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author | Jim Meyering <jim@meyering.net> | 2002-04-28 21:17:45 +0000 |
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committer | Jim Meyering <jim@meyering.net> | 2002-04-28 21:17:45 +0000 |
commit | 833bf615e55c2c7da116e82558364653766c1dce (patch) | |
tree | 0f7a4a81db54055e86fa495451e39242cc8698f6 /lib/sig2str.h | |
parent | 6526f08502ac42696886766376fdb977f8674173 (diff) | |
download | gnulib-833bf615e55c2c7da116e82558364653766c1dce.tar.gz |
New file: from Paul Eggert.
Diffstat (limited to 'lib/sig2str.h')
-rw-r--r-- | lib/sig2str.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/lib/sig2str.h b/lib/sig2str.h new file mode 100644 index 0000000000..3a46a8ce85 --- /dev/null +++ b/lib/sig2str.h @@ -0,0 +1,49 @@ +/* sig2str.h -- convert between signal names and numbers + + Copyright (C) 2002 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* Written by Paul Eggert. */ + +/* Include <signal.h> before including this file. */ + +/* Don't override system declarations of SIG2STR_MAX, sig2str, str2sig. */ +#ifndef SIG2STR_MAX + +/* Upper bound on the string length of an integer converted to string. + 302 / 1000 is ceil (log10 (2.0)). Subtract 1 for the sign bit; + add 1 for integer division truncation; add 1 more for a minus sign. */ +# define INT_STRLEN_BOUND(t) ((sizeof (t) * CHAR_BIT - 1) * 302 / 1000 + 2) + +/* Size of a buffer needed to hold a signal name like "HUP". */ +# define SIG2STR_MAX (sizeof "SIGRTMAX" + INT_STRLEN_BOUND (int) - 1) + +int sig2str (int, char *); +int str2sig (char const *, int *); + +#endif + +/* An upper bound on signal numbers allowed by the system. */ + +#if defined _sys_nsig +# define SIGNUM_BOUND (_sys_nsig - 1) +#elif defined NSIG +# define SIGNUM_BOUND (NSIG - 1) +#elif defined WTERMSIG +# define SIGNUM_BOUND WTERMSIG (~ 0) +#else +# define SIGNUM_BOUND 127 +#endif |