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Copy pathWin32_variadicFunctor.cpp
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Win32_variadicFunctor.cpp
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/*
* Copyright (c), Microsoft Open Technologies, Inc.
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "win32_types.h"
#include "Win32_variadicFunctor.h"
#include <windows.h>
#include <stdexcept>
#include <map>
using namespace std;
DLLMap& DLLMap::getInstance() {
static DLLMap instance; // Instantiated on first use. Guaranteed to be destroyed.
return instance;
}
DLLMap::DLLMap() { };
LPVOID DLLMap::getProcAddress(string dll, string functionName)
{
if (find(dll) == end()) {
HMODULE mod = LoadLibraryA(dll.c_str());
if (mod == NULL) {
throw system_error(GetLastError(), system_category(), "LoadLibrary failed");
}
(*this)[dll] = mod;
}
HMODULE mod = (*this)[dll];
LPVOID fp = GetProcAddress(mod, functionName.c_str());
if (fp == nullptr) {
throw system_error(GetLastError(), system_category(), "LoadLibrary failed");
}
return fp;
}
DLLMap::~DLLMap()
{
for each(auto modPair in (*this))
{
FreeLibrary(modPair.second);
}
}