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pthread_detach(3) [osf1 man page]

pthread_detach(3)					     Library Functions Manual						 pthread_detach(3)

NAME
pthread_detach - Marks a thread object for deletion. LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS
#include <pthread.h> int pthread_detach( pthread_t thread); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: IEEE Std 1003.1c-1995, POSIX System Application Program Interface PARAMETERS
Thread object being marked for deletion. DESCRIPTION
This routine marks the specified thread object to indicate that storage for the corresponding thread can be reclaimed when the thread ter- minates. This includes storage for the thread argument's return value, as well as the thread object. If thread has not terminated when this routine is called, this routine does not cause it to terminate. When a thread object is no longer referenced, call this routine. The results of this routine are unpredictable if the value of thread refers to a thread object that does not exist. A thread can be created already detached by setting its thread object's detachstate attribute. The pthread_join(3) routine also detaches the target thread after pthread_join(3) returns successfully. RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The value specified by thread does not refer to a joinable thread. The value specified by thread cannot be found. ERRORS
None RELATED INFORMATION
Routines: pthread_cancel(3), pthread_create(3), pthread_exit(3), pthread_join(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_detach(3)

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pthread_attr_setdetachstate(3)				     Library Functions Manual				    pthread_attr_setdetachstate(3)

NAME
pthread_attr_setdetachstate - Changes the detachstate attribute in the specified thread attributes object. LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS
#include <pthread.h> int pthread_attr_setdetachstate( pthread_attr_t *attr, int detachstate); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: IEEE Std 1003.1c-1995, POSIX System Application Program Interface PARAMETERS
Thread attributes object to be modified. New value for the detachstate attribute. Valid values are as follows: This the default value. Threads are created in "undetached" state. The created thread is detached immediately, before it begins running. DESCRIPTION
This routine changes the detachstate attribute in the thread attributes object specified by the attr argument. The detachstate attribute specifies whether the thread created using the specified thread attributes object is created in a detached state or not. A value of PTHREAD_CREATE_JOINABLE indicates the thread is not detached, and a value of PTHREAD_CREATE_DETACHED indicates the thread is detached. PTHREAD_CREATE_JOINABLE is the default value. Your program cannot use the thread handle (the value of type pthread_t that is returned by the pthread_create(3) routine) for a detached thread because the thread might terminate asynchronously, and a thread ID is not valid after termination. In particular, it is an error to attempt to detach or join with a detached thread. When a thread that has not been detached completes execution, DECthreads retains the state of that thread to allow another thread to join with it. If the thread is detached before it completes execution, DECthreads is free to immediately reclaim the thread's storage and resources. Failing to detach threads that have completed execution can result in wasting resources, so threads should be detached as soon as the program is done with them. If there is no need to use the thread's handle after creation, create the thread initially detached. RETURN VALUES
If an error condition occurs, this routine returns an integer value indicating the type of error. Possible return values are as follows: Successful completion. The detached state attribute is returned in detachstate. The value specified by the attr argument is not a valid thread attributes object or the detachstate argument is invalid. ERRORS
None RELATED INFORMATION
Functions: pthread_attr_init(3), pthread_attr_getdetachstate(3), pthread_create(3), pthread_join(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_attr_setdetachstate(3)

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