mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-21 01:12:32 +08:00
187 lines
6.5 KiB
C++
187 lines
6.5 KiB
C++
/* TID parsing for GDB, the GNU debugger.
|
|
|
|
Copyright (C) 2015-2018 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef TID_PARSE_H
|
|
#define TID_PARSE_H
|
|
|
|
#include "cli/cli-utils.h"
|
|
|
|
struct thread_info;
|
|
|
|
/* Issue an invalid thread ID error, pointing at STRING, the invalid
|
|
ID. */
|
|
extern void ATTRIBUTE_NORETURN invalid_thread_id_error (const char *string);
|
|
|
|
/* Parse TIDSTR as a per-inferior thread ID, in either INF_NUM.THR_NUM
|
|
or THR_NUM form. In the latter case, the missing INF_NUM is filled
|
|
in from the current inferior. If ENDPTR is not NULL,
|
|
parse_thread_id stores the address of the first character after the
|
|
thread ID. Either a valid thread is returned, or an error is
|
|
thrown. */
|
|
struct thread_info *parse_thread_id (const char *tidstr, const char **end);
|
|
|
|
/* Parse a thread ID or a thread range list.
|
|
|
|
A range will be of the form
|
|
|
|
<inferior_num>.<thread_number1>-<thread_number2>
|
|
|
|
and will represent all the threads of inferior INFERIOR_NUM with
|
|
number between THREAD_NUMBER1 and THREAD_NUMBER2, inclusive.
|
|
<inferior_num> can also be omitted, as in
|
|
|
|
<thread_number1>-<thread_number2>
|
|
|
|
in which case GDB infers the inferior number from the default
|
|
passed to the constructor or to the last call to the init
|
|
function. */
|
|
class tid_range_parser
|
|
{
|
|
public:
|
|
/* Default construction. Must call init before calling get_*. */
|
|
tid_range_parser () {}
|
|
|
|
/* Calls init automatically. See init for description of
|
|
parameters. */
|
|
tid_range_parser (const char *tidlist, int default_inferior);
|
|
|
|
/* Reinitialize a tid_range_parser. TIDLIST is the string to be
|
|
parsed. DEFAULT_INFERIOR is the inferior number to assume if a
|
|
non-qualified thread ID is found. */
|
|
void init (const char *tidlist, int default_inferior);
|
|
|
|
/* Parse a thread ID or a thread range list.
|
|
|
|
This function is designed to be called iteratively. While
|
|
processing a thread ID range list, at each call it will return
|
|
(in the INF_NUM and THR_NUM output parameters) the next thread ID
|
|
in the range (irrespective of whether the thread actually
|
|
exists).
|
|
|
|
At the beginning of parsing a thread range, the char pointer
|
|
PARSER->m_cur_tok will be advanced past <thread_number1> and left
|
|
pointing at the '-' token. Subsequent calls will not advance the
|
|
pointer until the range is completed. The call that completes
|
|
the range will advance the pointer past <thread_number2>.
|
|
|
|
This function advances through the input string for as long you
|
|
call it. Once the end of the input string is reached, a call to
|
|
finished returns false (see below).
|
|
|
|
E.g., with list: "1.2 3.4-6":
|
|
|
|
1st call: *INF_NUM=1; *THR_NUM=2 (finished==0)
|
|
2nd call: *INF_NUM=3; *THR_NUM=4 (finished==0)
|
|
3rd call: *INF_NUM=3; *THR_NUM=5 (finished==0)
|
|
4th call: *INF_NUM=3; *THR_NUM=6 (finished==1)
|
|
|
|
Returns true if a thread/range is parsed successfully, false
|
|
otherwise. */
|
|
bool get_tid (int *inf_num, int *thr_num);
|
|
|
|
/* Like get_tid, but return a thread ID range per call, rather then
|
|
a single thread ID.
|
|
|
|
If the next element in the list is a single thread ID, then
|
|
*THR_START and *THR_END are set to the same value.
|
|
|
|
E.g.,. with list: "1.2 3.4-6"
|
|
|
|
1st call: *INF_NUM=1; *THR_START=2; *THR_END=2 (finished==0)
|
|
2nd call: *INF_NUM=3; *THR_START=4; *THR_END=6 (finished==1)
|
|
|
|
Returns true if parsed a thread/range successfully, false
|
|
otherwise. */
|
|
bool get_tid_range (int *inf_num, int *thr_start, int *thr_end);
|
|
|
|
/* Returns true if processing a star wildcard (e.g., "1.*")
|
|
range. */
|
|
bool in_star_range () const;
|
|
|
|
/* Returns true if parsing has completed. */
|
|
bool finished () const;
|
|
|
|
/* Return the current token being parsed. When parsing has
|
|
finished, this points past the last parsed token. */
|
|
const char *cur_tok () const;
|
|
|
|
/* When parsing a range, advance past the final token in the
|
|
range. */
|
|
void skip_range ();
|
|
|
|
/* True if the TID last parsed was explicitly inferior-qualified.
|
|
IOW, whether the spec specified an inferior number
|
|
explicitly. */
|
|
bool tid_is_qualified () const;
|
|
|
|
private:
|
|
/* No need for these. They are intentionally not defined anywhere. */
|
|
tid_range_parser (const tid_range_parser &);
|
|
tid_range_parser &operator= (const tid_range_parser &);
|
|
|
|
bool get_tid_or_range (int *inf_num, int *thr_start, int *thr_end);
|
|
|
|
/* The possible states of the tid range parser's state machine,
|
|
indicating what sub-component are we expecting. */
|
|
enum
|
|
{
|
|
/* Parsing the inferior number. */
|
|
STATE_INFERIOR,
|
|
|
|
/* Parsing the thread number or thread number range. */
|
|
STATE_THREAD_RANGE,
|
|
|
|
/* Parsing a star wildcard thread range. E.g., "1.*". */
|
|
STATE_STAR_RANGE,
|
|
} m_state;
|
|
|
|
/* The string being parsed. When parsing has finished, this points
|
|
past the last parsed token. */
|
|
const char *m_cur_tok;
|
|
|
|
/* The range parser state when we're parsing the thread number
|
|
sub-component. */
|
|
number_or_range_parser m_range_parser;
|
|
|
|
/* Last inferior number returned. */
|
|
int m_inf_num;
|
|
|
|
/* True if the TID last parsed was explicitly inferior-qualified.
|
|
IOW, whether the spec specified an inferior number
|
|
explicitly. */
|
|
bool m_qualified;
|
|
|
|
/* The inferior number to assume if the TID is not qualified. */
|
|
int m_default_inferior;
|
|
};
|
|
|
|
|
|
/* Accept a string-form list of thread IDs such as is accepted by
|
|
tid_range_parser. Return true if the INF_NUM.THR.NUM thread is in
|
|
the list. DEFAULT_INFERIOR is the inferior number to assume if a
|
|
non-qualified thread ID is found in the list.
|
|
|
|
By definition, an empty list includes all threads. This is to be
|
|
interpreted as typing a command such as "info threads" with no
|
|
arguments. */
|
|
extern int tid_is_in_list (const char *list, int default_inferior,
|
|
int inf_num, int thr_num);
|
|
|
|
#endif /* TID_PARSE_H */
|