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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 */ |
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8 | typedef pthread_t perl_os_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 |
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29 | # ifdef HAS_PTHREAD_YIELD |
30 | # define YIELD pthread_yield() |
31 | # else |
32 | # define YIELD sched_yield() |
33 | # endif |
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34 | #endif |
35 | |
36 | #ifndef MUTEX_INIT |
37 | #define MUTEX_INIT(m) \ |
38 | STMT_START { \ |
39 | if (pthread_mutex_init((m), pthread_mutexattr_default)) \ |
40 | croak("panic: MUTEX_INIT"); \ |
41 | } STMT_END |
42 | #define MUTEX_LOCK(m) \ |
43 | STMT_START { \ |
44 | if (pthread_mutex_lock((m))) \ |
45 | croak("panic: MUTEX_LOCK"); \ |
46 | } STMT_END |
47 | #define MUTEX_UNLOCK(m) \ |
48 | STMT_START { \ |
49 | if (pthread_mutex_unlock((m))) \ |
50 | croak("panic: MUTEX_UNLOCK"); \ |
51 | } STMT_END |
52 | #define MUTEX_DESTROY(m) \ |
53 | STMT_START { \ |
54 | if (pthread_mutex_destroy((m))) \ |
55 | croak("panic: MUTEX_DESTROY"); \ |
56 | } STMT_END |
57 | #endif /* MUTEX_INIT */ |
58 | |
59 | #ifndef COND_INIT |
60 | #define COND_INIT(c) \ |
61 | STMT_START { \ |
62 | if (pthread_cond_init((c), pthread_condattr_default)) \ |
63 | croak("panic: COND_INIT"); \ |
64 | } STMT_END |
65 | #define COND_SIGNAL(c) \ |
66 | STMT_START { \ |
67 | if (pthread_cond_signal((c))) \ |
68 | croak("panic: COND_SIGNAL"); \ |
69 | } STMT_END |
70 | #define COND_BROADCAST(c) \ |
71 | STMT_START { \ |
72 | if (pthread_cond_broadcast((c))) \ |
73 | croak("panic: COND_BROADCAST"); \ |
74 | } STMT_END |
75 | #define COND_WAIT(c, m) \ |
76 | STMT_START { \ |
77 | if (pthread_cond_wait((c), (m))) \ |
78 | croak("panic: COND_WAIT"); \ |
79 | } STMT_END |
80 | #define COND_DESTROY(c) \ |
81 | STMT_START { \ |
82 | if (pthread_cond_destroy((c))) \ |
83 | croak("panic: COND_DESTROY"); \ |
84 | } STMT_END |
85 | #endif /* COND_INIT */ |
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86 | |
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87 | /* DETACH(t) must only be called while holding t->mutex */ |
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88 | #ifndef DETACH |
89 | #define DETACH(t) \ |
90 | STMT_START { \ |
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91 | if (pthread_detach((t)->self)) { \ |
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92 | MUTEX_UNLOCK(&(t)->mutex); \ |
93 | croak("panic: DETACH"); \ |
94 | } \ |
95 | } STMT_END |
96 | #endif /* DETACH */ |
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97 | |
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98 | #ifndef JOIN |
99 | #define JOIN(t, avp) \ |
100 | STMT_START { \ |
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101 | if (pthread_join((t)->self, (void**)(avp))) \ |
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102 | croak("panic: pthread_join"); \ |
103 | } STMT_END |
104 | #endif /* JOIN */ |
105 | |
106 | #ifndef SET_THR |
107 | #define SET_THR(t) \ |
108 | STMT_START { \ |
109 | if (pthread_setspecific(thr_key, (void *) (t))) \ |
110 | croak("panic: pthread_setspecific"); \ |
111 | } STMT_END |
112 | #endif /* SET_THR */ |
113 | |
114 | #ifndef THR |
115 | # ifdef OLD_PTHREADS_API |
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116 | struct perl_thread *getTHR _((void)); |
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117 | # define THR getTHR() |
118 | # else |
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119 | # define THR ((struct perl_thread *) pthread_getspecific(thr_key)) |
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120 | # endif /* OLD_PTHREADS_API */ |
121 | #endif /* THR */ |
122 | |
123 | #ifndef dTHR |
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124 | # define dTHR struct perl_thread *thr = THR |
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125 | #endif /* dTHR */ |
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126 | |
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127 | #ifndef INIT_THREADS |
128 | # ifdef NEED_PTHREAD_INIT |
129 | # define INIT_THREADS pthread_init() |
130 | # else |
131 | # define INIT_THREADS NOOP |
132 | # endif |
133 | #endif |
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134 | |
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135 | |
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136 | #ifndef THREAD_RET_TYPE |
137 | # define THREAD_RET_TYPE void * |
138 | # define THREAD_RET_CAST(p) ((void *)(p)) |
139 | #endif /* THREAD_RET */ |
140 | |
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141 | struct perl_thread { |
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142 | /* The fields that used to be global */ |
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143 | /* Important ones in the first cache line (if alignment is done right) */ |
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144 | SV ** Tstack_sp; |
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145 | #ifdef OP_IN_REGISTER |
146 | OP * Topsave; |
147 | #else |
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148 | OP * Top; |
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149 | #endif |
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150 | SV ** Tcurpad; |
151 | SV ** Tstack_base; |
152 | |
153 | SV ** Tstack_max; |
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154 | |
155 | I32 * Tscopestack; |
156 | I32 Tscopestack_ix; |
157 | I32 Tscopestack_max; |
158 | |
159 | ANY * Tsavestack; |
160 | I32 Tsavestack_ix; |
161 | I32 Tsavestack_max; |
162 | |
163 | OP ** Tretstack; |
164 | I32 Tretstack_ix; |
165 | I32 Tretstack_max; |
166 | |
167 | I32 * Tmarkstack; |
168 | I32 * Tmarkstack_ptr; |
169 | I32 * Tmarkstack_max; |
170 | |
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171 | SV * TSv; |
172 | XPV * TXpv; |
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173 | struct stat Tstatbuf; |
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174 | #ifdef HAS_TIMES |
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175 | struct tms Ttimesbuf; |
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176 | #endif |
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177 | |
178 | /* XXX What about regexp stuff? */ |
179 | |
180 | /* Now the fields that used to be "per interpreter" (even when global) */ |
181 | |
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182 | /* Fields used by magic variables such as $@, $/ and so on */ |
183 | bool Ttainted; |
184 | PMOP * Tcurpm; |
185 | SV * Tnrs; |
186 | SV * Trs; |
187 | GV * Tlast_in_gv; |
188 | char * Tofs; |
189 | STRLEN Tofslen; |
190 | GV * Tdefoutgv; |
191 | char * Tchopset; |
192 | SV * Tformtarget; |
193 | SV * Tbodytarget; |
194 | SV * Ttoptarget; |
195 | |
196 | /* Stashes */ |
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197 | HV * Tdefstash; |
198 | HV * Tcurstash; |
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199 | |
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200 | /* Stacks */ |
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201 | SV ** Ttmps_stack; |
202 | I32 Ttmps_ix; |
203 | I32 Ttmps_floor; |
204 | I32 Ttmps_max; |
205 | |
206 | int Tin_eval; |
207 | OP * Trestartop; |
208 | int Tdelaymagic; |
209 | bool Tdirty; |
210 | U8 Tlocalizing; |
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211 | COP * Tcurcop; |
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212 | |
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213 | PERL_CONTEXT * Tcxstack; |
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214 | I32 Tcxstack_ix; |
215 | I32 Tcxstack_max; |
216 | |
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217 | AV * Tcurstack; |
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218 | AV * Tmainstack; |
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219 | JMPENV * Ttop_env; |
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220 | |
221 | /* XXX Sort stuff, firstgv, secongv and so on? */ |
222 | |
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223 | SV * oursv; |
224 | HV * cvcache; |
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225 | perl_os_thread self; /* Underlying thread object */ |
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226 | U32 flags; |
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227 | AV * threadsv; /* Per-thread SVs ($_, $@ etc.) */ |
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228 | AV * specific; /* Thread-specific user data */ |
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229 | SV * errsv; /* Backing SV for $@ */ |
230 | HV * errhv; /* HV for what was %@ in pp_ctl.c */ |
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231 | perl_mutex mutex; /* For the fields others can change */ |
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232 | U32 tid; |
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233 | struct perl_thread *next, *prev; /* Circular linked list of threads */ |
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234 | JMPENV Tstart_env; /* Top of top_env longjmp() chain */ |
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235 | #ifdef HAVE_THREAD_INTERN |
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236 | struct thread_intern i; /* Platform-dependent internals */ |
237 | #endif |
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238 | char trailing_nul; /* For the sake of thrsv and oursv */ |
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239 | }; |
240 | |
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241 | typedef struct perl_thread *Thread; |
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242 | |
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243 | /* Values and macros for thr->flags */ |
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244 | #define THRf_STATE_MASK 7 |
245 | #define THRf_R_JOINABLE 0 |
246 | #define THRf_R_JOINED 1 |
247 | #define THRf_R_DETACHED 2 |
248 | #define THRf_ZOMBIE 3 |
249 | #define THRf_DEAD 4 |
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250 | |
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251 | #define THRf_DID_DIE 8 |
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252 | |
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253 | /* ThrSTATE(t) and ThrSETSTATE(t) must only be called while holding t->mutex */ |
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254 | #define ThrSTATE(t) ((t)->flags & THRf_STATE_MASK) |
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255 | #define ThrSETSTATE(t, s) STMT_START { \ |
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256 | (t)->flags &= ~THRf_STATE_MASK; \ |
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257 | (t)->flags |= (s); \ |
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258 | DEBUG_L(PerlIO_printf(PerlIO_stderr(), \ |
259 | "thread %p set to state %d\n", (t), (s))); \ |
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260 | } STMT_END |
261 | |
262 | typedef struct condpair { |
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263 | perl_mutex mutex; /* Protects all other fields */ |
264 | perl_cond owner_cond; /* For when owner changes at all */ |
265 | perl_cond cond; /* For cond_signal and cond_broadcast */ |
266 | Thread owner; /* Currently owning thread */ |
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267 | } condpair_t; |
268 | |
269 | #define MgMUTEXP(mg) (&((condpair_t *)(mg->mg_ptr))->mutex) |
270 | #define MgOWNERCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->owner_cond) |
271 | #define MgCONDP(mg) (&((condpair_t *)(mg->mg_ptr))->cond) |
272 | #define MgOWNER(mg) ((condpair_t *)(mg->mg_ptr))->owner |
273 | |
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274 | #undef stack_base |
275 | #undef stack_sp |
276 | #undef stack_max |
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277 | #undef curstack |
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278 | #undef mainstack |
279 | #undef markstack |
280 | #undef markstack_ptr |
281 | #undef markstack_max |
282 | #undef scopestack |
283 | #undef scopestack_ix |
284 | #undef scopestack_max |
285 | #undef savestack |
286 | #undef savestack_ix |
287 | #undef savestack_max |
288 | #undef retstack |
289 | #undef retstack_ix |
290 | #undef retstack_max |
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291 | #undef curcop |
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292 | #undef cxstack |
293 | #undef cxstack_ix |
294 | #undef cxstack_max |
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295 | #undef defstash |
296 | #undef curstash |
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297 | #undef tmps_stack |
298 | #undef tmps_floor |
299 | #undef tmps_ix |
300 | #undef tmps_max |
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301 | #undef curpad |
302 | #undef Sv |
303 | #undef Xpv |
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304 | #undef statbuf |
305 | #undef timesbuf |
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306 | #undef tainted |
307 | #undef curpm |
308 | #undef nrs |
309 | #undef rs |
310 | #undef last_in_gv |
311 | #undef ofs |
312 | #undef ofslen |
313 | #undef defoutgv |
314 | #undef chopset |
315 | #undef formtarget |
316 | #undef bodytarget |
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317 | #undef start_env |
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318 | #undef toptarget |
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319 | #undef top_env |
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320 | #undef in_eval |
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321 | #undef restartop |
322 | #undef delaymagic |
323 | #undef dirty |
324 | #undef localizing |
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325 | |
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326 | #define stack_base (thr->Tstack_base) |
327 | #define stack_sp (thr->Tstack_sp) |
328 | #define stack_max (thr->Tstack_max) |
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329 | #ifdef OP_IN_REGISTER |
330 | #define opsave (thr->Topsave) |
331 | #else |
332 | #undef op |
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333 | #define op (thr->Top) |
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334 | #endif |
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335 | #define curcop (thr->Tcurcop) |
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336 | #define stack (thr->Tstack) |
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337 | #define curstack (thr->Tcurstack) |
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338 | #define mainstack (thr->Tmainstack) |
339 | #define markstack (thr->Tmarkstack) |
340 | #define markstack_ptr (thr->Tmarkstack_ptr) |
341 | #define markstack_max (thr->Tmarkstack_max) |
342 | #define scopestack (thr->Tscopestack) |
343 | #define scopestack_ix (thr->Tscopestack_ix) |
344 | #define scopestack_max (thr->Tscopestack_max) |
345 | |
346 | #define savestack (thr->Tsavestack) |
347 | #define savestack_ix (thr->Tsavestack_ix) |
348 | #define savestack_max (thr->Tsavestack_max) |
349 | |
350 | #define retstack (thr->Tretstack) |
351 | #define retstack_ix (thr->Tretstack_ix) |
352 | #define retstack_max (thr->Tretstack_max) |
353 | |
354 | #define cxstack (thr->Tcxstack) |
355 | #define cxstack_ix (thr->Tcxstack_ix) |
356 | #define cxstack_max (thr->Tcxstack_max) |
357 | |
358 | #define curpad (thr->Tcurpad) |
359 | #define Sv (thr->TSv) |
360 | #define Xpv (thr->TXpv) |
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361 | #define statbuf (thr->Tstatbuf) |
362 | #define timesbuf (thr->Ttimesbuf) |
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363 | #define tainted (thr->Ttainted) |
364 | #define tainted (thr->Ttainted) |
365 | #define curpm (thr->Tcurpm) |
366 | #define nrs (thr->Tnrs) |
367 | #define rs (thr->Trs) |
368 | #define last_in_gv (thr->Tlast_in_gv) |
369 | #define ofs (thr->Tofs) |
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370 | #define ofslen (thr->Tofslen) |
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371 | #define defoutgv (thr->Tdefoutgv) |
372 | #define chopset (thr->Tchopset) |
373 | #define formtarget (thr->Tformtarget) |
374 | #define bodytarget (thr->Tbodytarget) |
375 | #define toptarget (thr->Ttoptarget) |
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376 | #define defstash (thr->Tdefstash) |
377 | #define curstash (thr->Tcurstash) |
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378 | |
379 | #define tmps_stack (thr->Ttmps_stack) |
380 | #define tmps_ix (thr->Ttmps_ix) |
381 | #define tmps_floor (thr->Ttmps_floor) |
382 | #define tmps_max (thr->Ttmps_max) |
383 | |
384 | #define in_eval (thr->Tin_eval) |
385 | #define restartop (thr->Trestartop) |
386 | #define delaymagic (thr->Tdelaymagic) |
387 | #define dirty (thr->Tdirty) |
388 | #define localizing (thr->Tlocalizing) |
389 | |
390 | #define top_env (thr->Ttop_env) |
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391 | #define start_env (thr->Tstart_env) |
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392 | |
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393 | #else |
394 | /* USE_THREADS is not defined */ |
395 | #define MUTEX_LOCK(m) |
396 | #define MUTEX_UNLOCK(m) |
397 | #define MUTEX_INIT(m) |
398 | #define MUTEX_DESTROY(m) |
399 | #define COND_INIT(c) |
400 | #define COND_SIGNAL(c) |
401 | #define COND_BROADCAST(c) |
402 | #define COND_WAIT(c, m) |
403 | #define COND_DESTROY(c) |
404 | |
405 | #define THR |
406 | /* Rats: if dTHR is just blank then the subsequent ";" throws an error */ |
407 | #define dTHR extern int errno |
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408 | #endif /* USE_THREADS */ |