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611 lines
17 KiB
C
611 lines
17 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/***********************************************************************
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**
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** This server simulates a server running in loopback mode.
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**
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** The idea is that a single server is created. The server initially creates
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** a number of worker threads. Then, with the server running, a number of
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** clients are created which start requesting service from the server.
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**
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**
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** Modification History:
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** 19-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
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** The debug mode will print all of the printfs associated with this test.
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** The regress mode will be the default mode. Since the regress tool limits
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** the output to a one line status:PASS or FAIL,all of the printf statements
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** have been handled with an if (debug_mode) statement.
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***********************************************************************/
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/***********************************************************************
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** Includes
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***********************************************************************/
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/* Used to get the command line option */
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#include "plgetopt.h"
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#include "nspr.h"
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#include "pprthred.h"
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#include <string.h>
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#define PORT 15004
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#define THREAD_STACKSIZE 0
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#define PASS 0
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#define FAIL 1
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static int debug_mode = 0;
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static int _iterations = 1000;
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static int _clients = 1;
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static int _client_data = 250;
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static int _server_data = (8*1024);
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static PRThreadScope ServerScope, ClientScope;
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#define SERVER "Server"
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#define MAIN "Main"
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#define SERVER_STATE_STARTUP 0
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#define SERVER_STATE_READY 1
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#define SERVER_STATE_DYING 2
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#define SERVER_STATE_DEAD 4
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int ServerState;
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PRLock *ServerStateCVLock;
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PRCondVar *ServerStateCV;
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#undef DEBUGPRINTS
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#ifdef DEBUGPRINTS
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#define DPRINTF printf
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#else
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#define DPRINTF
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#endif
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/***********************************************************************
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** PRIVATE FUNCTION: Test_Result
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** DESCRIPTION: Used in conjunction with the regress tool, prints out the
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** status of the test case.
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** INPUTS: PASS/FAIL
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** OUTPUTS: None
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** RETURN: None
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** SIDE EFFECTS:
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**
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** RESTRICTIONS:
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** None
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** MEMORY: NA
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** ALGORITHM: Determine what the status is and print accordingly.
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**
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***********************************************************************/
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static void Test_Result (int result)
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{
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switch (result)
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{
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case PASS:
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printf ("PASS\n");
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break;
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case FAIL:
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printf ("FAIL\n");
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break;
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default:
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break;
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}
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}
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static void do_work(void);
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/* --- Server state functions --------------------------------------------- */
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void
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SetServerState(char *waiter, PRInt32 state)
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{
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PR_Lock(ServerStateCVLock);
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ServerState = state;
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PR_NotifyCondVar(ServerStateCV);
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if (debug_mode) DPRINTF("\t%s changed state to %d\n", waiter, state);
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PR_Unlock(ServerStateCVLock);
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}
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int
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WaitServerState(char *waiter, PRInt32 state)
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{
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PRInt32 rv;
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PR_Lock(ServerStateCVLock);
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if (debug_mode) DPRINTF("\t%s waiting for state %d\n", waiter, state);
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while(!(ServerState & state))
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PR_WaitCondVar(ServerStateCV, PR_INTERVAL_NO_TIMEOUT);
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rv = ServerState;
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if (debug_mode) DPRINTF("\t%s resuming from wait for state %d; state now %d\n",
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waiter, state, ServerState);
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PR_Unlock(ServerStateCVLock);
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return rv;
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}
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/* --- Server Functions ------------------------------------------- */
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PRLock *workerThreadsLock;
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PRInt32 workerThreads;
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PRInt32 workerThreadsBusy;
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void
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WorkerThreadFunc(void *_listenSock)
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{
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PRFileDesc *listenSock = (PRFileDesc *)_listenSock;
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PRInt32 bytesRead;
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PRInt32 bytesWritten;
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char *dataBuf;
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char *sendBuf;
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if (debug_mode) DPRINTF("\tServer buffer is %d bytes; %d data, %d netaddrs\n",
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_client_data+(2*sizeof(PRNetAddr))+32, _client_data, (2*sizeof(PRNetAddr))+32);
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dataBuf = (char *)PR_MALLOC(_client_data + 2*sizeof(PRNetAddr) + 32);
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if (!dataBuf)
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if (debug_mode) printf("\tServer could not malloc space!?\n");
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sendBuf = (char *)PR_MALLOC(_server_data *sizeof(char));
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if (!sendBuf)
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if (debug_mode) printf("\tServer could not malloc space!?\n");
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if (debug_mode) DPRINTF("\tServer worker thread running\n");
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while(1) {
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PRInt32 bytesToRead = _client_data;
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PRInt32 bytesToWrite = _server_data;
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PRFileDesc *newSock;
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PRNetAddr *rAddr;
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PRInt32 loops = 0;
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loops++;
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if (debug_mode) DPRINTF("\tServer thread going into accept\n");
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bytesRead = PR_AcceptRead(listenSock,
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&newSock,
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&rAddr,
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dataBuf,
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bytesToRead,
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PR_INTERVAL_NO_TIMEOUT);
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if (bytesRead < 0) {
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if (debug_mode) printf("\tServer error in accept (%d)\n", bytesRead);
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continue;
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}
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if (debug_mode) DPRINTF("\tServer accepted connection (%d bytes)\n", bytesRead);
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PR_AtomicIncrement(&workerThreadsBusy);
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#ifdef SYMBIAN
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if (workerThreadsBusy == workerThreads && workerThreads<1) {
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#else
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if (workerThreadsBusy == workerThreads) {
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#endif
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PR_Lock(workerThreadsLock);
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if (workerThreadsBusy == workerThreads) {
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PRThread *WorkerThread;
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WorkerThread = PR_CreateThread(
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PR_SYSTEM_THREAD,
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WorkerThreadFunc,
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listenSock,
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PR_PRIORITY_NORMAL,
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ServerScope,
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PR_UNJOINABLE_THREAD,
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THREAD_STACKSIZE);
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if (!WorkerThread) {
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if (debug_mode) printf("Error creating client thread %d\n", workerThreads);
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} else {
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PR_AtomicIncrement(&workerThreads);
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if (debug_mode) DPRINTF("\tServer creates worker (%d)\n", workerThreads);
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}
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}
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PR_Unlock(workerThreadsLock);
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}
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bytesToRead -= bytesRead;
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while (bytesToRead) {
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bytesRead = PR_Recv(newSock,
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dataBuf,
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bytesToRead,
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0,
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PR_INTERVAL_NO_TIMEOUT);
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if (bytesRead < 0) {
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if (debug_mode) printf("\tServer error receiving data (%d)\n", bytesRead);
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continue;
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}
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if (debug_mode) DPRINTF("\tServer received %d bytes\n", bytesRead);
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}
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bytesWritten = PR_Send(newSock,
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sendBuf,
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bytesToWrite,
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0,
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PR_INTERVAL_NO_TIMEOUT);
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if (bytesWritten != _server_data) {
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if (debug_mode) printf("\tError sending data to client (%d, %d)\n",
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bytesWritten, PR_GetOSError());
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} else {
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if (debug_mode) DPRINTF("\tServer sent %d bytes\n", bytesWritten);
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}
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PR_Close(newSock);
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PR_AtomicDecrement(&workerThreadsBusy);
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}
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}
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PRFileDesc *
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ServerSetup(void)
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{
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PRFileDesc *listenSocket;
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PRNetAddr serverAddr;
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PRThread *WorkerThread;
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if ( (listenSocket = PR_NewTCPSocket()) == NULL) {
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if (debug_mode) printf("\tServer error creating listen socket\n");
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else Test_Result(FAIL);
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return NULL;
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}
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memset(&serverAddr, 0, sizeof(PRNetAddr));
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serverAddr.inet.family = PR_AF_INET;
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serverAddr.inet.port = PR_htons(PORT);
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serverAddr.inet.ip = PR_htonl(PR_INADDR_ANY);
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if ( PR_Bind(listenSocket, &serverAddr) == PR_FAILURE) {
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if (debug_mode) printf("\tServer error binding to server address: OS error %d\n",
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PR_GetOSError());
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else Test_Result(FAIL);
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PR_Close(listenSocket);
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return NULL;
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}
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if ( PR_Listen(listenSocket, 128) == PR_FAILURE) {
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if (debug_mode) printf("\tServer error listening to server socket\n");
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else Test_Result(FAIL);
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PR_Close(listenSocket);
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return NULL;
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}
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/* Create Clients */
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workerThreads = 0;
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workerThreadsBusy = 0;
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workerThreadsLock = PR_NewLock();
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WorkerThread = PR_CreateThread(
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PR_SYSTEM_THREAD,
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WorkerThreadFunc,
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listenSocket,
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PR_PRIORITY_NORMAL,
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ServerScope,
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PR_UNJOINABLE_THREAD,
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THREAD_STACKSIZE);
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if (!WorkerThread) {
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if (debug_mode) printf("error creating working thread\n");
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PR_Close(listenSocket);
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return NULL;
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}
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PR_AtomicIncrement(&workerThreads);
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if (debug_mode) DPRINTF("\tServer created primordial worker thread\n");
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return listenSocket;
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}
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/* The main server loop */
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void
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ServerThreadFunc(void *unused)
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{
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PRFileDesc *listenSocket;
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/* Do setup */
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listenSocket = ServerSetup();
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if (!listenSocket) {
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SetServerState(SERVER, SERVER_STATE_DEAD);
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} else {
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if (debug_mode) DPRINTF("\tServer up\n");
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/* Tell clients they can start now. */
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SetServerState(SERVER, SERVER_STATE_READY);
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/* Now wait for server death signal */
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WaitServerState(SERVER, SERVER_STATE_DYING);
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/* Cleanup */
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SetServerState(SERVER, SERVER_STATE_DEAD);
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}
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}
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/* --- Client Functions ------------------------------------------- */
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PRInt32 numRequests;
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PRInt32 numClients;
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PRMonitor *clientMonitor;
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void
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ClientThreadFunc(void *unused)
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{
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PRNetAddr serverAddr;
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PRFileDesc *clientSocket;
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char *sendBuf;
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char *recvBuf;
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PRInt32 rv;
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PRInt32 bytesNeeded;
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sendBuf = (char *)PR_MALLOC(_client_data * sizeof(char));
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if (!sendBuf)
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if (debug_mode) printf("\tClient could not malloc space!?\n");
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recvBuf = (char *)PR_MALLOC(_server_data * sizeof(char));
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if (!recvBuf)
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if (debug_mode) printf("\tClient could not malloc space!?\n");
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memset(&serverAddr, 0, sizeof(PRNetAddr));
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serverAddr.inet.family = PR_AF_INET;
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serverAddr.inet.port = PR_htons(PORT);
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serverAddr.inet.ip = PR_htonl(PR_INADDR_LOOPBACK);
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while(numRequests > 0) {
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if ( (numRequests % 10) == 0 )
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if (debug_mode) printf(".");
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if (debug_mode) DPRINTF("\tClient starting request %d\n", numRequests);
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clientSocket = PR_NewTCPSocket();
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if (!clientSocket) {
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if (debug_mode) printf("Client error creating socket: OS error %d\n",
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PR_GetOSError());
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continue;
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}
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if (debug_mode) DPRINTF("\tClient connecting\n");
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rv = PR_Connect(clientSocket,
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&serverAddr,
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PR_INTERVAL_NO_TIMEOUT);
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if (!clientSocket) {
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if (debug_mode) printf("\tClient error connecting\n");
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continue;
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}
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if (debug_mode) DPRINTF("\tClient connected\n");
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rv = PR_Send(clientSocket,
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sendBuf,
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_client_data,
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0,
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PR_INTERVAL_NO_TIMEOUT);
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if (rv != _client_data) {
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if (debug_mode) printf("Client error sending data (%d)\n", rv);
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PR_Close(clientSocket);
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continue;
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}
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if (debug_mode) DPRINTF("\tClient sent %d bytes\n", rv);
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bytesNeeded = _server_data;
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while(bytesNeeded) {
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rv = PR_Recv(clientSocket,
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recvBuf,
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bytesNeeded,
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0,
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PR_INTERVAL_NO_TIMEOUT);
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if (rv <= 0) {
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if (debug_mode) printf("Client error receiving data (%d) (%d/%d)\n",
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rv, (_server_data - bytesNeeded), _server_data);
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break;
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}
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if (debug_mode) DPRINTF("\tClient received %d bytes; need %d more\n", rv, bytesNeeded - rv);
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bytesNeeded -= rv;
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}
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PR_Close(clientSocket);
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PR_AtomicDecrement(&numRequests);
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}
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PR_EnterMonitor(clientMonitor);
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--numClients;
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PR_Notify(clientMonitor);
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PR_ExitMonitor(clientMonitor);
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PR_DELETE(sendBuf);
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PR_DELETE(recvBuf);
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}
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void
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RunClients(void)
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{
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PRInt32 index;
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numRequests = _iterations;
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numClients = _clients;
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clientMonitor = PR_NewMonitor();
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for (index=0; index<_clients; index++) {
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PRThread *clientThread;
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clientThread = PR_CreateThread(
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PR_USER_THREAD,
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ClientThreadFunc,
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NULL,
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PR_PRIORITY_NORMAL,
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ClientScope,
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PR_UNJOINABLE_THREAD,
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THREAD_STACKSIZE);
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if (!clientThread) {
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if (debug_mode) printf("\terror creating client thread %d\n", index);
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} else
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if (debug_mode) DPRINTF("\tMain created client %d/%d\n", index+1, _clients);
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}
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PR_EnterMonitor(clientMonitor);
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while(numClients)
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PR_Wait(clientMonitor, PR_INTERVAL_NO_TIMEOUT);
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PR_ExitMonitor(clientMonitor);
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}
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/* --- Main Function ---------------------------------------------- */
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static
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void do_work()
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{
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PRThread *ServerThread;
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PRInt32 state;
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SetServerState(MAIN, SERVER_STATE_STARTUP);
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ServerThread = PR_CreateThread(
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PR_USER_THREAD,
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ServerThreadFunc,
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NULL,
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PR_PRIORITY_NORMAL,
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ServerScope,
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PR_JOINABLE_THREAD,
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THREAD_STACKSIZE);
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if (!ServerThread) {
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if (debug_mode) printf("error creating main server thread\n");
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return;
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}
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/* Wait for server to be ready */
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state = WaitServerState(MAIN, SERVER_STATE_READY|SERVER_STATE_DEAD);
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if (!(state & SERVER_STATE_DEAD)) {
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/* Run Test Clients */
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RunClients();
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/* Send death signal to server */
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SetServerState(MAIN, SERVER_STATE_DYING);
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}
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PR_JoinThread(ServerThread);
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}
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static void do_workUU(void)
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{
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ServerScope = PR_LOCAL_THREAD;
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ClientScope = PR_LOCAL_THREAD;
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do_work();
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}
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static void do_workUK(void)
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{
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ServerScope = PR_LOCAL_THREAD;
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ClientScope = PR_GLOBAL_THREAD;
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do_work();
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}
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static void do_workKU(void)
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{
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ServerScope = PR_GLOBAL_THREAD;
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ClientScope = PR_LOCAL_THREAD;
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do_work();
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}
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static void do_workKK(void)
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{
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ServerScope = PR_GLOBAL_THREAD;
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ClientScope = PR_GLOBAL_THREAD;
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do_work();
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}
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static void Measure(void (*func)(void), const char *msg)
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{
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PRIntervalTime start, stop;
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double d;
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start = PR_IntervalNow();
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(*func)();
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stop = PR_IntervalNow();
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d = (double)PR_IntervalToMicroseconds(stop - start);
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if (debug_mode) printf("\n%40s: %6.2f usec\n", msg, d / _iterations);
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}
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int main(int argc, char **argv)
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{
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/* The command line argument: -d is used to determine if the test is being run
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in debug mode. The regress tool requires only one line output:PASS or FAIL.
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All of the printfs associated with this test has been handled with a if (debug_mode)
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test.
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Usage: test_name -d
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*/
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PLOptStatus os;
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PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
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while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
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{
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if (PL_OPT_BAD == os) continue;
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switch (opt->option)
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{
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case 'd': /* debug mode */
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debug_mode = 1;
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break;
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default:
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break;
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}
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}
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PL_DestroyOptState(opt);
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|
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/* main test */
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#ifndef SYMBIAN
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if (debug_mode) {
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printf("Enter number of iterations: \n");
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scanf("%d", &_iterations);
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printf("Enter number of clients : \n");
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|
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
|
|
#endif
|
|
{
|
|
|
|
_iterations = 10;
|
|
_clients = 1;
|
|
_client_data = 10;
|
|
_server_data = 10;
|
|
}
|
|
|
|
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();
|
|
|
|
ServerStateCVLock = PR_NewLock();
|
|
ServerStateCV = PR_NewCondVar(ServerStateCVLock);
|
|
|
|
Measure(do_workUU, "server loop user/user");
|
|
#if 0
|
|
Measure(do_workUK, "server loop user/kernel");
|
|
Measure(do_workKU, "server loop kernel/user");
|
|
Measure(do_workKK, "server loop kernel/kernel");
|
|
#endif
|
|
|
|
PR_Cleanup();
|
|
|
|
return 0;
|
|
}
|