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