00001 /******************************************************************************/ 00002 /* XrdFfsQueue.hh functions to run independent tasks in queue */ 00003 /* */ 00004 /* (c) 2010 by the Board of Trustees of the Leland Stanford, Jr., University */ 00005 /* All Rights Reserved */ 00006 /* Author: Wei Yang (SLAC National Accelerator Laboratory, 2009) */ 00007 /* Contract DE-AC02-76-SFO0515 with the Department of Energy */ 00008 /* */ 00009 /* This file is part of the XRootD software suite. */ 00010 /* */ 00011 /* XRootD is free software: you can redistribute it and/or modify it under */ 00012 /* the terms of the GNU Lesser General Public License as published by the */ 00013 /* Free Software Foundation, either version 3 of the License, or (at your */ 00014 /* option) any later version. */ 00015 /* */ 00016 /* XRootD is distributed in the hope that it will be useful, but WITHOUT */ 00017 /* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */ 00018 /* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */ 00019 /* License for more details. */ 00020 /* */ 00021 /* You should have received a copy of the GNU Lesser General Public License */ 00022 /* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */ 00023 /* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */ 00024 /* */ 00025 /* The copyright holder's institutional names and contributor's names may not */ 00026 /* be used to endorse or promote products derived from this software without */ 00027 /* specific prior written permission of the institution or contributor. */ 00028 /******************************************************************************/ 00029 00030 #ifdef __cplusplus 00031 extern "C" { 00032 #endif 00033 00034 #include <stdlib.h> 00035 #include <pthread.h> 00036 00037 struct XrdFfsQueueTasks { 00038 pthread_mutex_t mutex; 00039 pthread_cond_t cond; 00040 short done; 00041 void* (*func)(void*); 00042 void **args; 00043 00044 unsigned int id; 00045 struct XrdFfsQueueTasks *next; 00046 struct XrdFfsQueueTasks *prev; 00047 }; 00048 00049 struct XrdFfsQueueTasks* XrdFfsQueue_create_task(void* (*func)(void*), void **args, short initstat); 00050 void XrdFfsQueue_free_task(struct XrdFfsQueueTasks *task); 00051 void XrdFfsQueue_wait_task(struct XrdFfsQueueTasks *task); 00052 unsigned int XrdFfsQueue_count_tasks(); 00053 00054 int XrdFfsQueue_create_workers(int n); 00055 int XrdFfsQueue_remove_workers(int n); 00056 int XrdFfsQueue_count_workers(); 00057 00058 #ifdef __cplusplus 00059 } 00060 #endif 00061