53 lines
2 KiB
C++
53 lines
2 KiB
C++
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
|
|
#include "private/kernel_sigset_t.h"
|
|
|
|
extern "C" int __rt_sigtimedwait(const sigset_t* uthese, siginfo_t* uinfo, const struct timespec* uts, size_t sigsetsize);
|
|
|
|
int sigwait(const sigset_t* set, int* sig) {
|
|
kernel_sigset_t sigset(set);
|
|
while (true) {
|
|
// __rt_sigtimedwait can return EAGAIN or EINTR, we need to loop
|
|
// around them since sigwait is only allowed to return EINVAL.
|
|
int result = __rt_sigtimedwait(sigset.get(), NULL, NULL, sizeof(sigset));
|
|
if (result >= 0) {
|
|
*sig = result;
|
|
return 0;
|
|
}
|
|
|
|
if (errno != EAGAIN && errno != EINTR) {
|
|
return errno;
|
|
}
|
|
}
|
|
}
|