48 lines
1.0 KiB
C
Executable File
48 lines
1.0 KiB
C
Executable File
#include <stdio.h>
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#include <stdlib.h>
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#include "tpl.h"
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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int main() {
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tpl_node *tn;
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unsigned i, sum=0;
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int fd[2], pid,rc;
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void *img;
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size_t sz;
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pipe(fd);
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if ( (pid = fork()) == 0) { /* child */
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rc = tpl_gather(TPL_GATHER_BLOCKING,fd[0],&img,&sz);
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if (rc != 1) {
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printf("error: rc non-zero: %d\n", rc);
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exit(-1);
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}
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tn = tpl_map("A(u)",&i);
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tpl_load(tn, TPL_MEM, img,sz);
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while (tpl_unpack(tn,1) > 0) sum += i;
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tpl_free(tn);
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printf("sum is %d\n", sum);
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} else if (pid > 0) { /* parent */
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tn = tpl_map("A(u)",&i);
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for(i=0;i<10000;i++) tpl_pack(tn,1);
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tpl_dump(tn,TPL_FD, fd[1] );
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tpl_free(tn);
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close(fd[1]);
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waitpid(pid,NULL,0);
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} else if (pid == -1) {
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perror("fork error");
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}
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return(0);
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}
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