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/* Debug counter for debugging support
Copyright (C) 2006-2018 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>.
See dbgcnt.def for usage information. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "diagnostic-core.h"
#include "dumpfile.h"
#include "dbgcnt.h"
struct string2counter_map {
const char *name;
enum debug_counter counter;
};
#define DEBUG_COUNTER(a) { #a , a },
static struct string2counter_map map[debug_counter_number_of_counters] =
{
#include "dbgcnt.def"
};
#undef DEBUG_COUNTER
#define DEBUG_COUNTER(a) UINT_MAX,
static unsigned int limit[debug_counter_number_of_counters] =
{
#include "dbgcnt.def"
};
#undef DEBUG_COUNTER
static unsigned int count[debug_counter_number_of_counters];
bool
dbg_cnt_is_enabled (enum debug_counter index)
{
return count[index] <= limit[index];
}
bool
dbg_cnt (enum debug_counter index)
{
count[index]++;
if (dump_file && count[index] == limit[index])
fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n",
map[index].name);
return dbg_cnt_is_enabled (index);
}
static void
dbg_cnt_set_limit_by_index (enum debug_counter index, int value)
{
limit[index] = value;
fprintf (stderr, "dbg_cnt '%s' set to %d\n", map[index].name, value);
}
static bool
dbg_cnt_set_limit_by_name (const char *name, int len, int value)
{
int i;
for (i = debug_counter_number_of_counters - 1; i >= 0; i--)
if (strncmp (map[i].name, name, len) == 0
&& map[i].name[len] == '\0')
break;
if (i < 0)
return false;
dbg_cnt_set_limit_by_index ((enum debug_counter) i, value);
return true;
}
/* Process a single "name:value" pair.
Returns NULL if there's no valid pair is found.
Otherwise returns a pointer to the end of the pair. */
static const char *
dbg_cnt_process_single_pair (const char *arg)
{
const char *colon = strchr (arg, ':');
char *endptr = NULL;
int value;
if (colon == NULL)
return NULL;
value = strtol (colon + 1, &endptr, 10);
if (endptr != NULL && endptr != colon + 1
&& dbg_cnt_set_limit_by_name (arg, colon - arg, value))
return endptr;
return NULL;
}
void
dbg_cnt_process_opt (const char *arg)
{
const char *start = arg;
const char *next;
do {
next = dbg_cnt_process_single_pair (arg);
if (next == NULL)
break;
} while (*next == ',' && (arg = next + 1));
if (next == NULL || *next != 0)
{
char *buffer = XALLOCAVEC (char, arg - start + 2);
sprintf (buffer, "%*c", (int)(1 + (arg - start)), '^');
error ("cannot find a valid counter:value pair:");
error ("-fdbg-cnt=%s", start);
error (" %s", buffer);
}
}
/* Print name, limit and count of all counters. */
void
dbg_cnt_list_all_counters (void)
{
int i;
printf (" %-30s %-5s %-5s\n", "counter name", "limit", "value");
printf ("----------------------------------------------\n");
for (i = 0; i < debug_counter_number_of_counters; i++)
printf (" %-30s %5d %5u\n",
map[i].name, limit[map[i].counter], count[map[i].counter]);
printf ("\n");
}
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