b74c6498aa
Previously we loop through local ports every second, this patch improves the strategy by retrying only just disconnected emulators. Bug: 26468076 Bug: 19974213 Bug: 22920867 Change-Id: I43ccb746922d104202b0f81a3d163d850bbc890e
120 lines
2.6 KiB
C++
120 lines
2.6 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#if defined(_WIN32)
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#include <windows.h>
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#include <android-base/macros.h>
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#include "adb.h"
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// The prebuilt version of mingw we use doesn't support mutex or recursive_mutex.
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// Therefore, implement our own using the Windows primitives.
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// Put them directly into the std namespace, so that when they're actually available, the build
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// breaks until they're removed.
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#include <mutex>
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namespace std {
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// CRITICAL_SECTION is recursive, so just wrap it in a Mutex-compatible class.
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class recursive_mutex {
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public:
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typedef CRITICAL_SECTION* native_handle_type;
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recursive_mutex() {
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InitializeCriticalSection(&cs_);
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}
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~recursive_mutex() {
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DeleteCriticalSection(&cs_);
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}
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void lock() {
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EnterCriticalSection(&cs_);
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}
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bool try_lock() {
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return TryEnterCriticalSection(&cs_);
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}
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void unlock() {
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LeaveCriticalSection(&cs_);
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}
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native_handle_type native_handle() {
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return &cs_;
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}
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private:
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CRITICAL_SECTION cs_;
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DISALLOW_COPY_AND_ASSIGN(recursive_mutex);
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};
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class mutex {
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public:
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typedef CRITICAL_SECTION* native_handle_type;
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mutex() {
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}
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~mutex() {
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}
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void lock() {
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mutex_.lock();
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if (++lock_count_ != 1) {
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fatal("non-recursive mutex locked reentrantly");
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}
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}
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void unlock() {
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if (--lock_count_ != 0) {
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fatal("non-recursive mutex unlock resulted in unexpected lock count: %d", lock_count_);
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}
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mutex_.unlock();
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}
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bool try_lock() {
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if (!mutex_.try_lock()) {
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return false;
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}
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if (lock_count_ != 0) {
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mutex_.unlock();
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return false;
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}
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++lock_count_;
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return true;
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}
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native_handle_type native_handle() {
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return mutex_.native_handle();
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}
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private:
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recursive_mutex mutex_;
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size_t lock_count_ = 0;
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friend class condition_variable;
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};
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}
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#endif // defined(_WIN32)
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