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46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
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// Copyright 2014 The Crashpad Authors. All rights reserved.
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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 "util/misc/clock.h"
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#include <mach/mach_time.h>
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#include "base/mac/mach_logging.h"
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namespace {
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mach_timebase_info_data_t* TimebaseInternal() {
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mach_timebase_info_data_t* timebase_info = new mach_timebase_info_data_t;
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kern_return_t kr = mach_timebase_info(timebase_info);
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MACH_CHECK(kr == KERN_SUCCESS, kr) << "mach_timebase_info";
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return timebase_info;
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}
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mach_timebase_info_data_t* Timebase() {
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static mach_timebase_info_data_t* timebase_info = TimebaseInternal();
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return timebase_info;
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}
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} // namespace
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namespace crashpad {
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uint64_t ClockMonotonicNanoseconds() {
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uint64_t absolute_time = mach_absolute_time();
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mach_timebase_info_data_t* timebase_info = Timebase();
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return absolute_time * timebase_info->numer / timebase_info->denom;
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}
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} // namespace crashpad
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