From bc3e3c54fba45125f3ab2e27a6add43ceaa8f49e Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Sat, 18 Sep 2010 17:04:32 +0000
Subject: Better unlocking behavior when exceptions are r...

Better unlocking behavior when exceptions are raised. Review by moors.
---
 src/compiler/scala/tools/nsc/symtab/Symbols.scala     | 7 +++++--
 src/compiler/scala/tools/nsc/typechecker/Typers.scala | 7 ++++---
 2 files changed, 9 insertions(+), 5 deletions(-)

(limited to 'src/compiler')

diff --git a/src/compiler/scala/tools/nsc/symtab/Symbols.scala b/src/compiler/scala/tools/nsc/symtab/Symbols.scala
index 8d02a120d3..ab79f735b4 100644
--- a/src/compiler/scala/tools/nsc/symtab/Symbols.scala
+++ b/src/compiler/scala/tools/nsc/symtab/Symbols.scala
@@ -27,6 +27,9 @@ trait Symbols extends reflect.generic.Symbols { self: SymbolTable =>
   /** Used for deciding in the IDE whether we can interrupt the compiler */
   protected var activeLocks = 0
 
+  /** Used for debugging only */
+  protected var lockedSyms = collection.immutable.Set[Symbol]()
+
   /** Used to keep track of the recursion depth on locked symbols */
   private var recursionTable = Map.empty[Symbol, Int]
 
@@ -718,6 +721,7 @@ trait Symbols extends reflect.generic.Symbols { self: SymbolTable =>
         assert(infos.prev eq null, this.name)
         val tp = infos.info
         //if (settings.debug.value) System.out.println("completing " + this.rawname + tp.getClass());//debug
+
         if ((rawflags & LOCKED) != 0L) { // rolled out once for performance
           lock {
             setInfo(ErrorType)
@@ -731,9 +735,8 @@ trait Symbols extends reflect.generic.Symbols { self: SymbolTable =>
         try {
           phase = phaseOf(infos.validFrom)
           tp.complete(this)
-          // if (settings.debug.value && runId(validTo) == currentRunId) System.out.println("completed " + this/* + ":" + info*/);//DEBUG
-          unlock()
         } finally {
+          unlock()
           phase = current
         }
         cnt += 1
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala
index f793da0c54..52ea62e656 100644
--- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala
+++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala
@@ -358,13 +358,13 @@ trait Typers { self: Analyzer =>
       }
     }
 
-    def checkNonCyclic(pos: Position, tp: Type, lockedSym: Symbol): Boolean = {
+    def checkNonCyclic(pos: Position, tp: Type, lockedSym: Symbol): Boolean = try {
       lockedSym.lock {
         throw new TypeError("illegal cyclic reference involving " + lockedSym)
       }
-      val result = checkNonCyclic(pos, tp)
+      checkNonCyclic(pos, tp)
+    } finally {
       lockedSym.unlock()
-      result
     }
 
     def checkNonCyclic(sym: Symbol) {
@@ -697,6 +697,7 @@ trait Typers { self: Analyzer =>
     /** The member with given name of given qualifier tree */
     def member(qual: Tree, name: Name) = qual.tpe match {
       case ThisType(clazz) if (context.enclClass.owner.hasTransOwner(clazz)) =>
+      	// println("member")
         qual.tpe.member(name)
       case _  =>
         if (phase.next.erasedTypes) qual.tpe.member(name)
-- 
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