Atmosphere/libraries/libstratosphere/source/os/impl/os_giant_lock.os.macos.cpp

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/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "os_giant_lock.os.macos.hpp"
#include <sys/syscall.h>
#include <unistd.h>
#include <fcntl.h>
namespace ams::os::impl {
#define AMS_OS_IMPL_GIANT_LOCK_FILE_PATH "/tmp/.ams_os_giant_lock"
void GiantLockMacosImpl::Lock() {
m_fd = ::open(AMS_OS_IMPL_GIANT_LOCK_FILE_PATH, O_RDWR | O_CREAT | O_CLOEXEC, S_IRUSR | S_IWUSR);
AMS_ABORT_UNLESS(m_fd >= 0);
while (::lockf(m_fd, F_LOCK, 0) < 0) {
AMS_ABORT_UNLESS(errno == EINTR);
}
}
void GiantLockMacosImpl::Unlock() {
AMS_ASSERT(m_fd >= 0);
while (::lockf(m_fd, F_ULOCK, 0) < 0) {
AMS_ABORT_UNLESS(errno == EINTR);
}
while (::close(m_fd) < 0) {
AMS_ABORT_UNLESS(errno == EINTR);
}
m_fd = os::InvalidNativeHandle;
}
}