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-rw-r--r--gpxe/src/core/process.c106
1 files changed, 0 insertions, 106 deletions
diff --git a/gpxe/src/core/process.c b/gpxe/src/core/process.c
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--- a/gpxe/src/core/process.c
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-/*
- * 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,
-};