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Man Pages


Manual Reference Pages  -  PTHREAD_CANCEL (3)

NAME

pthread_cancel - cancel execution of a thread

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Standards
Authors

LIBRARY


.Lb libpthread

SYNOPSIS


.In pthread.h int pthread_cancel pthread_t thread

DESCRIPTION

The pthread_cancel function requests that thread be canceled. The target thread’s cancelability state and type determines when the cancellation takes effect. When the cancellation is acted on, the cancellation cleanup handlers for thread are called. When the last cancellation cleanup handler returns, the thread-specific data destructor functions will be called for thread. When the last destructor function returns, thread will be terminated.

The cancellation processing in the target thread runs asynchronously with respect to the calling thread returning from pthread_cancel.

A status of PTHREAD_CANCELED is made available to any threads joining with the target. The symbolic constant PTHREAD_CANCELED expands to a constant expression of type (void *), whose value matches no pointer to an object in memory nor the value NULL.

RETURN VALUES

If successful, the pthread_cancel functions will return zero. Otherwise an error number will be returned to indicate the error.

ERRORS

The pthread_cancel function will fail if:
[ESRCH]
  No thread could be found corresponding to that specified by the given thread ID.

SEE ALSO

pthread_cleanup_pop(3), pthread_cleanup_push(3), pthread_exit(3), pthread_join(3), pthread_setcancelstate(3), pthread_setcanceltype(3), pthread_testcancel(3)

STANDARDS

The pthread_cancel function conforms to -p1003.1-96.

AUTHORS

This manual page was written by
.An David Leonard Aq d@openbsd.org for the
.Ox implementation of pthread_cancel.
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