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Fix native crash by caused wrong munmap. 

Bug: 10402083
Change-Id: I5aa2cecd20cd3202c2326b1cbb6758257afd6d5d
main
Keisuke Kuroyanagi 2013-08-21 18:57:58 +09:00
parent 2c7a3e0405
commit a72a33388f
4 changed files with 37 additions and 34 deletions
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4
native/jni/src/suggest/policyimpl/dictionary/dictionary_structure_with_buffer_policy_factory.cpp
View File

@ -22,7 +22,7 @@
#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"
#include "suggest/policyimpl/dictionary/utils/mmapped_buffer.h"
namespace latinime {
@ -31,7 +31,7 @@ namespace latinime {
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,
const MmappedBuffer *const mmapedBuffer = MmappedBuffer::openBuffer(path, pathLength, bufOffset,
size, isUpdatable);
if (!mmapedBuffer) {
return 0;

6
native/jni/src/suggest/policyimpl/dictionary/dynamic_patricia_trie_policy.h
View File

@ -24,7 +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"
#include "suggest/policyimpl/dictionary/utils/mmapped_buffer.h"
namespace latinime {
@ -33,7 +33,7 @@ class DicNodeVector;
class DynamicPatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
public:
DynamicPatriciaTriePolicy(const MmapedBuffer *const buffer)
DynamicPatriciaTriePolicy(const MmappedBuffer *const buffer)
: mBuffer(buffer), mHeaderPolicy(mBuffer->getBuffer()),
mDictRoot(mBuffer->getBuffer() + mHeaderPolicy.getSize()),
mBigramListPolicy(mDictRoot), mShortcutListPolicy(mDictRoot) {}
@ -86,7 +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 MmappedBuffer *const mBuffer;
const HeaderPolicy mHeaderPolicy;
// TODO: Consolidate mDictRoot.
const uint8_t *const mDictRoot;

6
native/jni/src/suggest/policyimpl/dictionary/patricia_trie_policy.h
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@ -24,7 +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"
#include "suggest/policyimpl/dictionary/utils/mmapped_buffer.h"
namespace latinime {
@ -33,7 +33,7 @@ class DicNodeVector;
class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
public:
PatriciaTriePolicy(const MmapedBuffer *const buffer)
PatriciaTriePolicy(const MmappedBuffer *const buffer)
: mBuffer(buffer), mHeaderPolicy(mBuffer->getBuffer()),
mDictRoot(mBuffer->getBuffer() + mHeaderPolicy.getSize()),
mBigramListPolicy(mDictRoot), mShortcutListPolicy(mDictRoot) {}
@ -97,7 +97,7 @@ class PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
private:
DISALLOW_IMPLICIT_CONSTRUCTORS(PatriciaTriePolicy);
const MmapedBuffer *const mBuffer;
const MmappedBuffer *const mBuffer;
const HeaderPolicy mHeaderPolicy;
const uint8_t *const mDictRoot;
const BigramListPolicy mBigramListPolicy;

55
native/jni/src/suggest/policyimpl/dictionary/utils/mmaped_buffer.h → native/jni/src/suggest/policyimpl/dictionary/utils/mmapped_buffer.h
View File

@ -14,8 +14,8 @@
* limitations under the License.
*/
#ifndef LATINIME_MMAPED_BUFFER_H
#define LATINIME_MMAPED_BUFFER_H
#ifndef LATINIME_MMAPPED_BUFFER_H
#define LATINIME_MMAPPED_BUFFER_H
#include <cerrno>
#include <fcntl.h>
@ -27,39 +27,40 @@
namespace latinime {
class MmapedBuffer {
class MmappedBuffer {
public:
static MmapedBuffer* openBuffer(const char *const path, const int pathLength,
const int bufOffset, const int size, const bool isUpdatable) {
static MmappedBuffer* openBuffer(const char *const path, const int pathLength,
const int bufferOffset, const int bufferSize, const bool isUpdatable) {
const int openMode = isUpdatable ? O_RDWR : O_RDONLY;
const int fd = open(path, openMode);
if (fd < 0) {
const int mmapFd = open(path, openMode);
if (mmapFd < 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 offset = bufferOffset % pagesize;
int alignedOffset = bufferOffset - offset;
int alignedSize = bufferSize + 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) {
void *const mmappedBuffer = mmap(0, alignedSize, protMode, MAP_PRIVATE, mmapFd,
alignedOffset);
if (mmappedBuffer == MAP_FAILED) {
AKLOGE("DICT: Can't mmap dictionary. errno=%d", errno);
close(fd);
close(mmapFd);
return 0;
}
uint8_t *const buffer = static_cast<uint8_t *>(mmapedBuffer) + offset;
uint8_t *const buffer = static_cast<uint8_t *>(mmappedBuffer) + offset;
if (!buffer) {
AKLOGE("DICT: buffer is null");
close(fd);
close(mmapFd);
return 0;
}
return new MmapedBuffer(buffer, adjSize, fd, offset, isUpdatable);
return new MmappedBuffer(buffer, bufferSize, mmappedBuffer, alignedSize, mmapFd,
isUpdatable);
}
~MmapedBuffer() {
int ret = munmap(static_cast<void *>(mBuffer - mBufferOffset),
mBufferSize + mBufferOffset);
~MmappedBuffer() {
int ret = munmap(mMmappedBuffer, mAlignedSize);
if (ret != 0) {
AKLOGE("DICT: Failure in munmap. ret=%d errno=%d", ret, errno);
}
@ -82,18 +83,20 @@ class MmapedBuffer {
}
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) {}
AK_FORCE_INLINE MmappedBuffer(uint8_t *const buffer, const int bufferSize,
void *const mmappedBuffer, const int alignedSize, const int mmapFd,
const bool isUpdatable)
: mBuffer(buffer), mBufferSize(bufferSize), mMmappedBuffer(mmappedBuffer),
mAlignedSize(alignedSize), mMmapFd(mmapFd), mIsUpdatable(isUpdatable) {}
DISALLOW_IMPLICIT_CONSTRUCTORS(MmapedBuffer);
DISALLOW_IMPLICIT_CONSTRUCTORS(MmappedBuffer);
uint8_t *const mBuffer;
const int mBufferSize;
void *const mMmappedBuffer;
const int mAlignedSize;
const int mMmapFd;
const int mBufferOffset;
const bool mIsUpdatable;
};
}
#endif /* LATINIME_MMAPED_BUFFER_H */
#endif /* LATINIME_MMAPPED_BUFFER_H */