| /* |
| * Copyright 1999-2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /*************************************************************************** |
| * Description: Multi thread portability code for JK * |
| * Author: Gal Shachor <shachor@il.ibm.com> * |
| * Version: $Revision$ * |
| ***************************************************************************/ |
| |
| #ifndef _JK_MT_H |
| #define _JK_MT_H |
| |
| #include "jk_global.h" |
| |
| |
| #if defined(WIN32) |
| #define jk_gettid() ((int)GetCurrentThreadId()) |
| #elif defined(NETWARE) && !defined(__NOVELL_LIBC__) |
| #define getpid() ((int)GetThreadGroupID()) |
| #endif |
| |
| /* |
| * All WIN32 code is MT, UNIX code that uses pthreads is marked by the POSIX |
| * _REENTRANT define. |
| */ |
| #if defined (WIN32) || defined(_REENTRANT) || (defined(NETWARE) && defined(__NOVELL_LIBC__)) |
| #ifdef JK_PREFORK |
| #define _MT_CODE 0 |
| #else |
| #define _MT_CODE 1 |
| #endif |
| #else |
| #define _MT_CODE 0 |
| #endif |
| |
| /* |
| * Marks execution under MT compilation |
| */ |
| #if _MT_CODE |
| #ifdef WIN32 |
| #include <windows.h> |
| |
| typedef CRITICAL_SECTION JK_CRIT_SEC; |
| #define JK_INIT_CS(x, rc) InitializeCriticalSection(x); rc = JK_TRUE |
| #define JK_DELETE_CS(x, rc) DeleteCriticalSection(x); rc = JK_TRUE |
| #define JK_ENTER_CS(x, rc) EnterCriticalSection(x); rc = JK_TRUE |
| #define JK_LEAVE_CS(x, rc) LeaveCriticalSection(x); rc = JK_TRUE |
| |
| #else /* !WIN32 */ |
| #define _MT_CODE_PTHREAD |
| #include <pthread.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| typedef pthread_mutex_t JK_CRIT_SEC; |
| #define JK_INIT_CS(x, rc)\ |
| if(pthread_mutex_init(x, NULL)) rc = JK_FALSE; else rc = JK_TRUE |
| |
| #define JK_DELETE_CS(x, rc)\ |
| if(pthread_mutex_destroy(x)) rc = JK_FALSE; else rc = JK_TRUE |
| |
| #define JK_ENTER_CS(x, rc)\ |
| if(pthread_mutex_lock(x)) rc = JK_FALSE; else rc = JK_TRUE |
| |
| #define JK_LEAVE_CS(x, rc)\ |
| if(pthread_mutex_unlock(x)) rc = JK_FALSE; else rc = JK_TRUE |
| |
| int jk_gettid(void); |
| #endif /* WIN32 */ |
| |
| #else /* !_MT_CODE */ |
| |
| typedef void *JK_CRIT_SEC; |
| #define JK_INIT_CS(x, rc) rc = JK_TRUE |
| #define JK_DELETE_CS(x, rc) rc = JK_TRUE |
| #define JK_ENTER_CS(x, rc) rc = JK_TRUE |
| #define JK_LEAVE_CS(x, rc) rc = JK_TRUE |
| #define jk_gettid() 0 |
| #endif /* MT_CODE */ |
| |
| #if !defined(WIN32) && !defined(NETWARE) |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #if HAVE_FLOCK |
| #include <sys/file.h> |
| |
| #define JK_ENTER_LOCK(x, rc) \ |
| do { \ |
| while ((rc = flock((x), LOCK_EX) < 0) && (errno == EINTR)); \ |
| rc = rc == 0 ? JK_TRUE : JK_FALSE; \ |
| } while (0) |
| |
| #define JK_LEAVE_LOCK(x, rc) \ |
| do { \ |
| while ((rc = flock((x), LOCK_UN) < 0) && (errno == EINTR)); \ |
| rc = rc == 0 ? JK_TRUE : JK_FALSE; \ |
| } while (0) |
| |
| #else |
| |
| #define JK_ENTER_LOCK(x, rc) \ |
| do { \ |
| struct flock _fl; \ |
| _fl.l_type = F_WRLCK; \ |
| _fl.l_whence = SEEK_SET; \ |
| _fl.l_start = 0; \ |
| _fl.l_len = 1L; \ |
| _fl.l_pid = 0; \ |
| while ((rc = fcntl((x), F_SETLKW, &_fl) < 0) && (errno == EINTR)); \ |
| rc = rc == 0 ? JK_TRUE : JK_FALSE; \ |
| } while (0) |
| |
| #define JK_LEAVE_LOCK(x, rc) \ |
| do { \ |
| struct flock _fl; \ |
| _fl.l_type = F_UNLCK; \ |
| _fl.l_whence = SEEK_SET; \ |
| _fl.l_start = 0; \ |
| _fl.l_len = 1L; \ |
| _fl.l_pid = 0; \ |
| while ((rc = fcntl((x), F_SETLKW, &_fl) < 0) && (errno == EINTR)); \ |
| rc = rc == 0 ? JK_TRUE : JK_FALSE; \ |
| } while (0) |
| #endif /* HAVE_FLOCK */ |
| |
| #else /* WIN32 || NETWARE */ |
| #define JK_ENTER_LOCK(x, rc) rc = JK_TRUE |
| #define JK_LEAVE_LOCK(x, rc) rc = JK_TRUE |
| #endif |
| |
| #endif /* _JK_MT_H */ |