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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [osf-share/] [cma_tcb_defs.h] - Blame information for rev 107

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1 106 markom
/*
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 * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC.
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 * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY
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 * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION
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 * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems
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 * To anyone who acknowledges that this file is provided "AS IS" without
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 * any express or implied warranty: permission to use, copy, modify, and
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 * distribute this file for any purpose is hereby granted without fee,
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 * provided that the above copyright notices and this notice appears in
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 * all source code copies, and that none of the names listed above be used
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 * in advertising or publicity pertaining to distribution of the software
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 * without specific, written prior permission.  None of these organizations
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 * makes any representations about the suitability of this software for
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 * any purpose.
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 */
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/*
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 *      TCB-related type definitions.
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 */
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#ifndef CMA_TCB_DEFS
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#define CMA_TCB_DEFS
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/*
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 *  INCLUDE FILES
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 */
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# if !_CMA_THREAD_SYNC_IO_
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#  include <cma_thread_io.h>
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# endif
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#include <cma.h>
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#include <cma_debug_client.h>
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#include <cma_attr.h>
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#include <cma_defs.h>
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#include <cma_handle.h>
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#include <cma_queue.h>
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#if _CMA_OS_ == _CMA__UNIX
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# if defined(SNI_DCOSX)
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#   include <sys/ucontext.h>
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# endif
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# include <signal.h>
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#endif
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#include <cma_sched.h>
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/*
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 * CONSTANTS AND MACROS
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 */
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#if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX
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# define cma__c_ibmr2_ctx_stack_size    2048
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# define cma__c_ibmr2_ctx_stack_top     (cma__c_ibmr2_ctx_stack_size - 1)
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#endif
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/*
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 * TYPEDEFS
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 */
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#ifndef __STDC__
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# if _CMA_HARDWARE_ != _CMA__HPPA
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struct CMA__T_SEMAPHORE;
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# endif
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struct CMA__T_INT_CV;
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struct CMA__T_INT_MUTEX;
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struct CMA__T_INT_TCB;
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#endif
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typedef cma_t_address           *cma__t_context_list;
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typedef struct CMA__T_TCB_PAD {
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    /*
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     * Adjust to align the tcb prolog at byte 32.
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     * 12 bytes are required as object header is currently
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     * 20 bytes long.
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     */
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    cma_t_integer       pad1;           /* pad bytes */
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    cma_t_integer       pad2;           /* pad bytes */
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    cma_t_integer       pad3;           /* pad bytes */
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    } cma__t_tcb_pad;
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#if (_CMA_OS_ == _CMA__UNIX) && !_CMA_THREAD_SYNC_IO_
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typedef struct CMA__T_TCB_SELECT {
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    cma__t_queue        queue;
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#if (_CMA_UNIX_TYPE !=  _CMA__SVR4)
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        cma__t_file_mask    *rfds;
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        cma__t_file_mask    *wfds;
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        cma__t_file_mask    *efds;
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#else
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        cma__t_poll_info        poll_info;
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#endif /* (_CMA_UNIX_TYPE !=  _CMA__SVR4) */
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    cma_t_integer       nfound;
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    } cma__t_tcb_select;
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#endif
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typedef struct CMA__T_TCB_TIME {
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    cma__t_queue        queue;          /* must be first entry! */
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    cma_t_integer       mode;
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    struct CMA__T_SEMAPHORE *semaphore; /* used for timed semaphores */
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    cma_t_date_time     wakeup_time;
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    cma_t_integer       quanta_remaining;
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    } cma__t_tcb_time;
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typedef enum CMA__T_DEBEVT {
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        cma__c_debevt_activating = 1,   /* First transition to running */
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        cma__c_debevt_running = 2,      /* Any transition to running */
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        cma__c_debevt_preempting = 3,   /* Preemted (replaced) another thread */
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        cma__c_debevt_blocking = 4,     /* Any transition to blocked */
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        cma__c_debevt_terminating = 5,  /* Final state transition */
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        cma__c_debevt_term_alert = 6,   /* Terminated due to alert/cancel */
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        cma__c_debevt_term_exc = 7,     /* Terminated due to exception */
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        cma__c_debevt_exc_handled = 8   /* Exception is being handled */
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        } cma__t_debevt;
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#define cma__c_debevt__first ((cma_t_integer)cma__c_debevt_activating)
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#define cma__c_debevt__last  ((cma_t_integer)cma__c_debevt_exc_handled)
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#define cma__c_debevt__dim (cma__c_debevt__last + 1)
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/*
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 * Type defining thread substate, which is used by the debugger.
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 * If the state is blocked, substate indicates WHY the thread is blocked.
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 */
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typedef enum CMA__T_SUBSTATE {
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    cma__c_substa_normal = 0,
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    cma__c_substa_mutex = 1,
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    cma__c_substa_cv = 2,
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    cma__c_substa_timed_cv = 3,
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    cma__c_substa_term_alt = 4,
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    cma__c_substa_term_exc = 5,
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    cma__c_substa_delay =6,
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    cma__c_substa_not_yet_run = 7
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    } cma__t_substate;
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#define cma__c_substa__first ((cma_t_integer)cma__c_substa_normal)
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#define cma__c_substa__last  ((cma_t_integer)cma__c_substa_not_yet_run)
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#define cma__c_substa__dim (cma__c_substa__last + 1)
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/*
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 * Per-thread state for the debugger
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 */
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typedef struct CMA__T_TCB_DEBUG {
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    cma_t_boolean       on_hold;        /* Thread was put on hold by debugger */
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    cma_t_boolean       activated;      /* Activation event was reported */
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    cma_t_boolean       did_preempt;    /* Thread preempted prior one */
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    cma_t_address       start_pc;       /* Start routine address */
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    cma_t_address       object_addr;    /* Addr of thread object */
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    cma__t_substate     substate;       /* Reason blocked, terminated, etc.*/
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    cma_t_boolean       notify_debugger;/* Notify debugger thread is running */
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    cma_t_address       SPARE2;         /* SPARE */
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    cma_t_address       SPARE3;         /* SPARE */
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    struct CMA__T_INT_TCB
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                        *preempted_tcb; /* TCB of thread that got preempted */
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    cma_t_boolean       flags[cma__c_debevt__dim];
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                                        /* Events enabled for this thread */
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    } cma__t_tcb_debug;
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typedef struct CMA__T_TCB_SCHED {
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    cma_t_integer       adj_time;       /* Abs. time in ticks of last prio adj */
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    cma_t_integer       tot_time;       /* Weighted ave in ticks (scaled) */
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    cma_t_integer       time_stamp;     /* Abs. time in ticks of last update */
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    cma_t_integer       cpu_time;       /* Weighted average in ticks */
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    cma_t_integer       cpu_ticks;      /* # of ticks while comp. (scaled) */
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    cma_t_integer       q_num;          /* Number of last ready queue on */
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    cma_t_priority      priority;       /* Thread priority */
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    cma_t_sched_policy  policy;         /* Scheduling policy of thread */
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    cma_t_boolean       rtb;            /* "Run 'Till Block" scheduling */
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    cma_t_boolean       spp;            /* "Strict Priority Preemption" sched */
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    cma_t_boolean       fixed_prio;     /* Fixed priority */
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    cma__t_sched_class  class;          /* Scheduling class */
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    struct CMA__T_VP    *processor;     /* Current processor (if running) */
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    } cma__t_tcb_sched;
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typedef struct CMA__T_INT_ALERT {
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    cma_t_boolean       pending : 1;    /* alert_pending bit */
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    cma_t_boolean       g_enable : 1;   /* general delivery state */
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    cma_t_boolean       a_enable : 1;   /* asynchronous delivery state */
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    cma_t_integer       spare : 29;     /* Pad to longword */
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    cma_t_natural       count;          /* Alert scope nesting count */
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    } cma__t_int_alert;
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typedef enum CMA__T_STATE {
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    cma__c_state_running = 0,            /* For consistency with initial TCB */
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    cma__c_state_ready  = 1,
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    cma__c_state_blocked = 2,
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    cma__c_state_terminated = 3
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    } cma__t_state;
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#define cma__c_state__first ((cma_t_integer)cma__c_state_running)
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#define cma__c_state__last  ((cma_t_integer)cma__c_state_terminated)
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#define cma__c_state__dim (cma__c_state__last + 1)
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typedef enum CMA__T_THKIND {
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    cma__c_thkind_initial = 0,           /* Initial thread */
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    cma__c_thkind_normal = 1,           /* Normal thread */
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    cma__c_thkind_null  = 2             /* A null thread */
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    } cma__t_thkind;
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#define cma__c_thkind__first ((cma_t_integer)cma__c_thkind_initial)
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#define cma__c_thkind__last  ((cma_t_integer)cma__c_thkind_null)
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#define cma__c_thkind__dim (cma__c_thkind__last + 1)
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typedef enum CMA__T_SYSCALL_STATE {
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        cma__c_syscall_ok = 1,                      /* syscall was not interrupted */
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        cma__c_syscall_intintrpt = 1,       /* syscall was interrupted by VTALRM */
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        cma__c_syscall_extintrpt = 2        /* syscall was interrupted by external signal */
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        } cma__t_syscall_state;
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typedef struct CMA__T_INT_TCB {
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    /*
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     * Fixed part of TCB.
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     *   Modifications to the following three fields must be coordinated.
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     *   The object header must always be first, and the prolog must always
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     *   remain at the same offset (32) for all time. Thus the object header
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     *   must never grow beyond a maximum of 32 bytes.
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     */
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    cma__t_object       header;         /* Common object header */
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    cma__t_tcb_pad      pad1;           /* Pad required to align prolog */
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    cma_t_tcb_prolog    prolog;         /* Standard prolog for tasks, threads */
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    /*
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     * Floating part of TCB (fields here on are free to be moved and resized).
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     */
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    cma__t_queue        threads;        /* List of all known threads */
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    cma__t_int_attr     *attributes;    /* Backpointer to attr obj */
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    cma__t_state        state;          /* Current state of thread */
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    cma__t_thkind       kind;           /* Which kind of thread */
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    struct CMA__T_INT_MUTEX
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                        *mutex;         /* Mutex to control TCB access */
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    struct CMA__T_INT_CV
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                        *term_cv;       /* CV for join */
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    struct CMA__T_INT_MUTEX
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                        *tswait_mutex;  /* Mutex for thread-synchronous waits */
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    struct CMA__T_INT_CV
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                        *tswait_cv;     /* CV for thread-synchronous waits */
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    cma_t_start_routine start_code;     /* Address of start routine */
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    cma_t_address       start_arg;      /* Argument to pass to start_code */
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    cma__t_queue        stack;          /* Queue header for stack descr. */
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    cma_t_natural       context_count;  /* Size of context array */
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    cma__t_context_list contexts;       /* Context value array pointer */
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    cma_t_exit_status   exit_status;    /* Exit status of thread */
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    cma_t_address       return_value;   /* Thread's return value */
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    cma__t_async_ctx    async_ctx;      /* Asynchronous context switch info */
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    cma__t_static_ctx   static_ctx;     /* Static context switch information */
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    cma_t_integer       event_status;   /* Status of semaphore operation */
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    cma__t_tcb_time     timer;          /* Time info for dispatcher */
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    cma__t_tcb_sched    sched;          /* Scheduler info */
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    cma__t_tcb_debug    debug;          /* Debugger info */
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#if _CMA_OS_ == _CMA__UNIX
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# if !_CMA_THREAD_SYNC_IO_
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    cma__t_tcb_select   select;         /* Select info for timed selects */
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# endif
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    struct sigaction    sigaction_data[NSIG];
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#endif
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    cma_t_natural       syscall_state; /* set if one of the cma wrapped syscalls was interrupted. */
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    cma_t_boolean       detached;       /* Set if already detached */
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    cma_t_boolean       terminated;     /* Set if terminated */
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    cma_t_integer       joiners;        /* Count of joiners, for zombie frees */
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    cma__t_int_alert    alert;          /* Current alert state info */
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    struct CMA__T_INT_CV
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                        *wait_cv;       /* CV thread is currently waiting on */
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    struct CMA__T_INT_MUTEX
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                        *wait_mutex;    /* Mutex thread is waiting on */
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    struct EXC_CONTEXT_T
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                        *exc_stack;     /* Top of exception stack */
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#if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX
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    char                ctx_stack[cma__c_ibmr2_ctx_stack_size];
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#endif
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    cma_t_integer       thd_errno;      /* Per-thread errno value */
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#if _CMA_OS_ == _CMA__VMS
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    cma_t_integer       thd_vmserrno;   /* Per-thread VMS errno value */
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#endif
267
    } cma__t_int_tcb;
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#endif

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