global.c

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/* -*- C -*- */
/*
 * Copyright (c) 2015-2020 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_ADDB

#include "lib/trace.h"
#include "lib/uuid.h"                 /* m0_node_uuid */
#include "lib/errno.h"                /* ENOMEM */
#include "lib/thread.h"               /* m0_thread_tls */
#include "lib/memory.h"
#include "module/instance.h"
#include "addb2/sys.h"
#include "addb2/identifier.h"         /* M0_AVI_THREAD */
#include "addb2/addb2.h"

#define SYS() (m0_addb2_module_get()->am_sys)

M0_INTERNAL void m0_addb2_global_thread_enter(void)
{
        struct m0_addb2_sys  *sys = SYS();
        struct m0_thread_tls *tls = m0_thread_tls();

        M0_PRE(tls->tls_addb2_mach == NULL);
        if (sys != NULL) {
                tls->tls_addb2_mach = m0_addb2_sys_get(sys);
                m0_addb2_push(M0_AVI_NODE, M0_ADDB2_OBJ(&m0_node_uuid));
                M0_ADDB2_PUSH(M0_AVI_PID, m0_pid());
                m0_addb2_push(M0_AVI_THREAD, M0_ADDB2_OBJ(&tls->tls_self->t_h));
                m0_addb2_clock_add(&tls->tls_clock, M0_AVI_CLOCK, -1);
        }
}

M0_INTERNAL void m0_addb2_global_thread_leave(void)
{
        struct m0_addb2_sys  *sys  = SYS();
        struct m0_thread_tls *tls  = m0_thread_tls();
        struct m0_addb2_mach *mach = tls->tls_addb2_mach;

        if (mach != NULL) {
                M0_ASSERT(sys != NULL);
                m0_addb2_pop(M0_AVI_THREAD);
                m0_addb2_pop(M0_AVI_PID);
                m0_addb2_pop(M0_AVI_NODE);
                M0_SET0(&tls->tls_clock);
                tls->tls_addb2_mach = NULL;
                m0_addb2_sys_put(sys, mach);
        }
}

M0_INTERNAL int m0_addb2_global_init(void)
{
        int result;

        result = m0_addb2_sys_init((struct m0_addb2_sys **)&SYS(),
                                   &(struct m0_addb2_config) {
                                               .co_queue_max = 4 * 1024 * 1024,
                                               .co_pool_min  = 1024,
                                               .co_pool_max  = 1024 * 1024
                                   });
        if (result == 0)
                m0_addb2_global_thread_enter();
        return result;
}

M0_INTERNAL void m0_addb2_global_fini(void)
{
        struct m0_addb2_sys *sys = SYS();

        m0_addb2_global_thread_leave();
        if (sys != NULL)
                m0_addb2_sys_fini(sys);
}

M0_INTERNAL struct m0_addb2_sys *m0_addb2_global_get(void)
{
        return SYS();
}

#undef SYS
#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
 */