pthread_barrierattr_setpshared.c

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8                               :vi │
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│ Copyright 2022 Justine Alexandra Roberts Tunney                              │
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│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
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│ PERFORMANCE OF THIS SOFTWARE.                                                │
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#include "libc/errno.h"
#include "libc/thread/thread.h"

/**
 * Sets barrier process sharing.
 *
 * @param pshared can be one of
 *     - `PTHREAD_PROCESS_PRIVATE` (default)
 *     - `PTHREAD_PROCESS_SHARED` (unsupported)
 * @return 0 on success, or error on failure
 * @raises EINVAL if `pshared` is invalid
 */
errno_t pthread_barrierattr_setpshared(pthread_barrierattr_t *attr,
                                       int pshared) {
  switch (pshared) {
    case PTHREAD_PROCESS_PRIVATE:
      *attr = pshared;
      return 0;
    default:
      return EINVAL;
  }
}