/*
 * ********************************************
 *
 *   Licensed Materials - Property of IBM and/or HCL
 *
 *   IBM Informix Dynamic Server
 *   Copyright IBM Corporation 2010
 *   (c) Copyright HCL Technologies Ltd. 2017.  All Rights Reserved.
 *
 * ********************************************
 */
#include "API.h"
#ifndef IAD_GENCONFIG_H
#define IAD_GENCONFIG_H

/* TPCC fixed costs
 * These costs were generated on Linux Opteron
 *
 * PLOGS_PER_SEC = # plog pages per cpu at fixed clock speed
 * PLOGS_PER_SEC_RTO = # plog pages per cpu at this clock speed
 *              with RTO_SERVER_RESTART on
 * LLOGS_PER_SEC - # llog pages per cpu at fixed clocks speed
 *              with RTO_SERVER_RESTART on
 * FIXED_CLOCK_SPEED - clock speed of machine used to determine
 *              these rates
 * MIN_RUN_TIME = min time before plog or llog will recycle
 */
double PLOGS_PER_SEC_RTO =      600;
double PLOGS_PER_SEC =          80;
double LLOGS_PER_SEC =          1200;
double MIN_RUN_TIME =           300;            /* 5 minutes */
double FIXED_CLOCK_SPEED =      1996314023;

/* default values */
#define RTO_RESTART_POLICY      (120)   /* 2 minutes; units = seconds */
#define DATA_LOSS_POLICY        (1800)  /* 30 minutes; units = seconds */

int MEMORY_PER_ACTIVE_USER=     (1*MB);  /* prepare stmts, cursors, etc */
int MEMORY_PER_DS_USER=         (5*MB); /* joins, hash joins, etc */
int DBMS_MEMORY_OVERHEAD=       (50*MB);
int ROOTDBS_OVERHEAD=           (100*MB); /* 100 Mb */
double TEMP_SPACE=              (0.5);   /* 20% of non log space */
int PHYS_BUFF=                  (512);
int RTO_PHYS_BUFF=              (512);
int LOGS_BUFF=                  (256);
int LOCKS_PER_USER=             (2000);
double VP_MEM_CACHE=            (0.20); /* 20% of memory / ncpus */

#define MIN_BUFFERPOOL_SIZE     (2000*is->machineconfig.pagesize)
#define MIN_VP_MEM_CACHE	(800) /* KB */
#define MIN_LRUS                (16)
#define NUM_BUFFERS_PER_LRU     (1024*10)
#define DBMS_BOOT_OVERHEAD      (45)    /* 1 minute */
#define MIN_PLOG_SIZE           (0.20)  /* 20% of the bufferpool */
#define NUM_LOGFILES            (8)
#define MIN_DBSP_SIZE                   (100*MB)
#define OFF_RECVRY_THREADS_PER_DISK     (5)
#define AIOVPS_PER_COOKED_FILE          (2)
#define LISTEN_THREADS_PER_USERS        (150)

#define TPCC_NBUFFERS_WH        (51000)

#define DBSP_OVERHEAD           (1*MB)  /* 2 Mb */
#define NUM_LOGFILES            (8)
#define TEST_RW_SIZE            (10*MB)
#define TEST_RW_MAX_TIME        (100)    /* .5 Mb/sec is min disk speed */
#define DFLT_LOGSIZE            (4*MB)  /* 4 Mb */
#define DEF_NEGATIVE_ONE        -1
#define DEFBP_MAGIC		0x444154
#define MAX_PAGESIZE 		16*1024

typedef struct buffpool_cfg
{
    muint bpcfg_nbuffs;         /* Max number of shared buffers */
    mint  bpcfg_nlrus;          /* number of LRU queues */
    double bpcfg_maxdirty;      /* lru query begin cleaning limit */
    double bpcfg_mindirty;      /* lru query end cleaning limit */
    mint  bpcfg_pagesize;       /* page size of buffer */
    mint  bpcfg_flags;          /* flags, example BPCFG_DEFAULT */
}buffpool_cfg_t;

EXPORT long STDCALL iadGetRecommendation(install_t *inst, int type);
EXPORT char* STDCALL iadGetRecommendationString(install_t *inst, int type);
EXPORT int STDCALL iadCalculateRecommendation(install_t *inst);
EXPORT int STDCALL iadLoadRecommendation(install_t *inst);
EXPORT int STDCALL iadUpdateRecommendation(install_t *inst, int type, const char *value);
EXPORT int STDCALL iadLoadDefaultConfig(install_t *inst);
EXPORT int STDCALL iadSetAutoConfig(install_t *inst, int type, const char *value);
int InitAutoCfg(instance_t *inst);
int measure_disk_speed(install_t *is);

#endif /* IAD_GENCONFIG_H */