The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* libs/pixelflinger/codeflinger/CodeCache.h |
| 2 | ** |
| 3 | ** Copyright 2006, 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 | |
| 19 | #ifndef ANDROID_CODECACHE_H |
| 20 | #define ANDROID_CODECACHE_H |
| 21 | |
| 22 | #include <stdint.h> |
| 23 | #include <pthread.h> |
| 24 | #include <sys/types.h> |
| 25 | |
Mathias Agopian | 006ba85 | 2009-06-01 15:27:46 -0700 | [diff] [blame] | 26 | #include "tinyutils/KeyedVector.h" |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 27 | #include "tinyutils/smartpointer.h" |
| 28 | |
| 29 | namespace android { |
| 30 | |
Mathias Agopian | 9857d99 | 2013-04-01 15:17:55 -0700 | [diff] [blame] | 31 | using namespace tinyutils; |
| 32 | |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 33 | // ---------------------------------------------------------------------------- |
| 34 | |
| 35 | class AssemblyKeyBase { |
| 36 | public: |
| 37 | virtual ~AssemblyKeyBase() { } |
| 38 | virtual int compare_type(const AssemblyKeyBase& key) const = 0; |
| 39 | }; |
| 40 | |
| 41 | template <typename T> |
| 42 | class AssemblyKey : public AssemblyKeyBase |
| 43 | { |
| 44 | public: |
| 45 | AssemblyKey(const T& rhs) : mKey(rhs) { } |
| 46 | virtual int compare_type(const AssemblyKeyBase& key) const { |
| 47 | const T& rhs = static_cast<const AssemblyKey&>(key).mKey; |
| 48 | return android::compare_type(mKey, rhs); |
| 49 | } |
| 50 | private: |
| 51 | T mKey; |
| 52 | }; |
| 53 | |
| 54 | // ---------------------------------------------------------------------------- |
| 55 | |
| 56 | class Assembly |
| 57 | { |
| 58 | public: |
| 59 | Assembly(size_t size); |
| 60 | virtual ~Assembly(); |
| 61 | |
| 62 | ssize_t size() const; |
| 63 | uint32_t* base() const; |
| 64 | ssize_t resize(size_t size); |
| 65 | |
| 66 | // protocol for sp<> |
| 67 | void incStrong(const void* id) const; |
| 68 | void decStrong(const void* id) const; |
| 69 | typedef void weakref_type; |
| 70 | |
| 71 | private: |
| 72 | mutable int32_t mCount; |
| 73 | uint32_t* mBase; |
Nick Kralevich | beeeee7 | 2010-05-06 15:05:52 -0700 | [diff] [blame] | 74 | size_t mSize; |
The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | // ---------------------------------------------------------------------------- |
| 78 | |
| 79 | class CodeCache |
| 80 | { |
| 81 | public: |
| 82 | // pretty simple cache API... |
| 83 | CodeCache(size_t size); |
| 84 | ~CodeCache(); |
| 85 | |
| 86 | sp<Assembly> lookup(const AssemblyKeyBase& key) const; |
| 87 | |
| 88 | int cache( const AssemblyKeyBase& key, |
| 89 | const sp<Assembly>& assembly); |
| 90 | |
| 91 | private: |
| 92 | // nothing to see here... |
| 93 | struct cache_entry_t { |
| 94 | inline cache_entry_t() { } |
| 95 | inline cache_entry_t(const sp<Assembly>& a, int64_t w) |
| 96 | : entry(a), when(w) { } |
| 97 | sp<Assembly> entry; |
| 98 | mutable int64_t when; |
| 99 | }; |
| 100 | |
| 101 | class key_t { |
| 102 | friend int compare_type( |
| 103 | const key_value_pair_t<key_t, cache_entry_t>&, |
| 104 | const key_value_pair_t<key_t, cache_entry_t>&); |
| 105 | const AssemblyKeyBase* mKey; |
| 106 | public: |
| 107 | key_t() { }; |
| 108 | key_t(const AssemblyKeyBase& k) : mKey(&k) { } |
| 109 | }; |
| 110 | |
| 111 | mutable pthread_mutex_t mLock; |
| 112 | mutable int64_t mWhen; |
| 113 | size_t mCacheSize; |
| 114 | size_t mCacheInUse; |
| 115 | KeyedVector<key_t, cache_entry_t> mCacheData; |
| 116 | |
| 117 | friend int compare_type( |
| 118 | const key_value_pair_t<key_t, cache_entry_t>&, |
| 119 | const key_value_pair_t<key_t, cache_entry_t>&); |
| 120 | }; |
| 121 | |
| 122 | // KeyedVector uses compare_type(), which is more efficient, than |
| 123 | // just using operator < () |
| 124 | inline int compare_type( |
| 125 | const key_value_pair_t<CodeCache::key_t, CodeCache::cache_entry_t>& lhs, |
| 126 | const key_value_pair_t<CodeCache::key_t, CodeCache::cache_entry_t>& rhs) |
| 127 | { |
| 128 | return lhs.key.mKey->compare_type(*(rhs.key.mKey)); |
| 129 | } |
| 130 | |
| 131 | // ---------------------------------------------------------------------------- |
| 132 | |
| 133 | }; // namespace android |
| 134 | |
| 135 | #endif //ANDROID_CODECACHE_H |