 PROTOTYPE: $
2425 CODE: 3897 CODE:
2426 LOCK;
2427 SvREFCNT_dec (coro_readyhook); 3898 SvREFCNT_dec (coro_readyhook);
3899 SvGETMAGIC (hook);
3900 if (SvOK (hook))
3901 {
2428 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 3902 coro_readyhook = newSVsv (hook);
2429 UNLOCK; 3903 CORO_READYHOOK = invoke_sv_ready_hook_helper;
3904 }
3905 else
3906 {
3907 coro_readyhook = 0;
3908 CORO_READYHOOK = 0;
3909 }
2430 3910
2431int 3911int
2432prio (Coro::State coro, int newprio = 0) 3912prio (Coro::State coro, int newprio = 0)
2433 PROTOTYPE: $;$ 3913 PROTOTYPE: $;$
2434 ALIAS: 3914 ALIAS:
… …
2440 if (items > 1) 3920 if (items > 1)
2441 { 3921 {
2442 if (ix) 3922 if (ix)
2443 newprio = coro->prio - newprio; 3923 newprio = coro->prio - newprio;
2444 3924
2445 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 3925 if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
2446 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 3926 if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
2447 3927
2448 coro->prio = newprio; 3928 coro->prio = newprio;
2449 } 3929 }
2450} 3930}
2451 OUTPUT: 3931 OUTPUT:
… …
2465 CODE: 3945 CODE:
2466 RETVAL = coro_nready; 3946 RETVAL = coro_nready;
2467 OUTPUT: 3947 OUTPUT:
2468 RETVAL 3948 RETVAL
2469 3949
2470# for async_pool speedup
2471void 3950void
2472_pool_1 (SV *cb) 3951suspend (Coro::State self)
3952 PROTOTYPE: $
2473 CODE: 3953 CODE:
2474{ 3954 self->flags |= CF_SUSPENDED;
2475 struct coro *coro = SvSTATE (coro_current);
2476 HV *hv = (HV *)SvRV (coro_current);
2477 AV *defav = GvAV (PL_defgv);
2478 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2479 AV *invoke_av;
2480 int i, len;
2481 3955
2482 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)
2483 { 3982 {
2484 SV *old = PL_diehook; 3983 SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
2485 PL_diehook = 0; 3984 hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
2486 SvREFCNT_dec (old); 3985 SvREFCNT_dec (sv);
2487 croak ("\3async_pool terminate\2\n");
2488 } 3986 }
2489 3987
2490 SvREFCNT_dec (coro->saved_deffh);
2491 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
2492
2493 hv_store (hv, "desc", sizeof ("desc") - 1,
2494 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
2495
2496 invoke_av = (AV *)SvRV (invoke);
2497 len = av_len (invoke_av);
2498
2499 sv_setsv (cb, AvARRAY (invoke_av)[0]);
2500
2501 if (len > 0)
2502 { 3988 {
2503 av_fill (defav, len - 1); 3989 struct coro *coro = SvSTATE_hv (hv);
2504 for (i = 0; i < len; ++i) 3990
2505 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;
2506 } 3995 }
2507}
2508 3996
2509void 3997 api_ready (aTHX_ (SV *)hv);
2510_pool_2 (SV *cb) 3998
3999 if (GIMME_V != G_VOID)
4000 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
4001 else
4002 SvREFCNT_dec (hv);
4003}
4004
4005SV *
4006rouse_cb ()
4007 PROTOTYPE:
2511 CODE: 4008 CODE:
2512{ 4009 RETVAL = coro_new_rouse_cb (aTHX);
2513 struct coro *coro = SvSTATE (coro_current);
2514
2515 sv_setsv (cb, &PL_sv_undef);
2516
2517 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2518 coro->saved_deffh = 0;
2519
2520 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2521 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2522 {
2523 SV *old = PL_diehook;
2524 PL_diehook = 0;
2525 SvREFCNT_dec (old);
2526 croak ("\3async_pool terminate\2\n");
2527 }
2528
2529 av_clear (GvAV (PL_defgv));
2530 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
2531 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2532
2533 coro->prio = 0;
2534
2535 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2536 api_trace (aTHX_ coro_current, 0);
2537
2538 av_push (av_async_pool, newSVsv (coro_current));
2539}
2540
2541#if 0
2542
2543void
2544_generator_call (...)
2545 PROTOTYPE: @
2546 PPCODE:
2547 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2548 xxxx
2549 abort ();
2550
2551SV *
2552gensub (SV *sub, ...)
2553 PROTOTYPE: &;@
2554 CODE:
2555{
2556 struct coro *coro;
2557 MAGIC *mg;
2558 CV *xcv;
2559 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2560 int i;
2561
2562 CvGV (ncv) = CvGV (cv);
2563 CvFILE (ncv) = CvFILE (cv);
2564
2565 Newz (0, coro, 1, struct coro);
2566 coro->args = newAV ();
2567 coro->flags = CF_NEW;
2568
2569 av_extend (coro->args, items - 1);
2570 for (i = 1; i < items; i++)
2571 av_push (coro->args, newSVsv (ST (i)));
2572
2573 CvISXSUB_on (ncv);
2574 CvXSUBANY (ncv).any_ptr = (void *)coro;
2575
2576 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2577
2578 CvXSUB (ncv) = CvXSUB (xcv);
2579 CvANON_on (ncv);
2580
2581 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2582 RETVAL = newRV_noinc ((SV *)ncv);
2583}
2584 OUTPUT: 4010 OUTPUT:
2585 RETVAL 4011 RETVAL
2586 4012
2587#endif
2588
2589
2590MODULE = Coro::State PACKAGE = Coro::AIO
2591
2592void 4013void
2593_get_state (SV *self) 4014rouse_wait (...)
2594 PROTOTYPE: $ 4015 PROTOTYPE: ;$
2595 PPCODE: 4016 PPCODE:
2596{ 4017 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2597 AV *defav = GvAV (PL_defgv);
2598 AV *av = newAV ();
2599 int i;
2600 SV *data_sv = newSV (sizeof (struct io_state));
2601 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2602 SvCUR_set (data_sv, sizeof (struct io_state));
2603 SvPOK_only (data_sv);
2604
2605 data->errorno = errno;
2606 data->laststype = PL_laststype;
2607 data->laststatval = PL_laststatval;
2608 data->statcache = PL_statcache;
2609
2610 av_extend (av, AvFILLp (defav) + 1 + 1);
2611
2612 for (i = 0; i <= AvFILLp (defav); ++i)
2613 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
2614
2615 av_push (av, data_sv);
2616
2617 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
2618
2619 api_ready (aTHX_ self);
2620}
2621 4018
2622void 4019void
2623_set_state (SV *state) 4020on_enter (SV *block)
4021 ALIAS:
4022 on_leave = 1
2624 PROTOTYPE: $ 4023 PROTOTYPE: &
2625 PPCODE:
2626{
2627 AV *av = (AV *)SvRV (state);
2628 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
2629 int i;
2630
2631 errno = data->errorno;
2632 PL_laststype = data->laststype;
2633 PL_laststatval = data->laststatval;
2634 PL_statcache = data->statcache;
2635
2636 EXTEND (SP, AvFILLp (av));
2637 for (i = 0; i < AvFILLp (av); ++i)
2638 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
2639}
2640
2641
2642MODULE = Coro::State PACKAGE = Coro::AnyEvent
2643
2644BOOT:
2645 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2646
2647SV *
2648_schedule (...)
2649 CODE: 4024 CODE:
2650{ 4025{
2651 static int incede; 4026 struct coro *coro = SvSTATE_current;
4027 AV **avp = ix ? &coro->on_leave : &coro->on_enter;
2652 4028
2653 api_cede_notself (aTHX); 4029 block = s_get_cv_croak (block);
2654 4030
2655 ++incede; 4031 if (!*avp)
2656 while (coro_nready >= incede && api_cede (aTHX)) 4032 *avp = newAV ();
2657 ;
2658 4033
2659 sv_setsv (sv_activity, &PL_sv_undef); 4034 av_push (*avp, SvREFCNT_inc (block));
2660 if (coro_nready >= incede)
2661 {
2662 PUSHMARK (SP);
2663 PUTBACK;
2664 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
2665 SPAGAIN;
2666 }
2667 4035
2668 --incede; 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 */
2669} 4042}
2670 4043
2671 4044
2672MODULE = Coro::State PACKAGE = PerlIO::cede 4045MODULE = Coro::State PACKAGE = PerlIO::cede
2673 4046
2674BOOT: 4047BOOT:
2675 PerlIO_define_layer (aTHX_ &PerlIO_cede); 4048 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2676 4049
4050
2677MODULE = Coro::State PACKAGE = Coro::Semaphore 4051MODULE = Coro::State PACKAGE = Coro::Semaphore
2678 4052
2679SV * 4053SV *
2680new (SV *klass, SV *count_ = 0) 4054new (SV *klass, SV *count = 0)
2681 CODE: 4055 CODE:
2682{ 4056{
2683 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ 4057 int semcnt = 1;
2684 AV *av = newAV (); 4058
2685 av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); 4059 if (count)
2686 RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); 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 );
2687} 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);
2688 OUTPUT: 4080 OUTPUT:
2689 RETVAL 4081 RETVAL
2690 4082
2691SV * 4083SV *
2692count (SV *self) 4084count (SV *self)
… …
2698void 4090void
2699up (SV *self, int adjust = 1) 4091up (SV *self, int adjust = 1)
2700 ALIAS: 4092 ALIAS:
2701 adjust = 1 4093 adjust = 1
2702 CODE: 4094 CODE:
2703{ 4095 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
2704 AV *av = (AV *)SvRV (self);
2705 SV *count_sv = AvARRAY (av)[0];
2706 IV count = SvIVX (count_sv);
2707
2708 count += ix ? adjust : 1;
2709 SvIVX (count_sv) = count;
2710
2711 /* now wake up as many waiters as possible */
2712 while (count > 0 && AvFILLp (av) >= count)
2713 {
2714 SV *cb;
2715
2716 /* swap first two elements so we can shift a waiter */
2717 AvARRAY (av)[0] = AvARRAY (av)[1];
2718 AvARRAY (av)[1] = count_sv;
2719 cb = av_shift (av);
2720
2721 if (SvOBJECT (cb))
2722 api_ready (cb);
2723 else
2724 croak ("callbacks not yet supported");
2725
2726 SvREFCNT_dec (cb);
2727 }
2728}
2729 4096
2730void 4097void
2731down (SV *self) 4098down (...)
2732 CODE: 4099 CODE:
2733 api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); 4100 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
4101
4102void
4103wait (...)
4104 CODE:
4105 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
2734 4106
2735void 4107void
2736try (SV *self) 4108try (SV *self)
2737 PPCODE: 4109 PPCODE:
2738{ 4110{
… …
2750 XSRETURN_NO; 4122 XSRETURN_NO;
2751} 4123}
2752 4124
2753void 4125void
2754waiters (SV *self) 4126waiters (SV *self)
2755 CODE: 4127 PPCODE:
2756{ 4128{
2757 AV *av = (AV *)SvRV (self); 4129 AV *av = (AV *)SvRV (self);
4130 int wcount = AvFILLp (av) + 1 - 1;
2758 4131
2759 if (GIMME_V == G_SCALAR) 4132 if (GIMME_V == G_SCALAR)
2760 XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); 4133 XPUSHs (sv_2mortal (newSViv (wcount)));
2761 else 4134 else
2762 { 4135 {
2763 int i; 4136 int i;
2764 EXTEND (SP, AvFILLp (av) + 1 - 1); 4137 EXTEND (SP, wcount);
2765 for (i = 1; i <= AvFILLp (av); ++i) 4138 for (i = 1; i <= wcount; ++i)
2766 PUSHs (newSVsv (AvARRAY (av)[i])); 4139 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
2767 } 4140 }
2768} 4141}
2769 4142
4143MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
4144
4145void
4146_may_delete (SV *sem, int count, unsigned int extra_refs)
4147 PPCODE:
4148{
4149 AV *av = (AV *)SvRV (sem);
4150
4151 if (SvREFCNT ((SV *)av) == 1 + extra_refs
4152 && AvFILLp (av) == 0 /* no waiters, just count */
4153 && SvIV (AvARRAY (av)[0]) == count)
4154 XSRETURN_YES;
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
4190 if (AvFILLp (av))
4191 coro_signal_wake (aTHX_ av, 1);
4192 else
4193 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
4194}
4195
4196IV
4197awaited (SV *self)
4198 CODE:
4199 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
4200 OUTPUT:
4201 RETVAL
4202
4203
4204MODULE = Coro::State PACKAGE = Coro::AnyEvent
4205
4206BOOT:
4207 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
4208
4209void
4210_schedule (...)
4211 CODE:
4212{
4213 static int incede;
4214
4215 api_cede_notself (aTHX);
4216
4217 ++incede;
4218 while (coro_nready >= incede && api_cede (aTHX))
4219 ;
4220
4221 sv_setsv (sv_activity, &PL_sv_undef);
4222 if (coro_nready >= incede)
4223 {
4224 PUSHMARK (SP);
4225 PUTBACK;
4226 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
4227 }
4228
4229 --incede;
4230}
4231
4232
4233MODULE = Coro::State PACKAGE = Coro::AIO
4234
4235void
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}
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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