1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef GR_H_ 18 #define GR_H_ 19 20 #include <stdint.h> 21 #ifdef HAVE_ANDROID_OS // just want PAGE_SIZE define 22 # include <asm/page.h> 23 #else 24 # include <sys/user.h> 25 #endif 26 #include <limits.h> 27 #include <sys/cdefs.h> 28 #include <hardware/gralloc.h> 29 #include <pthread.h> 30 #include <errno.h> 31 32 #include <cutils/native_handle.h> 33 34 /*****************************************************************************/ 35 36 struct private_module_t; 37 struct private_handle_t; 38 roundUpToPageSize(size_t x)39inline size_t roundUpToPageSize(size_t x) { 40 return (x + (PAGE_SIZE-1)) & ~(PAGE_SIZE-1); 41 } 42 43 int mapFrameBufferLocked(struct private_module_t* module); 44 int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd); 45 46 /*****************************************************************************/ 47 48 class Locker { 49 pthread_mutex_t mutex; 50 public: 51 class Autolock { 52 Locker& locker; 53 public: Autolock(Locker & locker)54 inline Autolock(Locker& locker) : locker(locker) { locker.lock(); } ~Autolock()55 inline ~Autolock() { locker.unlock(); } 56 }; Locker()57 inline Locker() { pthread_mutex_init(&mutex, 0); } ~Locker()58 inline ~Locker() { pthread_mutex_destroy(&mutex); } lock()59 inline void lock() { pthread_mutex_lock(&mutex); } unlock()60 inline void unlock() { pthread_mutex_unlock(&mutex); } 61 }; 62 63 #endif /* GR_H_ */ 64