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//===-- ProcessRunLock.cpp ------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _WIN32
#include "lldb/Host/ProcessRunLock.h"
namespace lldb_private {
ProcessRunLock::ProcessRunLock() {
int err = ::pthread_rwlock_init(&m_rwlock, nullptr);
(void)err;
}
ProcessRunLock::~ProcessRunLock() {
int err = ::pthread_rwlock_destroy(&m_rwlock);
(void)err;
}
bool ProcessRunLock::ReadTryLock() {
::pthread_rwlock_rdlock(&m_rwlock);
if (!m_running) {
// coverity[missing_unlock]
return true;
}
::pthread_rwlock_unlock(&m_rwlock);
return false;
}
bool ProcessRunLock::ReadUnlock() {
return ::pthread_rwlock_unlock(&m_rwlock) == 0;
}
bool ProcessRunLock::SetRunning() {
::pthread_rwlock_wrlock(&m_rwlock);
m_running = true;
::pthread_rwlock_unlock(&m_rwlock);
return true;
}
bool ProcessRunLock::TrySetRunning() {
bool r;
if (::pthread_rwlock_trywrlock(&m_rwlock) == 0) {
r = !m_running;
m_running = true;
::pthread_rwlock_unlock(&m_rwlock);
return r;
}
return false;
}
bool ProcessRunLock::SetStopped() {
::pthread_rwlock_wrlock(&m_rwlock);
m_running = false;
::pthread_rwlock_unlock(&m_rwlock);
return true;
}
}
#endif
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