GT-3341_emteere_RTTIPerformance Code Review changes

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/analysis/EmbeddedMediaAnalyzer.java

@@ -22,7 +22,8 @@ import ghidra.app.cmd.data.CreateDataCmd;
 import ghidra.app.services.*;
 import ghidra.app.util.importer.MessageLog;
 import ghidra.framework.options.Options;
-import ghidra.program.model.address.*;
+import ghidra.program.model.address.Address;
+import ghidra.program.model.address.AddressSetView;
 import ghidra.program.model.data.*;
 import ghidra.program.model.listing.BookmarkType;
 import ghidra.program.model.listing.Program;
@@ -56,7 +57,10 @@ public class EmbeddedMediaAnalyzer extends AbstractAnalyzer {
 
 		Memory memory = program.getMemory();
 		AddressSetView validMemorySet = memory.getLoadedAndInitializedAddressSet();
-		AddressSet searchSet = set.intersect(validMemorySet);
+		if (validMemorySet.isEmpty()) {
+			return false;  // valid addresses to search
+		}
+		AddressSetView searchSet = set.intersect(validMemorySet);
 
 		MemoryBytePatternSearcher searcher = new MemoryBytePatternSearcher("Embedded Media");
 

Ghidra/Features/Base/src/main/java/ghidra/util/bytesearch/MemoryBytePatternSearcher.java

@@ -94,7 +94,7 @@ public class MemoryBytePatternSearcher {
 	 * Call associated action for each pattern matched.
 	 * 
 	 * @param program to be searched
-	 * @param searchSet set of bytes to restrict search to
+	 * @param searchSet set of bytes to restrict search, if null or empty then search all memory blocks
 	 * @param monitor allow canceling and reporting of progress
 	 * 
 	 * @throws CancelledException if canceled

Ghidra/Features/BytePatterns/src/main/java/ghidra/app/analyzers/FunctionStartAnalyzer.java

@@ -716,43 +716,13 @@ public class FunctionStartAnalyzer extends AbstractAnalyzer implements PatternFa
 	 */
 	private boolean checkForExecuteBlock(Program program) {
 		MemoryBlock[] blocks = program.getMemory().getBlocks();
-		boolean hasExecutable = false;
 
 		for (MemoryBlock block : blocks) {
 			if (block.isExecute()) {
-				hasExecutable = true;
+				return true;
 			}
 		}
-		return hasExecutable;
-	}
-
-	/**
-	 * Get rid of any blocks from the address set that shouldn't be searched.
-	 *  Non-executable and non-initialized.
-	 *
-	 * @param program program
-	 * @param bset current set of restricted address ranges
-	 * @return return new set with blocks not to be searched removed
-	 */
-	private AddressSet removeNotSearchedAddresses(Program program, AddressSetView bset) {
-		AddressSet restrictedSet = new AddressSet(bset);
-		MemoryBlock[] blocks = program.getMemory().getBlocks();
-		boolean hasExecutable = checkForExecuteBlock(program);
-
-		for (MemoryBlock block : blocks) {
-			if (!block.isInitialized()) {
-				restrictedSet.deleteRange(block.getStart(), block.getEnd());
-				continue;
-			}
-			// if 
-			if (executableBlocksOnly && hasExecutable) {
-				if (!block.isExecute()) {
-					restrictedSet.deleteRange(block.getStart(), block.getEnd());
-					continue;
-				}
-			}
-		}
-		return restrictedSet;
+		return false;
 	}
 
 	@Override

Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/rtti/CreateVfTableBackgroundCmd.java

@@ -15,7 +15,7 @@
  */
 package ghidra.app.cmd.data.rtti;
 
-import static ghidra.app.util.datatype.microsoft.MSDataTypeUtils.getAbsoluteAddress;
+import static ghidra.app.util.datatype.microsoft.MSDataTypeUtils.*;
 
 import ghidra.app.cmd.data.*;
 import ghidra.app.util.datatype.microsoft.DataApplyOptions;
@@ -172,9 +172,8 @@ public class CreateVfTableBackgroundCmd extends AbstractCreateDataBackgroundCmd<
 		if (rtti0Model != null) {
 
 			// Plate Comment
-			EHDataTypeUtilities.createPlateCommentIfNeeded(program,
-				RttiUtil.CONST_PREFIX + RttiUtil.getDescriptorTypeNamespace(rtti0Model) +
-					Namespace.DELIMITER,
+			EHDataTypeUtilities.createPlateCommentIfNeeded(program, RttiUtil.CONST_PREFIX +
+				RttiUtil.getDescriptorTypeNamespace(rtti0Model) + Namespace.DELIMITER,
 				VF_TABLE_LABEL, null, vfTableAddress, applyOptions);
 
 			monitor.checkCanceled();
@@ -188,7 +187,7 @@ public class CreateVfTableBackgroundCmd extends AbstractCreateDataBackgroundCmd<
 
 		// Create functions that are referred to by the vf table.
 		if (applyOptions.shouldCreateFunction()) {
-			int elementCount = model.getElementCount();
+			int elementCount = model.getCount();
 			for (int tableElementIndex = 0; tableElementIndex < elementCount; tableElementIndex++) {
 				monitor.checkCanceled();
 				Address vfPointer = model.getVirtualFunctionPointer(tableElementIndex);

Ghidra/Features/MicrosoftCodeAnalyzer/src/main/java/ghidra/app/cmd/data/rtti/VfTableModel.java

@@ -40,7 +40,6 @@ public class VfTableModel extends AbstractCreateDataTypeModel {
 
 	private DataType dataType;
 	private Rtti4Model rtti4Model;
-	private int elementCount = -1;
 
 	private Program lastProgram;
 	private DataType lastDataType;
@@ -57,8 +56,6 @@ public class VfTableModel extends AbstractCreateDataTypeModel {
 			DataValidationOptions validationOptions) {
 		super(program, RttiUtil.getVfTableCount(program, vfTableAddress), vfTableAddress,
 			validationOptions);
-		// super's count will hold the number of valid address elements from getVfTableCount()
-		elementCount = getCount();
 	}
 
 	@Override
@@ -82,7 +79,7 @@ public class VfTableModel extends AbstractCreateDataTypeModel {
 		long entrySize = individualEntryDataType.getLength();
 
 		// Each entry is a pointer to where a function can possibly be created.
-		long numEntries = getElementCount();
+		long numEntries = getCount();
 		if (numEntries == 0) {
 			throw new InvalidDataTypeException(
 				getName() + " data type at " + getAddress() + " doesn't have a valid vf table.");
@@ -125,7 +122,7 @@ public class VfTableModel extends AbstractCreateDataTypeModel {
 			lastDataType = null;
 			lastElementCount = -1;
 
-			lastElementCount = getElementCount();
+			lastElementCount = getCount();
 			if (lastElementCount > 0) {
 				DataTypeManager dataTypeManager = program.getDataTypeManager();
 				PointerDataType pointerDt = new PointerDataType(dataTypeManager);
@@ -170,17 +167,6 @@ public class VfTableModel extends AbstractCreateDataTypeModel {
 		return getAbsoluteAddress(getProgram(), address);
 	}
 
-	/**
-	 * Gets the number of elements in the vf table. Returns 0 if this model isn't for a valid vf table.
-	 * @return the number of vf table elements or 0.
-	 */
-	public int getElementCount() {
-		if (elementCount == -1) {
-			elementCount = RttiUtil.getVfTableCount(getProgram(), getAddress());
-		}
-		return elementCount;
-	}
-
 	/**
 	 * Gets the type descriptor (RTTI 0) model associated with this vf table.
 	 * @return the type descriptor (RTTI 0) model or null.