libs/hwui/service/GraphicsStatsService.cpp - platform/frameworks/base - Gitiles

 /*
  * Copyright (C) 2017 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.
  */

 #include "GraphicsStatsService.h"

 #include "JankTracker.h"
 #include "protos/graphicsstats.pb.h"

 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
 #include <log/log.h>

 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>

 namespace android {
 namespace uirenderer {

 using namespace google::protobuf;

 constexpr int32_t sCurrentFileVersion = 1;
 constexpr int32_t sHeaderSize = 4;
 static_assert(sizeof(sCurrentFileVersion) == sHeaderSize, "Header size is wrong");

 constexpr int sHistogramSize = ProfileData::HistogramSize();

 static bool mergeProfileDataIntoProto(protos::GraphicsStatsProto* proto,
                                       const std::string& package, int64_t versionCode,
                                       int64_t startTime, int64_t endTime, const ProfileData* data);
 static void dumpAsTextToFd(protos::GraphicsStatsProto* proto, int outFd);

 class FileDescriptor {
 public:
     FileDescriptor(int fd) : mFd(fd) {}
     ~FileDescriptor() {
         if (mFd != -1) {
             close(mFd);
             mFd = -1;
         }
     }
     bool valid() { return mFd != -1; }
     operator int() { return mFd; }

 private:
     int mFd;
 };

 class FileOutputStreamLite : public io::ZeroCopyOutputStream {
 public:
     FileOutputStreamLite(int fd) : mCopyAdapter(fd), mImpl(&mCopyAdapter) {}
     virtual ~FileOutputStreamLite() {}

     int GetErrno() { return mCopyAdapter.mErrno; }

     virtual bool Next(void** data, int* size) override { return mImpl.Next(data, size); }

     virtual void BackUp(int count) override { mImpl.BackUp(count); }

     virtual int64 ByteCount() const override { return mImpl.ByteCount(); }

     bool Flush() { return mImpl.Flush(); }

 private:
     struct FDAdapter : public io::CopyingOutputStream {
         int mFd;
         int mErrno = 0;

         FDAdapter(int fd) : mFd(fd) {}
         virtual ~FDAdapter() {}

         virtual bool Write(const void* buffer, int size) override {
             int ret;
             while (size) {
                 ret = TEMP_FAILURE_RETRY(write(mFd, buffer, size));
                 if (ret <= 0) {
                     mErrno = errno;
                     return false;
                 }
                 size -= ret;
             }
             return true;
         }
     };

     FileOutputStreamLite::FDAdapter mCopyAdapter;
     io::CopyingOutputStreamAdaptor mImpl;
 };

 bool GraphicsStatsService::parseFromFile(const std::string& path,
                                          protos::GraphicsStatsProto* output) {
     FileDescriptor fd{open(path.c_str(), O_RDONLY)};
     if (!fd.valid()) {
         int err = errno;
         // The file not existing is normal for addToDump(), so only log if
         // we get an unexpected error
         if (err != ENOENT) {
             ALOGW("Failed to open '%s', errno=%d (%s)", path.c_str(), err, strerror(err));
         }
         return false;
     }
     struct stat sb;
     if (fstat(fd, &sb) || sb.st_size < sHeaderSize) {
         int err = errno;
         // The file not existing is normal for addToDump(), so only log if
         // we get an unexpected error
         if (err != ENOENT) {
             ALOGW("Failed to fstat '%s', errno=%d (%s) (st_size %d)", path.c_str(), err,
                   strerror(err), (int)sb.st_size);
         }
         return false;
     }
     void* addr = mmap(nullptr, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
     if (addr == MAP_FAILED) {
         int err = errno;
         // The file not existing is normal for addToDump(), so only log if
         // we get an unexpected error
         if (err != ENOENT) {
             ALOGW("Failed to mmap '%s', errno=%d (%s)", path.c_str(), err, strerror(err));
         }
         return false;
     }
     uint32_t file_version = *reinterpret_cast<uint32_t*>(addr);
     if (file_version != sCurrentFileVersion) {
         ALOGW("file_version mismatch! expected %d got %d", sCurrentFileVersion, file_version);
         return false;
     }

     void* data = reinterpret_cast<uint8_t*>(addr) + sHeaderSize;
     int dataSize = sb.st_size - sHeaderSize;
     io::ArrayInputStream input{data, dataSize};
     bool success = output->ParseFromZeroCopyStream(&input);
     if (!success) {
         ALOGW("Parse failed on '%s' error='%s'", path.c_str(),
               output->InitializationErrorString().c_str());
     }
     return success;
 }

 bool mergeProfileDataIntoProto(protos::GraphicsStatsProto* proto, const std::string& package,
                                int64_t versionCode, int64_t startTime, int64_t endTime,
                                const ProfileData* data) {
     if (proto->stats_start() == 0 || proto->stats_start() > startTime) {
         proto->set_stats_start(startTime);
     }
     if (proto->stats_end() == 0 || proto->stats_end() < endTime) {
         proto->set_stats_end(endTime);
     }
     proto->set_package_name(package);
     proto->set_version_code(versionCode);
     auto summary = proto->mutable_summary();
     summary->set_total_frames(summary->total_frames() + data->totalFrameCount());
     summary->set_janky_frames(summary->janky_frames() + data->jankFrameCount());
     summary->set_missed_vsync_count(summary->missed_vsync_count() +
                                     data->jankTypeCount(kMissedVsync));
     summary->set_high_input_latency_count(summary->high_input_latency_count() +
                                           data->jankTypeCount(kHighInputLatency));
     summary->set_slow_ui_thread_count(summary->slow_ui_thread_count() +
                                       data->jankTypeCount(kSlowUI));
     summary->set_slow_bitmap_upload_count(summary->slow_bitmap_upload_count() +
                                           data->jankTypeCount(kSlowSync));
     summary->set_slow_draw_count(summary->slow_draw_count() + data->jankTypeCount(kSlowRT));
     summary->set_missed_deadline_count(summary->missed_deadline_count()
             + data->jankTypeCount(kMissedDeadline));

     bool creatingHistogram = false;
     if (proto->histogram_size() == 0) {
         proto->mutable_histogram()->Reserve(sHistogramSize);
         creatingHistogram = true;
     } else if (proto->histogram_size() != sHistogramSize) {
         ALOGE("Histogram size mismatch, proto is %d expected %d", proto->histogram_size(),
               sHistogramSize);
         return false;
     }
     int index = 0;
     bool hitMergeError = false;
     data->histogramForEach([&](ProfileData::HistogramEntry entry) {
         if (hitMergeError) return;

         protos::GraphicsStatsHistogramBucketProto* bucket;
         if (creatingHistogram) {
             bucket = proto->add_histogram();
             bucket->set_render_millis(entry.renderTimeMs);
         } else {
             bucket = proto->mutable_histogram(index);
             if (bucket->render_millis() != static_cast<int32_t>(entry.renderTimeMs)) {
                 ALOGW("Frame time mistmatch %d vs. %u", bucket->render_millis(),
                       entry.renderTimeMs);
                 hitMergeError = true;
                 return;
             }
         }
         bucket->set_frame_count(bucket->frame_count() + entry.frameCount);
         index++;
     });
     return !hitMergeError;
 }

 static int32_t findPercentile(protos::GraphicsStatsProto* proto, int percentile) {
     int32_t pos = percentile * proto->summary().total_frames() / 100;
     int32_t remaining = proto->summary().total_frames() - pos;
     for (auto it = proto->histogram().rbegin(); it != proto->histogram().rend(); ++it) {
         remaining -= it->frame_count();
         if (remaining <= 0) {
             return it->render_millis();
         }
     }
     return 0;
 }

 void dumpAsTextToFd(protos::GraphicsStatsProto* proto, int fd) {
     // This isn't a full validation, just enough that we can deref at will
     if (proto->package_name().empty() || !proto->has_summary()) {
         ALOGW("Skipping dump, invalid package_name() '%s' or summary %d",
               proto->package_name().c_str(), proto->has_summary());
         return;
     }
     dprintf(fd, "\nPackage: %s", proto->package_name().c_str());
     dprintf(fd, "\nVersion: %lld", proto->version_code());
     dprintf(fd, "\nStats since: %lldns", proto->stats_start());
     dprintf(fd, "\nStats end: %lldns", proto->stats_end());
     auto summary = proto->summary();
     dprintf(fd, "\nTotal frames rendered: %d", summary.total_frames());
     dprintf(fd, "\nJanky frames: %d (%.2f%%)", summary.janky_frames(),
             (float)summary.janky_frames() / (float)summary.total_frames() * 100.0f);
     dprintf(fd, "\n50th percentile: %dms", findPercentile(proto, 50));
     dprintf(fd, "\n90th percentile: %dms", findPercentile(proto, 90));
     dprintf(fd, "\n95th percentile: %dms", findPercentile(proto, 95));
     dprintf(fd, "\n99th percentile: %dms", findPercentile(proto, 99));
     dprintf(fd, "\nNumber Missed Vsync: %d", summary.missed_vsync_count());
     dprintf(fd, "\nNumber High input latency: %d", summary.high_input_latency_count());
     dprintf(fd, "\nNumber Slow UI thread: %d", summary.slow_ui_thread_count());
     dprintf(fd, "\nNumber Slow bitmap uploads: %d", summary.slow_bitmap_upload_count());
     dprintf(fd, "\nNumber Slow issue draw commands: %d", summary.slow_draw_count());
     dprintf(fd, "\nNumber Frame deadline missed: %d", summary.missed_deadline_count());
     dprintf(fd, "\nHISTOGRAM:");
     for (const auto& it : proto->histogram()) {
         dprintf(fd, " %dms=%d", it.render_millis(), it.frame_count());
     }
     dprintf(fd, "\n");
 }

 void GraphicsStatsService::saveBuffer(const std::string& path, const std::string& package,
                                       int64_t versionCode, int64_t startTime, int64_t endTime,
                                       const ProfileData* data) {
     protos::GraphicsStatsProto statsProto;
     if (!parseFromFile(path, &statsProto)) {
         statsProto.Clear();
     }
     if (!mergeProfileDataIntoProto(&statsProto, package, versionCode, startTime, endTime, data)) {
         return;
     }
     // Although we might not have read any data from the file, merging the existing data
     // should always fully-initialize the proto
     if (!statsProto.IsInitialized()) {
         ALOGE("proto initialization error %s", statsProto.InitializationErrorString().c_str());
         return;
     }
     if (statsProto.package_name().empty() || !statsProto.has_summary()) {
         ALOGE("missing package_name() '%s' summary %d", statsProto.package_name().c_str(),
               statsProto.has_summary());
         return;
     }
     int outFd = open(path.c_str(), O_CREAT | O_RDWR | O_TRUNC, 0660);
     if (outFd <= 0) {
         int err = errno;
         ALOGW("Failed to open '%s', error=%d (%s)", path.c_str(), err, strerror(err));
         return;
     }
     int wrote = write(outFd, &sCurrentFileVersion, sHeaderSize);
     if (wrote != sHeaderSize) {
         int err = errno;
         ALOGW("Failed to write header to '%s', returned=%d errno=%d (%s)", path.c_str(), wrote, err,
               strerror(err));
         close(outFd);
         return;
     }
     {
         FileOutputStreamLite output(outFd);
         bool success = statsProto.SerializeToZeroCopyStream(&output) && output.Flush();
         if (output.GetErrno() != 0) {
             ALOGW("Error writing to fd=%d, path='%s' err=%d (%s)", outFd, path.c_str(),
                   output.GetErrno(), strerror(output.GetErrno()));
             success = false;
         } else if (!success) {
             ALOGW("Serialize failed on '%s' unknown error", path.c_str());
         }
     }
     close(outFd);
 }

 class GraphicsStatsService::Dump {
 public:
     Dump(int outFd, DumpType type) : mFd(outFd), mType(type) {}
     int fd() { return mFd; }
     DumpType type() { return mType; }
     protos::GraphicsStatsServiceDumpProto& proto() { return mProto; }

 private:
     int mFd;
     DumpType mType;
     protos::GraphicsStatsServiceDumpProto mProto;
 };

 GraphicsStatsService::Dump* GraphicsStatsService::createDump(int outFd, DumpType type) {
     return new Dump(outFd, type);
 }

 void GraphicsStatsService::addToDump(Dump* dump, const std::string& path,
                                      const std::string& package, int64_t versionCode,
                                      int64_t startTime, int64_t endTime, const ProfileData* data) {
     protos::GraphicsStatsProto statsProto;
     if (!path.empty() && !parseFromFile(path, &statsProto)) {
         statsProto.Clear();
     }
     if (data &&
         !mergeProfileDataIntoProto(&statsProto, package, versionCode, startTime, endTime, data)) {
         return;
     }
     if (!statsProto.IsInitialized()) {
         ALOGW("Failed to load profile data from path '%s' and data %p",
               path.empty() ? "<empty>" : path.c_str(), data);
         return;
     }

     if (dump->type() == DumpType::Protobuf) {
         dump->proto().add_stats()->CopyFrom(statsProto);
     } else {
         dumpAsTextToFd(&statsProto, dump->fd());
     }
 }

 void GraphicsStatsService::addToDump(Dump* dump, const std::string& path) {
     protos::GraphicsStatsProto statsProto;
     if (!parseFromFile(path, &statsProto)) {
         return;
     }
     if (dump->type() == DumpType::Protobuf) {
         dump->proto().add_stats()->CopyFrom(statsProto);
     } else {
         dumpAsTextToFd(&statsProto, dump->fd());
     }
 }

 void GraphicsStatsService::finishDump(Dump* dump) {
     if (dump->type() == DumpType::Protobuf) {
         FileOutputStreamLite stream(dump->fd());
         dump->proto().SerializeToZeroCopyStream(&stream);
     }
     delete dump;
 }

 } /* namespace uirenderer */
 } /* namespace android */
	/*
	* Copyright (C) 2017 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.
	*/

	#include "GraphicsStatsService.h"

	#include "JankTracker.h"
	#include "protos/graphicsstats.pb.h"

	#include <google/protobuf/io/zero_copy_stream_impl_lite.h>
	#include <log/log.h>

	#include <errno.h>
	#include <fcntl.h>
	#include <inttypes.h>
	#include <sys/mman.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <unistd.h>

	namespace android {
	namespace uirenderer {

	using namespace google::protobuf;

	constexpr int32_t sCurrentFileVersion = 1;
	constexpr int32_t sHeaderSize = 4;
	static_assert(sizeof(sCurrentFileVersion) == sHeaderSize, "Header size is wrong");

	constexpr int sHistogramSize = ProfileData::HistogramSize();

	static bool mergeProfileDataIntoProto(protos::GraphicsStatsProto* proto,
	const std::string& package, int64_t versionCode,
	int64_t startTime, int64_t endTime, const ProfileData* data);
	static void dumpAsTextToFd(protos::GraphicsStatsProto* proto, int outFd);

	class FileDescriptor {
	public:
	FileDescriptor(int fd) : mFd(fd) {}
	~FileDescriptor() {
	if (mFd != -1) {
	close(mFd);
	mFd = -1;
	}
	}
	bool valid() { return mFd != -1; }
	operator int() { return mFd; }

	private:
	int mFd;
	};

	class FileOutputStreamLite : public io::ZeroCopyOutputStream {
	public:
	FileOutputStreamLite(int fd) : mCopyAdapter(fd), mImpl(&mCopyAdapter) {}
	virtual ~FileOutputStreamLite() {}

	int GetErrno() { return mCopyAdapter.mErrno; }

	virtual bool Next(void** data, int* size) override { return mImpl.Next(data, size); }

	virtual void BackUp(int count) override { mImpl.BackUp(count); }

	virtual int64 ByteCount() const override { return mImpl.ByteCount(); }

	bool Flush() { return mImpl.Flush(); }

	private:
	struct FDAdapter : public io::CopyingOutputStream {
	int mFd;
	int mErrno = 0;

	FDAdapter(int fd) : mFd(fd) {}
	virtual ~FDAdapter() {}

	virtual bool Write(const void* buffer, int size) override {
	int ret;
	while (size) {
	ret = TEMP_FAILURE_RETRY(write(mFd, buffer, size));
	if (ret <= 0) {
	mErrno = errno;
	return false;
	}
	size -= ret;
	}
	return true;
	}
	};

	FileOutputStreamLite::FDAdapter mCopyAdapter;
	io::CopyingOutputStreamAdaptor mImpl;
	};

	bool GraphicsStatsService::parseFromFile(const std::string& path,
	protos::GraphicsStatsProto* output) {
	FileDescriptor fd{open(path.c_str(), O_RDONLY)};
	if (!fd.valid()) {
	int err = errno;
	// The file not existing is normal for addToDump(), so only log if
	// we get an unexpected error
	if (err != ENOENT) {
	ALOGW("Failed to open '%s', errno=%d (%s)", path.c_str(), err, strerror(err));
	}
	return false;
	}
	struct stat sb;
	if (fstat(fd, &sb) \|\| sb.st_size < sHeaderSize) {
	int err = errno;
	// The file not existing is normal for addToDump(), so only log if
	// we get an unexpected error
	if (err != ENOENT) {
	ALOGW("Failed to fstat '%s', errno=%d (%s) (st_size %d)", path.c_str(), err,
	strerror(err), (int)sb.st_size);
	}
	return false;
	}
	void* addr = mmap(nullptr, sb.st_size, PROT_READ, MAP_SHARED, fd, 0);
	if (addr == MAP_FAILED) {
	int err = errno;
	// The file not existing is normal for addToDump(), so only log if
	// we get an unexpected error
	if (err != ENOENT) {
	ALOGW("Failed to mmap '%s', errno=%d (%s)", path.c_str(), err, strerror(err));
	}
	return false;
	}
	uint32_t file_version = reinterpret_cast<uint32_t>(addr);
	if (file_version != sCurrentFileVersion) {
	ALOGW("file_version mismatch! expected %d got %d", sCurrentFileVersion, file_version);
	return false;
	}

	void* data = reinterpret_cast<uint8_t*>(addr) + sHeaderSize;
	int dataSize = sb.st_size - sHeaderSize;
	io::ArrayInputStream input{data, dataSize};
	bool success = output->ParseFromZeroCopyStream(&input);
	if (!success) {
	ALOGW("Parse failed on '%s' error='%s'", path.c_str(),
	output->InitializationErrorString().c_str());
	}
	return success;
	}

	bool mergeProfileDataIntoProto(protos::GraphicsStatsProto* proto, const std::string& package,
	int64_t versionCode, int64_t startTime, int64_t endTime,
	const ProfileData* data) {
	if (proto->stats_start() == 0 \|\| proto->stats_start() > startTime) {
	proto->set_stats_start(startTime);
	}
	if (proto->stats_end() == 0 \|\| proto->stats_end() < endTime) {
	proto->set_stats_end(endTime);
	}
	proto->set_package_name(package);
	proto->set_version_code(versionCode);
	auto summary = proto->mutable_summary();
	summary->set_total_frames(summary->total_frames() + data->totalFrameCount());
	summary->set_janky_frames(summary->janky_frames() + data->jankFrameCount());
	summary->set_missed_vsync_count(summary->missed_vsync_count() +
	data->jankTypeCount(kMissedVsync));
	summary->set_high_input_latency_count(summary->high_input_latency_count() +
	data->jankTypeCount(kHighInputLatency));
	summary->set_slow_ui_thread_count(summary->slow_ui_thread_count() +
	data->jankTypeCount(kSlowUI));
	summary->set_slow_bitmap_upload_count(summary->slow_bitmap_upload_count() +
	data->jankTypeCount(kSlowSync));
	summary->set_slow_draw_count(summary->slow_draw_count() + data->jankTypeCount(kSlowRT));
	summary->set_missed_deadline_count(summary->missed_deadline_count()
	+ data->jankTypeCount(kMissedDeadline));

	bool creatingHistogram = false;
	if (proto->histogram_size() == 0) {
	proto->mutable_histogram()->Reserve(sHistogramSize);
	creatingHistogram = true;
	} else if (proto->histogram_size() != sHistogramSize) {
	ALOGE("Histogram size mismatch, proto is %d expected %d", proto->histogram_size(),
	sHistogramSize);
	return false;
	}
	int index = 0;
	bool hitMergeError = false;
	data->histogramForEach([&](ProfileData::HistogramEntry entry) {
	if (hitMergeError) return;

	protos::GraphicsStatsHistogramBucketProto* bucket;
	if (creatingHistogram) {
	bucket = proto->add_histogram();
	bucket->set_render_millis(entry.renderTimeMs);
	} else {
	bucket = proto->mutable_histogram(index);
	if (bucket->render_millis() != static_cast<int32_t>(entry.renderTimeMs)) {
	ALOGW("Frame time mistmatch %d vs. %u", bucket->render_millis(),
	entry.renderTimeMs);
	hitMergeError = true;
	return;
	}
	}
	bucket->set_frame_count(bucket->frame_count() + entry.frameCount);
	index++;
	});
	return !hitMergeError;
	}

	static int32_t findPercentile(protos::GraphicsStatsProto* proto, int percentile) {
	int32_t pos = percentile * proto->summary().total_frames() / 100;
	int32_t remaining = proto->summary().total_frames() - pos;
	for (auto it = proto->histogram().rbegin(); it != proto->histogram().rend(); ++it) {
	remaining -= it->frame_count();
	if (remaining <= 0) {
	return it->render_millis();
	}
	}
	return 0;
	}

	void dumpAsTextToFd(protos::GraphicsStatsProto* proto, int fd) {
	// This isn't a full validation, just enough that we can deref at will
	if (proto->package_name().empty() \|\| !proto->has_summary()) {
	ALOGW("Skipping dump, invalid package_name() '%s' or summary %d",
	proto->package_name().c_str(), proto->has_summary());
	return;
	}
	dprintf(fd, "\nPackage: %s", proto->package_name().c_str());
	dprintf(fd, "\nVersion: %lld", proto->version_code());
	dprintf(fd, "\nStats since: %lldns", proto->stats_start());
	dprintf(fd, "\nStats end: %lldns", proto->stats_end());
	auto summary = proto->summary();
	dprintf(fd, "\nTotal frames rendered: %d", summary.total_frames());
	dprintf(fd, "\nJanky frames: %d (%.2f%%)", summary.janky_frames(),
	(float)summary.janky_frames() / (float)summary.total_frames() * 100.0f);
	dprintf(fd, "\n50th percentile: %dms", findPercentile(proto, 50));
	dprintf(fd, "\n90th percentile: %dms", findPercentile(proto, 90));
	dprintf(fd, "\n95th percentile: %dms", findPercentile(proto, 95));
	dprintf(fd, "\n99th percentile: %dms", findPercentile(proto, 99));
	dprintf(fd, "\nNumber Missed Vsync: %d", summary.missed_vsync_count());
	dprintf(fd, "\nNumber High input latency: %d", summary.high_input_latency_count());
	dprintf(fd, "\nNumber Slow UI thread: %d", summary.slow_ui_thread_count());
	dprintf(fd, "\nNumber Slow bitmap uploads: %d", summary.slow_bitmap_upload_count());
	dprintf(fd, "\nNumber Slow issue draw commands: %d", summary.slow_draw_count());
	dprintf(fd, "\nNumber Frame deadline missed: %d", summary.missed_deadline_count());
	dprintf(fd, "\nHISTOGRAM:");
	for (const auto& it : proto->histogram()) {
	dprintf(fd, " %dms=%d", it.render_millis(), it.frame_count());
	}
	dprintf(fd, "\n");
	}

	void GraphicsStatsService::saveBuffer(const std::string& path, const std::string& package,
	int64_t versionCode, int64_t startTime, int64_t endTime,
	const ProfileData* data) {
	protos::GraphicsStatsProto statsProto;
	if (!parseFromFile(path, &statsProto)) {
	statsProto.Clear();
	}
	if (!mergeProfileDataIntoProto(&statsProto, package, versionCode, startTime, endTime, data)) {
	return;
	}
	// Although we might not have read any data from the file, merging the existing data
	// should always fully-initialize the proto
	if (!statsProto.IsInitialized()) {
	ALOGE("proto initialization error %s", statsProto.InitializationErrorString().c_str());
	return;
	}
	if (statsProto.package_name().empty() \|\| !statsProto.has_summary()) {
	ALOGE("missing package_name() '%s' summary %d", statsProto.package_name().c_str(),
	statsProto.has_summary());
	return;
	}
	int outFd = open(path.c_str(), O_CREAT \| O_RDWR \| O_TRUNC, 0660);
	if (outFd <= 0) {
	int err = errno;
	ALOGW("Failed to open '%s', error=%d (%s)", path.c_str(), err, strerror(err));
	return;
	}
	int wrote = write(outFd, &sCurrentFileVersion, sHeaderSize);
	if (wrote != sHeaderSize) {
	int err = errno;
	ALOGW("Failed to write header to '%s', returned=%d errno=%d (%s)", path.c_str(), wrote, err,
	strerror(err));
	close(outFd);
	return;
	}
	{
	FileOutputStreamLite output(outFd);
	bool success = statsProto.SerializeToZeroCopyStream(&output) && output.Flush();
	if (output.GetErrno() != 0) {
	ALOGW("Error writing to fd=%d, path='%s' err=%d (%s)", outFd, path.c_str(),
	output.GetErrno(), strerror(output.GetErrno()));
	success = false;
	} else if (!success) {
	ALOGW("Serialize failed on '%s' unknown error", path.c_str());
	}
	}
	close(outFd);
	}

	class GraphicsStatsService::Dump {
	public:
	Dump(int outFd, DumpType type) : mFd(outFd), mType(type) {}
	int fd() { return mFd; }
	DumpType type() { return mType; }
	protos::GraphicsStatsServiceDumpProto& proto() { return mProto; }

	private:
	int mFd;
	DumpType mType;
	protos::GraphicsStatsServiceDumpProto mProto;
	};

	GraphicsStatsService::Dump* GraphicsStatsService::createDump(int outFd, DumpType type) {
	return new Dump(outFd, type);
	}

	void GraphicsStatsService::addToDump(Dump* dump, const std::string& path,
	const std::string& package, int64_t versionCode,
	int64_t startTime, int64_t endTime, const ProfileData* data) {
	protos::GraphicsStatsProto statsProto;
	if (!path.empty() && !parseFromFile(path, &statsProto)) {
	statsProto.Clear();
	}
	if (data &&
	!mergeProfileDataIntoProto(&statsProto, package, versionCode, startTime, endTime, data)) {
	return;
	}
	if (!statsProto.IsInitialized()) {
	ALOGW("Failed to load profile data from path '%s' and data %p",
	path.empty() ? "<empty>" : path.c_str(), data);
	return;
	}

	if (dump->type() == DumpType::Protobuf) {
	dump->proto().add_stats()->CopyFrom(statsProto);
	} else {
	dumpAsTextToFd(&statsProto, dump->fd());
	}
	}

	void GraphicsStatsService::addToDump(Dump* dump, const std::string& path) {
	protos::GraphicsStatsProto statsProto;
	if (!parseFromFile(path, &statsProto)) {
	return;
	}
	if (dump->type() == DumpType::Protobuf) {
	dump->proto().add_stats()->CopyFrom(statsProto);
	} else {
	dumpAsTextToFd(&statsProto, dump->fd());
	}
	}

	void GraphicsStatsService::finishDump(Dump* dump) {
	if (dump->type() == DumpType::Protobuf) {
	FileOutputStreamLite stream(dump->fd());
	dump->proto().SerializeToZeroCopyStream(&stream);
	}
	delete dump;
	}

	} /* namespace uirenderer */
	} /* namespace android */