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/*-
* BSD LICENSE
*
* Copyright (c) Intel Corporation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SPDK_INTERNAL_EVENT_H
#define SPDK_INTERNAL_EVENT_H
#include "spdk/stdinc.h"
#include "spdk/event.h"
#include "spdk/json.h"
struct spdk_event {
uint32_t lcore;
spdk_event_fn fn;
void *arg1;
void *arg2;
};
int spdk_reactors_init(unsigned int max_delay_us);
void spdk_reactors_fini(void);
void spdk_reactors_start(void);
void spdk_reactors_stop(void *arg1, void *arg2);
struct spdk_subsystem {
const char *name;
/* User must call spdk_subsystem_init_next() when they are done with their initialization. */
void (*init)(void);
void (*fini)(void);
void (*config)(FILE *fp);
/**
* Write JSON configuration handler.
*
* \param w JSON write context
* \param done_ev Done event to be called when writing is done.
*/
void (*write_config_json)(struct spdk_json_write_ctx *w, struct spdk_event *done_ev);
TAILQ_ENTRY(spdk_subsystem) tailq;
};
TAILQ_HEAD(spdk_subsystem_list, spdk_subsystem);
extern struct spdk_subsystem_list g_subsystems;
struct spdk_subsystem *spdk_subsystem_find(struct spdk_subsystem_list *list, const char *name);
struct spdk_subsystem_depend {
const char *name;
const char *depends_on;
TAILQ_ENTRY(spdk_subsystem_depend) tailq;
};
TAILQ_HEAD(spdk_subsystem_depend_list, spdk_subsystem_depend);
extern struct spdk_subsystem_depend_list g_subsystems_deps;
void spdk_add_subsystem(struct spdk_subsystem *subsystem);
void spdk_add_subsystem_depend(struct spdk_subsystem_depend *depend);
void spdk_subsystem_init(struct spdk_event *app_start_event);
void spdk_subsystem_fini(struct spdk_event *app_finish_event);
void spdk_subsystem_init_next(int rc);
void spdk_subsystem_fini_next(void);
void spdk_subsystem_config(FILE *fp);
/**
* Save pointed \c subsystem configuration to the JSON write context \c w. In case of
* error \c null is written to the JSON context. Writing might be done in async way
* so caller need to pass event that subsystem will call when it finish writing
* configuration.
*
* \param w JSON write context
* \param subsystem the subsystem to query
* \param done_ev event to be called when writing is done
*/
void spdk_subsystem_config_json(struct spdk_json_write_ctx *w, struct spdk_subsystem *subsystem,
struct spdk_event *done_ev);
void spdk_rpc_initialize(const char *listen_addr);
void spdk_rpc_finish(void);
/**
* \brief Register a new subsystem
*/
#define SPDK_SUBSYSTEM_REGISTER(_name) \
__attribute__((constructor)) static void _name ## _register(void) \
{ \
spdk_add_subsystem(&_name); \
}
/**
* \brief Declare that a subsystem depends on another subsystem.
*/
#define SPDK_SUBSYSTEM_DEPEND(_name, _depends_on) \
static struct spdk_subsystem_depend __subsystem_ ## _name ## _depend_on ## _depends_on = { \
.name = #_name, \
.depends_on = #_depends_on, \
}; \
__attribute__((constructor)) static void _name ## _depend_on ## _depends_on(void) \
{ \
spdk_add_subsystem_depend(&__subsystem_ ## _name ## _depend_on ## _depends_on); \
}
#endif /* SPDK_INTERNAL_EVENT_H */
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