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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /debug/pcprofile.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'debug/pcprofile.c')
-rw-r--r-- | debug/pcprofile.c | 91 |
1 files changed, 0 insertions, 91 deletions
diff --git a/debug/pcprofile.c b/debug/pcprofile.c deleted file mode 100644 index b6402ef63b..0000000000 --- a/debug/pcprofile.c +++ /dev/null @@ -1,91 +0,0 @@ -/* Profile PC and write result to FIFO. - Copyright (C) 1999-2017 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, see - <http://www.gnu.org/licenses/>. */ - -#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) |