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gecko-dev/nsprpub/pr/tests/servr_ku.c

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C
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/***********************************************************************
**
** This server simulates a server running in loopback mode.
**
** The idea is that a single server is created. The server initially creates
** a number of worker threads. Then, with the server running, a number of
** clients are created which start requesting service from the server.
**
**
** Modification History:
** 19-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
** The debug mode will print all of the printfs associated with this test.
** The regress mode will be the default mode. Since the regress tool limits
** the output to a one line status:PASS or FAIL,all of the printf statements
** have been handled with an if (debug_mode) statement.
** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
** recognize the return code from tha main program.
***********************************************************************/
/***********************************************************************
** Includes
***********************************************************************/
/* Used to get the command line option */
#include "plgetopt.h"
#include "nspr.h"
#include "pprthred.h"
#include <string.h>
#define PORT 15004
#define STACKSIZE 0
static int _iterations = 1000;
static int _clients = 1;
static int _client_data = 250;
static int _server_data = (8*1024);
static PRThreadScope ServerScope, ClientScope;
#define SERVER "Server"
#define MAIN "Main"
#define SERVER_STATE_STARTUP 0
#define SERVER_STATE_READY 1
#define SERVER_STATE_DYING 2
#define SERVER_STATE_DEAD 4
int ServerState;
PRLock *ServerStateCVLock;
PRCondVar *ServerStateCV;
#undef DEBUGPRINTS
#ifdef DEBUGPRINTS
#define DPRINTF printf
#else
#define DPRINTF
#endif
PRIntn failed_already=0;
PRIntn debug_mode;
static void do_work(void);
/* --- Server state functions --------------------------------------------- */
void
SetServerState(char *waiter, PRInt32 state)
{
PR_Lock(ServerStateCVLock);
ServerState = state;
PR_NotifyCondVar(ServerStateCV);
if (debug_mode) DPRINTF("\t%s changed state to %d\n", waiter, state);
PR_Unlock(ServerStateCVLock);
}
int
WaitServerState(char *waiter, PRInt32 state)
{
PRInt32 rv;
PR_Lock(ServerStateCVLock);
if (debug_mode) DPRINTF("\t%s waiting for state %d\n", waiter, state);
while(!(ServerState & state))
PR_WaitCondVar(ServerStateCV, PR_INTERVAL_NO_TIMEOUT);
rv = ServerState;
if (debug_mode) DPRINTF("\t%s resuming from wait for state %d; state now %d\n",
waiter, state, ServerState);
PR_Unlock(ServerStateCVLock);
return rv;
}
/* --- Server Functions ------------------------------------------- */
PRLock *workerThreadsLock;
PRInt32 workerThreads;
PRInt32 workerThreadsBusy;
void
WorkerThreadFunc(void *_listenSock)
{
PRFileDesc *listenSock = (PRFileDesc *)_listenSock;
PRInt32 bytesRead;
PRInt32 bytesWritten;
char *dataBuf;
char *sendBuf;
if (debug_mode) DPRINTF("\tServer buffer is %d bytes; %d data, %d netaddrs\n",
_client_data+(4*sizeof(PRNetAddr)), _client_data, (4*sizeof(PRNetAddr)));
dataBuf = (char *)PR_MALLOC(_client_data *sizeof(char) + 4*sizeof(PRNetAddr));
if (!dataBuf)
if (debug_mode) printf("\tServer could not malloc space!?\n");
sendBuf = (char *)PR_MALLOC(_server_data *sizeof(char));
if (!sendBuf)
if (debug_mode) printf("\tServer could not malloc space!?\n");
if (debug_mode) DPRINTF("\tServer worker thread running\n");
while(1) {
PRInt32 bytesToRead = _client_data;
PRInt32 bytesToWrite = _server_data;
PRFileDesc *newSock;
PRNetAddr *rAddr;
PRInt32 loops = 0;
loops++;
if (debug_mode) DPRINTF("\tServer thread going into accept\n");
bytesRead = PR_AcceptRead(listenSock,
&newSock,
&rAddr,
dataBuf,
bytesToRead,
PR_INTERVAL_NO_TIMEOUT);
if (bytesRead < 0) {
if (debug_mode) printf("\tServer error in accept (%d)\n", bytesRead);
continue;
}
if (debug_mode) DPRINTF("\tServer accepted connection (%d bytes)\n", bytesRead);
PR_AtomicIncrement(&workerThreadsBusy);
if (workerThreadsBusy == workerThreads) {
PR_Lock(workerThreadsLock);
if (workerThreadsBusy == workerThreads) {
PRThread *WorkerThread;
WorkerThread = PR_CreateThread(
PR_SYSTEM_THREAD,
WorkerThreadFunc,
listenSock,
PR_PRIORITY_NORMAL,
ServerScope,
PR_UNJOINABLE_THREAD,
STACKSIZE);
if (!WorkerThread)
if (debug_mode) printf("Error creating client thread %d\n", workerThreads);
else {
PR_AtomicIncrement(&workerThreads);
if (debug_mode) DPRINTF("\tServer creates worker (%d)\n", workerThreads);
}
}
PR_Unlock(workerThreadsLock);
}
bytesToRead -= bytesRead;
while (bytesToRead) {
bytesRead = PR_Recv(newSock,
dataBuf,
bytesToRead,
0,
PR_INTERVAL_NO_TIMEOUT);
if (bytesRead < 0) {
if (debug_mode) printf("\tServer error receiving data (%d)\n", bytesRead);
continue;
}
if (debug_mode) DPRINTF("\tServer received %d bytes\n", bytesRead);
}
bytesWritten = PR_Send(newSock,
sendBuf,
bytesToWrite,
0,
PR_INTERVAL_NO_TIMEOUT);
if (bytesWritten != _server_data)
if (debug_mode) printf("\tError sending data to client (%d, %d)\n",
bytesWritten, PR_GetOSError());
else
if (debug_mode) DPRINTF("\tServer sent %d bytes\n", bytesWritten);
PR_Close(newSock);
PR_AtomicDecrement(&workerThreadsBusy);
}
}
PRFileDesc *
ServerSetup(void)
{
PRFileDesc *listenSocket;
PRNetAddr serverAddr;
PRThread *WorkerThread;
if ( (listenSocket = PR_NewTCPSocket()) == NULL) {
if (debug_mode) printf("\tServer error creating listen socket\n");
else failed_already=1;
return NULL;
}
memset(&serverAddr, 0, sizeof(PRNetAddr));
serverAddr.inet.family = PR_AF_INET;
serverAddr.inet.port = PR_htons(PORT);
serverAddr.inet.ip = PR_htonl(PR_INADDR_ANY);
if ( PR_Bind(listenSocket, &serverAddr) == PR_FAILURE) {
if (debug_mode) printf("\tServer error binding to server address: OS error %d\n",
PR_GetOSError());
else failed_already=1;
PR_Close(listenSocket);
return NULL;
}
if ( PR_Listen(listenSocket, 128) == PR_FAILURE) {
if (debug_mode) printf("\tServer error listening to server socket\n");
else failed_already=1;
PR_Close(listenSocket);
return NULL;
}
/* Create Clients */
workerThreads = 0;
workerThreadsBusy = 0;
workerThreadsLock = PR_NewLock();
WorkerThread = PR_CreateThread(
PR_SYSTEM_THREAD,
WorkerThreadFunc,
listenSocket,
PR_PRIORITY_NORMAL,
ServerScope,
PR_UNJOINABLE_THREAD,
STACKSIZE);
if (!WorkerThread) {
if (debug_mode) printf("error creating working thread\n");
PR_Close(listenSocket);
return NULL;
}
PR_AtomicIncrement(&workerThreads);
if (debug_mode) DPRINTF("\tServer created primordial worker thread\n");
return listenSocket;
}
/* The main server loop */
void
ServerThreadFunc(void *unused)
{
PRFileDesc *listenSocket;
/* Do setup */
listenSocket = ServerSetup();
if (!listenSocket) {
SetServerState(SERVER, SERVER_STATE_DEAD);
} else {
if (debug_mode) DPRINTF("\tServer up\n");
/* Tell clients they can start now. */
SetServerState(SERVER, SERVER_STATE_READY);
/* Now wait for server death signal */
WaitServerState(SERVER, SERVER_STATE_DYING);
/* Cleanup */
SetServerState(SERVER, SERVER_STATE_DEAD);
}
}
/* --- Client Functions ------------------------------------------- */
PRInt32 numRequests;
PRInt32 numClients;
PRMonitor *clientMonitor;
void
ClientThreadFunc(void *unused)
{
PRNetAddr serverAddr;
PRFileDesc *clientSocket;
char *sendBuf;
char *recvBuf;
PRInt32 rv;
PRInt32 bytesNeeded;
sendBuf = (char *)PR_MALLOC(_client_data * sizeof(char));
if (!sendBuf)
if (debug_mode) printf("\tClient could not malloc space!?\n");
recvBuf = (char *)PR_MALLOC(_server_data * sizeof(char));
if (!recvBuf)
if (debug_mode) printf("\tClient could not malloc space!?\n");
memset(&serverAddr, 0, sizeof(PRNetAddr));
serverAddr.inet.family = PR_AF_INET;
serverAddr.inet.port = PR_htons(PORT);
serverAddr.inet.ip = PR_htonl(PR_INADDR_LOOPBACK);
while(numRequests > 0) {
if ( (numRequests % 10) == 0 )
if (debug_mode) printf(".");
if (debug_mode) DPRINTF("\tClient starting request %d\n", numRequests);
clientSocket = PR_NewTCPSocket();
if (!clientSocket) {
if (debug_mode) printf("Client error creating socket: OS error %d\n",
PR_GetOSError());
continue;
}
if (debug_mode) DPRINTF("\tClient connecting\n");
rv = PR_Connect(clientSocket,
&serverAddr,
PR_INTERVAL_NO_TIMEOUT);
if (!clientSocket) {
if (debug_mode) printf("\tClient error connecting\n");
continue;
}
if (debug_mode) DPRINTF("\tClient connected\n");
rv = PR_Send(clientSocket,
sendBuf,
_client_data,
0,
PR_INTERVAL_NO_TIMEOUT);
if (rv != _client_data) {
if (debug_mode) printf("Client error sending data (%d)\n", rv);
PR_Close(clientSocket);
continue;
}
if (debug_mode) DPRINTF("\tClient sent %d bytes\n", rv);
bytesNeeded = _server_data;
while(bytesNeeded) {
rv = PR_Recv(clientSocket,
recvBuf,
bytesNeeded,
0,
PR_INTERVAL_NO_TIMEOUT);
if (rv <= 0) {
if (debug_mode) printf("Client error receiving data (%d) (%d/%d)\n",
rv, (_server_data - bytesNeeded), _server_data);
break;
}
if (debug_mode) DPRINTF("\tClient received %d bytes; need %d more\n", rv, bytesNeeded - rv);
bytesNeeded -= rv;
}
PR_Close(clientSocket);
PR_AtomicDecrement(&numRequests);
}
PR_EnterMonitor(clientMonitor);
--numClients;
PR_Notify(clientMonitor);
PR_ExitMonitor(clientMonitor);
PR_DELETE(sendBuf);
PR_DELETE(recvBuf);
}
void
RunClients(void)
{
PRInt32 index;
numRequests = _iterations;
numClients = _clients;
clientMonitor = PR_NewMonitor();
for (index=0; index<_clients; index++) {
PRThread *clientThread;
clientThread = PR_CreateThread(
PR_USER_THREAD,
ClientThreadFunc,
NULL,
PR_PRIORITY_NORMAL,
ClientScope,
PR_UNJOINABLE_THREAD,
STACKSIZE);
if (!clientThread) {
if (debug_mode) printf("\terror creating client thread %d\n", index);
} else
if (debug_mode) DPRINTF("\tMain created client %d/%d\n", index+1, _clients);
}
PR_EnterMonitor(clientMonitor);
while(numClients)
PR_Wait(clientMonitor, PR_INTERVAL_NO_TIMEOUT);
PR_ExitMonitor(clientMonitor);
}
/* --- Main Function ---------------------------------------------- */
static
void do_work()
{
PRThread *ServerThread;
PRInt32 state;
SetServerState(MAIN, SERVER_STATE_STARTUP);
ServerThread = PR_CreateThread(
PR_USER_THREAD,
ServerThreadFunc,
NULL,
PR_PRIORITY_NORMAL,
ServerScope,
PR_JOINABLE_THREAD,
STACKSIZE);
if (!ServerThread) {
if (debug_mode) printf("error creating main server thread\n");
return;
}
/* Wait for server to be ready */
state = WaitServerState(MAIN, SERVER_STATE_READY|SERVER_STATE_DEAD);
if (!(state & SERVER_STATE_DEAD)) {
/* Run Test Clients */
RunClients();
/* Send death signal to server */
SetServerState(MAIN, SERVER_STATE_DYING);
}
PR_JoinThread(ServerThread);
}
static void do_workKU(void)
{
ServerScope = PR_GLOBAL_THREAD;
ClientScope = PR_LOCAL_THREAD;
do_work();
}
static void Measure(void (*func)(void), const char *msg)
{
PRIntervalTime start, stop;
double d;
start = PR_IntervalNow();
(*func)();
stop = PR_IntervalNow();
d = (double)PR_IntervalToMicroseconds(stop - start);
if (debug_mode) printf("\n%40s: %6.2f usec\n", msg, d / _iterations);
}
main(int argc, char **argv)
{
/* The command line argument: -d is used to determine if the test is being run
in debug mode. The regress tool requires only one line output:PASS or FAIL.
All of the printfs associated with this test has been handled with a if (debug_mode)
test.
Usage: test_name -d
*/
PLOptStatus os;
PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
{
if (PL_OPT_BAD == os) continue;
switch (opt->option)
{
case 'd': /* debug mode */
debug_mode = 1;
break;
default:
break;
}
}
PL_DestroyOptState(opt);
/* main test */
if (debug_mode) {
printf("Enter number of iterations: \n");
scanf("%d", &_iterations);
printf("Enter number of clients : \n");
scanf("%d", &_clients);
printf("Enter size of client data : \n");
scanf("%d", &_client_data);
printf("Enter size of server data : \n");
scanf("%d", &_server_data);
}
else {
_iterations = 7;
_clients = 7;
_client_data = 100;
_server_data = 100;
}
if (debug_mode) {
printf("\n\n%d iterations with %d client threads.\n",
_iterations, _clients);
printf("Sending %d bytes of client data and %d bytes of server data\n",
_client_data, _server_data);
}
PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
PR_STDIO_INIT();
PR_SetThreadRecycleMode(64);
ServerStateCVLock = PR_NewLock();
ServerStateCV = PR_NewCondVar(ServerStateCVLock);
Measure(do_workKU, "server loop kernel/user");
PR_Cleanup();
if(failed_already)
return 1;
else
return 0;
}
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