mirror of
https://github.com/golang/go
synced 2024-11-26 17:26:56 -07:00
f03ee913e2
This is the same retry loop we use in _cgo_try_pthread_create in runtime/cgo. Fixes #25078 Change-Id: I7ef4d4fc7fb89cbfb674c4f93cbdd7a033dd8983 Reviewed-on: https://go-review.googlesource.com/121096 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
52 lines
1.0 KiB
C
52 lines
1.0 KiB
C
// Copyright 2015 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build !windows
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
extern void IntoGoAndBack();
|
|
|
|
int CheckBlocked() {
|
|
sigset_t mask;
|
|
sigprocmask(SIG_BLOCK, NULL, &mask);
|
|
return sigismember(&mask, SIGIO);
|
|
}
|
|
|
|
static void* sigthreadfunc(void* unused) {
|
|
sigset_t mask;
|
|
sigemptyset(&mask);
|
|
sigaddset(&mask, SIGIO);
|
|
sigprocmask(SIG_BLOCK, &mask, NULL);
|
|
IntoGoAndBack();
|
|
return NULL;
|
|
}
|
|
|
|
int RunSigThread() {
|
|
int tries;
|
|
pthread_t thread;
|
|
int r;
|
|
struct timespec ts;
|
|
|
|
for (tries = 0; tries < 20; tries++) {
|
|
r = pthread_create(&thread, NULL, &sigthreadfunc, NULL);
|
|
if (r == 0) {
|
|
return pthread_join(thread, NULL);
|
|
}
|
|
if (r != EAGAIN) {
|
|
return r;
|
|
}
|
|
ts.tv_sec = 0;
|
|
ts.tv_nsec = (tries + 1) * 1000 * 1000; // Milliseconds.
|
|
nanosleep(&ts, NULL);
|
|
}
|
|
return EAGAIN;
|
|
}
|