haoyuan2
123 строки
3.3 KiB
C++
123 строки
3.3 KiB
C++
/* Copyright (c) 2008 - 2022 Advanced Micro Devices, Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE. */
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#include "platform/runtime.hpp"
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#include "os/os.hpp"
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#include "thread/thread.hpp"
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#include "device/device.hpp"
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#include "utils/flags.hpp"
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#include "utils/options.hpp"
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#include "platform/context.hpp"
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#include "platform/agent.hpp"
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#include "amdocl/cl_gl_amd.hpp"
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#ifdef _WIN32
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#include <d3d10_1.h>
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#include <dxgi.h>
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#include "CL/cl_d3d10.h"
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#endif //_WIN32
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#if defined(_MSC_VER) // both Win32 and Win64
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#include <intrin.h>
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#endif
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#include <atomic>
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#include <cstdlib>
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#include <iostream>
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namespace amd {
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volatile bool Runtime::initialized_ = false;
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bool Runtime::init() {
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if (initialized_) {
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return true;
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}
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// Enter a very basic critical region. We want to prevent 2 threads
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// from concurrently executing the init() routines. We can't use a
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// Monitor since the system is not yet initialized.
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static std::atomic_flag lock = ATOMIC_FLAG_INIT;
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struct CriticalRegion {
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std::atomic_flag& lock_;
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CriticalRegion(std::atomic_flag& lock) : lock_(lock) {
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while (lock.test_and_set(std::memory_order_acquire)) {
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Os::yield();
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}
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}
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~CriticalRegion() { lock_.clear(std::memory_order_release); }
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} region(lock);
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if (initialized_) {
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return true;
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}
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if (!Flag::init() || !option::init() || !Device::init()
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// Agent initializes last
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|| !Agent::init()) {
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ClPrint(LOG_ERROR, LOG_INIT, "Runtime initialization failed");
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return false;
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}
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initialized_ = true;
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ClTrace(LOG_DEBUG, LOG_INIT);
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return true;
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}
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void Runtime::tearDown() {
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if (!initialized_) {
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return;
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}
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ClTrace(LOG_DEBUG, LOG_INIT);
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Agent::tearDown();
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Device::tearDown();
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option::teardown();
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Flag::tearDown();
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if (outFile != stderr && outFile != nullptr) {
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fclose(outFile);
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}
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initialized_ = false;
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}
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class RuntimeTearDown : public amd::HeapObject {
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public:
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RuntimeTearDown() {}
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~RuntimeTearDown() { /*Runtime::tearDown();*/ }
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} runtime_tear_down;
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uint ReferenceCountedObject::retain() {
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return referenceCount_.fetch_add(1, std::memory_order_relaxed) + 1;
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}
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uint ReferenceCountedObject::release() {
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uint newCount = referenceCount_.fetch_sub(1, std::memory_order_relaxed) - 1;
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if (newCount == 0) {
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if (terminate()) {
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delete this;
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}
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}
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return newCount;
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}
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} // namespace amd
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