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test: add rnd and delay tools.

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This commit is contained in:
Leo Yuriev
2017-04-21 18:33:35 +03:00
parent 99dd373215
commit 2523170806
7 changed files with 389 additions and 8 deletions
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33
test/chrono.cc
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@@ -71,7 +71,7 @@ time from_ms(uint64_t ms) {
return result;
}
time now() {
time now_realtime() {
#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS)
FILETIME filetime;
GetSystemTimeAsFileTime(&filetime);
@@ -87,4 +87,35 @@ time now() {
#endif
}
time now_motonic() {
#if defined(_WIN32) || defined(_WIN64) || defined(_WINDOWS)
static uint32_t reciprocal;
static LARGE_INTEGER Frequency;
if (reciprocal == 0) {
if (!QueryPerformanceFrequency(&Frequency))
failure_perror("QueryPerformanceFrequency()", GetLastError());
reciprocal = (UINT64_C(1) << 32) / Frequency.QuadPart;
assert(reciprocal);
}
LARGE_INTEGER Counter;
if (!QueryPerformanceCounter(&Counter))
failure_perror("QueryPerformanceCounter()", GetLastError());
time result;
result.integer = Counter.QuadPart / Frequency.QuadPart;
uint64_t mod = Counter.QuadPart % Frequency.QuadPart;
assert(mod < UINT32_MAX);
result.fractional = UInt32x32To64((uint32_t)mod, reciprocal);
assert(result.fractional == (mod << 32) / Frequency.QuadPart);
return result;
#else
struct timespec ts;
if (unlikely(clock_gettime(CLOCK_MONOTONIC, &ts)))
failure_perror("clock_gettime(CLOCK_MONOTONIC)", errno);
return from_timespec(ts);
#endif
}
} /* namespace chrono */