80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
#pragma once
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#ifdef _WIN32
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# define WIN32_LEAN_AND_MEAN
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# ifndef NOMINMAX
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# define NOMINMAX
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# endif
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# include <windows.h>
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# include <winevt.h>
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#else
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# include <dlfcn.h>
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# include <unistd.h>
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#endif
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#include <filesystem>
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namespace fs = std::filesystem;
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#ifdef _WIN32
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using dl_handle = std::remove_pointer_t<HMODULE>;
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struct dl_handle_deleter {
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void operator()(HMODULE handle) {
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FreeLibrary(handle);
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}
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};
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static inline dl_handle * dl_load_library(const fs::path & path) {
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// suppress error dialogs for missing DLLs
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DWORD old_mode = SetErrorMode(SEM_FAILCRITICALERRORS);
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SetErrorMode(old_mode | SEM_FAILCRITICALERRORS);
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HMODULE handle = LoadLibraryW(path.wstring().c_str());
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SetErrorMode(old_mode);
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return handle;
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}
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static inline void * dl_get_sym(dl_handle * handle, const char * name) {
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DWORD old_mode = SetErrorMode(SEM_FAILCRITICALERRORS);
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SetErrorMode(old_mode | SEM_FAILCRITICALERRORS);
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void * p = (void *) GetProcAddress(handle, name);
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SetErrorMode(old_mode);
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return p;
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}
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static inline const char * dl_error() {
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return "";
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}
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#else
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using dl_handle = void;
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struct dl_handle_deleter {
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void operator()(void * handle) {
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dlclose(handle);
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}
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};
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static inline dl_handle * dl_load_library(const fs::path & path) {
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dl_handle * handle = dlopen(path.string().c_str(), RTLD_NOW | RTLD_LOCAL);
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return handle;
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}
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static inline void * dl_get_sym(dl_handle * handle, const char * name) {
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return dlsym(handle, name);
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}
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static inline const char * dl_error() {
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const char *rslt = dlerror();
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return rslt != nullptr ? rslt : "";
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}
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#endif
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