mirror of
https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed
synced 2024-09-20 05:41:06 +00:00
830d5d1ac0
Changes the SystemClock C Api to: 1) Use a pw_chrono_SystemClock_Duration struct instead of aliasing an int64_t under pw_chrono_SystemClock_TickCount which could accidentally permit direct tick usage. 2) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H} and PW_SYSTEM_CLOCK_{MS,S,MIN,H}_CEIL to permit C API users to create durations which round up to the nearest tick for deadlines and timeouts, mirroring std::chrono::ceil. 3) Add PW_SYSTEM_CLOCK_{MS,S,MIN,H}_FLOOR to permit C API users to create durations which round down to the nearest tick for oddball corner cases, mirroring std::chrono::floor. 4) In order to enable said macros, the system_clock_config.h backend config was changed to require the clock period as a preprocessor defines instead of a std::ratio<>. 5) Renames pw_chrono_SystemClock_TimeDelta to pw_chrono_SystemClock_TimeElapsed to make the argument ordering make more sense. 6) Changes existing std::chrono::duration_cast usage to std::chrono::ceil and std::chrono:floor to set a good example to be explicit on rounding. 7) Renames pw_chrono_SystemClock_TickCountsToNsTruncate accordingly to pw_chrono_SystemClock_DurationToNsFloor. Requires: pigweed-internal:9340 Change-Id: Ia628dceac53f964eda7c4aacd3d790b8b0e92207 Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/31280 Commit-Queue: Ewout van Bekkum <ewout@google.com> Reviewed-by: Wyatt Hepler <hepler@google.com>
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
// Copyright 2020 The Pigweed Authors
|
|
//
|
|
// 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
|
|
//
|
|
// https://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 <chrono>
|
|
|
|
#include "pw_trace_tokenized/trace_tokenized.h"
|
|
|
|
using namespace std::chrono;
|
|
|
|
namespace {
|
|
|
|
auto start = steady_clock::now();
|
|
|
|
} // namespace
|
|
|
|
// Define trace time as a counter for tests.
|
|
PW_TRACE_TIME_TYPE pw_trace_GetTraceTime() {
|
|
auto delta = steady_clock::now() - start;
|
|
return floor<microseconds>(delta).count();
|
|
}
|
|
|
|
// Microsecond time source
|
|
size_t pw_trace_GetTraceTimeTicksPerSecond() { return 1000000; }
|