mirror of
https://github.com/troydhanson/tpl.git
synced 2024-12-26 23:57:25 +08:00
48 lines
1.0 KiB
C
48 lines
1.0 KiB
C
|
#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);
|
||
|
|
}
|