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pthread_self(3) [osf1 man page]

pthread_self(3) 					     Library Functions Manual						   pthread_self(3)

NAME
pthread_self - Obtains the identifier of the calling thread. LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS
#include <pthread.h> pthread_t pthread_self(void); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: IEEE Std 1003.1c-1995, POSIX System Application Program Interface PARAMETERS
None DESCRIPTION
This routine returns the address of the calling thread's own thread identifier. For example, you can use this thread object to obtain the calling thread's own sequence number. To do so, pass the return value from this routine in a call to the pthread_getsequence_np(3) routine, as follows: unsigned long this_thread_nbr; . . . this_thread_nbr = pthread_getsequence_np( pthread_self( ) ); . . . The return value from the pthread_self(3) routine becomes meaningless after the calling thread is destroyed. RETURN VALUES
Returns the address of the calling thread's own thread object. ERRORS
None RELATED INFORMATION
Functions: pthread_cancel(3), pthread_create(3), pthread_detach(3), pthread_exit(3), pthread_getsequence_np(3), pthread_join(3), pthread_kill(3), pthread_sigmask(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_self(3)

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pthread_cancel(3)					     Library Functions Manual						 pthread_cancel(3)

NAME
pthread_cancel - Allows a thread to request a thread to terminate execution. LIBRARY
DECthreads POSIX 1003.1c Library (libpthread.so) SYNOPSIS
#include <pthread.h> int pthread_cancel( 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 that receives a cancelation request. DESCRIPTION
This routine sends a cancelation request to the specified target thread. A cancelation request is a mechanism by which a calling thread requests the target thread to terminate as quickly as possible. Issuing a cancelation request does not guarantee that the target thread will receive or handle the request. When the cancelation request is acted on, all active cleanup handler routines for the target thread are called. When the last cleanup han- dler returns, the thread-specific data destructor routines are called for each thread-specific data key with a destructor and for which the target thread has a non-NULL value. Finally, the target thread is terminated. Note that cancelation of the target thread runs asynchronously with respect to the calling thread's returning from pthread_cancel(3). The target thread's cancelability state and type determine when or if the cancelation takes place, as follows: The target thread can delay can- celation during critical operations by setting its cancelability state to PTHREAD_CANCEL_DISABLE. Because of communication delays, the calling thread can only rely on the fact that a cancelation request will eventually become pending in the target thread (provided that the target thread does not terminate beforehand). The calling thread has no guarantee that a pending cancelation request will be delivered because delivery is controlled by the target thread. When a cancelation request is delivered to a thread, termination processing is similar to that for pthread_exit(3). For more information about thread termination, see the discussion of thread termination in pthread_create(3). This routine is preferred in implementing an Ada abort statement and any other language- or software-defined construct for requesting thread cancelation. The results of this routine are unpredictable, if the value specified in thread refers to a thread that does not currently exist. 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 specified thread is invalid. The thread argument does not specify an existing thread. ERRORS
None RELATED INFORMATION
Functions: pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_create(3), pthread_exit(3), pthread_join(3), pthread_setcancelstate(3), pthread_setcanceltype(3), pthread_testcancel(3) Manuals: Guide to DECthreads and Programmer's Guide delim off pthread_cancel(3)

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