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NdbThread.c
Package: mysql-4.1.16-win-src.zip [view]
Upload User: romrleung
Upload Date: 2022-05-23
Package Size: 18897k
Code Size: 3k
Category:
MySQL
Development Platform:
Visual C++
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #include <windows.h>
- #include <process.h>
- #include "NdbThread.h"
- #define MAX_THREAD_NAME 16
- typedef unsigned (WINAPI* NDB_WIN32_THREAD_FUNC)(void*);
- struct NdbThread
- {
- HANDLE hThread;
- unsigned nThreadId;
- char thread_name[MAX_THREAD_NAME];
- };
- struct NdbThread* NdbThread_Create(NDB_THREAD_FUNC *p_thread_func,
- NDB_THREAD_ARG *p_thread_arg,
- const NDB_THREAD_STACKSIZE thread_stack_size,
- const char* p_thread_name,
- NDB_THREAD_PRIO thread_prio)
- {
- struct NdbThread* tmpThread;
- unsigned initflag;
- int nPriority = 0;
- if(!p_thread_func)
- return 0;
- tmpThread = (struct NdbThread*)malloc(sizeof(struct NdbThread));
- if(!tmpThread)
- return 0;
- strncpy((char*)&tmpThread->thread_name, p_thread_name, MAX_THREAD_NAME);
- switch(thread_prio)
- {
- case NDB_THREAD_PRIO_HIGHEST: nPriority=THREAD_PRIORITY_HIGHEST; break;
- case NDB_THREAD_PRIO_HIGH: nPriority=THREAD_PRIORITY_ABOVE_NORMAL; break;
- case NDB_THREAD_PRIO_MEAN: nPriority=THREAD_PRIORITY_NORMAL; break;
- case NDB_THREAD_PRIO_LOW: nPriority=THREAD_PRIORITY_BELOW_NORMAL; break;
- case NDB_THREAD_PRIO_LOWEST: nPriority=THREAD_PRIORITY_LOWEST; break;
- }
- initflag = (nPriority ? CREATE_SUSPENDED : 0);
- tmpThread->hThread = (HANDLE)_beginthreadex(0, thread_stack_size,
- (NDB_WIN32_THREAD_FUNC)p_thread_func, p_thread_arg,
- initflag, &tmpThread->nThreadId);
- if(nPriority && tmpThread->hThread)
- {
- SetThreadPriority(tmpThread->hThread, nPriority);
- ResumeThread (tmpThread->hThread);
- }
- assert(tmpThread->hThread);
- return tmpThread;
- }
- void NdbThread_Destroy(struct NdbThread** p_thread)
- {
- CloseHandle((*p_thread)->hThread);
- (*p_thread)->hThread = 0;
- free(*p_thread);
- *p_thread = 0;
- }
- int NdbThread_WaitFor(struct NdbThread* p_wait_thread, void** status)
- {
- void *local_status = 0;
- if (status == 0)
- status = &local_status;
- if(WaitForSingleObject(p_wait_thread->hThread, INFINITE) == WAIT_OBJECT_0
- && GetExitCodeThread(p_wait_thread->hThread, (LPDWORD)status))
- {
- CloseHandle(p_wait_thread->hThread);
- p_wait_thread->hThread = 0;
- return 0;
- }
- return -1;
- }
- void NdbThread_Exit(int status)
- {
- _endthreadex((DWORD) status);
- }
- int NdbThread_SetConcurrencyLevel(int level)
- {
- return 0;
- }