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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/threading/thread_id_name_manager.h"
#include <stdlib.h>
#include <string.h>
#include "base/logging.h"
#include "base/memory/singleton.h"
#include "base/string_util.h"
namespace base {
namespace {
static const char kDefaultName[] = "";
static std::string* g_default_name;
typedef std::map<PlatformThreadId, std::string*>::iterator
ThreadIdToInternedNameIterator;
typedef std::map<std::string, std::string*>::iterator
NameToInternedNameIterator;
}
ThreadIdNameManager::ThreadIdNameManager() {
g_default_name = new std::string(kDefaultName);
AutoLock locked(lock_);
name_to_interned_name_[kDefaultName] = g_default_name;
}
ThreadIdNameManager::~ThreadIdNameManager() {
}
ThreadIdNameManager* ThreadIdNameManager::GetInstance() {
return Singleton<ThreadIdNameManager,
LeakySingletonTraits<ThreadIdNameManager> >::get();
}
const char* ThreadIdNameManager::GetDefaultInternedString() {
return g_default_name->c_str();
}
void ThreadIdNameManager::SetName(PlatformThreadId id, const char* name) {
std::string str_name(name);
AutoLock locked(lock_);
NameToInternedNameIterator iter = name_to_interned_name_.find(str_name);
std::string* leaked_str = NULL;
if (iter != name_to_interned_name_.end()) {
leaked_str = iter->second;
} else {
leaked_str = new std::string(str_name);
name_to_interned_name_[str_name] = leaked_str;
}
thread_id_to_interned_name_[id] = leaked_str;
}
const char* ThreadIdNameManager::GetName(PlatformThreadId id) {
AutoLock locked(lock_);
ThreadIdToInternedNameIterator iter = thread_id_to_interned_name_.find(id);
// A platform thread may not have a name set, so return blank.
if (iter == thread_id_to_interned_name_.end())
return name_to_interned_name_[kDefaultName]->c_str();
return iter->second->c_str();
}
void ThreadIdNameManager::RemoveName(PlatformThreadId id) {
if (id == kInvalidThreadId)
return;
AutoLock locked(lock_);
ThreadIdToInternedNameIterator iter = thread_id_to_interned_name_.find(id);
DCHECK((iter != thread_id_to_interned_name_.end()));
thread_id_to_interned_name_.erase(iter);
}
} // namespace base
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