diff options
Diffstat (limited to 'src/xz/mytime.c')
| -rw-r--r-- | src/xz/mytime.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/src/xz/mytime.c b/src/xz/mytime.c index 4c13d377..ddfd5deb 100644 --- a/src/xz/mytime.c +++ b/src/xz/mytime.c @@ -12,7 +12,7 @@ #include "private.h" -#if defined(_MSC_VER) +#if defined(MYTHREAD_VISTA) || defined(_MSC_VER) // Nothing #elif defined(HAVE_CLOCK_GETTIME) # include <time.h> @@ -47,8 +47,16 @@ static uint64_t next_flush; static uint64_t mytime_now(void) { -#if defined(_MSC_VER) - // NOTE: This requires Windows Vista or later. +#if defined(MYTHREAD_VISTA) || defined(_MSC_VER) + // 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(); #elif defined(HAVE_CLOCK_GETTIME) |