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53 lines
1.5 KiB
53 lines
1.5 KiB
// Copyright 2018 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "base/CpuTime.h"
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namespace android {
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namespace base {
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CpuTime operator-(const CpuTime& a, const CpuTime& other) {
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CpuTime res = a;
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res -= other;
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return res;
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}
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CpuTime& CpuTime::operator-=(const CpuTime& other) {
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wall_time_us -= other.wall_time_us;
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user_time_us -= other.user_time_us;
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system_time_us -= other.system_time_us;
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return *this;
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}
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uint64_t CpuTime::usageUs() const {
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return user_time_us + system_time_us;
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}
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float CpuTime::usage() const {
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if (!wall_time_us) return 0.0f;
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return (float)(user_time_us + system_time_us) / (float)(wall_time_us);
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}
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float CpuTime::usageUser() const {
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if (!wall_time_us) return 0.0f;
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return (float)(user_time_us) / (float)(wall_time_us);
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}
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float CpuTime::usageSystem() const {
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if (!wall_time_us) return 0.0f;
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return (float)(system_time_us) / (float)(wall_time_us);
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}
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} // namespace android
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} // namespace base
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