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-rw-r--r--gprof/basic_blocks.c292
1 files changed, 123 insertions, 169 deletions
diff --git a/gprof/basic_blocks.c b/gprof/basic_blocks.c
index 43dd762b..926743f 100644
--- a/gprof/basic_blocks.c
+++ b/gprof/basic_blocks.c
@@ -1,8 +1,26 @@
-/*
- * Basic-block level related code: reading/writing of basic-block info
- * to/from gmon.out; computing and formatting of basic-block related
- * statistics.
- */
+/* basic_blocks.c - Basic-block level related code: reading/writing
+ of basic-block info to/from gmon.out; computing and formatting of
+ basic-block related statistics.
+
+ Copyright (C) 2000 Free Software Foundation, Inc.
+
+ This file is part of GNU Binutils.
+
+ 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, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
+
#include <stdio.h>
#include <unistd.h>
#include "basic_blocks.h"
@@ -14,26 +32,19 @@
#include "source.h"
#include "sym_ids.h"
-
-/*
- * Default option values:
- */
+/* Default option values: */
bool bb_annotate_all_lines = FALSE;
unsigned long bb_min_calls = 1;
int bb_table_length = 10;
-/*
- * Variables used to compute annotated source listing stats:
- */
+/* Variables used to compute annotated source listing stats: */
static long num_executable_lines;
static long num_lines_executed;
-/*
- * Helper for sorting. Compares two symbols and returns result
- * such that sorting will be increasing according to filename, line
- * number, and address (in that order).
- */
+/* Helper for sorting. Compares two symbols and returns result
+ such that sorting will be increasing according to filename, line
+ number, and address (in that order). */
static int
DEFUN (cmp_bb, (lp, rp), const void *lp AND const void *rp)
@@ -45,36 +56,25 @@ DEFUN (cmp_bb, (lp, rp), const void *lp AND const void *rp)
if (left->file && right->file)
{
r = strcmp (left->file->name, right->file->name);
+
if (r)
- {
- return r;
- }
+ return r;
if (left->line_num != right->line_num)
- {
- return left->line_num - right->line_num;
- }
+ return left->line_num - right->line_num;
}
if (left->addr < right->addr)
- {
- return -1;
- }
+ return -1;
else if (left->addr > right->addr)
- {
- return 1;
- }
+ return 1;
else
- {
- return 0;
- }
+ return 0;
}
-/*
- * Helper for sorting. Order basic blocks in decreasing number of
- * calls, ties are broken in increasing order of line numbers.
- */
+/* Helper for sorting. Order basic blocks in decreasing number of
+ calls, ties are broken in increasing order of line numbers. */
static int
DEFUN (cmp_ncalls, (lp, rp), const void *lp AND const void *rp)
{
@@ -82,13 +82,9 @@ DEFUN (cmp_ncalls, (lp, rp), const void *lp AND const void *rp)
const Sym *right = *(const Sym **) rp;
if (!left)
- {
- return 1;
- }
+ return 1;
else if (!right)
- {
- return -1;
- }
+ return -1;
if (left->ncalls < right->ncalls)
return 1;
@@ -98,10 +94,7 @@ DEFUN (cmp_ncalls, (lp, rp), const void *lp AND const void *rp)
return left->line_num - right->line_num;
}
-
-/*
- * Skip over variable length string.
- */
+/* Skip over variable length string. */
static void
DEFUN (fskip_string, (fp), FILE * fp)
{
@@ -110,17 +103,13 @@ DEFUN (fskip_string, (fp), FILE * fp)
while ((ch = fgetc (fp)) != EOF)
{
if (ch == '\0')
- {
- break;
- }
+ break;
}
}
+/* Read a basic-block record from file IFP. FILENAME is the name
+ of file IFP and is provided for formatting error-messages only. */
-/*
- * Read a basic-block record from file IFP. FILENAME is the name
- * of file IFP and is provided for formatting error-messages only.
- */
void
DEFUN (bb_read_rec, (ifp, filename), FILE * ifp AND const char *filename)
{
@@ -136,20 +125,18 @@ DEFUN (bb_read_rec, (ifp, filename), FILE * ifp AND const char *filename)
}
nblocks = bfd_get_32 (core_bfd, (bfd_byte *) & nblocks);
+
if (gmon_file_version == 0)
- {
- fskip_string (ifp);
- }
+ fskip_string (ifp);
for (b = 0; b < nblocks; ++b)
{
if (gmon_file_version == 0)
{
int line_num;
- /*
- * Version 0 had lots of extra stuff that we don't
- * care about anymore.
- */
+
+ /* Version 0 had lots of extra stuff that we don't
+ care about anymore. */
if ((fread (&ncalls, sizeof (ncalls), 1, ifp) != 1)
|| (fread (&addr, sizeof (addr), 1, ifp) != 1)
|| (fskip_string (ifp), FALSE)
@@ -170,15 +157,11 @@ DEFUN (bb_read_rec, (ifp, filename), FILE * ifp AND const char *filename)
}
}
- /*
- * Basic-block execution counts are meaningful only if we're
- * profiling at the line-by-line level:
- */
+ /* Basic-block execution counts are meaningful only if we're
+ profiling at the line-by-line level: */
if (line_granularity)
{
-
- /* convert from target to host endianness: */
-
+ /* Convert from target to host endianness: */
addr = get_vma (core_bfd, (bfd_byte *) & addr);
ncalls = bfd_get_32 (core_bfd, (bfd_byte *) &ncalls);
@@ -212,7 +195,7 @@ DEFUN (bb_read_rec, (ifp, filename), FILE * ifp AND const char *filename)
{
user_warned = TRUE;
fprintf (stderr,
- _("%s: warning: ignoring basic-block exec counts (use -l or --line)\n"),
+ _("%s: warning: ignoring basic-block exec counts (use -l or --line)\n"),
whoami);
}
}
@@ -220,12 +203,9 @@ DEFUN (bb_read_rec, (ifp, filename), FILE * ifp AND const char *filename)
return;
}
-
-/*
- * Write all basic-blocks with non-zero counts to file OFP. FILENAME
- * is the name of OFP and is provided for producing error-messages
- * only.
- */
+/* Write all basic-blocks with non-zero counts to file OFP. FILENAME
+ is the name of OFP and is provided for producing error-messages
+ only. */
void
DEFUN (bb_write_blocks, (ofp, filename), FILE * ofp AND const char *filename)
{
@@ -236,8 +216,7 @@ DEFUN (bb_write_blocks, (ofp, filename), FILE * ofp AND const char *filename)
Sym *sym;
int i;
- /* count how many non-zero blocks with have: */
-
+ /* Count how many non-zero blocks with have: */
for (sym = symtab.base; sym < symtab.limit; ++sym)
{
for (i = 0; i < NBBS && sym->bb_addr[i]; i++)
@@ -245,7 +224,7 @@ DEFUN (bb_write_blocks, (ofp, filename), FILE * ofp AND const char *filename)
nblocks += i;
}
- /* write header: */
+ /* Write header: */
bfd_put_32 (core_bfd, nblocks, (bfd_byte *) & nblocks);
if (fwrite (&tag, sizeof (tag), 1, ofp) != 1
|| fwrite (&nblocks, sizeof (nblocks), 1, ofp) != 1)
@@ -254,7 +233,7 @@ DEFUN (bb_write_blocks, (ofp, filename), FILE * ofp AND const char *filename)
done (1);
}
- /* write counts: */
+ /* Write counts: */
for (sym = symtab.base; sym < symtab.limit; ++sym)
{
for (i = 0; i < NBBS && sym->bb_addr[i]; i++)
@@ -272,13 +251,11 @@ DEFUN (bb_write_blocks, (ofp, filename), FILE * ofp AND const char *filename)
}
}
+/* Output basic-block statistics in a format that is easily parseable.
+ Current the format is:
+
+ <filename>:<line-number>: (<function-name>:<bb-addr): <ncalls> */
-/*
- * Output basic-block statistics in a format that is easily parseable.
- * Current the format is:
- *
- * <filename>:<line-number>: (<function-name>:<bb-addr): <ncalls>
- */
void
DEFUN_VOID (print_exec_counts)
{
@@ -286,25 +263,19 @@ DEFUN_VOID (print_exec_counts)
int i, j, len;
if (first_output)
- {
- first_output = FALSE;
- }
+ first_output = FALSE;
else
- {
- printf ("\f\n");
- }
-
- /* sort basic-blocks according to function name and line number: */
+ printf ("\f\n");
+ /* Sort basic-blocks according to function name and line number: */
sorted_bbs = (Sym **) xmalloc (symtab.len * sizeof (sorted_bbs[0]));
len = 0;
+
for (sym = symtab.base; sym < symtab.limit; ++sym)
{
- /*
- * Accept symbol if it's in the INCL_EXEC table
- * or there is no INCL_EXEC table
- * and it does not appear in the EXCL_EXEC table.
- */
+ /* Accept symbol if it's in the INCL_EXEC table
+ or there is no INCL_EXEC table
+ and it does not appear in the EXCL_EXEC table. */
if (sym_lookup (&syms[INCL_EXEC], sym->addr)
|| (syms[INCL_EXEC].len == 0
&& !sym_lookup (&syms[EXCL_EXEC], sym->addr)))
@@ -312,9 +283,10 @@ DEFUN_VOID (print_exec_counts)
sorted_bbs[len++] = sym;
}
}
+
qsort (sorted_bbs, len, sizeof (sorted_bbs[0]), cmp_bb);
- /* output basic-blocks: */
+ /* Output basic-blocks: */
for (i = 0; i < len; ++i)
{
@@ -325,6 +297,7 @@ DEFUN_VOID (print_exec_counts)
sym->file ? sym->file->name : _("<unknown>"), sym->line_num,
sym->name, (unsigned long) sym->addr, sym->ncalls);
}
+
for (j = 0; j < NBBS && sym->bb_addr[j]; j ++)
{
if (sym->bb_calls[j] > 0 || ! ignore_zeros)
@@ -340,17 +313,15 @@ DEFUN_VOID (print_exec_counts)
free (sorted_bbs);
}
-/*
- * Helper for bb_annotated_source: format annotation containing
- * number of line executions. Depends on being called on each
- * line of a file in sequential order.
- *
- * Global variable bb_annotate_all_lines enables execution count
- * compression (counts are supressed if identical to the last one)
- * and prints counts on all executed lines. Otherwise, print
- * all basic-block execution counts exactly once on the line
- * that starts the basic-block.
- */
+/* Helper for bb_annotated_source: format annotation containing
+ number of line executions. Depends on being called on each
+ line of a file in sequential order.
+
+ Global variable bb_annotate_all_lines enables execution count
+ compression (counts are supressed if identical to the last one)
+ and prints counts on all executed lines. Otherwise, print
+ all basic-block execution counts exactly once on the line
+ that starts the basic-block. */
static void
DEFUN (annotate_with_count, (buf, width, line_num, arg),
@@ -363,10 +334,10 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
unsigned long last_print = (unsigned long) -1;
b = NULL;
+
if (line_num <= sf->num_lines)
- {
- b = sf->line[line_num - 1];
- }
+ b = sf->line[line_num - 1];
+
if (!b)
{
for (i = 0; i < width; i++)
@@ -390,13 +361,11 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
ncalls_set = 0;
/* If this is a function entry point, label the line no matter what.
- * Otherwise, we're in the middle of a function, so check to see
- * if the first basic-block address is larger than the starting
- * address of the line. If so, then this line begins with a
- * a portion of the previous basic-block, so print that prior
- * execution count (if bb_annotate_all_lines is set).
- */
-
+ Otherwise, we're in the middle of a function, so check to see
+ if the first basic-block address is larger than the starting
+ address of the line. If so, then this line begins with a
+ a portion of the previous basic-block, so print that prior
+ execution count (if bb_annotate_all_lines is set). */
if (b->is_func)
{
sprintf (p, "%lu", b->ncalls);
@@ -417,9 +386,8 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
}
/* Loop through all of this line's basic-blocks. For each one,
- * update last_count, then compress sequential identical counts
- * (if bb_annotate_all_lines) and print the execution count.
- */
+ update last_count, then compress sequential identical counts
+ (if bb_annotate_all_lines) and print the execution count. */
for (i = 0; i < NBBS && b->bb_addr[i]; i++)
{
@@ -432,9 +400,7 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
ncalls += last_count;
if (bb_annotate_all_lines && last_count == last_print)
- {
- continue;
- }
+ continue;
if (p > tmpbuf)
*p++ = ',';
@@ -445,11 +411,10 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
}
/* We're done. If nothing has been printed on this line,
- * print the last execution count (bb_annotate_all_lines),
- * which could be from either a previous line (if there were
- * no BBs on this line), or from this line (if all our BB
- * counts were compressed out because they were identical).
- */
+ print the last execution count (bb_annotate_all_lines),
+ which could be from either a previous line (if there were
+ no BBs on this line), or from this line (if all our BB
+ counts were compressed out because they were identical). */
if (bb_annotate_all_lines && p == tmpbuf)
{
@@ -497,11 +462,10 @@ DEFUN (annotate_with_count, (buf, width, line_num, arg),
}
}
-/*
- * Annotate the files named in SOURCE_FILES with basic-block statistics
- * (execution counts). After each source files, a few statistics
- * regarding that source file are printed.
- */
+/* Annotate the files named in SOURCE_FILES with basic-block statistics
+ (execution counts). After each source files, a few statistics
+ regarding that source file are printed. */
+
void
DEFUN_VOID (print_annotated_source)
{
@@ -510,18 +474,14 @@ DEFUN_VOID (print_annotated_source)
int i, table_len;
FILE *ofp;
- /*
- * Find maximum line number for each source file that user is
- * interested in:
- */
+ /* Find maximum line number for each source file that user is
+ interested in: */
for (sym = symtab.base; sym < symtab.limit; ++sym)
{
- /*
- * Accept symbol if it's file is known, its line number is
- * bigger than anything we have seen for that file so far and
- * if it's in the INCL_ANNO table or there is no INCL_ANNO
- * table and it does not appear in the EXCL_ANNO table.
- */
+ /* Accept symbol if it's file is known, its line number is
+ bigger than anything we have seen for that file so far and
+ if it's in the INCL_ANNO table or there is no INCL_ANNO
+ table and it does not appear in the EXCL_ANNO table. */
if (sym->file && sym->line_num > sym->file->num_lines
&& (sym_lookup (&syms[INCL_ANNO], sym->addr)
|| (syms[INCL_ANNO].len == 0
@@ -531,8 +491,7 @@ DEFUN_VOID (print_annotated_source)
}
}
- /* allocate line descriptors: */
-
+ /* Allocate line descriptors: */
for (sf = first_src_file; sf; sf = sf->next)
{
if (sf->num_lines > 0)
@@ -542,8 +501,7 @@ DEFUN_VOID (print_annotated_source)
}
}
- /* count executions per line: */
-
+ /* Count executions per line: */
for (sym = symtab.base; sym < symtab.limit; ++sym)
{
if (sym->file && sym->file->num_lines
@@ -553,19 +511,20 @@ DEFUN_VOID (print_annotated_source)
{
sym->file->ncalls += sym->ncalls;
line_stats = sym->file->line[sym->line_num - 1];
+
if (!line_stats)
{
- /* common case has at most one basic-block per source line: */
+ /* Common case has at most one basic-block per source line: */
sym->file->line[sym->line_num - 1] = sym;
}
else if (!line_stats->addr)
{
- /* sym is the 3rd .. nth basic block for this line: */
+ /* sym is the 3rd .. nth basic block for this line: */
line_stats->ncalls += sym->ncalls;
}
else
{
- /* sym is the second basic block for this line */
+ /* sym is the second basic block for this line. */
new_line = (Sym *) xmalloc (sizeof (*new_line));
*new_line = *line_stats;
new_line->addr = 0;
@@ -575,41 +534,37 @@ DEFUN_VOID (print_annotated_source)
}
}
- /* plod over source files, annotating them: */
-
+ /* Plod over source files, annotating them: */
for (sf = first_src_file; sf; sf = sf->next)
{
if (!sf->num_lines || (ignore_zeros && sf->ncalls == 0))
- {
- continue;
- }
+ continue;
num_executable_lines = num_lines_executed = 0;
+
ofp = annotate_source (sf, 16, annotate_with_count, sf);
if (!ofp)
- {
- continue;
- }
+ continue;
if (bb_table_length > 0)
{
fprintf (ofp, _("\n\nTop %d Lines:\n\n Line Count\n\n"),
bb_table_length);
- /* abuse line arrays---it's not needed anymore: */
+ /* Abuse line arrays---it's not needed anymore: */
qsort (sf->line, sf->num_lines, sizeof (sf->line[0]), cmp_ncalls);
table_len = bb_table_length;
+
if (table_len > sf->num_lines)
- {
- table_len = sf->num_lines;
- }
+ table_len = sf->num_lines;
+
for (i = 0; i < table_len; ++i)
{
sym = sf->line[i];
+
if (!sym || sym->ncalls == 0)
- {
break;
- }
+
fprintf (ofp, "%9d %10lu\n", sym->line_num, sym->ncalls);
}
}
@@ -631,9 +586,8 @@ DEFUN_VOID (print_annotated_source)
num_executable_lines
? (double) sf->ncalls / (double) num_executable_lines
: 0.0);
+
if (ofp != stdout)
- {
- fclose (ofp);
- }
+ fclose (ofp);
}
}
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