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Diffstat (limited to 'gpxe/src/core/process.c')
-rw-r--r-- | gpxe/src/core/process.c | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/gpxe/src/core/process.c b/gpxe/src/core/process.c deleted file mode 100644 index 9c13e020..00000000 --- a/gpxe/src/core/process.c +++ /dev/null @@ -1,106 +0,0 @@ -/* - * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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 2 of the - * License, or 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, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -FILE_LICENCE ( GPL2_OR_LATER ); - -#include <gpxe/list.h> -#include <gpxe/init.h> -#include <gpxe/process.h> - -/** @file - * - * Processes - * - * We implement a trivial form of cooperative multitasking, in which - * all processes share a single stack and address space. - */ - -/** Process run queue */ -static LIST_HEAD ( run_queue ); - -/** - * Add process to process list - * - * @v process Process - * - * It is safe to call process_add() multiple times; further calls will - * have no effect. - */ -void process_add ( struct process *process ) { - if ( list_empty ( &process->list ) ) { - DBGC ( process, "PROCESS %p starting\n", process ); - ref_get ( process->refcnt ); - list_add_tail ( &process->list, &run_queue ); - } else { - DBGC ( process, "PROCESS %p already started\n", process ); - } -} - -/** - * Remove process from process list - * - * @v process Process - * - * It is safe to call process_del() multiple times; further calls will - * have no effect. - */ -void process_del ( struct process *process ) { - if ( ! list_empty ( &process->list ) ) { - DBGC ( process, "PROCESS %p stopping\n", process ); - list_del ( &process->list ); - INIT_LIST_HEAD ( &process->list ); - ref_put ( process->refcnt ); - } else { - DBGC ( process, "PROCESS %p already stopped\n", process ); - } -} - -/** - * Single-step a single process - * - * This executes a single step of the first process in the run queue, - * and moves the process to the end of the run queue. - */ -void step ( void ) { - struct process *process; - - list_for_each_entry ( process, &run_queue, list ) { - list_del ( &process->list ); - list_add_tail ( &process->list, &run_queue ); - DBGC2 ( process, "PROCESS %p executing\n", process ); - process->step ( process ); - DBGC2 ( process, "PROCESS %p finished executing\n", process ); - break; - } -} - -/** - * Initialise processes - * - */ -static void init_processes ( void ) { - struct process *process; - - for_each_table_entry ( process, PERMANENT_PROCESSES ) - process_add ( process ); -} - -/** Process initialiser */ -struct init_fn process_init_fn __init_fn ( INIT_NORMAL ) = { - .initialise = init_processes, -}; |