diff options
Diffstat (limited to 'compat/timer-resolution.cpp')
| -rw-r--r-- | compat/timer-resolution.cpp | 59 |
1 files changed, 29 insertions, 30 deletions
diff --git a/compat/timer-resolution.cpp b/compat/timer-resolution.cpp index d59c250d..eece39e9 100644 --- a/compat/timer-resolution.cpp +++ b/compat/timer-resolution.cpp @@ -5,16 +5,21 @@ * copyright notice and this permission notice appear in all copies. */ +#ifdef _WIN32 + #include "timer-resolution.hpp" +#include "time.hpp" +#include "compat/util.hpp" -#if defined _WIN32 -# include <QLibrary> -# include <QDebug> +#include <utility> -using namespace timer_impl; +#include <QLibrary> +#include <QDebug> -static funptr_NtSetTimerResolution init_timer_resolution_funptr(); -static funptr_NtSetTimerResolution get_funptr(); +#include <windows.h> + +using namespace time_units; +using namespace timer_impl; static funptr_NtSetTimerResolution init_timer_resolution_funptr() { @@ -49,37 +54,42 @@ static funptr_NtSetTimerResolution get_funptr() return ret; } -timer_resolution::timer_resolution(int msecs) : old_value(fail_()) +timer_resolution::timer_resolution() { - if (msecs <= 0 || msecs > 100) - { - qDebug() << "can't set timer resolution to" << msecs << "ms"; - return; - } + for (int k = 14; k > 0; k--) + if (unlikely(timeEndPeriod(k) == 0)) + { + qDebug() << "removed mm timer for" << k << "ms"; + k++; + } - funptr_NtSetTimerResolution set_timer_res = get_funptr(); - if (set_timer_res == nullptr) - return; + static funptr_NtSetTimerResolution set_timer_res = get_funptr(); // hundredth of a nanosecond - const ulong_ value = msecs * ulong_(10000); + //const ulong_ value = msecs * ulong_(10000); + + const ulong_ value = 156250; // default win32 timer length ntstatus_ res; + ulong_ old_value = fail_(); res = set_timer_res(value, true_(), &old_value); - if (res < 0) + if (unlikely(res != 0)) { old_value = fail_(); qDebug() << "NtSetTimerResolution erred with" << res; return; } + if (likely(std::abs(long(old_value) - long(value)) < 10000)) + return; + // see if it stuck ulong_ old_value_ = fail_(); res = set_timer_res(value, true_(), &old_value_); - if (res < 0) + if (unlikely(res != 0)) { old_value = fail_(); qDebug() << "NtSetTimerResolution check erred with" << res; @@ -92,21 +102,10 @@ timer_resolution::timer_resolution(int msecs) : old_value(fail_()) qDebug() << "NtSetTimerResolution:" << "old value didn't stick" - << "current resolution" << (t(old_value_) * t(100)) - << "ns"; + << "current resolution" << time_cast<ms>(ns(t(old_value_) * t(100))).count() << "ms"; old_value = fail_(); return; } } -timer_resolution::~timer_resolution() -{ - if (old_value != fail_()) - { - funptr_NtSetTimerResolution f = get_funptr(); - ulong_ fuzz = fail_(); - (void) f(old_value, true_(), &fuzz); - } -} - #endif |