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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 |
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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)) |
71 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
34 | |
72 | |
35 | #include "CoroAPI.h" |
73 | #include "CoroAPI.h" |
36 | |
74 | |
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75 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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76 | |
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77 | #ifdef USE_ITHREADS |
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78 | static perl_mutex coro_mutex; |
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79 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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80 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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81 | #else |
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82 | # define LOCK (void)0 |
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83 | # define UNLOCK (void)0 |
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84 | #endif |
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85 | |
37 | static struct CoroAPI coroapi; |
86 | static struct CoroAPI coroapi; |
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87 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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88 | static HV *coro_state_stash, *coro_stash; |
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89 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
90 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
91 | /* this is a structure representing a c-level coroutine */ |
40 | typedef struct { |
92 | typedef struct coro_stack { |
41 | int refcnt; /* pointer reference counter */ |
93 | 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 | |
94 | |
45 | coro_context cctx; |
95 | void *idle_sp; /* original stacklevel when coroutine was created */ |
46 | |
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47 | void *sptr; |
96 | void *sptr; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
97 | long ssize; /* positive == mmap, otherwise malloc */ |
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98 | |
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99 | /* cpu state */ |
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100 | coro_context cctx; |
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101 | JMPENV *top_env; |
49 | } coro_stack; |
102 | } coro_stack; |
50 | |
103 | |
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104 | /* the (fake) coro_stack representing the main program */ |
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105 | static coro_stack *main_stack; |
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106 | |
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107 | /* this is a structure representing a perl-level coroutine */ |
51 | struct coro { |
108 | struct coro { |
52 | /* the optional C context */ |
109 | /* the c coroutine allocated to this perl coroutine, if any */ |
53 | coro_stack *stack; |
110 | coro_stack *stack; |
54 | void *cursp; |
111 | |
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112 | /* data associated with this coroutine (initial args) */ |
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113 | AV *args; |
55 | int gencnt; |
114 | int refcnt; |
56 | |
115 | |
57 | /* optionally saved, might be zero */ |
116 | /* optionally saved, might be zero */ |
58 | AV *defav; |
117 | AV *defav; |
59 | SV *defsv; |
118 | SV *defsv; |
60 | SV *errsv; |
119 | SV *errsv; |
61 | /* TODO: PL_pmop might be nice && effortless to save. */ |
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62 | |
120 | |
63 | /* saved global state not related to stacks */ |
121 | /* saved global state not related to stacks */ |
64 | U8 dowarn; |
122 | U8 dowarn; |
65 | I32 in_eval; |
123 | I32 in_eval; |
66 | |
124 | |
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69 | AV *curstack; |
127 | AV *curstack; |
70 | AV *mainstack; |
128 | AV *mainstack; |
71 | SV **stack_sp; |
129 | SV **stack_sp; |
72 | OP *op; |
130 | OP *op; |
73 | SV **curpad; |
131 | SV **curpad; |
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132 | AV *comppad; |
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133 | CV *compcv; |
74 | SV **stack_base; |
134 | SV **stack_base; |
75 | SV **stack_max; |
135 | SV **stack_max; |
76 | SV **tmps_stack; |
136 | SV **tmps_stack; |
77 | I32 tmps_floor; |
137 | I32 tmps_floor; |
78 | I32 tmps_ix; |
138 | I32 tmps_ix; |
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87 | I32 savestack_ix; |
147 | I32 savestack_ix; |
88 | I32 savestack_max; |
148 | I32 savestack_max; |
89 | OP **retstack; |
149 | OP **retstack; |
90 | I32 retstack_ix; |
150 | I32 retstack_ix; |
91 | I32 retstack_max; |
151 | I32 retstack_max; |
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152 | PMOP *curpm; |
92 | COP *curcop; |
153 | COP *curcop; |
93 | JMPENV *top_env; |
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94 | |
154 | |
95 | /* data associated with this coroutine (initial args) */ |
155 | /* coro process data */ |
96 | AV *args; |
156 | int prio; |
97 | }; |
157 | }; |
98 | |
158 | |
99 | typedef struct coro *Coro__State; |
159 | typedef struct coro *Coro__State; |
100 | typedef struct coro *Coro__State_or_hashref; |
160 | typedef struct coro *Coro__State_or_hashref; |
101 | |
161 | |
102 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
162 | static AV * |
103 | static HV *coro_state_stash; |
163 | coro_clone_padlist (pTHX_ CV *cv) |
104 | static SV *ucoro_state_sv; |
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105 | static U32 ucoro_state_hash; |
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106 | static HV *padlist_cache; |
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107 | static SV *coro_mortal; /* will be freed after next transfer */ |
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108 | |
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109 | /* mostly copied from op.c:cv_clone2 */ |
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110 | STATIC AV * |
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111 | clone_padlist (AV *protopadlist) |
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112 | { |
164 | { |
113 | AV *av; |
165 | AV *padlist = CvPADLIST (cv); |
114 | I32 ix; |
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115 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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116 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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117 | SV **pname = AvARRAY (protopad_name); |
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118 | SV **ppad = AvARRAY (protopad); |
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119 | I32 fname = AvFILLp (protopad_name); |
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120 | I32 fpad = AvFILLp (protopad); |
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121 | AV *newpadlist, *newpad_name, *newpad; |
166 | AV *newpadlist, *newpad; |
122 | SV **npad; |
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123 | |
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124 | newpad_name = newAV (); |
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125 | for (ix = fname; ix >= 0; ix--) |
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126 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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127 | |
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128 | newpad = newAV (); |
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129 | av_fill (newpad, AvFILLp (protopad)); |
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130 | npad = AvARRAY (newpad); |
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131 | |
167 | |
132 | newpadlist = newAV (); |
168 | newpadlist = newAV (); |
133 | AvREAL_off (newpadlist); |
169 | AvREAL_off (newpadlist); |
134 | av_store (newpadlist, 0, (SV *) newpad_name); |
170 | #if PERL_VERSION < 9 |
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171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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172 | #else |
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173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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174 | #endif |
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175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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176 | --AvFILLp (padlist); |
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177 | |
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178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
135 | av_store (newpadlist, 1, (SV *) newpad); |
179 | av_store (newpadlist, 1, (SV *)newpad); |
136 | |
180 | |
137 | av = newAV (); /* will be @_ */ |
181 | return newpadlist; |
138 | av_extend (av, 0); |
182 | } |
139 | av_store (newpad, 0, (SV *) av); |
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140 | AvFLAGS (av) = AVf_REIFY; |
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141 | |
183 | |
142 | for (ix = fpad; ix > 0; ix--) |
184 | static void |
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185 | free_padlist (pTHX_ AV *padlist) |
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186 | { |
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187 | /* may be during global destruction */ |
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188 | if (SvREFCNT (padlist)) |
143 | { |
189 | { |
144 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
190 | I32 i = AvFILLp (padlist); |
145 | if (namesv && namesv != &PL_sv_undef) |
191 | while (i >= 0) |
146 | { |
192 | { |
147 | char *name = SvPVX (namesv); /* XXX */ |
193 | SV **svp = av_fetch (padlist, i--, FALSE); |
148 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
194 | if (svp) |
149 | { /* lexical from outside? */ |
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150 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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151 | } |
195 | { |
152 | else |
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153 | { /* our own lexical */ |
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154 | SV *sv; |
196 | SV *sv; |
155 | if (*name == '&') |
197 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
156 | sv = SvREFCNT_inc (ppad[ix]); |
198 | SvREFCNT_dec (sv); |
157 | else if (*name == '@') |
199 | |
158 | sv = (SV *) newAV (); |
200 | SvREFCNT_dec (*svp); |
159 | else if (*name == '%') |
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160 | sv = (SV *) newHV (); |
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161 | else |
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162 | sv = NEWSV (0, 0); |
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163 | if (!SvPADBUSY (sv)) |
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164 | SvPADMY_on (sv); |
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165 | npad[ix] = sv; |
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166 | } |
201 | } |
167 | } |
202 | } |
168 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
203 | |
169 | { |
204 | SvREFCNT_dec ((SV*)padlist); |
170 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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171 | } |
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172 | else |
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173 | { |
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174 | SV *sv = NEWSV (0, 0); |
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175 | SvPADTMP_on (sv); |
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176 | npad[ix] = sv; |
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177 | } |
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178 | } |
205 | } |
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206 | } |
179 | |
207 | |
180 | #if 0 /* return -ENOTUNDERSTOOD */ |
208 | static int |
181 | /* Now that vars are all in place, clone nested closures. */ |
209 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
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210 | { |
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211 | AV *padlist; |
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212 | AV *av = (AV *)mg->mg_obj; |
182 | |
213 | |
183 | for (ix = fpad; ix > 0; ix--) { |
214 | /* casting is fun. */ |
184 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
185 | if (namesv |
216 | free_padlist (aTHX_ padlist); |
186 | && namesv != &PL_sv_undef |
217 | |
187 | && !(SvFLAGS(namesv) & SVf_FAKE) |
218 | SvREFCNT_dec (av); |
188 | && *SvPVX(namesv) == '&' |
219 | |
189 | && CvCLONE(ppad[ix])) |
220 | return 0; |
190 | { |
221 | } |
191 | CV *kid = cv_clone((CV*)ppad[ix]); |
222 | |
192 | SvREFCNT_dec(ppad[ix]); |
223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
193 | CvCLONE_on(kid); |
224 | |
194 | SvPADMY_on(kid); |
225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
195 | npad[ix] = (SV*)kid; |
226 | |
196 | } |
227 | /* the next two functions merely cache the padlists */ |
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228 | static void |
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229 | get_padlist (pTHX_ CV *cv) |
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230 | { |
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231 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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232 | |
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233 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
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234 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
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235 | else |
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236 | { |
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237 | #if 0 |
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238 | /* this should work - but it doesn't :( */ |
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239 | CV *cp = Perl_cv_clone (aTHX_ cv); |
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240 | CvPADLIST (cv) = CvPADLIST (cp); |
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241 | CvPADLIST (cp) = 0; |
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242 | SvREFCNT_dec (cp); |
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243 | #else |
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244 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
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245 | #endif |
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246 | } |
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247 | } |
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248 | |
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249 | static void |
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250 | put_padlist (pTHX_ CV *cv) |
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251 | { |
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252 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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253 | |
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254 | if (!mg) |
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255 | { |
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256 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
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257 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
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258 | mg->mg_virtual = &vtbl_coro; |
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259 | mg->mg_obj = (SV *)newAV (); |
197 | } |
260 | } |
198 | #endif |
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199 | |
261 | |
200 | return newpadlist; |
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201 | } |
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202 | |
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203 | #ifdef MAY_FLUSH |
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204 | STATIC void |
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205 | free_padlist (AV *padlist) |
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206 | { |
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207 | /* may be during global destruction */ |
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208 | if (SvREFCNT(padlist)) |
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209 | { |
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210 | I32 i = AvFILLp(padlist); |
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211 | while (i >= 0) |
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212 | { |
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213 | SV **svp = av_fetch(padlist, i--, FALSE); |
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214 | SV *sv = svp ? *svp : Nullsv; |
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215 | if (sv) |
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216 | SvREFCNT_dec(sv); |
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217 | } |
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218 | |
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219 | SvREFCNT_dec((SV*)padlist); |
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220 | } |
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221 | } |
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222 | #endif |
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223 | |
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224 | /* the next two functions merely cache the padlists */ |
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225 | STATIC void |
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226 | get_padlist (CV *cv) |
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227 | { |
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228 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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229 | |
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230 | if (he && AvFILLp ((AV *)*he) >= 0) |
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231 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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232 | else |
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233 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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234 | } |
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235 | |
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236 | STATIC void |
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237 | put_padlist (CV *cv) |
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238 | { |
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239 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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240 | |
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241 | if (SvTYPE (*he) != SVt_PVAV) |
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242 | { |
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243 | SvREFCNT_dec (*he); |
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244 | *he = (SV *)newAV (); |
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245 | } |
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246 | |
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247 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
262 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
248 | } |
263 | } |
249 | |
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250 | #ifdef MAY_FLUSH |
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251 | STATIC void |
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252 | flush_padlist_cache () |
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253 | { |
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254 | HV *hv = padlist_cache; |
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255 | padlist_cache = newHV (); |
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256 | |
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257 | if (hv_iterinit (hv)) |
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258 | { |
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259 | HE *he; |
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260 | AV *padlist; |
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261 | |
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262 | while (!!(he = hv_iternext (hv))) |
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263 | { |
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264 | AV *av = (AV *)HeVAL(he); |
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265 | |
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266 | /* casting is fun. */ |
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267 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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268 | free_padlist (padlist); |
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269 | } |
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270 | } |
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271 | |
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272 | SvREFCNT_dec (hv); |
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273 | } |
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274 | #endif |
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275 | |
264 | |
276 | #define SB do { |
265 | #define SB do { |
277 | #define SE } while (0) |
266 | #define SE } while (0) |
278 | |
267 | |
279 | #define LOAD(state) load_state(aTHX_ (state)); |
268 | #define LOAD(state) load_state(aTHX_ (state)); |
280 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
269 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
281 | |
270 | |
282 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
271 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
283 | |
272 | |
284 | static void |
273 | static void |
285 | load_state(pTHX_ Coro__State c) |
274 | load_state(pTHX_ Coro__State c) |
286 | { |
275 | { |
287 | PL_dowarn = c->dowarn; |
276 | PL_dowarn = c->dowarn; |
… | |
… | |
291 | PL_curstack = c->curstack; |
280 | PL_curstack = c->curstack; |
292 | PL_mainstack = c->mainstack; |
281 | PL_mainstack = c->mainstack; |
293 | PL_stack_sp = c->stack_sp; |
282 | PL_stack_sp = c->stack_sp; |
294 | PL_op = c->op; |
283 | PL_op = c->op; |
295 | PL_curpad = c->curpad; |
284 | PL_curpad = c->curpad; |
|
|
285 | PL_comppad = c->comppad; |
|
|
286 | PL_compcv = c->compcv; |
296 | PL_stack_base = c->stack_base; |
287 | PL_stack_base = c->stack_base; |
297 | PL_stack_max = c->stack_max; |
288 | PL_stack_max = c->stack_max; |
298 | PL_tmps_stack = c->tmps_stack; |
289 | PL_tmps_stack = c->tmps_stack; |
299 | PL_tmps_floor = c->tmps_floor; |
290 | PL_tmps_floor = c->tmps_floor; |
300 | PL_tmps_ix = c->tmps_ix; |
291 | PL_tmps_ix = c->tmps_ix; |
… | |
… | |
306 | PL_scopestack_ix = c->scopestack_ix; |
297 | PL_scopestack_ix = c->scopestack_ix; |
307 | PL_scopestack_max = c->scopestack_max; |
298 | PL_scopestack_max = c->scopestack_max; |
308 | PL_savestack = c->savestack; |
299 | PL_savestack = c->savestack; |
309 | PL_savestack_ix = c->savestack_ix; |
300 | PL_savestack_ix = c->savestack_ix; |
310 | PL_savestack_max = c->savestack_max; |
301 | PL_savestack_max = c->savestack_max; |
|
|
302 | #if PERL_VERSION < 9 |
311 | PL_retstack = c->retstack; |
303 | PL_retstack = c->retstack; |
312 | PL_retstack_ix = c->retstack_ix; |
304 | PL_retstack_ix = c->retstack_ix; |
313 | PL_retstack_max = c->retstack_max; |
305 | PL_retstack_max = c->retstack_max; |
|
|
306 | #endif |
|
|
307 | PL_curpm = c->curpm; |
314 | PL_curcop = c->curcop; |
308 | PL_curcop = c->curcop; |
315 | PL_top_env = c->top_env; |
|
|
316 | |
309 | |
317 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
318 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
319 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
320 | |
313 | |
… | |
… | |
327 | { |
320 | { |
328 | AV *padlist = (AV *)POPs; |
321 | AV *padlist = (AV *)POPs; |
329 | |
322 | |
330 | if (padlist) |
323 | if (padlist) |
331 | { |
324 | { |
332 | put_padlist (cv); /* mark this padlist as available */ |
325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
333 | CvPADLIST(cv) = padlist; |
326 | CvPADLIST(cv) = padlist; |
334 | #ifdef USE_THREADS |
|
|
335 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
336 | #endif |
|
|
337 | } |
327 | } |
338 | |
328 | |
339 | ++CvDEPTH(cv); |
329 | ++CvDEPTH(cv); |
340 | } |
330 | } |
341 | |
331 | |
… | |
… | |
368 | if (CxTYPE(cx) == CXt_SUB) |
358 | if (CxTYPE(cx) == CXt_SUB) |
369 | { |
359 | { |
370 | CV *cv = cx->blk_sub.cv; |
360 | CV *cv = cx->blk_sub.cv; |
371 | if (CvDEPTH(cv)) |
361 | if (CvDEPTH(cv)) |
372 | { |
362 | { |
373 | #ifdef USE_THREADS |
|
|
374 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
375 | /*CvOWNER(cv) = 0;*/ |
|
|
376 | /*error must unlock this cv etc.. etc...*/ |
|
|
377 | #endif |
|
|
378 | EXTEND (SP, CvDEPTH(cv)*2); |
363 | EXTEND (SP, CvDEPTH(cv)*2); |
379 | |
364 | |
380 | while (--CvDEPTH(cv)) |
365 | while (--CvDEPTH(cv)) |
381 | { |
366 | { |
382 | /* this tells the restore code to increment CvDEPTH */ |
367 | /* this tells the restore code to increment CvDEPTH */ |
… | |
… | |
385 | } |
370 | } |
386 | |
371 | |
387 | PUSHs ((SV *)CvPADLIST(cv)); |
372 | PUSHs ((SV *)CvPADLIST(cv)); |
388 | PUSHs ((SV *)cv); |
373 | PUSHs ((SV *)cv); |
389 | |
374 | |
390 | get_padlist (cv); /* this is a monster */ |
375 | get_padlist (aTHX_ cv); |
391 | } |
376 | } |
392 | } |
377 | } |
|
|
378 | #ifdef CXt_FORMAT |
393 | else if (CxTYPE(cx) == CXt_FORMAT) |
379 | else if (CxTYPE(cx) == CXt_FORMAT) |
394 | { |
380 | { |
395 | /* I never used formats, so how should I know how these are implemented? */ |
381 | /* I never used formats, so how should I know how these are implemented? */ |
396 | /* my bold guess is as a simple, plain sub... */ |
382 | /* my bold guess is as a simple, plain sub... */ |
397 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
383 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
398 | } |
384 | } |
|
|
385 | #endif |
399 | } |
386 | } |
400 | |
387 | |
401 | if (top_si->si_type == PERLSI_MAIN) |
388 | if (top_si->si_type == PERLSI_MAIN) |
402 | break; |
389 | break; |
403 | |
390 | |
… | |
… | |
420 | c->curstack = PL_curstack; |
407 | c->curstack = PL_curstack; |
421 | c->mainstack = PL_mainstack; |
408 | c->mainstack = PL_mainstack; |
422 | c->stack_sp = PL_stack_sp; |
409 | c->stack_sp = PL_stack_sp; |
423 | c->op = PL_op; |
410 | c->op = PL_op; |
424 | c->curpad = PL_curpad; |
411 | c->curpad = PL_curpad; |
|
|
412 | c->comppad = PL_comppad; |
|
|
413 | c->compcv = PL_compcv; |
425 | c->stack_base = PL_stack_base; |
414 | c->stack_base = PL_stack_base; |
426 | c->stack_max = PL_stack_max; |
415 | c->stack_max = PL_stack_max; |
427 | c->tmps_stack = PL_tmps_stack; |
416 | c->tmps_stack = PL_tmps_stack; |
428 | c->tmps_floor = PL_tmps_floor; |
417 | c->tmps_floor = PL_tmps_floor; |
429 | c->tmps_ix = PL_tmps_ix; |
418 | c->tmps_ix = PL_tmps_ix; |
… | |
… | |
435 | c->scopestack_ix = PL_scopestack_ix; |
424 | c->scopestack_ix = PL_scopestack_ix; |
436 | c->scopestack_max = PL_scopestack_max; |
425 | c->scopestack_max = PL_scopestack_max; |
437 | c->savestack = PL_savestack; |
426 | c->savestack = PL_savestack; |
438 | c->savestack_ix = PL_savestack_ix; |
427 | c->savestack_ix = PL_savestack_ix; |
439 | c->savestack_max = PL_savestack_max; |
428 | c->savestack_max = PL_savestack_max; |
|
|
429 | #if PERL_VERSION < 9 |
440 | c->retstack = PL_retstack; |
430 | c->retstack = PL_retstack; |
441 | c->retstack_ix = PL_retstack_ix; |
431 | c->retstack_ix = PL_retstack_ix; |
442 | c->retstack_max = PL_retstack_max; |
432 | c->retstack_max = PL_retstack_max; |
|
|
433 | #endif |
|
|
434 | c->curpm = PL_curpm; |
443 | c->curcop = PL_curcop; |
435 | c->curcop = PL_curcop; |
444 | c->top_env = PL_top_env; |
|
|
445 | } |
436 | } |
446 | |
437 | |
447 | /* |
438 | /* |
448 | * allocate various perl stacks. This is an exact copy |
439 | * allocate various perl stacks. This is an exact copy |
449 | * of perl.c:init_stacks, except that it uses less memory |
440 | * of perl.c:init_stacks, except that it uses less memory |
450 | * on the assumption that coroutines do not usually need |
441 | * on the (sometimes correct) assumption that coroutines do |
451 | * a lot of stackspace. |
442 | * not usually need a lot of stackspace. |
452 | */ |
443 | */ |
453 | STATIC void |
444 | static void |
454 | coro_init_stacks (pTHX) |
445 | coro_init_stacks (pTHX) |
455 | { |
446 | { |
|
|
447 | LOCK; |
|
|
448 | |
456 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
449 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
457 | PL_curstackinfo->si_type = PERLSI_MAIN; |
450 | PL_curstackinfo->si_type = PERLSI_MAIN; |
458 | PL_curstack = PL_curstackinfo->si_stack; |
451 | PL_curstack = PL_curstackinfo->si_stack; |
459 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
460 | |
453 | |
… | |
… | |
469 | |
462 | |
470 | New(54,PL_markstack,16,I32); |
463 | New(54,PL_markstack,16,I32); |
471 | PL_markstack_ptr = PL_markstack; |
464 | PL_markstack_ptr = PL_markstack; |
472 | PL_markstack_max = PL_markstack + 16; |
465 | PL_markstack_max = PL_markstack + 16; |
473 | |
466 | |
|
|
467 | #ifdef SET_MARK_OFFSET |
474 | SET_MARK_OFFSET; |
468 | SET_MARK_OFFSET; |
|
|
469 | #endif |
475 | |
470 | |
476 | New(54,PL_scopestack,16,I32); |
471 | New(54,PL_scopestack,16,I32); |
477 | PL_scopestack_ix = 0; |
472 | PL_scopestack_ix = 0; |
478 | PL_scopestack_max = 16; |
473 | PL_scopestack_max = 16; |
479 | |
474 | |
480 | New(54,PL_savestack,96,ANY); |
475 | New(54,PL_savestack,96,ANY); |
481 | PL_savestack_ix = 0; |
476 | PL_savestack_ix = 0; |
482 | PL_savestack_max = 96; |
477 | PL_savestack_max = 96; |
483 | |
478 | |
|
|
479 | #if PERL_VERSION < 9 |
484 | New(54,PL_retstack,8,OP*); |
480 | New(54,PL_retstack,8,OP*); |
485 | PL_retstack_ix = 0; |
481 | PL_retstack_ix = 0; |
486 | PL_retstack_max = 8; |
482 | PL_retstack_max = 8; |
|
|
483 | #endif |
|
|
484 | |
|
|
485 | UNLOCK; |
487 | } |
486 | } |
488 | |
487 | |
489 | /* |
488 | /* |
490 | * destroy the stacks, the callchain etc... |
489 | * destroy the stacks, the callchain etc... |
491 | * still there is a memleak of 128 bytes... |
|
|
492 | */ |
490 | */ |
493 | STATIC void |
491 | static void |
494 | destroy_stacks(pTHX) |
492 | destroy_stacks(pTHX) |
495 | { |
493 | { |
496 | if (!IN_DESTRUCT) |
494 | if (!IN_DESTRUCT) |
497 | { |
495 | { |
498 | /* is this ugly, I ask? */ |
496 | /* is this ugly, I ask? */ |
499 | while (PL_scopestack_ix) |
497 | LEAVE_SCOPE (0); |
500 | LEAVE; |
|
|
501 | |
498 | |
502 | /* sure it is, but more important: is it correct?? :/ */ |
499 | /* 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; |
500 | FREETMPS; |
|
|
501 | |
|
|
502 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
505 | } |
503 | } |
506 | |
504 | |
507 | while (PL_curstackinfo->si_next) |
505 | while (PL_curstackinfo->si_next) |
508 | PL_curstackinfo = PL_curstackinfo->si_next; |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
509 | |
507 | |
510 | while (PL_curstackinfo) |
508 | while (PL_curstackinfo) |
511 | { |
509 | { |
512 | PERL_SI *p = PL_curstackinfo->si_prev; |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
513 | |
511 | |
514 | { |
512 | { /*D*//*remove*/ |
515 | dSP; |
513 | dSP; |
516 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
517 | PUTBACK; /* possibly superfluous */ |
515 | PUTBACK; /* possibly superfluous */ |
518 | } |
516 | } |
519 | |
517 | |
520 | if (!IN_DESTRUCT) |
518 | if (!IN_DESTRUCT) |
521 | { |
519 | { |
522 | dounwind(-1); |
520 | dounwind (-1);/*D*//*remove*/ |
523 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
524 | } |
522 | } |
525 | |
523 | |
526 | Safefree(PL_curstackinfo->si_cxstack); |
524 | Safefree (PL_curstackinfo->si_cxstack); |
527 | Safefree(PL_curstackinfo); |
525 | Safefree (PL_curstackinfo); |
528 | PL_curstackinfo = p; |
526 | PL_curstackinfo = p; |
529 | } |
527 | } |
530 | |
528 | |
531 | Safefree(PL_tmps_stack); |
529 | Safefree (PL_tmps_stack); |
532 | Safefree(PL_markstack); |
530 | Safefree (PL_markstack); |
533 | Safefree(PL_scopestack); |
531 | Safefree (PL_scopestack); |
534 | Safefree(PL_savestack); |
532 | Safefree (PL_savestack); |
|
|
533 | #if PERL_VERSION < 9 |
535 | Safefree(PL_retstack); |
534 | Safefree (PL_retstack); |
536 | } |
|
|
537 | |
|
|
538 | static void |
|
|
539 | allocate_stack (Coro__State ctx, int alloc) |
|
|
540 | { |
|
|
541 | coro_stack *stack; |
|
|
542 | |
|
|
543 | New (0, stack, 1, coro_stack); |
|
|
544 | |
|
|
545 | stack->refcnt = 1; |
|
|
546 | stack->usecnt = 1; |
|
|
547 | stack->gencnt = ctx->gencnt = 0; |
|
|
548 | if (alloc) |
|
|
549 | { |
|
|
550 | #if HAVE_MMAP |
|
|
551 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
552 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
553 | if (stack->sptr == (void *)-1) |
|
|
554 | #endif |
535 | #endif |
555 | { |
|
|
556 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
557 | stack->ssize = -4096 * sizeof (long); |
|
|
558 | New (0, stack->sptr, 4096, long); |
|
|
559 | } |
|
|
560 | } |
|
|
561 | else |
|
|
562 | stack->sptr = 0; |
|
|
563 | |
|
|
564 | ctx->stack = stack; |
|
|
565 | } |
536 | } |
566 | |
537 | |
567 | static void |
538 | static void |
568 | deallocate_stack (Coro__State ctx) |
539 | setup_coro (struct coro *coro) |
569 | { |
|
|
570 | coro_stack *stack = ctx->stack; |
|
|
571 | |
|
|
572 | ctx->stack = 0; |
|
|
573 | |
|
|
574 | if (stack) |
|
|
575 | { |
|
|
576 | if (!--stack->refcnt) |
|
|
577 | { |
|
|
578 | #ifdef HAVE_MMAP |
|
|
579 | if (stack->ssize > 0 && stack->sptr) |
|
|
580 | munmap (stack->sptr, stack->ssize); |
|
|
581 | else |
|
|
582 | #else |
|
|
583 | Safefree (stack->sptr); |
|
|
584 | #endif |
|
|
585 | Safefree (stack); |
|
|
586 | } |
|
|
587 | else if (ctx->gencnt == stack->gencnt) |
|
|
588 | --stack->usecnt; |
|
|
589 | } |
|
|
590 | } |
|
|
591 | |
|
|
592 | static void |
|
|
593 | setup_coro (void *arg) |
|
|
594 | { |
540 | { |
595 | /* |
541 | /* |
596 | * emulate part of the perl startup here. |
542 | * emulate part of the perl startup here. |
597 | */ |
543 | */ |
|
|
544 | dTHX; |
598 | dSP; |
545 | dSP; |
599 | Coro__State ctx = (Coro__State)arg; |
546 | UNOP myop; |
600 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
547 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
601 | |
548 | |
602 | coro_init_stacks (aTHX); |
549 | coro_init_stacks (aTHX); |
603 | /*PL_curcop = 0;*/ |
550 | /*PL_curcop = 0;*/ |
604 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
551 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
605 | SvREFCNT_dec (GvAV (PL_defgv)); |
552 | SvREFCNT_dec (GvAV (PL_defgv)); |
606 | GvAV (PL_defgv) = ctx->args; |
553 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
607 | |
554 | |
608 | SPAGAIN; |
555 | SPAGAIN; |
609 | |
556 | |
610 | if (ctx->stack) |
|
|
611 | { |
|
|
612 | ctx->cursp = 0; |
|
|
613 | |
|
|
614 | PUSHMARK(SP); |
|
|
615 | PUTBACK; |
|
|
616 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
617 | |
|
|
618 | if (SvTRUE (ERRSV)) |
|
|
619 | croak (NULL); |
|
|
620 | else |
|
|
621 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
622 | } |
|
|
623 | else |
|
|
624 | { |
|
|
625 | UNOP myop; |
|
|
626 | |
|
|
627 | PL_op = (OP *)&myop; |
|
|
628 | |
|
|
629 | Zero(&myop, 1, UNOP); |
557 | Zero (&myop, 1, UNOP); |
630 | myop.op_next = Nullop; |
558 | myop.op_next = Nullop; |
631 | myop.op_flags = OPf_WANT_VOID; |
559 | myop.op_flags = OPf_WANT_VOID; |
632 | |
560 | |
|
|
561 | PL_op = (OP *)&myop; |
|
|
562 | |
633 | PUSHMARK(SP); |
563 | PUSHMARK(SP); |
634 | XPUSHs (sub_init); |
564 | XPUSHs (sub_init); |
635 | /* |
|
|
636 | * the next line is slightly wrong, as PL_op->op_next |
|
|
637 | * is actually being executed so we skip the first op. |
|
|
638 | * that doesn't matter, though, since it is only |
|
|
639 | * pp_nextstate and we never return... |
|
|
640 | * ah yes, and I don't care anyways ;) |
|
|
641 | */ |
|
|
642 | PUTBACK; |
565 | PUTBACK; |
643 | PL_op = pp_entersub(); |
566 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
644 | SPAGAIN; |
567 | SPAGAIN; |
645 | |
568 | |
646 | ENTER; /* necessary e.g. for dounwind */ |
569 | ENTER; /* necessary e.g. for dounwind */ |
647 | } |
|
|
648 | } |
570 | } |
649 | |
571 | |
650 | static void |
572 | static void |
651 | continue_coro (void *arg) |
573 | free_coro_mortal () |
652 | { |
574 | { |
653 | /* |
|
|
654 | * this is a _very_ stripped down perl interpreter ;) |
|
|
655 | */ |
|
|
656 | Coro__State ctx = (Coro__State)arg; |
|
|
657 | JMPENV coro_start_env; |
|
|
658 | |
|
|
659 | /* same as JMPENV_BOOTSTRAP */ |
|
|
660 | Zero(&coro_start_env, 1, JMPENV); |
|
|
661 | coro_start_env.je_ret = -1; |
|
|
662 | coro_start_env.je_mustcatch = TRUE; |
|
|
663 | PL_top_env = &coro_start_env; |
|
|
664 | |
|
|
665 | ctx->cursp = 0; |
|
|
666 | PL_op = PL_op->op_next; |
|
|
667 | CALLRUNOPS(aTHX); |
|
|
668 | |
|
|
669 | abort (); |
|
|
670 | } |
|
|
671 | |
|
|
672 | STATIC void |
|
|
673 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
674 | { |
|
|
675 | dSTACKLEVEL; |
|
|
676 | static struct coro *xnext; |
|
|
677 | |
|
|
678 | if (prev != next) |
|
|
679 | { |
|
|
680 | xnext = next; |
|
|
681 | |
|
|
682 | if (next->mainstack) |
|
|
683 | { |
|
|
684 | SAVE (prev, flags); |
|
|
685 | LOAD (next); |
|
|
686 | |
|
|
687 | /* mark this state as in-use */ |
|
|
688 | next->mainstack = 0; |
|
|
689 | next->tmps_ix = -2; |
|
|
690 | |
|
|
691 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
692 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
693 | { |
|
|
694 | if (!prev->stack) |
|
|
695 | allocate_stack (prev, 0); |
|
|
696 | else if (prev->cursp != stacklevel |
|
|
697 | && prev->stack->usecnt > 1) |
|
|
698 | { |
|
|
699 | prev->gencnt = ++prev->stack->gencnt; |
|
|
700 | prev->stack->usecnt = 1; |
|
|
701 | } |
|
|
702 | |
|
|
703 | /* has our stack been invalidated? */ |
|
|
704 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
705 | { |
|
|
706 | deallocate_stack (next); |
|
|
707 | allocate_stack (next, 1); |
|
|
708 | coro_create (&(next->stack->cctx), |
|
|
709 | continue_coro, (void *)next, |
|
|
710 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
711 | } |
|
|
712 | |
|
|
713 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
714 | /* don't add any code here */ |
|
|
715 | } |
|
|
716 | |
|
|
717 | } |
|
|
718 | else if (next->tmps_ix == -2) |
|
|
719 | croak ("tried to transfer to running coroutine"); |
|
|
720 | else |
|
|
721 | { |
|
|
722 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
723 | |
|
|
724 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
725 | { |
|
|
726 | if (!prev->stack) |
|
|
727 | allocate_stack (prev, 0); |
|
|
728 | |
|
|
729 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
730 | { |
|
|
731 | setup_coro (next); |
|
|
732 | |
|
|
733 | prev->stack->refcnt++; |
|
|
734 | prev->stack->usecnt++; |
|
|
735 | next->stack = prev->stack; |
|
|
736 | next->gencnt = prev->gencnt; |
|
|
737 | } |
|
|
738 | else |
|
|
739 | { |
|
|
740 | allocate_stack (next, 1); |
|
|
741 | coro_create (&(next->stack->cctx), |
|
|
742 | setup_coro, (void *)next, |
|
|
743 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
744 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
745 | /* don't add any code here */ |
|
|
746 | } |
|
|
747 | } |
|
|
748 | else |
|
|
749 | setup_coro (next); |
|
|
750 | } |
|
|
751 | |
|
|
752 | /* |
|
|
753 | * xnext is now either prev or next, depending on wether |
|
|
754 | * we switched the c stack or not. that's why i use a global |
|
|
755 | * variable, that should become thread-specific at one point. |
|
|
756 | */ |
|
|
757 | xnext->cursp = stacklevel; |
|
|
758 | } |
|
|
759 | |
|
|
760 | if (coro_mortal) |
575 | if (coro_mortal) |
761 | { |
576 | { |
762 | SvREFCNT_dec (coro_mortal); |
577 | SvREFCNT_dec (coro_mortal); |
763 | coro_mortal = 0; |
578 | coro_mortal = 0; |
764 | } |
579 | } |
765 | } |
580 | } |
766 | |
581 | |
767 | #define SV_CORO(sv,func) \ |
582 | static void |
768 | do { \ |
583 | coro_run (void *arg) |
769 | if (SvROK (sv)) \ |
584 | { |
770 | sv = SvRV (sv); \ |
585 | /* |
771 | \ |
586 | * this is a _very_ stripped down perl interpreter ;) |
772 | if (SvTYPE(sv) == SVt_PVHV) \ |
587 | */ |
773 | { \ |
588 | dTHX; |
774 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
589 | PL_top_env = &PL_start_env; |
775 | \ |
|
|
776 | if (!he) \ |
|
|
777 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
778 | \ |
|
|
779 | (sv) = SvRV (HeVAL(he)); \ |
|
|
780 | } \ |
|
|
781 | \ |
|
|
782 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
783 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
784 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
785 | \ |
|
|
786 | } while(0) |
|
|
787 | |
590 | |
788 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
591 | UNLOCK; |
789 | |
592 | |
|
|
593 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
|
|
594 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
|
|
595 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
596 | |
|
|
597 | /* somebody will hit me for both perl_run and PL_restart_op */ |
|
|
598 | perl_run (aTHX_ PERL_GET_CONTEXT); |
|
|
599 | |
|
|
600 | abort (); |
|
|
601 | } |
|
|
602 | |
|
|
603 | static coro_stack * |
|
|
604 | stack_new () |
|
|
605 | { |
|
|
606 | coro_stack *stack; |
|
|
607 | |
|
|
608 | New (0, stack, 1, coro_stack); |
|
|
609 | |
|
|
610 | #if HAVE_MMAP |
|
|
611 | |
|
|
612 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
|
|
613 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
614 | |
|
|
615 | if (stack->sptr == (void *)-1) |
|
|
616 | { |
|
|
617 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
618 | _exit (EXIT_FAILURE); |
|
|
619 | } |
|
|
620 | |
|
|
621 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
622 | |
|
|
623 | #else |
|
|
624 | |
|
|
625 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
626 | New (0, stack->sptr, STACKSIZE, long); |
|
|
627 | |
|
|
628 | if (!stack->sptr) |
|
|
629 | { |
|
|
630 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
631 | _exit (EXIT_FAILURE); |
|
|
632 | } |
|
|
633 | |
|
|
634 | #endif |
|
|
635 | |
|
|
636 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
637 | |
|
|
638 | return stack; |
|
|
639 | } |
|
|
640 | |
|
|
641 | static void |
|
|
642 | stack_free (coro_stack *stack) |
|
|
643 | { |
|
|
644 | if (!stack || stack == main_stack) |
|
|
645 | return; |
|
|
646 | |
|
|
647 | #if HAVE_MMAP |
|
|
648 | munmap (stack->sptr, stack->ssize); |
|
|
649 | #else |
|
|
650 | Safefree (stack->sptr); |
|
|
651 | #endif |
|
|
652 | |
|
|
653 | Safefree (stack); |
|
|
654 | } |
|
|
655 | |
|
|
656 | static coro_stack *stack_first; |
|
|
657 | |
|
|
658 | static coro_stack * |
|
|
659 | stack_get () |
|
|
660 | { |
|
|
661 | coro_stack *stack; |
|
|
662 | |
|
|
663 | if (stack_first) |
|
|
664 | { |
|
|
665 | stack = stack_first; |
|
|
666 | stack_first = stack->next; |
|
|
667 | } |
|
|
668 | else |
|
|
669 | { |
|
|
670 | stack = stack_new (); |
|
|
671 | PL_op = PL_op->op_next; |
|
|
672 | } |
|
|
673 | |
|
|
674 | return stack; |
|
|
675 | } |
|
|
676 | |
|
|
677 | static void |
|
|
678 | stack_put (coro_stack *stack) |
|
|
679 | { |
|
|
680 | stack->next = stack_first; |
|
|
681 | stack_first = stack; |
|
|
682 | } |
|
|
683 | |
|
|
684 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
685 | static void |
|
|
686 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
687 | { |
|
|
688 | dSTACKLEVEL; |
|
|
689 | |
|
|
690 | /* sometimes transfer is only called to set idle_sp */ |
|
|
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
692 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
|
|
693 | else if (prev != next) |
|
|
694 | { |
|
|
695 | coro_stack *prev__stack; |
|
|
696 | |
|
|
697 | LOCK; |
|
|
698 | |
|
|
699 | if (next->mainstack) |
|
|
700 | { |
|
|
701 | /* coroutine already started */ |
|
|
702 | SAVE (prev, flags); |
|
|
703 | LOAD (next); |
|
|
704 | } |
|
|
705 | else |
|
|
706 | { |
|
|
707 | /* need to start coroutine */ |
|
|
708 | /* first get rid of the old state */ |
|
|
709 | SAVE (prev, -1); |
|
|
710 | /* setup coroutine call */ |
|
|
711 | setup_coro (next); |
|
|
712 | /* need a stack */ |
|
|
713 | next->stack = 0; |
|
|
714 | } |
|
|
715 | |
|
|
716 | prev__stack = prev->stack; |
|
|
717 | |
|
|
718 | /* possibly "free" the stack */ |
|
|
719 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
720 | { |
|
|
721 | stack_put (prev__stack); |
|
|
722 | prev->stack = 0; |
|
|
723 | } |
|
|
724 | |
|
|
725 | if (!next->stack) |
|
|
726 | next->stack = stack_get (); |
|
|
727 | |
|
|
728 | if (prev__stack != next->stack) |
|
|
729 | { |
|
|
730 | prev__stack->top_env = PL_top_env; |
|
|
731 | PL_top_env = next->stack->top_env; |
|
|
732 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
733 | } |
|
|
734 | |
|
|
735 | free_coro_mortal (); |
|
|
736 | |
|
|
737 | UNLOCK; |
|
|
738 | } |
|
|
739 | } |
|
|
740 | |
|
|
741 | /* use this function pointer to call the above function */ |
|
|
742 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
743 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
744 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
745 | |
|
|
746 | struct transfer_args |
|
|
747 | { |
|
|
748 | struct coro *prev, *next; |
|
|
749 | int flags; |
|
|
750 | }; |
|
|
751 | |
|
|
752 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
753 | |
|
|
754 | static void |
|
|
755 | coro_state_destroy (struct coro *coro) |
|
|
756 | { |
|
|
757 | if (coro->refcnt--) |
|
|
758 | return; |
|
|
759 | |
|
|
760 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
761 | { |
|
|
762 | struct coro temp; |
|
|
763 | |
|
|
764 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
765 | LOAD (aTHX_ coro); |
|
|
766 | |
|
|
767 | destroy_stacks (aTHX); |
|
|
768 | |
|
|
769 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
770 | |
|
|
771 | coro->mainstack = 0; |
|
|
772 | } |
|
|
773 | |
|
|
774 | stack_free (coro->stack); |
|
|
775 | SvREFCNT_dec (coro->args); |
|
|
776 | Safefree (coro); |
|
|
777 | } |
|
|
778 | |
790 | static void |
779 | static int |
|
|
780 | coro_state_clear (SV *sv, MAGIC *mg) |
|
|
781 | { |
|
|
782 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
783 | mg->mg_ptr = 0; |
|
|
784 | |
|
|
785 | coro_state_destroy (coro); |
|
|
786 | |
|
|
787 | return 0; |
|
|
788 | } |
|
|
789 | |
|
|
790 | static int |
|
|
791 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
|
|
792 | { |
|
|
793 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
794 | |
|
|
795 | ++coro->refcnt; |
|
|
796 | |
|
|
797 | return 0; |
|
|
798 | } |
|
|
799 | |
|
|
800 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
801 | |
|
|
802 | static struct coro * |
|
|
803 | SvSTATE (SV *coro) |
|
|
804 | { |
|
|
805 | HV *stash; |
|
|
806 | MAGIC *mg; |
|
|
807 | |
|
|
808 | if (SvROK (coro)) |
|
|
809 | coro = SvRV (coro); |
|
|
810 | |
|
|
811 | stash = SvSTASH (coro); |
|
|
812 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
813 | { |
|
|
814 | /* very slow, but rare, check */ |
|
|
815 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
816 | croak ("Coro::State object required"); |
|
|
817 | } |
|
|
818 | |
|
|
819 | mg = SvMAGIC (coro); |
|
|
820 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
821 | return (struct coro *)mg->mg_ptr; |
|
|
822 | } |
|
|
823 | |
|
|
824 | static void |
|
|
825 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
826 | { |
|
|
827 | ta->prev = SvSTATE (prev); |
|
|
828 | ta->next = SvSTATE (next); |
|
|
829 | ta->flags = flags; |
|
|
830 | } |
|
|
831 | |
|
|
832 | static void |
791 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
833 | api_transfer (SV *prev, SV *next, int flags) |
792 | { |
834 | { |
793 | SV_CORO (prev, "Coro::transfer"); |
835 | dTHX; |
794 | SV_CORO (next, "Coro::transfer"); |
836 | struct transfer_args ta; |
795 | |
837 | |
796 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
838 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
|
|
839 | TRANSFER (ta); |
797 | } |
840 | } |
798 | |
841 | |
799 | /** Coro ********************************************************************/ |
842 | /** Coro ********************************************************************/ |
800 | |
843 | |
801 | #define PRIO_MAX 3 |
844 | #define PRIO_MAX 3 |
… | |
… | |
805 | #define PRIO_IDLE -3 |
848 | #define PRIO_IDLE -3 |
806 | #define PRIO_MIN -4 |
849 | #define PRIO_MIN -4 |
807 | |
850 | |
808 | /* for Coro.pm */ |
851 | /* for Coro.pm */ |
809 | static GV *coro_current, *coro_idle; |
852 | static GV *coro_current, *coro_idle; |
810 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
853 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
811 | static int coro_nready; |
854 | static int coro_nready; |
812 | |
855 | |
813 | static void |
856 | static void |
814 | coro_enq (SV *sv) |
857 | coro_enq (pTHX_ SV *sv) |
815 | { |
858 | { |
|
|
859 | int prio; |
|
|
860 | |
816 | if (SvTYPE (sv) == SVt_PVHV) |
861 | if (SvTYPE (sv) != SVt_PVHV) |
817 | { |
|
|
818 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
819 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
820 | |
|
|
821 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
822 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
823 | : prio; |
|
|
824 | |
|
|
825 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
826 | coro_nready++; |
|
|
827 | |
|
|
828 | return; |
|
|
829 | } |
|
|
830 | |
|
|
831 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
862 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
863 | |
|
|
864 | prio = SvSTATE (sv)->prio; |
|
|
865 | |
|
|
866 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
867 | coro_nready++; |
832 | } |
868 | } |
833 | |
869 | |
834 | static SV * |
870 | static SV * |
835 | coro_deq (int min_prio) |
871 | coro_deq (pTHX_ int min_prio) |
836 | { |
872 | { |
837 | int prio = PRIO_MAX - PRIO_MIN; |
873 | int prio = PRIO_MAX - PRIO_MIN; |
838 | |
874 | |
839 | min_prio -= PRIO_MIN; |
875 | min_prio -= PRIO_MIN; |
840 | if (min_prio < 0) |
876 | if (min_prio < 0) |
841 | min_prio = 0; |
877 | min_prio = 0; |
842 | |
878 | |
843 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
879 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
844 | if (av_len (coro_ready[prio]) >= 0) |
880 | if (AvFILLp (coro_ready [prio]) >= 0) |
845 | { |
881 | { |
846 | coro_nready--; |
882 | coro_nready--; |
847 | return av_shift (coro_ready[prio]); |
883 | return av_shift (coro_ready [prio]); |
848 | } |
884 | } |
849 | |
885 | |
850 | return 0; |
886 | return 0; |
851 | } |
887 | } |
852 | |
888 | |
853 | static void |
889 | static void |
854 | api_ready (SV *coro) |
890 | api_ready (SV *coro) |
855 | { |
891 | { |
|
|
892 | dTHX; |
|
|
893 | |
856 | if (SvROK (coro)) |
894 | if (SvROK (coro)) |
857 | coro = SvRV (coro); |
895 | coro = SvRV (coro); |
858 | |
896 | |
|
|
897 | LOCK; |
859 | coro_enq (SvREFCNT_inc (coro)); |
898 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
899 | UNLOCK; |
|
|
900 | } |
|
|
901 | |
|
|
902 | static void |
|
|
903 | prepare_schedule (aTHX_ struct transfer_args *ta) |
|
|
904 | { |
|
|
905 | SV *current, *prev, *next; |
|
|
906 | |
|
|
907 | LOCK; |
|
|
908 | |
|
|
909 | current = GvSV (coro_current); |
|
|
910 | |
|
|
911 | for (;;) |
|
|
912 | { |
|
|
913 | LOCK; |
|
|
914 | |
|
|
915 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
916 | |
|
|
917 | if (next) |
|
|
918 | break; |
|
|
919 | |
|
|
920 | UNLOCK; |
|
|
921 | |
|
|
922 | { |
|
|
923 | dSP; |
|
|
924 | |
|
|
925 | ENTER; |
|
|
926 | SAVETMPS; |
|
|
927 | |
|
|
928 | PUSHMARK (SP); |
|
|
929 | PUTBACK; |
|
|
930 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
931 | |
|
|
932 | FREETMPS; |
|
|
933 | LEAVE; |
|
|
934 | } |
|
|
935 | } |
|
|
936 | |
|
|
937 | prev = SvRV (current); |
|
|
938 | SvRV (current) = next; |
|
|
939 | |
|
|
940 | /* free this only after the transfer */ |
|
|
941 | free_coro_mortal (); |
|
|
942 | coro_mortal = prev; |
|
|
943 | |
|
|
944 | ta->prev = SvSTATE (prev); |
|
|
945 | ta->next = SvSTATE (next); |
|
|
946 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
947 | |
|
|
948 | UNLOCK; |
|
|
949 | } |
|
|
950 | |
|
|
951 | static void |
|
|
952 | prepare_cede (aTHX_ struct transfer_args *ta) |
|
|
953 | { |
|
|
954 | LOCK; |
|
|
955 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
956 | UNLOCK; |
|
|
957 | |
|
|
958 | prepare_schedule (ta); |
860 | } |
959 | } |
861 | |
960 | |
862 | static void |
961 | static void |
863 | api_schedule (void) |
962 | api_schedule (void) |
864 | { |
963 | { |
865 | SV *prev, *next; |
964 | dTHX; |
|
|
965 | struct transfer_args ta; |
866 | |
966 | |
867 | prev = SvRV (GvSV (coro_current)); |
967 | prepare_schedule (&ta); |
868 | next = coro_deq (PRIO_MIN); |
968 | TRANSFER (ta); |
869 | |
|
|
870 | if (!next) |
|
|
871 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
872 | |
|
|
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 | } |
969 | } |
883 | |
970 | |
884 | static void |
971 | static void |
885 | api_cede (void) |
972 | api_cede (void) |
886 | { |
973 | { |
887 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
974 | dTHX; |
|
|
975 | struct transfer_args ta; |
888 | |
976 | |
889 | api_schedule (); |
977 | prepare_cede (&ta); |
|
|
978 | TRANSFER (ta); |
890 | } |
979 | } |
891 | |
980 | |
892 | MODULE = Coro::State PACKAGE = Coro::State |
981 | MODULE = Coro::State PACKAGE = Coro::State |
893 | |
982 | |
894 | PROTOTYPES: ENABLE |
983 | PROTOTYPES: DISABLE |
895 | |
984 | |
896 | BOOT: |
985 | BOOT: |
897 | { /* {} necessary for stoopid perl-5.6.x */ |
986 | { |
898 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
987 | #ifdef USE_ITHREADS |
899 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
988 | MUTEX_INIT (&coro_mutex); |
|
|
989 | #endif |
|
|
990 | BOOT_PAGESIZE; |
|
|
991 | |
900 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
992 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
901 | |
993 | |
902 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
994 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
903 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
995 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
904 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
996 | 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 | |
997 | |
910 | main_mainstack = PL_mainstack; |
998 | main_mainstack = PL_mainstack; |
911 | |
999 | |
912 | coroapi.ver = CORO_API_VERSION; |
1000 | coroapi.ver = CORO_API_VERSION; |
913 | coroapi.transfer = api_transfer; |
1001 | coroapi.transfer = api_transfer; |
914 | } |
|
|
915 | |
1002 | |
916 | Coro::State |
1003 | Newz (0, main_stack, 1, coro_stack); |
917 | _newprocess(args) |
1004 | main_stack->idle_sp = (void *)-1; |
918 | SV * args |
1005 | |
919 | PROTOTYPE: $ |
1006 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
1007 | } |
|
|
1008 | |
|
|
1009 | SV * |
|
|
1010 | new (char *klass, ...) |
920 | CODE: |
1011 | CODE: |
921 | Coro__State coro; |
1012 | { |
|
|
1013 | struct coro *coro; |
|
|
1014 | HV *hv; |
|
|
1015 | int i; |
922 | |
1016 | |
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); |
1017 | Newz (0, coro, 1, struct coro); |
|
|
1018 | coro->args = newAV (); |
927 | |
1019 | |
928 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1020 | hv = newHV (); |
|
|
1021 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1022 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1023 | |
|
|
1024 | for (i = 1; i < items; i++) |
|
|
1025 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1026 | |
|
|
1027 | coro->stack = main_stack; |
929 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1028 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
930 | coro->stack = 0; |
1029 | /*coro->stack = 0;*/ |
931 | |
1030 | } |
932 | RETVAL = coro; |
|
|
933 | OUTPUT: |
1031 | OUTPUT: |
934 | RETVAL |
1032 | RETVAL |
935 | |
1033 | |
936 | void |
1034 | void |
937 | transfer(prev, next, flags) |
1035 | transfer (...) |
938 | SV *prev |
1036 | ALIAS: |
939 | SV *next |
1037 | Coro::schedule = 1 |
940 | int flags |
1038 | Coro::cede = 2 |
941 | PROTOTYPE: @ |
1039 | _set_stacklevel = 3 |
942 | CODE: |
1040 | CODE: |
943 | PUTBACK; |
1041 | { |
944 | SV_CORO (next, "Coro::transfer"); |
1042 | struct transfer_args ta; |
945 | SV_CORO (prev, "Coro::transfer"); |
1043 | |
946 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1044 | switch (ix) |
947 | SPAGAIN; |
1045 | { |
|
|
1046 | case 0: |
|
|
1047 | if (items != 3) |
|
|
1048 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1049 | |
|
|
1050 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1051 | break; |
|
|
1052 | |
|
|
1053 | case 1: |
|
|
1054 | prepare_schedule (&ta); |
|
|
1055 | break; |
|
|
1056 | |
|
|
1057 | case 2: |
|
|
1058 | prepare_cede (&ta); |
|
|
1059 | break; |
|
|
1060 | |
|
|
1061 | case 3: |
|
|
1062 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1063 | ta.next = 0; |
|
|
1064 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1065 | break; |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | TRANSFER (ta); |
|
|
1069 | } |
948 | |
1070 | |
949 | void |
1071 | void |
950 | DESTROY(coro) |
1072 | _clone_state_from (SV *dst, SV *src) |
951 | Coro::State coro |
1073 | CODE: |
952 | CODE: |
1074 | { |
|
|
1075 | struct coro *coro_src = SvSTATE (src); |
953 | |
1076 | |
954 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1077 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
955 | { |
|
|
956 | struct coro temp; |
|
|
957 | |
1078 | |
958 | PUTBACK; |
1079 | ++coro_src->refcnt; |
959 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1080 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
960 | LOAD(aTHX_ coro); |
1081 | } |
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 | |
1082 | |
975 | void |
1083 | void |
976 | flush() |
1084 | _nonlocal_goto (IV nextop) |
977 | CODE: |
1085 | CODE: |
978 | #ifdef MAY_FLUSH |
1086 | /* uuh, somebody will kill me again for this */ |
979 | flush_padlist_cache (); |
1087 | PL_op->op_next = INT2PTR (OP *, nextop); |
980 | #endif |
|
|
981 | |
1088 | |
982 | void |
1089 | void |
983 | _exit(code) |
1090 | _exit (code) |
984 | int code |
1091 | int code |
985 | PROTOTYPE: $ |
1092 | PROTOTYPE: $ |
986 | CODE: |
1093 | CODE: |
987 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
988 | _exit (code); |
1094 | _exit (code); |
989 | #else |
|
|
990 | signal (SIGTERM, SIG_DFL); |
|
|
991 | raise (SIGTERM); |
|
|
992 | exit (code); |
|
|
993 | #endif |
|
|
994 | |
1095 | |
995 | MODULE = Coro::State PACKAGE = Coro::Cont |
1096 | MODULE = Coro::State PACKAGE = Coro::Cont |
996 | |
1097 | |
997 | # this is slightly dirty (should expose a c-level api) |
|
|
998 | |
|
|
999 | void |
1098 | void |
1000 | yield(...) |
1099 | yield (...) |
1001 | PROTOTYPE: @ |
1100 | PROTOTYPE: @ |
1002 | CODE: |
1101 | CODE: |
1003 | static SV *returnstk; |
1102 | { |
|
|
1103 | SV *yieldstack; |
1004 | SV *sv; |
1104 | SV *sv; |
1005 | AV *defav = GvAV (PL_defgv); |
1105 | AV *defav = GvAV (PL_defgv); |
1006 | struct coro *prev, *next; |
1106 | struct coro *prev, *next; |
1007 | |
1107 | |
1008 | if (!returnstk) |
1108 | yieldstack = *hv_fetch ( |
1009 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
1109 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1110 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1111 | 0 |
|
|
1112 | ); |
1010 | |
1113 | |
1011 | /* set up @_ -- ugly */ |
1114 | /* set up @_ -- ugly */ |
1012 | av_clear (defav); |
1115 | av_clear (defav); |
1013 | av_fill (defav, items - 1); |
1116 | av_fill (defav, items - 1); |
1014 | while (items--) |
1117 | while (items--) |
1015 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1118 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1016 | |
1119 | |
1017 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1018 | sv = av_pop ((AV *)SvRV (returnstk)); |
1120 | sv = av_pop ((AV *)SvRV (yieldstack)); |
1019 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1121 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
1020 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1122 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
1021 | SvREFCNT_dec (sv); |
1123 | SvREFCNT_dec (sv); |
1022 | |
1124 | |
1023 | transfer(aTHX_ prev, next, 0); |
1125 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1126 | } |
1024 | |
1127 | |
1025 | MODULE = Coro::State PACKAGE = Coro |
1128 | MODULE = Coro::State PACKAGE = Coro |
1026 | |
1129 | |
1027 | # this is slightly dirty (should expose a c-level api) |
|
|
1028 | |
|
|
1029 | BOOT: |
1130 | BOOT: |
1030 | { |
1131 | { |
1031 | int i; |
1132 | int i; |
|
|
1133 | |
1032 | HV *stash = gv_stashpv ("Coro", TRUE); |
1134 | coro_stash = gv_stashpv ("Coro", TRUE); |
1033 | |
1135 | |
1034 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1136 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1035 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1137 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1036 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1138 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1037 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1139 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1038 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1140 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1039 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1141 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1040 | |
1142 | |
1041 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1143 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1042 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1144 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1043 | |
1145 | |
1044 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1146 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1052 | coroapi.ready = api_ready; |
1154 | coroapi.ready = api_ready; |
1053 | coroapi.nready = &coro_nready; |
1155 | coroapi.nready = &coro_nready; |
1054 | coroapi.current = coro_current; |
1156 | coroapi.current = coro_current; |
1055 | |
1157 | |
1056 | GCoroAPI = &coroapi; |
1158 | GCoroAPI = &coroapi; |
1057 | sv_setiv(sv, (IV)&coroapi); |
1159 | sv_setiv (sv, (IV)&coroapi); |
1058 | SvREADONLY_on(sv); |
1160 | SvREADONLY_on (sv); |
1059 | } |
1161 | } |
1060 | } |
1162 | } |
1061 | |
1163 | |
|
|
1164 | int |
|
|
1165 | prio (Coro::State coro, int newprio = 0) |
|
|
1166 | ALIAS: |
|
|
1167 | nice = 1 |
|
|
1168 | CODE: |
|
|
1169 | { |
|
|
1170 | RETVAL = coro->prio; |
|
|
1171 | |
|
|
1172 | if (items > 1) |
|
|
1173 | { |
|
|
1174 | if (ix) |
|
|
1175 | newprio += coro->prio; |
|
|
1176 | |
|
|
1177 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1178 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1179 | |
|
|
1180 | coro->prio = newprio; |
|
|
1181 | } |
|
|
1182 | } |
|
|
1183 | |
1062 | void |
1184 | void |
1063 | ready(self) |
1185 | ready (SV *self) |
1064 | SV * self |
|
|
1065 | PROTOTYPE: $ |
1186 | PROTOTYPE: $ |
1066 | CODE: |
1187 | CODE: |
1067 | api_ready (self); |
1188 | api_ready (self); |
1068 | |
1189 | |
1069 | int |
1190 | int |
1070 | nready(...) |
1191 | nready (...) |
1071 | PROTOTYPE: |
1192 | PROTOTYPE: |
1072 | CODE: |
1193 | CODE: |
1073 | RETVAL = coro_nready; |
1194 | RETVAL = coro_nready; |
1074 | OUTPUT: |
1195 | OUTPUT: |
1075 | RETVAL |
1196 | RETVAL |
1076 | |
1197 | |
|
|
1198 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1199 | |
|
|
1200 | SV * |
|
|
1201 | _get_state () |
|
|
1202 | CODE: |
|
|
1203 | { |
|
|
1204 | struct { |
|
|
1205 | int errorno; |
|
|
1206 | int laststype; |
|
|
1207 | int laststatval; |
|
|
1208 | Stat_t statcache; |
|
|
1209 | } data; |
|
|
1210 | |
|
|
1211 | data.errorno = errno; |
|
|
1212 | data.laststype = PL_laststype; |
|
|
1213 | data.laststatval = PL_laststatval; |
|
|
1214 | data.statcache = PL_statcache; |
|
|
1215 | |
|
|
1216 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1217 | } |
|
|
1218 | OUTPUT: |
|
|
1219 | RETVAL |
|
|
1220 | |
1077 | void |
1221 | void |
1078 | schedule(...) |
1222 | _set_state (char *data_) |
1079 | PROTOTYPE: |
1223 | PROTOTYPE: $ |
1080 | CODE: |
1224 | CODE: |
1081 | api_schedule (); |
1225 | { |
|
|
1226 | struct { |
|
|
1227 | int errorno; |
|
|
1228 | int laststype; |
|
|
1229 | int laststatval; |
|
|
1230 | Stat_t statcache; |
|
|
1231 | } *data = (void *)data_; |
1082 | |
1232 | |
1083 | void |
1233 | errno = data->errorno; |
1084 | cede(...) |
1234 | PL_laststype = data->laststype; |
1085 | PROTOTYPE: |
1235 | PL_laststatval = data->laststatval; |
1086 | CODE: |
1236 | PL_statcache = data->statcache; |
1087 | api_cede (); |
1237 | } |
1088 | |
|
|