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#include <mbgl/actor/thread_pool.hpp>
#include <mbgl/actor/mailbox.hpp>
namespace mbgl {
ThreadPool::ThreadPool(std::size_t count) {
threads.reserve(count);
for (std::size_t i = 0; i < count; ++i) {
threads.emplace_back([this] () {
while (true) {
std::unique_lock<std::mutex> lock(mutex);
cv.wait(lock, [this] {
return !queue.empty() || terminate.load();
});
if (terminate.load()) {
return;
}
auto mailbox = queue.front();
queue.pop();
lock.unlock();
if (auto locked = mailbox.lock()) {
locked->receive();
}
}
});
}
}
ThreadPool::~ThreadPool() {
terminate.store(true);
cv.notify_all();
for (auto& thread : threads) {
thread.join();
}
}
void ThreadPool::schedule(std::weak_ptr<Mailbox> mailbox) {
std::lock_guard<std::mutex> lock(mutex);
queue.push(mailbox);
cv.notify_one();
}
} // namespace mbgl
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