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test: pipes -- Add a second pipe

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Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
This commit is contained in:
Cyrill Gorcunov 2011-11-22 13:20:05 +04:00
parent 46083e9e00
commit 8ea8d4eee5
1 changed files with 31 additions and 8 deletions
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39
test/test-pipe-async.c
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@ -16,13 +16,14 @@ static void *map;
int main(int argc, char *argv[])
{
int pipefd[2];
int pipefd1[2];
int pipefd2[2];
pid_t pid;
printf("%s pid %d\n", argv[0], getpid());
if (pipe(pipefd)) {
perror("Can't create pipe");
if (pipe(pipefd1)) {
perror("Can't create pipe1");
return -1;
}
@ -32,15 +33,37 @@ int main(int argc, char *argv[])
return 1;
} else if (pid == 0) {
long buf;
while (read(pipefd[0], &buf, sizeof(buf)) > 0) {
printf("pipe-r: %08lx\n", buf);
sleep(2);
if (pipe(pipefd2)) {
perror("Can't create pipe2");
return -1;
}
pid = fork();
if (pid == -1) {
printf("fork failed\n");
return 1;
} else if (pid == 0) {
while (1) {
long buf;
read(pipefd1[0], &buf, sizeof(buf));
printf("pipe2-r: %08lx\n", buf);
sleep(1);
}
}
while (1) {
read(pipefd1[0], &buf, sizeof(buf));
printf("pipe1-r: %08lx\n", buf);
printf("pipe2-w: %08lx\n", buf);
write(pipefd2[1], &buf, sizeof(buf));
sleep(1);
}
} else {
long buf = 0;
while (1) {
printf("pipe-w: %08lx\n", buf);
write(pipefd[1], &buf, sizeof(buf));
printf("pipe1-w: %08lx\n", buf);
write(pipefd1[1], &buf, sizeof(buf));
sleep(1);
buf++;
}