4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2001, 2004 Develer S.r.l. (http://www.develer.com/)
30 * Copyright 1999, 2000, 2001 Bernie Innocenti <bernie@codewiz.org>
34 * \brief Internal scheduler structures and definitions for processes.
38 * \author Bernie Innocenti <bernie@codewiz.org>
44 #include "cfg/cfg_kern.h"
45 #include <cfg/compiler.h>
47 #include <cpu/types.h> /* for cpu_stack_t */
49 #include <mware/list.h>
51 typedef struct Process
53 Node link; /**< Link Process into scheduler lists */
54 cpustack_t *stack; /**< Per-process SP */
55 iptr_t user_data; /**< Custom data passed to the process */
57 #if CONFIG_KERN_SIGNALS
58 sigmask_t sig_wait; /**< Signals the process is waiting for */
59 sigmask_t sig_recv; /**< Received signals */
62 #if CONFIG_KERN_PREEMPTIVE
63 int forbid_cnt; /**< Nesting count for proc_forbid()/proc_permit(). */
67 uint16_t flags; /**< Flags */
70 #if CONFIG_KERN_HEAP | CONFIG_KERN_MONITOR | (ARCH & ARCH_EMUL)
71 cpustack_t *stack_base; /**< Base of process stack */
72 size_t stack_size; /**< Size of process stack */
75 #if CONFIG_KERN_MONITOR
87 * \name Flags for Process.flags.
90 #define PF_FREESTACK BV(0) /**< Free the stack when process dies */
94 /** Track running processes. */
95 extern REGISTER Process *CurrentProcess;
97 /** Track ready processes. */
98 extern REGISTER List ProcReadyList;
102 * Enqueue a task in the ready list.
104 * \note This is *NOT* protected against
106 #define SCHED_ENQUEUE(proc) ADDTAIL(&ProcReadyList, &(proc)->link)
108 /** Schedule to another process *without* adding the current to the ready list. */
109 void proc_schedule(void);
111 #if CONFIG_KERN_MONITOR
112 /** Initialize the monitor */
113 void monitor_init(void);
115 /** Register a process into the monitor */
116 void monitor_add(Process *proc, const char *name);
118 /** Unregister a process from the monitor */
119 void monitor_remove(Process *proc);
121 /** Rename a process */
122 void monitor_rename(Process *proc, const char *name);
123 #endif /* CONFIG_KERN_MONITOR */
125 #endif /* KERN_PROC_P_H */