Semaphore.cpp

/*
    SignalView LV2 analysis plugin
    Copyright (C) 2025  Timothy William Krause
    mailto:tmkrs4482@gmail.com

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#include "Semaphore.h"

Semaphore::Semaphore(int count)
{
    sem_init(&sem, 0, count);
}

Semaphore::~Semaphore(void)
{
    sem_destroy(&sem);
}

void Semaphore::post(void)
{
    int val;
    sem_getvalue(&sem, &val);
    if(val<=0)
        sem_post(&sem);
}

void Semaphore::wait(void)
{
    sem_wait(&sem);
}