/*
 Copyright (c) 2011, Oracle and/or its affiliates. All rights
 reserved.
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; version 2 of
 the License.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 02110-1301  USA
 */
 
#ifndef NDBMEMCACHE_THREAD_IDENTIFIER_H
#define NDBMEMCACHE_THREAD_IDENTIFIER_H

#include <sys/types.h>
#include "ndbmemcache_config.h"
#include "ndbmemcache_global.h"

struct request_pipeline;  /* a forward declaration */

#define THD_ID_NAME_LEN (64 - sizeof(size_t))

typedef struct {
  struct request_pipeline *pipeline;
  char name[THD_ID_NAME_LEN];        /* likely size is 56 or 60 */
} thread_identifier;


DECLARE_FUNCTIONS_WITH_C_LINKAGE

/** call once at startup time, after pthread initilization */
void initialize_thread_id_key(void);           

/** store an identifier for the current thread */
void set_thread_id(thread_identifier *t);      

/** set child's identifier, based on parent, with printf-style thread name */
void set_child_thread_id(thread_identifier *parent, const char * fmt, ...);

/** fetch the identifier for the current thread */
const thread_identifier * get_thread_id(void); 

END_FUNCTIONS_WITH_C_LINKAGE

#endif