dolphin/Source/Core/Common/DynamicLibrary.cpp

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// Copyright 2019 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.
#include "Common/DynamicLibrary.h"
#include <cstring>
#include "Common/Assert.h"
#include "Common/StringUtil.h"
#ifdef _WIN32
#include <Windows.h>
#else
#include <dlfcn.h>
#endif
namespace Common
{
DynamicLibrary::DynamicLibrary() = default;
DynamicLibrary::DynamicLibrary(const char* filename)
{
Open(filename);
}
DynamicLibrary::~DynamicLibrary()
{
Close();
}
std::string DynamicLibrary::GetUnprefixedFilename(const char* filename)
{
#if defined(_WIN32)
return std::string(filename) + ".dll";
#elif defined(__APPLE__)
return std::string(filename) + ".dylib";
#else
return std::string(filename) + ".so";
#endif
}
std::string DynamicLibrary::GetVersionedFilename(const char* libname, int major, int minor)
{
#if defined(_WIN32)
if (major >= 0 && minor >= 0)
return StringFromFormat("%s-%d-%d.dll", libname, major, minor);
else if (major >= 0)
return StringFromFormat("%s-%d.dll", libname, major);
else
return StringFromFormat("%s.dll", libname);
#elif defined(__APPLE__)
const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
if (major >= 0 && minor >= 0)
return StringFromFormat("%s%s.%d.%d.dylib", prefix, libname, major, minor);
else if (major >= 0)
return StringFromFormat("%s%s.%d.dylib", prefix, libname, major);
else
return StringFromFormat("%s%s.dylib", prefix, libname);
#else
const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
if (major >= 0 && minor >= 0)
return StringFromFormat("%s%s.so.%d.%d", prefix, libname, major, minor);
else if (major >= 0)
return StringFromFormat("%s%s.so.%d", prefix, libname, major);
else
return StringFromFormat("%s%s.so", prefix, libname);
#endif
}
bool DynamicLibrary::Open(const char* filename)
{
#ifdef _WIN32
m_handle = reinterpret_cast<void*>(LoadLibraryA(filename));
#else
m_handle = dlopen(filename, RTLD_NOW);
#endif
return m_handle != nullptr;
}
void DynamicLibrary::Close()
{
if (!IsOpen())
return;
#ifdef _WIN32
FreeLibrary(reinterpret_cast<HMODULE>(m_handle));
#else
dlclose(m_handle);
#endif
m_handle = nullptr;
}
void* DynamicLibrary::GetSymbolAddress(const char* name) const
{
#ifdef _WIN32
return reinterpret_cast<void*>(GetProcAddress(reinterpret_cast<HMODULE>(m_handle), name));
#else
return reinterpret_cast<void*>(dlsym(m_handle, name));
#endif
}
} // namespace Common