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authorMike Lockwood <lockwood@google.com>2013-10-03 10:30:18 -0700
committerMike Lockwood <lockwood@google.com>2013-10-03 10:30:18 -0700
commit84b6292c33d71b5739828d08aa8101d1954577f2 (patch)
treed39f8bbaf0f20fa086038741e117278bb67ba1b2 /include/androidfw/CursorWindow.h
parent92a6f3018ace5aa2d5ea74e7d378b6960b5e053e (diff)
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move libandroidfw to frameworks/native
Change-Id: Ic5b8a2742c7141156ab0f00ca29097bfe92bce60
Diffstat (limited to 'include/androidfw/CursorWindow.h')
-rw-r--r--include/androidfw/CursorWindow.h193
1 files changed, 0 insertions, 193 deletions
diff --git a/include/androidfw/CursorWindow.h b/include/androidfw/CursorWindow.h
deleted file mode 100644
index 8a2979a..0000000
--- a/include/androidfw/CursorWindow.h
+++ /dev/null
@@ -1,193 +0,0 @@
-/*
- * Copyright (C) 2006 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 _ANDROID__DATABASE_WINDOW_H
-#define _ANDROID__DATABASE_WINDOW_H
-
-#include <cutils/log.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#include <binder/Parcel.h>
-#include <utils/String8.h>
-
-#if LOG_NDEBUG
-
-#define IF_LOG_WINDOW() if (false)
-#define LOG_WINDOW(...)
-
-#else
-
-#define IF_LOG_WINDOW() IF_ALOG(LOG_DEBUG, "CursorWindow")
-#define LOG_WINDOW(...) ALOG(LOG_DEBUG, "CursorWindow", __VA_ARGS__)
-
-#endif
-
-namespace android {
-
-/**
- * This class stores a set of rows from a database in a buffer. The begining of the
- * window has first chunk of RowSlots, which are offsets to the row directory, followed by
- * an offset to the next chunk in a linked-list of additional chunk of RowSlots in case
- * the pre-allocated chunk isn't big enough to refer to all rows. Each row directory has a
- * FieldSlot per column, which has the size, offset, and type of the data for that field.
- * Note that the data types come from sqlite3.h.
- *
- * Strings are stored in UTF-8.
- */
-class CursorWindow {
- CursorWindow(const String8& name, int ashmemFd,
- void* data, size_t size, bool readOnly);
-
-public:
- /* Field types. */
- enum {
- FIELD_TYPE_NULL = 0,
- FIELD_TYPE_INTEGER = 1,
- FIELD_TYPE_FLOAT = 2,
- FIELD_TYPE_STRING = 3,
- FIELD_TYPE_BLOB = 4,
- };
-
- /* Opaque type that describes a field slot. */
- struct FieldSlot {
- private:
- int32_t type;
- union {
- double d;
- int64_t l;
- struct {
- uint32_t offset;
- uint32_t size;
- } buffer;
- } data;
-
- friend class CursorWindow;
- } __attribute((packed));
-
- ~CursorWindow();
-
- static status_t create(const String8& name, size_t size, CursorWindow** outCursorWindow);
- static status_t createFromParcel(Parcel* parcel, CursorWindow** outCursorWindow);
-
- status_t writeToParcel(Parcel* parcel);
-
- inline String8 name() { return mName; }
- inline size_t size() { return mSize; }
- inline size_t freeSpace() { return mSize - mHeader->freeOffset; }
- inline uint32_t getNumRows() { return mHeader->numRows; }
- inline uint32_t getNumColumns() { return mHeader->numColumns; }
-
- status_t clear();
- status_t setNumColumns(uint32_t numColumns);
-
- /**
- * Allocate a row slot and its directory.
- * The row is initialized will null entries for each field.
- */
- status_t allocRow();
- status_t freeLastRow();
-
- status_t putBlob(uint32_t row, uint32_t column, const void* value, size_t size);
- status_t putString(uint32_t row, uint32_t column, const char* value, size_t sizeIncludingNull);
- status_t putLong(uint32_t row, uint32_t column, int64_t value);
- status_t putDouble(uint32_t row, uint32_t column, double value);
- status_t putNull(uint32_t row, uint32_t column);
-
- /**
- * Gets the field slot at the specified row and column.
- * Returns null if the requested row or column is not in the window.
- */
- FieldSlot* getFieldSlot(uint32_t row, uint32_t column);
-
- inline int32_t getFieldSlotType(FieldSlot* fieldSlot) {
- return fieldSlot->type;
- }
-
- inline int64_t getFieldSlotValueLong(FieldSlot* fieldSlot) {
- return fieldSlot->data.l;
- }
-
- inline double getFieldSlotValueDouble(FieldSlot* fieldSlot) {
- return fieldSlot->data.d;
- }
-
- inline const char* getFieldSlotValueString(FieldSlot* fieldSlot,
- size_t* outSizeIncludingNull) {
- *outSizeIncludingNull = fieldSlot->data.buffer.size;
- return static_cast<char*>(offsetToPtr(fieldSlot->data.buffer.offset));
- }
-
- inline const void* getFieldSlotValueBlob(FieldSlot* fieldSlot, size_t* outSize) {
- *outSize = fieldSlot->data.buffer.size;
- return offsetToPtr(fieldSlot->data.buffer.offset);
- }
-
-private:
- static const size_t ROW_SLOT_CHUNK_NUM_ROWS = 100;
-
- struct Header {
- // Offset of the lowest unused byte in the window.
- uint32_t freeOffset;
-
- // Offset of the first row slot chunk.
- uint32_t firstChunkOffset;
-
- uint32_t numRows;
- uint32_t numColumns;
- };
-
- struct RowSlot {
- uint32_t offset;
- };
-
- struct RowSlotChunk {
- RowSlot slots[ROW_SLOT_CHUNK_NUM_ROWS];
- uint32_t nextChunkOffset;
- };
-
- String8 mName;
- int mAshmemFd;
- void* mData;
- size_t mSize;
- bool mReadOnly;
- Header* mHeader;
-
- inline void* offsetToPtr(uint32_t offset) {
- return static_cast<uint8_t*>(mData) + offset;
- }
-
- inline uint32_t offsetFromPtr(void* ptr) {
- return static_cast<uint8_t*>(ptr) - static_cast<uint8_t*>(mData);
- }
-
- /**
- * Allocate a portion of the window. Returns the offset
- * of the allocation, or 0 if there isn't enough space.
- * If aligned is true, the allocation gets 4 byte alignment.
- */
- uint32_t alloc(size_t size, bool aligned = false);
-
- RowSlot* getRowSlot(uint32_t row);
- RowSlot* allocRowSlot();
-
- status_t putBlobOrString(uint32_t row, uint32_t column,
- const void* value, size_t size, int32_t type);
-};
-
-}; // namespace android
-
-#endif