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authorMathias Agopian <mathias@google.com>2010-07-14 17:59:35 -0700
committerMathias Agopian <mathias@google.com>2010-07-14 17:59:35 -0700
commit08e83bb3b7cc41f603867acbeb1168019cf535fe (patch)
tree79594e01ef6c3306b890cb944d6f15d3098075c4 /services/surfaceflinger/Barrier.h
parentc9a11088e503b9e3ae52a3f671b2d21f5cd54f06 (diff)
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move native services under services/
moved surfaceflinger, audioflinger, cameraservice all native services should now reside in this location. Change-Id: Iee42b83dd2a94c3bf5107ab0895fe2dfcd5337a8
Diffstat (limited to 'services/surfaceflinger/Barrier.h')
-rw-r--r--services/surfaceflinger/Barrier.h55
1 files changed, 55 insertions, 0 deletions
diff --git a/services/surfaceflinger/Barrier.h b/services/surfaceflinger/Barrier.h
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+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_BARRIER_H
+#define ANDROID_BARRIER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <utils/threads.h>
+
+namespace android {
+
+class Barrier
+{
+public:
+ inline Barrier() : state(CLOSED) { }
+ inline ~Barrier() { }
+ void open() {
+ Mutex::Autolock _l(lock);
+ state = OPENED;
+ cv.broadcast();
+ }
+ void close() {
+ Mutex::Autolock _l(lock);
+ state = CLOSED;
+ }
+ void wait() const {
+ Mutex::Autolock _l(lock);
+ while (state == CLOSED) {
+ cv.wait(lock);
+ }
+ }
+private:
+ enum { OPENED, CLOSED };
+ mutable Mutex lock;
+ mutable Condition cv;
+ volatile int state;
+};
+
+}; // namespace android
+
+#endif // ANDROID_BARRIER_H