84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
/*
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* Copyright (c) 2020 Institute of Parallel And Distributed Systems (IPADS), Shanghai Jiao Tong University (SJTU)
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* OS-Lab-2020 (i.e., ChCore) is licensed under the Mulan PSL v1.
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* You can use this software according to the terms and conditions of the Mulan PSL v1.
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* You may obtain a copy of Mulan PSL v1 at:
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* http://license.coscl.org.cn/MulanPSL
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR
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* PURPOSE.
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* See the Mulan PSL v1 for more details.
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*/
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#pragma once
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#include <common/registers.h>
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#include <common/types.h>
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#include <common/list.h>
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#include <common/kprint.h>
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#include <common/machine.h>
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struct thread;
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/* BUDGET represents the number of TICKs */
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#define DEFAULT_BUDGET 2
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#define TICK_MS 500
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#define MAX_PRIO 255
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#define MIN_PRIO 0
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#define PRIO_NUM (MAX_PRIO + 1)
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#define NO_AFF -1
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/* Data structures */
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#define STATE_STR_LEN 20
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enum thread_state {
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TS_INIT = 0,
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TS_READY,
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/* intermediate stat used by sched */
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TS_INTER,
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TS_RUNNING,
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TS_EXIT,
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/* waiting IPC or etc */
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TS_WAITING,
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/* waiting to be exited */
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TS_EXITING,
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};
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#define TYPE_STR_LEN 20
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enum thread_type {
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TYPE_IDLE = 0,
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/* ROOT thread has all cap, it is also a user thread */
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TYPE_ROOT,
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TYPE_USER,
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TYPE_SHADOW,
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TYPE_KERNEL,
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TYPE_TESTS
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};
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typedef struct sched_cont {
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u32 budget;
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char pad[pad_to_cache_line(sizeof(u32))];
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} sched_cont_t;
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/* size in registers.h (to be used in asm) */
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typedef struct arch_exec_cont {
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u64 reg[REG_NUM];
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} arch_exec_cont_t;
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struct thread_ctx {
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/* Executing Context */
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arch_exec_cont_t ec;
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/* Thread Type */
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u32 type;
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};
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extern char thread_type[][TYPE_STR_LEN];
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extern char thread_state[][STATE_STR_LEN];
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u64 switch_context(void);
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