You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@tomcat.apache.org by mt...@apache.org on 2002/07/08 09:43:52 UTC
cvs commit: jakarta-tomcat-connectors/jk/native2/server/isapi jk_iis_thread_pool.c
mturk 2002/07/08 00:43:51
Added: jk/native2/server/isapi jk_iis_thread_pool.c
Log:
IIS Thread pool.
Revision Changes Path
1.1 jakarta-tomcat-connectors/jk/native2/server/isapi/jk_iis_thread_pool.c
Index: jk_iis_thread_pool.c
===================================================================
/* ========================================================================= *
* *
* The Apache Software License, Version 1.1 *
* *
* Copyright (c) 1999-2002 The Apache Software Foundation. *
* All rights reserved. *
* *
* ========================================================================= *
* *
* Redistribution and use in source and binary forms, with or without modi- *
* fication, are permitted provided that the following conditions are met: *
* *
* 1. Redistributions of source code must retain the above copyright notice *
* notice, this list of conditions and the following disclaimer. *
* *
* 2. Redistributions in binary form must reproduce the above copyright *
* notice, this list of conditions and the following disclaimer in the *
* documentation and/or other materials provided with the distribution. *
* *
* 3. The end-user documentation included with the redistribution, if any, *
* must include the following acknowlegement: *
* *
* "This product includes software developed by the Apache Software *
* Foundation <http://www.apache.org/>." *
* *
* Alternately, this acknowlegement may appear in the software itself, if *
* and wherever such third-party acknowlegements normally appear. *
* *
* 4. The names "The Jakarta Project", "Jk", and "Apache Software *
* Foundation" must not be used to endorse or promote products derived *
* from this software without prior written permission. For written *
* permission, please contact <ap...@apache.org>. *
* *
* 5. Products derived from this software may not be called "Apache" nor may *
* "Apache" appear in their names without prior written permission of the *
* Apache Software Foundation. *
* *
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES *
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY *
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL *
* THE APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY *
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL *
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS *
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) *
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, *
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN *
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE *
* POSSIBILITY OF SUCH DAMAGE. *
* *
* ========================================================================= *
* *
* This software consists of voluntary contributions made by many indivi- *
* duals on behalf of the Apache Software Foundation. For more information *
* on the Apache Software Foundation, please see <http://www.apache.org/>. *
* *
* ========================================================================= */
/***************************************************************************
* Description: IIS Jk2 Thread Pool *
* Author: Mladen Turk <mt...@apache.org> *
* Version: $Revision: 1.1 $ *
***************************************************************************/
#define _WIN32_WINNT 0x0400
#include <httpext.h>
#include <httpfilt.h>
#include <wininet.h>
#include "jk_global.h"
#include "jk_requtil.h"
#include "jk_map.h"
#include "jk_pool.h"
#include "jk_logger.h"
#include "jk_env.h"
#include "jk_service.h"
#include "jk_worker.h"
#include "apr_general.h"
#include "jk_iis.h"
extern int use_thread_pool;
extern apr_pool_t *jk_globalPool;
typedef struct iis_thread_pool_t iis_thread_pool_t;
typedef struct iis_thread_t iis_thread_t;
struct iis_thread_pool_t {
HANDLE manager_port;
HANDLE manager_thread;
DWORD manager_id;
HANDLE worker_port;
int worker_threads;
int thread_count;
iis_thread_t **threads;
HANDLE *handles;
CRITICAL_SECTION cs;
apr_pool_t *pool;
};
struct iis_thread_t {
DWORD thread_id;
jk_ws_service_t service;
int busy;
};
static iis_thread_pool_t global_thread_pool = {0};
#define THREAD_POOL_SHUTDOWN ((OVERLAPPED *)0xFFFFFFFF)
#define THREAD_POOL_RECYCLE ((OVERLAPPED *)0xFFFFFFFE)
/* Manager service timeout 10 seconds */
#define MANAGER_TIMEOUT 10000
/* Timeout for threads shutdown 2 minutes */
#define SHUTDOWN_TIMEOUT 120000
DWORD WINAPI thread_pool_manager(void *p)
{
ULONG n1, n2;
OVERLAPPED *pOverLapped;
BOOL work = TRUE;
while (work) {
work = FALSE;
while (GetQueuedCompletionStatus(global_thread_pool.manager_port,
&n1, &n2, &pOverLapped,
MANAGER_TIMEOUT)) {
if (pOverLapped == THREAD_POOL_SHUTDOWN) {
break;
}
else {
/* XXX If something else received should be error */
}
}
if (GetLastError() == WAIT_TIMEOUT) {
/* XXX Dynamic management */
work = TRUE;
}
}
return 0;
}
DWORD WINAPI thread_worker(void *p)
{
ULONG n1, n2;
OVERLAPPED *pOverLapped;
iis_thread_t *thread = (iis_thread_t *)p;
while (GetQueuedCompletionStatus(global_thread_pool.worker_port,
&n1, &n2, &pOverLapped, INFINITE)) {
if (pOverLapped == THREAD_POOL_SHUTDOWN) {
break;
}
else if (pOverLapped == THREAD_POOL_RECYCLE) {
/* XXX Kill ourself, will be used for dynamic thread pool */
break;
}
else {
/* do the job */
LPEXTENSION_CONTROL_BLOCK lpEcb = (LPEXTENSION_CONTROL_BLOCK)n1;
InterlockedIncrement(&thread->busy);
HttpExtensionProcWorker(lpEcb, &thread->service);
InterlockedDecrement(&thread->busy);
}
}
return 0;
}
int jk2_iis_init_pool(jk_env_t *env)
{
int i, workers;
/* Do nothing if the thread pool is not used */
if (use_thread_pool <= 0)
return JK_OK;
else
workers = use_thread_pool;
global_thread_pool.worker_threads = workers;
apr_pool_create(&global_thread_pool.pool, jk_globalPool);
if (!global_thread_pool.pool) {
return JK_ERR;
}
global_thread_pool.threads = (iis_thread_t **)apr_palloc(
global_thread_pool.pool,
workers * sizeof(iis_thread_t *));
for (i = 0; i < workers; i++) {
global_thread_pool.threads[i] = (iis_thread_t *)apr_pcalloc(
global_thread_pool.pool,
workers * sizeof(iis_thread_t));
}
InitializeCriticalSection(&global_thread_pool.cs);
global_thread_pool.manager_port = CreateIoCompletionPort(
(HANDLE)INVALID_HANDLE_VALUE,
NULL,
0,
0);
/* Create the ThreadPool manager thread */
global_thread_pool.manager_thread = CreateThread(NULL,
0,
thread_pool_manager,
NULL,
0,
&global_thread_pool.manager_id);
/* Create the ThreadPool worker port */
global_thread_pool.worker_port = CreateIoCompletionPort(
(HANDLE)INVALID_HANDLE_VALUE,
NULL,
0,
0);
global_thread_pool.handles = (HANDLE *)apr_palloc(
global_thread_pool.pool,
workers * sizeof(HANDLE));
/* Start the worker threads */
for (i = 0; i < workers; i++) {
DWORD id;
global_thread_pool.handles[i] = CreateThread(NULL,
0,
thread_worker,
global_thread_pool.threads[i],
0,
&id);
global_thread_pool.threads[i]->thread_id = id;
}
return JK_OK;
}
int jk2_iis_close_pool(jk_env_t *env)
{
int i, workers ,rc;
/* Do nothing if the thread pool is not used */
if (use_thread_pool <= 0)
return JK_OK;
else
workers = use_thread_pool;
EnterCriticalSection(&global_thread_pool.cs);
PostQueuedCompletionStatus(global_thread_pool.manager_port,
(DWORD)0,
(DWORD)0,
THREAD_POOL_SHUTDOWN);
WaitForSingleObject(global_thread_pool.manager_port, INFINITE);
CloseHandle(global_thread_pool.manager_port);
CloseHandle(global_thread_pool.manager_thread);
/* Send shutdown event to each worker thread */
for (i = 0; i < workers; i++) {
PostQueuedCompletionStatus(global_thread_pool.worker_port,
(DWORD)0,
(DWORD)0,
THREAD_POOL_SHUTDOWN);
}
/* Wait for threads to die */
rc = WaitForMultipleObjects(workers,
global_thread_pool.handles,
TRUE,
SHUTDOWN_TIMEOUT);
CloseHandle(global_thread_pool.worker_port);
if (rc == WAIT_TIMEOUT) {
DWORD exitCode;
/* Terminate the threads that didn't respont to the shutdown event */
for (i = 0; i < workers; i++)
if (GetExitCodeThread(global_thread_pool.handles[i],
&exitCode) == STILL_ACTIVE)
TerminateThread(global_thread_pool.handles[i], -1);
}
LeaveCriticalSection(&global_thread_pool.cs);
DeleteCriticalSection(&global_thread_pool.cs);
return JK_OK;
}
int jk2_iis_thread_pool(LPEXTENSION_CONTROL_BLOCK lpEcb) {
return PostQueuedCompletionStatus(global_thread_pool.worker_port,
(DWORD)lpEcb,
(DWORD)0,
NULL);
}
--
To unsubscribe, e-mail: <ma...@jakarta.apache.org>
For additional commands, e-mail: <ma...@jakarta.apache.org>