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authoragl@chromium.org <agl@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2010-03-11 15:25:54 +0000
committeragl@chromium.org <agl@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98>2010-03-11 15:25:54 +0000
commitef73044e42948214832dd11dd3326b738f816eb6 (patch)
tree1105589709517fab2cc2ed5d745d82299d510f77 /base/dir_reader_fallback.h
parent6e240d7084c1cecc7fdedabe83f860659888dd2f (diff)
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POSIX: don't allocate memory after forking.
Previously we would allocate memory in the child process. However, the allocation might have happened while the malloc lock was held, resulting in a deadlock. This patch removes allocation from the child but probably makes Mac's startup time slower until a Mac person can implement dir_reader_posix.h. TEST=Unittest for new code BUG=36678 http://codereview.chromium.org/672003 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@41275 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'base/dir_reader_fallback.h')
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diff --git a/base/dir_reader_fallback.h b/base/dir_reader_fallback.h
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+++ b/base/dir_reader_fallback.h
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+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_DIR_READER_FALLBACK_H_
+#define BASE_DIR_READER_FALLBACK_H_
+
+namespace base {
+
+class DirReaderFallback {
+ public:
+ // Open a directory. If |IsValid| is true, then |Next| can be called to start
+ // the iteration at the beginning of the directory.
+ explicit DirReaderFallback(const char* directory_path) { }
+ // After construction, IsValid returns true iff the directory was
+ // successfully opened.
+ bool IsValid() const { return false; }
+ // Move to the next entry returning false if the iteration is complete.
+ bool Next() { return false; }
+ // Return the name of the current directory entry.
+ const char* name() { return 0;}
+ // Return the file descriptor which is being used.
+ int fd() const { return -1; }
+ // Returns true if this is a no-op fallback class (for testing).
+ static bool IsFallback() { return true; }
+};
+
+} // namespace base
+
+#endif // BASE_DIR_READER_FALLBACK_H_