mirror of https://github.com/alibaba/MNN.git
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
//
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// ExecutorScope.cpp
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// MNN
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//
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// Created by MNN on 2020/10/26.
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// Copyright © 2018, Alibaba Group Holding Limited
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//
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#include <thread>
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#include <mutex>
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#include <MNN/expr/Executor.hpp>
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#include <MNN/expr/Scope.hpp>
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#include <MNN/expr/ExecutorScope.hpp>
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namespace MNN {
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namespace Express {
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typedef std::shared_ptr<Express::Executor> ExecutorRef;
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#if TARGET_OS_IPHONE
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#include <pthread.h>
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static pthread_key_t gKey;
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static std::once_flag gInitFlag;
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#else
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thread_local static std::once_flag gInitFlag;
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thread_local static Scope<ExecutorRef>* g_executor_scope = nullptr;
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#endif
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static Scope<ExecutorRef>* _getGlobalScope() {
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std::call_once(gInitFlag,
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[&]() {
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#if TARGET_OS_IPHONE
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pthread_key_create(&gKey, NULL);
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#else
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g_executor_scope = new Scope<ExecutorRef>;
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#endif
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});
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#if TARGET_OS_IPHONE
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Scope<ExecutorRef>* scope = static_cast<Scope<ExecutorRef>*>(pthread_getspecific(gKey));
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if (!scope) {
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scope = new Scope<ExecutorRef>;
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pthread_setspecific(gKey, static_cast<void*>(scope));
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}
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return scope;
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#else
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return g_executor_scope;
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#endif
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}
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ExecutorScope::ExecutorScope(const std::shared_ptr<Executor>& current) {
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_getGlobalScope()->EnterScope(current);
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}
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ExecutorScope::ExecutorScope(const std::string& scope_name,
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const std::shared_ptr<Executor>& current) {
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_getGlobalScope()->EnterScope(scope_name, current);
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}
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ExecutorScope::~ExecutorScope() {
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_getGlobalScope()->ExitScope();
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}
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const std::shared_ptr<Executor> ExecutorScope::Current() {
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auto exe = _getGlobalScope()->Content();
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if (exe) {
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return exe;
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}
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return Executor::getGlobalExecutor();
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}
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} // namespace Express
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} // namespace MNN
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