1 /* 2 This source code file is part of thread_mpi. 3 Written by Sander Pronk, Erik Lindahl, and possibly others. 4 5 Copyright (c) 2009, Sander Pronk, Erik Lindahl. 6 All rights reserved. 7 8 Redistribution and use in source and binary forms, with or without 9 modification, are permitted provided that the following conditions are met: 10 1) Redistributions of source code must retain the above copyright 11 notice, this list of conditions and the following disclaimer. 12 2) Redistributions in binary form must reproduce the above copyright 13 notice, this list of conditions and the following disclaimer in the 14 documentation and/or other materials provided with the distribution. 15 3) Neither the name of the copyright holders nor the 16 names of its contributors may be used to endorse or promote products 17 derived from this software without specific prior written permission. 18 19 THIS SOFTWARE IS PROVIDED BY US ''AS IS'' AND ANY 20 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 DISCLAIMED. IN NO EVENT SHALL WE BE LIABLE FOR ANY 23 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 24 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 25 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 26 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 30 If you want to redistribute modifications, please consider that 31 scientific software is very special. Version control is crucial - 32 bugs must be traceable. We will be happy to consider code for 33 inclusion in the official distribution, but derived work should not 34 be called official thread_mpi. Details are found in the README & COPYING 35 files. 36 */ 37 38 /* the types that were defined in include/thread_mpi/threads.h */ 39 40 41 struct tMPI_Thread 42 { 43 HANDLE th; /* the thread handle */ 44 DWORD id; /* the thread ID */ 45 int started_by_tmpi; /* whether this thread was started by tmpi */ 46 }; 47 48 struct tMPI_Thread_key 49 { 50 DWORD wkey; 51 }; 52 53 struct tMPI_Mutex 54 { 55 CRITICAL_SECTION cs; 56 }; 57 58 struct tMPI_Thread_once 59 { 60 int dum; 61 }; 62 63 struct tMPI_Thread_cond 64 { 65 #if 0 66 /* this works since Windows Vista: */ 67 CONDITION_VARIABLE cv; 68 #else 69 /* this data structure and its algorithms are based on 70 'Strategies for Implementing POSIX Condition Variables on Win32' 71 by 72 Douglas C. Schmidt and Irfan Pyarali 73 Department of Computer Science 74 Washington University, St. Louis, Missouri 75 http://www.cs.wustl.edu/~schmidt/win32-cv-1.html */ 76 int Nwaiters; /* number of waiting threads */ 77 CRITICAL_SECTION wtr_lock; /* lock for Nwaiters */ 78 int Nrelease; /* number of threads to release in broadcast/signal */ 79 int cycle; /* cycle number so threads can't steal signals */ 80 HANDLE ev; /* the event used to trigger WaitForSingleObject. 81 Is a manual reset event. */ 82 #endif 83 }; 84 85 struct tMPI_Thread_barrier 86 { 87 #if 0 88 /* use this once Vista is the oldest supported windows version: */ 89 CRITICAL_SECTION cs; /*!< Lock for the barrier 90 contents */ 91 CONDITION_VARIABLE cv; /*!< Condition to signal barrier 92 completion */ 93 #else 94 tMPI_Thread_mutex_t cs; /*!< Lock for the barrier contents */ 95 tMPI_Thread_cond_t cv; /*!< Condition to signal barrier completion */ 96 #endif 97 }; 98