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26df3579a3
The type of the QuadPart member of the LARGE_INTEGER union is actually LONGLONG, so we should cast to LONGLONG instead of int. This avoids truncation should (ms * 10000.0f) exceed 2^31-1.
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/**
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* Looking Glass
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* Copyright (C) 2017-2021 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "windows/delay.h"
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#include "common/debug.h"
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NTSYSCALLAPI NTSTATUS NTAPI NtDelayExecution(
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_In_ BOOLEAN Alertable,
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_In_opt_ PLARGE_INTEGER DelayInterval
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);
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NTSYSCALLAPI NTSTATUS NTAPI NtSetTimerResolution(
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_In_ ULONG DesiredTime,
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_In_ BOOLEAN SetResolution,
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_Out_ PULONG ActualTime
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);
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void delayInit(void)
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{
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ULONG actualResolution;
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NtSetTimerResolution(1, true, &actualResolution);
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DEBUG_INFO("System timer resolution: %.1f μs", actualResolution / 10.0);
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}
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void delayExecution(float ms)
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{
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LARGE_INTEGER interval = { .QuadPart = -1 * (LONGLONG)(ms * 10000.0f) };
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NtDelayExecution(FALSE, &interval);
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}
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