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Comparing Coro/Coro/State.xs (file contents):
Revision 1.61 by root, Tue Aug 10 01:56:30 2004 UTC vs.
Revision 1.327 by root, Mon Nov 24 06:07:16 2008 UTC

1#include "libcoro/coro.c"
2
1#define PERL_NO_GET_CONTEXT 3#define PERL_NO_GET_CONTEXT
4#define PERL_EXT
2 5
3#include "EXTERN.h" 6#include "EXTERN.h"
4#include "perl.h" 7#include "perl.h"
5#include "XSUB.h" 8#include "XSUB.h"
9#include "perliol.h"
6 10
7#include "patchlevel.h" 11#include "patchlevel.h"
8 12
9#if PATCHLEVEL < 6 13#include <stdio.h>
14#include <errno.h>
15#include <assert.h>
16
17#ifdef WIN32
18# undef setjmp
19# undef longjmp
20# undef _exit
21# define setjmp _setjmp /* deep magic */
22#else
23# include <inttypes.h> /* most portable stdint.h */
24#endif
25
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 */
54static int cctx_max_idle = 4;
55
56#define PERL_VERSION_ATLEAST(a,b,c) \
57 (PERL_REVISION > (a) \
58 || (PERL_REVISION == (a) \
59 && (PERL_VERSION > (b) \
60 || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61
62#if !PERL_VERSION_ATLEAST (5,6,0)
10# ifndef PL_ppaddr 63# ifndef PL_ppaddr
11# define PL_ppaddr ppaddr 64# define PL_ppaddr ppaddr
12# endif 65# endif
13# ifndef call_sv 66# ifndef call_sv
14# define call_sv perl_call_sv 67# define call_sv perl_call_sv
… …
25# ifndef IS_PADCONST 78# ifndef IS_PADCONST
26# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
27# endif 80# endif
28#endif 81#endif
29 82
30#include "libcoro/coro.c" 83/* 5.11 */
31 84#ifndef CxHASARGS
32#include <signal.h> 85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
33
34#ifdef HAVE_MMAP
35# include <unistd.h>
36# include <sys/mman.h>
37# ifndef MAP_ANONYMOUS
38# ifdef MAP_ANON
39# define MAP_ANONYMOUS MAP_ANON
40# else
41# undef HAVE_MMAP
42# endif 86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
93/* 5.8.8 */
94#ifndef GV_NOTQUAL
95# define GV_NOTQUAL 0
96#endif
97#ifndef newSV
98# define newSV(l) NEWSV(0,l)
99#endif
100#ifndef CvISXSUB_on
101# define CvISXSUB_on(cv) (void)cv
102#endif
103#ifndef CvISXSUB
104# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105#endif
106#ifndef Newx
107# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108#endif
109
110/* 5.8.7 */
111#ifndef SvRV_set
112# define SvRV_set(s,v) SvRV(s) = (v)
113#endif
114
115#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116# undef CORO_STACKGUARD
117#endif
118
119#ifndef CORO_STACKGUARD
120# define CORO_STACKGUARD 0
121#endif
122
123/* prefer perl internal functions over our own? */
124#ifndef CORO_PREFER_PERL_FUNCTIONS
125# define CORO_PREFER_PERL_FUNCTIONS 0
126#endif
127
128/* The next macros try to return the current stack pointer, in an as
129 * portable way as possible. */
130#if __GNUC__ >= 4
131# define dSTACKLEVEL int stacklevel_dummy
132# define STACKLEVEL __builtin_frame_address (0)
133#else
134# define dSTACKLEVEL volatile void *stacklevel
135# define STACKLEVEL ((void *)&stacklevel)
136#endif
137
138#define IN_DESTRUCT (PL_main_cv == Nullcv)
139
140#if __GNUC__ >= 3
141# define attribute(x) __attribute__(x)
142# define expect(expr,value) __builtin_expect ((expr),(value))
143# define INLINE static inline
144#else
145# define attribute(x)
146# define expect(expr,value) (expr)
147# define INLINE static
148#endif
149
150#define expect_false(expr) expect ((expr) != 0, 0)
151#define expect_true(expr) expect ((expr) != 0, 1)
152
153#define NOINLINE attribute ((noinline))
154
155#include "CoroAPI.h"
156#define GCoroAPI (&coroapi) /* very sneaky */
157
158#ifdef USE_ITHREADS
159# if CORO_PTHREAD
160static void *coro_thx;
43# endif 161# endif
44#endif 162#endif
45 163
46#define SUB_INIT "Coro::State::initialize" 164static double (*nvtime)(); /* so why doesn't it take void? */
47#define UCORO_STATE "_coro_state"
48 165
49/* The next macro should declare a variable stacklevel that contains and approximation 166/* we hijack an hopefully unused CV flag for our purposes */
50 * to the current C stack pointer. Its property is that it changes with each call 167#define CVf_SLF 0x4000
51 * and should be unique. */ 168static OP *pp_slf (pTHX);
52#define dSTACKLEVEL void *stacklevel = &stacklevel
53 169
54#define IN_DESTRUCT (PL_main_cv == Nullcv) 170static U32 cctx_gen;
55 171static size_t cctx_stacksize = CORO_STACKSIZE;
56#define labs(l) ((l) >= 0 ? (l) : -(l))
57
58#include "CoroAPI.h"
59
60#ifdef USE_ITHREADS
61static perl_mutex coro_mutex;
62# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
63# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
64#else
65# define LOCK 0
66# define UNLOCK 0
67#endif
68
69static struct CoroAPI coroapi; 172static struct CoroAPI coroapi;
70static AV *main_mainstack; /* used to differentiate between $main and others */ 173static AV *main_mainstack; /* used to differentiate between $main and others */
174static JMPENV *main_top_env;
71static HV *coro_state_stash; 175static HV *coro_state_stash, *coro_stash;
72static SV *ucoro_state_sv;
73static U32 ucoro_state_hash;
74static SV *coro_mortal; /* will be freed after next transfer */ 176static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
75 177
76/* this is actually not only the c stack but also c registers etc... */ 178static AV *av_destroy; /* destruction queue */
179static SV *sv_manager; /* the manager coro */
180static SV *sv_idle; /* $Coro::idle */
181
182static GV *irsgv; /* $/ */
183static GV *stdoutgv; /* *STDOUT */
184static SV *rv_diehook;
185static SV *rv_warnhook;
186static HV *hv_sig; /* %SIG */
187
188/* async_pool helper stuff */
189static SV *sv_pool_rss;
190static SV *sv_pool_size;
191static SV *sv_async_pool_idle; /* description string */
192static AV *av_async_pool; /* idle pool */
193static SV *sv_Coro; /* class string */
194static CV *cv_pool_handler;
195static CV *cv_coro_state_new;
196
197/* Coro::AnyEvent */
198static SV *sv_activity;
199
200static struct coro_cctx *cctx_first;
201static int cctx_count, cctx_idle;
202
203enum {
204 CC_MAPPED = 0x01,
205 CC_NOREUSE = 0x02, /* throw this away after tracing */
206 CC_TRACE = 0x04,
207 CC_TRACE_SUB = 0x08, /* trace sub calls */
208 CC_TRACE_LINE = 0x10, /* trace each statement */
209 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
210};
211
212/* this is a structure representing a c-level coroutine */
77typedef struct { 213typedef struct coro_cctx
78 int refcnt; /* pointer reference counter */ 214{
79 int usecnt; /* shared by how many coroutines */ 215 struct coro_cctx *next;
80 int gencnt; /* generation counter */
81 216
217 /* the stack */
218 void *sptr;
219 size_t ssize;
220
221 /* cpu state */
222 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
223 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
224 JMPENV *top_env;
82 coro_context cctx; 225 coro_context cctx;
83 226
84 void *sptr; 227 U32 gen;
85 long ssize; /* positive == mmap, otherwise malloc */ 228#if CORO_USE_VALGRIND
86} coro_stack; 229 int valgrind_id;
230#endif
231 unsigned char flags;
232} coro_cctx;
87 233
234coro_cctx *cctx_current; /* the currently running cctx */
235
236/*****************************************************************************/
237
238enum {
239 CF_RUNNING = 0x0001, /* coroutine is running */
240 CF_READY = 0x0002, /* coroutine is ready */
241 CF_NEW = 0x0004, /* has never been switched to */
242 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
243};
244
245/* the structure where most of the perl state is stored, overlaid on the cxstack */
246typedef struct
247{
248 SV *defsv;
249 AV *defav;
250 SV *errsv;
251 SV *irsgv;
252 HV *hinthv;
253#define VAR(name,type) type name;
254# include "state.h"
255#undef VAR
256} perl_slots;
257
258#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
259
260/* this is a structure representing a perl-level coroutine */
88struct coro { 261struct coro {
89 /* the top-level JMPENV for each coroutine, needed to catch dies. */ 262 /* the C coroutine allocated to this perl coroutine, if any */
90 JMPENV start_env; 263 coro_cctx *cctx;
91 264
92 /* the optional C context */ 265 /* state data */
93 coro_stack *stack; 266 struct CoroSLF slf_frame; /* saved slf frame */
94 void *cursp;
95 int gencnt;
96
97 /* optionally saved, might be zero */
98 AV *defav;
99 SV *defsv;
100 SV *errsv;
101
102 /* saved global state not related to stacks */
103 U8 dowarn;
104 I32 in_eval;
105
106 /* the stacks and related info (callchain etc..) */
107 PERL_SI *curstackinfo;
108 AV *curstack;
109 AV *mainstack; 267 AV *mainstack;
110 SV **stack_sp; 268 perl_slots *slot; /* basically the saved sp */
111 OP *op;
112 SV **curpad;
113 AV *comppad;
114 SV **stack_base;
115 SV **stack_max;
116 SV **tmps_stack;
117 I32 tmps_floor;
118 I32 tmps_ix;
119 I32 tmps_max;
120 I32 *markstack;
121 I32 *markstack_ptr;
122 I32 *markstack_max;
123 I32 *scopestack;
124 I32 scopestack_ix;
125 I32 scopestack_max;
126 ANY *savestack;
127 I32 savestack_ix;
128 I32 savestack_max;
129 OP **retstack;
130 I32 retstack_ix;
131 I32 retstack_max;
132 COP *curcop;
133 JMPENV *top_env;
134 269
270 CV *startcv; /* the CV to execute */
135 /* data associated with this coroutine (initial args) */ 271 AV *args; /* data associated with this coroutine (initial args) */
136 AV *args; 272 int refcnt; /* coroutines are refcounted, yes */
273 int flags; /* CF_ flags */
274 HV *hv; /* the perl hash associated with this coro, if any */
275 void (*on_destroy)(pTHX_ struct coro *coro);
276
277 /* statistics */
278 int usecount; /* number of transfers to this coro */
279
280 /* coro process data */
281 int prio;
282 SV *except; /* exception to be thrown */
283 SV *rouse_cb;
284
285 /* async_pool */
286 SV *saved_deffh;
287 SV *invoke_cb;
288 AV *invoke_av;
289
290 /* linked list */
291 struct coro *next, *prev;
137}; 292};
138 293
139typedef struct coro *Coro__State; 294typedef struct coro *Coro__State;
140typedef struct coro *Coro__State_or_hashref; 295typedef struct coro *Coro__State_or_hashref;
141 296
142/* mostly copied from op.c:cv_clone2 */ 297/* the following variables are effectively part of the perl context */
143STATIC AV * 298/* and get copied between struct coro and these variables */
144clone_padlist (pTHX_ AV *protopadlist) 299/* the mainr easonw e don't support windows process emulation */
300static struct CoroSLF slf_frame; /* the current slf frame */
301
302/** Coro ********************************************************************/
303
304#define PRIO_MAX 3
305#define PRIO_HIGH 1
306#define PRIO_NORMAL 0
307#define PRIO_LOW -1
308#define PRIO_IDLE -3
309#define PRIO_MIN -4
310
311/* for Coro.pm */
312static SV *coro_current;
313static SV *coro_readyhook;
314static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
315static CV *cv_coro_run, *cv_coro_terminate;
316static struct coro *coro_first;
317#define coro_nready coroapi.nready
318
319/** lowlevel stuff **********************************************************/
320
321static SV *
322coro_get_sv (pTHX_ const char *name, int create)
145{ 323{
146 AV *av; 324#if PERL_VERSION_ATLEAST (5,10,0)
147 I32 ix; 325 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
148 AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); 326 get_sv (name, create);
149 AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); 327#endif
150 SV **pname = AvARRAY (protopad_name); 328 return get_sv (name, create);
151 SV **ppad = AvARRAY (protopad); 329}
152 I32 fname = AvFILLp (protopad_name); 330
153 I32 fpad = AvFILLp (protopad); 331static AV *
332coro_get_av (pTHX_ const char *name, int create)
333{
334#if PERL_VERSION_ATLEAST (5,10,0)
335 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
336 get_av (name, create);
337#endif
338 return get_av (name, create);
339}
340
341static HV *
342coro_get_hv (pTHX_ const char *name, int create)
343{
344#if PERL_VERSION_ATLEAST (5,10,0)
345 /* silence stupid and wrong 5.10 warning that I am unable to switch off */
346 get_hv (name, create);
347#endif
348 return get_hv (name, create);
349}
350
351/* may croak */
352INLINE CV *
353coro_sv_2cv (pTHX_ SV *sv)
354{
355 HV *st;
356 GV *gvp;
357 return sv_2cv (sv, &st, &gvp, 0);
358}
359
360static AV *
361coro_derive_padlist (pTHX_ CV *cv)
362{
363 AV *padlist = CvPADLIST (cv);
154 AV *newpadlist, *newpad_name, *newpad; 364 AV *newpadlist, *newpad;
155 SV **npad;
156
157 newpad_name = newAV ();
158 for (ix = fname; ix >= 0; ix--)
159 av_store (newpad_name, ix, SvREFCNT_inc (pname[ix]));
160
161 newpad = newAV ();
162 av_fill (newpad, AvFILLp (protopad));
163 npad = AvARRAY (newpad);
164 365
165 newpadlist = newAV (); 366 newpadlist = newAV ();
166 AvREAL_off (newpadlist); 367 AvREAL_off (newpadlist);
167 av_store (newpadlist, 0, (SV *) newpad_name); 368#if PERL_VERSION_ATLEAST (5,10,0)
369 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
370#else
371 Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
372#endif
373 newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
374 --AvFILLp (padlist);
375
376 av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
168 av_store (newpadlist, 1, (SV *) newpad); 377 av_store (newpadlist, 1, (SV *)newpad);
169
170 av = newAV (); /* will be @_ */
171 av_extend (av, 0);
172 av_store (newpad, 0, (SV *) av);
173 AvFLAGS (av) = AVf_REIFY;
174
175 for (ix = fpad; ix > 0; ix--)
176 {
177 SV *namesv = (ix <= fname) ? pname[ix] : Nullsv;
178
179 if (namesv && namesv != &PL_sv_undef)
180 {
181 char *name = SvPVX (namesv); /* XXX */
182
183 if (SvFLAGS (namesv) & SVf_FAKE || *name == '&')
184 { /* lexical from outside? */
185 npad[ix] = SvREFCNT_inc (ppad[ix]);
186 }
187 else
188 { /* our own lexical */
189 SV *sv;
190 if (*name == '&')
191 sv = SvREFCNT_inc (ppad[ix]);
192 else if (*name == '@')
193 sv = (SV *) newAV ();
194 else if (*name == '%')
195 sv = (SV *) newHV ();
196 else
197 sv = NEWSV (0, 0);
198
199#ifdef SvPADBUSY
200 if (!SvPADBUSY (sv))
201#endif
202 SvPADMY_on (sv);
203
204 npad[ix] = sv;
205 }
206 }
207 else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix]))
208 {
209 npad[ix] = SvREFCNT_inc (ppad[ix]);
210 }
211 else
212 {
213 SV *sv = NEWSV (0, 0);
214 SvPADTMP_on (sv);
215 npad[ix] = sv;
216 }
217 }
218
219#if 0 /* return -ENOTUNDERSTOOD */
220 /* Now that vars are all in place, clone nested closures. */
221
222 for (ix = fpad; ix > 0; ix--) {
223 SV* namesv = (ix <= fname) ? pname[ix] : Nullsv;
224 if (namesv
225 && namesv != &PL_sv_undef
226 && !(SvFLAGS(namesv) & SVf_FAKE)
227 && *SvPVX(namesv) == '&'
228 && CvCLONE(ppad[ix]))
229 {
230 CV *kid = cv_clone((CV*)ppad[ix]);
231 SvREFCNT_dec(ppad[ix]);
232 CvCLONE_on(kid);
233 SvPADMY_on(kid);
234 npad[ix] = (SV*)kid;
235 }
236 }
237#endif
238 378
239 return newpadlist; 379 return newpadlist;
240} 380}
241 381
242STATIC void 382static void
243free_padlist (pTHX_ AV *padlist) 383free_padlist (pTHX_ AV *padlist)
244{ 384{
245 /* may be during global destruction */ 385 /* may be during global destruction */
246 if (SvREFCNT (padlist)) 386 if (SvREFCNT (padlist))
247 { 387 {
… …
261 401
262 SvREFCNT_dec ((SV*)padlist); 402 SvREFCNT_dec ((SV*)padlist);
263 } 403 }
264} 404}
265 405
266STATIC int 406static int
267coro_cv_free (pTHX_ SV *sv, MAGIC *mg) 407coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
268{ 408{
269 AV *padlist; 409 AV *padlist;
270 AV *av = (AV *)mg->mg_obj; 410 AV *av = (AV *)mg->mg_obj;
271 411
272 /* casting is fun. */ 412 /* casting is fun. */
273 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) 413 while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
274 free_padlist (aTHX_ padlist); 414 free_padlist (aTHX_ padlist);
275 415
276 SvREFCNT_dec (av); 416 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
277}
278 417
418 return 0;
419}
420
421#define CORO_MAGIC_type_cv 26
279#define PERL_MAGIC_coro PERL_MAGIC_ext 422#define CORO_MAGIC_type_state PERL_MAGIC_ext
280 423
281static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; 424static MGVTBL coro_cv_vtbl = {
425 0, 0, 0, 0,
426 coro_cv_free
427};
428
429#define CORO_MAGIC_NN(sv, type) \
430 (expect_true (SvMAGIC (sv)->mg_type == type) \
431 ? SvMAGIC (sv) \
432 : mg_find (sv, type))
433
434#define CORO_MAGIC(sv, type) \
435 (expect_true (SvMAGIC (sv)) \
436 ? CORO_MAGIC_NN (sv, type) \
437 : 0)
438
439#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
440#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
441
442INLINE struct coro *
443SvSTATE_ (pTHX_ SV *coro)
444{
445 HV *stash;
446 MAGIC *mg;
447
448 if (SvROK (coro))
449 coro = SvRV (coro);
450
451 if (expect_false (SvTYPE (coro) != SVt_PVHV))
452 croak ("Coro::State object required");
453
454 stash = SvSTASH (coro);
455 if (expect_false (stash != coro_stash && stash != coro_state_stash))
456 {
457 /* very slow, but rare, check */
458 if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
459 croak ("Coro::State object required");
460 }
461
462 mg = CORO_MAGIC_state (coro);
463 return (struct coro *)mg->mg_ptr;
464}
465
466#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
467
468/* faster than SvSTATE, but expects a coroutine hv */
469#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
470#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
282 471
283/* the next two functions merely cache the padlists */ 472/* the next two functions merely cache the padlists */
284STATIC void 473static void
285get_padlist (pTHX_ CV *cv) 474get_padlist (pTHX_ CV *cv)
286{ 475{
287 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 476 MAGIC *mg = CORO_MAGIC_cv (cv);
477 AV *av;
288 478
289 if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) 479 if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
290 CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); 480 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291 else 481 else
482 {
483#if CORO_PREFER_PERL_FUNCTIONS
484 /* this is probably cleaner? but also slower! */
485 /* in practise, it seems to be less stable */
486 CV *cp = Perl_cv_clone (aTHX_ cv);
487 CvPADLIST (cv) = CvPADLIST (cp);
488 CvPADLIST (cp) = 0;
489 SvREFCNT_dec (cp);
490#else
292 CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); 491 CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
492#endif
493 }
293} 494}
294 495
295STATIC void 496static void
296put_padlist (pTHX_ CV *cv) 497put_padlist (pTHX_ CV *cv)
297{ 498{
298 MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); 499 MAGIC *mg = CORO_MAGIC_cv (cv);
500 AV *av;
299 501
300 if (!mg) 502 if (expect_false (!mg))
301 { 503 mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
302 sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
303 mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
304 mg->mg_virtual = &vtbl_coro;
305 mg->mg_obj = (SV *)newAV ();
306 }
307 504
308 av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); 505 av = (AV *)mg->mg_obj;
309}
310 506
311#define SB do { 507 if (expect_false (AvFILLp (av) >= AvMAX (av)))
312#define SE } while (0) 508 av_extend (av, AvMAX (av) + 1);
313 509
314#define LOAD(state) load_state(aTHX_ (state)); 510 AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
315#define SAVE(state,flags) save_state(aTHX_ (state),(flags)); 511}
316 512
317#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE 513/** load & save, init *******************************************************/
318 514
319static void 515static void
320load_state(pTHX_ Coro__State c) 516load_perl (pTHX_ Coro__State c)
321{ 517{
322 PL_dowarn = c->dowarn; 518 perl_slots *slot = c->slot;
323 PL_in_eval = c->in_eval; 519 c->slot = 0;
324 520
325 PL_curstackinfo = c->curstackinfo;
326 PL_curstack = c->curstack;
327 PL_mainstack = c->mainstack; 521 PL_mainstack = c->mainstack;
328 PL_stack_sp = c->stack_sp;
329 PL_op = c->op;
330 PL_curpad = c->curpad;
331 PL_comppad = c->comppad;
332 PL_stack_base = c->stack_base;
333 PL_stack_max = c->stack_max;
334 PL_tmps_stack = c->tmps_stack;
335 PL_tmps_floor = c->tmps_floor;
336 PL_tmps_ix = c->tmps_ix;
337 PL_tmps_max = c->tmps_max;
338 PL_markstack = c->markstack;
339 PL_markstack_ptr = c->markstack_ptr;
340 PL_markstack_max = c->markstack_max;
341 PL_scopestack = c->scopestack;
342 PL_scopestack_ix = c->scopestack_ix;
343 PL_scopestack_max = c->scopestack_max;
344 PL_savestack = c->savestack;
345 PL_savestack_ix = c->savestack_ix;
346 PL_savestack_max = c->savestack_max;
347 PL_retstack = c->retstack;
348 PL_retstack_ix = c->retstack_ix;
349 PL_retstack_max = c->retstack_max;
350 PL_curcop = c->curcop;
351 PL_top_env = c->top_env;
352 522
353 if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); 523 GvSV (PL_defgv) = slot->defsv;
354 if (c->defsv) REPLACE_SV (DEFSV , c->defsv); 524 GvAV (PL_defgv) = slot->defav;
355 if (c->errsv) REPLACE_SV (ERRSV , c->errsv); 525 GvSV (PL_errgv) = slot->errsv;
526 GvSV (irsgv) = slot->irsgv;
527 GvHV (PL_hintgv) = slot->hinthv;
528
529 #define VAR(name,type) PL_ ## name = slot->name;
530 # include "state.h"
531 #undef VAR
356 532
357 { 533 {
358 dSP; 534 dSP;
535
359 CV *cv; 536 CV *cv;
360 537
361 /* now do the ugly restore mess */ 538 /* now do the ugly restore mess */
362 while ((cv = (CV *)POPs)) 539 while (expect_true (cv = (CV *)POPs))
363 { 540 {
364 AV *padlist = (AV *)POPs;
365
366 if (padlist)
367 {
368 put_padlist (aTHX_ cv); /* mark this padlist as available */ 541 put_padlist (aTHX_ cv); /* mark this padlist as available */
369 CvPADLIST(cv) = padlist; 542 CvDEPTH (cv) = PTR2IV (POPs);
370 } 543 CvPADLIST (cv) = (AV *)POPs;
371
372 ++CvDEPTH(cv);
373 } 544 }
374 545
375 PUTBACK; 546 PUTBACK;
376 } 547 }
377}
378 548
549 slf_frame = c->slf_frame;
550 CORO_THROW = c->except;
551}
552
379static void 553static void
380save_state(pTHX_ Coro__State c, int flags) 554save_perl (pTHX_ Coro__State c)
381{ 555{
556 c->except = CORO_THROW;
557 c->slf_frame = slf_frame;
558
382 { 559 {
383 dSP; 560 dSP;
384 I32 cxix = cxstack_ix; 561 I32 cxix = cxstack_ix;
385 PERL_CONTEXT *ccstk = cxstack; 562 PERL_CONTEXT *ccstk = cxstack;
386 PERL_SI *top_si = PL_curstackinfo; 563 PERL_SI *top_si = PL_curstackinfo;
… …
388 /* 565 /*
389 * the worst thing you can imagine happens first - we have to save 566 * the worst thing you can imagine happens first - we have to save
390 * (and reinitialize) all cv's in the whole callchain :( 567 * (and reinitialize) all cv's in the whole callchain :(
391 */ 568 */
392 569
393 PUSHs (Nullsv); 570 XPUSHs (Nullsv);
394 /* this loop was inspired by pp_caller */ 571 /* this loop was inspired by pp_caller */
395 for (;;) 572 for (;;)
396 { 573 {
397 while (cxix >= 0) 574 while (expect_true (cxix >= 0))
398 { 575 {
399 PERL_CONTEXT *cx = &ccstk[cxix--]; 576 PERL_CONTEXT *cx = &ccstk[cxix--];
400 577
401 if (CxTYPE(cx) == CXt_SUB) 578 if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
402 { 579 {
403 CV *cv = cx->blk_sub.cv; 580 CV *cv = cx->blk_sub.cv;
581
404 if (CvDEPTH(cv)) 582 if (expect_true (CvDEPTH (cv)))
405 { 583 {
406 EXTEND (SP, CvDEPTH(cv)*2); 584 EXTEND (SP, 3);
407
408 while (--CvDEPTH(cv))
409 {
410 /* this tells the restore code to increment CvDEPTH */
411 PUSHs (Nullsv);
412 PUSHs ((SV *)cv);
413 }
414
415 PUSHs ((SV *)CvPADLIST(cv)); 585 PUSHs ((SV *)CvPADLIST (cv));
586 PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
416 PUSHs ((SV *)cv); 587 PUSHs ((SV *)cv);
417 588
589 CvDEPTH (cv) = 0;
418 get_padlist (aTHX_ cv); /* this is a monster */ 590 get_padlist (aTHX_ cv);
419 } 591 }
420 } 592 }
421#ifdef CXt_FORMAT
422 else if (CxTYPE(cx) == CXt_FORMAT)
423 {
424 /* I never used formats, so how should I know how these are implemented? */
425 /* my bold guess is as a simple, plain sub... */
426 croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
427 }
428#endif
429 } 593 }
430 594
431 if (top_si->si_type == PERLSI_MAIN) 595 if (expect_true (top_si->si_type == PERLSI_MAIN))
432 break; 596 break;
433 597
434 top_si = top_si->si_prev; 598 top_si = top_si->si_prev;
435 ccstk = top_si->si_cxstack; 599 ccstk = top_si->si_cxstack;
436 cxix = top_si->si_cxix; 600 cxix = top_si->si_cxix;
437 } 601 }
438 602
439 PUTBACK; 603 PUTBACK;
440 } 604 }
441 605
442 c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; 606 /* allocate some space on the context stack for our purposes */
443 c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; 607 /* we manually unroll here, as usually 2 slots is enough */
444 c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; 608 if (SLOT_COUNT >= 1) CXINC;
609 if (SLOT_COUNT >= 2) CXINC;
610 if (SLOT_COUNT >= 3) CXINC;
611 {
612 int i;
613 for (i = 3; i < SLOT_COUNT; ++i)
614 CXINC;
615 }
616 cxstack_ix -= SLOT_COUNT; /* undo allocation */
445 617
446 c->dowarn = PL_dowarn;
447 c->in_eval = PL_in_eval;
448
449 c->curstackinfo = PL_curstackinfo;
450 c->curstack = PL_curstack;
451 c->mainstack = PL_mainstack; 618 c->mainstack = PL_mainstack;
452 c->stack_sp = PL_stack_sp; 619
453 c->op = PL_op; 620 {
454 c->curpad = PL_curpad; 621 perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
455 c->comppad = PL_comppad; 622
456 c->stack_base = PL_stack_base; 623 slot->defav = GvAV (PL_defgv);
457 c->stack_max = PL_stack_max; 624 slot->defsv = DEFSV;
458 c->tmps_stack = PL_tmps_stack; 625 slot->errsv = ERRSV;
459 c->tmps_floor = PL_tmps_floor; 626 slot->irsgv = GvSV (irsgv);
460 c->tmps_ix = PL_tmps_ix; 627 slot->hinthv = GvHV (PL_hintgv);
461 c->tmps_max = PL_tmps_max; 628
462 c->markstack = PL_markstack; 629 #define VAR(name,type) slot->name = PL_ ## name;
463 c->markstack_ptr = PL_markstack_ptr; 630 # include "state.h"
464 c->markstack_max = PL_markstack_max; 631 #undef VAR
465 c->scopestack = PL_scopestack; 632 }
466 c->scopestack_ix = PL_scopestack_ix;
467 c->scopestack_max = PL_scopestack_max;
468 c->savestack = PL_savestack;
469 c->savestack_ix = PL_savestack_ix;
470 c->savestack_max = PL_savestack_max;
471 c->retstack = PL_retstack;
472 c->retstack_ix = PL_retstack_ix;
473 c->retstack_max = PL_retstack_max;
474 c->curcop = PL_curcop;
475 c->top_env = PL_top_env;
476} 633}
477 634
478/* 635/*
479 * allocate various perl stacks. This is an exact copy 636 * allocate various perl stacks. This is almost an exact copy
480 * of perl.c:init_stacks, except that it uses less memory 637 * of perl.c:init_stacks, except that it uses less memory
481 * on the (sometimes correct) assumption that coroutines do 638 * on the (sometimes correct) assumption that coroutines do
482 * not usually need a lot of stackspace. 639 * not usually need a lot of stackspace.
483 */ 640 */
484STATIC void 641#if CORO_PREFER_PERL_FUNCTIONS
642# define coro_init_stacks(thx) init_stacks ()
643#else
644static void
485coro_init_stacks (pTHX) 645coro_init_stacks (pTHX)
486{ 646{
487 LOCK; 647 PL_curstackinfo = new_stackinfo(32, 8);
488
489 PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);
490 PL_curstackinfo->si_type = PERLSI_MAIN; 648 PL_curstackinfo->si_type = PERLSI_MAIN;
491 PL_curstack = PL_curstackinfo->si_stack; 649 PL_curstack = PL_curstackinfo->si_stack;
492 PL_mainstack = PL_curstack; /* remember in case we switch stacks */ 650 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
493 651
494 PL_stack_base = AvARRAY(PL_curstack); 652 PL_stack_base = AvARRAY(PL_curstack);
495 PL_stack_sp = PL_stack_base; 653 PL_stack_sp = PL_stack_base;
496 PL_stack_max = PL_stack_base + AvMAX(PL_curstack); 654 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
497 655
498 New(50,PL_tmps_stack,96,SV*); 656 New(50,PL_tmps_stack,32,SV*);
499 PL_tmps_floor = -1; 657 PL_tmps_floor = -1;
500 PL_tmps_ix = -1; 658 PL_tmps_ix = -1;
501 PL_tmps_max = 96; 659 PL_tmps_max = 32;
502 660
503 New(54,PL_markstack,16,I32); 661 New(54,PL_markstack,16,I32);
504 PL_markstack_ptr = PL_markstack; 662 PL_markstack_ptr = PL_markstack;
505 PL_markstack_max = PL_markstack + 16; 663 PL_markstack_max = PL_markstack + 16;
506 664
507#ifdef SET_MARK_OFFSET 665#ifdef SET_MARK_OFFSET
508 SET_MARK_OFFSET; 666 SET_MARK_OFFSET;
509#endif 667#endif
510 668
511 New(54,PL_scopestack,16,I32); 669 New(54,PL_scopestack,8,I32);
512 PL_scopestack_ix = 0; 670 PL_scopestack_ix = 0;
513 PL_scopestack_max = 16; 671 PL_scopestack_max = 8;
514 672
515 New(54,PL_savestack,96,ANY); 673 New(54,PL_savestack,24,ANY);
516 PL_savestack_ix = 0; 674 PL_savestack_ix = 0;
517 PL_savestack_max = 96; 675 PL_savestack_max = 24;
518 676
677#if !PERL_VERSION_ATLEAST (5,10,0)
519 New(54,PL_retstack,8,OP*); 678 New(54,PL_retstack,4,OP*);
520 PL_retstack_ix = 0; 679 PL_retstack_ix = 0;
521 PL_retstack_max = 8; 680 PL_retstack_max = 4;
522 681#endif
523 UNLOCK;
524} 682}
683#endif
525 684
526/* 685/*
527 * destroy the stacks, the callchain etc... 686 * destroy the stacks, the callchain etc...
528 */ 687 */
529STATIC void 688static void
530destroy_stacks(pTHX) 689coro_destruct_stacks (pTHX)
531{ 690{
532 if (!IN_DESTRUCT)
533 {
534 /* is this ugly, I ask? */
535 LEAVE_SCOPE (0);
536
537 /* sure it is, but more important: is it correct?? :/ */
538 FREETMPS;
539
540 /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/
541 }
542
543 while (PL_curstackinfo->si_next) 691 while (PL_curstackinfo->si_next)
544 PL_curstackinfo = PL_curstackinfo->si_next; 692 PL_curstackinfo = PL_curstackinfo->si_next;
545 693
546 while (PL_curstackinfo) 694 while (PL_curstackinfo)
547 { 695 {
548 PERL_SI *p = PL_curstackinfo->si_prev; 696 PERL_SI *p = PL_curstackinfo->si_prev;
549 697
550 { /*D*//*remove*/
551 dSP;
552 SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
553 PUTBACK; /* possibly superfluous */
554 }
555
556 if (!IN_DESTRUCT) 698 if (!IN_DESTRUCT)
557 {
558 dounwind (-1);/*D*//*remove*/
559 SvREFCNT_dec (PL_curstackinfo->si_stack); 699 SvREFCNT_dec (PL_curstackinfo->si_stack);
560 }
561 700
562 Safefree (PL_curstackinfo->si_cxstack); 701 Safefree (PL_curstackinfo->si_cxstack);
563 Safefree (PL_curstackinfo); 702 Safefree (PL_curstackinfo);
564 PL_curstackinfo = p; 703 PL_curstackinfo = p;
565 } 704 }
566 705
567 Safefree (PL_tmps_stack); 706 Safefree (PL_tmps_stack);
568 Safefree (PL_markstack); 707 Safefree (PL_markstack);
569 Safefree (PL_scopestack); 708 Safefree (PL_scopestack);
570 Safefree (PL_savestack); 709 Safefree (PL_savestack);
710#if !PERL_VERSION_ATLEAST (5,10,0)
571 Safefree (PL_retstack); 711 Safefree (PL_retstack);
572}
573
574static void
575allocate_stack (Coro__State ctx, int alloc)
576{
577 coro_stack *stack;
578
579 New (0, stack, 1, coro_stack);
580
581 stack->refcnt = 1;
582 stack->usecnt = 1;
583 stack->gencnt = ctx->gencnt = 0;
584
585 if (alloc)
586 {
587#if HAVE_MMAP
588 stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */
589 stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
590 if (stack->sptr == (void *)-1)
591#endif 712#endif
713}
714
715#define CORO_RSS \
716 rss += sizeof (SYM (curstackinfo)); \
717 rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \
718 rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \
719 rss += SYM (tmps_max) * sizeof (SV *); \
720 rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \
721 rss += SYM (scopestack_max) * sizeof (I32); \
722 rss += SYM (savestack_max) * sizeof (ANY);
723
724static size_t
725coro_rss (pTHX_ struct coro *coro)
726{
727 size_t rss = sizeof (*coro);
728
729 if (coro->mainstack)
730 {
731 if (coro->flags & CF_RUNNING)
592 { 732 {
593 /*FIXME*//*D*//* reasonable stack size! */ 733 #define SYM(sym) PL_ ## sym
594 stack->ssize = - (8192 * sizeof (long)); 734 CORO_RSS;
595 New (0, stack->sptr, 8192, long); 735 #undef SYM
596 } 736 }
597 }
598 else 737 else
599 stack->sptr = 0;
600
601 ctx->stack = stack;
602}
603
604static void
605deallocate_stack (Coro__State ctx)
606{
607 coro_stack *stack = ctx->stack;
608
609 ctx->stack = 0;
610
611 if (stack)
612 {
613 if (!--stack->refcnt)
614 { 738 {
615#ifdef HAVE_MMAP 739 #define SYM(sym) coro->slot->sym
616 if (stack->ssize > 0 && stack->sptr) 740 CORO_RSS;
617 munmap (stack->sptr, stack->ssize); 741 #undef SYM
618 else
619#endif
620 Safefree (stack->sptr);
621
622 Safefree (stack);
623 } 742 }
624 else if (ctx->gencnt == stack->gencnt) 743 }
625 --stack->usecnt; 744
745 return rss;
746}
747
748/** coroutine stack handling ************************************************/
749
750static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
751static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
752static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
753
754/* apparently < 5.8.8 */
755#ifndef MgPV_nolen_const
756#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
757 SvPV_nolen((SV*)((mg)->mg_ptr)) : \
758 (const char*)(mg)->mg_ptr)
759#endif
760
761/*
762 * This overrides the default magic get method of %SIG elements.
763 * The original one doesn't provide for reading back of PL_diehook/PL_warnhook
764 * and instead of tryign to save and restore the hash elements, we just provide
765 * readback here.
766 * We only do this when the hook is != 0, as they are often set to 0 temporarily,
767 * not expecting this to actually change the hook. This is a potential problem
768 * when a schedule happens then, but we ignore this.
769 */
770static int
771coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
772{
773 const char *s = MgPV_nolen_const (mg);
774
775 if (*s == '_')
626 } 776 {
627} 777 SV **svp = 0;
628 778
779 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
780 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
781
782 if (svp)
783 {
784 sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
785 return 0;
786 }
787 }
788
789 return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
790}
791
629static void 792static int
630setup_coro (void *arg) 793coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
794{
795 const char *s = MgPV_nolen_const (mg);
796
797 if (*s == '_')
798 {
799 SV **svp = 0;
800
801 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
802 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
803
804 if (svp)
805 {
806 SV *old = *svp;
807 *svp = 0;
808 SvREFCNT_dec (old);
809 return 0;
810 }
811 }
812
813 return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
814}
815
816static int
817coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
818{
819 const char *s = MgPV_nolen_const (mg);
820
821 if (*s == '_')
822 {
823 SV **svp = 0;
824
825 if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
826 if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
827
828 if (svp)
829 {
830 SV *old = *svp;
831 *svp = newSVsv (sv);
832 SvREFCNT_dec (old);
833 return 0;
834 }
835 }
836
837 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
838}
839
840static void
841prepare_nop (pTHX_ struct coro_transfer_args *ta)
842{
843 /* kind of mega-hacky, but works */
844 ta->next = ta->prev = (struct coro *)ta;
845}
846
847static int
848slf_check_nop (pTHX_ struct CoroSLF *frame)
849{
850 return 0;
851}
852
853static int
854slf_check_repeat (pTHX_ struct CoroSLF *frame)
855{
856 return 1;
857}
858
859static UNOP coro_setup_op;
860
861static void NOINLINE /* noinline to keep it out of the transfer fast path */
862coro_setup (pTHX_ struct coro *coro)
631{ 863{
632 /* 864 /*
633 * emulate part of the perl startup here. 865 * emulate part of the perl startup here.
634 */ 866 */
635 dTHX;
636 dSP;
637 Coro__State ctx = (Coro__State)arg;
638 SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE);
639
640 coro_init_stacks (aTHX); 867 coro_init_stacks (aTHX);
641 /*PL_curcop = 0;*/ 868
642 /*PL_in_eval = PL_in_eval;*/ /* inherit */ 869 PL_runops = RUNOPS_DEFAULT;
870 PL_curcop = &PL_compiling;
871 PL_in_eval = EVAL_NULL;
872 PL_comppad = 0;
873 PL_comppad_name = 0;
874 PL_comppad_name_fill = 0;
875 PL_comppad_name_floor = 0;
876 PL_curpm = 0;
877 PL_curpad = 0;
878 PL_localizing = 0;
879 PL_dirty = 0;
880 PL_restartop = 0;
881#if PERL_VERSION_ATLEAST (5,10,0)
882 PL_parser = 0;
883#endif
884 PL_hints = 0;
885
886 /* recreate the die/warn hooks */
887 PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
888 PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
889
890 GvSV (PL_defgv) = newSV (0);
891 GvAV (PL_defgv) = coro->args; coro->args = 0;
892 GvSV (PL_errgv) = newSV (0);
893 GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
894 GvHV (PL_hintgv) = 0;
895 PL_rs = newSVsv (GvSV (irsgv));
896 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
897
898 {
899 dSP;
900 UNOP myop;
901
902 Zero (&myop, 1, UNOP);
903 myop.op_next = Nullop;
904 myop.op_type = OP_ENTERSUB;
905 myop.op_flags = OPf_WANT_VOID;
906
907 PUSHMARK (SP);
908 PUSHs ((SV *)coro->startcv);
909 PUTBACK;
910 PL_op = (OP *)&myop;
911 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
912 }
913
914 /* this newly created coroutine might be run on an existing cctx which most
915 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
916 */
917 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
918 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
919
920 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
921 coro_setup_op.op_next = PL_op;
922 coro_setup_op.op_type = OP_ENTERSUB;
923 coro_setup_op.op_ppaddr = pp_slf;
924 /* no flags etc. required, as an init function won't be called */
925
926 PL_op = (OP *)&coro_setup_op;
927
928 /* copy throw, in case it was set before coro_setup */
929 CORO_THROW = coro->except;
930}
931
932static void
933coro_destruct (pTHX_ struct coro *coro)
934{
935 if (!IN_DESTRUCT)
936 {
937 /* restore all saved variables and stuff */
938 LEAVE_SCOPE (0);
939 assert (PL_tmps_floor == -1);
940
941 /* free all temporaries */
942 FREETMPS;
943 assert (PL_tmps_ix == -1);
944
945 /* unwind all extra stacks */
946 POPSTACK_TO (PL_mainstack);
947
948 /* unwind main stack */
949 dounwind (-1);
950 }
951
952 SvREFCNT_dec (GvSV (PL_defgv));
643 SvREFCNT_dec (GvAV (PL_defgv)); 953 SvREFCNT_dec (GvAV (PL_defgv));
644 GvAV (PL_defgv) = ctx->args; ctx->args = 0; 954 SvREFCNT_dec (GvSV (PL_errgv));
955 SvREFCNT_dec (PL_defoutgv);
956 SvREFCNT_dec (PL_rs);
957 SvREFCNT_dec (GvSV (irsgv));
958 SvREFCNT_dec (GvHV (PL_hintgv));
645 959
646 SPAGAIN; 960 SvREFCNT_dec (PL_diehook);
961 SvREFCNT_dec (PL_warnhook);
962
963 SvREFCNT_dec (coro->saved_deffh);
964 SvREFCNT_dec (coro->rouse_cb);
965 SvREFCNT_dec (coro->invoke_cb);
966 SvREFCNT_dec (coro->invoke_av);
647 967
968 coro_destruct_stacks (aTHX);
969}
970
971INLINE void
972free_coro_mortal (pTHX)
973{
974 if (expect_true (coro_mortal))
975 {
976 SvREFCNT_dec (coro_mortal);
977 coro_mortal = 0;
978 }
979}
980
981static int
982runops_trace (pTHX)
983{
984 COP *oldcop = 0;
985 int oldcxix = -2;
986
987 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
988 {
989 PERL_ASYNC_CHECK ();
990
991 if (cctx_current->flags & CC_TRACE_ALL)
992 {
993 if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
994 {
995 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
996 SV **bot, **top;
997 AV *av = newAV (); /* return values */
998 SV **cb;
999 dSP;
1000
1001 GV *gv = CvGV (cx->blk_sub.cv);
1002 SV *fullname = sv_2mortal (newSV (0));
1003 if (isGV (gv))
1004 gv_efullname3 (fullname, gv, 0);
1005
1006 bot = PL_stack_base + cx->blk_oldsp + 1;
1007 top = cx->blk_gimme == G_ARRAY ? SP + 1
1008 : cx->blk_gimme == G_SCALAR ? bot + 1
1009 : bot;
1010
1011 av_extend (av, top - bot);
1012 while (bot < top)
1013 av_push (av, SvREFCNT_inc_NN (*bot++));
1014
1015 PL_runops = RUNOPS_DEFAULT;
1016 ENTER;
1017 SAVETMPS;
1018 EXTEND (SP, 3);
1019 PUSHMARK (SP);
1020 PUSHs (&PL_sv_no);
1021 PUSHs (fullname);
1022 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
1023 PUTBACK;
1024 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1025 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1026 SPAGAIN;
1027 FREETMPS;
1028 LEAVE;
1029 PL_runops = runops_trace;
1030 }
1031
1032 if (oldcop != PL_curcop)
1033 {
1034 oldcop = PL_curcop;
1035
1036 if (PL_curcop != &PL_compiling)
1037 {
1038 SV **cb;
1039
1040 if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1041 {
1042 PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1043
1044 if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1045 {
1046 dSP;
1047 GV *gv = CvGV (cx->blk_sub.cv);
1048 SV *fullname = sv_2mortal (newSV (0));
1049
1050 if (isGV (gv))
1051 gv_efullname3 (fullname, gv, 0);
1052
1053 PL_runops = RUNOPS_DEFAULT;
1054 ENTER;
1055 SAVETMPS;
1056 EXTEND (SP, 3);
1057 PUSHMARK (SP);
1058 PUSHs (&PL_sv_yes);
1059 PUSHs (fullname);
1060 PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
1061 PUTBACK;
1062 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
1063 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1064 SPAGAIN;
1065 FREETMPS;
1066 LEAVE;
1067 PL_runops = runops_trace;
1068 }
1069
1070 oldcxix = cxstack_ix;
1071 }
1072
1073 if (cctx_current->flags & CC_TRACE_LINE)
1074 {
1075 dSP;
1076
1077 PL_runops = RUNOPS_DEFAULT;
1078 ENTER;
1079 SAVETMPS;
1080 EXTEND (SP, 3);
1081 PL_runops = RUNOPS_DEFAULT;
1082 PUSHMARK (SP);
1083 PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
1084 PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
1085 PUTBACK;
1086 cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
1087 if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1088 SPAGAIN;
1089 FREETMPS;
1090 LEAVE;
1091 PL_runops = runops_trace;
1092 }
1093 }
1094 }
1095 }
1096 }
1097
1098 TAINT_NOT;
1099 return 0;
1100}
1101
1102static struct CoroSLF cctx_ssl_frame;
1103
1104static void
1105slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1106{
1107 ta->prev = 0;
1108}
1109
1110static int
1111slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1112{
1113 *frame = cctx_ssl_frame;
1114
1115 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1116}
1117
1118/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1119static void NOINLINE
1120cctx_prepare (pTHX)
1121{
1122 PL_top_env = &PL_start_env;
1123
1124 if (cctx_current->flags & CC_TRACE)
1125 PL_runops = runops_trace;
1126
1127 /* we already must be executing an SLF op, there is no other valid way
1128 * that can lead to creation of a new cctx */
1129 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1130 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1131
1132 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1133 cctx_ssl_frame = slf_frame;
1134
1135 slf_frame.prepare = slf_prepare_set_stacklevel;
1136 slf_frame.check = slf_check_set_stacklevel;
1137}
1138
1139/* the tail of transfer: execute stuff we can only do after a transfer */
1140INLINE void
1141transfer_tail (pTHX)
1142{
1143 free_coro_mortal (aTHX);
1144}
1145
1146/*
1147 * this is a _very_ stripped down perl interpreter ;)
1148 */
1149static void
1150cctx_run (void *arg)
1151{
1152#ifdef USE_ITHREADS
1153# if CORO_PTHREAD
1154 PERL_SET_CONTEXT (coro_thx);
1155# endif
1156#endif
1157 {
1158 dTHX;
1159
1160 /* normally we would need to skip the entersub here */
1161 /* not doing so will re-execute it, which is exactly what we want */
1162 /* PL_nop = PL_nop->op_next */
1163
1164 /* inject a fake subroutine call to cctx_init */
1165 cctx_prepare (aTHX);
1166
1167 /* cctx_run is the alternative tail of transfer() */
1168 transfer_tail (aTHX);
1169
1170 /* somebody or something will hit me for both perl_run and PL_restartop */
1171 PL_restartop = PL_op;
1172 perl_run (PL_curinterp);
1173 /*
1174 * Unfortunately, there is no way to get at the return values of the
1175 * coro body here, as perl_run destroys these
1176 */
1177
1178 /*
1179 * If perl-run returns we assume exit() was being called or the coro
1180 * fell off the end, which seems to be the only valid (non-bug)
1181 * reason for perl_run to return. We try to exit by jumping to the
1182 * bootstrap-time "top" top_env, as we cannot restore the "main"
1183 * coroutine as Coro has no such concept
1184 */
1185 PL_top_env = main_top_env;
1186 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1187 }
1188}
1189
1190static coro_cctx *
1191cctx_new ()
1192{
1193 coro_cctx *cctx;
1194
1195 ++cctx_count;
1196 New (0, cctx, 1, coro_cctx);
1197
1198 cctx->gen = cctx_gen;
1199 cctx->flags = 0;
1200 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1201
1202 return cctx;
1203}
1204
1205/* create a new cctx only suitable as source */
1206static coro_cctx *
1207cctx_new_empty ()
1208{
1209 coro_cctx *cctx = cctx_new ();
1210
1211 cctx->sptr = 0;
1212 coro_create (&cctx->cctx, 0, 0, 0, 0);
1213
1214 return cctx;
1215}
1216
1217/* create a new cctx suitable as destination/running a perl interpreter */
1218static coro_cctx *
1219cctx_new_run ()
1220{
1221 coro_cctx *cctx = cctx_new ();
1222 void *stack_start;
1223 size_t stack_size;
1224
1225#if HAVE_MMAP
1226 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1227 /* mmap supposedly does allocate-on-write for us */
1228 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1229
1230 if (cctx->sptr != (void *)-1)
1231 {
1232 #if CORO_STACKGUARD
1233 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1234 #endif
1235 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1236 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1237 cctx->flags |= CC_MAPPED;
1238 }
1239 else
1240#endif
1241 {
1242 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1243 New (0, cctx->sptr, cctx_stacksize, long);
1244
1245 if (!cctx->sptr)
1246 {
1247 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1248 _exit (EXIT_FAILURE);
1249 }
1250
1251 stack_start = cctx->sptr;
1252 stack_size = cctx->ssize;
1253 }
1254
1255 #if CORO_USE_VALGRIND
1256 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1257 #endif
1258
1259 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1260
1261 return cctx;
1262}
1263
1264static void
1265cctx_destroy (coro_cctx *cctx)
1266{
1267 if (!cctx)
1268 return;
1269
1270 assert (cctx != cctx_current);//D temporary
1271
1272 --cctx_count;
1273 coro_destroy (&cctx->cctx);
1274
1275 /* coro_transfer creates new, empty cctx's */
648 if (ctx->stack) 1276 if (cctx->sptr)
1277 {
1278 #if CORO_USE_VALGRIND
1279 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1280 #endif
1281
1282#if HAVE_MMAP
1283 if (cctx->flags & CC_MAPPED)
1284 munmap (cctx->sptr, cctx->ssize);
1285 else
1286#endif
1287 Safefree (cctx->sptr);
649 { 1288 }
650 ctx->cursp = 0;
651 1289
1290 Safefree (cctx);
1291}
1292
1293/* wether this cctx should be destructed */
1294#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1295
1296static coro_cctx *
1297cctx_get (pTHX)
1298{
1299 while (expect_true (cctx_first))
1300 {
1301 coro_cctx *cctx = cctx_first;
1302 cctx_first = cctx->next;
1303 --cctx_idle;
1304
1305 if (expect_true (!CCTX_EXPIRED (cctx)))
1306 return cctx;
1307
1308 cctx_destroy (cctx);
1309 }
1310
1311 return cctx_new_run ();
1312}
1313
1314static void
1315cctx_put (coro_cctx *cctx)
1316{
1317 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1318
1319 /* free another cctx if overlimit */
1320 if (expect_false (cctx_idle >= cctx_max_idle))
1321 {
1322 coro_cctx *first = cctx_first;
1323 cctx_first = first->next;
1324 --cctx_idle;
1325
1326 cctx_destroy (first);
1327 }
1328
1329 ++cctx_idle;
1330 cctx->next = cctx_first;
1331 cctx_first = cctx;
1332}
1333
1334/** coroutine switching *****************************************************/
1335
1336static void
1337transfer_check (pTHX_ struct coro *prev, struct coro *next)
1338{
1339 /* TODO: throwing up here is considered harmful */
1340
1341 if (expect_true (prev != next))
1342 {
1343 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1344 croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1345
1346 if (expect_false (next->flags & CF_RUNNING))
1347 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1348
1349 if (expect_false (next->flags & CF_DESTROYED))
1350 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1351
1352#if !PERL_VERSION_ATLEAST (5,10,0)
1353 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1354 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1355#endif
1356 }
1357}
1358
1359/* always use the TRANSFER macro */
1360static void NOINLINE /* noinline so we have a fixed stackframe */
1361transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1362{
1363 dSTACKLEVEL;
1364
1365 /* sometimes transfer is only called to set idle_sp */
1366 if (expect_false (!prev))
1367 {
1368 cctx_current->idle_sp = STACKLEVEL;
1369 assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1370 }
1371 else if (expect_true (prev != next))
1372 {
1373 coro_cctx *cctx_prev;
1374
1375 if (expect_false (prev->flags & CF_NEW))
1376 {
1377 /* create a new empty/source context */
1378 prev->flags &= ~CF_NEW;
1379 prev->flags |= CF_RUNNING;
1380 }
1381
1382 prev->flags &= ~CF_RUNNING;
1383 next->flags |= CF_RUNNING;
1384
1385 /* first get rid of the old state */
1386 save_perl (aTHX_ prev);
1387
1388 if (expect_false (next->flags & CF_NEW))
1389 {
1390 /* need to start coroutine */
1391 next->flags &= ~CF_NEW;
1392 /* setup coroutine call */
1393 coro_setup (aTHX_ next);
1394 }
1395 else
1396 load_perl (aTHX_ next);
1397
1398 assert (!prev->cctx);//D temporary
1399
1400 /* possibly untie and reuse the cctx */
1401 if (expect_true (
1402 cctx_current->idle_sp == STACKLEVEL
1403 && !(cctx_current->flags & CC_TRACE)
1404 && !force_cctx
1405 ))
1406 {
1407 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1408 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1409
1410 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1411 /* without this the next cctx_get might destroy the running cctx while still in use */
1412 if (expect_false (CCTX_EXPIRED (cctx_current)))
1413 if (expect_true (!next->cctx))
1414 next->cctx = cctx_get (aTHX);
1415
1416 cctx_put (cctx_current);
1417 }
1418 else
1419 prev->cctx = cctx_current;
1420
1421 ++next->usecount;
1422
1423 cctx_prev = cctx_current;
1424 cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1425
1426 next->cctx = 0;
1427
1428 if (expect_false (cctx_prev != cctx_current))
1429 {
1430 cctx_prev->top_env = PL_top_env;
1431 PL_top_env = cctx_current->top_env;
1432 coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1433 }
1434
1435 transfer_tail (aTHX);
1436 }
1437}
1438
1439#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1440#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1441
1442/** high level stuff ********************************************************/
1443
1444static int
1445coro_state_destroy (pTHX_ struct coro *coro)
1446{
1447 if (coro->flags & CF_DESTROYED)
1448 return 0;
1449
1450 if (coro->on_destroy)
1451 coro->on_destroy (aTHX_ coro);
1452
1453 coro->flags |= CF_DESTROYED;
1454
1455 if (coro->flags & CF_READY)
1456 {
1457 /* reduce nready, as destroying a ready coro effectively unreadies it */
1458 /* alternative: look through all ready queues and remove the coro */
1459 --coro_nready;
1460 }
1461 else
1462 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1463
1464 if (coro->mainstack && coro->mainstack != main_mainstack)
1465 {
1466 struct coro temp;
1467
1468 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1469
1470 save_perl (aTHX_ &temp);
1471 load_perl (aTHX_ coro);
1472
1473 coro_destruct (aTHX_ coro);
1474
1475 load_perl (aTHX_ &temp);
1476
1477 coro->slot = 0;
1478 }
1479
1480 cctx_destroy (coro->cctx);
1481 SvREFCNT_dec (coro->startcv);
1482 SvREFCNT_dec (coro->args);
1483 SvREFCNT_dec (CORO_THROW);
1484
1485 if (coro->next) coro->next->prev = coro->prev;
1486 if (coro->prev) coro->prev->next = coro->next;
1487 if (coro == coro_first) coro_first = coro->next;
1488
1489 return 1;
1490}
1491
1492static int
1493coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1494{
1495 struct coro *coro = (struct coro *)mg->mg_ptr;
1496 mg->mg_ptr = 0;
1497
1498 coro->hv = 0;
1499
1500 if (--coro->refcnt < 0)
1501 {
1502 coro_state_destroy (aTHX_ coro);
1503 Safefree (coro);
1504 }
1505
1506 return 0;
1507}
1508
1509static int
1510coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1511{
1512 struct coro *coro = (struct coro *)mg->mg_ptr;
1513
1514 ++coro->refcnt;
1515
1516 return 0;
1517}
1518
1519static MGVTBL coro_state_vtbl = {
1520 0, 0, 0, 0,
1521 coro_state_free,
1522 0,
1523#ifdef MGf_DUP
1524 coro_state_dup,
1525#else
1526# define MGf_DUP 0
1527#endif
1528};
1529
1530static void
1531prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1532{
1533 ta->prev = SvSTATE (prev_sv);
1534 ta->next = SvSTATE (next_sv);
1535 TRANSFER_CHECK (*ta);
1536}
1537
1538static void
1539api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1540{
1541 struct coro_transfer_args ta;
1542
1543 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1544 TRANSFER (ta, 1);
1545}
1546
1547/*****************************************************************************/
1548/* gensub: simple closure generation utility */
1549
1550#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1551
1552/* create a closure from XS, returns a code reference */
1553/* the arg can be accessed via GENSUB_ARG from the callback */
1554/* the callback must use dXSARGS/XSRETURN */
1555static SV *
1556gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1557{
1558 CV *cv = (CV *)newSV (0);
1559
1560 sv_upgrade ((SV *)cv, SVt_PVCV);
1561
1562 CvANON_on (cv);
1563 CvISXSUB_on (cv);
1564 CvXSUB (cv) = xsub;
1565 GENSUB_ARG = arg;
1566
1567 return newRV_noinc ((SV *)cv);
1568}
1569
1570/** Coro ********************************************************************/
1571
1572INLINE void
1573coro_enq (pTHX_ struct coro *coro)
1574{
1575 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1576}
1577
1578INLINE SV *
1579coro_deq (pTHX)
1580{
1581 int prio;
1582
1583 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1584 if (AvFILLp (coro_ready [prio]) >= 0)
1585 return av_shift (coro_ready [prio]);
1586
1587 return 0;
1588}
1589
1590static int
1591api_ready (pTHX_ SV *coro_sv)
1592{
1593 struct coro *coro;
1594 SV *sv_hook;
1595 void (*xs_hook)(void);
1596
1597 coro = SvSTATE (coro_sv);
1598
1599 if (coro->flags & CF_READY)
1600 return 0;
1601
1602 coro->flags |= CF_READY;
1603
1604 sv_hook = coro_nready ? 0 : coro_readyhook;
1605 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1606
1607 coro_enq (aTHX_ coro);
1608 ++coro_nready;
1609
1610 if (sv_hook)
1611 {
1612 dSP;
1613
1614 ENTER;
1615 SAVETMPS;
1616
652 PUSHMARK(SP); 1617 PUSHMARK (SP);
653 PUTBACK; 1618 PUTBACK;
654 (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); 1619 call_sv (sv_hook, G_VOID | G_DISCARD);
655 1620
656 if (SvTRUE (ERRSV)) 1621 FREETMPS;
657 croak (NULL); 1622 LEAVE;
658 else
659 croak ("FATAL: CCTXT coroutine returned!");
660 }
661 else
662 { 1623 }
663 UNOP myop;
664 1624
665 PL_op = (OP *)&myop; 1625 if (xs_hook)
1626 xs_hook ();
666 1627
667 Zero(&myop, 1, UNOP); 1628 return 1;
668 myop.op_next = Nullop; 1629}
669 myop.op_flags = OPf_WANT_VOID;
670 1630
671 PUSHMARK(SP); 1631static int
672 XPUSHs (sub_init); 1632api_is_ready (pTHX_ SV *coro_sv)
673 /* 1633{
674 * the next line is slightly wrong, as PL_op->op_next 1634 return !!(SvSTATE (coro_sv)->flags & CF_READY);
675 * is actually being executed so we skip the first op. 1635}
676 * that doesn't matter, though, since it is only
677 * pp_nextstate and we never return...
678 * ah yes, and I don't care anyways ;)
679 */
680 PUTBACK;
681 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
682 SPAGAIN;
683 1636
684 ENTER; /* necessary e.g. for dounwind */ 1637/* expects to own a reference to next->hv */
1638INLINE void
1639prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1640{
1641 SV *prev_sv = SvRV (coro_current);
1642
1643 ta->prev = SvSTATE_hv (prev_sv);
1644 ta->next = next;
1645
1646 TRANSFER_CHECK (*ta);
1647
1648 SvRV_set (coro_current, (SV *)next->hv);
1649
1650 free_coro_mortal (aTHX);
1651 coro_mortal = prev_sv;
1652}
1653
1654static void
1655prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1656{
1657 for (;;)
685 } 1658 {
686} 1659 SV *next_sv = coro_deq (aTHX);
687 1660
688static void 1661 if (expect_true (next_sv))
689continue_coro (void *arg)
690{
691 /*
692 * this is a _very_ stripped down perl interpreter ;)
693 */
694 dTHX;
695 Coro__State ctx = (Coro__State)arg;
696 JMPENV coro_start_env;
697
698 PL_top_env = &ctx->start_env;
699
700 ctx->cursp = 0;
701 PL_op = PL_op->op_next;
702 CALLRUNOPS(aTHX);
703
704 abort ();
705}
706
707STATIC void
708transfer (pTHX_ struct coro *prev, struct coro *next, int flags)
709{
710 dSTACKLEVEL;
711
712 if (prev != next)
713 {
714 if (next->mainstack)
715 { 1662 {
716 LOCK; 1663 struct coro *next = SvSTATE_hv (next_sv);
717 SAVE (prev, flags);
718 LOAD (next);
719 UNLOCK;
720 1664
721 /* mark this state as in-use */ 1665 /* cannot transfer to destroyed coros, skip and look for next */
722 next->mainstack = 0; 1666 if (expect_false (next->flags & CF_DESTROYED))
723 next->tmps_ix = -2; 1667 SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */
724 1668 else
725 /* stacklevel changed? if yes, grab the stack for us! */
726 if (flags & TRANSFER_SAVE_CCTXT)
727 { 1669 {
728 if (!prev->stack) 1670 next->flags &= ~CF_READY;
729 allocate_stack (prev, 0); 1671 --coro_nready;
730 else if (prev->cursp != stacklevel 1672
731 && prev->stack->usecnt > 1) 1673 prepare_schedule_to (aTHX_ ta, next);
732 { 1674 break;
733 prev->gencnt = ++prev->stack->gencnt;
734 prev->stack->usecnt = 1;
735 }
736
737 /* has our stack been invalidated? */
738 if (next->stack && next->stack->gencnt != next->gencnt)
739 {
740 deallocate_stack (next);
741 allocate_stack (next, 1);
742 coro_create (&(next->stack->cctx),
743 continue_coro, (void *)next,
744 next->stack->sptr, labs (next->stack->ssize));
745 }
746
747 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
748 prev->cursp = stacklevel;
749 /* don't add any code here */
750 } 1675 }
751 else
752 next->cursp = stacklevel;
753 } 1676 }
754 else if (next->tmps_ix == -2)
755 croak ("tried to transfer to running coroutine");
756 else 1677 else
757 { 1678 {
758 LOCK; 1679 /* nothing to schedule: call the idle handler */
759 SAVE (prev, -1); /* first get rid of the old state */ 1680 if (SvROK (sv_idle)
760 UNLOCK; 1681 && SvOBJECT (SvRV (sv_idle)))
761
762 if (flags & TRANSFER_SAVE_CCTXT)
763 { 1682 {
764 if (!prev->stack) 1683 ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
765 allocate_stack (prev, 0); 1684 api_ready (aTHX_ SvRV (sv_idle));
766 1685 --coro_nready;
767 if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
768 {
769 PL_top_env = &next->start_env;
770
771 setup_coro (next);
772 next->cursp = stacklevel;
773
774 prev->stack->refcnt++;
775 prev->stack->usecnt++;
776 next->stack = prev->stack;
777 next->gencnt = prev->gencnt;
778 }
779 else
780 {
781 assert (!next->stack);
782 allocate_stack (next, 1);
783 coro_create (&(next->stack->cctx),
784 setup_coro, (void *)next,
785 next->stack->sptr, labs (next->stack->ssize));
786 coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
787 prev->cursp = stacklevel;
788 /* don't add any code here */
789 }
790 } 1686 }
791 else 1687 else
792 { 1688 {
793 setup_coro (next); 1689 dSP;
794 next->cursp = stacklevel; 1690
1691 ENTER;
1692 SAVETMPS;
1693
1694 PUSHMARK (SP);
1695 PUTBACK;
1696 call_sv (sv_idle, G_VOID | G_DISCARD);
1697
1698 FREETMPS;
1699 LEAVE;
795 } 1700 }
796 } 1701 }
797 } 1702 }
1703}
798 1704
799 LOCK; 1705INLINE void
1706prepare_cede (pTHX_ struct coro_transfer_args *ta)
1707{
1708 api_ready (aTHX_ coro_current);
1709 prepare_schedule (aTHX_ ta);
1710}
1711
1712INLINE void
1713prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1714{
1715 SV *prev = SvRV (coro_current);
1716
800 if (coro_mortal) 1717 if (coro_nready)
801 {
802 SvREFCNT_dec (coro_mortal);
803 coro_mortal = 0;
804 } 1718 {
805 UNLOCK; 1719 prepare_schedule (aTHX_ ta);
806} 1720 api_ready (aTHX_ prev);
807
808#define SV_CORO(sv,func) \
809 do { \
810 if (SvROK (sv)) \
811 sv = SvRV (sv); \
812 \
813 if (SvTYPE (sv) == SVt_PVHV) \
814 { \
815 HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \
816 \
817 if (!he) \
818 croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
819 \
820 (sv) = SvRV (HeVAL(he)); \
821 } \
822 \
823 /* must also be changed inside Coro::Cont::yield */ \
824 if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \
825 croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
826 \
827 } while(0)
828
829#define SvSTATE(sv) (struct coro *)SvIV (sv)
830
831static void
832api_transfer(pTHX_ SV *prev, SV *next, int flags)
833{
834 SV_CORO (prev, "Coro::transfer");
835 SV_CORO (next, "Coro::transfer");
836
837 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
838}
839
840/** Coro ********************************************************************/
841
842#define PRIO_MAX 3
843#define PRIO_HIGH 1
844#define PRIO_NORMAL 0
845#define PRIO_LOW -1
846#define PRIO_IDLE -3
847#define PRIO_MIN -4
848
849/* for Coro.pm */
850static GV *coro_current, *coro_idle;
851static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];
852static int coro_nready;
853
854static void
855coro_enq (pTHX_ SV *sv)
856{
857 if (SvTYPE (sv) == SVt_PVHV)
858 { 1721 }
859 SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); 1722 else
860 int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; 1723 prepare_nop (aTHX_ ta);
1724}
861 1725
862 prio = prio > PRIO_MAX ? PRIO_MAX 1726static void
863 : prio < PRIO_MIN ? PRIO_MIN 1727api_schedule (pTHX)
864 : prio; 1728{
1729 struct coro_transfer_args ta;
865 1730
866 av_push (coro_ready [prio - PRIO_MIN], sv); 1731 prepare_schedule (aTHX_ &ta);
867 coro_nready++; 1732 TRANSFER (ta, 1);
1733}
868 1734
1735static void
1736api_schedule_to (pTHX_ SV *coro_sv)
1737{
1738 struct coro_transfer_args ta;
1739 struct coro *next = SvSTATE (coro_sv);
1740
1741 SvREFCNT_inc_NN (coro_sv);
1742 prepare_schedule_to (aTHX_ &ta, next);
1743}
1744
1745static int
1746api_cede (pTHX)
1747{
1748 struct coro_transfer_args ta;
1749
1750 prepare_cede (aTHX_ &ta);
1751
1752 if (expect_true (ta.prev != ta.next))
1753 {
1754 TRANSFER (ta, 1);
869 return; 1755 return 1;
1756 }
1757 else
1758 return 0;
1759}
1760
1761static int
1762api_cede_notself (pTHX)
1763{
1764 if (coro_nready)
1765 {
1766 struct coro_transfer_args ta;
1767
1768 prepare_cede_notself (aTHX_ &ta);
1769 TRANSFER (ta, 1);
1770 return 1;
1771 }
1772 else
1773 return 0;
1774}
1775
1776static void
1777api_trace (pTHX_ SV *coro_sv, int flags)
1778{
1779 struct coro *coro = SvSTATE (coro_sv);
1780
1781 if (coro->flags & CF_RUNNING)
1782 croak ("cannot enable tracing on a running coroutine, caught");
1783
1784 if (flags & CC_TRACE)
1785 {
1786 if (!coro->cctx)
1787 coro->cctx = cctx_new_run ();
1788 else if (!(coro->cctx->flags & CC_TRACE))
1789 croak ("cannot enable tracing on coroutine with custom stack, caught");
1790
1791 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1792 }
1793 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1794 {
1795 coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1796
1797 if (coro->flags & CF_RUNNING)
1798 PL_runops = RUNOPS_DEFAULT;
1799 else
1800 coro->slot->runops = RUNOPS_DEFAULT;
1801 }
1802}
1803
1804static void
1805coro_call_on_destroy (pTHX_ struct coro *coro)
1806{
1807 SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1808 SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1809
1810 if (on_destroyp)
1811 {
1812 AV *on_destroy = (AV *)SvRV (*on_destroyp);
1813
1814 while (AvFILLp (on_destroy) >= 0)
1815 {
1816 dSP; /* don't disturb outer sp */
1817 SV *cb = av_pop (on_destroy);
1818
1819 PUSHMARK (SP);
1820
1821 if (statusp)
1822 {
1823 int i;
1824 AV *status = (AV *)SvRV (*statusp);
1825 EXTEND (SP, AvFILLp (status) + 1);
1826
1827 for (i = 0; i <= AvFILLp (status); ++i)
1828 PUSHs (AvARRAY (status)[i]);
1829 }
1830
1831 PUTBACK;
1832 call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1833 }
1834 }
1835}
1836
1837static void
1838slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1839{
1840 int i;
1841 HV *hv = (HV *)SvRV (coro_current);
1842 AV *av = newAV ();
1843
1844 av_extend (av, items - 1);
1845 for (i = 0; i < items; ++i)
1846 av_push (av, SvREFCNT_inc_NN (arg [i]));
1847
1848 hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1849
1850 av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1851 api_ready (aTHX_ sv_manager);
1852
1853 frame->prepare = prepare_schedule;
1854 frame->check = slf_check_repeat;
1855}
1856
1857/*****************************************************************************/
1858/* async pool handler */
1859
1860static int
1861slf_check_pool_handler (pTHX_ struct CoroSLF *frame)
1862{
1863 HV *hv = (HV *)SvRV (coro_current);
1864 struct coro *coro = (struct coro *)frame->data;
1865
1866 if (!coro->invoke_cb)
1867 return 1; /* loop till we have invoke */
1868 else
1869 {
1870 hv_store (hv, "desc", sizeof ("desc") - 1,
1871 newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1872
1873 coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1874
1875 {
1876 dSP;
1877 XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0;
1878 PUTBACK;
870 } 1879 }
871 1880
872 croak ("Coro::ready tried to enqueue something that is not a coroutine"); 1881 SvREFCNT_dec (GvAV (PL_defgv));
1882 GvAV (PL_defgv) = coro->invoke_av;
1883 coro->invoke_av = 0;
1884
1885 return 0;
1886 }
1887}
1888
1889static void
1890slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1891{
1892 HV *hv = (HV *)SvRV (coro_current);
1893 struct coro *coro = SvSTATE_hv ((SV *)hv);
1894
1895 if (expect_true (coro->saved_deffh))
1896 {
1897 /* subsequent iteration */
1898 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1899 coro->saved_deffh = 0;
1900
1901 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1902 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1903 {
1904 coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);
1905 coro->invoke_av = newAV ();
1906
1907 frame->prepare = prepare_nop;
1908 }
1909 else
1910 {
1911 av_clear (GvAV (PL_defgv));
1912 hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
1913
1914 coro->prio = 0;
1915
1916 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1917 api_trace (aTHX_ coro_current, 0);
1918
1919 frame->prepare = prepare_schedule;
1920 av_push (av_async_pool, SvREFCNT_inc (hv));
1921 }
1922 }
1923 else
1924 {
1925 /* first iteration, simply fall through */
1926 frame->prepare = prepare_nop;
1927 }
1928
1929 frame->check = slf_check_pool_handler;
1930 frame->data = (void *)coro;
1931}
1932
1933/*****************************************************************************/
1934/* rouse callback */
1935
1936#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1937
1938static void
1939coro_rouse_callback (pTHX_ CV *cv)
1940{
1941 dXSARGS;
1942 SV *data = (SV *)GENSUB_ARG;
1943
1944 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1945 {
1946 /* first call, set args */
1947 AV *av = newAV ();
1948 SV *coro = SvRV (data);
1949
1950 SvRV_set (data, (SV *)av);
1951 api_ready (aTHX_ coro);
1952 SvREFCNT_dec (coro);
1953
1954 /* better take a full copy of the arguments */
1955 while (items--)
1956 av_store (av, items, newSVsv (ST (items)));
1957 }
1958
1959 XSRETURN_EMPTY;
1960}
1961
1962static int
1963slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1964{
1965 SV *data = (SV *)frame->data;
1966
1967 if (CORO_THROW)
1968 return 0;
1969
1970 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1971 return 1;
1972
1973 /* now push all results on the stack */
1974 {
1975 dSP;
1976 AV *av = (AV *)SvRV (data);
1977 int i;
1978
1979 EXTEND (SP, AvFILLp (av) + 1);
1980 for (i = 0; i <= AvFILLp (av); ++i)
1981 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1982
1983 /* we have stolen the elements, so ste length to zero and free */
1984 AvFILLp (av) = -1;
1985 av_undef (av);
1986
1987 PUTBACK;
1988 }
1989
1990 return 0;
1991}
1992
1993static void
1994slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1995{
1996 SV *cb;
1997
1998 if (items)
1999 cb = arg [0];
2000 else
2001 {
2002 struct coro *coro = SvSTATE_current;
2003
2004 if (!coro->rouse_cb)
2005 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
2006
2007 cb = sv_2mortal (coro->rouse_cb);
2008 coro->rouse_cb = 0;
2009 }
2010
2011 if (!SvROK (cb)
2012 || SvTYPE (SvRV (cb)) != SVt_PVCV
2013 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2014 croak ("Coro::rouse_wait called with illegal callback argument,");
2015
2016 {
2017 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
2018 SV *data = (SV *)GENSUB_ARG;
2019
2020 frame->data = (void *)data;
2021 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2022 frame->check = slf_check_rouse_wait;
2023 }
873} 2024}
874 2025
875static SV * 2026static SV *
876coro_deq (pTHX_ int min_prio) 2027coro_new_rouse_cb (pTHX)
877{ 2028{
878 int prio = PRIO_MAX - PRIO_MIN; 2029 HV *hv = (HV *)SvRV (coro_current);
2030 struct coro *coro = SvSTATE_hv (hv);
2031 SV *data = newRV_inc ((SV *)hv);
2032 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
879 2033
880 min_prio -= PRIO_MIN; 2034 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
881 if (min_prio < 0) 2035 SvREFCNT_dec (data); /* magicext increases the refcount */
882 min_prio = 0;
883 2036
884 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) 2037 SvREFCNT_dec (coro->rouse_cb);
885 if (av_len (coro_ready[prio]) >= 0) 2038 coro->rouse_cb = SvREFCNT_inc_NN (cb);
2039
2040 return cb;
2041}
2042
2043/*****************************************************************************/
2044/* schedule-like-function opcode (SLF) */
2045
2046static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
2047static const CV *slf_cv;
2048static SV **slf_argv;
2049static int slf_argc, slf_arga; /* count, allocated */
2050static I32 slf_ax; /* top of stack, for restore */
2051
2052/* this restores the stack in the case we patched the entersub, to */
2053/* recreate the stack frame as perl will on following calls */
2054/* since entersub cleared the stack */
2055static OP *
2056pp_restore (pTHX)
2057{
2058 int i;
2059 SV **SP = PL_stack_base + slf_ax;
2060
2061 PUSHMARK (SP);
2062
2063 EXTEND (SP, slf_argc + 1);
2064
2065 for (i = 0; i < slf_argc; ++i)
2066 PUSHs (sv_2mortal (slf_argv [i]));
2067
2068 PUSHs ((SV *)CvGV (slf_cv));
2069
2070 RETURNOP (slf_restore.op_first);
2071}
2072
2073static void
2074slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
2075{
2076 SV **arg = (SV **)slf_frame.data;
2077
2078 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
2079}
2080
2081static void
2082slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2083{
2084 if (items != 2)
2085 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
2086
2087 frame->prepare = slf_prepare_transfer;
2088 frame->check = slf_check_nop;
2089 frame->data = (void *)arg; /* let's hope it will stay valid */
2090}
2091
2092static void
2093slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2094{
2095 frame->prepare = prepare_schedule;
2096 frame->check = slf_check_nop;
2097}
2098
2099static void
2100slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
2101{
2102 struct coro *next = (struct coro *)slf_frame.data;
2103
2104 SvREFCNT_inc_NN (next->hv);
2105 prepare_schedule_to (aTHX_ ta, next);
2106}
2107
2108static void
2109slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2110{
2111 if (!items)
2112 croak ("Coro::schedule_to expects a coroutine argument, caught");
2113
2114 frame->data = (void *)SvSTATE (arg [0]);
2115 frame->prepare = slf_prepare_schedule_to;
2116 frame->check = slf_check_nop;
2117}
2118
2119static void
2120slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2121{
2122 api_ready (aTHX_ SvRV (coro_current));
2123
2124 slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2125}
2126
2127static void
2128slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2129{
2130 frame->prepare = prepare_cede;
2131 frame->check = slf_check_nop;
2132}
2133
2134static void
2135slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2136{
2137 frame->prepare = prepare_cede_notself;
2138 frame->check = slf_check_nop;
2139}
2140
2141/*
2142 * these not obviously related functions are all rolled into one
2143 * function to increase chances that they all will call transfer with the same
2144 * stack offset
2145 * SLF stands for "schedule-like-function".
2146 */
2147static OP *
2148pp_slf (pTHX)
2149{
2150 I32 checkmark; /* mark SP to see how many elements check has pushed */
2151
2152 /* set up the slf frame, unless it has already been set-up */
2153 /* the latter happens when a new coro has been started */
2154 /* or when a new cctx was attached to an existing coroutine */
2155 if (expect_true (!slf_frame.prepare))
2156 {
2157 /* first iteration */
2158 dSP;
2159 SV **arg = PL_stack_base + TOPMARK + 1;
2160 int items = SP - arg; /* args without function object */
2161 SV *gv = *sp;
2162
2163 /* do a quick consistency check on the "function" object, and if it isn't */
2164 /* for us, divert to the real entersub */
2165 if (SvTYPE (gv) != SVt_PVGV
2166 || !GvCV (gv)
2167 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
2168 return PL_ppaddr[OP_ENTERSUB](aTHX);
2169
2170 if (!(PL_op->op_flags & OPf_STACKED))
886 { 2171 {
887 coro_nready--; 2172 /* ampersand-form of call, use @_ instead of stack */
888 return av_shift (coro_ready[prio]); 2173 AV *av = GvAV (PL_defgv);
2174 arg = AvARRAY (av);
2175 items = AvFILLp (av) + 1;
889 } 2176 }
2177
2178 /* now call the init function, which needs to set up slf_frame */
2179 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
2180 (aTHX_ &slf_frame, GvCV (gv), arg, items);
2181
2182 /* pop args */
2183 SP = PL_stack_base + POPMARK;
2184
2185 PUTBACK;
2186 }
2187
2188 /* now that we have a slf_frame, interpret it! */
2189 /* we use a callback system not to make the code needlessly */
2190 /* complicated, but so we can run multiple perl coros from one cctx */
2191
2192 do
2193 {
2194 struct coro_transfer_args ta;
2195
2196 slf_frame.prepare (aTHX_ &ta);
2197 TRANSFER (ta, 0);
2198
2199 checkmark = PL_stack_sp - PL_stack_base;
2200 }
2201 while (slf_frame.check (aTHX_ &slf_frame));
2202
2203 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
2204
2205 /* exception handling */
2206 if (expect_false (CORO_THROW))
2207 {
2208 SV *exception = sv_2mortal (CORO_THROW);
2209
2210 CORO_THROW = 0;
2211 sv_setsv (ERRSV, exception);
2212 croak (0);
2213 }
2214
2215 /* return value handling - mostly like entersub */
2216 /* make sure we put something on the stack in scalar context */
2217 if (GIMME_V == G_SCALAR)
2218 {
2219 dSP;
2220 SV **bot = PL_stack_base + checkmark;
2221
2222 if (sp == bot) /* too few, push undef */
2223 bot [1] = &PL_sv_undef;
2224 else if (sp != bot + 1) /* too many, take last one */
2225 bot [1] = *sp;
2226
2227 SP = bot + 1;
2228
2229 PUTBACK;
2230 }
2231
2232 return NORMAL;
2233}
2234
2235static void
2236api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2237{
2238 int i;
2239 SV **arg = PL_stack_base + ax;
2240 int items = PL_stack_sp - arg + 1;
2241
2242 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2243
2244 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2245 && PL_op->op_ppaddr != pp_slf)
2246 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2247
2248 CvFLAGS (cv) |= CVf_SLF;
2249 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2250 slf_cv = cv;
2251
2252 /* we patch the op, and then re-run the whole call */
2253 /* we have to put the same argument on the stack for this to work */
2254 /* and this will be done by pp_restore */
2255 slf_restore.op_next = (OP *)&slf_restore;
2256 slf_restore.op_type = OP_CUSTOM;
2257 slf_restore.op_ppaddr = pp_restore;
2258 slf_restore.op_first = PL_op;
2259
2260 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2261
2262 if (PL_op->op_flags & OPf_STACKED)
2263 {
2264 if (items > slf_arga)
2265 {
2266 slf_arga = items;
2267 free (slf_argv);
2268 slf_argv = malloc (slf_arga * sizeof (SV *));
2269 }
2270
2271 slf_argc = items;
2272
2273 for (i = 0; i < items; ++i)
2274 slf_argv [i] = SvREFCNT_inc (arg [i]);
2275 }
2276 else
2277 slf_argc = 0;
2278
2279 PL_op->op_ppaddr = pp_slf;
2280 /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2281
2282 PL_op = (OP *)&slf_restore;
2283}
2284
2285/*****************************************************************************/
2286/* PerlIO::cede */
2287
2288typedef struct
2289{
2290 PerlIOBuf base;
2291 NV next, every;
2292} PerlIOCede;
2293
2294static IV
2295PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
2296{
2297 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2298
2299 self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
2300 self->next = nvtime () + self->every;
2301
2302 return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
2303}
2304
2305static SV *
2306PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
2307{
2308 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2309
2310 return newSVnv (self->every);
2311}
2312
2313static IV
2314PerlIOCede_flush (pTHX_ PerlIO *f)
2315{
2316 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
2317 double now = nvtime ();
2318
2319 if (now >= self->next)
2320 {
2321 api_cede (aTHX);
2322 self->next = now + self->every;
2323 }
2324
2325 return PerlIOBuf_flush (aTHX_ f);
2326}
2327
2328static PerlIO_funcs PerlIO_cede =
2329{
2330 sizeof(PerlIO_funcs),
2331 "cede",
2332 sizeof(PerlIOCede),
2333 PERLIO_K_DESTRUCT | PERLIO_K_RAW,
2334 PerlIOCede_pushed,
2335 PerlIOBuf_popped,
2336 PerlIOBuf_open,
2337 PerlIOBase_binmode,
2338 PerlIOCede_getarg,
2339 PerlIOBase_fileno,
2340 PerlIOBuf_dup,
2341 PerlIOBuf_read,
2342 PerlIOBuf_unread,
2343 PerlIOBuf_write,
2344 PerlIOBuf_seek,
2345 PerlIOBuf_tell,
2346 PerlIOBuf_close,
2347 PerlIOCede_flush,
2348 PerlIOBuf_fill,
2349 PerlIOBase_eof,
2350 PerlIOBase_error,
2351 PerlIOBase_clearerr,
2352 PerlIOBase_setlinebuf,
2353 PerlIOBuf_get_base,
2354 PerlIOBuf_bufsiz,
2355 PerlIOBuf_get_ptr,
2356 PerlIOBuf_get_cnt,
2357 PerlIOBuf_set_ptrcnt,
2358};
2359
2360/*****************************************************************************/
2361/* Coro::Semaphore & Coro::Signal */
2362
2363static SV *
2364coro_waitarray_new (pTHX_ int count)
2365{
2366 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2367 AV *av = newAV ();
2368 SV **ary;
2369
2370 /* unfortunately, building manually saves memory */
2371 Newx (ary, 2, SV *);
2372 AvALLOC (av) = ary;
2373 /*AvARRAY (av) = ary;*/
2374 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2375 AvMAX (av) = 1;
2376 AvFILLp (av) = 0;
2377 ary [0] = newSViv (count);
2378
2379 return newRV_noinc ((SV *)av);
2380}
2381
2382/* semaphore */
2383
2384static void
2385coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2386{
2387 SV *count_sv = AvARRAY (av)[0];
2388 IV count = SvIVX (count_sv);
2389
2390 count += adjust;
2391 SvIVX (count_sv) = count;
2392
2393 /* now wake up as many waiters as are expected to lock */
2394 while (count > 0 && AvFILLp (av) > 0)
2395 {
2396 SV *cb;
2397
2398 /* swap first two elements so we can shift a waiter */
2399 AvARRAY (av)[0] = AvARRAY (av)[1];
2400 AvARRAY (av)[1] = count_sv;
2401 cb = av_shift (av);
2402
2403 if (SvOBJECT (cb))
2404 {
2405 api_ready (aTHX_ cb);
2406 --count;
2407 }
2408 else if (SvTYPE (cb) == SVt_PVCV)
2409 {
2410 dSP;
2411 PUSHMARK (SP);
2412 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2413 PUTBACK;
2414 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2415 }
2416
2417 SvREFCNT_dec (cb);
2418 }
2419}
2420
2421static void
2422coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2423{
2424 /* call $sem->adjust (0) to possibly wake up some other waiters */
2425 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2426}
2427
2428static int
2429slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2430{
2431 AV *av = (AV *)frame->data;
2432 SV *count_sv = AvARRAY (av)[0];
2433
2434 /* if we are about to throw, don't actually acquire the lock, just throw */
2435 if (CORO_THROW)
2436 return 0;
2437 else if (SvIVX (count_sv) > 0)
2438 {
2439 SvSTATE_current->on_destroy = 0;
2440
2441 if (acquire)
2442 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2443 else
2444 coro_semaphore_adjust (aTHX_ av, 0);
2445
2446 return 0;
2447 }
2448 else
2449 {
2450 int i;
2451 /* if we were woken up but can't down, we look through the whole */
2452 /* waiters list and only add us if we aren't in there already */
2453 /* this avoids some degenerate memory usage cases */
2454
2455 for (i = 1; i <= AvFILLp (av); ++i)
2456 if (AvARRAY (av)[i] == SvRV (coro_current))
2457 return 1;
2458
2459 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2460 return 1;
2461 }
2462}
2463
2464static int
2465slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2466{
2467 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2468}
2469
2470static int
2471slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2472{
2473 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2474}
2475
2476static void
2477slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2478{
2479 AV *av = (AV *)SvRV (arg [0]);
2480
2481 if (SvIVX (AvARRAY (av)[0]) > 0)
2482 {
2483 frame->data = (void *)av;
2484 frame->prepare = prepare_nop;
2485 }
2486 else
2487 {
2488 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2489
2490 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2491 frame->prepare = prepare_schedule;
2492
2493 /* to avoid race conditions when a woken-up coro gets terminated */
2494 /* we arrange for a temporary on_destroy that calls adjust (0) */
2495 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2496 }
2497}
2498
2499static void
2500slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2501{
2502 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2503 frame->check = slf_check_semaphore_down;
2504}
2505
2506static void
2507slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2508{
2509 if (items >= 2)
2510 {
2511 /* callback form */
2512 AV *av = (AV *)SvRV (arg [0]);
2513 CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);
2514
2515 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2516
2517 if (SvIVX (AvARRAY (av)[0]) > 0)
2518 coro_semaphore_adjust (aTHX_ av, 0);
2519
2520 frame->prepare = prepare_nop;
2521 frame->check = slf_check_nop;
2522 }
2523 else
2524 {
2525 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2526 frame->check = slf_check_semaphore_wait;
2527 }
2528}
2529
2530/* signal */
2531
2532static void
2533coro_signal_wake (pTHX_ AV *av, int count)
2534{
2535 SvIVX (AvARRAY (av)[0]) = 0;
2536
2537 /* now signal count waiters */
2538 while (count > 0 && AvFILLp (av) > 0)
2539 {
2540 SV *cb;
2541
2542 /* swap first two elements so we can shift a waiter */
2543 cb = AvARRAY (av)[0];
2544 AvARRAY (av)[0] = AvARRAY (av)[1];
2545 AvARRAY (av)[1] = cb;
2546
2547 cb = av_shift (av);
2548
2549 api_ready (aTHX_ cb);
2550 sv_setiv (cb, 0); /* signal waiter */
2551 SvREFCNT_dec (cb);
2552
2553 --count;
2554 }
2555}
2556
2557static int
2558slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2559{
2560 /* if we are about to throw, also stop waiting */
2561 return SvROK ((SV *)frame->data) && !CORO_THROW;
2562}
2563
2564static void
2565slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2566{
2567 AV *av = (AV *)SvRV (arg [0]);
2568
2569 if (SvIVX (AvARRAY (av)[0]))
2570 {
2571 SvIVX (AvARRAY (av)[0]) = 0;
2572 frame->prepare = prepare_nop;
2573 frame->check = slf_check_nop;
2574 }
2575 else
2576 {
2577 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2578
2579 av_push (av, waiter);
2580
2581 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2582 frame->prepare = prepare_schedule;
2583 frame->check = slf_check_signal_wait;
2584 }
2585}
2586
2587/*****************************************************************************/
2588/* Coro::AIO */
2589
2590#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2591
2592/* helper storage struct */
2593struct io_state
2594{
2595 int errorno;
2596 I32 laststype; /* U16 in 5.10.0 */
2597 int laststatval;
2598 Stat_t statcache;
2599};
2600
2601static void
2602coro_aio_callback (pTHX_ CV *cv)
2603{
2604 dXSARGS;
2605 AV *state = (AV *)GENSUB_ARG;
2606 SV *coro = av_pop (state);
2607 SV *data_sv = newSV (sizeof (struct io_state));
2608
2609 av_extend (state, items - 1);
2610
2611 sv_upgrade (data_sv, SVt_PV);
2612 SvCUR_set (data_sv, sizeof (struct io_state));
2613 SvPOK_only (data_sv);
2614
2615 {
2616 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2617
2618 data->errorno = errno;
2619 data->laststype = PL_laststype;
2620 data->laststatval = PL_laststatval;
2621 data->statcache = PL_statcache;
2622 }
2623
2624 /* now build the result vector out of all the parameters and the data_sv */
2625 {
2626 int i;
2627
2628 for (i = 0; i < items; ++i)
2629 av_push (state, SvREFCNT_inc_NN (ST (i)));
2630 }
2631
2632 av_push (state, data_sv);
2633
2634 api_ready (aTHX_ coro);
2635 SvREFCNT_dec (coro);
2636 SvREFCNT_dec ((AV *)state);
2637}
2638
2639static int
2640slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2641{
2642 AV *state = (AV *)frame->data;
2643
2644 /* if we are about to throw, return early */
2645 /* this does not cancel the aio request, but at least */
2646 /* it quickly returns */
2647 if (CORO_THROW)
2648 return 0;
2649
2650 /* one element that is an RV? repeat! */
2651 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2652 return 1;
2653
2654 /* restore status */
2655 {
2656 SV *data_sv = av_pop (state);
2657 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2658
2659 errno = data->errorno;
2660 PL_laststype = data->laststype;
2661 PL_laststatval = data->laststatval;
2662 PL_statcache = data->statcache;
2663
2664 SvREFCNT_dec (data_sv);
2665 }
2666
2667 /* push result values */
2668 {
2669 dSP;
2670 int i;
2671
2672 EXTEND (SP, AvFILLp (state) + 1);
2673 for (i = 0; i <= AvFILLp (state); ++i)
2674 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2675
2676 PUTBACK;
2677 }
890 2678
891 return 0; 2679 return 0;
892} 2680}
893 2681
894static void 2682static void
895api_ready (SV *coro) 2683slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
896{ 2684{
897 dTHX; 2685 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
898
899 if (SvROK (coro))
900 coro = SvRV (coro);
901
902 LOCK;
903 coro_enq (aTHX_ SvREFCNT_inc (coro));
904 UNLOCK;
905}
906
907static void
908api_schedule (void)
909{
910 dTHX;
911
912 SV *prev, *next;
913
914 LOCK;
915
916 prev = SvRV (GvSV (coro_current)); 2686 SV *coro_hv = SvRV (coro_current);
917 next = coro_deq (aTHX_ PRIO_MIN); 2687 struct coro *coro = SvSTATE_hv (coro_hv);
918 2688
919 if (!next) 2689 /* put our coroutine id on the state arg */
920 next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); 2690 av_push (state, SvREFCNT_inc_NN (coro_hv));
921 2691
922 /* free this only after the transfer */ 2692 /* first see whether we have a non-zero priority and set it as AIO prio */
923 coro_mortal = prev; 2693 if (coro->prio)
924 SV_CORO (prev, "Coro::schedule"); 2694 {
2695 dSP;
925 2696
926 SvRV (GvSV (coro_current)) = next; 2697 static SV *prio_cv;
2698 static SV *prio_sv;
927 2699
928 SV_CORO (next, "Coro::schedule"); 2700 if (expect_false (!prio_cv))
2701 {
2702 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2703 prio_sv = newSViv (0);
2704 }
929 2705
930 UNLOCK; 2706 PUSHMARK (SP);
2707 sv_setiv (prio_sv, coro->prio);
2708 XPUSHs (prio_sv);
931 2709
932 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), 2710 PUTBACK;
933 TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); 2711 call_sv (prio_cv, G_VOID | G_DISCARD);
934} 2712 }
935 2713
936static void 2714 /* now call the original request */
937api_cede (void) 2715 {
938{ 2716 dSP;
939 dTHX; 2717 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2718 int i;
940 2719
941 LOCK; 2720 PUSHMARK (SP);
942 coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
943 UNLOCK;
944 2721
945 api_schedule (); 2722 /* first push all args to the stack */
946} 2723 EXTEND (SP, items + 1);
947 2724
2725 for (i = 0; i < items; ++i)
2726 PUSHs (arg [i]);
2727
2728 /* now push the callback closure */
2729 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2730
2731 /* now call the AIO function - we assume our request is uncancelable */
2732 PUTBACK;
2733 call_sv ((SV *)req, G_VOID | G_DISCARD);
2734 }
2735
2736 /* now that the requets is going, we loop toll we have a result */
2737 frame->data = (void *)state;
2738 frame->prepare = prepare_schedule;
2739 frame->check = slf_check_aio_req;
2740}
2741
2742static void
2743coro_aio_req_xs (pTHX_ CV *cv)
2744{
2745 dXSARGS;
2746
2747 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2748
2749 XSRETURN_EMPTY;
2750}
2751
2752/*****************************************************************************/
2753
2754#if CORO_CLONE
2755# include "clone.c"
2756#endif
2757
948MODULE = Coro::State PACKAGE = Coro::State 2758MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
949 2759
950PROTOTYPES: ENABLE 2760PROTOTYPES: DISABLE
951 2761
952BOOT: 2762BOOT:
953{ /* {} necessary for stoopid perl-5.6.x */ 2763{
954#ifdef USE_ITHREADS 2764#ifdef USE_ITHREADS
955 MUTEX_INIT (&coro_mutex); 2765# if CORO_PTHREAD
2766 coro_thx = PERL_GET_CONTEXT;
956#endif 2767# endif
2768#endif
2769 BOOT_PAGESIZE;
957 2770
958 ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); 2771 cctx_current = cctx_new_empty ();
959 PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); 2772
2773 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2774 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2775
2776 orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2777 orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
2778 orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
2779
2780 hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
2781 rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
2782 rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
2783
960 coro_state_stash = gv_stashpv ("Coro::State", TRUE); 2784 coro_state_stash = gv_stashpv ("Coro::State", TRUE);
961 2785
962 newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); 2786 newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
963 newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); 2787 newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
964 newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); 2788 newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
965 newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); 2789 newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
966 2790
967 main_mainstack = PL_mainstack; 2791 main_mainstack = PL_mainstack;
2792 main_top_env = PL_top_env;
968 2793
2794 while (main_top_env->je_prev)
2795 main_top_env = main_top_env->je_prev;
2796
2797 {
2798 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2799
2800 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2801 hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2802
2803 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2804 hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2805 }
2806
969 coroapi.ver = CORO_API_VERSION; 2807 coroapi.ver = CORO_API_VERSION;
2808 coroapi.rev = CORO_API_REVISION;
2809
970 coroapi.transfer = api_transfer; 2810 coroapi.transfer = api_transfer;
971}
972 2811
973Coro::State 2812 coroapi.sv_state = SvSTATE_;
974_newprocess(args) 2813 coroapi.execute_slf = api_execute_slf;
975 SV * args 2814 coroapi.prepare_nop = prepare_nop;
976 PROTOTYPE: $ 2815 coroapi.prepare_schedule = prepare_schedule;
2816 coroapi.prepare_cede = prepare_cede;
2817 coroapi.prepare_cede_notself = prepare_cede_notself;
2818
2819 {
2820 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2821
2822 if (!svp) croak ("Time::HiRes is required");
2823 if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2824
2825 nvtime = INT2PTR (double (*)(), SvIV (*svp));
2826 }
2827
2828 assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
2829}
2830
2831SV *
2832new (char *klass, ...)
2833 ALIAS:
2834 Coro::new = 1
977 CODE: 2835 CODE:
978 Coro__State coro; 2836{
2837 struct coro *coro;
2838 MAGIC *mg;
2839 HV *hv;
2840 CV *cb;
2841 int i;
979 2842
980 if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) 2843 if (items > 1)
981 croak ("Coro::State::_newprocess expects an arrayref");
982 2844 {
2845 cb = coro_sv_2cv (aTHX_ ST (1));
2846
2847 if (!ix)
2848 {
2849 if (CvISXSUB (cb))
2850 croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2851
2852 if (!CvROOT (cb))
2853 croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2854 }
2855 }
2856
983 Newz (0, coro, 1, struct coro); 2857 Newz (0, coro, 1, struct coro);
2858 coro->args = newAV ();
2859 coro->flags = CF_NEW;
984 2860
985 coro->args = (AV *)SvREFCNT_inc (SvRV (args)); 2861 if (coro_first) coro_first->prev = coro;
986 /*coro->mainstack = 0; *//*actual work is done inside transfer */ 2862 coro->next = coro_first;
987 /*coro->stack = 0;*/ 2863 coro_first = coro;
988 2864
989 /* same as JMPENV_BOOTSTRAP */ 2865 coro->hv = hv = newHV ();
990 /* we might be able to recycle start_env, but safe is safe */ 2866 mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
991 /*Zero(&coro->start_env, 1, JMPENV);*/ 2867 mg->mg_flags |= MGf_DUP;
992 coro->start_env.je_ret = -1; 2868 RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
993 coro->start_env.je_mustcatch = TRUE;
994 2869
995 RETVAL = coro; 2870 if (items > 1)
2871 {
2872 av_extend (coro->args, items - 1 + ix - 1);
2873
2874 if (ix)
2875 {
2876 av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2877 cb = cv_coro_run;
2878 }
2879
2880 coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2881
2882 for (i = 2; i < items; i++)
2883 av_push (coro->args, newSVsv (ST (i)));
2884 }
2885}
996 OUTPUT: 2886 OUTPUT:
997 RETVAL 2887 RETVAL
998 2888
999void 2889void
1000transfer(prev, next, flags) 2890transfer (...)
1001 SV *prev
1002 SV *next
1003 int flags
1004 PROTOTYPE: @ 2891 PROTOTYPE: $$
1005 CODE: 2892 CODE:
1006 PUTBACK; 2893 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1007 SV_CORO (next, "Coro::transfer"); 2894
1008 SV_CORO (prev, "Coro::transfer"); 2895bool
1009 transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); 2896_destroy (SV *coro_sv)
1010 SPAGAIN; 2897 CODE:
2898 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2899 OUTPUT:
2900 RETVAL
1011 2901
1012void 2902void
1013DESTROY(coro)
1014 Coro::State coro
1015 CODE:
1016
1017 if (coro->mainstack && coro->mainstack != main_mainstack)
1018 {
1019 struct coro temp;
1020
1021 PUTBACK;
1022 SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
1023 LOAD (aTHX_ coro);
1024 SPAGAIN;
1025
1026 destroy_stacks (aTHX);
1027
1028 LOAD ((&temp)); /* this will get rid of defsv etc.. */
1029 SPAGAIN;
1030
1031 coro->mainstack = 0;
1032 }
1033
1034 deallocate_stack (coro);
1035 SvREFCNT_dec (coro->args);
1036 Safefree (coro);
1037
1038void
1039_exit(code) 2903_exit (int code)
1040 int code
1041 PROTOTYPE: $ 2904 PROTOTYPE: $
1042 CODE: 2905 CODE:
1043 _exit (code); 2906 _exit (code);
1044 2907
1045MODULE = Coro::State PACKAGE = Coro::Cont 2908SV *
2909clone (Coro::State coro)
2910 CODE:
2911{
2912#if CORO_CLONE
2913 struct coro *ncoro = coro_clone (coro);
2914 MAGIC *mg;
2915 /* TODO: too much duplication */
2916 ncoro->hv = newHV ();
2917 mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2918 mg->mg_flags |= MGf_DUP;
2919 RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
2920#else
2921 croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
2922#endif
2923}
2924 OUTPUT:
2925 RETVAL
1046 2926
1047# this is slightly dirty (should expose a c-level api) 2927int
2928cctx_stacksize (int new_stacksize = 0)
2929 PROTOTYPE: ;$
2930 CODE:
2931 RETVAL = cctx_stacksize;
2932 if (new_stacksize)
2933 {
2934 cctx_stacksize = new_stacksize;
2935 ++cctx_gen;
2936 }
2937 OUTPUT:
2938 RETVAL
2939
2940int
2941cctx_max_idle (int max_idle = 0)
2942 PROTOTYPE: ;$
2943 CODE:
2944 RETVAL = cctx_max_idle;
2945 if (max_idle > 1)
2946 cctx_max_idle = max_idle;
2947 OUTPUT:
2948 RETVAL
2949
2950int
2951cctx_count ()
2952 PROTOTYPE:
2953 CODE:
2954 RETVAL = cctx_count;
2955 OUTPUT:
2956 RETVAL
2957
2958int
2959cctx_idle ()
2960 PROTOTYPE:
2961 CODE:
2962 RETVAL = cctx_idle;
2963 OUTPUT:
2964 RETVAL
1048 2965
1049void 2966void
1050yield(...) 2967list ()
1051 PROTOTYPE: @ 2968 PROTOTYPE:
2969 PPCODE:
2970{
2971 struct coro *coro;
2972 for (coro = coro_first; coro; coro = coro->next)
2973 if (coro->hv)
2974 XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
2975}
2976
2977void
2978call (Coro::State coro, SV *coderef)
2979 ALIAS:
2980 eval = 1
2981 CODE:
2982{
2983 if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2984 {
2985 struct coro temp;
2986
2987 if (!(coro->flags & CF_RUNNING))
2988 {
2989 PUTBACK;
2990 save_perl (aTHX_ &temp);
2991 load_perl (aTHX_ coro);
2992 }
2993
2994 {
2995 dSP;
2996 ENTER;
2997 SAVETMPS;
2998 PUTBACK;
2999 PUSHSTACK;
3000 PUSHMARK (SP);
3001
3002 if (ix)
3003 eval_sv (coderef, 0);
3004 else
3005 call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3006
3007 POPSTACK;
3008 SPAGAIN;
3009 FREETMPS;
3010 LEAVE;
3011 PUTBACK;
3012 }
3013
3014 if (!(coro->flags & CF_RUNNING))
3015 {
3016 save_perl (aTHX_ coro);
3017 load_perl (aTHX_ &temp);
3018 SPAGAIN;
3019 }
3020 }
3021}
3022
3023SV *
3024is_ready (Coro::State coro)
3025 PROTOTYPE: $
3026 ALIAS:
3027 is_ready = CF_READY
3028 is_running = CF_RUNNING
3029 is_new = CF_NEW
3030 is_destroyed = CF_DESTROYED
3031 CODE:
3032 RETVAL = boolSV (coro->flags & ix);
3033 OUTPUT:
3034 RETVAL
3035
3036void
3037throw (Coro::State self, SV *throw = &PL_sv_undef)
3038 PROTOTYPE: $;$
1052 CODE: 3039 CODE:
1053 static SV *returnstk; 3040{
1054 SV *sv; 3041 struct coro *current = SvSTATE_current;
1055 AV *defav = GvAV (PL_defgv); 3042 SV **throwp = self == current ? &CORO_THROW : &self->except;
1056 struct coro *prev, *next;
1057
1058 if (!returnstk)
1059 returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
1060
1061 /* set up @_ -- ugly */
1062 av_clear (defav);
1063 av_fill (defav, items - 1);
1064 while (items--)
1065 av_store (defav, items, SvREFCNT_inc (ST(items)));
1066
1067 SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */
1068 sv = av_pop ((AV *)SvRV (returnstk));
1069 prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)));
1070 next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)));
1071 SvREFCNT_dec (sv); 3043 SvREFCNT_dec (*throwp);
3044 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
3045}
1072 3046
1073 transfer (aTHX_ prev, next, 0); 3047void
3048api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3049 PROTOTYPE: $;$
3050 C_ARGS: aTHX_ coro, flags
3051
3052SV *
3053has_cctx (Coro::State coro)
3054 PROTOTYPE: $
3055 CODE:
3056 /* maybe manage the running flag differently */
3057 RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
3058 OUTPUT:
3059 RETVAL
3060
3061int
3062is_traced (Coro::State coro)
3063 PROTOTYPE: $
3064 CODE:
3065 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
3066 OUTPUT:
3067 RETVAL
3068
3069UV
3070rss (Coro::State coro)
3071 PROTOTYPE: $
3072 ALIAS:
3073 usecount = 1
3074 CODE:
3075 switch (ix)
3076 {
3077 case 0: RETVAL = coro_rss (aTHX_ coro); break;
3078 case 1: RETVAL = coro->usecount; break;
3079 }
3080 OUTPUT:
3081 RETVAL
3082
3083void
3084force_cctx ()
3085 PROTOTYPE:
3086 CODE:
3087 cctx_current->idle_sp = 0;
3088
3089void
3090swap_defsv (Coro::State self)
3091 PROTOTYPE: $
3092 ALIAS:
3093 swap_defav = 1
3094 CODE:
3095 if (!self->slot)
3096 croak ("cannot swap state with coroutine that has no saved state,");
3097 else
3098 {
3099 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
3100 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3101
3102 SV *tmp = *src; *src = *dst; *dst = tmp;
3103 }
3104
1074 3105
1075MODULE = Coro::State PACKAGE = Coro 3106MODULE = Coro::State PACKAGE = Coro
1076 3107
1077# this is slightly dirty (should expose a c-level api)
1078
1079BOOT: 3108BOOT:
1080{ 3109{
1081 int i; 3110 int i;
3111
3112 sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3113 sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3114 cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);
3115 cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3116 coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3117 av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3118 av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3119 sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3120 sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3121
3122 sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3123 sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3124 cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3125 cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
3126
1082 HV *stash = gv_stashpv ("Coro", TRUE); 3127 coro_stash = gv_stashpv ("Coro", TRUE);
1083 3128
1084 newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); 3129 newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1085 newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); 3130 newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1086 newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); 3131 newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1087 newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); 3132 newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1088 newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); 3133 newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1089 newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); 3134 newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1090
1091 coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1092 coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1093 3135
1094 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 3136 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1095 coro_ready[i] = newAV (); 3137 coro_ready[i] = newAV ();
1096 3138
1097 { 3139 {
1098 SV *sv = perl_get_sv("Coro::API", 1); 3140 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1099 3141
1100 coroapi.schedule = api_schedule; 3142 coroapi.schedule = api_schedule;
3143 coroapi.schedule_to = api_schedule_to;
1101 coroapi.cede = api_cede; 3144 coroapi.cede = api_cede;
3145 coroapi.cede_notself = api_cede_notself;
1102 coroapi.ready = api_ready; 3146 coroapi.ready = api_ready;
3147 coroapi.is_ready = api_is_ready;
1103 coroapi.nready = &coro_nready; 3148 coroapi.nready = coro_nready;
1104 coroapi.current = coro_current; 3149 coroapi.current = coro_current;
1105 3150
1106 GCoroAPI = &coroapi; 3151 /*GCoroAPI = &coroapi;*/
1107 sv_setiv(sv, (IV)&coroapi); 3152 sv_setiv (sv, (IV)&coroapi);
1108 SvREADONLY_on(sv); 3153 SvREADONLY_on (sv);
1109 } 3154 }
1110} 3155}
1111 3156
1112#if !PERL_MICRO
1113
1114void 3157void
1115ready(self) 3158terminate (...)
1116 SV * self 3159 CODE:
3160 CORO_EXECUTE_SLF_XS (slf_init_terminate);
3161
3162void
3163schedule (...)
3164 CODE:
3165 CORO_EXECUTE_SLF_XS (slf_init_schedule);
3166
3167void
3168schedule_to (...)
3169 CODE:
3170 CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
3171
3172void
3173cede_to (...)
3174 CODE:
3175 CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3176
3177void
3178cede (...)
3179 CODE:
3180 CORO_EXECUTE_SLF_XS (slf_init_cede);
3181
3182void
3183cede_notself (...)
3184 CODE:
3185 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3186
3187void
3188_cancel (Coro::State self)
3189 CODE:
3190 coro_state_destroy (aTHX_ self);
3191 coro_call_on_destroy (aTHX_ self);
3192
3193void
3194_set_current (SV *current)
1117 PROTOTYPE: $ 3195 PROTOTYPE: $
1118 CODE: 3196 CODE:
1119 api_ready (self); 3197 SvREFCNT_dec (SvRV (coro_current));
3198 SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
1120 3199
1121#endif 3200void
3201_set_readyhook (SV *hook)
3202 PROTOTYPE: $
3203 CODE:
3204 SvREFCNT_dec (coro_readyhook);
3205 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
1122 3206
1123int 3207int
3208prio (Coro::State coro, int newprio = 0)
3209 PROTOTYPE: $;$
3210 ALIAS:
3211 nice = 1
3212 CODE:
3213{
3214 RETVAL = coro->prio;
3215
3216 if (items > 1)
3217 {
3218 if (ix)
3219 newprio = coro->prio - newprio;
3220
3221 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
3222 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
3223
3224 coro->prio = newprio;
3225 }
3226}
3227 OUTPUT:
3228 RETVAL
3229
3230SV *
3231ready (SV *self)
3232 PROTOTYPE: $
3233 CODE:
3234 RETVAL = boolSV (api_ready (aTHX_ self));
3235 OUTPUT:
3236 RETVAL
3237
3238int
1124nready(...) 3239nready (...)
1125 PROTOTYPE: 3240 PROTOTYPE:
1126 CODE: 3241 CODE:
1127 RETVAL = coro_nready; 3242 RETVAL = coro_nready;
1128 OUTPUT: 3243 OUTPUT:
1129 RETVAL 3244 RETVAL
1130 3245
1131void 3246void
1132schedule(...) 3247_pool_handler (...)
1133 PROTOTYPE:
1134 CODE: 3248 CODE:
1135 api_schedule (); 3249 CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
1136 3250
1137void 3251void
1138cede(...) 3252async_pool (SV *cv, ...)
1139 PROTOTYPE: 3253 PROTOTYPE: &@
3254 PPCODE:
3255{
3256 HV *hv = (HV *)av_pop (av_async_pool);
3257 AV *av = newAV ();
3258 SV *cb = ST (0);
3259 int i;
3260
3261 av_extend (av, items - 2);
3262 for (i = 1; i < items; ++i)
3263 av_push (av, SvREFCNT_inc_NN (ST (i)));
3264
3265 if ((SV *)hv == &PL_sv_undef)
3266 {
3267 PUSHMARK (SP);
3268 EXTEND (SP, 2);
3269 PUSHs (sv_Coro);
3270 PUSHs ((SV *)cv_pool_handler);
3271 PUTBACK;
3272 call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3273 SPAGAIN;
3274
3275 hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3276 }
3277
3278 {
3279 struct coro *coro = SvSTATE_hv (hv);
3280
3281 assert (!coro->invoke_cb);
3282 assert (!coro->invoke_av);
3283 coro->invoke_cb = SvREFCNT_inc (cb);
3284 coro->invoke_av = av;
3285 }
3286
3287 api_ready (aTHX_ (SV *)hv);
3288
3289 if (GIMME_V != G_VOID)
3290 XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv)));
3291 else
3292 SvREFCNT_dec (hv);
3293}
3294
3295SV *
3296rouse_cb ()
3297 PROTOTYPE:
1140 CODE: 3298 CODE:
3299 RETVAL = coro_new_rouse_cb (aTHX);
3300 OUTPUT:
3301 RETVAL
3302
3303void
3304rouse_wait (...)
3305 PROTOTYPE: ;$
3306 PPCODE:
3307 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3308
3309
3310MODULE = Coro::State PACKAGE = PerlIO::cede
3311
3312BOOT:
3313 PerlIO_define_layer (aTHX_ &PerlIO_cede);
3314
3315
3316MODULE = Coro::State PACKAGE = Coro::Semaphore
3317
3318SV *
3319new (SV *klass, SV *count = 0)
3320 CODE:
3321 RETVAL = sv_bless (
3322 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3323 GvSTASH (CvGV (cv))
3324 );
3325 OUTPUT:
3326 RETVAL
3327
3328# helper for Coro::Channel
3329SV *
3330_alloc (int count)
3331 CODE:
3332 RETVAL = coro_waitarray_new (aTHX_ count);
3333 OUTPUT:
3334 RETVAL
3335
3336SV *
3337count (SV *self)
3338 CODE:
3339 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3340 OUTPUT:
3341 RETVAL
3342
3343void
3344up (SV *self, int adjust = 1)
3345 ALIAS:
3346 adjust = 1
3347 CODE:
3348 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3349
3350void
3351down (...)
3352 CODE:
3353 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3354
3355void
3356wait (...)
3357 CODE:
3358 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3359
3360void
3361try (SV *self)
3362 PPCODE:
3363{
3364 AV *av = (AV *)SvRV (self);
3365 SV *count_sv = AvARRAY (av)[0];
3366 IV count = SvIVX (count_sv);
3367
3368 if (count > 0)
3369 {
3370 --count;
3371 SvIVX (count_sv) = count;
3372 XSRETURN_YES;
3373 }
3374 else
3375 XSRETURN_NO;
3376}
3377
3378void
3379waiters (SV *self)
3380 PPCODE:
3381{
3382 AV *av = (AV *)SvRV (self);
3383 int wcount = AvFILLp (av) + 1 - 1;
3384
3385 if (GIMME_V == G_SCALAR)
3386 XPUSHs (sv_2mortal (newSViv (wcount)));
3387 else
3388 {
3389 int i;
3390 EXTEND (SP, wcount);
3391 for (i = 1; i <= wcount; ++i)
3392 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3393 }
3394}
3395
3396MODULE = Coro::State PACKAGE = Coro::Signal
3397
3398SV *
3399new (SV *klass)
3400 CODE:
3401 RETVAL = sv_bless (
3402 coro_waitarray_new (aTHX_ 0),
3403 GvSTASH (CvGV (cv))
3404 );
3405 OUTPUT:
3406 RETVAL
3407
3408void
3409wait (...)
3410 CODE:
3411 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3412
3413void
3414broadcast (SV *self)
3415 CODE:
3416{
3417 AV *av = (AV *)SvRV (self);
3418 coro_signal_wake (aTHX_ av, AvFILLp (av));
3419}
3420
3421void
3422send (SV *self)
3423 CODE:
3424{
3425 AV *av = (AV *)SvRV (self);
3426
3427 if (AvFILLp (av))
3428 coro_signal_wake (aTHX_ av, 1);
3429 else
3430 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
3431}
3432
3433IV
3434awaited (SV *self)
3435 CODE:
3436 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3437 OUTPUT:
3438 RETVAL
3439
3440
3441MODULE = Coro::State PACKAGE = Coro::AnyEvent
3442
3443BOOT:
3444 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
3445
3446void
3447_schedule (...)
3448 CODE:
3449{
3450 static int incede;
3451
1141 api_cede (); 3452 api_cede_notself (aTHX);
1142 3453
3454 ++incede;
3455 while (coro_nready >= incede && api_cede (aTHX))
3456 ;
3457
3458 sv_setsv (sv_activity, &PL_sv_undef);
3459 if (coro_nready >= incede)
3460 {
3461 PUSHMARK (SP);
3462 PUTBACK;
3463 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3464 }
3465
3466 --incede;
3467}
3468
3469
3470MODULE = Coro::State PACKAGE = Coro::AIO
3471
3472void
3473_register (char *target, char *proto, SV *req)
3474 CODE:
3475{
3476 CV *req_cv = coro_sv_2cv (aTHX_ req);
3477 /* newXSproto doesn't return the CV on 5.8 */
3478 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3479 sv_setpv ((SV *)slf_cv, proto);
3480 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3481}
3482

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