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