am 58bf986c: Merge "Use ashmem for CursorWindows. Bug: 5332296" into ics-mr0
* commit '58bf986c3e3948242e89654e6d59b97a21345582': Use ashmem for CursorWindows. Bug: 5332296
This commit is contained in:
Jeff Brown
Android Git Automerger
commit
d5e7d2793f
@ -21,18 +21,8 @@
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#include <stddef.h>
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#include <stdint.h>
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#include <binder/IMemory.h>
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#include <utils/RefBase.h>
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#define DEFAULT_WINDOW_SIZE 4096
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#define WINDOW_ALLOCATION_SIZE 4096
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#define ROW_SLOT_CHUNK_NUM_ROWS 16
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// Row slots are allocated in chunks of ROW_SLOT_CHUNK_NUM_ROWS,
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// with an offset after the rows that points to the next chunk
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#define ROW_SLOT_CHUNK_SIZE ((ROW_SLOT_CHUNK_NUM_ROWS * sizeof(row_slot_t)) + sizeof(uint32_t))
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#include <binder/Parcel.h>
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#include <utils/String8.h>
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#if LOG_NDEBUG
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@ -46,176 +36,157 @@
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#endif
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// When defined to true strings are stored as UTF8, otherwise they're UTF16
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#define WINDOW_STORAGE_UTF8 1
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// When defined to true numberic values are stored inline in the field_slot_t, otherwise they're allocated in the window
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#define WINDOW_STORAGE_INLINE_NUMERICS 1
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namespace android {
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typedef struct
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{
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uint32_t numRows;
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uint32_t numColumns;
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} window_header_t;
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typedef struct
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{
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uint32_t offset;
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} row_slot_t;
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typedef struct
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{
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uint8_t type;
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union {
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double d;
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int64_t l;
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struct {
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uint32_t offset;
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uint32_t size;
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} buffer;
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} data;
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} __attribute__((packed)) field_slot_t;
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#define FIELD_TYPE_NULL 0
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#define FIELD_TYPE_INTEGER 1
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#define FIELD_TYPE_FLOAT 2
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#define FIELD_TYPE_STRING 3
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#define FIELD_TYPE_BLOB 4
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/**
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* This class stores a set of rows from a database in a buffer. The begining of the
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* window has first chunk of row_slot_ts, which are offsets to the row directory, followed by
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* an offset to the next chunk in a linked-list of additional chunk of row_slot_ts in case
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* window has first chunk of RowSlots, which are offsets to the row directory, followed by
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* an offset to the next chunk in a linked-list of additional chunk of RowSlots in case
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* the pre-allocated chunk isn't big enough to refer to all rows. Each row directory has a
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* field_slot_t per column, which has the size, offset, and type of the data for that field.
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* FieldSlot per column, which has the size, offset, and type of the data for that field.
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* Note that the data types come from sqlite3.h.
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*
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* Strings are stored in UTF-8.
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*/
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class CursorWindow
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{
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class CursorWindow {
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CursorWindow(const String8& name, int ashmemFd,
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void* data, size_t size, bool readOnly);
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public:
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CursorWindow(size_t maxSize);
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CursorWindow(){}
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bool setMemory(const sp<IMemory>&);
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~CursorWindow();
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/* Field types. */
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enum {
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FIELD_TYPE_NULL = 0,
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FIELD_TYPE_INTEGER = 1,
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FIELD_TYPE_FLOAT = 2,
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FIELD_TYPE_STRING = 3,
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FIELD_TYPE_BLOB = 4,
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};
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bool initBuffer(bool localOnly);
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sp<IMemory> getMemory() {return mMemory;}
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/* Opaque type that describes a field slot. */
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struct FieldSlot {
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private:
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int32_t type;
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union {
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double d;
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int64_t l;
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struct {
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uint32_t offset;
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uint32_t size;
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} buffer;
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} data;
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size_t size() {return mSize;}
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uint8_t * data() {return mData;}
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uint32_t getNumRows() {return mHeader->numRows;}
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uint32_t getNumColumns() {return mHeader->numColumns;}
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void freeLastRow() {
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if (mHeader->numRows > 0) {
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mHeader->numRows--;
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}
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}
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bool setNumColumns(uint32_t numColumns)
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{
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uint32_t cur = mHeader->numColumns;
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if (cur > 0 && cur != numColumns) {
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LOGE("Trying to go from %d columns to %d", cur, numColumns);
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return false;
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}
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mHeader->numColumns = numColumns;
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return true;
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}
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friend class CursorWindow;
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} __attribute((packed));
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int32_t freeSpace();
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~CursorWindow();
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void clear();
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static status_t create(const String8& name, size_t size, bool localOnly,
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CursorWindow** outCursorWindow);
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static status_t createFromParcel(Parcel* parcel, CursorWindow** outCursorWindow);
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/**
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* Allocate a row slot and its directory. The returned
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* pointer points to the begining of the row's directory
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* or NULL if there wasn't room. The directory is
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* initialied with NULL entries for each field.
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*/
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field_slot_t * allocRow();
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status_t writeToParcel(Parcel* parcel);
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/**
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* Allocate a portion of the window. Returns the offset
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* of the allocation, or 0 if there isn't enough space.
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* If aligned is true, the allocation gets 4 byte alignment.
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*/
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uint32_t alloc(size_t size, bool aligned = false);
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inline String8 name() { return mName; }
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inline size_t size() { return mSize; }
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inline size_t freeSpace() { return mSize - mHeader->freeOffset; }
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inline uint32_t getNumRows() { return mHeader->numRows; }
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inline uint32_t getNumColumns() { return mHeader->numColumns; }
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/**
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* Copy data into the window at the given offset.
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*/
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void copyIn(uint32_t offset, uint8_t const * data, size_t size);
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void copyIn(uint32_t offset, int64_t data);
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void copyIn(uint32_t offset, double data);
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void copyOut(uint32_t offset, uint8_t * data, size_t size);
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int64_t copyOutLong(uint32_t offset);
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double copyOutDouble(uint32_t offset);
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bool putLong(unsigned int row, unsigned int col, int64_t value);
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bool putDouble(unsigned int row, unsigned int col, double value);
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bool putNull(unsigned int row, unsigned int col);
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bool getLong(unsigned int row, unsigned int col, int64_t * valueOut);
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bool getDouble(unsigned int row, unsigned int col, double * valueOut);
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bool getNull(unsigned int row, unsigned int col, bool * valueOut);
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uint8_t * offsetToPtr(uint32_t offset) {return mData + offset;}
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row_slot_t * allocRowSlot();
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row_slot_t * getRowSlot(int row);
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/**
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* return NULL if Failed to find rowSlot or
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* Invalid rowSlot
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*/
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field_slot_t * getFieldSlotWithCheck(int row, int column);
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field_slot_t * getFieldSlot(int row, int column)
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{
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int fieldDirOffset = getRowSlot(row)->offset;
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return ((field_slot_t *)offsetToPtr(fieldDirOffset)) + column;
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}
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int64_t getFieldSlotValueLong(field_slot_t* fieldSlot) {
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#if WINDOW_STORAGE_INLINE_NUMERICS
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return fieldSlot->data.l;
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#else
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return copyOutLong(fieldSlot->data.buffer.offset);
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#endif
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}
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double getFieldSlotValueDouble(field_slot_t* fieldSlot) {
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#if WINDOW_STORAGE_INLINE_NUMERICS
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return fieldSlot->data.d;
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#else
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return copyOutDouble(fieldSlot->data.buffer.offset);
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#endif
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}
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#if WINDOW_STORAGE_UTF8
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char* getFieldSlotValueString(field_slot_t* fieldSlot) {
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return reinterpret_cast<char*>(offsetToPtr(fieldSlot->data.buffer.offset));
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}
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#else
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char16_t* getFieldSlotValueString(field_slot_t* fieldSlot) {
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return reinterpret_cast<char16_t*>(offsetToPtr(fieldSlot->data.buffer.offset));
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}
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#endif
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private:
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uint8_t * mData;
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size_t mSize;
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size_t mMaxSize;
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window_header_t * mHeader;
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sp<IMemory> mMemory;
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status_t clear();
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status_t setNumColumns(uint32_t numColumns);
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/**
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* Offset of the lowest unused data byte in the array.
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* Allocate a row slot and its directory.
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* The row is initialized will null entries for each field.
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*/
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uint32_t mFreeOffset;
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status_t allocRow();
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status_t freeLastRow();
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status_t putBlob(uint32_t row, uint32_t column, const void* value, size_t size);
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status_t putString(uint32_t row, uint32_t column, const char* value, size_t sizeIncludingNull);
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status_t putLong(uint32_t row, uint32_t column, int64_t value);
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status_t putDouble(uint32_t row, uint32_t column, double value);
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status_t putNull(uint32_t row, uint32_t column);
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/**
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* Gets the field slot at the specified row and column.
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* Returns null if the requested row or column is not in the window.
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*/
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FieldSlot* getFieldSlot(uint32_t row, uint32_t column);
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inline int32_t getFieldSlotType(FieldSlot* fieldSlot) {
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return fieldSlot->type;
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}
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inline int64_t getFieldSlotValueLong(FieldSlot* fieldSlot) {
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return fieldSlot->data.l;
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}
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inline double getFieldSlotValueDouble(FieldSlot* fieldSlot) {
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return fieldSlot->data.d;
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}
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inline const char* getFieldSlotValueString(FieldSlot* fieldSlot,
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size_t* outSizeIncludingNull) {
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*outSizeIncludingNull = fieldSlot->data.buffer.size;
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return static_cast<char*>(offsetToPtr(fieldSlot->data.buffer.offset));
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}
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inline const void* getFieldSlotValueBlob(FieldSlot* fieldSlot, size_t* outSize) {
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*outSize = fieldSlot->data.buffer.size;
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return offsetToPtr(fieldSlot->data.buffer.offset);
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}
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private:
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static const size_t ROW_SLOT_CHUNK_NUM_ROWS = 100;
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struct Header {
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// Offset of the lowest unused byte in the window.
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uint32_t freeOffset;
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// Offset of the first row slot chunk.
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uint32_t firstChunkOffset;
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uint32_t numRows;
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uint32_t numColumns;
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};
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struct RowSlot {
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uint32_t offset;
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};
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struct RowSlotChunk {
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RowSlot slots[ROW_SLOT_CHUNK_NUM_ROWS];
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uint32_t nextChunkOffset;
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};
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String8 mName;
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int mAshmemFd;
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void* mData;
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size_t mSize;
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bool mReadOnly;
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Header* mHeader;
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inline void* offsetToPtr(uint32_t offset) {
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return static_cast<uint8_t*>(mData) + offset;
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}
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inline uint32_t offsetFromPtr(void* ptr) {
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return static_cast<uint8_t*>(ptr) - static_cast<uint8_t*>(mData);
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}
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/**
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* Allocate a portion of the window. Returns the offset
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* of the allocation, or 0 if there isn't enough space.
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* If aligned is true, the allocation gets 4 byte alignment.
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*/
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uint32_t alloc(size_t size, bool aligned = false);
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RowSlot* getRowSlot(uint32_t row);
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RowSlot* allocRowSlot();
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status_t putBlobOrString(uint32_t row, uint32_t column,
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const void* value, size_t size, int32_t type);
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};
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}; // namespace android
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@ -19,8 +19,9 @@
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#include <utils/Log.h>
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#include <binder/CursorWindow.h>
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#include <binder/MemoryHeapBase.h>
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#include <binder/MemoryBase.h>
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#include <cutils/ashmem.h>
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#include <sys/mman.h>
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#include <assert.h>
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#include <string.h>
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@ -28,350 +29,325 @@
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namespace android {
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CursorWindow::CursorWindow(size_t maxSize) :
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mMaxSize(maxSize)
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{
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CursorWindow::CursorWindow(const String8& name, int ashmemFd,
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void* data, size_t size, bool readOnly) :
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mName(name), mAshmemFd(ashmemFd), mData(data), mSize(size), mReadOnly(readOnly) {
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mHeader = static_cast<Header*>(mData);
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}
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bool CursorWindow::setMemory(const sp<IMemory>& memory)
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{
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mMemory = memory;
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mData = (uint8_t *) memory->pointer();
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if (mData == NULL) {
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return false;
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}
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mHeader = (window_header_t *) mData;
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// Make the window read-only
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ssize_t size = memory->size();
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mSize = size;
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mMaxSize = size;
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mFreeOffset = size;
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LOG_WINDOW("Created CursorWindow from existing IMemory: mFreeOffset = %d, numRows = %d, numColumns = %d, mSize = %d, mMaxSize = %d, mData = %p", mFreeOffset, mHeader->numRows, mHeader->numColumns, mSize, mMaxSize, mData);
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return true;
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CursorWindow::~CursorWindow() {
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::munmap(mData, mSize);
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::close(mAshmemFd);
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}
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bool CursorWindow::initBuffer(bool localOnly)
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{
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//TODO Use a non-memory dealer mmap region for localOnly
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status_t CursorWindow::create(const String8& name, size_t size, bool localOnly,
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CursorWindow** outCursorWindow) {
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String8 ashmemName("CursorWindow: ");
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ashmemName.append(name);
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ashmemName.append(localOnly ? " (local)" : " (remote)");
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sp<MemoryHeapBase> heap;
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heap = new MemoryHeapBase(mMaxSize, 0, "CursorWindow");
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if (heap != NULL) {
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mMemory = new MemoryBase(heap, 0, mMaxSize);
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if (mMemory != NULL) {
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mData = (uint8_t *) mMemory->pointer();
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if (mData) {
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mHeader = (window_header_t *) mData;
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mSize = mMaxSize;
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// Put the window into a clean state
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clear();
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LOG_WINDOW("Created CursorWindow with new MemoryDealer: mFreeOffset = %d, mSize = %d, mMaxSize = %d, mData = %p", mFreeOffset, mSize, mMaxSize, mData);
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return true;
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}
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}
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LOGE("CursorWindow heap allocation failed");
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return false;
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status_t result;
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int ashmemFd = ashmem_create_region(ashmemName.string(), size);
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if (ashmemFd < 0) {
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result = -errno;
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} else {
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LOGE("failed to create the CursorWindow heap");
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return false;
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result = ashmem_set_prot_region(ashmemFd, PROT_READ | PROT_WRITE);
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if (result >= 0) {
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void* data = ::mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, ashmemFd, 0);
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if (data == MAP_FAILED) {
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result = -errno;
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} else {
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result = ashmem_set_prot_region(ashmemFd, PROT_READ);
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if (result >= 0) {
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CursorWindow* window = new CursorWindow(name, ashmemFd,
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data, size, false /*readOnly*/);
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result = window->clear();
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if (!result) {
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LOG_WINDOW("Created new CursorWindow: freeOffset=%d, "
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"numRows=%d, numColumns=%d, mSize=%d, mData=%p",
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window->mHeader->freeOffset,
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window->mHeader->numRows,
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window->mHeader->numColumns,
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window->mSize, window->mData);
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*outCursorWindow = window;
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return OK;
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}
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delete window;
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}
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}
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::munmap(data, size);
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}
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::close(ashmemFd);
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}
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*outCursorWindow = NULL;
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return result;
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}
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||||
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CursorWindow::~CursorWindow()
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{
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// Everything that matters is a smart pointer
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status_t CursorWindow::createFromParcel(Parcel* parcel, CursorWindow** outCursorWindow) {
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String8 name = parcel->readString8();
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||||
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status_t result;
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int ashmemFd = parcel->readFileDescriptor();
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if (ashmemFd == int(BAD_TYPE)) {
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result = BAD_TYPE;
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} else {
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ssize_t size = ashmem_get_size_region(ashmemFd);
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if (size < 0) {
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result = UNKNOWN_ERROR;
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} else {
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int dupAshmemFd = ::dup(ashmemFd);
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if (dupAshmemFd < 0) {
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result = -errno;
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} else {
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void* data = ::mmap(NULL, size, PROT_READ, MAP_SHARED, dupAshmemFd, 0);
|
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if (data == MAP_FAILED) {
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result = -errno;
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} else {
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CursorWindow* window = new CursorWindow(name, dupAshmemFd,
|
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data, size, true /*readOnly*/);
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LOG_WINDOW("Created CursorWindow from parcel: freeOffset=%d, "
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"numRows=%d, numColumns=%d, mSize=%d, mData=%p",
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window->mHeader->freeOffset,
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window->mHeader->numRows,
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window->mHeader->numColumns,
|
||||
window->mSize, window->mData);
|
||||
*outCursorWindow = window;
|
||||
return OK;
|
||||
}
|
||||
::close(dupAshmemFd);
|
||||
}
|
||||
}
|
||||
}
|
||||
*outCursorWindow = NULL;
|
||||
return result;
|
||||
}
|
||||
|
||||
void CursorWindow::clear()
|
||||
{
|
||||
status_t CursorWindow::writeToParcel(Parcel* parcel) {
|
||||
status_t status = parcel->writeString8(mName);
|
||||
if (!status) {
|
||||
status = parcel->writeDupFileDescriptor(mAshmemFd);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
status_t CursorWindow::clear() {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
mHeader->freeOffset = sizeof(Header) + sizeof(RowSlotChunk);
|
||||
mHeader->firstChunkOffset = sizeof(Header);
|
||||
mHeader->numRows = 0;
|
||||
mHeader->numColumns = 0;
|
||||
mFreeOffset = sizeof(window_header_t) + ROW_SLOT_CHUNK_SIZE;
|
||||
// Mark the first chunk's next 'pointer' as null
|
||||
*((uint32_t *)(mData + mFreeOffset - sizeof(uint32_t))) = 0;
|
||||
|
||||
RowSlotChunk* firstChunk = static_cast<RowSlotChunk*>(offsetToPtr(mHeader->firstChunkOffset));
|
||||
firstChunk->nextChunkOffset = 0;
|
||||
return OK;
|
||||
}
|
||||
|
||||
int32_t CursorWindow::freeSpace()
|
||||
{
|
||||
int32_t freeSpace = mSize - mFreeOffset;
|
||||
if (freeSpace < 0) {
|
||||
freeSpace = 0;
|
||||
status_t CursorWindow::setNumColumns(uint32_t numColumns) {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
return freeSpace;
|
||||
|
||||
uint32_t cur = mHeader->numColumns;
|
||||
if ((cur > 0 || mHeader->numRows > 0) && cur != numColumns) {
|
||||
LOGE("Trying to go from %d columns to %d", cur, numColumns);
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
mHeader->numColumns = numColumns;
|
||||
return OK;
|
||||
}
|
||||
|
||||
field_slot_t * CursorWindow::allocRow()
|
||||
{
|
||||
status_t CursorWindow::allocRow() {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
// Fill in the row slot
|
||||
row_slot_t * rowSlot = allocRowSlot();
|
||||
RowSlot* rowSlot = allocRowSlot();
|
||||
if (rowSlot == NULL) {
|
||||
return NULL;
|
||||
return NO_MEMORY;
|
||||
}
|
||||
|
||||
// Allocate the slots for the field directory
|
||||
size_t fieldDirSize = mHeader->numColumns * sizeof(field_slot_t);
|
||||
uint32_t fieldDirOffset = alloc(fieldDirSize);
|
||||
size_t fieldDirSize = mHeader->numColumns * sizeof(FieldSlot);
|
||||
uint32_t fieldDirOffset = alloc(fieldDirSize, true /*aligned*/);
|
||||
if (!fieldDirOffset) {
|
||||
mHeader->numRows--;
|
||||
LOG_WINDOW("The row failed, so back out the new row accounting from allocRowSlot %d", mHeader->numRows);
|
||||
return NULL;
|
||||
LOG_WINDOW("The row failed, so back out the new row accounting "
|
||||
"from allocRowSlot %d", mHeader->numRows);
|
||||
return NO_MEMORY;
|
||||
}
|
||||
field_slot_t * fieldDir = (field_slot_t *)offsetToPtr(fieldDirOffset);
|
||||
memset(fieldDir, 0x0, fieldDirSize);
|
||||
FieldSlot* fieldDir = static_cast<FieldSlot*>(offsetToPtr(fieldDirOffset));
|
||||
memset(fieldDir, 0, fieldDirSize);
|
||||
|
||||
LOG_WINDOW("Allocated row %u, rowSlot is at offset %u, fieldDir is %d bytes at offset %u\n", (mHeader->numRows - 1), ((uint8_t *)rowSlot) - mData, fieldDirSize, fieldDirOffset);
|
||||
LOG_WINDOW("Allocated row %u, rowSlot is at offset %u, fieldDir is %d bytes at offset %u\n",
|
||||
mHeader->numRows - 1, offsetFromPtr(rowSlot), fieldDirSize, fieldDirOffset);
|
||||
rowSlot->offset = fieldDirOffset;
|
||||
|
||||
return fieldDir;
|
||||
return OK;
|
||||
}
|
||||
|
||||
uint32_t CursorWindow::alloc(size_t requestedSize, bool aligned)
|
||||
{
|
||||
int32_t size;
|
||||
status_t CursorWindow::freeLastRow() {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
if (mHeader->numRows > 0) {
|
||||
mHeader->numRows--;
|
||||
}
|
||||
return OK;
|
||||
}
|
||||
|
||||
uint32_t CursorWindow::alloc(size_t size, bool aligned) {
|
||||
uint32_t padding;
|
||||
if (aligned) {
|
||||
// 4 byte alignment
|
||||
padding = 4 - (mFreeOffset & 0x3);
|
||||
padding = (~mHeader->freeOffset + 1) & 3;
|
||||
} else {
|
||||
padding = 0;
|
||||
}
|
||||
|
||||
size = requestedSize + padding;
|
||||
|
||||
if (size > freeSpace()) {
|
||||
LOGV("need to grow: mSize = %d, size = %d, freeSpace() = %d, numRows = %d", mSize, size,
|
||||
freeSpace(), mHeader->numRows);
|
||||
// Only grow the window if the first row doesn't fit
|
||||
if (mHeader->numRows > 1) {
|
||||
LOGV("not growing since there are already %d row(s), max size %d", mHeader->numRows,
|
||||
mMaxSize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Find a new size that will fit the allocation
|
||||
int allocated = mSize - freeSpace();
|
||||
int newSize = mSize + WINDOW_ALLOCATION_SIZE;
|
||||
while (size > (newSize - allocated)) {
|
||||
newSize += WINDOW_ALLOCATION_SIZE;
|
||||
if (newSize > mMaxSize) {
|
||||
LOGE("Attempting to grow window beyond max size (%d)", mMaxSize);
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
LOG_WINDOW("found size %d", newSize);
|
||||
mSize = newSize;
|
||||
uint32_t offset = mHeader->freeOffset + padding;
|
||||
uint32_t nextFreeOffset = offset + size;
|
||||
if (nextFreeOffset > mSize) {
|
||||
LOGE("Window is full: requested allocation %d bytes, "
|
||||
"free space %d bytes, window size %d bytes",
|
||||
size, freeSpace(), mSize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
uint32_t offset = mFreeOffset + padding;
|
||||
mFreeOffset += size;
|
||||
mHeader->freeOffset = nextFreeOffset;
|
||||
return offset;
|
||||
}
|
||||
|
||||
row_slot_t * CursorWindow::getRowSlot(int row)
|
||||
{
|
||||
LOG_WINDOW("enter getRowSlot current row num %d, this row %d", mHeader->numRows, row);
|
||||
int chunkNum = row / ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
int chunkPos = row % ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
int chunkPtrOffset = sizeof(window_header_t) + ROW_SLOT_CHUNK_SIZE - sizeof(uint32_t);
|
||||
uint8_t * rowChunk = mData + sizeof(window_header_t);
|
||||
for (int i = 0; i < chunkNum; i++) {
|
||||
rowChunk = offsetToPtr(*((uint32_t *)(mData + chunkPtrOffset)));
|
||||
chunkPtrOffset = rowChunk - mData + (ROW_SLOT_CHUNK_NUM_ROWS * sizeof(row_slot_t));
|
||||
CursorWindow::RowSlot* CursorWindow::getRowSlot(uint32_t row) {
|
||||
uint32_t chunkPos = row;
|
||||
RowSlotChunk* chunk = static_cast<RowSlotChunk*>(
|
||||
offsetToPtr(mHeader->firstChunkOffset));
|
||||
while (chunkPos >= ROW_SLOT_CHUNK_NUM_ROWS) {
|
||||
chunk = static_cast<RowSlotChunk*>(offsetToPtr(chunk->nextChunkOffset));
|
||||
chunkPos -= ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
}
|
||||
return (row_slot_t *)(rowChunk + (chunkPos * sizeof(row_slot_t)));
|
||||
LOG_WINDOW("exit getRowSlot current row num %d, this row %d", mHeader->numRows, row);
|
||||
return &chunk->slots[chunkPos];
|
||||
}
|
||||
|
||||
row_slot_t * CursorWindow::allocRowSlot()
|
||||
{
|
||||
int chunkNum = mHeader->numRows / ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
int chunkPos = mHeader->numRows % ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
int chunkPtrOffset = sizeof(window_header_t) + ROW_SLOT_CHUNK_SIZE - sizeof(uint32_t);
|
||||
uint8_t * rowChunk = mData + sizeof(window_header_t);
|
||||
LOG_WINDOW("Allocating row slot, mHeader->numRows is %d, chunkNum is %d, chunkPos is %d", mHeader->numRows, chunkNum, chunkPos);
|
||||
for (int i = 0; i < chunkNum; i++) {
|
||||
uint32_t nextChunkOffset = *((uint32_t *)(mData + chunkPtrOffset));
|
||||
LOG_WINDOW("nextChunkOffset is %d", nextChunkOffset);
|
||||
if (nextChunkOffset == 0) {
|
||||
// Allocate a new row chunk
|
||||
nextChunkOffset = alloc(ROW_SLOT_CHUNK_SIZE, true);
|
||||
if (nextChunkOffset == 0) {
|
||||
CursorWindow::RowSlot* CursorWindow::allocRowSlot() {
|
||||
uint32_t chunkPos = mHeader->numRows;
|
||||
RowSlotChunk* chunk = static_cast<RowSlotChunk*>(
|
||||
offsetToPtr(mHeader->firstChunkOffset));
|
||||
while (chunkPos > ROW_SLOT_CHUNK_NUM_ROWS) {
|
||||
chunk = static_cast<RowSlotChunk*>(offsetToPtr(chunk->nextChunkOffset));
|
||||
chunkPos -= ROW_SLOT_CHUNK_NUM_ROWS;
|
||||
}
|
||||
if (chunkPos == ROW_SLOT_CHUNK_NUM_ROWS) {
|
||||
if (!chunk->nextChunkOffset) {
|
||||
chunk->nextChunkOffset = alloc(sizeof(RowSlotChunk), true /*aligned*/);
|
||||
if (!chunk->nextChunkOffset) {
|
||||
return NULL;
|
||||
}
|
||||
rowChunk = offsetToPtr(nextChunkOffset);
|
||||
LOG_WINDOW("allocated new chunk at %d, rowChunk = %p", nextChunkOffset, rowChunk);
|
||||
*((uint32_t *)(mData + chunkPtrOffset)) = rowChunk - mData;
|
||||
// Mark the new chunk's next 'pointer' as null
|
||||
*((uint32_t *)(rowChunk + ROW_SLOT_CHUNK_SIZE - sizeof(uint32_t))) = 0;
|
||||
} else {
|
||||
LOG_WINDOW("follwing 'pointer' to next chunk, offset of next pointer is %d", chunkPtrOffset);
|
||||
rowChunk = offsetToPtr(nextChunkOffset);
|
||||
chunkPtrOffset = rowChunk - mData + (ROW_SLOT_CHUNK_NUM_ROWS * sizeof(row_slot_t));
|
||||
}
|
||||
chunk = static_cast<RowSlotChunk*>(offsetToPtr(chunk->nextChunkOffset));
|
||||
chunk->nextChunkOffset = 0;
|
||||
chunkPos = 0;
|
||||
}
|
||||
mHeader->numRows++;
|
||||
|
||||
return (row_slot_t *)(rowChunk + (chunkPos * sizeof(row_slot_t)));
|
||||
mHeader->numRows += 1;
|
||||
return &chunk->slots[chunkPos];
|
||||
}
|
||||
|
||||
field_slot_t * CursorWindow::getFieldSlotWithCheck(int row, int column)
|
||||
{
|
||||
if (row < 0 || row >= mHeader->numRows || column < 0 || column >= mHeader->numColumns) {
|
||||
LOGE("Failed to read row# %d, column# from a CursorWindow which has %d rows, %d columns.",
|
||||
row, column, mHeader->numRows, mHeader->numColumns);
|
||||
return NULL;
|
||||
}
|
||||
row_slot_t * rowSlot = getRowSlot(row);
|
||||
if (!rowSlot) {
|
||||
LOGE("Failed to find rowSlot for row %d", row);
|
||||
return NULL;
|
||||
}
|
||||
if (rowSlot->offset == 0 || rowSlot->offset >= mSize) {
|
||||
LOGE("Invalid rowSlot, offset = %d", rowSlot->offset);
|
||||
return NULL;
|
||||
}
|
||||
int fieldDirOffset = rowSlot->offset;
|
||||
return ((field_slot_t *)offsetToPtr(fieldDirOffset)) + column;
|
||||
CursorWindow::FieldSlot* CursorWindow::getFieldSlot(uint32_t row, uint32_t column) {
|
||||
if (row >= mHeader->numRows || column >= mHeader->numColumns) {
|
||||
LOGE("Failed to read row %d, column %d from a CursorWindow which "
|
||||
"has %d rows, %d columns.",
|
||||
row, column, mHeader->numRows, mHeader->numColumns);
|
||||
return NULL;
|
||||
}
|
||||
RowSlot* rowSlot = getRowSlot(row);
|
||||
if (!rowSlot) {
|
||||
LOGE("Failed to find rowSlot for row %d.", row);
|
||||
return NULL;
|
||||
}
|
||||
FieldSlot* fieldDir = static_cast<FieldSlot*>(offsetToPtr(rowSlot->offset));
|
||||
return &fieldDir[column];
|
||||
}
|
||||
|
||||
void CursorWindow::copyIn(uint32_t offset, uint8_t const * data, size_t size)
|
||||
{
|
||||
assert(offset + size <= mSize);
|
||||
memcpy(mData + offset, data, size);
|
||||
status_t CursorWindow::putBlob(uint32_t row, uint32_t column, const void* value, size_t size) {
|
||||
return putBlobOrString(row, column, value, size, FIELD_TYPE_BLOB);
|
||||
}
|
||||
|
||||
void CursorWindow::copyIn(uint32_t offset, int64_t data)
|
||||
{
|
||||
assert(offset + sizeof(int64_t) <= mSize);
|
||||
memcpy(mData + offset, (uint8_t *)&data, sizeof(int64_t));
|
||||
status_t CursorWindow::putString(uint32_t row, uint32_t column, const char* value,
|
||||
size_t sizeIncludingNull) {
|
||||
return putBlobOrString(row, column, value, sizeIncludingNull, FIELD_TYPE_STRING);
|
||||
}
|
||||
|
||||
void CursorWindow::copyIn(uint32_t offset, double data)
|
||||
{
|
||||
assert(offset + sizeof(double) <= mSize);
|
||||
memcpy(mData + offset, (uint8_t *)&data, sizeof(double));
|
||||
}
|
||||
status_t CursorWindow::putBlobOrString(uint32_t row, uint32_t column,
|
||||
const void* value, size_t size, int32_t type) {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
void CursorWindow::copyOut(uint32_t offset, uint8_t * data, size_t size)
|
||||
{
|
||||
assert(offset + size <= mSize);
|
||||
memcpy(data, mData + offset, size);
|
||||
}
|
||||
|
||||
int64_t CursorWindow::copyOutLong(uint32_t offset)
|
||||
{
|
||||
int64_t value;
|
||||
assert(offset + sizeof(int64_t) <= mSize);
|
||||
memcpy(&value, mData + offset, sizeof(int64_t));
|
||||
return value;
|
||||
}
|
||||
|
||||
double CursorWindow::copyOutDouble(uint32_t offset)
|
||||
{
|
||||
double value;
|
||||
assert(offset + sizeof(double) <= mSize);
|
||||
memcpy(&value, mData + offset, sizeof(double));
|
||||
return value;
|
||||
}
|
||||
|
||||
bool CursorWindow::putLong(unsigned int row, unsigned int col, int64_t value)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
FieldSlot* fieldSlot = getFieldSlot(row, column);
|
||||
if (!fieldSlot) {
|
||||
return false;
|
||||
return BAD_VALUE;
|
||||
}
|
||||
|
||||
#if WINDOW_STORAGE_INLINE_NUMERICS
|
||||
fieldSlot->data.l = value;
|
||||
#else
|
||||
int offset = alloc(sizeof(int64_t));
|
||||
uint32_t offset = alloc(size);
|
||||
if (!offset) {
|
||||
return false;
|
||||
return NO_MEMORY;
|
||||
}
|
||||
|
||||
copyIn(offset, value);
|
||||
memcpy(offsetToPtr(offset), value, size);
|
||||
|
||||
fieldSlot->type = type;
|
||||
fieldSlot->data.buffer.offset = offset;
|
||||
fieldSlot->data.buffer.size = sizeof(int64_t);
|
||||
#endif
|
||||
fieldSlot->data.buffer.size = size;
|
||||
return OK;
|
||||
}
|
||||
|
||||
status_t CursorWindow::putLong(uint32_t row, uint32_t column, int64_t value) {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
FieldSlot* fieldSlot = getFieldSlot(row, column);
|
||||
if (!fieldSlot) {
|
||||
return BAD_VALUE;
|
||||
}
|
||||
|
||||
fieldSlot->type = FIELD_TYPE_INTEGER;
|
||||
return true;
|
||||
fieldSlot->data.l = value;
|
||||
return OK;
|
||||
}
|
||||
|
||||
bool CursorWindow::putDouble(unsigned int row, unsigned int col, double value)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
status_t CursorWindow::putDouble(uint32_t row, uint32_t column, double value) {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
FieldSlot* fieldSlot = getFieldSlot(row, column);
|
||||
if (!fieldSlot) {
|
||||
return false;
|
||||
return BAD_VALUE;
|
||||
}
|
||||
|
||||
#if WINDOW_STORAGE_INLINE_NUMERICS
|
||||
fieldSlot->data.d = value;
|
||||
#else
|
||||
int offset = alloc(sizeof(int64_t));
|
||||
if (!offset) {
|
||||
return false;
|
||||
}
|
||||
|
||||
copyIn(offset, value);
|
||||
|
||||
fieldSlot->data.buffer.offset = offset;
|
||||
fieldSlot->data.buffer.size = sizeof(double);
|
||||
#endif
|
||||
fieldSlot->type = FIELD_TYPE_FLOAT;
|
||||
return true;
|
||||
fieldSlot->data.d = value;
|
||||
return OK;
|
||||
}
|
||||
|
||||
bool CursorWindow::putNull(unsigned int row, unsigned int col)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
status_t CursorWindow::putNull(uint32_t row, uint32_t column) {
|
||||
if (mReadOnly) {
|
||||
return INVALID_OPERATION;
|
||||
}
|
||||
|
||||
FieldSlot* fieldSlot = getFieldSlot(row, column);
|
||||
if (!fieldSlot) {
|
||||
return false;
|
||||
return BAD_VALUE;
|
||||
}
|
||||
|
||||
fieldSlot->type = FIELD_TYPE_NULL;
|
||||
fieldSlot->data.buffer.offset = 0;
|
||||
fieldSlot->data.buffer.size = 0;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CursorWindow::getLong(unsigned int row, unsigned int col, int64_t * valueOut)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
if (!fieldSlot || fieldSlot->type != FIELD_TYPE_INTEGER) {
|
||||
return false;
|
||||
}
|
||||
|
||||
*valueOut = getFieldSlotValueLong(fieldSlot);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CursorWindow::getDouble(unsigned int row, unsigned int col, double * valueOut)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
if (!fieldSlot || fieldSlot->type != FIELD_TYPE_FLOAT) {
|
||||
return false;
|
||||
}
|
||||
|
||||
*valueOut = getFieldSlotValueDouble(fieldSlot);
|
||||
return true;
|
||||
}
|
||||
|
||||
bool CursorWindow::getNull(unsigned int row, unsigned int col, bool * valueOut)
|
||||
{
|
||||
field_slot_t * fieldSlot = getFieldSlotWithCheck(row, col);
|
||||
if (!fieldSlot) {
|
||||
return false;
|
||||
}
|
||||
|
||||
if (fieldSlot->type != FIELD_TYPE_NULL) {
|
||||
*valueOut = false;
|
||||
} else {
|
||||
*valueOut = true;
|
||||
}
|
||||
return true;
|
||||
return OK;
|
||||
}
|
||||
|
||||
}; // namespace android
|
||||
|
||||
@ -752,7 +752,7 @@ status_t Parcel::writeBlob(size_t len, WritableBlob* outBlob)
|
||||
|
||||
int result = ashmem_set_prot_region(fd, PROT_READ | PROT_WRITE);
|
||||
if (result < 0) {
|
||||
status = -result;
|
||||
status = result;
|
||||
} else {
|
||||
void* ptr = ::mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
||||
if (ptr == MAP_FAILED) {
|
||||
@ -760,7 +760,7 @@ status_t Parcel::writeBlob(size_t len, WritableBlob* outBlob)
|
||||
} else {
|
||||
result = ashmem_set_prot_region(fd, PROT_READ);
|
||||
if (result < 0) {
|
||||
status = -result;
|
||||
status = result;
|
||||
} else {
|
||||
status = writeInt32(1);
|
||||
if (!status) {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user