From bdcefd62125e5e0025879ec9fec7e4e60b3d3516 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 13 Jun 2002 02:16:09 +0000 Subject: Fix pthreads to use the rt signals if present -Erik --- libc/signal/allocrtsig.c | 64 ++++++++++++++++-------------------------------- 1 file changed, 21 insertions(+), 43 deletions(-) (limited to 'libc/signal/allocrtsig.c') diff --git a/libc/signal/allocrtsig.c b/libc/signal/allocrtsig.c index ebebd2a54..2102a15ba 100644 --- a/libc/signal/allocrtsig.c +++ b/libc/signal/allocrtsig.c @@ -4,80 +4,58 @@ Contributed by Ulrich Drepper , 1997. 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. + 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 - Library General Public License for more details. + Lesser 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., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + 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. */ #include #include #include #include - - + /* Only enable rt signals when it is supported at compile time */ -#ifdef __NR_rt_sigaction +#ifndef __NR_rt_sigaction /* 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. */ - +static int current_rtmin = -1; +static int current_rtmax = -1; +#else static int current_rtmin = __SIGRTMIN; static int current_rtmax = __SIGRTMAX; - - - -#ifdef __UCLIBC_HAS_THREADS__ -/* 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) -{ - if (current_rtmin > current_rtmax) - /* We don't have anymore signals available. */ - return -1; - - return high ? current_rtmin++ : current_rtmax--; -} #endif /* Return number of available real-time signal with highest priority. */ int __libc_current_sigrtmin (void) { - return current_rtmin; + return current_rtmin; } /* Return number of available real-time signal with lowest priority. */ int __libc_current_sigrtmax (void) { - return current_rtmax; + return current_rtmax; } -#else - -#ifdef __UCLIBC_HAS_THREADS__ +/* 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) { + if (current_rtmin == -1 || current_rtmin > current_rtmax) + /* We don't have anymore signal available. */ return -1; -} -#endif -int __libc_current_sigrtmin (void) -{ - return -1; + return high ? current_rtmin++ : current_rtmax--; } - -int __libc_current_sigrtmax (void) -{ - return -1; -} -#endif -- cgit v1.2.3