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1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
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4 | |
1 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
2 | #include "perl.h" |
6 | #include "perl.h" |
3 | #include "XSUB.h" |
7 | #include "XSUB.h" |
4 | |
8 | |
5 | #include "libcoro/coro.c" |
9 | #include "patchlevel.h" |
6 | |
10 | |
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11 | #if PERL_VERSION < 6 |
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12 | # ifndef PL_ppaddr |
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13 | # define PL_ppaddr ppaddr |
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14 | # endif |
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15 | # ifndef call_sv |
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16 | # define call_sv perl_call_sv |
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17 | # endif |
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18 | # ifndef get_sv |
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19 | # define get_sv perl_get_sv |
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20 | # endif |
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21 | # ifndef get_cv |
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22 | # define get_cv perl_get_cv |
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23 | # endif |
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24 | # ifndef IS_PADGV |
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25 | # define IS_PADGV(v) 0 |
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26 | # endif |
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27 | # ifndef IS_PADCONST |
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28 | # define IS_PADCONST(v) 0 |
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29 | # endif |
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30 | #endif |
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31 | |
7 | #include <signal.h> |
32 | #include <stdio.h> |
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33 | #include <errno.h> |
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34 | |
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35 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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36 | # undef STACKGUARD |
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37 | #endif |
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38 | |
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39 | #ifndef STACKGUARD |
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40 | # define STACKGUARD 0 |
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41 | #endif |
8 | |
42 | |
9 | #ifdef HAVE_MMAP |
43 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
44 | # include <unistd.h> |
11 | # include <sys/mman.h> |
45 | # include <sys/mman.h> |
12 | # ifndef MAP_ANONYMOUS |
46 | # ifndef MAP_ANONYMOUS |
… | |
… | |
14 | # define MAP_ANONYMOUS MAP_ANON |
48 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
49 | # else |
16 | # undef HAVE_MMAP |
50 | # undef HAVE_MMAP |
17 | # endif |
51 | # endif |
18 | # endif |
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 |
19 | #endif |
60 | # endif |
20 | |
61 | #endif |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
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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 | |
62 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
63 | /* 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 |
64 | * to the current C stack pointer. Its property is that it changes with each call |
28 | * and should be unique. */ |
65 | * and should be unique. */ |
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66 | #define dSTACKLEVEL int stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
67 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
68 | |
31 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
32 | |
70 | |
33 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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34 | |
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35 | #include "CoroAPI.h" |
71 | #include "CoroAPI.h" |
36 | |
72 | |
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73 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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74 | |
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75 | #ifdef USE_ITHREADS |
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76 | static perl_mutex coro_mutex; |
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77 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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78 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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79 | #else |
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80 | # define LOCK (void)0 |
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81 | # define UNLOCK (void)0 |
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82 | #endif |
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83 | |
37 | static struct CoroAPI coroapi; |
84 | static struct CoroAPI coroapi; |
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85 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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86 | static HV *coro_state_stash, *coro_stash; |
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87 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
88 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
89 | /* this is a structure representing a c-level coroutine */ |
40 | typedef struct { |
90 | typedef struct coro_stack { |
41 | int refcnt; /* pointer reference counter */ |
91 | struct coro_stack *next; |
42 | int usecnt; /* shared by how many coroutines */ |
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43 | int gencnt; /* generation counter */ |
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44 | |
92 | |
45 | coro_context cctx; |
93 | /* the stack */ |
46 | |
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47 | void *sptr; |
94 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
95 | long ssize; /* positive == mmap, otherwise malloc */ |
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96 | |
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97 | /* cpu state */ |
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98 | void *idle_sp; /* original stacklevel when coroutine was created */ |
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99 | JMPENV *top_env; |
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100 | coro_context cctx; |
49 | } coro_stack; |
101 | } coro_stack; |
50 | |
102 | |
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103 | /* the (fake) coro_stack representing the main program */ |
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104 | static coro_stack *main_stack; |
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105 | |
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106 | /* this is a structure representing a perl-level coroutine */ |
51 | struct coro { |
107 | struct coro { |
52 | /* the optional C context */ |
108 | /* the c coroutine allocated to this perl coroutine, if any */ |
53 | coro_stack *stack; |
109 | coro_stack *stack; |
54 | void *cursp; |
110 | |
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111 | /* data associated with this coroutine (initial args) */ |
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112 | AV *args; |
55 | int gencnt; |
113 | int refcnt; |
56 | |
114 | |
57 | /* optionally saved, might be zero */ |
115 | /* optionally saved, might be zero */ |
58 | AV *defav; |
116 | AV *defav; |
59 | SV *defsv; |
117 | SV *defsv; |
60 | SV *errsv; |
118 | SV *errsv; |
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68 | AV *curstack; |
126 | AV *curstack; |
69 | AV *mainstack; |
127 | AV *mainstack; |
70 | SV **stack_sp; |
128 | SV **stack_sp; |
71 | OP *op; |
129 | OP *op; |
72 | SV **curpad; |
130 | SV **curpad; |
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131 | AV *comppad; |
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132 | CV *compcv; |
73 | SV **stack_base; |
133 | SV **stack_base; |
74 | SV **stack_max; |
134 | SV **stack_max; |
75 | SV **tmps_stack; |
135 | SV **tmps_stack; |
76 | I32 tmps_floor; |
136 | I32 tmps_floor; |
77 | I32 tmps_ix; |
137 | I32 tmps_ix; |
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86 | I32 savestack_ix; |
146 | I32 savestack_ix; |
87 | I32 savestack_max; |
147 | I32 savestack_max; |
88 | OP **retstack; |
148 | OP **retstack; |
89 | I32 retstack_ix; |
149 | I32 retstack_ix; |
90 | I32 retstack_max; |
150 | I32 retstack_max; |
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151 | PMOP *curpm; |
91 | COP *curcop; |
152 | COP *curcop; |
92 | JMPENV *top_env; |
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93 | |
153 | |
94 | /* data associated with this coroutine (initial args) */ |
154 | /* coro process data */ |
95 | AV *args; |
155 | int prio; |
96 | }; |
156 | }; |
97 | |
157 | |
98 | typedef struct coro *Coro__State; |
158 | typedef struct coro *Coro__State; |
99 | typedef struct coro *Coro__State_or_hashref; |
159 | typedef struct coro *Coro__State_or_hashref; |
100 | |
160 | |
101 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
161 | static AV * |
102 | static HV *coro_state_stash; |
162 | coro_clone_padlist (pTHX_ CV *cv) |
103 | static SV *ucoro_state_sv; |
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104 | static U32 ucoro_state_hash; |
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105 | static HV *padlist_cache; |
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106 | static SV *coro_mortal; /* will be freed after next transfer */ |
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107 | |
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108 | /* mostly copied from op.c:cv_clone2 */ |
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109 | STATIC AV * |
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110 | clone_padlist (AV *protopadlist) |
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111 | { |
163 | { |
112 | AV *av; |
164 | AV *padlist = CvPADLIST (cv); |
113 | I32 ix; |
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114 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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115 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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116 | SV **pname = AvARRAY (protopad_name); |
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117 | SV **ppad = AvARRAY (protopad); |
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118 | I32 fname = AvFILLp (protopad_name); |
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119 | I32 fpad = AvFILLp (protopad); |
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120 | AV *newpadlist, *newpad_name, *newpad; |
165 | AV *newpadlist, *newpad; |
121 | SV **npad; |
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122 | |
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123 | newpad_name = newAV (); |
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124 | for (ix = fname; ix >= 0; ix--) |
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125 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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126 | |
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127 | newpad = newAV (); |
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128 | av_fill (newpad, AvFILLp (protopad)); |
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129 | npad = AvARRAY (newpad); |
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130 | |
166 | |
131 | newpadlist = newAV (); |
167 | newpadlist = newAV (); |
132 | AvREAL_off (newpadlist); |
168 | AvREAL_off (newpadlist); |
133 | av_store (newpadlist, 0, (SV *) newpad_name); |
169 | #if PERL_VERSION < 9 |
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170 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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171 | #else |
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172 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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173 | #endif |
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174 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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175 | --AvFILLp (padlist); |
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176 | |
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177 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
134 | av_store (newpadlist, 1, (SV *) newpad); |
178 | av_store (newpadlist, 1, (SV *)newpad); |
135 | |
179 | |
136 | av = newAV (); /* will be @_ */ |
180 | return newpadlist; |
137 | av_extend (av, 0); |
181 | } |
138 | av_store (newpad, 0, (SV *) av); |
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139 | AvFLAGS (av) = AVf_REIFY; |
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140 | |
182 | |
141 | for (ix = fpad; ix > 0; ix--) |
183 | static void |
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184 | free_padlist (pTHX_ AV *padlist) |
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185 | { |
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186 | /* may be during global destruction */ |
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187 | if (SvREFCNT (padlist)) |
142 | { |
188 | { |
143 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
189 | I32 i = AvFILLp (padlist); |
144 | if (namesv && namesv != &PL_sv_undef) |
190 | while (i >= 0) |
145 | { |
191 | { |
146 | char *name = SvPVX (namesv); /* XXX */ |
192 | SV **svp = av_fetch (padlist, i--, FALSE); |
147 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
193 | if (svp) |
148 | { /* lexical from outside? */ |
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149 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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150 | } |
194 | { |
151 | else |
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152 | { /* our own lexical */ |
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153 | SV *sv; |
195 | SV *sv; |
154 | if (*name == '&') |
196 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
155 | sv = SvREFCNT_inc (ppad[ix]); |
197 | SvREFCNT_dec (sv); |
156 | else if (*name == '@') |
198 | |
157 | sv = (SV *) newAV (); |
199 | SvREFCNT_dec (*svp); |
158 | else if (*name == '%') |
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159 | sv = (SV *) newHV (); |
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160 | else |
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161 | sv = NEWSV (0, 0); |
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162 | if (!SvPADBUSY (sv)) |
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163 | SvPADMY_on (sv); |
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164 | npad[ix] = sv; |
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165 | } |
200 | } |
166 | } |
201 | } |
167 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
202 | |
168 | { |
203 | SvREFCNT_dec ((SV*)padlist); |
169 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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170 | } |
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171 | else |
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172 | { |
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173 | SV *sv = NEWSV (0, 0); |
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174 | SvPADTMP_on (sv); |
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175 | npad[ix] = sv; |
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176 | } |
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177 | } |
204 | } |
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205 | } |
178 | |
206 | |
179 | #if 0 /* return -ENOTUNDERSTOOD */ |
207 | static int |
180 | /* Now that vars are all in place, clone nested closures. */ |
208 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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209 | { |
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210 | AV *padlist; |
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211 | AV *av = (AV *)mg->mg_obj; |
181 | |
212 | |
182 | for (ix = fpad; ix > 0; ix--) { |
213 | /* casting is fun. */ |
183 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
214 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
184 | if (namesv |
215 | free_padlist (aTHX_ padlist); |
185 | && namesv != &PL_sv_undef |
216 | |
186 | && !(SvFLAGS(namesv) & SVf_FAKE) |
217 | SvREFCNT_dec (av); |
187 | && *SvPVX(namesv) == '&' |
218 | |
188 | && CvCLONE(ppad[ix])) |
219 | return 0; |
189 | { |
220 | } |
190 | CV *kid = cv_clone((CV*)ppad[ix]); |
221 | |
191 | SvREFCNT_dec(ppad[ix]); |
222 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
192 | CvCLONE_on(kid); |
223 | |
193 | SvPADMY_on(kid); |
224 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
194 | npad[ix] = (SV*)kid; |
225 | |
195 | } |
226 | /* the next two functions merely cache the padlists */ |
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227 | static void |
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228 | get_padlist (pTHX_ CV *cv) |
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229 | { |
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230 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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231 | |
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232 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
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233 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
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234 | else |
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235 | { |
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236 | #if 0 |
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237 | /* this should work - but it doesn't :( */ |
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238 | CV *cp = Perl_cv_clone (aTHX_ cv); |
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239 | CvPADLIST (cv) = CvPADLIST (cp); |
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240 | CvPADLIST (cp) = 0; |
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241 | SvREFCNT_dec (cp); |
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242 | #else |
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243 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
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244 | #endif |
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245 | } |
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246 | } |
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247 | |
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248 | static void |
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249 | put_padlist (pTHX_ CV *cv) |
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250 | { |
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251 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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252 | |
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253 | if (!mg) |
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254 | { |
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255 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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256 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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257 | mg->mg_virtual = &vtbl_coro; |
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258 | mg->mg_obj = (SV *)newAV (); |
196 | } |
259 | } |
197 | #endif |
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198 | |
260 | |
199 | return newpadlist; |
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200 | } |
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201 | |
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202 | #ifdef MAY_FLUSH |
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203 | STATIC void |
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204 | free_padlist (AV *padlist) |
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205 | { |
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206 | /* may be during global destruction */ |
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207 | if (SvREFCNT(padlist)) |
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208 | { |
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209 | I32 i = AvFILLp(padlist); |
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210 | while (i >= 0) |
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211 | { |
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212 | SV **svp = av_fetch(padlist, i--, FALSE); |
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213 | SV *sv = svp ? *svp : Nullsv; |
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214 | if (sv) |
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215 | SvREFCNT_dec(sv); |
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216 | } |
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217 | |
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218 | SvREFCNT_dec((SV*)padlist); |
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219 | } |
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220 | } |
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221 | #endif |
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222 | |
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223 | /* the next two functions merely cache the padlists */ |
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224 | STATIC void |
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225 | get_padlist (CV *cv) |
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226 | { |
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227 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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228 | |
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229 | if (he && AvFILLp ((AV *)*he) >= 0) |
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230 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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231 | else |
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232 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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233 | } |
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234 | |
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235 | STATIC void |
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236 | put_padlist (CV *cv) |
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237 | { |
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238 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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239 | |
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240 | if (SvTYPE (*he) != SVt_PVAV) |
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241 | { |
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242 | SvREFCNT_dec (*he); |
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243 | *he = (SV *)newAV (); |
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244 | } |
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245 | |
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246 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
261 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
247 | } |
262 | } |
248 | |
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249 | #ifdef MAY_FLUSH |
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250 | STATIC void |
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251 | flush_padlist_cache () |
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252 | { |
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253 | HV *hv = padlist_cache; |
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254 | padlist_cache = newHV (); |
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255 | |
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256 | if (hv_iterinit (hv)) |
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257 | { |
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258 | HE *he; |
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259 | AV *padlist; |
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260 | |
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261 | while (!!(he = hv_iternext (hv))) |
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262 | { |
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263 | AV *av = (AV *)HeVAL(he); |
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264 | |
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265 | /* casting is fun. */ |
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266 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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267 | free_padlist (padlist); |
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268 | } |
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269 | } |
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270 | |
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271 | SvREFCNT_dec (hv); |
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272 | } |
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273 | #endif |
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274 | |
263 | |
275 | #define SB do { |
264 | #define SB do { |
276 | #define SE } while (0) |
265 | #define SE } while (0) |
277 | |
266 | |
278 | #define LOAD(state) load_state(aTHX_ (state)); |
267 | #define LOAD(state) load_state(aTHX_ (state)); |
279 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
268 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
280 | |
269 | |
281 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
270 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
282 | |
271 | |
283 | static void |
272 | static void |
284 | load_state(pTHX_ Coro__State c) |
273 | load_state(pTHX_ Coro__State c) |
285 | { |
274 | { |
286 | PL_dowarn = c->dowarn; |
275 | PL_dowarn = c->dowarn; |
… | |
… | |
290 | PL_curstack = c->curstack; |
279 | PL_curstack = c->curstack; |
291 | PL_mainstack = c->mainstack; |
280 | PL_mainstack = c->mainstack; |
292 | PL_stack_sp = c->stack_sp; |
281 | PL_stack_sp = c->stack_sp; |
293 | PL_op = c->op; |
282 | PL_op = c->op; |
294 | PL_curpad = c->curpad; |
283 | PL_curpad = c->curpad; |
|
|
284 | PL_comppad = c->comppad; |
|
|
285 | PL_compcv = c->compcv; |
295 | PL_stack_base = c->stack_base; |
286 | PL_stack_base = c->stack_base; |
296 | PL_stack_max = c->stack_max; |
287 | PL_stack_max = c->stack_max; |
297 | PL_tmps_stack = c->tmps_stack; |
288 | PL_tmps_stack = c->tmps_stack; |
298 | PL_tmps_floor = c->tmps_floor; |
289 | PL_tmps_floor = c->tmps_floor; |
299 | PL_tmps_ix = c->tmps_ix; |
290 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
305 | PL_scopestack_ix = c->scopestack_ix; |
296 | PL_scopestack_ix = c->scopestack_ix; |
306 | PL_scopestack_max = c->scopestack_max; |
297 | PL_scopestack_max = c->scopestack_max; |
307 | PL_savestack = c->savestack; |
298 | PL_savestack = c->savestack; |
308 | PL_savestack_ix = c->savestack_ix; |
299 | PL_savestack_ix = c->savestack_ix; |
309 | PL_savestack_max = c->savestack_max; |
300 | PL_savestack_max = c->savestack_max; |
|
|
301 | #if PERL_VERSION < 9 |
310 | PL_retstack = c->retstack; |
302 | PL_retstack = c->retstack; |
311 | PL_retstack_ix = c->retstack_ix; |
303 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_max = c->retstack_max; |
304 | PL_retstack_max = c->retstack_max; |
|
|
305 | #endif |
|
|
306 | PL_curpm = c->curpm; |
313 | PL_curcop = c->curcop; |
307 | PL_curcop = c->curcop; |
314 | PL_top_env = c->top_env; |
|
|
315 | |
308 | |
316 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
309 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
317 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
310 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
318 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
311 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
319 | |
312 | |
… | |
… | |
326 | { |
319 | { |
327 | AV *padlist = (AV *)POPs; |
320 | AV *padlist = (AV *)POPs; |
328 | |
321 | |
329 | if (padlist) |
322 | if (padlist) |
330 | { |
323 | { |
331 | put_padlist (cv); /* mark this padlist as available */ |
324 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
332 | CvPADLIST(cv) = padlist; |
325 | CvPADLIST(cv) = padlist; |
333 | #ifdef USE_THREADS |
|
|
334 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
335 | #endif |
|
|
336 | } |
326 | } |
337 | |
327 | |
338 | ++CvDEPTH(cv); |
328 | ++CvDEPTH(cv); |
339 | } |
329 | } |
340 | |
330 | |
… | |
… | |
367 | if (CxTYPE(cx) == CXt_SUB) |
357 | if (CxTYPE(cx) == CXt_SUB) |
368 | { |
358 | { |
369 | CV *cv = cx->blk_sub.cv; |
359 | CV *cv = cx->blk_sub.cv; |
370 | if (CvDEPTH(cv)) |
360 | if (CvDEPTH(cv)) |
371 | { |
361 | { |
372 | #ifdef USE_THREADS |
|
|
373 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
374 | /*CvOWNER(cv) = 0;*/ |
|
|
375 | /*error must unlock this cv etc.. etc...*/ |
|
|
376 | #endif |
|
|
377 | EXTEND (SP, CvDEPTH(cv)*2); |
362 | EXTEND (SP, CvDEPTH(cv)*2); |
378 | |
363 | |
379 | while (--CvDEPTH(cv)) |
364 | while (--CvDEPTH(cv)) |
380 | { |
365 | { |
381 | /* this tells the restore code to increment CvDEPTH */ |
366 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
384 | } |
369 | } |
385 | |
370 | |
386 | PUSHs ((SV *)CvPADLIST(cv)); |
371 | PUSHs ((SV *)CvPADLIST(cv)); |
387 | PUSHs ((SV *)cv); |
372 | PUSHs ((SV *)cv); |
388 | |
373 | |
389 | get_padlist (cv); /* this is a monster */ |
374 | get_padlist (aTHX_ cv); |
390 | } |
375 | } |
391 | } |
376 | } |
|
|
377 | #ifdef CXt_FORMAT |
392 | else if (CxTYPE(cx) == CXt_FORMAT) |
378 | else if (CxTYPE(cx) == CXt_FORMAT) |
393 | { |
379 | { |
394 | /* I never used formats, so how should I know how these are implemented? */ |
380 | /* I never used formats, so how should I know how these are implemented? */ |
395 | /* my bold guess is as a simple, plain sub... */ |
381 | /* my bold guess is as a simple, plain sub... */ |
396 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
382 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
397 | } |
383 | } |
|
|
384 | #endif |
398 | } |
385 | } |
399 | |
386 | |
400 | if (top_si->si_type == PERLSI_MAIN) |
387 | if (top_si->si_type == PERLSI_MAIN) |
401 | break; |
388 | break; |
402 | |
389 | |
… | |
… | |
419 | c->curstack = PL_curstack; |
406 | c->curstack = PL_curstack; |
420 | c->mainstack = PL_mainstack; |
407 | c->mainstack = PL_mainstack; |
421 | c->stack_sp = PL_stack_sp; |
408 | c->stack_sp = PL_stack_sp; |
422 | c->op = PL_op; |
409 | c->op = PL_op; |
423 | c->curpad = PL_curpad; |
410 | c->curpad = PL_curpad; |
|
|
411 | c->comppad = PL_comppad; |
|
|
412 | c->compcv = PL_compcv; |
424 | c->stack_base = PL_stack_base; |
413 | c->stack_base = PL_stack_base; |
425 | c->stack_max = PL_stack_max; |
414 | c->stack_max = PL_stack_max; |
426 | c->tmps_stack = PL_tmps_stack; |
415 | c->tmps_stack = PL_tmps_stack; |
427 | c->tmps_floor = PL_tmps_floor; |
416 | c->tmps_floor = PL_tmps_floor; |
428 | c->tmps_ix = PL_tmps_ix; |
417 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
434 | c->scopestack_ix = PL_scopestack_ix; |
423 | c->scopestack_ix = PL_scopestack_ix; |
435 | c->scopestack_max = PL_scopestack_max; |
424 | c->scopestack_max = PL_scopestack_max; |
436 | c->savestack = PL_savestack; |
425 | c->savestack = PL_savestack; |
437 | c->savestack_ix = PL_savestack_ix; |
426 | c->savestack_ix = PL_savestack_ix; |
438 | c->savestack_max = PL_savestack_max; |
427 | c->savestack_max = PL_savestack_max; |
|
|
428 | #if PERL_VERSION < 9 |
439 | c->retstack = PL_retstack; |
429 | c->retstack = PL_retstack; |
440 | c->retstack_ix = PL_retstack_ix; |
430 | c->retstack_ix = PL_retstack_ix; |
441 | c->retstack_max = PL_retstack_max; |
431 | c->retstack_max = PL_retstack_max; |
|
|
432 | #endif |
|
|
433 | c->curpm = PL_curpm; |
442 | c->curcop = PL_curcop; |
434 | c->curcop = PL_curcop; |
443 | c->top_env = PL_top_env; |
|
|
444 | } |
435 | } |
445 | |
436 | |
446 | /* |
437 | /* |
447 | * allocate various perl stacks. This is an exact copy |
438 | * allocate various perl stacks. This is an exact copy |
448 | * of perl.c:init_stacks, except that it uses less memory |
439 | * of perl.c:init_stacks, except that it uses less memory |
449 | * on the assumption that coroutines do not usually need |
440 | * on the (sometimes correct) assumption that coroutines do |
450 | * a lot of stackspace. |
441 | * not usually need a lot of stackspace. |
451 | */ |
442 | */ |
452 | STATIC void |
443 | static void |
453 | coro_init_stacks (pTHX) |
444 | coro_init_stacks (pTHX) |
454 | { |
445 | { |
|
|
446 | LOCK; |
|
|
447 | |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
448 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
449 | PL_curstackinfo->si_type = PERLSI_MAIN; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
450 | PL_curstack = PL_curstackinfo->si_stack; |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
451 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
459 | |
452 | |
… | |
… | |
468 | |
461 | |
469 | New(54,PL_markstack,16,I32); |
462 | New(54,PL_markstack,16,I32); |
470 | PL_markstack_ptr = PL_markstack; |
463 | PL_markstack_ptr = PL_markstack; |
471 | PL_markstack_max = PL_markstack + 16; |
464 | PL_markstack_max = PL_markstack + 16; |
472 | |
465 | |
|
|
466 | #ifdef SET_MARK_OFFSET |
473 | SET_MARK_OFFSET; |
467 | SET_MARK_OFFSET; |
|
|
468 | #endif |
474 | |
469 | |
475 | New(54,PL_scopestack,16,I32); |
470 | New(54,PL_scopestack,16,I32); |
476 | PL_scopestack_ix = 0; |
471 | PL_scopestack_ix = 0; |
477 | PL_scopestack_max = 16; |
472 | PL_scopestack_max = 16; |
478 | |
473 | |
479 | New(54,PL_savestack,96,ANY); |
474 | New(54,PL_savestack,96,ANY); |
480 | PL_savestack_ix = 0; |
475 | PL_savestack_ix = 0; |
481 | PL_savestack_max = 96; |
476 | PL_savestack_max = 96; |
482 | |
477 | |
|
|
478 | #if PERL_VERSION < 9 |
483 | New(54,PL_retstack,8,OP*); |
479 | New(54,PL_retstack,8,OP*); |
484 | PL_retstack_ix = 0; |
480 | PL_retstack_ix = 0; |
485 | PL_retstack_max = 8; |
481 | PL_retstack_max = 8; |
|
|
482 | #endif |
|
|
483 | |
|
|
484 | UNLOCK; |
486 | } |
485 | } |
487 | |
486 | |
488 | /* |
487 | /* |
489 | * destroy the stacks, the callchain etc... |
488 | * destroy the stacks, the callchain etc... |
490 | * still there is a memleak of 128 bytes... |
|
|
491 | */ |
489 | */ |
492 | STATIC void |
490 | static void |
493 | destroy_stacks(pTHX) |
491 | destroy_stacks(pTHX) |
494 | { |
492 | { |
495 | if (!IN_DESTRUCT) |
493 | if (!IN_DESTRUCT) |
496 | { |
494 | { |
497 | /* is this ugly, I ask? */ |
495 | /* is this ugly, I ask? */ |
498 | while (PL_scopestack_ix) |
496 | LEAVE_SCOPE (0); |
499 | LEAVE; |
|
|
500 | |
497 | |
501 | /* sure it is, but more important: is it correct?? :/ */ |
498 | /* sure it is, but more important: is it correct?? :/ */ |
502 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
503 | FREETMPS; |
499 | FREETMPS; |
|
|
500 | |
|
|
501 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
504 | } |
502 | } |
505 | |
503 | |
506 | while (PL_curstackinfo->si_next) |
504 | while (PL_curstackinfo->si_next) |
507 | PL_curstackinfo = PL_curstackinfo->si_next; |
505 | PL_curstackinfo = PL_curstackinfo->si_next; |
508 | |
506 | |
509 | while (PL_curstackinfo) |
507 | while (PL_curstackinfo) |
510 | { |
508 | { |
511 | PERL_SI *p = PL_curstackinfo->si_prev; |
509 | PERL_SI *p = PL_curstackinfo->si_prev; |
512 | |
510 | |
513 | { |
511 | { /*D*//*remove*/ |
514 | dSP; |
512 | dSP; |
515 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
513 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
516 | PUTBACK; /* possibly superfluous */ |
514 | PUTBACK; /* possibly superfluous */ |
517 | } |
515 | } |
518 | |
516 | |
519 | if (!IN_DESTRUCT) |
517 | if (!IN_DESTRUCT) |
520 | { |
518 | { |
521 | dounwind(-1); |
519 | dounwind (-1);/*D*//*remove*/ |
522 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
520 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
523 | } |
521 | } |
524 | |
522 | |
525 | Safefree(PL_curstackinfo->si_cxstack); |
523 | Safefree (PL_curstackinfo->si_cxstack); |
526 | Safefree(PL_curstackinfo); |
524 | Safefree (PL_curstackinfo); |
527 | PL_curstackinfo = p; |
525 | PL_curstackinfo = p; |
528 | } |
526 | } |
529 | |
527 | |
530 | Safefree(PL_tmps_stack); |
528 | Safefree (PL_tmps_stack); |
531 | Safefree(PL_markstack); |
529 | Safefree (PL_markstack); |
532 | Safefree(PL_scopestack); |
530 | Safefree (PL_scopestack); |
533 | Safefree(PL_savestack); |
531 | Safefree (PL_savestack); |
|
|
532 | #if PERL_VERSION < 9 |
534 | Safefree(PL_retstack); |
533 | Safefree (PL_retstack); |
535 | } |
|
|
536 | |
|
|
537 | static void |
|
|
538 | allocate_stack (Coro__State ctx, int alloc) |
|
|
539 | { |
|
|
540 | coro_stack *stack; |
|
|
541 | |
|
|
542 | New (0, stack, 1, coro_stack); |
|
|
543 | |
|
|
544 | stack->refcnt = 1; |
|
|
545 | stack->usecnt = 1; |
|
|
546 | stack->gencnt = ctx->gencnt = 0; |
|
|
547 | if (alloc) |
|
|
548 | { |
|
|
549 | #if HAVE_MMAP |
|
|
550 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
551 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
552 | if (stack->sptr == (void *)-1) |
|
|
553 | #endif |
534 | #endif |
554 | { |
|
|
555 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
556 | stack->ssize = -4096 * sizeof (long); |
|
|
557 | New (0, stack->sptr, 4096, long); |
|
|
558 | } |
|
|
559 | } |
|
|
560 | else |
|
|
561 | stack->sptr = 0; |
|
|
562 | |
|
|
563 | ctx->stack = stack; |
|
|
564 | } |
535 | } |
565 | |
536 | |
566 | static void |
537 | static void |
567 | deallocate_stack (Coro__State ctx) |
538 | setup_coro (struct coro *coro) |
568 | { |
|
|
569 | coro_stack *stack = ctx->stack; |
|
|
570 | |
|
|
571 | ctx->stack = 0; |
|
|
572 | |
|
|
573 | if (stack) |
|
|
574 | { |
|
|
575 | if (!--stack->refcnt) |
|
|
576 | { |
|
|
577 | #ifdef HAVE_MMAP |
|
|
578 | if (stack->ssize > 0 && stack->sptr) |
|
|
579 | munmap (stack->sptr, stack->ssize); |
|
|
580 | else |
|
|
581 | #else |
|
|
582 | Safefree (stack->sptr); |
|
|
583 | #endif |
|
|
584 | Safefree (stack); |
|
|
585 | } |
|
|
586 | else if (ctx->gencnt == stack->gencnt) |
|
|
587 | --stack->usecnt; |
|
|
588 | } |
|
|
589 | } |
|
|
590 | |
|
|
591 | static void |
|
|
592 | setup_coro (void *arg) |
|
|
593 | { |
539 | { |
594 | /* |
540 | /* |
595 | * emulate part of the perl startup here. |
541 | * emulate part of the perl startup here. |
596 | */ |
542 | */ |
|
|
543 | dTHX; |
597 | dSP; |
544 | dSP; |
598 | Coro__State ctx = (Coro__State)arg; |
545 | UNOP myop; |
599 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
546 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
600 | |
547 | |
601 | coro_init_stacks (aTHX); |
548 | coro_init_stacks (aTHX); |
602 | /*PL_curcop = 0;*/ |
549 | /*PL_curcop = 0;*/ |
603 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
550 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
604 | SvREFCNT_dec (GvAV (PL_defgv)); |
551 | SvREFCNT_dec (GvAV (PL_defgv)); |
605 | GvAV (PL_defgv) = ctx->args; |
552 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
606 | |
553 | |
607 | SPAGAIN; |
554 | SPAGAIN; |
608 | |
555 | |
609 | if (ctx->stack) |
|
|
610 | { |
|
|
611 | ctx->cursp = 0; |
|
|
612 | |
|
|
613 | PUSHMARK(SP); |
|
|
614 | PUTBACK; |
|
|
615 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
616 | |
|
|
617 | if (SvTRUE (ERRSV)) |
|
|
618 | croak (NULL); |
|
|
619 | else |
|
|
620 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
621 | } |
|
|
622 | else |
|
|
623 | { |
|
|
624 | UNOP myop; |
|
|
625 | |
|
|
626 | PL_op = (OP *)&myop; |
|
|
627 | |
|
|
628 | Zero(&myop, 1, UNOP); |
556 | Zero (&myop, 1, UNOP); |
629 | myop.op_next = Nullop; |
557 | myop.op_next = Nullop; |
630 | myop.op_flags = OPf_WANT_VOID; |
558 | myop.op_flags = OPf_WANT_VOID; |
631 | |
559 | |
|
|
560 | PL_op = (OP *)&myop; |
|
|
561 | |
632 | PUSHMARK(SP); |
562 | PUSHMARK(SP); |
633 | XPUSHs (sub_init); |
563 | XPUSHs (sub_init); |
634 | /* |
|
|
635 | * the next line is slightly wrong, as PL_op->op_next |
|
|
636 | * is actually being executed so we skip the first op. |
|
|
637 | * that doesn't matter, though, since it is only |
|
|
638 | * pp_nextstate and we never return... |
|
|
639 | * ah yes, and I don't care anyways ;) |
|
|
640 | */ |
|
|
641 | PUTBACK; |
564 | PUTBACK; |
642 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
565 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
643 | SPAGAIN; |
566 | SPAGAIN; |
644 | |
567 | |
645 | ENTER; /* necessary e.g. for dounwind */ |
568 | ENTER; /* necessary e.g. for dounwind */ |
646 | } |
|
|
647 | } |
569 | } |
648 | |
570 | |
649 | static void |
571 | static void |
650 | continue_coro (void *arg) |
572 | free_coro_mortal () |
651 | { |
573 | { |
652 | /* |
|
|
653 | * this is a _very_ stripped down perl interpreter ;) |
|
|
654 | */ |
|
|
655 | Coro__State ctx = (Coro__State)arg; |
|
|
656 | JMPENV coro_start_env; |
|
|
657 | |
|
|
658 | /* same as JMPENV_BOOTSTRAP */ |
|
|
659 | Zero(&coro_start_env, 1, JMPENV); |
|
|
660 | coro_start_env.je_ret = -1; |
|
|
661 | coro_start_env.je_mustcatch = TRUE; |
|
|
662 | PL_top_env = &coro_start_env; |
|
|
663 | |
|
|
664 | ctx->cursp = 0; |
|
|
665 | PL_op = PL_op->op_next; |
|
|
666 | CALLRUNOPS(aTHX); |
|
|
667 | |
|
|
668 | abort (); |
|
|
669 | } |
|
|
670 | |
|
|
671 | STATIC void |
|
|
672 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
673 | { |
|
|
674 | dSTACKLEVEL; |
|
|
675 | static struct coro *xnext; |
|
|
676 | |
|
|
677 | if (prev != next) |
|
|
678 | { |
|
|
679 | xnext = next; |
|
|
680 | |
|
|
681 | if (next->mainstack) |
|
|
682 | { |
|
|
683 | SAVE (prev, flags); |
|
|
684 | LOAD (next); |
|
|
685 | |
|
|
686 | /* mark this state as in-use */ |
|
|
687 | next->mainstack = 0; |
|
|
688 | next->tmps_ix = -2; |
|
|
689 | |
|
|
690 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
691 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
692 | { |
|
|
693 | if (!prev->stack) |
|
|
694 | allocate_stack (prev, 0); |
|
|
695 | else if (prev->cursp != stacklevel |
|
|
696 | && prev->stack->usecnt > 1) |
|
|
697 | { |
|
|
698 | prev->gencnt = ++prev->stack->gencnt; |
|
|
699 | prev->stack->usecnt = 1; |
|
|
700 | } |
|
|
701 | |
|
|
702 | /* has our stack been invalidated? */ |
|
|
703 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
704 | { |
|
|
705 | deallocate_stack (next); |
|
|
706 | allocate_stack (next, 1); |
|
|
707 | coro_create (&(next->stack->cctx), |
|
|
708 | continue_coro, (void *)next, |
|
|
709 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
710 | } |
|
|
711 | |
|
|
712 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
713 | /* don't add any code here */ |
|
|
714 | } |
|
|
715 | |
|
|
716 | } |
|
|
717 | else if (next->tmps_ix == -2) |
|
|
718 | croak ("tried to transfer to running coroutine"); |
|
|
719 | else |
|
|
720 | { |
|
|
721 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
722 | |
|
|
723 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
724 | { |
|
|
725 | if (!prev->stack) |
|
|
726 | allocate_stack (prev, 0); |
|
|
727 | |
|
|
728 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
729 | { |
|
|
730 | setup_coro (next); |
|
|
731 | |
|
|
732 | prev->stack->refcnt++; |
|
|
733 | prev->stack->usecnt++; |
|
|
734 | next->stack = prev->stack; |
|
|
735 | next->gencnt = prev->gencnt; |
|
|
736 | } |
|
|
737 | else |
|
|
738 | { |
|
|
739 | allocate_stack (next, 1); |
|
|
740 | coro_create (&(next->stack->cctx), |
|
|
741 | setup_coro, (void *)next, |
|
|
742 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
743 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
744 | /* don't add any code here */ |
|
|
745 | } |
|
|
746 | } |
|
|
747 | else |
|
|
748 | setup_coro (next); |
|
|
749 | } |
|
|
750 | |
|
|
751 | /* |
|
|
752 | * xnext is now either prev or next, depending on wether |
|
|
753 | * we switched the c stack or not. that's why I use a global |
|
|
754 | * variable, that should become thread-specific at one point. |
|
|
755 | */ |
|
|
756 | xnext->cursp = stacklevel; |
|
|
757 | } |
|
|
758 | |
|
|
759 | if (coro_mortal) |
574 | if (coro_mortal) |
760 | { |
575 | { |
761 | SvREFCNT_dec (coro_mortal); |
576 | SvREFCNT_dec (coro_mortal); |
762 | coro_mortal = 0; |
577 | coro_mortal = 0; |
763 | } |
578 | } |
764 | } |
579 | } |
765 | |
580 | |
766 | #define SV_CORO(sv,func) \ |
581 | static void |
767 | do { \ |
582 | coro_run (void *arg) |
768 | if (SvROK (sv)) \ |
583 | { |
769 | sv = SvRV (sv); \ |
584 | /* |
770 | \ |
585 | * this is a _very_ stripped down perl interpreter ;) |
771 | if (SvTYPE(sv) == SVt_PVHV) \ |
586 | */ |
772 | { \ |
587 | dTHX; |
773 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
588 | int ret; |
774 | \ |
|
|
775 | if (!he) \ |
|
|
776 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
777 | \ |
|
|
778 | (sv) = SvRV (HeVAL(he)); \ |
|
|
779 | } \ |
|
|
780 | \ |
|
|
781 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
782 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
783 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
784 | \ |
|
|
785 | } while(0) |
|
|
786 | |
589 | |
787 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
590 | UNLOCK; |
788 | |
591 | |
|
|
592 | PL_top_env = &PL_start_env; |
|
|
593 | |
|
|
594 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
|
|
595 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
|
|
596 | |
|
|
597 | /* continue at cctx_init, without entersub */ |
|
|
598 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
599 | |
|
|
600 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
601 | ret = perl_run (aTHX_ PERL_GET_CONTEXT); |
|
|
602 | printf ("ret %d\n", ret);//D |
|
|
603 | |
|
|
604 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
|
|
605 | abort (); |
|
|
606 | } |
|
|
607 | |
|
|
608 | static coro_stack * |
|
|
609 | stack_new () |
|
|
610 | { |
|
|
611 | coro_stack *stack; |
|
|
612 | |
|
|
613 | New (0, stack, 1, coro_stack); |
|
|
614 | |
|
|
615 | #if HAVE_MMAP |
|
|
616 | |
|
|
617 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
618 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
619 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
620 | |
|
|
621 | if (stack->sptr == (void *)-1) |
|
|
622 | { |
|
|
623 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
624 | _exit (EXIT_FAILURE); |
|
|
625 | } |
|
|
626 | |
|
|
627 | # if STACKGUARD |
|
|
628 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
629 | # endif |
|
|
630 | |
|
|
631 | #else |
|
|
632 | |
|
|
633 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
634 | New (0, stack->sptr, STACKSIZE, long); |
|
|
635 | |
|
|
636 | if (!stack->sptr) |
|
|
637 | { |
|
|
638 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
639 | _exit (EXIT_FAILURE); |
|
|
640 | } |
|
|
641 | |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
645 | |
|
|
646 | return stack; |
|
|
647 | } |
|
|
648 | |
|
|
649 | static void |
|
|
650 | stack_free (coro_stack *stack) |
|
|
651 | { |
|
|
652 | if (!stack || stack == main_stack) |
|
|
653 | return; |
|
|
654 | |
|
|
655 | #if HAVE_MMAP |
|
|
656 | munmap (stack->sptr, stack->ssize); |
|
|
657 | #else |
|
|
658 | Safefree (stack->sptr); |
|
|
659 | #endif |
|
|
660 | |
|
|
661 | Safefree (stack); |
|
|
662 | } |
|
|
663 | |
|
|
664 | static coro_stack *stack_first; |
|
|
665 | |
|
|
666 | static coro_stack * |
|
|
667 | stack_get () |
|
|
668 | { |
|
|
669 | coro_stack *stack; |
|
|
670 | |
|
|
671 | if (stack_first) |
|
|
672 | { |
|
|
673 | stack = stack_first; |
|
|
674 | stack_first = stack->next; |
|
|
675 | } |
|
|
676 | else |
|
|
677 | { |
|
|
678 | stack = stack_new (); |
|
|
679 | PL_op = PL_op->op_next; |
|
|
680 | } |
|
|
681 | |
|
|
682 | return stack; |
|
|
683 | } |
|
|
684 | |
|
|
685 | static void |
|
|
686 | stack_put (coro_stack *stack) |
|
|
687 | { |
|
|
688 | stack->next = stack_first; |
|
|
689 | stack_first = stack; |
|
|
690 | } |
|
|
691 | |
|
|
692 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
693 | static void |
|
|
694 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
695 | { |
|
|
696 | dSTACKLEVEL; |
|
|
697 | |
|
|
698 | /* sometimes transfer is only called to set idle_sp */ |
|
|
699 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
700 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
|
|
701 | else if (prev != next) |
|
|
702 | { |
|
|
703 | coro_stack *prev__stack; |
|
|
704 | |
|
|
705 | LOCK; |
|
|
706 | |
|
|
707 | if (next->mainstack) |
|
|
708 | { |
|
|
709 | /* coroutine already started */ |
|
|
710 | SAVE (prev, flags); |
|
|
711 | LOAD (next); |
|
|
712 | } |
|
|
713 | else |
|
|
714 | { |
|
|
715 | /* need to start coroutine */ |
|
|
716 | /* first get rid of the old state */ |
|
|
717 | SAVE (prev, -1); |
|
|
718 | /* setup coroutine call */ |
|
|
719 | setup_coro (next); |
|
|
720 | /* need a stack */ |
|
|
721 | next->stack = 0; |
|
|
722 | } |
|
|
723 | |
|
|
724 | prev__stack = prev->stack; |
|
|
725 | |
|
|
726 | /* possibly "free" the stack */ |
|
|
727 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
728 | { |
|
|
729 | stack_put (prev__stack); |
|
|
730 | prev->stack = 0; |
|
|
731 | } |
|
|
732 | |
|
|
733 | if (!next->stack) |
|
|
734 | next->stack = stack_get (); |
|
|
735 | |
|
|
736 | if (prev__stack != next->stack) |
|
|
737 | { |
|
|
738 | prev__stack->top_env = PL_top_env; |
|
|
739 | PL_top_env = next->stack->top_env; |
|
|
740 | printf ("stacksw %p %p\n", prev__stack->idle_sp, next->stack->idle_sp);//D |
|
|
741 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
742 | } |
|
|
743 | |
|
|
744 | free_coro_mortal (); |
|
|
745 | |
|
|
746 | UNLOCK; |
|
|
747 | } |
|
|
748 | } |
|
|
749 | |
|
|
750 | /* use this function pointer to call the above function */ |
|
|
751 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
752 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
753 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
754 | |
|
|
755 | struct transfer_args |
|
|
756 | { |
|
|
757 | struct coro *prev, *next; |
|
|
758 | int flags; |
|
|
759 | }; |
|
|
760 | |
|
|
761 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
762 | |
|
|
763 | static void |
|
|
764 | coro_state_destroy (struct coro *coro) |
|
|
765 | { |
|
|
766 | if (coro->refcnt--) |
|
|
767 | return; |
|
|
768 | |
|
|
769 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
770 | { |
|
|
771 | struct coro temp; |
|
|
772 | |
|
|
773 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
774 | LOAD (aTHX_ coro); |
|
|
775 | |
|
|
776 | destroy_stacks (aTHX); |
|
|
777 | |
|
|
778 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
779 | |
|
|
780 | coro->mainstack = 0; |
|
|
781 | } |
|
|
782 | |
|
|
783 | stack_free (coro->stack); |
|
|
784 | SvREFCNT_dec (coro->args); |
|
|
785 | Safefree (coro); |
|
|
786 | } |
|
|
787 | |
789 | static void |
788 | static int |
|
|
789 | coro_state_clear (SV *sv, MAGIC *mg) |
|
|
790 | { |
|
|
791 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
792 | mg->mg_ptr = 0; |
|
|
793 | |
|
|
794 | coro_state_destroy (coro); |
|
|
795 | |
|
|
796 | return 0; |
|
|
797 | } |
|
|
798 | |
|
|
799 | static int |
|
|
800 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
|
|
801 | { |
|
|
802 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
803 | |
|
|
804 | ++coro->refcnt; |
|
|
805 | |
|
|
806 | return 0; |
|
|
807 | } |
|
|
808 | |
|
|
809 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
810 | |
|
|
811 | static struct coro * |
|
|
812 | SvSTATE (SV *coro) |
|
|
813 | { |
|
|
814 | HV *stash; |
|
|
815 | MAGIC *mg; |
|
|
816 | |
|
|
817 | if (SvROK (coro)) |
|
|
818 | coro = SvRV (coro); |
|
|
819 | |
|
|
820 | stash = SvSTASH (coro); |
|
|
821 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
822 | { |
|
|
823 | /* very slow, but rare, check */ |
|
|
824 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
825 | croak ("Coro::State object required"); |
|
|
826 | } |
|
|
827 | |
|
|
828 | mg = SvMAGIC (coro); |
|
|
829 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
830 | return (struct coro *)mg->mg_ptr; |
|
|
831 | } |
|
|
832 | |
|
|
833 | static void |
|
|
834 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
835 | { |
|
|
836 | ta->prev = SvSTATE (prev); |
|
|
837 | ta->next = SvSTATE (next); |
|
|
838 | ta->flags = flags; |
|
|
839 | } |
|
|
840 | |
|
|
841 | static void |
790 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
842 | api_transfer (SV *prev, SV *next, int flags) |
791 | { |
843 | { |
792 | SV_CORO (prev, "Coro::transfer"); |
844 | dTHX; |
793 | SV_CORO (next, "Coro::transfer"); |
845 | struct transfer_args ta; |
794 | |
846 | |
795 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
847 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
|
|
848 | TRANSFER (ta); |
796 | } |
849 | } |
797 | |
850 | |
798 | /** Coro ********************************************************************/ |
851 | /** Coro ********************************************************************/ |
799 | |
852 | |
800 | #define PRIO_MAX 3 |
853 | #define PRIO_MAX 3 |
… | |
… | |
804 | #define PRIO_IDLE -3 |
857 | #define PRIO_IDLE -3 |
805 | #define PRIO_MIN -4 |
858 | #define PRIO_MIN -4 |
806 | |
859 | |
807 | /* for Coro.pm */ |
860 | /* for Coro.pm */ |
808 | static GV *coro_current, *coro_idle; |
861 | static GV *coro_current, *coro_idle; |
809 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
862 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
810 | static int coro_nready; |
863 | static int coro_nready; |
811 | |
864 | |
812 | static void |
865 | static void |
813 | coro_enq (SV *sv) |
866 | coro_enq (pTHX_ SV *sv) |
814 | { |
867 | { |
|
|
868 | int prio; |
|
|
869 | |
815 | if (SvTYPE (sv) == SVt_PVHV) |
870 | if (SvTYPE (sv) != SVt_PVHV) |
816 | { |
|
|
817 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
818 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
819 | |
|
|
820 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
821 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
822 | : prio; |
|
|
823 | |
|
|
824 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
825 | coro_nready++; |
|
|
826 | |
|
|
827 | return; |
|
|
828 | } |
|
|
829 | |
|
|
830 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
871 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
872 | |
|
|
873 | prio = SvSTATE (sv)->prio; |
|
|
874 | |
|
|
875 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
876 | coro_nready++; |
831 | } |
877 | } |
832 | |
878 | |
833 | static SV * |
879 | static SV * |
834 | coro_deq (int min_prio) |
880 | coro_deq (pTHX_ int min_prio) |
835 | { |
881 | { |
836 | int prio = PRIO_MAX - PRIO_MIN; |
882 | int prio = PRIO_MAX - PRIO_MIN; |
837 | |
883 | |
838 | min_prio -= PRIO_MIN; |
884 | min_prio -= PRIO_MIN; |
839 | if (min_prio < 0) |
885 | if (min_prio < 0) |
840 | min_prio = 0; |
886 | min_prio = 0; |
841 | |
887 | |
842 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
888 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
843 | if (av_len (coro_ready[prio]) >= 0) |
889 | if (AvFILLp (coro_ready [prio]) >= 0) |
844 | { |
890 | { |
845 | coro_nready--; |
891 | coro_nready--; |
846 | return av_shift (coro_ready[prio]); |
892 | return av_shift (coro_ready [prio]); |
847 | } |
893 | } |
848 | |
894 | |
849 | return 0; |
895 | return 0; |
850 | } |
896 | } |
851 | |
897 | |
852 | static void |
898 | static void |
853 | api_ready (SV *coro) |
899 | api_ready (SV *coro) |
854 | { |
900 | { |
|
|
901 | dTHX; |
|
|
902 | |
855 | if (SvROK (coro)) |
903 | if (SvROK (coro)) |
856 | coro = SvRV (coro); |
904 | coro = SvRV (coro); |
857 | |
905 | |
|
|
906 | LOCK; |
858 | coro_enq (SvREFCNT_inc (coro)); |
907 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
908 | UNLOCK; |
|
|
909 | } |
|
|
910 | |
|
|
911 | static void |
|
|
912 | prepare_schedule (aTHX_ struct transfer_args *ta) |
|
|
913 | { |
|
|
914 | SV *current, *prev, *next; |
|
|
915 | |
|
|
916 | LOCK; |
|
|
917 | |
|
|
918 | current = GvSV (coro_current); |
|
|
919 | |
|
|
920 | for (;;) |
|
|
921 | { |
|
|
922 | LOCK; |
|
|
923 | |
|
|
924 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
925 | |
|
|
926 | if (next) |
|
|
927 | break; |
|
|
928 | |
|
|
929 | UNLOCK; |
|
|
930 | |
|
|
931 | { |
|
|
932 | dSP; |
|
|
933 | |
|
|
934 | ENTER; |
|
|
935 | SAVETMPS; |
|
|
936 | |
|
|
937 | PUSHMARK (SP); |
|
|
938 | PUTBACK; |
|
|
939 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
940 | |
|
|
941 | FREETMPS; |
|
|
942 | LEAVE; |
|
|
943 | } |
|
|
944 | } |
|
|
945 | |
|
|
946 | prev = SvRV (current); |
|
|
947 | SvRV (current) = next; |
|
|
948 | |
|
|
949 | /* free this only after the transfer */ |
|
|
950 | free_coro_mortal (); |
|
|
951 | coro_mortal = prev; |
|
|
952 | |
|
|
953 | ta->prev = SvSTATE (prev); |
|
|
954 | ta->next = SvSTATE (next); |
|
|
955 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
956 | |
|
|
957 | UNLOCK; |
|
|
958 | } |
|
|
959 | |
|
|
960 | static void |
|
|
961 | prepare_cede (aTHX_ struct transfer_args *ta) |
|
|
962 | { |
|
|
963 | LOCK; |
|
|
964 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
965 | UNLOCK; |
|
|
966 | |
|
|
967 | prepare_schedule (ta); |
859 | } |
968 | } |
860 | |
969 | |
861 | static void |
970 | static void |
862 | api_schedule (void) |
971 | api_schedule (void) |
863 | { |
972 | { |
864 | SV *prev, *next; |
973 | dTHX; |
|
|
974 | struct transfer_args ta; |
865 | |
975 | |
866 | prev = SvRV (GvSV (coro_current)); |
976 | prepare_schedule (&ta); |
867 | next = coro_deq (PRIO_MIN); |
977 | TRANSFER (ta); |
868 | |
|
|
869 | if (!next) |
|
|
870 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
871 | |
|
|
872 | /* free this only after the transfer */ |
|
|
873 | coro_mortal = prev; |
|
|
874 | SV_CORO (prev, "Coro::schedule"); |
|
|
875 | |
|
|
876 | SvRV (GvSV (coro_current)) = next; |
|
|
877 | |
|
|
878 | SV_CORO (next, "Coro::schedule"); |
|
|
879 | |
|
|
880 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
881 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
882 | } |
978 | } |
883 | |
979 | |
884 | static void |
980 | static void |
885 | api_cede (void) |
981 | api_cede (void) |
886 | { |
982 | { |
887 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
983 | dTHX; |
|
|
984 | struct transfer_args ta; |
888 | |
985 | |
889 | api_schedule (); |
986 | prepare_cede (&ta); |
|
|
987 | TRANSFER (ta); |
890 | } |
988 | } |
891 | |
989 | |
892 | MODULE = Coro::State PACKAGE = Coro::State |
990 | MODULE = Coro::State PACKAGE = Coro::State |
893 | |
991 | |
894 | PROTOTYPES: ENABLE |
992 | PROTOTYPES: DISABLE |
895 | |
993 | |
896 | BOOT: |
994 | BOOT: |
897 | { /* {} necessary for stoopid perl-5.6.x */ |
995 | { |
898 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
996 | #ifdef USE_ITHREADS |
899 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
997 | MUTEX_INIT (&coro_mutex); |
|
|
998 | #endif |
|
|
999 | BOOT_PAGESIZE; |
|
|
1000 | |
900 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1001 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
901 | |
1002 | |
902 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1003 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
903 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1004 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
904 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1005 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
905 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
906 | |
|
|
907 | if (!padlist_cache) |
|
|
908 | padlist_cache = newHV (); |
|
|
909 | |
1006 | |
910 | main_mainstack = PL_mainstack; |
1007 | main_mainstack = PL_mainstack; |
911 | |
1008 | |
912 | coroapi.ver = CORO_API_VERSION; |
1009 | coroapi.ver = CORO_API_VERSION; |
913 | coroapi.transfer = api_transfer; |
1010 | coroapi.transfer = api_transfer; |
914 | } |
|
|
915 | |
1011 | |
916 | Coro::State |
1012 | Newz (0, main_stack, 1, coro_stack); |
917 | _newprocess(args) |
1013 | main_stack->idle_sp = (void *)-1; |
918 | SV * args |
1014 | |
919 | PROTOTYPE: $ |
1015 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | SV * |
|
|
1019 | new (char *klass, ...) |
920 | CODE: |
1020 | CODE: |
921 | Coro__State coro; |
1021 | { |
|
|
1022 | struct coro *coro; |
|
|
1023 | HV *hv; |
|
|
1024 | int i; |
922 | |
1025 | |
923 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
924 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
925 | |
|
|
926 | New (0, coro, 1, struct coro); |
1026 | Newz (0, coro, 1, struct coro); |
|
|
1027 | coro->args = newAV (); |
927 | |
1028 | |
928 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1029 | hv = newHV (); |
|
|
1030 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1031 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1032 | |
|
|
1033 | for (i = 1; i < items; i++) |
|
|
1034 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1035 | |
|
|
1036 | coro->stack = main_stack; |
929 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1037 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
930 | coro->stack = 0; |
1038 | /*coro->stack = 0;*/ |
931 | |
1039 | } |
932 | RETVAL = coro; |
|
|
933 | OUTPUT: |
1040 | OUTPUT: |
934 | RETVAL |
1041 | RETVAL |
935 | |
1042 | |
936 | void |
1043 | void |
937 | transfer(prev, next, flags) |
1044 | _set_stacklevel (...) |
938 | SV *prev |
1045 | ALIAS: |
939 | SV *next |
1046 | Coro::State::transfer = 1 |
940 | int flags |
1047 | Coro::schedule = 2 |
941 | PROTOTYPE: @ |
1048 | Coro::cede = 3 |
|
|
1049 | Coro::Cont::yield = 4 |
942 | CODE: |
1050 | CODE: |
943 | PUTBACK; |
1051 | { |
944 | SV_CORO (next, "Coro::transfer"); |
1052 | struct transfer_args ta; |
945 | SV_CORO (prev, "Coro::transfer"); |
1053 | |
946 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1054 | switch (ix) |
947 | SPAGAIN; |
1055 | { |
|
|
1056 | case 0: |
|
|
1057 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1058 | ta.next = 0; |
|
|
1059 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1060 | break; |
|
|
1061 | |
|
|
1062 | case 1: |
|
|
1063 | if (items != 3) |
|
|
1064 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1065 | |
|
|
1066 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1067 | break; |
|
|
1068 | |
|
|
1069 | case 2: |
|
|
1070 | prepare_schedule (&ta); |
|
|
1071 | break; |
|
|
1072 | |
|
|
1073 | case 3: |
|
|
1074 | prepare_cede (&ta); |
|
|
1075 | break; |
|
|
1076 | |
|
|
1077 | case 4: |
|
|
1078 | { |
|
|
1079 | SV *yieldstack; |
|
|
1080 | SV *sv; |
|
|
1081 | AV *defav = GvAV (PL_defgv); |
|
|
1082 | |
|
|
1083 | yieldstack = *hv_fetch ( |
|
|
1084 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1085 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1086 | 0 |
|
|
1087 | ); |
|
|
1088 | |
|
|
1089 | /* set up @_ -- ugly */ |
|
|
1090 | av_clear (defav); |
|
|
1091 | av_fill (defav, items - 1); |
|
|
1092 | while (items--) |
|
|
1093 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1094 | |
|
|
1095 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1096 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1097 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1098 | ta.flags = 0; |
|
|
1099 | SvREFCNT_dec (sv); |
|
|
1100 | } |
|
|
1101 | break; |
|
|
1102 | |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | TRANSFER (ta); |
|
|
1106 | } |
948 | |
1107 | |
949 | void |
1108 | void |
950 | DESTROY(coro) |
1109 | _clone_state_from (SV *dst, SV *src) |
951 | Coro::State coro |
1110 | CODE: |
952 | CODE: |
1111 | { |
|
|
1112 | struct coro *coro_src = SvSTATE (src); |
953 | |
1113 | |
954 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1114 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
955 | { |
|
|
956 | struct coro temp; |
|
|
957 | |
1115 | |
958 | PUTBACK; |
1116 | ++coro_src->refcnt; |
959 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1117 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
960 | LOAD(aTHX_ coro); |
1118 | } |
961 | SPAGAIN; |
|
|
962 | |
|
|
963 | destroy_stacks (aTHX); |
|
|
964 | |
|
|
965 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
966 | SPAGAIN; |
|
|
967 | |
|
|
968 | coro->mainstack = 0; |
|
|
969 | } |
|
|
970 | |
|
|
971 | deallocate_stack (coro); |
|
|
972 | |
|
|
973 | Safefree (coro); |
|
|
974 | |
1119 | |
975 | void |
1120 | void |
976 | flush() |
1121 | _nonlocal_goto (IV nextop) |
977 | CODE: |
1122 | CODE: |
978 | #ifdef MAY_FLUSH |
1123 | /* uuh, somebody will kill me again for this */ |
979 | flush_padlist_cache (); |
1124 | PL_op->op_next = INT2PTR (OP *, nextop); |
980 | #endif |
|
|
981 | |
1125 | |
982 | void |
1126 | void |
983 | _exit(code) |
1127 | _exit (code) |
984 | int code |
1128 | int code |
985 | PROTOTYPE: $ |
1129 | PROTOTYPE: $ |
986 | CODE: |
1130 | CODE: |
987 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
988 | _exit (code); |
1131 | _exit (code); |
989 | #else |
|
|
990 | signal (SIGTERM, SIG_DFL); |
|
|
991 | raise (SIGTERM); |
|
|
992 | exit (code); |
|
|
993 | #endif |
|
|
994 | |
|
|
995 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
996 | |
|
|
997 | # this is slightly dirty (should expose a c-level api) |
|
|
998 | |
|
|
999 | void |
|
|
1000 | yield(...) |
|
|
1001 | PROTOTYPE: @ |
|
|
1002 | CODE: |
|
|
1003 | static SV *returnstk; |
|
|
1004 | SV *sv; |
|
|
1005 | AV *defav = GvAV (PL_defgv); |
|
|
1006 | struct coro *prev, *next; |
|
|
1007 | |
|
|
1008 | if (!returnstk) |
|
|
1009 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
1010 | |
|
|
1011 | /* set up @_ -- ugly */ |
|
|
1012 | av_clear (defav); |
|
|
1013 | av_fill (defav, items - 1); |
|
|
1014 | while (items--) |
|
|
1015 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1016 | |
|
|
1017 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1018 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1019 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1020 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1021 | SvREFCNT_dec (sv); |
|
|
1022 | |
|
|
1023 | transfer(aTHX_ prev, next, 0); |
|
|
1024 | |
1132 | |
1025 | MODULE = Coro::State PACKAGE = Coro |
1133 | MODULE = Coro::State PACKAGE = Coro |
1026 | |
1134 | |
1027 | # this is slightly dirty (should expose a c-level api) |
|
|
1028 | |
|
|
1029 | BOOT: |
1135 | BOOT: |
1030 | { |
1136 | { |
1031 | int i; |
1137 | int i; |
|
|
1138 | |
1032 | HV *stash = gv_stashpv ("Coro", TRUE); |
1139 | coro_stash = gv_stashpv ("Coro", TRUE); |
1033 | |
1140 | |
1034 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1141 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1035 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1142 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1036 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1143 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1037 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1144 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1038 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1145 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1039 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1146 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1040 | |
1147 | |
1041 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1148 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1042 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1149 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1043 | |
1150 | |
1044 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1151 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1052 | coroapi.ready = api_ready; |
1159 | coroapi.ready = api_ready; |
1053 | coroapi.nready = &coro_nready; |
1160 | coroapi.nready = &coro_nready; |
1054 | coroapi.current = coro_current; |
1161 | coroapi.current = coro_current; |
1055 | |
1162 | |
1056 | GCoroAPI = &coroapi; |
1163 | GCoroAPI = &coroapi; |
1057 | sv_setiv(sv, (IV)&coroapi); |
1164 | sv_setiv (sv, (IV)&coroapi); |
1058 | SvREADONLY_on(sv); |
1165 | SvREADONLY_on (sv); |
1059 | } |
1166 | } |
1060 | } |
1167 | } |
1061 | |
1168 | |
|
|
1169 | int |
|
|
1170 | prio (Coro::State coro, int newprio = 0) |
|
|
1171 | ALIAS: |
|
|
1172 | nice = 1 |
|
|
1173 | CODE: |
|
|
1174 | { |
|
|
1175 | RETVAL = coro->prio; |
|
|
1176 | |
|
|
1177 | if (items > 1) |
|
|
1178 | { |
|
|
1179 | if (ix) |
|
|
1180 | newprio += coro->prio; |
|
|
1181 | |
|
|
1182 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1183 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1184 | |
|
|
1185 | coro->prio = newprio; |
|
|
1186 | } |
|
|
1187 | } |
|
|
1188 | |
1062 | void |
1189 | void |
1063 | ready(self) |
1190 | ready (SV *self) |
1064 | SV * self |
|
|
1065 | PROTOTYPE: $ |
1191 | PROTOTYPE: $ |
1066 | CODE: |
1192 | CODE: |
1067 | api_ready (self); |
1193 | api_ready (self); |
1068 | |
1194 | |
1069 | int |
1195 | int |
1070 | nready(...) |
1196 | nready (...) |
1071 | PROTOTYPE: |
1197 | PROTOTYPE: |
1072 | CODE: |
1198 | CODE: |
1073 | RETVAL = coro_nready; |
1199 | RETVAL = coro_nready; |
1074 | OUTPUT: |
1200 | OUTPUT: |
1075 | RETVAL |
1201 | RETVAL |
1076 | |
1202 | |
|
|
1203 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1204 | |
|
|
1205 | SV * |
|
|
1206 | _get_state () |
|
|
1207 | CODE: |
|
|
1208 | { |
|
|
1209 | struct { |
|
|
1210 | int errorno; |
|
|
1211 | int laststype; |
|
|
1212 | int laststatval; |
|
|
1213 | Stat_t statcache; |
|
|
1214 | } data; |
|
|
1215 | |
|
|
1216 | data.errorno = errno; |
|
|
1217 | data.laststype = PL_laststype; |
|
|
1218 | data.laststatval = PL_laststatval; |
|
|
1219 | data.statcache = PL_statcache; |
|
|
1220 | |
|
|
1221 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1222 | } |
|
|
1223 | OUTPUT: |
|
|
1224 | RETVAL |
|
|
1225 | |
1077 | void |
1226 | void |
1078 | schedule(...) |
1227 | _set_state (char *data_) |
1079 | PROTOTYPE: |
1228 | PROTOTYPE: $ |
1080 | CODE: |
1229 | CODE: |
1081 | api_schedule (); |
1230 | { |
|
|
1231 | struct { |
|
|
1232 | int errorno; |
|
|
1233 | int laststype; |
|
|
1234 | int laststatval; |
|
|
1235 | Stat_t statcache; |
|
|
1236 | } *data = (void *)data_; |
1082 | |
1237 | |
1083 | void |
1238 | errno = data->errorno; |
1084 | cede(...) |
1239 | PL_laststype = data->laststype; |
1085 | PROTOTYPE: |
1240 | PL_laststatval = data->laststatval; |
1086 | CODE: |
1241 | PL_statcache = data->statcache; |
1087 | api_cede (); |
1242 | } |
1088 | |
|
|