Request the realtime and monotonic clock times once per sample

Refactor the sample time code to make one call to gettimeofday
(aka the realtime clock in clock_gettime, when available) and
one to the monotonic clock.  Stores each in more appropriately
named ProcessList fields for ready access when needed.  Every
platform gets the opportunity to provide their own clock code,
and the existing Mac OS X specific code is moved below darwin
instead of in Compat.

A couple of leftover time(2) calls are converted to use these
ProcessList fields as well, instead of yet again sampling the
system clock.

Related to https://github.com/htop-dev/htop/pull/574

1 files changed, 3 insertions, 3 deletions

diff --git a/ScreenManager.c b/ScreenManager.c
index 17a76bf3..6e7551fe 100644
--- a/ScreenManager.c
+++ b/ScreenManager.c
@@ -15,6 +15,7 @@ in the source distribution for its full text.
 #include "CRT.h"
 #include "FunctionBar.h"
 #include "Object.h"
+#include "Platform.h"
 #include "ProcessList.h"
 #include "ProvideCurses.h"
 #include "XUtils.h"
@@ -92,9 +93,8 @@ void ScreenManager_resize(ScreenManager* this, int x1, int y1, int x2, int y2) {
 static void checkRecalculation(ScreenManager* this, double* oldTime, int* sortTimeout, bool* redraw, bool* rescan, bool* timedOut) {
    ProcessList* pl = this->header->pl;
 
-   struct timeval tv;
-   gettimeofday(&tv, NULL);
-   double newTime = ((double)tv.tv_sec * 10) + ((double)tv.tv_usec / 100000);
+   Platform_gettime_realtime(&pl->realtime, &pl->realtimeMs);
+   double newTime = ((double)pl->realtime.tv_sec * 10) + ((double)pl->realtime.tv_usec / 100000);
 
    *timedOut = (newTime - *oldTime > this->settings->delay);
    *rescan |= *timedOut;