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NAME="POSIX-THREAD-CANCELLATION">Thread Cancellation &#0091;POSIX Section 18&#0093;</H1
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>int pthread&#0095;cancel(pthread&#0095;t thread); 
int pthread&#0095;setcancelstate(int state, int &#0042;oldstate); 
int pthread&#0095;setcanceltype(int type, int &#0042;oldtype); 
void pthread&#0095;testcancel(void); 
void pthread&#0095;cleanup&#0095;push( void (&#0042;routine)(void &#0042;),
                           void &#0042;arg); 
void pthread&#0095;cleanup&#0095;pop( int execute);</PRE
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>Asynchronous cancellation is only partially implemented.  In
particular, cancellation may occur in unexpected places in some
functions. It is strongly recommended that only synchronous
cancellation be used. </P
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