pthread_condattr_getpshared(2)           pthread_condattr_getpshared(2)

  pthread_condattr_getpshared()

  NAME

    pthread_condattr_getpshared(), pthread_condattr_setpshared() - get or set
    the process-shared attribute in a condition variable attributes object

  SYNOPSIS

    #include 

    int pthread_condattr_getpshared(const pthread_condattr_t *attr, int
    *pshared);
    int pthread_condattr_setpshared(pthread_condattr_t *attr, int pshared);

  DESCRIPTION

    The pthread_condattr_setpshared(2) function sets the process-shared
    attribute in the condition variable attributes object referenced by the
    attr argument to the value referenced by the pshared argument. When the
    process-shared attribute is set to PTHREAD_PROCESS_SHARED, the condition
    variable can be acted upon by any thread that can access the memory where
    the condition variable is stored, even if the condition variable is
    allocated in memory shared by multiple processes. When the process-shared
    attribute is set to PTHREAD_PROCESS_PRIVATE (the default), the condition
    variable can be acted upon only by threads that have been created in the
    same process as the thread that initialized the condition variable.

    The pthread_condattr_getpshared(2) function retrieves the process-shared
    attribute in the condition variable attributes object referenced by attr,
    storing the value in the location referenced by the pshared argument.

  IMPLEMENTATION ISSUES

    In this version of Interix, this function supports only the
    PTHREAD_PROCESS_PRIVATE process-shared attribute.

  RETURN VALUES

    On success, both functions return 0; otherwise, an error code is returned.

  ERRORS

    The pthread_condattr_getpshared() function can fail for the following
    reason:

    [EINVAL]
        The attr argument is invalid.

    The pthread_condattr_setpshared() function can fail for the following
    reason:

    [EINVAL]
        The value specified by pshared is out of bounds.

    Neither function returns [EINTR]..

  SEE ALSO

    pthread_create(2)

    pthread_cond_destroy(2)

    pthread_condattr_destroy(2)

    pthread_mutex_destroy(2)

  USAGE NOTES

    All of these functions are thread safe.

    None of these functions are async-signal safe.