From fea0b9617466710b4961623de0e7a34846e88cbe Mon Sep 17 00:00:00 2001
From: "jsbell@chromium.org"
 <jsbell@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>
Date: Mon, 29 Oct 2012 21:36:22 +0000
Subject: Add IDMap::Clear() which removes all items.

Includes unit tests.

R=brettw@chromium.org


Review URL: https://chromiumcodereview.appspot.com/11266017

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@164742 0039d316-1c4b-4281-b951-d872f2087c98
---
 base/id_map.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'base/id_map.h')

diff --git a/base/id_map.h b/base/id_map.h
index bb9f05b..d3fc7b8 100644
--- a/base/id_map.h
+++ b/base/id_map.h
@@ -92,6 +92,17 @@ class IDMap : public base::NonThreadSafe {
     }
   }
 
+  void Clear() {
+    DCHECK(CalledOnValidThread());
+    if (iteration_depth_ == 0) {
+      Releaser<OS, 0>::release_all(&data_);
+    } else {
+      for (typename HashTable::iterator i = data_.begin();
+           i != data_.end(); ++i)
+        removed_ids_.insert(i->first);
+    }
+  }
+
   bool IsEmpty() const {
     DCHECK(CalledOnValidThread());
     return size() == 0u;
-- 
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