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Reformat stopwatch.h for readability

develop
Petr Mrázek 2011-05-23 04:19:17 +02:00
parent 95f3f5d10e
commit 040b5be290
1 changed files with 35 additions and 33 deletions
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48
library/include/dfhack/extra/stopwatch.h
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@ -1,4 +1,7 @@
// Returns the amount of milliseconds elapsed since the UNIX epoch.
// Works on both windows and linux.
// source: http://stackoverflow.com/questions/1861294/how-to-calculate-execution-time-of-a-code-snippet-in-c // source: http://stackoverflow.com/questions/1861294/how-to-calculate-execution-time-of-a-code-snippet-in-c
#ifndef LINUX_BUILD #ifndef LINUX_BUILD
#include <Windows.h> #include <Windows.h>
#else #else
@ -6,40 +9,39 @@
#include <ctime> #include <ctime>
#endif #endif
/* Returns the amount of milliseconds elapsed since the UNIX epoch. Works on both #ifdef LINUX_BUILD // Linux
* windows and linux. */ uint64_t GetTimeMs64()
{
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t ret = tv.tv_usec;
// Convert from micro seconds (10^-6) to milliseconds (10^-3)
ret /= 1000;
// Adds the seconds (10^0) after converting them to milliseconds (10^-3)
ret += (tv.tv_sec * 1000);
return ret;
}
#else // Windows
uint64_t GetTimeMs64() uint64_t GetTimeMs64()
{ {
#ifndef LINUX_BUILD
/* Windows */
FILETIME ft; FILETIME ft;
LARGE_INTEGER li; LARGE_INTEGER li;
/* Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC) and copy it // Get the amount of 100 nano seconds intervals elapsed since January 1, 1601 (UTC)
* to a LARGE_INTEGER structure. */ // and copy it to a LARGE_INTEGER structure.
GetSystemTimeAsFileTime(&ft); GetSystemTimeAsFileTime(&ft);
li.LowPart = ft.dwLowDateTime; li.LowPart = ft.dwLowDateTime;
li.HighPart = ft.dwHighDateTime; li.HighPart = ft.dwHighDateTime;
uint64_t ret = li.QuadPart; uint64_t ret = li.QuadPart;
ret -= 116444736000000000LL; /* Convert from file time to UNIX epoch time. */ // Convert from file time to UNIX epoch time.
ret /= 10000; /* From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals */ ret -= 116444736000000000LL;
// From 100 nano seconds (10^-7) to 1 millisecond (10^-3) intervals
ret /= 10000;
return ret; return ret;
#else
/* Linux */
struct timeval tv;
gettimeofday(&tv, NULL);
uint64_t ret = tv.tv_usec;
/* Convert from micro seconds (10^-6) to milliseconds (10^-3) */
ret /= 1000;
/* Adds the seconds (10^0) after converting them to milliseconds (10^-3) */
ret += (tv.tv_sec * 1000);
return ret;
#endif
} }
#endif