1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
1 | #include "libcoro/coro.c" |
4 | |
2 | |
5 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
6 | #include "perl.h" |
4 | #include "perl.h" |
7 | #include "XSUB.h" |
5 | #include "XSUB.h" |
8 | |
6 | |
9 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
10 | |
8 | |
11 | #if PERL_VERSION < 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) |
12 | # ifndef PL_ppaddr |
23 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
24 | # define PL_ppaddr ppaddr |
14 | # endif |
25 | # endif |
15 | # ifndef call_sv |
26 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
27 | # define call_sv perl_call_sv |
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27 | # ifndef IS_PADCONST |
38 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
39 | # define IS_PADCONST(v) 0 |
29 | # endif |
40 | # endif |
30 | #endif |
41 | #endif |
31 | |
42 | |
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43 | #include <stdio.h> |
32 | #include <errno.h> |
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" |
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94 | |
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95 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
59 | |
96 | |
60 | #ifdef USE_ITHREADS |
97 | #ifdef USE_ITHREADS |
61 | static perl_mutex coro_mutex; |
98 | static perl_mutex coro_mutex; |
62 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
99 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
63 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
100 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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66 | # define UNLOCK (void)0 |
103 | # define UNLOCK (void)0 |
67 | #endif |
104 | #endif |
68 | |
105 | |
69 | static struct CoroAPI coroapi; |
106 | static struct CoroAPI coroapi; |
70 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
107 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
71 | static HV *coro_state_stash; |
108 | 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 */ |
109 | static SV *coro_mortal; /* will be freed after next transfer */ |
75 | |
110 | |
76 | /* this is actually not only the c stack but also c registers etc... */ |
111 | static struct coro_cctx *cctx_first; |
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112 | static int cctx_count, cctx_idle; |
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113 | |
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114 | /* this is a structure representing a c-level coroutine */ |
77 | typedef struct { |
115 | typedef struct coro_cctx { |
78 | int refcnt; /* pointer reference counter */ |
116 | 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 | |
117 | |
82 | coro_context cctx; |
118 | /* the stack */ |
83 | |
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84 | void *sptr; |
119 | void *sptr; |
85 | long ssize; /* positive == mmap, otherwise malloc */ |
120 | long ssize; /* positive == mmap, otherwise malloc */ |
86 | } coro_stack; |
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87 | |
121 | |
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122 | /* cpu state */ |
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123 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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124 | JMPENV *top_env; |
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125 | coro_context cctx; |
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126 | |
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127 | int inuse; |
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128 | |
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129 | #if USE_VALGRIND |
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130 | int valgrind_id; |
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131 | #endif |
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132 | } coro_cctx; |
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133 | |
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134 | enum { |
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135 | CF_RUNNING, /* coroutine is running */ |
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136 | CF_READY, /* coroutine is ready */ |
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137 | }; |
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138 | |
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139 | /* this is a structure representing a perl-level coroutine */ |
88 | struct coro { |
140 | struct coro { |
89 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
141 | /* the c coroutine allocated to this perl coroutine, if any */ |
90 | JMPENV start_env; |
142 | coro_cctx *cctx; |
91 | |
143 | |
92 | /* the optional C context */ |
144 | /* data associated with this coroutine (initial args) */ |
93 | coro_stack *stack; |
145 | AV *args; |
94 | void *cursp; |
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95 | int gencnt; |
146 | int refcnt; |
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147 | int flags; |
96 | |
148 | |
97 | /* optionally saved, might be zero */ |
149 | /* optionally saved, might be zero */ |
98 | AV *defav; |
150 | AV *defav; |
99 | SV *defsv; |
151 | SV *defsv; |
100 | SV *errsv; |
152 | SV *errsv; |
101 | |
153 | |
102 | /* saved global state not related to stacks */ |
154 | #define VAR(name,type) type name; |
103 | U8 dowarn; |
155 | # include "state.h" |
104 | I32 in_eval; |
156 | #undef VAR |
105 | |
157 | |
106 | /* the stacks and related info (callchain etc..) */ |
158 | /* coro process data */ |
107 | PERL_SI *curstackinfo; |
159 | int prio; |
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 | CV *compcv; |
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115 | SV **stack_base; |
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116 | SV **stack_max; |
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117 | SV **tmps_stack; |
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118 | I32 tmps_floor; |
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119 | I32 tmps_ix; |
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120 | I32 tmps_max; |
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121 | I32 *markstack; |
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122 | I32 *markstack_ptr; |
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123 | I32 *markstack_max; |
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124 | I32 *scopestack; |
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125 | I32 scopestack_ix; |
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126 | I32 scopestack_max; |
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127 | ANY *savestack; |
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128 | I32 savestack_ix; |
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129 | I32 savestack_max; |
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130 | OP **retstack; |
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131 | I32 retstack_ix; |
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132 | I32 retstack_max; |
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133 | PMOP *curpm; |
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134 | COP *curcop; |
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135 | JMPENV *top_env; |
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136 | |
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137 | /* data associated with this coroutine (initial args) */ |
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138 | AV *args; |
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139 | }; |
160 | }; |
140 | |
161 | |
141 | typedef struct coro *Coro__State; |
162 | typedef struct coro *Coro__State; |
142 | typedef struct coro *Coro__State_or_hashref; |
163 | typedef struct coro *Coro__State_or_hashref; |
143 | |
164 | |
144 | /* mostly copied from op.c:cv_clone2 */ |
165 | static AV * |
145 | STATIC AV * |
166 | coro_clone_padlist (CV *cv) |
146 | clone_padlist (pTHX_ AV *protopadlist) |
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147 | { |
167 | { |
148 | AV *av; |
168 | AV *padlist = CvPADLIST (cv); |
149 | I32 ix; |
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150 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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151 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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152 | SV **pname = AvARRAY (protopad_name); |
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153 | SV **ppad = AvARRAY (protopad); |
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154 | I32 fname = AvFILLp (protopad_name); |
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155 | I32 fpad = AvFILLp (protopad); |
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156 | AV *newpadlist, *newpad_name, *newpad; |
169 | AV *newpadlist, *newpad; |
157 | SV **npad; |
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158 | |
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159 | newpad_name = newAV (); |
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160 | for (ix = fname; ix >= 0; ix--) |
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161 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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162 | |
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163 | newpad = newAV (); |
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164 | av_fill (newpad, AvFILLp (protopad)); |
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165 | npad = AvARRAY (newpad); |
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166 | |
170 | |
167 | newpadlist = newAV (); |
171 | newpadlist = newAV (); |
168 | AvREAL_off (newpadlist); |
172 | AvREAL_off (newpadlist); |
169 | av_store (newpadlist, 0, (SV *) newpad_name); |
173 | #if PERL_VERSION_ATLEAST (5,9,0) |
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174 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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175 | #else |
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176 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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177 | #endif |
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178 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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179 | --AvFILLp (padlist); |
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180 | |
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181 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
170 | av_store (newpadlist, 1, (SV *) newpad); |
182 | av_store (newpadlist, 1, (SV *)newpad); |
171 | |
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172 | av = newAV (); /* will be @_ */ |
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173 | av_extend (av, 0); |
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174 | av_store (newpad, 0, (SV *) av); |
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175 | AvREIFY_on (av); |
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176 | |
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177 | for (ix = fpad; ix > 0; ix--) |
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178 | { |
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179 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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180 | |
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181 | if (namesv && namesv != &PL_sv_undef) |
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182 | { |
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183 | char *name = SvPVX (namesv); /* XXX */ |
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184 | |
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185 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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186 | { /* lexical from outside? */ |
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187 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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188 | } |
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189 | else |
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190 | { /* our own lexical */ |
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191 | SV *sv; |
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192 | if (*name == '&') |
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193 | sv = SvREFCNT_inc (ppad[ix]); |
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194 | else if (*name == '@') |
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195 | sv = (SV *) newAV (); |
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196 | else if (*name == '%') |
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197 | sv = (SV *) newHV (); |
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198 | else |
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199 | sv = NEWSV (0, 0); |
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200 | |
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201 | #ifdef SvPADBUSY |
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202 | if (!SvPADBUSY (sv)) |
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203 | #endif |
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204 | SvPADMY_on (sv); |
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205 | |
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206 | npad[ix] = sv; |
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207 | } |
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208 | } |
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209 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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210 | { |
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211 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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212 | } |
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213 | else |
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214 | { |
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215 | SV *sv = NEWSV (0, 0); |
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216 | SvPADTMP_on (sv); |
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217 | npad[ix] = sv; |
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218 | } |
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219 | } |
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220 | |
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221 | #if 0 /* return -ENOTUNDERSTOOD */ |
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222 | /* Now that vars are all in place, clone nested closures. */ |
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223 | |
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224 | for (ix = fpad; ix > 0; ix--) { |
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225 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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226 | if (namesv |
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227 | && namesv != &PL_sv_undef |
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228 | && !(SvFLAGS(namesv) & SVf_FAKE) |
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229 | && *SvPVX(namesv) == '&' |
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230 | && CvCLONE(ppad[ix])) |
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231 | { |
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232 | CV *kid = cv_clone((CV*)ppad[ix]); |
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233 | SvREFCNT_dec(ppad[ix]); |
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234 | CvCLONE_on(kid); |
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235 | SvPADMY_on(kid); |
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236 | npad[ix] = (SV*)kid; |
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237 | } |
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238 | } |
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239 | #endif |
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240 | |
183 | |
241 | return newpadlist; |
184 | return newpadlist; |
242 | } |
185 | } |
243 | |
186 | |
244 | STATIC void |
187 | static void |
245 | free_padlist (pTHX_ AV *padlist) |
188 | free_padlist (AV *padlist) |
246 | { |
189 | { |
247 | /* may be during global destruction */ |
190 | /* may be during global destruction */ |
248 | if (SvREFCNT (padlist)) |
191 | if (SvREFCNT (padlist)) |
249 | { |
192 | { |
250 | I32 i = AvFILLp (padlist); |
193 | I32 i = AvFILLp (padlist); |
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263 | |
206 | |
264 | SvREFCNT_dec ((SV*)padlist); |
207 | SvREFCNT_dec ((SV*)padlist); |
265 | } |
208 | } |
266 | } |
209 | } |
267 | |
210 | |
268 | STATIC int |
211 | static int |
269 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
212 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
270 | { |
213 | { |
271 | AV *padlist; |
214 | AV *padlist; |
272 | AV *av = (AV *)mg->mg_obj; |
215 | AV *av = (AV *)mg->mg_obj; |
273 | |
216 | |
274 | /* casting is fun. */ |
217 | /* casting is fun. */ |
275 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
218 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
276 | free_padlist (aTHX_ padlist); |
219 | free_padlist (padlist); |
277 | |
220 | |
278 | SvREFCNT_dec (av); |
221 | SvREFCNT_dec (av); |
279 | |
222 | |
280 | return 0; |
223 | return 0; |
281 | } |
224 | } |
282 | |
225 | |
283 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
226 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
284 | |
227 | |
285 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
228 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
286 | |
229 | |
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230 | #define CORO_MAGIC(cv) \ |
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231 | SvMAGIC (cv) \ |
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232 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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233 | ? SvMAGIC (cv) \ |
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234 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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235 | : 0 |
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236 | |
287 | /* the next two functions merely cache the padlists */ |
237 | /* the next two functions merely cache the padlists */ |
288 | STATIC void |
238 | static void |
289 | get_padlist (pTHX_ CV *cv) |
239 | get_padlist (CV *cv) |
290 | { |
240 | { |
291 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
241 | MAGIC *mg = CORO_MAGIC (cv); |
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242 | AV *av; |
292 | |
243 | |
293 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
244 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
294 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
245 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
295 | else |
246 | else |
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247 | { |
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248 | #if 0 |
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249 | /* this is probably cleaner, but also slower? */ |
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250 | CV *cp = Perl_cv_clone (cv); |
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251 | CvPADLIST (cv) = CvPADLIST (cp); |
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252 | CvPADLIST (cp) = 0; |
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253 | SvREFCNT_dec (cp); |
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254 | #else |
296 | CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); |
255 | CvPADLIST (cv) = coro_clone_padlist (cv); |
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256 | #endif |
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257 | } |
297 | } |
258 | } |
298 | |
259 | |
299 | STATIC void |
260 | static void |
300 | put_padlist (pTHX_ CV *cv) |
261 | put_padlist (CV *cv) |
301 | { |
262 | { |
302 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
263 | MAGIC *mg = CORO_MAGIC (cv); |
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264 | AV *av; |
303 | |
265 | |
304 | if (!mg) |
266 | if (!mg) |
305 | { |
267 | { |
306 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
268 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
307 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
269 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
308 | mg->mg_virtual = &vtbl_coro; |
270 | mg->mg_virtual = &vtbl_coro; |
309 | mg->mg_obj = (SV *)newAV (); |
271 | mg->mg_obj = (SV *)newAV (); |
310 | } |
272 | } |
311 | |
273 | |
312 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
274 | av = (AV *)mg->mg_obj; |
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275 | |
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276 | if (AvFILLp (av) >= AvMAX (av)) |
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277 | av_extend (av, AvMAX (av) + 1); |
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278 | |
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279 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
313 | } |
280 | } |
314 | |
281 | |
315 | #define SB do { |
282 | #define SB do { |
316 | #define SE } while (0) |
283 | #define SE } while (0) |
317 | |
284 | |
318 | #define LOAD(state) load_state(aTHX_ (state)); |
285 | #define LOAD(state) load_state((state)); |
319 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
286 | #define SAVE(state,flags) save_state((state),(flags)); |
320 | |
287 | |
321 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
288 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
322 | |
289 | |
323 | static void |
290 | static void |
324 | load_state(pTHX_ Coro__State c) |
291 | load_state(Coro__State c) |
325 | { |
292 | { |
326 | PL_dowarn = c->dowarn; |
293 | #define VAR(name,type) PL_ ## name = c->name; |
327 | PL_in_eval = c->in_eval; |
294 | # include "state.h" |
328 | |
295 | #undef VAR |
329 | PL_curstackinfo = c->curstackinfo; |
|
|
330 | PL_curstack = c->curstack; |
|
|
331 | PL_mainstack = c->mainstack; |
|
|
332 | PL_stack_sp = c->stack_sp; |
|
|
333 | PL_op = c->op; |
|
|
334 | PL_curpad = c->curpad; |
|
|
335 | PL_comppad = c->comppad; |
|
|
336 | PL_compcv = c->compcv; |
|
|
337 | PL_stack_base = c->stack_base; |
|
|
338 | PL_stack_max = c->stack_max; |
|
|
339 | PL_tmps_stack = c->tmps_stack; |
|
|
340 | PL_tmps_floor = c->tmps_floor; |
|
|
341 | PL_tmps_ix = c->tmps_ix; |
|
|
342 | PL_tmps_max = c->tmps_max; |
|
|
343 | PL_markstack = c->markstack; |
|
|
344 | PL_markstack_ptr = c->markstack_ptr; |
|
|
345 | PL_markstack_max = c->markstack_max; |
|
|
346 | PL_scopestack = c->scopestack; |
|
|
347 | PL_scopestack_ix = c->scopestack_ix; |
|
|
348 | PL_scopestack_max = c->scopestack_max; |
|
|
349 | PL_savestack = c->savestack; |
|
|
350 | PL_savestack_ix = c->savestack_ix; |
|
|
351 | PL_savestack_max = c->savestack_max; |
|
|
352 | #if PERL_VERSION < 9 |
|
|
353 | PL_retstack = c->retstack; |
|
|
354 | PL_retstack_ix = c->retstack_ix; |
|
|
355 | PL_retstack_max = c->retstack_max; |
|
|
356 | #endif |
|
|
357 | PL_curpm = c->curpm; |
|
|
358 | PL_curcop = c->curcop; |
|
|
359 | PL_top_env = c->top_env; |
|
|
360 | |
296 | |
361 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
297 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
362 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
298 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
363 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
299 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
364 | |
300 | |
… | |
… | |
367 | CV *cv; |
303 | CV *cv; |
368 | |
304 | |
369 | /* now do the ugly restore mess */ |
305 | /* now do the ugly restore mess */ |
370 | while ((cv = (CV *)POPs)) |
306 | while ((cv = (CV *)POPs)) |
371 | { |
307 | { |
372 | AV *padlist = (AV *)POPs; |
|
|
373 | |
|
|
374 | if (padlist) |
|
|
375 | { |
|
|
376 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
308 | put_padlist (cv); /* mark this padlist as available */ |
377 | CvPADLIST(cv) = padlist; |
309 | CvDEPTH (cv) = PTR2IV (POPs); |
378 | } |
310 | CvPADLIST (cv) = (AV *)POPs; |
379 | |
|
|
380 | ++CvDEPTH(cv); |
|
|
381 | } |
311 | } |
382 | |
312 | |
383 | PUTBACK; |
313 | PUTBACK; |
384 | } |
314 | } |
385 | } |
315 | } |
386 | |
316 | |
387 | static void |
317 | static void |
388 | save_state(pTHX_ Coro__State c, int flags) |
318 | save_state(Coro__State c, int flags) |
389 | { |
319 | { |
390 | { |
320 | { |
391 | dSP; |
321 | dSP; |
392 | I32 cxix = cxstack_ix; |
322 | I32 cxix = cxstack_ix; |
393 | PERL_CONTEXT *ccstk = cxstack; |
323 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
407 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
337 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
408 | |
338 | |
409 | if (CxTYPE(cx) == CXt_SUB) |
339 | if (CxTYPE(cx) == CXt_SUB) |
410 | { |
340 | { |
411 | CV *cv = cx->blk_sub.cv; |
341 | CV *cv = cx->blk_sub.cv; |
|
|
342 | |
412 | if (CvDEPTH(cv)) |
343 | if (CvDEPTH (cv)) |
413 | { |
344 | { |
414 | EXTEND (SP, CvDEPTH(cv)*2); |
345 | EXTEND (SP, 3); |
415 | |
|
|
416 | while (--CvDEPTH(cv)) |
|
|
417 | { |
|
|
418 | /* this tells the restore code to increment CvDEPTH */ |
|
|
419 | PUSHs (Nullsv); |
|
|
420 | PUSHs ((SV *)cv); |
|
|
421 | } |
|
|
422 | |
346 | |
423 | PUSHs ((SV *)CvPADLIST(cv)); |
347 | PUSHs ((SV *)CvPADLIST(cv)); |
|
|
348 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
424 | PUSHs ((SV *)cv); |
349 | PUSHs ((SV *)cv); |
425 | |
350 | |
426 | get_padlist (aTHX_ cv); /* this is a monster */ |
351 | CvDEPTH (cv) = 0; |
|
|
352 | get_padlist (cv); |
427 | } |
353 | } |
428 | } |
354 | } |
429 | #ifdef CXt_FORMAT |
355 | #ifdef CXt_FORMAT |
430 | else if (CxTYPE(cx) == CXt_FORMAT) |
356 | else if (CxTYPE(cx) == CXt_FORMAT) |
431 | { |
357 | { |
… | |
… | |
449 | |
375 | |
450 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
376 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
451 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
377 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
452 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
378 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
453 | |
379 | |
454 | c->dowarn = PL_dowarn; |
380 | #define VAR(name,type)c->name = PL_ ## name; |
455 | c->in_eval = PL_in_eval; |
381 | # include "state.h" |
456 | |
382 | #undef VAR |
457 | c->curstackinfo = PL_curstackinfo; |
|
|
458 | c->curstack = PL_curstack; |
|
|
459 | c->mainstack = PL_mainstack; |
|
|
460 | c->stack_sp = PL_stack_sp; |
|
|
461 | c->op = PL_op; |
|
|
462 | c->curpad = PL_curpad; |
|
|
463 | c->comppad = PL_comppad; |
|
|
464 | c->compcv = PL_compcv; |
|
|
465 | c->stack_base = PL_stack_base; |
|
|
466 | c->stack_max = PL_stack_max; |
|
|
467 | c->tmps_stack = PL_tmps_stack; |
|
|
468 | c->tmps_floor = PL_tmps_floor; |
|
|
469 | c->tmps_ix = PL_tmps_ix; |
|
|
470 | c->tmps_max = PL_tmps_max; |
|
|
471 | c->markstack = PL_markstack; |
|
|
472 | c->markstack_ptr = PL_markstack_ptr; |
|
|
473 | c->markstack_max = PL_markstack_max; |
|
|
474 | c->scopestack = PL_scopestack; |
|
|
475 | c->scopestack_ix = PL_scopestack_ix; |
|
|
476 | c->scopestack_max = PL_scopestack_max; |
|
|
477 | c->savestack = PL_savestack; |
|
|
478 | c->savestack_ix = PL_savestack_ix; |
|
|
479 | c->savestack_max = PL_savestack_max; |
|
|
480 | #if PERL_VERSION < 9 |
|
|
481 | c->retstack = PL_retstack; |
|
|
482 | c->retstack_ix = PL_retstack_ix; |
|
|
483 | c->retstack_max = PL_retstack_max; |
|
|
484 | #endif |
|
|
485 | c->curpm = PL_curpm; |
|
|
486 | c->curcop = PL_curcop; |
|
|
487 | c->top_env = PL_top_env; |
|
|
488 | } |
383 | } |
489 | |
384 | |
490 | /* |
385 | /* |
491 | * allocate various perl stacks. This is an exact copy |
386 | * allocate various perl stacks. This is an exact copy |
492 | * of perl.c:init_stacks, except that it uses less memory |
387 | * of perl.c:init_stacks, except that it uses less memory |
493 | * on the (sometimes correct) assumption that coroutines do |
388 | * on the (sometimes correct) assumption that coroutines do |
494 | * not usually need a lot of stackspace. |
389 | * not usually need a lot of stackspace. |
495 | */ |
390 | */ |
496 | STATIC void |
391 | static void |
497 | coro_init_stacks (pTHX) |
392 | coro_init_stacks () |
498 | { |
393 | { |
499 | LOCK; |
|
|
500 | |
|
|
501 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
394 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
502 | PL_curstackinfo->si_type = PERLSI_MAIN; |
395 | PL_curstackinfo->si_type = PERLSI_MAIN; |
503 | PL_curstack = PL_curstackinfo->si_stack; |
396 | PL_curstack = PL_curstackinfo->si_stack; |
504 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
397 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
505 | |
398 | |
506 | PL_stack_base = AvARRAY(PL_curstack); |
399 | PL_stack_base = AvARRAY(PL_curstack); |
507 | PL_stack_sp = PL_stack_base; |
400 | PL_stack_sp = PL_stack_base; |
508 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
401 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
509 | |
402 | |
510 | New(50,PL_tmps_stack,96,SV*); |
403 | New(50,PL_tmps_stack,128,SV*); |
511 | PL_tmps_floor = -1; |
404 | PL_tmps_floor = -1; |
512 | PL_tmps_ix = -1; |
405 | PL_tmps_ix = -1; |
513 | PL_tmps_max = 96; |
406 | PL_tmps_max = 128; |
514 | |
407 | |
515 | New(54,PL_markstack,16,I32); |
408 | New(54,PL_markstack,32,I32); |
516 | PL_markstack_ptr = PL_markstack; |
409 | PL_markstack_ptr = PL_markstack; |
517 | PL_markstack_max = PL_markstack + 16; |
410 | PL_markstack_max = PL_markstack + 32; |
518 | |
411 | |
519 | #ifdef SET_MARK_OFFSET |
412 | #ifdef SET_MARK_OFFSET |
520 | SET_MARK_OFFSET; |
413 | SET_MARK_OFFSET; |
521 | #endif |
414 | #endif |
522 | |
415 | |
523 | New(54,PL_scopestack,16,I32); |
416 | New(54,PL_scopestack,32,I32); |
524 | PL_scopestack_ix = 0; |
417 | PL_scopestack_ix = 0; |
525 | PL_scopestack_max = 16; |
418 | PL_scopestack_max = 32; |
526 | |
419 | |
527 | New(54,PL_savestack,96,ANY); |
420 | New(54,PL_savestack,64,ANY); |
528 | PL_savestack_ix = 0; |
421 | PL_savestack_ix = 0; |
529 | PL_savestack_max = 96; |
422 | PL_savestack_max = 64; |
530 | |
423 | |
531 | #if PERL_VERSION < 9 |
424 | #if !PERL_VERSION_ATLEAST (5,9,0) |
532 | New(54,PL_retstack,8,OP*); |
425 | New(54,PL_retstack,16,OP*); |
533 | PL_retstack_ix = 0; |
426 | PL_retstack_ix = 0; |
534 | PL_retstack_max = 8; |
427 | PL_retstack_max = 16; |
535 | #endif |
428 | #endif |
536 | |
|
|
537 | UNLOCK; |
|
|
538 | } |
429 | } |
539 | |
430 | |
540 | /* |
431 | /* |
541 | * destroy the stacks, the callchain etc... |
432 | * destroy the stacks, the callchain etc... |
542 | */ |
433 | */ |
543 | STATIC void |
434 | static void |
544 | destroy_stacks(pTHX) |
435 | coro_destroy_stacks () |
545 | { |
436 | { |
546 | if (!IN_DESTRUCT) |
437 | if (!IN_DESTRUCT) |
547 | { |
438 | { |
548 | /* is this ugly, I ask? */ |
439 | /* is this ugly, I ask? */ |
549 | LEAVE_SCOPE (0); |
440 | LEAVE_SCOPE (0); |
… | |
… | |
580 | |
471 | |
581 | Safefree (PL_tmps_stack); |
472 | Safefree (PL_tmps_stack); |
582 | Safefree (PL_markstack); |
473 | Safefree (PL_markstack); |
583 | Safefree (PL_scopestack); |
474 | Safefree (PL_scopestack); |
584 | Safefree (PL_savestack); |
475 | Safefree (PL_savestack); |
585 | #if PERL_VERSION < 9 |
476 | #if !PERL_VERSION_ATLEAST (5,9,0) |
586 | Safefree (PL_retstack); |
477 | Safefree (PL_retstack); |
587 | #endif |
478 | #endif |
588 | } |
479 | } |
589 | |
480 | |
590 | static void |
481 | static void |
591 | allocate_stack (Coro__State ctx, int alloc) |
482 | setup_coro (struct coro *coro) |
592 | { |
|
|
593 | coro_stack *stack; |
|
|
594 | |
|
|
595 | New (0, stack, 1, coro_stack); |
|
|
596 | |
|
|
597 | stack->refcnt = 1; |
|
|
598 | stack->usecnt = 1; |
|
|
599 | stack->gencnt = ctx->gencnt = 0; |
|
|
600 | |
|
|
601 | if (alloc) |
|
|
602 | { |
|
|
603 | #if HAVE_MMAP |
|
|
604 | stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
605 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
606 | if (stack->sptr == (void *)-1) |
|
|
607 | #endif |
|
|
608 | { |
|
|
609 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
|
|
610 | New (0, stack->sptr, STACKSIZE, long); |
|
|
611 | } |
|
|
612 | } |
|
|
613 | else |
|
|
614 | stack->sptr = 0; |
|
|
615 | |
|
|
616 | ctx->stack = stack; |
|
|
617 | } |
|
|
618 | |
|
|
619 | static void |
|
|
620 | deallocate_stack (Coro__State ctx) |
|
|
621 | { |
|
|
622 | coro_stack *stack = ctx->stack; |
|
|
623 | |
|
|
624 | ctx->stack = 0; |
|
|
625 | |
|
|
626 | if (stack) |
|
|
627 | { |
|
|
628 | if (!--stack->refcnt) |
|
|
629 | { |
|
|
630 | #ifdef HAVE_MMAP |
|
|
631 | if (stack->ssize > 0 && stack->sptr) |
|
|
632 | munmap (stack->sptr, stack->ssize); |
|
|
633 | else |
|
|
634 | #endif |
|
|
635 | Safefree (stack->sptr); |
|
|
636 | |
|
|
637 | Safefree (stack); |
|
|
638 | } |
|
|
639 | else if (ctx->gencnt == stack->gencnt) |
|
|
640 | --stack->usecnt; |
|
|
641 | } |
|
|
642 | } |
|
|
643 | |
|
|
644 | static void |
|
|
645 | setup_coro (void *arg) |
|
|
646 | { |
483 | { |
647 | /* |
484 | /* |
648 | * emulate part of the perl startup here. |
485 | * emulate part of the perl startup here. |
649 | */ |
486 | */ |
650 | dTHX; |
|
|
651 | dSP; |
|
|
652 | Coro__State ctx = (Coro__State)arg; |
|
|
653 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
654 | |
487 | |
655 | coro_init_stacks (aTHX); |
488 | coro_init_stacks (); |
|
|
489 | |
656 | /*PL_curcop = 0;*/ |
490 | PL_curcop = 0; |
657 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
491 | PL_in_eval = 0; |
|
|
492 | PL_curpm = 0; |
|
|
493 | |
|
|
494 | { |
|
|
495 | dSP; |
|
|
496 | LOGOP myop; |
|
|
497 | |
|
|
498 | /* I have no idea why this is needed, but it is */ |
|
|
499 | PUSHMARK (SP); |
|
|
500 | |
658 | SvREFCNT_dec (GvAV (PL_defgv)); |
501 | SvREFCNT_dec (GvAV (PL_defgv)); |
659 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
502 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
660 | |
503 | |
661 | SPAGAIN; |
|
|
662 | |
|
|
663 | if (ctx->stack) |
|
|
664 | { |
|
|
665 | ctx->cursp = 0; |
|
|
666 | |
|
|
667 | PUSHMARK(SP); |
|
|
668 | PUTBACK; |
|
|
669 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
670 | |
|
|
671 | if (SvTRUE (ERRSV)) |
|
|
672 | croak (NULL); |
|
|
673 | else |
|
|
674 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
675 | } |
|
|
676 | else |
|
|
677 | { |
|
|
678 | UNOP myop; |
|
|
679 | |
|
|
680 | PL_op = (OP *)&myop; |
|
|
681 | |
|
|
682 | Zero(&myop, 1, UNOP); |
504 | Zero (&myop, 1, LOGOP); |
683 | myop.op_next = Nullop; |
505 | myop.op_next = Nullop; |
684 | myop.op_flags = OPf_WANT_VOID; |
506 | myop.op_flags = OPf_WANT_VOID; |
685 | |
507 | |
|
|
508 | PL_op = (OP *)&myop; |
|
|
509 | |
686 | PUSHMARK(SP); |
510 | PUSHMARK (SP); |
687 | XPUSHs (sub_init); |
511 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
688 | /* |
|
|
689 | * the next line is slightly wrong, as PL_op->op_next |
|
|
690 | * is actually being executed so we skip the first op. |
|
|
691 | * that doesn't matter, though, since it is only |
|
|
692 | * pp_nextstate and we never return... |
|
|
693 | * ah yes, and I don't care anyways ;) |
|
|
694 | */ |
|
|
695 | PUTBACK; |
512 | PUTBACK; |
696 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
513 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
697 | SPAGAIN; |
514 | SPAGAIN; |
698 | |
515 | |
699 | ENTER; /* necessary e.g. for dounwind */ |
516 | ENTER; /* necessary e.g. for dounwind */ |
700 | } |
517 | } |
701 | } |
518 | } |
702 | |
519 | |
703 | static void |
520 | static void |
704 | continue_coro (void *arg) |
521 | free_coro_mortal () |
705 | { |
522 | { |
706 | /* |
|
|
707 | * this is a _very_ stripped down perl interpreter ;) |
|
|
708 | */ |
|
|
709 | dTHX; |
|
|
710 | Coro__State ctx = (Coro__State)arg; |
|
|
711 | |
|
|
712 | PL_top_env = &ctx->start_env; |
|
|
713 | |
|
|
714 | ctx->cursp = 0; |
|
|
715 | PL_op = PL_op->op_next; |
|
|
716 | CALLRUNOPS(aTHX); |
|
|
717 | |
|
|
718 | abort (); |
|
|
719 | } |
|
|
720 | |
|
|
721 | STATIC void |
|
|
722 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
723 | { |
|
|
724 | dSTACKLEVEL; |
|
|
725 | |
|
|
726 | if (prev != next) |
|
|
727 | { |
|
|
728 | if (next->mainstack) |
|
|
729 | { |
|
|
730 | LOCK; |
|
|
731 | SAVE (prev, flags); |
|
|
732 | LOAD (next); |
|
|
733 | UNLOCK; |
|
|
734 | |
|
|
735 | /* mark this state as in-use */ |
|
|
736 | next->mainstack = 0; |
|
|
737 | next->tmps_ix = -2; |
|
|
738 | |
|
|
739 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
740 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
741 | { |
|
|
742 | if (!prev->stack) |
|
|
743 | allocate_stack (prev, 0); |
|
|
744 | else if (prev->cursp != stacklevel |
|
|
745 | && prev->stack->usecnt > 1) |
|
|
746 | { |
|
|
747 | prev->gencnt = ++prev->stack->gencnt; |
|
|
748 | prev->stack->usecnt = 1; |
|
|
749 | } |
|
|
750 | |
|
|
751 | /* has our stack been invalidated? */ |
|
|
752 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
753 | { |
|
|
754 | deallocate_stack (next); |
|
|
755 | allocate_stack (next, 1); |
|
|
756 | coro_create (&(next->stack->cctx), |
|
|
757 | continue_coro, (void *)next, |
|
|
758 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
759 | } |
|
|
760 | |
|
|
761 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
762 | prev->cursp = stacklevel; |
|
|
763 | /* don't add any code here */ |
|
|
764 | } |
|
|
765 | else |
|
|
766 | next->cursp = stacklevel; |
|
|
767 | } |
|
|
768 | else if (next->tmps_ix == -2) |
|
|
769 | croak ("tried to transfer to running coroutine"); |
|
|
770 | else |
|
|
771 | { |
|
|
772 | LOCK; |
|
|
773 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
774 | UNLOCK; |
|
|
775 | |
|
|
776 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
777 | { |
|
|
778 | if (!prev->stack) |
|
|
779 | allocate_stack (prev, 0); |
|
|
780 | |
|
|
781 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
782 | { |
|
|
783 | PL_top_env = &next->start_env; |
|
|
784 | |
|
|
785 | setup_coro (next); |
|
|
786 | next->cursp = stacklevel; |
|
|
787 | |
|
|
788 | prev->stack->refcnt++; |
|
|
789 | prev->stack->usecnt++; |
|
|
790 | next->stack = prev->stack; |
|
|
791 | next->gencnt = prev->gencnt; |
|
|
792 | } |
|
|
793 | else |
|
|
794 | { |
|
|
795 | assert (!next->stack); |
|
|
796 | allocate_stack (next, 1); |
|
|
797 | coro_create (&(next->stack->cctx), |
|
|
798 | setup_coro, (void *)next, |
|
|
799 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
800 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
801 | prev->cursp = stacklevel; |
|
|
802 | /* don't add any code here */ |
|
|
803 | } |
|
|
804 | } |
|
|
805 | else |
|
|
806 | { |
|
|
807 | setup_coro (next); |
|
|
808 | next->cursp = stacklevel; |
|
|
809 | } |
|
|
810 | } |
|
|
811 | } |
|
|
812 | |
|
|
813 | LOCK; |
|
|
814 | if (coro_mortal) |
523 | if (coro_mortal) |
815 | { |
524 | { |
816 | SvREFCNT_dec (coro_mortal); |
525 | SvREFCNT_dec (coro_mortal); |
817 | coro_mortal = 0; |
526 | coro_mortal = 0; |
818 | } |
527 | } |
|
|
528 | } |
|
|
529 | |
|
|
530 | static void NOINLINE |
|
|
531 | prepare_cctx (coro_cctx *cctx) |
|
|
532 | { |
|
|
533 | dSP; |
|
|
534 | LOGOP myop; |
|
|
535 | |
|
|
536 | Zero (&myop, 1, LOGOP); |
|
|
537 | myop.op_next = PL_op; |
|
|
538 | myop.op_flags = OPf_WANT_VOID; |
|
|
539 | |
|
|
540 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
541 | |
|
|
542 | PUSHMARK (SP); |
|
|
543 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
544 | PUTBACK; |
|
|
545 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
546 | SPAGAIN; |
|
|
547 | } |
|
|
548 | |
|
|
549 | static void |
|
|
550 | coro_run (void *arg) |
|
|
551 | { |
|
|
552 | /* coro_run is the alternative epilogue of transfer() */ |
819 | UNLOCK; |
553 | UNLOCK; |
820 | } |
|
|
821 | |
554 | |
822 | #define SV_CORO(sv,func) \ |
555 | /* |
823 | do { \ |
556 | * this is a _very_ stripped down perl interpreter ;) |
824 | if (SvROK (sv)) \ |
557 | */ |
825 | sv = SvRV (sv); \ |
558 | PL_top_env = &PL_start_env; |
826 | \ |
|
|
827 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
828 | { \ |
|
|
829 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
830 | \ |
|
|
831 | if (!he) \ |
|
|
832 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
833 | \ |
|
|
834 | (sv) = SvRV (HeVAL(he)); \ |
|
|
835 | } \ |
|
|
836 | \ |
|
|
837 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
838 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
839 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
840 | \ |
|
|
841 | } while(0) |
|
|
842 | |
559 | |
843 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv)) |
560 | /* inject call to cctx_init */ |
|
|
561 | prepare_cctx ((coro_cctx *)arg); |
844 | |
562 | |
|
|
563 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
564 | perl_run (PL_curinterp); |
|
|
565 | |
|
|
566 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
|
|
567 | abort (); |
|
|
568 | } |
|
|
569 | |
|
|
570 | static coro_cctx * |
|
|
571 | cctx_new () |
|
|
572 | { |
|
|
573 | coro_cctx *cctx; |
|
|
574 | |
|
|
575 | ++cctx_count; |
|
|
576 | |
|
|
577 | New (0, cctx, 1, coro_cctx); |
|
|
578 | |
|
|
579 | #if HAVE_MMAP |
|
|
580 | |
|
|
581 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
582 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
583 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
584 | |
|
|
585 | if (cctx->sptr == (void *)-1) |
|
|
586 | { |
|
|
587 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
588 | _exit (EXIT_FAILURE); |
|
|
589 | } |
|
|
590 | |
|
|
591 | # if STACKGUARD |
|
|
592 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
593 | # endif |
|
|
594 | |
|
|
595 | #else |
|
|
596 | |
|
|
597 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
598 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
599 | |
|
|
600 | if (!cctx->sptr) |
|
|
601 | { |
|
|
602 | perror ("FATAL: unable to malloc stack for coroutine"); |
|
|
603 | _exit (EXIT_FAILURE); |
|
|
604 | } |
|
|
605 | |
|
|
606 | #endif |
|
|
607 | |
|
|
608 | #if USE_VALGRIND |
|
|
609 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
610 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
611 | cctx->ssize + (char *)cctx->sptr |
|
|
612 | ); |
|
|
613 | #endif |
|
|
614 | |
|
|
615 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
|
|
616 | |
|
|
617 | return cctx; |
|
|
618 | } |
|
|
619 | |
|
|
620 | static void |
|
|
621 | cctx_destroy (coro_cctx *cctx) |
|
|
622 | { |
|
|
623 | if (!cctx) |
|
|
624 | return; |
|
|
625 | |
|
|
626 | --cctx_count; |
|
|
627 | |
|
|
628 | #if USE_VALGRIND |
|
|
629 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
630 | #endif |
|
|
631 | |
|
|
632 | #if HAVE_MMAP |
|
|
633 | munmap (cctx->sptr, cctx->ssize); |
|
|
634 | #else |
|
|
635 | Safefree (cctx->sptr); |
|
|
636 | #endif |
|
|
637 | |
|
|
638 | Safefree (cctx); |
|
|
639 | } |
|
|
640 | |
|
|
641 | static coro_cctx * |
|
|
642 | cctx_get () |
|
|
643 | { |
|
|
644 | coro_cctx *cctx; |
|
|
645 | |
|
|
646 | if (cctx_first) |
|
|
647 | { |
|
|
648 | cctx = cctx_first; |
|
|
649 | cctx_first = cctx->next; |
|
|
650 | --cctx_idle; |
|
|
651 | } |
|
|
652 | else |
|
|
653 | { |
|
|
654 | cctx = cctx_new (); |
|
|
655 | PL_op = PL_op->op_next; |
|
|
656 | } |
|
|
657 | |
|
|
658 | return cctx; |
|
|
659 | } |
|
|
660 | |
|
|
661 | static void |
|
|
662 | cctx_put (coro_cctx *cctx) |
|
|
663 | { |
|
|
664 | /* free another cctx if overlimit */ |
|
|
665 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
666 | { |
|
|
667 | coro_cctx *first = cctx_first; |
|
|
668 | cctx_first = first->next; |
|
|
669 | --cctx_idle; |
|
|
670 | |
|
|
671 | assert (!first->inuse); |
|
|
672 | cctx_destroy (first); |
|
|
673 | } |
|
|
674 | |
|
|
675 | ++cctx_idle; |
|
|
676 | cctx->next = cctx_first; |
|
|
677 | cctx_first = cctx; |
|
|
678 | } |
|
|
679 | |
|
|
680 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
681 | static void NOINLINE |
|
|
682 | transfer (struct coro *prev, struct coro *next, int flags) |
|
|
683 | { |
|
|
684 | dSTACKLEVEL; |
|
|
685 | |
|
|
686 | /* sometimes transfer is only called to set idle_sp */ |
|
|
687 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
688 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
689 | else if (prev != next) |
|
|
690 | { |
|
|
691 | coro_cctx *prev__cctx; |
|
|
692 | |
|
|
693 | if (!prev->cctx) |
|
|
694 | { |
|
|
695 | /* create a new empty context */ |
|
|
696 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
697 | prev->cctx->inuse = 1; |
|
|
698 | prev->flags |= CF_RUNNING; |
|
|
699 | } |
|
|
700 | |
|
|
701 | if (!prev->flags & CF_RUNNING) |
|
|
702 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
703 | |
|
|
704 | if (next->flags & CF_RUNNING) |
|
|
705 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
706 | |
|
|
707 | prev->flags &= ~CF_RUNNING; |
|
|
708 | next->flags |= CF_RUNNING; |
|
|
709 | |
|
|
710 | LOCK; |
|
|
711 | |
|
|
712 | if (next->mainstack) |
|
|
713 | { |
|
|
714 | /* coroutine already started */ |
|
|
715 | SAVE (prev, flags); |
|
|
716 | LOAD (next); |
|
|
717 | } |
|
|
718 | else |
|
|
719 | { |
|
|
720 | /* need to start coroutine */ |
|
|
721 | /* first get rid of the old state */ |
|
|
722 | SAVE (prev, -1); |
|
|
723 | /* setup coroutine call */ |
|
|
724 | setup_coro (next); |
|
|
725 | /* need a new stack */ |
|
|
726 | assert (!next->stack); |
|
|
727 | } |
|
|
728 | |
|
|
729 | prev__cctx = prev->cctx; |
|
|
730 | |
|
|
731 | /* possibly "free" the cctx */ |
|
|
732 | if (prev__cctx->idle_sp == STACKLEVEL) |
|
|
733 | { |
|
|
734 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
735 | assert (PL_top_env == prev__cctx->top_env); |
|
|
736 | |
|
|
737 | cctx_put (prev__cctx); |
|
|
738 | prev->cctx = 0; |
|
|
739 | } |
|
|
740 | |
|
|
741 | if (!next->cctx) |
|
|
742 | next->cctx = cctx_get (); |
|
|
743 | |
|
|
744 | if (prev__cctx != next->cctx) |
|
|
745 | { |
|
|
746 | assert ( prev__cctx->inuse); |
|
|
747 | assert (!next->cctx->inuse); |
|
|
748 | |
|
|
749 | prev__cctx->inuse = 0; |
|
|
750 | next->cctx->inuse = 1; |
|
|
751 | |
|
|
752 | prev__cctx->top_env = PL_top_env; |
|
|
753 | PL_top_env = next->cctx->top_env; |
|
|
754 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
755 | } |
|
|
756 | |
|
|
757 | free_coro_mortal (); |
|
|
758 | |
|
|
759 | UNLOCK; |
|
|
760 | } |
|
|
761 | } |
|
|
762 | |
|
|
763 | struct transfer_args |
|
|
764 | { |
|
|
765 | struct coro *prev, *next; |
|
|
766 | int flags; |
|
|
767 | }; |
|
|
768 | |
|
|
769 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
770 | |
|
|
771 | static void |
|
|
772 | coro_state_destroy (struct coro *coro) |
|
|
773 | { |
|
|
774 | if (coro->refcnt--) |
|
|
775 | return; |
|
|
776 | |
|
|
777 | if (coro->flags & CF_RUNNING) |
|
|
778 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
779 | |
|
|
780 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
781 | { |
|
|
782 | struct coro temp; |
|
|
783 | |
|
|
784 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
785 | LOAD (coro); |
|
|
786 | |
|
|
787 | coro_destroy_stacks (); |
|
|
788 | |
|
|
789 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
790 | |
|
|
791 | coro->mainstack = 0; |
|
|
792 | } |
|
|
793 | |
|
|
794 | cctx_destroy (coro->cctx); |
|
|
795 | SvREFCNT_dec (coro->args); |
|
|
796 | Safefree (coro); |
|
|
797 | } |
|
|
798 | |
845 | static void |
799 | static int |
|
|
800 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
801 | { |
|
|
802 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
803 | mg->mg_ptr = 0; |
|
|
804 | |
|
|
805 | coro_state_destroy (coro); |
|
|
806 | |
|
|
807 | return 0; |
|
|
808 | } |
|
|
809 | |
|
|
810 | static int |
|
|
811 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
812 | { |
|
|
813 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
814 | |
|
|
815 | ++coro->refcnt; |
|
|
816 | |
|
|
817 | return 0; |
|
|
818 | } |
|
|
819 | |
|
|
820 | static MGVTBL coro_state_vtbl = { |
|
|
821 | 0, 0, 0, 0, |
|
|
822 | coro_state_clear, |
|
|
823 | 0, |
|
|
824 | #ifdef MGf_DUP |
|
|
825 | coro_state_dup, |
|
|
826 | #else |
|
|
827 | # define MGf_DUP 0 |
|
|
828 | #endif |
|
|
829 | }; |
|
|
830 | |
|
|
831 | static struct coro * |
|
|
832 | SvSTATE (SV *coro) |
|
|
833 | { |
|
|
834 | HV *stash; |
|
|
835 | MAGIC *mg; |
|
|
836 | |
|
|
837 | if (SvROK (coro)) |
|
|
838 | coro = SvRV (coro); |
|
|
839 | |
|
|
840 | stash = SvSTASH (coro); |
|
|
841 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
842 | { |
|
|
843 | /* very slow, but rare, check */ |
|
|
844 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
845 | croak ("Coro::State object required"); |
|
|
846 | } |
|
|
847 | |
|
|
848 | mg = SvMAGIC (coro); |
|
|
849 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
850 | return (struct coro *)mg->mg_ptr; |
|
|
851 | } |
|
|
852 | |
|
|
853 | static void |
|
|
854 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
855 | { |
|
|
856 | ta->prev = SvSTATE (prev); |
|
|
857 | ta->next = SvSTATE (next); |
|
|
858 | ta->flags = flags; |
|
|
859 | } |
|
|
860 | |
|
|
861 | static void |
846 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
862 | api_transfer (SV *prev, SV *next, int flags) |
847 | { |
863 | { |
848 | SV_CORO (prev, "Coro::transfer"); |
864 | dTHX; |
849 | SV_CORO (next, "Coro::transfer"); |
865 | struct transfer_args ta; |
850 | |
866 | |
851 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
867 | prepare_transfer (&ta, prev, next, flags); |
|
|
868 | TRANSFER (ta); |
852 | } |
869 | } |
853 | |
870 | |
854 | /** Coro ********************************************************************/ |
871 | /** Coro ********************************************************************/ |
855 | |
872 | |
856 | #define PRIO_MAX 3 |
873 | #define PRIO_MAX 3 |
… | |
… | |
860 | #define PRIO_IDLE -3 |
877 | #define PRIO_IDLE -3 |
861 | #define PRIO_MIN -4 |
878 | #define PRIO_MIN -4 |
862 | |
879 | |
863 | /* for Coro.pm */ |
880 | /* for Coro.pm */ |
864 | static GV *coro_current, *coro_idle; |
881 | static GV *coro_current, *coro_idle; |
865 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
882 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
866 | static int coro_nready; |
883 | static int coro_nready; |
867 | |
884 | |
868 | static void |
885 | static void |
869 | coro_enq (pTHX_ SV *sv) |
886 | coro_enq (SV *coro_sv) |
870 | { |
887 | { |
871 | SV **xprio; |
|
|
872 | int prio; |
|
|
873 | |
|
|
874 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
875 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
876 | |
|
|
877 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
878 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
879 | |
|
|
880 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
881 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
882 | : prio; |
|
|
883 | |
|
|
884 | av_push (coro_ready [prio - PRIO_MIN], sv); |
888 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
885 | coro_nready++; |
889 | coro_nready++; |
886 | } |
890 | } |
887 | |
891 | |
888 | static SV * |
892 | static SV * |
889 | coro_deq (pTHX_ int min_prio) |
893 | coro_deq (int min_prio) |
890 | { |
894 | { |
891 | int prio = PRIO_MAX - PRIO_MIN; |
895 | int prio = PRIO_MAX - PRIO_MIN; |
892 | |
896 | |
893 | min_prio -= PRIO_MIN; |
897 | min_prio -= PRIO_MIN; |
894 | if (min_prio < 0) |
898 | if (min_prio < 0) |
895 | min_prio = 0; |
899 | min_prio = 0; |
896 | |
900 | |
897 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
901 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
898 | if (av_len (coro_ready[prio]) >= 0) |
902 | if (AvFILLp (coro_ready [prio]) >= 0) |
899 | { |
903 | { |
900 | coro_nready--; |
904 | coro_nready--; |
901 | return av_shift (coro_ready[prio]); |
905 | return av_shift (coro_ready [prio]); |
902 | } |
906 | } |
903 | |
907 | |
904 | return 0; |
908 | return 0; |
905 | } |
909 | } |
906 | |
910 | |
907 | static void |
911 | static int |
908 | api_ready (SV *coro) |
912 | api_ready (SV *coro_sv) |
|
|
913 | { |
|
|
914 | struct coro *coro; |
|
|
915 | |
|
|
916 | if (SvROK (coro_sv)) |
|
|
917 | coro_sv = SvRV (coro_sv); |
|
|
918 | |
|
|
919 | coro = SvSTATE (coro_sv); |
|
|
920 | |
|
|
921 | if (coro->flags & CF_READY) |
|
|
922 | return 0; |
|
|
923 | |
|
|
924 | if (coro->flags & CF_RUNNING) |
|
|
925 | croak ("Coro::ready called on currently running coroutine"); |
|
|
926 | |
|
|
927 | coro->flags |= CF_READY; |
|
|
928 | |
|
|
929 | LOCK; |
|
|
930 | coro_enq (SvREFCNT_inc (coro_sv)); |
|
|
931 | UNLOCK; |
|
|
932 | |
|
|
933 | return 1; |
|
|
934 | } |
|
|
935 | |
|
|
936 | static int |
|
|
937 | api_is_ready (SV *coro_sv) |
|
|
938 | { |
|
|
939 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
|
|
940 | } |
|
|
941 | |
|
|
942 | static void |
|
|
943 | prepare_schedule (struct transfer_args *ta) |
|
|
944 | { |
|
|
945 | SV *current, *prev, *next; |
|
|
946 | |
|
|
947 | current = GvSV (coro_current); |
|
|
948 | |
|
|
949 | for (;;) |
|
|
950 | { |
|
|
951 | LOCK; |
|
|
952 | next = coro_deq (PRIO_MIN); |
|
|
953 | UNLOCK; |
|
|
954 | |
|
|
955 | if (next) |
|
|
956 | break; |
|
|
957 | |
|
|
958 | { |
|
|
959 | dSP; |
|
|
960 | |
|
|
961 | ENTER; |
|
|
962 | SAVETMPS; |
|
|
963 | |
|
|
964 | PUSHMARK (SP); |
|
|
965 | PUTBACK; |
|
|
966 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
967 | |
|
|
968 | FREETMPS; |
|
|
969 | LEAVE; |
|
|
970 | } |
|
|
971 | } |
|
|
972 | |
|
|
973 | prev = SvRV (current); |
|
|
974 | SvRV (current) = next; |
|
|
975 | |
|
|
976 | /* free this only after the transfer */ |
|
|
977 | LOCK; |
|
|
978 | free_coro_mortal (); |
|
|
979 | UNLOCK; |
|
|
980 | coro_mortal = prev; |
|
|
981 | |
|
|
982 | ta->prev = SvSTATE (prev); |
|
|
983 | ta->next = SvSTATE (next); |
|
|
984 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
985 | |
|
|
986 | ta->next->flags &= ~CF_READY; |
|
|
987 | } |
|
|
988 | |
|
|
989 | static void |
|
|
990 | prepare_cede (struct transfer_args *ta) |
|
|
991 | { |
|
|
992 | api_ready (GvSV (coro_current)); |
|
|
993 | |
|
|
994 | prepare_schedule (ta); |
|
|
995 | } |
|
|
996 | |
|
|
997 | static void |
|
|
998 | api_schedule (void) |
909 | { |
999 | { |
910 | dTHX; |
1000 | dTHX; |
|
|
1001 | struct transfer_args ta; |
911 | |
1002 | |
912 | if (SvROK (coro)) |
1003 | prepare_schedule (&ta); |
913 | coro = SvRV (coro); |
1004 | TRANSFER (ta); |
914 | |
|
|
915 | LOCK; |
|
|
916 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
917 | UNLOCK; |
|
|
918 | } |
1005 | } |
919 | |
1006 | |
920 | static void |
1007 | static void |
921 | api_schedule (void) |
1008 | api_cede (void) |
922 | { |
1009 | { |
923 | dTHX; |
1010 | dTHX; |
|
|
1011 | struct transfer_args ta; |
924 | |
1012 | |
925 | SV *prev, *next; |
1013 | prepare_cede (&ta); |
926 | |
1014 | TRANSFER (ta); |
927 | LOCK; |
|
|
928 | |
|
|
929 | prev = SvRV (GvSV (coro_current)); |
|
|
930 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
931 | |
|
|
932 | if (!next) |
|
|
933 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
934 | |
|
|
935 | /* free this only after the transfer */ |
|
|
936 | coro_mortal = prev; |
|
|
937 | SV_CORO (prev, "Coro::schedule"); |
|
|
938 | |
|
|
939 | SvRV (GvSV (coro_current)) = next; |
|
|
940 | |
|
|
941 | SV_CORO (next, "Coro::schedule"); |
|
|
942 | |
|
|
943 | UNLOCK; |
|
|
944 | |
|
|
945 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
946 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
947 | } |
|
|
948 | |
|
|
949 | static void |
|
|
950 | api_cede (void) |
|
|
951 | { |
|
|
952 | dTHX; |
|
|
953 | |
|
|
954 | LOCK; |
|
|
955 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
956 | UNLOCK; |
|
|
957 | |
|
|
958 | api_schedule (); |
|
|
959 | } |
1015 | } |
960 | |
1016 | |
961 | MODULE = Coro::State PACKAGE = Coro::State |
1017 | MODULE = Coro::State PACKAGE = Coro::State |
962 | |
1018 | |
963 | PROTOTYPES: ENABLE |
1019 | PROTOTYPES: DISABLE |
964 | |
1020 | |
965 | BOOT: |
1021 | BOOT: |
966 | { /* {} necessary for stoopid perl-5.6.x */ |
1022 | { |
967 | #ifdef USE_ITHREADS |
1023 | #ifdef USE_ITHREADS |
968 | MUTEX_INIT (&coro_mutex); |
1024 | MUTEX_INIT (&coro_mutex); |
969 | #endif |
1025 | #endif |
|
|
1026 | BOOT_PAGESIZE; |
970 | |
1027 | |
971 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
972 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
973 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1028 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
974 | |
1029 | |
975 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1030 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
976 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1031 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
977 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1032 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
978 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
979 | |
1033 | |
980 | main_mainstack = PL_mainstack; |
1034 | main_mainstack = PL_mainstack; |
981 | |
1035 | |
982 | coroapi.ver = CORO_API_VERSION; |
1036 | coroapi.ver = CORO_API_VERSION; |
983 | coroapi.transfer = api_transfer; |
1037 | coroapi.transfer = api_transfer; |
984 | } |
|
|
985 | |
1038 | |
986 | Coro::State |
1039 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
987 | _newprocess(args) |
1040 | } |
988 | SV * args |
1041 | |
989 | PROTOTYPE: $ |
1042 | SV * |
|
|
1043 | new (char *klass, ...) |
990 | CODE: |
1044 | CODE: |
991 | Coro__State coro; |
1045 | { |
|
|
1046 | struct coro *coro; |
|
|
1047 | HV *hv; |
|
|
1048 | int i; |
992 | |
1049 | |
993 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
994 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
995 | |
|
|
996 | Newz (0, coro, 1, struct coro); |
1050 | Newz (0, coro, 1, struct coro); |
|
|
1051 | coro->args = newAV (); |
997 | |
1052 | |
998 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1053 | hv = newHV (); |
999 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
1054 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1000 | /*coro->stack = 0;*/ |
1055 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1001 | |
1056 | |
1002 | /* same as JMPENV_BOOTSTRAP */ |
1057 | for (i = 1; i < items; i++) |
1003 | /* we might be able to recycle start_env, but safe is safe */ |
1058 | av_push (coro->args, newSVsv (ST (i))); |
1004 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
1059 | } |
1005 | coro->start_env.je_ret = -1; |
|
|
1006 | coro->start_env.je_mustcatch = TRUE; |
|
|
1007 | |
|
|
1008 | RETVAL = coro; |
|
|
1009 | OUTPUT: |
1060 | OUTPUT: |
1010 | RETVAL |
1061 | RETVAL |
1011 | |
1062 | |
1012 | void |
1063 | void |
1013 | transfer(prev, next, flags) |
1064 | _set_stacklevel (...) |
1014 | SV *prev |
1065 | ALIAS: |
1015 | SV *next |
1066 | Coro::State::transfer = 1 |
1016 | int flags |
1067 | Coro::schedule = 2 |
1017 | PROTOTYPE: @ |
1068 | Coro::cede = 3 |
|
|
1069 | Coro::Cont::yield = 4 |
1018 | CODE: |
1070 | CODE: |
1019 | PUTBACK; |
1071 | { |
1020 | SV_CORO (next, "Coro::transfer"); |
1072 | struct transfer_args ta; |
1021 | SV_CORO (prev, "Coro::transfer"); |
1073 | |
1022 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1074 | switch (ix) |
1023 | SPAGAIN; |
1075 | { |
|
|
1076 | case 0: |
|
|
1077 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1078 | ta.next = 0; |
|
|
1079 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1080 | break; |
|
|
1081 | |
|
|
1082 | case 1: |
|
|
1083 | if (items != 3) |
|
|
1084 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1085 | |
|
|
1086 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1087 | break; |
|
|
1088 | |
|
|
1089 | case 2: |
|
|
1090 | prepare_schedule (&ta); |
|
|
1091 | break; |
|
|
1092 | |
|
|
1093 | case 3: |
|
|
1094 | prepare_cede (&ta); |
|
|
1095 | break; |
|
|
1096 | |
|
|
1097 | case 4: |
|
|
1098 | { |
|
|
1099 | SV *yieldstack; |
|
|
1100 | SV *sv; |
|
|
1101 | AV *defav = GvAV (PL_defgv); |
|
|
1102 | |
|
|
1103 | yieldstack = *hv_fetch ( |
|
|
1104 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1105 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1106 | 0 |
|
|
1107 | ); |
|
|
1108 | |
|
|
1109 | /* set up @_ -- ugly */ |
|
|
1110 | av_clear (defav); |
|
|
1111 | av_fill (defav, items - 1); |
|
|
1112 | while (items--) |
|
|
1113 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1114 | |
|
|
1115 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1116 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1117 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1118 | ta.flags = 0; |
|
|
1119 | SvREFCNT_dec (sv); |
|
|
1120 | } |
|
|
1121 | break; |
|
|
1122 | |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | TRANSFER (ta); |
|
|
1126 | } |
1024 | |
1127 | |
1025 | void |
1128 | void |
1026 | DESTROY(coro) |
1129 | _clone_state_from (SV *dst, SV *src) |
1027 | Coro::State coro |
1130 | CODE: |
1028 | CODE: |
1131 | { |
|
|
1132 | struct coro *coro_src = SvSTATE (src); |
1029 | |
1133 | |
1030 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1134 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
1031 | { |
|
|
1032 | struct coro temp; |
|
|
1033 | |
1135 | |
1034 | PUTBACK; |
1136 | ++coro_src->refcnt; |
1035 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1137 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1036 | LOAD (aTHX_ coro); |
1138 | } |
1037 | SPAGAIN; |
|
|
1038 | |
|
|
1039 | destroy_stacks (aTHX); |
|
|
1040 | |
|
|
1041 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1042 | SPAGAIN; |
|
|
1043 | |
|
|
1044 | coro->mainstack = 0; |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | deallocate_stack (coro); |
|
|
1048 | SvREFCNT_dec (coro->args); |
|
|
1049 | Safefree (coro); |
|
|
1050 | |
1139 | |
1051 | void |
1140 | void |
1052 | _exit(code) |
1141 | _exit (code) |
1053 | int code |
1142 | int code |
1054 | PROTOTYPE: $ |
1143 | PROTOTYPE: $ |
1055 | CODE: |
1144 | CODE: |
1056 | _exit (code); |
1145 | _exit (code); |
1057 | |
1146 | |
1058 | MODULE = Coro::State PACKAGE = Coro::Cont |
1147 | int |
|
|
1148 | cctx_count () |
|
|
1149 | CODE: |
|
|
1150 | RETVAL = cctx_count; |
|
|
1151 | OUTPUT: |
|
|
1152 | RETVAL |
1059 | |
1153 | |
1060 | # this is slightly dirty (should expose a c-level api) |
1154 | int |
1061 | |
1155 | cctx_idle () |
1062 | void |
1156 | CODE: |
1063 | yield(...) |
1157 | RETVAL = cctx_idle; |
1064 | PROTOTYPE: @ |
1158 | OUTPUT: |
1065 | CODE: |
1159 | RETVAL |
1066 | SV *yieldstack; |
|
|
1067 | SV *sv; |
|
|
1068 | AV *defav = GvAV (PL_defgv); |
|
|
1069 | struct coro *prev, *next; |
|
|
1070 | |
|
|
1071 | yieldstack = *hv_fetch ( |
|
|
1072 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1073 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1074 | 0 |
|
|
1075 | ); |
|
|
1076 | |
|
|
1077 | /* set up @_ -- ugly */ |
|
|
1078 | av_clear (defav); |
|
|
1079 | av_fill (defav, items - 1); |
|
|
1080 | while (items--) |
|
|
1081 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1082 | |
|
|
1083 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1084 | prev = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)))); |
|
|
1085 | next = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)))); |
|
|
1086 | SvREFCNT_dec (sv); |
|
|
1087 | |
|
|
1088 | transfer (aTHX_ prev, next, 0); |
|
|
1089 | |
1160 | |
1090 | MODULE = Coro::State PACKAGE = Coro |
1161 | MODULE = Coro::State PACKAGE = Coro |
1091 | |
1162 | |
1092 | # this is slightly dirty (should expose a c-level api) |
|
|
1093 | |
|
|
1094 | BOOT: |
1163 | BOOT: |
1095 | { |
1164 | { |
1096 | int i; |
1165 | int i; |
|
|
1166 | |
1097 | HV *stash = gv_stashpv ("Coro", TRUE); |
1167 | coro_stash = gv_stashpv ("Coro", TRUE); |
1098 | |
1168 | |
1099 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1169 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1100 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1170 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1101 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1171 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1102 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1172 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1103 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1173 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1104 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1174 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1105 | |
1175 | |
1106 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1176 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1107 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1177 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1108 | |
1178 | |
1109 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1179 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1113 | SV *sv = perl_get_sv("Coro::API", 1); |
1183 | SV *sv = perl_get_sv("Coro::API", 1); |
1114 | |
1184 | |
1115 | coroapi.schedule = api_schedule; |
1185 | coroapi.schedule = api_schedule; |
1116 | coroapi.cede = api_cede; |
1186 | coroapi.cede = api_cede; |
1117 | coroapi.ready = api_ready; |
1187 | coroapi.ready = api_ready; |
|
|
1188 | coroapi.is_ready = api_is_ready; |
1118 | coroapi.nready = &coro_nready; |
1189 | coroapi.nready = &coro_nready; |
1119 | coroapi.current = coro_current; |
1190 | coroapi.current = coro_current; |
1120 | |
1191 | |
1121 | GCoroAPI = &coroapi; |
1192 | GCoroAPI = &coroapi; |
1122 | sv_setiv(sv, (IV)&coroapi); |
1193 | sv_setiv (sv, (IV)&coroapi); |
1123 | SvREADONLY_on(sv); |
1194 | SvREADONLY_on (sv); |
1124 | } |
1195 | } |
1125 | } |
1196 | } |
1126 | |
1197 | |
1127 | #if !PERL_MICRO |
1198 | int |
|
|
1199 | prio (Coro::State coro, int newprio = 0) |
|
|
1200 | ALIAS: |
|
|
1201 | nice = 1 |
|
|
1202 | CODE: |
|
|
1203 | { |
|
|
1204 | RETVAL = coro->prio; |
1128 | |
1205 | |
1129 | void |
1206 | if (items > 1) |
|
|
1207 | { |
|
|
1208 | if (ix) |
|
|
1209 | newprio += coro->prio; |
|
|
1210 | |
|
|
1211 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1212 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1213 | |
|
|
1214 | coro->prio = newprio; |
|
|
1215 | } |
|
|
1216 | } |
|
|
1217 | |
|
|
1218 | SV * |
1130 | ready(self) |
1219 | ready (SV *self) |
1131 | SV * self |
|
|
1132 | PROTOTYPE: $ |
1220 | PROTOTYPE: $ |
1133 | CODE: |
1221 | CODE: |
1134 | api_ready (self); |
1222 | RETVAL = boolSV (api_ready (self)); |
|
|
1223 | OUTPUT: |
|
|
1224 | RETVAL |
1135 | |
1225 | |
1136 | #endif |
1226 | SV * |
|
|
1227 | is_ready (SV *self) |
|
|
1228 | PROTOTYPE: $ |
|
|
1229 | CODE: |
|
|
1230 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1231 | OUTPUT: |
|
|
1232 | RETVAL |
1137 | |
1233 | |
1138 | int |
1234 | int |
1139 | nready(...) |
1235 | nready (...) |
1140 | PROTOTYPE: |
1236 | PROTOTYPE: |
1141 | CODE: |
1237 | CODE: |
1142 | RETVAL = coro_nready; |
1238 | RETVAL = coro_nready; |
1143 | OUTPUT: |
1239 | OUTPUT: |
1144 | RETVAL |
1240 | RETVAL |
1145 | |
1241 | |
1146 | void |
1242 | MODULE = Coro::State PACKAGE = Coro::AIO |
1147 | schedule(...) |
|
|
1148 | PROTOTYPE: |
|
|
1149 | CODE: |
|
|
1150 | api_schedule (); |
|
|
1151 | |
1243 | |
1152 | void |
|
|
1153 | cede(...) |
|
|
1154 | PROTOTYPE: |
|
|
1155 | CODE: |
|
|
1156 | api_cede (); |
|
|
1157 | |
|
|
1158 | # and these are hacks |
|
|
1159 | SV * |
1244 | SV * |
1160 | _aio_get_state () |
1245 | _get_state () |
1161 | CODE: |
1246 | CODE: |
1162 | { |
1247 | { |
1163 | struct { |
1248 | struct { |
1164 | int errorno; |
1249 | int errorno; |
1165 | int laststype; |
1250 | int laststype; |
… | |
… | |
1176 | } |
1261 | } |
1177 | OUTPUT: |
1262 | OUTPUT: |
1178 | RETVAL |
1263 | RETVAL |
1179 | |
1264 | |
1180 | void |
1265 | void |
1181 | _aio_set_state (char *data_) |
1266 | _set_state (char *data_) |
1182 | PROTOTYPE: $ |
1267 | PROTOTYPE: $ |
1183 | CODE: |
1268 | CODE: |
1184 | { |
1269 | { |
1185 | struct { |
1270 | struct { |
1186 | int errorno; |
1271 | int errorno; |