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[/] [openrisc/] [tags/] [gnu-src/] [gdb-6.8/] [pre-binutils-2.20.1-sync/] [gdb/] [osf-share/] [cma_tcb_defs.h] - Rev 275
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/* * (c) Copyright 1990-1996 OPEN SOFTWARE FOUNDATION, INC. * (c) Copyright 1990-1996 HEWLETT-PACKARD COMPANY * (c) Copyright 1990-1996 DIGITAL EQUIPMENT CORPORATION * (c) Copyright 1991, 1992 Siemens-Nixdorf Information Systems * To anyone who acknowledges that this file is provided "AS IS" without * any express or implied warranty: permission to use, copy, modify, and * distribute this file for any purpose is hereby granted without fee, * provided that the above copyright notices and this notice appears in * all source code copies, and that none of the names listed above be used * in advertising or publicity pertaining to distribution of the software * without specific, written prior permission. None of these organizations * makes any representations about the suitability of this software for * any purpose. */ /* * TCB-related type definitions. */ #ifndef CMA_TCB_DEFS #define CMA_TCB_DEFS /* * INCLUDE FILES */ # if !_CMA_THREAD_SYNC_IO_ # include <cma_thread_io.h> # endif #include <cma.h> #include <cma_debug_client.h> #include <cma_attr.h> #include <cma_defs.h> #include <cma_handle.h> #include <cma_queue.h> #if _CMA_OS_ == _CMA__UNIX # if defined(SNI_DCOSX) # include <sys/ucontext.h> # endif # include <signal.h> #endif #include <cma_sched.h> /* * CONSTANTS AND MACROS */ #if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX # define cma__c_ibmr2_ctx_stack_size 2048 # define cma__c_ibmr2_ctx_stack_top (cma__c_ibmr2_ctx_stack_size - 1) #endif /* * TYPEDEFS */ #ifndef __STDC__ # if _CMA_HARDWARE_ != _CMA__HPPA struct CMA__T_SEMAPHORE; # endif struct CMA__T_INT_CV; struct CMA__T_INT_MUTEX; struct CMA__T_INT_TCB; #endif typedef cma_t_address *cma__t_context_list; typedef struct CMA__T_TCB_PAD { /* * Adjust to align the tcb prolog at byte 32. * 12 bytes are required as object header is currently * 20 bytes long. */ cma_t_integer pad1; /* pad bytes */ cma_t_integer pad2; /* pad bytes */ cma_t_integer pad3; /* pad bytes */ } cma__t_tcb_pad; #if (_CMA_OS_ == _CMA__UNIX) && !_CMA_THREAD_SYNC_IO_ typedef struct CMA__T_TCB_SELECT { cma__t_queue queue; #if (_CMA_UNIX_TYPE != _CMA__SVR4) cma__t_file_mask *rfds; cma__t_file_mask *wfds; cma__t_file_mask *efds; #else cma__t_poll_info poll_info; #endif /* (_CMA_UNIX_TYPE != _CMA__SVR4) */ cma_t_integer nfound; } cma__t_tcb_select; #endif typedef struct CMA__T_TCB_TIME { cma__t_queue queue; /* must be first entry! */ cma_t_integer mode; struct CMA__T_SEMAPHORE *semaphore; /* used for timed semaphores */ cma_t_date_time wakeup_time; cma_t_integer quanta_remaining; } cma__t_tcb_time; typedef enum CMA__T_DEBEVT { cma__c_debevt_activating = 1, /* First transition to running */ cma__c_debevt_running = 2, /* Any transition to running */ cma__c_debevt_preempting = 3, /* Preemted (replaced) another thread */ cma__c_debevt_blocking = 4, /* Any transition to blocked */ cma__c_debevt_terminating = 5, /* Final state transition */ cma__c_debevt_term_alert = 6, /* Terminated due to alert/cancel */ cma__c_debevt_term_exc = 7, /* Terminated due to exception */ cma__c_debevt_exc_handled = 8 /* Exception is being handled */ } cma__t_debevt; #define cma__c_debevt__first ((cma_t_integer)cma__c_debevt_activating) #define cma__c_debevt__last ((cma_t_integer)cma__c_debevt_exc_handled) #define cma__c_debevt__dim (cma__c_debevt__last + 1) /* * Type defining thread substate, which is used by the debugger. * If the state is blocked, substate indicates WHY the thread is blocked. */ typedef enum CMA__T_SUBSTATE { cma__c_substa_normal = 0, cma__c_substa_mutex = 1, cma__c_substa_cv = 2, cma__c_substa_timed_cv = 3, cma__c_substa_term_alt = 4, cma__c_substa_term_exc = 5, cma__c_substa_delay =6, cma__c_substa_not_yet_run = 7 } cma__t_substate; #define cma__c_substa__first ((cma_t_integer)cma__c_substa_normal) #define cma__c_substa__last ((cma_t_integer)cma__c_substa_not_yet_run) #define cma__c_substa__dim (cma__c_substa__last + 1) /* * Per-thread state for the debugger */ typedef struct CMA__T_TCB_DEBUG { cma_t_boolean on_hold; /* Thread was put on hold by debugger */ cma_t_boolean activated; /* Activation event was reported */ cma_t_boolean did_preempt; /* Thread preempted prior one */ cma_t_address start_pc; /* Start routine address */ cma_t_address object_addr; /* Addr of thread object */ cma__t_substate substate; /* Reason blocked, terminated, etc.*/ cma_t_boolean notify_debugger;/* Notify debugger thread is running */ cma_t_address SPARE2; /* SPARE */ cma_t_address SPARE3; /* SPARE */ struct CMA__T_INT_TCB *preempted_tcb; /* TCB of thread that got preempted */ cma_t_boolean flags[cma__c_debevt__dim]; /* Events enabled for this thread */ } cma__t_tcb_debug; typedef struct CMA__T_TCB_SCHED { cma_t_integer adj_time; /* Abs. time in ticks of last prio adj */ cma_t_integer tot_time; /* Weighted ave in ticks (scaled) */ cma_t_integer time_stamp; /* Abs. time in ticks of last update */ cma_t_integer cpu_time; /* Weighted average in ticks */ cma_t_integer cpu_ticks; /* # of ticks while comp. (scaled) */ cma_t_integer q_num; /* Number of last ready queue on */ cma_t_priority priority; /* Thread priority */ cma_t_sched_policy policy; /* Scheduling policy of thread */ cma_t_boolean rtb; /* "Run 'Till Block" scheduling */ cma_t_boolean spp; /* "Strict Priority Preemption" sched */ cma_t_boolean fixed_prio; /* Fixed priority */ cma__t_sched_class class; /* Scheduling class */ struct CMA__T_VP *processor; /* Current processor (if running) */ } cma__t_tcb_sched; typedef struct CMA__T_INT_ALERT { cma_t_boolean pending : 1; /* alert_pending bit */ cma_t_boolean g_enable : 1; /* general delivery state */ cma_t_boolean a_enable : 1; /* asynchronous delivery state */ cma_t_integer spare : 29; /* Pad to longword */ cma_t_natural count; /* Alert scope nesting count */ } cma__t_int_alert; typedef enum CMA__T_STATE { cma__c_state_running = 0, /* For consistency with initial TCB */ cma__c_state_ready = 1, cma__c_state_blocked = 2, cma__c_state_terminated = 3 } cma__t_state; #define cma__c_state__first ((cma_t_integer)cma__c_state_running) #define cma__c_state__last ((cma_t_integer)cma__c_state_terminated) #define cma__c_state__dim (cma__c_state__last + 1) typedef enum CMA__T_THKIND { cma__c_thkind_initial = 0, /* Initial thread */ cma__c_thkind_normal = 1, /* Normal thread */ cma__c_thkind_null = 2 /* A null thread */ } cma__t_thkind; #define cma__c_thkind__first ((cma_t_integer)cma__c_thkind_initial) #define cma__c_thkind__last ((cma_t_integer)cma__c_thkind_null) #define cma__c_thkind__dim (cma__c_thkind__last + 1) typedef enum CMA__T_SYSCALL_STATE { cma__c_syscall_ok = 1, /* syscall was not interrupted */ cma__c_syscall_intintrpt = 1, /* syscall was interrupted by VTALRM */ cma__c_syscall_extintrpt = 2 /* syscall was interrupted by external signal */ } cma__t_syscall_state; typedef struct CMA__T_INT_TCB { /* * Fixed part of TCB. * Modifications to the following three fields must be coordinated. * The object header must always be first, and the prolog must always * remain at the same offset (32) for all time. Thus the object header * must never grow beyond a maximum of 32 bytes. */ cma__t_object header; /* Common object header */ cma__t_tcb_pad pad1; /* Pad required to align prolog */ cma_t_tcb_prolog prolog; /* Standard prolog for tasks, threads */ /* * Floating part of TCB (fields here on are free to be moved and resized). */ cma__t_queue threads; /* List of all known threads */ cma__t_int_attr *attributes; /* Backpointer to attr obj */ cma__t_state state; /* Current state of thread */ cma__t_thkind kind; /* Which kind of thread */ struct CMA__T_INT_MUTEX *mutex; /* Mutex to control TCB access */ struct CMA__T_INT_CV *term_cv; /* CV for join */ struct CMA__T_INT_MUTEX *tswait_mutex; /* Mutex for thread-synchronous waits */ struct CMA__T_INT_CV *tswait_cv; /* CV for thread-synchronous waits */ cma_t_start_routine start_code; /* Address of start routine */ cma_t_address start_arg; /* Argument to pass to start_code */ cma__t_queue stack; /* Queue header for stack descr. */ cma_t_natural context_count; /* Size of context array */ cma__t_context_list contexts; /* Context value array pointer */ cma_t_exit_status exit_status; /* Exit status of thread */ cma_t_address return_value; /* Thread's return value */ cma__t_async_ctx async_ctx; /* Asynchronous context switch info */ cma__t_static_ctx static_ctx; /* Static context switch information */ cma_t_integer event_status; /* Status of semaphore operation */ cma__t_tcb_time timer; /* Time info for dispatcher */ cma__t_tcb_sched sched; /* Scheduler info */ cma__t_tcb_debug debug; /* Debugger info */ #if _CMA_OS_ == _CMA__UNIX # if !_CMA_THREAD_SYNC_IO_ cma__t_tcb_select select; /* Select info for timed selects */ # endif struct sigaction sigaction_data[NSIG]; #endif cma_t_natural syscall_state; /* set if one of the cma wrapped syscalls was interrupted. */ cma_t_boolean detached; /* Set if already detached */ cma_t_boolean terminated; /* Set if terminated */ cma_t_integer joiners; /* Count of joiners, for zombie frees */ cma__t_int_alert alert; /* Current alert state info */ struct CMA__T_INT_CV *wait_cv; /* CV thread is currently waiting on */ struct CMA__T_INT_MUTEX *wait_mutex; /* Mutex thread is waiting on */ struct EXC_CONTEXT_T *exc_stack; /* Top of exception stack */ #if _CMA_PLATFORM_ == _CMA__IBMR2_UNIX char ctx_stack[cma__c_ibmr2_ctx_stack_size]; #endif cma_t_integer thd_errno; /* Per-thread errno value */ #if _CMA_OS_ == _CMA__VMS cma_t_integer thd_vmserrno; /* Per-thread VMS errno value */ #endif } cma__t_int_tcb; #endif
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