cne_mutex_helper.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2022 Intel Corporation
 */
 
#ifndef __CNE_MUTEX_HELPER_H
#define __CNE_MUTEX_HELPER_H
 
#include <pthread.h>
#include <cne_log.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
static inline int
cne_mutex_create(pthread_mutex_t *mutex, int flags)
{
    pthread_mutexattr_t attr;
    int inited = 0, ret = EFAULT;
 
    if (!mutex)
        goto err;
 
#define __do(_exp)    \
    do {              \
        ret = _exp;   \
        if (ret)      \
            goto err; \
    } while (0 /* CONSTCOND */)
 
    __do(pthread_mutexattr_init(&attr));
    inited = 1;
 
    __do(pthread_mutexattr_settype(&attr, flags));
 
    __do(pthread_mutex_init(mutex, &attr));
 
    __do(pthread_mutexattr_destroy(&attr));
 
#undef __do
 
    return 0;
err:
    if (inited) {
        /* Do not lose the previous error value */
        if (pthread_mutexattr_destroy(&attr))
            CNE_DEBUG("unable to destroy mutex attribute, but is not the root cause\n");
    }
 
    errno = ret;
    return -1;
}
 
static inline int
cne_mutex_destroy(pthread_mutex_t *mutex)
{
    int ret = 0;
 
    if (mutex)
        ret = pthread_mutex_destroy(mutex);
 
    errno = ret;
    return (ret != 0) ? -1 : 0;
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* __CNE_MUTEX_HELPER_H */