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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC

… …
4#include "perl.h" 4#include "perl.h"
5#include "XSUB.h" 5#include "XSUB.h"
6 6
7#include "patchlevel.h" 7#include "patchlevel.h"
8 8
9#if USE_VALGRIND
10# include <valgrind/valgrind.h>
11#endif
12
13/* the maximum number of idle cctx that will be pooled */
14#define MAX_IDLE_CCTX 8
15
16#define PERL_VERSION_ATLEAST(a,b,c) \
17 (PERL_REVISION > (a) \
18 || (PERL_REVISION == (a) \
19 && (PERL_VERSION > (b) \
20 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22#if !PERL_VERSION_ATLEAST (5,6,0)
23# ifndef PL_ppaddr
24# define PL_ppaddr ppaddr
25# endif
26# ifndef call_sv
27# define call_sv perl_call_sv
28# endif
29# ifndef get_sv
30# define get_sv perl_get_sv
31# endif
32# ifndef get_cv
33# define get_cv perl_get_cv
34# endif
35# ifndef IS_PADGV
36# define IS_PADGV(v) 0
37# endif
38# ifndef IS_PADCONST
39# define IS_PADCONST(v) 0
40# endif
41#endif
42
43/* 5.8.7 */
44#ifndef SvRV_set
45# define SvRV_set(s,v) SvRV(s) = (v)
46#endif
47
48#include <stdio.h> 9#include <stdio.h>
49#include <errno.h> 10#include <errno.h>
50#include <assert.h> 11#include <assert.h>
51
52#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53# undef STACKGUARD
54#endif
55
56#ifndef STACKGUARD
57# define STACKGUARD 0
58#endif
59 12
60#ifdef HAVE_MMAP 13#ifdef HAVE_MMAP
61# include <unistd.h> 14# include <unistd.h>
62# include <sys/mman.h> 15# include <sys/mman.h>
63# ifndef MAP_ANONYMOUS 16# ifndef MAP_ANONYMOUS
… …
78#else 31#else
79# define PAGESIZE 0 32# define PAGESIZE 0
80# define BOOT_PAGESIZE (void)0 33# define BOOT_PAGESIZE (void)0
81#endif 34#endif
82 35
36#if USE_VALGRIND
37# include <valgrind/valgrind.h>
38#endif
39
40/* the maximum number of idle cctx that will be pooled */
41#define MAX_IDLE_CCTX 8
42
43#define PERL_VERSION_ATLEAST(a,b,c) \
44 (PERL_REVISION > (a) \
45 || (PERL_REVISION == (a) \
46 && (PERL_VERSION > (b) \
47 || (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
48
49#if !PERL_VERSION_ATLEAST (5,6,0)
50# ifndef PL_ppaddr
51# define PL_ppaddr ppaddr
52# endif
53# ifndef call_sv
54# define call_sv perl_call_sv
55# endif
56# ifndef get_sv
57# define get_sv perl_get_sv
58# endif
59# ifndef get_cv
60# define get_cv perl_get_cv
61# endif
62# ifndef IS_PADGV
63# define IS_PADGV(v) 0
64# endif
65# ifndef IS_PADCONST
66# define IS_PADCONST(v) 0
67# endif
68#endif
69
70/* 5.8.7 */
71#ifndef SvRV_set
72# define SvRV_set(s,v) SvRV(s) = (v)
73#endif
74
75#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76# undef STACKGUARD
77#endif
78
79#ifndef STACKGUARD
80# define STACKGUARD 0
81#endif
82
83/* prefer perl internal functions over our own? */
84#ifndef PREFER_PERL_FUNCTIONS
85# define PREFER_PERL_FUNCTIONS 0
86#endif
87
83/* The next macro should declare a variable stacklevel that contains and approximation 88/* The next macro should declare a variable stacklevel that contains and approximation
84 * to the current C stack pointer. Its property is that it changes with each call 89 * to the current C stack pointer. Its property is that it changes with each call
85 * and should be unique. */ 90 * and should be unique. */
86#define dSTACKLEVEL int stacklevel 91#define dSTACKLEVEL int stacklevel
87#define STACKLEVEL ((void *)&stacklevel) 92#define STACKLEVEL ((void *)&stacklevel)
88 93
89#define IN_DESTRUCT (PL_main_cv == Nullcv) 94#define IN_DESTRUCT (PL_main_cv == Nullcv)
90 95
91#if __GNUC__ >= 3 96#if __GNUC__ >= 3
92# define attribute(x) __attribute__(x) 97# define attribute(x) __attribute__(x)
98# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93#else 99#else
94# define attribute(x) 100# define attribute(x)
101# define BARRIER
95#endif 102#endif
96 103
97#define NOINLINE attribute ((noinline)) 104#define NOINLINE attribute ((noinline))
98 105
99#include "CoroAPI.h" 106#include "CoroAPI.h"
… …
259 266
260 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) 267 if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; 268 CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262 else 269 else
263 { 270 {
264#if 0 271#if PREFER_PERL_FUNCTIONS
265 /* this is probably cleaner, but also slower? */ 272 /* this is probably cleaner, but also slower? */
266 CV *cp = Perl_cv_clone (cv); 273 CV *cp = Perl_cv_clone (cv);
267 CvPADLIST (cv) = CvPADLIST (cp); 274 CvPADLIST (cv) = CvPADLIST (cp);
268 CvPADLIST (cp) = 0; 275 CvPADLIST (cp) = 0;
269 SvREFCNT_dec (cp); 276 SvREFCNT_dec (cp);
… …
403 * allocate various perl stacks. This is an exact copy 410 * allocate various perl stacks. This is an exact copy
404 * of perl.c:init_stacks, except that it uses less memory 411 * of perl.c:init_stacks, except that it uses less memory
405 * on the (sometimes correct) assumption that coroutines do 412 * on the (sometimes correct) assumption that coroutines do
406 * not usually need a lot of stackspace. 413 * not usually need a lot of stackspace.
407 */ 414 */
408#if USE_PERL_INIT_STACKS 415#if PREFER_PERL_FUNCTIONS
409# define coro_init_stacks init_stacks 416# define coro_init_stacks init_stacks
410#else 417#else
411
412static void 418static void
413coro_init_stacks () 419coro_init_stacks ()
414{ 420{
415 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); 421 PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
416 PL_curstackinfo->si_type = PERLSI_MAIN; 422 PL_curstackinfo->si_type = PERLSI_MAIN;
… …
446 New(54,PL_retstack,16,OP*); 452 New(54,PL_retstack,16,OP*);
447 PL_retstack_ix = 0; 453 PL_retstack_ix = 0;
448 PL_retstack_max = 16; 454 PL_retstack_max = 16;
449#endif 455#endif
450} 456}
457#endif
451 458
452/* 459/*
453 * destroy the stacks, the callchain etc... 460 * destroy the stacks, the callchain etc...
454 */ 461 */
455static void 462static void
… …
489 Safefree (PL_savestack); 496 Safefree (PL_savestack);
490#if !PERL_VERSION_ATLEAST (5,9,0) 497#if !PERL_VERSION_ATLEAST (5,9,0)
491 Safefree (PL_retstack); 498 Safefree (PL_retstack);
492#endif 499#endif
493} 500}
494#endif
495 501
496static void 502static void
497setup_coro (struct coro *coro) 503setup_coro (struct coro *coro)
498{ 504{
499 /* 505 /*
… …
953 coro = SvSTATE (coro_sv); 959 coro = SvSTATE (coro_sv);
954 960
955 if (coro->flags & CF_READY) 961 if (coro->flags & CF_READY)
956 return 0; 962 return 0;
957 963
958#if 0 /* this is actually harmless */
959 if (coro->flags & CF_RUNNING)
960 croak ("Coro::ready called on currently running coroutine");
961#endif
962
963 coro->flags |= CF_READY; 964 coro->flags |= CF_READY;
964 965
965 LOCK; 966 LOCK;
966 coro_enq (SvREFCNT_inc (coro_sv)); 967 coro_enq (SvREFCNT_inc (coro_sv));
967 UNLOCK; 968 UNLOCK;
… …
970} 971}
971 972
972static int 973static int
973api_is_ready (SV *coro_sv) 974api_is_ready (SV *coro_sv)
974{ 975{
975 return !!SvSTATE (coro_sv)->flags & CF_READY; 976 return !!(SvSTATE (coro_sv)->flags & CF_READY);
976} 977}
977 978
978static void 979static void
979prepare_schedule (struct transfer_args *ta) 980prepare_schedule (struct transfer_args *ta)
980{ 981{
… …
1025 1026
1026static void 1027static void
1027prepare_cede (struct transfer_args *ta) 1028prepare_cede (struct transfer_args *ta)
1028{ 1029{
1029 api_ready (coro_current); 1030 api_ready (coro_current);
1030
1031 prepare_schedule (ta); 1031 prepare_schedule (ta);
1032}
1033
1034static int
1035prepare_cede_notself (struct transfer_args *ta)
1036{
1037 if (coro_nready)
1038 {
1039 SV *prev = SvRV (coro_current);
1040 prepare_schedule (ta);
1041 api_ready (prev);
1042 return 1;
1043 }
1044 else
1045 return 0;
1032} 1046}
1033 1047
1034static void 1048static void
1035api_schedule (void) 1049api_schedule (void)
1036{ 1050{
… …
1038 1052
1039 prepare_schedule (&ta); 1053 prepare_schedule (&ta);
1040 TRANSFER (ta); 1054 TRANSFER (ta);
1041} 1055}
1042 1056
1043static void 1057static int
1044api_cede (void) 1058api_cede (void)
1045{ 1059{
1046 struct transfer_args ta; 1060 struct transfer_args ta;
1047 1061
1048 prepare_cede (&ta); 1062 prepare_cede (&ta);
1063
1064 if (ta.prev != ta.next)
1065 {
1049 TRANSFER (ta); 1066 TRANSFER (ta);
1067 return 1;
1068 }
1069 else
1070 return 0;
1071}
1072
1073static int
1074api_cede_notself (void)
1075{
1076 struct transfer_args ta;
1077
1078 if (prepare_cede_notself (&ta))
1079 {
1080 TRANSFER (ta);
1081 return 1;
1082 }
1083 else
1084 return 0;
1050} 1085}
1051 1086
1052MODULE = Coro::State PACKAGE = Coro::State 1087MODULE = Coro::State PACKAGE = Coro::State
1053 1088
1054PROTOTYPES: DISABLE 1089PROTOTYPES: DISABLE
… …
1110_set_stacklevel (...) 1145_set_stacklevel (...)
1111 ALIAS: 1146 ALIAS:
1112 Coro::State::transfer = 1 1147 Coro::State::transfer = 1
1113 Coro::schedule = 2 1148 Coro::schedule = 2
1114 Coro::cede = 3 1149 Coro::cede = 3
1150 Coro::cede_notself = 4
1115 CODE: 1151 CODE:
1116{ 1152{
1117 struct transfer_args ta; 1153 struct transfer_args ta;
1118 1154
1119 switch (ix) 1155 switch (ix)
… …
1135 break; 1171 break;
1136 1172
1137 case 3: 1173 case 3:
1138 prepare_cede (&ta); 1174 prepare_cede (&ta);
1139 break; 1175 break;
1176
1177 case 4:
1178 if (!prepare_cede_notself (&ta))
1179 XSRETURN_EMPTY;
1180
1181 break;
1140 } 1182 }
1141 1183
1184 BARRIER;
1142 TRANSFER (ta); 1185 TRANSFER (ta);
1143} 1186}
1144 1187
1145void 1188void
1146_clone_state_from (SV *dst, SV *src) 1189_clone_state_from (SV *dst, SV *src)
… …
1197 coro_ready[i] = newAV (); 1240 coro_ready[i] = newAV ();
1198 1241
1199 { 1242 {
1200 SV *sv = perl_get_sv("Coro::API", 1); 1243 SV *sv = perl_get_sv("Coro::API", 1);
1201 1244
1202 coroapi.schedule = api_schedule; 1245 coroapi.schedule = api_schedule;
1203 coroapi.save = api_save; 1246 coroapi.save = api_save;
1204 coroapi.cede = api_cede; 1247 coroapi.cede = api_cede;
1248 coroapi.cede_notself = api_cede_notself;
1205 coroapi.ready = api_ready; 1249 coroapi.ready = api_ready;
1206 coroapi.is_ready = api_is_ready; 1250 coroapi.is_ready = api_is_ready;
1207 coroapi.nready = &coro_nready; 1251 coroapi.nready = &coro_nready;
1208 coroapi.current = coro_current; 1252 coroapi.current = coro_current;
1209 1253
1210 GCoroAPI = &coroapi; 1254 GCoroAPI = &coroapi;
1211 sv_setiv (sv, (IV)&coroapi); 1255 sv_setiv (sv, (IV)&coroapi);
1212 SvREADONLY_on (sv); 1256 SvREADONLY_on (sv);
1213 } 1257 }
… …
1229 RETVAL = coro->prio; 1273 RETVAL = coro->prio;
1230 1274
1231 if (items > 1) 1275 if (items > 1)
1232 { 1276 {
1233 if (ix) 1277 if (ix)
1234 newprio += coro->prio; 1278 newprio = coro->prio - newprio;
1235 1279
1236 if (newprio < PRIO_MIN) newprio = PRIO_MIN; 1280 if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237 if (newprio > PRIO_MAX) newprio = PRIO_MAX; 1281 if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238 1282
1239 coro->prio = newprio; 1283 coro->prio = newprio;
1240 } 1284 }
1241} 1285}
1286 OUTPUT:
1287 RETVAL
1242 1288
1243SV * 1289SV *
1244ready (SV *self) 1290ready (SV *self)
1245 PROTOTYPE: $ 1291 PROTOTYPE: $
1246 CODE: 1292 CODE:

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