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59a56d66c7
sleep_ms() should generally be avoided when possible. This can be used to try to track down unnecessary sleeps by adding some logging. This commit on its own doesn't actually add any logging.
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
#pragma once
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#include <cstdint>
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void TimeInit();
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// Seconds.
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double time_now_d();
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// Raw time in nanoseconds.
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// The only intended use is to match the timings from VK_GOOGLE_display_timing.
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uint64_t time_now_raw();
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// This is only interesting for Linux, in relation to VK_GOOGLE_display_timing.
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double from_time_raw(uint64_t raw_time);
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double from_time_raw_relative(uint64_t raw_time);
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// Seconds, Unix UTC time
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double time_now_unix_utc();
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// Sleep. Does not necessarily have millisecond granularity, especially on Windows.
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// Requires a "reason" since sleeping generally should be very sparingly used. This
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// can be logged if desired to figure out where we're wasting time.
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void sleep_ms(int ms, const char *reason);
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// Precise sleep. Can consume a little bit of CPU on Windows at least.
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void sleep_precise(double seconds);
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// Yield. Signals that this thread is busy-waiting but wants to allow other hyperthreads to run.
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void yield();
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void GetCurrentTimeFormatted(char formattedTime[13]);
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// Most accurate timer possible - no extra double conversions. Only for spans.
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class Instant {
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public:
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static Instant Now() {
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return Instant();
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}
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double ElapsedSeconds() const;
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int64_t ElapsedNanos() const;
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private:
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Instant();
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uint64_t nativeStart_;
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#ifndef _WIN32
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int64_t nsecs_;
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#endif
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};
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