ios系统下的线程结构
2021-08-25 本文已影响0人
song91425
文件路径：usr/include/mach/thread_info.h
文件内容
/*
* Copyright (c) 2000-2005, 2015 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* Please see the License for the specific language governing rights and
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*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* @OSF_COPYRIGHT@
*/
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
*/
/*
* File: mach/thread_info
*
* Thread information structure and definitions.
*
* The defintions in this file are exported to the user. The kernel
* will translate its internal data structures to these structures
* as appropriate.
*
*/
#ifndef _MACH_THREAD_INFO_H_
#define _MACH_THREAD_INFO_H_
#include <mach/boolean.h>
#include <mach/policy.h>
#include <mach/time_value.h>
#include <mach/message.h>
#include <mach/machine/vm_types.h>
/*
* Generic information structure to allow for expansion.
*/
typedef natural_t thread_flavor_t;
typedef integer_t *thread_info_t; /* varying array of int */
#define THREAD_INFO_MAX (32) /* maximum array size */
typedef integer_t thread_info_data_t[THREAD_INFO_MAX];
/*
* Currently defined information.
*/
#define THREAD_BASIC_INFO 3 /* basic information */
struct thread_basic_info {
time_value_t user_time; /* user run time */
time_value_t system_time; /* system run time */
integer_t cpu_usage; /* scaled cpu usage percentage */
policy_t policy; /* scheduling policy in effect */
integer_t run_state; /* run state (see below) */
integer_t flags; /* various flags (see below) */
integer_t suspend_count; /* suspend count for thread */
integer_t sleep_time; /* number of seconds that thread
* has been sleeping */
};
typedef struct thread_basic_info thread_basic_info_data_t;
typedef struct thread_basic_info *thread_basic_info_t;
#define THREAD_BASIC_INFO_COUNT ((mach_msg_type_number_t) \
(sizeof(thread_basic_info_data_t) / sizeof(natural_t)))
#define THREAD_IDENTIFIER_INFO 4 /* thread id and other information */
struct thread_identifier_info {
uint64_t thread_id; /* system-wide unique 64-bit thread id */
uint64_t thread_handle; /* handle to be used by libproc */
uint64_t dispatch_qaddr; /* libdispatch queue address */
};
typedef struct thread_identifier_info thread_identifier_info_data_t;
typedef struct thread_identifier_info *thread_identifier_info_t;
#define THREAD_IDENTIFIER_INFO_COUNT ((mach_msg_type_number_t) \
(sizeof(thread_identifier_info_data_t) / sizeof(natural_t)))
/*
* Scale factor for usage field.
*/
#define TH_USAGE_SCALE 1000
/*
* Thread run states (state field).
*/
#define TH_STATE_RUNNING 1 /* thread is running normally */
#define TH_STATE_STOPPED 2 /* thread is stopped */
#define TH_STATE_WAITING 3 /* thread is waiting normally */
#define TH_STATE_UNINTERRUPTIBLE 4 /* thread is in an uninterruptible
* wait */
#define TH_STATE_HALTED 5 /* thread is halted at a
* clean point */
/*
* Thread flags (flags field).
*/
#define TH_FLAGS_SWAPPED 0x1 /* thread is swapped out */
#define TH_FLAGS_IDLE 0x2 /* thread is an idle thread */
#define TH_FLAGS_GLOBAL_FORCED_IDLE 0x4 /* thread performs global forced idle */
/*
* Thread extended info (returns same info as proc_pidinfo(...,PROC_PIDTHREADINFO,...)
*/
#define THREAD_EXTENDED_INFO 5
#define MAXTHREADNAMESIZE 64
struct thread_extended_info { // same as proc_threadinfo (from proc_info.h) & proc_threadinfo_internal (from bsd_taskinfo.h)
uint64_t pth_user_time; /* user run time */
uint64_t pth_system_time; /* system run time */
int32_t pth_cpu_usage; /* scaled cpu usage percentage */
int32_t pth_policy; /* scheduling policy in effect */
int32_t pth_run_state; /* run state (see below) */
int32_t pth_flags; /* various flags (see below) */
int32_t pth_sleep_time; /* number of seconds that thread */
int32_t pth_curpri; /* cur priority*/
int32_t pth_priority; /* priority*/
int32_t pth_maxpriority; /* max priority*/
char pth_name[MAXTHREADNAMESIZE]; /* thread name, if any */
};
typedef struct thread_extended_info thread_extended_info_data_t;
typedef struct thread_extended_info * thread_extended_info_t;
#define THREAD_EXTENDED_INFO_COUNT ((mach_msg_type_number_t) \
(sizeof(thread_extended_info_data_t) / sizeof (natural_t)))
#define THREAD_DEBUG_INFO_INTERNAL 6 /* for kernel development internal info */
#define IO_NUM_PRIORITIES 4
#define UPDATE_IO_STATS(info, size) \
{ \
info.count++; \
info.size += size; \
}
#define UPDATE_IO_STATS_ATOMIC(info, io_size) \
{ \
OSIncrementAtomic64((SInt64 *)&(info.count)); \
OSAddAtomic64(io_size, (SInt64 *)&(info.size)); \
}
struct io_stat_entry {
uint64_t count;
uint64_t size;
};
struct io_stat_info {
struct io_stat_entry disk_reads;
struct io_stat_entry io_priority[IO_NUM_PRIORITIES];
struct io_stat_entry paging;
struct io_stat_entry metadata;
struct io_stat_entry total_io;
};
typedef struct io_stat_info *io_stat_info_t;
/*
* Obsolete interfaces.
*/
#define THREAD_SCHED_TIMESHARE_INFO 10
#define THREAD_SCHED_RR_INFO 11
#define THREAD_SCHED_FIFO_INFO 12
#endif /* _MACH_THREAD_INFO_H_ */
