1 // Copyright 2009 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 #include <sys/types.h> 6 #include <pthread.h> 7 #include <signal.h> 8 #include <string.h> 9 #include "libcgo.h" 10 11 static void* threadentry(void*); 12 static void (*setg_gcc)(void*); 13 14 void 15 x_cgo_init(G *g, void (*setg)(void*)) 16 { 17 pthread_attr_t attr; 18 size_t size; 19 20 setg_gcc = setg; 21 pthread_attr_init(&attr); 22 pthread_attr_getstacksize(&attr, &size); 23 g->stacklo = (uintptr)&attr - size + 4096; 24 pthread_attr_destroy(&attr); 25 } 26 27 28 void 29 _cgo_sys_thread_start(ThreadStart *ts) 30 { 31 pthread_attr_t attr; 32 sigset_t ign, oset; 33 pthread_t p; 34 size_t size; 35 int err; 36 37 sigfillset(&ign); 38 pthread_sigmask(SIG_SETMASK, &ign, &oset); 39 40 pthread_attr_init(&attr); 41 pthread_attr_getstacksize(&attr, &size); 42 // Leave stacklo=0 and set stackhi=size; mstack will do the rest. 43 ts->g->stackhi = size; 44 err = pthread_create(&p, &attr, threadentry, ts); 45 46 pthread_sigmask(SIG_SETMASK, &oset, nil); 47 48 if (err != 0) { 49 fprintf(stderr, "runtime/cgo: pthread_create failed: %s\n", strerror(err)); 50 abort(); 51 } 52 } 53 54 static void* 55 threadentry(void *v) 56 { 57 ThreadStart ts; 58 59 ts = *(ThreadStart*)v; 60 free(v); 61 62 /* 63 * Set specific keys. 64 */ 65 setg_gcc((void*)ts.g); 66 67 crosscall_386(ts.fn); 68 return nil; 69 } 70
