ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/Coro/Coro/State.xs
(Generate patch)

Comparing Coro/Coro/State.xs (file contents):
Revision 1.250 by root, Wed Oct 22 16:34:07 2008 UTC vs.
Revision 1.306 by root, Wed Nov 19 11:11:10 2008 UTC

… …
16 16
17#ifdef WIN32 17#ifdef WIN32
18# undef setjmp 18# undef setjmp
19# undef longjmp 19# undef longjmp
20# undef _exit 20# undef _exit
21# define setjmp _setjmp // deep magic, don't ask 21# define setjmp _setjmp /* deep magic */
22#else 22#else
23# include <inttypes.h> /* most portable stdint.h */ 23# include <inttypes.h> /* most portable stdint.h */
24#endif 24#endif
25 25
26#ifdef HAVE_MMAP 26#ifdef HAVE_MMAP
… …
46# define BOOT_PAGESIZE (void)0 46# define BOOT_PAGESIZE (void)0
47#endif 47#endif
48 48
49#if CORO_USE_VALGRIND 49#if CORO_USE_VALGRIND
50# include <valgrind/valgrind.h> 50# include <valgrind/valgrind.h>
51# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
52#else
53# define REGISTER_STACK(cctx,start,end)
54#endif 51#endif
55 52
56/* the maximum number of idle cctx that will be pooled */ 53/* the maximum number of idle cctx that will be pooled */
57#define MAX_IDLE_CCTX 8 54static int cctx_max_idle = 4;
58 55
59#define PERL_VERSION_ATLEAST(a,b,c) \ 56#define PERL_VERSION_ATLEAST(a,b,c) \
60 (PERL_REVISION > (a) \ 57 (PERL_REVISION > (a) \
61 || (PERL_REVISION == (a) \ 58 || (PERL_REVISION == (a) \
62 && (PERL_VERSION > (b) \ 59 && (PERL_VERSION > (b) \
… …
81# ifndef IS_PADCONST 78# ifndef IS_PADCONST
82# define IS_PADCONST(v) 0 79# define IS_PADCONST(v) 0
83# endif 80# endif
84#endif 81#endif
85 82
83/* 5.11 */
84#ifndef CxHASARGS
85# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86#endif
87
88/* 5.10.0 */
89#ifndef SvREFCNT_inc_NN
90# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91#endif
92
86/* 5.8.8 */ 93/* 5.8.8 */
87#ifndef GV_NOTQUAL 94#ifndef GV_NOTQUAL
88# define GV_NOTQUAL 0 95# define GV_NOTQUAL 0
89#endif 96#endif
90#ifndef newSV 97#ifndef newSV
91# define newSV(l) NEWSV(0,l) 98# define newSV(l) NEWSV(0,l)
92#endif 99#endif
93#ifndef SvREFCNT_inc_NN 100#ifndef CvISXSUB_on
94# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) 101# define CvISXSUB_on(cv) (void)cv
95#endif
96
97/* 5.11 */
98#ifndef CxHASARGS
99# define CxHASARGS(cx) (cx)->blk_sub.hasargs
100#endif 102#endif
101 103
102/* 5.8.7 */ 104/* 5.8.7 */
103#ifndef SvRV_set 105#ifndef SvRV_set
104# define SvRV_set(s,v) SvRV(s) = (v) 106# define SvRV_set(s,v) SvRV(s) = (v)
… …
117# define CORO_PREFER_PERL_FUNCTIONS 0 119# define CORO_PREFER_PERL_FUNCTIONS 0
118#endif 120#endif
119 121
120/* The next macros try to return the current stack pointer, in an as 122/* The next macros try to return the current stack pointer, in an as
121 * portable way as possible. */ 123 * portable way as possible. */
124#if __GNUC__ >= 4
125# define dSTACKLEVEL int stacklevel_dummy
126# define STACKLEVEL __builtin_frame_address (0)
127#else
122#define dSTACKLEVEL volatile char stacklevel 128# define dSTACKLEVEL volatile void *stacklevel
123#define STACKLEVEL ((void *)&stacklevel) 129# define STACKLEVEL ((void *)&stacklevel)
130#endif
124 131
125#define IN_DESTRUCT (PL_main_cv == Nullcv) 132#define IN_DESTRUCT (PL_main_cv == Nullcv)
126 133
127#if __GNUC__ >= 3 134#if __GNUC__ >= 3
128# define attribute(x) __attribute__(x) 135# define attribute(x) __attribute__(x)
129# define BARRIER __asm__ __volatile__ ("" : : : "memory")
130# define expect(expr,value) __builtin_expect ((expr),(value)) 136# define expect(expr,value) __builtin_expect ((expr),(value))
137# define INLINE static inline
131#else 138#else
132# define attribute(x) 139# define attribute(x)
133# define BARRIER
134# define expect(expr,value) (expr) 140# define expect(expr,value) (expr)
141# define INLINE static
135#endif 142#endif
136 143
137#define expect_false(expr) expect ((expr) != 0, 0) 144#define expect_false(expr) expect ((expr) != 0, 0)
138#define expect_true(expr) expect ((expr) != 0, 1) 145#define expect_true(expr) expect ((expr) != 0, 1)
139 146
140#define NOINLINE attribute ((noinline)) 147#define NOINLINE attribute ((noinline))
141 148
142#include "CoroAPI.h" 149#include "CoroAPI.h"
150#define GCoroAPI (&coroapi) /* very sneaky */
143 151
144#ifdef USE_ITHREADS 152#ifdef USE_ITHREADS
145static perl_mutex coro_mutex; 153# if CORO_PTHREAD
146# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) 154static void *coro_thx;
147# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
148#else
149# define LOCK (void)0
150# define UNLOCK (void)0
151#endif 155# endif
152 156#endif
153/* helper storage struct for Coro::AIO */
154struct io_state
155{
156 AV *res;
157 int errorno;
158 I32 laststype;
159 int laststatval;
160 Stat_t statcache;
161};
162 157
163static double (*nvtime)(); /* so why doesn't it take void? */ 158static double (*nvtime)(); /* so why doesn't it take void? */
164 159
160/* we hijack an hopefully unused CV flag for our purposes */
161#define CVf_SLF 0x4000
162static OP *pp_slf (pTHX);
163
164static U32 cctx_gen;
165static size_t coro_stacksize = CORO_STACKSIZE; 165static size_t cctx_stacksize = CORO_STACKSIZE;
166static struct CoroAPI coroapi; 166static struct CoroAPI coroapi;
167static AV *main_mainstack; /* used to differentiate between $main and others */ 167static AV *main_mainstack; /* used to differentiate between $main and others */
168static JMPENV *main_top_env; 168static JMPENV *main_top_env;
169static HV *coro_state_stash, *coro_stash; 169static HV *coro_state_stash, *coro_stash;
170static volatile SV *coro_mortal; /* will be freed after next transfer */ 170static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
171 171
172static GV *irsgv; /* $/ */ 172static GV *irsgv; /* $/ */
173static GV *stdoutgv; /* *STDOUT */ 173static GV *stdoutgv; /* *STDOUT */
174static SV *rv_diehook; 174static SV *rv_diehook;
175static SV *rv_warnhook; 175static SV *rv_warnhook;
… …
194 CC_TRACE_LINE = 0x10, /* trace each statement */ 194 CC_TRACE_LINE = 0x10, /* trace each statement */
195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, 195 CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
196}; 196};
197 197
198/* this is a structure representing a c-level coroutine */ 198/* this is a structure representing a c-level coroutine */
199typedef struct coro_cctx { 199typedef struct coro_cctx
200{
200 struct coro_cctx *next; 201 struct coro_cctx *next;
201 202
202 /* the stack */ 203 /* the stack */
203 void *sptr; 204 void *sptr;
204 size_t ssize; 205 size_t ssize;
… …
207 void *idle_sp; /* sp of top-level transfer/schedule/cede call */ 208 void *idle_sp; /* sp of top-level transfer/schedule/cede call */
208 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ 209 JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
209 JMPENV *top_env; 210 JMPENV *top_env;
210 coro_context cctx; 211 coro_context cctx;
211 212
213 U32 gen;
212#if CORO_USE_VALGRIND 214#if CORO_USE_VALGRIND
213 int valgrind_id; 215 int valgrind_id;
214#endif 216#endif
215 unsigned char flags; 217 unsigned char flags;
216} coro_cctx; 218} coro_cctx;
… …
221 CF_NEW = 0x0004, /* has never been switched to */ 223 CF_NEW = 0x0004, /* has never been switched to */
222 CF_DESTROYED = 0x0008, /* coroutine data has been freed */ 224 CF_DESTROYED = 0x0008, /* coroutine data has been freed */
223}; 225};
224 226
225/* the structure where most of the perl state is stored, overlaid on the cxstack */ 227/* the structure where most of the perl state is stored, overlaid on the cxstack */
226typedef struct { 228typedef struct
229{
227 SV *defsv; 230 SV *defsv;
228 AV *defav; 231 AV *defav;
229 SV *errsv; 232 SV *errsv;
230 SV *irsgv; 233 SV *irsgv;
231#define VAR(name,type) type name; 234#define VAR(name,type) type name;
… …
235 238
236#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) 239#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
237 240
238/* this is a structure representing a perl-level coroutine */ 241/* this is a structure representing a perl-level coroutine */
239struct coro { 242struct coro {
240 /* the c coroutine allocated to this perl coroutine, if any */ 243 /* the C coroutine allocated to this perl coroutine, if any */
241 coro_cctx *cctx; 244 coro_cctx *cctx;
242 245
243 /* process data */ 246 /* state data */
247 struct CoroSLF slf_frame; /* saved slf frame */
244 AV *mainstack; 248 AV *mainstack;
245 perl_slots *slot; /* basically the saved sp */ 249 perl_slots *slot; /* basically the saved sp */
246 250
247 AV *args; /* data associated with this coroutine (initial args) */ 251 AV *args; /* data associated with this coroutine (initial args) */
248 int refcnt; /* coroutines are refcounted, yes */ 252 int refcnt; /* coroutines are refcounted, yes */
249 int flags; /* CF_ flags */ 253 int flags; /* CF_ flags */
250 HV *hv; /* the perl hash associated with this coro, if any */ 254 HV *hv; /* the perl hash associated with this coro, if any */
255 void (*on_destroy)(pTHX_ struct coro *coro);
251 256
252 /* statistics */ 257 /* statistics */
253 int usecount; /* number of transfers to this coro */ 258 int usecount; /* number of transfers to this coro */
254 259
255 /* coro process data */ 260 /* coro process data */
256 int prio; 261 int prio;
257 SV *throw; /* exception to be thrown */ 262 SV *except; /* exception to be thrown */
263 SV *rouse_cb;
258 264
259 /* async_pool */ 265 /* async_pool */
260 SV *saved_deffh; 266 SV *saved_deffh;
261 267
262 /* linked list */ 268 /* linked list */
263 struct coro *next, *prev; 269 struct coro *next, *prev;
264}; 270};
265 271
266typedef struct coro *Coro__State; 272typedef struct coro *Coro__State;
267typedef struct coro *Coro__State_or_hashref; 273typedef struct coro *Coro__State_or_hashref;
274
275/* the following variables are effectively part of the perl context */
276/* and get copied between struct coro and these variables */
277/* the mainr easonw e don't support windows process emulation */
278static struct CoroSLF slf_frame; /* the current slf frame */
268 279
269/** Coro ********************************************************************/ 280/** Coro ********************************************************************/
270 281
271#define PRIO_MAX 3 282#define PRIO_MAX 3
272#define PRIO_HIGH 1 283#define PRIO_HIGH 1
… …
276#define PRIO_MIN -4 287#define PRIO_MIN -4
277 288
278/* for Coro.pm */ 289/* for Coro.pm */
279static SV *coro_current; 290static SV *coro_current;
280static SV *coro_readyhook; 291static SV *coro_readyhook;
281static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; 292static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
282static int coro_nready;
283static struct coro *coro_first; 293static struct coro *coro_first;
294#define coro_nready coroapi.nready
284 295
285/** lowlevel stuff **********************************************************/ 296/** lowlevel stuff **********************************************************/
286 297
287static SV * 298static SV *
288coro_get_sv (pTHX_ const char *name, int create) 299coro_get_sv (pTHX_ const char *name, int create)
… …
373 SvREFCNT_dec (av); /* sv_magicext increased the refcount */ 384 SvREFCNT_dec (av); /* sv_magicext increased the refcount */
374 385
375 return 0; 386 return 0;
376} 387}
377 388
378#define CORO_MAGIC_type_cv PERL_MAGIC_ext 389#define CORO_MAGIC_type_cv 26
379#define CORO_MAGIC_type_state PERL_MAGIC_ext 390#define CORO_MAGIC_type_state PERL_MAGIC_ext
380 391
381static MGVTBL coro_cv_vtbl = { 392static MGVTBL coro_cv_vtbl = {
382 0, 0, 0, 0, 393 0, 0, 0, 0,
383 coro_cv_free 394 coro_cv_free
384}; 395};
385 396
397#define CORO_MAGIC_NN(sv, type) \
398 (expect_true (SvMAGIC (sv)->mg_type == type) \
399 ? SvMAGIC (sv) \
400 : mg_find (sv, type))
401
386#define CORO_MAGIC(sv,type) \ 402#define CORO_MAGIC(sv, type) \
387 SvMAGIC (sv) \ 403 (expect_true (SvMAGIC (sv)) \
388 ? SvMAGIC (sv)->mg_type == type \ 404 ? CORO_MAGIC_NN (sv, type) \
389 ? SvMAGIC (sv) \
390 : mg_find (sv, type) \
391 : 0 405 : 0)
392 406
393#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) 407#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
394#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) 408#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
395 409
396static struct coro * 410INLINE struct coro *
397SvSTATE_ (pTHX_ SV *coro) 411SvSTATE_ (pTHX_ SV *coro)
398{ 412{
399 HV *stash; 413 HV *stash;
400 MAGIC *mg; 414 MAGIC *mg;
401 415
… …
416 mg = CORO_MAGIC_state (coro); 430 mg = CORO_MAGIC_state (coro);
417 return (struct coro *)mg->mg_ptr; 431 return (struct coro *)mg->mg_ptr;
418} 432}
419 433
420#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) 434#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
435
436/* faster than SvSTATE, but expects a coroutine hv */
437#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
438#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
421 439
422/* the next two functions merely cache the padlists */ 440/* the next two functions merely cache the padlists */
423static void 441static void
424get_padlist (pTHX_ CV *cv) 442get_padlist (pTHX_ CV *cv)
425{ 443{
… …
431 else 449 else
432 { 450 {
433#if CORO_PREFER_PERL_FUNCTIONS 451#if CORO_PREFER_PERL_FUNCTIONS
434 /* this is probably cleaner? but also slower! */ 452 /* this is probably cleaner? but also slower! */
435 /* in practise, it seems to be less stable */ 453 /* in practise, it seems to be less stable */
436 CV *cp = Perl_cv_clone (cv); 454 CV *cp = Perl_cv_clone (aTHX_ cv);
437 CvPADLIST (cv) = CvPADLIST (cp); 455 CvPADLIST (cv) = CvPADLIST (cp);
438 CvPADLIST (cp) = 0; 456 CvPADLIST (cp) = 0;
439 SvREFCNT_dec (cp); 457 SvREFCNT_dec (cp);
440#else 458#else
441 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); 459 CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
… …
492 CvPADLIST (cv) = (AV *)POPs; 510 CvPADLIST (cv) = (AV *)POPs;
493 } 511 }
494 512
495 PUTBACK; 513 PUTBACK;
496 } 514 }
515
516 slf_frame = c->slf_frame;
517 CORO_THROW = c->except;
497} 518}
498 519
499static void 520static void
500save_perl (pTHX_ Coro__State c) 521save_perl (pTHX_ Coro__State c)
501{ 522{
523 c->except = CORO_THROW;
524 c->slf_frame = slf_frame;
525
502 { 526 {
503 dSP; 527 dSP;
504 I32 cxix = cxstack_ix; 528 I32 cxix = cxstack_ix;
505 PERL_CONTEXT *ccstk = cxstack; 529 PERL_CONTEXT *ccstk = cxstack;
506 PERL_SI *top_si = PL_curstackinfo; 530 PERL_SI *top_si = PL_curstackinfo;
… …
573 #undef VAR 597 #undef VAR
574 } 598 }
575} 599}
576 600
577/* 601/*
578 * allocate various perl stacks. This is an exact copy 602 * allocate various perl stacks. This is almost an exact copy
579 * of perl.c:init_stacks, except that it uses less memory 603 * of perl.c:init_stacks, except that it uses less memory
580 * on the (sometimes correct) assumption that coroutines do 604 * on the (sometimes correct) assumption that coroutines do
581 * not usually need a lot of stackspace. 605 * not usually need a lot of stackspace.
582 */ 606 */
583#if CORO_PREFER_PERL_FUNCTIONS 607#if CORO_PREFER_PERL_FUNCTIONS
584# define coro_init_stacks init_stacks 608# define coro_init_stacks(thx) init_stacks ()
585#else 609#else
586static void 610static void
587coro_init_stacks (pTHX) 611coro_init_stacks (pTHX)
588{ 612{
589 PL_curstackinfo = new_stackinfo(32, 8); 613 PL_curstackinfo = new_stackinfo(32, 8);
… …
626 650
627/* 651/*
628 * destroy the stacks, the callchain etc... 652 * destroy the stacks, the callchain etc...
629 */ 653 */
630static void 654static void
631coro_destroy_stacks (pTHX) 655coro_destruct_stacks (pTHX)
632{ 656{
633 while (PL_curstackinfo->si_next) 657 while (PL_curstackinfo->si_next)
634 PL_curstackinfo = PL_curstackinfo->si_next; 658 PL_curstackinfo = PL_curstackinfo->si_next;
635 659
636 while (PL_curstackinfo) 660 while (PL_curstackinfo)
… …
785 809
786 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; 810 return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
787} 811}
788 812
789static void 813static void
814prepare_nop (pTHX_ struct coro_transfer_args *ta)
815{
816 /* kind of mega-hacky, but works */
817 ta->next = ta->prev = (struct coro *)ta;
818}
819
820static int
821slf_check_nop (pTHX_ struct CoroSLF *frame)
822{
823 return 0;
824}
825
826static UNOP coro_setup_op;
827
828static void NOINLINE /* noinline to keep it out of the transfer fast path */
790coro_setup (pTHX_ struct coro *coro) 829coro_setup (pTHX_ struct coro *coro)
791{ 830{
792 /* 831 /*
793 * emulate part of the perl startup here. 832 * emulate part of the perl startup here.
794 */ 833 */
… …
818 PL_rs = newSVsv (GvSV (irsgv)); 857 PL_rs = newSVsv (GvSV (irsgv));
819 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); 858 PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
820 859
821 { 860 {
822 dSP; 861 dSP;
823 LOGOP myop; 862 UNOP myop;
824 863
825 Zero (&myop, 1, LOGOP); 864 Zero (&myop, 1, UNOP);
826 myop.op_next = Nullop; 865 myop.op_next = Nullop;
827 myop.op_flags = OPf_WANT_VOID; 866 myop.op_flags = OPf_WANT_VOID;
828 867
829 PUSHMARK (SP); 868 PUSHMARK (SP);
830 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); 869 XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
831 PUTBACK; 870 PUTBACK;
… …
833 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 872 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
834 SPAGAIN; 873 SPAGAIN;
835 } 874 }
836 875
837 /* this newly created coroutine might be run on an existing cctx which most 876 /* this newly created coroutine might be run on an existing cctx which most
838 * likely was suspended in set_stacklevel, called from entersub. 877 * likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
839 * set_stacklevl doesn't do anything on return, but entersub does LEAVE,
840 * so we ENTER here for symmetry
841 */ 878 */
842 ENTER; 879 slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
843} 880 slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
844 881
882 /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
883 coro_setup_op.op_next = PL_op;
884 coro_setup_op.op_type = OP_CUSTOM;
885 coro_setup_op.op_ppaddr = pp_slf;
886 /* no flags required, as an init function won't be called */
887
888 PL_op = (OP *)&coro_setup_op;
889
890 /* copy throw, in case it was set before coro_setup */
891 CORO_THROW = coro->except;
892}
893
845static void 894static void
846coro_destroy (pTHX_ struct coro *coro) 895coro_destruct (pTHX_ struct coro *coro)
847{ 896{
848 if (!IN_DESTRUCT) 897 if (!IN_DESTRUCT)
849 { 898 {
850 /* restore all saved variables and stuff */ 899 /* restore all saved variables and stuff */
851 LEAVE_SCOPE (0); 900 LEAVE_SCOPE (0);
… …
870 SvREFCNT_dec (GvSV (irsgv)); 919 SvREFCNT_dec (GvSV (irsgv));
871 920
872 SvREFCNT_dec (PL_diehook); 921 SvREFCNT_dec (PL_diehook);
873 SvREFCNT_dec (PL_warnhook); 922 SvREFCNT_dec (PL_warnhook);
874 923
924 SvREFCNT_dec (CORO_THROW);
875 SvREFCNT_dec (coro->saved_deffh); 925 SvREFCNT_dec (coro->saved_deffh);
876 SvREFCNT_dec (coro->throw); 926 SvREFCNT_dec (coro->rouse_cb);
877 927
878 coro_destroy_stacks (aTHX); 928 coro_destruct_stacks (aTHX);
879} 929}
880 930
881static void 931INLINE void
882free_coro_mortal (pTHX) 932free_coro_mortal (pTHX)
883{ 933{
884 if (expect_true (coro_mortal)) 934 if (expect_true (coro_mortal))
885 { 935 {
886 SvREFCNT_dec (coro_mortal); 936 SvREFCNT_dec (coro_mortal);
… …
891static int 941static int
892runops_trace (pTHX) 942runops_trace (pTHX)
893{ 943{
894 COP *oldcop = 0; 944 COP *oldcop = 0;
895 int oldcxix = -2; 945 int oldcxix = -2;
896 struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ 946 struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
897 coro_cctx *cctx = coro->cctx; 947 coro_cctx *cctx = coro->cctx;
898 948
899 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) 949 while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
900 { 950 {
901 PERL_ASYNC_CHECK (); 951 PERL_ASYNC_CHECK ();
… …
1010 1060
1011 TAINT_NOT; 1061 TAINT_NOT;
1012 return 0; 1062 return 0;
1013} 1063}
1014 1064
1015/* inject a fake call to Coro::State::_cctx_init into the execution */ 1065static struct coro_cctx *cctx_ssl_cctx;
1016/* _cctx_init should be careful, as it could be called at almost any time */ 1066static struct CoroSLF cctx_ssl_frame;
1017/* during execution of a perl program */ 1067
1068static void
1069slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1070{
1071 ta->prev = (struct coro *)cctx_ssl_cctx;
1072 ta->next = 0;
1073}
1074
1075static int
1076slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1077{
1078 *frame = cctx_ssl_frame;
1079
1080 return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1081}
1082
1083/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1018static void NOINLINE 1084static void NOINLINE
1019cctx_prepare (pTHX_ coro_cctx *cctx) 1085cctx_prepare (pTHX_ coro_cctx *cctx)
1020{ 1086{
1021 dSP;
1022 LOGOP myop;
1023
1024 PL_top_env = &PL_start_env; 1087 PL_top_env = &PL_start_env;
1025 1088
1026 if (cctx->flags & CC_TRACE) 1089 if (cctx->flags & CC_TRACE)
1027 PL_runops = runops_trace; 1090 PL_runops = runops_trace;
1028 1091
1029 Zero (&myop, 1, LOGOP); 1092 /* we already must be executing an SLF op, there is no other valid way
1030 myop.op_next = PL_op; 1093 * that can lead to creation of a new cctx */
1031 myop.op_flags = OPf_WANT_VOID | OPf_STACKED; 1094 assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1095 slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1032 1096
1033 PUSHMARK (SP); 1097 /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1034 EXTEND (SP, 2); 1098 cctx_ssl_cctx = cctx;
1035 PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); 1099 cctx_ssl_frame = slf_frame;
1036 PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); 1100
1037 PUTBACK; 1101 slf_frame.prepare = slf_prepare_set_stacklevel;
1038 PL_op = (OP *)&myop; 1102 slf_frame.check = slf_check_set_stacklevel;
1039 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); 1103}
1040 SPAGAIN; 1104
1105/* the tail of transfer: execute stuff we can only do after a transfer */
1106INLINE void
1107transfer_tail (pTHX)
1108{
1109 free_coro_mortal (aTHX);
1041} 1110}
1042 1111
1043/* 1112/*
1044 * this is a _very_ stripped down perl interpreter ;) 1113 * this is a _very_ stripped down perl interpreter ;)
1045 */ 1114 */
1046static void 1115static void
1047cctx_run (void *arg) 1116cctx_run (void *arg)
1048{ 1117{
1118#ifdef USE_ITHREADS
1119# if CORO_PTHREAD
1120 PERL_SET_CONTEXT (coro_thx);
1121# endif
1122#endif
1123 {
1049 dTHX; 1124 dTHX;
1050 1125
1051 /* cctx_run is the alternative tail of transfer(), so unlock here. */ 1126 /* normally we would need to skip the entersub here */
1052 UNLOCK; 1127 /* not doing so will re-execute it, which is exactly what we want */
1053
1054 /* we now skip the entersub that lead to transfer() */
1055 PL_op = PL_op->op_next; 1128 /* PL_nop = PL_nop->op_next */
1056 1129
1057 /* inject a fake subroutine call to cctx_init */ 1130 /* inject a fake subroutine call to cctx_init */
1058 cctx_prepare (aTHX_ (coro_cctx *)arg); 1131 cctx_prepare (aTHX_ (coro_cctx *)arg);
1059 1132
1133 /* cctx_run is the alternative tail of transfer() */
1134 transfer_tail (aTHX);
1135
1060 /* somebody or something will hit me for both perl_run and PL_restartop */ 1136 /* somebody or something will hit me for both perl_run and PL_restartop */
1061 PL_restartop = PL_op; 1137 PL_restartop = PL_op;
1062 perl_run (PL_curinterp); 1138 perl_run (PL_curinterp);
1063 1139
1064 /* 1140 /*
1065 * If perl-run returns we assume exit() was being called or the coro 1141 * If perl-run returns we assume exit() was being called or the coro
1066 * fell off the end, which seems to be the only valid (non-bug) 1142 * fell off the end, which seems to be the only valid (non-bug)
1067 * reason for perl_run to return. We try to exit by jumping to the 1143 * reason for perl_run to return. We try to exit by jumping to the
1068 * bootstrap-time "top" top_env, as we cannot restore the "main" 1144 * bootstrap-time "top" top_env, as we cannot restore the "main"
1069 * coroutine as Coro has no such concept 1145 * coroutine as Coro has no such concept
1070 */ 1146 */
1071 PL_top_env = main_top_env; 1147 PL_top_env = main_top_env;
1072 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ 1148 JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1149 }
1073} 1150}
1074 1151
1075static coro_cctx * 1152static coro_cctx *
1076cctx_new () 1153cctx_new ()
1077{ 1154{
1078 coro_cctx *cctx; 1155 coro_cctx *cctx;
1156
1157 ++cctx_count;
1158 New (0, cctx, 1, coro_cctx);
1159
1160 cctx->gen = cctx_gen;
1161 cctx->flags = 0;
1162 cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
1163
1164 return cctx;
1165}
1166
1167/* create a new cctx only suitable as source */
1168static coro_cctx *
1169cctx_new_empty ()
1170{
1171 coro_cctx *cctx = cctx_new ();
1172
1173 cctx->sptr = 0;
1174 coro_create (&cctx->cctx, 0, 0, 0, 0);
1175
1176 return cctx;
1177}
1178
1179/* create a new cctx suitable as destination/running a perl interpreter */
1180static coro_cctx *
1181cctx_new_run ()
1182{
1183 coro_cctx *cctx = cctx_new ();
1079 void *stack_start; 1184 void *stack_start;
1080 size_t stack_size; 1185 size_t stack_size;
1081 1186
1082 ++cctx_count;
1083
1084 Newz (0, cctx, 1, coro_cctx);
1085
1086#if HAVE_MMAP 1187#if HAVE_MMAP
1087 cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; 1188 cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
1088 /* mmap supposedly does allocate-on-write for us */ 1189 /* mmap supposedly does allocate-on-write for us */
1089 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); 1190 cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
1090 1191
1091 if (cctx->sptr != (void *)-1) 1192 if (cctx->sptr != (void *)-1)
1092 { 1193 {
1093# if CORO_STACKGUARD 1194 #if CORO_STACKGUARD
1094 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); 1195 mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1095# endif 1196 #endif
1096 stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; 1197 stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1097 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; 1198 stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1098 cctx->flags |= CC_MAPPED; 1199 cctx->flags |= CC_MAPPED;
1099 } 1200 }
1100 else 1201 else
1101#endif 1202#endif
1102 { 1203 {
1103 cctx->ssize = coro_stacksize * (long)sizeof (long); 1204 cctx->ssize = cctx_stacksize * (long)sizeof (long);
1104 New (0, cctx->sptr, coro_stacksize, long); 1205 New (0, cctx->sptr, cctx_stacksize, long);
1105 1206
1106 if (!cctx->sptr) 1207 if (!cctx->sptr)
1107 { 1208 {
1108 perror ("FATAL: unable to allocate stack for coroutine"); 1209 perror ("FATAL: unable to allocate stack for coroutine, exiting.");
1109 _exit (EXIT_FAILURE); 1210 _exit (EXIT_FAILURE);
1110 } 1211 }
1111 1212
1112 stack_start = cctx->sptr; 1213 stack_start = cctx->sptr;
1113 stack_size = cctx->ssize; 1214 stack_size = cctx->ssize;
1114 } 1215 }
1115 1216
1116 REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); 1217 #if CORO_USE_VALGRIND
1218 cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
1219 #endif
1220
1117 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); 1221 coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1118 1222
1119 return cctx; 1223 return cctx;
1120} 1224}
1121 1225
… …
1124{ 1228{
1125 if (!cctx) 1229 if (!cctx)
1126 return; 1230 return;
1127 1231
1128 --cctx_count; 1232 --cctx_count;
1233 coro_destroy (&cctx->cctx);
1129 1234
1235 /* coro_transfer creates new, empty cctx's */
1236 if (cctx->sptr)
1237 {
1130#if CORO_USE_VALGRIND 1238 #if CORO_USE_VALGRIND
1131 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); 1239 VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1132#endif 1240 #endif
1133 1241
1134#if HAVE_MMAP 1242#if HAVE_MMAP
1135 if (cctx->flags & CC_MAPPED) 1243 if (cctx->flags & CC_MAPPED)
1136 munmap (cctx->sptr, cctx->ssize); 1244 munmap (cctx->sptr, cctx->ssize);
1137 else 1245 else
1138#endif 1246#endif
1139 Safefree (cctx->sptr); 1247 Safefree (cctx->sptr);
1248 }
1140 1249
1141 Safefree (cctx); 1250 Safefree (cctx);
1142} 1251}
1143 1252
1144/* wether this cctx should be destructed */ 1253/* wether this cctx should be destructed */
1145#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) 1254#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1146 1255
1147static coro_cctx * 1256static coro_cctx *
1148cctx_get (pTHX) 1257cctx_get (pTHX)
1149{ 1258{
1150 while (expect_true (cctx_first)) 1259 while (expect_true (cctx_first))
… …
1157 return cctx; 1266 return cctx;
1158 1267
1159 cctx_destroy (cctx); 1268 cctx_destroy (cctx);
1160 } 1269 }
1161 1270
1162 return cctx_new (); 1271 return cctx_new_run ();
1163} 1272}
1164 1273
1165static void 1274static void
1166cctx_put (coro_cctx *cctx) 1275cctx_put (coro_cctx *cctx)
1167{ 1276{
1277 assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
1278
1168 /* free another cctx if overlimit */ 1279 /* free another cctx if overlimit */
1169 if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) 1280 if (expect_false (cctx_idle >= cctx_max_idle))
1170 { 1281 {
1171 coro_cctx *first = cctx_first; 1282 coro_cctx *first = cctx_first;
1172 cctx_first = first->next; 1283 cctx_first = first->next;
1173 --cctx_idle; 1284 --cctx_idle;
1174 1285
… …
1183/** coroutine switching *****************************************************/ 1294/** coroutine switching *****************************************************/
1184 1295
1185static void 1296static void
1186transfer_check (pTHX_ struct coro *prev, struct coro *next) 1297transfer_check (pTHX_ struct coro *prev, struct coro *next)
1187{ 1298{
1299 /* TODO: throwing up here is considered harmful */
1300
1188 if (expect_true (prev != next)) 1301 if (expect_true (prev != next))
1189 { 1302 {
1190 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) 1303 if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1191 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); 1304 croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");
1192 1305
1193 if (expect_false (next->flags & CF_RUNNING)) 1306 if (expect_false (next->flags & CF_RUNNING))
1194 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); 1307 croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1195 1308
1196 if (expect_false (next->flags & CF_DESTROYED)) 1309 if (expect_false (next->flags & CF_DESTROYED))
1197 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); 1310 croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");
1198 1311
1199#if !PERL_VERSION_ATLEAST (5,10,0) 1312#if !PERL_VERSION_ATLEAST (5,10,0)
1200 if (expect_false (PL_lex_state != LEX_NOTPARSING)) 1313 if (expect_false (PL_lex_state != LEX_NOTPARSING))
1201 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); 1314 croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1202#endif 1315#endif
1203 } 1316 }
1204} 1317}
1205 1318
1206/* always use the TRANSFER macro */ 1319/* always use the TRANSFER macro */
1207static void NOINLINE 1320static void NOINLINE /* noinline so we have a fixed stackframe */
1208transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) 1321transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1209{ 1322{
1210 dSTACKLEVEL; 1323 dSTACKLEVEL;
1211 static volatile int has_throw;
1212 1324
1213 /* sometimes transfer is only called to set idle_sp */ 1325 /* sometimes transfer is only called to set idle_sp */
1214 if (expect_false (!next)) 1326 if (expect_false (!next))
1215 { 1327 {
1216 ((coro_cctx *)prev)->idle_sp = STACKLEVEL; 1328 ((coro_cctx *)prev)->idle_sp = STACKLEVEL;
… …
1220 { 1332 {
1221 coro_cctx *prev__cctx; 1333 coro_cctx *prev__cctx;
1222 1334
1223 if (expect_false (prev->flags & CF_NEW)) 1335 if (expect_false (prev->flags & CF_NEW))
1224 { 1336 {
1225 /* create a new empty context */ 1337 /* create a new empty/source context */
1226 Newz (0, prev->cctx, 1, coro_cctx); 1338 prev->cctx = cctx_new_empty ();
1227 prev->flags &= ~CF_NEW; 1339 prev->flags &= ~CF_NEW;
1228 prev->flags |= CF_RUNNING; 1340 prev->flags |= CF_RUNNING;
1229 } 1341 }
1230 1342
1231 prev->flags &= ~CF_RUNNING; 1343 prev->flags &= ~CF_RUNNING;
1232 next->flags |= CF_RUNNING; 1344 next->flags |= CF_RUNNING;
1233
1234 LOCK;
1235 1345
1236 /* first get rid of the old state */ 1346 /* first get rid of the old state */
1237 save_perl (aTHX_ prev); 1347 save_perl (aTHX_ prev);
1238 1348
1239 if (expect_false (next->flags & CF_NEW)) 1349 if (expect_false (next->flags & CF_NEW))
… …
1246 else 1356 else
1247 load_perl (aTHX_ next); 1357 load_perl (aTHX_ next);
1248 1358
1249 prev__cctx = prev->cctx; 1359 prev__cctx = prev->cctx;
1250 1360
1251 /* possibly "free" the cctx */ 1361 /* possibly untie and reuse the cctx */
1252 if (expect_true ( 1362 if (expect_true (
1253 prev__cctx->idle_sp == STACKLEVEL 1363 prev__cctx->idle_sp == STACKLEVEL
1254 && !(prev__cctx->flags & CC_TRACE) 1364 && !(prev__cctx->flags & CC_TRACE)
1255 && !force_cctx 1365 && !force_cctx
1256 )) 1366 ))
1257 { 1367 {
1258 /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ 1368 /* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1259 assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); 1369 assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1260 1370
1261 prev->cctx = 0; 1371 prev->cctx = 0;
1262 1372
1263 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ 1373 /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1264 /* without this the next cctx_get might destroy the prev__cctx while still in use */ 1374 /* without this the next cctx_get might destroy the prev__cctx while still in use */
… …
1271 1381
1272 ++next->usecount; 1382 ++next->usecount;
1273 1383
1274 if (expect_true (!next->cctx)) 1384 if (expect_true (!next->cctx))
1275 next->cctx = cctx_get (aTHX); 1385 next->cctx = cctx_get (aTHX);
1276
1277 has_throw = !!next->throw;
1278 1386
1279 if (expect_false (prev__cctx != next->cctx)) 1387 if (expect_false (prev__cctx != next->cctx))
1280 { 1388 {
1281 prev__cctx->top_env = PL_top_env; 1389 prev__cctx->top_env = PL_top_env;
1282 PL_top_env = next->cctx->top_env; 1390 PL_top_env = next->cctx->top_env;
1283 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); 1391 coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1284 } 1392 }
1285 1393
1286 free_coro_mortal (aTHX); 1394 transfer_tail (aTHX);
1287 UNLOCK;
1288
1289 if (expect_false (has_throw))
1290 {
1291 struct coro *coro = SvSTATE (coro_current);
1292
1293 if (coro->throw)
1294 {
1295 SV *exception = coro->throw;
1296 coro->throw = 0;
1297 sv_setsv (ERRSV, exception);
1298 croak (0);
1299 }
1300 }
1301 } 1395 }
1302} 1396}
1303
1304struct transfer_args
1305{
1306 struct coro *prev, *next;
1307};
1308 1397
1309#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) 1398#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1310#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) 1399#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1311 1400
1312/** high level stuff ********************************************************/ 1401/** high level stuff ********************************************************/
… …
1314static int 1403static int
1315coro_state_destroy (pTHX_ struct coro *coro) 1404coro_state_destroy (pTHX_ struct coro *coro)
1316{ 1405{
1317 if (coro->flags & CF_DESTROYED) 1406 if (coro->flags & CF_DESTROYED)
1318 return 0; 1407 return 0;
1408
1409 if (coro->on_destroy)
1410 coro->on_destroy (aTHX_ coro);
1319 1411
1320 coro->flags |= CF_DESTROYED; 1412 coro->flags |= CF_DESTROYED;
1321 1413
1322 if (coro->flags & CF_READY) 1414 if (coro->flags & CF_READY)
1323 { 1415 {
1324 /* reduce nready, as destroying a ready coro effectively unreadies it */ 1416 /* reduce nready, as destroying a ready coro effectively unreadies it */
1325 /* alternative: look through all ready queues and remove the coro */ 1417 /* alternative: look through all ready queues and remove the coro */
1326 LOCK;
1327 --coro_nready; 1418 --coro_nready;
1328 UNLOCK;
1329 } 1419 }
1330 else 1420 else
1331 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ 1421 coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1332 1422
1333 if (coro->mainstack && coro->mainstack != main_mainstack) 1423 if (coro->mainstack && coro->mainstack != main_mainstack)
1334 { 1424 {
1335 struct coro temp; 1425 struct coro temp;
1336 1426
1337 if (coro->flags & CF_RUNNING) 1427 assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1338 croak ("FATAL: tried to destroy currently running coroutine");
1339 1428
1340 save_perl (aTHX_ &temp); 1429 save_perl (aTHX_ &temp);
1341 load_perl (aTHX_ coro); 1430 load_perl (aTHX_ coro);
1342 1431
1343 coro_destroy (aTHX_ coro); 1432 coro_destruct (aTHX_ coro);
1344 1433
1345 load_perl (aTHX_ &temp); 1434 load_perl (aTHX_ &temp);
1346 1435
1347 coro->slot = 0; 1436 coro->slot = 0;
1348 } 1437 }
… …
1394# define MGf_DUP 0 1483# define MGf_DUP 0
1395#endif 1484#endif
1396}; 1485};
1397 1486
1398static void 1487static void
1399prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) 1488prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv)
1400{ 1489{
1401 ta->prev = SvSTATE (prev_sv); 1490 ta->prev = SvSTATE (prev_sv);
1402 ta->next = SvSTATE (next_sv); 1491 ta->next = SvSTATE (next_sv);
1403 TRANSFER_CHECK (*ta); 1492 TRANSFER_CHECK (*ta);
1404} 1493}
1405 1494
1406static void 1495static void
1407api_transfer (SV *prev_sv, SV *next_sv) 1496api_transfer (pTHX_ SV *prev_sv, SV *next_sv)
1408{ 1497{
1409 dTHX;
1410 struct transfer_args ta; 1498 struct coro_transfer_args ta;
1411 1499
1412 prepare_transfer (aTHX_ &ta, prev_sv, next_sv); 1500 prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1413 TRANSFER (ta, 1); 1501 TRANSFER (ta, 1);
1414} 1502}
1415 1503
1504/*****************************************************************************/
1505/* gensub: simple closure generation utility */
1506
1507#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1508
1509/* create a closure from XS, returns a code reference */
1510/* the arg can be accessed via GENSUB_ARG from the callback */
1511/* the callback must use dXSARGS/XSRETURN */
1512static SV *
1513gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1514{
1515 CV *cv = (CV *)newSV (0);
1516
1517 sv_upgrade ((SV *)cv, SVt_PVCV);
1518
1519 CvANON_on (cv);
1520 CvISXSUB_on (cv);
1521 CvXSUB (cv) = xsub;
1522 GENSUB_ARG = arg;
1523
1524 return newRV_noinc ((SV *)cv);
1525}
1526
1416/** Coro ********************************************************************/ 1527/** Coro ********************************************************************/
1417 1528
1418static void 1529INLINE void
1419coro_enq (pTHX_ SV *coro_sv) 1530coro_enq (pTHX_ struct coro *coro)
1420{ 1531{
1421 av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); 1532 av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));
1422} 1533}
1423 1534
1424static SV * 1535INLINE SV *
1425coro_deq (pTHX) 1536coro_deq (pTHX)
1426{ 1537{
1427 int prio; 1538 int prio;
1428 1539
1429 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) 1540 for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
… …
1432 1543
1433 return 0; 1544 return 0;
1434} 1545}
1435 1546
1436static int 1547static int
1437api_ready (SV *coro_sv) 1548api_ready (pTHX_ SV *coro_sv)
1438{ 1549{
1439 dTHX;
1440 struct coro *coro; 1550 struct coro *coro;
1441 SV *sv_hook; 1551 SV *sv_hook;
1442 void (*xs_hook)(void); 1552 void (*xs_hook)(void);
1443 1553
1444 if (SvROK (coro_sv)) 1554 if (SvROK (coro_sv))
… …
1449 if (coro->flags & CF_READY) 1559 if (coro->flags & CF_READY)
1450 return 0; 1560 return 0;
1451 1561
1452 coro->flags |= CF_READY; 1562 coro->flags |= CF_READY;
1453 1563
1454 LOCK;
1455
1456 sv_hook = coro_nready ? 0 : coro_readyhook; 1564 sv_hook = coro_nready ? 0 : coro_readyhook;
1457 xs_hook = coro_nready ? 0 : coroapi.readyhook; 1565 xs_hook = coro_nready ? 0 : coroapi.readyhook;
1458 1566
1459 coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); 1567 coro_enq (aTHX_ coro);
1460 ++coro_nready; 1568 ++coro_nready;
1461 1569
1462 UNLOCK;
1463
1464 if (sv_hook) 1570 if (sv_hook)
1465 { 1571 {
1466 dSP; 1572 dSP;
1467 1573
1468 ENTER; 1574 ENTER;
1469 SAVETMPS; 1575 SAVETMPS;
1470 1576
1471 PUSHMARK (SP); 1577 PUSHMARK (SP);
1472 PUTBACK; 1578 PUTBACK;
1473 call_sv (sv_hook, G_DISCARD); 1579 call_sv (sv_hook, G_VOID | G_DISCARD);
1474 SPAGAIN;
1475 1580
1476 FREETMPS; 1581 FREETMPS;
1477 LEAVE; 1582 LEAVE;
1478 } 1583 }
1479 1584
… …
1482 1587
1483 return 1; 1588 return 1;
1484} 1589}
1485 1590
1486static int 1591static int
1487api_is_ready (SV *coro_sv) 1592api_is_ready (pTHX_ SV *coro_sv)
1488{ 1593{
1489 dTHX;
1490 return !!(SvSTATE (coro_sv)->flags & CF_READY); 1594 return !!(SvSTATE (coro_sv)->flags & CF_READY);
1491} 1595}
1492 1596
1493static void 1597INLINE void
1494prepare_schedule (pTHX_ struct transfer_args *ta) 1598prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1495{ 1599{
1496 SV *prev_sv, *next_sv; 1600 SV *prev_sv, *next_sv;
1497 1601
1498 for (;;) 1602 for (;;)
1499 { 1603 {
1500 LOCK;
1501 next_sv = coro_deq (aTHX); 1604 next_sv = coro_deq (aTHX);
1502 1605
1503 /* nothing to schedule: call the idle handler */ 1606 /* nothing to schedule: call the idle handler */
1504 if (expect_false (!next_sv)) 1607 if (expect_false (!next_sv))
1505 { 1608 {
1506 dSP; 1609 dSP;
1507 UNLOCK;
1508 1610
1509 ENTER; 1611 ENTER;
1510 SAVETMPS; 1612 SAVETMPS;
1511 1613
1512 PUSHMARK (SP); 1614 PUSHMARK (SP);
1513 PUTBACK; 1615 PUTBACK;
1514 call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); 1616 call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1515 SPAGAIN;
1516 1617
1517 FREETMPS; 1618 FREETMPS;
1518 LEAVE; 1619 LEAVE;
1519 continue; 1620 continue;
1520 } 1621 }
1521 1622
1522 ta->next = SvSTATE (next_sv); 1623 ta->next = SvSTATE_hv (next_sv);
1523 1624
1524 /* cannot transfer to destroyed coros, skip and look for next */ 1625 /* cannot transfer to destroyed coros, skip and look for next */
1525 if (expect_false (ta->next->flags & CF_DESTROYED)) 1626 if (expect_false (ta->next->flags & CF_DESTROYED))
1526 { 1627 {
1527 UNLOCK;
1528 SvREFCNT_dec (next_sv); 1628 SvREFCNT_dec (next_sv);
1529 /* coro_nready is already taken care of by destroy */ 1629 /* coro_nready has already been taken care of by destroy */
1530 continue; 1630 continue;
1531 } 1631 }
1532 1632
1533 --coro_nready; 1633 --coro_nready;
1534 UNLOCK;
1535 break; 1634 break;
1536 } 1635 }
1537 1636
1538 /* free this only after the transfer */ 1637 /* free this only after the transfer */
1539 prev_sv = SvRV (coro_current); 1638 prev_sv = SvRV (coro_current);
1540 ta->prev = SvSTATE (prev_sv); 1639 ta->prev = SvSTATE_hv (prev_sv);
1541 TRANSFER_CHECK (*ta); 1640 TRANSFER_CHECK (*ta);
1542 assert (ta->next->flags & CF_READY); 1641 assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1543 ta->next->flags &= ~CF_READY; 1642 ta->next->flags &= ~CF_READY;
1544 SvRV_set (coro_current, next_sv); 1643 SvRV_set (coro_current, next_sv);
1545 1644
1546 LOCK;
1547 free_coro_mortal (aTHX); 1645 free_coro_mortal (aTHX);
1548 coro_mortal = prev_sv; 1646 coro_mortal = prev_sv;
1549 UNLOCK;
1550} 1647}
1551 1648
1552static void 1649INLINE void
1553prepare_cede (pTHX_ struct transfer_args *ta) 1650prepare_cede (pTHX_ struct coro_transfer_args *ta)
1554{ 1651{
1555 api_ready (coro_current); 1652 api_ready (aTHX_ coro_current);
1556 prepare_schedule (aTHX_ ta); 1653 prepare_schedule (aTHX_ ta);
1557} 1654}
1558 1655
1656INLINE void
1657prepare_cede_notself (pTHX_ struct coro_transfer_args *ta)
1658{
1659 SV *prev = SvRV (coro_current);
1660
1661 if (coro_nready)
1662 {
1663 prepare_schedule (aTHX_ ta);
1664 api_ready (aTHX_ prev);
1665 }
1666 else
1667 prepare_nop (aTHX_ ta);
1668}
1669
1670static void
1671api_schedule (pTHX)
1672{
1673 struct coro_transfer_args ta;
1674
1675 prepare_schedule (aTHX_ &ta);
1676 TRANSFER (ta, 1);
1677}
1678
1559static int 1679static int
1560prepare_cede_notself (pTHX_ struct transfer_args *ta) 1680api_cede (pTHX)
1561{ 1681{
1562 if (coro_nready) 1682 struct coro_transfer_args ta;
1563 { 1683
1564 SV *prev = SvRV (coro_current);
1565 prepare_schedule (aTHX_ ta); 1684 prepare_cede (aTHX_ &ta);
1566 api_ready (prev); 1685
1686 if (expect_true (ta.prev != ta.next))
1687 {
1688 TRANSFER (ta, 1);
1567 return 1; 1689 return 1;
1568 } 1690 }
1569 else 1691 else
1570 return 0; 1692 return 0;
1571} 1693}
1572 1694
1573static void
1574api_schedule (void)
1575{
1576 dTHX;
1577 struct transfer_args ta;
1578
1579 prepare_schedule (aTHX_ &ta);
1580 TRANSFER (ta, 1);
1581}
1582
1583static int 1695static int
1584api_cede (void) 1696api_cede_notself (pTHX)
1585{ 1697{
1586 dTHX; 1698 if (coro_nready)
1699 {
1587 struct transfer_args ta; 1700 struct coro_transfer_args ta;
1588 1701
1589 prepare_cede (aTHX_ &ta); 1702 prepare_cede_notself (aTHX_ &ta);
1590
1591 if (expect_true (ta.prev != ta.next))
1592 {
1593 TRANSFER (ta, 1); 1703 TRANSFER (ta, 1);
1594 return 1; 1704 return 1;
1595 } 1705 }
1596 else 1706 else
1597 return 0; 1707 return 0;
1598} 1708}
1599 1709
1600static int 1710static void
1601api_cede_notself (void)
1602{
1603 dTHX;
1604 struct transfer_args ta;
1605
1606 if (prepare_cede_notself (aTHX_ &ta))
1607 {
1608 TRANSFER (ta, 1);
1609 return 1;
1610 }
1611 else
1612 return 0;
1613}
1614
1615static void
1616api_trace (SV *coro_sv, int flags) 1711api_trace (pTHX_ SV *coro_sv, int flags)
1617{ 1712{
1618 dTHX;
1619 struct coro *coro = SvSTATE (coro_sv); 1713 struct coro *coro = SvSTATE (coro_sv);
1620 1714
1621 if (flags & CC_TRACE) 1715 if (flags & CC_TRACE)
1622 { 1716 {
1623 if (!coro->cctx) 1717 if (!coro->cctx)
1624 coro->cctx = cctx_new (); 1718 coro->cctx = cctx_new_run ();
1625 else if (!(coro->cctx->flags & CC_TRACE)) 1719 else if (!(coro->cctx->flags & CC_TRACE))
1626 croak ("cannot enable tracing on coroutine with custom stack"); 1720 croak ("cannot enable tracing on coroutine with custom stack,");
1627 1721
1628 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); 1722 coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1629 } 1723 }
1630 else if (coro->cctx && coro->cctx->flags & CC_TRACE) 1724 else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1631 { 1725 {
… …
1636 else 1730 else
1637 coro->slot->runops = RUNOPS_DEFAULT; 1731 coro->slot->runops = RUNOPS_DEFAULT;
1638 } 1732 }
1639} 1733}
1640 1734
1735/*****************************************************************************/
1736/* rouse callback */
1737
1738#define CORO_MAGIC_type_rouse PERL_MAGIC_ext
1739
1740static void
1741coro_rouse_callback (pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744 SV *data = (SV *)GENSUB_ARG;
1745
1746 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1747 {
1748 /* first call, set args */
1749 int i;
1750 AV *av = newAV ();
1751 SV *coro = SvRV (data);
1752
1753 SvRV_set (data, (SV *)av);
1754 api_ready (aTHX_ coro);
1755 SvREFCNT_dec (coro);
1756
1757 /* better take a full copy of the arguments */
1758 while (items--)
1759 av_store (av, items, newSVsv (ST (items)));
1760 }
1761
1762 XSRETURN_EMPTY;
1763}
1764
1641static int 1765static int
1642coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) 1766slf_check_rouse_wait (pTHX_ struct CoroSLF *frame)
1643{ 1767{
1644 AV *padlist; 1768 SV *data = (SV *)frame->data;
1645 AV *av = (AV *)mg->mg_obj; 1769
1770 if (CORO_THROW)
1771 return 0;
1646 1772
1647 abort (); 1773 if (SvTYPE (SvRV (data)) != SVt_PVAV)
1774 return 1;
1775
1776 /* now push all results on the stack */
1777 {
1778 dSP;
1779 AV *av = (AV *)SvRV (data);
1780 int i;
1781
1782 EXTEND (SP, AvFILLp (av) + 1);
1783 for (i = 0; i <= AvFILLp (av); ++i)
1784 PUSHs (sv_2mortal (AvARRAY (av)[i]));
1785
1786 /* we have stolen the elements, so ste length to zero and free */
1787 AvFILLp (av) = -1;
1788 av_undef (av);
1789
1790 PUTBACK;
1791 }
1648 1792
1649 return 0; 1793 return 0;
1650} 1794}
1651 1795
1652static MGVTBL coro_gensub_vtbl = { 1796static void
1653 0, 0, 0, 0, 1797slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1654 coro_gensub_free 1798{
1655}; 1799 SV *cb;
1800
1801 if (items)
1802 cb = arg [0];
1803 else
1804 {
1805 struct coro *coro = SvSTATE_current;
1806
1807 if (!coro->rouse_cb)
1808 croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,");
1809
1810 cb = sv_2mortal (coro->rouse_cb);
1811 coro->rouse_cb = 0;
1812 }
1813
1814 if (!SvROK (cb)
1815 || SvTYPE (SvRV (cb)) != SVt_PVCV
1816 || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1817 croak ("Coro::rouse_wait called with illegal callback argument,");
1818
1819 {
1820 CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */
1821 SV *data = (SV *)GENSUB_ARG;
1822
1823 frame->data = (void *)data;
1824 frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1825 frame->check = slf_check_rouse_wait;
1826 }
1827}
1828
1829static SV *
1830coro_new_rouse_cb (pTHX)
1831{
1832 HV *hv = (HV *)SvRV (coro_current);
1833 struct coro *coro = SvSTATE_hv (hv);
1834 SV *data = newRV_inc ((SV *)hv);
1835 SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);
1836
1837 sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1838 SvREFCNT_dec (data); /* magicext increases the refcount */
1839
1840 SvREFCNT_dec (coro->rouse_cb);
1841 coro->rouse_cb = SvREFCNT_inc_NN (cb);
1842
1843 return cb;
1844}
1845
1846/*****************************************************************************/
1847/* schedule-like-function opcode (SLF) */
1848
1849static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */
1850static const CV *slf_cv;
1851static SV **slf_argv;
1852static int slf_argc, slf_arga; /* count, allocated */
1853static I32 slf_ax; /* top of stack, for restore */
1854
1855/* this restores the stack in the case we patched the entersub, to */
1856/* recreate the stack frame as perl will on following calls */
1857/* since entersub cleared the stack */
1858static OP *
1859pp_restore (pTHX)
1860{
1861 int i;
1862 SV **SP = PL_stack_base + slf_ax;
1863
1864 PUSHMARK (SP);
1865
1866 EXTEND (SP, slf_argc + 1);
1867
1868 for (i = 0; i < slf_argc; ++i)
1869 PUSHs (sv_2mortal (slf_argv [i]));
1870
1871 PUSHs ((SV *)CvGV (slf_cv));
1872
1873 RETURNOP (slf_restore.op_first);
1874}
1875
1876static void
1877slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta)
1878{
1879 SV **arg = (SV **)slf_frame.data;
1880
1881 prepare_transfer (aTHX_ ta, arg [0], arg [1]);
1882}
1883
1884static void
1885slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1886{
1887 if (items != 2)
1888 croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items);
1889
1890 frame->prepare = slf_prepare_transfer;
1891 frame->check = slf_check_nop;
1892 frame->data = (void *)arg; /* let's hope it will stay valid */
1893}
1894
1895static void
1896slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1897{
1898 frame->prepare = prepare_schedule;
1899 frame->check = slf_check_nop;
1900}
1901
1902static void
1903slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1904{
1905 frame->prepare = prepare_cede;
1906 frame->check = slf_check_nop;
1907}
1908
1909static void
1910slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1911{
1912 frame->prepare = prepare_cede_notself;
1913 frame->check = slf_check_nop;
1914}
1915
1916/*
1917 * these not obviously related functions are all rolled into one
1918 * function to increase chances that they all will call transfer with the same
1919 * stack offset
1920 * SLF stands for "schedule-like-function".
1921 */
1922static OP *
1923pp_slf (pTHX)
1924{
1925 I32 checkmark; /* mark SP to see how many elements check has pushed */
1926
1927 /* set up the slf frame, unless it has already been set-up */
1928 /* the latter happens when a new coro has been started */
1929 /* or when a new cctx was attached to an existing coroutine */
1930 if (expect_true (!slf_frame.prepare))
1931 {
1932 /* first iteration */
1933 dSP;
1934 SV **arg = PL_stack_base + TOPMARK + 1;
1935 int items = SP - arg; /* args without function object */
1936 SV *gv = *sp;
1937
1938 /* do a quick consistency check on the "function" object, and if it isn't */
1939 /* for us, divert to the real entersub */
1940 if (SvTYPE (gv) != SVt_PVGV
1941 || !GvCV (gv)
1942 || !(CvFLAGS (GvCV (gv)) & CVf_SLF))
1943 return PL_ppaddr[OP_ENTERSUB](aTHX);
1944
1945 if (!(PL_op->op_flags & OPf_STACKED))
1946 {
1947 /* ampersand-form of call, use @_ instead of stack */
1948 AV *av = GvAV (PL_defgv);
1949 arg = AvARRAY (av);
1950 items = AvFILLp (av) + 1;
1951 }
1952
1953 /* now call the init function, which needs to set up slf_frame */
1954 ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr)
1955 (aTHX_ &slf_frame, GvCV (gv), arg, items);
1956
1957 /* pop args */
1958 SP = PL_stack_base + POPMARK;
1959
1960 PUTBACK;
1961 }
1962
1963 /* now that we have a slf_frame, interpret it! */
1964 /* we use a callback system not to make the code needlessly */
1965 /* complicated, but so we can run multiple perl coros from one cctx */
1966
1967 do
1968 {
1969 struct coro_transfer_args ta;
1970
1971 slf_frame.prepare (aTHX_ &ta);
1972 TRANSFER (ta, 0);
1973
1974 checkmark = PL_stack_sp - PL_stack_base;
1975 }
1976 while (slf_frame.check (aTHX_ &slf_frame));
1977
1978 slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */
1979
1980 /* exception handling */
1981 if (expect_false (CORO_THROW))
1982 {
1983 SV *exception = sv_2mortal (CORO_THROW);
1984
1985 CORO_THROW = 0;
1986 sv_setsv (ERRSV, exception);
1987 croak (0);
1988 }
1989
1990 /* return value handling - mostly like entersub */
1991 /* make sure we put something on the stack in scalar context */
1992 if (GIMME_V == G_SCALAR)
1993 {
1994 dSP;
1995 SV **bot = PL_stack_base + checkmark;
1996
1997 if (sp == bot) /* too few, push undef */
1998 bot [1] = &PL_sv_undef;
1999 else if (sp != bot + 1) /* too many, take last one */
2000 bot [1] = *sp;
2001
2002 SP = bot + 1;
2003
2004 PUTBACK;
2005 }
2006
2007 return NORMAL;
2008}
2009
2010static void
2011api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax)
2012{
2013 int i;
2014 SV **arg = PL_stack_base + ax;
2015 int items = PL_stack_sp - arg + 1;
2016
2017 assert (("FATAL: SLF call with illegal CV value", !CvANON (cv)));
2018
2019 if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB]
2020 && PL_op->op_ppaddr != pp_slf)
2021 croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught");
2022
2023 CvFLAGS (cv) |= CVf_SLF;
2024 CvXSUBANY (cv).any_ptr = (void *)init_cb;
2025 slf_cv = cv;
2026
2027 /* we patch the op, and then re-run the whole call */
2028 /* we have to put the same argument on the stack for this to work */
2029 /* and this will be done by pp_restore */
2030 slf_restore.op_next = (OP *)&slf_restore;
2031 slf_restore.op_type = OP_CUSTOM;
2032 slf_restore.op_ppaddr = pp_restore;
2033 slf_restore.op_first = PL_op;
2034
2035 slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */
2036
2037 if (PL_op->op_flags & OPf_STACKED)
2038 {
2039 if (items > slf_arga)
2040 {
2041 slf_arga = items;
2042 free (slf_argv);
2043 slf_argv = malloc (slf_arga * sizeof (SV *));
2044 }
2045
2046 slf_argc = items;
2047
2048 for (i = 0; i < items; ++i)
2049 slf_argv [i] = SvREFCNT_inc (arg [i]);
2050 }
2051 else
2052 slf_argc = 0;
2053
2054 PL_op->op_ppaddr = pp_slf;
2055 PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */
2056
2057 PL_op = (OP *)&slf_restore;
2058}
1656 2059
1657/*****************************************************************************/ 2060/*****************************************************************************/
1658/* PerlIO::cede */ 2061/* PerlIO::cede */
1659 2062
1660typedef struct 2063typedef struct
… …
1688 PerlIOCede *self = PerlIOSelf (f, PerlIOCede); 2091 PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
1689 double now = nvtime (); 2092 double now = nvtime ();
1690 2093
1691 if (now >= self->next) 2094 if (now >= self->next)
1692 { 2095 {
1693 api_cede (); 2096 api_cede (aTHX);
1694 self->next = now + self->every; 2097 self->next = now + self->every;
1695 } 2098 }
1696 2099
1697 return PerlIOBuf_flush (aTHX_ f); 2100 return PerlIOBuf_flush (aTHX_ f);
1698} 2101}
… …
1727 PerlIOBuf_get_ptr, 2130 PerlIOBuf_get_ptr,
1728 PerlIOBuf_get_cnt, 2131 PerlIOBuf_get_cnt,
1729 PerlIOBuf_set_ptrcnt, 2132 PerlIOBuf_set_ptrcnt,
1730}; 2133};
1731 2134
2135/*****************************************************************************/
2136/* Coro::Semaphore & Coro::Signal */
2137
2138static SV *
2139coro_waitarray_new (pTHX_ int count)
2140{
2141 /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */
2142 AV *av = newAV ();
2143 SV **ary;
2144
2145 /* unfortunately, building manually saves memory */
2146 Newx (ary, 2, SV *);
2147 AvALLOC (av) = ary;
2148 /*AvARRAY (av) = ary;*/
2149 SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */
2150 AvMAX (av) = 1;
2151 AvFILLp (av) = 0;
2152 ary [0] = newSViv (count);
2153
2154 return newRV_noinc ((SV *)av);
2155}
2156
2157/* semaphore */
2158
2159static void
2160coro_semaphore_adjust (pTHX_ AV *av, IV adjust)
2161{
2162 SV *count_sv = AvARRAY (av)[0];
2163 IV count = SvIVX (count_sv);
2164
2165 count += adjust;
2166 SvIVX (count_sv) = count;
2167
2168 /* now wake up as many waiters as are expected to lock */
2169 while (count > 0 && AvFILLp (av) > 0)
2170 {
2171 SV *cb;
2172
2173 /* swap first two elements so we can shift a waiter */
2174 AvARRAY (av)[0] = AvARRAY (av)[1];
2175 AvARRAY (av)[1] = count_sv;
2176 cb = av_shift (av);
2177
2178 if (SvOBJECT (cb))
2179 {
2180 api_ready (aTHX_ cb);
2181 --count;
2182 }
2183 else if (SvTYPE (cb) == SVt_PVCV)
2184 {
2185 dSP;
2186 PUSHMARK (SP);
2187 XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
2188 PUTBACK;
2189 call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
2190 }
2191
2192 SvREFCNT_dec (cb);
2193 }
2194}
2195
2196static void
2197coro_semaphore_on_destroy (pTHX_ struct coro *coro)
2198{
2199 /* call $sem->adjust (0) to possibly wake up some other waiters */
2200 coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);
2201}
2202
2203static int
2204slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2205{
2206 AV *av = (AV *)frame->data;
2207 SV *count_sv = AvARRAY (av)[0];
2208
2209 /* if we are about to throw, don't actually acquire the lock, just throw */
2210 if (CORO_THROW)
2211 return 0;
2212 else if (SvIVX (count_sv) > 0)
2213 {
2214 SvSTATE_current->on_destroy = 0;
2215
2216 if (acquire)
2217 SvIVX (count_sv) = SvIVX (count_sv) - 1;
2218 else
2219 coro_semaphore_adjust (aTHX_ av, 0);
2220
2221 return 0;
2222 }
2223 else
2224 {
2225 int i;
2226 /* if we were woken up but can't down, we look through the whole */
2227 /* waiters list and only add us if we aren't in there already */
2228 /* this avoids some degenerate memory usage cases */
2229
2230 for (i = 1; i <= AvFILLp (av); ++i)
2231 if (AvARRAY (av)[i] == SvRV (coro_current))
2232 return 1;
2233
2234 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2235 return 1;
2236 }
2237}
2238
2239static int
2240slf_check_semaphore_down (pTHX_ struct CoroSLF *frame)
2241{
2242 return slf_check_semaphore_down_or_wait (aTHX_ frame, 1);
2243}
2244
2245static int
2246slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame)
2247{
2248 return slf_check_semaphore_down_or_wait (aTHX_ frame, 0);
2249}
2250
2251static void
2252slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2253{
2254 AV *av = (AV *)SvRV (arg [0]);
2255
2256 if (SvIVX (AvARRAY (av)[0]) > 0)
2257 {
2258 frame->data = (void *)av;
2259 frame->prepare = prepare_nop;
2260 }
2261 else
2262 {
2263 av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2264
2265 frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2266 frame->prepare = prepare_schedule;
2267
2268 /* to avoid race conditions when a woken-up coro gets terminated */
2269 /* we arrange for a temporary on_destroy that calls adjust (0) */
2270 SvSTATE_current->on_destroy = coro_semaphore_on_destroy;
2271 }
2272}
2273
2274static void
2275slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2276{
2277 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2278 frame->check = slf_check_semaphore_down;
2279}
2280
2281static void
2282slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2283{
2284 if (items >= 2)
2285 {
2286 /* callback form */
2287 AV *av = (AV *)SvRV (arg [0]);
2288 HV *st;
2289 GV *gvp;
2290 CV *cb_cv = sv_2cv (arg [1], &st, &gvp, 0);
2291
2292 av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));
2293
2294 if (SvIVX (AvARRAY (av)[0]) > 0)
2295 coro_semaphore_adjust (aTHX_ av, 0);
2296
2297 frame->prepare = prepare_nop;
2298 frame->check = slf_check_nop;
2299 }
2300 else
2301 {
2302 slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items);
2303 frame->check = slf_check_semaphore_wait;
2304 }
2305}
2306
2307/* signal */
2308
2309static void
2310coro_signal_wake (pTHX_ AV *av, int count)
2311{
2312 SvIVX (AvARRAY (av)[0]) = 0;
2313
2314 /* now signal count waiters */
2315 while (count > 0 && AvFILLp (av) > 0)
2316 {
2317 SV *cb;
2318
2319 /* swap first two elements so we can shift a waiter */
2320 cb = AvARRAY (av)[0];
2321 AvARRAY (av)[0] = AvARRAY (av)[1];
2322 AvARRAY (av)[1] = cb;
2323
2324 cb = av_shift (av);
2325
2326 api_ready (aTHX_ cb);
2327 sv_setiv (cb, 0); /* signal waiter */
2328 SvREFCNT_dec (cb);
2329
2330 --count;
2331 }
2332}
2333
2334static int
2335slf_check_signal_wait (pTHX_ struct CoroSLF *frame)
2336{
2337 /* if we are about to throw, also stop waiting */
2338 return SvROK ((SV *)frame->data) && !CORO_THROW;
2339}
2340
2341static void
2342slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2343{
2344 AV *av = (AV *)SvRV (arg [0]);
2345
2346 if (SvIVX (AvARRAY (av)[0]))
2347 {
2348 SvIVX (AvARRAY (av)[0]) = 0;
2349 frame->prepare = prepare_nop;
2350 frame->check = slf_check_nop;
2351 }
2352 else
2353 {
2354 SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */
2355
2356 av_push (av, waiter);
2357
2358 frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2359 frame->prepare = prepare_schedule;
2360 frame->check = slf_check_signal_wait;
2361 }
2362}
2363
2364/*****************************************************************************/
2365/* Coro::AIO */
2366
2367#define CORO_MAGIC_type_aio PERL_MAGIC_ext
2368
2369/* helper storage struct */
2370struct io_state
2371{
2372 int errorno;
2373 I32 laststype; /* U16 in 5.10.0 */
2374 int laststatval;
2375 Stat_t statcache;
2376};
2377
2378static void
2379coro_aio_callback (pTHX_ CV *cv)
2380{
2381 dXSARGS;
2382 AV *state = (AV *)GENSUB_ARG;
2383 SV *coro = av_pop (state);
2384 SV *data_sv = newSV (sizeof (struct io_state));
2385
2386 av_extend (state, items);
2387
2388 sv_upgrade (data_sv, SVt_PV);
2389 SvCUR_set (data_sv, sizeof (struct io_state));
2390 SvPOK_only (data_sv);
2391
2392 {
2393 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2394
2395 data->errorno = errno;
2396 data->laststype = PL_laststype;
2397 data->laststatval = PL_laststatval;
2398 data->statcache = PL_statcache;
2399 }
2400
2401 /* now build the result vector out of all the parameters and the data_sv */
2402 {
2403 int i;
2404
2405 for (i = 0; i < items; ++i)
2406 av_push (state, SvREFCNT_inc_NN (ST (i)));
2407 }
2408
2409 av_push (state, data_sv);
2410
2411 api_ready (aTHX_ coro);
2412 SvREFCNT_dec (coro);
2413 SvREFCNT_dec ((AV *)state);
2414}
2415
2416static int
2417slf_check_aio_req (pTHX_ struct CoroSLF *frame)
2418{
2419 AV *state = (AV *)frame->data;
2420
2421 /* if we are about to throw, return early */
2422 /* this does not cancel the aio request, but at least */
2423 /* it quickly returns */
2424 if (CORO_THROW)
2425 return 0;
2426
2427 /* one element that is an RV? repeat! */
2428 if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0]))
2429 return 1;
2430
2431 /* restore status */
2432 {
2433 SV *data_sv = av_pop (state);
2434 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2435
2436 errno = data->errorno;
2437 PL_laststype = data->laststype;
2438 PL_laststatval = data->laststatval;
2439 PL_statcache = data->statcache;
2440
2441 SvREFCNT_dec (data_sv);
2442 }
2443
2444 /* push result values */
2445 {
2446 dSP;
2447 int i;
2448
2449 EXTEND (SP, AvFILLp (state) + 1);
2450 for (i = 0; i <= AvFILLp (state); ++i)
2451 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i])));
2452
2453 PUTBACK;
2454 }
2455
2456 return 0;
2457}
2458
2459static void
2460slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2461{
2462 AV *state = (AV *)sv_2mortal ((SV *)newAV ());
2463 SV *coro_hv = SvRV (coro_current);
2464 struct coro *coro = SvSTATE_hv (coro_hv);
2465
2466 /* put our coroutine id on the state arg */
2467 av_push (state, SvREFCNT_inc_NN (coro_hv));
2468
2469 /* first see whether we have a non-zero priority and set it as AIO prio */
2470 if (coro->prio)
2471 {
2472 dSP;
2473
2474 static SV *prio_cv;
2475 static SV *prio_sv;
2476
2477 if (expect_false (!prio_cv))
2478 {
2479 prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0);
2480 prio_sv = newSViv (0);
2481 }
2482
2483 PUSHMARK (SP);
2484 sv_setiv (prio_sv, coro->prio);
2485 XPUSHs (prio_sv);
2486
2487 PUTBACK;
2488 call_sv (prio_cv, G_VOID | G_DISCARD);
2489 }
2490
2491 /* now call the original request */
2492 {
2493 dSP;
2494 CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj;
2495 int i;
2496
2497 PUSHMARK (SP);
2498
2499 /* first push all args to the stack */
2500 EXTEND (SP, items + 1);
2501
2502 for (i = 0; i < items; ++i)
2503 PUSHs (arg [i]);
2504
2505 /* now push the callback closure */
2506 PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2507
2508 /* now call the AIO function - we assume our request is uncancelable */
2509 PUTBACK;
2510 call_sv ((SV *)req, G_VOID | G_DISCARD);
2511 }
2512
2513 /* now that the requets is going, we loop toll we have a result */
2514 frame->data = (void *)state;
2515 frame->prepare = prepare_schedule;
2516 frame->check = slf_check_aio_req;
2517}
2518
2519static void
2520coro_aio_req_xs (pTHX_ CV *cv)
2521{
2522 dXSARGS;
2523
2524 CORO_EXECUTE_SLF_XS (slf_init_aio_req);
2525
2526 XSRETURN_EMPTY;
2527}
2528
2529/*****************************************************************************/
1732 2530
1733MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ 2531MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1734 2532
1735PROTOTYPES: DISABLE 2533PROTOTYPES: DISABLE
1736 2534
1737BOOT: 2535BOOT:
1738{ 2536{
1739#ifdef USE_ITHREADS 2537#ifdef USE_ITHREADS
1740 MUTEX_INIT (&coro_mutex); 2538# if CORO_PTHREAD
2539 coro_thx = PERL_GET_CONTEXT;
2540# endif
1741#endif 2541#endif
1742 BOOT_PAGESIZE; 2542 BOOT_PAGESIZE;
1743 2543
1744 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); 2544 irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1745 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); 2545 stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
… …
1763 main_top_env = PL_top_env; 2563 main_top_env = PL_top_env;
1764 2564
1765 while (main_top_env->je_prev) 2565 while (main_top_env->je_prev)
1766 main_top_env = main_top_env->je_prev; 2566 main_top_env = main_top_env->je_prev;
1767 2567
2568 {
2569 SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2570
2571 if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2572 hv_store_ent (PL_custom_op_names, slf,
2573 newSVpv ("coro_slf", 0), 0);
2574
2575 if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2576 hv_store_ent (PL_custom_op_descs, slf,
2577 newSVpv ("coro schedule like function", 0), 0);
2578 }
2579
1768 coroapi.ver = CORO_API_VERSION; 2580 coroapi.ver = CORO_API_VERSION;
1769 coroapi.rev = CORO_API_REVISION; 2581 coroapi.rev = CORO_API_REVISION;
2582
1770 coroapi.transfer = api_transfer; 2583 coroapi.transfer = api_transfer;
2584
2585 coroapi.sv_state = SvSTATE_;
2586 coroapi.execute_slf = api_execute_slf;
2587 coroapi.prepare_nop = prepare_nop;
2588 coroapi.prepare_schedule = prepare_schedule;
2589 coroapi.prepare_cede = prepare_cede;
2590 coroapi.prepare_cede_notself = prepare_cede_notself;
1771 2591
1772 { 2592 {
1773 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); 2593 SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1774 2594
1775 if (!svp) croak ("Time::HiRes is required"); 2595 if (!svp) croak ("Time::HiRes is required");
… …
1808 av_push (coro->args, newSVsv (ST (i))); 2628 av_push (coro->args, newSVsv (ST (i)));
1809} 2629}
1810 OUTPUT: 2630 OUTPUT:
1811 RETVAL 2631 RETVAL
1812 2632
1813# these not obviously related functions are all rolled into the same xs
1814# function to increase chances that they all will call transfer with the same
1815# stack offset
1816void 2633void
1817_set_stacklevel (...) 2634transfer (...)
1818 ALIAS: 2635 PROTOTYPE: $$
1819 Coro::State::transfer = 1 2636 CODE:
1820 Coro::schedule = 2 2637 CORO_EXECUTE_SLF_XS (slf_init_transfer);
1821 Coro::cede = 3
1822 Coro::cede_notself = 4
1823 CODE:
1824{
1825 struct transfer_args ta;
1826
1827 PUTBACK;
1828 switch (ix)
1829 {
1830 case 0:
1831 ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1832 ta.next = 0;
1833 break;
1834
1835 case 1:
1836 if (items != 2)
1837 croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1838
1839 prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1840 break;
1841
1842 case 2:
1843 prepare_schedule (aTHX_ &ta);
1844 break;
1845
1846 case 3:
1847 prepare_cede (aTHX_ &ta);
1848 break;
1849
1850 case 4:
1851 if (!prepare_cede_notself (aTHX_ &ta))
1852 XSRETURN_EMPTY;
1853
1854 break;
1855 }
1856 SPAGAIN;
1857
1858 BARRIER;
1859 PUTBACK;
1860 TRANSFER (ta, 0);
1861 SPAGAIN; /* might be the sp of a different coroutine now */
1862 /* be extra careful not to ever do anything after TRANSFER */
1863}
1864 2638
1865bool 2639bool
1866_destroy (SV *coro_sv) 2640_destroy (SV *coro_sv)
1867 CODE: 2641 CODE:
1868 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); 2642 RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
… …
1875 CODE: 2649 CODE:
1876 _exit (code); 2650 _exit (code);
1877 2651
1878int 2652int
1879cctx_stacksize (int new_stacksize = 0) 2653cctx_stacksize (int new_stacksize = 0)
2654 PROTOTYPE: ;$
1880 CODE: 2655 CODE:
1881 RETVAL = coro_stacksize; 2656 RETVAL = cctx_stacksize;
1882 if (new_stacksize) 2657 if (new_stacksize)
2658 {
1883 coro_stacksize = new_stacksize; 2659 cctx_stacksize = new_stacksize;
2660 ++cctx_gen;
2661 }
1884 OUTPUT: 2662 OUTPUT:
1885 RETVAL 2663 RETVAL
1886 2664
1887int 2665int
2666cctx_max_idle (int max_idle = 0)
2667 PROTOTYPE: ;$
2668 CODE:
2669 RETVAL = cctx_max_idle;
2670 if (max_idle > 1)
2671 cctx_max_idle = max_idle;
2672 OUTPUT:
2673 RETVAL
2674
2675int
1888cctx_count () 2676cctx_count ()
2677 PROTOTYPE:
1889 CODE: 2678 CODE:
1890 RETVAL = cctx_count; 2679 RETVAL = cctx_count;
1891 OUTPUT: 2680 OUTPUT:
1892 RETVAL 2681 RETVAL
1893 2682
1894int 2683int
1895cctx_idle () 2684cctx_idle ()
2685 PROTOTYPE:
1896 CODE: 2686 CODE:
1897 RETVAL = cctx_idle; 2687 RETVAL = cctx_idle;
1898 OUTPUT: 2688 OUTPUT:
1899 RETVAL 2689 RETVAL
1900 2690
1901void 2691void
1902list () 2692list ()
2693 PROTOTYPE:
1903 PPCODE: 2694 PPCODE:
1904{ 2695{
1905 struct coro *coro; 2696 struct coro *coro;
1906 for (coro = coro_first; coro; coro = coro->next) 2697 for (coro = coro_first; coro; coro = coro->next)
1907 if (coro->hv) 2698 if (coro->hv)
… …
1966 RETVAL = boolSV (coro->flags & ix); 2757 RETVAL = boolSV (coro->flags & ix);
1967 OUTPUT: 2758 OUTPUT:
1968 RETVAL 2759 RETVAL
1969 2760
1970void 2761void
2762throw (Coro::State self, SV *throw = &PL_sv_undef)
2763 PROTOTYPE: $;$
2764 CODE:
2765{
2766 struct coro *current = SvSTATE_current;
2767 SV **throwp = self == current ? &CORO_THROW : &self->except;
2768 SvREFCNT_dec (*throwp);
2769 *throwp = SvOK (throw) ? newSVsv (throw) : 0;
2770}
2771
2772void
1971api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) 2773api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
2774 PROTOTYPE: $;$
2775 C_ARGS: aTHX_ coro, flags
1972 2776
1973SV * 2777SV *
1974has_cctx (Coro::State coro) 2778has_cctx (Coro::State coro)
1975 PROTOTYPE: $ 2779 PROTOTYPE: $
1976 CODE: 2780 CODE:
… …
1984 CODE: 2788 CODE:
1985 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; 2789 RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1986 OUTPUT: 2790 OUTPUT:
1987 RETVAL 2791 RETVAL
1988 2792
1989IV 2793UV
1990rss (Coro::State coro) 2794rss (Coro::State coro)
1991 PROTOTYPE: $ 2795 PROTOTYPE: $
1992 ALIAS: 2796 ALIAS:
1993 usecount = 1 2797 usecount = 1
1994 CODE: 2798 CODE:
… …
2000 OUTPUT: 2804 OUTPUT:
2001 RETVAL 2805 RETVAL
2002 2806
2003void 2807void
2004force_cctx () 2808force_cctx ()
2809 PROTOTYPE:
2005 CODE: 2810 CODE:
2006 struct coro *coro = SvSTATE (coro_current);
2007 coro->cctx->idle_sp = 0; 2811 SvSTATE_current->cctx->idle_sp = 0;
2008
2009void
2010throw (Coro::State self, SV *throw = &PL_sv_undef)
2011 PROTOTYPE: $;$
2012 CODE:
2013 SvREFCNT_dec (self->throw);
2014 self->throw = SvOK (throw) ? newSVsv (throw) : 0;
2015 2812
2016void 2813void
2017swap_defsv (Coro::State self) 2814swap_defsv (Coro::State self)
2018 PROTOTYPE: $ 2815 PROTOTYPE: $
2019 ALIAS: 2816 ALIAS:
2020 swap_defav = 1 2817 swap_defav = 1
2021 CODE: 2818 CODE:
2022 if (!self->slot) 2819 if (!self->slot)
2023 croak ("cannot swap state with coroutine that has no saved state"); 2820 croak ("cannot swap state with coroutine that has no saved state,");
2024 else 2821 else
2025 { 2822 {
2026 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); 2823 SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
2027 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; 2824 SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2028 2825
2029 SV *tmp = *src; *src = *dst; *dst = tmp; 2826 SV *tmp = *src; *src = *dst; *dst = tmp;
2030 } 2827 }
2828
2031 2829
2032MODULE = Coro::State PACKAGE = Coro 2830MODULE = Coro::State PACKAGE = Coro
2033 2831
2034BOOT: 2832BOOT:
2035{ 2833{
… …
2053 2851
2054 for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) 2852 for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2055 coro_ready[i] = newAV (); 2853 coro_ready[i] = newAV ();
2056 2854
2057 { 2855 {
2058 SV *sv = perl_get_sv ("Coro::API", TRUE); 2856 SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2059 perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
2060 2857
2061 coroapi.schedule = api_schedule; 2858 coroapi.schedule = api_schedule;
2062 coroapi.cede = api_cede; 2859 coroapi.cede = api_cede;
2063 coroapi.cede_notself = api_cede_notself; 2860 coroapi.cede_notself = api_cede_notself;
2064 coroapi.ready = api_ready; 2861 coroapi.ready = api_ready;
2065 coroapi.is_ready = api_is_ready; 2862 coroapi.is_ready = api_is_ready;
2066 coroapi.nready = &coro_nready; 2863 coroapi.nready = coro_nready;
2067 coroapi.current = coro_current; 2864 coroapi.current = coro_current;
2068 2865
2069 GCoroAPI = &coroapi; 2866 /*GCoroAPI = &coroapi;*/
2070 sv_setiv (sv, (IV)&coroapi); 2867 sv_setiv (sv, (IV)&coroapi);
2071 SvREADONLY_on (sv); 2868 SvREADONLY_on (sv);
2072 } 2869 }
2073} 2870}
2871
2872void
2873schedule (...)
2874 CODE:
2875 CORO_EXECUTE_SLF_XS (slf_init_schedule);
2876
2877void
2878cede (...)
2879 CODE:
2880 CORO_EXECUTE_SLF_XS (slf_init_cede);
2881
2882void
2883cede_notself (...)
2884 CODE:
2885 CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
2074 2886
2075void 2887void
2076_set_current (SV *current) 2888_set_current (SV *current)
2077 PROTOTYPE: $ 2889 PROTOTYPE: $
2078 CODE: 2890 CODE:
… …
2081 2893
2082void 2894void
2083_set_readyhook (SV *hook) 2895_set_readyhook (SV *hook)
2084 PROTOTYPE: $ 2896 PROTOTYPE: $
2085 CODE: 2897 CODE:
2086 LOCK;
2087 SvREFCNT_dec (coro_readyhook); 2898 SvREFCNT_dec (coro_readyhook);
2088 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; 2899 coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
2089 UNLOCK;
2090 2900
2091int 2901int
2092prio (Coro::State coro, int newprio = 0) 2902prio (Coro::State coro, int newprio = 0)
2903 PROTOTYPE: $;$
2093 ALIAS: 2904 ALIAS:
2094 nice = 1 2905 nice = 1
2095 CODE: 2906 CODE:
2096{ 2907{
2097 RETVAL = coro->prio; 2908 RETVAL = coro->prio;
… …
2112 2923
2113SV * 2924SV *
2114ready (SV *self) 2925ready (SV *self)
2115 PROTOTYPE: $ 2926 PROTOTYPE: $
2116 CODE: 2927 CODE:
2117 RETVAL = boolSV (api_ready (self)); 2928 RETVAL = boolSV (api_ready (aTHX_ self));
2118 OUTPUT: 2929 OUTPUT:
2119 RETVAL 2930 RETVAL
2120 2931
2121int 2932int
2122nready (...) 2933nready (...)
… …
2129# for async_pool speedup 2940# for async_pool speedup
2130void 2941void
2131_pool_1 (SV *cb) 2942_pool_1 (SV *cb)
2132 CODE: 2943 CODE:
2133{ 2944{
2134 struct coro *coro = SvSTATE (coro_current);
2135 HV *hv = (HV *)SvRV (coro_current); 2945 HV *hv = (HV *)SvRV (coro_current);
2946 struct coro *coro = SvSTATE_hv ((SV *)hv);
2136 AV *defav = GvAV (PL_defgv); 2947 AV *defav = GvAV (PL_defgv);
2137 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); 2948 SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
2138 AV *invoke_av; 2949 AV *invoke_av;
2139 int i, len; 2950 int i, len;
2140 2951
… …
2161 { 2972 {
2162 av_fill (defav, len - 1); 2973 av_fill (defav, len - 1);
2163 for (i = 0; i < len; ++i) 2974 for (i = 0; i < len; ++i)
2164 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); 2975 av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
2165 } 2976 }
2166
2167 SvREFCNT_dec (invoke);
2168} 2977}
2169 2978
2170void 2979void
2171_pool_2 (SV *cb) 2980_pool_2 (SV *cb)
2172 CODE: 2981 CODE:
2173{ 2982{
2174 struct coro *coro = SvSTATE (coro_current); 2983 HV *hv = (HV *)SvRV (coro_current);
2984 struct coro *coro = SvSTATE_hv ((SV *)hv);
2175 2985
2176 sv_setsv (cb, &PL_sv_undef); 2986 sv_setsv (cb, &PL_sv_undef);
2177 2987
2178 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; 2988 SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
2179 coro->saved_deffh = 0; 2989 coro->saved_deffh = 0;
2180 2990
2181 if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) 2991 if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2182 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) 2992 || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2183 { 2993 {
2184 SV *old = PL_diehook; 2994 SV *old = PL_diehook;
2185 PL_diehook = 0; 2995 PL_diehook = 0;
2186 SvREFCNT_dec (old); 2996 SvREFCNT_dec (old);
2187 croak ("\3async_pool terminate\2\n"); 2997 croak ("\3async_pool terminate\2\n");
2188 } 2998 }
2189 2999
2190 av_clear (GvAV (PL_defgv)); 3000 av_clear (GvAV (PL_defgv));
2191 hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, 3001 hv_store (hv, "desc", sizeof ("desc") - 1,
2192 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); 3002 newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
2193 3003
2194 coro->prio = 0; 3004 coro->prio = 0;
2195 3005
2196 if (coro->cctx && (coro->cctx->flags & CC_TRACE)) 3006 if (coro->cctx && (coro->cctx->flags & CC_TRACE))
2197 api_trace (coro_current, 0); 3007 api_trace (aTHX_ coro_current, 0);
2198 3008
2199 av_push (av_async_pool, newSVsv (coro_current)); 3009 av_push (av_async_pool, newSVsv (coro_current));
2200} 3010}
2201 3011
2202#if 0
2203
2204void
2205_generator_call (...)
2206 PROTOTYPE: @
2207 PPCODE:
2208 fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
2209 xxxx
2210 abort ();
2211
2212SV * 3012SV *
2213gensub (SV *sub, ...) 3013rouse_cb ()
2214 PROTOTYPE: &;@ 3014 PROTOTYPE:
2215 CODE: 3015 CODE:
2216{ 3016 RETVAL = coro_new_rouse_cb (aTHX);
2217 struct coro *coro;
2218 MAGIC *mg;
2219 CV *xcv;
2220 CV *ncv = (CV *)newSV_type (SVt_PVCV);
2221 int i;
2222
2223 CvGV (ncv) = CvGV (cv);
2224 CvFILE (ncv) = CvFILE (cv);
2225
2226 Newz (0, coro, 1, struct coro);
2227 coro->args = newAV ();
2228 coro->flags = CF_NEW;
2229
2230 av_extend (coro->args, items - 1);
2231 for (i = 1; i < items; i++)
2232 av_push (coro->args, newSVsv (ST (i)));
2233
2234 CvISXSUB_on (ncv);
2235 CvXSUBANY (ncv).any_ptr = (void *)coro;
2236
2237 xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
2238
2239 CvXSUB (ncv) = CvXSUB (xcv);
2240 CvANON_on (ncv);
2241
2242 mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
2243 RETVAL = newRV_noinc ((SV *)ncv);
2244}
2245 OUTPUT: 3017 OUTPUT:
2246 RETVAL 3018 RETVAL
2247 3019
2248#endif
2249
2250
2251MODULE = Coro::State PACKAGE = Coro::AIO
2252
2253void 3020void
2254_get_state (SV *self) 3021rouse_wait (...)
3022 PROTOTYPE: ;$
2255 PPCODE: 3023 PPCODE:
2256{ 3024 CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
2257 AV *defav = GvAV (PL_defgv);
2258 AV *av = newAV ();
2259 int i;
2260 SV *data_sv = newSV (sizeof (struct io_state));
2261 struct io_state *data = (struct io_state *)SvPVX (data_sv);
2262 SvCUR_set (data_sv, sizeof (struct io_state));
2263 SvPOK_only (data_sv);
2264 3025
2265 data->errorno = errno;
2266 data->laststype = PL_laststype;
2267 data->laststatval = PL_laststatval;
2268 data->statcache = PL_statcache;
2269 3026
2270 av_extend (av, AvFILLp (defav) + 1 + 1); 3027MODULE = Coro::State PACKAGE = PerlIO::cede
2271 3028
2272 for (i = 0; i <= AvFILLp (defav); ++i) 3029BOOT:
2273 av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); 3030 PerlIO_define_layer (aTHX_ &PerlIO_cede);
2274 3031
2275 av_push (av, data_sv);
2276 3032
2277 XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); 3033MODULE = Coro::State PACKAGE = Coro::Semaphore
2278 3034
2279 api_ready (self); 3035SV *
2280} 3036new (SV *klass, SV *count = 0)
3037 CODE:
3038 RETVAL = sv_bless (
3039 coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),
3040 GvSTASH (CvGV (cv))
3041 );
3042 OUTPUT:
3043 RETVAL
3044
3045# helper for Coro::Channel
3046SV *
3047_alloc (int count)
3048 CODE:
3049 RETVAL = coro_waitarray_new (aTHX_ count);
3050 OUTPUT:
3051 RETVAL
3052
3053SV *
3054count (SV *self)
3055 CODE:
3056 RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]);
3057 OUTPUT:
3058 RETVAL
2281 3059
2282void 3060void
2283_set_state (SV *state) 3061up (SV *self, int adjust = 1)
2284 PROTOTYPE: $ 3062 ALIAS:
3063 adjust = 1
3064 CODE:
3065 coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1);
3066
3067void
3068down (...)
3069 CODE:
3070 CORO_EXECUTE_SLF_XS (slf_init_semaphore_down);
3071
3072void
3073wait (...)
3074 CODE:
3075 CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait);
3076
3077void
3078try (SV *self)
3079 PPCODE:
3080{
3081 AV *av = (AV *)SvRV (self);
3082 SV *count_sv = AvARRAY (av)[0];
3083 IV count = SvIVX (count_sv);
3084
3085 if (count > 0)
3086 {
3087 --count;
3088 SvIVX (count_sv) = count;
3089 XSRETURN_YES;
3090 }
3091 else
3092 XSRETURN_NO;
3093}
3094
3095void
3096waiters (SV *self)
3097 PPCODE:
3098{
3099 AV *av = (AV *)SvRV (self);
3100 int wcount = AvFILLp (av) + 1 - 1;
3101
3102 if (GIMME_V == G_SCALAR)
3103 XPUSHs (sv_2mortal (newSViv (wcount)));
3104 else
3105 {
3106 int i;
3107 EXTEND (SP, wcount);
3108 for (i = 1; i <= wcount; ++i)
3109 PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3110 }
3111}
3112
3113MODULE = Coro::State PACKAGE = Coro::Signal
3114
3115SV *
3116new (SV *klass)
2285 PPCODE: 3117 CODE:
3118 RETVAL = sv_bless (
3119 coro_waitarray_new (aTHX_ 0),
3120 GvSTASH (CvGV (cv))
3121 );
3122 OUTPUT:
3123 RETVAL
3124
3125void
3126wait (...)
3127 CODE:
3128 CORO_EXECUTE_SLF_XS (slf_init_signal_wait);
3129
3130void
3131broadcast (SV *self)
3132 CODE:
2286{ 3133{
2287 AV *av = (AV *)SvRV (state); 3134 AV *av = (AV *)SvRV (self);
2288 struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); 3135 coro_signal_wake (aTHX_ av, AvFILLp (av));
2289 int i; 3136}
2290 3137
2291 errno = data->errorno; 3138void
2292 PL_laststype = data->laststype; 3139send (SV *self)
2293 PL_laststatval = data->laststatval; 3140 CODE:
2294 PL_statcache = data->statcache; 3141{
3142 AV *av = (AV *)SvRV (self);
2295 3143
2296 EXTEND (SP, AvFILLp (av)); 3144 if (AvFILLp (av))
2297 for (i = 0; i < AvFILLp (av); ++i) 3145 coro_signal_wake (aTHX_ av, 1);
2298 PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); 3146 else
3147 SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */
2299} 3148}
3149
3150IV
3151awaited (SV *self)
3152 CODE:
3153 RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1;
3154 OUTPUT:
3155 RETVAL
2300 3156
2301 3157
2302MODULE = Coro::State PACKAGE = Coro::AnyEvent 3158MODULE = Coro::State PACKAGE = Coro::AnyEvent
2303 3159
2304BOOT: 3160BOOT:
2305 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); 3161 sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
2306 3162
2307SV * 3163void
2308_schedule (...) 3164_schedule (...)
2309 PROTOTYPE: @
2310 CODE: 3165 CODE:
2311{ 3166{
2312 static int incede; 3167 static int incede;
2313 3168
2314 api_cede_notself (); 3169 api_cede_notself (aTHX);
2315 3170
2316 ++incede; 3171 ++incede;
2317 while (coro_nready >= incede && api_cede ()) 3172 while (coro_nready >= incede && api_cede (aTHX))
2318 ; 3173 ;
2319 3174
2320 sv_setsv (sv_activity, &PL_sv_undef); 3175 sv_setsv (sv_activity, &PL_sv_undef);
2321 if (coro_nready >= incede) 3176 if (coro_nready >= incede)
2322 { 3177 {
2323 PUSHMARK (SP); 3178 PUSHMARK (SP);
2324 PUTBACK; 3179 PUTBACK;
2325 call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); 3180 call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2326 SPAGAIN;
2327 } 3181 }
2328 3182
2329 --incede; 3183 --incede;
2330} 3184}
2331 3185
2332 3186
2333MODULE = Coro::State PACKAGE = PerlIO::cede 3187MODULE = Coro::State PACKAGE = Coro::AIO
2334 3188
2335BOOT: 3189void
2336 PerlIO_define_layer (aTHX_ &PerlIO_cede); 3190_register (char *target, char *proto, SV *req)
3191 CODE:
3192{
3193 HV *st;
3194 GV *gvp;
3195 CV *req_cv = sv_2cv (req, &st, &gvp, 0);
3196 /* newXSproto doesn't return the CV on 5.8 */
3197 CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3198 sv_setpv ((SV *)slf_cv, proto);
3199 sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3200}
3201

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines