mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-03 18:13:01 +00:00
3a803036f7
This patch changes the option parsing framework to allow a set of
core or tool (currently only memcheck) options to be changed dynamically.
Here is a summary of the new functionality (extracted from NEWS):
* It is now possible to dynamically change the value of many command
line options while your program (or its children) are running under
Valgrind.
To have the list of dynamically changeable options, run
valgrind --help-dyn-options
You can change the options from the shell by using vgdb to launch
the monitor command "v.clo <clo option>...".
The same monitor command can be used from a gdb connected
to the valgrind gdbserver.
Your program can also change the dynamically changeable options using
the client request VALGRIND_CLO_CHANGE(option).
Here is a brief description of the code changes.
* the command line options parsing macros are now checking a 'parsing' mode
to decide if the given option must be handled or not.
(more about the parsing mode below).
* the 'main' command option parsing code has been split in a function
'process_option' that can be called now by:
- early_process_cmd_line_options
(looping over args, calling process_option in mode "Early")
- main_process_cmd_line_options
(looping over args, calling process_option in mode "Processing")
- the new function VG_(process_dynamic_option) called from
gdbserver or from VALGRIND_CLO_CHANGE (calling
process_option in mode "Dynamic" or "Help")
* So, now, during startup, process_option is called twice for each arg:
- once during Early phase
- once during normal Processing
Then process_option can then be called again during execution.
So, the parsing mode is defined so that the option parsing code
behaves differently (e.g. allows or not to handle the option)
depending on the mode.
// Command line option parsing happens in the following modes:
// cloE : Early processing, used by coregrind m_main.c to parse the
// command line options that must be handled early on.
// cloP : Processing, used by coregrind and tools during startup, when
// doing command line options Processing.
// clodD : Dynamic, used to dynamically change options after startup.
// A subset of the command line options can be changed dynamically
// after startup.
// cloH : Help, special mode to produce the list of dynamically changeable
// options for --help-dyn-options.
typedef
enum {
cloE = 1,
cloP = 2,
cloD = 4,
cloH = 8
} Clo_Mode;
The option parsing macros in pub_tool_options.h have now all a new variant
*_CLOM with the mode(s) in which the given option is accepted.
The old variant is kept and calls the new variant with mode cloP.
The function VG_(check_clom) in the macro compares the current mode
with the modes allowed for the option, and returns True if qq_arg
should be further processed.
For example:
// String argument, eg. --foo=yes or --foo=no
(VG_(check_clom) \
(qq_mode, qq_arg, qq_option, \
VG_STREQN(VG_(strlen)(qq_option)+1, qq_arg, qq_option"=")) && \
({const HChar* val = &(qq_arg)[ VG_(strlen)(qq_option)+1 ]; \
if VG_STREQ(val, "yes") (qq_var) = True; \
else if VG_STREQ(val, "no") (qq_var) = False; \
else VG_(fmsg_bad_option)(qq_arg, "Invalid boolean value '%s'" \
" (should be 'yes' or 'no')\n", val); \
True; }))
VG_BOOL_CLOM(cloP, qq_arg, qq_option, qq_var)
To make an option dynamically excutable, it is typically enough to replace
VG_BOOL_CLO(...)
by
VG_BOOL_CLOM(cloPD, ...)
For example:
- else if VG_BOOL_CLO(arg, "--show-possibly-lost", tmp_show) {
+ else if VG_BOOL_CLOM(cloPD, arg, "--show-possibly-lost", tmp_show) {
cloPD means the option value is set/changed during the main command
Processing (P) and Dynamically during execution (D).
Note that the 'body/further processing' of a command is only executed when
the option is recognised and the current parsing mode is ok for this option.
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- ErrorMgr: management of errors and suppressions. ---*/
|
|
/*--- pub_core_errormgr.h ---*/
|
|
/*--------------------------------------------------------------------*/
|
|
|
|
/*
|
|
This file is part of Valgrind, a dynamic binary instrumentation
|
|
framework.
|
|
|
|
Copyright (C) 2000-2017 Julian Seward
|
|
jseward@acm.org
|
|
|
|
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 2 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/>.
|
|
|
|
The GNU General Public License is contained in the file COPYING.
|
|
*/
|
|
|
|
#ifndef __PUB_CORE_ERRORMGR_H
|
|
#define __PUB_CORE_ERRORMGR_H
|
|
|
|
//--------------------------------------------------------------------
|
|
// PURPOSE: This module manages errors recording and printing,
|
|
// which includes suppression reading and writing.
|
|
//--------------------------------------------------------------------
|
|
|
|
#include "pub_tool_errormgr.h"
|
|
|
|
// These must be negative, so as to not overlap with tool error kinds.
|
|
typedef
|
|
enum {
|
|
// Nb: thread errors are a relic of the time when Valgrind's core
|
|
// could detect them. This example is left as an example should new
|
|
// core errors ever be added.
|
|
ThreadErr = -1,
|
|
}
|
|
CoreErrorKind;
|
|
|
|
/* Add a new suppression file in the list of supp files.
|
|
If VG_(load_suppressions) was already called, also load it. */
|
|
extern void VG_(add_suppression_file) (const HChar *filename);
|
|
|
|
extern void VG_(load_suppressions) ( void );
|
|
|
|
// if verbosity == 0, print nothing.
|
|
// else if xml print suppressions used (in xml format)
|
|
// else if verbosity == 1 print Error summary
|
|
// else print all errors and suppressions used.
|
|
extern void VG_(show_all_errors) ( Int verbosity, Bool xml );
|
|
|
|
/* Print (in readable format) the last error that occurred. */
|
|
extern void VG_(show_last_error) ( void );
|
|
|
|
extern void VG_(show_error_counts_as_XML) ( void );
|
|
|
|
extern Bool VG_(is_action_requested) ( const HChar* action, Bool* clo );
|
|
|
|
extern Bool VG_(showing_core_errors) ( void );
|
|
|
|
extern UInt VG_(get_n_errs_found) ( void );
|
|
extern UInt VG_(get_n_errs_shown) ( void );
|
|
|
|
extern void VG_(print_errormgr_stats) ( void );
|
|
|
|
#endif // __PUB_CORE_ERRORMGR_H
|
|
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- end ---*/
|
|
/*--------------------------------------------------------------------*/
|