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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "GraphicsStatsService"
     18 
     19 #include <jni.h>
     20 #include <log/log.h>
     21 #include <nativehelper/JNIHelp.h>
     22 #include <nativehelper/ScopedPrimitiveArray.h>
     23 #include <nativehelper/ScopedUtfChars.h>
     24 #include <JankTracker.h>
     25 #include <service/GraphicsStatsService.h>
     26 
     27 namespace android {
     28 
     29 using namespace android::uirenderer;
     30 
     31 static jint getAshmemSize(JNIEnv*, jobject) {
     32     return sizeof(ProfileData);
     33 }
     34 
     35 static jlong createDump(JNIEnv*, jobject, jint fd, jboolean isProto) {
     36     GraphicsStatsService::Dump* dump = GraphicsStatsService::createDump(fd, isProto
     37             ? GraphicsStatsService::DumpType::Protobuf : GraphicsStatsService::DumpType::Text);
     38     return reinterpret_cast<jlong>(dump);
     39 }
     40 
     41 static void addToDump(JNIEnv* env, jobject, jlong dumpPtr, jstring jpath, jstring jpackage,
     42         jlong versionCode, jlong startTime, jlong endTime, jbyteArray jdata) {
     43     std::string path;
     44     const ProfileData* data = nullptr;
     45     LOG_ALWAYS_FATAL_IF(jdata == nullptr && jpath == nullptr, "Path and data can't both be null");
     46     ScopedByteArrayRO buffer{env};
     47     if (jdata != nullptr) {
     48         buffer.reset(jdata);
     49         LOG_ALWAYS_FATAL_IF(buffer.size() != sizeof(ProfileData),
     50                 "Buffer size %zu doesn't match expected %zu!", buffer.size(), sizeof(ProfileData));
     51         data = reinterpret_cast<const ProfileData*>(buffer.get());
     52     }
     53     if (jpath != nullptr) {
     54         ScopedUtfChars pathChars(env, jpath);
     55         LOG_ALWAYS_FATAL_IF(pathChars.size() <= 0 || !pathChars.c_str(), "Failed to get path chars");
     56         path.assign(pathChars.c_str(), pathChars.size());
     57     }
     58     ScopedUtfChars packageChars(env, jpackage);
     59     LOG_ALWAYS_FATAL_IF(packageChars.size() <= 0 || !packageChars.c_str(), "Failed to get path chars");
     60     GraphicsStatsService::Dump* dump = reinterpret_cast<GraphicsStatsService::Dump*>(dumpPtr);
     61     LOG_ALWAYS_FATAL_IF(!dump, "null passed for dump pointer");
     62 
     63     const std::string package(packageChars.c_str(), packageChars.size());
     64     GraphicsStatsService::addToDump(dump, path, package, versionCode, startTime, endTime, data);
     65 }
     66 
     67 static void addFileToDump(JNIEnv* env, jobject, jlong dumpPtr, jstring jpath) {
     68     ScopedUtfChars pathChars(env, jpath);
     69     LOG_ALWAYS_FATAL_IF(pathChars.size() <= 0 || !pathChars.c_str(), "Failed to get path chars");
     70     const std::string path(pathChars.c_str(), pathChars.size());
     71     GraphicsStatsService::Dump* dump = reinterpret_cast<GraphicsStatsService::Dump*>(dumpPtr);
     72     GraphicsStatsService::addToDump(dump, path);
     73 }
     74 
     75 static void finishDump(JNIEnv*, jobject, jlong dumpPtr) {
     76     GraphicsStatsService::Dump* dump = reinterpret_cast<GraphicsStatsService::Dump*>(dumpPtr);
     77     GraphicsStatsService::finishDump(dump);
     78 }
     79 
     80 static void saveBuffer(JNIEnv* env, jobject clazz, jstring jpath, jstring jpackage,
     81         jlong versionCode, jlong startTime, jlong endTime, jbyteArray jdata) {
     82     ScopedByteArrayRO buffer(env, jdata);
     83     LOG_ALWAYS_FATAL_IF(buffer.size() != sizeof(ProfileData),
     84             "Buffer size %zu doesn't match expected %zu!", buffer.size(), sizeof(ProfileData));
     85     ScopedUtfChars pathChars(env, jpath);
     86     LOG_ALWAYS_FATAL_IF(pathChars.size() <= 0 || !pathChars.c_str(), "Failed to get path chars");
     87     ScopedUtfChars packageChars(env, jpackage);
     88     LOG_ALWAYS_FATAL_IF(packageChars.size() <= 0 || !packageChars.c_str(), "Failed to get path chars");
     89 
     90     const std::string path(pathChars.c_str(), pathChars.size());
     91     const std::string package(packageChars.c_str(), packageChars.size());
     92     const ProfileData* data = reinterpret_cast<const ProfileData*>(buffer.get());
     93     GraphicsStatsService::saveBuffer(path, package, versionCode, startTime, endTime, data);
     94 }
     95 
     96 static const JNINativeMethod sMethods[] = {
     97     { "nGetAshmemSize", "()I", (void*) getAshmemSize },
     98     { "nCreateDump", "(IZ)J", (void*) createDump },
     99     { "nAddToDump", "(JLjava/lang/String;Ljava/lang/String;JJJ[B)V", (void*) addToDump },
    100     { "nAddToDump", "(JLjava/lang/String;)V", (void*) addFileToDump },
    101     { "nFinishDump", "(J)V", (void*) finishDump },
    102     { "nSaveBuffer", "(Ljava/lang/String;Ljava/lang/String;JJJ[B)V", (void*) saveBuffer },
    103 };
    104 
    105 int register_android_server_GraphicsStatsService(JNIEnv* env)
    106 {
    107     return jniRegisterNativeMethods(env, "com/android/server/GraphicsStatsService",
    108                                     sMethods, NELEM(sMethods));
    109 }
    110 
    111 } // namespace android