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#include "thread_pool.h"
namespace gdb {
thread_pool::~thread_pool ()
{
{
std::lock_guard<std::mutex> guard (m_tasks_mutex);
m_shutdown = true;
m_tasks_cv.notify_all ();
}
for (auto& t : m_threads)
t.join();
}
void
thread_pool::start (size_t num_threads)
{
for (size_t i = 0; i < num_threads; ++i)
{
m_threads.emplace_back (&thread_pool::thread_function, this);
}
m_started = true;
}
void
thread_pool::thread_function ()
{
while (!m_shutdown)
{
task t;
{
std::unique_lock<std::mutex> guard (m_tasks_mutex);
if (m_shutdown)
break;
if (m_tasks.empty ())
m_tasks_cv.wait (guard);
if (m_shutdown)
break;
if (m_tasks.empty ())
continue;
t = std::move (m_tasks.front());
m_tasks.pop();
}
t ();
}
}
}
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