fiber.cpp

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/*
 * Zth (libzth), a cooperative userspace multitasking library.
 * Copyright (C) 2019-2022  Jochem Rutgers
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */
 
#include <libzth/fiber.h>
#include <libzth/worker.h>
 
namespace zth {
 
Fiber::FiberHook* Fiber::hookNew = nullptr;
Fiber::FiberHook* Fiber::hookDead = nullptr;
 
int Runnable::run()
{
        Worker* w = Worker::instance();
        if(unlikely(!w))
                return EAGAIN;
 
        Fiber* f = new Fiber(&Runnable::entry_, (void*)this);
        int res = 0;
        if(unlikely((res = fiberHook(*f)))) {
                // Rollback.
                delete f;
                return res;
        }
 
        w->add(f);
        return 0;
}
 
} // namespace zth