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Copy pathKThreadPool.cpp
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93 lines (84 loc) · 1.34 KB
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#include "KThreadPool.h"
#include "assert.h"
ThreadPool::ThreadPool(const std::string &name)
: name_(name),
running_(false)
{
}
ThreadPool::~ThreadPool()
{
if (running_)
{
stop();
}
}
void ThreadPool::start(int numThreads)
{
assert(threads_.empty());
running_ = true;
threads_.reserve(numThreads);
for (size_t i = 0; i < numThreads; ++i)
{
threads_.push_back(std::thread(
std::bind(&ThreadPool::runInThread, this)));
}
}
// 定义stop
void ThreadPool::stop()
{
{
std::unique_lock<std::mutex> lock(mutex_);
running_ = false;
cond_.notify_all();
}
for (std::thread &th : threads_)
{
th.join();
}
}
// 添加任务
void ThreadPool::run(const Task &task)
{
if (threads_.empty())
{
task();
}
else
{
std::unique_lock<std::mutex> lock(mutex_);
queue_.push_back(task);
cond_.notify_one();
}
}
ThreadPool::Task ThreadPool::take()
{
std::unique_lock<std::mutex> lock(mutex_);
cond_.wait(lock, [this] {
return (!running_ || !queue_.empty());
});
Task task;
if (!this->queue_.empty())
{
task = queue_.front();
queue_.pop_front();
}
return task;
}
void ThreadPool::runInThread()
{
try
{
while (running_ == true)
{
Task task(take());
if (task)
{
task();
}
}
}
catch (...)
{
// deal with error
}
}