Move some system services to separate directories

Refactored the directory structure so that services can be optionally
excluded. This is step 1. Will be followed by another change that makes
it possible to remove services from the build.

Change-Id: Ideacedfd34b5e213217ad3ff4ebb21c4a8e73f85

1 files changed, 83 insertions, 0 deletions

diff --git a/libs/common_time/utils.h b/libs/common_time/utils.h
new file mode 100644
index 0000000..c28cf0a
--- /dev/null
+++ b/libs/common_time/utils.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2012 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 __UTILS_H__
+#define __UTILS_H__
+
+#include <stdint.h>
+#include <unistd.h>
+
+#include <utils/String8.h>
+#include <utils/threads.h>
+#include <utils/Timers.h>
+
+namespace android {
+
+class Timeout {
+  public:
+    Timeout() : mSystemEndTime(0) { }
+
+    // Set a timeout which should occur msec milliseconds from now.
+    // Negative values will cancel any current timeout;
+    void setTimeout(int msec);
+
+    // Return the number of milliseconds until the timeout occurs, or -1 if
+    // no timeout is scheduled.
+    int msecTillTimeout(nsecs_t nowTime);
+    int msecTillTimeout() { return msecTillTimeout(systemTime()); }
+
+  private:
+    // The systemTime() at which the timeout will be complete, or 0 if no
+    // timeout is currently scheduled.
+    nsecs_t mSystemEndTime;
+};
+
+class LogRing {
+  public:
+    LogRing(const char* header, size_t entries);
+    ~LogRing();
+
+    // Send a log message to logcat as well as storing it in the ring buffer.
+    void log(int prio, const char* tag, const char* fmt, ...);
+
+    // Add a log message the ring buffer, do not send the message to logcat.
+    void log(const char* fmt, ...);
+
+    // Dump the log to an fd (dumpsys style)
+    void dumpLog(int fd);
+
+  private:
+    class Entry {
+      public:
+        uint32_t count;
+        struct timeval first_ts;
+        struct timeval last_ts;
+        String8 s;
+    };
+
+    Mutex  mLock;
+    Entry* mRingBuffer;
+    size_t mSize;
+    size_t mWr;
+    bool   mIsFull;
+    const char* mHeader;
+
+    void internalLog(int prio, const char* tag, const char* fmt, va_list va);
+};
+
+}  // namespace android
+
+#endif  // __UTILS_H__