pcsx2/common/DynamicLibrary.cpp

144 lines
3.6 KiB
C++

/* PCSX2 - PS2 Emulator for PCs
* Copyright (C) 2002-2022 PCSX2 Dev Team
*
* PCSX2 is free software: you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with PCSX2.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include "common/PrecompiledHeader.h"
#include "common/DynamicLibrary.h"
#include "common/Assertions.h"
#include "common/Console.h"
#include "common/StringUtil.h"
#include <cstring>
#include "fmt/format.h"
#ifdef _WIN32
#include "common/RedtapeWindows.h"
#else
#include <dlfcn.h>
#endif
using namespace Common;
DynamicLibrary::DynamicLibrary() = default;
DynamicLibrary::DynamicLibrary(const char* filename)
{
Open(filename);
}
DynamicLibrary::DynamicLibrary(DynamicLibrary&& move)
: m_handle(move.m_handle)
{
move.m_handle = nullptr;
}
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 fmt::format("{}-{}-{}.dll", libname, major, minor);
else if (major >= 0)
return fmt::format("{}-{}.dll", libname, major);
else
return fmt::format("{}.dll", libname);
#elif defined(__APPLE__)
const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
if (major >= 0 && minor >= 0)
return fmt::format("{}{}.{}.{}.dylib", prefix, libname, major, minor);
else if (major >= 0)
return fmt::format("{}{}.{}.dylib", prefix, libname, major);
else
return fmt::format("{}{}.dylib", prefix, libname);
#else
const char* prefix = std::strncmp(libname, "lib", 3) ? "lib" : "";
if (major >= 0 && minor >= 0)
return fmt::format("{}{}.so.{}.{}", prefix, libname, major, minor);
else if (major >= 0)
return fmt::format("{}{}.so.{}", prefix, libname, major);
else
return fmt::format("{}{}.so", prefix, libname);
#endif
}
bool DynamicLibrary::Open(const char* filename)
{
#ifdef _WIN32
m_handle = reinterpret_cast<void*>(LoadLibraryW(StringUtil::UTF8StringToWideString(filename).c_str()));
if (!m_handle)
{
Console.Error(fmt::format("(DynamicLibrary) Loading {} failed: {}", filename, GetLastError()));
return false;
}
return true;
#else
m_handle = dlopen(filename, RTLD_NOW);
if (!m_handle)
{
const char* err = dlerror();
Console.Error(fmt::format("(DynamicLibrary) Loading {} failed: {}", filename, err ? err : ""));
return false;
}
return true;
#endif
}
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
}
DynamicLibrary& DynamicLibrary::operator=(DynamicLibrary&& move)
{
Close();
m_handle = move.m_handle;
move.m_handle = nullptr;
return *this;
}