Index: third_party/tcmalloc/chromium/src/base/spinlock_internal.h |
=================================================================== |
--- third_party/tcmalloc/chromium/src/base/spinlock_internal.h (revision 0) |
+++ third_party/tcmalloc/chromium/src/base/spinlock_internal.h (revision 0) |
@@ -0,0 +1,64 @@ |
+/* Copyright (c) 2010, Google Inc. |
+ * All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions are |
+ * met: |
+ * |
+ * * Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * * Redistributions in binary form must reproduce the above |
+ * copyright notice, this list of conditions and the following disclaimer |
+ * in the documentation and/or other materials provided with the |
+ * distribution. |
+ * * Neither the name of Google Inc. nor the names of its |
+ * contributors may be used to endorse or promote products derived from |
+ * this software without specific prior written permission. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ * |
+ * --- |
+ * This file is an internal part spinlock.cc and once.cc |
+ * It may not be used directly by code outside of //base. |
+ */ |
+ |
+#ifndef BASE_SPINLOCK_INTERNAL_H_ |
+#define BASE_SPINLOCK_INTERNAL_H_ |
+ |
+#include <config.h> |
+#include "base/basictypes.h" |
+#include "base/atomicops.h" |
+ |
+namespace base { |
+namespace internal { |
+ |
+// SpinLockWait() waits until it can perform one of several transitions from |
+// "from" to "to". It returns when it performs a transition where done==true. |
+struct SpinLockWaitTransition { |
+ int32 from; |
+ int32 to; |
+ bool done; |
+}; |
+ |
+// Wait until *w can transition from trans[i].from to trans[i].to for some i |
+// satisfying 0<=i<n && trans[i].done, atomically make the transition, |
+// then return the old value of *w. Make any other atomic tranistions |
+// where !trans[i].done, but continue waiting. |
+int32 SpinLockWait(volatile Atomic32 *w, int n, |
+ const SpinLockWaitTransition trans[]); |
+void SpinLockWake(volatile Atomic32 *w, bool all); |
+void SpinLockDelay(volatile Atomic32 *w, int32 value, int loop); |
+ |
+} // namespace internal |
+} // namespace base |
+#endif |
Property changes on: third_party/tcmalloc/chromium/src/base/spinlock_internal.h |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |