Move file and mmap information form Dictionary to BinaryDictionaryInfo.

Bug: 6669677
Change-Id: I05d435e0884430f8abbbed6ea2df775005ee8622

native/jni/com_android_inputmethod_latin_BinaryDictionary.cpp

@@ -53,22 +53,22 @@ static jlong latinime_BinaryDictionary_open(JNIEnv *env, jclass clazz, jstring s
     sourceDirChars[sourceDirUtf8Length] = '\0';
     int fd = 0;
     void *dictBuf = 0;
-    int adjust = 0;
+    int offset = 0;
     fd = open(sourceDirChars, O_RDONLY);
     if (fd < 0) {
         AKLOGE("DICT: Can't open sourceDir. sourceDirChars=%s errno=%d", sourceDirChars, errno);
         return 0;
     }
     int pagesize = getpagesize();
-    adjust = static_cast<int>(dictOffset) % pagesize;
+    offset = static_cast<int>(dictOffset) % pagesize;
-    int adjDictOffset = static_cast<int>(dictOffset) - adjust;
+    int adjDictOffset = static_cast<int>(dictOffset) - offset;
-    int adjDictSize = static_cast<int>(dictSize) + adjust;
+    int adjDictSize = static_cast<int>(dictSize) + offset;
     dictBuf = mmap(0, adjDictSize, PROT_READ, MAP_PRIVATE, fd, adjDictOffset);
     if (dictBuf == MAP_FAILED) {
         AKLOGE("DICT: Can't mmap dictionary. errno=%d", errno);
         return 0;
     }
-    dictBuf = static_cast<char *>(dictBuf) + adjust;
+    dictBuf = static_cast<char *>(dictBuf) + offset;
     if (!dictBuf) {
         AKLOGE("DICT: dictBuf is null");
         return 0;
@@ -78,9 +78,9 @@ static jlong latinime_BinaryDictionary_open(JNIEnv *env, jclass clazz, jstring s
             == BinaryDictionaryFormat::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) - adjust, adjDictSize, fd);
+        releaseDictBuf(static_cast<const char *>(dictBuf) - offset, adjDictSize, fd);
     } else {
-        dictionary = new Dictionary(dictBuf, static_cast<int>(dictSize), fd, adjust);
+        dictionary = new Dictionary(dictBuf, static_cast<int>(dictSize), fd, offset);
     }
     PROF_END(66);
     PROF_CLOSE;
@@ -221,10 +221,13 @@ static jint latinime_BinaryDictionary_editDistance(JNIEnv *env, jclass clazz, ji
 static void latinime_BinaryDictionary_close(JNIEnv *env, jclass clazz, jlong dict) {
     Dictionary *dictionary = reinterpret_cast<Dictionary *>(dict);
     if (!dictionary) return;
-    const void *dictBuf = dictionary->getBinaryDictionaryInfo()->getDictBuf();
+    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) - dictionary->getDictBufAdjust(),
+    releaseDictBuf(static_cast<const char *>(dictBuf) - dictBufOffset,
-            dictionary->getDictSize() + dictionary->getDictBufAdjust(), dictionary->getMmapFd());
+            binaryDictionaryInfo->getDictSize() + dictBufOffset,
+            binaryDictionaryInfo->getMmapFd());
     delete dictionary;
 }
 

native/jni/src/suggest/core/dictionary/binary_dictionary_info.h

@@ -29,15 +29,29 @@ class BinaryDictionaryHeader;
 
 class BinaryDictionaryInfo {
  public:
-    BinaryDictionaryInfo(const uint8_t *const dictBuf, const int dictSize)
+    BinaryDictionaryInfo(const uint8_t *const dictBuf, const int dictSize, const int mmapFd,
-            : mDictBuf(dictBuf),
+            const int dictBufOffset)
-              mDictionaryFormat(BinaryDictionaryFormat::detectFormatVersion(mDictBuf, dictSize)),
+            : mDictBuf(dictBuf), mDictSize(dictSize), mMmapFd(mmapFd),
+              mDictBufOffset(dictBufOffset),
+              mDictionaryFormat(BinaryDictionaryFormat::detectFormatVersion(mDictBuf, mDictSize)),
               mDictionaryHeader(this), mDictRoot(mDictBuf + mDictionaryHeader.getSize()) {}
 
     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 const uint8_t *getDictRoot() const {
         return mDictRoot;
     }
@@ -58,6 +72,9 @@ class BinaryDictionaryInfo {
     DISALLOW_COPY_AND_ASSIGN(BinaryDictionaryInfo);
 
     const uint8_t *const mDictBuf;
+    const int mDictSize;
+    const int mMmapFd;
+    const int mDictBufOffset;
     const BinaryDictionaryFormat::FORMAT_VERSION mDictionaryFormat;
     const BinaryDictionaryHeader mDictionaryHeader;
     const uint8_t *const mDictRoot;

native/jni/src/suggest/core/dictionary/dictionary.cpp

@@ -32,10 +32,9 @@
 
 namespace latinime {
 
-Dictionary::Dictionary(void *dict, int dictSize, int mmapFd, int dictBufAdjust)
+Dictionary::Dictionary(void *dict, int dictSize, int mmapFd, int dictBufOffset)
-        : mBinaryDictionaryInfo(static_cast<const uint8_t *>(dict), dictSize),
+        : mBinaryDictionaryInfo(
-          mDictSize(dictSize),
+                static_cast<const uint8_t *>(dict), dictSize, mmapFd, dictBufOffset),
-          mMmapFd(mmapFd), mDictBufAdjust(dictBufAdjust),
           mBigramDictionary(new BigramDictionary(&mBinaryDictionaryInfo)),
           mGestureSuggest(new Suggest(GestureSuggestPolicyFactory::getGestureSuggestPolicy())),
           mTypingSuggest(new Suggest(TypingSuggestPolicyFactory::getTypingSuggestPolicy())) {

native/jni/src/suggest/core/dictionary/dictionary.h

@@ -52,7 +52,7 @@ class Dictionary {
     static const int KIND_FLAG_POSSIBLY_OFFENSIVE = 0x80000000;
     static const int KIND_FLAG_EXACT_MATCH = 0x40000000;
 
-    Dictionary(void *dict, int dictSize, int mmapFd, int dictBufAdjust);
+    Dictionary(void *dict, int dictSize, int mmapFd, int dictBufOffset);
 
     int getSuggestions(ProximityInfo *proximityInfo, DicTraverseSession *traverseSession,
             int *xcoordinates, int *ycoordinates, int *times, int *pointerIds, int *inputCodePoints,
@@ -68,21 +68,12 @@ class Dictionary {
     const BinaryDictionaryInfo *getBinaryDictionaryInfo() const {
         return &mBinaryDictionaryInfo;
     }
-    int getDictSize() const { return mDictSize; }
-    int getMmapFd() const { return mMmapFd; }
-    int getDictBufAdjust() const { return mDictBufAdjust; }
     virtual ~Dictionary();
 
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(Dictionary);
 
     const BinaryDictionaryInfo mBinaryDictionaryInfo;
-    // Used only for the mmap version of dictionary loading, but we use these as dummy variables
-    // also for the malloc version.
-    const int mDictSize;
-    const int mMmapFd;
-    const int mDictBufAdjust;
-
     const BigramDictionary *mBigramDictionary;
     SuggestInterface *mGestureSuggest;
     SuggestInterface *mTypingSuggest;