You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: PVMupen64Plus-NXCore.m
    path of file: ./repos/Provenance/Cores/Mupen64Plus-NX/PVMupen64Plus-NXCore
    
    the code of the file until where you have to start completion: /*
 Copyright (c) 2010, OpenEmu Team

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
     * Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
     * Redistributions in
    
function for the plugin and release the library */
        PluginShutdown = (ptr_PluginShutdown) osal_dynlib_getproc(plugins[i], "PluginShutdown");
        if (PluginShutdown != NULL) {
            m64p_error status = (*PluginShutdown)();
            if (status == M64ERR_SUCCESS) {
                ILOG(@"Shutdown plugin");
            } else {

				ELOG(@"Shutdown plugin type %i failed: %i", i, status);
            }
        }
        if(dlclose(plugins[i]) != 0) {
            ELOG(@"Failed to dlclose plugin type %i", i);
        } else {
            ILOG(@"dlclosed plugin type %i", i);
        }
        plugins[i] = NULL;
    }
    
    return M64ERR_SUCCESS;
}

- (dispatch_time_t)frameTime {
    float frameTime = 1.0/[self frameInterval];
    __block BOOL expired = NO;
    dispatch_time_t killTime = dispatch_time(DISPATCH_TIME_NOW, frameTime * NSEC_PER_SEC);
    return killTime;
}

- (void)videoInterrupt {
    dispatch_semaphore_signal(coreWaitToEndFrameSemaphore);
    
    dispatch_semaphore_wait(mupenWaitToBeginFrameSemaphore, [self frameTime]);
}

- (void)swapBuffers {
    [self.rend