### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.core.tests.model
Index: src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core.tests.model/src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java,v
retrieving revision 1.114
diff -u -r1.114 ReconcilerTests.java
--- src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java	14 Mar 2007 08:18:39 -0000	1.114
+++ src/org/eclipse/jdt/core/tests/model/ReconcilerTests.java	15 Mar 2007 12:11:35 -0000
@@ -2357,7 +2357,7 @@
 	);
 	this.workingCopy.reconcile(ICompilationUnit.NO_AST, false, null, null);
 	assertASTNodeEquals(
-		"Unexpected participant delta",
+		"Unexpected participant ast",
 		"package p1;\n" +
 		"import p2.*;\n" +
 		"public class X {\n" +
@@ -2383,7 +2383,7 @@
 	);
 	org.eclipse.jdt.core.dom.CompilationUnit ast = this.workingCopy.reconcile(AST.JLS3, false, null, null);
 	assertSame(
-		"Unexpected participant delta",
+		"Unexpected participant ast",
 		participant.ast,
 		ast
 	);
@@ -2521,6 +2521,40 @@
 		""
 	);
 }
+/*
+ * Ensures that a reconcile participant is not notified when a working copy is reconciled 
+ * and it was consistent and forcing problem detection is off
+ * (regression test for 177319 Annotation Processing (APT) affects eclipse speed)
+ */
+public void testReconcileParticipant09() throws CoreException {
+	this.workingCopy.makeConsistent(null);
+	new ReconcileParticipant() {
+		public void reconcile(ReconcileContext context) {
+			assertTrue("Participant should not be notified of a reconcile", false);
+		}
+	};
+	this.workingCopy.reconcile(ICompilationUnit.NO_AST, false/*don't force problem detection*/, null, null);
+}
+
+/*
+ * Ensures that a reconcile participant is notified when a working copy is reconciled 
+ * and it was consistent and forcing problem detection is on
+ */
+public void testReconcileParticipant10() throws CoreException {
+	this.workingCopy.makeConsistent(null);
+	final boolean[] participantReconciled = new boolean[1];
+	new ReconcileParticipant() {
+		public void reconcile(ReconcileContext context) {
+			participantReconciled[0] = true;
+		}
+	};
+	this.workingCopy.reconcile(ICompilationUnit.NO_AST, true/*force problem detection*/, null, null);
+	assertTrue(
+		"Participant should have been notified",
+		participantReconciled[0]
+	);
+}
+
 /**
  * Ensures that the reconciler reconciles the new contents with the current
  * contents, updating the structure of this reconciler's compilation
#P org.eclipse.jdt.core
Index: model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.core/model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java,v
retrieving revision 1.43
diff -u -r1.43 ReconcileWorkingCopyOperation.java
--- model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java	14 Mar 2007 08:18:47 -0000	1.43
+++ model/org/eclipse/jdt/internal/core/ReconcileWorkingCopyOperation.java	15 Mar 2007 12:11:36 -0000
@@ -86,8 +86,10 @@
 			// make working copy consistent if needed and compute AST if needed
 			makeConsistent(workingCopy, problemRequestor);
 
-			// notify reconcile participants
-			notifyParticipants(workingCopy);
+			// notify reconcile participants only if working copy was not consistent or if forcing problem detection
+			// (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=177319)
+			if (!wasConsistent || this.forceProblemDetection)
+				notifyParticipants(workingCopy);
 
 			// recreate ast if needed
 			if (this.ast == null && (this.astLevel > ICompilationUnit.NO_AST || this.resolveBindings))