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153 | // Copyright (C) 2012-2015,2017 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <log/interprocess/interprocess_sync_file.h>
#include <util/unittests/check_valgrind.h>
#include <util/unittests/interprocess_util.h>
#include <gtest/gtest.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <unistd.h><--- Include file: not found. Please note: Cppcheck does not need standard library headers to get proper results.
using namespace std;
using namespace isc::log::interprocess;
using isc::util::unittests::parentReadState;
namespace {
TEST(InterprocessSyncFileTest, BadFile) {
InterprocessSyncFile sync("/no-such--dir/or--file");
InterprocessSyncLocker locker(sync);
EXPECT_FALSE(locker.isLocked());
ASSERT_THROW(locker.lock(), InterprocessSyncFileError);
}
TEST(InterprocessSyncFileTest, TestLock) {<--- syntax error
InterprocessSyncFile sync("test");
InterprocessSyncLocker locker(sync);
EXPECT_FALSE(locker.isLocked());
EXPECT_TRUE(locker.lock());
EXPECT_TRUE(locker.isLocked());
if (!isc::util::unittests::runningOnValgrind()) {
int fds[2];
// Here, we check that a lock has been taken by forking and
// checking from the child that a lock exists. This has to be
// done from a separate process as we test by trying to lock the
// range again on the lock file. The lock attempt would pass if
// done from the same process for the granted range. The lock
// attempt must fail to pass our check.
EXPECT_EQ(0, pipe(fds));
if (fork() == 0) {
unsigned char locked = 0;
// Child writes to pipe
close(fds[0]);
InterprocessSyncFile sync2("test");
InterprocessSyncLocker locker2(sync2);
if (!locker2.tryLock()) {
EXPECT_FALSE(locker2.isLocked());
locked = 1;
} else {
EXPECT_TRUE(locker2.isLocked());
}
ssize_t bytes_written = write(fds[1], &locked, sizeof(locked));
EXPECT_EQ(sizeof(locked), bytes_written);
close(fds[1]);
exit(0);
} else {
// Parent reads from pipe
close(fds[1]);
const unsigned char locked = parentReadState(fds[0]);
close(fds[0]);
EXPECT_EQ(1, locked);
}
}
EXPECT_TRUE(locker.unlock());
EXPECT_FALSE(locker.isLocked());
EXPECT_EQ (0, remove(TEST_DATA_TOPBUILDDIR "/test_lockfile"));
}
TEST(InterprocessSyncFileTest, TestMultipleFilesDirect) {
InterprocessSyncFile sync("test1");
InterprocessSyncLocker locker(sync);
EXPECT_TRUE(locker.lock());
InterprocessSyncFile sync2("test2");
InterprocessSyncLocker locker2(sync2);
EXPECT_TRUE(locker2.lock());
EXPECT_TRUE(locker2.unlock());
EXPECT_TRUE(locker.unlock());
EXPECT_EQ (0, remove(TEST_DATA_TOPBUILDDIR "/test1_lockfile"));
EXPECT_EQ (0, remove(TEST_DATA_TOPBUILDDIR "/test2_lockfile"));
}
TEST(InterprocessSyncFileTest, TestMultipleFilesForked) {
InterprocessSyncFile sync("test1");
InterprocessSyncLocker locker(sync);
EXPECT_TRUE(locker.lock());
if (!isc::util::unittests::runningOnValgrind()) {
int fds[2];
EXPECT_EQ(0, pipe(fds));
if (fork() == 0) {
unsigned char locked = 0xff;
// Child writes to pipe
close(fds[0]);
InterprocessSyncFile sync2("test2");
InterprocessSyncLocker locker2(sync2);
if (locker2.tryLock()) {
locked = 0;
}
ssize_t bytes_written = write(fds[1], &locked, sizeof(locked));
EXPECT_EQ(sizeof(locked), bytes_written);
close(fds[1]);
exit(0);
} else {
// Parent reads from pipe
close(fds[1]);
const unsigned char locked = parentReadState(fds[0]);
close(fds[0]);
EXPECT_EQ(0, locked);
}
EXPECT_EQ (0, remove(TEST_DATA_TOPBUILDDIR "/test2_lockfile"));
}
EXPECT_TRUE(locker.unlock());
EXPECT_EQ (0, remove(TEST_DATA_TOPBUILDDIR "/test1_lockfile"));
}
} // unnamed namespace
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