C++ (Cpp) qbwrite_nonblockの例

コード例 #1

ファイル: pipe.c プロジェクト: GanShun/akaros

static long pipebwrite(struct chan *c, struct block *bp, uint32_t junk)
{
	long n;
	Pipe *p;
	//Prog *r;

	p = c->aux;
	switch (NETTYPE(c->qid.path)) {
		case Qdata0:
			if (c->flag & O_NONBLOCK)
				n = qbwrite_nonblock(p->q[1], bp);
			else
				n = qbwrite(p->q[1], bp);
			break;

		case Qdata1:
			if (c->flag & O_NONBLOCK)
				n = qbwrite_nonblock(p->q[0], bp);
			else
				n = qbwrite(p->q[0], bp);
			break;

		default:
			n = 0;
			panic("pipebwrite");
	}

	return n;
}

コード例 #2

ファイル: pipe.c プロジェクト: broketech/akaros

static long pipebwrite(struct chan *c, struct block *bp, uint32_t junk)
{
	ERRSTACK(2);
	long n;
	Pipe *p;
	//Prog *r;

	if (waserror()) {
		/* avoid exceptions when pipe is a mounted queue */
/*
		if((c->flag & CMSG) == 0) {
			r = up->iprog;
			if(r != NULL && r->kill == NULL)
				r->kill = "write on closed pipe";
		}
*/
		set_errno(EPIPE);
		nexterror();
	}

	p = c->aux;
	switch (NETTYPE(c->qid.path)) {
		case Qdata0:
			if (c->flag & O_NONBLOCK)
				n = qbwrite_nonblock(p->q[1], bp);
			else
				n = qbwrite(p->q[1], bp);
			break;

		case Qdata1:
			if (c->flag & O_NONBLOCK)
				n = qbwrite_nonblock(p->q[0], bp);
			else
				n = qbwrite(p->q[0], bp);
			break;

		default:
			n = 0;
			panic("pipebwrite");
	}

	poperror();
	return n;
}