03-18-2015
Thanks, good to know that in practice it is much more usable than the POSIX standard suggests...
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LEARN ABOUT NETBSD
pthread_attr_destroy
PTHREAD_ATTR(3) BSD Library Functions Manual PTHREAD_ATTR(3)
NAME
pthread_attr_init, pthread_attr_destroy -- thread attribute operations
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_attr_init(pthread_attr_t *attr);
int
pthread_attr_destroy(pthread_attr_t *attr);
DESCRIPTION
Thread attributes are used to specify parameters to pthread_create(). One attribute object can be used in multiple calls to
pthread_create(), with or without modifications between the calls. The pthread_attr_t type is an opaque representation of the thread
attributes; any access to the object other than via the described pthread_attr_*() functions may result in undefined behavior.
The pthread_attr_init() function initializes attr with the default thread attributes used in the implementation. Depending on the implemen-
tation, undefined behavior may follow if an uninitialized thread attribute object is used with some of the thread attribute functions. It is
therefore a good practice to always use pthread_attr_init(), even if this might be unnecessary. Undefined behavior may also follow if an
already initialized attr is used with pthread_attr_init().
When the attribute object is no longer needed, it should be destroyed by using pthread_attr_destroy(). The function has no effect on threads
that were created by using a given attribute object. A destroyed attr can be reinitialized using pthread_attr_init(), but all other actions
with the destroyed object are unspecified.
The following standard thread attribute functions are available:
Function Description
pthread_attr_getdetachstate(3) thread detach state
pthread_attr_getguardsize(3) thread guard size
pthread_attr_getinheritsched(3) inherit scheduler attribute
pthread_attr_getschedparam(3) thread scheduling parameter
pthread_attr_getschedpolicy(3) thread scheduling policy
pthread_attr_getscope(3) thread contention scope
pthread_attr_getstack(3) thread stack
pthread_attr_getstacksize(3) thread stack size
pthread_attr_getstackaddr(3) thread stack address
Each listed pthread_attr_get*() function contains a pthread_attr_set*() counterpart. In addition, the following NetBSD specific extensions
are available:
Function Description
pthread_attr_get_np(3) attributes of a running thread
pthread_attr_getname_np(3) descriptive name of an attribute
RETURN VALUES
If successful, these functions return 0. Otherwise, an error number is returned to indicate the error.
ERRORS
No errors are defined for pthread_attr_init() and pthread_attr_destroy().
SEE ALSO
pthread_create(3), pthread_join(3)
STANDARDS
Both pthread_attr_init() and pthread_attr_destroy() conform to IEEE Std 1003.1-2001 (``POSIX.1'').
BSD
July 9, 2010 BSD