88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
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#include "RuntimeModuleManager.h"
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#define _BSD_SOURCE // usleep()
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <dlfcn.h>
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#include "RuntimeModule.h"
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#include <iostream>
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struct RuntimeModule {
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std::string name ="";
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void *handle = nullptr;
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ino_t id = 0;
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void *data = nullptr;
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struct module_api api;
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struct module_state *state = nullptr;
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};
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void RuntimeModuleManager::RegisterModule(const char* name) {
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RuntimeModule* module = new RuntimeModule();
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module->name = name;
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mModules.push_back(module);
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}
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void RuntimeModuleManager::LoadModule(RuntimeModule* module) {
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struct stat attr;
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if ((stat(module->name.c_str(), &attr) == 0) && (module->id != attr.st_ino)) {
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std::cerr << "Detected update of module " << module->name << std::endl;
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if (module->handle) {
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std::cerr << "Unloading module " << module->name << std::endl;
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module->api.unload(module->state);
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dlclose(module->handle);
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}
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std::cerr << "Opening module " << module->name << std::endl;
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void *handle = dlopen(module->name.c_str(), RTLD_NOW);
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if (handle) {
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module->handle = handle;
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module->id = attr.st_ino;
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std::cerr << "Loading API symbol" << std::endl;
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const struct module_api *api = (module_api*) dlsym(module->handle, "MODULE_API");
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if (api != NULL) {
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module->api = *api;
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if (module->state == NULL) {
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std::cerr << "Initializing module" << std::endl;
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module->state = module->api.init();
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}
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std::cerr << "Reloading module" << std::endl;
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module->api.reload(module->state);
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} else {
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dlclose(module->handle);
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module->handle = NULL;
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module->id = 0;
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}
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} else {
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module->handle = NULL;
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module->id = 0;
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}
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}
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}
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void RuntimeModuleManager::Update(float dt) {
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for (int i = 0; i < mModules.size(); i++) {
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LoadModule(mModules[i]);
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if (mModules[i]->handle) {
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mModules[i]->api.step(mModules[i]->state);
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}
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}
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}
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void RuntimeModuleManager::UnloadModules() {
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for (int i = 0; i < mModules.size(); i++) {
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if (mModules[i]->handle) {
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mModules[i]->api.finalize(mModules[i]->state);
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mModules[i]->state = nullptr;
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dlclose(mModules[i]->handle);
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mModules[i]->handle = 0;
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mModules[i]->id = 0;
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delete mModules[i];
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}
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}
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}
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