75acc7bf81
Moved headers from include/libutils and include/libsysutils to libutils/include and libsysutils/include respectively, so they can be exported via these libs. They needed to be moved since Soong does not allow export from external folder. Added symlink from old locations. They are needed since Soong includes system/core/include by default. Once all modules are cleaned up to explicitly add the required libs, the symlinks will be removed. Moved headers of libutils to libutils_headers. They should be used by modules for header-only inlines. Added libutils_headers as dependency of libutils. Split of C++ headers into those that have no dependency and those that have dependency on libutils.so will be handled in a later CL. Test: Add above libs to shared lib of local module Change-Id: I122db72056b26b1f39bad1d9a0c2a1c5efda3550
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*
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* Copyright (C) 2005 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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*/
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//
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// Timer functions.
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//
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#ifndef _LIBS_UTILS_TIMERS_H
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#define _LIBS_UTILS_TIMERS_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <utils/Compat.h>
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// ------------------------------------------------------------------
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// C API
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef int64_t nsecs_t; // nano-seconds
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static CONSTEXPR inline nsecs_t seconds_to_nanoseconds(nsecs_t secs)
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{
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return secs*1000000000;
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}
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static CONSTEXPR inline nsecs_t milliseconds_to_nanoseconds(nsecs_t secs)
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{
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return secs*1000000;
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}
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static CONSTEXPR inline nsecs_t microseconds_to_nanoseconds(nsecs_t secs)
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{
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return secs*1000;
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}
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static CONSTEXPR inline nsecs_t nanoseconds_to_seconds(nsecs_t secs)
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{
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return secs/1000000000;
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}
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static CONSTEXPR inline nsecs_t nanoseconds_to_milliseconds(nsecs_t secs)
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{
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return secs/1000000;
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}
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static CONSTEXPR inline nsecs_t nanoseconds_to_microseconds(nsecs_t secs)
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{
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return secs/1000;
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}
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static CONSTEXPR inline nsecs_t s2ns(nsecs_t v) {return seconds_to_nanoseconds(v);}
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static CONSTEXPR inline nsecs_t ms2ns(nsecs_t v) {return milliseconds_to_nanoseconds(v);}
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static CONSTEXPR inline nsecs_t us2ns(nsecs_t v) {return microseconds_to_nanoseconds(v);}
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static CONSTEXPR inline nsecs_t ns2s(nsecs_t v) {return nanoseconds_to_seconds(v);}
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static CONSTEXPR inline nsecs_t ns2ms(nsecs_t v) {return nanoseconds_to_milliseconds(v);}
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static CONSTEXPR inline nsecs_t ns2us(nsecs_t v) {return nanoseconds_to_microseconds(v);}
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static CONSTEXPR inline nsecs_t seconds(nsecs_t v) { return s2ns(v); }
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static CONSTEXPR inline nsecs_t milliseconds(nsecs_t v) { return ms2ns(v); }
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static CONSTEXPR inline nsecs_t microseconds(nsecs_t v) { return us2ns(v); }
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enum {
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SYSTEM_TIME_REALTIME = 0, // system-wide realtime clock
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SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
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SYSTEM_TIME_PROCESS = 2, // high-resolution per-process clock
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SYSTEM_TIME_THREAD = 3, // high-resolution per-thread clock
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SYSTEM_TIME_BOOTTIME = 4 // same as SYSTEM_TIME_MONOTONIC, but including CPU suspend time
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};
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// return the system-time according to the specified clock
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#ifdef __cplusplus
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nsecs_t systemTime(int clock = SYSTEM_TIME_MONOTONIC);
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#else
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nsecs_t systemTime(int clock);
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#endif // def __cplusplus
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/**
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* Returns the number of milliseconds to wait between the reference time and the timeout time.
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* If the timeout is in the past relative to the reference time, returns 0.
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* If the timeout is more than INT_MAX milliseconds in the future relative to the reference time,
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* such as when timeoutTime == LLONG_MAX, returns -1 to indicate an infinite timeout delay.
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* Otherwise, returns the difference between the reference time and timeout time
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* rounded up to the next millisecond.
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*/
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int toMillisecondTimeoutDelay(nsecs_t referenceTime, nsecs_t timeoutTime);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _LIBS_UTILS_TIMERS_H
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