From 46f57beaa64354376e6af3efdd895ccf1763ffc4 Mon Sep 17 00:00:00 2001
From: "vegorov@chromium.org"
 <vegorov@chromium.org@ce2b1a6d-e550-0410-aec6-3dcde31c8c00>
Date: Fri, 25 Feb 2011 15:00:46 +0000
Subject: [PATCH] Flush watermarks after compacting map space on mark-sweep
 collection.

MapCompact does not use MC-allocation routines so watermarks are not updated automatically and might become inconsistent.

BUG=http://crbug.com/59688

Review URL: http://codereview.chromium.org/6588007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@6954 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
---
 src/spaces.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/spaces.h b/src/spaces.h
index 4f2d07b0c8..6165255fd4 100644
--- a/src/spaces.h
+++ b/src/spaces.h
@@ -2121,6 +2121,12 @@ class MapSpace : public FixedSpace {
     accounting_stats_.DeallocateBytes(accounting_stats_.Size());
     accounting_stats_.AllocateBytes(new_size);
 
+    // Flush allocation watermarks.
+    for (Page* p = first_page_; p != top_page; p = p->next_page()) {
+      p->SetAllocationWatermark(p->AllocationTop());
+    }
+    top_page->SetAllocationWatermark(new_top);
+
 #ifdef DEBUG
     if (FLAG_enable_slow_asserts) {
       intptr_t actual_size = 0;