1 #pragma once 2 /* 3 * Copyright (C) 2016 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 struct private_handle_t; 18 19 /** 20 * Map the memory associated with hnd->fd or, if already mapped, increment 21 * its reference count. 22 */ 23 void* reference_region( 24 const char* op, const private_handle_t* hnd); 25 26 /** 27 * Decrement the reference count associated with hnd->fd, unmapping its 28 * memory iff the reference count reaches 0. 29 */ 30 int unreference_region(const char* op, const private_handle_t* hnd); 31
