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1 | #include "libcoro/coro.c" |
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2 | |
1 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
2 | #include "perl.h" |
4 | #include "perl.h" |
3 | #include "XSUB.h" |
5 | #include "XSUB.h" |
4 | |
6 | |
5 | #include "libcoro/coro.c" |
7 | #include "patchlevel.h" |
6 | |
8 | |
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9 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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10 | (PERL_REVISION > (a) \ |
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11 | || (PERL_REVISION == (a) \ |
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12 | && (PERL_VERSION > (b) \ |
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13 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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14 | |
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15 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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16 | # ifndef PL_ppaddr |
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17 | # define PL_ppaddr ppaddr |
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18 | # endif |
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19 | # ifndef call_sv |
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20 | # define call_sv perl_call_sv |
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21 | # endif |
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22 | # ifndef get_sv |
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23 | # define get_sv perl_get_sv |
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24 | # endif |
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25 | # ifndef get_cv |
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26 | # define get_cv perl_get_cv |
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27 | # endif |
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28 | # ifndef IS_PADGV |
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29 | # define IS_PADGV(v) 0 |
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30 | # endif |
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31 | # ifndef IS_PADCONST |
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32 | # define IS_PADCONST(v) 0 |
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33 | # endif |
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34 | #endif |
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35 | |
7 | #include <signal.h> |
36 | #include <stdio.h> |
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37 | #include <errno.h> |
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38 | |
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39 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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40 | # undef STACKGUARD |
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41 | #endif |
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42 | |
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43 | #ifndef STACKGUARD |
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44 | # define STACKGUARD 0 |
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45 | #endif |
8 | |
46 | |
9 | #ifdef HAVE_MMAP |
47 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
48 | # include <unistd.h> |
11 | # include <sys/mman.h> |
49 | # include <sys/mman.h> |
12 | # ifndef MAP_ANON |
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13 | # ifdef MAP_ANONYMOUS |
50 | # ifndef MAP_ANONYMOUS |
14 | # define MAP_ANON MAP_ANONYMOUS |
51 | # ifdef MAP_ANON |
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52 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
53 | # else |
16 | # undef HAVE_MMAP |
54 | # undef HAVE_MMAP |
17 | # endif |
55 | # endif |
18 | # endif |
56 | # endif |
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57 | # include <limits.h> |
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58 | # ifndef PAGESIZE |
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59 | # define PAGESIZE pagesize |
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60 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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61 | static long pagesize; |
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62 | # else |
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63 | # define BOOT_PAGESIZE |
19 | #endif |
64 | # endif |
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65 | #endif |
20 | |
66 | |
21 | #define MAY_FLUSH /* increases codesize */ |
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22 | |
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23 | #define SUB_INIT "Coro::State::initialize" |
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24 | #define UCORO_STATE "_coro_state" |
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25 | |
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26 | /* The next macro should delcare a variable stacklevel that contains and approximation |
67 | /* The next macro should declare a variable stacklevel that contains and approximation |
27 | * to the current C stack pointer. Its property is that it changes with each call |
68 | * to the current C stack pointer. Its property is that it changes with each call |
28 | * and should be unique. */ |
69 | * and should be unique. */ |
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70 | #define dSTACKLEVEL int stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
71 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
72 | |
31 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
73 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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74 | |
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75 | #if __GNUC__ >= 3 |
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76 | # define attribute(x) __attribute__(x) |
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77 | #else |
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78 | # define attribute(x) |
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79 | #endif |
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80 | |
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81 | #define NOINLINE attribute ((noinline)) |
32 | |
82 | |
33 | #include "CoroAPI.h" |
83 | #include "CoroAPI.h" |
34 | |
84 | |
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85 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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86 | |
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87 | #ifdef USE_ITHREADS |
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88 | static perl_mutex coro_mutex; |
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89 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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90 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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91 | #else |
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92 | # define LOCK (void)0 |
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93 | # define UNLOCK (void)0 |
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94 | #endif |
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95 | |
35 | static struct CoroAPI coroapi; |
96 | static struct CoroAPI coroapi; |
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97 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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98 | static HV *coro_state_stash, *coro_stash; |
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99 | static SV *coro_mortal; /* will be freed after next transfer */ |
36 | |
100 | |
37 | /* this is actually not only the c stack but also c registers etc... */ |
101 | /* this is a structure representing a c-level coroutine */ |
38 | typedef struct { |
102 | typedef struct coro_stack { |
39 | int refcnt; /* pointer reference counter */ |
103 | struct coro_stack *next; |
40 | int usecnt; /* shared by how many coroutines */ |
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41 | int gencnt; /* generation counter */ |
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42 | |
104 | |
43 | coro_context cctx; |
105 | /* the stack */ |
44 | |
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45 | void *sptr; |
106 | void *sptr; |
46 | long ssize; /* positive == mmap, otherwise malloc */ |
107 | long ssize; /* positive == mmap, otherwise malloc */ |
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108 | |
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109 | /* cpu state */ |
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110 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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111 | JMPENV *top_env; |
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112 | coro_context cctx; |
47 | } coro_stack; |
113 | } coro_stack; |
48 | |
114 | |
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115 | /* this is a structure representing a perl-level coroutine */ |
49 | struct coro { |
116 | struct coro { |
50 | /* the optional C context */ |
117 | /* the c coroutine allocated to this perl coroutine, if any */ |
51 | coro_stack *stack; |
118 | coro_stack *stack; |
52 | void *cursp; |
119 | |
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120 | /* data associated with this coroutine (initial args) */ |
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121 | AV *args; |
53 | int gencnt; |
122 | int refcnt; |
54 | |
123 | |
55 | /* optionally saved, might be zero */ |
124 | /* optionally saved, might be zero */ |
56 | AV *defav; |
125 | AV *defav; |
57 | SV *defsv; |
126 | SV *defsv; |
58 | SV *errsv; |
127 | SV *errsv; |
… | |
… | |
66 | AV *curstack; |
135 | AV *curstack; |
67 | AV *mainstack; |
136 | AV *mainstack; |
68 | SV **stack_sp; |
137 | SV **stack_sp; |
69 | OP *op; |
138 | OP *op; |
70 | SV **curpad; |
139 | SV **curpad; |
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140 | AV *comppad; |
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141 | CV *compcv; |
71 | SV **stack_base; |
142 | SV **stack_base; |
72 | SV **stack_max; |
143 | SV **stack_max; |
73 | SV **tmps_stack; |
144 | SV **tmps_stack; |
74 | I32 tmps_floor; |
145 | I32 tmps_floor; |
75 | I32 tmps_ix; |
146 | I32 tmps_ix; |
… | |
… | |
84 | I32 savestack_ix; |
155 | I32 savestack_ix; |
85 | I32 savestack_max; |
156 | I32 savestack_max; |
86 | OP **retstack; |
157 | OP **retstack; |
87 | I32 retstack_ix; |
158 | I32 retstack_ix; |
88 | I32 retstack_max; |
159 | I32 retstack_max; |
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160 | PMOP *curpm; |
89 | COP *curcop; |
161 | COP *curcop; |
90 | JMPENV *top_env; |
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91 | |
162 | |
92 | /* data associated with this coroutine (initial args) */ |
163 | /* coro process data */ |
93 | AV *args; |
164 | int prio; |
94 | }; |
165 | }; |
95 | |
166 | |
96 | typedef struct coro *Coro__State; |
167 | typedef struct coro *Coro__State; |
97 | typedef struct coro *Coro__State_or_hashref; |
168 | typedef struct coro *Coro__State_or_hashref; |
98 | |
169 | |
99 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
170 | static AV * |
100 | static HV *coro_state_stash; |
171 | coro_clone_padlist (CV *cv) |
101 | static SV *ucoro_state_sv; |
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102 | static U32 ucoro_state_hash; |
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103 | static HV *padlist_cache; |
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104 | |
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105 | /* mostly copied from op.c:cv_clone2 */ |
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106 | STATIC AV * |
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107 | clone_padlist (AV *protopadlist) |
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108 | { |
172 | { |
109 | AV *av; |
173 | AV *padlist = CvPADLIST (cv); |
110 | I32 ix; |
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111 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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112 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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113 | SV **pname = AvARRAY (protopad_name); |
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114 | SV **ppad = AvARRAY (protopad); |
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115 | I32 fname = AvFILLp (protopad_name); |
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116 | I32 fpad = AvFILLp (protopad); |
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117 | AV *newpadlist, *newpad_name, *newpad; |
174 | AV *newpadlist, *newpad; |
118 | SV **npad; |
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119 | |
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120 | newpad_name = newAV (); |
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121 | for (ix = fname; ix >= 0; ix--) |
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122 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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123 | |
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124 | newpad = newAV (); |
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125 | av_fill (newpad, AvFILLp (protopad)); |
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126 | npad = AvARRAY (newpad); |
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127 | |
175 | |
128 | newpadlist = newAV (); |
176 | newpadlist = newAV (); |
129 | AvREAL_off (newpadlist); |
177 | AvREAL_off (newpadlist); |
130 | av_store (newpadlist, 0, (SV *) newpad_name); |
178 | #if PERL_VERSION_ATLEAST (5,9,0) |
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179 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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180 | #else |
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181 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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182 | #endif |
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183 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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184 | --AvFILLp (padlist); |
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185 | |
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186 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
131 | av_store (newpadlist, 1, (SV *) newpad); |
187 | av_store (newpadlist, 1, (SV *)newpad); |
132 | |
188 | |
133 | av = newAV (); /* will be @_ */ |
189 | return newpadlist; |
134 | av_extend (av, 0); |
190 | } |
135 | av_store (newpad, 0, (SV *) av); |
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136 | AvFLAGS (av) = AVf_REIFY; |
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137 | |
191 | |
138 | for (ix = fpad; ix > 0; ix--) |
192 | static void |
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193 | free_padlist (AV *padlist) |
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194 | { |
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195 | /* may be during global destruction */ |
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196 | if (SvREFCNT (padlist)) |
139 | { |
197 | { |
140 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
198 | I32 i = AvFILLp (padlist); |
141 | if (namesv && namesv != &PL_sv_undef) |
199 | while (i >= 0) |
142 | { |
200 | { |
143 | char *name = SvPVX (namesv); /* XXX */ |
201 | SV **svp = av_fetch (padlist, i--, FALSE); |
144 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
202 | if (svp) |
145 | { /* lexical from outside? */ |
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146 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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147 | } |
203 | { |
148 | else |
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149 | { /* our own lexical */ |
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150 | SV *sv; |
204 | SV *sv; |
151 | if (*name == '&') |
205 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
152 | sv = SvREFCNT_inc (ppad[ix]); |
206 | SvREFCNT_dec (sv); |
153 | else if (*name == '@') |
207 | |
154 | sv = (SV *) newAV (); |
208 | SvREFCNT_dec (*svp); |
155 | else if (*name == '%') |
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156 | sv = (SV *) newHV (); |
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157 | else |
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158 | sv = NEWSV (0, 0); |
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159 | if (!SvPADBUSY (sv)) |
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160 | SvPADMY_on (sv); |
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161 | npad[ix] = sv; |
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162 | } |
209 | } |
163 | } |
210 | } |
164 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
211 | |
165 | { |
212 | SvREFCNT_dec ((SV*)padlist); |
166 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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167 | } |
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168 | else |
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169 | { |
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170 | SV *sv = NEWSV (0, 0); |
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171 | SvPADTMP_on (sv); |
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172 | npad[ix] = sv; |
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173 | } |
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174 | } |
213 | } |
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214 | } |
175 | |
215 | |
176 | #if 0 /* return -ENOTUNDERSTOOD */ |
216 | static int |
177 | /* Now that vars are all in place, clone nested closures. */ |
217 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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218 | { |
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219 | AV *padlist; |
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220 | AV *av = (AV *)mg->mg_obj; |
178 | |
221 | |
179 | for (ix = fpad; ix > 0; ix--) { |
222 | /* casting is fun. */ |
180 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
223 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
181 | if (namesv |
224 | free_padlist (padlist); |
182 | && namesv != &PL_sv_undef |
225 | |
183 | && !(SvFLAGS(namesv) & SVf_FAKE) |
226 | SvREFCNT_dec (av); |
184 | && *SvPVX(namesv) == '&' |
227 | |
185 | && CvCLONE(ppad[ix])) |
228 | return 0; |
186 | { |
229 | } |
187 | CV *kid = cv_clone((CV*)ppad[ix]); |
230 | |
188 | SvREFCNT_dec(ppad[ix]); |
231 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
189 | CvCLONE_on(kid); |
232 | |
190 | SvPADMY_on(kid); |
233 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
191 | npad[ix] = (SV*)kid; |
234 | |
192 | } |
235 | /* the next two functions merely cache the padlists */ |
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236 | static void |
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237 | get_padlist (CV *cv) |
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238 | { |
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239 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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240 | |
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241 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
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242 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
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243 | else |
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244 | { |
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245 | #if 0 |
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246 | /* this is probably cleaner, but also slower? */ |
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247 | CV *cp = Perl_cv_clone (cv); |
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248 | CvPADLIST (cv) = CvPADLIST (cp); |
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249 | CvPADLIST (cp) = 0; |
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250 | SvREFCNT_dec (cp); |
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251 | #else |
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252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
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253 | #endif |
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254 | } |
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255 | } |
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256 | |
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257 | static void |
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258 | put_padlist (CV *cv) |
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259 | { |
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260 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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261 | |
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262 | if (!mg) |
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263 | { |
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264 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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265 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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266 | mg->mg_virtual = &vtbl_coro; |
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267 | mg->mg_obj = (SV *)newAV (); |
193 | } |
268 | } |
194 | #endif |
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195 | |
269 | |
196 | return newpadlist; |
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197 | } |
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198 | |
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199 | #ifdef MAY_FLUSH |
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200 | STATIC void |
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201 | free_padlist (AV *padlist) |
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202 | { |
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203 | /* may be during global destruction */ |
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204 | if (SvREFCNT(padlist)) |
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205 | { |
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206 | I32 i = AvFILLp(padlist); |
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207 | while (i >= 0) |
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208 | { |
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209 | SV **svp = av_fetch(padlist, i--, FALSE); |
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210 | SV *sv = svp ? *svp : Nullsv; |
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211 | if (sv) |
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212 | SvREFCNT_dec(sv); |
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213 | } |
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214 | |
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215 | SvREFCNT_dec((SV*)padlist); |
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216 | } |
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217 | } |
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218 | #endif |
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219 | |
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220 | /* the next two functions merely cache the padlists */ |
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221 | STATIC void |
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222 | get_padlist (CV *cv) |
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223 | { |
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224 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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225 | |
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226 | if (he && AvFILLp ((AV *)*he) >= 0) |
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227 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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228 | else |
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229 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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230 | } |
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231 | |
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232 | STATIC void |
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233 | put_padlist (CV *cv) |
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234 | { |
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235 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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236 | |
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237 | if (SvTYPE (*he) != SVt_PVAV) |
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238 | { |
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239 | SvREFCNT_dec (*he); |
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240 | *he = (SV *)newAV (); |
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241 | } |
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242 | |
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243 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
270 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
244 | } |
271 | } |
245 | |
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246 | #ifdef MAY_FLUSH |
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247 | STATIC void |
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248 | flush_padlist_cache () |
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249 | { |
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250 | HV *hv = padlist_cache; |
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251 | padlist_cache = newHV (); |
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252 | |
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253 | if (hv_iterinit (hv)) |
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254 | { |
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255 | HE *he; |
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256 | AV *padlist; |
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257 | |
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258 | while (!!(he = hv_iternext (hv))) |
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259 | { |
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260 | AV *av = (AV *)HeVAL(he); |
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261 | |
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262 | /* casting is fun. */ |
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263 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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264 | free_padlist (padlist); |
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265 | } |
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266 | } |
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267 | |
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268 | SvREFCNT_dec (hv); |
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269 | } |
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270 | #endif |
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271 | |
272 | |
272 | #define SB do { |
273 | #define SB do { |
273 | #define SE } while (0) |
274 | #define SE } while (0) |
274 | |
275 | |
275 | #define LOAD(state) SB load_state(aTHX_ (state)); SPAGAIN; SE |
276 | #define LOAD(state) load_state((state)); |
276 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ (state),(flags)); SE |
277 | #define SAVE(state,flags) save_state((state),(flags)); |
277 | |
278 | |
278 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
279 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
279 | |
280 | |
280 | static void |
281 | static void |
281 | load_state(pTHX_ Coro__State c) |
282 | load_state(Coro__State c) |
282 | { |
283 | { |
283 | PL_dowarn = c->dowarn; |
284 | PL_dowarn = c->dowarn; |
284 | PL_in_eval = c->in_eval; |
285 | PL_in_eval = c->in_eval; |
285 | |
286 | |
286 | PL_curstackinfo = c->curstackinfo; |
287 | PL_curstackinfo = c->curstackinfo; |
287 | PL_curstack = c->curstack; |
288 | PL_curstack = c->curstack; |
288 | PL_mainstack = c->mainstack; |
289 | PL_mainstack = c->mainstack; |
289 | PL_stack_sp = c->stack_sp; |
290 | PL_stack_sp = c->stack_sp; |
290 | PL_op = c->op; |
291 | PL_op = c->op; |
291 | PL_curpad = c->curpad; |
292 | PL_curpad = c->curpad; |
|
|
293 | PL_comppad = c->comppad; |
|
|
294 | PL_compcv = c->compcv; |
292 | PL_stack_base = c->stack_base; |
295 | PL_stack_base = c->stack_base; |
293 | PL_stack_max = c->stack_max; |
296 | PL_stack_max = c->stack_max; |
294 | PL_tmps_stack = c->tmps_stack; |
297 | PL_tmps_stack = c->tmps_stack; |
295 | PL_tmps_floor = c->tmps_floor; |
298 | PL_tmps_floor = c->tmps_floor; |
296 | PL_tmps_ix = c->tmps_ix; |
299 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
302 | PL_scopestack_ix = c->scopestack_ix; |
305 | PL_scopestack_ix = c->scopestack_ix; |
303 | PL_scopestack_max = c->scopestack_max; |
306 | PL_scopestack_max = c->scopestack_max; |
304 | PL_savestack = c->savestack; |
307 | PL_savestack = c->savestack; |
305 | PL_savestack_ix = c->savestack_ix; |
308 | PL_savestack_ix = c->savestack_ix; |
306 | PL_savestack_max = c->savestack_max; |
309 | PL_savestack_max = c->savestack_max; |
|
|
310 | #if !PERL_VERSION_ATLEAST (5,9,0) |
307 | PL_retstack = c->retstack; |
311 | PL_retstack = c->retstack; |
308 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_ix = c->retstack_ix; |
309 | PL_retstack_max = c->retstack_max; |
313 | PL_retstack_max = c->retstack_max; |
|
|
314 | #endif |
|
|
315 | PL_curpm = c->curpm; |
310 | PL_curcop = c->curcop; |
316 | PL_curcop = c->curcop; |
311 | PL_top_env = c->top_env; |
|
|
312 | |
317 | |
313 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
318 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
314 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
319 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
315 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
320 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
316 | |
321 | |
… | |
… | |
325 | |
330 | |
326 | if (padlist) |
331 | if (padlist) |
327 | { |
332 | { |
328 | put_padlist (cv); /* mark this padlist as available */ |
333 | put_padlist (cv); /* mark this padlist as available */ |
329 | CvPADLIST(cv) = padlist; |
334 | CvPADLIST(cv) = padlist; |
330 | #ifdef USE_THREADS |
|
|
331 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
332 | #endif |
|
|
333 | } |
335 | } |
334 | |
336 | |
335 | ++CvDEPTH(cv); |
337 | ++CvDEPTH(cv); |
336 | } |
338 | } |
337 | |
339 | |
338 | PUTBACK; |
340 | PUTBACK; |
339 | } |
341 | } |
340 | } |
342 | } |
341 | |
343 | |
342 | static void |
344 | static void |
343 | save_state(pTHX_ Coro__State c, int flags) |
345 | save_state(Coro__State c, int flags) |
344 | { |
346 | { |
345 | { |
347 | { |
346 | dSP; |
348 | dSP; |
347 | I32 cxix = cxstack_ix; |
349 | I32 cxix = cxstack_ix; |
348 | PERL_CONTEXT *ccstk = cxstack; |
350 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
355 | |
357 | |
356 | PUSHs (Nullsv); |
358 | PUSHs (Nullsv); |
357 | /* this loop was inspired by pp_caller */ |
359 | /* this loop was inspired by pp_caller */ |
358 | for (;;) |
360 | for (;;) |
359 | { |
361 | { |
360 | do |
362 | while (cxix >= 0) |
361 | { |
363 | { |
362 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
364 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
363 | |
365 | |
364 | if (CxTYPE(cx) == CXt_SUB) |
366 | if (CxTYPE(cx) == CXt_SUB) |
365 | { |
367 | { |
366 | CV *cv = cx->blk_sub.cv; |
368 | CV *cv = cx->blk_sub.cv; |
367 | if (CvDEPTH(cv)) |
369 | if (CvDEPTH(cv)) |
368 | { |
370 | { |
369 | #ifdef USE_THREADS |
|
|
370 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
371 | /*CvOWNER(cv) = 0;*/ |
|
|
372 | /*error must unlock this cv etc.. etc...*/ |
|
|
373 | #endif |
|
|
374 | EXTEND (SP, CvDEPTH(cv)*2); |
371 | EXTEND (SP, CvDEPTH(cv)*2); |
375 | |
372 | |
376 | while (--CvDEPTH(cv)) |
373 | while (--CvDEPTH(cv)) |
377 | { |
374 | { |
378 | /* this tells the restore code to increment CvDEPTH */ |
375 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
381 | } |
378 | } |
382 | |
379 | |
383 | PUSHs ((SV *)CvPADLIST(cv)); |
380 | PUSHs ((SV *)CvPADLIST(cv)); |
384 | PUSHs ((SV *)cv); |
381 | PUSHs ((SV *)cv); |
385 | |
382 | |
386 | get_padlist (cv); /* this is a monster */ |
383 | get_padlist (cv); |
387 | } |
384 | } |
388 | } |
385 | } |
|
|
386 | #ifdef CXt_FORMAT |
389 | else if (CxTYPE(cx) == CXt_FORMAT) |
387 | else if (CxTYPE(cx) == CXt_FORMAT) |
390 | { |
388 | { |
391 | /* I never used formats, so how should I know how these are implemented? */ |
389 | /* I never used formats, so how should I know how these are implemented? */ |
392 | /* my bold guess is as a simple, plain sub... */ |
390 | /* my bold guess is as a simple, plain sub... */ |
393 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
391 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
394 | } |
392 | } |
|
|
393 | #endif |
395 | } |
394 | } |
396 | while (cxix >= 0); |
|
|
397 | |
395 | |
398 | if (top_si->si_type == PERLSI_MAIN) |
396 | if (top_si->si_type == PERLSI_MAIN) |
399 | break; |
397 | break; |
400 | |
398 | |
401 | top_si = top_si->si_prev; |
399 | top_si = top_si->si_prev; |
… | |
… | |
407 | } |
405 | } |
408 | |
406 | |
409 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
407 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
410 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
408 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
411 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
409 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
412 | |
|
|
413 | /* I have not the slightest idea of why av_reify is necessary */ |
|
|
414 | /* but if it's missing the defav contents magically get replaced sometimes */ |
|
|
415 | if (c->defav) |
|
|
416 | av_reify (c->defav); |
|
|
417 | |
410 | |
418 | c->dowarn = PL_dowarn; |
411 | c->dowarn = PL_dowarn; |
419 | c->in_eval = PL_in_eval; |
412 | c->in_eval = PL_in_eval; |
420 | |
413 | |
421 | c->curstackinfo = PL_curstackinfo; |
414 | c->curstackinfo = PL_curstackinfo; |
422 | c->curstack = PL_curstack; |
415 | c->curstack = PL_curstack; |
423 | c->mainstack = PL_mainstack; |
416 | c->mainstack = PL_mainstack; |
424 | c->stack_sp = PL_stack_sp; |
417 | c->stack_sp = PL_stack_sp; |
425 | c->op = PL_op; |
418 | c->op = PL_op; |
426 | c->curpad = PL_curpad; |
419 | c->curpad = PL_curpad; |
|
|
420 | c->comppad = PL_comppad; |
|
|
421 | c->compcv = PL_compcv; |
427 | c->stack_base = PL_stack_base; |
422 | c->stack_base = PL_stack_base; |
428 | c->stack_max = PL_stack_max; |
423 | c->stack_max = PL_stack_max; |
429 | c->tmps_stack = PL_tmps_stack; |
424 | c->tmps_stack = PL_tmps_stack; |
430 | c->tmps_floor = PL_tmps_floor; |
425 | c->tmps_floor = PL_tmps_floor; |
431 | c->tmps_ix = PL_tmps_ix; |
426 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
437 | c->scopestack_ix = PL_scopestack_ix; |
432 | c->scopestack_ix = PL_scopestack_ix; |
438 | c->scopestack_max = PL_scopestack_max; |
433 | c->scopestack_max = PL_scopestack_max; |
439 | c->savestack = PL_savestack; |
434 | c->savestack = PL_savestack; |
440 | c->savestack_ix = PL_savestack_ix; |
435 | c->savestack_ix = PL_savestack_ix; |
441 | c->savestack_max = PL_savestack_max; |
436 | c->savestack_max = PL_savestack_max; |
|
|
437 | #if !PERL_VERSION_ATLEAST (5,9,0) |
442 | c->retstack = PL_retstack; |
438 | c->retstack = PL_retstack; |
443 | c->retstack_ix = PL_retstack_ix; |
439 | c->retstack_ix = PL_retstack_ix; |
444 | c->retstack_max = PL_retstack_max; |
440 | c->retstack_max = PL_retstack_max; |
|
|
441 | #endif |
|
|
442 | c->curpm = PL_curpm; |
445 | c->curcop = PL_curcop; |
443 | c->curcop = PL_curcop; |
446 | c->top_env = PL_top_env; |
|
|
447 | } |
444 | } |
448 | |
445 | |
449 | /* |
446 | /* |
450 | * allocate various perl stacks. This is an exact copy |
447 | * allocate various perl stacks. This is an exact copy |
451 | * of perl.c:init_stacks, except that it uses less memory |
448 | * of perl.c:init_stacks, except that it uses less memory |
452 | * on the assumption that coroutines do not usually need |
449 | * on the (sometimes correct) assumption that coroutines do |
453 | * a lot of stackspace. |
450 | * not usually need a lot of stackspace. |
454 | */ |
451 | */ |
455 | STATIC void |
452 | static void |
456 | coro_init_stacks (pTHX) |
453 | coro_init_stacks () |
457 | { |
454 | { |
458 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
459 | PL_curstackinfo->si_type = PERLSI_MAIN; |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
460 | PL_curstack = PL_curstackinfo->si_stack; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
461 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
… | |
… | |
471 | |
468 | |
472 | New(54,PL_markstack,16,I32); |
469 | New(54,PL_markstack,16,I32); |
473 | PL_markstack_ptr = PL_markstack; |
470 | PL_markstack_ptr = PL_markstack; |
474 | PL_markstack_max = PL_markstack + 16; |
471 | PL_markstack_max = PL_markstack + 16; |
475 | |
472 | |
|
|
473 | #ifdef SET_MARK_OFFSET |
476 | SET_MARK_OFFSET; |
474 | SET_MARK_OFFSET; |
|
|
475 | #endif |
477 | |
476 | |
478 | New(54,PL_scopestack,16,I32); |
477 | New(54,PL_scopestack,16,I32); |
479 | PL_scopestack_ix = 0; |
478 | PL_scopestack_ix = 0; |
480 | PL_scopestack_max = 16; |
479 | PL_scopestack_max = 16; |
481 | |
480 | |
482 | New(54,PL_savestack,96,ANY); |
481 | New(54,PL_savestack,96,ANY); |
483 | PL_savestack_ix = 0; |
482 | PL_savestack_ix = 0; |
484 | PL_savestack_max = 96; |
483 | PL_savestack_max = 96; |
485 | |
484 | |
|
|
485 | #if !PERL_VERSION_ATLEAST (5,9,0) |
486 | New(54,PL_retstack,8,OP*); |
486 | New(54,PL_retstack,8,OP*); |
487 | PL_retstack_ix = 0; |
487 | PL_retstack_ix = 0; |
488 | PL_retstack_max = 8; |
488 | PL_retstack_max = 8; |
|
|
489 | #endif |
489 | } |
490 | } |
490 | |
491 | |
491 | /* |
492 | /* |
492 | * destroy the stacks, the callchain etc... |
493 | * destroy the stacks, the callchain etc... |
493 | * still there is a memleak of 128 bytes... |
|
|
494 | */ |
494 | */ |
495 | STATIC void |
495 | static void |
496 | destroy_stacks(pTHX) |
496 | coro_destroy_stacks() |
497 | { |
497 | { |
|
|
498 | if (!IN_DESTRUCT) |
|
|
499 | { |
498 | /* is this ugly, I ask? */ |
500 | /* is this ugly, I ask? */ |
499 | while (PL_scopestack_ix) |
501 | LEAVE_SCOPE (0); |
500 | LEAVE; |
|
|
501 | |
502 | |
502 | /* sure it is, but more important: is it correct?? :/ */ |
503 | /* sure it is, but more important: is it correct?? :/ */ |
503 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
504 | FREETMPS; |
504 | FREETMPS; |
|
|
505 | |
|
|
506 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
507 | } |
505 | |
508 | |
506 | while (PL_curstackinfo->si_next) |
509 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
510 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
511 | |
509 | while (PL_curstackinfo) |
512 | while (PL_curstackinfo) |
510 | { |
513 | { |
511 | PERL_SI *p = PL_curstackinfo->si_prev; |
514 | PERL_SI *p = PL_curstackinfo->si_prev; |
512 | |
515 | |
513 | { |
516 | { /*D*//*remove*/ |
514 | dSP; |
517 | dSP; |
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
518 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
516 | PUTBACK; /* possibly superfluous */ |
519 | PUTBACK; /* possibly superfluous */ |
517 | } |
520 | } |
518 | |
521 | |
519 | if (PL_main_cv != Nullcv) /* don't during destruction. hack? */ |
522 | if (!IN_DESTRUCT) |
520 | dounwind(-1); |
523 | { |
521 | |
524 | dounwind (-1);/*D*//*remove*/ |
522 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
525 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
526 | } |
|
|
527 | |
523 | Safefree(PL_curstackinfo->si_cxstack); |
528 | Safefree (PL_curstackinfo->si_cxstack); |
524 | Safefree(PL_curstackinfo); |
529 | Safefree (PL_curstackinfo); |
525 | PL_curstackinfo = p; |
530 | PL_curstackinfo = p; |
526 | } |
531 | } |
527 | |
532 | |
528 | Safefree(PL_tmps_stack); |
533 | Safefree (PL_tmps_stack); |
529 | Safefree(PL_markstack); |
534 | Safefree (PL_markstack); |
530 | Safefree(PL_scopestack); |
535 | Safefree (PL_scopestack); |
531 | Safefree(PL_savestack); |
536 | Safefree (PL_savestack); |
|
|
537 | #if !PERL_VERSION_ATLEAST (5,9,0) |
532 | Safefree(PL_retstack); |
538 | Safefree (PL_retstack); |
533 | } |
|
|
534 | |
|
|
535 | static void |
|
|
536 | allocate_stack (Coro__State ctx, int alloc) |
|
|
537 | { |
|
|
538 | coro_stack *stack; |
|
|
539 | |
|
|
540 | New (0, stack, 1, coro_stack); |
|
|
541 | |
|
|
542 | stack->refcnt = 1; |
|
|
543 | stack->usecnt = 1; |
|
|
544 | stack->gencnt = ctx->gencnt = 0; |
|
|
545 | if (alloc) |
|
|
546 | { |
|
|
547 | #ifdef HAVE_MMAP |
|
|
548 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
549 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
|
|
550 | if (stack->sptr == (void *)-1) |
|
|
551 | #endif |
539 | #endif |
552 | { |
|
|
553 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
554 | stack->ssize = -4096 * sizeof (long); |
|
|
555 | New (0, stack->sptr, 4096, long); |
|
|
556 | } |
|
|
557 | } |
|
|
558 | else |
|
|
559 | stack->sptr = 0; |
|
|
560 | |
|
|
561 | ctx->stack = stack; |
|
|
562 | } |
540 | } |
563 | |
541 | |
564 | static void |
542 | static void |
565 | deallocate_stack (Coro__State ctx) |
543 | setup_coro (struct coro *coro) |
566 | { |
|
|
567 | coro_stack *stack = ctx->stack; |
|
|
568 | |
|
|
569 | ctx->stack = 0; |
|
|
570 | |
|
|
571 | if (stack) |
|
|
572 | { |
|
|
573 | if (!--stack->refcnt) |
|
|
574 | { |
|
|
575 | #ifdef HAVE_MMAP |
|
|
576 | if (stack->ssize > 0 && stack->sptr) |
|
|
577 | munmap (stack->sptr, stack->ssize); |
|
|
578 | else |
|
|
579 | #else |
|
|
580 | Safefree (stack->sptr); |
|
|
581 | #endif |
|
|
582 | Safefree (stack); |
|
|
583 | } |
|
|
584 | else if (ctx->gencnt == stack->gencnt) |
|
|
585 | --stack->usecnt; |
|
|
586 | } |
|
|
587 | } |
|
|
588 | |
|
|
589 | static void |
|
|
590 | setup_coro (void *arg) |
|
|
591 | { |
544 | { |
592 | /* |
545 | /* |
593 | * emulate part of the perl startup here. |
546 | * emulate part of the perl startup here. |
594 | */ |
547 | */ |
|
|
548 | |
|
|
549 | coro_init_stacks (); |
|
|
550 | |
|
|
551 | PL_curcop = 0; |
|
|
552 | PL_in_eval = 0; |
|
|
553 | PL_curpm = 0; |
|
|
554 | |
|
|
555 | { |
|
|
556 | dSP; |
|
|
557 | LOGOP myop; |
|
|
558 | |
|
|
559 | /* I have no idea why this is needed, but it is */ |
|
|
560 | PUSHMARK (SP); |
|
|
561 | |
|
|
562 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
563 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
564 | |
|
|
565 | Zero (&myop, 1, LOGOP); |
|
|
566 | myop.op_next = Nullop; |
|
|
567 | myop.op_flags = OPf_WANT_VOID; |
|
|
568 | |
|
|
569 | PL_op = (OP *)&myop; |
|
|
570 | |
|
|
571 | PUSHMARK (SP); |
|
|
572 | XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE)); |
|
|
573 | PUTBACK; |
|
|
574 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
575 | SPAGAIN; |
|
|
576 | |
|
|
577 | ENTER; /* necessary e.g. for dounwind */ |
|
|
578 | } |
|
|
579 | } |
|
|
580 | |
|
|
581 | static void |
|
|
582 | free_coro_mortal () |
|
|
583 | { |
|
|
584 | if (coro_mortal) |
|
|
585 | { |
|
|
586 | SvREFCNT_dec (coro_mortal); |
|
|
587 | coro_mortal = 0; |
|
|
588 | } |
|
|
589 | } |
|
|
590 | |
|
|
591 | static void NOINLINE |
|
|
592 | prepare_cctx (coro_stack *cctx) |
|
|
593 | { |
595 | dSP; |
594 | dSP; |
596 | Coro__State ctx = (Coro__State)arg; |
595 | LOGOP myop; |
597 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
598 | |
596 | |
599 | coro_init_stacks (aTHX); |
597 | Zero (&myop, 1, LOGOP); |
600 | /*PL_curcop = 0;*/ |
598 | myop.op_next = PL_op; |
601 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
599 | myop.op_flags = OPf_WANT_VOID; |
602 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
603 | GvAV (PL_defgv) = ctx->args; |
|
|
604 | |
600 | |
|
|
601 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx)); |
|
|
602 | |
|
|
603 | PUSHMARK (SP); |
|
|
604 | XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
605 | PUTBACK; |
|
|
606 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
605 | SPAGAIN; |
607 | SPAGAIN; |
606 | |
|
|
607 | if (ctx->stack) |
|
|
608 | { |
|
|
609 | ctx->cursp = 0; |
|
|
610 | |
|
|
611 | PUSHMARK(SP); |
|
|
612 | PUTBACK; |
|
|
613 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
614 | |
|
|
615 | if (SvTRUE (ERRSV)) |
|
|
616 | croak (NULL); |
|
|
617 | else |
|
|
618 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
619 | } |
|
|
620 | else |
|
|
621 | { |
|
|
622 | UNOP myop; |
|
|
623 | |
|
|
624 | PL_op = (OP *)&myop; |
|
|
625 | |
|
|
626 | Zero(&myop, 1, UNOP); |
|
|
627 | myop.op_next = Nullop; |
|
|
628 | myop.op_flags = OPf_WANT_VOID; |
|
|
629 | |
|
|
630 | PUSHMARK(SP); |
|
|
631 | XPUSHs (sub_init); |
|
|
632 | /* |
|
|
633 | * the next line is slightly wrong, as PL_op->op_next |
|
|
634 | * is actually being executed so we skip the first op. |
|
|
635 | * that doesn't matter, though, since it is only |
|
|
636 | * pp_nextstate and we never return... |
|
|
637 | * ah yes, and I don't care anyways ;) |
|
|
638 | */ |
|
|
639 | PUTBACK; |
|
|
640 | PL_op = pp_entersub(); |
|
|
641 | SPAGAIN; |
|
|
642 | |
|
|
643 | ENTER; /* necessary e.g. for dounwind */ |
|
|
644 | } |
|
|
645 | } |
608 | } |
646 | |
609 | |
647 | static void |
610 | static void |
648 | continue_coro (void *arg) |
611 | coro_run (void *arg) |
649 | { |
612 | { |
|
|
613 | /* coro_run is the alternative epilogue of transfer() */ |
|
|
614 | UNLOCK; |
|
|
615 | |
650 | /* |
616 | /* |
651 | * this is a _very_ stripped down perl interpreter ;) |
617 | * this is a _very_ stripped down perl interpreter ;) |
652 | */ |
618 | */ |
653 | Coro__State ctx = (Coro__State)arg; |
619 | PL_top_env = &PL_start_env; |
|
|
620 | /* inject call to cctx_init */ |
|
|
621 | prepare_cctx ((coro_stack *)arg); |
654 | |
622 | |
655 | /*FIXME*//* must set up top_env here */ |
623 | /* somebody will hit me for both perl_run and PL_restartop */ |
656 | ctx->cursp = 0; |
624 | perl_run (PL_curinterp); |
657 | PL_op = PL_op->op_next; |
|
|
658 | CALLRUNOPS(aTHX); |
|
|
659 | |
625 | |
|
|
626 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
660 | abort (); |
627 | abort (); |
661 | } |
628 | } |
662 | |
629 | |
663 | STATIC void |
630 | static coro_stack * |
|
|
631 | stack_new () |
|
|
632 | { |
|
|
633 | coro_stack *stack; |
|
|
634 | |
|
|
635 | New (0, stack, 1, coro_stack); |
|
|
636 | |
|
|
637 | #if HAVE_MMAP |
|
|
638 | |
|
|
639 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
640 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
641 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
642 | |
|
|
643 | if (stack->sptr == (void *)-1) |
|
|
644 | { |
|
|
645 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
646 | _exit (EXIT_FAILURE); |
|
|
647 | } |
|
|
648 | |
|
|
649 | # if STACKGUARD |
|
|
650 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
651 | # endif |
|
|
652 | |
|
|
653 | #else |
|
|
654 | |
|
|
655 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
656 | New (0, stack->sptr, STACKSIZE, long); |
|
|
657 | |
|
|
658 | if (!stack->sptr) |
|
|
659 | { |
|
|
660 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
661 | _exit (EXIT_FAILURE); |
|
|
662 | } |
|
|
663 | |
|
|
664 | #endif |
|
|
665 | |
|
|
666 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
667 | |
|
|
668 | return stack; |
|
|
669 | } |
|
|
670 | |
|
|
671 | static void |
|
|
672 | stack_free (coro_stack *stack) |
|
|
673 | { |
|
|
674 | if (!stack) |
|
|
675 | return; |
|
|
676 | |
|
|
677 | #if HAVE_MMAP |
|
|
678 | munmap (stack->sptr, stack->ssize); |
|
|
679 | #else |
|
|
680 | Safefree (stack->sptr); |
|
|
681 | #endif |
|
|
682 | |
|
|
683 | Safefree (stack); |
|
|
684 | } |
|
|
685 | |
|
|
686 | static coro_stack *stack_first; |
|
|
687 | static int cctx_count, cctx_idle; |
|
|
688 | |
|
|
689 | static coro_stack * |
|
|
690 | stack_get () |
|
|
691 | { |
|
|
692 | coro_stack *stack; |
|
|
693 | |
|
|
694 | if (stack_first) |
|
|
695 | { |
|
|
696 | --cctx_idle; |
|
|
697 | stack = stack_first; |
|
|
698 | stack_first = stack->next; |
|
|
699 | } |
|
|
700 | else |
|
|
701 | { |
|
|
702 | ++cctx_count; |
|
|
703 | stack = stack_new (); |
|
|
704 | PL_op = PL_op->op_next; |
|
|
705 | } |
|
|
706 | |
|
|
707 | return stack; |
|
|
708 | } |
|
|
709 | |
|
|
710 | static void |
|
|
711 | stack_put (coro_stack *stack) |
|
|
712 | { |
|
|
713 | ++cctx_idle; |
|
|
714 | stack->next = stack_first; |
|
|
715 | stack_first = stack; |
|
|
716 | } |
|
|
717 | |
|
|
718 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
719 | static void NOINLINE |
664 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
720 | transfer (struct coro *prev, struct coro *next, int flags) |
665 | { |
721 | { |
666 | dSP; |
|
|
667 | dSTACKLEVEL; |
722 | dSTACKLEVEL; |
668 | |
723 | |
|
|
724 | /* sometimes transfer is only called to set idle_sp */ |
|
|
725 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
726 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
669 | if (prev != next) |
727 | else if (prev != next) |
670 | { |
728 | { |
|
|
729 | coro_stack *prev__stack; |
|
|
730 | |
|
|
731 | LOCK; |
|
|
732 | |
671 | if (next->mainstack) |
733 | if (next->mainstack) |
672 | { |
734 | { |
|
|
735 | /* coroutine already started */ |
673 | SAVE (prev, flags); |
736 | SAVE (prev, flags); |
674 | LOAD (next); |
737 | LOAD (next); |
675 | |
|
|
676 | /* mark this state as in-use */ |
|
|
677 | next->mainstack = 0; |
|
|
678 | next->tmps_ix = -2; |
|
|
679 | |
|
|
680 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
681 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
682 | { |
|
|
683 | if (!prev->stack) |
|
|
684 | allocate_stack (prev, 0); |
|
|
685 | else if (prev->cursp != stacklevel |
|
|
686 | && prev->stack->usecnt > 1) |
|
|
687 | { |
|
|
688 | prev->gencnt = ++prev->stack->gencnt; |
|
|
689 | prev->stack->usecnt = 1; |
|
|
690 | } |
|
|
691 | |
|
|
692 | /* has our stack been invalidated? */ |
|
|
693 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
694 | { |
|
|
695 | deallocate_stack (next); |
|
|
696 | allocate_stack (next, 1); |
|
|
697 | coro_create (&(next->stack->cctx), |
|
|
698 | continue_coro, (void *)next, |
|
|
699 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
700 | } |
|
|
701 | |
|
|
702 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
703 | } |
|
|
704 | |
|
|
705 | } |
738 | } |
706 | else if (next->tmps_ix == -2) |
|
|
707 | croak ("tried to transfer to running coroutine"); |
|
|
708 | else |
739 | else |
709 | { |
740 | { |
|
|
741 | /* need to start coroutine */ |
710 | SAVE (prev, -1); /* first get rid of the old state */ |
742 | /* first get rid of the old state */ |
711 | |
743 | SAVE (prev, -1); |
712 | if (flags & TRANSFER_SAVE_CCTXT) |
744 | /* setup coroutine call */ |
713 | { |
|
|
714 | if (!prev->stack) |
|
|
715 | allocate_stack (prev, 0); |
|
|
716 | |
|
|
717 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
718 | { |
|
|
719 | setup_coro (next); |
|
|
720 | |
|
|
721 | prev->stack->refcnt++; |
|
|
722 | prev->stack->usecnt++; |
|
|
723 | next->stack = prev->stack; |
|
|
724 | next->gencnt = prev->gencnt; |
|
|
725 | } |
|
|
726 | else |
|
|
727 | { |
|
|
728 | allocate_stack (next, 1); |
|
|
729 | coro_create (&(next->stack->cctx), |
|
|
730 | setup_coro, (void *)next, |
|
|
731 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
732 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
733 | } |
|
|
734 | } |
|
|
735 | else |
|
|
736 | setup_coro (next); |
745 | setup_coro (next); |
|
|
746 | /* need a stack */ |
|
|
747 | next->stack = 0; |
737 | } |
748 | } |
|
|
749 | |
|
|
750 | if (!prev->stack) |
|
|
751 | /* create a new empty context */ |
|
|
752 | Newz (0, prev->stack, 1, coro_stack); |
|
|
753 | |
|
|
754 | prev__stack = prev->stack; |
|
|
755 | |
|
|
756 | /* possibly "free" the stack */ |
|
|
757 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
758 | { |
|
|
759 | stack_put (prev__stack); |
|
|
760 | prev->stack = 0; |
|
|
761 | } |
|
|
762 | |
|
|
763 | if (!next->stack) |
|
|
764 | next->stack = stack_get (); |
|
|
765 | |
|
|
766 | if (prev__stack != next->stack) |
|
|
767 | { |
|
|
768 | prev__stack->top_env = PL_top_env; |
|
|
769 | PL_top_env = next->stack->top_env; |
|
|
770 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
771 | } |
|
|
772 | |
|
|
773 | free_coro_mortal (); |
|
|
774 | |
|
|
775 | UNLOCK; |
738 | } |
776 | } |
739 | |
|
|
740 | next->cursp = stacklevel; |
|
|
741 | } |
777 | } |
|
|
778 | |
|
|
779 | struct transfer_args |
|
|
780 | { |
|
|
781 | struct coro *prev, *next; |
|
|
782 | int flags; |
|
|
783 | }; |
|
|
784 | |
|
|
785 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
786 | |
|
|
787 | static void |
|
|
788 | coro_state_destroy (struct coro *coro) |
|
|
789 | { |
|
|
790 | if (coro->refcnt--) |
|
|
791 | return; |
|
|
792 | |
|
|
793 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
794 | { |
|
|
795 | struct coro temp; |
|
|
796 | |
|
|
797 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
798 | LOAD (coro); |
|
|
799 | |
|
|
800 | coro_destroy_stacks (); |
|
|
801 | |
|
|
802 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
803 | |
|
|
804 | coro->mainstack = 0; |
|
|
805 | } |
|
|
806 | |
|
|
807 | stack_free (coro->stack); |
|
|
808 | SvREFCNT_dec (coro->args); |
|
|
809 | Safefree (coro); |
|
|
810 | } |
|
|
811 | |
|
|
812 | static int |
|
|
813 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
|
|
814 | { |
|
|
815 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
816 | mg->mg_ptr = 0; |
|
|
817 | |
|
|
818 | coro_state_destroy (coro); |
|
|
819 | |
|
|
820 | return 0; |
|
|
821 | } |
|
|
822 | |
|
|
823 | static int |
|
|
824 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
825 | { |
|
|
826 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
827 | |
|
|
828 | ++coro->refcnt; |
|
|
829 | |
|
|
830 | return 0; |
|
|
831 | } |
|
|
832 | |
|
|
833 | static MGVTBL coro_state_vtbl = { |
|
|
834 | 0, 0, 0, 0, |
|
|
835 | coro_state_clear, |
|
|
836 | 0, |
|
|
837 | #ifdef MGf_DUP |
|
|
838 | coro_state_dup, |
|
|
839 | #else |
|
|
840 | # define MGf_DUP 0 |
|
|
841 | #endif |
|
|
842 | }; |
742 | |
843 | |
743 | static struct coro * |
844 | static struct coro * |
744 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
845 | SvSTATE (SV *coro) |
745 | { |
846 | { |
746 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
847 | HV *stash; |
|
|
848 | MAGIC *mg; |
|
|
849 | |
|
|
850 | if (SvROK (coro)) |
|
|
851 | coro = SvRV (coro); |
|
|
852 | |
|
|
853 | stash = SvSTASH (coro); |
|
|
854 | if (stash != coro_stash && stash != coro_state_stash) |
747 | { |
855 | { |
748 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
856 | /* very slow, but rare, check */ |
749 | |
857 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
750 | if (!he) |
858 | croak ("Coro::State object required"); |
751 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
752 | |
|
|
753 | arg = HeVAL(he); |
|
|
754 | } |
859 | } |
755 | |
|
|
756 | /* must also be changed inside Coro::Cont::yield */ |
|
|
757 | if (SvROK(arg) && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
758 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
759 | |
860 | |
760 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
861 | mg = SvMAGIC (coro); |
761 | /*NORETURN*/ |
862 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
863 | return (struct coro *)mg->mg_ptr; |
762 | } |
864 | } |
763 | |
865 | |
764 | static void |
866 | static void |
|
|
867 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
868 | { |
|
|
869 | ta->prev = SvSTATE (prev); |
|
|
870 | ta->next = SvSTATE (next); |
|
|
871 | ta->flags = flags; |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
765 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
875 | api_transfer (SV *prev, SV *next, int flags) |
766 | { |
876 | { |
767 | transfer(aTHX_ |
877 | dTHX; |
768 | sv_to_coro (prev, "Coro::transfer", "prev"), |
878 | struct transfer_args ta; |
769 | sv_to_coro (next, "Coro::transfer", "next"), |
879 | |
770 | flags); |
880 | prepare_transfer (&ta, prev, next, flags); |
|
|
881 | TRANSFER (ta); |
771 | } |
882 | } |
772 | |
883 | |
773 | /** Coro ********************************************************************/ |
884 | /** Coro ********************************************************************/ |
774 | |
885 | |
775 | #define PRIO_MAX 3 |
886 | #define PRIO_MAX 3 |
… | |
… | |
779 | #define PRIO_IDLE -3 |
890 | #define PRIO_IDLE -3 |
780 | #define PRIO_MIN -4 |
891 | #define PRIO_MIN -4 |
781 | |
892 | |
782 | /* for Coro.pm */ |
893 | /* for Coro.pm */ |
783 | static GV *coro_current, *coro_idle; |
894 | static GV *coro_current, *coro_idle; |
784 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
895 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
785 | static int coro_nready; |
896 | static int coro_nready; |
786 | |
897 | |
787 | static void |
898 | static void |
788 | coro_enq (SV *sv) |
899 | coro_enq (SV *sv) |
789 | { |
900 | { |
790 | if (SvROK (sv)) |
901 | int prio; |
791 | { |
902 | |
792 | SV *hv = SvRV (sv); |
|
|
793 | if (SvTYPE (hv) == SVt_PVHV) |
903 | if (SvTYPE (sv) != SVt_PVHV) |
794 | { |
|
|
795 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
|
|
796 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
797 | |
|
|
798 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
799 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
800 | : prio; |
|
|
801 | |
|
|
802 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
803 | coro_nready++; |
|
|
804 | |
|
|
805 | return; |
|
|
806 | } |
|
|
807 | } |
|
|
808 | |
|
|
809 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
904 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
905 | |
|
|
906 | prio = SvSTATE (sv)->prio; |
|
|
907 | |
|
|
908 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
909 | coro_nready++; |
810 | } |
910 | } |
811 | |
911 | |
812 | static SV * |
912 | static SV * |
813 | coro_deq (int min_prio) |
913 | coro_deq (int min_prio) |
814 | { |
914 | { |
… | |
… | |
817 | min_prio -= PRIO_MIN; |
917 | min_prio -= PRIO_MIN; |
818 | if (min_prio < 0) |
918 | if (min_prio < 0) |
819 | min_prio = 0; |
919 | min_prio = 0; |
820 | |
920 | |
821 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
921 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
822 | if (av_len (coro_ready[prio]) >= 0) |
922 | if (AvFILLp (coro_ready [prio]) >= 0) |
823 | { |
923 | { |
824 | coro_nready--; |
924 | coro_nready--; |
825 | return av_shift (coro_ready[prio]); |
925 | return av_shift (coro_ready [prio]); |
826 | } |
926 | } |
827 | |
927 | |
828 | return 0; |
928 | return 0; |
829 | } |
929 | } |
830 | |
930 | |
831 | static void |
931 | static void |
832 | api_ready (SV *coro) |
932 | api_ready (SV *coro) |
833 | { |
933 | { |
|
|
934 | dTHX; |
|
|
935 | |
|
|
936 | if (SvROK (coro)) |
|
|
937 | coro = SvRV (coro); |
|
|
938 | |
|
|
939 | LOCK; |
834 | coro_enq (SvREFCNT_inc (coro)); |
940 | coro_enq (SvREFCNT_inc (coro)); |
|
|
941 | UNLOCK; |
835 | } |
942 | } |
836 | |
943 | |
837 | static void |
944 | static void |
838 | api_schedule (int cede) |
945 | prepare_schedule (struct transfer_args *ta) |
839 | { |
946 | { |
840 | SV *prev, *next; |
947 | SV *current, *prev, *next; |
841 | |
948 | |
842 | prev = GvSV (coro_current); |
949 | current = GvSV (coro_current); |
843 | |
950 | |
844 | if (cede) |
951 | for (;;) |
845 | coro_enq (SvREFCNT_inc (prev)); |
952 | { |
846 | |
953 | LOCK; |
847 | next = coro_deq (PRIO_MIN); |
954 | next = coro_deq (PRIO_MIN); |
|
|
955 | UNLOCK; |
848 | |
956 | |
849 | if (!next) |
957 | if (next) |
850 | next = SvREFCNT_inc (GvSV (coro_idle)); |
958 | break; |
851 | |
959 | |
852 | GvSV (coro_current) = SvREFCNT_inc (next); |
960 | { |
853 | transfer (aTHX_ |
961 | dSP; |
854 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
962 | |
855 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
963 | ENTER; |
856 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
964 | SAVETMPS; |
857 | SvREFCNT_dec (next); |
965 | |
858 | SvREFCNT_dec (prev); |
966 | PUSHMARK (SP); |
|
|
967 | PUTBACK; |
|
|
968 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
969 | |
|
|
970 | FREETMPS; |
|
|
971 | LEAVE; |
|
|
972 | } |
|
|
973 | } |
|
|
974 | |
|
|
975 | prev = SvRV (current); |
|
|
976 | SvRV (current) = next; |
|
|
977 | |
|
|
978 | /* free this only after the transfer */ |
|
|
979 | LOCK; |
|
|
980 | free_coro_mortal (); |
|
|
981 | UNLOCK; |
|
|
982 | coro_mortal = prev; |
|
|
983 | |
|
|
984 | ta->prev = SvSTATE (prev); |
|
|
985 | ta->next = SvSTATE (next); |
|
|
986 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
987 | } |
|
|
988 | |
|
|
989 | static void |
|
|
990 | prepare_cede (struct transfer_args *ta) |
|
|
991 | { |
|
|
992 | LOCK; |
|
|
993 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
994 | UNLOCK; |
|
|
995 | |
|
|
996 | prepare_schedule (ta); |
|
|
997 | } |
|
|
998 | |
|
|
999 | static void |
|
|
1000 | api_schedule (void) |
|
|
1001 | { |
|
|
1002 | dTHX; |
|
|
1003 | struct transfer_args ta; |
|
|
1004 | |
|
|
1005 | prepare_schedule (&ta); |
|
|
1006 | TRANSFER (ta); |
|
|
1007 | } |
|
|
1008 | |
|
|
1009 | static void |
|
|
1010 | api_cede (void) |
|
|
1011 | { |
|
|
1012 | dTHX; |
|
|
1013 | struct transfer_args ta; |
|
|
1014 | |
|
|
1015 | prepare_cede (&ta); |
|
|
1016 | TRANSFER (ta); |
859 | } |
1017 | } |
860 | |
1018 | |
861 | MODULE = Coro::State PACKAGE = Coro::State |
1019 | MODULE = Coro::State PACKAGE = Coro::State |
862 | |
1020 | |
863 | PROTOTYPES: ENABLE |
1021 | PROTOTYPES: DISABLE |
864 | |
1022 | |
865 | BOOT: |
1023 | BOOT: |
866 | { /* {} necessary for stoopid perl-5.6.x */ |
1024 | { |
867 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1025 | #ifdef USE_ITHREADS |
868 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1026 | MUTEX_INIT (&coro_mutex); |
|
|
1027 | #endif |
|
|
1028 | BOOT_PAGESIZE; |
|
|
1029 | |
869 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1030 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
870 | |
1031 | |
871 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1032 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
872 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1033 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
873 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1034 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
874 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
875 | |
|
|
876 | if (!padlist_cache) |
|
|
877 | padlist_cache = newHV (); |
|
|
878 | |
1035 | |
879 | main_mainstack = PL_mainstack; |
1036 | main_mainstack = PL_mainstack; |
880 | |
1037 | |
881 | coroapi.ver = CORO_API_VERSION; |
1038 | coroapi.ver = CORO_API_VERSION; |
882 | coroapi.transfer = api_transfer; |
1039 | coroapi.transfer = api_transfer; |
883 | } |
|
|
884 | |
1040 | |
885 | Coro::State |
1041 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
886 | _newprocess(args) |
1042 | } |
887 | SV * args |
1043 | |
888 | PROTOTYPE: $ |
1044 | SV * |
|
|
1045 | new (char *klass, ...) |
889 | CODE: |
1046 | CODE: |
890 | Coro__State coro; |
1047 | { |
|
|
1048 | struct coro *coro; |
|
|
1049 | HV *hv; |
|
|
1050 | int i; |
891 | |
1051 | |
892 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
893 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
894 | |
|
|
895 | New (0, coro, 1, struct coro); |
1052 | Newz (0, coro, 1, struct coro); |
|
|
1053 | coro->args = newAV (); |
896 | |
1054 | |
897 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1055 | hv = newHV (); |
|
|
1056 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1057 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1058 | |
|
|
1059 | for (i = 1; i < items; i++) |
|
|
1060 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1061 | |
898 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1062 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
899 | coro->stack = 0; |
1063 | /*coro->stack = 0;*/ |
900 | |
1064 | } |
901 | RETVAL = coro; |
|
|
902 | OUTPUT: |
1065 | OUTPUT: |
903 | RETVAL |
1066 | RETVAL |
904 | |
1067 | |
905 | void |
1068 | void |
906 | transfer(prev, next, flags) |
1069 | _set_stacklevel (...) |
907 | Coro::State_or_hashref prev |
1070 | ALIAS: |
908 | Coro::State_or_hashref next |
1071 | Coro::State::transfer = 1 |
909 | int flags |
1072 | Coro::schedule = 2 |
910 | PROTOTYPE: @ |
1073 | Coro::cede = 3 |
|
|
1074 | Coro::Cont::yield = 4 |
911 | CODE: |
1075 | CODE: |
912 | PUTBACK; |
1076 | { |
913 | transfer (aTHX_ prev, next, flags); |
1077 | struct transfer_args ta; |
914 | SPAGAIN; |
1078 | |
|
|
1079 | switch (ix) |
|
|
1080 | { |
|
|
1081 | case 0: |
|
|
1082 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1083 | ta.next = 0; |
|
|
1084 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1085 | break; |
|
|
1086 | |
|
|
1087 | case 1: |
|
|
1088 | if (items != 3) |
|
|
1089 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1090 | |
|
|
1091 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1092 | break; |
|
|
1093 | |
|
|
1094 | case 2: |
|
|
1095 | prepare_schedule (&ta); |
|
|
1096 | break; |
|
|
1097 | |
|
|
1098 | case 3: |
|
|
1099 | prepare_cede (&ta); |
|
|
1100 | break; |
|
|
1101 | |
|
|
1102 | case 4: |
|
|
1103 | { |
|
|
1104 | SV *yieldstack; |
|
|
1105 | SV *sv; |
|
|
1106 | AV *defav = GvAV (PL_defgv); |
|
|
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 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1122 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1123 | ta.flags = 0; |
|
|
1124 | SvREFCNT_dec (sv); |
|
|
1125 | } |
|
|
1126 | break; |
|
|
1127 | |
|
|
1128 | } |
|
|
1129 | |
|
|
1130 | TRANSFER (ta); |
|
|
1131 | } |
915 | |
1132 | |
916 | void |
1133 | void |
917 | DESTROY(coro) |
1134 | _clone_state_from (SV *dst, SV *src) |
918 | Coro::State coro |
1135 | CODE: |
919 | CODE: |
1136 | { |
|
|
1137 | struct coro *coro_src = SvSTATE (src); |
920 | |
1138 | |
921 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1139 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
922 | { |
|
|
923 | struct coro temp; |
|
|
924 | |
1140 | |
925 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1141 | ++coro_src->refcnt; |
926 | LOAD(aTHX_ coro); |
1142 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
927 | |
1143 | } |
928 | destroy_stacks (aTHX); |
|
|
929 | |
|
|
930 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
931 | |
|
|
932 | coro->mainstack = 0; |
|
|
933 | } |
|
|
934 | |
|
|
935 | deallocate_stack (coro); |
|
|
936 | |
|
|
937 | Safefree (coro); |
|
|
938 | |
1144 | |
939 | void |
1145 | void |
940 | flush() |
|
|
941 | CODE: |
|
|
942 | #ifdef MAY_FLUSH |
|
|
943 | flush_padlist_cache (); |
|
|
944 | #endif |
|
|
945 | |
|
|
946 | void |
|
|
947 | _exit(code) |
1146 | _exit (code) |
948 | int code |
1147 | int code |
949 | PROTOTYPE: $ |
1148 | PROTOTYPE: $ |
950 | CODE: |
1149 | CODE: |
951 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
952 | _exit (code); |
1150 | _exit (code); |
953 | #else |
|
|
954 | signal (SIGTERM, SIG_DFL); |
|
|
955 | raise (SIGTERM); |
|
|
956 | exit (code); |
|
|
957 | #endif |
|
|
958 | |
|
|
959 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
960 | |
|
|
961 | # this is slightly dirty (should expose a c-level api) |
|
|
962 | |
|
|
963 | void |
|
|
964 | yield(...) |
|
|
965 | PROTOTYPE: @ |
|
|
966 | CODE: |
|
|
967 | static SV *returnstk; |
|
|
968 | SV *sv; |
|
|
969 | AV *defav = GvAV (PL_defgv); |
|
|
970 | struct coro *prev, *next; |
|
|
971 | |
|
|
972 | if (!returnstk) |
|
|
973 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
974 | |
|
|
975 | /* set up @_ -- ugly */ |
|
|
976 | av_clear (defav); |
|
|
977 | av_fill (defav, items - 1); |
|
|
978 | while (items--) |
|
|
979 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
980 | |
|
|
981 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
982 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
983 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
984 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
985 | SvREFCNT_dec (sv); |
|
|
986 | |
|
|
987 | transfer(aTHX_ prev, next, 0); |
|
|
988 | |
1151 | |
989 | MODULE = Coro::State PACKAGE = Coro |
1152 | MODULE = Coro::State PACKAGE = Coro |
990 | |
1153 | |
991 | # this is slightly dirty (should expose a c-level api) |
|
|
992 | |
|
|
993 | BOOT: |
1154 | BOOT: |
994 | { |
1155 | { |
995 | int i; |
1156 | int i; |
|
|
1157 | |
996 | HV *stash = gv_stashpv ("Coro", TRUE); |
1158 | coro_stash = gv_stashpv ("Coro", TRUE); |
997 | |
1159 | |
998 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1160 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
999 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1161 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1000 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1162 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1001 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1163 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1002 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1164 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1003 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1165 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1004 | |
1166 | |
1005 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1167 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1006 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1168 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1007 | |
1169 | |
1008 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1170 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1010 | |
1172 | |
1011 | { |
1173 | { |
1012 | SV *sv = perl_get_sv("Coro::API", 1); |
1174 | SV *sv = perl_get_sv("Coro::API", 1); |
1013 | |
1175 | |
1014 | coroapi.schedule = api_schedule; |
1176 | coroapi.schedule = api_schedule; |
|
|
1177 | coroapi.cede = api_cede; |
1015 | coroapi.ready = api_ready; |
1178 | coroapi.ready = api_ready; |
1016 | coroapi.nready = &coro_nready; |
1179 | coroapi.nready = &coro_nready; |
1017 | coroapi.current = coro_current; |
1180 | coroapi.current = coro_current; |
1018 | |
1181 | |
1019 | GCoroAPI = &coroapi; |
1182 | GCoroAPI = &coroapi; |
1020 | sv_setiv(sv, (IV)&coroapi); |
1183 | sv_setiv (sv, (IV)&coroapi); |
1021 | SvREADONLY_on(sv); |
1184 | SvREADONLY_on (sv); |
1022 | } |
1185 | } |
1023 | } |
1186 | } |
1024 | |
1187 | |
|
|
1188 | int |
|
|
1189 | prio (Coro::State coro, int newprio = 0) |
|
|
1190 | ALIAS: |
|
|
1191 | nice = 1 |
|
|
1192 | CODE: |
|
|
1193 | { |
|
|
1194 | RETVAL = coro->prio; |
|
|
1195 | |
|
|
1196 | if (items > 1) |
|
|
1197 | { |
|
|
1198 | if (ix) |
|
|
1199 | newprio += coro->prio; |
|
|
1200 | |
|
|
1201 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1202 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1203 | |
|
|
1204 | coro->prio = newprio; |
|
|
1205 | } |
|
|
1206 | } |
|
|
1207 | |
1025 | void |
1208 | void |
1026 | ready(self) |
1209 | ready (SV *self) |
1027 | SV * self |
1210 | PROTOTYPE: $ |
1028 | CODE: |
1211 | CODE: |
1029 | api_ready (self); |
1212 | api_ready (self); |
1030 | |
1213 | |
1031 | int |
1214 | int |
1032 | nready(...) |
1215 | nready (...) |
1033 | PROTOTYPE: |
1216 | PROTOTYPE: |
1034 | CODE: |
1217 | CODE: |
1035 | RETVAL = coro_nready; |
1218 | RETVAL = coro_nready; |
1036 | OUTPUT: |
1219 | OUTPUT: |
1037 | RETVAL |
1220 | RETVAL |
1038 | |
1221 | |
|
|
1222 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1223 | |
|
|
1224 | SV * |
|
|
1225 | _get_state () |
|
|
1226 | CODE: |
|
|
1227 | { |
|
|
1228 | struct { |
|
|
1229 | int errorno; |
|
|
1230 | int laststype; |
|
|
1231 | int laststatval; |
|
|
1232 | Stat_t statcache; |
|
|
1233 | } data; |
|
|
1234 | |
|
|
1235 | data.errorno = errno; |
|
|
1236 | data.laststype = PL_laststype; |
|
|
1237 | data.laststatval = PL_laststatval; |
|
|
1238 | data.statcache = PL_statcache; |
|
|
1239 | |
|
|
1240 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1241 | } |
|
|
1242 | OUTPUT: |
|
|
1243 | RETVAL |
|
|
1244 | |
1039 | void |
1245 | void |
1040 | schedule(...) |
1246 | _set_state (char *data_) |
1041 | PROTOTYPE: |
1247 | PROTOTYPE: $ |
1042 | ALIAS: |
|
|
1043 | cede = 1 |
|
|
1044 | CODE: |
1248 | CODE: |
1045 | api_schedule (ix); |
1249 | { |
|
|
1250 | struct { |
|
|
1251 | int errorno; |
|
|
1252 | int laststype; |
|
|
1253 | int laststatval; |
|
|
1254 | Stat_t statcache; |
|
|
1255 | } *data = (void *)data_; |
1046 | |
1256 | |
|
|
1257 | errno = data->errorno; |
|
|
1258 | PL_laststype = data->laststype; |
|
|
1259 | PL_laststatval = data->laststatval; |
|
|
1260 | PL_statcache = data->statcache; |
|
|
1261 | } |