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#include "syscall.h"
#include "pfs.h"
#include <random.h>
#include <stdio.h>
#include <string.h>
int main(void)
{
int i;
int pid[N_PROC];
char seed[R_BYTES];
int ret;
int len;
char pfswriter[50] = "pfs_writer a z ";
int fail = 0;
ret = open("random");
if (!ret) {
printf("Failed to open random.\n");
exit(-1);
}
read(ret, &seed[0], R_BYTES);
close(ret);
random_init((int)seed[0]);
len = strlen(pfswriter);
ret = create("file.1", BIG * TIMES);
if (!ret) {
printf("Failed to create file.1\n");
exit(-1);
}
for (i = 0; i < N_PROC; i++) {
if(random_ulong() % 2 == 0) {
pfswriter[len] = seed[i];
pfswriter[len + 1] = 0;
pid[i] = exec(pfswriter);
if (pid[i] < 0) {
printf("ERROR: Child creation returned %d\n", pid[i]);
fail = 1;
}
}
else {
pid[i] = exec("pfs_reader");
if (pid[i] < 0) {
printf("ERROR: Child creation returned %d\n", pid[i]);
fail = 1;
}
}
}
for (i = 0; i < N_PROC; i++)
{
ret = wait(pid[i]);
if (ret < 0) {
printf("ERROR: Child wait returned %d\n", ret);
fail = 1;
}
}
printf("Testing concurrent writers\n");
for (i =0; i < N_PROC; i++) {
pfswriter[len] = seed[i];
pfswriter[len + 1] = 0;
pid[i] = exec(pfswriter);
if (pid[i] < 0) {
printf("ERROR: Child creation returned %d\n", pid[i]);
fail = 1;
}
}
for (i = 0; i < N_PROC; i++)
{
ret = wait(pid[i]);
if (ret < 0) {
printf("ERROR: Child wait returned %d\n", ret);
fail = 1;
}
}
printf("Testing concurrent readers\n");
for (i =0; i < N_PROC; i++) {
pid[i] = exec("pfs_reader");
if (pid[i] < 0) {
printf("ERROR: Child creation returned %d\n", pid[i]);
fail = 1;
}
}
for (i = 0; i < N_PROC; i++)
{
ret = wait(pid[i]);
if (ret < 0) {
printf("ERROR: Child wait returned %d\n", ret);
fail = 1;
}
}
if (fail)
printf("Test failed!\n");
exit(0);
}
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