51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
#include <stdio.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <pthread.h>
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#include <stdlib.h>
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static void * TestThread ( void * );
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int main (void)
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{
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pthread_t t;
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pthread_create (&t, NULL, TestThread, NULL);
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pthread_join (t, NULL);
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return 0;
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}
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static void * TestThread ( void *not_used )
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{
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pthread_t iAm = pthread_self();
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int status;
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switch (fork ())
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{
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case -1:
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exit(1);
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case 0:
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if (iAm != pthread_self())
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exit (1);
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else
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exit (0);
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break;
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default:
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wait (&status);
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if (status != 0)
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exit (1);
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}
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exit(0);
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}
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/*
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The forked child will not get the same thread handle as its parent, it
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will get the thread handle from the main thread instead. The child will
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not terminate because the threadcount is still 2 after the fork (it is
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set to 1 in MTinterface::Init and then set back to 2 after the childs
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memory gets overwritten by the parent).
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concept test by Thomas Pfaff <tpfaff@gmx.net>
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scritable test by Robert Collins <rbtcollins@hotmail.com>
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*/
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