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Merge "Use ashmem for CursorWindows. Bug: 5332296" into ics-mr0

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This commit is contained in:
Jeff Brown
2011-10-11 13:54:45 -07:00
committed by Android (Google) Code Review
parent a72a80632b 0cde89f5f0
commit 58bf986c3e
13 changed files with 696 additions and 818 deletions
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110
core/java/android/content/ContentProviderNative.java
View File

@ -108,21 +108,22 @@ abstract public class ContentProviderNative extends Binder implements IContentPr
String sortOrder = data.readString();
IContentObserver observer = IContentObserver.Stub.asInterface(
data.readStrongBinder());
CursorWindow window = CursorWindow.CREATOR.createFromParcel(data);
Cursor cursor = query(url, projection, selection, selectionArgs, sortOrder);
if (cursor != null) {
CursorToBulkCursorAdaptor adaptor = new CursorToBulkCursorAdaptor(
cursor, observer, getProviderName(), window);
cursor, observer, getProviderName());
final IBinder binder = adaptor.asBinder();
final int count = adaptor.count();
final int index = BulkCursorToCursorAdaptor.findRowIdColumnIndex(
adaptor.getColumnNames());
final boolean wantsAllOnMoveCalls = adaptor.getWantsAllOnMoveCalls();
reply.writeNoException();
reply.writeStrongBinder(binder);
reply.writeInt(count);
reply.writeInt(index);
reply.writeInt(wantsAllOnMoveCalls ? 1 : 0);
} else {
reply.writeNoException();
reply.writeStrongBinder(null);
@ -324,67 +325,58 @@ final class ContentProviderProxy implements IContentProvider
public Cursor query(Uri url, String[] projection, String selection,
String[] selectionArgs, String sortOrder) throws RemoteException {
CursorWindow window = new CursorWindow(false /* window will be used remotely */);
BulkCursorToCursorAdaptor adaptor = new BulkCursorToCursorAdaptor();
Parcel data = Parcel.obtain();
Parcel reply = Parcel.obtain();
try {
BulkCursorToCursorAdaptor adaptor = new BulkCursorToCursorAdaptor();
Parcel data = Parcel.obtain();
Parcel reply = Parcel.obtain();
try {
data.writeInterfaceToken(IContentProvider.descriptor);
data.writeInterfaceToken(IContentProvider.descriptor);
url.writeToParcel(data, 0);
int length = 0;
if (projection != null) {
length = projection.length;
}
data.writeInt(length);
for (int i = 0; i < length; i++) {
data.writeString(projection[i]);
}
data.writeString(selection);
if (selectionArgs != null) {
length = selectionArgs.length;
} else {
length = 0;
}
data.writeInt(length);
for (int i = 0; i < length; i++) {
data.writeString(selectionArgs[i]);
}
data.writeString(sortOrder);
data.writeStrongBinder(adaptor.getObserver().asBinder());
window.writeToParcel(data, 0);
mRemote.transact(IContentProvider.QUERY_TRANSACTION, data, reply, 0);
DatabaseUtils.readExceptionFromParcel(reply);
IBulkCursor bulkCursor = BulkCursorNative.asInterface(reply.readStrongBinder());
if (bulkCursor != null) {
int rowCount = reply.readInt();
int idColumnPosition = reply.readInt();
adaptor.initialize(bulkCursor, rowCount, idColumnPosition);
} else {
adaptor.close();
adaptor = null;
}
return adaptor;
} catch (RemoteException ex) {
adaptor.close();
throw ex;
} catch (RuntimeException ex) {
adaptor.close();
throw ex;
} finally {
data.recycle();
reply.recycle();
url.writeToParcel(data, 0);
int length = 0;
if (projection != null) {
length = projection.length;
}
data.writeInt(length);
for (int i = 0; i < length; i++) {
data.writeString(projection[i]);
}
data.writeString(selection);
if (selectionArgs != null) {
length = selectionArgs.length;
} else {
length = 0;
}
data.writeInt(length);
for (int i = 0; i < length; i++) {
data.writeString(selectionArgs[i]);
}
data.writeString(sortOrder);
data.writeStrongBinder(adaptor.getObserver().asBinder());
mRemote.transact(IContentProvider.QUERY_TRANSACTION, data, reply, 0);
DatabaseUtils.readExceptionFromParcel(reply);
IBulkCursor bulkCursor = BulkCursorNative.asInterface(reply.readStrongBinder());
if (bulkCursor != null) {
int rowCount = reply.readInt();
int idColumnPosition = reply.readInt();
boolean wantsAllOnMoveCalls = reply.readInt() != 0;
adaptor.initialize(bulkCursor, rowCount, idColumnPosition, wantsAllOnMoveCalls);
} else {
adaptor.close();
adaptor = null;
}
return adaptor;
} catch (RemoteException ex) {
adaptor.close();
throw ex;
} catch (RuntimeException ex) {
adaptor.close();
throw ex;
} finally {
// We close the window now because the cursor adaptor does not
// take ownership of the window until the first call to onMove.
// The adaptor will obtain a fresh reference to the window when
// it is filled.
window.close();
data.recycle();
reply.recycle();
}
}

6
core/java/android/database/AbstractWindowedCursor.java
View File

@ -189,12 +189,14 @@ public abstract class AbstractWindowedCursor extends AbstractCursor {
/**
* If there is a window, clear it.
* Otherwise, creates a local window.
*
* @param name The window name.
* @hide
*/
protected void clearOrCreateLocalWindow() {
protected void clearOrCreateLocalWindow(String name) {
if (mWindow == null) {
// If there isn't a window set already it will only be accessed locally
mWindow = new CursorWindow(true /* the window is local only */);
mWindow = new CursorWindow(name, true /* the window is local only */);
} else {
mWindow.clear();
}

8
core/java/android/database/BulkCursorNative.java
View File

@ -109,9 +109,8 @@ public abstract class BulkCursorNative extends Binder implements IBulkCursor
case REQUERY_TRANSACTION: {
data.enforceInterface(IBulkCursor.descriptor);
IContentObserver observer =
IContentObserver.Stub.asInterface(data.readStrongBinder());
CursorWindow window = CursorWindow.CREATOR.createFromParcel(data);
int count = requery(observer, window);
IContentObserver.Stub.asInterface(data.readStrongBinder());
int count = requery(observer);
reply.writeNoException();
reply.writeInt(count);
reply.writeBundle(getExtras());
@ -294,13 +293,12 @@ final class BulkCursorProxy implements IBulkCursor {
}
}
public int requery(IContentObserver observer, CursorWindow window) throws RemoteException {
public int requery(IContentObserver observer) throws RemoteException {
Parcel data = Parcel.obtain();
Parcel reply = Parcel.obtain();
try {
data.writeInterfaceToken(IBulkCursor.descriptor);
data.writeStrongInterface(observer);
window.writeToParcel(data, 0);
boolean result = mRemote.transact(REQUERY_TRANSACTION, data, reply, 0);
DatabaseUtils.readExceptionFromParcel(reply);

47
core/java/android/database/BulkCursorToCursorAdaptor.java
View File

@ -38,11 +38,13 @@ public final class BulkCursorToCursorAdaptor extends AbstractWindowedCursor {
* Initializes the adaptor.
* Must be called before first use.
*/
public void initialize(IBulkCursor bulkCursor, int count, int idIndex) {
public void initialize(IBulkCursor bulkCursor, int count, int idIndex,
boolean wantsAllOnMoveCalls) {
mBulkCursor = bulkCursor;
mColumns = null; // lazily retrieved
mCount = count;
mRowIdColumnIndex = idIndex;
mWantsAllOnMoveCalls = wantsAllOnMoveCalls;
}
/**
@ -86,15 +88,12 @@ public final class BulkCursorToCursorAdaptor extends AbstractWindowedCursor {
try {
// Make sure we have the proper window
if (mWindow != null) {
if (newPosition < mWindow.getStartPosition() ||
newPosition >= (mWindow.getStartPosition() + mWindow.getNumRows())) {
setWindow(mBulkCursor.getWindow(newPosition));
} else if (mWantsAllOnMoveCalls) {
mBulkCursor.onMove(newPosition);
}
} else {
if (mWindow == null
|| newPosition < mWindow.getStartPosition()
|| newPosition >= mWindow.getStartPosition() + mWindow.getNumRows()) {
setWindow(mBulkCursor.getWindow(newPosition));
} else if (mWantsAllOnMoveCalls) {
mBulkCursor.onMove(newPosition);
}
} catch (RemoteException ex) {
// We tried to get a window and failed
@ -145,25 +144,19 @@ public final class BulkCursorToCursorAdaptor extends AbstractWindowedCursor {
throwIfCursorIsClosed();
try {
CursorWindow newWindow = new CursorWindow(false /* create a remote window */);
try {
mCount = mBulkCursor.requery(getObserver(), newWindow);
if (mCount != -1) {
mPos = -1;
closeWindow();
mCount = mBulkCursor.requery(getObserver());
if (mCount != -1) {
mPos = -1;
closeWindow();
// super.requery() will call onChanged. Do it here instead of relying on the
// observer from the far side so that observers can see a correct value for mCount
// when responding to onChanged.
super.requery();
return true;
} else {
deactivate();
return false;
}
} finally {
// Don't take ownership of the window until the next call to onMove.
newWindow.close();
// super.requery() will call onChanged. Do it here instead of relying on the
// observer from the far side so that observers can see a correct value for mCount
// when responding to onChanged.
super.requery();
return true;
} else {
deactivate();
return false;
}
} catch (Exception ex) {
Log.e(TAG, "Unable to requery because the remote process exception " + ex.getMessage());

85
core/java/android/database/CursorToBulkCursorAdaptor.java
View File

@ -53,6 +53,7 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
* for managing the lifetime of their window.
*/
private CursorWindow mWindowForNonWindowedCursor;
private boolean mWindowForNonWindowedCursorWasFilled;
private static final class ContentObserverProxy extends ContentObserver {
protected IContentObserver mRemote;
@ -87,26 +88,11 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
}
}
public CursorToBulkCursorAdaptor(Cursor cursor, IContentObserver observer, String providerName,
CursorWindow window) {
public CursorToBulkCursorAdaptor(Cursor cursor, IContentObserver observer,
String providerName) {
try {
mCursor = (CrossProcessCursor) cursor;
if (mCursor instanceof AbstractWindowedCursor) {
AbstractWindowedCursor windowedCursor = (AbstractWindowedCursor) cursor;
if (windowedCursor.hasWindow()) {
if (Log.isLoggable(TAG, Log.VERBOSE) || false) {
Log.v(TAG, "Cross process cursor has a local window before setWindow in "
+ providerName, new RuntimeException());
}
}
windowedCursor.setWindow(window); // cursor takes ownership of window
} else {
mWindowForNonWindowedCursor = window; // we own the window
mCursor.fillWindow(0, window);
}
} catch (ClassCastException e) {
// TODO Implement this case.
window.close();
throw new UnsupportedOperationException(
"Only CrossProcessCursor cursors are supported across process for now", e);
}
@ -117,17 +103,22 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
}
}
private void closeCursorAndWindowLocked() {
private void closeWindowForNonWindowedCursorLocked() {
if (mWindowForNonWindowedCursor != null) {
mWindowForNonWindowedCursor.close();
mWindowForNonWindowedCursor = null;
mWindowForNonWindowedCursorWasFilled = false;
}
}
private void disposeLocked() {
if (mCursor != null) {
unregisterObserverProxyLocked();
mCursor.close();
mCursor = null;
}
if (mWindowForNonWindowedCursor != null) {
mWindowForNonWindowedCursor.close();
mWindowForNonWindowedCursor = null;
}
closeWindowForNonWindowedCursorLocked();
}
private void throwIfCursorIsClosed() {
@ -139,7 +130,7 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
@Override
public void binderDied() {
synchronized (mLock) {
closeCursorAndWindowLocked();
disposeLocked();
}
}
@ -148,17 +139,30 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
synchronized (mLock) {
throwIfCursorIsClosed();
mCursor.moveToPosition(startPos);
final CursorWindow window;
CursorWindow window;
if (mCursor instanceof AbstractWindowedCursor) {
window = ((AbstractWindowedCursor)mCursor).getWindow();
AbstractWindowedCursor windowedCursor = (AbstractWindowedCursor)mCursor;
window = windowedCursor.getWindow();
if (window == null) {
window = new CursorWindow(mProviderName, false /*localOnly*/);
windowedCursor.setWindow(window);
}
mCursor.moveToPosition(startPos);
} else {
window = mWindowForNonWindowedCursor;
if (window != null
&& (startPos < window.getStartPosition() ||
startPos >= (window.getStartPosition() + window.getNumRows()))) {
if (window == null) {
window = new CursorWindow(mProviderName, false /*localOnly*/);
mWindowForNonWindowedCursor = window;
}
mCursor.moveToPosition(startPos);
if (!mWindowForNonWindowedCursorWasFilled
|| startPos < window.getStartPosition()
|| startPos >= window.getStartPosition() + window.getNumRows()) {
mCursor.fillWindow(startPos, window);
mWindowForNonWindowedCursorWasFilled = true;
}
}
@ -206,29 +210,24 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
unregisterObserverProxyLocked();
mCursor.deactivate();
}
closeWindowForNonWindowedCursorLocked();
}
}
@Override
public void close() {
synchronized (mLock) {
closeCursorAndWindowLocked();
disposeLocked();
}
}
@Override
public int requery(IContentObserver observer, CursorWindow window) {
public int requery(IContentObserver observer) {
synchronized (mLock) {
throwIfCursorIsClosed();
if (mCursor instanceof AbstractWindowedCursor) {
((AbstractWindowedCursor) mCursor).setWindow(window);
} else {
if (mWindowForNonWindowedCursor != null) {
mWindowForNonWindowedCursor.close();
}
mWindowForNonWindowedCursor = window;
}
closeWindowForNonWindowedCursorLocked();
try {
if (!mCursor.requery()) {
@ -241,12 +240,6 @@ public final class CursorToBulkCursorAdaptor extends BulkCursorNative
throw leakProgram;
}
if (!(mCursor instanceof AbstractWindowedCursor)) {
if (window != null) {
mCursor.fillWindow(0, window);
}
}
unregisterObserverProxyLocked();
createAndRegisterObserverProxyLocked(observer);
return mCursor.getCount();

53
core/java/android/database/CursorWindow.java
View File

@ -22,7 +22,6 @@ import android.content.res.Resources;
import android.database.sqlite.SQLiteClosable;
import android.database.sqlite.SQLiteException;
import android.os.Binder;
import android.os.IBinder;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.Process;
@ -31,6 +30,13 @@ import android.util.SparseIntArray;
/**
* A buffer containing multiple cursor rows.
* <p>
* A {@link CursorWindow} is read-write when created and used locally. When sent
* to a remote process (by writing it to a {@link Parcel}), the remote process
* receives a read-only view of the cursor window. Typically the cursor window
* will be allocated by the producer, filled with data, and then sent to the
* consumer for reading.
* </p>
*/
public class CursorWindow extends SQLiteClosable implements Parcelable {
private static final String STATS_TAG = "CursorWindowStats";
@ -52,10 +58,11 @@ public class CursorWindow extends SQLiteClosable implements Parcelable {
private final CloseGuard mCloseGuard = CloseGuard.get();
private static native int nativeInitializeEmpty(int cursorWindowSize, boolean localOnly);
private static native int nativeInitializeFromBinder(IBinder nativeBinder);
private static native int nativeCreate(String name,
int cursorWindowSize, boolean localOnly);
private static native int nativeCreateFromParcel(Parcel parcel);
private static native void nativeDispose(int windowPtr);
private static native IBinder nativeGetBinder(int windowPtr);
private static native void nativeWriteToParcel(int windowPtr, Parcel parcel);
private static native void nativeClear(int windowPtr);
@ -78,6 +85,30 @@ public class CursorWindow extends SQLiteClosable implements Parcelable {
private static native boolean nativePutDouble(int windowPtr, double value, int row, int column);
private static native boolean nativePutNull(int windowPtr, int row, int column);
/**
* Creates a new empty cursor window and gives it a name.
* <p>
* The cursor initially has no rows or columns. Call {@link #setNumColumns(int)} to
* set the number of columns before adding any rows to the cursor.
* </p>
*
* @param name The name of the cursor window, or null if none.
* @param localWindow True if this window will be used in this process only,
* false if it might be sent to another processes.
*
* @hide
*/
public CursorWindow(String name, boolean localWindow) {
mStartPos = 0;
mWindowPtr = nativeCreate(name, sCursorWindowSize, localWindow);
if (mWindowPtr == 0) {
throw new CursorWindowAllocationException("Cursor window allocation of " +
(sCursorWindowSize / 1024) + " kb failed. " + printStats());
}
mCloseGuard.open("close");
recordNewWindow(Binder.getCallingPid(), mWindowPtr);
}
/**
* Creates a new empty cursor window.
* <p>
@ -89,20 +120,12 @@ public class CursorWindow extends SQLiteClosable implements Parcelable {
* false if it might be sent to another processes.
*/
public CursorWindow(boolean localWindow) {
mStartPos = 0;
mWindowPtr = nativeInitializeEmpty(sCursorWindowSize, localWindow);
if (mWindowPtr == 0) {
throw new CursorWindowAllocationException("Cursor window allocation of " +
(sCursorWindowSize / 1024) + " kb failed. " + printStats());
}
mCloseGuard.open("close");
recordNewWindow(Binder.getCallingPid(), mWindowPtr);
this(null, localWindow);
}
private CursorWindow(Parcel source) {
IBinder binder = source.readStrongBinder();
mStartPos = source.readInt();
mWindowPtr = nativeInitializeFromBinder(binder);
mWindowPtr = nativeCreateFromParcel(source);
if (mWindowPtr == 0) {
throw new CursorWindowAllocationException("Cursor window could not be "
+ "created from binder.");
@ -687,8 +710,8 @@ public class CursorWindow extends SQLiteClosable implements Parcelable {
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeStrongBinder(nativeGetBinder(mWindowPtr));
dest.writeInt(mStartPos);
nativeWriteToParcel(mWindowPtr, dest);
if ((flags & Parcelable.PARCELABLE_WRITE_RETURN_VALUE) != 0) {
releaseReference();

2
core/java/android/database/IBulkCursor.java
View File

@ -56,7 +56,7 @@ public interface IBulkCursor extends IInterface {
public void close() throws RemoteException;
public int requery(IContentObserver observer, CursorWindow window) throws RemoteException;
public int requery(IContentObserver observer) throws RemoteException;
boolean getWantsAllOnMoveCalls() throws RemoteException;

2
core/java/android/database/sqlite/SQLiteCursor.java
View File

@ -155,7 +155,7 @@ public class SQLiteCursor extends AbstractWindowedCursor {
}
private void fillWindow(int startPos) {
clearOrCreateLocalWindow();
clearOrCreateLocalWindow(getDatabase().getPath());
mWindow.setStartPosition(startPos);
int count = getQuery().fillWindow(mWindow);
if (startPos == 0) { // fillWindow returns count(*) only for startPos = 0

314
core/jni/android_database_CursorWindow.cpp
View File

@ -57,14 +57,23 @@ static void throwUnknownTypeException(JNIEnv * env, jint type) {
jniThrowException(env, "java/lang/IllegalStateException", msg.string());
}
static jint nativeInitializeEmpty(JNIEnv* env, jclass clazz,
jint cursorWindowSize, jboolean localOnly) {
CursorWindow* window = new CursorWindow(cursorWindowSize);
if (!window) {
return 0;
static jint nativeCreate(JNIEnv* env, jclass clazz,
jstring nameObj, jint cursorWindowSize, jboolean localOnly) {
String8 name;
if (nameObj) {
const char* nameStr = env->GetStringUTFChars(nameObj, NULL);
name.setTo(nameStr);
env->ReleaseStringUTFChars(nameObj, nameStr);
}
if (!window->initBuffer(localOnly)) {
delete window;
if (name.size() == 0) {
name.setTo("<unnamed>");
}
CursorWindow* window;
status_t status = CursorWindow::create(name, cursorWindowSize, localOnly, &window);
if (status || !window) {
LOGE("Could not allocate CursorWindow '%s' of size %d due to error %d.",
name.string(), cursorWindowSize, status);
return 0;
}
@ -72,19 +81,13 @@ static jint nativeInitializeEmpty(JNIEnv* env, jclass clazz,
return reinterpret_cast<jint>(window);
}
static jint nativeInitializeFromBinder(JNIEnv* env, jclass clazz, jobject binderObj) {
sp<IMemory> memory = interface_cast<IMemory>(ibinderForJavaObject(env, binderObj));
if (memory == NULL) {
jniThrowException(env, "java/lang/IllegalStateException", "Couldn't get native binder");
return 0;
}
static jint nativeCreateFromParcel(JNIEnv* env, jclass clazz, jobject parcelObj) {
Parcel* parcel = parcelForJavaObject(env, parcelObj);
CursorWindow* window = new CursorWindow();
if (!window) {
return 0;
}
if (!window->setMemory(memory)) {
delete window;
CursorWindow* window;
status_t status = CursorWindow::createFromParcel(parcel, &window);
if (status || !window) {
LOGE("Could not create CursorWindow from Parcel due to error %d.", status);
return 0;
}
@ -101,22 +104,26 @@ static void nativeDispose(JNIEnv* env, jclass clazz, jint windowPtr) {
}
}
static jobject nativeGetBinder(JNIEnv * env, jclass clazz, jint windowPtr) {
static void nativeWriteToParcel(JNIEnv * env, jclass clazz, jint windowPtr,
jobject parcelObj) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
if (window) {
sp<IMemory> memory = window->getMemory();
if (memory != NULL) {
sp<IBinder> binder = memory->asBinder();
return javaObjectForIBinder(env, binder);
}
Parcel* parcel = parcelForJavaObject(env, parcelObj);
status_t status = window->writeToParcel(parcel);
if (status) {
String8 msg;
msg.appendFormat("Could not write CursorWindow to Parcel due to error %d.", status);
jniThrowRuntimeException(env, msg.string());
}
return NULL;
}
static void nativeClear(JNIEnv * env, jclass clazz, jint windowPtr) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Clearing window %p", window);
window->clear();
status_t status = window->clear();
if (status) {
LOG_WINDOW("Could not clear window. error=%d", status);
}
}
static jint nativeGetNumRows(JNIEnv* env, jclass clazz, jint windowPtr) {
@ -127,12 +134,14 @@ static jint nativeGetNumRows(JNIEnv* env, jclass clazz, jint windowPtr) {
static jboolean nativeSetNumColumns(JNIEnv* env, jclass clazz, jint windowPtr,
jint columnNum) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
return window->setNumColumns(columnNum);
status_t status = window->setNumColumns(columnNum);
return status == OK;
}
static jboolean nativeAllocRow(JNIEnv* env, jclass clazz, jint windowPtr) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
return window->allocRow() != NULL;
status_t status = window->allocRow();
return status == OK;
}
static void nativeFreeLastRow(JNIEnv* env, jclass clazz, jint windowPtr) {
@ -145,14 +154,14 @@ static jint nativeGetType(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("returning column type affinity for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
// FIXME: This is really broken but we have CTS tests that depend
// on this legacy behavior.
//throwExceptionWithRowCol(env, row, column);
return FIELD_TYPE_NULL;
return CursorWindow::FIELD_TYPE_NULL;
}
return fieldSlot->type;
return window->getFieldSlotType(fieldSlot);
}
static jbyteArray nativeGetBlob(JNIEnv* env, jclass clazz, jint windowPtr,
@ -160,29 +169,29 @@ static jbyteArray nativeGetBlob(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Getting blob for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
throwExceptionWithRowCol(env, row, column);
return NULL;
}
uint8_t type = fieldSlot->type;
if (type == FIELD_TYPE_BLOB || type == FIELD_TYPE_STRING) {
uint32_t size = fieldSlot->data.buffer.size;
int32_t type = window->getFieldSlotType(fieldSlot);
if (type == CursorWindow::FIELD_TYPE_BLOB || type == CursorWindow::FIELD_TYPE_STRING) {
size_t size;
const void* value = window->getFieldSlotValueBlob(fieldSlot, &size);
jbyteArray byteArray = env->NewByteArray(size);
if (!byteArray) {
env->ExceptionClear();
throw_sqlite3_exception(env, "Native could not create new byte[]");
return NULL;
}
env->SetByteArrayRegion(byteArray, 0, size,
reinterpret_cast<jbyte*>(window->offsetToPtr(fieldSlot->data.buffer.offset)));
env->SetByteArrayRegion(byteArray, 0, size, static_cast<const jbyte*>(value));
return byteArray;
} else if (type == FIELD_TYPE_INTEGER) {
} else if (type == CursorWindow::FIELD_TYPE_INTEGER) {
throw_sqlite3_exception(env, "INTEGER data in nativeGetBlob ");
} else if (type == FIELD_TYPE_FLOAT) {
} else if (type == CursorWindow::FIELD_TYPE_FLOAT) {
throw_sqlite3_exception(env, "FLOAT data in nativeGetBlob ");
} else if (type == FIELD_TYPE_NULL) {
} else if (type == CursorWindow::FIELD_TYPE_NULL) {
// do nothing
} else {
throwUnknownTypeException(env, type);
@ -195,43 +204,37 @@ static jstring nativeGetString(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Getting string for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
throwExceptionWithRowCol(env, row, column);
return NULL;
}
uint8_t type = fieldSlot->type;
if (type == FIELD_TYPE_STRING) {
uint32_t size = fieldSlot->data.buffer.size;
#if WINDOW_STORAGE_UTF8
if (size <= 1) {
int32_t type = window->getFieldSlotType(fieldSlot);
if (type == CursorWindow::FIELD_TYPE_STRING) {
size_t sizeIncludingNull;
const char* value = window->getFieldSlotValueString(fieldSlot, &sizeIncludingNull);
if (sizeIncludingNull <= 1) {
return gEmptyString;
}
// Convert to UTF-16 here instead of calling NewStringUTF. NewStringUTF
// doesn't like UTF-8 strings with high codepoints. It actually expects
// Modified UTF-8 with encoded surrogate pairs.
String16 utf16(window->getFieldSlotValueString(fieldSlot), size - 1);
String16 utf16(value, sizeIncludingNull - 1);
return env->NewString(reinterpret_cast<const jchar*>(utf16.string()), utf16.size());
#else
size_t chars = size / sizeof(char16_t);
return chars ? env->NewString(reinterpret_cast<jchar*>(
window->getFieldSlotValueString(fieldSlot)), chars)
: gEmptyString;
#endif
} else if (type == FIELD_TYPE_INTEGER) {
} else if (type == CursorWindow::FIELD_TYPE_INTEGER) {
int64_t value = window->getFieldSlotValueLong(fieldSlot);
char buf[32];
snprintf(buf, sizeof(buf), "%lld", value);
return env->NewStringUTF(buf);
} else if (type == FIELD_TYPE_FLOAT) {
} else if (type == CursorWindow::FIELD_TYPE_FLOAT) {
double value = window->getFieldSlotValueDouble(fieldSlot);
char buf[32];
snprintf(buf, sizeof(buf), "%g", value);
return env->NewStringUTF(buf);
} else if (type == FIELD_TYPE_NULL) {
} else if (type == CursorWindow::FIELD_TYPE_NULL) {
return NULL;
} else if (type == FIELD_TYPE_BLOB) {
} else if (type == CursorWindow::FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to string");
return NULL;
} else {
@ -281,21 +284,6 @@ static void fillCharArrayBufferUTF(JNIEnv* env, jobject bufferObj,
}
}
#if !WINDOW_STORAGE_UTF8
static void fillCharArrayBuffer(JNIEnv* env, jobject bufferObj,
const char16_t* str, size_t len) {
jcharArray dataObj = allocCharArrayBuffer(env, bufferObj, len);
if (dataObj) {
if (len) {
jchar* data = static_cast<jchar*>(env->GetPrimitiveArrayCritical(dataObj, NULL));
memcpy(data, str, len * sizeof(jchar));
env->ReleasePrimitiveArrayCritical(dataObj, data, 0);
}
env->SetIntField(bufferObj, gCharArrayBufferClassInfo.sizeCopied, len);
}
}
#endif
static void clearCharArrayBuffer(JNIEnv* env, jobject bufferObj) {
jcharArray dataObj = allocCharArrayBuffer(env, bufferObj, 0);
if (dataObj) {
@ -308,44 +296,34 @@ static void nativeCopyStringToBuffer(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Copying string for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
throwExceptionWithRowCol(env, row, column);
return;
}
uint8_t type = fieldSlot->type;
if (type == FIELD_TYPE_STRING) {
uint32_t size = fieldSlot->data.buffer.size;
#if WINDOW_STORAGE_UTF8
if (size > 1) {
fillCharArrayBufferUTF(env, bufferObj,
window->getFieldSlotValueString(fieldSlot), size - 1);
int32_t type = window->getFieldSlotType(fieldSlot);
if (type == CursorWindow::FIELD_TYPE_STRING) {
size_t sizeIncludingNull;
const char* value = window->getFieldSlotValueString(fieldSlot, &sizeIncludingNull);
if (sizeIncludingNull > 1) {
fillCharArrayBufferUTF(env, bufferObj, value, sizeIncludingNull - 1);
} else {
clearCharArrayBuffer(env, bufferObj);
}
#else
size_t chars = size / sizeof(char16_t);
if (chars) {
fillCharArrayBuffer(env, bufferObj,
window->getFieldSlotValueString(fieldSlot), chars);
} else {
clearCharArrayBuffer(env, bufferObj);
}
#endif
} else if (type == FIELD_TYPE_INTEGER) {
} else if (type == CursorWindow::FIELD_TYPE_INTEGER) {
int64_t value = window->getFieldSlotValueLong(fieldSlot);
char buf[32];
snprintf(buf, sizeof(buf), "%lld", value);
fillCharArrayBufferUTF(env, bufferObj, buf, strlen(buf));
} else if (type == FIELD_TYPE_FLOAT) {
} else if (type == CursorWindow::FIELD_TYPE_FLOAT) {
double value = window->getFieldSlotValueDouble(fieldSlot);
char buf[32];
snprintf(buf, sizeof(buf), "%g", value);
fillCharArrayBufferUTF(env, bufferObj, buf, strlen(buf));
} else if (type == FIELD_TYPE_NULL) {
} else if (type == CursorWindow::FIELD_TYPE_NULL) {
clearCharArrayBuffer(env, bufferObj);
} else if (type == FIELD_TYPE_BLOB) {
} else if (type == CursorWindow::FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to string");
} else {
throwUnknownTypeException(env, type);
@ -357,29 +335,24 @@ static jlong nativeGetLong(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Getting long for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
throwExceptionWithRowCol(env, row, column);
return 0;
}
uint8_t type = fieldSlot->type;
if (type == FIELD_TYPE_INTEGER) {
int32_t type = window->getFieldSlotType(fieldSlot);
if (type == CursorWindow::FIELD_TYPE_INTEGER) {
return window->getFieldSlotValueLong(fieldSlot);
} else if (type == FIELD_TYPE_STRING) {
uint32_t size = fieldSlot->data.buffer.size;
#if WINDOW_STORAGE_UTF8
return size > 1 ? strtoll(window->getFieldSlotValueString(fieldSlot), NULL, 0) : 0L;
#else
size_t chars = size / sizeof(char16_t);
return chars ? strtoll(String8(window->getFieldSlotValueString(fieldSlot), chars)
.string(), NULL, 0) : 0L;
#endif
} else if (type == FIELD_TYPE_FLOAT) {
} else if (type == CursorWindow::FIELD_TYPE_STRING) {
size_t sizeIncludingNull;
const char* value = window->getFieldSlotValueString(fieldSlot, &sizeIncludingNull);
return sizeIncludingNull > 1 ? strtoll(value, NULL, 0) : 0L;
} else if (type == CursorWindow::FIELD_TYPE_FLOAT) {
return jlong(window->getFieldSlotValueDouble(fieldSlot));
} else if (type == FIELD_TYPE_NULL) {
} else if (type == CursorWindow::FIELD_TYPE_NULL) {
return 0;
} else if (type == FIELD_TYPE_BLOB) {
} else if (type == CursorWindow::FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to long");
return 0;
} else {
@ -393,29 +366,24 @@ static jdouble nativeGetDouble(JNIEnv* env, jclass clazz, jint windowPtr,
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
LOG_WINDOW("Getting double for %d,%d from %p", row, column, window);
field_slot_t* fieldSlot = window->getFieldSlotWithCheck(row, column);
CursorWindow::FieldSlot* fieldSlot = window->getFieldSlot(row, column);
if (!fieldSlot) {
throwExceptionWithRowCol(env, row, column);
return 0.0;
}
uint8_t type = fieldSlot->type;
if (type == FIELD_TYPE_FLOAT) {
int32_t type = window->getFieldSlotType(fieldSlot);
if (type == CursorWindow::FIELD_TYPE_FLOAT) {
return window->getFieldSlotValueDouble(fieldSlot);
} else if (type == FIELD_TYPE_STRING) {
uint32_t size = fieldSlot->data.buffer.size;
#if WINDOW_STORAGE_UTF8
return size > 1 ? strtod(window->getFieldSlotValueString(fieldSlot), NULL) : 0.0;
#else
size_t chars = size / sizeof(char16_t);
return chars ? strtod(String8(window->getFieldSlotValueString(fieldSlot), chars)
.string(), NULL) : 0.0;
#endif
} else if (type == FIELD_TYPE_INTEGER) {
} else if (type == CursorWindow::FIELD_TYPE_STRING) {
size_t sizeIncludingNull;
const char* value = window->getFieldSlotValueString(fieldSlot, &sizeIncludingNull);
return sizeIncludingNull > 1 ? strtod(value, NULL) : 0.0;
} else if (type == CursorWindow::FIELD_TYPE_INTEGER) {
return jdouble(window->getFieldSlotValueLong(fieldSlot));
} else if (type == FIELD_TYPE_NULL) {
} else if (type == CursorWindow::FIELD_TYPE_NULL) {
return 0.0;
} else if (type == FIELD_TYPE_BLOB) {
} else if (type == CursorWindow::FIELD_TYPE_BLOB) {
throw_sqlite3_exception(env, "Unable to convert BLOB to double");
return 0.0;
} else {
@ -427,82 +395,50 @@ static jdouble nativeGetDouble(JNIEnv* env, jclass clazz, jint windowPtr,
static jboolean nativePutBlob(JNIEnv* env, jclass clazz, jint windowPtr,
jbyteArray valueObj, jint row, jint column) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
field_slot_t * fieldSlot = window->getFieldSlotWithCheck(row, column);
if (fieldSlot == NULL) {
LOG_WINDOW(" getFieldSlotWithCheck error ");
return false;
}
jsize len = env->GetArrayLength(valueObj);
uint32_t offset = window->alloc(len);
if (!offset) {
LOG_WINDOW("Failed allocating %u bytes", len);
return false;
}
void* value = env->GetPrimitiveArrayCritical(valueObj, NULL);
window->copyIn(offset, static_cast<const uint8_t*>(value), len);
status_t status = window->putBlob(row, column, value, len);
env->ReleasePrimitiveArrayCritical(valueObj, value, JNI_ABORT);
fieldSlot->type = FIELD_TYPE_BLOB;
fieldSlot->data.buffer.offset = offset;
fieldSlot->data.buffer.size = len;
LOG_WINDOW("%d,%d is BLOB with %u bytes @ %d", row, column, len, offset);
if (status) {
LOG_WINDOW("Failed to put blob. error=%d", status);
return false;
}
LOG_WINDOW("%d,%d is BLOB with %u bytes", row, column, len);
return true;
}
static jboolean nativePutString(JNIEnv* env, jclass clazz, jint windowPtr,
jstring valueObj, jint row, jint column) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
field_slot_t * fieldSlot = window->getFieldSlotWithCheck(row, column);
if (fieldSlot == NULL) {
LOG_WINDOW(" getFieldSlotWithCheck error ");
return false;
}
#if WINDOW_STORAGE_UTF8
size_t size = env->GetStringUTFLength(valueObj) + 1;
size_t sizeIncludingNull = env->GetStringUTFLength(valueObj) + 1;
const char* valueStr = env->GetStringUTFChars(valueObj, NULL);
#else
size_t size = env->GetStringLength(valueObj) * sizeof(jchar);
const jchar* valueStr = env->GetStringChars(valueObj, NULL);
#endif
if (!valueStr) {
LOG_WINDOW("value can't be transfer to UTFChars");
LOG_WINDOW("value can't be transferred to UTFChars");
return false;
}
uint32_t offset = window->alloc(size);
if (!offset) {
LOG_WINDOW("Failed allocating %u bytes", size);
#if WINDOW_STORAGE_UTF8
env->ReleaseStringUTFChars(valueObj, valueStr);
#else
env->ReleaseStringChars(valueObj, valueStr);
#endif
return false;
}
window->copyIn(offset, reinterpret_cast<const uint8_t*>(valueStr), size);
#if WINDOW_STORAGE_UTF8
status_t status = window->putString(row, column, valueStr, sizeIncludingNull);
env->ReleaseStringUTFChars(valueObj, valueStr);
#else
env->ReleaseStringChars(valueObj, valueStr);
#endif
fieldSlot->type = FIELD_TYPE_STRING;
fieldSlot->data.buffer.offset = offset;
fieldSlot->data.buffer.size = size;
LOG_WINDOW("%d,%d is TEXT with %u bytes @ %d", row, column, size, offset);
if (status) {
LOG_WINDOW("Failed to put string. error=%d", status);
return false;
}
LOG_WINDOW("%d,%d is TEXT with %u bytes", row, column, sizeIncludingNull);
return true;
}
static jboolean nativePutLong(JNIEnv* env, jclass clazz, jint windowPtr,
jlong value, jint row, jint column) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
if (!window->putLong(row, column, value)) {
LOG_WINDOW(" getFieldSlotWithCheck error ");
status_t status = window->putLong(row, column, value);
if (status) {
LOG_WINDOW("Failed to put long. error=%d", status);
return false;
}
@ -513,8 +449,10 @@ static jboolean nativePutLong(JNIEnv* env, jclass clazz, jint windowPtr,
static jboolean nativePutDouble(JNIEnv* env, jclass clazz, jint windowPtr,
jdouble value, jint row, jint column) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
if (!window->putDouble(row, column, value)) {
LOG_WINDOW(" getFieldSlotWithCheck error ");
status_t status = window->putDouble(row, column, value);
if (status) {
LOG_WINDOW("Failed to put double. error=%d", status);
return false;
}
@ -525,8 +463,10 @@ static jboolean nativePutDouble(JNIEnv* env, jclass clazz, jint windowPtr,
static jboolean nativePutNull(JNIEnv* env, jclass clazz, jint windowPtr,
jint row, jint column) {
CursorWindow* window = reinterpret_cast<CursorWindow*>(windowPtr);
if (!window->putNull(row, column)) {
LOG_WINDOW(" getFieldSlotWithCheck error ");
status_t status = window->putNull(row, column);
if (status) {
LOG_WINDOW("Failed to put null. error=%d", status);
return false;
}
@ -537,14 +477,14 @@ static jboolean nativePutNull(JNIEnv* env, jclass clazz, jint windowPtr,
static JNINativeMethod sMethods[] =
{
/* name, signature, funcPtr */
{ "nativeInitializeEmpty", "(IZ)I",
(void*)nativeInitializeEmpty },
{ "nativeInitializeFromBinder", "(Landroid/os/IBinder;)I",
(void*)nativeInitializeFromBinder },
{ "nativeCreate", "(Ljava/lang/String;IZ)I",
(void*)nativeCreate },
{ "nativeCreateFromParcel", "(Landroid/os/Parcel;)I",
(void*)nativeCreateFromParcel },
{ "nativeDispose", "(I)V",
(void*)nativeDispose },
{ "nativeGetBinder", "(I)Landroid/os/IBinder;",
(void*)nativeGetBinder },
{ "nativeWriteToParcel", "(ILandroid/os/Parcel;)V",
(void*)nativeWriteToParcel },
{ "nativeClear", "(I)V",
(void*)nativeClear },
{ "nativeGetNumRows", "(I)I",

78
core/jni/android_database_SQLiteQuery.cpp
View File

@ -61,7 +61,8 @@ static jint nativeFillWindow(JNIEnv* env, jclass clazz, jint databasePtr,
window->getNumRows(), window->size(), window->freeSpace());
int numColumns = sqlite3_column_count(statement);
if (!window->setNumColumns(numColumns)) {
status_t status = window->setNumColumns(numColumns);
if (status) {
LOGE("Failed to change column count from %d to %d", window->getNumColumns(), numColumns);
jniThrowException(env, "java/lang/IllegalStateException", "numColumns mismatch");
return 0;
@ -88,10 +89,10 @@ static jint nativeFillWindow(JNIEnv* env, jclass clazz, jint databasePtr,
// Allocate a new field directory for the row. This pointer is not reused
// since it may be possible for it to be relocated on a call to alloc() when
// the field data is being allocated.
field_slot_t* fieldDir = window->allocRow();
if (!fieldDir) {
LOG_WINDOW("Failed allocating fieldDir at startPos %d row %d",
startPos, addedRows);
status = window->allocRow();
if (status) {
LOG_WINDOW("Failed allocating fieldDir at startPos %d row %d, error=%d",
startPos, addedRows, status);
windowFull = true;
continue;
}
@ -101,37 +102,28 @@ static jint nativeFillWindow(JNIEnv* env, jclass clazz, jint databasePtr,
int type = sqlite3_column_type(statement, i);
if (type == SQLITE_TEXT) {
// TEXT data
#if WINDOW_STORAGE_UTF8
const uint8_t* text = reinterpret_cast<const uint8_t*>(
const char* text = reinterpret_cast<const char*>(
sqlite3_column_text(statement, i));
// SQLite does not include the NULL terminator in size, but does
// ensure all strings are NULL terminated, so increase size by
// one to make sure we store the terminator.
size_t size = sqlite3_column_bytes(statement, i) + 1;
#else
const uint8_t* text = reinterpret_cast<const uint8_t*>(
sqlite3_column_text16(statement, i));
size_t size = sqlite3_column_bytes16(statement, i);
#endif
int offset = window->alloc(size);
if (!offset) {
LOG_WINDOW("Failed allocating %u bytes for text/blob at %d,%d", size,
startPos + addedRows, i);
size_t sizeIncludingNull = sqlite3_column_bytes(statement, i) + 1;
status = window->putString(addedRows, i, text, sizeIncludingNull);
if (status) {
LOG_WINDOW("Failed allocating %u bytes for text at %d,%d, error=%d",
sizeIncludingNull, startPos + addedRows, i, status);
windowFull = true;
break;
}
window->copyIn(offset, text, size);
field_slot_t* fieldSlot = window->getFieldSlot(addedRows, i);
fieldSlot->type = FIELD_TYPE_STRING;
fieldSlot->data.buffer.offset = offset;
fieldSlot->data.buffer.size = size;
LOG_WINDOW("%d,%d is TEXT with %u bytes", startPos + addedRows, i, size);
LOG_WINDOW("%d,%d is TEXT with %u bytes",
startPos + addedRows, i, sizeIncludingNull);
} else if (type == SQLITE_INTEGER) {
// INTEGER data
int64_t value = sqlite3_column_int64(statement, i);
if (!window->putLong(addedRows, i, value)) {
LOG_WINDOW("Failed allocating space for a long in column %d", i);
status = window->putLong(addedRows, i, value);
if (status) {
LOG_WINDOW("Failed allocating space for a long in column %d, error=%d",
i, status);
windowFull = true;
break;
}
@ -139,35 +131,33 @@ static jint nativeFillWindow(JNIEnv* env, jclass clazz, jint databasePtr,
} else if (type == SQLITE_FLOAT) {
// FLOAT data
double value = sqlite3_column_double(statement, i);
if (!window->putDouble(addedRows, i, value)) {
LOG_WINDOW("Failed allocating space for a double in column %d", i);
status = window->putDouble(addedRows, i, value);
if (status) {
LOG_WINDOW("Failed allocating space for a double in column %d, error=%d",
i, status);
windowFull = true;
break;
}
LOG_WINDOW("%d,%d is FLOAT %lf", startPos + addedRows, i, value);
} else if (type == SQLITE_BLOB) {
// BLOB data
uint8_t const * blob = (uint8_t const *)sqlite3_column_blob(statement, i);
size_t size = sqlite3_column_bytes16(statement, i);
int offset = window->alloc(size);
if (!offset) {
LOG_WINDOW("Failed allocating %u bytes for blob at %d,%d", size,
startPos + addedRows, i);
const void* blob = sqlite3_column_blob(statement, i);
size_t size = sqlite3_column_bytes(statement, i);
status = window->putBlob(addedRows, i, blob, size);
if (status) {
LOG_WINDOW("Failed allocating %u bytes for blob at %d,%d, error=%d",
size, startPos + addedRows, i, status);
windowFull = true;
break;
}
window->copyIn(offset, blob, size);
field_slot_t* fieldSlot = window->getFieldSlot(addedRows, i);
fieldSlot->type = FIELD_TYPE_BLOB;
fieldSlot->data.buffer.offset = offset;
fieldSlot->data.buffer.size = size;
LOG_WINDOW("%d,%d is Blob with %u bytes @ %d",
startPos + addedRows, i, size, offset);
LOG_WINDOW("%d,%d is Blob with %u bytes",
startPos + addedRows, i, size);
} else if (type == SQLITE_NULL) {
// NULL field
if (!window->putNull(addedRows, i)) {
LOG_WINDOW("Failed allocating space for a null in column %d", i);
status = window->putNull(addedRows, i);
if (status) {
LOG_WINDOW("Failed allocating space for a null in column %d, error=%d",
i, status);
windowFull = true;
break;
}

299
include/binder/CursorWindow.h
View File

@ -21,18 +21,8 @@
#include <stddef.h>
#include <stdint.h>
#include <binder/IMemory.h>
#include <utils/RefBase.h>
#define DEFAULT_WINDOW_SIZE 4096
#define WINDOW_ALLOCATION_SIZE 4096
#define ROW_SLOT_CHUNK_NUM_ROWS 16
// Row slots are allocated in chunks of ROW_SLOT_CHUNK_NUM_ROWS,
// with an offset after the rows that points to the next chunk
#define ROW_SLOT_CHUNK_SIZE ((ROW_SLOT_CHUNK_NUM_ROWS * sizeof(row_slot_t)) + sizeof(uint32_t))
#include <binder/Parcel.h>
#include <utils/String8.h>
#if LOG_NDEBUG
@ -46,176 +36,157 @@
#endif
// When defined to true strings are stored as UTF8, otherwise they're UTF16
#define WINDOW_STORAGE_UTF8 1
// When defined to true numberic values are stored inline in the field_slot_t, otherwise they're allocated in the window
#define WINDOW_STORAGE_INLINE_NUMERICS 1
namespace android {
typedef struct
{
uint32_t numRows;
uint32_t numColumns;
} window_header_t;
typedef struct
{
uint32_t offset;
} row_slot_t;
typedef struct
{
uint8_t type;
union {
double d;
int64_t l;
struct {
uint32_t offset;
uint32_t size;
} buffer;
} data;
} __attribute__((packed)) field_slot_t;
#define FIELD_TYPE_NULL 0
#define FIELD_TYPE_INTEGER 1
#define FIELD_TYPE_FLOAT 2
#define FIELD_TYPE_STRING 3
#define FIELD_TYPE_BLOB 4
/**
* This class stores a set of rows from a database in a buffer. The begining of the
* window has first chunk of row_slot_ts, which are offsets to the row directory, followed by
* an offset to the next chunk in a linked-list of additional chunk of row_slot_ts in case
* 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
* field_slot_t per column, which has the size, offset, and type of the data for that field.
* 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
{
class CursorWindow {
CursorWindow(const String8& name, int ashmemFd,
void* data, size_t size, bool readOnly);
public:
CursorWindow(size_t maxSize);
CursorWindow(){}
bool setMemory(const sp<IMemory>&);
~CursorWindow();
/* Field types. */
enum {
FIELD_TYPE_NULL = 0,
FIELD_TYPE_INTEGER = 1,
FIELD_TYPE_FLOAT = 2,
FIELD_TYPE_STRING = 3,
FIELD_TYPE_BLOB = 4,
};
bool initBuffer(bool localOnly);
sp<IMemory> getMemory() {return mMemory;}
/* 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;
size_t size() {return mSize;}
uint8_t * data() {return mData;}
uint32_t getNumRows() {return mHeader->numRows;}
uint32_t getNumColumns() {return mHeader->numColumns;}
void freeLastRow() {
if (mHeader->numRows > 0) {
mHeader->numRows--;
}
}
bool setNumColumns(uint32_t numColumns)
{
uint32_t cur = mHeader->numColumns;
if (cur > 0 && cur != numColumns) {
LOGE("Trying to go from %d columns to %d", cur, numColumns);
return false;
}
mHeader->numColumns = numColumns;
return true;
}
friend class CursorWindow;
} __attribute((packed));
int32_t freeSpace();
~CursorWindow();
void clear();
static status_t create(const String8& name, size_t size, bool localOnly,
CursorWindow** outCursorWindow);
static status_t createFromParcel(Parcel* parcel, CursorWindow** outCursorWindow);
/**
* Allocate a row slot and its directory. The returned
* pointer points to the begining of the row's directory
* or NULL if there wasn't room. The directory is
* initialied with NULL entries for each field.
*/
field_slot_t * allocRow();
status_t writeToParcel(Parcel* parcel);
/**
* 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);
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; }
/**
* Copy data into the window at the given offset.
*/
void copyIn(uint32_t offset, uint8_t const * data, size_t size);
void copyIn(uint32_t offset, int64_t data);
void copyIn(uint32_t offset, double data);
void copyOut(uint32_t offset, uint8_t * data, size_t size);
int64_t copyOutLong(uint32_t offset);
double copyOutDouble(uint32_t offset);
bool putLong(unsigned int row, unsigned int col, int64_t value);
bool putDouble(unsigned int row, unsigned int col, double value);
bool putNull(unsigned int row, unsigned int col);
bool getLong(unsigned int row, unsigned int col, int64_t * valueOut);
bool getDouble(unsigned int row, unsigned int col, double * valueOut);
bool getNull(unsigned int row, unsigned int col, bool * valueOut);
uint8_t * offsetToPtr(uint32_t offset) {return mData + offset;}
row_slot_t * allocRowSlot();
row_slot_t * getRowSlot(int row);
/**
* return NULL if Failed to find rowSlot or
* Invalid rowSlot
*/
field_slot_t * getFieldSlotWithCheck(int row, int column);
field_slot_t * getFieldSlot(int row, int column)
{
int fieldDirOffset = getRowSlot(row)->offset;
return ((field_slot_t *)offsetToPtr(fieldDirOffset)) + column;
}
int64_t getFieldSlotValueLong(field_slot_t* fieldSlot) {
#if WINDOW_STORAGE_INLINE_NUMERICS
return fieldSlot->data.l;
#else
return copyOutLong(fieldSlot->data.buffer.offset);
#endif
}
double getFieldSlotValueDouble(field_slot_t* fieldSlot) {
#if WINDOW_STORAGE_INLINE_NUMERICS
return fieldSlot->data.d;
#else
return copyOutDouble(fieldSlot->data.buffer.offset);
#endif
}
#if WINDOW_STORAGE_UTF8
char* getFieldSlotValueString(field_slot_t* fieldSlot) {
return reinterpret_cast<char*>(offsetToPtr(fieldSlot->data.buffer.offset));
}
#else
char16_t* getFieldSlotValueString(field_slot_t* fieldSlot) {
return reinterpret_cast<char16_t*>(offsetToPtr(fieldSlot->data.buffer.offset));
}
#endif
private:
uint8_t * mData;
size_t mSize;
size_t mMaxSize;
window_header_t * mHeader;
sp<IMemory> mMemory;
status_t clear();
status_t setNumColumns(uint32_t numColumns);
/**
* Offset of the lowest unused data byte in the array.
* Allocate a row slot and its directory.
* The row is initialized will null entries for each field.
*/
uint32_t mFreeOffset;
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

506
libs/binder/CursorWindow.cpp
View File

@ -19,8 +19,9 @@
#include <utils/Log.h>
#include <binder/CursorWindow.h>
#include <binder/MemoryHeapBase.h>
#include <binder/MemoryBase.h>
#include <cutils/ashmem.h>
#include <sys/mman.h>
#include <assert.h>
#include <string.h>
@ -28,350 +29,325 @@
namespace android {
CursorWindow::CursorWindow(size_t maxSize) :
mMaxSize(maxSize)
{
CursorWindow::CursorWindow(const String8& name, int ashmemFd,
void* data, size_t size, bool readOnly) :
mName(name), mAshmemFd(ashmemFd), mData(data), mSize(size), mReadOnly(readOnly) {
mHeader = static_cast<Header*>(mData);
}
bool CursorWindow::setMemory(const sp<IMemory>& memory)
{
mMemory = memory;
mData = (uint8_t *) memory->pointer();
if (mData == NULL) {
return false;
}
mHeader = (window_header_t *) mData;
// Make the window read-only
ssize_t size = memory->size();
mSize = size;
mMaxSize = size;
mFreeOffset = size;
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);
return true;
CursorWindow::~CursorWindow() {
::munmap(mData, mSize);
::close(mAshmemFd);
}
bool CursorWindow::initBuffer(bool localOnly)
{
//TODO Use a non-memory dealer mmap region for localOnly
status_t CursorWindow::create(const String8& name, size_t size, bool localOnly,
CursorWindow** outCursorWindow) {
String8 ashmemName("CursorWindow: ");
ashmemName.append(name);
ashmemName.append(localOnly ? " (local)" : " (remote)");
sp<MemoryHeapBase> heap;
heap = new MemoryHeapBase(mMaxSize, 0, "CursorWindow");
if (heap != NULL) {
mMemory = new MemoryBase(heap, 0, mMaxSize);
if (mMemory != NULL) {
mData = (uint8_t *) mMemory->pointer();
if (mData) {
mHeader = (window_header_t *) mData;
mSize = mMaxSize;
// Put the window into a clean state
clear();
LOG_WINDOW("Created CursorWindow with new MemoryDealer: mFreeOffset = %d, mSize = %d, mMaxSize = %d, mData = %p", mFreeOffset, mSize, mMaxSize, mData);
return true;
}
}
LOGE("CursorWindow heap allocation failed");
return false;
status_t result;
int ashmemFd = ashmem_create_region(ashmemName.string(), size);
if (ashmemFd < 0) {
result = -errno;
} else {
LOGE("failed to create the CursorWindow heap");
return false;
result = ashmem_set_prot_region(ashmemFd, PROT_READ | PROT_WRITE);
if (result >= 0) {
void* data = ::mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, ashmemFd, 0);
if (data == MAP_FAILED) {
result = -errno;
} else {
result = ashmem_set_prot_region(ashmemFd, PROT_READ);
if (result >= 0) {
CursorWindow* window = new CursorWindow(name, ashmemFd,
data, size, false /*readOnly*/);
result = window->clear();
if (!result) {
LOG_WINDOW("Created new CursorWindow: freeOffset=%d, "
"numRows=%d, numColumns=%d, mSize=%d, mData=%p",
window->mHeader->freeOffset,
window->mHeader->numRows,
window->mHeader->numColumns,
window->mSize, window->mData);
*outCursorWindow = window;
return OK;
}
delete window;
}
}
::munmap(data, size);
}
::close(ashmemFd);
}
*outCursorWindow = NULL;
return result;
}
CursorWindow::~CursorWindow()
{
// Everything that matters is a smart pointer
status_t CursorWindow::createFromParcel(Parcel* parcel, CursorWindow** outCursorWindow) {
String8 name = parcel->readString8();
status_t result;
int ashmemFd = parcel->readFileDescriptor();
if (ashmemFd == int(BAD_TYPE)) {
result = BAD_TYPE;
} else {
ssize_t size = ashmem_get_size_region(ashmemFd);
if (size < 0) {
result = UNKNOWN_ERROR;
} else {
int dupAshmemFd = ::dup(ashmemFd);
if (dupAshmemFd < 0) {
result = -errno;
} else {
void* data = ::mmap(NULL, size, PROT_READ, MAP_SHARED, dupAshmemFd, 0);
if (data == MAP_FAILED) {
result = -errno;
} else {
CursorWindow* window = new CursorWindow(name, dupAshmemFd,
data, size, true /*readOnly*/);
LOG_WINDOW("Created CursorWindow from parcel: freeOffset=%d, "
"numRows=%d, numColumns=%d, mSize=%d, mData=%p",
window->mHeader->freeOffset,
window->mHeader->numRows,
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

4
libs/binder/Parcel.cpp
View File

@ -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) {