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/* Definitions for complaint handling during symbol reading in GDB.
Copyright (C) 1990-2022 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/>. */
#if !defined (COMPLAINTS_H)
#define COMPLAINTS_H
#include <unordered_set>
/* Helper for complaint. */
extern void complaint_internal (const char *fmt, ...)
ATTRIBUTE_PRINTF (1, 2);
/* This controls whether complaints are emitted. */
extern int stop_whining;
/* Return true if complaints are enabled. This can be used to guard code
that is used only to decide whether to issue a complaint. */
static inline bool
have_complaint ()
{
return stop_whining > 0;
}
/* Register a complaint. This is a macro around complaint_internal to
avoid computing complaint's arguments when complaints are disabled.
Running FMT via gettext [i.e., _(FMT)] can be quite expensive, for
example. */
#define complaint(FMT, ...) \
do \
{ \
if (have_complaint ()) \
complaint_internal (FMT, ##__VA_ARGS__); \
} \
while (0)
/* Clear out / initialize all complaint counters that have ever been
incremented. */
extern void clear_complaints ();
/* A class that can handle calls to complaint from multiple threads.
When this is instantiated, it hooks into the complaint mechanism,
so the 'complaint' macro can continue to be used. When it is
destroyed, it issues all the complaints that have been stored. It
should only be instantiated in the main thread. */
class complaint_interceptor
{
public:
complaint_interceptor ();
~complaint_interceptor ();
DISABLE_COPY_AND_ASSIGN (complaint_interceptor);
private:
/* The issued complaints. */
std::unordered_set<std::string> m_complaints;
/* The saved value of deprecated_warning_hook. */
void (*m_saved_warning_hook) (const char *, va_list)
ATTRIBUTE_FPTR_PRINTF (1,0);
/* A helper function that is used by the 'complaint' implementation
to issue a complaint. */
static void issue_complaint (const char *, va_list)
ATTRIBUTE_PRINTF (1, 0);
/* This object. Used by the static callback function. */
static complaint_interceptor *g_complaint_interceptor;
};
#endif /* !defined (COMPLAINTS_H) */
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