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xz/Windows: Use GetTickCount64() with MinGW-w64 if using Vista threads.

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This commit is contained in:
Lasse Collin 2023-09-24 00:21:22 +03:00
parent 988e09f27b
commit cdb4d91f24
1 changed files with 11 additions and 3 deletions
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14
src/xz/mytime.c
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@ -12,7 +12,7 @@
#include "private.h" #include "private.h"
#if defined(_MSC_VER) #if defined(MYTHREAD_VISTA) || defined(_MSC_VER)
// Nothing // Nothing
#elif defined(HAVE_CLOCK_GETTIME) #elif defined(HAVE_CLOCK_GETTIME)
# include <time.h> # include <time.h>
@ -47,8 +47,16 @@ static uint64_t next_flush;
static uint64_t static uint64_t
mytime_now(void) mytime_now(void)
{ {
#if defined(_MSC_VER) #if defined(MYTHREAD_VISTA) || defined(_MSC_VER)
// NOTE: This requires Windows Vista or later. // Since there is no SIGALRM on Windows, this function gets
// called frequently when the progress indicator is in use.
// Progress indicator doesn't need high-resolution time.
// GetTickCount64() has very low overhead but needs at least WinVista.
//
// MinGW-w64 provides the POSIX functions clock_gettime() and
// gettimeofday() in a manner that allow xz to run on older
// than WinVista. If the threading method needs WinVista anyway,
// there's no reason to avoid a WinVista API here either.
return GetTickCount64(); return GetTickCount64();
#elif defined(HAVE_CLOCK_GETTIME) #elif defined(HAVE_CLOCK_GETTIME)