Nicolas Capens | 0bac285 | 2016-05-07 06:09:58 -0400 | [diff] [blame] | 1 | // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | #ifndef sw_Resource_hpp |
| 16 | #define sw_Resource_hpp |
| 17 | |
| 18 | #include "MutexLock.hpp" |
| 19 | |
| 20 | namespace sw |
| 21 | { |
| 22 | enum Accessor |
| 23 | { |
| 24 | PUBLIC, // Application/API access |
| 25 | PRIVATE, // Renderer access, shared by multiple threads if read-only |
| 26 | MANAGED, // Renderer access, shared read/write access if partitioned |
Nicolas Capens | bf7a814 | 2017-05-19 10:57:28 -0400 | [diff] [blame] | 27 | EXCLUSIVE |
Nicolas Capens | 0bac285 | 2016-05-07 06:09:58 -0400 | [diff] [blame] | 28 | }; |
| 29 | |
| 30 | class Resource |
| 31 | { |
| 32 | public: |
| 33 | Resource(size_t bytes); |
| 34 | |
| 35 | void destruct(); // Asynchronous destructor |
| 36 | |
| 37 | void *lock(Accessor claimer); |
| 38 | void *lock(Accessor relinquisher, Accessor claimer); |
| 39 | void unlock(); |
| 40 | void unlock(Accessor relinquisher); |
| 41 | |
| 42 | const void *data() const; |
| 43 | const size_t size; |
| 44 | |
| 45 | private: |
| 46 | ~Resource(); // Always call destruct() instead |
| 47 | |
Jorge E. Moreira | f8faed6 | 2016-12-02 17:03:54 -0800 | [diff] [blame] | 48 | MutexLock criticalSection; |
Nicolas Capens | 0bac285 | 2016-05-07 06:09:58 -0400 | [diff] [blame] | 49 | Event unblock; |
| 50 | volatile int blocked; |
| 51 | |
| 52 | volatile Accessor accessor; |
| 53 | volatile int count; |
| 54 | bool orphaned; |
| 55 | |
| 56 | void *buffer; |
| 57 | }; |
| 58 | } |
| 59 | |
| 60 | #endif // sw_Resource_hpp |