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Code Issues Wiki Activity

Cache source elements to optimize search.

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This commit is contained in:
Mikhail Khodjaiants 2002-11-22 22:31:04 +00:00
parent d2726b6f54
commit 0a4fdc5cd3
2 changed files with 59 additions and 7 deletions
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4
debug/org.eclipse.cdt.debug.core/ChangeLog
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@ -1,3 +1,7 @@
2002-11-22 Mikhail Khodjaiants
Cache source elements to optimize search.
* CProjectSourceLocator.java
2002-11-22 Mikhail Khodjaiants
Fix in the source locator's search algorithm.
* CProjectSourceLocator.java

62
debug/org.eclipse.cdt.debug.core/src/org/eclipse/cdt/debug/internal/core/sourcelookup/CProjectSourceLocation.java
View file

@ -6,6 +6,8 @@
package org.eclipse.cdt.debug.internal.core.sourcelookup;
import java.io.File;
import java.util.HashMap;
import java.util.HashSet;
import org.eclipse.cdt.debug.core.sourcelookup.ICSourceLocation;
import org.eclipse.core.resources.IContainer;
@ -30,6 +32,10 @@ public class CProjectSourceLocation implements ICSourceLocation
*/
private IProject fProject;
private HashMap fCache = new HashMap( 20 );
private HashSet fNotFoundCache = new HashSet( 20 );
/**
* Constructor for CProjectSourceLocation.
*/
@ -43,15 +49,24 @@ public class CProjectSourceLocation implements ICSourceLocation
*/
public Object findSourceElement( String name ) throws CoreException
{
if ( getProject() != null )
Object result = null;
if ( getProject() != null && !notFoundCacheLookup( name ) )
{
File file = new File( name );
if ( file.isAbsolute() )
return findFileByAbsolutePath( name );
else
return findFileByRelativePath( getProject(), name );
result = cacheLookup( name );
if ( result == null )
{
result = doFindSourceElement( name );
if ( result != null )
{
cacheSourceElement( name, result );
}
}
if ( result == null )
{
cacheNotFound( name );
}
}
return null;
return result;
}
/* (non-Javadoc)
@ -86,6 +101,13 @@ public class CProjectSourceLocation implements ICSourceLocation
return fProject;
}
private Object doFindSourceElement( String name )
{
File file = new File( name );
return ( file.isAbsolute() ) ? findFileByAbsolutePath( name ) :
findFileByRelativePath( getProject(), name );
}
private Object findFileByAbsolutePath( String name )
{
IPath path = new Path( name );
@ -169,4 +191,30 @@ public class CProjectSourceLocation implements ICSourceLocation
return null;
}
private Object cacheLookup( String name )
{
return fCache.get( name );
}
private boolean notFoundCacheLookup( String name )
{
return fNotFoundCache.contains( name );
}
private void cacheSourceElement( String name, Object element )
{
fCache.put( name, element );
}
private void cacheNotFound( String name )
{
fNotFoundCache.add( name );
}
protected void dispose()
{
fCache.clear();
fNotFoundCache.clear();
}
}