platform_bionic/libc/bionic/pthread_sigqueue.cpp
Josh Gao 726b63f725 Implement pthread_sigqueue.
Bug: http://b/112770187
Test: bionic-unit-tests
Change-Id: I03382cd5df2490b2e87265dba9007e2cb1b14cd2
2018-08-27 16:48:17 -07:00

51 lines
1.9 KiB
C++

/*
* Copyright (C) 2018 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 <pthread.h>
#include <signal.h>
#include <sys/syscall.h>
#include <unistd.h>
#include "private/ErrnoRestorer.h"
#include "pthread_internal.h"
int pthread_sigqueue(pthread_t t, int sig, const union sigval value) {
ErrnoRestorer errno_restorer;
pid_t tid = pthread_gettid_np(t);
if (tid == -1) return ESRCH;
siginfo_t siginfo;
siginfo.si_code = SI_QUEUE;
siginfo.si_pid = getpid();
siginfo.si_uid = getuid();
siginfo.si_value = value;
return syscall(__NR_rt_tgsigqueueinfo, getpid(), tid, sig, &siginfo) ? errno : 0;
}