1 | #define PERL_NO_GET_CONTEXT |
1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
2 | |
4 | |
3 | #include "EXTERN.h" |
5 | #include "EXTERN.h" |
4 | #include "perl.h" |
6 | #include "perl.h" |
5 | #include "XSUB.h" |
7 | #include "XSUB.h" |
6 | |
8 | |
7 | #include "patchlevel.h" |
9 | #include "patchlevel.h" |
8 | |
10 | |
9 | #if PATCHLEVEL < 6 |
11 | #if PERL_VERSION < 6 |
10 | # ifndef PL_ppaddr |
12 | # ifndef PL_ppaddr |
11 | # define PL_ppaddr ppaddr |
13 | # define PL_ppaddr ppaddr |
12 | # endif |
14 | # endif |
13 | # ifndef call_sv |
15 | # ifndef call_sv |
14 | # define call_sv perl_call_sv |
16 | # define call_sv perl_call_sv |
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25 | # ifndef IS_PADCONST |
27 | # ifndef IS_PADCONST |
26 | # define IS_PADCONST(v) 0 |
28 | # define IS_PADCONST(v) 0 |
27 | # endif |
29 | # endif |
28 | #endif |
30 | #endif |
29 | |
31 | |
30 | #include "libcoro/coro.c" |
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31 | |
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32 | #include <signal.h> |
32 | #include <errno.h> |
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33 | |
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34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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35 | # undef STACKGUARD |
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36 | #endif |
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37 | |
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38 | #ifndef STACKGUARD |
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39 | # define STACKGUARD 0 |
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40 | #endif |
33 | |
41 | |
34 | #ifdef HAVE_MMAP |
42 | #ifdef HAVE_MMAP |
35 | # include <unistd.h> |
43 | # include <unistd.h> |
36 | # include <sys/mman.h> |
44 | # include <sys/mman.h> |
37 | # ifndef MAP_ANONYMOUS |
45 | # ifndef MAP_ANONYMOUS |
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39 | # define MAP_ANONYMOUS MAP_ANON |
47 | # define MAP_ANONYMOUS MAP_ANON |
40 | # else |
48 | # else |
41 | # undef HAVE_MMAP |
49 | # undef HAVE_MMAP |
42 | # endif |
50 | # endif |
43 | # endif |
51 | # endif |
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52 | # include <limits.h> |
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53 | # ifndef PAGESIZE |
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54 | # define PAGESIZE pagesize |
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55 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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56 | static long pagesize; |
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57 | # else |
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58 | # define BOOT_PAGESIZE |
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59 | # endif |
44 | #endif |
60 | #endif |
45 | |
61 | |
46 | #define SUB_INIT "Coro::State::initialize" |
62 | #define SUB_INIT "Coro::State::initialize" |
47 | #define UCORO_STATE "_coro_state" |
63 | #define UCORO_STATE "_coro_state" |
48 | |
64 | |
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57 | |
73 | |
58 | #include "CoroAPI.h" |
74 | #include "CoroAPI.h" |
59 | |
75 | |
60 | #ifdef USE_ITHREADS |
76 | #ifdef USE_ITHREADS |
61 | static perl_mutex coro_mutex; |
77 | static perl_mutex coro_mutex; |
62 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
78 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
63 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
79 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
64 | #else |
80 | #else |
65 | # define LOCK 0 |
81 | # define LOCK (void)0 |
66 | # define UNLOCK 0 |
82 | # define UNLOCK (void)0 |
67 | #endif |
83 | #endif |
68 | |
84 | |
69 | static struct CoroAPI coroapi; |
85 | static struct CoroAPI coroapi; |
70 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
71 | static HV *coro_state_stash; |
87 | static HV *coro_state_stash; |
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84 | void *sptr; |
100 | void *sptr; |
85 | long ssize; /* positive == mmap, otherwise malloc */ |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
86 | } coro_stack; |
102 | } coro_stack; |
87 | |
103 | |
88 | struct coro { |
104 | struct coro { |
89 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
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90 | JMPENV start_env; |
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91 | |
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92 | /* the optional C context */ |
105 | /* the optional C context */ |
93 | coro_stack *stack; |
106 | coro_stack *stack; |
94 | void *cursp; |
107 | void *cursp; |
95 | int gencnt; |
108 | int gencnt; |
96 | |
109 | |
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109 | AV *mainstack; |
122 | AV *mainstack; |
110 | SV **stack_sp; |
123 | SV **stack_sp; |
111 | OP *op; |
124 | OP *op; |
112 | SV **curpad; |
125 | SV **curpad; |
113 | AV *comppad; |
126 | AV *comppad; |
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127 | CV *compcv; |
114 | SV **stack_base; |
128 | SV **stack_base; |
115 | SV **stack_max; |
129 | SV **stack_max; |
116 | SV **tmps_stack; |
130 | SV **tmps_stack; |
117 | I32 tmps_floor; |
131 | I32 tmps_floor; |
118 | I32 tmps_ix; |
132 | I32 tmps_ix; |
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127 | I32 savestack_ix; |
141 | I32 savestack_ix; |
128 | I32 savestack_max; |
142 | I32 savestack_max; |
129 | OP **retstack; |
143 | OP **retstack; |
130 | I32 retstack_ix; |
144 | I32 retstack_ix; |
131 | I32 retstack_max; |
145 | I32 retstack_max; |
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146 | PMOP *curpm; |
132 | COP *curcop; |
147 | COP *curcop; |
133 | JMPENV *top_env; |
148 | JMPENV *top_env; |
134 | |
149 | |
135 | /* data associated with this coroutine (initial args) */ |
150 | /* data associated with this coroutine (initial args) */ |
136 | AV *args; |
151 | AV *args; |
137 | }; |
152 | }; |
138 | |
153 | |
139 | typedef struct coro *Coro__State; |
154 | typedef struct coro *Coro__State; |
140 | typedef struct coro *Coro__State_or_hashref; |
155 | typedef struct coro *Coro__State_or_hashref; |
141 | |
156 | |
142 | /* mostly copied from op.c:cv_clone2 */ |
157 | static AV * |
143 | STATIC AV * |
158 | coro_clone_padlist (pTHX_ CV *cv) |
144 | clone_padlist (pTHX_ AV *protopadlist) |
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145 | { |
159 | { |
146 | AV *av; |
160 | AV *padlist = CvPADLIST (cv); |
147 | I32 ix; |
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148 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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149 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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150 | SV **pname = AvARRAY (protopad_name); |
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151 | SV **ppad = AvARRAY (protopad); |
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152 | I32 fname = AvFILLp (protopad_name); |
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153 | I32 fpad = AvFILLp (protopad); |
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154 | AV *newpadlist, *newpad_name, *newpad; |
161 | AV *newpadlist, *newpad; |
155 | SV **npad; |
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156 | |
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157 | newpad_name = newAV (); |
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158 | for (ix = fname; ix >= 0; ix--) |
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159 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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160 | |
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161 | newpad = newAV (); |
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162 | av_fill (newpad, AvFILLp (protopad)); |
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163 | npad = AvARRAY (newpad); |
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164 | |
162 | |
165 | newpadlist = newAV (); |
163 | newpadlist = newAV (); |
166 | AvREAL_off (newpadlist); |
164 | AvREAL_off (newpadlist); |
167 | av_store (newpadlist, 0, (SV *) newpad_name); |
165 | #if PERL_VERSION < 9 |
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166 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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167 | #else |
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168 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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169 | #endif |
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170 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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171 | --AvFILLp (padlist); |
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172 | |
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173 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
168 | av_store (newpadlist, 1, (SV *) newpad); |
174 | av_store (newpadlist, 1, (SV *)newpad); |
169 | |
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170 | av = newAV (); /* will be @_ */ |
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171 | av_extend (av, 0); |
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172 | av_store (newpad, 0, (SV *) av); |
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173 | AvFLAGS (av) = AVf_REIFY; |
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174 | |
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175 | for (ix = fpad; ix > 0; ix--) |
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176 | { |
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177 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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178 | |
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179 | if (namesv && namesv != &PL_sv_undef) |
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180 | { |
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181 | char *name = SvPVX (namesv); /* XXX */ |
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182 | |
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183 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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184 | { /* lexical from outside? */ |
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185 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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186 | } |
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187 | else |
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188 | { /* our own lexical */ |
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189 | SV *sv; |
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190 | if (*name == '&') |
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191 | sv = SvREFCNT_inc (ppad[ix]); |
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192 | else if (*name == '@') |
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193 | sv = (SV *) newAV (); |
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194 | else if (*name == '%') |
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195 | sv = (SV *) newHV (); |
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196 | else |
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197 | sv = NEWSV (0, 0); |
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198 | |
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199 | #ifdef SvPADBUSY |
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200 | if (!SvPADBUSY (sv)) |
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201 | #endif |
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202 | SvPADMY_on (sv); |
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203 | |
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204 | npad[ix] = sv; |
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205 | } |
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206 | } |
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207 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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208 | { |
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209 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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210 | } |
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211 | else |
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212 | { |
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213 | SV *sv = NEWSV (0, 0); |
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214 | SvPADTMP_on (sv); |
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215 | npad[ix] = sv; |
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216 | } |
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217 | } |
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218 | |
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219 | #if 0 /* return -ENOTUNDERSTOOD */ |
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220 | /* Now that vars are all in place, clone nested closures. */ |
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221 | |
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222 | for (ix = fpad; ix > 0; ix--) { |
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223 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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224 | if (namesv |
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225 | && namesv != &PL_sv_undef |
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226 | && !(SvFLAGS(namesv) & SVf_FAKE) |
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227 | && *SvPVX(namesv) == '&' |
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228 | && CvCLONE(ppad[ix])) |
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229 | { |
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230 | CV *kid = cv_clone((CV*)ppad[ix]); |
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231 | SvREFCNT_dec(ppad[ix]); |
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232 | CvCLONE_on(kid); |
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233 | SvPADMY_on(kid); |
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234 | npad[ix] = (SV*)kid; |
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235 | } |
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236 | } |
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237 | #endif |
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238 | |
175 | |
239 | return newpadlist; |
176 | return newpadlist; |
240 | } |
177 | } |
241 | |
178 | |
242 | STATIC void |
179 | static void |
243 | free_padlist (pTHX_ AV *padlist) |
180 | free_padlist (pTHX_ AV *padlist) |
244 | { |
181 | { |
245 | /* may be during global destruction */ |
182 | /* may be during global destruction */ |
246 | if (SvREFCNT (padlist)) |
183 | if (SvREFCNT (padlist)) |
247 | { |
184 | { |
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261 | |
198 | |
262 | SvREFCNT_dec ((SV*)padlist); |
199 | SvREFCNT_dec ((SV*)padlist); |
263 | } |
200 | } |
264 | } |
201 | } |
265 | |
202 | |
266 | STATIC int |
203 | static int |
267 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
204 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
268 | { |
205 | { |
269 | AV *padlist; |
206 | AV *padlist; |
270 | AV *av = (AV *)mg->mg_obj; |
207 | AV *av = (AV *)mg->mg_obj; |
271 | |
208 | |
272 | /* casting is fun. */ |
209 | /* casting is fun. */ |
273 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
210 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
274 | free_padlist (aTHX_ padlist); |
211 | free_padlist (aTHX_ padlist); |
275 | |
212 | |
276 | SvREFCNT_dec (av); |
213 | SvREFCNT_dec (av); |
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214 | |
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215 | return 0; |
277 | } |
216 | } |
278 | |
217 | |
279 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
218 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
280 | |
219 | |
281 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
220 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
282 | |
221 | |
283 | /* the next two functions merely cache the padlists */ |
222 | /* the next two functions merely cache the padlists */ |
284 | STATIC void |
223 | static void |
285 | get_padlist (pTHX_ CV *cv) |
224 | get_padlist (pTHX_ CV *cv) |
286 | { |
225 | { |
287 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
226 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
288 | |
227 | |
289 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
228 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
290 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
229 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
291 | else |
230 | else |
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231 | { |
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232 | #if 0 |
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233 | /* this should work - but it doesn't :( */ |
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234 | CV *cp = Perl_cv_clone (aTHX_ cv); |
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235 | CvPADLIST (cv) = CvPADLIST (cp); |
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236 | CvPADLIST (cp) = 0; |
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237 | SvREFCNT_dec (cp); |
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238 | #else |
292 | CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); |
239 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
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240 | #endif |
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241 | } |
293 | } |
242 | } |
294 | |
243 | |
295 | STATIC void |
244 | static void |
296 | put_padlist (pTHX_ CV *cv) |
245 | put_padlist (pTHX_ CV *cv) |
297 | { |
246 | { |
298 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
247 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
299 | |
248 | |
300 | if (!mg) |
249 | if (!mg) |
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327 | PL_mainstack = c->mainstack; |
276 | PL_mainstack = c->mainstack; |
328 | PL_stack_sp = c->stack_sp; |
277 | PL_stack_sp = c->stack_sp; |
329 | PL_op = c->op; |
278 | PL_op = c->op; |
330 | PL_curpad = c->curpad; |
279 | PL_curpad = c->curpad; |
331 | PL_comppad = c->comppad; |
280 | PL_comppad = c->comppad; |
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281 | PL_compcv = c->compcv; |
332 | PL_stack_base = c->stack_base; |
282 | PL_stack_base = c->stack_base; |
333 | PL_stack_max = c->stack_max; |
283 | PL_stack_max = c->stack_max; |
334 | PL_tmps_stack = c->tmps_stack; |
284 | PL_tmps_stack = c->tmps_stack; |
335 | PL_tmps_floor = c->tmps_floor; |
285 | PL_tmps_floor = c->tmps_floor; |
336 | PL_tmps_ix = c->tmps_ix; |
286 | PL_tmps_ix = c->tmps_ix; |
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342 | PL_scopestack_ix = c->scopestack_ix; |
292 | PL_scopestack_ix = c->scopestack_ix; |
343 | PL_scopestack_max = c->scopestack_max; |
293 | PL_scopestack_max = c->scopestack_max; |
344 | PL_savestack = c->savestack; |
294 | PL_savestack = c->savestack; |
345 | PL_savestack_ix = c->savestack_ix; |
295 | PL_savestack_ix = c->savestack_ix; |
346 | PL_savestack_max = c->savestack_max; |
296 | PL_savestack_max = c->savestack_max; |
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297 | #if PERL_VERSION < 9 |
347 | PL_retstack = c->retstack; |
298 | PL_retstack = c->retstack; |
348 | PL_retstack_ix = c->retstack_ix; |
299 | PL_retstack_ix = c->retstack_ix; |
349 | PL_retstack_max = c->retstack_max; |
300 | PL_retstack_max = c->retstack_max; |
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301 | #endif |
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302 | PL_curpm = c->curpm; |
350 | PL_curcop = c->curcop; |
303 | PL_curcop = c->curcop; |
351 | PL_top_env = c->top_env; |
304 | PL_top_env = c->top_env; |
352 | |
305 | |
353 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
306 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
354 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
307 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
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413 | } |
366 | } |
414 | |
367 | |
415 | PUSHs ((SV *)CvPADLIST(cv)); |
368 | PUSHs ((SV *)CvPADLIST(cv)); |
416 | PUSHs ((SV *)cv); |
369 | PUSHs ((SV *)cv); |
417 | |
370 | |
418 | get_padlist (aTHX_ cv); /* this is a monster */ |
371 | get_padlist (aTHX_ cv); |
419 | } |
372 | } |
420 | } |
373 | } |
421 | #ifdef CXt_FORMAT |
374 | #ifdef CXt_FORMAT |
422 | else if (CxTYPE(cx) == CXt_FORMAT) |
375 | else if (CxTYPE(cx) == CXt_FORMAT) |
423 | { |
376 | { |
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451 | c->mainstack = PL_mainstack; |
404 | c->mainstack = PL_mainstack; |
452 | c->stack_sp = PL_stack_sp; |
405 | c->stack_sp = PL_stack_sp; |
453 | c->op = PL_op; |
406 | c->op = PL_op; |
454 | c->curpad = PL_curpad; |
407 | c->curpad = PL_curpad; |
455 | c->comppad = PL_comppad; |
408 | c->comppad = PL_comppad; |
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409 | c->compcv = PL_compcv; |
456 | c->stack_base = PL_stack_base; |
410 | c->stack_base = PL_stack_base; |
457 | c->stack_max = PL_stack_max; |
411 | c->stack_max = PL_stack_max; |
458 | c->tmps_stack = PL_tmps_stack; |
412 | c->tmps_stack = PL_tmps_stack; |
459 | c->tmps_floor = PL_tmps_floor; |
413 | c->tmps_floor = PL_tmps_floor; |
460 | c->tmps_ix = PL_tmps_ix; |
414 | c->tmps_ix = PL_tmps_ix; |
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466 | c->scopestack_ix = PL_scopestack_ix; |
420 | c->scopestack_ix = PL_scopestack_ix; |
467 | c->scopestack_max = PL_scopestack_max; |
421 | c->scopestack_max = PL_scopestack_max; |
468 | c->savestack = PL_savestack; |
422 | c->savestack = PL_savestack; |
469 | c->savestack_ix = PL_savestack_ix; |
423 | c->savestack_ix = PL_savestack_ix; |
470 | c->savestack_max = PL_savestack_max; |
424 | c->savestack_max = PL_savestack_max; |
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425 | #if PERL_VERSION < 9 |
471 | c->retstack = PL_retstack; |
426 | c->retstack = PL_retstack; |
472 | c->retstack_ix = PL_retstack_ix; |
427 | c->retstack_ix = PL_retstack_ix; |
473 | c->retstack_max = PL_retstack_max; |
428 | c->retstack_max = PL_retstack_max; |
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429 | #endif |
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430 | c->curpm = PL_curpm; |
474 | c->curcop = PL_curcop; |
431 | c->curcop = PL_curcop; |
475 | c->top_env = PL_top_env; |
432 | c->top_env = PL_top_env; |
476 | } |
433 | } |
477 | |
434 | |
478 | /* |
435 | /* |
479 | * allocate various perl stacks. This is an exact copy |
436 | * allocate various perl stacks. This is an exact copy |
480 | * of perl.c:init_stacks, except that it uses less memory |
437 | * of perl.c:init_stacks, except that it uses less memory |
481 | * on the (sometimes correct) assumption that coroutines do |
438 | * on the (sometimes correct) assumption that coroutines do |
482 | * not usually need a lot of stackspace. |
439 | * not usually need a lot of stackspace. |
483 | */ |
440 | */ |
484 | STATIC void |
441 | static void |
485 | coro_init_stacks (pTHX) |
442 | coro_init_stacks (pTHX) |
486 | { |
443 | { |
487 | LOCK; |
444 | LOCK; |
488 | |
445 | |
489 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
446 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
… | |
… | |
514 | |
471 | |
515 | New(54,PL_savestack,96,ANY); |
472 | New(54,PL_savestack,96,ANY); |
516 | PL_savestack_ix = 0; |
473 | PL_savestack_ix = 0; |
517 | PL_savestack_max = 96; |
474 | PL_savestack_max = 96; |
518 | |
475 | |
|
|
476 | #if PERL_VERSION < 9 |
519 | New(54,PL_retstack,8,OP*); |
477 | New(54,PL_retstack,8,OP*); |
520 | PL_retstack_ix = 0; |
478 | PL_retstack_ix = 0; |
521 | PL_retstack_max = 8; |
479 | PL_retstack_max = 8; |
|
|
480 | #endif |
522 | |
481 | |
523 | UNLOCK; |
482 | UNLOCK; |
524 | } |
483 | } |
525 | |
484 | |
526 | /* |
485 | /* |
527 | * destroy the stacks, the callchain etc... |
486 | * destroy the stacks, the callchain etc... |
528 | */ |
487 | */ |
529 | STATIC void |
488 | static void |
530 | destroy_stacks(pTHX) |
489 | destroy_stacks(pTHX) |
531 | { |
490 | { |
532 | if (!IN_DESTRUCT) |
491 | if (!IN_DESTRUCT) |
533 | { |
492 | { |
534 | /* is this ugly, I ask? */ |
493 | /* is this ugly, I ask? */ |
… | |
… | |
566 | |
525 | |
567 | Safefree (PL_tmps_stack); |
526 | Safefree (PL_tmps_stack); |
568 | Safefree (PL_markstack); |
527 | Safefree (PL_markstack); |
569 | Safefree (PL_scopestack); |
528 | Safefree (PL_scopestack); |
570 | Safefree (PL_savestack); |
529 | Safefree (PL_savestack); |
|
|
530 | #if PERL_VERSION < 9 |
571 | Safefree (PL_retstack); |
531 | Safefree (PL_retstack); |
|
|
532 | #endif |
572 | } |
533 | } |
573 | |
534 | |
574 | static void |
535 | static void |
575 | allocate_stack (Coro__State ctx, int alloc) |
536 | allocate_stack (Coro__State ctx, int alloc) |
576 | { |
537 | { |
… | |
… | |
583 | stack->gencnt = ctx->gencnt = 0; |
544 | stack->gencnt = ctx->gencnt = 0; |
584 | |
545 | |
585 | if (alloc) |
546 | if (alloc) |
586 | { |
547 | { |
587 | #if HAVE_MMAP |
548 | #if HAVE_MMAP |
588 | stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */ |
549 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
589 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
550 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
590 | if (stack->sptr == (void *)-1) |
551 | if (stack->sptr != (void *)-1) |
591 | #endif |
|
|
592 | { |
552 | { |
593 | /*FIXME*//*D*//* reasonable stack size! */ |
553 | # if STACKGUARD |
|
|
554 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
555 | # endif |
|
|
556 | } |
|
|
557 | else |
|
|
558 | #endif |
|
|
559 | { |
594 | stack->ssize = - (8192 * sizeof (long)); |
560 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
595 | New (0, stack->sptr, 8192, long); |
561 | New (0, stack->sptr, STACKSIZE, long); |
596 | } |
562 | } |
597 | } |
563 | } |
598 | else |
564 | else |
599 | stack->sptr = 0; |
565 | stack->sptr = 0; |
600 | |
566 | |
… | |
… | |
660 | } |
626 | } |
661 | else |
627 | else |
662 | { |
628 | { |
663 | UNOP myop; |
629 | UNOP myop; |
664 | |
630 | |
665 | PL_op = (OP *)&myop; |
|
|
666 | |
|
|
667 | Zero(&myop, 1, UNOP); |
631 | Zero(&myop, 1, UNOP); |
668 | myop.op_next = Nullop; |
632 | myop.op_next = Nullop; |
669 | myop.op_flags = OPf_WANT_VOID; |
633 | myop.op_flags = OPf_WANT_VOID; |
|
|
634 | |
|
|
635 | PL_op = (OP *)&myop; |
670 | |
636 | |
671 | PUSHMARK(SP); |
637 | PUSHMARK(SP); |
672 | XPUSHs (sub_init); |
638 | XPUSHs (sub_init); |
673 | /* |
639 | /* |
674 | * the next line is slightly wrong, as PL_op->op_next |
640 | * the next line is slightly wrong, as PL_op->op_next |
… | |
… | |
691 | /* |
657 | /* |
692 | * this is a _very_ stripped down perl interpreter ;) |
658 | * this is a _very_ stripped down perl interpreter ;) |
693 | */ |
659 | */ |
694 | dTHX; |
660 | dTHX; |
695 | Coro__State ctx = (Coro__State)arg; |
661 | Coro__State ctx = (Coro__State)arg; |
696 | JMPENV coro_start_env; |
|
|
697 | |
662 | |
698 | PL_top_env = &ctx->start_env; |
663 | PL_top_env = &PL_start_env; |
699 | |
664 | |
700 | ctx->cursp = 0; |
665 | ctx->cursp = 0; |
701 | PL_op = PL_op->op_next; |
666 | PL_op = PL_op->op_next; |
702 | CALLRUNOPS(aTHX); |
667 | CALLRUNOPS(aTHX); |
703 | |
668 | |
704 | abort (); |
669 | abort (); |
705 | } |
670 | } |
706 | |
671 | |
707 | STATIC void |
672 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
673 | static void |
708 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
674 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
709 | { |
675 | { |
710 | dSTACKLEVEL; |
676 | dSTACKLEVEL; |
711 | |
677 | |
712 | if (prev != next) |
678 | if (prev != next) |
713 | { |
679 | { |
|
|
680 | /* has this coro been created yet? */ |
714 | if (next->mainstack) |
681 | if (next->mainstack) |
715 | { |
682 | { |
716 | LOCK; |
683 | LOCK; |
717 | SAVE (prev, flags); |
684 | SAVE (prev, flags); |
718 | LOAD (next); |
685 | LOAD (next); |
… | |
… | |
757 | { |
724 | { |
758 | LOCK; |
725 | LOCK; |
759 | SAVE (prev, -1); /* first get rid of the old state */ |
726 | SAVE (prev, -1); /* first get rid of the old state */ |
760 | UNLOCK; |
727 | UNLOCK; |
761 | |
728 | |
|
|
729 | /* create the coroutine for the first time */ |
762 | if (flags & TRANSFER_SAVE_CCTXT) |
730 | if (flags & TRANSFER_SAVE_CCTXT) |
763 | { |
731 | { |
764 | if (!prev->stack) |
732 | if (!prev->stack) |
765 | allocate_stack (prev, 0); |
733 | allocate_stack (prev, 0); |
766 | |
734 | |
|
|
735 | /* the new coroutine starts with start_env again */ |
|
|
736 | PL_top_env = &PL_start_env; |
|
|
737 | |
767 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
738 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
768 | { |
739 | { |
769 | PL_top_env = &next->start_env; |
|
|
770 | |
|
|
771 | setup_coro (next); |
740 | setup_coro (next); |
772 | next->cursp = stacklevel; |
741 | next->cursp = stacklevel; |
773 | |
742 | |
774 | prev->stack->refcnt++; |
743 | prev->stack->refcnt++; |
775 | prev->stack->usecnt++; |
744 | prev->stack->usecnt++; |
… | |
… | |
803 | coro_mortal = 0; |
772 | coro_mortal = 0; |
804 | } |
773 | } |
805 | UNLOCK; |
774 | UNLOCK; |
806 | } |
775 | } |
807 | |
776 | |
|
|
777 | /* use this function pointer to call the above function */ |
|
|
778 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
779 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
780 | |
808 | #define SV_CORO(sv,func) \ |
781 | #define SV_CORO(sv,func) \ |
809 | do { \ |
782 | do { \ |
810 | if (SvROK (sv)) \ |
783 | if (SvROK (sv)) \ |
811 | sv = SvRV (sv); \ |
784 | sv = SvRV (sv); \ |
812 | \ |
785 | \ |
… | |
… | |
824 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
797 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
825 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
798 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
826 | \ |
799 | \ |
827 | } while(0) |
800 | } while(0) |
828 | |
801 | |
829 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
802 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv)) |
830 | |
803 | |
831 | static void |
804 | static void |
832 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
805 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
833 | { |
806 | { |
834 | SV_CORO (prev, "Coro::transfer"); |
807 | SV_CORO (prev, "Coro::transfer"); |
835 | SV_CORO (next, "Coro::transfer"); |
808 | SV_CORO (next, "Coro::transfer"); |
836 | |
809 | |
837 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
810 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
838 | } |
811 | } |
839 | |
812 | |
840 | /** Coro ********************************************************************/ |
813 | /** Coro ********************************************************************/ |
841 | |
814 | |
842 | #define PRIO_MAX 3 |
815 | #define PRIO_MAX 3 |
… | |
… | |
846 | #define PRIO_IDLE -3 |
819 | #define PRIO_IDLE -3 |
847 | #define PRIO_MIN -4 |
820 | #define PRIO_MIN -4 |
848 | |
821 | |
849 | /* for Coro.pm */ |
822 | /* for Coro.pm */ |
850 | static GV *coro_current, *coro_idle; |
823 | static GV *coro_current, *coro_idle; |
851 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
824 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
852 | static int coro_nready; |
825 | static int coro_nready; |
853 | |
826 | |
854 | static void |
827 | static void |
855 | coro_enq (pTHX_ SV *sv) |
828 | coro_enq (pTHX_ SV *sv) |
856 | { |
829 | { |
|
|
830 | SV **xprio; |
|
|
831 | int prio; |
|
|
832 | |
857 | if (SvTYPE (sv) == SVt_PVHV) |
833 | if (SvTYPE (sv) != SVt_PVHV) |
858 | { |
|
|
859 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
860 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
861 | |
|
|
862 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
863 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
864 | : prio; |
|
|
865 | |
|
|
866 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
867 | coro_nready++; |
|
|
868 | |
|
|
869 | return; |
|
|
870 | } |
|
|
871 | |
|
|
872 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
834 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
835 | |
|
|
836 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
837 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
838 | |
|
|
839 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
840 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
841 | : prio; |
|
|
842 | |
|
|
843 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
844 | coro_nready++; |
873 | } |
845 | } |
874 | |
846 | |
875 | static SV * |
847 | static SV * |
876 | coro_deq (pTHX_ int min_prio) |
848 | coro_deq (pTHX_ int min_prio) |
877 | { |
849 | { |
… | |
… | |
880 | min_prio -= PRIO_MIN; |
852 | min_prio -= PRIO_MIN; |
881 | if (min_prio < 0) |
853 | if (min_prio < 0) |
882 | min_prio = 0; |
854 | min_prio = 0; |
883 | |
855 | |
884 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
856 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
885 | if (av_len (coro_ready[prio]) >= 0) |
857 | if (AvFILLp (coro_ready [prio]) >= 0) |
886 | { |
858 | { |
887 | coro_nready--; |
859 | coro_nready--; |
888 | return av_shift (coro_ready[prio]); |
860 | return av_shift (coro_ready [prio]); |
889 | } |
861 | } |
890 | |
862 | |
891 | return 0; |
863 | return 0; |
892 | } |
864 | } |
893 | |
865 | |
… | |
… | |
927 | |
899 | |
928 | SV_CORO (next, "Coro::schedule"); |
900 | SV_CORO (next, "Coro::schedule"); |
929 | |
901 | |
930 | UNLOCK; |
902 | UNLOCK; |
931 | |
903 | |
932 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
904 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
933 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
905 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
934 | } |
906 | } |
935 | |
907 | |
936 | static void |
908 | static void |
937 | api_cede (void) |
909 | api_cede (void) |
938 | { |
910 | { |
… | |
… | |
952 | BOOT: |
924 | BOOT: |
953 | { /* {} necessary for stoopid perl-5.6.x */ |
925 | { /* {} necessary for stoopid perl-5.6.x */ |
954 | #ifdef USE_ITHREADS |
926 | #ifdef USE_ITHREADS |
955 | MUTEX_INIT (&coro_mutex); |
927 | MUTEX_INIT (&coro_mutex); |
956 | #endif |
928 | #endif |
|
|
929 | BOOT_PAGESIZE; |
957 | |
930 | |
958 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
931 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
959 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
932 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
960 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
933 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
961 | |
934 | |
… | |
… | |
969 | coroapi.ver = CORO_API_VERSION; |
942 | coroapi.ver = CORO_API_VERSION; |
970 | coroapi.transfer = api_transfer; |
943 | coroapi.transfer = api_transfer; |
971 | } |
944 | } |
972 | |
945 | |
973 | Coro::State |
946 | Coro::State |
974 | _newprocess(args) |
947 | new (char *klass, ...) |
975 | SV * args |
|
|
976 | PROTOTYPE: $ |
948 | PROTOTYPE: $@ |
977 | CODE: |
949 | CODE: |
|
|
950 | { |
978 | Coro__State coro; |
951 | Coro__State coro; |
|
|
952 | int i; |
979 | |
953 | |
980 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
954 | if (!SvOK (ST (1))) |
981 | croak ("Coro::State::_newprocess expects an arrayref"); |
955 | croak ("Coro::State::new needs something callable as first argument"); |
982 | |
956 | |
983 | Newz (0, coro, 1, struct coro); |
957 | Newz (0, coro, 1, struct coro); |
|
|
958 | coro->args = newAV (); |
984 | |
959 | |
985 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
960 | for (i = 1; i < items; i++) |
|
|
961 | av_push (coro->args, newSVsv (ST (i))); |
|
|
962 | |
|
|
963 | RETVAL = coro; |
|
|
964 | |
986 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
965 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
987 | /*coro->stack = 0;*/ |
966 | /*coro->stack = 0;*/ |
988 | |
967 | } |
989 | /* same as JMPENV_BOOTSTRAP */ |
|
|
990 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
991 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
|
|
992 | coro->start_env.je_ret = -1; |
|
|
993 | coro->start_env.je_mustcatch = TRUE; |
|
|
994 | |
|
|
995 | RETVAL = coro; |
|
|
996 | OUTPUT: |
968 | OUTPUT: |
997 | RETVAL |
969 | RETVAL |
998 | |
970 | |
999 | void |
971 | void |
1000 | transfer(prev, next, flags) |
972 | transfer(prev, next, flags) |
… | |
… | |
1004 | PROTOTYPE: @ |
976 | PROTOTYPE: @ |
1005 | CODE: |
977 | CODE: |
1006 | PUTBACK; |
978 | PUTBACK; |
1007 | SV_CORO (next, "Coro::transfer"); |
979 | SV_CORO (next, "Coro::transfer"); |
1008 | SV_CORO (prev, "Coro::transfer"); |
980 | SV_CORO (prev, "Coro::transfer"); |
1009 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
981 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1010 | SPAGAIN; |
982 | SPAGAIN; |
1011 | |
983 | |
1012 | void |
984 | void |
1013 | DESTROY(coro) |
985 | DESTROY(coro) |
1014 | Coro::State coro |
986 | Coro::State coro |
… | |
… | |
1042 | CODE: |
1014 | CODE: |
1043 | _exit (code); |
1015 | _exit (code); |
1044 | |
1016 | |
1045 | MODULE = Coro::State PACKAGE = Coro::Cont |
1017 | MODULE = Coro::State PACKAGE = Coro::Cont |
1046 | |
1018 | |
1047 | # this is slightly dirty (should expose a c-level api) |
|
|
1048 | |
|
|
1049 | void |
1019 | void |
1050 | yield(...) |
1020 | yield(...) |
1051 | PROTOTYPE: @ |
1021 | PROTOTYPE: @ |
1052 | CODE: |
1022 | CODE: |
1053 | static SV *returnstk; |
1023 | SV *yieldstack; |
1054 | SV *sv; |
1024 | SV *sv; |
1055 | AV *defav = GvAV (PL_defgv); |
1025 | AV *defav = GvAV (PL_defgv); |
1056 | struct coro *prev, *next; |
1026 | struct coro *prev, *next; |
1057 | |
1027 | |
1058 | if (!returnstk) |
1028 | yieldstack = *hv_fetch ( |
1059 | returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE)); |
1029 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1030 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1031 | 0 |
|
|
1032 | ); |
1060 | |
1033 | |
1061 | /* set up @_ -- ugly */ |
1034 | /* set up @_ -- ugly */ |
1062 | av_clear (defav); |
1035 | av_clear (defav); |
1063 | av_fill (defav, items - 1); |
1036 | av_fill (defav, items - 1); |
1064 | while (items--) |
1037 | while (items--) |
1065 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1038 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
1066 | |
1039 | |
1067 | SvGETMAGIC (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1068 | sv = av_pop ((AV *)SvRV (returnstk)); |
1040 | sv = av_pop ((AV *)SvRV (yieldstack)); |
1069 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1041 | prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
1070 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1042 | next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
1071 | SvREFCNT_dec (sv); |
1043 | SvREFCNT_dec (sv); |
1072 | |
1044 | |
1073 | transfer (aTHX_ prev, next, 0); |
1045 | coro_state_transfer (aTHX_ prev, next, 0); |
1074 | |
1046 | |
1075 | MODULE = Coro::State PACKAGE = Coro |
1047 | MODULE = Coro::State PACKAGE = Coro |
1076 | |
|
|
1077 | # this is slightly dirty (should expose a c-level api) |
|
|
1078 | |
1048 | |
1079 | BOOT: |
1049 | BOOT: |
1080 | { |
1050 | { |
1081 | int i; |
1051 | int i; |
1082 | HV *stash = gv_stashpv ("Coro", TRUE); |
1052 | HV *stash = gv_stashpv ("Coro", TRUE); |
… | |
… | |
1102 | coroapi.ready = api_ready; |
1072 | coroapi.ready = api_ready; |
1103 | coroapi.nready = &coro_nready; |
1073 | coroapi.nready = &coro_nready; |
1104 | coroapi.current = coro_current; |
1074 | coroapi.current = coro_current; |
1105 | |
1075 | |
1106 | GCoroAPI = &coroapi; |
1076 | GCoroAPI = &coroapi; |
1107 | sv_setiv(sv, (IV)&coroapi); |
1077 | sv_setiv (sv, (IV)&coroapi); |
1108 | SvREADONLY_on(sv); |
1078 | SvREADONLY_on (sv); |
1109 | } |
1079 | } |
1110 | } |
1080 | } |
1111 | |
1081 | |
1112 | #if !PERL_MICRO |
1082 | #if !PERL_MICRO |
1113 | |
1083 | |
… | |
… | |
1138 | cede(...) |
1108 | cede(...) |
1139 | PROTOTYPE: |
1109 | PROTOTYPE: |
1140 | CODE: |
1110 | CODE: |
1141 | api_cede (); |
1111 | api_cede (); |
1142 | |
1112 | |
|
|
1113 | # and these are hacks |
|
|
1114 | SV * |
|
|
1115 | _aio_get_state () |
|
|
1116 | CODE: |
|
|
1117 | { |
|
|
1118 | struct { |
|
|
1119 | int errorno; |
|
|
1120 | int laststype; |
|
|
1121 | int laststatval; |
|
|
1122 | Stat_t statcache; |
|
|
1123 | } data; |
|
|
1124 | |
|
|
1125 | data.errorno = errno; |
|
|
1126 | data.laststype = PL_laststype; |
|
|
1127 | data.laststatval = PL_laststatval; |
|
|
1128 | data.statcache = PL_statcache; |
|
|
1129 | |
|
|
1130 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1131 | } |
|
|
1132 | OUTPUT: |
|
|
1133 | RETVAL |
|
|
1134 | |
|
|
1135 | void |
|
|
1136 | _aio_set_state (char *data_) |
|
|
1137 | PROTOTYPE: $ |
|
|
1138 | CODE: |
|
|
1139 | { |
|
|
1140 | struct { |
|
|
1141 | int errorno; |
|
|
1142 | int laststype; |
|
|
1143 | int laststatval; |
|
|
1144 | Stat_t statcache; |
|
|
1145 | } *data = (void *)data_; |
|
|
1146 | |
|
|
1147 | errno = data->errorno; |
|
|
1148 | PL_laststype = data->laststype; |
|
|
1149 | PL_laststatval = data->laststatval; |
|
|
1150 | PL_statcache = data->statcache; |
|
|
1151 | } |