obs-StreamFX/source/windll.cpp

// AUTOGENERATED COPYRIGHT HEADER START
// Copyright (C) 2020-2023 Michael Fabian 'Xaymar' Dirks <info@xaymar.com>
// AUTOGENERATED COPYRIGHT HEADER END

#include "warning-disable.hpp"
#include <Windows.h>
#include <mutex>
#include "warning-enable.hpp"

std::shared_ptr<void> local_mutex;
std::shared_ptr<void> global_mutex;

BOOL WINAPI DllMain(HINSTANCE, DWORD dwReason, LPVOID)
{
	if (dwReason == DLL_PROCESS_ATTACH) {
		// Prevent installer from progressing while StreamFX is still active.
		local_mutex  = std::shared_ptr<void>(CreateMutexW(NULL, TRUE, L"Local\\StreamFX-Setup"), [](HANDLE p) {
            ReleaseMutex(p);
            CloseHandle(p);
        });
		global_mutex = std::shared_ptr<void>(CreateMutexW(NULL, TRUE, L"Global\\StreamFX-Setup"), [](HANDLE p) {
			ReleaseMutex(p);
			CloseHandle(p);
		});
	}

	return TRUE;
}