ilock.c

来自「著名操作系统Plan 9的第三版的部分核心源代码。现在很难找到了。Plan 9是」· C语言 代码 · 共 25 行

#include "u.h"
#include "lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"

void
ilock(Lock *lk)
{
	if(lk->locked != 0)
		panic("ilock");
	lk->spl = splhi();
	lk->locked = 1;
}

void
iunlock(Lock *lk)
{
	if(lk->locked != 1)
		panic("iunlock");
	lk->locked = 0;
	splx(lk->spl);
}