Files
fennec/source/platform/linux/wayland/lib/loader.cpp
2026-01-06 19:48:28 -05:00

86 lines
3.1 KiB
C++

// =====================================================================================================================
// fennec, a free and open source game engine
// Copyright © 2025 - 2026 Medusa Slockbower
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
// =====================================================================================================================
#include <fennec/platform/linux/wayland/lib/headers/wayland-client-protocols.h>
#include <fennec/platform/linux/wayland/lib/loader.h>
#define FENNEC_LIB(name) bool FENNEC_HAS_LIB_##name;
#define FENNEC_SYMBOL(ret, fn, ...) using WAYLAND_sym_##fn = ret(*)(__VA_ARGS__); \
WAYLAND_sym_##fn WAYLAND_##fn;
#define FENNEC_GLOBAL(type, name) type* WAYLAND_##name;
#include <fennec/platform/linux/wayland/lib/sym.h>
namespace fennec
{
namespace libwayland
{
using shared_object = platform::shared_object;
struct shared_lib {
shared_object* obj;
const cstring name;
};
static int _load_count = 0;
// Create private variables
#define FENNEC_LIB(lib) static shared_lib _FENNEC_LIB_##lib = { nullptr, FENNEC_LIB_##lib };
#include <fennec/platform/linux/wayland/lib/sym.h>
bool load_symbols(platform* platform) {
if (_load_count++ != 0) {
return true;
}
shared_lib* current_lib = nullptr;
#define FENNEC_LIB(lib) _FENNEC_LIB_##lib.obj = platform->load_object(_FENNEC_LIB_##lib.name); \
FENNEC_HAS_LIB_##lib = _FENNEC_LIB_##lib.obj != nullptr; \
if(not FENNEC_HAS_LIB_##lib) { \
unload_symbols(platform); \
return false; \
} \
current_lib = &_FENNEC_LIB_##lib;
#define FENNEC_SYMBOL(ret, fn, ...) WAYLAND_##fn = (WAYLAND_sym_##fn)(platform->find_symbol(current_lib->obj, #fn)); \
assertf(WAYLAND_##fn != nullptr, "Failed to find symbol: " #fn);
#define FENNEC_GLOBAL(type, name) WAYLAND_##name = (type*)(platform->find_symbol(current_lib->obj, #name)); \
assertf(WAYLAND_##name != nullptr, "Failed to find global: " #name);
#include <fennec/platform/linux/wayland/lib/sym.h>
return true;
}
void unload_symbols(platform* platform) {
if (--_load_count != 0) {
return;
}
#define FENNEC_LIB(lib) platform->unload_object(_FENNEC_LIB_##lib.obj); \
_FENNEC_LIB_##lib.obj = nullptr;
#define FENNEC_SYMBOL(ret, fn, ...) WAYLAND_##fn = nullptr;
#define FENNEC_GLOBAL(type, name) WAYLAND_##name = nullptr;
#include <fennec/platform/linux/wayland/lib/sym.h>
}
}
}