diff options
Diffstat (limited to 'libc/nptl/sysdeps/unix/sysv/linux/allocrtsig.c')
-rw-r--r-- | libc/nptl/sysdeps/unix/sysv/linux/allocrtsig.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/libc/nptl/sysdeps/unix/sysv/linux/allocrtsig.c b/libc/nptl/sysdeps/unix/sysv/linux/allocrtsig.c new file mode 100644 index 000000000..b37d54d65 --- /dev/null +++ b/libc/nptl/sysdeps/unix/sysv/linux/allocrtsig.c @@ -0,0 +1,56 @@ +/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + 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. */ + +#include <signal.h> + + +static int current_rtmin = __SIGRTMIN + 2; +static int current_rtmax = __SIGRTMAX; + + +/* We reserve __SIGRTMIN for use as the cancelation signal. This + signal is used internally. */ +int +__libc_current_sigrtmin (void) +{ + return current_rtmin; +} +libc_hidden_def (__libc_current_sigrtmin) +strong_alias (__libc_current_sigrtmin, __libc_current_sigrtmin_private) + + +int +__libc_current_sigrtmax (void) +{ + return current_rtmax; +} +libc_hidden_def (__libc_current_sigrtmax) +strong_alias (__libc_current_sigrtmax, __libc_current_sigrtmax_private) + + +int +__libc_allocate_rtsig (int high) +{ + if (current_rtmin == -1 || current_rtmin > current_rtmax) + /* We don't have anymore signal available. */ + return -1; + + return high ? current_rtmin++ : current_rtmax--; +} +strong_alias (__libc_allocate_rtsig, __libc_allocate_rtsig_private) |