… | |
… | |
27 | # ifndef IS_PADCONST |
27 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
28 | # define IS_PADCONST(v) 0 |
29 | # endif |
29 | # endif |
30 | #endif |
30 | #endif |
31 | |
31 | |
|
|
32 | #include <stdio.h> |
32 | #include <errno.h> |
33 | #include <errno.h> |
33 | #include <signal.h> |
34 | |
|
|
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 | |
|
|
39 | #ifndef STACKGUARD |
|
|
40 | # define STACKGUARD 0 |
|
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41 | #endif |
34 | |
42 | |
35 | #ifdef HAVE_MMAP |
43 | #ifdef HAVE_MMAP |
36 | # include <unistd.h> |
44 | # include <unistd.h> |
37 | # include <sys/mman.h> |
45 | # include <sys/mman.h> |
38 | # ifndef MAP_ANONYMOUS |
46 | # ifndef MAP_ANONYMOUS |
… | |
… | |
40 | # define MAP_ANONYMOUS MAP_ANON |
48 | # define MAP_ANONYMOUS MAP_ANON |
41 | # else |
49 | # else |
42 | # undef HAVE_MMAP |
50 | # undef HAVE_MMAP |
43 | # endif |
51 | # endif |
44 | # endif |
52 | # endif |
|
|
53 | # include <limits.h> |
|
|
54 | # ifndef PAGESIZE |
|
|
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 |
|
|
59 | # define BOOT_PAGESIZE |
45 | #endif |
60 | # endif |
46 | |
61 | #endif |
47 | #define SUB_INIT "Coro::State::initialize" |
|
|
48 | #define UCORO_STATE "_coro_state" |
|
|
49 | |
62 | |
50 | /* 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 |
51 | * 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 |
52 | * and should be unique. */ |
65 | * and should be unique. */ |
|
|
66 | #define dSTACKLEVEL int stacklevel |
53 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
67 | #define STACKLEVEL ((void *)&stacklevel) |
54 | |
68 | |
55 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
56 | |
70 | |
57 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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58 | |
|
|
59 | #include "CoroAPI.h" |
71 | #include "CoroAPI.h" |
|
|
72 | |
|
|
73 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
60 | |
74 | |
61 | #ifdef USE_ITHREADS |
75 | #ifdef USE_ITHREADS |
62 | static perl_mutex coro_mutex; |
76 | static perl_mutex coro_mutex; |
63 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
77 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
64 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
78 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
… | |
… | |
67 | # define UNLOCK (void)0 |
81 | # define UNLOCK (void)0 |
68 | #endif |
82 | #endif |
69 | |
83 | |
70 | static struct CoroAPI coroapi; |
84 | static struct CoroAPI coroapi; |
71 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
85 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
72 | static HV *coro_state_stash; |
86 | static HV *coro_state_stash, *coro_stash; |
73 | static SV *ucoro_state_sv; |
|
|
74 | static U32 ucoro_state_hash; |
|
|
75 | static SV *coro_mortal; /* will be freed after next transfer */ |
87 | static SV *coro_mortal; /* will be freed after next transfer */ |
76 | |
88 | |
77 | /* this is actually not only the c stack but also c registers etc... */ |
89 | /* this is a structure representing a c-level coroutine */ |
78 | typedef struct { |
90 | typedef struct coro_stack { |
79 | int refcnt; /* pointer reference counter */ |
91 | struct coro_stack *next; |
80 | int usecnt; /* shared by how many coroutines */ |
|
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81 | int gencnt; /* generation counter */ |
|
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82 | |
92 | |
83 | coro_context cctx; |
93 | /* the stack */ |
84 | |
|
|
85 | void *sptr; |
94 | void *sptr; |
86 | long ssize; /* positive == mmap, otherwise malloc */ |
95 | long ssize; /* positive == mmap, otherwise malloc */ |
|
|
96 | |
|
|
97 | /* cpu state */ |
|
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98 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
|
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99 | JMPENV *top_env; |
|
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100 | coro_context cctx; |
87 | } coro_stack; |
101 | } coro_stack; |
88 | |
102 | |
|
|
103 | /* this is a structure representing a perl-level coroutine */ |
89 | struct coro { |
104 | struct coro { |
90 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
105 | /* the c coroutine allocated to this perl coroutine, if any */ |
91 | JMPENV start_env; |
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92 | |
|
|
93 | /* the optional C context */ |
|
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94 | coro_stack *stack; |
106 | coro_stack *stack; |
95 | void *cursp; |
107 | |
|
|
108 | /* data associated with this coroutine (initial args) */ |
|
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109 | AV *args; |
96 | int gencnt; |
110 | int refcnt; |
97 | |
111 | |
98 | /* optionally saved, might be zero */ |
112 | /* optionally saved, might be zero */ |
99 | AV *defav; |
113 | AV *defav; |
100 | SV *defsv; |
114 | SV *defsv; |
101 | SV *errsv; |
115 | SV *errsv; |
… | |
… | |
131 | OP **retstack; |
145 | OP **retstack; |
132 | I32 retstack_ix; |
146 | I32 retstack_ix; |
133 | I32 retstack_max; |
147 | I32 retstack_max; |
134 | PMOP *curpm; |
148 | PMOP *curpm; |
135 | COP *curcop; |
149 | COP *curcop; |
136 | JMPENV *top_env; |
|
|
137 | |
150 | |
138 | /* data associated with this coroutine (initial args) */ |
151 | /* coro process data */ |
139 | AV *args; |
152 | int prio; |
140 | }; |
153 | }; |
141 | |
154 | |
142 | typedef struct coro *Coro__State; |
155 | typedef struct coro *Coro__State; |
143 | typedef struct coro *Coro__State_or_hashref; |
156 | typedef struct coro *Coro__State_or_hashref; |
144 | |
157 | |
145 | /* mostly copied from op.c:cv_clone2 */ |
158 | static AV * |
146 | STATIC AV * |
159 | coro_clone_padlist (pTHX_ CV *cv) |
147 | clone_padlist (pTHX_ AV *protopadlist) |
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148 | { |
160 | { |
149 | AV *av; |
161 | AV *padlist = CvPADLIST (cv); |
150 | I32 ix; |
|
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151 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
|
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152 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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153 | SV **pname = AvARRAY (protopad_name); |
|
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154 | SV **ppad = AvARRAY (protopad); |
|
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155 | I32 fname = AvFILLp (protopad_name); |
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156 | I32 fpad = AvFILLp (protopad); |
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157 | AV *newpadlist, *newpad_name, *newpad; |
162 | AV *newpadlist, *newpad; |
158 | SV **npad; |
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159 | |
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160 | newpad_name = newAV (); |
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161 | for (ix = fname; ix >= 0; ix--) |
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162 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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163 | |
|
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164 | newpad = newAV (); |
|
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165 | av_fill (newpad, AvFILLp (protopad)); |
|
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166 | npad = AvARRAY (newpad); |
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167 | |
163 | |
168 | newpadlist = newAV (); |
164 | newpadlist = newAV (); |
169 | AvREAL_off (newpadlist); |
165 | AvREAL_off (newpadlist); |
170 | av_store (newpadlist, 0, (SV *) newpad_name); |
166 | #if PERL_VERSION < 9 |
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167 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
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168 | #else |
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169 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
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170 | #endif |
|
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171 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
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172 | --AvFILLp (padlist); |
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173 | |
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174 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
171 | av_store (newpadlist, 1, (SV *) newpad); |
175 | av_store (newpadlist, 1, (SV *)newpad); |
172 | |
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173 | av = newAV (); /* will be @_ */ |
|
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174 | av_extend (av, 0); |
|
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175 | av_store (newpad, 0, (SV *) av); |
|
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176 | AvREIFY_on (av); |
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177 | |
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178 | for (ix = fpad; ix > 0; ix--) |
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179 | { |
|
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180 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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181 | |
|
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182 | if (namesv && namesv != &PL_sv_undef) |
|
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183 | { |
|
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184 | char *name = SvPVX (namesv); /* XXX */ |
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185 | |
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186 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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187 | { /* lexical from outside? */ |
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188 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
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189 | } |
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190 | else |
|
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191 | { /* our own lexical */ |
|
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192 | SV *sv; |
|
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193 | if (*name == '&') |
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194 | sv = SvREFCNT_inc (ppad[ix]); |
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195 | else if (*name == '@') |
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196 | sv = (SV *) newAV (); |
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197 | else if (*name == '%') |
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198 | sv = (SV *) newHV (); |
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199 | else |
|
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200 | sv = NEWSV (0, 0); |
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201 | |
|
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202 | #ifdef SvPADBUSY |
|
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203 | if (!SvPADBUSY (sv)) |
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204 | #endif |
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205 | SvPADMY_on (sv); |
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206 | |
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207 | npad[ix] = sv; |
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208 | } |
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209 | } |
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210 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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211 | { |
|
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212 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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213 | } |
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214 | else |
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215 | { |
|
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216 | SV *sv = NEWSV (0, 0); |
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217 | SvPADTMP_on (sv); |
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218 | npad[ix] = sv; |
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219 | } |
|
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220 | } |
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221 | |
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222 | #if 0 /* return -ENOTUNDERSTOOD */ |
|
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223 | /* Now that vars are all in place, clone nested closures. */ |
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224 | |
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225 | for (ix = fpad; ix > 0; ix--) { |
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226 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
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227 | if (namesv |
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228 | && namesv != &PL_sv_undef |
|
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229 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
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230 | && *SvPVX(namesv) == '&' |
|
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231 | && CvCLONE(ppad[ix])) |
|
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232 | { |
|
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233 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
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234 | SvREFCNT_dec(ppad[ix]); |
|
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235 | CvCLONE_on(kid); |
|
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236 | SvPADMY_on(kid); |
|
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237 | npad[ix] = (SV*)kid; |
|
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238 | } |
|
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239 | } |
|
|
240 | #endif |
|
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241 | |
176 | |
242 | return newpadlist; |
177 | return newpadlist; |
243 | } |
178 | } |
244 | |
179 | |
245 | STATIC void |
180 | static void |
246 | free_padlist (pTHX_ AV *padlist) |
181 | free_padlist (pTHX_ AV *padlist) |
247 | { |
182 | { |
248 | /* may be during global destruction */ |
183 | /* may be during global destruction */ |
249 | if (SvREFCNT (padlist)) |
184 | if (SvREFCNT (padlist)) |
250 | { |
185 | { |
… | |
… | |
264 | |
199 | |
265 | SvREFCNT_dec ((SV*)padlist); |
200 | SvREFCNT_dec ((SV*)padlist); |
266 | } |
201 | } |
267 | } |
202 | } |
268 | |
203 | |
269 | STATIC int |
204 | static int |
270 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
205 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
271 | { |
206 | { |
272 | AV *padlist; |
207 | AV *padlist; |
273 | AV *av = (AV *)mg->mg_obj; |
208 | AV *av = (AV *)mg->mg_obj; |
274 | |
209 | |
275 | /* casting is fun. */ |
210 | /* casting is fun. */ |
276 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
211 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
277 | free_padlist (aTHX_ padlist); |
212 | free_padlist (aTHX_ padlist); |
278 | |
213 | |
279 | SvREFCNT_dec (av); |
214 | SvREFCNT_dec (av); |
|
|
215 | |
|
|
216 | return 0; |
280 | } |
217 | } |
281 | |
218 | |
282 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
219 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
283 | |
220 | |
284 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
221 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
285 | |
222 | |
286 | /* the next two functions merely cache the padlists */ |
223 | /* the next two functions merely cache the padlists */ |
287 | STATIC void |
224 | static void |
288 | get_padlist (pTHX_ CV *cv) |
225 | get_padlist (pTHX_ CV *cv) |
289 | { |
226 | { |
290 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
227 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
291 | |
228 | |
292 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
229 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
293 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
230 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
294 | else |
231 | else |
|
|
232 | { |
|
|
233 | #if 0 |
|
|
234 | /* this is probably cleaner, but also slower? */ |
|
|
235 | CV *cp = Perl_cv_clone (aTHX_ cv); |
|
|
236 | CvPADLIST (cv) = CvPADLIST (cp); |
|
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237 | CvPADLIST (cp) = 0; |
|
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238 | SvREFCNT_dec (cp); |
|
|
239 | #else |
295 | CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); |
240 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
|
|
241 | #endif |
|
|
242 | } |
296 | } |
243 | } |
297 | |
244 | |
298 | STATIC void |
245 | static void |
299 | put_padlist (pTHX_ CV *cv) |
246 | put_padlist (pTHX_ CV *cv) |
300 | { |
247 | { |
301 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
248 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
302 | |
249 | |
303 | if (!mg) |
250 | if (!mg) |
… | |
… | |
346 | PL_scopestack_ix = c->scopestack_ix; |
293 | PL_scopestack_ix = c->scopestack_ix; |
347 | PL_scopestack_max = c->scopestack_max; |
294 | PL_scopestack_max = c->scopestack_max; |
348 | PL_savestack = c->savestack; |
295 | PL_savestack = c->savestack; |
349 | PL_savestack_ix = c->savestack_ix; |
296 | PL_savestack_ix = c->savestack_ix; |
350 | PL_savestack_max = c->savestack_max; |
297 | PL_savestack_max = c->savestack_max; |
351 | #ifdef PL_retstack |
298 | #if PERL_VERSION < 9 |
352 | PL_retstack = c->retstack; |
299 | PL_retstack = c->retstack; |
353 | PL_retstack_ix = c->retstack_ix; |
300 | PL_retstack_ix = c->retstack_ix; |
354 | PL_retstack_max = c->retstack_max; |
301 | PL_retstack_max = c->retstack_max; |
355 | #endif |
302 | #endif |
356 | PL_curpm = c->curpm; |
303 | PL_curpm = c->curpm; |
357 | PL_curcop = c->curcop; |
304 | PL_curcop = c->curcop; |
358 | PL_top_env = c->top_env; |
|
|
359 | |
305 | |
360 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
306 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
361 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
307 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
362 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
308 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
363 | |
309 | |
… | |
… | |
420 | } |
366 | } |
421 | |
367 | |
422 | PUSHs ((SV *)CvPADLIST(cv)); |
368 | PUSHs ((SV *)CvPADLIST(cv)); |
423 | PUSHs ((SV *)cv); |
369 | PUSHs ((SV *)cv); |
424 | |
370 | |
425 | get_padlist (aTHX_ cv); /* this is a monster */ |
371 | get_padlist (aTHX_ cv); |
426 | } |
372 | } |
427 | } |
373 | } |
428 | #ifdef CXt_FORMAT |
374 | #ifdef CXt_FORMAT |
429 | else if (CxTYPE(cx) == CXt_FORMAT) |
375 | else if (CxTYPE(cx) == CXt_FORMAT) |
430 | { |
376 | { |
… | |
… | |
474 | c->scopestack_ix = PL_scopestack_ix; |
420 | c->scopestack_ix = PL_scopestack_ix; |
475 | c->scopestack_max = PL_scopestack_max; |
421 | c->scopestack_max = PL_scopestack_max; |
476 | c->savestack = PL_savestack; |
422 | c->savestack = PL_savestack; |
477 | c->savestack_ix = PL_savestack_ix; |
423 | c->savestack_ix = PL_savestack_ix; |
478 | c->savestack_max = PL_savestack_max; |
424 | c->savestack_max = PL_savestack_max; |
479 | #ifdef PL_retstack |
425 | #if PERL_VERSION < 9 |
480 | c->retstack = PL_retstack; |
426 | c->retstack = PL_retstack; |
481 | c->retstack_ix = PL_retstack_ix; |
427 | c->retstack_ix = PL_retstack_ix; |
482 | c->retstack_max = PL_retstack_max; |
428 | c->retstack_max = PL_retstack_max; |
483 | #endif |
429 | #endif |
484 | c->curpm = PL_curpm; |
430 | c->curpm = PL_curpm; |
485 | c->curcop = PL_curcop; |
431 | c->curcop = PL_curcop; |
486 | c->top_env = PL_top_env; |
|
|
487 | } |
432 | } |
488 | |
433 | |
489 | /* |
434 | /* |
490 | * allocate various perl stacks. This is an exact copy |
435 | * allocate various perl stacks. This is an exact copy |
491 | * of perl.c:init_stacks, except that it uses less memory |
436 | * of perl.c:init_stacks, except that it uses less memory |
492 | * on the (sometimes correct) assumption that coroutines do |
437 | * on the (sometimes correct) assumption that coroutines do |
493 | * not usually need a lot of stackspace. |
438 | * not usually need a lot of stackspace. |
494 | */ |
439 | */ |
495 | STATIC void |
440 | static void |
496 | coro_init_stacks (pTHX) |
441 | coro_init_stacks (pTHX) |
497 | { |
442 | { |
498 | LOCK; |
443 | LOCK; |
499 | |
444 | |
500 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
445 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
… | |
… | |
525 | |
470 | |
526 | New(54,PL_savestack,96,ANY); |
471 | New(54,PL_savestack,96,ANY); |
527 | PL_savestack_ix = 0; |
472 | PL_savestack_ix = 0; |
528 | PL_savestack_max = 96; |
473 | PL_savestack_max = 96; |
529 | |
474 | |
530 | #ifdef PL_retstack |
475 | #if PERL_VERSION < 9 |
531 | New(54,PL_retstack,8,OP*); |
476 | New(54,PL_retstack,8,OP*); |
532 | PL_retstack_ix = 0; |
477 | PL_retstack_ix = 0; |
533 | PL_retstack_max = 8; |
478 | PL_retstack_max = 8; |
534 | #endif |
479 | #endif |
535 | |
480 | |
… | |
… | |
537 | } |
482 | } |
538 | |
483 | |
539 | /* |
484 | /* |
540 | * destroy the stacks, the callchain etc... |
485 | * destroy the stacks, the callchain etc... |
541 | */ |
486 | */ |
542 | STATIC void |
487 | static void |
543 | destroy_stacks(pTHX) |
488 | destroy_stacks(pTHX) |
544 | { |
489 | { |
545 | if (!IN_DESTRUCT) |
490 | if (!IN_DESTRUCT) |
546 | { |
491 | { |
547 | /* is this ugly, I ask? */ |
492 | /* is this ugly, I ask? */ |
… | |
… | |
579 | |
524 | |
580 | Safefree (PL_tmps_stack); |
525 | Safefree (PL_tmps_stack); |
581 | Safefree (PL_markstack); |
526 | Safefree (PL_markstack); |
582 | Safefree (PL_scopestack); |
527 | Safefree (PL_scopestack); |
583 | Safefree (PL_savestack); |
528 | Safefree (PL_savestack); |
584 | #ifdef PL_retstack |
529 | #if PERL_VERSION < 9 |
585 | Safefree (PL_retstack); |
530 | Safefree (PL_retstack); |
586 | #endif |
531 | #endif |
587 | } |
532 | } |
588 | |
533 | |
589 | static void |
534 | static void |
590 | allocate_stack (Coro__State ctx, int alloc) |
535 | setup_coro (struct coro *coro) |
591 | { |
|
|
592 | coro_stack *stack; |
|
|
593 | |
|
|
594 | New (0, stack, 1, coro_stack); |
|
|
595 | |
|
|
596 | stack->refcnt = 1; |
|
|
597 | stack->usecnt = 1; |
|
|
598 | stack->gencnt = ctx->gencnt = 0; |
|
|
599 | |
|
|
600 | if (alloc) |
|
|
601 | { |
|
|
602 | #if HAVE_MMAP |
|
|
603 | stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
604 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
605 | if (stack->sptr == (void *)-1) |
|
|
606 | #endif |
|
|
607 | { |
|
|
608 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
609 | stack->ssize = - (STACKSIZE * sizeof (long)); |
|
|
610 | New (0, stack->sptr, STACKSIZE, long); |
|
|
611 | } |
|
|
612 | } |
|
|
613 | else |
|
|
614 | stack->sptr = 0; |
|
|
615 | |
|
|
616 | ctx->stack = stack; |
|
|
617 | } |
|
|
618 | |
|
|
619 | static void |
|
|
620 | deallocate_stack (Coro__State ctx) |
|
|
621 | { |
|
|
622 | coro_stack *stack = ctx->stack; |
|
|
623 | |
|
|
624 | ctx->stack = 0; |
|
|
625 | |
|
|
626 | if (stack) |
|
|
627 | { |
|
|
628 | if (!--stack->refcnt) |
|
|
629 | { |
|
|
630 | #ifdef HAVE_MMAP |
|
|
631 | if (stack->ssize > 0 && stack->sptr) |
|
|
632 | munmap (stack->sptr, stack->ssize); |
|
|
633 | else |
|
|
634 | #endif |
|
|
635 | Safefree (stack->sptr); |
|
|
636 | |
|
|
637 | Safefree (stack); |
|
|
638 | } |
|
|
639 | else if (ctx->gencnt == stack->gencnt) |
|
|
640 | --stack->usecnt; |
|
|
641 | } |
|
|
642 | } |
|
|
643 | |
|
|
644 | static void |
|
|
645 | setup_coro (void *arg) |
|
|
646 | { |
536 | { |
647 | /* |
537 | /* |
648 | * emulate part of the perl startup here. |
538 | * emulate part of the perl startup here. |
649 | */ |
539 | */ |
650 | dTHX; |
540 | dTHX; |
651 | dSP; |
541 | dSP; |
652 | Coro__State ctx = (Coro__State)arg; |
542 | UNOP myop; |
653 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
543 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
654 | |
544 | |
655 | coro_init_stacks (aTHX); |
545 | coro_init_stacks (aTHX); |
656 | /*PL_curcop = 0;*/ |
546 | /*PL_curcop = 0;*/ |
657 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
547 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
658 | SvREFCNT_dec (GvAV (PL_defgv)); |
548 | SvREFCNT_dec (GvAV (PL_defgv)); |
659 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
549 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
660 | |
550 | |
661 | SPAGAIN; |
551 | SPAGAIN; |
662 | |
552 | |
663 | if (ctx->stack) |
553 | Zero (&myop, 1, UNOP); |
|
|
554 | myop.op_next = Nullop; |
|
|
555 | myop.op_flags = OPf_WANT_VOID; |
|
|
556 | |
|
|
557 | PL_op = (OP *)&myop; |
|
|
558 | |
|
|
559 | PUSHMARK(SP); |
|
|
560 | XPUSHs (sub_init); |
|
|
561 | PUTBACK; |
|
|
562 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
563 | SPAGAIN; |
|
|
564 | |
|
|
565 | ENTER; /* necessary e.g. for dounwind */ |
|
|
566 | } |
|
|
567 | |
|
|
568 | static void |
|
|
569 | free_coro_mortal () |
|
|
570 | { |
|
|
571 | if (coro_mortal) |
664 | { |
572 | { |
665 | ctx->cursp = 0; |
573 | dTHX; |
666 | |
574 | |
667 | PUSHMARK(SP); |
575 | SvREFCNT_dec (coro_mortal); |
668 | PUTBACK; |
576 | coro_mortal = 0; |
669 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
670 | |
|
|
671 | if (SvTRUE (ERRSV)) |
|
|
672 | croak (NULL); |
|
|
673 | else |
|
|
674 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
675 | } |
577 | } |
676 | else |
|
|
677 | { |
|
|
678 | UNOP myop; |
|
|
679 | |
|
|
680 | PL_op = (OP *)&myop; |
|
|
681 | |
|
|
682 | Zero(&myop, 1, UNOP); |
|
|
683 | myop.op_next = Nullop; |
|
|
684 | myop.op_flags = OPf_WANT_VOID; |
|
|
685 | |
|
|
686 | PUSHMARK(SP); |
|
|
687 | XPUSHs (sub_init); |
|
|
688 | /* |
|
|
689 | * the next line is slightly wrong, as PL_op->op_next |
|
|
690 | * is actually being executed so we skip the first op. |
|
|
691 | * that doesn't matter, though, since it is only |
|
|
692 | * pp_nextstate and we never return... |
|
|
693 | * ah yes, and I don't care anyways ;) |
|
|
694 | */ |
|
|
695 | PUTBACK; |
|
|
696 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
697 | SPAGAIN; |
|
|
698 | |
|
|
699 | ENTER; /* necessary e.g. for dounwind */ |
|
|
700 | } |
|
|
701 | } |
578 | } |
702 | |
579 | |
703 | static void |
580 | static void |
704 | continue_coro (void *arg) |
581 | coro_run (void *arg) |
705 | { |
582 | { |
706 | /* |
583 | /* |
707 | * this is a _very_ stripped down perl interpreter ;) |
584 | * this is a _very_ stripped down perl interpreter ;) |
708 | */ |
585 | */ |
709 | dTHX; |
586 | dTHX; |
710 | Coro__State ctx = (Coro__State)arg; |
587 | int ret; |
711 | JMPENV coro_start_env; |
|
|
712 | |
588 | |
|
|
589 | UNLOCK; |
|
|
590 | |
713 | PL_top_env = &ctx->start_env; |
591 | PL_top_env = &PL_start_env; |
714 | |
592 | |
715 | ctx->cursp = 0; |
593 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
716 | PL_op = PL_op->op_next; |
594 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
717 | CALLRUNOPS(aTHX); |
|
|
718 | |
595 | |
|
|
596 | /* continue at cctx_init, without entersub */ |
|
|
597 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
598 | |
|
|
599 | /* somebody will hit me for both perl_run and PL_restartop */ |
|
|
600 | ret = perl_run (aTHX_ PERL_GET_CONTEXT); |
|
|
601 | printf ("ret %d\n", ret);//D |
|
|
602 | |
|
|
603 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
719 | abort (); |
604 | abort (); |
720 | } |
605 | } |
721 | |
606 | |
722 | STATIC void |
607 | static coro_stack * |
|
|
608 | stack_new () |
|
|
609 | { |
|
|
610 | coro_stack *stack; |
|
|
611 | |
|
|
612 | New (0, stack, 1, coro_stack); |
|
|
613 | |
|
|
614 | #if HAVE_MMAP |
|
|
615 | |
|
|
616 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
|
|
617 | /* mmap suppsedly does allocate-on-write for us */ |
|
|
618 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
619 | |
|
|
620 | if (stack->sptr == (void *)-1) |
|
|
621 | { |
|
|
622 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
623 | _exit (EXIT_FAILURE); |
|
|
624 | } |
|
|
625 | |
|
|
626 | # if STACKGUARD |
|
|
627 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
628 | # endif |
|
|
629 | |
|
|
630 | #else |
|
|
631 | |
|
|
632 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
633 | New (0, stack->sptr, STACKSIZE, long); |
|
|
634 | |
|
|
635 | if (!stack->sptr) |
|
|
636 | { |
|
|
637 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
638 | _exit (EXIT_FAILURE); |
|
|
639 | } |
|
|
640 | |
|
|
641 | #endif |
|
|
642 | |
|
|
643 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
|
|
644 | |
|
|
645 | return stack; |
|
|
646 | } |
|
|
647 | |
|
|
648 | static void |
|
|
649 | stack_free (coro_stack *stack) |
|
|
650 | { |
|
|
651 | if (!stack) |
|
|
652 | return; |
|
|
653 | |
|
|
654 | #if HAVE_MMAP |
|
|
655 | munmap (stack->sptr, stack->ssize); |
|
|
656 | #else |
|
|
657 | Safefree (stack->sptr); |
|
|
658 | #endif |
|
|
659 | |
|
|
660 | Safefree (stack); |
|
|
661 | } |
|
|
662 | |
|
|
663 | static coro_stack *stack_first; |
|
|
664 | |
|
|
665 | static coro_stack * |
|
|
666 | stack_get () |
|
|
667 | { |
|
|
668 | coro_stack *stack; |
|
|
669 | |
|
|
670 | if (stack_first) |
|
|
671 | { |
|
|
672 | stack = stack_first; |
|
|
673 | stack_first = stack->next; |
|
|
674 | } |
|
|
675 | else |
|
|
676 | { |
|
|
677 | stack = stack_new (); |
|
|
678 | PL_op = PL_op->op_next; |
|
|
679 | } |
|
|
680 | |
|
|
681 | return stack; |
|
|
682 | } |
|
|
683 | |
|
|
684 | static void |
|
|
685 | stack_put (coro_stack *stack) |
|
|
686 | { |
|
|
687 | stack->next = stack_first; |
|
|
688 | stack_first = stack; |
|
|
689 | } |
|
|
690 | |
|
|
691 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
692 | static void |
723 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
693 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
724 | { |
694 | { |
725 | dSTACKLEVEL; |
695 | dSTACKLEVEL; |
726 | |
696 | |
|
|
697 | /* sometimes transfer is only called to set idle_sp */ |
|
|
698 | if (flags == TRANSFER_SET_STACKLEVEL) |
|
|
699 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
727 | if (prev != next) |
700 | else if (prev != next) |
728 | { |
701 | { |
|
|
702 | coro_stack *prev__stack; |
|
|
703 | |
|
|
704 | LOCK; |
|
|
705 | |
729 | if (next->mainstack) |
706 | if (next->mainstack) |
730 | { |
707 | { |
731 | LOCK; |
708 | /* coroutine already started */ |
732 | SAVE (prev, flags); |
709 | SAVE (prev, flags); |
733 | LOAD (next); |
710 | LOAD (next); |
734 | UNLOCK; |
|
|
735 | |
|
|
736 | /* mark this state as in-use */ |
|
|
737 | next->mainstack = 0; |
|
|
738 | next->tmps_ix = -2; |
|
|
739 | |
|
|
740 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
741 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
742 | { |
|
|
743 | if (!prev->stack) |
|
|
744 | allocate_stack (prev, 0); |
|
|
745 | else if (prev->cursp != stacklevel |
|
|
746 | && prev->stack->usecnt > 1) |
|
|
747 | { |
|
|
748 | prev->gencnt = ++prev->stack->gencnt; |
|
|
749 | prev->stack->usecnt = 1; |
|
|
750 | } |
|
|
751 | |
|
|
752 | /* has our stack been invalidated? */ |
|
|
753 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
754 | { |
|
|
755 | deallocate_stack (next); |
|
|
756 | allocate_stack (next, 1); |
|
|
757 | coro_create (&(next->stack->cctx), |
|
|
758 | continue_coro, (void *)next, |
|
|
759 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
760 | } |
|
|
761 | |
|
|
762 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
763 | prev->cursp = stacklevel; |
|
|
764 | /* don't add any code here */ |
|
|
765 | } |
|
|
766 | else |
|
|
767 | next->cursp = stacklevel; |
|
|
768 | } |
711 | } |
769 | else if (next->tmps_ix == -2) |
|
|
770 | croak ("tried to transfer to running coroutine"); |
|
|
771 | else |
712 | else |
772 | { |
713 | { |
773 | LOCK; |
714 | /* need to start coroutine */ |
774 | SAVE (prev, -1); /* first get rid of the old state */ |
715 | /* first get rid of the old state */ |
775 | UNLOCK; |
716 | SAVE (prev, -1); |
776 | |
717 | /* setup coroutine call */ |
777 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
778 | { |
|
|
779 | if (!prev->stack) |
|
|
780 | allocate_stack (prev, 0); |
|
|
781 | |
|
|
782 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
783 | { |
|
|
784 | PL_top_env = &next->start_env; |
|
|
785 | |
|
|
786 | setup_coro (next); |
|
|
787 | next->cursp = stacklevel; |
|
|
788 | |
|
|
789 | prev->stack->refcnt++; |
|
|
790 | prev->stack->usecnt++; |
|
|
791 | next->stack = prev->stack; |
|
|
792 | next->gencnt = prev->gencnt; |
|
|
793 | } |
|
|
794 | else |
|
|
795 | { |
|
|
796 | assert (!next->stack); |
|
|
797 | allocate_stack (next, 1); |
|
|
798 | coro_create (&(next->stack->cctx), |
|
|
799 | setup_coro, (void *)next, |
|
|
800 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
801 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
802 | prev->cursp = stacklevel; |
|
|
803 | /* don't add any code here */ |
|
|
804 | } |
|
|
805 | } |
|
|
806 | else |
|
|
807 | { |
|
|
808 | setup_coro (next); |
718 | setup_coro (next); |
809 | next->cursp = stacklevel; |
719 | /* need a stack */ |
810 | } |
720 | next->stack = 0; |
811 | } |
721 | } |
|
|
722 | |
|
|
723 | if (!prev->stack) |
|
|
724 | /* create a new empty context */ |
|
|
725 | Newz (0, prev->stack, 1, coro_stack); |
|
|
726 | |
|
|
727 | prev__stack = prev->stack; |
|
|
728 | |
|
|
729 | /* possibly "free" the stack */ |
|
|
730 | if (prev__stack->idle_sp == STACKLEVEL) |
|
|
731 | { |
|
|
732 | stack_put (prev__stack); |
|
|
733 | prev->stack = 0; |
|
|
734 | } |
|
|
735 | |
|
|
736 | if (!next->stack) |
|
|
737 | next->stack = stack_get (); |
|
|
738 | |
|
|
739 | if (prev__stack != next->stack) |
|
|
740 | { |
|
|
741 | prev__stack->top_env = PL_top_env; |
|
|
742 | PL_top_env = next->stack->top_env; |
|
|
743 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
744 | } |
|
|
745 | |
|
|
746 | free_coro_mortal (); |
|
|
747 | |
|
|
748 | UNLOCK; |
812 | } |
749 | } |
|
|
750 | } |
813 | |
751 | |
814 | LOCK; |
752 | /* use this function pointer to call the above function */ |
815 | if (coro_mortal) |
753 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
754 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
755 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
756 | |
|
|
757 | struct transfer_args |
|
|
758 | { |
|
|
759 | struct coro *prev, *next; |
|
|
760 | int flags; |
|
|
761 | }; |
|
|
762 | |
|
|
763 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
764 | |
|
|
765 | static void |
|
|
766 | coro_state_destroy (struct coro *coro) |
|
|
767 | { |
|
|
768 | if (coro->refcnt--) |
|
|
769 | return; |
|
|
770 | |
|
|
771 | if (coro->mainstack && coro->mainstack != main_mainstack) |
816 | { |
772 | { |
817 | SvREFCNT_dec (coro_mortal); |
773 | struct coro temp; |
|
|
774 | |
|
|
775 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
776 | LOAD (aTHX_ coro); |
|
|
777 | |
|
|
778 | destroy_stacks (aTHX); |
|
|
779 | |
|
|
780 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
781 | |
818 | coro_mortal = 0; |
782 | coro->mainstack = 0; |
819 | } |
783 | } |
820 | UNLOCK; |
|
|
821 | } |
|
|
822 | |
784 | |
823 | #define SV_CORO(sv,func) \ |
785 | stack_free (coro->stack); |
824 | do { \ |
786 | SvREFCNT_dec (coro->args); |
825 | if (SvROK (sv)) \ |
787 | Safefree (coro); |
826 | sv = SvRV (sv); \ |
788 | } |
827 | \ |
|
|
828 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
829 | { \ |
|
|
830 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
831 | \ |
|
|
832 | if (!he) \ |
|
|
833 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
834 | \ |
|
|
835 | (sv) = SvRV (HeVAL(he)); \ |
|
|
836 | } \ |
|
|
837 | \ |
|
|
838 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
839 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
840 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
841 | \ |
|
|
842 | } while(0) |
|
|
843 | |
789 | |
844 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
|
|
845 | |
|
|
846 | static void |
790 | static int |
|
|
791 | coro_state_clear (SV *sv, MAGIC *mg) |
|
|
792 | { |
|
|
793 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
794 | mg->mg_ptr = 0; |
|
|
795 | |
|
|
796 | coro_state_destroy (coro); |
|
|
797 | |
|
|
798 | return 0; |
|
|
799 | } |
|
|
800 | |
|
|
801 | static int |
|
|
802 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
|
|
803 | { |
|
|
804 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
805 | |
|
|
806 | ++coro->refcnt; |
|
|
807 | |
|
|
808 | return 0; |
|
|
809 | } |
|
|
810 | |
|
|
811 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
|
|
812 | |
|
|
813 | static struct coro * |
|
|
814 | SvSTATE (SV *coro) |
|
|
815 | { |
|
|
816 | HV *stash; |
|
|
817 | MAGIC *mg; |
|
|
818 | |
|
|
819 | if (SvROK (coro)) |
|
|
820 | coro = SvRV (coro); |
|
|
821 | |
|
|
822 | stash = SvSTASH (coro); |
|
|
823 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
824 | { |
|
|
825 | /* very slow, but rare, check */ |
|
|
826 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
827 | croak ("Coro::State object required"); |
|
|
828 | } |
|
|
829 | |
|
|
830 | mg = SvMAGIC (coro); |
|
|
831 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
832 | return (struct coro *)mg->mg_ptr; |
|
|
833 | } |
|
|
834 | |
|
|
835 | static void |
|
|
836 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
|
|
837 | { |
|
|
838 | ta->prev = SvSTATE (prev); |
|
|
839 | ta->next = SvSTATE (next); |
|
|
840 | ta->flags = flags; |
|
|
841 | } |
|
|
842 | |
|
|
843 | static void |
847 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
844 | api_transfer (SV *prev, SV *next, int flags) |
848 | { |
845 | { |
849 | SV_CORO (prev, "Coro::transfer"); |
846 | dTHX; |
850 | SV_CORO (next, "Coro::transfer"); |
847 | struct transfer_args ta; |
851 | |
848 | |
852 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
849 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
|
|
850 | TRANSFER (ta); |
853 | } |
851 | } |
854 | |
852 | |
855 | /** Coro ********************************************************************/ |
853 | /** Coro ********************************************************************/ |
856 | |
854 | |
857 | #define PRIO_MAX 3 |
855 | #define PRIO_MAX 3 |
… | |
… | |
861 | #define PRIO_IDLE -3 |
859 | #define PRIO_IDLE -3 |
862 | #define PRIO_MIN -4 |
860 | #define PRIO_MIN -4 |
863 | |
861 | |
864 | /* for Coro.pm */ |
862 | /* for Coro.pm */ |
865 | static GV *coro_current, *coro_idle; |
863 | static GV *coro_current, *coro_idle; |
866 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
864 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
867 | static int coro_nready; |
865 | static int coro_nready; |
868 | |
866 | |
869 | static void |
867 | static void |
870 | coro_enq (pTHX_ SV *sv) |
868 | coro_enq (pTHX_ SV *sv) |
871 | { |
869 | { |
|
|
870 | int prio; |
|
|
871 | |
872 | if (SvTYPE (sv) == SVt_PVHV) |
872 | if (SvTYPE (sv) != SVt_PVHV) |
873 | { |
|
|
874 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
875 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
876 | |
|
|
877 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
878 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
879 | : prio; |
|
|
880 | |
|
|
881 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
882 | coro_nready++; |
|
|
883 | |
|
|
884 | return; |
|
|
885 | } |
|
|
886 | |
|
|
887 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
873 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
874 | |
|
|
875 | prio = SvSTATE (sv)->prio; |
|
|
876 | |
|
|
877 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
878 | coro_nready++; |
888 | } |
879 | } |
889 | |
880 | |
890 | static SV * |
881 | static SV * |
891 | coro_deq (pTHX_ int min_prio) |
882 | coro_deq (pTHX_ int min_prio) |
892 | { |
883 | { |
… | |
… | |
895 | min_prio -= PRIO_MIN; |
886 | min_prio -= PRIO_MIN; |
896 | if (min_prio < 0) |
887 | if (min_prio < 0) |
897 | min_prio = 0; |
888 | min_prio = 0; |
898 | |
889 | |
899 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
890 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
900 | if (av_len (coro_ready[prio]) >= 0) |
891 | if (AvFILLp (coro_ready [prio]) >= 0) |
901 | { |
892 | { |
902 | coro_nready--; |
893 | coro_nready--; |
903 | return av_shift (coro_ready[prio]); |
894 | return av_shift (coro_ready [prio]); |
904 | } |
895 | } |
905 | |
896 | |
906 | return 0; |
897 | return 0; |
907 | } |
898 | } |
908 | |
899 | |
… | |
… | |
918 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
909 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
919 | UNLOCK; |
910 | UNLOCK; |
920 | } |
911 | } |
921 | |
912 | |
922 | static void |
913 | static void |
923 | api_schedule (void) |
914 | prepare_schedule (aTHX_ struct transfer_args *ta) |
924 | { |
915 | { |
925 | dTHX; |
|
|
926 | |
|
|
927 | SV *prev, *next; |
916 | SV *current, *prev, *next; |
928 | |
917 | |
929 | LOCK; |
918 | LOCK; |
930 | |
919 | |
931 | prev = SvRV (GvSV (coro_current)); |
920 | current = GvSV (coro_current); |
|
|
921 | |
|
|
922 | for (;;) |
|
|
923 | { |
|
|
924 | LOCK; |
|
|
925 | |
932 | next = coro_deq (aTHX_ PRIO_MIN); |
926 | next = coro_deq (aTHX_ PRIO_MIN); |
933 | |
927 | |
934 | if (!next) |
928 | if (next) |
935 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
929 | break; |
|
|
930 | |
|
|
931 | UNLOCK; |
|
|
932 | |
|
|
933 | { |
|
|
934 | dSP; |
|
|
935 | |
|
|
936 | ENTER; |
|
|
937 | SAVETMPS; |
|
|
938 | |
|
|
939 | PUSHMARK (SP); |
|
|
940 | PUTBACK; |
|
|
941 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
942 | |
|
|
943 | FREETMPS; |
|
|
944 | LEAVE; |
|
|
945 | } |
|
|
946 | } |
|
|
947 | |
|
|
948 | prev = SvRV (current); |
|
|
949 | SvRV (current) = next; |
936 | |
950 | |
937 | /* free this only after the transfer */ |
951 | /* free this only after the transfer */ |
|
|
952 | free_coro_mortal (); |
938 | coro_mortal = prev; |
953 | coro_mortal = prev; |
939 | SV_CORO (prev, "Coro::schedule"); |
|
|
940 | |
954 | |
941 | SvRV (GvSV (coro_current)) = next; |
955 | ta->prev = SvSTATE (prev); |
942 | |
956 | ta->next = SvSTATE (next); |
943 | SV_CORO (next, "Coro::schedule"); |
957 | ta->flags = TRANSFER_SAVE_ALL; |
944 | |
958 | |
945 | UNLOCK; |
959 | UNLOCK; |
946 | |
|
|
947 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
948 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
949 | } |
960 | } |
950 | |
961 | |
951 | static void |
962 | static void |
952 | api_cede (void) |
963 | prepare_cede (aTHX_ struct transfer_args *ta) |
953 | { |
964 | { |
954 | dTHX; |
|
|
955 | |
|
|
956 | LOCK; |
965 | LOCK; |
957 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
966 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
958 | UNLOCK; |
967 | UNLOCK; |
959 | |
968 | |
|
|
969 | prepare_schedule (ta); |
|
|
970 | } |
|
|
971 | |
|
|
972 | static void |
960 | api_schedule (); |
973 | api_schedule (void) |
|
|
974 | { |
|
|
975 | dTHX; |
|
|
976 | struct transfer_args ta; |
|
|
977 | |
|
|
978 | prepare_schedule (&ta); |
|
|
979 | TRANSFER (ta); |
|
|
980 | } |
|
|
981 | |
|
|
982 | static void |
|
|
983 | api_cede (void) |
|
|
984 | { |
|
|
985 | dTHX; |
|
|
986 | struct transfer_args ta; |
|
|
987 | |
|
|
988 | prepare_cede (&ta); |
|
|
989 | TRANSFER (ta); |
961 | } |
990 | } |
962 | |
991 | |
963 | MODULE = Coro::State PACKAGE = Coro::State |
992 | MODULE = Coro::State PACKAGE = Coro::State |
964 | |
993 | |
965 | PROTOTYPES: ENABLE |
994 | PROTOTYPES: DISABLE |
966 | |
995 | |
967 | BOOT: |
996 | BOOT: |
968 | { /* {} necessary for stoopid perl-5.6.x */ |
997 | { |
969 | #ifdef USE_ITHREADS |
998 | #ifdef USE_ITHREADS |
970 | MUTEX_INIT (&coro_mutex); |
999 | MUTEX_INIT (&coro_mutex); |
971 | #endif |
1000 | #endif |
|
|
1001 | BOOT_PAGESIZE; |
972 | |
1002 | |
973 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
974 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
|
|
975 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1003 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
976 | |
1004 | |
977 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1005 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
978 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1006 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
979 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1007 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
980 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
|
|
981 | |
1008 | |
982 | main_mainstack = PL_mainstack; |
1009 | main_mainstack = PL_mainstack; |
983 | |
1010 | |
984 | coroapi.ver = CORO_API_VERSION; |
1011 | coroapi.ver = CORO_API_VERSION; |
985 | coroapi.transfer = api_transfer; |
1012 | coroapi.transfer = api_transfer; |
986 | } |
|
|
987 | |
1013 | |
988 | Coro::State |
1014 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
989 | _newprocess(args) |
1015 | } |
990 | SV * args |
1016 | |
991 | PROTOTYPE: $ |
1017 | SV * |
|
|
1018 | new (char *klass, ...) |
992 | CODE: |
1019 | CODE: |
993 | Coro__State coro; |
1020 | { |
|
|
1021 | struct coro *coro; |
|
|
1022 | HV *hv; |
|
|
1023 | int i; |
994 | |
1024 | |
995 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
996 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
997 | |
|
|
998 | Newz (0, coro, 1, struct coro); |
1025 | Newz (0, coro, 1, struct coro); |
|
|
1026 | coro->args = newAV (); |
999 | |
1027 | |
1000 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1028 | hv = newHV (); |
|
|
1029 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1030 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1031 | |
|
|
1032 | for (i = 1; i < items; i++) |
|
|
1033 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1034 | |
1001 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
1035 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
1002 | /*coro->stack = 0;*/ |
1036 | /*coro->stack = 0;*/ |
1003 | |
1037 | } |
1004 | /* same as JMPENV_BOOTSTRAP */ |
|
|
1005 | /* we might be able to recycle start_env, but safe is safe */ |
|
|
1006 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
|
|
1007 | coro->start_env.je_ret = -1; |
|
|
1008 | coro->start_env.je_mustcatch = TRUE; |
|
|
1009 | |
|
|
1010 | RETVAL = coro; |
|
|
1011 | OUTPUT: |
1038 | OUTPUT: |
1012 | RETVAL |
1039 | RETVAL |
1013 | |
1040 | |
1014 | void |
1041 | void |
1015 | transfer(prev, next, flags) |
1042 | _set_stacklevel (...) |
1016 | SV *prev |
1043 | ALIAS: |
1017 | SV *next |
1044 | Coro::State::transfer = 1 |
1018 | int flags |
1045 | Coro::schedule = 2 |
1019 | PROTOTYPE: @ |
1046 | Coro::cede = 3 |
|
|
1047 | Coro::Cont::yield = 4 |
1020 | CODE: |
1048 | CODE: |
1021 | PUTBACK; |
1049 | { |
1022 | SV_CORO (next, "Coro::transfer"); |
1050 | struct transfer_args ta; |
1023 | SV_CORO (prev, "Coro::transfer"); |
1051 | |
1024 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1052 | switch (ix) |
1025 | SPAGAIN; |
1053 | { |
|
|
1054 | case 0: |
|
|
1055 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1056 | ta.next = 0; |
|
|
1057 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1058 | break; |
|
|
1059 | |
|
|
1060 | case 1: |
|
|
1061 | if (items != 3) |
|
|
1062 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1063 | |
|
|
1064 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1065 | break; |
|
|
1066 | |
|
|
1067 | case 2: |
|
|
1068 | prepare_schedule (&ta); |
|
|
1069 | break; |
|
|
1070 | |
|
|
1071 | case 3: |
|
|
1072 | prepare_cede (&ta); |
|
|
1073 | break; |
|
|
1074 | |
|
|
1075 | case 4: |
|
|
1076 | { |
|
|
1077 | SV *yieldstack; |
|
|
1078 | SV *sv; |
|
|
1079 | AV *defav = GvAV (PL_defgv); |
|
|
1080 | |
|
|
1081 | yieldstack = *hv_fetch ( |
|
|
1082 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1083 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1084 | 0 |
|
|
1085 | ); |
|
|
1086 | |
|
|
1087 | /* set up @_ -- ugly */ |
|
|
1088 | av_clear (defav); |
|
|
1089 | av_fill (defav, items - 1); |
|
|
1090 | while (items--) |
|
|
1091 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1092 | |
|
|
1093 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1094 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1095 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1096 | ta.flags = 0; |
|
|
1097 | SvREFCNT_dec (sv); |
|
|
1098 | } |
|
|
1099 | break; |
|
|
1100 | |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | TRANSFER (ta); |
|
|
1104 | } |
1026 | |
1105 | |
1027 | void |
1106 | void |
1028 | DESTROY(coro) |
1107 | _clone_state_from (SV *dst, SV *src) |
1029 | Coro::State coro |
1108 | CODE: |
1030 | CODE: |
1109 | { |
|
|
1110 | struct coro *coro_src = SvSTATE (src); |
1031 | |
1111 | |
1032 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1112 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
1033 | { |
|
|
1034 | struct coro temp; |
|
|
1035 | |
1113 | |
1036 | PUTBACK; |
1114 | ++coro_src->refcnt; |
1037 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1115 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1038 | LOAD (aTHX_ coro); |
1116 | } |
1039 | SPAGAIN; |
|
|
1040 | |
|
|
1041 | destroy_stacks (aTHX); |
|
|
1042 | |
|
|
1043 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1044 | SPAGAIN; |
|
|
1045 | |
|
|
1046 | coro->mainstack = 0; |
|
|
1047 | } |
|
|
1048 | |
|
|
1049 | deallocate_stack (coro); |
|
|
1050 | SvREFCNT_dec (coro->args); |
|
|
1051 | Safefree (coro); |
|
|
1052 | |
1117 | |
1053 | void |
1118 | void |
|
|
1119 | _nonlocal_goto (IV nextop) |
|
|
1120 | CODE: |
|
|
1121 | /* uuh, somebody will kill me again for this */ |
|
|
1122 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1123 | |
|
|
1124 | void |
1054 | _exit(code) |
1125 | _exit (code) |
1055 | int code |
1126 | int code |
1056 | PROTOTYPE: $ |
1127 | PROTOTYPE: $ |
1057 | CODE: |
1128 | CODE: |
1058 | _exit (code); |
1129 | _exit (code); |
1059 | |
1130 | |
1060 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
1061 | |
|
|
1062 | # this is slightly dirty (should expose a c-level api) |
|
|
1063 | |
|
|
1064 | void |
|
|
1065 | yield(...) |
|
|
1066 | PROTOTYPE: @ |
|
|
1067 | CODE: |
|
|
1068 | SV *yieldstack; |
|
|
1069 | SV *sv; |
|
|
1070 | AV *defav = GvAV (PL_defgv); |
|
|
1071 | struct coro *prev, *next; |
|
|
1072 | |
|
|
1073 | yieldstack = *hv_fetch ( |
|
|
1074 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1075 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1076 | 0 |
|
|
1077 | ); |
|
|
1078 | |
|
|
1079 | /* set up @_ -- ugly */ |
|
|
1080 | av_clear (defav); |
|
|
1081 | av_fill (defav, items - 1); |
|
|
1082 | while (items--) |
|
|
1083 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1084 | |
|
|
1085 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1086 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1087 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1088 | SvREFCNT_dec (sv); |
|
|
1089 | |
|
|
1090 | transfer (aTHX_ prev, next, 0); |
|
|
1091 | |
|
|
1092 | MODULE = Coro::State PACKAGE = Coro |
1131 | MODULE = Coro::State PACKAGE = Coro |
1093 | |
1132 | |
1094 | # this is slightly dirty (should expose a c-level api) |
|
|
1095 | |
|
|
1096 | BOOT: |
1133 | BOOT: |
1097 | { |
1134 | { |
1098 | int i; |
1135 | int i; |
|
|
1136 | |
1099 | HV *stash = gv_stashpv ("Coro", TRUE); |
1137 | coro_stash = gv_stashpv ("Coro", TRUE); |
1100 | |
1138 | |
1101 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1139 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1102 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1140 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1103 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1141 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1104 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1142 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1105 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1143 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1106 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1144 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1107 | |
1145 | |
1108 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1146 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
1109 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1147 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
1110 | |
1148 | |
1111 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1149 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
… | |
… | |
1119 | coroapi.ready = api_ready; |
1157 | coroapi.ready = api_ready; |
1120 | coroapi.nready = &coro_nready; |
1158 | coroapi.nready = &coro_nready; |
1121 | coroapi.current = coro_current; |
1159 | coroapi.current = coro_current; |
1122 | |
1160 | |
1123 | GCoroAPI = &coroapi; |
1161 | GCoroAPI = &coroapi; |
1124 | sv_setiv(sv, (IV)&coroapi); |
1162 | sv_setiv (sv, (IV)&coroapi); |
1125 | SvREADONLY_on(sv); |
1163 | SvREADONLY_on (sv); |
1126 | } |
1164 | } |
1127 | } |
1165 | } |
1128 | |
1166 | |
1129 | #if !PERL_MICRO |
1167 | int |
|
|
1168 | prio (Coro::State coro, int newprio = 0) |
|
|
1169 | ALIAS: |
|
|
1170 | nice = 1 |
|
|
1171 | CODE: |
|
|
1172 | { |
|
|
1173 | RETVAL = coro->prio; |
|
|
1174 | |
|
|
1175 | if (items > 1) |
|
|
1176 | { |
|
|
1177 | if (ix) |
|
|
1178 | newprio += coro->prio; |
|
|
1179 | |
|
|
1180 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1181 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1182 | |
|
|
1183 | coro->prio = newprio; |
|
|
1184 | } |
|
|
1185 | } |
1130 | |
1186 | |
1131 | void |
1187 | void |
1132 | ready(self) |
1188 | ready (SV *self) |
1133 | SV * self |
|
|
1134 | PROTOTYPE: $ |
1189 | PROTOTYPE: $ |
1135 | CODE: |
1190 | CODE: |
1136 | api_ready (self); |
1191 | api_ready (self); |
1137 | |
1192 | |
1138 | #endif |
|
|
1139 | |
|
|
1140 | int |
1193 | int |
1141 | nready(...) |
1194 | nready (...) |
1142 | PROTOTYPE: |
1195 | PROTOTYPE: |
1143 | CODE: |
1196 | CODE: |
1144 | RETVAL = coro_nready; |
1197 | RETVAL = coro_nready; |
1145 | OUTPUT: |
1198 | OUTPUT: |
1146 | RETVAL |
1199 | RETVAL |
1147 | |
1200 | |
1148 | void |
1201 | MODULE = Coro::State PACKAGE = Coro::AIO |
1149 | schedule(...) |
|
|
1150 | PROTOTYPE: |
|
|
1151 | CODE: |
|
|
1152 | api_schedule (); |
|
|
1153 | |
1202 | |
1154 | void |
|
|
1155 | cede(...) |
|
|
1156 | PROTOTYPE: |
|
|
1157 | CODE: |
|
|
1158 | api_cede (); |
|
|
1159 | |
|
|
1160 | # and these are hacks |
|
|
1161 | SV * |
1203 | SV * |
1162 | _aio_get_state () |
1204 | _get_state () |
1163 | CODE: |
1205 | CODE: |
1164 | { |
1206 | { |
1165 | struct { |
1207 | struct { |
1166 | int errorno; |
1208 | int errorno; |
1167 | int laststype; |
1209 | int laststype; |
… | |
… | |
1178 | } |
1220 | } |
1179 | OUTPUT: |
1221 | OUTPUT: |
1180 | RETVAL |
1222 | RETVAL |
1181 | |
1223 | |
1182 | void |
1224 | void |
1183 | _aio_set_state (char *data_) |
1225 | _set_state (char *data_) |
1184 | PROTOTYPE: $ |
1226 | PROTOTYPE: $ |
1185 | CODE: |
1227 | CODE: |
1186 | { |
1228 | { |
1187 | struct { |
1229 | struct { |
1188 | int errorno; |
1230 | int errorno; |