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//===-- ProcessRunLock.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef _WIN32
#include "lldb/Host/ProcessRunLock.h"
namespace lldb_private {
ProcessRunLock::ProcessRunLock() : m_running(false) {
int err = ::pthread_rwlock_init(&m_rwlock, NULL);
(void)err;
//#if LLDB_CONFIGURATION_DEBUG
// assert(err == 0);
//#endif
}
ProcessRunLock::~ProcessRunLock() {
int err = ::pthread_rwlock_destroy(&m_rwlock);
(void)err;
//#if LLDB_CONFIGURATION_DEBUG
// assert(err == 0);
//#endif
}
bool ProcessRunLock::ReadTryLock() {
::pthread_rwlock_rdlock(&m_rwlock);
if (!m_running) {
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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