Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>

static Lock     privlock;
static int      privinit;
static void     **privs;

extern void     **_privates;
extern int      _nprivates;

void **
privalloc(void)
{
        void **p;
        int i;

        lock(&privlock);
        if(!privinit){
                privinit = 1;
                if(_nprivates){
                        _privates[0] = 0;
                        for(i = 1; i < _nprivates; i++)
                                _privates[i] = &_privates[i - 1];
                        privs = &_privates[i - 1];
                }
        }
        p = privs;
        if(p != nil){
                privs = *p;
                *p = nil;
        }
        unlock(&privlock);
        return p;
}

void
privfree(void **p)
{
        lock(&privlock);
        if(p != nil && privinit){
                *p = privs;
                privs = p;
        }
        unlock(&privlock);
}