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Nice(3) implementation

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Philip Homburg 2006-10-20 14:10:53 +00:00
parent 0b2c167c48
commit be928f01a5
3 changed files with 21 additions and 0 deletions
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1
include/unistd.h
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@ -146,6 +146,7 @@ _PROTOTYPE( int unlink, (const char *_path) );
_PROTOTYPE( ssize_t write, (int _fd, const void *_buf, size_t _n) );
_PROTOTYPE( int truncate, (const char *_path, off_t _length) );
_PROTOTYPE( int ftruncate, (int _fd, off_t _length) );
_PROTOTYPE( int nice, (int _incr) );
/* Open Group Base Specifications Issue 6 (not complete) */
_PROTOTYPE( int symlink, (const char *path1, const char *path2) );

1
lib/posix/Makefile.in
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@ -102,6 +102,7 @@ libc_FILES=" \
getloadavg.c \
getopt.c \
gettimeofday.c \
nice.c \
priority.c \
usleep.c"

19
lib/posix/nice.c Normal file
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@ -0,0 +1,19 @@
/*
nice.c
*/
#include <errno.h>
#include <unistd.h>
#include <sys/resource.h>
int nice(incr)
int incr;
{
int r;
errno= 0;
r= getpriority(PRIO_PROCESS, 0);
if (r == -1 && errno != 0)
return r;
return setpriority(PRIO_PROCESS, 0, r+incr);
}