C++ (Cpp) sx_rollback_svp 예제들

예제 #1

파일: sx.c 프로젝트: chayao2015/sophia

sxstate sx_rollback(sx *x)
{
	sxmanager *m = x->manager;
	ssiter i;
	ss_iterinit(ss_bufiter, &i);
	ss_iteropen(ss_bufiter, &i, &x->log.buf, sizeof(svlogv));
	/* support log free after commit and half-commit mode */
	if (x->state == SXCOMMIT) {
		int gc = 0;
		for (; ss_iterhas(ss_bufiter, &i); ss_iternext(ss_bufiter, &i))
		{
			svlogv *lv = ss_iterof(ss_bufiter, &i);
			svv *v = lv->v.v;
			int size = sv_vsize(v);
			if (sv_vunref(m->r, v))
				gc += size;
		}
		ss_quota(m->r->quota, SS_QREMOVE, gc);
		sx_promote(x, SXROLLBACK);
		return SXROLLBACK;
	}
	sx_rollback_svp(x, &i, 1);
	sx_promote(x, SXROLLBACK);
	sx_end(x);
	return SXROLLBACK;
}

예제 #2

파일: sx.c 프로젝트: ConfusedReality/sophia

sxstate sx_rollback(sx *x)
{
	assert(x->state != SX_COMMIT);
	ssiter i;
	ss_iterinit(ss_bufiter, &i);
	ss_iteropen(ss_bufiter, &i, &x->log->buf, sizeof(svlogv));
	sx_rollback_svp(x, &i, 1);
	sx_promote(x, SX_ROLLBACK);
	sx_end(x);
	return SX_ROLLBACK;
}

예제 #3

파일: sx.c 프로젝트: ConfusedReality/sophia

sxstate sx_commit(sx *x)
{
	if (x->state == SX_COMMIT)
		return SX_COMMIT;
	assert(x->state == SX_PREPARE);
	sxmanager *m = x->manager;
	ssiter i;
	ss_iterinit(ss_bufiter, &i);
	ss_iteropen(ss_bufiter, &i, &x->log->buf, sizeof(svlogv));
	uint64_t csn = ++m->csn;
	for (; ss_iterhas(ss_bufiter, &i); ss_iternext(ss_bufiter, &i))
	{
		svlogv *lv = ss_iterof(ss_bufiter, &i);
		sxv *v = lv->ptr;
		if ((int)v->lo == x->log_read)
			break;
		/* abort conflict reader */
		if (v->prev && !sx_vcommitted(v->prev)) {
			sxindex *i = v->prev->index;
			assert(sv_vflags(v->prev->v, i->r) & SVGET);
			sx_vabort(v->prev);
		}
		/* abort waiters */
		sx_vabort_all(v->next);
		/* mark stmt as commited */
		sx_vcommit(v, csn);
		lv->ptr = NULL;
		/* schedule read stmt for gc */
		sxindex *i = v->index;
		if (sv_vflags(v->v, i->r) & SVGET) {
			sv_vref(v->v);
			v->gc = m->gc;
			m->gc = v;
			m->count_gc++;
		} else {
			sx_untrack(v);
			sx_vpool_push(&m->pool, v);
		}
	}

	/* rollback latest reads */
	sx_rollback_svp(x, &i, 0);

	sx_promote(x, SX_COMMIT);
	sx_end(x);
	return SX_COMMIT;
}

예제 #4

파일: sx.c 프로젝트: jason-xxl/sophia

sxstate sx_commit(sx *x)
{
	assert(x->state == SXPREPARE);

	sxmanager *m = x->manager;
	ssiter i;
	ss_iterinit(ss_bufiter, &i);
	ss_iteropen(ss_bufiter, &i, &x->log.buf, sizeof(svlogv));
	uint64_t csn = ++m->csn;
	for (; ss_iterhas(ss_bufiter, &i); ss_iternext(ss_bufiter, &i))
	{
		svlogv *lv = ss_iterof(ss_bufiter, &i);
		sxv *v = lv->v.v;
		if ((int)v->lo == x->log_read)
			break;
		/* abort conflict reader */
		if (v->prev && !sx_vcommitted(v->prev)) {
			assert(v->prev->v->flags & SVGET);
			sx_vabort(v->prev);
		}
		/* abort waiters */
		sx_vabort_all(v->next);
		/* mark stmt as commited */
		sx_vcommit(v, csn);
		/* translate log version from sxv to svv */
		sv_init(&lv->v, &sv_vif, v->v, NULL);
		/* schedule read stmt for gc */
		if (v->v->flags & SVGET) {
			sv_vref(v->v);
			v->gc = m->gc;
			m->gc = v;
			m->count_gc++;
		} else {
			sx_untrack(v);
			ss_free(m->asxv, v);
		}
	}

	/* rollback latest reads */
	sx_rollback_svp(x, &i, 0);

	sx_promote(x, SXCOMMIT);
	sx_end(x);
	return SXCOMMIT;
}

예제 #5

파일: sx.c 프로젝트: jason-xxl/sophia

sxstate sx_rollback(sx *x)
{
	sxmanager *m = x->manager;
	ssiter i;
	ss_iterinit(ss_bufiter, &i);
	ss_iteropen(ss_bufiter, &i, &x->log.buf, sizeof(svlogv));
	/* support half-commit mode */
	if (x->state == SXCOMMIT) {
		for (; ss_iterhas(ss_bufiter, &i); ss_iternext(ss_bufiter, &i))
		{
			svlogv *lv = ss_iterof(ss_bufiter, &i);
			svv *v = lv->v.v;
			sv_vfree(m->r, v);
		}
		sx_promote(x, SXROLLBACK);
		return SXROLLBACK;
	}
	sx_rollback_svp(x, &i, 1);
	sx_promote(x, SXROLLBACK);
	sx_end(x);
	return SXROLLBACK;
}