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, 164 insertions, 0 deletions

diff --git a/libs/common_time/utils.cpp b/libs/common_time/utils.cpp
new file mode 100644
index 0000000..ed2c77d
--- /dev/null
+++ b/libs/common_time/utils.cpp
@@ -0,0 +1,164 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "common_time"
+#include <utils/Log.h>
+
+#include "utils.h"
+
+namespace android {
+
+void Timeout::setTimeout(int msec) {
+    if (msec < 0) {
+        mSystemEndTime = 0;
+        return;
+    }
+
+    mSystemEndTime = systemTime() + (static_cast<nsecs_t>(msec) * 1000000);
+}
+
+int Timeout::msecTillTimeout(nsecs_t nowTime) {
+    if (!mSystemEndTime) {
+        return -1;
+    }
+
+    if (mSystemEndTime < nowTime) {
+        return 0;
+    }
+
+    nsecs_t delta = mSystemEndTime - nowTime;
+    delta += 999999;
+    delta /= 1000000;
+    if (delta > 0x7FFFFFFF) {
+        return 0x7FFFFFFF;
+    }
+
+    return static_cast<int>(delta);
+}
+
+LogRing::LogRing(const char* header, size_t entries)
+    : mSize(entries)
+    , mWr(0)
+    , mIsFull(false)
+    , mHeader(header) {
+    mRingBuffer = new Entry[mSize];
+    if (NULL == mRingBuffer)
+        ALOGE("Failed to allocate log ring with %u entries.", mSize);
+}
+
+LogRing::~LogRing() {
+    if (NULL != mRingBuffer)
+        delete[] mRingBuffer;
+}
+
+void LogRing::log(int prio, const char* tag, const char* fmt, ...) {
+    va_list argp;
+    va_start(argp, fmt);
+    internalLog(prio, tag, fmt, argp);
+    va_end(argp);
+}
+
+void LogRing::log(const char* fmt, ...) {
+    va_list argp;
+    va_start(argp, fmt);
+    internalLog(0, NULL, fmt, argp);
+    va_end(argp);
+}
+
+void LogRing::internalLog(int prio,
+                          const char* tag,
+                          const char* fmt,
+                          va_list argp) {
+    if (NULL != mRingBuffer) {
+        Mutex::Autolock lock(&mLock);
+        String8 s(String8::formatV(fmt, argp));
+        Entry* last = NULL;
+
+        if (mIsFull || mWr)
+            last = &(mRingBuffer[(mWr + mSize - 1) % mSize]);
+
+
+        if ((NULL != last) && !last->s.compare(s)) {
+            gettimeofday(&(last->last_ts), NULL);
+            ++last->count;
+        } else {
+            gettimeofday(&mRingBuffer[mWr].first_ts, NULL);
+            mRingBuffer[mWr].last_ts = mRingBuffer[mWr].first_ts;
+            mRingBuffer[mWr].count = 1;
+            mRingBuffer[mWr].s.setTo(s);
+
+            mWr = (mWr + 1) % mSize;
+            if (!mWr)
+                mIsFull = true;
+        }
+    }
+
+    if (NULL != tag)
+        LOG_PRI_VA(prio, tag, fmt, argp);
+}
+
+void LogRing::dumpLog(int fd) {
+    if (NULL == mRingBuffer)
+        return;
+
+    Mutex::Autolock lock(&mLock);
+
+    if (!mWr && !mIsFull)
+        return;
+
+    char buf[1024];
+    int res;
+    size_t start = mIsFull ? mWr : 0;
+    size_t count = mIsFull ? mSize : mWr;
+    static const char* kTimeFmt = "%a %b %d %Y %H:%M:%S";
+
+    res = snprintf(buf, sizeof(buf), "\n%s\n", mHeader);
+    if (res > 0)
+        write(fd, buf, res);
+
+    for (size_t i = 0; i < count; ++i) {
+        struct tm t;
+        char timebuf[64];
+        char repbuf[96];
+        size_t ndx = (start + i) % mSize;
+
+        if (1 != mRingBuffer[ndx].count) {
+            localtime_r(&mRingBuffer[ndx].last_ts.tv_sec, &t);
+            strftime(timebuf, sizeof(timebuf), kTimeFmt, &t);
+            snprintf(repbuf, sizeof(repbuf),
+                    " (repeated %d times, last was %s.%03ld)",
+                     mRingBuffer[ndx].count,
+                     timebuf,
+                     mRingBuffer[ndx].last_ts.tv_usec / 1000);
+            repbuf[sizeof(repbuf) - 1] = 0;
+        } else {
+            repbuf[0] = 0;
+        }
+
+        localtime_r(&mRingBuffer[ndx].first_ts.tv_sec, &t);
+        strftime(timebuf, sizeof(timebuf), kTimeFmt, &t);
+        res = snprintf(buf, sizeof(buf), "[%2d] %s.%03ld :: %s%s\n", 
+                       i, timebuf,
+                       mRingBuffer[ndx].first_ts.tv_usec / 1000,
+                       mRingBuffer[ndx].s.string(),
+                       repbuf);
+
+        if (res > 0)
+            write(fd, buf, res);
+    }
+}
+
+}  // namespace android