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LibCore: Use monotonic time when handling timers

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Liav A 2020-03-14 01:03:47 +02:00 • committed by Andreas Kling
parent b536547c52
commit 7268499c76
2 changed files with 21 additions and 5 deletions
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11
Libraries/LibCore/ElapsedTimer.cpp
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@ -28,20 +28,27 @@
#include <AK/Time.h>
#include <LibCore/ElapsedTimer.h>
#include <sys/time.h>
#include <time.h>
namespace Core {
void ElapsedTimer::start()
{
m_valid = true;
gettimeofday(&m_start_time, nullptr);
timespec now_spec;
clock_gettime(CLOCK_MONOTONIC, &now_spec);
m_start_time.tv_sec = now_spec.tv_sec;
m_start_time.tv_usec = now_spec.tv_nsec / 1000;
}
int ElapsedTimer::elapsed() const
{
ASSERT(is_valid());
struct timeval now;
gettimeofday(&now, nullptr);
timespec now_spec;
clock_gettime(CLOCK_MONOTONIC, &now_spec);
now.tv_sec = now_spec.tv_sec;
now.tv_usec = now_spec.tv_nsec / 1000;
struct timeval diff;
timeval_sub(now, m_start_time, diff);
return diff.tv_sec * 1000 + diff.tv_usec / 1000;