mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-25 06:20:06 +00:00
2b778ceb40
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/* Handle real-time signal allocation. Generic version.
|
|
Copyright (C) 1997-2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
|
|
|
|
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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <signal.h>
|
|
|
|
/* Another sysdeps file can #define this and then #include this file. */
|
|
#ifndef RESERVED_SIGRT
|
|
# define RESERVED_SIGRT 0
|
|
#endif
|
|
|
|
/* In these variables we keep track of the used variables. If the
|
|
platform does not support any real-time signals we will define the
|
|
values to some unreasonable value which will signal failing of all
|
|
the functions below. */
|
|
#ifdef __SIGRTMIN
|
|
static int current_rtmin = __SIGRTMIN + RESERVED_SIGRT;
|
|
static int current_rtmax = __SIGRTMAX;
|
|
#endif
|
|
|
|
/* Return number of available real-time signal with highest priority. */
|
|
int
|
|
__libc_current_sigrtmin (void)
|
|
{
|
|
#ifdef __SIGRTMIN
|
|
return current_rtmin;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
libc_hidden_def (__libc_current_sigrtmin)
|
|
strong_alias (__libc_current_sigrtmin, __libc_current_sigrtmin_private)
|
|
|
|
/* Return number of available real-time signal with lowest priority. */
|
|
int
|
|
__libc_current_sigrtmax (void)
|
|
{
|
|
#ifdef __SIGRTMIN
|
|
return current_rtmax;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
libc_hidden_def (__libc_current_sigrtmax)
|
|
strong_alias (__libc_current_sigrtmax, __libc_current_sigrtmax_private)
|
|
|
|
/* Allocate real-time signal with highest/lowest available
|
|
priority. Please note that we don't use a lock since we assume
|
|
this function to be called at program start. */
|
|
int
|
|
__libc_allocate_rtsig (int high)
|
|
{
|
|
#ifndef __SIGRTMIN
|
|
return -1;
|
|
#else
|
|
if (current_rtmin == -1 || current_rtmin > current_rtmax)
|
|
/* We don't have any more signals available. */
|
|
return -1;
|
|
|
|
return high ? current_rtmin++ : current_rtmax--;
|
|
#endif
|
|
}
|
|
strong_alias (__libc_allocate_rtsig, __libc_allocate_rtsig_private)
|