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31 lines
421 B
C
31 lines
421 B
C
#include <lib9.h>
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#include <thread.h>
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Channel *c[3];
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void
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pingpong(void *v)
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{
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int n;
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Channel **c;
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c = v;
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do{
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n = recvul(c[0]);
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sendul(c[1], n-1);
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}while(n > 0);
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exit(0);
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}
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void
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threadmain(int argc, char **argv)
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{
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c[0] = chancreate(sizeof(ulong), 1);
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c[1] = chancreate(sizeof(ulong), 1);
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c[2] = c[0];
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proccreate(pingpong, c, 16384);
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threadcreate(pingpong, c+1, 16384);
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sendul(c[0], atoi(argv[1]));
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}
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