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 | #include <stdio.h> |
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10 | #include <errno.h> |
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11 | #include <assert.h> |
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12 | |
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13 | #ifdef HAVE_MMAP |
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14 | # include <unistd.h> |
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15 | # include <sys/mman.h> |
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16 | # ifndef MAP_ANONYMOUS |
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17 | # ifdef MAP_ANON |
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18 | # define MAP_ANONYMOUS MAP_ANON |
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19 | # else |
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20 | # undef HAVE_MMAP |
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21 | # endif |
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22 | # endif |
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23 | # include <limits.h> |
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24 | # ifndef PAGESIZE |
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25 | # define PAGESIZE pagesize |
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26 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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27 | static long pagesize; |
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28 | # else |
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29 | # define BOOT_PAGESIZE (void)0 |
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30 | # endif |
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31 | #else |
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32 | # define PAGESIZE 0 |
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33 | # define BOOT_PAGESIZE (void)0 |
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34 | #endif |
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35 | |
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36 | #if USE_VALGRIND |
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37 | # include <valgrind/valgrind.h> |
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38 | #endif |
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39 | |
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40 | /* the maximum number of idle cctx that will be pooled */ |
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41 | #define MAX_IDLE_CCTX 8 |
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42 | |
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43 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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44 | (PERL_REVISION > (a) \ |
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45 | || (PERL_REVISION == (a) \ |
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46 | && (PERL_VERSION > (b) \ |
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47 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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48 | |
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49 | #if !PERL_VERSION_ATLEAST (5,6,0) |
12 | # ifndef PL_ppaddr |
50 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
51 | # define PL_ppaddr ppaddr |
14 | # endif |
52 | # endif |
15 | # ifndef call_sv |
53 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
54 | # define call_sv perl_call_sv |
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27 | # ifndef IS_PADCONST |
65 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
66 | # define IS_PADCONST(v) 0 |
29 | # endif |
67 | # endif |
30 | #endif |
68 | #endif |
31 | |
69 | |
32 | #include <stdio.h> |
70 | /* 5.8.7 */ |
33 | #include <errno.h> |
71 | #ifndef SvRV_set |
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72 | # define SvRV_set(s,v) SvRV(s) = (v) |
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73 | #endif |
34 | |
74 | |
35 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
75 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
36 | # undef STACKGUARD |
76 | # undef STACKGUARD |
37 | #endif |
77 | #endif |
38 | |
78 | |
39 | #ifndef STACKGUARD |
79 | #ifndef STACKGUARD |
40 | # define STACKGUARD 0 |
80 | # define STACKGUARD 0 |
41 | #endif |
81 | #endif |
42 | |
82 | |
43 | #ifdef HAVE_MMAP |
83 | /* prefer perl internal functions over our own? */ |
44 | # include <unistd.h> |
84 | #ifndef PREFER_PERL_FUNCTIONS |
45 | # include <sys/mman.h> |
85 | # define PREFER_PERL_FUNCTIONS 0 |
46 | # ifndef MAP_ANONYMOUS |
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47 | # ifdef MAP_ANON |
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48 | # define MAP_ANONYMOUS MAP_ANON |
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49 | # else |
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50 | # undef HAVE_MMAP |
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51 | # endif |
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52 | # endif |
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53 | # include <limits.h> |
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54 | # ifndef PAGESIZE |
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55 | # define PAGESIZE pagesize |
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56 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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57 | static long pagesize; |
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58 | # else |
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59 | # define BOOT_PAGESIZE |
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60 | # endif |
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61 | #endif |
86 | #endif |
62 | |
87 | |
63 | /* The next macro should declare a variable stacklevel that contains and approximation |
88 | /* The next macro should declare a variable stacklevel that contains and approximation |
64 | * to the current C stack pointer. Its property is that it changes with each call |
89 | * to the current C stack pointer. Its property is that it changes with each call |
65 | * and should be unique. */ |
90 | * and should be unique. */ |
66 | #define dSTACKLEVEL int stacklevel |
91 | #define dSTACKLEVEL int stacklevel |
67 | #define STACKLEVEL ((void *)&stacklevel) |
92 | #define STACKLEVEL ((void *)&stacklevel) |
68 | |
93 | |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
94 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
70 | |
95 | |
71 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
96 | #if __GNUC__ >= 3 |
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97 | # define attribute(x) __attribute__(x) |
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98 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
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99 | #else |
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100 | # define attribute(x) |
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101 | # define BARRIER |
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102 | #endif |
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103 | |
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104 | #define NOINLINE attribute ((noinline)) |
72 | |
105 | |
73 | #include "CoroAPI.h" |
106 | #include "CoroAPI.h" |
74 | |
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75 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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76 | |
107 | |
77 | #ifdef USE_ITHREADS |
108 | #ifdef USE_ITHREADS |
78 | static perl_mutex coro_mutex; |
109 | static perl_mutex coro_mutex; |
79 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
110 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
80 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
111 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
81 | #else |
112 | #else |
82 | # define LOCK (void)0 |
113 | # define LOCK (void)0 |
83 | # define UNLOCK (void)0 |
114 | # define UNLOCK (void)0 |
84 | #endif |
115 | #endif |
85 | |
116 | |
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117 | /* helper storage struct for Coro::AIO */ |
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118 | struct io_state |
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119 | { |
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120 | int errorno; |
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121 | I32 laststype; |
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122 | int laststatval; |
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123 | Stat_t statcache; |
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124 | }; |
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125 | |
86 | static struct CoroAPI coroapi; |
126 | static struct CoroAPI coroapi; |
87 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
127 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
88 | static HV *coro_state_stash, *coro_stash; |
128 | static HV *coro_state_stash, *coro_stash; |
89 | static SV *coro_mortal; /* will be freed after next transfer */ |
129 | static SV *coro_mortal; /* will be freed after next transfer */ |
90 | |
130 | |
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131 | static struct coro_cctx *cctx_first; |
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132 | static int cctx_count, cctx_idle; |
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133 | |
91 | /* this is a structure representing a c-level coroutine */ |
134 | /* this is a structure representing a c-level coroutine */ |
92 | typedef struct coro_stack { |
135 | typedef struct coro_cctx { |
93 | struct coro_stack *next; |
136 | struct coro_cctx *next; |
94 | |
137 | |
95 | void *idle_sp; /* original stacklevel when coroutine was created */ |
138 | /* the stack */ |
96 | void *sptr; |
139 | void *sptr; |
97 | long ssize; /* positive == mmap, otherwise malloc */ |
140 | long ssize; /* positive == mmap, otherwise malloc */ |
98 | |
141 | |
99 | /* cpu state */ |
142 | /* cpu state */ |
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143 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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144 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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145 | JMPENV *top_env; |
100 | coro_context cctx; |
146 | coro_context cctx; |
101 | JMPENV *top_env; |
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102 | } coro_stack; |
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103 | |
147 | |
104 | /* the (fake) coro_stack representing the main program */ |
148 | int inuse; |
105 | static coro_stack *main_stack; |
149 | |
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150 | #if USE_VALGRIND |
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151 | int valgrind_id; |
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152 | #endif |
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153 | } coro_cctx; |
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154 | |
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155 | enum { |
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156 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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157 | CF_READY = 0x0002, /* coroutine is ready */ |
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158 | CF_NEW = 0x0004, /* has never been switched to */ |
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159 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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160 | }; |
106 | |
161 | |
107 | /* this is a structure representing a perl-level coroutine */ |
162 | /* this is a structure representing a perl-level coroutine */ |
108 | struct coro { |
163 | struct coro { |
109 | /* the c coroutine allocated to this perl coroutine, if any */ |
164 | /* the c coroutine allocated to this perl coroutine, if any */ |
110 | coro_stack *stack; |
165 | coro_cctx *cctx; |
111 | |
166 | |
112 | /* data associated with this coroutine (initial args) */ |
167 | /* data associated with this coroutine (initial args) */ |
113 | AV *args; |
168 | AV *args; |
114 | int refcnt; |
169 | int refcnt; |
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170 | int save; /* CORO_SAVE flags */ |
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171 | int flags; /* CF_ flags */ |
115 | |
172 | |
116 | /* optionally saved, might be zero */ |
173 | /* optionally saved, might be zero */ |
117 | AV *defav; |
174 | AV *defav; /* @_ */ |
118 | SV *defsv; |
175 | SV *defsv; /* $_ */ |
119 | SV *errsv; |
176 | SV *errsv; /* $@ */ |
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177 | SV *irssv; /* $/ */ |
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178 | SV *irssv_sv; /* real $/ cache */ |
120 | |
179 | |
121 | /* saved global state not related to stacks */ |
180 | #define VAR(name,type) type name; |
122 | U8 dowarn; |
181 | # include "state.h" |
123 | I32 in_eval; |
182 | #undef VAR |
124 | |
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125 | /* the stacks and related info (callchain etc..) */ |
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126 | PERL_SI *curstackinfo; |
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127 | AV *curstack; |
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128 | AV *mainstack; |
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129 | SV **stack_sp; |
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130 | OP *op; |
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131 | SV **curpad; |
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132 | AV *comppad; |
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133 | CV *compcv; |
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134 | SV **stack_base; |
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135 | SV **stack_max; |
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136 | SV **tmps_stack; |
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137 | I32 tmps_floor; |
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138 | I32 tmps_ix; |
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139 | I32 tmps_max; |
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140 | I32 *markstack; |
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141 | I32 *markstack_ptr; |
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142 | I32 *markstack_max; |
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143 | I32 *scopestack; |
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144 | I32 scopestack_ix; |
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145 | I32 scopestack_max; |
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146 | ANY *savestack; |
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147 | I32 savestack_ix; |
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148 | I32 savestack_max; |
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149 | OP **retstack; |
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150 | I32 retstack_ix; |
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151 | I32 retstack_max; |
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152 | PMOP *curpm; |
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153 | COP *curcop; |
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154 | |
183 | |
155 | /* coro process data */ |
184 | /* coro process data */ |
156 | int prio; |
185 | int prio; |
157 | }; |
186 | }; |
158 | |
187 | |
159 | typedef struct coro *Coro__State; |
188 | typedef struct coro *Coro__State; |
160 | typedef struct coro *Coro__State_or_hashref; |
189 | typedef struct coro *Coro__State_or_hashref; |
161 | |
190 | |
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191 | /** Coro ********************************************************************/ |
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192 | |
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193 | #define PRIO_MAX 3 |
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194 | #define PRIO_HIGH 1 |
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195 | #define PRIO_NORMAL 0 |
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196 | #define PRIO_LOW -1 |
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197 | #define PRIO_IDLE -3 |
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198 | #define PRIO_MIN -4 |
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199 | |
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200 | /* for Coro.pm */ |
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201 | static SV *coro_current; |
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202 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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203 | static int coro_nready; |
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204 | |
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205 | /** lowlevel stuff **********************************************************/ |
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206 | |
162 | static AV * |
207 | static AV * |
163 | coro_clone_padlist (pTHX_ CV *cv) |
208 | coro_clone_padlist (CV *cv) |
164 | { |
209 | { |
165 | AV *padlist = CvPADLIST (cv); |
210 | AV *padlist = CvPADLIST (cv); |
166 | AV *newpadlist, *newpad; |
211 | AV *newpadlist, *newpad; |
167 | |
212 | |
168 | newpadlist = newAV (); |
213 | newpadlist = newAV (); |
169 | AvREAL_off (newpadlist); |
214 | AvREAL_off (newpadlist); |
170 | #if PERL_VERSION < 9 |
215 | #if PERL_VERSION_ATLEAST (5,9,0) |
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216 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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217 | #else |
171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
218 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
172 | #else |
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173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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174 | #endif |
219 | #endif |
175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
220 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
176 | --AvFILLp (padlist); |
221 | --AvFILLp (padlist); |
177 | |
222 | |
178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
223 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
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180 | |
225 | |
181 | return newpadlist; |
226 | return newpadlist; |
182 | } |
227 | } |
183 | |
228 | |
184 | static void |
229 | static void |
185 | free_padlist (pTHX_ AV *padlist) |
230 | free_padlist (AV *padlist) |
186 | { |
231 | { |
187 | /* may be during global destruction */ |
232 | /* may be during global destruction */ |
188 | if (SvREFCNT (padlist)) |
233 | if (SvREFCNT (padlist)) |
189 | { |
234 | { |
190 | I32 i = AvFILLp (padlist); |
235 | I32 i = AvFILLp (padlist); |
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211 | AV *padlist; |
256 | AV *padlist; |
212 | AV *av = (AV *)mg->mg_obj; |
257 | AV *av = (AV *)mg->mg_obj; |
213 | |
258 | |
214 | /* casting is fun. */ |
259 | /* casting is fun. */ |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
260 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
216 | free_padlist (aTHX_ padlist); |
261 | free_padlist (padlist); |
217 | |
262 | |
218 | SvREFCNT_dec (av); |
263 | SvREFCNT_dec (av); |
219 | |
264 | |
220 | return 0; |
265 | return 0; |
221 | } |
266 | } |
222 | |
267 | |
223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
268 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
224 | |
269 | |
225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
270 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
226 | |
271 | |
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272 | #define CORO_MAGIC(cv) \ |
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273 | SvMAGIC (cv) \ |
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274 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
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275 | ? SvMAGIC (cv) \ |
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276 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
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277 | : 0 |
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278 | |
227 | /* the next two functions merely cache the padlists */ |
279 | /* the next two functions merely cache the padlists */ |
228 | static void |
280 | static void |
229 | get_padlist (pTHX_ CV *cv) |
281 | get_padlist (CV *cv) |
230 | { |
282 | { |
231 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
283 | MAGIC *mg = CORO_MAGIC (cv); |
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284 | AV *av; |
232 | |
285 | |
233 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
286 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
234 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
287 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
235 | else |
288 | else |
236 | { |
289 | { |
237 | #if 0 |
290 | #if PREFER_PERL_FUNCTIONS |
238 | /* this should work - but it doesn't :( */ |
291 | /* this is probably cleaner, but also slower? */ |
239 | CV *cp = Perl_cv_clone (aTHX_ cv); |
292 | CV *cp = Perl_cv_clone (cv); |
240 | CvPADLIST (cv) = CvPADLIST (cp); |
293 | CvPADLIST (cv) = CvPADLIST (cp); |
241 | CvPADLIST (cp) = 0; |
294 | CvPADLIST (cp) = 0; |
242 | SvREFCNT_dec (cp); |
295 | SvREFCNT_dec (cp); |
243 | #else |
296 | #else |
244 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
297 | CvPADLIST (cv) = coro_clone_padlist (cv); |
245 | #endif |
298 | #endif |
246 | } |
299 | } |
247 | } |
300 | } |
248 | |
301 | |
249 | static void |
302 | static void |
250 | put_padlist (pTHX_ CV *cv) |
303 | put_padlist (CV *cv) |
251 | { |
304 | { |
252 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
305 | MAGIC *mg = CORO_MAGIC (cv); |
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306 | AV *av; |
253 | |
307 | |
254 | if (!mg) |
308 | if (!mg) |
255 | { |
309 | { |
256 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
310 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
257 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
311 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
258 | mg->mg_virtual = &vtbl_coro; |
312 | mg->mg_virtual = &vtbl_coro; |
259 | mg->mg_obj = (SV *)newAV (); |
313 | mg->mg_obj = (SV *)newAV (); |
260 | } |
314 | } |
261 | |
315 | |
262 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
316 | av = (AV *)mg->mg_obj; |
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317 | |
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318 | if (AvFILLp (av) >= AvMAX (av)) |
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319 | av_extend (av, AvMAX (av) + 1); |
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320 | |
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321 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
263 | } |
322 | } |
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323 | |
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324 | /** load & save, init *******************************************************/ |
264 | |
325 | |
265 | #define SB do { |
326 | #define SB do { |
266 | #define SE } while (0) |
327 | #define SE } while (0) |
267 | |
328 | |
268 | #define LOAD(state) load_state(aTHX_ (state)); |
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269 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
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270 | |
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271 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
329 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE |
272 | |
330 | |
273 | static void |
331 | static void |
274 | load_state(pTHX_ Coro__State c) |
332 | load_perl (Coro__State c) |
275 | { |
333 | { |
276 | PL_dowarn = c->dowarn; |
334 | #define VAR(name,type) PL_ ## name = c->name; |
277 | PL_in_eval = c->in_eval; |
335 | # include "state.h" |
278 | |
336 | #undef VAR |
279 | PL_curstackinfo = c->curstackinfo; |
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280 | PL_curstack = c->curstack; |
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281 | PL_mainstack = c->mainstack; |
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282 | PL_stack_sp = c->stack_sp; |
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283 | PL_op = c->op; |
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284 | PL_curpad = c->curpad; |
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285 | PL_comppad = c->comppad; |
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286 | PL_compcv = c->compcv; |
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287 | PL_stack_base = c->stack_base; |
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288 | PL_stack_max = c->stack_max; |
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289 | PL_tmps_stack = c->tmps_stack; |
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|
290 | PL_tmps_floor = c->tmps_floor; |
|
|
291 | PL_tmps_ix = c->tmps_ix; |
|
|
292 | PL_tmps_max = c->tmps_max; |
|
|
293 | PL_markstack = c->markstack; |
|
|
294 | PL_markstack_ptr = c->markstack_ptr; |
|
|
295 | PL_markstack_max = c->markstack_max; |
|
|
296 | PL_scopestack = c->scopestack; |
|
|
297 | PL_scopestack_ix = c->scopestack_ix; |
|
|
298 | PL_scopestack_max = c->scopestack_max; |
|
|
299 | PL_savestack = c->savestack; |
|
|
300 | PL_savestack_ix = c->savestack_ix; |
|
|
301 | PL_savestack_max = c->savestack_max; |
|
|
302 | #if PERL_VERSION < 9 |
|
|
303 | PL_retstack = c->retstack; |
|
|
304 | PL_retstack_ix = c->retstack_ix; |
|
|
305 | PL_retstack_max = c->retstack_max; |
|
|
306 | #endif |
|
|
307 | PL_curpm = c->curpm; |
|
|
308 | PL_curcop = c->curcop; |
|
|
309 | |
337 | |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
338 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
339 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
340 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
341 | if (c->irssv) |
|
|
342 | { |
|
|
343 | if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv)) |
|
|
344 | SvREFCNT_dec (c->irssv); |
|
|
345 | else |
|
|
346 | { |
|
|
347 | REPLACE_SV (PL_rs, c->irssv); |
|
|
348 | if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0); |
|
|
349 | sv_setsv (c->irssv_sv, PL_rs); |
|
|
350 | } |
|
|
351 | } |
313 | |
352 | |
314 | { |
353 | { |
315 | dSP; |
354 | dSP; |
316 | CV *cv; |
355 | CV *cv; |
317 | |
356 | |
318 | /* now do the ugly restore mess */ |
357 | /* now do the ugly restore mess */ |
319 | while ((cv = (CV *)POPs)) |
358 | while ((cv = (CV *)POPs)) |
320 | { |
359 | { |
321 | AV *padlist = (AV *)POPs; |
|
|
322 | |
|
|
323 | if (padlist) |
|
|
324 | { |
|
|
325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
360 | put_padlist (cv); /* mark this padlist as available */ |
326 | CvPADLIST(cv) = padlist; |
361 | CvDEPTH (cv) = PTR2IV (POPs); |
327 | } |
362 | CvPADLIST (cv) = (AV *)POPs; |
328 | |
|
|
329 | ++CvDEPTH(cv); |
|
|
330 | } |
363 | } |
331 | |
364 | |
332 | PUTBACK; |
365 | PUTBACK; |
333 | } |
366 | } |
334 | } |
367 | } |
335 | |
368 | |
336 | static void |
369 | static void |
337 | save_state(pTHX_ Coro__State c, int flags) |
370 | save_perl (Coro__State c) |
338 | { |
371 | { |
339 | { |
372 | { |
340 | dSP; |
373 | dSP; |
341 | I32 cxix = cxstack_ix; |
374 | I32 cxix = cxstack_ix; |
342 | PERL_CONTEXT *ccstk = cxstack; |
375 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
345 | /* |
378 | /* |
346 | * the worst thing you can imagine happens first - we have to save |
379 | * the worst thing you can imagine happens first - we have to save |
347 | * (and reinitialize) all cv's in the whole callchain :( |
380 | * (and reinitialize) all cv's in the whole callchain :( |
348 | */ |
381 | */ |
349 | |
382 | |
|
|
383 | EXTEND (SP, 3 + 1); |
350 | PUSHs (Nullsv); |
384 | PUSHs (Nullsv); |
351 | /* this loop was inspired by pp_caller */ |
385 | /* this loop was inspired by pp_caller */ |
352 | for (;;) |
386 | for (;;) |
353 | { |
387 | { |
354 | while (cxix >= 0) |
388 | while (cxix >= 0) |
355 | { |
389 | { |
356 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
390 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
357 | |
391 | |
358 | if (CxTYPE(cx) == CXt_SUB) |
392 | if (CxTYPE (cx) == CXt_SUB) |
359 | { |
393 | { |
360 | CV *cv = cx->blk_sub.cv; |
394 | CV *cv = cx->blk_sub.cv; |
|
|
395 | |
361 | if (CvDEPTH(cv)) |
396 | if (CvDEPTH (cv)) |
362 | { |
397 | { |
363 | EXTEND (SP, CvDEPTH(cv)*2); |
398 | EXTEND (SP, 3); |
364 | |
|
|
365 | while (--CvDEPTH(cv)) |
|
|
366 | { |
|
|
367 | /* this tells the restore code to increment CvDEPTH */ |
|
|
368 | PUSHs (Nullsv); |
|
|
369 | PUSHs ((SV *)cv); |
|
|
370 | } |
|
|
371 | |
|
|
372 | PUSHs ((SV *)CvPADLIST(cv)); |
399 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
400 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
373 | PUSHs ((SV *)cv); |
401 | PUSHs ((SV *)cv); |
374 | |
402 | |
|
|
403 | CvDEPTH (cv) = 0; |
375 | get_padlist (aTHX_ cv); |
404 | get_padlist (cv); |
376 | } |
405 | } |
377 | } |
406 | } |
378 | #ifdef CXt_FORMAT |
|
|
379 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
380 | { |
|
|
381 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
382 | /* my bold guess is as a simple, plain sub... */ |
|
|
383 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | } |
407 | } |
387 | |
408 | |
388 | if (top_si->si_type == PERLSI_MAIN) |
409 | if (top_si->si_type == PERLSI_MAIN) |
389 | break; |
410 | break; |
390 | |
411 | |
… | |
… | |
394 | } |
415 | } |
395 | |
416 | |
396 | PUTBACK; |
417 | PUTBACK; |
397 | } |
418 | } |
398 | |
419 | |
399 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
420 | c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
400 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
421 | c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
401 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
422 | c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
423 | c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0; |
402 | |
424 | |
403 | c->dowarn = PL_dowarn; |
425 | #define VAR(name,type)c->name = PL_ ## name; |
404 | c->in_eval = PL_in_eval; |
426 | # include "state.h" |
405 | |
427 | #undef VAR |
406 | c->curstackinfo = PL_curstackinfo; |
|
|
407 | c->curstack = PL_curstack; |
|
|
408 | c->mainstack = PL_mainstack; |
|
|
409 | c->stack_sp = PL_stack_sp; |
|
|
410 | c->op = PL_op; |
|
|
411 | c->curpad = PL_curpad; |
|
|
412 | c->comppad = PL_comppad; |
|
|
413 | c->compcv = PL_compcv; |
|
|
414 | c->stack_base = PL_stack_base; |
|
|
415 | c->stack_max = PL_stack_max; |
|
|
416 | c->tmps_stack = PL_tmps_stack; |
|
|
417 | c->tmps_floor = PL_tmps_floor; |
|
|
418 | c->tmps_ix = PL_tmps_ix; |
|
|
419 | c->tmps_max = PL_tmps_max; |
|
|
420 | c->markstack = PL_markstack; |
|
|
421 | c->markstack_ptr = PL_markstack_ptr; |
|
|
422 | c->markstack_max = PL_markstack_max; |
|
|
423 | c->scopestack = PL_scopestack; |
|
|
424 | c->scopestack_ix = PL_scopestack_ix; |
|
|
425 | c->scopestack_max = PL_scopestack_max; |
|
|
426 | c->savestack = PL_savestack; |
|
|
427 | c->savestack_ix = PL_savestack_ix; |
|
|
428 | c->savestack_max = PL_savestack_max; |
|
|
429 | #if PERL_VERSION < 9 |
|
|
430 | c->retstack = PL_retstack; |
|
|
431 | c->retstack_ix = PL_retstack_ix; |
|
|
432 | c->retstack_max = PL_retstack_max; |
|
|
433 | #endif |
|
|
434 | c->curpm = PL_curpm; |
|
|
435 | c->curcop = PL_curcop; |
|
|
436 | } |
428 | } |
437 | |
429 | |
438 | /* |
430 | /* |
439 | * allocate various perl stacks. This is an exact copy |
431 | * allocate various perl stacks. This is an exact copy |
440 | * of perl.c:init_stacks, except that it uses less memory |
432 | * of perl.c:init_stacks, except that it uses less memory |
441 | * on the (sometimes correct) assumption that coroutines do |
433 | * on the (sometimes correct) assumption that coroutines do |
442 | * not usually need a lot of stackspace. |
434 | * not usually need a lot of stackspace. |
443 | */ |
435 | */ |
|
|
436 | #if PREFER_PERL_FUNCTIONS |
|
|
437 | # define coro_init_stacks init_stacks |
|
|
438 | #else |
444 | static void |
439 | static void |
445 | coro_init_stacks (pTHX) |
440 | coro_init_stacks () |
446 | { |
441 | { |
447 | LOCK; |
|
|
448 | |
|
|
449 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
442 | PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT)); |
450 | PL_curstackinfo->si_type = PERLSI_MAIN; |
443 | PL_curstackinfo->si_type = PERLSI_MAIN; |
451 | PL_curstack = PL_curstackinfo->si_stack; |
444 | PL_curstack = PL_curstackinfo->si_stack; |
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
445 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
453 | |
446 | |
454 | PL_stack_base = AvARRAY(PL_curstack); |
447 | PL_stack_base = AvARRAY(PL_curstack); |
455 | PL_stack_sp = PL_stack_base; |
448 | PL_stack_sp = PL_stack_base; |
456 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
449 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
457 | |
450 | |
458 | New(50,PL_tmps_stack,96,SV*); |
451 | New(50,PL_tmps_stack,128,SV*); |
459 | PL_tmps_floor = -1; |
452 | PL_tmps_floor = -1; |
460 | PL_tmps_ix = -1; |
453 | PL_tmps_ix = -1; |
461 | PL_tmps_max = 96; |
454 | PL_tmps_max = 128; |
462 | |
455 | |
463 | New(54,PL_markstack,16,I32); |
456 | New(54,PL_markstack,32,I32); |
464 | PL_markstack_ptr = PL_markstack; |
457 | PL_markstack_ptr = PL_markstack; |
465 | PL_markstack_max = PL_markstack + 16; |
458 | PL_markstack_max = PL_markstack + 32; |
466 | |
459 | |
467 | #ifdef SET_MARK_OFFSET |
460 | #ifdef SET_MARK_OFFSET |
468 | SET_MARK_OFFSET; |
461 | SET_MARK_OFFSET; |
469 | #endif |
462 | #endif |
470 | |
463 | |
471 | New(54,PL_scopestack,16,I32); |
464 | New(54,PL_scopestack,32,I32); |
472 | PL_scopestack_ix = 0; |
465 | PL_scopestack_ix = 0; |
473 | PL_scopestack_max = 16; |
466 | PL_scopestack_max = 32; |
474 | |
467 | |
475 | New(54,PL_savestack,96,ANY); |
468 | New(54,PL_savestack,64,ANY); |
476 | PL_savestack_ix = 0; |
469 | PL_savestack_ix = 0; |
477 | PL_savestack_max = 96; |
470 | PL_savestack_max = 64; |
478 | |
471 | |
479 | #if PERL_VERSION < 9 |
472 | #if !PERL_VERSION_ATLEAST (5,9,0) |
480 | New(54,PL_retstack,8,OP*); |
473 | New(54,PL_retstack,16,OP*); |
481 | PL_retstack_ix = 0; |
474 | PL_retstack_ix = 0; |
482 | PL_retstack_max = 8; |
475 | PL_retstack_max = 16; |
483 | #endif |
476 | #endif |
484 | |
|
|
485 | UNLOCK; |
|
|
486 | } |
477 | } |
|
|
478 | #endif |
487 | |
479 | |
488 | /* |
480 | /* |
489 | * destroy the stacks, the callchain etc... |
481 | * destroy the stacks, the callchain etc... |
490 | */ |
482 | */ |
491 | static void |
483 | static void |
492 | destroy_stacks(pTHX) |
484 | coro_destroy_stacks () |
493 | { |
485 | { |
494 | if (!IN_DESTRUCT) |
486 | if (!IN_DESTRUCT) |
495 | { |
487 | { |
496 | /* is this ugly, I ask? */ |
488 | /* restore all saved variables and stuff */ |
497 | LEAVE_SCOPE (0); |
489 | LEAVE_SCOPE (0); |
|
|
490 | assert (PL_tmps_floor == -1); |
498 | |
491 | |
499 | /* sure it is, but more important: is it correct?? :/ */ |
492 | /* free all temporaries */ |
500 | FREETMPS; |
493 | FREETMPS; |
|
|
494 | assert (PL_tmps_ix == -1); |
501 | |
495 | |
|
|
496 | /* unwind all extra stacks */ |
502 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
497 | POPSTACK_TO (PL_mainstack); |
|
|
498 | |
|
|
499 | /* unwind main stack */ |
|
|
500 | dounwind (-1); |
503 | } |
501 | } |
504 | |
502 | |
505 | while (PL_curstackinfo->si_next) |
503 | while (PL_curstackinfo->si_next) |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
504 | PL_curstackinfo = PL_curstackinfo->si_next; |
507 | |
505 | |
508 | while (PL_curstackinfo) |
506 | while (PL_curstackinfo) |
509 | { |
507 | { |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
508 | PERL_SI *p = PL_curstackinfo->si_prev; |
511 | |
509 | |
512 | { /*D*//*remove*/ |
|
|
513 | dSP; |
|
|
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
515 | PUTBACK; /* possibly superfluous */ |
|
|
516 | } |
|
|
517 | |
|
|
518 | if (!IN_DESTRUCT) |
510 | if (!IN_DESTRUCT) |
519 | { |
|
|
520 | dounwind (-1);/*D*//*remove*/ |
|
|
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
511 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
522 | } |
|
|
523 | |
512 | |
524 | Safefree (PL_curstackinfo->si_cxstack); |
513 | Safefree (PL_curstackinfo->si_cxstack); |
525 | Safefree (PL_curstackinfo); |
514 | Safefree (PL_curstackinfo); |
526 | PL_curstackinfo = p; |
515 | PL_curstackinfo = p; |
527 | } |
516 | } |
528 | |
517 | |
529 | Safefree (PL_tmps_stack); |
518 | Safefree (PL_tmps_stack); |
530 | Safefree (PL_markstack); |
519 | Safefree (PL_markstack); |
531 | Safefree (PL_scopestack); |
520 | Safefree (PL_scopestack); |
532 | Safefree (PL_savestack); |
521 | Safefree (PL_savestack); |
533 | #if PERL_VERSION < 9 |
522 | #if !PERL_VERSION_ATLEAST (5,9,0) |
534 | Safefree (PL_retstack); |
523 | Safefree (PL_retstack); |
535 | #endif |
524 | #endif |
536 | } |
525 | } |
|
|
526 | |
|
|
527 | /** coroutine stack handling ************************************************/ |
537 | |
528 | |
538 | static void |
529 | static void |
539 | setup_coro (struct coro *coro) |
530 | setup_coro (struct coro *coro) |
540 | { |
531 | { |
541 | /* |
532 | /* |
542 | * emulate part of the perl startup here. |
533 | * emulate part of the perl startup here. |
543 | */ |
534 | */ |
544 | dTHX; |
535 | |
|
|
536 | coro_init_stacks (); |
|
|
537 | |
|
|
538 | PL_curcop = &PL_compiling; |
|
|
539 | PL_in_eval = EVAL_NULL; |
|
|
540 | PL_curpm = 0; |
|
|
541 | PL_localizing = 0; |
|
|
542 | PL_dirty = 0; |
|
|
543 | PL_restartop = 0; |
|
|
544 | |
|
|
545 | { |
|
|
546 | dSP; |
|
|
547 | LOGOP myop; |
|
|
548 | |
|
|
549 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
550 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
551 | |
|
|
552 | Zero (&myop, 1, LOGOP); |
|
|
553 | myop.op_next = Nullop; |
|
|
554 | myop.op_flags = OPf_WANT_VOID; |
|
|
555 | |
|
|
556 | PUSHMARK (SP); |
|
|
557 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
558 | PUTBACK; |
|
|
559 | PL_op = (OP *)&myop; |
|
|
560 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
561 | SPAGAIN; |
|
|
562 | } |
|
|
563 | |
|
|
564 | ENTER; /* necessary e.g. for dounwind */ |
|
|
565 | } |
|
|
566 | |
|
|
567 | static void |
|
|
568 | free_coro_mortal () |
|
|
569 | { |
|
|
570 | if (coro_mortal) |
|
|
571 | { |
|
|
572 | SvREFCNT_dec (coro_mortal); |
|
|
573 | coro_mortal = 0; |
|
|
574 | } |
|
|
575 | } |
|
|
576 | |
|
|
577 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
578 | static void NOINLINE |
|
|
579 | prepare_cctx (coro_cctx *cctx) |
|
|
580 | { |
545 | dSP; |
581 | dSP; |
546 | UNOP myop; |
582 | LOGOP myop; |
547 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
|
|
548 | |
583 | |
549 | coro_init_stacks (aTHX); |
|
|
550 | /*PL_curcop = 0;*/ |
|
|
551 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
552 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
553 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
554 | |
|
|
555 | SPAGAIN; |
|
|
556 | |
|
|
557 | Zero (&myop, 1, UNOP); |
584 | Zero (&myop, 1, LOGOP); |
558 | myop.op_next = Nullop; |
585 | myop.op_next = PL_op; |
559 | myop.op_flags = OPf_WANT_VOID; |
586 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
560 | |
587 | |
|
|
588 | PUSHMARK (SP); |
|
|
589 | EXTEND (SP, 2); |
|
|
590 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
|
|
591 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
592 | PUTBACK; |
561 | PL_op = (OP *)&myop; |
593 | PL_op = (OP *)&myop; |
562 | |
|
|
563 | PUSHMARK(SP); |
|
|
564 | XPUSHs (sub_init); |
|
|
565 | PUTBACK; |
|
|
566 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
594 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
567 | SPAGAIN; |
595 | SPAGAIN; |
568 | |
|
|
569 | ENTER; /* necessary e.g. for dounwind */ |
|
|
570 | } |
|
|
571 | |
|
|
572 | static void |
|
|
573 | free_coro_mortal () |
|
|
574 | { |
|
|
575 | if (coro_mortal) |
|
|
576 | { |
|
|
577 | SvREFCNT_dec (coro_mortal); |
|
|
578 | coro_mortal = 0; |
|
|
579 | } |
|
|
580 | } |
596 | } |
581 | |
597 | |
582 | static void |
598 | static void |
583 | coro_run (void *arg) |
599 | coro_run (void *arg) |
584 | { |
600 | { |
|
|
601 | /* coro_run is the alternative tail of transfer(), so unlock here. */ |
|
|
602 | UNLOCK; |
|
|
603 | |
585 | /* |
604 | /* |
586 | * this is a _very_ stripped down perl interpreter ;) |
605 | * this is a _very_ stripped down perl interpreter ;) |
587 | */ |
606 | */ |
588 | dTHX; |
|
|
589 | PL_top_env = &PL_start_env; |
607 | PL_top_env = &PL_start_env; |
590 | |
608 | |
591 | UNLOCK; |
609 | /* inject call to cctx_init */ |
|
|
610 | prepare_cctx ((coro_cctx *)arg); |
592 | |
611 | |
593 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
|
|
594 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
|
|
595 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
596 | |
|
|
597 | /* somebody will hit me for both perl_run and PL_restart_op */ |
612 | /* somebody will hit me for both perl_run and PL_restartop */ |
598 | perl_run (aTHX_ PERL_GET_CONTEXT); |
613 | PL_restartop = PL_op; |
|
|
614 | perl_run (PL_curinterp); |
599 | |
615 | |
|
|
616 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
600 | abort (); |
617 | abort (); |
601 | } |
618 | } |
602 | |
619 | |
603 | static coro_stack * |
620 | static coro_cctx * |
604 | stack_new () |
621 | cctx_new () |
605 | { |
622 | { |
606 | coro_stack *stack; |
623 | coro_cctx *cctx; |
607 | |
624 | |
|
|
625 | ++cctx_count; |
|
|
626 | |
608 | New (0, stack, 1, coro_stack); |
627 | Newz (0, cctx, 1, coro_cctx); |
609 | |
628 | |
610 | #if HAVE_MMAP |
629 | #if HAVE_MMAP |
611 | |
630 | |
612 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
631 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
632 | /* mmap supposedly does allocate-on-write for us */ |
613 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
633 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
614 | |
634 | |
615 | if (stack->sptr == (void *)-1) |
635 | if (cctx->sptr == (void *)-1) |
616 | { |
636 | { |
617 | perror ("FATAL: unable to mmap stack for coroutine"); |
637 | perror ("FATAL: unable to mmap stack for coroutine"); |
618 | _exit (EXIT_FAILURE); |
638 | _exit (EXIT_FAILURE); |
619 | } |
639 | } |
620 | |
640 | |
|
|
641 | # if STACKGUARD |
621 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
642 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
643 | # endif |
622 | |
644 | |
623 | #else |
645 | #else |
624 | |
646 | |
625 | stack->ssize = STACKSIZE * (long)sizeof (long); |
647 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
626 | New (0, stack->sptr, STACKSIZE, long); |
648 | New (0, cctx->sptr, STACKSIZE, long); |
627 | |
649 | |
628 | if (!stack->sptr) |
650 | if (!cctx->sptr) |
629 | { |
651 | { |
630 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
652 | perror ("FATAL: unable to malloc stack for coroutine"); |
631 | _exit (EXIT_FAILURE); |
653 | _exit (EXIT_FAILURE); |
632 | } |
654 | } |
633 | |
655 | |
634 | #endif |
656 | #endif |
635 | |
657 | |
|
|
658 | #if USE_VALGRIND |
|
|
659 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
|
|
660 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
661 | cctx->ssize + (char *)cctx->sptr |
|
|
662 | ); |
|
|
663 | #endif |
|
|
664 | |
636 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
665 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
637 | |
666 | |
638 | return stack; |
667 | return cctx; |
639 | } |
668 | } |
640 | |
669 | |
641 | static void |
670 | static void |
642 | stack_free (coro_stack *stack) |
671 | cctx_destroy (coro_cctx *cctx) |
643 | { |
672 | { |
644 | if (!stack || stack == main_stack) |
673 | if (!cctx) |
645 | return; |
674 | return; |
646 | |
675 | |
|
|
676 | --cctx_count; |
|
|
677 | |
|
|
678 | #if USE_VALGRIND |
|
|
679 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
680 | #endif |
|
|
681 | |
647 | #if HAVE_MMAP |
682 | #if HAVE_MMAP |
648 | munmap (stack->sptr, stack->ssize); |
683 | munmap (cctx->sptr, cctx->ssize); |
649 | #else |
684 | #else |
650 | Safefree (stack->sptr); |
685 | Safefree (cctx->sptr); |
651 | #endif |
686 | #endif |
652 | |
687 | |
653 | Safefree (stack); |
688 | Safefree (cctx); |
654 | } |
689 | } |
655 | |
690 | |
656 | static coro_stack *stack_first; |
|
|
657 | |
|
|
658 | static coro_stack * |
691 | static coro_cctx * |
659 | stack_get () |
692 | cctx_get () |
660 | { |
693 | { |
661 | coro_stack *stack; |
694 | coro_cctx *cctx; |
662 | |
695 | |
663 | if (stack_first) |
696 | if (cctx_first) |
664 | { |
697 | { |
665 | stack = stack_first; |
698 | cctx = cctx_first; |
666 | stack_first = stack->next; |
699 | cctx_first = cctx->next; |
|
|
700 | --cctx_idle; |
667 | } |
701 | } |
668 | else |
702 | else |
669 | { |
703 | { |
670 | stack = stack_new (); |
704 | cctx = cctx_new (); |
671 | PL_op = PL_op->op_next; |
705 | PL_op = PL_op->op_next; |
672 | } |
706 | } |
673 | |
707 | |
674 | return stack; |
708 | return cctx; |
675 | } |
709 | } |
676 | |
710 | |
677 | static void |
711 | static void |
678 | stack_put (coro_stack *stack) |
712 | cctx_put (coro_cctx *cctx) |
679 | { |
713 | { |
680 | stack->next = stack_first; |
714 | /* free another cctx if overlimit */ |
681 | stack_first = stack; |
715 | if (cctx_idle >= MAX_IDLE_CCTX) |
|
|
716 | { |
|
|
717 | coro_cctx *first = cctx_first; |
|
|
718 | cctx_first = first->next; |
|
|
719 | --cctx_idle; |
|
|
720 | |
|
|
721 | assert (!first->inuse); |
|
|
722 | cctx_destroy (first); |
|
|
723 | } |
|
|
724 | |
|
|
725 | ++cctx_idle; |
|
|
726 | cctx->next = cctx_first; |
|
|
727 | cctx_first = cctx; |
682 | } |
728 | } |
|
|
729 | |
|
|
730 | /** coroutine switching *****************************************************/ |
683 | |
731 | |
684 | /* never call directly, always through the coro_state_transfer global variable */ |
732 | /* never call directly, always through the coro_state_transfer global variable */ |
685 | static void |
733 | static void NOINLINE |
686 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
734 | transfer (struct coro *prev, struct coro *next) |
687 | { |
735 | { |
688 | dSTACKLEVEL; |
736 | dSTACKLEVEL; |
689 | |
737 | |
690 | /* sometimes transfer is only called to set idle_sp */ |
738 | /* sometimes transfer is only called to set idle_sp */ |
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
739 | if (!next) |
|
|
740 | { |
692 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
741 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
742 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
743 | } |
693 | else if (prev != next) |
744 | else if (prev != next) |
694 | { |
745 | { |
695 | coro_stack *prev__stack; |
746 | coro_cctx *prev__cctx; |
|
|
747 | |
|
|
748 | if (prev->flags & CF_NEW) |
|
|
749 | { |
|
|
750 | /* create a new empty context */ |
|
|
751 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
752 | prev->cctx->inuse = 1; |
|
|
753 | prev->flags &= ~CF_NEW; |
|
|
754 | prev->flags |= CF_RUNNING; |
|
|
755 | } |
|
|
756 | |
|
|
757 | /*TODO: must not croak here */ |
|
|
758 | if (!prev->flags & CF_RUNNING) |
|
|
759 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
760 | |
|
|
761 | if (next->flags & CF_RUNNING) |
|
|
762 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
763 | |
|
|
764 | if (next->flags & CF_DESTROYED) |
|
|
765 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
766 | |
|
|
767 | prev->flags &= ~CF_RUNNING; |
|
|
768 | next->flags |= CF_RUNNING; |
696 | |
769 | |
697 | LOCK; |
770 | LOCK; |
698 | |
771 | |
699 | if (next->mainstack) |
772 | if (next->flags & CF_NEW) |
700 | { |
773 | { |
701 | /* coroutine already started */ |
774 | /* need to start coroutine */ |
702 | SAVE (prev, flags); |
775 | next->flags &= ~CF_NEW; |
703 | LOAD (next); |
776 | /* first get rid of the old state */ |
|
|
777 | save_perl (prev); |
|
|
778 | /* setup coroutine call */ |
|
|
779 | setup_coro (next); |
|
|
780 | /* need a new stack */ |
|
|
781 | assert (!next->cctx); |
704 | } |
782 | } |
705 | else |
783 | else |
706 | { |
784 | { |
707 | /* need to start coroutine */ |
785 | /* coroutine already started */ |
708 | /* first get rid of the old state */ |
786 | save_perl (prev); |
709 | SAVE (prev, -1); |
787 | load_perl (next); |
710 | /* setup coroutine call */ |
|
|
711 | setup_coro (next); |
|
|
712 | /* need a stack */ |
|
|
713 | next->stack = 0; |
|
|
714 | } |
788 | } |
715 | |
789 | |
716 | prev__stack = prev->stack; |
790 | prev__cctx = prev->cctx; |
717 | |
791 | |
718 | /* possibly "free" the stack */ |
792 | /* possibly "free" the cctx */ |
719 | if (prev__stack->idle_sp == STACKLEVEL) |
793 | if (prev__cctx->idle_sp == STACKLEVEL) |
720 | { |
794 | { |
721 | stack_put (prev__stack); |
795 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
796 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
797 | |
722 | prev->stack = 0; |
798 | prev->cctx = 0; |
|
|
799 | |
|
|
800 | cctx_put (prev__cctx); |
|
|
801 | prev__cctx->inuse = 0; |
723 | } |
802 | } |
724 | |
803 | |
725 | if (!next->stack) |
804 | if (!next->cctx) |
726 | next->stack = stack_get (); |
|
|
727 | |
|
|
728 | if (prev__stack != next->stack) |
|
|
729 | { |
805 | { |
730 | prev__stack->top_env = PL_top_env; |
806 | next->cctx = cctx_get (); |
731 | PL_top_env = next->stack->top_env; |
807 | assert (!next->cctx->inuse); |
732 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
808 | next->cctx->inuse = 1; |
733 | } |
809 | } |
734 | |
810 | |
|
|
811 | if (prev__cctx != next->cctx) |
|
|
812 | { |
|
|
813 | prev__cctx->top_env = PL_top_env; |
|
|
814 | PL_top_env = next->cctx->top_env; |
|
|
815 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
816 | } |
|
|
817 | |
735 | free_coro_mortal (); |
818 | free_coro_mortal (); |
736 | |
|
|
737 | UNLOCK; |
819 | UNLOCK; |
738 | } |
820 | } |
739 | } |
821 | } |
740 | |
822 | |
741 | /* use this function pointer to call the above function */ |
|
|
742 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
743 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
744 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
745 | |
|
|
746 | struct transfer_args |
823 | struct transfer_args |
747 | { |
824 | { |
748 | struct coro *prev, *next; |
825 | struct coro *prev, *next; |
749 | int flags; |
|
|
750 | }; |
826 | }; |
751 | |
827 | |
752 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
828 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next) |
753 | |
829 | |
|
|
830 | /** high level stuff ********************************************************/ |
|
|
831 | |
754 | static void |
832 | static int |
755 | coro_state_destroy (struct coro *coro) |
833 | coro_state_destroy (struct coro *coro) |
756 | { |
834 | { |
757 | if (coro->refcnt--) |
835 | if (coro->flags & CF_DESTROYED) |
758 | return; |
836 | return 0; |
|
|
837 | |
|
|
838 | coro->flags |= CF_DESTROYED; |
|
|
839 | |
|
|
840 | if (coro->flags & CF_READY) |
|
|
841 | { |
|
|
842 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
843 | /* alternative: look through all ready queues and remove the coro */ |
|
|
844 | LOCK; |
|
|
845 | --coro_nready; |
|
|
846 | UNLOCK; |
|
|
847 | } |
|
|
848 | else |
|
|
849 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
759 | |
850 | |
760 | if (coro->mainstack && coro->mainstack != main_mainstack) |
851 | if (coro->mainstack && coro->mainstack != main_mainstack) |
761 | { |
852 | { |
762 | struct coro temp; |
853 | struct coro temp; |
763 | |
854 | |
764 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
855 | assert (!(coro->flags & CF_RUNNING)); |
765 | LOAD (aTHX_ coro); |
|
|
766 | |
856 | |
|
|
857 | Zero (&temp, 1, struct coro); |
|
|
858 | temp.save = CORO_SAVE_ALL; |
|
|
859 | |
|
|
860 | if (coro->flags & CF_RUNNING) |
|
|
861 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
862 | |
|
|
863 | save_perl (&temp); |
|
|
864 | load_perl (coro); |
|
|
865 | |
767 | destroy_stacks (aTHX); |
866 | coro_destroy_stacks (); |
768 | |
867 | |
769 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
868 | load_perl (&temp); /* this will get rid of defsv etc.. */ |
770 | |
869 | |
771 | coro->mainstack = 0; |
870 | coro->mainstack = 0; |
772 | } |
871 | } |
773 | |
872 | |
774 | stack_free (coro->stack); |
873 | cctx_destroy (coro->cctx); |
775 | SvREFCNT_dec (coro->args); |
874 | SvREFCNT_dec (coro->args); |
776 | Safefree (coro); |
875 | |
|
|
876 | return 1; |
777 | } |
877 | } |
778 | |
878 | |
779 | static int |
879 | static int |
780 | coro_state_clear (SV *sv, MAGIC *mg) |
880 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
781 | { |
881 | { |
782 | struct coro *coro = (struct coro *)mg->mg_ptr; |
882 | struct coro *coro = (struct coro *)mg->mg_ptr; |
783 | mg->mg_ptr = 0; |
883 | mg->mg_ptr = 0; |
784 | |
884 | |
|
|
885 | if (--coro->refcnt < 0) |
|
|
886 | { |
785 | coro_state_destroy (coro); |
887 | coro_state_destroy (coro); |
|
|
888 | Safefree (coro); |
|
|
889 | } |
786 | |
890 | |
787 | return 0; |
891 | return 0; |
788 | } |
892 | } |
789 | |
893 | |
790 | static int |
894 | static int |
791 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
895 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
792 | { |
896 | { |
793 | struct coro *coro = (struct coro *)mg->mg_ptr; |
897 | struct coro *coro = (struct coro *)mg->mg_ptr; |
794 | |
898 | |
795 | ++coro->refcnt; |
899 | ++coro->refcnt; |
796 | |
900 | |
797 | return 0; |
901 | return 0; |
798 | } |
902 | } |
799 | |
903 | |
800 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
904 | static MGVTBL coro_state_vtbl = { |
|
|
905 | 0, 0, 0, 0, |
|
|
906 | coro_state_free, |
|
|
907 | 0, |
|
|
908 | #ifdef MGf_DUP |
|
|
909 | coro_state_dup, |
|
|
910 | #else |
|
|
911 | # define MGf_DUP 0 |
|
|
912 | #endif |
|
|
913 | }; |
801 | |
914 | |
802 | static struct coro * |
915 | static struct coro * |
803 | SvSTATE (SV *coro) |
916 | SvSTATE (SV *coro) |
804 | { |
917 | { |
805 | HV *stash; |
918 | HV *stash; |
… | |
… | |
820 | assert (mg->mg_type == PERL_MAGIC_ext); |
933 | assert (mg->mg_type == PERL_MAGIC_ext); |
821 | return (struct coro *)mg->mg_ptr; |
934 | return (struct coro *)mg->mg_ptr; |
822 | } |
935 | } |
823 | |
936 | |
824 | static void |
937 | static void |
825 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
938 | prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
826 | { |
939 | { |
827 | ta->prev = SvSTATE (prev); |
940 | ta->prev = SvSTATE (prev_sv); |
828 | ta->next = SvSTATE (next); |
941 | ta->next = SvSTATE (next_sv); |
829 | ta->flags = flags; |
|
|
830 | } |
942 | } |
831 | |
943 | |
832 | static void |
944 | static void |
833 | api_transfer (SV *prev, SV *next, int flags) |
945 | api_transfer (SV *prev_sv, SV *next_sv) |
834 | { |
946 | { |
835 | dTHX; |
|
|
836 | struct transfer_args ta; |
947 | struct transfer_args ta; |
837 | |
948 | |
838 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
949 | prepare_transfer (&ta, prev_sv, next_sv); |
839 | TRANSFER (ta); |
950 | TRANSFER (ta); |
840 | } |
951 | } |
841 | |
952 | |
|
|
953 | static int |
|
|
954 | api_save (SV *coro_sv, int new_save) |
|
|
955 | { |
|
|
956 | struct coro *coro = SvSTATE (coro_sv); |
|
|
957 | int old_save = coro->save; |
|
|
958 | |
|
|
959 | if (new_save >= 0) |
|
|
960 | coro->save = new_save; |
|
|
961 | |
|
|
962 | return old_save; |
|
|
963 | } |
|
|
964 | |
842 | /** Coro ********************************************************************/ |
965 | /** Coro ********************************************************************/ |
843 | |
966 | |
844 | #define PRIO_MAX 3 |
|
|
845 | #define PRIO_HIGH 1 |
|
|
846 | #define PRIO_NORMAL 0 |
|
|
847 | #define PRIO_LOW -1 |
|
|
848 | #define PRIO_IDLE -3 |
|
|
849 | #define PRIO_MIN -4 |
|
|
850 | |
|
|
851 | /* for Coro.pm */ |
|
|
852 | static GV *coro_current, *coro_idle; |
|
|
853 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
854 | static int coro_nready; |
|
|
855 | |
|
|
856 | static void |
967 | static void |
857 | coro_enq (pTHX_ SV *sv) |
968 | coro_enq (SV *coro_sv) |
858 | { |
969 | { |
859 | int prio; |
|
|
860 | |
|
|
861 | if (SvTYPE (sv) != SVt_PVHV) |
|
|
862 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
863 | |
|
|
864 | prio = SvSTATE (sv)->prio; |
|
|
865 | |
|
|
866 | av_push (coro_ready [prio - PRIO_MIN], sv); |
970 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
867 | coro_nready++; |
|
|
868 | } |
971 | } |
869 | |
972 | |
870 | static SV * |
973 | static SV * |
871 | coro_deq (pTHX_ int min_prio) |
974 | coro_deq (int min_prio) |
872 | { |
975 | { |
873 | int prio = PRIO_MAX - PRIO_MIN; |
976 | int prio = PRIO_MAX - PRIO_MIN; |
874 | |
977 | |
875 | min_prio -= PRIO_MIN; |
978 | min_prio -= PRIO_MIN; |
876 | if (min_prio < 0) |
979 | if (min_prio < 0) |
877 | min_prio = 0; |
980 | min_prio = 0; |
878 | |
981 | |
879 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
982 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
880 | if (AvFILLp (coro_ready [prio]) >= 0) |
983 | if (AvFILLp (coro_ready [prio]) >= 0) |
881 | { |
|
|
882 | coro_nready--; |
|
|
883 | return av_shift (coro_ready [prio]); |
984 | return av_shift (coro_ready [prio]); |
884 | } |
|
|
885 | |
985 | |
886 | return 0; |
986 | return 0; |
887 | } |
987 | } |
888 | |
988 | |
889 | static void |
989 | static int |
890 | api_ready (SV *coro) |
990 | api_ready (SV *coro_sv) |
891 | { |
991 | { |
892 | dTHX; |
992 | struct coro *coro; |
893 | |
993 | |
894 | if (SvROK (coro)) |
994 | if (SvROK (coro_sv)) |
895 | coro = SvRV (coro); |
995 | coro_sv = SvRV (coro_sv); |
|
|
996 | |
|
|
997 | coro = SvSTATE (coro_sv); |
|
|
998 | |
|
|
999 | if (coro->flags & CF_READY) |
|
|
1000 | return 0; |
|
|
1001 | |
|
|
1002 | coro->flags |= CF_READY; |
896 | |
1003 | |
897 | LOCK; |
1004 | LOCK; |
898 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
1005 | coro_enq (SvREFCNT_inc (coro_sv)); |
|
|
1006 | ++coro_nready; |
899 | UNLOCK; |
1007 | UNLOCK; |
900 | } |
|
|
901 | |
1008 | |
|
|
1009 | return 1; |
|
|
1010 | } |
|
|
1011 | |
902 | static void |
1012 | static int |
|
|
1013 | api_is_ready (SV *coro_sv) |
|
|
1014 | { |
|
|
1015 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | static void |
903 | prepare_schedule (aTHX_ struct transfer_args *ta) |
1019 | prepare_schedule (struct transfer_args *ta) |
904 | { |
1020 | { |
905 | SV *current, *prev, *next; |
1021 | SV *prev_sv, *next_sv; |
|
|
1022 | |
|
|
1023 | for (;;) |
|
|
1024 | { |
|
|
1025 | LOCK; |
|
|
1026 | next_sv = coro_deq (PRIO_MIN); |
|
|
1027 | |
|
|
1028 | /* nothing to schedule: call the idle handler */ |
|
|
1029 | if (!next_sv) |
|
|
1030 | { |
|
|
1031 | dSP; |
|
|
1032 | UNLOCK; |
|
|
1033 | |
|
|
1034 | ENTER; |
|
|
1035 | SAVETMPS; |
|
|
1036 | |
|
|
1037 | PUSHMARK (SP); |
|
|
1038 | PUTBACK; |
|
|
1039 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1040 | |
|
|
1041 | FREETMPS; |
|
|
1042 | LEAVE; |
|
|
1043 | continue; |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | ta->next = SvSTATE (next_sv); |
|
|
1047 | |
|
|
1048 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1049 | if (ta->next->flags & CF_DESTROYED) |
|
|
1050 | { |
|
|
1051 | UNLOCK; |
|
|
1052 | SvREFCNT_dec (next_sv); |
|
|
1053 | /* coro_nready is already taken care of by destroy */ |
|
|
1054 | continue; |
|
|
1055 | } |
|
|
1056 | |
|
|
1057 | --coro_nready; |
|
|
1058 | UNLOCK; |
|
|
1059 | break; |
|
|
1060 | } |
|
|
1061 | |
|
|
1062 | /* free this only after the transfer */ |
|
|
1063 | prev_sv = SvRV (coro_current); |
|
|
1064 | SvRV_set (coro_current, next_sv); |
|
|
1065 | ta->prev = SvSTATE (prev_sv); |
|
|
1066 | |
|
|
1067 | assert (ta->next->flags & CF_READY); |
|
|
1068 | ta->next->flags &= ~CF_READY; |
906 | |
1069 | |
907 | LOCK; |
1070 | LOCK; |
908 | |
|
|
909 | current = GvSV (coro_current); |
|
|
910 | |
|
|
911 | for (;;) |
|
|
912 | { |
|
|
913 | LOCK; |
|
|
914 | |
|
|
915 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
916 | |
|
|
917 | if (next) |
|
|
918 | break; |
|
|
919 | |
|
|
920 | UNLOCK; |
|
|
921 | |
|
|
922 | { |
|
|
923 | dSP; |
|
|
924 | |
|
|
925 | ENTER; |
|
|
926 | SAVETMPS; |
|
|
927 | |
|
|
928 | PUSHMARK (SP); |
|
|
929 | PUTBACK; |
|
|
930 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
931 | |
|
|
932 | FREETMPS; |
|
|
933 | LEAVE; |
|
|
934 | } |
|
|
935 | } |
|
|
936 | |
|
|
937 | prev = SvRV (current); |
|
|
938 | SvRV (current) = next; |
|
|
939 | |
|
|
940 | /* free this only after the transfer */ |
|
|
941 | free_coro_mortal (); |
1071 | free_coro_mortal (); |
942 | coro_mortal = prev; |
1072 | coro_mortal = prev_sv; |
943 | |
|
|
944 | ta->prev = SvSTATE (prev); |
|
|
945 | ta->next = SvSTATE (next); |
|
|
946 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
947 | |
|
|
948 | UNLOCK; |
1073 | UNLOCK; |
949 | } |
1074 | } |
950 | |
1075 | |
951 | static void |
1076 | static void |
952 | prepare_cede (aTHX_ struct transfer_args *ta) |
1077 | prepare_cede (struct transfer_args *ta) |
953 | { |
1078 | { |
954 | LOCK; |
1079 | api_ready (coro_current); |
955 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
956 | UNLOCK; |
|
|
957 | |
|
|
958 | prepare_schedule (ta); |
1080 | prepare_schedule (ta); |
959 | } |
1081 | } |
960 | |
1082 | |
|
|
1083 | static int |
|
|
1084 | prepare_cede_notself (struct transfer_args *ta) |
|
|
1085 | { |
|
|
1086 | if (coro_nready) |
|
|
1087 | { |
|
|
1088 | SV *prev = SvRV (coro_current); |
|
|
1089 | prepare_schedule (ta); |
|
|
1090 | api_ready (prev); |
|
|
1091 | return 1; |
|
|
1092 | } |
|
|
1093 | else |
|
|
1094 | return 0; |
|
|
1095 | } |
|
|
1096 | |
961 | static void |
1097 | static void |
962 | api_schedule (void) |
1098 | api_schedule (void) |
963 | { |
1099 | { |
964 | dTHX; |
|
|
965 | struct transfer_args ta; |
1100 | struct transfer_args ta; |
966 | |
1101 | |
967 | prepare_schedule (&ta); |
1102 | prepare_schedule (&ta); |
968 | TRANSFER (ta); |
1103 | TRANSFER (ta); |
969 | } |
1104 | } |
970 | |
1105 | |
971 | static void |
1106 | static int |
972 | api_cede (void) |
1107 | api_cede (void) |
973 | { |
1108 | { |
974 | dTHX; |
|
|
975 | struct transfer_args ta; |
1109 | struct transfer_args ta; |
976 | |
1110 | |
977 | prepare_cede (&ta); |
1111 | prepare_cede (&ta); |
|
|
1112 | |
|
|
1113 | if (ta.prev != ta.next) |
|
|
1114 | { |
978 | TRANSFER (ta); |
1115 | TRANSFER (ta); |
|
|
1116 | return 1; |
|
|
1117 | } |
|
|
1118 | else |
|
|
1119 | return 0; |
|
|
1120 | } |
|
|
1121 | |
|
|
1122 | static int |
|
|
1123 | api_cede_notself (void) |
|
|
1124 | { |
|
|
1125 | struct transfer_args ta; |
|
|
1126 | |
|
|
1127 | if (prepare_cede_notself (&ta)) |
|
|
1128 | { |
|
|
1129 | TRANSFER (ta); |
|
|
1130 | return 1; |
|
|
1131 | } |
|
|
1132 | else |
|
|
1133 | return 0; |
979 | } |
1134 | } |
980 | |
1135 | |
981 | MODULE = Coro::State PACKAGE = Coro::State |
1136 | MODULE = Coro::State PACKAGE = Coro::State |
982 | |
1137 | |
983 | PROTOTYPES: DISABLE |
1138 | PROTOTYPES: DISABLE |
… | |
… | |
989 | #endif |
1144 | #endif |
990 | BOOT_PAGESIZE; |
1145 | BOOT_PAGESIZE; |
991 | |
1146 | |
992 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1147 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
993 | |
1148 | |
994 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1149 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV)); |
995 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1150 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV)); |
996 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1151 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV)); |
|
|
1152 | newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV)); |
|
|
1153 | newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL)); |
997 | |
1154 | |
998 | main_mainstack = PL_mainstack; |
1155 | main_mainstack = PL_mainstack; |
999 | |
1156 | |
1000 | coroapi.ver = CORO_API_VERSION; |
1157 | coroapi.ver = CORO_API_VERSION; |
1001 | coroapi.transfer = api_transfer; |
1158 | coroapi.transfer = api_transfer; |
1002 | |
|
|
1003 | Newz (0, main_stack, 1, coro_stack); |
|
|
1004 | main_stack->idle_sp = (void *)-1; |
|
|
1005 | |
1159 | |
1006 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1160 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1007 | } |
1161 | } |
1008 | |
1162 | |
1009 | SV * |
1163 | SV * |
… | |
… | |
1014 | HV *hv; |
1168 | HV *hv; |
1015 | int i; |
1169 | int i; |
1016 | |
1170 | |
1017 | Newz (0, coro, 1, struct coro); |
1171 | Newz (0, coro, 1, struct coro); |
1018 | coro->args = newAV (); |
1172 | coro->args = newAV (); |
|
|
1173 | coro->save = CORO_SAVE_ALL; |
|
|
1174 | coro->flags = CF_NEW; |
1019 | |
1175 | |
1020 | hv = newHV (); |
1176 | hv = newHV (); |
1021 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1177 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
1022 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1178 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1023 | |
1179 | |
1024 | for (i = 1; i < items; i++) |
1180 | for (i = 1; i < items; i++) |
1025 | av_push (coro->args, newSVsv (ST (i))); |
1181 | av_push (coro->args, newSVsv (ST (i))); |
1026 | |
|
|
1027 | coro->stack = main_stack; |
|
|
1028 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
1029 | /*coro->stack = 0;*/ |
|
|
1030 | } |
1182 | } |
1031 | OUTPUT: |
1183 | OUTPUT: |
1032 | RETVAL |
1184 | RETVAL |
1033 | |
1185 | |
|
|
1186 | int |
|
|
1187 | save (SV *coro, int new_save = -1) |
|
|
1188 | CODE: |
|
|
1189 | RETVAL = api_save (coro, new_save); |
|
|
1190 | OUTPUT: |
|
|
1191 | RETVAL |
|
|
1192 | |
1034 | void |
1193 | void |
1035 | transfer (...) |
1194 | _set_stacklevel (...) |
1036 | ALIAS: |
1195 | ALIAS: |
1037 | Coro::schedule = 1 |
1196 | Coro::State::transfer = 1 |
1038 | Coro::cede = 2 |
1197 | Coro::schedule = 2 |
1039 | _set_stacklevel = 3 |
1198 | Coro::cede = 3 |
|
|
1199 | Coro::cede_notself = 4 |
1040 | CODE: |
1200 | CODE: |
1041 | { |
1201 | { |
1042 | struct transfer_args ta; |
1202 | struct transfer_args ta; |
1043 | |
1203 | |
1044 | switch (ix) |
1204 | switch (ix) |
1045 | { |
1205 | { |
1046 | case 0: |
1206 | case 0: |
1047 | if (items != 3) |
1207 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
1048 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
1208 | ta.next = 0; |
1049 | |
|
|
1050 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1051 | break; |
1209 | break; |
1052 | |
1210 | |
1053 | case 1: |
1211 | case 1: |
|
|
1212 | if (items != 2) |
|
|
1213 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
|
|
1214 | |
|
|
1215 | prepare_transfer (&ta, ST (0), ST (1)); |
|
|
1216 | break; |
|
|
1217 | |
|
|
1218 | case 2: |
1054 | prepare_schedule (&ta); |
1219 | prepare_schedule (&ta); |
1055 | break; |
1220 | break; |
1056 | |
1221 | |
1057 | case 2: |
1222 | case 3: |
1058 | prepare_cede (&ta); |
1223 | prepare_cede (&ta); |
1059 | break; |
1224 | break; |
1060 | |
1225 | |
1061 | case 3: |
1226 | case 4: |
1062 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
1227 | if (!prepare_cede_notself (&ta)) |
1063 | ta.next = 0; |
1228 | XSRETURN_EMPTY; |
1064 | ta.flags = TRANSFER_SET_STACKLEVEL; |
1229 | |
1065 | break; |
1230 | break; |
1066 | } |
1231 | } |
1067 | |
1232 | |
|
|
1233 | BARRIER; |
1068 | TRANSFER (ta); |
1234 | TRANSFER (ta); |
1069 | } |
|
|
1070 | |
1235 | |
1071 | void |
1236 | if (GIMME_V != G_VOID && ta.next != ta.prev) |
1072 | _clone_state_from (SV *dst, SV *src) |
1237 | XSRETURN_YES; |
|
|
1238 | } |
|
|
1239 | |
|
|
1240 | bool |
|
|
1241 | _destroy (SV *coro_sv) |
1073 | CODE: |
1242 | CODE: |
1074 | { |
1243 | RETVAL = coro_state_destroy (SvSTATE (coro_sv)); |
1075 | struct coro *coro_src = SvSTATE (src); |
1244 | OUTPUT: |
1076 | |
1245 | RETVAL |
1077 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1078 | |
|
|
1079 | ++coro_src->refcnt; |
|
|
1080 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | void |
|
|
1084 | _nonlocal_goto (IV nextop) |
|
|
1085 | CODE: |
|
|
1086 | /* uuh, somebody will kill me again for this */ |
|
|
1087 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1088 | |
1246 | |
1089 | void |
1247 | void |
1090 | _exit (code) |
1248 | _exit (code) |
1091 | int code |
1249 | int code |
1092 | PROTOTYPE: $ |
1250 | PROTOTYPE: $ |
1093 | CODE: |
1251 | CODE: |
1094 | _exit (code); |
1252 | _exit (code); |
1095 | |
1253 | |
1096 | MODULE = Coro::State PACKAGE = Coro::Cont |
1254 | int |
|
|
1255 | cctx_count () |
|
|
1256 | CODE: |
|
|
1257 | RETVAL = cctx_count; |
|
|
1258 | OUTPUT: |
|
|
1259 | RETVAL |
1097 | |
1260 | |
1098 | void |
1261 | int |
1099 | yield (...) |
1262 | cctx_idle () |
1100 | PROTOTYPE: @ |
1263 | CODE: |
1101 | CODE: |
1264 | RETVAL = cctx_idle; |
1102 | { |
1265 | OUTPUT: |
1103 | SV *yieldstack; |
1266 | RETVAL |
1104 | SV *sv; |
|
|
1105 | AV *defav = GvAV (PL_defgv); |
|
|
1106 | struct coro *prev, *next; |
|
|
1107 | |
|
|
1108 | yieldstack = *hv_fetch ( |
|
|
1109 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1110 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1111 | 0 |
|
|
1112 | ); |
|
|
1113 | |
|
|
1114 | /* set up @_ -- ugly */ |
|
|
1115 | av_clear (defav); |
|
|
1116 | av_fill (defav, items - 1); |
|
|
1117 | while (items--) |
|
|
1118 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1119 | |
|
|
1120 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1121 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1122 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1123 | SvREFCNT_dec (sv); |
|
|
1124 | |
|
|
1125 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1126 | } |
|
|
1127 | |
1267 | |
1128 | MODULE = Coro::State PACKAGE = Coro |
1268 | MODULE = Coro::State PACKAGE = Coro |
1129 | |
1269 | |
1130 | BOOT: |
1270 | BOOT: |
1131 | { |
1271 | { |
… | |
… | |
1138 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1278 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1139 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1279 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1140 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1280 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1141 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1281 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1142 | |
1282 | |
1143 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1283 | coro_current = get_sv ("Coro::current", FALSE); |
1144 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1284 | SvREADONLY_on (coro_current); |
1145 | |
1285 | |
1146 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1286 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1147 | coro_ready[i] = newAV (); |
1287 | coro_ready[i] = newAV (); |
1148 | |
1288 | |
1149 | { |
1289 | { |
1150 | SV *sv = perl_get_sv("Coro::API", 1); |
1290 | SV *sv = perl_get_sv("Coro::API", 1); |
1151 | |
1291 | |
1152 | coroapi.schedule = api_schedule; |
1292 | coroapi.schedule = api_schedule; |
|
|
1293 | coroapi.save = api_save; |
1153 | coroapi.cede = api_cede; |
1294 | coroapi.cede = api_cede; |
|
|
1295 | coroapi.cede_notself = api_cede_notself; |
1154 | coroapi.ready = api_ready; |
1296 | coroapi.ready = api_ready; |
|
|
1297 | coroapi.is_ready = api_is_ready; |
1155 | coroapi.nready = &coro_nready; |
1298 | coroapi.nready = &coro_nready; |
1156 | coroapi.current = coro_current; |
1299 | coroapi.current = coro_current; |
1157 | |
1300 | |
1158 | GCoroAPI = &coroapi; |
1301 | GCoroAPI = &coroapi; |
1159 | sv_setiv (sv, (IV)&coroapi); |
1302 | sv_setiv (sv, (IV)&coroapi); |
1160 | SvREADONLY_on (sv); |
1303 | SvREADONLY_on (sv); |
1161 | } |
1304 | } |
1162 | } |
1305 | } |
|
|
1306 | |
|
|
1307 | void |
|
|
1308 | _set_current (SV *current) |
|
|
1309 | PROTOTYPE: $ |
|
|
1310 | CODE: |
|
|
1311 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1312 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1163 | |
1313 | |
1164 | int |
1314 | int |
1165 | prio (Coro::State coro, int newprio = 0) |
1315 | prio (Coro::State coro, int newprio = 0) |
1166 | ALIAS: |
1316 | ALIAS: |
1167 | nice = 1 |
1317 | nice = 1 |
… | |
… | |
1170 | RETVAL = coro->prio; |
1320 | RETVAL = coro->prio; |
1171 | |
1321 | |
1172 | if (items > 1) |
1322 | if (items > 1) |
1173 | { |
1323 | { |
1174 | if (ix) |
1324 | if (ix) |
1175 | newprio += coro->prio; |
1325 | newprio = coro->prio - newprio; |
1176 | |
1326 | |
1177 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1327 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1178 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1328 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1179 | |
1329 | |
1180 | coro->prio = newprio; |
1330 | coro->prio = newprio; |
1181 | } |
1331 | } |
1182 | } |
1332 | } |
|
|
1333 | OUTPUT: |
|
|
1334 | RETVAL |
1183 | |
1335 | |
1184 | void |
1336 | SV * |
1185 | ready (SV *self) |
1337 | ready (SV *self) |
1186 | PROTOTYPE: $ |
1338 | PROTOTYPE: $ |
1187 | CODE: |
1339 | CODE: |
1188 | api_ready (self); |
1340 | RETVAL = boolSV (api_ready (self)); |
|
|
1341 | OUTPUT: |
|
|
1342 | RETVAL |
|
|
1343 | |
|
|
1344 | SV * |
|
|
1345 | is_ready (SV *self) |
|
|
1346 | PROTOTYPE: $ |
|
|
1347 | CODE: |
|
|
1348 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1349 | OUTPUT: |
|
|
1350 | RETVAL |
1189 | |
1351 | |
1190 | int |
1352 | int |
1191 | nready (...) |
1353 | nready (...) |
1192 | PROTOTYPE: |
1354 | PROTOTYPE: |
1193 | CODE: |
1355 | CODE: |
… | |
… | |
1199 | |
1361 | |
1200 | SV * |
1362 | SV * |
1201 | _get_state () |
1363 | _get_state () |
1202 | CODE: |
1364 | CODE: |
1203 | { |
1365 | { |
1204 | struct { |
1366 | struct io_state *data; |
1205 | int errorno; |
|
|
1206 | int laststype; |
|
|
1207 | int laststatval; |
|
|
1208 | Stat_t statcache; |
|
|
1209 | } data; |
|
|
1210 | |
1367 | |
|
|
1368 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1369 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1370 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1371 | SvPOK_only (RETVAL); |
|
|
1372 | |
1211 | data.errorno = errno; |
1373 | data->errorno = errno; |
1212 | data.laststype = PL_laststype; |
1374 | data->laststype = PL_laststype; |
1213 | data.laststatval = PL_laststatval; |
1375 | data->laststatval = PL_laststatval; |
1214 | data.statcache = PL_statcache; |
1376 | data->statcache = PL_statcache; |
1215 | |
|
|
1216 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1217 | } |
1377 | } |
1218 | OUTPUT: |
1378 | OUTPUT: |
1219 | RETVAL |
1379 | RETVAL |
1220 | |
1380 | |
1221 | void |
1381 | void |
1222 | _set_state (char *data_) |
1382 | _set_state (char *data_) |
1223 | PROTOTYPE: $ |
1383 | PROTOTYPE: $ |
1224 | CODE: |
1384 | CODE: |
1225 | { |
1385 | { |
1226 | struct { |
1386 | struct io_state *data = (void *)data_; |
1227 | int errorno; |
|
|
1228 | int laststype; |
|
|
1229 | int laststatval; |
|
|
1230 | Stat_t statcache; |
|
|
1231 | } *data = (void *)data_; |
|
|
1232 | |
1387 | |
1233 | errno = data->errorno; |
1388 | errno = data->errorno; |
1234 | PL_laststype = data->laststype; |
1389 | PL_laststype = data->laststype; |
1235 | PL_laststatval = data->laststatval; |
1390 | PL_laststatval = data->laststatval; |
1236 | PL_statcache = data->statcache; |
1391 | PL_statcache = data->statcache; |
1237 | } |
1392 | } |
|
|
1393 | |