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authorEric Andersen <andersen@codepoet.org>2004-08-22 06:04:57 +0000
committerEric Andersen <andersen@codepoet.org>2004-08-22 06:04:57 +0000
commite9d95cfa85e50c04c2bdeada90aa44ab0c2d31ea (patch)
tree5f9cce3beb4b46fd21f7ecb6ede342f27cce4268 /libc/sysdeps/linux/common/pcprofile.c
parent01ccabfbd77e756460b86e4b4c8875c26b8c13c6 (diff)
Make the stub profiling stuff work
Diffstat (limited to 'libc/sysdeps/linux/common/pcprofile.c')
-rw-r--r--libc/sysdeps/linux/common/pcprofile.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/libc/sysdeps/linux/common/pcprofile.c b/libc/sysdeps/linux/common/pcprofile.c
deleted file mode 100644
index d5a9601b4..000000000
--- a/libc/sysdeps/linux/common/pcprofile.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/* Profile PC and write result to FIFO.
- Copyright (C) 1999, 2000 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1999.
-
- 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, write to the Free
- Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- 02111-1307 USA. */
-
-#define _GNU_SOURCE
-#include <features.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-/* Nonzero if we are actually doing something. */
-static int active;
-
-/* The file descriptor of the FIFO. */
-static int fd;
-
-
-static void __attribute__ ((constructor))
-install (void)
-{
- /* See whether the environment variable `PCPROFILE_OUTPUT' is defined.
- If yes, it should name a FIFO. We open it and mark ourself as active. */
- const char *outfile = getenv ("PCPROFILE_OUTPUT");
-
- if (outfile != NULL && *outfile != '\0')
- {
- fd = open (outfile, O_RDWR | O_CREAT, 0666);
-
- if (fd != -1)
- {
- uint32_t word;
-
- active = 1;
-
- /* Write a magic word which tells the reader about the byte
- order and the size of the following entries. */
- word = 0xdeb00000 | sizeof (void *);
- if (TEMP_FAILURE_RETRY (write (fd, &word, 4)) != 4)
- {
- /* If even this fails we shouldn't try further. */
- close (fd);
- fd = -1;
- active = 0;
- }
- }
- }
-}
-
-
-static void __attribute__ ((destructor))
-uninstall (void)
-{
- if (active)
- close (fd);
-}
-
-
-void __cyg_profile_func_enter (void *this_fn, void *call_site)
-{
- void *buf[2];
-
- if (! active)
- return;
-
- /* Now write out the current position and that of the caller. We do
- this now, and don't cache the because we want real-time output. */
- buf[0] = this_fn;
- buf[1] = call_site;
-
- write (fd, buf, sizeof buf);
-}
-/* We don't handle entry and exit differently here. */
-strong_alias (__cyg_profile_func_enter, __cyg_profile_func_exit)