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Annotation of Gnu-Mach/kern/task.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1993-1988 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  *     File:   task.h
        !            28:  *     Author: Avadis Tevanian, Jr.
        !            29:  *
        !            30:  *     This file contains the structure definitions for tasks.
        !            31:  *
        !            32:  */
        !            33: 
        !            34: #ifndef        _KERN_TASK_H_
        !            35: #define _KERN_TASK_H_
        !            36: 
        !            37: #include <norma_task.h>
        !            38: #include <fast_tas.h>
        !            39: #include <net_atm.h>
        !            40: 
        !            41: #include <mach/boolean.h>
        !            42: #include <mach/port.h>
        !            43: #include <mach/time_value.h>
        !            44: #include <mach/mach_param.h>
        !            45: #include <mach/task_info.h>
        !            46: #include <kern/kern_types.h>
        !            47: #include <kern/lock.h>
        !            48: #include <kern/queue.h>
        !            49: #include <kern/pc_sample.h>
        !            50: #include <kern/processor.h>
        !            51: #include <kern/syscall_emulation.h>
        !            52: #include <vm/vm_map.h>
        !            53: 
        !            54: #if    NET_ATM
        !            55: typedef struct nw_ep_owned {
        !            56:   unsigned int ep;
        !            57:   struct nw_ep_owned *next;
        !            58: } nw_ep_owned_s, *nw_ep_owned_t;
        !            59: #endif
        !            60: 
        !            61: struct task {
        !            62:        /* Synchronization/destruction information */
        !            63:        decl_simple_lock_data(,lock)    /* Task's lock */
        !            64:        int             ref_count;      /* Number of references to me */
        !            65:        boolean_t       active;         /* Task has not been terminated */
        !            66: 
        !            67:        /* Miscellaneous */
        !            68:        vm_map_t        map;            /* Address space description */
        !            69:        queue_chain_t   pset_tasks;     /* list of tasks assigned to pset */
        !            70:        int             suspend_count;  /* Internal scheduling only */
        !            71: 
        !            72:        /* Thread information */
        !            73:        queue_head_t    thread_list;    /* list of threads */
        !            74:        int             thread_count;   /* number of threads */
        !            75:        processor_set_t processor_set;  /* processor set for new threads */
        !            76:        boolean_t       may_assign;     /* can assigned pset be changed? */
        !            77:        boolean_t       assign_active;  /* waiting for may_assign */
        !            78: 
        !            79:        /* User-visible scheduling information */
        !            80:        int             user_stop_count;        /* outstanding stops */
        !            81:        int             priority;               /* for new threads */
        !            82: 
        !            83:        /* Statistics */
        !            84:        time_value_t    total_user_time;
        !            85:                                /* total user time for dead threads */
        !            86:        time_value_t    total_system_time;
        !            87:                                /* total system time for dead threads */
        !            88: 
        !            89:        /* IPC structures */
        !            90:        decl_simple_lock_data(, itk_lock_data)
        !            91:        struct ipc_port *itk_self;      /* not a right, doesn't hold ref */
        !            92:        struct ipc_port *itk_sself;     /* a send right */
        !            93:        struct ipc_port *itk_exception; /* a send right */
        !            94:        struct ipc_port *itk_bootstrap; /* a send right */
        !            95:        struct ipc_port *itk_registered[TASK_PORT_REGISTER_MAX];
        !            96:                                        /* all send rights */
        !            97: 
        !            98:        struct ipc_space *itk_space;
        !            99: 
        !           100:        /* User space system call emulation support */
        !           101:        struct  eml_dispatch    *eml_dispatch;
        !           102: 
        !           103:        sample_control_t pc_sample;
        !           104: 
        !           105: #if    NORMA_TASK
        !           106:        long            child_node;     /* if != -1, node for new children */
        !           107: #endif /* NORMA_TASK */
        !           108: 
        !           109: #if    FAST_TAS
        !           110: #define TASK_FAST_TAS_NRAS     8       
        !           111:        vm_offset_t     fast_tas_base[TASK_FAST_TAS_NRAS];
        !           112:        vm_offset_t     fast_tas_end[TASK_FAST_TAS_NRAS];
        !           113: #endif /* FAST_TAS */
        !           114: 
        !           115: #if    NET_ATM
        !           116:        nw_ep_owned_t   nw_ep_owned;
        !           117: #endif /* NET_ATM */
        !           118: };
        !           119: 
        !           120: #define task_lock(task)                simple_lock(&(task)->lock)
        !           121: #define task_unlock(task)      simple_unlock(&(task)->lock)
        !           122: 
        !           123: #define        itk_lock_init(task)     simple_lock_init(&(task)->itk_lock_data)
        !           124: #define        itk_lock(task)          simple_lock(&(task)->itk_lock_data)
        !           125: #define        itk_unlock(task)        simple_unlock(&(task)->itk_lock_data)
        !           126: 
        !           127: /*
        !           128:  *     Exported routines/macros
        !           129:  */
        !           130: 
        !           131: extern kern_return_t   task_create(
        !           132:        task_t          parent_task,
        !           133:        boolean_t       inherit_memory,
        !           134:        task_t          *child_task);
        !           135: extern kern_return_t   task_terminate(
        !           136:        task_t          task);
        !           137: extern kern_return_t   task_suspend(
        !           138:        task_t          task);
        !           139: extern kern_return_t   task_resume(
        !           140:        task_t          task);
        !           141: extern kern_return_t   task_threads(
        !           142:        task_t          task,
        !           143:        thread_array_t  *thread_list,
        !           144:        natural_t       *count);
        !           145: extern kern_return_t   task_info(
        !           146:        task_t          task,
        !           147:        int             flavor,
        !           148:        task_info_t     task_info_out,
        !           149:        natural_t       *task_info_count);
        !           150: extern kern_return_t   task_get_special_port(
        !           151:        task_t          task,
        !           152:        int             which,
        !           153:        struct ipc_port **portp);
        !           154: extern kern_return_t   task_set_special_port(
        !           155:        task_t          task,
        !           156:        int             which,
        !           157:        struct ipc_port *port);
        !           158: extern kern_return_t   task_assign(
        !           159:        task_t          task,
        !           160:        processor_set_t new_pset,
        !           161:        boolean_t       assign_threads);
        !           162: extern kern_return_t   task_assign_default(
        !           163:        task_t          task,
        !           164:        boolean_t       assign_threads);
        !           165: 
        !           166: /*
        !           167:  *     Internal only routines
        !           168:  */
        !           169: 
        !           170: extern void            task_init();
        !           171: extern void            task_reference();
        !           172: extern void            task_deallocate();
        !           173: extern kern_return_t   task_hold();
        !           174: extern kern_return_t   task_dowait();
        !           175: extern kern_return_t   task_release();
        !           176: extern kern_return_t   task_halt();
        !           177: 
        !           178: extern kern_return_t   task_suspend_nowait();
        !           179: extern task_t          kernel_task_create();
        !           180: 
        !           181: extern task_t  kernel_task;
        !           182: 
        !           183: #endif _KERN_TASK_H_

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