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1 | #include "threads.h" |
2 | |
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3 | /* |
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4 | * Starts executing the thread. Needs to clean up memory a tad better. |
5 | */ |
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6 | |
7 | #ifdef WIN32 |
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8 | THREAD_RET_TYPE Perl_thread_run(LPVOID arg) { |
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9 | #else |
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10 | void* Perl_thread_run(void * arg) { |
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11 | #endif |
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12 | ithread* thread = (ithread*) arg; |
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13 | SV* thread_tid_ptr; |
14 | SV* thread_ptr; |
15 | dTHXa(thread->interp); |
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16 | PERL_SET_CONTEXT(thread->interp); |
17 | |
18 | #ifdef WIN32 |
19 | thread->thr = GetCurrentThreadId(); |
20 | #else |
21 | thread->thr = pthread_self(); |
22 | #endif |
23 | |
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24 | SHAREDSvLOCK(threads); |
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25 | SHAREDSvEDIT(threads); |
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26 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread->thr)); |
27 | thread_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread)); |
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28 | hv_store_ent((HV*)SHAREDSvGET(threads), thread_tid_ptr, thread_ptr,0); |
29 | SvREFCNT_dec(thread_tid_ptr); |
30 | SHAREDSvRELEASE(threads); |
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31 | SHAREDSvUNLOCK(threads); |
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32 | PL_perl_destruct_level = 2; |
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33 | |
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34 | { |
35 | |
36 | AV* params; |
37 | I32 len; |
38 | int i; |
39 | dSP; |
40 | params = (AV*) SvRV(thread->params); |
41 | len = av_len(params); |
42 | ENTER; |
43 | SAVETMPS; |
44 | PUSHMARK(SP); |
45 | if(len > -1) { |
46 | for(i = 0; i < len + 1; i++) { |
47 | XPUSHs(av_shift(params)); |
48 | } |
49 | } |
50 | PUTBACK; |
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51 | call_sv(thread->init_function, G_DISCARD); |
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52 | FREETMPS; |
53 | LEAVE; |
54 | |
55 | |
56 | } |
57 | |
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58 | MUTEX_LOCK(&thread->mutex); |
59 | perl_destruct(thread->interp); |
60 | perl_free(thread->interp); |
61 | if(thread->detached == 1) { |
62 | MUTEX_UNLOCK(&thread->mutex); |
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63 | Perl_thread_destruct(thread); |
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64 | } else { |
65 | MUTEX_UNLOCK(&thread->mutex); |
66 | } |
67 | #ifdef WIN32 |
68 | return (DWORD)0; |
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69 | #else |
70 | return 0; |
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71 | #endif |
72 | |
73 | } |
74 | |
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75 | /* |
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76 | * iThread->create(); |
77 | */ |
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78 | |
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79 | SV* Perl_thread_create(char* class, SV* init_function, SV* params) { |
47ba8780 |
80 | ithread* thread = malloc(sizeof(ithread)); |
81 | SV* obj_ref; |
82 | SV* obj; |
83 | SV* temp_store; |
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84 | PerlInterpreter *current_perl; |
85 | |
86 | MUTEX_LOCK(&create_mutex); |
87 | obj_ref = newSViv(0); |
88 | obj = newSVrv(obj_ref, class); |
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89 | sv_setiv(obj, (IV)thread); |
90 | SvREADONLY_on(obj); |
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91 | |
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92 | current_perl = PERL_GET_CONTEXT; |
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93 | |
94 | /* |
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95 | * here we put the values of params and function to call onto |
96 | * namespace, this is so perl will properly clone them when we |
97 | * call perl_clone. |
98 | */ |
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99 | |
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100 | temp_store = Perl_get_sv(current_perl, "threads::paramtempstore", |
101 | TRUE | GV_ADDMULTI); |
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102 | Perl_sv_setsv(current_perl, temp_store,params); |
103 | params = NULL; |
104 | temp_store = NULL; |
105 | |
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106 | temp_store = Perl_get_sv(current_perl, "threads::calltempstore", |
107 | TRUE | GV_ADDMULTI); |
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108 | Perl_sv_setsv(current_perl,temp_store, init_function); |
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109 | init_function = NULL; |
110 | temp_store = NULL; |
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111 | |
112 | #ifdef WIN32 |
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113 | thread->interp = perl_clone(current_perl, 4); |
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114 | #else |
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115 | thread->interp = perl_clone(current_perl, 0); |
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116 | #endif |
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117 | |
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118 | thread->init_function = newSVsv(Perl_get_sv(thread->interp, |
119 | "threads::calltempstore",FALSE)); |
120 | thread->params = newSVsv(Perl_get_sv(thread->interp, |
121 | "threads::paramtempstore",FALSE)); |
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122 | |
123 | /* |
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124 | * And here we make sure we clean up the data we put in the |
125 | * namespace of iThread, both in the new and the calling |
126 | * inteprreter */ |
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127 | |
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128 | temp_store = Perl_get_sv(thread->interp, "threads::paramtempstore",FALSE); |
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129 | Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef); |
130 | |
131 | temp_store = Perl_get_sv(thread->interp,"threads::calltempstore",FALSE); |
132 | Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef); |
133 | |
134 | PERL_SET_CONTEXT(current_perl); |
135 | |
136 | temp_store = Perl_get_sv(current_perl,"threads::paramtempstore",FALSE); |
137 | Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef); |
138 | |
139 | temp_store = Perl_get_sv(current_perl,"threads::calltempstore",FALSE); |
140 | Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef); |
141 | |
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142 | /* let's init the thread */ |
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143 | |
144 | MUTEX_INIT(&thread->mutex); |
145 | thread->tid = tid_counter++; |
146 | thread->detached = 0; |
147 | thread->count = 1; |
148 | |
149 | #ifdef WIN32 |
150 | |
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151 | thread->handle = CreateThread(NULL, 0, Perl_thread_run, |
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152 | (LPVOID)thread, 0, &thread->thr); |
153 | |
154 | #else |
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155 | pthread_create( &thread->thr, (pthread_attr_t*)NULL, Perl_thread_run, thread); |
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156 | #endif |
157 | MUTEX_UNLOCK(&create_mutex); |
158 | |
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159 | return obj_ref; |
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160 | } |
161 | |
162 | /* |
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163 | * returns the id of the thread |
164 | */ |
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165 | I32 Perl_thread_tid (SV* obj) { |
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166 | ithread* thread; |
167 | if(!SvROK(obj)) { |
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168 | obj = Perl_thread_self(SvPV_nolen(obj)); |
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169 | thread = (ithread*)SvIV(SvRV(obj)); |
170 | SvREFCNT_dec(obj); |
171 | } else { |
172 | thread = (ithread*)SvIV(SvRV(obj)); |
173 | } |
174 | return thread->tid; |
175 | } |
176 | |
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177 | SV* Perl_thread_self (char* class) { |
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178 | dTHX; |
179 | SV* obj_ref; |
180 | SV* obj; |
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181 | SV* thread_tid_ptr; |
182 | SV* thread_ptr; |
183 | HE* thread_entry; |
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184 | |
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185 | SHAREDSvLOCK(threads); |
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186 | SHAREDSvEDIT(threads); |
187 | #ifdef WIN32 |
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188 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, |
189 | (UV) GetCurrentThreadId()); |
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190 | #else |
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191 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, |
192 | PTR2UV(pthread_self())); |
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193 | #endif |
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194 | thread_entry = Perl_hv_fetch_ent(PL_sharedsv_space, |
195 | (HV*) SHAREDSvGET(threads), |
196 | thread_tid_ptr, 0,0); |
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197 | thread_ptr = HeVAL(thread_entry); |
198 | SvREFCNT_dec(thread_tid_ptr); |
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199 | SHAREDSvRELEASE(threads); |
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200 | SHAREDSvUNLOCK(threads); |
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201 | |
202 | obj_ref = newSViv(0); |
203 | obj = newSVrv(obj_ref, class); |
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204 | sv_setsv(obj, thread_ptr); |
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205 | SvREADONLY_on(obj); |
206 | return obj_ref; |
207 | } |
208 | |
209 | /* |
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210 | * joins the thread this code needs to take the returnvalue from the |
211 | * call_sv and send it back */ |
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212 | |
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213 | void Perl_thread_join(SV* obj) { |
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214 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
215 | #ifdef WIN32 |
216 | DWORD waitcode; |
217 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
218 | #else |
219 | void *retval; |
220 | pthread_join(thread->thr,&retval); |
221 | #endif |
222 | } |
223 | |
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224 | /* detaches a thread |
225 | * needs to better clean up memory */ |
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226 | |
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227 | void Perl_thread_detach(SV* obj) { |
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228 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
229 | MUTEX_LOCK(&thread->mutex); |
230 | thread->detached = 1; |
231 | #if !defined(WIN32) |
232 | pthread_detach(thread->thr); |
233 | #endif |
234 | MUTEX_UNLOCK(&thread->mutex); |
235 | } |
236 | |
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237 | void Perl_thread_DESTROY (SV* obj) { |
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238 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
239 | |
240 | MUTEX_LOCK(&thread->mutex); |
241 | thread->count--; |
242 | MUTEX_UNLOCK(&thread->mutex); |
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243 | Perl_thread_destruct(thread); |
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244 | } |
245 | |
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246 | void Perl_thread_destruct (ithread* thread) { |
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247 | return; |
248 | MUTEX_LOCK(&thread->mutex); |
249 | if(thread->count != 0) { |
250 | MUTEX_UNLOCK(&thread->mutex); |
251 | return; |
252 | } |
253 | MUTEX_UNLOCK(&thread->mutex); |
254 | /* it is safe noone is holding a ref to this */ |
255 | /*printf("proper destruction!\n");*/ |
256 | } |
257 | |
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258 | MODULE = threads PACKAGE = threads |
259 | BOOT: |
260 | Perl_sharedsv_init(aTHX); |
261 | PL_perl_destruct_level = 2; |
262 | threads = Perl_sharedsv_new(aTHX); |
263 | SHAREDSvEDIT(threads); |
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264 | SHAREDSvGET(threads) = (SV *)newHV(); |
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265 | SHAREDSvRELEASE(threads); |
266 | { |
267 | |
268 | |
269 | SV* temp = get_sv("threads::sharedsv_space", TRUE | GV_ADDMULTI); |
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270 | SV* temp2 = newSViv((IV)PL_sharedsv_space ); |
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271 | sv_setsv( temp , temp2 ); |
272 | } |
273 | { |
274 | ithread* thread = malloc(sizeof(ithread)); |
275 | SV* thread_tid_ptr; |
276 | SV* thread_ptr; |
277 | MUTEX_INIT(&thread->mutex); |
278 | thread->tid = 0; |
279 | #ifdef WIN32 |
280 | thread->thr = GetCurrentThreadId(); |
281 | #else |
282 | thread->thr = pthread_self(); |
283 | #endif |
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284 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread->thr)); |
285 | thread_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread)); |
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286 | SHAREDSvEDIT(threads); |
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287 | hv_store_ent((HV*) SHAREDSvGET(threads), thread_tid_ptr, thread_ptr,0); |
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288 | SHAREDSvRELEASE(threads); |
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289 | SvREFCNT_dec(thread_tid_ptr); |
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290 | } |
291 | MUTEX_INIT(&create_mutex); |
292 | |
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293 | PROTOTYPES: DISABLE |
294 | |
295 | SV * |
296 | create (class, function_to_call, ...) |
297 | char * class |
298 | SV * function_to_call |
299 | CODE: |
300 | AV* params = newAV(); |
301 | if(items > 2) { |
302 | int i; |
303 | for(i = 2; i < items ; i++) { |
304 | av_push(params, ST(i)); |
305 | } |
306 | } |
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307 | RETVAL = Perl_thread_create(class, function_to_call, newRV_noinc((SV*) params)); |
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308 | OUTPUT: |
309 | RETVAL |
310 | |
311 | SV * |
312 | self (class) |
313 | char* class |
314 | CODE: |
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315 | RETVAL = Perl_thread_self(class); |
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316 | OUTPUT: |
317 | RETVAL |
318 | |
319 | int |
320 | tid (obj) |
321 | SV * obj; |
322 | CODE: |
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323 | RETVAL = Perl_thread_tid(obj); |
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324 | OUTPUT: |
325 | RETVAL |
326 | |
327 | void |
328 | join (obj) |
329 | SV * obj |
330 | PREINIT: |
331 | I32* temp; |
332 | PPCODE: |
333 | temp = PL_markstack_ptr++; |
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334 | Perl_thread_join(obj); |
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335 | if (PL_markstack_ptr != temp) { |
336 | /* truly void, because dXSARGS not invoked */ |
337 | PL_markstack_ptr = temp; |
338 | XSRETURN_EMPTY; /* return empty stack */ |
339 | } |
340 | /* must have used dXSARGS; list context implied */ |
341 | return; /* assume stack size is correct */ |
342 | |
343 | void |
344 | detach (obj) |
345 | SV * obj |
346 | PREINIT: |
347 | I32* temp; |
348 | PPCODE: |
349 | temp = PL_markstack_ptr++; |
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350 | Perl_thread_detach(obj); |
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351 | if (PL_markstack_ptr != temp) { |
352 | /* truly void, because dXSARGS not invoked */ |
353 | PL_markstack_ptr = temp; |
354 | XSRETURN_EMPTY; /* return empty stack */ |
355 | } |
356 | /* must have used dXSARGS; list context implied */ |
357 | return; /* assume stack size is correct */ |
358 | |
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359 | void |
360 | DESTROY (obj) |
361 | SV * obj |
362 | PREINIT: |
363 | I32* temp; |
364 | PPCODE: |
365 | temp = PL_markstack_ptr++; |
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366 | Perl_thread_DESTROY(obj); |
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367 | if (PL_markstack_ptr != temp) { |
368 | /* truly void, because dXSARGS not invoked */ |
369 | PL_markstack_ptr = temp; |
370 | XSRETURN_EMPTY; /* return empty stack */ |
371 | } |
372 | /* must have used dXSARGS; list context implied */ |
373 | return; /* assume stack size is correct */ |
374 | |