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| author | Roland McGrath <roland@gnu.org> | 1995-09-26 20:59:38 +0000 |
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| committer | Roland McGrath <roland@gnu.org> | 1995-09-26 20:59:38 +0000 |
| commit | 11c981a96d93feccba7cfb717f72db5d32a83f52 (patch) | |
| tree | c9e22c5e94375dff6d4334b552dd0dbc1d169efb /csu/gmon-start.c | |
| parent | e11c394911f221a862cbdec8aab4a363394711c6 (diff) | |
| download | glibc-11c981a96d93feccba7cfb717f72db5d32a83f52.tar.gz glibc-11c981a96d93feccba7cfb717f72db5d32a83f52.tar.xz glibc-11c981a96d93feccba7cfb717f72db5d32a83f52.zip | |
Tue Sep 26 16:50:17 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* gmon: New directory of profiling code, incorporated from 4.4BSD-Lite and modified. * sysdeps/i386/machine-gmon.h: New file. * sysdeps/stub/machine-gmon.h: New file. * sysdeps/mach/hurd/profil.c: New file. * sysdeps/stub/profil.c: New file. * sysdeps/unix/bsd/profil.S: New file. * Makefile (subdirs): Add gmon. * csu/gmon-start.c: New file. * csu/Makefile (extra-objs): Add gmon-start.o, g$(start-installed-name). (install-lib, omit-deps): Add g$(start-installed-name). ($(objpfx)g$(start-installed-name)): New target.
Diffstat (limited to 'csu/gmon-start.c')
| -rw-r--r-- | csu/gmon-start.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/csu/gmon-start.c b/csu/gmon-start.c new file mode 100644 index 0000000000..c9d51b113b --- /dev/null +++ b/csu/gmon-start.c @@ -0,0 +1,47 @@ +/* Code to enable profiling at program startup. +Copyright (C) 1995 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <sys/types.h> +#include <sys/gmon.h> +#include <stdlib.h> +#include <unistd.h> + +/* Beginning and end of our code segment. */ +extern void _start (), etext (); + +/* These functions are defined in gmon/gmon.c; + they do all the work of setting up and cleaning up profiling. */ +extern void monstartup (u_long, u_long); +extern void _mcleanup (void); + +/* This function gets called at startup by the normal constructor + mechanism. We link this file together with start.o to produce gcrt1.o, + so this constructor will be first in the list. */ +static void gmon_start (void) __attribute__ ((constructor)); +static void +gmon_start (void) +{ + /* Start keeping profiling records. */ + monstartup ((u_long) &_start, (u_long) &etext); + + /* Call _mcleanup before exitting; it will write out gmon.out from the + collected data. */ + atexit (&_mcleanup); +} + |