#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <assert.h>
#include <pthread.h>

#include "macro.h"
#include "malloc.h"
#include "mutex.h"

struct sa_mutex {
    pthread_mutex_t mutex;
};

struct sa_cond {
    pthread_cond_t cond;
};

sa_mutex_t* sa_mutex_new(int recursive) {
    sa_mutex_t *m;
    pthread_mutexattr_t attr;

    pthread_mutexattr_init(&attr);

    if (recursive)
        sa_assert_success(pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE));

    if (!(m = sa_new(sa_mutex_t, 1)))
        return NULL;

    sa_assert_success(pthread_mutex_init(&m->mutex, &attr));
    return m;
}

void sa_mutex_free(sa_mutex_t *m) {
    assert(m);

    sa_assert_success(pthread_mutex_destroy(&m->mutex));
    sa_free(m);
}

void sa_mutex_lock(sa_mutex_t *m) {
    assert(m);

    sa_assert_success(pthread_mutex_lock(&m->mutex));
}

void sa_mutex_unlock(sa_mutex_t *m) {
    assert(m);

    sa_assert_success(pthread_mutex_unlock(&m->mutex));
}

sa_cond_t *sa_cond_new(void) {
    sa_cond_t *c;

    if (!(c = sa_new(sa_cond_t, 1)))
        return NULL;

    sa_assert_success(pthread_cond_init(&c->cond, NULL));
    return c;
}

void sa_cond_free(sa_cond_t *c) {
    assert(c);

    sa_assert_success(pthread_cond_destroy(&c->cond));
    sa_free(c);
}

void sa_cond_signal(sa_cond_t *c, int broadcast) {
    assert(c);

    if (broadcast)
        sa_assert_success(pthread_cond_broadcast(&c->cond));
    else
        sa_assert_success(pthread_cond_signal(&c->cond));
}

int sa_cond_wait(sa_cond_t *c, sa_mutex_t *m) {
    assert(c);
    assert(m);

    return pthread_cond_wait(&c->cond, &m->mutex);
}