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glibc/gmon/bb_exit_func.c
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/* Copyright (C) 1996-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
Contributed by David Mosberger (davidm@cs.arizona.edu). | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
/* __bb_exit_func() dumps all the basic-block statistics linked into | |
the __bb_head chain to .d files. */ | |
#include <sys/gmon.h> | |
#include <sys/gmon_out.h> | |
#include <sys/types.h> | |
#include <stdio.h> | |
#include <stdio_ext.h> | |
#include <string.h> | |
#define OUT_NAME "gmon.out" | |
extern struct __bb *__bb_head attribute_hidden; | |
void | |
__bb_exit_func (void) | |
{ | |
const int version = GMON_VERSION; | |
struct gmon_hdr ghdr; | |
struct __bb *ptr; | |
FILE *fp; | |
fp = fopen (OUT_NAME, "wb"); | |
if (!fp) | |
{ | |
perror (OUT_NAME); | |
return; | |
} | |
/* No threads use this stream. */ | |
__fsetlocking (fp, FSETLOCKING_BYCALLER); | |
memcpy (&ghdr.cookie[0], GMON_MAGIC, 4); | |
memcpy (&ghdr.version, &version, sizeof (version)); | |
fwrite_unlocked (&ghdr, sizeof (ghdr), 1, fp); | |
for (ptr = __bb_head; ptr != 0; ptr = ptr->next) | |
{ | |
u_int ncounts = ptr->ncounts; | |
u_char tag; | |
u_int i; | |
tag = GMON_TAG_BB_COUNT; | |
fwrite_unlocked (&tag, sizeof (tag), 1, fp); | |
fwrite_unlocked (&ncounts, sizeof (ncounts), 1, fp); | |
for (i = 0; i < ncounts; ++i) | |
{ | |
fwrite_unlocked (&ptr->addresses[i], sizeof (ptr->addresses[0]), 1, | |
fp); | |
fwrite_unlocked (&ptr->counts[i], sizeof (ptr->counts[0]), 1, fp); | |
} | |
} | |
fclose (fp); | |
} |