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runtime: Block signals when creating a new thread. 

From-SVN: r195619
This commit is contained in:
Ian Lance Taylor 2013-01-31 17:30:28 +00:00
parent 3b35cd045f
commit e259a3f2ca
1 changed files with 13 additions and 1 deletions
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14
libgo/runtime/proc.c
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@ -3,6 +3,7 @@
// license that can be found in the LICENSE file. // license that can be found in the LICENSE file.
#include <limits.h> #include <limits.h>
#include <signal.h>
#include <stdlib.h> #include <stdlib.h>
#include <pthread.h> #include <pthread.h>
#include <unistd.h> #include <unistd.h>
@ -1217,6 +1218,9 @@ runtime_newm(void)
pthread_attr_t attr; pthread_attr_t attr;
pthread_t tid; pthread_t tid;
size_t stacksize; size_t stacksize;
sigset_t clear;
sigset_t old;
int ret;
#if 0 #if 0
static const Type *mtype; // The Go type M static const Type *mtype; // The Go type M
@ -1249,7 +1253,15 @@ runtime_newm(void)
if(pthread_attr_setstacksize(&attr, stacksize) != 0) if(pthread_attr_setstacksize(&attr, stacksize) != 0)
runtime_throw("pthread_attr_setstacksize"); runtime_throw("pthread_attr_setstacksize");
if(pthread_create(&tid, &attr, runtime_mstart, mp) != 0) // Block signals during pthread_create so that the new thread
// starts with signals disabled. It will enable them in minit.
sigfillset(&clear);
sigemptyset(&old);
sigprocmask(SIG_BLOCK, &clear, &old);
ret = pthread_create(&tid, &attr, runtime_mstart, mp);
sigprocmask(SIG_SETMASK, &old, nil);
if (ret != 0)
runtime_throw("pthread_create"); runtime_throw("pthread_create");
return mp; return mp;