base/android/java_runtime.cc

   1 // Copyright 2015 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/android/java_runtime.h"
   6
   7 #include "base/android_runtime_jni_headers/Runtime_jni.h"
   8 #include "base/numerics/safe_conversions.h"
   9
  10 namespace base {
  11 namespace android {
  12
  13 void JavaRuntime::GetMemoryUsage(uint64_t* total_memory,
  14                                  uint64_t* free_memory) {
  15   JNIEnv* env = base::android::AttachCurrentThread();
  16   base::android::ScopedJavaLocalRef<jobject> runtime =
  17       JNI_Runtime::Java_Runtime_getRuntime(env);
  18   *total_memory = checked_cast<uint64_t>(
  19       JNI_Runtime::Java_Runtime_totalMemory(env, runtime));
  20   *free_memory = checked_cast<uint64_t>(
  21       JNI_Runtime::Java_Runtime_freeMemory(env, runtime));
  22 }
  23
  24 }  // namespace android
  25 }  // namespace base