EventLoopThreadPool.cc

#include "EventLoopThreadPool.h"
#include "EventLoopThread.h"

#include <memory>
#include <utility>

EventLoopThreadPool::EventLoopThreadPool(EventLoop *baseLoop, std::string nameArg)
        : baseLoop_(baseLoop), name_(std::move(nameArg)), started_(false), numThreads_(0), next_(0) {}


void EventLoopThreadPool::start(const ThreadInitCallback &cb) {
    started_ = true;

    for (int i = 0; i < numThreads_; ++i) {
        char buf[name_.size() + 32];
        snprintf(buf, sizeof buf, "%s%d", name_.c_str(), i);
        auto *t = new EventLoopThread(cb, buf);
        threads_.push_back(std::unique_ptr<EventLoopThread>(t));
        loops_.push_back(t->startLoop());
    }

    if (numThreads_ == 0 && cb) {
        cb(baseLoop_);
    }
}

EventLoop *EventLoopThreadPool::getNextLoop() {
    EventLoop *loop = baseLoop_;

    if (!loops_.empty()) {
        loop = loops_[next_];
        ++next_;
        if (next_ >= loops_.size()) {
            next_ = 0;
        }
    }

    return loop;
}

std::vector<EventLoop *> EventLoopThreadPool::getAllLoops() {
    if (loops_.empty()) {
        return std::vector<EventLoop *>(1, baseLoop_);
    }
    return loops_;
}