152 lines
3.6 KiB
C
152 lines
3.6 KiB
C
/* Debug counter for debugging support
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Copyright (C) 2006-2014 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>.
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See dbgcnt.def for usage information. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "diagnostic-core.h"
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#include "dumpfile.h"
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#include "dbgcnt.h"
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struct string2counter_map {
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const char *name;
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enum debug_counter counter;
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};
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#define DEBUG_COUNTER(a) { #a , a },
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static struct string2counter_map map[debug_counter_number_of_counters] =
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{
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#include "dbgcnt.def"
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};
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#undef DEBUG_COUNTER
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#define DEBUG_COUNTER(a) UINT_MAX,
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static unsigned int limit[debug_counter_number_of_counters] =
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{
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#include "dbgcnt.def"
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};
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#undef DEBUG_COUNTER
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static unsigned int count[debug_counter_number_of_counters];
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bool
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dbg_cnt_is_enabled (enum debug_counter index)
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{
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return count[index] <= limit[index];
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}
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bool
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dbg_cnt (enum debug_counter index)
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{
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count[index]++;
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if (dump_file && count[index] == limit[index])
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fprintf (dump_file, "***dbgcnt: limit reached for %s.***\n",
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map[index].name);
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return dbg_cnt_is_enabled (index);
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}
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static void
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dbg_cnt_set_limit_by_index (enum debug_counter index, int value)
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{
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limit[index] = value;
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fprintf (stderr, "dbg_cnt '%s' set to %d\n", map[index].name, value);
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}
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static bool
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dbg_cnt_set_limit_by_name (const char *name, int len, int value)
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{
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int i;
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for (i = debug_counter_number_of_counters - 1; i >= 0; i--)
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if (strncmp (map[i].name, name, len) == 0
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&& map[i].name[len] == '\0')
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break;
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if (i < 0)
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return false;
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dbg_cnt_set_limit_by_index ((enum debug_counter) i, value);
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return true;
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}
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/* Process a single "name:value" pair.
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Returns NULL if there's no valid pair is found.
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Otherwise returns a pointer to the end of the pair. */
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static const char *
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dbg_cnt_process_single_pair (const char *arg)
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{
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const char *colon = strchr (arg, ':');
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char *endptr = NULL;
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int value;
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if (colon == NULL)
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return NULL;
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value = strtol (colon + 1, &endptr, 10);
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if (endptr != NULL && endptr != colon + 1
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&& dbg_cnt_set_limit_by_name (arg, colon - arg, value))
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return endptr;
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return NULL;
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}
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void
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dbg_cnt_process_opt (const char *arg)
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{
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const char *start = arg;
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const char *next;
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do {
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next = dbg_cnt_process_single_pair (arg);
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if (next == NULL)
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break;
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} while (*next == ',' && (arg = next + 1));
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if (next == NULL || *next != 0)
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{
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char *buffer = XALLOCAVEC (char, arg - start + 2);
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sprintf (buffer, "%*c", (int)(1 + (arg - start)), '^');
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error ("cannot find a valid counter:value pair:");
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error ("-fdbg-cnt=%s", start);
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error (" %s", buffer);
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}
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}
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/* Print name, limit and count of all counters. */
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void
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dbg_cnt_list_all_counters (void)
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{
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int i;
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printf (" %-30s %-5s %-5s\n", "counter name", "limit", "value");
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printf ("----------------------------------------------\n");
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for (i = 0; i < debug_counter_number_of_counters; i++)
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printf (" %-30s %5d %5u\n",
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map[i].name, limit[map[i].counter], count[map[i].counter]);
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printf ("\n");
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}
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