93a7aa79d6
(show thread {address})
Remove the IDLE kse state and replace it with a change in
the way threads sahre KSEs. Every KSE now has a thread, which is
considered its "owner" however a KSE may also be lent to other
threads in the same group to allow completion of in-kernel work.
n this case the owner remains the same and the KSE will revert to the
owner when the other work has been completed.
All creations of upcalls etc. is now done from
kse_reassign() which in turn is called from mi_switch or
thread_exit(). This means that special code can be removed from
msleep() and cv_wait().
kse_release() does not leave a KSE with no thread any more but
converts the existing thread into teh KSE's owner, and sets it up
for doing an upcall. It is just inhibitted from being scheduled until
there is some reason to do an upcall.
Remove all trace of the kse_idle queue since it is no-longer needed.
"Idle" KSEs are now on the loanable queue.
167 lines
5.3 KiB
C
167 lines
5.3 KiB
C
/*-
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* Copyright (c) 1993, Garrett A. Wollman.
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* Copyright (c) 1993, University of Vermont and State Agricultural College.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Necessary declarations for the `ddb' kernel debugger.
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*/
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#ifndef _DDB_DDB_H_
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#define _DDB_DDB_H_
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#include <machine/db_machdep.h> /* type definitions */
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typedef void db_cmdfcn_t(db_expr_t addr, boolean_t have_addr, db_expr_t count,
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char *modif);
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#define DB_COMMAND(cmd_name, func_name) \
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DB_SET(cmd_name, func_name, db_cmd_set, 0, NULL)
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#define DB_SHOW_COMMAND(cmd_name, func_name) \
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DB_SET(cmd_name, func_name, db_show_cmd_set, 0, NULL)
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#define DB_SET(cmd_name, func_name, set, flag, more) \
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static db_cmdfcn_t func_name; \
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\
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static const struct command __CONCAT(func_name,_cmd) = { \
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__STRING(cmd_name), \
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func_name, \
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flag, \
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more \
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}; \
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TEXT_SET(set, __CONCAT(func_name,_cmd)); \
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\
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static void \
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func_name(addr, have_addr, count, modif) \
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db_expr_t addr; \
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boolean_t have_addr; \
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db_expr_t count; \
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char *modif;
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extern char *esym;
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extern db_expr_t db_maxoff;
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extern int db_active;
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extern int db_indent;
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extern int db_inst_count;
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extern int db_load_count;
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extern int debugger_on_panic;
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extern int db_store_count;
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extern db_expr_t db_radix;
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extern db_expr_t db_max_width;
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extern db_expr_t db_tab_stop_width;
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struct vm_map;
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void db_check_interrupt(void);
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void db_clear_watchpoints(void);
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db_addr_t db_disasm(db_addr_t loc, boolean_t altfmt);
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/* instruction disassembler */
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void db_error(const char *s);
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int db_expression(db_expr_t *valuep);
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int db_get_variable(db_expr_t *valuep);
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void db_iprintf(const char *,...) __printflike(1, 2);
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struct vm_map *db_map_addr(vm_offset_t);
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boolean_t db_map_current(struct vm_map *);
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boolean_t db_map_equal(struct vm_map *, struct vm_map *);
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void db_print_loc_and_inst(db_addr_t loc);
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void db_printf(const char *fmt, ...) __printflike(1, 2);
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void db_read_bytes(vm_offset_t addr, size_t size, char *data);
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/* machine-dependent */
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int db_readline(char *lstart, int lsize);
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void db_restart_at_pc(boolean_t watchpt);
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void db_set_watchpoints(void);
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void db_skip_to_eol(void);
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boolean_t db_stop_at_pc(boolean_t *is_breakpoint);
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#define db_strcpy strcpy
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void db_trap(int type, int code);
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int db_value_of_name(const char *name, db_expr_t *valuep);
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void db_write_bytes(vm_offset_t addr, size_t size, char *data);
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/* machine-dependent */
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void db_stack_thread(db_expr_t addr, boolean_t have_addr,
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db_expr_t count, char *modif);
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void kdb_init(void);
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db_cmdfcn_t db_breakpoint_cmd;
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db_cmdfcn_t db_continue_cmd;
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db_cmdfcn_t db_delete_cmd;
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db_cmdfcn_t db_deletehwatch_cmd;
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db_cmdfcn_t db_deletewatch_cmd;
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db_cmdfcn_t db_examine_cmd;
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db_cmdfcn_t db_hwatchpoint_cmd;
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db_cmdfcn_t db_listbreak_cmd;
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db_cmdfcn_t db_print_cmd;
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db_cmdfcn_t db_ps;
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db_cmdfcn_t db_search_cmd;
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db_cmdfcn_t db_set_cmd;
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db_cmdfcn_t db_show_regs;
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db_cmdfcn_t db_single_step_cmd;
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db_cmdfcn_t db_stack_trace_cmd;
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db_cmdfcn_t db_trace_until_call_cmd;
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db_cmdfcn_t db_trace_until_matching_cmd;
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db_cmdfcn_t db_watchpoint_cmd;
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db_cmdfcn_t db_write_cmd;
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db_cmdfcn_t db_show_one_thread;
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#if 0
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db_cmdfcn_t db_help_cmd;
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db_cmdfcn_t db_show_all_threads;
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db_cmdfcn_t ipc_port_print;
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db_cmdfcn_t vm_page_print;
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#endif
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/* Scare the user with backtrace of curthread to console. */
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void db_print_backtrace(void);
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/*
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* Command table.
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*/
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struct command {
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char * name; /* command name */
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db_cmdfcn_t *fcn; /* function to call */
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int flag; /* extra info: */
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#define CS_OWN 0x1 /* non-standard syntax */
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#define CS_MORE 0x2 /* standard syntax, but may have other words
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* at end */
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#define CS_SET_DOT 0x100 /* set dot after command */
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struct command *more; /* another level of command */
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};
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/* XXX: UGLY hack */
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#ifdef CN_DEAD
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/*
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* Routines to support GDB on an sio port.
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*/
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extern dev_t gdbdev;
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extern cn_getc_t *gdb_getc;
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extern cn_putc_t *gdb_putc;
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#endif
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#endif /* !_DDB_DDB_H_ */
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