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1 | #include "libcoro/coro.c" |
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2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
6 | |
8 | |
7 | #if PATCHLEVEL < 6 |
9 | #include <stdio.h> |
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10 | #include <errno.h> |
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11 | #include <assert.h> |
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12 | |
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13 | #ifdef HAVE_MMAP |
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14 | # include <unistd.h> |
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15 | # include <sys/mman.h> |
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16 | # ifndef MAP_ANONYMOUS |
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17 | # ifdef MAP_ANON |
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18 | # define MAP_ANONYMOUS MAP_ANON |
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19 | # else |
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20 | # undef HAVE_MMAP |
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21 | # endif |
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22 | # endif |
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23 | # include <limits.h> |
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24 | # ifndef PAGESIZE |
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25 | # define PAGESIZE pagesize |
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26 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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27 | static long pagesize; |
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28 | # else |
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29 | # define BOOT_PAGESIZE (void)0 |
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30 | # endif |
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31 | #else |
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32 | # define PAGESIZE 0 |
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33 | # define BOOT_PAGESIZE (void)0 |
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34 | #endif |
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35 | |
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36 | #if USE_VALGRIND |
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37 | # include <valgrind/valgrind.h> |
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38 | #endif |
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39 | |
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40 | /* the maximum number of idle cctx that will be pooled */ |
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41 | #define MAX_IDLE_CCTX 8 |
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42 | |
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43 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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44 | (PERL_REVISION > (a) \ |
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45 | || (PERL_REVISION == (a) \ |
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46 | && (PERL_VERSION > (b) \ |
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47 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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48 | |
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49 | #if !PERL_VERSION_ATLEAST (5,6,0) |
8 | # ifndef PL_ppaddr |
50 | # ifndef PL_ppaddr |
9 | # define PL_ppaddr ppaddr |
51 | # define PL_ppaddr ppaddr |
10 | # endif |
52 | # endif |
11 | # ifndef call_sv |
53 | # ifndef call_sv |
12 | # define call_sv perl_call_sv |
54 | # define call_sv perl_call_sv |
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… | |
23 | # ifndef IS_PADCONST |
65 | # ifndef IS_PADCONST |
24 | # define IS_PADCONST(v) 0 |
66 | # define IS_PADCONST(v) 0 |
25 | # endif |
67 | # endif |
26 | #endif |
68 | #endif |
27 | |
69 | |
28 | #include "libcoro/coro.c" |
70 | /* 5.8.7 */ |
29 | |
71 | #ifndef SvRV_set |
30 | #include <signal.h> |
72 | # define SvRV_set(s,v) SvRV(s) = (v) |
31 | |
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32 | #ifdef HAVE_MMAP |
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33 | # include <unistd.h> |
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34 | # include <sys/mman.h> |
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35 | # ifndef MAP_ANONYMOUS |
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36 | # ifdef MAP_ANON |
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37 | # define MAP_ANONYMOUS MAP_ANON |
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38 | # else |
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39 | # undef HAVE_MMAP |
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40 | # endif |
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41 | # endif |
73 | #endif |
42 | #endif |
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43 | |
74 | |
44 | #define SUB_INIT "Coro::State::initialize" |
75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
45 | #define UCORO_STATE "_coro_state" |
76 | # undef STACKGUARD |
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77 | #endif |
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78 | |
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79 | #ifndef STACKGUARD |
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80 | # define STACKGUARD 0 |
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81 | #endif |
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82 | |
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83 | /* prefer perl internal functions over our own? */ |
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84 | #ifndef PREFER_PERL_FUNCTIONS |
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85 | # define PREFER_PERL_FUNCTIONS 0 |
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86 | #endif |
46 | |
87 | |
47 | /* 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 |
48 | * 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 |
49 | * and should be unique. */ |
90 | * and should be unique. */ |
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91 | #define dSTACKLEVEL int stacklevel |
50 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
92 | #define STACKLEVEL ((void *)&stacklevel) |
51 | |
93 | |
52 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
94 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
53 | |
95 | |
54 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
96 | #if __GNUC__ >= 3 |
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97 | # define attribute(x) __attribute__(x) |
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98 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
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99 | #else |
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100 | # define attribute(x) |
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101 | # define BARRIER |
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102 | #endif |
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103 | |
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104 | #define NOINLINE attribute ((noinline)) |
55 | |
105 | |
56 | #include "CoroAPI.h" |
106 | #include "CoroAPI.h" |
57 | |
107 | |
58 | #ifdef USE_ITHREADS |
108 | #ifdef USE_ITHREADS |
59 | static perl_mutex coro_mutex; |
109 | static perl_mutex coro_mutex; |
60 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
110 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
61 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
111 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
62 | #else |
112 | #else |
63 | # define LOCK 0 |
113 | # define LOCK (void)0 |
64 | # define UNLOCK 0 |
114 | # define UNLOCK (void)0 |
65 | #endif |
115 | #endif |
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116 | |
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117 | struct io_state |
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118 | { |
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119 | int errorno; |
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120 | I32 laststype; |
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121 | int laststatval; |
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122 | Stat_t statcache; |
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123 | }; |
66 | |
124 | |
67 | static struct CoroAPI coroapi; |
125 | static struct CoroAPI coroapi; |
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126 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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127 | static HV *coro_state_stash, *coro_stash; |
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128 | static SV *coro_mortal; /* will be freed after next transfer */ |
68 | |
129 | |
69 | /* this is actually not only the c stack but also c registers etc... */ |
130 | static struct coro_cctx *cctx_first; |
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131 | static int cctx_count, cctx_idle; |
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132 | |
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133 | /* this is a structure representing a c-level coroutine */ |
70 | typedef struct { |
134 | typedef struct coro_cctx { |
71 | int refcnt; /* pointer reference counter */ |
135 | struct coro_cctx *next; |
72 | int usecnt; /* shared by how many coroutines */ |
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73 | int gencnt; /* generation counter */ |
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74 | |
136 | |
75 | coro_context cctx; |
137 | /* the stack */ |
76 | |
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77 | void *sptr; |
138 | void *sptr; |
78 | long ssize; /* positive == mmap, otherwise malloc */ |
139 | long ssize; /* positive == mmap, otherwise malloc */ |
79 | } coro_stack; |
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80 | |
140 | |
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141 | /* cpu state */ |
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142 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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143 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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144 | JMPENV *top_env; |
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145 | coro_context cctx; |
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146 | |
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147 | int inuse; |
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148 | |
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149 | #if USE_VALGRIND |
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150 | int valgrind_id; |
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151 | #endif |
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152 | } coro_cctx; |
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153 | |
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154 | enum { |
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155 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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156 | CF_READY = 0x0002, /* coroutine is ready */ |
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157 | CF_NEW = 0x0004, /* has never been switched to */ |
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158 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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159 | }; |
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160 | |
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161 | /* this is a structure representing a perl-level coroutine */ |
81 | struct coro { |
162 | struct coro { |
82 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
163 | /* the c coroutine allocated to this perl coroutine, if any */ |
83 | JMPENV start_env; |
164 | coro_cctx *cctx; |
84 | |
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85 | /* the optional C context */ |
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86 | coro_stack *stack; |
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87 | void *cursp; |
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88 | int gencnt; |
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89 | |
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90 | /* optionally saved, might be zero */ |
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91 | AV *defav; |
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92 | SV *defsv; |
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93 | SV *errsv; |
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94 | |
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95 | /* saved global state not related to stacks */ |
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96 | U8 dowarn; |
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97 | I32 in_eval; |
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98 | |
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99 | /* the stacks and related info (callchain etc..) */ |
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100 | PERL_SI *curstackinfo; |
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101 | AV *curstack; |
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102 | AV *mainstack; |
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103 | SV **stack_sp; |
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104 | OP *op; |
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105 | SV **curpad; |
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106 | AV *comppad; |
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107 | SV **stack_base; |
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108 | SV **stack_max; |
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109 | SV **tmps_stack; |
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110 | I32 tmps_floor; |
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111 | I32 tmps_ix; |
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112 | I32 tmps_max; |
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113 | I32 *markstack; |
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114 | I32 *markstack_ptr; |
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115 | I32 *markstack_max; |
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116 | I32 *scopestack; |
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117 | I32 scopestack_ix; |
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118 | I32 scopestack_max; |
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119 | ANY *savestack; |
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120 | I32 savestack_ix; |
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121 | I32 savestack_max; |
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122 | OP **retstack; |
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123 | I32 retstack_ix; |
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124 | I32 retstack_max; |
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125 | COP *curcop; |
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126 | JMPENV *top_env; |
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127 | |
165 | |
128 | /* data associated with this coroutine (initial args) */ |
166 | /* data associated with this coroutine (initial args) */ |
129 | AV *args; |
167 | AV *args; |
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168 | int refcnt; |
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169 | int save; /* CORO_SAVE flags */ |
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170 | int flags; /* CF_ flags */ |
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171 | |
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172 | /* optionally saved, might be zero */ |
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173 | AV *defav; /* @_ */ |
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174 | SV *defsv; /* $_ */ |
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175 | SV *errsv; /* $@ */ |
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176 | SV *irssv; /* $/ */ |
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177 | SV *irssv_sv; /* real $/ cache */ |
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178 | |
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179 | #define VAR(name,type) type name; |
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180 | # include "state.h" |
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181 | #undef VAR |
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182 | |
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183 | /* coro process data */ |
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184 | int prio; |
130 | }; |
185 | }; |
131 | |
186 | |
132 | typedef struct coro *Coro__State; |
187 | typedef struct coro *Coro__State; |
133 | typedef struct coro *Coro__State_or_hashref; |
188 | typedef struct coro *Coro__State_or_hashref; |
134 | |
189 | |
135 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
190 | static AV * |
136 | static HV *coro_state_stash; |
191 | coro_clone_padlist (CV *cv) |
137 | static SV *ucoro_state_sv; |
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138 | static U32 ucoro_state_hash; |
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139 | static SV *coro_mortal; /* will be freed after next transfer */ |
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140 | |
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141 | /* mostly copied from op.c:cv_clone2 */ |
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142 | STATIC AV * |
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143 | clone_padlist (AV *protopadlist) |
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144 | { |
192 | { |
145 | AV *av; |
193 | AV *padlist = CvPADLIST (cv); |
146 | I32 ix; |
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147 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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148 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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149 | SV **pname = AvARRAY (protopad_name); |
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150 | SV **ppad = AvARRAY (protopad); |
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151 | I32 fname = AvFILLp (protopad_name); |
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152 | I32 fpad = AvFILLp (protopad); |
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153 | AV *newpadlist, *newpad_name, *newpad; |
194 | AV *newpadlist, *newpad; |
154 | SV **npad; |
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155 | |
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156 | newpad_name = newAV (); |
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157 | for (ix = fname; ix >= 0; ix--) |
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158 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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159 | |
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160 | newpad = newAV (); |
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161 | av_fill (newpad, AvFILLp (protopad)); |
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162 | npad = AvARRAY (newpad); |
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163 | |
195 | |
164 | newpadlist = newAV (); |
196 | newpadlist = newAV (); |
165 | AvREAL_off (newpadlist); |
197 | AvREAL_off (newpadlist); |
166 | av_store (newpadlist, 0, (SV *) newpad_name); |
198 | #if PERL_VERSION_ATLEAST (5,9,0) |
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199 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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200 | #else |
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201 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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202 | #endif |
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203 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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204 | --AvFILLp (padlist); |
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205 | |
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206 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
167 | av_store (newpadlist, 1, (SV *) newpad); |
207 | av_store (newpadlist, 1, (SV *)newpad); |
168 | |
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169 | av = newAV (); /* will be @_ */ |
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170 | av_extend (av, 0); |
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171 | av_store (newpad, 0, (SV *) av); |
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172 | AvFLAGS (av) = AVf_REIFY; |
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173 | |
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174 | for (ix = fpad; ix > 0; ix--) |
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175 | { |
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176 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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177 | |
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178 | if (namesv && namesv != &PL_sv_undef) |
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179 | { |
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180 | char *name = SvPVX (namesv); /* XXX */ |
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181 | |
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182 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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183 | { /* lexical from outside? */ |
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184 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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185 | } |
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186 | else |
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187 | { /* our own lexical */ |
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188 | SV *sv; |
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189 | if (*name == '&') |
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190 | sv = SvREFCNT_inc (ppad[ix]); |
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191 | else if (*name == '@') |
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192 | sv = (SV *) newAV (); |
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193 | else if (*name == '%') |
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194 | sv = (SV *) newHV (); |
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195 | else |
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196 | sv = NEWSV (0, 0); |
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197 | |
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198 | #ifdef SvPADBUSY |
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199 | if (!SvPADBUSY (sv)) |
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200 | #endif |
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201 | SvPADMY_on (sv); |
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202 | |
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203 | npad[ix] = sv; |
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204 | } |
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205 | } |
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206 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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207 | { |
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208 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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209 | } |
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210 | else |
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211 | { |
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212 | SV *sv = NEWSV (0, 0); |
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213 | SvPADTMP_on (sv); |
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214 | npad[ix] = sv; |
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215 | } |
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216 | } |
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217 | |
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218 | #if 0 /* return -ENOTUNDERSTOOD */ |
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219 | /* Now that vars are all in place, clone nested closures. */ |
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220 | |
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221 | for (ix = fpad; ix > 0; ix--) { |
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222 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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223 | if (namesv |
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224 | && namesv != &PL_sv_undef |
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225 | && !(SvFLAGS(namesv) & SVf_FAKE) |
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226 | && *SvPVX(namesv) == '&' |
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227 | && CvCLONE(ppad[ix])) |
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228 | { |
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229 | CV *kid = cv_clone((CV*)ppad[ix]); |
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230 | SvREFCNT_dec(ppad[ix]); |
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231 | CvCLONE_on(kid); |
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232 | SvPADMY_on(kid); |
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233 | npad[ix] = (SV*)kid; |
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234 | } |
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235 | } |
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236 | #endif |
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237 | |
208 | |
238 | return newpadlist; |
209 | return newpadlist; |
239 | } |
210 | } |
240 | |
211 | |
241 | STATIC void |
212 | static void |
242 | free_padlist (AV *padlist) |
213 | free_padlist (AV *padlist) |
243 | { |
214 | { |
244 | /* may be during global destruction */ |
215 | /* may be during global destruction */ |
245 | if (SvREFCNT (padlist)) |
216 | if (SvREFCNT (padlist)) |
246 | { |
217 | { |
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260 | |
231 | |
261 | SvREFCNT_dec ((SV*)padlist); |
232 | SvREFCNT_dec ((SV*)padlist); |
262 | } |
233 | } |
263 | } |
234 | } |
264 | |
235 | |
265 | STATIC int |
236 | static int |
266 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
237 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
267 | { |
238 | { |
268 | AV *padlist; |
239 | AV *padlist; |
269 | AV *av = (AV *)mg->mg_obj; |
240 | AV *av = (AV *)mg->mg_obj; |
270 | |
241 | |
271 | /* casting is fun. */ |
242 | /* casting is fun. */ |
272 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
243 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
273 | free_padlist (padlist); |
244 | free_padlist (padlist); |
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245 | |
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246 | SvREFCNT_dec (av); |
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247 | |
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248 | return 0; |
274 | } |
249 | } |
275 | |
250 | |
276 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
251 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
277 | |
252 | |
278 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
253 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
279 | |
254 | |
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255 | #define CORO_MAGIC(cv) \ |
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256 | SvMAGIC (cv) \ |
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257 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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258 | ? SvMAGIC (cv) \ |
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259 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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260 | : 0 |
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261 | |
280 | /* the next two functions merely cache the padlists */ |
262 | /* the next two functions merely cache the padlists */ |
281 | STATIC void |
263 | static void |
282 | get_padlist (CV *cv) |
264 | get_padlist (CV *cv) |
283 | { |
265 | { |
284 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
266 | MAGIC *mg = CORO_MAGIC (cv); |
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267 | AV *av; |
285 | |
268 | |
286 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
269 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
287 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
270 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
288 | else |
271 | else |
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272 | { |
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273 | #if PREFER_PERL_FUNCTIONS |
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274 | /* this is probably cleaner, but also slower? */ |
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275 | CV *cp = Perl_cv_clone (cv); |
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276 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
277 | CvPADLIST (cp) = 0; |
|
|
278 | SvREFCNT_dec (cp); |
|
|
279 | #else |
289 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
280 | CvPADLIST (cv) = coro_clone_padlist (cv); |
|
|
281 | #endif |
|
|
282 | } |
290 | } |
283 | } |
291 | |
284 | |
292 | STATIC void |
285 | static void |
293 | put_padlist (CV *cv) |
286 | put_padlist (CV *cv) |
294 | { |
287 | { |
295 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
288 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
289 | AV *av; |
296 | |
290 | |
297 | if (!mg) |
291 | if (!mg) |
298 | { |
292 | { |
299 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
293 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
300 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
294 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
301 | mg->mg_virtual = &vtbl_coro; |
295 | mg->mg_virtual = &vtbl_coro; |
302 | mg->mg_obj = (SV *)newAV (); |
296 | mg->mg_obj = (SV *)newAV (); |
303 | } |
297 | } |
304 | |
298 | |
305 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
299 | av = (AV *)mg->mg_obj; |
|
|
300 | |
|
|
301 | if (AvFILLp (av) >= AvMAX (av)) |
|
|
302 | av_extend (av, AvMAX (av) + 1); |
|
|
303 | |
|
|
304 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
306 | } |
305 | } |
307 | |
306 | |
308 | #define SB do { |
307 | #define SB do { |
309 | #define SE } while (0) |
308 | #define SE } while (0) |
310 | |
309 | |
311 | #define LOAD(state) load_state(aTHX_ (state)); |
|
|
312 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
|
|
313 | |
|
|
314 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
310 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
315 | |
311 | |
316 | static void |
312 | static void |
317 | load_state(pTHX_ Coro__State c) |
313 | load_perl (Coro__State c) |
318 | { |
314 | { |
319 | PL_dowarn = c->dowarn; |
315 | #define VAR(name,type) PL_ ## name = c->name; |
320 | PL_in_eval = c->in_eval; |
316 | # include "state.h" |
321 | |
317 | #undef VAR |
322 | PL_curstackinfo = c->curstackinfo; |
|
|
323 | PL_curstack = c->curstack; |
|
|
324 | PL_mainstack = c->mainstack; |
|
|
325 | PL_stack_sp = c->stack_sp; |
|
|
326 | PL_op = c->op; |
|
|
327 | PL_curpad = c->curpad; |
|
|
328 | PL_comppad = c->comppad; |
|
|
329 | PL_stack_base = c->stack_base; |
|
|
330 | PL_stack_max = c->stack_max; |
|
|
331 | PL_tmps_stack = c->tmps_stack; |
|
|
332 | PL_tmps_floor = c->tmps_floor; |
|
|
333 | PL_tmps_ix = c->tmps_ix; |
|
|
334 | PL_tmps_max = c->tmps_max; |
|
|
335 | PL_markstack = c->markstack; |
|
|
336 | PL_markstack_ptr = c->markstack_ptr; |
|
|
337 | PL_markstack_max = c->markstack_max; |
|
|
338 | PL_scopestack = c->scopestack; |
|
|
339 | PL_scopestack_ix = c->scopestack_ix; |
|
|
340 | PL_scopestack_max = c->scopestack_max; |
|
|
341 | PL_savestack = c->savestack; |
|
|
342 | PL_savestack_ix = c->savestack_ix; |
|
|
343 | PL_savestack_max = c->savestack_max; |
|
|
344 | PL_retstack = c->retstack; |
|
|
345 | PL_retstack_ix = c->retstack_ix; |
|
|
346 | PL_retstack_max = c->retstack_max; |
|
|
347 | PL_curcop = c->curcop; |
|
|
348 | PL_top_env = c->top_env; |
|
|
349 | |
318 | |
350 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
319 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
351 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
320 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
352 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
321 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
322 | if (c->irssv) |
|
|
323 | { |
|
|
324 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
|
|
325 | SvREFCNT_dec (c->irssv); |
|
|
326 | else |
|
|
327 | { |
|
|
328 | REPLACE_SV (PL_rs, c->irssv); |
|
|
329 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
|
|
330 | sv_setsv (c->irssv_sv, PL_rs); |
|
|
331 | } |
|
|
332 | } |
353 | |
333 | |
354 | { |
334 | { |
355 | dSP; |
335 | dSP; |
356 | CV *cv; |
336 | CV *cv; |
357 | |
337 | |
358 | /* now do the ugly restore mess */ |
338 | /* now do the ugly restore mess */ |
359 | while ((cv = (CV *)POPs)) |
339 | while ((cv = (CV *)POPs)) |
360 | { |
340 | { |
361 | AV *padlist = (AV *)POPs; |
|
|
362 | |
|
|
363 | if (padlist) |
|
|
364 | { |
|
|
365 | put_padlist (cv); /* mark this padlist as available */ |
341 | put_padlist (cv); /* mark this padlist as available */ |
366 | CvPADLIST(cv) = padlist; |
342 | CvDEPTH (cv) = PTR2IV (POPs); |
367 | } |
343 | CvPADLIST (cv) = (AV *)POPs; |
368 | |
|
|
369 | ++CvDEPTH(cv); |
|
|
370 | } |
344 | } |
371 | |
345 | |
372 | PUTBACK; |
346 | PUTBACK; |
373 | } |
347 | } |
374 | } |
348 | } |
375 | |
349 | |
376 | static void |
350 | static void |
377 | save_state(pTHX_ Coro__State c, int flags) |
351 | save_perl (Coro__State c) |
378 | { |
352 | { |
379 | { |
353 | { |
380 | dSP; |
354 | dSP; |
381 | I32 cxix = cxstack_ix; |
355 | I32 cxix = cxstack_ix; |
382 | PERL_CONTEXT *ccstk = cxstack; |
356 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
385 | /* |
359 | /* |
386 | * the worst thing you can imagine happens first - we have to save |
360 | * the worst thing you can imagine happens first - we have to save |
387 | * (and reinitialize) all cv's in the whole callchain :( |
361 | * (and reinitialize) all cv's in the whole callchain :( |
388 | */ |
362 | */ |
389 | |
363 | |
|
|
364 | EXTEND (SP, 3 + 1); |
390 | PUSHs (Nullsv); |
365 | PUSHs (Nullsv); |
391 | /* this loop was inspired by pp_caller */ |
366 | /* this loop was inspired by pp_caller */ |
392 | for (;;) |
367 | for (;;) |
393 | { |
368 | { |
394 | while (cxix >= 0) |
369 | while (cxix >= 0) |
395 | { |
370 | { |
396 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
371 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
397 | |
372 | |
398 | if (CxTYPE(cx) == CXt_SUB) |
373 | if (CxTYPE (cx) == CXt_SUB) |
399 | { |
374 | { |
400 | CV *cv = cx->blk_sub.cv; |
375 | CV *cv = cx->blk_sub.cv; |
|
|
376 | |
401 | if (CvDEPTH(cv)) |
377 | if (CvDEPTH (cv)) |
402 | { |
378 | { |
403 | EXTEND (SP, CvDEPTH(cv)*2); |
379 | EXTEND (SP, 3); |
404 | |
|
|
405 | while (--CvDEPTH(cv)) |
|
|
406 | { |
|
|
407 | /* this tells the restore code to increment CvDEPTH */ |
|
|
408 | PUSHs (Nullsv); |
|
|
409 | PUSHs ((SV *)cv); |
|
|
410 | } |
|
|
411 | |
|
|
412 | PUSHs ((SV *)CvPADLIST(cv)); |
380 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
381 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
413 | PUSHs ((SV *)cv); |
382 | PUSHs ((SV *)cv); |
414 | |
383 | |
|
|
384 | CvDEPTH (cv) = 0; |
415 | get_padlist (cv); /* this is a monster */ |
385 | get_padlist (cv); |
416 | } |
386 | } |
417 | } |
387 | } |
418 | #ifdef CXt_FORMAT |
|
|
419 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
420 | { |
|
|
421 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
422 | /* my bold guess is as a simple, plain sub... */ |
|
|
423 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
424 | } |
|
|
425 | #endif |
|
|
426 | } |
388 | } |
427 | |
389 | |
428 | if (top_si->si_type == PERLSI_MAIN) |
390 | if (top_si->si_type == PERLSI_MAIN) |
429 | break; |
391 | break; |
430 | |
392 | |
… | |
… | |
434 | } |
396 | } |
435 | |
397 | |
436 | PUTBACK; |
398 | PUTBACK; |
437 | } |
399 | } |
438 | |
400 | |
439 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
401 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
440 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
402 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
441 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
403 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
404 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
442 | |
405 | |
443 | c->dowarn = PL_dowarn; |
406 | #define VAR(name,type)c->name = PL_ ## name; |
444 | c->in_eval = PL_in_eval; |
407 | # include "state.h" |
445 | |
408 | #undef VAR |
446 | c->curstackinfo = PL_curstackinfo; |
|
|
447 | c->curstack = PL_curstack; |
|
|
448 | c->mainstack = PL_mainstack; |
|
|
449 | c->stack_sp = PL_stack_sp; |
|
|
450 | c->op = PL_op; |
|
|
451 | c->curpad = PL_curpad; |
|
|
452 | c->comppad = PL_comppad; |
|
|
453 | c->stack_base = PL_stack_base; |
|
|
454 | c->stack_max = PL_stack_max; |
|
|
455 | c->tmps_stack = PL_tmps_stack; |
|
|
456 | c->tmps_floor = PL_tmps_floor; |
|
|
457 | c->tmps_ix = PL_tmps_ix; |
|
|
458 | c->tmps_max = PL_tmps_max; |
|
|
459 | c->markstack = PL_markstack; |
|
|
460 | c->markstack_ptr = PL_markstack_ptr; |
|
|
461 | c->markstack_max = PL_markstack_max; |
|
|
462 | c->scopestack = PL_scopestack; |
|
|
463 | c->scopestack_ix = PL_scopestack_ix; |
|
|
464 | c->scopestack_max = PL_scopestack_max; |
|
|
465 | c->savestack = PL_savestack; |
|
|
466 | c->savestack_ix = PL_savestack_ix; |
|
|
467 | c->savestack_max = PL_savestack_max; |
|
|
468 | c->retstack = PL_retstack; |
|
|
469 | c->retstack_ix = PL_retstack_ix; |
|
|
470 | c->retstack_max = PL_retstack_max; |
|
|
471 | c->curcop = PL_curcop; |
|
|
472 | c->top_env = PL_top_env; |
|
|
473 | } |
409 | } |
474 | |
410 | |
475 | /* |
411 | /* |
476 | * allocate various perl stacks. This is an exact copy |
412 | * allocate various perl stacks. This is an exact copy |
477 | * of perl.c:init_stacks, except that it uses less memory |
413 | * of perl.c:init_stacks, except that it uses less memory |
478 | * on the (sometimes correct) assumption that coroutines do |
414 | * on the (sometimes correct) assumption that coroutines do |
479 | * not usually need a lot of stackspace. |
415 | * not usually need a lot of stackspace. |
480 | */ |
416 | */ |
481 | STATIC void |
417 | #if PREFER_PERL_FUNCTIONS |
|
|
418 | # define coro_init_stacks init_stacks |
|
|
419 | #else |
|
|
420 | static void |
482 | coro_init_stacks (pTHX) |
421 | coro_init_stacks () |
483 | { |
422 | { |
484 | LOCK; |
|
|
485 | |
|
|
486 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
423 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
487 | PL_curstackinfo->si_type = PERLSI_MAIN; |
424 | PL_curstackinfo->si_type = PERLSI_MAIN; |
488 | PL_curstack = PL_curstackinfo->si_stack; |
425 | PL_curstack = PL_curstackinfo->si_stack; |
489 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
426 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
490 | |
427 | |
491 | PL_stack_base = AvARRAY(PL_curstack); |
428 | PL_stack_base = AvARRAY(PL_curstack); |
492 | PL_stack_sp = PL_stack_base; |
429 | PL_stack_sp = PL_stack_base; |
493 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
430 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
494 | |
431 | |
495 | New(50,PL_tmps_stack,96,SV*); |
432 | New(50,PL_tmps_stack,128,SV*); |
496 | PL_tmps_floor = -1; |
433 | PL_tmps_floor = -1; |
497 | PL_tmps_ix = -1; |
434 | PL_tmps_ix = -1; |
498 | PL_tmps_max = 96; |
435 | PL_tmps_max = 128; |
499 | |
436 | |
500 | New(54,PL_markstack,16,I32); |
437 | New(54,PL_markstack,32,I32); |
501 | PL_markstack_ptr = PL_markstack; |
438 | PL_markstack_ptr = PL_markstack; |
502 | PL_markstack_max = PL_markstack + 16; |
439 | PL_markstack_max = PL_markstack + 32; |
503 | |
440 | |
504 | #ifdef SET_MARK_OFFSET |
441 | #ifdef SET_MARK_OFFSET |
505 | SET_MARK_OFFSET; |
442 | SET_MARK_OFFSET; |
506 | #endif |
443 | #endif |
507 | |
444 | |
508 | New(54,PL_scopestack,16,I32); |
445 | New(54,PL_scopestack,32,I32); |
509 | PL_scopestack_ix = 0; |
446 | PL_scopestack_ix = 0; |
510 | PL_scopestack_max = 16; |
447 | PL_scopestack_max = 32; |
511 | |
448 | |
512 | New(54,PL_savestack,96,ANY); |
449 | New(54,PL_savestack,64,ANY); |
513 | PL_savestack_ix = 0; |
450 | PL_savestack_ix = 0; |
514 | PL_savestack_max = 96; |
451 | PL_savestack_max = 64; |
515 | |
452 | |
|
|
453 | #if !PERL_VERSION_ATLEAST (5,9,0) |
516 | New(54,PL_retstack,8,OP*); |
454 | New(54,PL_retstack,16,OP*); |
517 | PL_retstack_ix = 0; |
455 | PL_retstack_ix = 0; |
518 | PL_retstack_max = 8; |
456 | PL_retstack_max = 16; |
519 | |
457 | #endif |
520 | UNLOCK; |
|
|
521 | } |
458 | } |
|
|
459 | #endif |
522 | |
460 | |
523 | /* |
461 | /* |
524 | * destroy the stacks, the callchain etc... |
462 | * destroy the stacks, the callchain etc... |
525 | */ |
463 | */ |
526 | STATIC void |
464 | static void |
527 | destroy_stacks(pTHX) |
465 | coro_destroy_stacks () |
528 | { |
466 | { |
529 | if (!IN_DESTRUCT) |
467 | if (!IN_DESTRUCT) |
530 | { |
468 | { |
531 | /* is this ugly, I ask? */ |
469 | /* restore all saved variables and stuff */ |
532 | LEAVE_SCOPE (0); |
470 | LEAVE_SCOPE (0); |
|
|
471 | assert (PL_tmps_floor == -1); |
533 | |
472 | |
534 | /* sure it is, but more important: is it correct?? :/ */ |
473 | /* free all temporaries */ |
535 | FREETMPS; |
474 | FREETMPS; |
|
|
475 | assert (PL_tmps_ix == -1); |
|
|
476 | |
|
|
477 | /* unwind all extra stacks */ |
|
|
478 | POPSTACK_TO (PL_mainstack); |
|
|
479 | |
|
|
480 | /* unwind main stack */ |
|
|
481 | dounwind (-1); |
536 | } |
482 | } |
537 | |
483 | |
538 | while (PL_curstackinfo->si_next) |
484 | while (PL_curstackinfo->si_next) |
539 | PL_curstackinfo = PL_curstackinfo->si_next; |
485 | PL_curstackinfo = PL_curstackinfo->si_next; |
540 | |
486 | |
541 | while (PL_curstackinfo) |
487 | while (PL_curstackinfo) |
542 | { |
488 | { |
543 | PERL_SI *p = PL_curstackinfo->si_prev; |
489 | PERL_SI *p = PL_curstackinfo->si_prev; |
544 | |
490 | |
545 | { |
|
|
546 | dSP; |
|
|
547 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
548 | PUTBACK; /* possibly superfluous */ |
|
|
549 | } |
|
|
550 | |
|
|
551 | if (!IN_DESTRUCT) |
491 | if (!IN_DESTRUCT) |
552 | { |
|
|
553 | dounwind(-1); |
|
|
554 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
492 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
555 | } |
|
|
556 | |
493 | |
557 | Safefree(PL_curstackinfo->si_cxstack); |
494 | Safefree (PL_curstackinfo->si_cxstack); |
558 | Safefree(PL_curstackinfo); |
495 | Safefree (PL_curstackinfo); |
559 | PL_curstackinfo = p; |
496 | PL_curstackinfo = p; |
560 | } |
497 | } |
561 | |
498 | |
562 | Safefree(PL_tmps_stack); |
499 | Safefree (PL_tmps_stack); |
563 | Safefree(PL_markstack); |
500 | Safefree (PL_markstack); |
564 | Safefree(PL_scopestack); |
501 | Safefree (PL_scopestack); |
565 | Safefree(PL_savestack); |
502 | Safefree (PL_savestack); |
|
|
503 | #if !PERL_VERSION_ATLEAST (5,9,0) |
566 | Safefree(PL_retstack); |
504 | Safefree (PL_retstack); |
567 | } |
|
|
568 | |
|
|
569 | static void |
|
|
570 | allocate_stack (Coro__State ctx, int alloc) |
|
|
571 | { |
|
|
572 | coro_stack *stack; |
|
|
573 | |
|
|
574 | New (0, stack, 1, coro_stack); |
|
|
575 | |
|
|
576 | stack->refcnt = 1; |
|
|
577 | stack->usecnt = 1; |
|
|
578 | stack->gencnt = ctx->gencnt = 0; |
|
|
579 | |
|
|
580 | if (alloc) |
|
|
581 | { |
|
|
582 | #if HAVE_MMAP |
|
|
583 | stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
584 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
585 | if (stack->sptr == (void *)-1) |
|
|
586 | #endif |
505 | #endif |
587 | { |
|
|
588 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
589 | stack->ssize = - (8192 * sizeof (long)); |
|
|
590 | New (0, stack->sptr, 8192, long); |
|
|
591 | } |
|
|
592 | } |
|
|
593 | else |
|
|
594 | stack->sptr = 0; |
|
|
595 | |
|
|
596 | ctx->stack = stack; |
|
|
597 | } |
506 | } |
598 | |
507 | |
599 | static void |
508 | static void |
600 | deallocate_stack (Coro__State ctx) |
509 | setup_coro (struct coro *coro) |
601 | { |
|
|
602 | coro_stack *stack = ctx->stack; |
|
|
603 | |
|
|
604 | ctx->stack = 0; |
|
|
605 | |
|
|
606 | if (stack) |
|
|
607 | { |
|
|
608 | if (!--stack->refcnt) |
|
|
609 | { |
|
|
610 | #ifdef HAVE_MMAP |
|
|
611 | if (stack->ssize > 0 && stack->sptr) |
|
|
612 | munmap (stack->sptr, stack->ssize); |
|
|
613 | else |
|
|
614 | #endif |
|
|
615 | Safefree (stack->sptr); |
|
|
616 | |
|
|
617 | Safefree (stack); |
|
|
618 | } |
|
|
619 | else if (ctx->gencnt == stack->gencnt) |
|
|
620 | --stack->usecnt; |
|
|
621 | } |
|
|
622 | } |
|
|
623 | |
|
|
624 | static void |
|
|
625 | setup_coro (void *arg) |
|
|
626 | { |
510 | { |
627 | /* |
511 | /* |
628 | * emulate part of the perl startup here. |
512 | * emulate part of the perl startup here. |
629 | */ |
513 | */ |
|
|
514 | |
|
|
515 | coro_init_stacks (); |
|
|
516 | |
|
|
517 | PL_curcop = &PL_compiling; |
|
|
518 | PL_in_eval = EVAL_NULL; |
|
|
519 | PL_curpm = 0; |
|
|
520 | PL_localizing = 0; |
|
|
521 | PL_dirty = 0; |
|
|
522 | PL_restartop = 0; |
|
|
523 | |
|
|
524 | { |
|
|
525 | dSP; |
|
|
526 | LOGOP myop; |
|
|
527 | |
|
|
528 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
529 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
530 | |
|
|
531 | Zero (&myop, 1, LOGOP); |
|
|
532 | myop.op_next = Nullop; |
|
|
533 | myop.op_flags = OPf_WANT_VOID; |
|
|
534 | |
|
|
535 | PUSHMARK (SP); |
|
|
536 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
537 | PUTBACK; |
|
|
538 | PL_op = (OP *)&myop; |
|
|
539 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
540 | SPAGAIN; |
|
|
541 | } |
|
|
542 | |
|
|
543 | ENTER; /* necessary e.g. for dounwind */ |
|
|
544 | } |
|
|
545 | |
|
|
546 | static void |
|
|
547 | free_coro_mortal () |
|
|
548 | { |
|
|
549 | if (coro_mortal) |
|
|
550 | { |
|
|
551 | SvREFCNT_dec (coro_mortal); |
|
|
552 | coro_mortal = 0; |
|
|
553 | } |
|
|
554 | } |
|
|
555 | |
|
|
556 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
557 | static void NOINLINE |
|
|
558 | prepare_cctx (coro_cctx *cctx) |
|
|
559 | { |
630 | dSP; |
560 | dSP; |
631 | Coro__State ctx = (Coro__State)arg; |
561 | LOGOP myop; |
632 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
633 | |
562 | |
634 | coro_init_stacks (aTHX); |
563 | Zero (&myop, 1, LOGOP); |
635 | /*PL_curcop = 0;*/ |
564 | myop.op_next = PL_op; |
636 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
565 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
637 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
638 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
|
|
639 | |
566 | |
|
|
567 | PUSHMARK (SP); |
|
|
568 | EXTEND (SP, 2); |
|
|
569 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
|
|
570 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
571 | PUTBACK; |
|
|
572 | PL_op = (OP *)&myop; |
|
|
573 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
640 | SPAGAIN; |
574 | SPAGAIN; |
641 | |
|
|
642 | if (ctx->stack) |
|
|
643 | { |
|
|
644 | ctx->cursp = 0; |
|
|
645 | |
|
|
646 | PUSHMARK(SP); |
|
|
647 | PUTBACK; |
|
|
648 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
649 | |
|
|
650 | if (SvTRUE (ERRSV)) |
|
|
651 | croak (NULL); |
|
|
652 | else |
|
|
653 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
654 | } |
|
|
655 | else |
|
|
656 | { |
|
|
657 | UNOP myop; |
|
|
658 | |
|
|
659 | PL_op = (OP *)&myop; |
|
|
660 | |
|
|
661 | Zero(&myop, 1, UNOP); |
|
|
662 | myop.op_next = Nullop; |
|
|
663 | myop.op_flags = OPf_WANT_VOID; |
|
|
664 | |
|
|
665 | PUSHMARK(SP); |
|
|
666 | XPUSHs (sub_init); |
|
|
667 | /* |
|
|
668 | * the next line is slightly wrong, as PL_op->op_next |
|
|
669 | * is actually being executed so we skip the first op. |
|
|
670 | * that doesn't matter, though, since it is only |
|
|
671 | * pp_nextstate and we never return... |
|
|
672 | * ah yes, and I don't care anyways ;) |
|
|
673 | */ |
|
|
674 | PUTBACK; |
|
|
675 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
676 | SPAGAIN; |
|
|
677 | |
|
|
678 | ENTER; /* necessary e.g. for dounwind */ |
|
|
679 | } |
|
|
680 | } |
575 | } |
681 | |
576 | |
682 | static void |
577 | static void |
683 | continue_coro (void *arg) |
578 | coro_run (void *arg) |
684 | { |
579 | { |
|
|
580 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
|
|
581 | UNLOCK; |
|
|
582 | |
685 | /* |
583 | /* |
686 | * this is a _very_ stripped down perl interpreter ;) |
584 | * this is a _very_ stripped down perl interpreter ;) |
687 | */ |
585 | */ |
688 | Coro__State ctx = (Coro__State)arg; |
|
|
689 | JMPENV coro_start_env; |
|
|
690 | |
|
|
691 | PL_top_env = &ctx->start_env; |
586 | PL_top_env = &PL_start_env; |
692 | |
587 | |
693 | ctx->cursp = 0; |
588 | /* inject call to cctx_init */ |
694 | PL_op = PL_op->op_next; |
589 | prepare_cctx ((coro_cctx *)arg); |
695 | CALLRUNOPS(aTHX); |
|
|
696 | |
590 | |
|
|
591 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
592 | PL_restartop = PL_op; |
|
|
593 | perl_run (PL_curinterp); |
|
|
594 | |
|
|
595 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
697 | abort (); |
596 | abort (); |
698 | } |
597 | } |
699 | |
598 | |
700 | STATIC void |
599 | static coro_cctx * |
|
|
600 | cctx_new () |
|
|
601 | { |
|
|
602 | coro_cctx *cctx; |
|
|
603 | |
|
|
604 | ++cctx_count; |
|
|
605 | |
|
|
606 | Newz (0, cctx, 1, coro_cctx); |
|
|
607 | |
|
|
608 | #if HAVE_MMAP |
|
|
609 | |
|
|
610 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
611 | /* mmap supposedly does allocate-on-write for us */ |
|
|
612 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
613 | |
|
|
614 | if (cctx->sptr == (void *)-1) |
|
|
615 | { |
|
|
616 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
617 | _exit (EXIT_FAILURE); |
|
|
618 | } |
|
|
619 | |
|
|
620 | # if STACKGUARD |
|
|
621 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
622 | # endif |
|
|
623 | |
|
|
624 | #else |
|
|
625 | |
|
|
626 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
627 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
628 | |
|
|
629 | if (!cctx->sptr) |
|
|
630 | { |
|
|
631 | perror ("FATAL: unable to malloc stack for coroutine"); |
|
|
632 | _exit (EXIT_FAILURE); |
|
|
633 | } |
|
|
634 | |
|
|
635 | #endif |
|
|
636 | |
|
|
637 | #if USE_VALGRIND |
|
|
638 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
639 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
640 | cctx->ssize + (char *)cctx->sptr |
|
|
641 | ); |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
|
|
645 | |
|
|
646 | return cctx; |
|
|
647 | } |
|
|
648 | |
|
|
649 | static void |
|
|
650 | cctx_destroy (coro_cctx *cctx) |
|
|
651 | { |
|
|
652 | if (!cctx) |
|
|
653 | return; |
|
|
654 | |
|
|
655 | --cctx_count; |
|
|
656 | |
|
|
657 | #if USE_VALGRIND |
|
|
658 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
659 | #endif |
|
|
660 | |
|
|
661 | #if HAVE_MMAP |
|
|
662 | munmap (cctx->sptr, cctx->ssize); |
|
|
663 | #else |
|
|
664 | Safefree (cctx->sptr); |
|
|
665 | #endif |
|
|
666 | |
|
|
667 | Safefree (cctx); |
|
|
668 | } |
|
|
669 | |
|
|
670 | static coro_cctx * |
|
|
671 | cctx_get () |
|
|
672 | { |
|
|
673 | coro_cctx *cctx; |
|
|
674 | |
|
|
675 | if (cctx_first) |
|
|
676 | { |
|
|
677 | cctx = cctx_first; |
|
|
678 | cctx_first = cctx->next; |
|
|
679 | --cctx_idle; |
|
|
680 | } |
|
|
681 | else |
|
|
682 | { |
|
|
683 | cctx = cctx_new (); |
|
|
684 | PL_op = PL_op->op_next; |
|
|
685 | } |
|
|
686 | |
|
|
687 | return cctx; |
|
|
688 | } |
|
|
689 | |
|
|
690 | static void |
|
|
691 | cctx_put (coro_cctx *cctx) |
|
|
692 | { |
|
|
693 | /* free another cctx if overlimit */ |
|
|
694 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
695 | { |
|
|
696 | coro_cctx *first = cctx_first; |
|
|
697 | cctx_first = first->next; |
|
|
698 | --cctx_idle; |
|
|
699 | |
|
|
700 | assert (!first->inuse); |
|
|
701 | cctx_destroy (first); |
|
|
702 | } |
|
|
703 | |
|
|
704 | ++cctx_idle; |
|
|
705 | cctx->next = cctx_first; |
|
|
706 | cctx_first = cctx; |
|
|
707 | } |
|
|
708 | |
|
|
709 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
710 | static void NOINLINE |
701 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
711 | transfer (struct coro *prev, struct coro *next) |
702 | { |
712 | { |
703 | dSTACKLEVEL; |
713 | dSTACKLEVEL; |
704 | |
714 | |
|
|
715 | /* sometimes transfer is only called to set idle_sp */ |
|
|
716 | if (!next) |
|
|
717 | { |
|
|
718 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
719 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
720 | } |
705 | if (prev != next) |
721 | else if (prev != next) |
706 | { |
722 | { |
707 | if (next->mainstack) |
723 | coro_cctx *prev__cctx; |
|
|
724 | |
|
|
725 | if (prev->flags & CF_NEW) |
708 | { |
726 | { |
709 | LOCK; |
727 | /* create a new empty context */ |
710 | SAVE (prev, flags); |
728 | Newz (0, prev->cctx, 1, coro_cctx); |
711 | LOAD (next); |
729 | prev->cctx->inuse = 1; |
712 | UNLOCK; |
730 | prev->flags &= ~CF_NEW; |
713 | |
731 | prev->flags |= CF_RUNNING; |
714 | /* mark this state as in-use */ |
|
|
715 | next->mainstack = 0; |
|
|
716 | next->tmps_ix = -2; |
|
|
717 | |
|
|
718 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
719 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
720 | { |
|
|
721 | if (!prev->stack) |
|
|
722 | allocate_stack (prev, 0); |
|
|
723 | else if (prev->cursp != stacklevel |
|
|
724 | && prev->stack->usecnt > 1) |
|
|
725 | { |
|
|
726 | prev->gencnt = ++prev->stack->gencnt; |
|
|
727 | prev->stack->usecnt = 1; |
|
|
728 | } |
|
|
729 | |
|
|
730 | /* has our stack been invalidated? */ |
|
|
731 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
732 | { |
|
|
733 | deallocate_stack (next); |
|
|
734 | allocate_stack (next, 1); |
|
|
735 | coro_create (&(next->stack->cctx), |
|
|
736 | continue_coro, (void *)next, |
|
|
737 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
738 | } |
|
|
739 | |
|
|
740 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
741 | prev->cursp = stacklevel; |
|
|
742 | /* don't add any code here */ |
|
|
743 | } |
|
|
744 | else |
|
|
745 | next->cursp = stacklevel; |
|
|
746 | } |
732 | } |
747 | else if (next->tmps_ix == -2) |
733 | |
748 | croak ("tried to transfer to running coroutine"); |
734 | /*TODO: must not croak here */ |
|
|
735 | if (!prev->flags & CF_RUNNING) |
|
|
736 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
737 | |
|
|
738 | if (next->flags & CF_RUNNING) |
|
|
739 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
740 | |
|
|
741 | if (next->flags & CF_DESTROYED) |
|
|
742 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
743 | |
|
|
744 | prev->flags &= ~CF_RUNNING; |
|
|
745 | next->flags |= CF_RUNNING; |
|
|
746 | |
|
|
747 | LOCK; |
|
|
748 | |
|
|
749 | if (next->flags & CF_NEW) |
|
|
750 | { |
|
|
751 | /* need to start coroutine */ |
|
|
752 | next->flags &= ~CF_NEW; |
|
|
753 | /* first get rid of the old state */ |
|
|
754 | save_perl (prev); |
|
|
755 | /* setup coroutine call */ |
|
|
756 | setup_coro (next); |
|
|
757 | /* need a new stack */ |
|
|
758 | assert (!next->cctx); |
|
|
759 | } |
749 | else |
760 | else |
750 | { |
761 | { |
751 | LOCK; |
762 | /* coroutine already started */ |
752 | SAVE (prev, -1); /* first get rid of the old state */ |
763 | save_perl (prev); |
753 | UNLOCK; |
764 | load_perl (next); |
754 | |
|
|
755 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
756 | { |
|
|
757 | if (!prev->stack) |
|
|
758 | allocate_stack (prev, 0); |
|
|
759 | |
|
|
760 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
761 | { |
|
|
762 | PL_top_env = &next->start_env; |
|
|
763 | |
|
|
764 | setup_coro (next); |
|
|
765 | next->cursp = stacklevel; |
|
|
766 | |
|
|
767 | prev->stack->refcnt++; |
|
|
768 | prev->stack->usecnt++; |
|
|
769 | next->stack = prev->stack; |
|
|
770 | next->gencnt = prev->gencnt; |
|
|
771 | } |
|
|
772 | else |
|
|
773 | { |
|
|
774 | assert (!next->stack); |
|
|
775 | allocate_stack (next, 1); |
|
|
776 | coro_create (&(next->stack->cctx), |
|
|
777 | setup_coro, (void *)next, |
|
|
778 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
779 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
780 | prev->cursp = stacklevel; |
|
|
781 | /* don't add any code here */ |
|
|
782 | } |
|
|
783 | } |
|
|
784 | else |
|
|
785 | { |
|
|
786 | setup_coro (next); |
|
|
787 | next->cursp = stacklevel; |
|
|
788 | } |
|
|
789 | } |
765 | } |
790 | } |
|
|
791 | |
766 | |
792 | LOCK; |
767 | prev__cctx = prev->cctx; |
793 | if (coro_mortal) |
768 | |
794 | { |
769 | /* possibly "free" the cctx */ |
795 | SvREFCNT_dec (coro_mortal); |
770 | if (prev__cctx->idle_sp == STACKLEVEL) |
|
|
771 | { |
|
|
772 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
773 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
774 | |
|
|
775 | prev->cctx = 0; |
|
|
776 | |
|
|
777 | cctx_put (prev__cctx); |
|
|
778 | prev__cctx->inuse = 0; |
|
|
779 | } |
|
|
780 | |
|
|
781 | if (!next->cctx) |
|
|
782 | { |
|
|
783 | next->cctx = cctx_get (); |
|
|
784 | assert (!next->cctx->inuse); |
|
|
785 | next->cctx->inuse = 1; |
|
|
786 | } |
|
|
787 | |
|
|
788 | if (prev__cctx != next->cctx) |
|
|
789 | { |
|
|
790 | prev__cctx->top_env = PL_top_env; |
|
|
791 | PL_top_env = next->cctx->top_env; |
|
|
792 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
793 | } |
|
|
794 | |
796 | coro_mortal = 0; |
795 | free_coro_mortal (); |
797 | } |
|
|
798 | UNLOCK; |
796 | UNLOCK; |
|
|
797 | } |
799 | } |
798 | } |
800 | |
799 | |
801 | #define SV_CORO(sv,func) \ |
800 | struct transfer_args |
802 | do { \ |
801 | { |
803 | if (SvROK (sv)) \ |
802 | struct coro *prev, *next; |
804 | sv = SvRV (sv); \ |
803 | }; |
805 | \ |
|
|
806 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
807 | { \ |
|
|
808 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
809 | \ |
|
|
810 | if (!he) \ |
|
|
811 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
812 | \ |
|
|
813 | (sv) = SvRV (HeVAL(he)); \ |
|
|
814 | } \ |
|
|
815 | \ |
|
|
816 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
817 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
818 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
819 | \ |
|
|
820 | } while(0) |
|
|
821 | |
804 | |
822 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
805 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
823 | |
806 | |
824 | static void |
807 | static int |
|
|
808 | coro_state_destroy (struct coro *coro) |
|
|
809 | { |
|
|
810 | if (coro->flags & CF_DESTROYED) |
|
|
811 | return 0; |
|
|
812 | |
|
|
813 | coro->flags |= CF_DESTROYED; |
|
|
814 | |
|
|
815 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
816 | { |
|
|
817 | assert (!(coro->flags & CF_RUNNING)); |
|
|
818 | |
|
|
819 | struct coro temp; |
|
|
820 | Zero (&temp, 1, struct coro); |
|
|
821 | temp.save = CORO_SAVE_ALL; |
|
|
822 | |
|
|
823 | if (coro->flags & CF_RUNNING) |
|
|
824 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
825 | |
|
|
826 | save_perl (&temp); |
|
|
827 | load_perl (coro); |
|
|
828 | |
|
|
829 | coro_destroy_stacks (); |
|
|
830 | |
|
|
831 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
|
|
832 | |
|
|
833 | coro->mainstack = 0; |
|
|
834 | } |
|
|
835 | |
|
|
836 | cctx_destroy (coro->cctx); |
|
|
837 | SvREFCNT_dec (coro->args); |
|
|
838 | |
|
|
839 | return 1; |
|
|
840 | } |
|
|
841 | |
|
|
842 | static int |
|
|
843 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
844 | { |
|
|
845 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
846 | mg->mg_ptr = 0; |
|
|
847 | |
|
|
848 | if (--coro->refcnt < 0) |
|
|
849 | { |
|
|
850 | coro_state_destroy (coro); |
|
|
851 | Safefree (coro); |
|
|
852 | } |
|
|
853 | |
|
|
854 | return 0; |
|
|
855 | } |
|
|
856 | |
|
|
857 | static int |
|
|
858 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
859 | { |
|
|
860 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
861 | |
|
|
862 | ++coro->refcnt; |
|
|
863 | |
|
|
864 | return 0; |
|
|
865 | } |
|
|
866 | |
|
|
867 | static MGVTBL coro_state_vtbl = { |
|
|
868 | 0, 0, 0, 0, |
|
|
869 | coro_state_free, |
|
|
870 | 0, |
|
|
871 | #ifdef MGf_DUP |
|
|
872 | coro_state_dup, |
|
|
873 | #else |
|
|
874 | # define MGf_DUP 0 |
|
|
875 | #endif |
|
|
876 | }; |
|
|
877 | |
|
|
878 | static struct coro * |
|
|
879 | SvSTATE (SV *coro) |
|
|
880 | { |
|
|
881 | HV *stash; |
|
|
882 | MAGIC *mg; |
|
|
883 | |
|
|
884 | if (SvROK (coro)) |
|
|
885 | coro = SvRV (coro); |
|
|
886 | |
|
|
887 | stash = SvSTASH (coro); |
|
|
888 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
889 | { |
|
|
890 | /* very slow, but rare, check */ |
|
|
891 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
892 | croak ("Coro::State object required"); |
|
|
893 | } |
|
|
894 | |
|
|
895 | mg = SvMAGIC (coro); |
|
|
896 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
897 | return (struct coro *)mg->mg_ptr; |
|
|
898 | } |
|
|
899 | |
|
|
900 | static void |
|
|
901 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
902 | { |
|
|
903 | ta->prev = SvSTATE (prev_sv); |
|
|
904 | ta->next = SvSTATE (next_sv); |
|
|
905 | } |
|
|
906 | |
|
|
907 | static void |
825 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
908 | api_transfer (SV *prev_sv, SV *next_sv) |
826 | { |
909 | { |
827 | SV_CORO (prev, "Coro::transfer"); |
910 | struct transfer_args ta; |
828 | SV_CORO (next, "Coro::transfer"); |
|
|
829 | |
911 | |
830 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
912 | prepare_transfer (&ta, prev_sv, next_sv); |
|
|
913 | TRANSFER (ta); |
|
|
914 | } |
|
|
915 | |
|
|
916 | static int |
|
|
917 | api_save (SV *coro_sv, int new_save) |
|
|
918 | { |
|
|
919 | struct coro *coro = SvSTATE (coro_sv); |
|
|
920 | int old_save = coro->save; |
|
|
921 | |
|
|
922 | if (new_save >= 0) |
|
|
923 | coro->save = new_save; |
|
|
924 | |
|
|
925 | return old_save; |
831 | } |
926 | } |
832 | |
927 | |
833 | /** Coro ********************************************************************/ |
928 | /** Coro ********************************************************************/ |
834 | |
929 | |
835 | #define PRIO_MAX 3 |
930 | #define PRIO_MAX 3 |
… | |
… | |
838 | #define PRIO_LOW -1 |
933 | #define PRIO_LOW -1 |
839 | #define PRIO_IDLE -3 |
934 | #define PRIO_IDLE -3 |
840 | #define PRIO_MIN -4 |
935 | #define PRIO_MIN -4 |
841 | |
936 | |
842 | /* for Coro.pm */ |
937 | /* for Coro.pm */ |
843 | static GV *coro_current, *coro_idle; |
938 | static SV *coro_current; |
844 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
939 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
845 | static int coro_nready; |
940 | static int coro_nready; |
846 | |
941 | |
847 | static void |
942 | static void |
848 | coro_enq (SV *sv) |
943 | coro_enq (SV *coro_sv) |
849 | { |
944 | { |
850 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
851 | { |
|
|
852 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
853 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
854 | |
|
|
855 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
856 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
857 | : prio; |
|
|
858 | |
|
|
859 | av_push (coro_ready [prio - PRIO_MIN], sv); |
945 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
860 | coro_nready++; |
946 | coro_nready++; |
861 | |
|
|
862 | return; |
|
|
863 | } |
|
|
864 | |
|
|
865 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
866 | } |
947 | } |
867 | |
948 | |
868 | static SV * |
949 | static SV * |
869 | coro_deq (int min_prio) |
950 | coro_deq (int min_prio) |
870 | { |
951 | { |
… | |
… | |
873 | min_prio -= PRIO_MIN; |
954 | min_prio -= PRIO_MIN; |
874 | if (min_prio < 0) |
955 | if (min_prio < 0) |
875 | min_prio = 0; |
956 | min_prio = 0; |
876 | |
957 | |
877 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
958 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
878 | if (av_len (coro_ready[prio]) >= 0) |
959 | if (AvFILLp (coro_ready [prio]) >= 0) |
879 | { |
960 | { |
880 | coro_nready--; |
961 | coro_nready--; |
881 | return av_shift (coro_ready[prio]); |
962 | return av_shift (coro_ready [prio]); |
882 | } |
963 | } |
883 | |
964 | |
884 | return 0; |
965 | return 0; |
885 | } |
966 | } |
886 | |
967 | |
887 | static void |
968 | static int |
888 | api_ready (SV *coro) |
969 | api_ready (SV *coro_sv) |
889 | { |
970 | { |
|
|
971 | struct coro *coro; |
|
|
972 | |
890 | if (SvROK (coro)) |
973 | if (SvROK (coro_sv)) |
891 | coro = SvRV (coro); |
974 | coro_sv = SvRV (coro_sv); |
|
|
975 | |
|
|
976 | coro = SvSTATE (coro_sv); |
|
|
977 | |
|
|
978 | if (coro->flags & CF_READY) |
|
|
979 | return 0; |
|
|
980 | |
|
|
981 | coro->flags |= CF_READY; |
892 | |
982 | |
893 | LOCK; |
983 | LOCK; |
894 | coro_enq (SvREFCNT_inc (coro)); |
984 | coro_enq (SvREFCNT_inc (coro_sv)); |
895 | UNLOCK; |
985 | UNLOCK; |
|
|
986 | |
|
|
987 | return 1; |
|
|
988 | } |
|
|
989 | |
|
|
990 | static int |
|
|
991 | api_is_ready (SV *coro_sv) |
|
|
992 | { |
|
|
993 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
994 | } |
|
|
995 | |
|
|
996 | static void |
|
|
997 | prepare_schedule (struct transfer_args *ta) |
|
|
998 | { |
|
|
999 | SV *prev_sv, *next_sv; |
|
|
1000 | |
|
|
1001 | for (;;) |
|
|
1002 | { |
|
|
1003 | LOCK; |
|
|
1004 | next_sv = coro_deq (PRIO_MIN); |
|
|
1005 | UNLOCK; |
|
|
1006 | |
|
|
1007 | /* nothing to schedule: call the idle handler */ |
|
|
1008 | if (!next_sv) |
|
|
1009 | { |
|
|
1010 | dSP; |
|
|
1011 | |
|
|
1012 | ENTER; |
|
|
1013 | SAVETMPS; |
|
|
1014 | |
|
|
1015 | PUSHMARK (SP); |
|
|
1016 | PUTBACK; |
|
|
1017 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1018 | |
|
|
1019 | FREETMPS; |
|
|
1020 | LEAVE; |
|
|
1021 | continue; |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | ta->next = SvSTATE (next_sv); |
|
|
1025 | |
|
|
1026 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1027 | if (ta->next->flags & CF_DESTROYED) |
|
|
1028 | { |
|
|
1029 | SvREFCNT_dec (next_sv); |
|
|
1030 | continue; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | break; |
|
|
1034 | } |
|
|
1035 | |
|
|
1036 | /* free this only after the transfer */ |
|
|
1037 | prev_sv = SvRV (coro_current); |
|
|
1038 | SvRV_set (coro_current, next_sv); |
|
|
1039 | ta->prev = SvSTATE (prev_sv); |
|
|
1040 | |
|
|
1041 | assert (ta->next->flags & CF_READY); |
|
|
1042 | ta->next->flags &= ~CF_READY; |
|
|
1043 | |
|
|
1044 | LOCK; |
|
|
1045 | free_coro_mortal (); |
|
|
1046 | coro_mortal = prev_sv; |
|
|
1047 | UNLOCK; |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | static void |
|
|
1051 | prepare_cede (struct transfer_args *ta) |
|
|
1052 | { |
|
|
1053 | api_ready (coro_current); |
|
|
1054 | prepare_schedule (ta); |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | static int |
|
|
1058 | prepare_cede_notself (struct transfer_args *ta) |
|
|
1059 | { |
|
|
1060 | if (coro_nready) |
|
|
1061 | { |
|
|
1062 | SV *prev = SvRV (coro_current); |
|
|
1063 | prepare_schedule (ta); |
|
|
1064 | api_ready (prev); |
|
|
1065 | return 1; |
|
|
1066 | } |
|
|
1067 | else |
|
|
1068 | return 0; |
896 | } |
1069 | } |
897 | |
1070 | |
898 | static void |
1071 | static void |
899 | api_schedule (void) |
1072 | api_schedule (void) |
900 | { |
1073 | { |
901 | SV *prev, *next; |
1074 | struct transfer_args ta; |
902 | |
1075 | |
903 | LOCK; |
1076 | prepare_schedule (&ta); |
904 | |
1077 | TRANSFER (ta); |
905 | prev = SvRV (GvSV (coro_current)); |
|
|
906 | next = coro_deq (PRIO_MIN); |
|
|
907 | |
|
|
908 | if (!next) |
|
|
909 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
910 | |
|
|
911 | /* free this only after the transfer */ |
|
|
912 | coro_mortal = prev; |
|
|
913 | SV_CORO (prev, "Coro::schedule"); |
|
|
914 | |
|
|
915 | SvRV (GvSV (coro_current)) = next; |
|
|
916 | |
|
|
917 | SV_CORO (next, "Coro::schedule"); |
|
|
918 | |
|
|
919 | UNLOCK; |
|
|
920 | |
|
|
921 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
922 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
923 | } |
1078 | } |
924 | |
1079 | |
925 | static void |
1080 | static int |
926 | api_cede (void) |
1081 | api_cede (void) |
927 | { |
1082 | { |
928 | LOCK; |
1083 | struct transfer_args ta; |
929 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
930 | UNLOCK; |
|
|
931 | |
1084 | |
932 | api_schedule (); |
1085 | prepare_cede (&ta); |
|
|
1086 | |
|
|
1087 | if (ta.prev != ta.next) |
|
|
1088 | { |
|
|
1089 | TRANSFER (ta); |
|
|
1090 | return 1; |
|
|
1091 | } |
|
|
1092 | else |
|
|
1093 | return 0; |
|
|
1094 | } |
|
|
1095 | |
|
|
1096 | static int |
|
|
1097 | api_cede_notself (void) |
|
|
1098 | { |
|
|
1099 | struct transfer_args ta; |
|
|
1100 | |
|
|
1101 | if (prepare_cede_notself (&ta)) |
|
|
1102 | { |
|
|
1103 | TRANSFER (ta); |
|
|
1104 | return 1; |
|
|
1105 | } |
|
|
1106 | else |
|
|
1107 | return 0; |
933 | } |
1108 | } |
934 | |
1109 | |
935 | MODULE = Coro::State PACKAGE = Coro::State |
1110 | MODULE = Coro::State PACKAGE = Coro::State |
936 | |
1111 | |
937 | PROTOTYPES: ENABLE |
1112 | PROTOTYPES: DISABLE |
938 | |
1113 | |
939 | BOOT: |
1114 | BOOT: |
940 | { /* {} necessary for stoopid perl-5.6.x */ |
1115 | { |
941 | #ifdef USE_ITHREADS |
1116 | #ifdef USE_ITHREADS |
942 | MUTEX_INIT (&coro_mutex); |
1117 | MUTEX_INIT (&coro_mutex); |
943 | #endif |
1118 | #endif |
|
|
1119 | BOOT_PAGESIZE; |
944 | |
1120 | |
945 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
946 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
947 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1121 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
948 | |
1122 | |
949 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1123 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
950 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1124 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
951 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1125 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1126 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
952 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
1127 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
953 | |
1128 | |
954 | main_mainstack = PL_mainstack; |
1129 | main_mainstack = PL_mainstack; |
955 | |
1130 | |
956 | coroapi.ver = CORO_API_VERSION; |
1131 | coroapi.ver = CORO_API_VERSION; |
957 | coroapi.transfer = api_transfer; |
1132 | coroapi.transfer = api_transfer; |
958 | } |
|
|
959 | |
1133 | |
960 | Coro::State |
1134 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
961 | _newprocess(args) |
1135 | } |
962 | SV * args |
1136 | |
963 | PROTOTYPE: $ |
1137 | SV * |
|
|
1138 | new (char *klass, ...) |
964 | CODE: |
1139 | CODE: |
965 | Coro__State coro; |
1140 | { |
|
|
1141 | struct coro *coro; |
|
|
1142 | HV *hv; |
|
|
1143 | int i; |
966 | |
1144 | |
967 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
968 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
969 | |
|
|
970 | Newz (0, coro, 1, struct coro); |
1145 | Newz (0, coro, 1, struct coro); |
|
|
1146 | coro->args = newAV (); |
|
|
1147 | coro->save = CORO_SAVE_ALL; |
|
|
1148 | coro->flags = CF_NEW; |
971 | |
1149 | |
972 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1150 | hv = newHV (); |
973 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1151 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
974 | coro->stack = 0; |
1152 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
975 | |
1153 | |
976 | /* same as JMPENV_BOOTSTRAP */ |
1154 | for (i = 1; i < items; i++) |
977 | /* we might be able to recycle start_env, but safe is safe */ |
1155 | av_push (coro->args, newSVsv (ST (i))); |
978 | //Zero(&coro->start_env, 1, JMPENV); |
1156 | } |
979 | coro->start_env.je_ret = -1; |
|
|
980 | coro->start_env.je_mustcatch = TRUE; |
|
|
981 | |
|
|
982 | RETVAL = coro; |
|
|
983 | OUTPUT: |
1157 | OUTPUT: |
984 | RETVAL |
1158 | RETVAL |
985 | |
1159 | |
|
|
1160 | int |
|
|
1161 | save (SV *coro, int new_save = -1) |
|
|
1162 | CODE: |
|
|
1163 | RETVAL = api_save (coro, new_save); |
|
|
1164 | OUTPUT: |
|
|
1165 | RETVAL |
|
|
1166 | |
986 | void |
1167 | void |
987 | transfer(prev, next, flags) |
1168 | _set_stacklevel (...) |
988 | SV *prev |
1169 | ALIAS: |
989 | SV *next |
1170 | Coro::State::transfer = 1 |
990 | int flags |
1171 | Coro::schedule = 2 |
991 | PROTOTYPE: @ |
1172 | Coro::cede = 3 |
|
|
1173 | Coro::cede_notself = 4 |
992 | CODE: |
1174 | CODE: |
993 | PUTBACK; |
1175 | { |
994 | SV_CORO (next, "Coro::transfer"); |
1176 | struct transfer_args ta; |
995 | SV_CORO (prev, "Coro::transfer"); |
1177 | |
996 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1178 | switch (ix) |
997 | SPAGAIN; |
1179 | { |
|
|
1180 | case 0: |
|
|
1181 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1182 | ta.next = 0; |
|
|
1183 | break; |
|
|
1184 | |
|
|
1185 | case 1: |
|
|
1186 | if (items != 2) |
|
|
1187 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
|
|
1188 | |
|
|
1189 | prepare_transfer (&ta, ST (0), ST (1)); |
|
|
1190 | break; |
|
|
1191 | |
|
|
1192 | case 2: |
|
|
1193 | prepare_schedule (&ta); |
|
|
1194 | break; |
|
|
1195 | |
|
|
1196 | case 3: |
|
|
1197 | prepare_cede (&ta); |
|
|
1198 | break; |
|
|
1199 | |
|
|
1200 | case 4: |
|
|
1201 | if (!prepare_cede_notself (&ta)) |
|
|
1202 | XSRETURN_EMPTY; |
|
|
1203 | |
|
|
1204 | break; |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | BARRIER; |
|
|
1208 | TRANSFER (ta); |
|
|
1209 | |
|
|
1210 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
|
|
1211 | XSRETURN_YES; |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | bool |
|
|
1215 | _destroy (SV *coro_sv) |
|
|
1216 | CODE: |
|
|
1217 | RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
|
|
1218 | OUTPUT: |
|
|
1219 | RETVAL |
998 | |
1220 | |
999 | void |
1221 | void |
1000 | DESTROY(coro) |
|
|
1001 | Coro::State coro |
|
|
1002 | CODE: |
|
|
1003 | |
|
|
1004 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1005 | { |
|
|
1006 | struct coro temp; |
|
|
1007 | |
|
|
1008 | PUTBACK; |
|
|
1009 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
1010 | LOAD(aTHX_ coro); |
|
|
1011 | SPAGAIN; |
|
|
1012 | |
|
|
1013 | destroy_stacks (aTHX); |
|
|
1014 | |
|
|
1015 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1016 | SPAGAIN; |
|
|
1017 | |
|
|
1018 | coro->mainstack = 0; |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | deallocate_stack (coro); |
|
|
1022 | SvREFCNT_dec (coro->args); |
|
|
1023 | Safefree (coro); |
|
|
1024 | |
|
|
1025 | void |
|
|
1026 | _exit(code) |
1222 | _exit (code) |
1027 | int code |
1223 | int code |
1028 | PROTOTYPE: $ |
1224 | PROTOTYPE: $ |
1029 | CODE: |
1225 | CODE: |
1030 | _exit (code); |
1226 | _exit (code); |
1031 | |
1227 | |
1032 | MODULE = Coro::State PACKAGE = Coro::Cont |
1228 | int |
|
|
1229 | cctx_count () |
|
|
1230 | CODE: |
|
|
1231 | RETVAL = cctx_count; |
|
|
1232 | OUTPUT: |
|
|
1233 | RETVAL |
1033 | |
1234 | |
1034 | # this is slightly dirty (should expose a c-level api) |
1235 | int |
1035 | |
1236 | cctx_idle () |
1036 | void |
1237 | CODE: |
1037 | yield(...) |
1238 | RETVAL = cctx_idle; |
1038 | PROTOTYPE: @ |
1239 | OUTPUT: |
1039 | CODE: |
1240 | RETVAL |
1040 | static SV *returnstk; |
|
|
1041 | SV *sv; |
|
|
1042 | AV *defav = GvAV (PL_defgv); |
|
|
1043 | struct coro *prev, *next; |
|
|
1044 | |
|
|
1045 | if (!returnstk) |
|
|
1046 | returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); |
|
|
1047 | |
|
|
1048 | /* set up @_ -- ugly */ |
|
|
1049 | av_clear (defav); |
|
|
1050 | av_fill (defav, items - 1); |
|
|
1051 | while (items--) |
|
|
1052 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1053 | |
|
|
1054 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1055 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1056 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1057 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1058 | SvREFCNT_dec (sv); |
|
|
1059 | |
|
|
1060 | transfer(aTHX_ prev, next, 0); |
|
|
1061 | |
1241 | |
1062 | MODULE = Coro::State PACKAGE = Coro |
1242 | MODULE = Coro::State PACKAGE = Coro |
1063 | |
1243 | |
1064 | # this is slightly dirty (should expose a c-level api) |
|
|
1065 | |
|
|
1066 | BOOT: |
1244 | BOOT: |
1067 | { |
1245 | { |
1068 | int i; |
1246 | int i; |
|
|
1247 | |
1069 | HV *stash = gv_stashpv ("Coro", TRUE); |
1248 | coro_stash = gv_stashpv ("Coro", TRUE); |
1070 | |
1249 | |
1071 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1250 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1072 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1251 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1073 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1252 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1074 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1253 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1075 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1254 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1076 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1255 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1077 | |
1256 | |
1078 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1257 | coro_current = get_sv ("Coro::current", FALSE); |
1079 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1258 | SvREADONLY_on (coro_current); |
1080 | |
1259 | |
1081 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1260 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1082 | coro_ready[i] = newAV (); |
1261 | coro_ready[i] = newAV (); |
1083 | |
1262 | |
1084 | { |
1263 | { |
1085 | SV *sv = perl_get_sv("Coro::API", 1); |
1264 | SV *sv = perl_get_sv("Coro::API", 1); |
1086 | |
1265 | |
1087 | coroapi.schedule = api_schedule; |
1266 | coroapi.schedule = api_schedule; |
|
|
1267 | coroapi.save = api_save; |
1088 | coroapi.cede = api_cede; |
1268 | coroapi.cede = api_cede; |
|
|
1269 | coroapi.cede_notself = api_cede_notself; |
1089 | coroapi.ready = api_ready; |
1270 | coroapi.ready = api_ready; |
|
|
1271 | coroapi.is_ready = api_is_ready; |
1090 | coroapi.nready = &coro_nready; |
1272 | coroapi.nready = &coro_nready; |
1091 | coroapi.current = coro_current; |
1273 | coroapi.current = coro_current; |
1092 | |
1274 | |
1093 | GCoroAPI = &coroapi; |
1275 | GCoroAPI = &coroapi; |
1094 | sv_setiv(sv, (IV)&coroapi); |
1276 | sv_setiv (sv, (IV)&coroapi); |
1095 | SvREADONLY_on(sv); |
1277 | SvREADONLY_on (sv); |
1096 | } |
1278 | } |
1097 | } |
1279 | } |
1098 | |
1280 | |
1099 | #if !PERL_MICRO |
|
|
1100 | |
|
|
1101 | void |
1281 | void |
1102 | ready(self) |
1282 | _set_current (SV *current) |
1103 | SV * self |
|
|
1104 | PROTOTYPE: $ |
1283 | PROTOTYPE: $ |
1105 | CODE: |
1284 | CODE: |
1106 | api_ready (self); |
1285 | SvREFCNT_dec (SvRV (coro_current)); |
1107 | |
1286 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1108 | #endif |
|
|
1109 | |
1287 | |
1110 | int |
1288 | int |
|
|
1289 | prio (Coro::State coro, int newprio = 0) |
|
|
1290 | ALIAS: |
|
|
1291 | nice = 1 |
|
|
1292 | CODE: |
|
|
1293 | { |
|
|
1294 | RETVAL = coro->prio; |
|
|
1295 | |
|
|
1296 | if (items > 1) |
|
|
1297 | { |
|
|
1298 | if (ix) |
|
|
1299 | newprio = coro->prio - newprio; |
|
|
1300 | |
|
|
1301 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1302 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1303 | |
|
|
1304 | coro->prio = newprio; |
|
|
1305 | } |
|
|
1306 | } |
|
|
1307 | OUTPUT: |
|
|
1308 | RETVAL |
|
|
1309 | |
|
|
1310 | SV * |
|
|
1311 | ready (SV *self) |
|
|
1312 | PROTOTYPE: $ |
|
|
1313 | CODE: |
|
|
1314 | RETVAL = boolSV (api_ready (self)); |
|
|
1315 | OUTPUT: |
|
|
1316 | RETVAL |
|
|
1317 | |
|
|
1318 | SV * |
|
|
1319 | is_ready (SV *self) |
|
|
1320 | PROTOTYPE: $ |
|
|
1321 | CODE: |
|
|
1322 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1323 | OUTPUT: |
|
|
1324 | RETVAL |
|
|
1325 | |
|
|
1326 | int |
1111 | nready(...) |
1327 | nready (...) |
1112 | PROTOTYPE: |
1328 | PROTOTYPE: |
1113 | CODE: |
1329 | CODE: |
1114 | RETVAL = coro_nready; |
1330 | RETVAL = coro_nready; |
1115 | OUTPUT: |
1331 | OUTPUT: |
1116 | RETVAL |
1332 | RETVAL |
1117 | |
1333 | |
|
|
1334 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1335 | |
|
|
1336 | SV * |
|
|
1337 | _get_state () |
|
|
1338 | CODE: |
|
|
1339 | { |
|
|
1340 | struct io_state *data; |
|
|
1341 | |
|
|
1342 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1343 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1344 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1345 | SvPOK_only (RETVAL); |
|
|
1346 | |
|
|
1347 | data->errorno = errno; |
|
|
1348 | data->laststype = PL_laststype; |
|
|
1349 | data->laststatval = PL_laststatval; |
|
|
1350 | data->statcache = PL_statcache; |
|
|
1351 | } |
|
|
1352 | OUTPUT: |
|
|
1353 | RETVAL |
|
|
1354 | |
1118 | void |
1355 | void |
1119 | schedule(...) |
1356 | _set_state (char *data_) |
1120 | PROTOTYPE: |
1357 | PROTOTYPE: $ |
1121 | CODE: |
1358 | CODE: |
1122 | api_schedule (); |
1359 | { |
|
|
1360 | struct io_state *data = (void *)data_; |
1123 | |
1361 | |
1124 | void |
1362 | errno = data->errorno; |
1125 | cede(...) |
1363 | PL_laststype = data->laststype; |
1126 | PROTOTYPE: |
1364 | PL_laststatval = data->laststatval; |
1127 | CODE: |
1365 | PL_statcache = data->statcache; |
1128 | api_cede (); |
1366 | } |
1129 | |
1367 | |