Directory re-organization

Change-Id: I8e3f12a22e765d36ddefd87edf204735b25474f6

1 files changed, 57 insertions, 0 deletions

diff --git a/src/ThreadPool.h b/src/ThreadPool.h
new file mode 100644
index 0000000..2641ed0
--- /dev/null
+++ b/src/ThreadPool.h
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+/*
+ * Copyright (C) 2010 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.
+ */
+
+/** \file ThreadPool.h ThreadPool interface */
+
+/** \brief Closure represents a deferred computation */
+
+typedef struct {
+    void (*mHandler)(void *, int);
+    void *mContext;
+    int mParameter;
+} Closure;
+
+/** \brief ThreadPool manages a pool of worker threads that execute Closures */
+
+typedef struct {
+    unsigned mInitialized; ///< Indicates which of the following 3 fields are initialized
+    pthread_mutex_t mMutex;
+    pthread_cond_t mCondNotFull;    ///< Signalled when a client thread could be unblocked
+    pthread_cond_t mCondNotEmpty;   ///< Signalled when a worker thread could be unblocked
+    SLboolean mShutdown;   ///< Whether shutdown of thread pool has been requested
+    unsigned mWaitingNotFull;   ///< Number of client threads waiting to enqueue
+    unsigned mWaitingNotEmpty;  ///< Number of worker threads waiting to dequeue
+    unsigned mMaxClosures;  ///< Number of slots in circular buffer for closures, not counting spare
+    unsigned mMaxThreads;   ///< Number of worker threads
+    Closure **mClosureArray;    ///< The circular buffer of closures
+    Closure **mClosureFront, **mClosureRear;
+    /// Saves a malloc in the typical case
+#define CLOSURE_TYPICAL 15
+    Closure *mClosureTypical[CLOSURE_TYPICAL+1];
+    pthread_t *mThreadArray;    ///< The worker threads
+#ifdef ANDROID
+#define THREAD_TYPICAL 0
+#else
+#define THREAD_TYPICAL 4
+#endif
+    pthread_t mThreadTypical[THREAD_TYPICAL];
+} ThreadPool;
+
+extern SLresult ThreadPool_init(ThreadPool *tp, unsigned maxClosures, unsigned maxThreads);
+extern void ThreadPool_deinit(ThreadPool *tp);
+extern SLresult ThreadPool_add(ThreadPool *tp, void (*handler)(void *, int), void *context,
+    int parameter);
+extern Closure *ThreadPool_remove(ThreadPool *tp);