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65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
/*---------------------------------------------------------*\
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| CorsairDeviceGuard.h |
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| A DeviceGuard implementation for Corsair devices. |
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| On Windows platforms, a global mutex is used. |
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| Evan Mulawski, 2023-09-04 |
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\*---------------------------------------------------------*/
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#include "CorsairDeviceGuard.h"
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CorsairDeviceGuard::CorsairDeviceGuard() : DeviceGuard()
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{
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#ifdef _WIN32
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mutex_handle = CreateWindowsMutex();
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#endif
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}
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void CorsairDeviceGuard::Acquire()
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{
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#ifdef _WIN32
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while(true)
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{
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DWORD result = WaitForSingleObject(mutex_handle, INFINITE);
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if(result == WAIT_OBJECT_0)
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{
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break;
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}
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if(result == WAIT_ABANDONED)
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{
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ReleaseMutex(mutex_handle);
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}
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}
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#endif
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}
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void CorsairDeviceGuard::Release()
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{
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#ifdef _WIN32
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ReleaseMutex(mutex_handle);
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#endif
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}
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#ifdef _WIN32
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HANDLE CorsairDeviceGuard::CreateWindowsMutex()
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{
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SECURITY_DESCRIPTOR sd;
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InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION);
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SetSecurityDescriptorDacl(&sd, TRUE, NULL, FALSE);
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SECURITY_ATTRIBUTES sa;
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sa.nLength = sizeof(SECURITY_ATTRIBUTES);
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sa.lpSecurityDescriptor = &sd;
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sa.bInheritHandle = FALSE;
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return CreateMutex(&sa, FALSE, "Global\\CorsairLinkReadWriteGuardMutex");
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}
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#endif
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