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changeset 11774:f6eb4866d558

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G1 Barriers: don't use ANY_LOCATION
author Bernhard Urban <bernhard.urban@jku.at>
date Tue, 24 Sep 2013 16:08:07 +0200
parents 4e2be0ab31a9
children b04b94b71649 f3e5cbd1efae
files graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java
diffstat 1 files changed, 12 insertions(+), 10 deletions(-) [+]
line wrap: on
line diff
--- a/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Tue Sep 24 14:11:38 2013 +0200
+++ b/graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/replacements/WriteBarrierSnippets.java	Tue Sep 24 16:08:07 2013 +0200
@@ -63,6 +63,8 @@
                     "Number of G1 effective Ref Field Read Barriers");
 
     private static final LocationIdentity GC_CARD_LOCATION = new NamedLocationIdentity("GC-Card");
+    private static final LocationIdentity GC_LOG_LOCATION = new NamedLocationIdentity("GC-Log");
+    private static final LocationIdentity GC_INDEX_LOCATION = new NamedLocationIdentity("GC-Index");
 
     @Snippet
     public static void serialWriteBarrier(Object object, Object location, @ConstantParameter boolean usePrecise, @ConstantParameter boolean alwaysNull) {
@@ -161,8 +163,8 @@
                     Word nextIndex = indexValue.subtract(wordSize());
                     Word logAddress = bufferAddress.add(nextIndex);
                     // Log the object to be marked as well as update the SATB's buffer next index.
-                    logAddress.writeWord(0, previousOop);
-                    indexAddress.writeWord(0, nextIndex);
+                    logAddress.writeWord(0, previousOop, GC_LOG_LOCATION);
+                    indexAddress.writeWord(0, nextIndex, GC_INDEX_LOCATION);
                 } else {
                     g1PreBarrierStub(G1WBPRECALL, previousOop.toObject());
                 }
@@ -223,7 +225,7 @@
                 if (probability(LIKELY_PROBABILITY, cardByte != (byte) 0)) {
                     g1EffectivePostWriteBarrierCounter.inc();
                     log(trace, "[%d] G1-Post Thread: %p Card: %p \n", gcCycle, thread.rawValue(), Word.unsigned(cardByte).rawValue());
-                    cardAddress.writeByte(0, (byte) 0);
+                    cardAddress.writeByte(0, (byte) 0, GC_CARD_LOCATION);
                     // If the thread local card queue is full, issue a native call which will
                     // initialize a new one and add the card entry.
                     if (probability(FREQUENT_PROBABILITY, indexValue.notEqual(0))) {
@@ -231,8 +233,8 @@
                         Word logAddress = bufferAddress.add(nextIndex);
                         // Log the object to be scanned as well as update
                         // the card queue's next index.
-                        logAddress.writeWord(0, cardAddress);
-                        indexAddress.writeWord(0, nextIndex);
+                        logAddress.writeWord(0, cardAddress, GC_LOG_LOCATION);
+                        indexAddress.writeWord(0, nextIndex, GC_INDEX_LOCATION);
                     } else {
                         g1PostBarrierStub(G1WBPOSTCALL, cardAddress);
                     }
@@ -266,8 +268,8 @@
                     indexValue = indexValue - wordSize();
                     Word logAddress = bufferAddress.add(Word.unsigned(indexValue));
                     // Log the object to be marked as well as update the SATB's buffer next index.
-                    logAddress.writeWord(0, oop);
-                    indexAddress.writeWord(0, Word.unsigned(indexValue));
+                    logAddress.writeWord(0, oop, GC_LOG_LOCATION);
+                    indexAddress.writeWord(0, Word.unsigned(indexValue), GC_INDEX_LOCATION);
                 } else {
                     g1PreBarrierStub(G1WBPRECALL, oop.toObject());
                 }
@@ -300,7 +302,7 @@
             byte cardByte = cardAddress.readByte(0);
             // If the card is already dirty, (hence already enqueued) skip the insertion.
             if (cardByte != (byte) 0) {
-                cardAddress.writeByte(0, (byte) 0);
+                cardAddress.writeByte(0, (byte) 0, GC_CARD_LOCATION);
                 // If the thread local card queue is full, issue a native call which will
                 // initialize a new one and add the card entry.
                 if (indexValue != 0) {
@@ -308,8 +310,8 @@
                     Word logAddress = bufferAddress.add(Word.unsigned(indexValue));
                     // Log the object to be scanned as well as update
                     // the card queue's next index.
-                    logAddress.writeWord(0, cardAddress);
-                    indexAddress.writeWord(0, Word.unsigned(indexValue));
+                    logAddress.writeWord(0, cardAddress, GC_LOG_LOCATION);
+                    indexAddress.writeWord(0, Word.unsigned(indexValue), GC_INDEX_LOCATION);
                 } else {
                     g1PostBarrierStub(G1WBPOSTCALL, cardAddress);
                 }