Warning: Attempt to read property "date" on null in /usr/local/www/websvn.planix.org/blame.php on line 247

Warning: Attempt to read property "msg" on null in /usr/local/www/websvn.planix.org/blame.php on line 247
WebSVN – planix.SVN – Blame – /os/branches/feature_fixcpp/sys/src/ape/lib/ap/plan9/brk.c – Rev 2

Subversion Repositories planix.SVN

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
2 - 1 
#include "lib.h"
2 
#include <errno.h>
3 
#include "sys9.h"
4 
 
5 
char	end[];
6 
static	char	*bloc = { end };
7 
extern	int	_BRK_(void*);
8 
 
9 
char *
10 
brk(char *p)
11 
{
12 
	unsigned long n;
13 
 
14 
	n = (unsigned long)p;
15 
	n += 3;
16 
	n &= ~3;
17 
	if(_BRK_((void*)n) < 0){
18 
		errno = ENOMEM;
19 
		return (char *)-1;
20 
	}
21 
	bloc = (char *)n;
22 
	return 0;
23 
}
24 
 
25 
void *
26 
sbrk(unsigned long n)
27 
{
28 
	n += 3;
29 
	n &= ~3;
30 
	if(_BRK_((void *)(bloc+n)) < 0){
31 
		errno = ENOMEM;
32 
		return (void *)-1;
33 
	}
34 
	bloc += n;
35 
	return (void *)(bloc-n);
36 
}