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