55 lines
1022 B
C
55 lines
1022 B
C
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/*
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* This file is part of the UCB release of Plan 9. It is subject to the license
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* terms in the LICENSE file found in the top-level directory of this
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* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
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* part of the UCB release of Plan 9, including this file, may be copied,
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* modified, propagated, or distributed except according to the terms contained
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* in the LICENSE file.
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*/
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#include <u.h>
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#include <libc.h>
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static Lock privlock;
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static int privinit = 0;
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static void **privs;
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extern void **_privates;
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extern int _nprivates;
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void **
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privalloc(void)
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{
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void **p;
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int i;
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lock(&privlock);
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if(!privinit){
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privinit = 1;
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if(_nprivates){
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_privates[0] = 0;
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for(i = 1; i < _nprivates; i++)
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_privates[i] = &_privates[i - 1];
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privs = &_privates[i - 1];
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}
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}
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p = privs;
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if(p != nil){
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privs = *p;
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*p = nil;
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}
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unlock(&privlock);
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return p;
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}
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void
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privfree(void **p)
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{
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lock(&privlock);
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if(p != nil && privinit){
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*p = privs;
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privs = p;
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}
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unlock(&privlock);
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}
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