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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: fdcach.c
* Description:
* This test verifies that the fd cache and stack are working
* correctly.
*/
#include "nspr.h"
#include <stdio.h>
#include <stdlib.h>
/*
* Define ORDER_PRESERVED if the implementation of PR_SetFDCacheSize
* preserves the ordering of the fd's when moving them between the
* cache and the stack.
*/
#define ORDER_PRESERVED 1
/*
* NUM_FDS must be <= FD_CACHE_SIZE.
*/
#define FD_CACHE_SIZE 1024
#define NUM_FDS 20
int main(int argc, char **argv)
{
int i;
PRFileDesc *fds[NUM_FDS];
PRFileDesc *savefds[NUM_FDS];
int numfds = sizeof(fds)/sizeof(fds[0]);
/*
* Switch between cache and stack when they are empty.
* Then start with the fd cache.
*/
PR_SetFDCacheSize(0, FD_CACHE_SIZE);
PR_SetFDCacheSize(0, 0);
PR_SetFDCacheSize(0, FD_CACHE_SIZE);
/* Add some fd's to the fd cache. */
for (i = 0; i < numfds; i++) {
savefds[i] = PR_NewTCPSocket();
if (NULL == savefds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
}
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
/*
* Create some fd's. These fd's should come from
* the fd cache. Verify the FIFO ordering of the fd
* cache.
*/
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
if (fds[i] != savefds[i]) {
fprintf(stderr, "fd cache malfunctioned\n");
exit(1);
}
}
/* Put the fd's back to the fd cache. */
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
/* Switch to the fd stack. */
PR_SetFDCacheSize(0, 0);
/*
* Create some fd's. These fd's should come from
* the fd stack.
*/
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
#ifdef ORDER_PRESERVED
if (fds[i] != savefds[numfds-1-i]) {
fprintf(stderr, "fd stack malfunctioned\n");
exit(1);
}
#else
savefds[numfds-1-i] = fds[i];
#endif
}
/* Put the fd's back to the fd stack. */
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
/*
* Now create some fd's and verify the LIFO ordering of
* the fd stack.
*/
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
if (fds[i] != savefds[numfds-1-i]) {
fprintf(stderr, "fd stack malfunctioned\n");
exit(1);
}
}
/* Put the fd's back to the fd stack. */
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
/* Switch to the fd cache. */
PR_SetFDCacheSize(0, FD_CACHE_SIZE);
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
#ifdef ORDER_PRESERVED
if (fds[i] != savefds[i]) {
fprintf(stderr, "fd cache malfunctioned\n");
exit(1);
}
#else
savefds[i] = fds[i];
#endif
}
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
if (fds[i] != savefds[i]) {
fprintf(stderr, "fd cache malfunctioned\n");
exit(1);
}
}
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
/* Switch to the fd stack. */
PR_SetFDCacheSize(0, 0);
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
#ifdef ORDER_PRESERVED
if (fds[i] != savefds[numfds-1-i]) {
fprintf(stderr, "fd stack malfunctioned\n");
exit(1);
}
#else
savefds[numfds-1-i];
#endif
}
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
for (i = 0; i < numfds; i++) {
fds[i] = PR_NewTCPSocket();
if (NULL == fds[i]) {
fprintf(stderr, "PR_NewTCPSocket failed\n");
exit(1);
}
if (fds[i] != savefds[numfds-1-i]) {
fprintf(stderr, "fd stack malfunctioned\n");
exit(1);
}
}
for (i = 0; i < numfds; i++) {
if (PR_Close(savefds[i]) == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
}
PR_Cleanup();
printf("PASS\n");
return 0;
}
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