mv libcpustats from frameworks/base to /native

OK to lose history

Change-Id: I05ce0452f16a396cff6e18db5424492f3a6f6861

3 files changed, 0 insertions, 220 deletions

diff --git a/include/cpustats/CentralTendencyStatistics.h b/include/cpustats/CentralTendencyStatistics.h
deleted file mode 100644
index 21b6981..0000000
--- a/include/cpustats/CentralTendencyStatistics.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2011 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 _CENTRAL_TENDENCY_STATISTICS_H
-#define _CENTRAL_TENDENCY_STATISTICS_H
-
-#include <math.h>
-
-// Not multithread safe
-class CentralTendencyStatistics {
-
-public:
-
-    CentralTendencyStatistics() :
-            mMean(NAN), mMedian(NAN), mMinimum(INFINITY), mMaximum(-INFINITY), mN(0), mM2(0),
-            mVariance(NAN), mVarianceKnownForN(0), mStddev(NAN), mStddevKnownForN(0) { }
-
-    ~CentralTendencyStatistics() { }
-
-    // add x to the set of samples
-    void sample(double x);
-
-    // return the arithmetic mean of all samples so far
-    double mean() const { return mMean; }
-
-    // return the minimum of all samples so far
-    double minimum() const { return mMinimum; }
-
-    // return the maximum of all samples so far
-    double maximum() const { return mMaximum; }
-
-    // return the variance of all samples so far
-    double variance() const;
-
-    // return the standard deviation of all samples so far
-    double stddev() const;
-
-    // return the number of samples added so far
-    unsigned n() const { return mN; }
-
-    // reset the set of samples to be empty
-    void reset();
-
-private:
-    double mMean;
-    double mMedian;
-    double mMinimum;
-    double mMaximum;
-    unsigned mN;    // number of samples so far
-    double mM2;
-
-    // cached variance, and n at time of caching
-    mutable double mVariance;
-    mutable unsigned mVarianceKnownForN;
-
-    // cached standard deviation, and n at time of caching
-    mutable double mStddev;
-    mutable unsigned mStddevKnownForN;
-
-};
-
-#endif // _CENTRAL_TENDENCY_STATISTICS_H
diff --git a/include/cpustats/README.txt b/include/cpustats/README.txt
deleted file mode 100644
index 14439f0..0000000
--- a/include/cpustats/README.txt
+++ /dev/null
@@ -1,6 +0,0 @@
-This is a static library of CPU usage statistics, originally written
-for audio but most are not actually specific to audio.
-
-Requirements to be here:
- * should be related to CPU usage statistics
- * should be portable to host; avoid Android OS dependencies without a conditional
diff --git a/include/cpustats/ThreadCpuUsage.h b/include/cpustats/ThreadCpuUsage.h
deleted file mode 100644
index 9cd93d8..0000000
--- a/include/cpustats/ThreadCpuUsage.h
+++ /dev/null
@@ -1,139 +0,0 @@
-/*
- * Copyright (C) 2011 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 _THREAD_CPU_USAGE_H
-#define _THREAD_CPU_USAGE_H
-
-#include <fcntl.h>
-#include <pthread.h>
-
-namespace android {
-
-// Track CPU usage for the current thread.
-// Units are in per-thread CPU ns, as reported by
-// clock_gettime(CLOCK_THREAD_CPUTIME_ID).  Simple usage: for cyclic
-// threads where you want to measure the execution time of the whole
-// cycle, just call sampleAndEnable() at the start of each cycle.
-// For acyclic threads, or for cyclic threads where you want to measure/track
-// only part of each cycle, call enable(), disable(), and/or setEnabled()
-// to demarcate the region(s) of interest, and then call sample() periodically.
-// This class is not thread-safe for concurrent calls from multiple threads;
-// the methods of this class may only be called by the current thread
-// which constructed the object.
-
-class ThreadCpuUsage
-{
-
-public:
-    ThreadCpuUsage() :
-        mIsEnabled(false),
-        mWasEverEnabled(false),
-        mAccumulator(0),
-        // mPreviousTs
-        // mMonotonicTs
-        mMonotonicKnown(false)
-        {
-            (void) pthread_once(&sOnceControl, &init);
-            for (int i = 0; i < sKernelMax; ++i) {
-                mCurrentkHz[i] = (uint32_t) ~0;   // unknown
-            }
-        }
-
-    ~ThreadCpuUsage() { }
-
-    // Return whether currently tracking CPU usage by current thread
-    bool isEnabled() const  { return mIsEnabled; }
-
-    // Enable tracking of CPU usage by current thread;
-    // any CPU used from this point forward will be tracked.
-    // Returns the previous enabled status.
-    bool enable()       { return setEnabled(true); }
-
-    // Disable tracking of CPU usage by current thread;
-    // any CPU used from this point forward will be ignored.
-    // Returns the previous enabled status.
-    bool disable()      { return setEnabled(false); }
-
-    // Set the enabled status and return the previous enabled status.
-    // This method is intended to be used for safe nested enable/disabling.
-    bool setEnabled(bool isEnabled);
-
-    // Add a sample point, and also enable tracking if needed.
-    // If tracking has never been enabled, then this call enables tracking but
-    // does _not_ add a sample -- it is not possible to add a sample the
-    // first time because there is no previous point to subtract from.
-    // Otherwise, if tracking is enabled,
-    // then adds a sample for tracked CPU ns since the previous
-    // sample, or since the first call to sampleAndEnable(), enable(), or
-    // setEnabled(true).  If there was a previous sample but tracking is
-    // now disabled, then adds a sample for the tracked CPU ns accumulated
-    // up until the most recent disable(), resets this accumulator, and then
-    // enables tracking.  Calling this method rather than enable() followed
-    // by sample() avoids a race condition for the first sample.
-    // Returns true if the sample 'ns' is valid, or false if invalid.
-    // Note that 'ns' is an output parameter passed by reference.
-    // The caller does not need to initialize this variable.
-    // The units are CPU nanoseconds consumed by current thread.
-    bool sampleAndEnable(double& ns);
-
-    // Add a sample point, but do not
-    // change the tracking enabled status.  If tracking has either never been
-    // enabled, or has never been enabled since the last sample, then log a warning
-    // and don't add sample.  Otherwise, adds a sample for tracked CPU ns since
-    // the previous sample or since the first call to sampleAndEnable(),
-    // enable(), or setEnabled(true) if no previous sample.
-    // Returns true if the sample is valid, or false if invalid.
-    // Note that 'ns' is an output parameter passed by reference.
-    // The caller does not need to initialize this variable.
-    // The units are CPU nanoseconds consumed by current thread.
-    bool sample(double& ns);
-
-    // Return the elapsed delta wall clock ns since initial enable or reset,
-    // as reported by clock_gettime(CLOCK_MONOTONIC).
-    long long elapsed() const;
-
-    // Reset elapsed wall clock.  Has no effect on tracking or accumulator.
-    void resetElapsed();
-
-    // Return current clock frequency for specified CPU, in kHz.
-    // You can get your CPU number using sched_getcpu(2).  Note that, unless CPU affinity
-    // has been configured appropriately, the CPU number can change.
-    // Also note that, unless the CPU governor has been configured appropriately,
-    // the CPU frequency can change.  And even if the CPU frequency is locked down
-    // to a particular value, that the frequency might still be adjusted
-    // to prevent thermal overload.  Therefore you should poll for your thread's
-    // current CPU number and clock frequency periodically.
-    uint32_t getCpukHz(int cpuNum);
-
-private:
-    bool mIsEnabled;                // whether tracking is currently enabled
-    bool mWasEverEnabled;           // whether tracking was ever enabled
-    long long mAccumulator;         // accumulated thread CPU time since last sample, in ns
-    struct timespec mPreviousTs;    // most recent thread CPU time, valid only if mIsEnabled is true
-    struct timespec mMonotonicTs;   // most recent monotonic time
-    bool mMonotonicKnown;           // whether mMonotonicTs has been set
-
-    static const int MAX_CPU = 8;
-    static int sScalingFds[MAX_CPU];// file descriptor per CPU for reading scaling_cur_freq
-    uint32_t mCurrentkHz[MAX_CPU];  // current CPU frequency in kHz, not static to avoid a race
-    static pthread_once_t sOnceControl;
-    static int sKernelMax;          // like MAX_CPU, but determined at runtime == cpu/kernel_max + 1
-    static void init();
-};
-
-}   // namespace android
-
-#endif //  _THREAD_CPU_USAGE_H