Esempi in C++ (Cpp) per vdir_wrlock

Esempio n. 1

File: vdir.c Progetto: nigoroll/varnish-cache

void
vdir_remove_backend(VRT_CTX, struct vdir *vd, VCL_BACKEND be, unsigned *cur)
{
	unsigned u, n;

	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
	CHECK_OBJ_NOTNULL(vd, VDIR_MAGIC);
	if (be == NULL) {
		VRT_fail(ctx, "%s: NULL backend cannot be removed",
		    VRT_BACKEND_string(vd->dir));
		return;
	}
	CHECK_OBJ(be, DIRECTOR_MAGIC);
	vdir_wrlock(vd);
	for (u = 0; u < vd->n_backend; u++)
		if (vd->backend[u] == be)
			break;
	if (u == vd->n_backend) {
		vdir_unlock(vd);
		return;
	}
	n = (vd->n_backend - u) - 1;
	memmove(&vd->backend[u], &vd->backend[u+1], n * sizeof(vd->backend[0]));
	memmove(&vd->weight[u], &vd->weight[u+1], n * sizeof(vd->weight[0]));
	vd->n_backend--;

	if (cur) {
		assert(*cur <= vd->n_backend);
		if (u < *cur)
			(*cur)--;
		else if (*cur == vd->n_backend)
			*cur = 0;
	}
	vdir_unlock(vd);
}

Esempio n. 2

File: vdir.c Progetto: maniacs-ops/varnish-cache

unsigned
vdir_remove_backend(struct vdir *vd, VCL_BACKEND be)
{
	unsigned u, n;

	CHECK_OBJ_NOTNULL(vd, VDIR_MAGIC);
	if (be == NULL)
		return (vd->n_backend);
	CHECK_OBJ(be, DIRECTOR_MAGIC);
	vdir_wrlock(vd);
	for (u = 0; u < vd->n_backend; u++)
		if (vd->backend[u] == be)
			break;
	if (u == vd->n_backend) {
		vdir_unlock(vd);
		return (vd->n_backend);
	}
	vd->total_weight -= vd->weight[u];
	n = (vd->n_backend - u) - 1;
	memmove(&vd->backend[u], &vd->backend[u+1], n * sizeof(vd->backend[0]));
	memmove(&vd->weight[u], &vd->weight[u+1], n * sizeof(vd->weight[0]));
	vd->n_backend--;
	vdir_unlock(vd);
	return (vd->n_backend);
}

Esempio n. 3

File: vdir.c Progetto: maniacs-ops/varnish-cache

unsigned
vdir_add_backend(struct vdir *vd, VCL_BACKEND be, double weight)
{
	unsigned u;

	CHECK_OBJ_NOTNULL(vd, VDIR_MAGIC);
	AN(be);
	vdir_wrlock(vd);
	if (vd->n_backend >= vd->l_backend)
		vdir_expand(vd, vd->l_backend + 16);
	assert(vd->n_backend < vd->l_backend);
	u = vd->n_backend++;
	vd->backend[u] = be;
	vd->weight[u] = weight;
	vd->total_weight += weight;
	vdir_unlock(vd);
	return (u);
}

Esempio n. 4

File: vdir.c Progetto: nigoroll/varnish-cache

VCL_BACKEND
vdir_pick_be(VRT_CTX, struct vdir *vd, double w)
{
	unsigned u;
	VCL_BACKEND be = NULL;

	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
	CHECK_OBJ_NOTNULL(vd, VDIR_MAGIC);
	vdir_wrlock(vd);
	vdir_update_health(ctx, vd);
	if (vd->total_weight > 0.0) {
		u = vdir_pick_by_weight(vd, w * vd->total_weight);
		assert(u < vd->n_backend);
		be = vd->backend[u];
		CHECK_OBJ_NOTNULL(be, DIRECTOR_MAGIC);
	}
	vdir_unlock(vd);
	return (be);
}

Esempio n. 5

File: vdir.c Progetto: nigoroll/varnish-cache

void
vdir_add_backend(VRT_CTX, struct vdir *vd, VCL_BACKEND be, double weight)
{
	unsigned u;

	CHECK_OBJ_NOTNULL(ctx, VRT_CTX_MAGIC);
	CHECK_OBJ_NOTNULL(vd, VDIR_MAGIC);
	if (be == NULL) {
		VRT_fail(ctx, "%s: NULL backend cannot be added",
		    VRT_BACKEND_string(vd->dir));
		return;
	}
	AN(be);
	vdir_wrlock(vd);
	if (vd->n_backend >= vd->l_backend)
		vdir_expand(vd, vd->l_backend + 16);
	assert(vd->n_backend < vd->l_backend);
	u = vd->n_backend++;
	vd->backend[u] = be;
	vd->weight[u] = weight;
	vdir_unlock(vd);
}

Esempio n. 6

File: vdir.c Progetto: maniacs-ops/varnish-cache

VCL_BACKEND
vdir_pick_be(struct vdir *vd, double w, const struct busyobj *bo)
{
	unsigned u;
	double tw = 0.0;
	VCL_BACKEND be = NULL;

	vdir_wrlock(vd);
	for (u = 0; u < vd->n_backend; u++) {
		if (vd->backend[u]->healthy(vd->backend[u], bo, NULL)) {
			vbit_clr(vd->vbm, u);
			tw += vd->weight[u];
		} else
			vbit_set(vd->vbm, u);
	}
	if (tw > 0.0) {
		u = vdir_pick_by_weight(vd, w * tw, vd->vbm);
		assert(u < vd->n_backend);
		be = vd->backend[u];
		CHECK_OBJ_NOTNULL(be, DIRECTOR_MAGIC);
	}
	vdir_unlock(vd);
	return (be);
}