inc/user/comp_channel.h

   1 /*\r
   2  * Copyright (c) 2009 Intel Corp., Inc.  All rights reserved.\r
   3  *\r
   4  * This software is available to you under the OpenIB.org BSD license\r
   5  * below:\r
   6  *\r
   7  *     Redistribution and use in source and binary forms, with or\r
   8  *     without modification, are permitted provided that the following\r
   9  *     conditions are met:\r
  10  *\r
  11  *      - Redistributions of source code must retain the above\r
  12  *        copyright notice, this list of conditions and the following\r
  13  *        disclaimer.\r
  14  *\r
  15  *      - Redistributions in binary form must reproduce the above\r
  16  *        copyright notice, this list of conditions and the following\r
  17  *        disclaimer in the documentation and/or other materials\r
  18  *        provided with the distribution.\r
  19  *\r
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,\r
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\r
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AWV\r
  23  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS\r
  24  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN\r
  25  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r
  26  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\r
  27  * SOFTWARE.\r
  28  */\r
  29 \r
  30 #pragma once\r
  31 \r
  32 #ifndef COMP_CHANNEL_H\r
  33 #define COMP_CHANNEL_H\r
  34 \r
  35 #include <windows.h>\r
  36 #include <dlist.h>\r
  37 \r
  38 #ifdef __cplusplus\r
  39 extern "C" {\r
  40 #endif\r
  41 \r
  42 typedef struct _COMP_ENTRY\r
  43 {\r
  44         struct _COMP_ENTRY              *Next;\r
  45         DLIST_ENTRY                             MgrEntry;\r
  46         OVERLAPPED                              Overlap;\r
  47         struct _COMP_CHANNEL    *Channel;\r
  48         LONG volatile                   Busy;\r
  49 \r
  50 }       COMP_ENTRY;\r
  51 \r
  52 typedef struct _COMP_CHANNEL\r
  53 {\r
  54         struct _COMP_MANAGER    *Manager;\r
  55         COMP_ENTRY                              *Head;\r
  56         COMP_ENTRY                              **TailPtr;\r
  57         COMP_ENTRY                              Entry;\r
  58         HANDLE                                  Event;\r
  59         CRITICAL_SECTION                Lock;\r
  60         DWORD                                   Milliseconds;\r
  61 \r
  62 }       COMP_CHANNEL;\r
  63 \r
  64 typedef struct _COMP_MANAGER\r
  65 {\r
  66         HANDLE                                  CompQueue;\r
  67         DLIST_ENTRY                             DoneList;\r
  68         COMP_ENTRY                              Entry;\r
  69         HANDLE                                  Thread;\r
  70         BOOL                                    Run;\r
  71         HANDLE                                  Event;\r
  72         LONG volatile                   Busy;\r
  73         CRITICAL_SECTION                Lock;\r
  74 \r
  75 }       COMP_MANAGER;\r
  76 \r
  77 DWORD           CompManagerOpen(COMP_MANAGER *pMgr);\r
  78 void            CompManagerClose(COMP_MANAGER *pMgr);\r
  79 DWORD           CompManagerMonitor(COMP_MANAGER *pMgr, HANDLE hFile, ULONG_PTR Key);\r
  80 DWORD           CompManagerPoll(COMP_MANAGER *pMgr, DWORD Milliseconds,\r
  81                                                         COMP_CHANNEL **ppChannel);\r
  82 void            CompManagerCancel(COMP_MANAGER *pMgr);\r
  83 \r
  84 DWORD           CompChannelInit(COMP_MANAGER *pMgr, COMP_CHANNEL *pChannel,\r
  85                                                         DWORD Milliseconds);\r
  86 void            CompChannelCleanup(COMP_CHANNEL *pChannel);\r
  87 DWORD           CompChannelPoll(COMP_CHANNEL *pChannel, COMP_ENTRY **ppEntry);\r
  88 void            CompChannelCancel(COMP_CHANNEL *pChannel);\r
  89 \r
  90 void            CompEntryInit(COMP_CHANNEL *pChannel, COMP_ENTRY *pEntry);\r
  91 DWORD           CompEntryPost(COMP_ENTRY *pEntry);\r
  92 void            CompEntryCancel(COMP_ENTRY *pEntry);\r
  93 \r
  94 #ifdef __cplusplus\r
  95 }\r
  96 #endif\r
  97 \r
  98 #endif /* COMP_CHANNEL_H */\r