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1 | #ifdef USE_THREADS |
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2 | |
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3 | #ifdef WIN32 |
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4 | # include <win32thread.h> |
5 | #else |
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6 | |
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7 | /* POSIXish threads */ |
8 | typedef pthread_t perl_thread; |
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9 | #ifdef OLD_PTHREADS_API |
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10 | # define pthread_mutexattr_init(a) pthread_mutexattr_create(a) |
11 | # define pthread_mutexattr_settype(a,t) pthread_mutexattr_setkind_np(a,t) |
12 | # define pthread_key_create(k,d) pthread_keycreate(k,(pthread_destructor_t)(d)) |
13 | # define YIELD pthread_yield() |
14 | # define DETACH(t) \ |
15 | STMT_START { \ |
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16 | if (pthread_detach(&(t)->self)) { \ |
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17 | MUTEX_UNLOCK(&(t)->mutex); \ |
18 | croak("panic: DETACH"); \ |
19 | } \ |
20 | } STMT_END |
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21 | #else |
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22 | # define pthread_mutexattr_default NULL |
23 | # define pthread_condattr_default NULL |
24 | # define pthread_attr_default NULL |
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25 | #endif /* OLD_PTHREADS_API */ |
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26 | #endif |
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27 | |
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28 | #ifndef YIELD |
29 | # define YIELD sched_yield() |
30 | #endif |
31 | |
32 | #ifndef MUTEX_INIT |
33 | #define MUTEX_INIT(m) \ |
34 | STMT_START { \ |
35 | if (pthread_mutex_init((m), pthread_mutexattr_default)) \ |
36 | croak("panic: MUTEX_INIT"); \ |
37 | } STMT_END |
38 | #define MUTEX_LOCK(m) \ |
39 | STMT_START { \ |
40 | if (pthread_mutex_lock((m))) \ |
41 | croak("panic: MUTEX_LOCK"); \ |
42 | } STMT_END |
43 | #define MUTEX_UNLOCK(m) \ |
44 | STMT_START { \ |
45 | if (pthread_mutex_unlock((m))) \ |
46 | croak("panic: MUTEX_UNLOCK"); \ |
47 | } STMT_END |
48 | #define MUTEX_DESTROY(m) \ |
49 | STMT_START { \ |
50 | if (pthread_mutex_destroy((m))) \ |
51 | croak("panic: MUTEX_DESTROY"); \ |
52 | } STMT_END |
53 | #endif /* MUTEX_INIT */ |
54 | |
55 | #ifndef COND_INIT |
56 | #define COND_INIT(c) \ |
57 | STMT_START { \ |
58 | if (pthread_cond_init((c), pthread_condattr_default)) \ |
59 | croak("panic: COND_INIT"); \ |
60 | } STMT_END |
61 | #define COND_SIGNAL(c) \ |
62 | STMT_START { \ |
63 | if (pthread_cond_signal((c))) \ |
64 | croak("panic: COND_SIGNAL"); \ |
65 | } STMT_END |
66 | #define COND_BROADCAST(c) \ |
67 | STMT_START { \ |
68 | if (pthread_cond_broadcast((c))) \ |
69 | croak("panic: COND_BROADCAST"); \ |
70 | } STMT_END |
71 | #define COND_WAIT(c, m) \ |
72 | STMT_START { \ |
73 | if (pthread_cond_wait((c), (m))) \ |
74 | croak("panic: COND_WAIT"); \ |
75 | } STMT_END |
76 | #define COND_DESTROY(c) \ |
77 | STMT_START { \ |
78 | if (pthread_cond_destroy((c))) \ |
79 | croak("panic: COND_DESTROY"); \ |
80 | } STMT_END |
81 | #endif /* COND_INIT */ |
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82 | |
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83 | /* DETACH(t) must only be called while holding t->mutex */ |
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84 | #ifndef DETACH |
85 | #define DETACH(t) \ |
86 | STMT_START { \ |
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87 | if (pthread_detach((t)->self)) { \ |
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88 | MUTEX_UNLOCK(&(t)->mutex); \ |
89 | croak("panic: DETACH"); \ |
90 | } \ |
91 | } STMT_END |
92 | #endif /* DETACH */ |
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93 | |
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94 | #ifndef JOIN |
95 | #define JOIN(t, avp) \ |
96 | STMT_START { \ |
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97 | if (pthread_join((t)->self, (void**)(avp))) \ |
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98 | croak("panic: pthread_join"); \ |
99 | } STMT_END |
100 | #endif /* JOIN */ |
101 | |
102 | #ifndef SET_THR |
103 | #define SET_THR(t) \ |
104 | STMT_START { \ |
105 | if (pthread_setspecific(thr_key, (void *) (t))) \ |
106 | croak("panic: pthread_setspecific"); \ |
107 | } STMT_END |
108 | #endif /* SET_THR */ |
109 | |
110 | #ifndef THR |
111 | # ifdef OLD_PTHREADS_API |
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112 | struct thread *getTHR _((void)); |
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113 | # define THR getTHR() |
114 | # else |
115 | # define THR ((struct thread *) pthread_getspecific(thr_key)) |
116 | # endif /* OLD_PTHREADS_API */ |
117 | #endif /* THR */ |
118 | |
119 | #ifndef dTHR |
120 | # define dTHR struct thread *thr = THR |
121 | #endif /* dTHR */ |
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122 | |
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123 | #ifndef INIT_THREADS |
124 | # ifdef NEED_PTHREAD_INIT |
125 | # define INIT_THREADS pthread_init() |
126 | # else |
127 | # define INIT_THREADS NOOP |
128 | # endif |
129 | #endif |
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130 | |
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131 | #ifndef THREAD_RET_TYPE |
132 | # define THREAD_RET_TYPE void * |
133 | # define THREAD_RET_CAST(p) ((void *)(p)) |
134 | #endif /* THREAD_RET */ |
135 | |
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136 | struct thread { |
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137 | /* The fields that used to be global */ |
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138 | /* Important ones in the first cache line (if alignment is done right) */ |
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139 | SV ** Tstack_sp; |
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140 | #ifdef OP_IN_REGISTER |
141 | OP * Topsave; |
142 | #else |
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143 | OP * Top; |
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144 | #endif |
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145 | SV ** Tcurpad; |
146 | SV ** Tstack_base; |
147 | |
148 | SV ** Tstack_max; |
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149 | |
150 | I32 * Tscopestack; |
151 | I32 Tscopestack_ix; |
152 | I32 Tscopestack_max; |
153 | |
154 | ANY * Tsavestack; |
155 | I32 Tsavestack_ix; |
156 | I32 Tsavestack_max; |
157 | |
158 | OP ** Tretstack; |
159 | I32 Tretstack_ix; |
160 | I32 Tretstack_max; |
161 | |
162 | I32 * Tmarkstack; |
163 | I32 * Tmarkstack_ptr; |
164 | I32 * Tmarkstack_max; |
165 | |
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166 | SV * TSv; |
167 | XPV * TXpv; |
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168 | struct stat Tstatbuf; |
169 | struct tms Ttimesbuf; |
170 | |
171 | /* XXX What about regexp stuff? */ |
172 | |
173 | /* Now the fields that used to be "per interpreter" (even when global) */ |
174 | |
175 | /* XXX What about magic variables such as $/, $? and so on? */ |
176 | HV * Tdefstash; |
177 | HV * Tcurstash; |
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178 | |
179 | SV ** Ttmps_stack; |
180 | I32 Ttmps_ix; |
181 | I32 Ttmps_floor; |
182 | I32 Ttmps_max; |
183 | |
184 | int Tin_eval; |
185 | OP * Trestartop; |
186 | int Tdelaymagic; |
187 | bool Tdirty; |
188 | U8 Tlocalizing; |
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189 | COP * Tcurcop; |
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190 | |
191 | CONTEXT * Tcxstack; |
192 | I32 Tcxstack_ix; |
193 | I32 Tcxstack_max; |
194 | |
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195 | AV * Tcurstack; |
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196 | AV * Tmainstack; |
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197 | JMPENV * Ttop_env; |
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198 | I32 Trunlevel; |
199 | |
200 | /* XXX Sort stuff, firstgv, secongv and so on? */ |
201 | |
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202 | SV * Toursv; |
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203 | HV * Tcvcache; |
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204 | perl_thread self; /* Underlying thread object */ |
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205 | U32 flags; |
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206 | perl_mutex mutex; /* For the fields others can change */ |
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207 | U32 tid; |
208 | struct thread *next, *prev; /* Circular linked list of threads */ |
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209 | |
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210 | #ifdef ADD_THREAD_INTERN |
211 | struct thread_intern i; /* Platform-dependent internals */ |
212 | #endif |
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213 | char trailing_nul; /* For the sake of thrsv, t->Toursv */ |
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214 | }; |
215 | |
216 | typedef struct thread *Thread; |
217 | |
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218 | /* Values and macros for thr->flags */ |
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219 | #define THRf_STATE_MASK 7 |
220 | #define THRf_R_JOINABLE 0 |
221 | #define THRf_R_JOINED 1 |
222 | #define THRf_R_DETACHED 2 |
223 | #define THRf_ZOMBIE 3 |
224 | #define THRf_DEAD 4 |
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225 | |
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226 | #define THRf_DIE_FATAL 8 |
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227 | |
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228 | /* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */ |
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229 | #define ThrSTATE(t) ((t)->flags) |
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230 | #define ThrSETSTATE(t, s) STMT_START { \ |
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231 | (t)->flags &= ~THRf_STATE_MASK; \ |
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232 | (t)->flags |= (s); \ |
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233 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), \ |
234 | "thread %p set to state %d\n", (t), (s))); \ |
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235 | } STMT_END |
236 | |
237 | typedef struct condpair { |
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238 | perl_mutex mutex; /* Protects all other fields */ |
239 | perl_cond owner_cond; /* For when owner changes at all */ |
240 | perl_cond cond; /* For cond_signal and cond_broadcast */ |
241 | Thread owner; /* Currently owning thread */ |
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242 | } condpair_t; |
243 | |
244 | #define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex) |
245 | #define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond) |
246 | #define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond) |
247 | #define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner |
248 | |
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249 | #undef stack_base |
250 | #undef stack_sp |
251 | #undef stack_max |
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252 | #undef curstack |
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253 | #undef mainstack |
254 | #undef markstack |
255 | #undef markstack_ptr |
256 | #undef markstack_max |
257 | #undef scopestack |
258 | #undef scopestack_ix |
259 | #undef scopestack_max |
260 | #undef savestack |
261 | #undef savestack_ix |
262 | #undef savestack_max |
263 | #undef retstack |
264 | #undef retstack_ix |
265 | #undef retstack_max |
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266 | #undef curcop |
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267 | #undef cxstack |
268 | #undef cxstack_ix |
269 | #undef cxstack_max |
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270 | #undef defstash |
271 | #undef curstash |
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272 | #undef tmps_stack |
273 | #undef tmps_floor |
274 | #undef tmps_ix |
275 | #undef tmps_max |
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276 | #undef curpad |
277 | #undef Sv |
278 | #undef Xpv |
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279 | #undef statbuf |
280 | #undef timesbuf |
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281 | #undef top_env |
282 | #undef runlevel |
283 | #undef in_eval |
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284 | #undef restartop |
285 | #undef delaymagic |
286 | #undef dirty |
287 | #undef localizing |
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288 | |
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289 | #define oursv (thr->Toursv) |
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290 | #define stack_base (thr->Tstack_base) |
291 | #define stack_sp (thr->Tstack_sp) |
292 | #define stack_max (thr->Tstack_max) |
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293 | #ifdef OP_IN_REGISTER |
294 | #define opsave (thr->Topsave) |
295 | #else |
296 | #undef op |
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297 | #define op (thr->Top) |
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298 | #endif |
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299 | #define curcop (thr->Tcurcop) |
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300 | #define stack (thr->Tstack) |
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301 | #define curstack (thr->Tcurstack) |
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302 | #define mainstack (thr->Tmainstack) |
303 | #define markstack (thr->Tmarkstack) |
304 | #define markstack_ptr (thr->Tmarkstack_ptr) |
305 | #define markstack_max (thr->Tmarkstack_max) |
306 | #define scopestack (thr->Tscopestack) |
307 | #define scopestack_ix (thr->Tscopestack_ix) |
308 | #define scopestack_max (thr->Tscopestack_max) |
309 | |
310 | #define savestack (thr->Tsavestack) |
311 | #define savestack_ix (thr->Tsavestack_ix) |
312 | #define savestack_max (thr->Tsavestack_max) |
313 | |
314 | #define retstack (thr->Tretstack) |
315 | #define retstack_ix (thr->Tretstack_ix) |
316 | #define retstack_max (thr->Tretstack_max) |
317 | |
318 | #define cxstack (thr->Tcxstack) |
319 | #define cxstack_ix (thr->Tcxstack_ix) |
320 | #define cxstack_max (thr->Tcxstack_max) |
321 | |
322 | #define curpad (thr->Tcurpad) |
323 | #define Sv (thr->TSv) |
324 | #define Xpv (thr->TXpv) |
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325 | #define statbuf (thr->Tstatbuf) |
326 | #define timesbuf (thr->Ttimesbuf) |
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327 | #define defstash (thr->Tdefstash) |
328 | #define curstash (thr->Tcurstash) |
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329 | |
330 | #define tmps_stack (thr->Ttmps_stack) |
331 | #define tmps_ix (thr->Ttmps_ix) |
332 | #define tmps_floor (thr->Ttmps_floor) |
333 | #define tmps_max (thr->Ttmps_max) |
334 | |
335 | #define in_eval (thr->Tin_eval) |
336 | #define restartop (thr->Trestartop) |
337 | #define delaymagic (thr->Tdelaymagic) |
338 | #define dirty (thr->Tdirty) |
339 | #define localizing (thr->Tlocalizing) |
340 | |
341 | #define top_env (thr->Ttop_env) |
342 | #define runlevel (thr->Trunlevel) |
343 | |
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344 | #define cvcache (thr->Tcvcache) |
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345 | #else |
346 | /* USE_THREADS is not defined */ |
347 | #define MUTEX_LOCK(m) |
348 | #define MUTEX_UNLOCK(m) |
349 | #define MUTEX_INIT(m) |
350 | #define MUTEX_DESTROY(m) |
351 | #define COND_INIT(c) |
352 | #define COND_SIGNAL(c) |
353 | #define COND_BROADCAST(c) |
354 | #define COND_WAIT(c, m) |
355 | #define COND_DESTROY(c) |
356 | |
357 | #define THR |
358 | /* Rats: if dTHR is just blank then the subsequent ";" throws an error */ |
359 | #define dTHR extern int errno |
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360 | #endif /* USE_THREADS */ |