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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); |
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59 | PerlIO_flush((PerlIO*)NULL); |
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60 | perl_destruct(thread->interp); |
61 | perl_free(thread->interp); |
62 | if(thread->detached == 1) { |
63 | MUTEX_UNLOCK(&thread->mutex); |
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64 | Perl_thread_destruct(thread); |
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65 | } else { |
66 | MUTEX_UNLOCK(&thread->mutex); |
67 | } |
68 | #ifdef WIN32 |
69 | return (DWORD)0; |
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70 | #else |
71 | return 0; |
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72 | #endif |
73 | |
74 | } |
75 | |
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76 | /* |
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77 | * iThread->create(); |
78 | */ |
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79 | |
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80 | SV* Perl_thread_create(char* class, SV* init_function, SV* params) { |
47ba8780 |
81 | ithread* thread = malloc(sizeof(ithread)); |
82 | SV* obj_ref; |
83 | SV* obj; |
84 | SV* temp_store; |
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85 | PerlInterpreter *current_perl; |
86 | |
87 | MUTEX_LOCK(&create_mutex); |
88 | obj_ref = newSViv(0); |
89 | obj = newSVrv(obj_ref, class); |
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90 | sv_setiv(obj, (IV)thread); |
91 | SvREADONLY_on(obj); |
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92 | |
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93 | current_perl = PERL_GET_CONTEXT; |
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94 | |
95 | /* |
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96 | * here we put the values of params and function to call onto |
97 | * namespace, this is so perl will properly clone them when we |
98 | * call perl_clone. |
99 | */ |
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100 | |
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101 | temp_store = Perl_get_sv(current_perl, "threads::paramtempstore", |
102 | TRUE | GV_ADDMULTI); |
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103 | Perl_sv_setsv(current_perl, temp_store,params); |
104 | params = NULL; |
105 | temp_store = NULL; |
106 | |
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107 | temp_store = Perl_get_sv(current_perl, "threads::calltempstore", |
108 | TRUE | GV_ADDMULTI); |
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109 | Perl_sv_setsv(current_perl,temp_store, init_function); |
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110 | init_function = NULL; |
111 | temp_store = NULL; |
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112 | |
113 | #ifdef WIN32 |
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114 | thread->interp = perl_clone(current_perl, 4); |
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115 | #else |
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116 | thread->interp = perl_clone(current_perl, 0); |
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117 | #endif |
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118 | |
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119 | thread->init_function = newSVsv(Perl_get_sv(thread->interp, |
120 | "threads::calltempstore",FALSE)); |
121 | thread->params = newSVsv(Perl_get_sv(thread->interp, |
122 | "threads::paramtempstore",FALSE)); |
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123 | |
124 | /* |
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125 | * And here we make sure we clean up the data we put in the |
126 | * namespace of iThread, both in the new and the calling |
127 | * inteprreter */ |
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128 | |
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129 | temp_store = Perl_get_sv(thread->interp, "threads::paramtempstore",FALSE); |
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130 | Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef); |
131 | |
132 | temp_store = Perl_get_sv(thread->interp,"threads::calltempstore",FALSE); |
133 | Perl_sv_setsv(thread->interp,temp_store, &PL_sv_undef); |
134 | |
135 | PERL_SET_CONTEXT(current_perl); |
136 | |
137 | temp_store = Perl_get_sv(current_perl,"threads::paramtempstore",FALSE); |
138 | Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef); |
139 | |
140 | temp_store = Perl_get_sv(current_perl,"threads::calltempstore",FALSE); |
141 | Perl_sv_setsv(current_perl, temp_store, &PL_sv_undef); |
142 | |
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143 | /* let's init the thread */ |
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144 | |
145 | MUTEX_INIT(&thread->mutex); |
146 | thread->tid = tid_counter++; |
147 | thread->detached = 0; |
148 | thread->count = 1; |
149 | |
150 | #ifdef WIN32 |
151 | |
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152 | thread->handle = CreateThread(NULL, 0, Perl_thread_run, |
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153 | (LPVOID)thread, 0, &thread->thr); |
154 | |
155 | #else |
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156 | pthread_create( &thread->thr, (pthread_attr_t*)NULL, Perl_thread_run, thread); |
47ba8780 |
157 | #endif |
158 | MUTEX_UNLOCK(&create_mutex); |
159 | |
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160 | return obj_ref; |
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161 | } |
162 | |
163 | /* |
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164 | * returns the id of the thread |
165 | */ |
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166 | I32 Perl_thread_tid (SV* obj) { |
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167 | ithread* thread; |
168 | if(!SvROK(obj)) { |
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169 | obj = Perl_thread_self(SvPV_nolen(obj)); |
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170 | thread = (ithread*)SvIV(SvRV(obj)); |
171 | SvREFCNT_dec(obj); |
172 | } else { |
173 | thread = (ithread*)SvIV(SvRV(obj)); |
174 | } |
175 | return thread->tid; |
176 | } |
177 | |
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178 | SV* Perl_thread_self (char* class) { |
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179 | dTHX; |
180 | SV* obj_ref; |
181 | SV* obj; |
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182 | SV* thread_tid_ptr; |
183 | SV* thread_ptr; |
184 | HE* thread_entry; |
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185 | |
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186 | SHAREDSvLOCK(threads); |
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187 | SHAREDSvEDIT(threads); |
188 | #ifdef WIN32 |
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189 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, |
190 | (UV) GetCurrentThreadId()); |
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191 | #else |
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192 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, |
193 | PTR2UV(pthread_self())); |
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194 | #endif |
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195 | thread_entry = Perl_hv_fetch_ent(PL_sharedsv_space, |
196 | (HV*) SHAREDSvGET(threads), |
197 | thread_tid_ptr, 0,0); |
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198 | thread_ptr = HeVAL(thread_entry); |
199 | SvREFCNT_dec(thread_tid_ptr); |
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200 | SHAREDSvRELEASE(threads); |
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201 | SHAREDSvUNLOCK(threads); |
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202 | |
203 | obj_ref = newSViv(0); |
204 | obj = newSVrv(obj_ref, class); |
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205 | sv_setsv(obj, thread_ptr); |
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206 | SvREADONLY_on(obj); |
207 | return obj_ref; |
208 | } |
209 | |
210 | /* |
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211 | * joins the thread this code needs to take the returnvalue from the |
212 | * call_sv and send it back */ |
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213 | |
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214 | void Perl_thread_join(SV* obj) { |
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215 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
216 | #ifdef WIN32 |
217 | DWORD waitcode; |
218 | waitcode = WaitForSingleObject(thread->handle, INFINITE); |
219 | #else |
220 | void *retval; |
221 | pthread_join(thread->thr,&retval); |
222 | #endif |
223 | } |
224 | |
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225 | /* detaches a thread |
226 | * needs to better clean up memory */ |
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227 | |
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228 | void Perl_thread_detach(SV* obj) { |
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229 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
230 | MUTEX_LOCK(&thread->mutex); |
231 | thread->detached = 1; |
232 | #if !defined(WIN32) |
233 | pthread_detach(thread->thr); |
234 | #endif |
235 | MUTEX_UNLOCK(&thread->mutex); |
236 | } |
237 | |
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238 | void Perl_thread_DESTROY (SV* obj) { |
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239 | ithread* thread = (ithread*)SvIV(SvRV(obj)); |
240 | |
241 | MUTEX_LOCK(&thread->mutex); |
242 | thread->count--; |
243 | MUTEX_UNLOCK(&thread->mutex); |
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244 | Perl_thread_destruct(thread); |
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245 | } |
246 | |
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247 | void Perl_thread_destruct (ithread* thread) { |
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248 | return; |
249 | MUTEX_LOCK(&thread->mutex); |
250 | if(thread->count != 0) { |
251 | MUTEX_UNLOCK(&thread->mutex); |
252 | return; |
253 | } |
254 | MUTEX_UNLOCK(&thread->mutex); |
255 | /* it is safe noone is holding a ref to this */ |
256 | /*printf("proper destruction!\n");*/ |
257 | } |
258 | |
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259 | MODULE = threads PACKAGE = threads |
260 | BOOT: |
261 | Perl_sharedsv_init(aTHX); |
262 | PL_perl_destruct_level = 2; |
263 | threads = Perl_sharedsv_new(aTHX); |
264 | SHAREDSvEDIT(threads); |
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265 | SHAREDSvGET(threads) = (SV *)newHV(); |
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266 | SHAREDSvRELEASE(threads); |
267 | { |
268 | |
269 | |
270 | SV* temp = get_sv("threads::sharedsv_space", TRUE | GV_ADDMULTI); |
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271 | SV* temp2 = newSViv((IV)PL_sharedsv_space ); |
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272 | sv_setsv( temp , temp2 ); |
273 | } |
274 | { |
275 | ithread* thread = malloc(sizeof(ithread)); |
276 | SV* thread_tid_ptr; |
277 | SV* thread_ptr; |
278 | MUTEX_INIT(&thread->mutex); |
279 | thread->tid = 0; |
280 | #ifdef WIN32 |
281 | thread->thr = GetCurrentThreadId(); |
282 | #else |
283 | thread->thr = pthread_self(); |
284 | #endif |
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285 | SHAREDSvEDIT(threads); |
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286 | thread_tid_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread->thr)); |
287 | thread_ptr = Perl_newSVuv(PL_sharedsv_space, PTR2UV(thread)); |
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288 | hv_store_ent((HV*) SHAREDSvGET(threads), thread_tid_ptr, thread_ptr,0); |
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289 | SvREFCNT_dec(thread_tid_ptr); |
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290 | SHAREDSvRELEASE(threads); |
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291 | } |
292 | MUTEX_INIT(&create_mutex); |
293 | |
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294 | PROTOTYPES: DISABLE |
295 | |
296 | SV * |
297 | create (class, function_to_call, ...) |
298 | char * class |
299 | SV * function_to_call |
300 | CODE: |
301 | AV* params = newAV(); |
302 | if(items > 2) { |
303 | int i; |
304 | for(i = 2; i < items ; i++) { |
305 | av_push(params, ST(i)); |
306 | } |
307 | } |
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308 | RETVAL = Perl_thread_create(class, function_to_call, newRV_noinc((SV*) params)); |
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309 | OUTPUT: |
310 | RETVAL |
311 | |
312 | SV * |
313 | self (class) |
314 | char* class |
315 | CODE: |
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316 | RETVAL = Perl_thread_self(class); |
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317 | OUTPUT: |
318 | RETVAL |
319 | |
320 | int |
321 | tid (obj) |
322 | SV * obj; |
323 | CODE: |
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324 | RETVAL = Perl_thread_tid(obj); |
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325 | OUTPUT: |
326 | RETVAL |
327 | |
328 | void |
329 | join (obj) |
330 | SV * obj |
331 | PREINIT: |
332 | I32* temp; |
333 | PPCODE: |
334 | temp = PL_markstack_ptr++; |
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335 | Perl_thread_join(obj); |
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336 | if (PL_markstack_ptr != temp) { |
337 | /* truly void, because dXSARGS not invoked */ |
338 | PL_markstack_ptr = temp; |
339 | XSRETURN_EMPTY; /* return empty stack */ |
340 | } |
341 | /* must have used dXSARGS; list context implied */ |
342 | return; /* assume stack size is correct */ |
343 | |
344 | void |
345 | detach (obj) |
346 | SV * obj |
347 | PREINIT: |
348 | I32* temp; |
349 | PPCODE: |
350 | temp = PL_markstack_ptr++; |
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351 | Perl_thread_detach(obj); |
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352 | if (PL_markstack_ptr != temp) { |
353 | /* truly void, because dXSARGS not invoked */ |
354 | PL_markstack_ptr = temp; |
355 | XSRETURN_EMPTY; /* return empty stack */ |
356 | } |
357 | /* must have used dXSARGS; list context implied */ |
358 | return; /* assume stack size is correct */ |
359 | |
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360 | void |
361 | DESTROY (obj) |
362 | SV * obj |
363 | PREINIT: |
364 | I32* temp; |
365 | PPCODE: |
366 | temp = PL_markstack_ptr++; |
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367 | Perl_thread_DESTROY(obj); |
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368 | if (PL_markstack_ptr != temp) { |
369 | /* truly void, because dXSARGS not invoked */ |
370 | PL_markstack_ptr = temp; |
371 | XSRETURN_EMPTY; /* return empty stack */ |
372 | } |
373 | /* must have used dXSARGS; list context implied */ |
374 | return; /* assume stack size is correct */ |
375 | |