1 /****************************************************************************** 2 * 3 * Copyright (C) 2018 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 /*****************************************************************************/ 22 /* */ 23 /* File Name : osal_mbox.h */ 24 /* */ 25 /* Description : This file contains OSAL Mail box handle structure */ 26 /* definition. */ 27 /* */ 28 /* List of Functions : None */ 29 /* */ 30 /* Issues / Problems : None */ 31 /* */ 32 /* Revision History : */ 33 /* */ 34 /* DD MM YYYY Author(s) Changes (Describe the changes made) */ 35 /* 26 05 2006 Ittiam Draft */ 36 /* */ 37 /*****************************************************************************/ 38 39 #ifndef OSAL_MBOX_H 40 #define OSAL_MBOX_H 41 42 /*****************************************************************************/ 43 /* Constant Macros */ 44 /*****************************************************************************/ 45 46 /*****************************************************************************/ 47 /* Structures */ 48 /*****************************************************************************/ 49 50 /* Mail box handle structure. In WIN32 mail boxes are associated with each */ 51 /* Thread. So, thread id represents the mail box in question. In POSIX, name */ 52 /* distinguishs the mail boxes. */ 53 54 typedef struct 55 { 56 WORD32 mq_id; /* Message queue identifier */ 57 void *mmr_handle; /* Pointer to memory manager handle */ 58 osal_t *hdl; /* Associated OSAL handle */ 59 } mbox_handle_t; 60 61 typedef struct 62 { 63 void *mmr_handle; /* Pointer to memory manager handle */ 64 osal_t *hdl; /* Associated OSAL handle */ 65 66 void *count_sem; /* Semaphore to take care of get to an empty queue */ 67 void *sync_mutex; /* Mutex to maintain sync in post msg and get msg */ 68 void *data; /* msg posted or got from the queue */ 69 70 UWORD32 write_count; /* Post Count */ 71 UWORD32 read_count; /* Get Count */ 72 UWORD32 msg_size; /* Size of the msg */ 73 UWORD32 mbox_len; /* Max number of messages the mailbox can handle */ 74 } custom_mbox_handle_t; 75 76 #endif /* OSAL_MBOX_H */ 77