service.c

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/* -*- C -*- */
/*
 * Copyright (c) 2016-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */



#define M0_TRACE_SUBSYSTEM M0_TRACE_SUBSYS_DIXCM
#include "dix/cm/cm.h"
#include "lib/trace.h"
#include "lib/memory.h"
#include "motr/setup.h"
#include "dix/req.h"

M0_INTERNAL int m0_dix_cm_module_init(void)
{
        return m0_dix_cm_type_register() ?:
                m0_dix_sm_conf_init();
}

M0_INTERNAL void m0_dix_cm_module_fini(void)
{
        m0_dix_sm_conf_fini();
        m0_dix_cm_type_deregister();
}

M0_INTERNAL int
m0_dix_cm_svc_allocate(struct m0_reqh_service **service,
                       const struct m0_reqh_service_type *stype,
                       const struct m0_reqh_service_ops *svc_ops,
                       const struct m0_cm_ops *cm_ops,
                       struct m0_dix_cm_type  *dcmt)
{
        struct m0_dix_cm        *dix_cm;
        struct m0_cm            *cm;
        int                      rc;

        M0_ENTRY("stype: %p", stype);
        M0_PRE(service != NULL && stype != NULL);

        M0_ALLOC_PTR(dix_cm);
        if (dix_cm == NULL)
                return M0_ERR(-ENOMEM);

        dix_cm->dcm_type = dcmt;
        cm = &dix_cm->dcm_base;
        *service = &cm->cm_service;
        (*service)->rs_ops = svc_ops;
        dix_cm->dcm_magic = M0_DIX_CM_MAGIC;

        rc = m0_cm_init(cm, container_of(stype, struct m0_cm_type, ct_stype),
                        cm_ops);
        if (rc != 0)
                m0_free(dix_cm);
        M0_LOG(M0_DEBUG, "dix_cm: %p service: %p", dix_cm, *service);
        return M0_RC(rc);
}

M0_INTERNAL int m0_dix_cm_svc_start(struct m0_reqh_service *service)
{
        struct m0_cm *cm;
        int           rc;

        M0_ENTRY("service: %p", service);
        M0_PRE(service != NULL);

        cm = M0_AMB(cm, service, cm_service);
        rc = m0_cm_setup(cm);
        if (rc != 0)
                return M0_ERR(rc);
        return M0_RC(rc);
}

M0_INTERNAL void m0_dix_cm_svc_stop(struct m0_reqh_service *service)
{
        struct m0_cm *cm;

        M0_ENTRY("service: %p", service);
        M0_PRE(service != NULL);

        cm = container_of(service, struct m0_cm, cm_service);
        /*
         * Finalise the copy machine as the copy machine as the service is
         * stopped.
         */
        m0_cm_fini(cm);

        M0_LEAVE();
}

M0_INTERNAL void m0_dix_cm_svc_fini(struct m0_reqh_service *service)
{
        struct m0_cm     *cm;
        struct m0_dix_cm *dix_cm;

        M0_ENTRY("service: %p", service);
        M0_PRE(service != NULL);

        cm = container_of(service, struct m0_cm, cm_service);
        dix_cm = cm2dix(cm);
        m0_free(dix_cm);

        M0_LEAVE();
}

#undef M0_TRACE_SUBSYSTEM

/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */
/*
 * vim: tabstop=8 shiftwidth=8 noexpandtab textwidth=80 nowrap
 */