nyancrimew
/
LatinIME
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

am 0663bc04: Merge "Remove BinaryDictionaryInfo and introduce MmapedBuffer." 

* commit '0663bc047b6023bc83c0218b3d36a65cce8d4dfc':
  Remove BinaryDictionaryInfo and introduce MmapedBuffer.
main
Keisuke Kuroyanagi 2013-08-15 02:37:49 -07:00 committed by Android Git Automerger
parent f180c9a250 0663bc047b
commit 89516296b3
10 changed files with 168 additions and 174 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp
View File

@ -18,42 +18,24 @@
#include "com_android_inputmethod_latin_BinaryDictionary.h"
#include <cerrno>
#include <cstring> // for memset()
#include <fcntl.h>
#include <sys/mman.h>
#include <unistd.h>
#include "defines.h"
#include "jni.h"
#include "jni_common.h"
#include "suggest/core/dictionary/binary_dictionary_info.h"
#include "suggest/core/dictionary/dictionary.h"
#include "suggest/core/suggest_options.h"
#include "suggest/policyimpl/dictionary/utils/format_utils.h"
#include "suggest/policyimpl/dictionary/dictionary_structure_with_buffer_policy_factory.h"
#include "utils/autocorrection_threshold_utils.h"
namespace latinime {
class ProximityInfo;
// Helper method
static void releaseDictBuf(const void *dictBuf, const size_t length, const int fd) {
int ret = munmap(const_cast<void *>(dictBuf), length);
if (ret != 0) {
AKLOGE("DICT: Failure in munmap. ret=%d errno=%d", ret, errno);
}
ret = close(fd);
if (ret != 0) {
AKLOGE("DICT: Failure in close. ret=%d errno=%d", ret, errno);
}
}
static jlong latinime_BinaryDictionary_open(JNIEnv *env, jclass clazz, jstring sourceDir,
jlong dictOffset, jlong dictSize, jboolean isUpdatable) {
PROF_OPEN;
PROF_START(66);
// TODO: Move dictionary buffer handling to policyimpl.
const jsize sourceDirUtf8Length = env->GetStringUTFLength(sourceDir);
if (sourceDirUtf8Length <= 0) {
AKLOGE("DICT: Can't get sourceDir string");
@ -62,41 +44,16 @@ static jlong latinime_BinaryDictionary_open(JNIEnv *env, jclass clazz, jstring s
char sourceDirChars[sourceDirUtf8Length + 1];
env->GetStringUTFRegion(sourceDir, 0, env->GetStringLength(sourceDir), sourceDirChars);
sourceDirChars[sourceDirUtf8Length] = '\0';
int fd = 0;
void *dictBuf = 0;
int offset = 0;
const bool updatableMmap = (isUpdatable == JNI_TRUE);
const int openMode = updatableMmap ? O_RDWR : O_RDONLY;
fd = open(sourceDirChars, openMode);
if (fd < 0) {
AKLOGE("DICT: Can't open sourceDir. sourceDirChars=%s errno=%d", sourceDirChars, errno);
DictionaryStructureWithBufferPolicy *const dictionaryStructureWithBufferPolicy =
DictionaryStructureWithBufferPolicyFactory::newDictionaryStructureWithBufferPolicy(
sourceDirChars, static_cast<int>(sourceDirUtf8Length),
static_cast<int>(dictOffset), static_cast<int>(dictSize),
isUpdatable == JNI_TRUE);
if (!dictionaryStructureWithBufferPolicy) {
return 0;
}
int pagesize = getpagesize();
offset = static_cast<int>(dictOffset) % pagesize;
int adjDictOffset = static_cast<int>(dictOffset) - offset;
int adjDictSize = static_cast<int>(dictSize) + offset;
const int protMode = updatableMmap ? PROT_READ | PROT_WRITE : PROT_READ;
dictBuf = mmap(0, adjDictSize, protMode, MAP_PRIVATE, fd, adjDictOffset);
if (dictBuf == MAP_FAILED) {
AKLOGE("DICT: Can't mmap dictionary. errno=%d", errno);
return 0;
}
dictBuf = static_cast<char *>(dictBuf) + offset;
if (!dictBuf) {
AKLOGE("DICT: dictBuf is null");
return 0;
}
Dictionary *dictionary = 0;
if (FormatUtils::UNKNOWN_VERSION
== FormatUtils::detectFormatVersion(static_cast<uint8_t *>(dictBuf),
static_cast<int>(dictSize))) {
AKLOGE("DICT: dictionary format is unknown, bad magic number");
releaseDictBuf(static_cast<const char *>(dictBuf) - offset, adjDictSize, fd);
} else {
dictionary = new Dictionary(env, dictBuf, static_cast<int>(dictSize), fd, offset,
updatableMmap);
}
Dictionary *const dictionary = new Dictionary(env, dictionaryStructureWithBufferPolicy);
PROF_END(66);
PROF_CLOSE;
return reinterpret_cast<jlong>(dictionary);
@ -105,13 +62,6 @@ static jlong latinime_BinaryDictionary_open(JNIEnv *env, jclass clazz, jstring s
static void latinime_BinaryDictionary_close(JNIEnv *env, jclass clazz, jlong dict) {
Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
if (!dictionary) return;
const BinaryDictionaryInfo *const binaryDictionaryInfo = dictionary->getBinaryDictionaryInfo();
const int dictBufOffset = binaryDictionaryInfo->getDictBufOffset();
const void *dictBuf = binaryDictionaryInfo->getDictBuf();
if (!dictBuf) return;
releaseDictBuf(static_cast<const char *>(dictBuf) - dictBufOffset,
binaryDictionaryInfo->getDictSize() + dictBufOffset,
binaryDictionaryInfo->getMmapFd());
delete dictionary;
}

65
native/jni/src/suggest/core/dictionary/binary_dictionary_info.h
View File

@ -1,65 +0,0 @@
/*
* Copyright (C) 2013, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LATINIME_BINARY_DICTIONARY_INFO_H
#define LATINIME_BINARY_DICTIONARY_INFO_H
#include <stdint.h>
#include "defines.h"
namespace latinime {
class BinaryDictionaryInfo {
public:
AK_FORCE_INLINE BinaryDictionaryInfo(const uint8_t *const dictBuf,
const int dictSize, const int mmapFd, const int dictBufOffset, const bool isUpdatable)
: mDictBuf(dictBuf), mDictSize(dictSize), mMmapFd(mmapFd),
mDictBufOffset(dictBufOffset), mIsUpdatable(isUpdatable) {}
~BinaryDictionaryInfo() {}
AK_FORCE_INLINE const uint8_t *getDictBuf() const {
return mDictBuf;
}
AK_FORCE_INLINE int getDictSize() const {
return mDictSize;
}
AK_FORCE_INLINE int getMmapFd() const {
return mMmapFd;
}
AK_FORCE_INLINE int getDictBufOffset() const {
return mDictBufOffset;
}
AK_FORCE_INLINE bool isDynamicallyUpdatable() const {
return mIsUpdatable;
}
private:
DISALLOW_COPY_AND_ASSIGN(BinaryDictionaryInfo);
const uint8_t *const mDictBuf;
const int mDictSize;
const int mMmapFd;
const int mDictBufOffset;
const bool mIsUpdatable;
};
}
#endif /* LATINIME_BINARY_DICTIONARY_INFO_H */

32
native/jni/src/suggest/core/dictionary/dictionary.cpp
View File

@ -23,23 +23,19 @@
#include "defines.h"
#include "suggest/core/dictionary/bigram_dictionary.h"
#include "suggest/core/policy/dictionary_header_structure_policy.h"
#include "suggest/core/policy/dictionary_structure_with_buffer_policy.h"
#include "suggest/core/session/dic_traverse_session.h"
#include "suggest/core/suggest.h"
#include "suggest/core/suggest_options.h"
#include "suggest/policyimpl/dictionary/dictionary_structure_with_buffer_policy_factory.h"
#include "suggest/policyimpl/gesture/gesture_suggest_policy_factory.h"
#include "suggest/policyimpl/typing/typing_suggest_policy_factory.h"
#include "utils/log_utils.h"
namespace latinime {
Dictionary::Dictionary(JNIEnv *env, void *dict, int dictSize, int mmapFd,
int dictBufOffset, bool isUpdatable)
: mBinaryDictionaryInfo(static_cast<const uint8_t *>(dict), dictSize, mmapFd,
dictBufOffset, isUpdatable),
mDictionaryStructureWithBufferPolicy(DictionaryStructureWithBufferPolicyFactory
::newDictionaryStructureWithBufferPolicy(
static_cast<const uint8_t *>(dict), dictSize)),
Dictionary::Dictionary(JNIEnv *env,
DictionaryStructureWithBufferPolicy *const dictionaryStructureWithBufferPolicy)
: mDictionaryStructureWithBufferPolicy(dictionaryStructureWithBufferPolicy),
mBigramDictionary(new BigramDictionary(mDictionaryStructureWithBufferPolicy)),
mGestureSuggest(new Suggest(GestureSuggestPolicyFactory::getGestureSuggestPolicy())),
mTypingSuggest(new Suggest(TypingSuggestPolicyFactory::getTypingSuggestPolicy())) {
@ -102,32 +98,17 @@ bool Dictionary::isValidBigram(const int *word0, int length0, const int *word1,
}
void Dictionary::addUnigramWord(const int *const word, const int length, const int probability) {
if (!mBinaryDictionaryInfo.isDynamicallyUpdatable()) {
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: Dictionary::addUnigramWord() is called for non-updatable dictionary.");
return;
}
mDictionaryStructureWithBufferPolicy->addUnigramWord(word, length, probability);
}
void Dictionary::addBigramWords(const int *const word0, const int length0, const int *const word1,
const int length1, const int probability) {
if (!mBinaryDictionaryInfo.isDynamicallyUpdatable()) {
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: Dictionary::addBigramWords() is called for non-updatable dictionary.");
return;
}
mDictionaryStructureWithBufferPolicy->addBigramWords(word0, length0, word1, length1,
probability);
}
void Dictionary::removeBigramWords(const int *const word0, const int length0,
const int *const word1, const int length1) {
if (!mBinaryDictionaryInfo.isDynamicallyUpdatable()) {
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: Dictionary::removeBigramWords() is called for non-updatable dictionary.");
return;
}
mDictionaryStructureWithBufferPolicy->removeBigramWords(word0, length0, word1, length1);
}
@ -155,9 +136,8 @@ void Dictionary::logDictionaryInfo(JNIEnv *const env) const {
dateStringCharBuffer, BUFFER_SIZE);
LogUtils::logToJava(env,
"Dictionary info: dictionary = %s ; version = %s ; date = %s ; filesize = %i",
dictionaryIdCharBuffer, versionStringCharBuffer, dateStringCharBuffer,
mBinaryDictionaryInfo.getDictSize());
"Dictionary info: dictionary = %s ; version = %s ; date = %s",
dictionaryIdCharBuffer, versionStringCharBuffer, dateStringCharBuffer);
}
} // namespace latinime

11
native/jni/src/suggest/core/dictionary/dictionary.h
View File

@ -21,7 +21,6 @@
#include "defines.h"
#include "jni.h"
#include "suggest/core/dictionary/binary_dictionary_info.h"
namespace latinime {
@ -54,8 +53,8 @@ class Dictionary {
static const int KIND_FLAG_POSSIBLY_OFFENSIVE = 0x80000000;
static const int KIND_FLAG_EXACT_MATCH = 0x40000000;
Dictionary(JNIEnv *env, void *dict, int dictSize, int mmapFd, int dictBufOffset,
bool isUpdatable);
Dictionary(JNIEnv *env,
DictionaryStructureWithBufferPolicy *const dictionaryStructureWithBufferPoilcy);
int getSuggestions(ProximityInfo *proximityInfo, DicTraverseSession *traverseSession,
int *xcoordinates, int *ycoordinates, int *times, int *pointerIds, int *inputCodePoints,
@ -78,11 +77,6 @@ class Dictionary {
void removeBigramWords(const int *const word0, const int length0, const int *const word1,
const int length1);
// TODO: Remove.
const BinaryDictionaryInfo *getBinaryDictionaryInfo() const {
return &mBinaryDictionaryInfo;
}
const DictionaryStructureWithBufferPolicy *getDictionaryStructurePolicy() const {
return mDictionaryStructureWithBufferPolicy;
}
@ -92,7 +86,6 @@ class Dictionary {
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(Dictionary);
const BinaryDictionaryInfo mBinaryDictionaryInfo;
DictionaryStructureWithBufferPolicy *const mDictionaryStructureWithBufferPolicy;
const BigramDictionary *const mBigramDictionary;
const SuggestInterface *const mGestureSuggest;

21
native/jni/src/suggest/policyimpl/dictionary/dictionary_structure_with_buffer_policy_factory.cpp
View File

@ -22,18 +22,29 @@
#include "suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.h"
#include "suggest/policyimpl/dictionary/patricia_trie_policy.h"
#include "suggest/policyimpl/dictionary/utils/format_utils.h"
#include "suggest/policyimpl/dictionary/utils/mmaped_buffer.h"
namespace latinime {
/* static */ DictionaryStructureWithBufferPolicy *DictionaryStructureWithBufferPolicyFactory
::newDictionaryStructureWithBufferPolicy(const uint8_t *const dictBuf,
const int dictSize) {
switch (FormatUtils::detectFormatVersion(dictBuf, dictSize)) {
::newDictionaryStructureWithBufferPolicy(const char *const path, const int pathLength,
const int bufOffset, const int size, const bool isUpdatable) {
// Allocated buffer in MmapedBuffer::openBuffer() will be freed in the destructor of
// impl classes of DictionaryStructureWithBufferPolicy.
const MmapedBuffer *const mmapedBuffer = MmapedBuffer::openBuffer(path, pathLength, bufOffset,
size, isUpdatable);
if (!mmapedBuffer) {
return 0;
}
switch (FormatUtils::detectFormatVersion(mmapedBuffer->getBuffer(),
mmapedBuffer->getBufferSize())) {
case FormatUtils::VERSION_2:
return new PatriciaTriePolicy(dictBuf);
return new PatriciaTriePolicy(mmapedBuffer);
case FormatUtils::VERSION_3:
return new DynamicPatriciaTriePolicy(dictBuf);
return new DynamicPatriciaTriePolicy(mmapedBuffer);
default:
AKLOGE("DICT: dictionary format is unknown, bad magic number");
delete mmapedBuffer;
ASSERT(false);
return 0;
}

3
native/jni/src/suggest/policyimpl/dictionary/dictionary_structure_with_buffer_policy_factory.h
View File

@ -27,7 +27,8 @@ namespace latinime {
class DictionaryStructureWithBufferPolicyFactory {
public:
static DictionaryStructureWithBufferPolicy *newDictionaryStructureWithBufferPolicy(
const uint8_t *const dictBuf, const int dictSize);
const char *const path, const int pathLength, const int bufOffset, const int size,
const bool isUpdatable);
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(DictionaryStructureWithBufferPolicyFactory);

12
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.cpp
View File

@ -233,18 +233,30 @@ int DynamicPatriciaTriePolicy::getBigramsPositionOfNode(const int nodePos) const
bool DynamicPatriciaTriePolicy::addUnigramWord(const int *const word, const int length,
const int probability) {
if (!mBuffer->isUpdatable()) {
AKLOGI("Warning: addUnigramWord() is called for non-updatable dictionary.");
return false;
}
// TODO: Implement.
return false;
}
bool DynamicPatriciaTriePolicy::addBigramWords(const int *const word0, const int length0,
const int *const word1, const int length1, const int probability) {
if (!mBuffer->isUpdatable()) {
AKLOGI("Warning: addBigramWords() is called for non-updatable dictionary.");
return false;
}
// TODO: Implement.
return false;
}
bool DynamicPatriciaTriePolicy::removeBigramWords(const int *const word0, const int length0,
const int *const word1, const int length1) {
if (!mBuffer->isUpdatable()) {
AKLOGI("Warning: removeBigramWords() is called for non-updatable dictionary.");
return false;
}
// TODO: Implement.
return false;
}

11
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.h
View File

@ -24,6 +24,7 @@
#include "suggest/policyimpl/dictionary/bigram/bigram_list_policy.h"
#include "suggest/policyimpl/dictionary/header/header_policy.h"
#include "suggest/policyimpl/dictionary/shortcut/shortcut_list_policy.h"
#include "suggest/policyimpl/dictionary/utils/mmaped_buffer.h"
namespace latinime {
@ -32,11 +33,14 @@ class DicNodeVector;
class DynamicPatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
public:
DynamicPatriciaTriePolicy(const uint8_t *const dictBuf)
: mHeaderPolicy(dictBuf), mDictRoot(dictBuf + mHeaderPolicy.getSize()),
DynamicPatriciaTriePolicy(const MmapedBuffer *const buffer)
: mBuffer(buffer), mHeaderPolicy(mBuffer->getBuffer()),
mDictRoot(mBuffer->getBuffer() + mHeaderPolicy.getSize()),
mBigramListPolicy(mDictRoot), mShortcutListPolicy(mDictRoot) {}
~DynamicPatriciaTriePolicy() {}
~DynamicPatriciaTriePolicy() {
delete mBuffer;
}
AK_FORCE_INLINE int getRootPosition() const {
return 0;
@ -82,6 +86,7 @@ class DynamicPatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
DISALLOW_IMPLICIT_CONSTRUCTORS(DynamicPatriciaTriePolicy);
static const int MAX_CHILD_COUNT_TO_AVOID_INFINITE_LOOP;
const MmapedBuffer *const mBuffer;
const HeaderPolicy mHeaderPolicy;
// TODO: Consolidate mDictRoot.
const uint8_t *const mDictRoot;

20
native/jni/src/suggest/policyimpl/dictionary/patricia_trie_policy.h
View File

@ -24,6 +24,7 @@
#include "suggest/policyimpl/dictionary/bigram/bigram_list_policy.h"
#include "suggest/policyimpl/dictionary/header/header_policy.h"
#include "suggest/policyimpl/dictionary/shortcut/shortcut_list_policy.h"
#include "suggest/policyimpl/dictionary/utils/mmaped_buffer.h"
namespace latinime {
@ -32,11 +33,14 @@ class DicNodeVector;
class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
public:
PatriciaTriePolicy(const uint8_t *const dictBuf)
: mHeaderPolicy(dictBuf), mDictRoot(dictBuf + mHeaderPolicy.getSize()),
PatriciaTriePolicy(const MmapedBuffer *const buffer)
: mBuffer(buffer), mHeaderPolicy(mBuffer->getBuffer()),
mDictRoot(mBuffer->getBuffer() + mHeaderPolicy.getSize()),
mBigramListPolicy(mDictRoot), mShortcutListPolicy(mDictRoot) {}
~PatriciaTriePolicy() {}
~PatriciaTriePolicy() {
delete mBuffer;
}
AK_FORCE_INLINE int getRootPosition() const {
return 0;
@ -71,25 +75,29 @@ class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
}
bool addUnigramWord(const int *const word, const int length, const int probability) {
// This dictionary format is not updatable.
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: addUnigramWord() is called for non-updatable dictionary.");
return false;
}
bool addBigramWords(const int *const word0, const int length0, const int *const word1,
const int length1, const int probability) {
// This dictionary format is not updatable.
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: addBigramWords() is called for non-updatable dictionary.");
return false;
}
bool removeBigramWords(const int *const word0, const int length0, const int *const word1,
const int length1) {
// This dictionary format is not updatable.
// This method should not be called for non-updatable dictionary.
AKLOGI("Warning: removeBigramWords() is called for non-updatable dictionary.");
return false;
}
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(PatriciaTriePolicy);
const MmapedBuffer *const mBuffer;
const HeaderPolicy mHeaderPolicy;
const uint8_t *const mDictRoot;
const BigramListPolicy mBigramListPolicy;

99
native/jni/src/suggest/policyimpl/dictionary/utils/mmaped_buffer.h Normal file
View File

@ -0,0 +1,99 @@
/*
* Copyright (C) 2013, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LATINIME_MMAPED_BUFFER_H
#define LATINIME_MMAPED_BUFFER_H
#include <cerrno>
#include <fcntl.h>
#include <stdint.h>
#include <sys/mman.h>
#include <unistd.h>
#include "defines.h"
namespace latinime {
class MmapedBuffer {
public:
static MmapedBuffer* openBuffer(const char *const path, const int pathLength,
const int bufOffset, const int size, const bool isUpdatable) {
const int openMode = isUpdatable ? O_RDWR : O_RDONLY;
const int fd = open(path, openMode);
if (fd < 0) {
AKLOGE("DICT: Can't open the source. path=%s errno=%d", path, errno);
return 0;
}
const int pagesize = getpagesize();
const int offset = bufOffset % pagesize;
int adjOffset = bufOffset - offset;
int adjSize = size + offset;
const int protMode = isUpdatable ? PROT_READ | PROT_WRITE : PROT_READ;
void *const mmapedBuffer = mmap(0, adjSize, protMode, MAP_PRIVATE, fd, adjOffset);
if (mmapedBuffer == MAP_FAILED) {
AKLOGE("DICT: Can't mmap dictionary. errno=%d", errno);
close(fd);
return 0;
}
uint8_t *const buffer = static_cast<uint8_t *>(mmapedBuffer) + bufOffset;
if (!buffer) {
AKLOGE("DICT: buffer is null");
close(fd);
return 0;
}
return new MmapedBuffer(buffer, adjSize, fd, adjOffset, isUpdatable);
}
~MmapedBuffer() {
int ret = munmap(static_cast<void *>(mBuffer - mBufferOffset),
mBufferSize + mBufferOffset);
if (ret != 0) {
AKLOGE("DICT: Failure in munmap. ret=%d errno=%d", ret, errno);
}
ret = close(mMmapFd);
if (ret != 0) {
AKLOGE("DICT: Failure in close. ret=%d errno=%d", ret, errno);
}
}
AK_FORCE_INLINE uint8_t *getBuffer() const {
return mBuffer;
}
AK_FORCE_INLINE int getBufferSize() const {
return mBufferSize;
}
AK_FORCE_INLINE bool isUpdatable() const {
return mIsUpdatable;
}
private:
AK_FORCE_INLINE MmapedBuffer(uint8_t *const buffer, const int bufferSize, const int mmapFd,
const int bufferOffset, const bool isUpdatable)
: mBuffer(buffer), mBufferSize(bufferSize), mMmapFd(mmapFd),
mBufferOffset(bufferOffset), mIsUpdatable(isUpdatable) {}
DISALLOW_IMPLICIT_CONSTRUCTORS(MmapedBuffer);
uint8_t *const mBuffer;
const int mBufferSize;
const int mMmapFd;
const int mBufferOffset;
const bool mIsUpdatable;
};
}
#endif /* LATINIME_MMAPED_BUFFER_H */