128 lines
3.0 KiB
C++
128 lines
3.0 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <errno.h>
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#include <signal.h>
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template <typename Fn>
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static void TestSigSet1(Fn fn) {
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// NULL sigset_t*.
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sigset_t* set_ptr = NULL;
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errno = 0;
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ASSERT_EQ(-1, fn(set_ptr));
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ASSERT_EQ(EINVAL, errno);
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// Non-NULL.
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sigset_t set;
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errno = 0;
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ASSERT_EQ(0, fn(&set));
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ASSERT_EQ(0, errno);
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}
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template <typename Fn>
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static void TestSigSet2(Fn fn) {
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// NULL sigset_t*.
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sigset_t* set_ptr = NULL;
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errno = 0;
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ASSERT_EQ(-1, fn(set_ptr, SIGSEGV));
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ASSERT_EQ(EINVAL, errno);
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sigset_t set;
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sigemptyset(&set);
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int min_signal = SIGHUP;
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int max_signal = SIGRTMAX;
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#if defined(__BIONIC__) && !defined(__mips__)
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// bionic's sigset_t is too small for ARM and x86: 32 bits instead of 64.
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// This means you can't refer to any of the real-time signals.
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// See http://b/3038348 and http://b/5828899.
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max_signal = 32;
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#else
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// Other C libraries (or bionic for MIPS) are perfectly capable of using their largest signal.
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ASSERT_GE(sizeof(sigset_t) * 8, static_cast<size_t>(SIGRTMAX));
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#endif
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// Bad signal number: too small.
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errno = 0;
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ASSERT_EQ(-1, fn(&set, 0));
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ASSERT_EQ(EINVAL, errno);
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// Bad signal number: too high.
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errno = 0;
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ASSERT_EQ(-1, fn(&set, max_signal + 1));
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ASSERT_EQ(EINVAL, errno);
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// Good signal numbers, low and high ends of range.
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errno = 0;
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ASSERT_EQ(0, fn(&set, min_signal));
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ASSERT_EQ(0, errno);
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ASSERT_EQ(0, fn(&set, max_signal));
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ASSERT_EQ(0, errno);
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}
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TEST(signal, sigismember_invalid) {
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TestSigSet2(sigismember);
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}
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TEST(signal, sigaddset_invalid) {
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TestSigSet2(sigaddset);
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}
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TEST(signal, sigdelset_invalid) {
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TestSigSet2(sigdelset);
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}
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TEST(signal, sigemptyset_invalid) {
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TestSigSet1(sigemptyset);
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}
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TEST(signal, sigfillset_invalid) {
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TestSigSet1(sigfillset);
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}
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TEST(signal, raise_invalid) {
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errno = 0;
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ASSERT_EQ(-1, raise(-1));
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ASSERT_EQ(EINVAL, errno);
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}
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static void HandleSIGALRM(int signal_number) {
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ASSERT_EQ(SIGALRM, signal_number);
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}
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TEST(signal, sigwait) {
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struct sigaction action;
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sigemptyset(&action.sa_mask);
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action.sa_flags = 0;
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action.sa_handler = HandleSIGALRM;
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sigaction(SIGALRM, &action, NULL);
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sigset_t wait_set;
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sigemptyset(&wait_set);
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sigaddset(&wait_set, SIGALRM);
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alarm(1);
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int received_signal;
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errno = 0;
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ASSERT_EQ(0, sigwait(&wait_set, &received_signal));
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ASSERT_EQ(0, errno);
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ASSERT_EQ(SIGALRM, received_signal);
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}
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